* [PATCH v10 00/26] Add LoongArch linux-user emulation support
@ 2021-11-12 6:53 Song Gao
2021-11-12 6:53 ` [PATCH v10 01/26] target/loongarch: Add README Song Gao
` (25 more replies)
0 siblings, 26 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: richard.henderson, laurent
Hi all,
This series only support linux-user emulation.
More about LoongArch at: https://github.com/loongson/
The latest kernel:
* https://github.com/loongson/linux/tree/loongarch-next
Patches need review:
* 0016-target-loongarch-Add-disassembler.patch
* 0017-linux-user-Add-LoongArch-generic-header-files.patch
* 0018-linux-user-Add-LoongArch-specific-structures.patch
* 0019-linux-user-Add-LoongArch-signal-support.patch
* 0020-linux-user-Add-LoongArch-elf-support.patch
* 0021-linux-user-Add-LoongArch-syscall-support.patch
* 0022-linux-user-Add-LoongArch-cpu_loop-support.patch
Changes for v10:
* Delete format_insn(), use output_XXX.
Changes for v9:
* Use GPL-2.0+ SPDX license identifier.
* Move set_loongarch_cpucfg() in loongarch_3a5000_initfn().
* target/loongarch/insn_trans/trans_xxx.c rename to
target/loongarch/insn_trans/trans_xxx.c.inc.
* Split host_signal_pc and host_signal_write out of user-exec.c.
Changes for v8:
* Use the FIELD functions to define cpucfg[i].
* Re-use the decodetree to disassembler description.
* Split v7 patch(0017-LoongArch-Linux-User-Emulation.patch).
Changes for v7:
* scripts/gensyscalls.sh support loongarch64
if we use gensyscalls.sh, we need disable __BITS_PER_LONG at arch/loongarch/include/uapi/asm/bitsperlong.h
V9: https://patchew.org/QEMU/1636340895-5255-1-git-send-email-gaosong@loongson.cn/
V8: https://patchew.org/QEMU/1635760311-20015-1-git-send-email-gaosong@loongson.cn/
V7: https://patchew.org/QEMU/1634561247-25499-1-git-send-email-gaosong@loongson.cn/
Please review!
Thanks.
Song Gao (26):
target/loongarch: Add README
target/loongarch: Add core definition
target/loongarch: Add main translation routines
target/loongarch: Add fixed point arithmetic instruction translation
target/loongarch: Add fixed point shift instruction translation
target/loongarch: Add fixed point bit instruction translation
target/loongarch: Add fixed point load/store instruction translation
target/loongarch: Add fixed point atomic instruction translation
target/loongarch: Add fixed point extra instruction translation
target/loongarch: Add floating point arithmetic instruction
translation
target/loongarch: Add floating point comparison instruction
translation
target/loongarch: Add floating point conversion instruction
translation
target/loongarch: Add floating point move instruction translation
target/loongarch: Add floating point load/store instruction
translation
target/loongarch: Add branch instruction translation
target/loongarch: Add disassembler
linux-user: Add LoongArch generic header files
linux-user: Add LoongArch specific structures
linux-user: Add LoongArch signal support
linux-user: Add LoongArch elf support
linux-user: Add LoongArch syscall support
linux-user: Add LoongArch cpu_loop support
default-configs: Add loongarch linux-user support
target/loongarch: Add target build suport
target/loongarch: 'make check-tcg' support
scripts: add loongarch64 binfmt config
MAINTAINERS | 5 +
configs/targets/loongarch64-linux-user.mak | 3 +
configure | 5 +
include/disas/dis-asm.h | 2 +
include/elf.h | 2 +
linux-user/elfload.c | 58 ++
linux-user/loongarch64/cpu_loop.c | 97 +++
linux-user/loongarch64/signal.c | 162 +++++
linux-user/loongarch64/sockbits.h | 1 +
linux-user/loongarch64/syscall_nr.h | 312 +++++++++
linux-user/loongarch64/target_cpu.h | 34 +
linux-user/loongarch64/target_elf.h | 12 +
linux-user/loongarch64/target_errno_defs.h | 7 +
linux-user/loongarch64/target_fcntl.h | 6 +
linux-user/loongarch64/target_signal.h | 29 +
linux-user/loongarch64/target_structs.h | 48 ++
linux-user/loongarch64/target_syscall.h | 45 ++
linux-user/loongarch64/termbits.h | 1 +
linux-user/syscall_defs.h | 10 +-
meson.build | 3 +-
scripts/gensyscalls.sh | 1 +
scripts/qemu-binfmt-conf.sh | 6 +-
target/loongarch/README | 76 +++
target/loongarch/cpu-param.h | 18 +
target/loongarch/cpu.c | 315 +++++++++
target/loongarch/cpu.h | 253 +++++++
target/loongarch/disas.c | 696 +++++++++++++++++++
target/loongarch/fpu_helper.c | 864 ++++++++++++++++++++++++
target/loongarch/helper.h | 94 +++
target/loongarch/insn_trans/trans_arith.c.inc | 319 +++++++++
target/loongarch/insn_trans/trans_atomic.c.inc | 130 ++++
target/loongarch/insn_trans/trans_bit.c.inc | 252 +++++++
target/loongarch/insn_trans/trans_branch.c.inc | 82 +++
target/loongarch/insn_trans/trans_extra.c.inc | 84 +++
target/loongarch/insn_trans/trans_farith.c.inc | 105 +++
target/loongarch/insn_trans/trans_fcmp.c.inc | 56 ++
target/loongarch/insn_trans/trans_fcnv.c.inc | 33 +
target/loongarch/insn_trans/trans_fmemory.c.inc | 184 +++++
target/loongarch/insn_trans/trans_fmov.c.inc | 150 ++++
target/loongarch/insn_trans/trans_memory.c.inc | 232 +++++++
target/loongarch/insn_trans/trans_shift.c.inc | 128 ++++
target/loongarch/insns.decode | 479 +++++++++++++
target/loongarch/internals.h | 28 +
target/loongarch/meson.build | 19 +
target/loongarch/op_helper.c | 84 +++
target/loongarch/translate.c | 287 ++++++++
target/loongarch/translate.h | 45 ++
target/meson.build | 1 +
tests/tcg/configure.sh | 1 +
49 files changed, 5858 insertions(+), 6 deletions(-)
create mode 100644 configs/targets/loongarch64-linux-user.mak
create mode 100644 linux-user/loongarch64/cpu_loop.c
create mode 100644 linux-user/loongarch64/signal.c
create mode 100644 linux-user/loongarch64/sockbits.h
create mode 100644 linux-user/loongarch64/syscall_nr.h
create mode 100644 linux-user/loongarch64/target_cpu.h
create mode 100644 linux-user/loongarch64/target_elf.h
create mode 100644 linux-user/loongarch64/target_errno_defs.h
create mode 100644 linux-user/loongarch64/target_fcntl.h
create mode 100644 linux-user/loongarch64/target_signal.h
create mode 100644 linux-user/loongarch64/target_structs.h
create mode 100644 linux-user/loongarch64/target_syscall.h
create mode 100644 linux-user/loongarch64/termbits.h
create mode 100644 target/loongarch/README
create mode 100644 target/loongarch/cpu-param.h
create mode 100644 target/loongarch/cpu.c
create mode 100644 target/loongarch/cpu.h
create mode 100644 target/loongarch/disas.c
create mode 100644 target/loongarch/fpu_helper.c
create mode 100644 target/loongarch/helper.h
create mode 100644 target/loongarch/insn_trans/trans_arith.c.inc
create mode 100644 target/loongarch/insn_trans/trans_atomic.c.inc
create mode 100644 target/loongarch/insn_trans/trans_bit.c.inc
create mode 100644 target/loongarch/insn_trans/trans_branch.c.inc
create mode 100644 target/loongarch/insn_trans/trans_extra.c.inc
create mode 100644 target/loongarch/insn_trans/trans_farith.c.inc
create mode 100644 target/loongarch/insn_trans/trans_fcmp.c.inc
create mode 100644 target/loongarch/insn_trans/trans_fcnv.c.inc
create mode 100644 target/loongarch/insn_trans/trans_fmemory.c.inc
create mode 100644 target/loongarch/insn_trans/trans_fmov.c.inc
create mode 100644 target/loongarch/insn_trans/trans_memory.c.inc
create mode 100644 target/loongarch/insn_trans/trans_shift.c.inc
create mode 100644 target/loongarch/insns.decode
create mode 100644 target/loongarch/internals.h
create mode 100644 target/loongarch/meson.build
create mode 100644 target/loongarch/op_helper.c
create mode 100644 target/loongarch/translate.c
create mode 100644 target/loongarch/translate.h
--
1.8.3.1
^ permalink raw reply [flat|nested] 40+ messages in thread
* [PATCH v10 01/26] target/loongarch: Add README
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 02/26] target/loongarch: Add core definition Song Gao
` (24 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This patch gives an introduction to the LoongArch target.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
MAINTAINERS | 5 ++++
target/loongarch/README | 76 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 81 insertions(+)
create mode 100644 target/loongarch/README
diff --git a/MAINTAINERS b/MAINTAINERS
index d3879aa..935bbce 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -213,6 +213,11 @@ S: Maintained
F: target/hppa/
F: disas/hppa.c
+LoongArch TCG CPUS
+M: Song Gao <gaosong@loongson.cn>
+S: Maintained
+F: target/loongarch/
+
M68K TCG CPUs
M: Laurent Vivier <laurent@vivier.eu>
S: Maintained
diff --git a/target/loongarch/README b/target/loongarch/README
new file mode 100644
index 0000000..09f809c
--- /dev/null
+++ b/target/loongarch/README
@@ -0,0 +1,76 @@
+- Introduction
+
+ LoongArch is the general processor architecture of Loongson.
+
+ The following versions of the LoongArch core are supported
+ core: 3A5000
+ https://github.com/loongson/LoongArch-Documentation/releases/download/2021.08.17/LoongArch-Vol1-v1.00-EN.pdf
+
+ We can get the latest loongarch documents at https://github.com/loongson/LoongArch-Documentation/tags.
+
+
+- Linux-user emulation
+
+ We already support Linux user emulation. We can use LoongArch cross-tools to build LoongArch executables on X86 machines,
+ and We can also use qemu-loongarch64 to run LoongArch executables.
+
+ 1. Install LoongArch cross-tools on X86 machines.
+
+ Download cross-tools.
+
+ wget https://github.com/loongson/build-tools/releases/latest/download/loongarch64-clfs-20210831-cross-tools.tar.xz
+
+ tar -vxf loongarch64-clfs-20210831-cross-tools.tar.xz -C /opt
+
+ Config cross-tools env.
+
+ . setenv.sh
+
+ setenv.sh:
+
+ #!/bin/sh
+ set -x
+ CC_PREFIX=/opt/cross-tools
+
+ export PATH=$CC_PREFIX/bin:$PATH
+ export LD_LIBRARY_PATH=$CC_PREFIX/lib:$LD_LIBRARY_PATH
+ export LD_LIBRARY_PATH=$CC_PREFIX/loongarch64-unknown-linux-gnu/lib/:$LD_LIBRARY_PATH
+ set +x
+
+ 2. Test tests/tcg/multiarch.
+
+ ./configure --disable-rdma --disable-pvrdma --prefix=/usr \
+ --target-list="loongarch64-linux-user" \
+ --disable-libiscsi --disable-libnfs --disable-libpmem \
+ --disable-glusterfs --enable-libusb --enable-usb-redir \
+ --disable-opengl --disable-xen --enable-spice --disable-werror \
+ --enable-debug --disable-capstone --disable-kvm --enable-profiler
+
+ cd build/
+
+ make && make check-tcg
+
+ 3. Run LoongArch system basic command with loongarch-clfs-system.
+
+ Download clfs-system.
+
+ wget https://github.com/loongson/build-tools/releases/latest/download/loongarch64-clfs-system-2021-08-31.tar.bz2
+
+ tar -vxf loongarch64-clfs-system-2021-08-31.tar.bz2 -C /opt/clfs
+
+ Config env.
+
+ cp /opt/clfs/lib64/ld-linux-loongarch64.so.1 /lib64
+
+ export LD_LIBRARY_PATH="/opt/clfs/lib64"
+
+ Run LoongArch system basic command.
+
+ ./qemu-loongarch64 /opt/clfs/usr/bin/bash
+ ./qemu-loongarch64 /opt/clfs/usr/bin/ls
+ ./qemu-loongarch64 /opt/clfs/usr/bin/pwd
+ ...
+
+
+- Note.
+ We can get the latest LoongArch documents or LoongArch tools at https://github.com/loongson/
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 02/26] target/loongarch: Add core definition
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
2021-11-12 6:53 ` [PATCH v10 01/26] target/loongarch: Add README Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 03/26] target/loongarch: Add main translation routines Song Gao
` (23 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This patch adds target state header, target definitions
and initialization routines.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/cpu-param.h | 18 +++
target/loongarch/cpu.c | 314 +++++++++++++++++++++++++++++++++++++++++++
target/loongarch/cpu.h | 253 ++++++++++++++++++++++++++++++++++
target/loongarch/internals.h | 21 +++
4 files changed, 606 insertions(+)
create mode 100644 target/loongarch/cpu-param.h
create mode 100644 target/loongarch/cpu.c
create mode 100644 target/loongarch/cpu.h
create mode 100644 target/loongarch/internals.h
diff --git a/target/loongarch/cpu-param.h b/target/loongarch/cpu-param.h
new file mode 100644
index 0000000..9a769b6
--- /dev/null
+++ b/target/loongarch/cpu-param.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch CPU parameters for QEMU.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_CPU_PARAM_H
+#define LOONGARCH_CPU_PARAM_H
+
+#define TARGET_LONG_BITS 64
+#define TARGET_PHYS_ADDR_SPACE_BITS 48
+#define TARGET_VIRT_ADDR_SPACE_BITS 48
+
+#define TARGET_PAGE_BITS 14
+#define NB_MMU_MODES 4
+
+#endif
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
new file mode 100644
index 0000000..b3f4444
--- /dev/null
+++ b/target/loongarch/cpu.c
@@ -0,0 +1,314 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CPU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/qemu-print.h"
+#include "qapi/error.h"
+#include "qemu/module.h"
+#include "sysemu/qtest.h"
+#include "exec/exec-all.h"
+#include "qapi/qapi-commands-machine-target.h"
+#include "cpu.h"
+#include "internals.h"
+#include "fpu/softfloat-helpers.h"
+
+const char * const regnames[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+ "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+};
+
+const char * const fregnames[] = {
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
+ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
+ "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
+ "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
+};
+
+static const char * const excp_names[EXCP_LAST + 1] = {
+ [EXCP_ADE] = "Address error",
+ [EXCP_SYSCALL] = "Syscall",
+ [EXCP_BREAK] = "Break",
+ [EXCP_INE] = "Instruction Non-existent",
+ [EXCP_FPE] = "Floating Point Exception",
+};
+
+const char *loongarch_exception_name(int32_t exception)
+{
+ return excp_names[exception];
+}
+
+void QEMU_NORETURN do_raise_exception(CPULoongArchState *env,
+ uint32_t exception,
+ uintptr_t pc)
+{
+ CPUState *cs = env_cpu(env);
+
+ qemu_log_mask(CPU_LOG_INT, "%s: %d (%s)\n",
+ __func__,
+ exception,
+ loongarch_exception_name(exception));
+ cs->exception_index = exception;
+
+ cpu_loop_exit_restore(cs, pc);
+}
+
+static void loongarch_cpu_set_pc(CPUState *cs, vaddr value)
+{
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+
+ env->pc = value;
+}
+
+#ifdef CONFIG_TCG
+static void loongarch_cpu_synchronize_from_tb(CPUState *cs,
+ const TranslationBlock *tb)
+{
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+
+ env->pc = tb->pc;
+}
+#endif /* CONFIG_TCG */
+
+static bool loongarch_cpu_has_work(CPUState *cs)
+{
+ return true;
+}
+
+static void loongarch_3a5000_initfn(Object *obj)
+{
+ LoongArchCPU *cpu = LOONGARCH_CPU(obj);
+ CPULoongArchState *env = &cpu->env;
+ int i;
+
+ for (i = 0; i < 21; i++) {
+ env->cpucfg[i] = 0x0;
+ }
+
+ env->cpucfg[0] = 0x14c010; /* PRID */
+
+ uint32_t data = 0;
+ data = FIELD_DP32(data, CPUCFG1, ARCH, 2);
+ data = FIELD_DP32(data, CPUCFG1, PGMMU, 1);
+ data = FIELD_DP32(data, CPUCFG1, IOCSR, 1);
+ data = FIELD_DP32(data, CPUCFG1, PALEN, 0x2f);
+ data = FIELD_DP32(data, CPUCFG1, VALEN, 0x2f);
+ data = FIELD_DP32(data, CPUCFG1, UAL, 1);
+ data = FIELD_DP32(data, CPUCFG1, RI, 1);
+ data = FIELD_DP32(data, CPUCFG1, EP, 1);
+ data = FIELD_DP32(data, CPUCFG1, RPLV, 1);
+ data = FIELD_DP32(data, CPUCFG1, HP, 1);
+ data = FIELD_DP32(data, CPUCFG1, IOCSR_BRD, 1);
+ env->cpucfg[1] = data;
+
+ data = 0;
+ data = FIELD_DP32(data, CPUCFG2, FP, 1);
+ data = FIELD_DP32(data, CPUCFG2, FP_SP, 1);
+ data = FIELD_DP32(data, CPUCFG2, FP_DP, 1);
+ data = FIELD_DP32(data, CPUCFG2, FP_VER, 1);
+ data = FIELD_DP32(data, CPUCFG2, LLFTP, 1);
+ data = FIELD_DP32(data, CPUCFG2, LLFTP_VER, 1);
+ data = FIELD_DP32(data, CPUCFG2, LSPW, 1);
+ data = FIELD_DP32(data, CPUCFG2, LAM, 1);
+ env->cpucfg[2] = data;
+
+ env->cpucfg[4] = 0x5f5e100; /* Crystal frequency */
+
+ data = 0;
+ data = FIELD_DP32(data, CPUCFG5, CC_MUL, 1);
+ data = FIELD_DP32(data, CPUCFG5, CC_DIV, 1);
+ env->cpucfg[5] = data;
+
+ data = 0;
+ data = FIELD_DP32(data, CPUCFG16, L1_IUPRE, 1);
+ data = FIELD_DP32(data, CPUCFG16, L1_DPRE, 1);
+ data = FIELD_DP32(data, CPUCFG16, L2_IUPRE, 1);
+ data = FIELD_DP32(data, CPUCFG16, L2_IUUNIFY, 1);
+ data = FIELD_DP32(data, CPUCFG16, L2_IUPRIV, 1);
+ data = FIELD_DP32(data, CPUCFG16, L3_IUPRE, 1);
+ data = FIELD_DP32(data, CPUCFG16, L3_IUUNIFY, 1);
+ data = FIELD_DP32(data, CPUCFG16, L3_IUINCL, 1);
+ env->cpucfg[16] = data;
+
+ data = 0;
+ data = FIELD_DP32(data, CPUCFG17, L1IU_WAYS, 0x8003);
+ data = FIELD_DP32(data, CPUCFG17, L1IU_SETS, 0x60);
+ env->cpucfg[17] = data;
+
+ data = 0;
+ data = FIELD_DP32(data, CPUCFG18, L1D_WAYS, 0x8003);
+ data = FIELD_DP32(data, CPUCFG18, L1D_SETS, 0x60);
+ env->cpucfg[18] = data;
+
+ data = 0;
+ data = FIELD_DP32(data, CPUCFG19, L2IU_WAYS, 0x800f);
+ data = FIELD_DP32(data, CPUCFG19, L2IU_SETS, 0x60);
+ env->cpucfg[19] = data;
+
+ data = 0;
+ data = FIELD_DP32(data, CPUCFG20, L3IU_WAYS, 0xf00f);
+ data = FIELD_DP32(data, CPUCFG20, L3IU_SETS, 0x60);
+ env->cpucfg[20] = data;
+}
+
+static void loongarch_cpu_list_entry(gpointer data, gpointer user_data)
+{
+ const char *typename = object_class_get_name(OBJECT_CLASS(data));
+
+ qemu_printf("%s\n", typename);
+}
+
+void loongarch_cpu_list(void)
+{
+ GSList *list;
+ list = object_class_get_list_sorted(TYPE_LOONGARCH_CPU, false);
+ g_slist_foreach(list, loongarch_cpu_list_entry, NULL);
+ g_slist_free(list);
+}
+
+static void loongarch_cpu_reset(DeviceState *dev)
+{
+ CPUState *cs = CPU(dev);
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(cpu);
+ CPULoongArchState *env = &cpu->env;
+
+ lacc->parent_reset(dev);
+
+ env->fcsr0_mask = 0x1f1f031f;
+ env->fcsr0 = 0x0;
+
+ cs->exception_index = EXCP_NONE;
+}
+
+static void loongarch_cpu_disas_set_info(CPUState *s, disassemble_info *info)
+{
+ info->print_insn = print_insn_loongarch;
+}
+
+static void loongarch_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+ CPUState *cs = CPU(dev);
+ LoongArchCPUClass *lacc = LOONGARCH_CPU_GET_CLASS(dev);
+ Error *local_err = NULL;
+
+ cpu_exec_realizefn(cs, &local_err);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ cpu_reset(cs);
+ qemu_init_vcpu(cs);
+
+ lacc->parent_realize(dev, errp);
+}
+
+static void loongarch_cpu_initfn(Object *obj)
+{
+ LoongArchCPU *cpu = LOONGARCH_CPU(obj);
+
+ cpu_set_cpustate_pointers(cpu);
+}
+
+static ObjectClass *loongarch_cpu_class_by_name(const char *cpu_model)
+{
+ ObjectClass *oc;
+ char *typename;
+
+ typename = g_strdup_printf(LOONGARCH_CPU_TYPE_NAME("%s"), cpu_model);
+ oc = object_class_by_name(typename);
+ g_free(typename);
+ return oc;
+}
+
+void loongarch_cpu_dump_state(CPUState *cs, FILE *f, int flags)
+{
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+ int i;
+
+ qemu_fprintf(f, " PC=%016" PRIx64 " ", env->pc);
+ qemu_fprintf(f, " FCSR0 0x%08x fp_status 0x%02x\n", env->fcsr0,
+ get_float_exception_flags(&env->fp_status));
+
+ /* gpr */
+ for (i = 0; i < 32; i++) {
+ if ((i & 3) == 0) {
+ qemu_fprintf(f, " GPR%02d:", i);
+ }
+ qemu_fprintf(f, " %s %016" PRIx64, regnames[i], env->gpr[i]);
+ if ((i & 3) == 3) {
+ qemu_fprintf(f, "\n");
+ }
+ }
+
+ /* fpr */
+ if (flags & CPU_DUMP_FPU) {
+ for (i = 0; i < 32; i++) {
+ qemu_fprintf(f, " %s %016" PRIx64, fregnames[i], env->fpr[i]);
+ if ((i & 3) == 3) {
+ qemu_fprintf(f, "\n");
+ }
+ }
+ }
+}
+
+#ifdef CONFIG_TCG
+#include "hw/core/tcg-cpu-ops.h"
+
+static struct TCGCPUOps loongarch_tcg_ops = {
+ .initialize = loongarch_translate_init,
+ .synchronize_from_tb = loongarch_cpu_synchronize_from_tb,
+};
+#endif /* CONFIG_TCG */
+
+static void loongarch_cpu_class_init(ObjectClass *c, void *data)
+{
+ LoongArchCPUClass *lacc = LOONGARCH_CPU_CLASS(c);
+ CPUClass *cc = CPU_CLASS(c);
+ DeviceClass *dc = DEVICE_CLASS(c);
+
+ device_class_set_parent_realize(dc, loongarch_cpu_realizefn,
+ &lacc->parent_realize);
+ device_class_set_parent_reset(dc, loongarch_cpu_reset, &lacc->parent_reset);
+
+ cc->class_by_name = loongarch_cpu_class_by_name;
+ cc->has_work = loongarch_cpu_has_work;
+ cc->dump_state = loongarch_cpu_dump_state;
+ cc->set_pc = loongarch_cpu_set_pc;
+ cc->disas_set_info = loongarch_cpu_disas_set_info;
+#ifdef CONFIG_TCG
+ cc->tcg_ops = &loongarch_tcg_ops;
+#endif
+}
+
+#define DEFINE_LOONGARCH_CPU_TYPE(model, initfn) \
+ { \
+ .parent = TYPE_LOONGARCH_CPU, \
+ .instance_init = initfn, \
+ .name = LOONGARCH_CPU_TYPE_NAME(model), \
+ }
+
+static const TypeInfo loongarch_cpu_type_infos[] = {
+ {
+ .name = TYPE_LOONGARCH_CPU,
+ .parent = TYPE_CPU,
+ .instance_size = sizeof(LoongArchCPU),
+ .instance_init = loongarch_cpu_initfn,
+
+ .abstract = true,
+ .class_size = sizeof(LoongArchCPUClass),
+ .class_init = loongarch_cpu_class_init,
+ },
+ DEFINE_LOONGARCH_CPU_TYPE("Loongson-3A5000", loongarch_3a5000_initfn),
+};
+
+DEFINE_TYPES(loongarch_cpu_type_infos)
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
new file mode 100644
index 0000000..7509c77
--- /dev/null
+++ b/target/loongarch/cpu.h
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CPU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_CPU_H
+#define LOONGARCH_CPU_H
+
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat-types.h"
+#include "hw/registerfields.h"
+
+#define TCG_GUEST_DEFAULT_MO (0)
+
+#define FCSR0_M1 0x1f /* FCSR1 mask, Enables */
+#define FCSR0_M2 0x1f1f0000 /* FCSR2 mask, Cause and Flags */
+#define FCSR0_M3 0x300 /* FCSR3 mask, Round Mode */
+#define FCSR0_RM 8 /* Round Mode bit num on fcsr0 */
+
+FIELD(FCSR0, ENABLES, 0, 5)
+FIELD(FCSR0, RM, 8, 2)
+FIELD(FCSR0, FLAGS, 16, 5)
+FIELD(FCSR0, CAUSE, 24, 5)
+
+#define GET_FP_CAUSE(REG) FIELD_EX32(REG, FCSR0, CAUSE)
+#define SET_FP_CAUSE(REG, V) FIELD_DP32(REG, FCSR0, CAUSE, V)
+#define GET_FP_ENABLES(REG) FIELD_EX32(REG, FCSR0, ENABLES)
+#define SET_FP_ENABLES(REG, V) FIELD_DP32(REG, FCSR0, ENABLES, V)
+#define GET_FP_FLAGS(REG) FIELD_EX32(REG, FCSR0, FLAGS)
+#define SET_FP_FLAGS(REG, V) FIELD_DP32(REG, FCSR0, FLAGS, V)
+#define UPDATE_FP_FLAGS(REG, V) \
+ do { \
+ (REG) |= FIELD_DP32(0, FCSR0, FLAGS, V); \
+ } while (0)
+
+#define FP_INEXACT 1
+#define FP_UNDERFLOW 2
+#define FP_OVERFLOW 4
+#define FP_DIV0 8
+#define FP_INVALID 16
+
+/* cpucfg[0] bits */
+FIELD(CPUCFG0, PRID, 0, 32)
+
+/* cpucfg[1] bits */
+FIELD(CPUCFG1, ARCH, 0, 2)
+FIELD(CPUCFG1, PGMMU, 2, 1)
+FIELD(CPUCFG1, IOCSR, 3, 1)
+FIELD(CPUCFG1, PALEN, 4, 8)
+FIELD(CPUCFG1, VALEN, 12, 8)
+FIELD(CPUCFG1, UAL, 20, 1)
+FIELD(CPUCFG1, RI, 21, 1)
+FIELD(CPUCFG1, EP, 22, 1)
+FIELD(CPUCFG1, RPLV, 23, 1)
+FIELD(CPUCFG1, HP, 24, 1)
+FIELD(CPUCFG1, IOCSR_BRD, 25, 1)
+FIELD(CPUCFG1, MSG_INT, 26, 1)
+
+/* cpucfg[2] bits */
+FIELD(CPUCFG2, FP, 0, 1)
+FIELD(CPUCFG2, FP_SP, 1, 1)
+FIELD(CPUCFG2, FP_DP, 2, 1)
+FIELD(CPUCFG2, FP_VER, 3, 3)
+FIELD(CPUCFG2, LSX, 6, 1)
+FIELD(CPUCFG2, LASX, 7, 1)
+FIELD(CPUCFG2, COMPLEX, 8, 1)
+FIELD(CPUCFG2, CRYPTO, 9, 1)
+FIELD(CPUCFG2, LVZ, 10, 1)
+FIELD(CPUCFG2, LVZ_VER, 11, 3)
+FIELD(CPUCFG2, LLFTP, 14, 1)
+FIELD(CPUCFG2, LLFTP_VER, 15, 3)
+FIELD(CPUCFG2, LBT_X86, 18, 1)
+FIELD(CPUCFG2, LBT_ARM, 19, 1)
+FIELD(CPUCFG2, LBT_MIPS, 20, 1)
+FIELD(CPUCFG2, LSPW, 21, 1)
+FIELD(CPUCFG2, LAM, 22, 1)
+
+/* cpucfg[3] bits */
+FIELD(CPUCFG3, CCDMA, 0, 1)
+FIELD(CPUCFG3, SFB, 1, 1)
+FIELD(CPUCFG3, UCACC, 2, 1)
+FIELD(CPUCFG3, LLEXC, 3, 1)
+FIELD(CPUCFG3, SCDLY, 4, 1)
+FIELD(CPUCFG3, LLDBAR, 5, 1)
+FIELD(CPUCFG3, ITLBHMC, 6, 1)
+FIELD(CPUCFG3, ICHMC, 7, 1)
+FIELD(CPUCFG3, SPW_LVL, 8, 3)
+FIELD(CPUCFG3, SPW_HP_HF, 11, 1)
+FIELD(CPUCFG3, RVA, 12, 1)
+FIELD(CPUCFG3, RVAMAX, 13, 4)
+
+/* cpucfg[4] bits */
+FIELD(CPUCFG4, CC_FREQ, 0, 32)
+
+/* cpucfg[5] bits */
+FIELD(CPUCFG5, CC_MUL, 0, 16)
+FIELD(CPUCFG5, CC_DIV, 16, 16)
+
+/* cpucfg[6] bits */
+FIELD(CPUCFG6, PMP, 0, 1)
+FIELD(CPUCFG6, PMVER, 1, 3)
+FIELD(CPUCFG6, PMNUM, 4, 4)
+FIELD(CPUCFG6, PMBITS, 8, 6)
+FIELD(CPUCFG6, UPM, 14, 1)
+
+/* cpucfg[16] bits */
+FIELD(CPUCFG16, L1_IUPRE, 0, 1)
+FIELD(CPUCFG16, L1_IUUNIFY, 1, 1)
+FIELD(CPUCFG16, L1_DPRE, 2, 1)
+FIELD(CPUCFG16, L2_IUPRE, 3, 1)
+FIELD(CPUCFG16, L2_IUUNIFY, 4, 1)
+FIELD(CPUCFG16, L2_IUPRIV, 5, 1)
+FIELD(CPUCFG16, L2_IUINCL, 6, 1)
+FIELD(CPUCFG16, L2_DPRE, 7, 1)
+FIELD(CPUCFG16, L2_DPRIV, 8, 1)
+FIELD(CPUCFG16, L2_DINCL, 9, 1)
+FIELD(CPUCFG16, L3_IUPRE, 10, 1)
+FIELD(CPUCFG16, L3_IUUNIFY, 11, 1)
+FIELD(CPUCFG16, L3_IUPRIV, 12, 1)
+FIELD(CPUCFG16, L3_IUINCL, 13, 1)
+FIELD(CPUCFG16, L3_DPRE, 14, 1)
+FIELD(CPUCFG16, L3_DPRIV, 15, 1)
+FIELD(CPUCFG16, L3_DINCL, 16, 1)
+
+/* cpucfg[17] bits */
+FIELD(CPUCFG17, L1IU_WAYS, 0, 16)
+FIELD(CPUCFG17, L1IU_SETS, 16, 8)
+FIELD(CPUCFG17, L1IU_SIZE, 24, 7)
+
+/* cpucfg[18] bits */
+FIELD(CPUCFG18, L1D_WAYS, 0, 16)
+FIELD(CPUCFG18, L1D_SETS, 16, 8)
+FIELD(CPUCFG18, L1D_SIZE, 24, 7)
+
+/* cpucfg[19] bits */
+FIELD(CPUCFG19, L2IU_WAYS, 0, 16)
+FIELD(CPUCFG19, L2IU_SETS, 16, 8)
+FIELD(CPUCFG19, L2IU_SIZE, 24, 7)
+
+/* cpucfg[20] bits */
+FIELD(CPUCFG20, L3IU_WAYS, 0, 16)
+FIELD(CPUCFG20, L3IU_SETS, 16, 8)
+FIELD(CPUCFG20, L3IU_SIZE, 24, 7)
+
+extern const char * const regnames[];
+extern const char * const fregnames[];
+
+typedef struct CPULoongArchState CPULoongArchState;
+struct CPULoongArchState {
+ uint64_t gpr[32];
+ uint64_t pc;
+
+ uint64_t fpr[32];
+ float_status fp_status;
+ bool cf[8];
+
+ /*
+ * fcsr0
+ * 31:29 |28:24 |23:21 |20:16 |15:10 |9:8 |7:5 |4:0
+ * Cause Flags RM Enables
+ */
+ uint32_t fcsr0;
+ uint32_t fcsr0_mask;
+
+ uint32_t cpucfg[21];
+
+ uint64_t lladdr; /* LL virtual address compared against SC */
+ uint64_t llval;
+
+ uint64_t badaddr;
+};
+
+/**
+ * LoongArchCPU:
+ * @env: #CPULoongArchState
+ *
+ * A LoongArch CPU.
+ */
+struct LoongArchCPU {
+ /*< private >*/
+ CPUState parent_obj;
+ /*< public >*/
+
+ CPUNegativeOffsetState neg;
+ CPULoongArchState env;
+};
+
+#define TYPE_LOONGARCH_CPU "loongarch-cpu"
+
+OBJECT_DECLARE_TYPE(LoongArchCPU, LoongArchCPUClass,
+ LOONGARCH_CPU)
+
+/**
+ * LoongArchCPUClass:
+ * @parent_realize: The parent class' realize handler.
+ * @parent_reset: The parent class' reset handler.
+ *
+ * A LoongArch CPU model.
+ */
+struct LoongArchCPUClass {
+ /*< private >*/
+ CPUClass parent_class;
+ /*< public >*/
+
+ DeviceRealize parent_realize;
+ DeviceReset parent_reset;
+};
+
+#define MMU_USER_IDX 3
+
+static inline int cpu_mmu_index(CPULoongArchState *env, bool ifetch)
+{
+ return MMU_USER_IDX;
+}
+
+static inline void cpu_get_tb_cpu_state(CPULoongArchState *env,
+ target_ulong *pc,
+ target_ulong *cs_base,
+ uint32_t *flags)
+{
+ *pc = env->pc;
+ *cs_base = 0;
+ *flags = cpu_mmu_index(env, false);
+}
+
+void loongarch_cpu_list(void);
+
+#define cpu_list loongarch_cpu_list
+
+typedef CPULoongArchState CPUArchState;
+typedef LoongArchCPU ArchCPU;
+
+#include "exec/cpu-all.h"
+
+/* Exceptions */
+enum {
+ EXCP_NONE = -1,
+ EXCP_ADE = 0,
+ EXCP_SYSCALL,
+ EXCP_BREAK,
+ EXCP_INE,
+ EXCP_FPE,
+
+ EXCP_LAST = EXCP_FPE,
+};
+
+#define LOONGARCH_CPU_TYPE_SUFFIX "-" TYPE_LOONGARCH_CPU
+#define LOONGARCH_CPU_TYPE_NAME(model) model LOONGARCH_CPU_TYPE_SUFFIX
+#define CPU_RESOLVING_TYPE TYPE_LOONGARCH_CPU
+
+#endif /* LOONGARCH_CPU_H */
diff --git a/target/loongarch/internals.h b/target/loongarch/internals.h
new file mode 100644
index 0000000..1e69e7d
--- /dev/null
+++ b/target/loongarch/internals.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch CPU -- internal functions and types
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_INTERNALS_H
+#define LOONGARCH_INTERNALS_H
+
+void loongarch_translate_init(void);
+
+void loongarch_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
+
+void QEMU_NORETURN do_raise_exception(CPULoongArchState *env,
+ uint32_t exception,
+ uintptr_t pc);
+
+const char *loongarch_exception_name(int32_t exception);
+
+#endif
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 03/26] target/loongarch: Add main translation routines
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
2021-11-12 6:53 ` [PATCH v10 01/26] target/loongarch: Add README Song Gao
2021-11-12 6:53 ` [PATCH v10 02/26] target/loongarch: Add core definition Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation Song Gao
` (22 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This patch adds main translation routines and
basic functions for translation.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/helper.h | 6 ++
target/loongarch/op_helper.c | 21 ++++++
target/loongarch/translate.c | 159 +++++++++++++++++++++++++++++++++++++++++++
target/loongarch/translate.h | 26 +++++++
4 files changed, 212 insertions(+)
create mode 100644 target/loongarch/helper.h
create mode 100644 target/loongarch/op_helper.c
create mode 100644 target/loongarch/translate.c
create mode 100644 target/loongarch/translate.h
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
new file mode 100644
index 0000000..eb771c0
--- /dev/null
+++ b/target/loongarch/helper.h
@@ -0,0 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+DEF_HELPER_2(raise_exception, noreturn, env, i32)
diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c
new file mode 100644
index 0000000..9038109
--- /dev/null
+++ b/target/loongarch/op_helper.c
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch emulation helpers for QEMU.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/main-loop.h"
+#include "cpu.h"
+#include "qemu/host-utils.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "internals.h"
+
+/* Exceptions helpers */
+void helper_raise_exception(CPULoongArchState *env, uint32_t exception)
+{
+ do_raise_exception(env, exception, GETPC());
+}
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
new file mode 100644
index 0000000..048c895
--- /dev/null
+++ b/target/loongarch/translate.c
@@ -0,0 +1,159 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch emulation for QEMU - main translation routines.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "tcg/tcg-op.h"
+#include "exec/translator.h"
+#include "exec/helper-proto.h"
+#include "exec/helper-gen.h"
+
+#include "exec/translator.h"
+#include "exec/log.h"
+#include "qemu/qemu-print.h"
+#include "translate.h"
+#include "internals.h"
+
+/* Global register indices */
+TCGv cpu_gpr[32], cpu_pc;
+static TCGv cpu_lladdr, cpu_llval;
+TCGv_i32 cpu_fcsr0;
+TCGv_i64 cpu_fpr[32];
+
+#define DISAS_STOP DISAS_TARGET_0
+
+void generate_exception(DisasContext *ctx, int excp)
+{
+ tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
+ gen_helper_raise_exception(cpu_env, tcg_constant_i32(excp));
+ ctx->base.is_jmp = DISAS_NORETURN;
+}
+
+static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
+{
+ if (translator_use_goto_tb(&ctx->base, dest)) {
+ tcg_gen_goto_tb(n);
+ tcg_gen_movi_tl(cpu_pc, dest);
+ tcg_gen_exit_tb(ctx->base.tb, n);
+ } else {
+ tcg_gen_movi_tl(cpu_pc, dest);
+ tcg_gen_lookup_and_goto_ptr();
+ }
+}
+
+static void loongarch_tr_init_disas_context(DisasContextBase *dcbase,
+ CPUState *cs)
+{
+ int64_t bound;
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+ ctx->page_start = ctx->base.pc_first & TARGET_PAGE_MASK;
+ ctx->mem_idx = ctx->base.tb->flags;
+
+ /* Bound the number of insns to execute to those left on the page. */
+ bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4;
+ ctx->base.max_insns = MIN(ctx->base.max_insns, bound);
+}
+
+static void loongarch_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
+{
+}
+
+static void loongarch_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+ tcg_gen_insn_start(ctx->base.pc_next);
+}
+
+static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
+{
+ CPULoongArchState *env = cs->env_ptr;
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+ ctx->opcode = cpu_ldl_code(env, ctx->base.pc_next);
+
+ if (!decode(ctx, ctx->opcode)) {
+ qemu_log_mask(LOG_UNIMP, "Error: unkown opcode. 0x%lx: 0x%x\n",
+ ctx->base.pc_next, ctx->opcode);
+ generate_exception(ctx, EXCP_INE);
+ }
+
+ ctx->base.pc_next += 4;
+}
+
+static void loongarch_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
+{
+ DisasContext *ctx = container_of(dcbase, DisasContext, base);
+
+ switch (ctx->base.is_jmp) {
+ case DISAS_STOP:
+ tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
+ tcg_gen_lookup_and_goto_ptr();
+ break;
+ case DISAS_TOO_MANY:
+ gen_goto_tb(ctx, 0, ctx->base.pc_next);
+ break;
+ case DISAS_NORETURN:
+ break;
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static void loongarch_tr_disas_log(const DisasContextBase *dcbase, CPUState *cs)
+{
+ qemu_log("IN: %s\n", lookup_symbol(dcbase->pc_first));
+ log_target_disas(cs, dcbase->pc_first, dcbase->tb->size);
+}
+
+static const TranslatorOps loongarch_tr_ops = {
+ .init_disas_context = loongarch_tr_init_disas_context,
+ .tb_start = loongarch_tr_tb_start,
+ .insn_start = loongarch_tr_insn_start,
+ .translate_insn = loongarch_tr_translate_insn,
+ .tb_stop = loongarch_tr_tb_stop,
+ .disas_log = loongarch_tr_disas_log,
+};
+
+void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
+{
+ DisasContext ctx;
+
+ translator_loop(&loongarch_tr_ops, &ctx.base, cs, tb, max_insns);
+}
+
+void loongarch_translate_init(void)
+{
+ int i;
+
+ cpu_gpr[0] = NULL;
+ for (i = 1; i < 32; i++) {
+ cpu_gpr[i] = tcg_global_mem_new(cpu_env,
+ offsetof(CPULoongArchState, gpr[i]),
+ regnames[i]);
+ }
+
+ for (i = 0; i < 32; i++) {
+ int off = offsetof(CPULoongArchState, fpr[i]);
+ cpu_fpr[i] = tcg_global_mem_new_i64(cpu_env, off, fregnames[i]);
+ }
+
+ cpu_pc = tcg_global_mem_new(cpu_env, offsetof(CPULoongArchState, pc), "pc");
+ cpu_fcsr0 = tcg_global_mem_new_i32(cpu_env,
+ offsetof(CPULoongArchState, fcsr0), "fcsr0");
+ cpu_lladdr = tcg_global_mem_new(cpu_env,
+ offsetof(CPULoongArchState, lladdr), "lladdr");
+ cpu_llval = tcg_global_mem_new(cpu_env,
+ offsetof(CPULoongArchState, llval), "llval");
+}
+
+void restore_state_to_opc(CPULoongArchState *env, TranslationBlock *tb,
+ target_ulong *data)
+{
+ env->pc = data[0];
+}
diff --git a/target/loongarch/translate.h b/target/loongarch/translate.h
new file mode 100644
index 0000000..6cc7f1a
--- /dev/null
+++ b/target/loongarch/translate.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch translation routines.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef TARGET_LOONGARCH_TRANSLATE_H
+#define TARGET_LOONGARCH_TRANSLATE_H
+
+#include "exec/translator.h"
+
+typedef struct DisasContext {
+ DisasContextBase base;
+ target_ulong page_start;
+ uint32_t opcode;
+ int mem_idx;
+} DisasContext;
+
+void generate_exception(DisasContext *ctx, int excp);
+
+extern TCGv cpu_gpr[32], cpu_pc;
+extern TCGv_i32 cpu_fscr0;
+extern TCGv_i64 cpu_fpr[32];
+
+#endif
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (2 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 03/26] target/loongarch: Add main translation routines Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 14:05 ` Richard Henderson
2021-11-12 6:53 ` [PATCH v10 05/26] target/loongarch: Add fixed point shift " Song Gao
` (21 subsequent siblings)
25 siblings, 1 reply; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- ADD.{W/D}, SUB.{W/D}
- ADDI.{W/D}, ADDU16ID
- ALSL.{W[U]/D}
- LU12I.W, LU32I.D LU52I.D
- SLT[U], SLT[U]I
- PCADDI, PCADDU12I, PCADDU18I, PCALAU12I
- AND, OR, NOR, XOR, ANDN, ORN
- MUL.{W/D}, MULH.{W[U]/D[U]}
- MULW.D.W[U]
- DIV.{W[U]/D[U]}, MOD.{W[U]/D[U]}
- ANDI, ORI, XORI
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/insn_trans/trans_arith.c.inc | 319 ++++++++++++++++++++++++++
target/loongarch/insns.decode | 88 +++++++
target/loongarch/translate.c | 78 +++++++
target/loongarch/translate.h | 19 ++
4 files changed, 504 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_arith.c.inc
create mode 100644 target/loongarch/insns.decode
diff --git a/target/loongarch/insn_trans/trans_arith.c.inc b/target/loongarch/insn_trans/trans_arith.c.inc
new file mode 100644
index 0000000..384a158
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_arith.c.inc
@@ -0,0 +1,319 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_r3(DisasContext *ctx, arg_fmt_rdrjrk *a,
+ DisasExtend src1_ext, DisasExtend src2_ext,
+ DisasExtend dst_ext, void (*func)(TCGv, TCGv, TCGv))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+ TCGv src1 = gpr_src(ctx, a->rj, src1_ext);
+ TCGv src2 = gpr_src(ctx, a->rk, src2_ext);
+
+ func(dest, src1, src2);
+
+ /* dst_ext is EXT_NONE and input is dest, We don't run gen_set_gpr. */
+ if (dst_ext) {
+ gen_set_gpr(a->rd, dest, dst_ext);
+ }
+ return true;
+}
+
+static bool gen_r2_si12(DisasContext *ctx, arg_fmt_rdrjsi12 *a,
+ DisasExtend src_ext, DisasExtend dst_ext,
+ void (*func)(TCGv, TCGv, TCGv))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+ TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+ TCGv src2 = tcg_constant_tl(a->si12);
+
+ func(dest, src1, src2);
+
+ if (dst_ext) {
+ gen_set_gpr(a->rd, dest, dst_ext);
+ }
+ return true;
+}
+
+static bool gen_r3_sa2(DisasContext *ctx, arg_fmt_rdrjrksa2 *a,
+ DisasExtend src_ext, DisasExtend dst_ext,
+ void (*func)(TCGv, TCGv, TCGv, TCGv, target_long))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+ TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+ TCGv src2 = gpr_src(ctx, a->rk, src_ext);
+ TCGv temp = tcg_temp_new();
+
+ func(dest, src1, src2, temp, a->sa2);
+
+ if (dst_ext) {
+ gen_set_gpr(a->rd, dest, dst_ext);
+ }
+ tcg_temp_free(temp);
+ return true;
+}
+
+static bool trans_lu12i_w(DisasContext *ctx, arg_lu12i_w *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+
+ tcg_gen_movi_tl(dest, a->si20 << 12);
+ return true;
+}
+
+static bool gen_pc(DisasContext *ctx, arg_fmt_rdsi20 *a,
+ target_ulong (*func)(target_ulong, int))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ target_ulong addr = func(ctx->base.pc_next, a->si20);
+
+ tcg_gen_movi_tl(dest, addr);
+ return true;
+}
+
+static bool gen_r2_ui12(DisasContext *ctx, arg_fmt_rdrjui12 *a,
+ void (*func)(TCGv, TCGv, target_long))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ func(dest, src1, a->ui12);
+ return true;
+}
+
+static void gen_slt(TCGv dest, TCGv src1, TCGv src2)
+{
+ tcg_gen_setcond_tl(TCG_COND_LT, dest, src1, src2);
+}
+
+static void gen_sltu(TCGv dest, TCGv src1, TCGv src2)
+{
+ tcg_gen_setcond_tl(TCG_COND_LTU, dest, src1, src2);
+}
+
+static void gen_mulh_w(TCGv dest, TCGv src1, TCGv src2)
+{
+ tcg_gen_mul_i64(dest, src1, src2);
+ tcg_gen_sari_i64(dest, dest, 32);
+}
+
+static void gen_mulh_wu(TCGv dest, TCGv src1, TCGv src2)
+{
+ tcg_gen_mul_i64(dest, src1, src2);
+ tcg_gen_sari_i64(dest, dest, 32);
+}
+
+static void gen_mulh_d(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv discard = tcg_temp_new();
+ tcg_gen_muls2_tl(discard, dest, src1, src2);
+ tcg_temp_free(discard);
+}
+
+static void gen_mulh_du(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv discard = tcg_temp_new();
+ tcg_gen_mulu2_tl(discard, dest, src1, src2);
+ tcg_temp_free(discard);
+}
+
+static void prep_divisor_d(TCGv ret, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ TCGv t1 = tcg_temp_new();
+ TCGv zero = tcg_constant_tl(0);
+
+ /*
+ * If min / -1, set the divisor to 1.
+ * This avoids potential host overflow trap and produces min.
+ * If x / 0, set the divisor to 1.
+ * This avoids potential host overflow trap;
+ * the required result is undefined.
+ */
+ tcg_gen_setcondi_tl(TCG_COND_EQ, ret, src1, INT64_MIN);
+ tcg_gen_setcondi_tl(TCG_COND_EQ, t0, src2, -1);
+ tcg_gen_setcondi_tl(TCG_COND_EQ, t1, src2, 0);
+ tcg_gen_and_tl(ret, ret, t0);
+ tcg_gen_or_tl(ret, ret, t1);
+ tcg_gen_movcond_tl(TCG_COND_NE, ret, ret, zero, ret, src2);
+
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static void prep_divisor_du(TCGv ret, TCGv src2)
+{
+ TCGv zero = tcg_constant_tl(0);
+ TCGv one = tcg_constant_tl(1);
+
+ /*
+ * If x / 0, set the divisor to 1.
+ * This avoids potential host overflow trap;
+ * the required result is undefined.
+ */
+ tcg_gen_movcond_tl(TCG_COND_EQ, ret, src2, zero, one, src2);
+}
+
+static void gen_div_d(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ prep_divisor_d(t0, src1, src2);
+ tcg_gen_div_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_rem_d(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ prep_divisor_d(t0, src1, src2);
+ tcg_gen_rem_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_div_du(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ prep_divisor_du(t0, src2);
+ tcg_gen_divu_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_rem_du(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ prep_divisor_du(t0, src2);
+ tcg_gen_remu_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_div_w(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ /* We need not check for integer overflow for div_w. */
+ prep_divisor_du(t0, src2);
+ tcg_gen_div_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_rem_w(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ /* We need not check for integer overflow for rem_w. */
+ prep_divisor_du(t0, src2);
+ tcg_gen_rem_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_alsl_w(TCGv dest, TCGv src1, TCGv src2,
+ TCGv temp, target_long sa2)
+{
+ tcg_gen_shli_tl(temp, src1, sa2 + 1);
+ tcg_gen_add_tl(dest, temp, src2);
+}
+
+static void gen_alsl_wu(TCGv dest, TCGv src1, TCGv src2,
+ TCGv temp, target_long sa2)
+{
+ tcg_gen_shli_tl(temp, src1, sa2 + 1);
+ tcg_gen_add_tl(dest, temp, src2);
+}
+
+static void gen_alsl_d(TCGv dest, TCGv src1, TCGv src2,
+ TCGv temp, target_long sa2)
+{
+ tcg_gen_shli_tl(temp, src1, sa2 + 1);
+ tcg_gen_add_tl(dest, temp, src2);
+}
+
+static bool trans_lu32i_d(DisasContext *ctx, arg_lu32i_d *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rd, EXT_NONE);
+ TCGv src2 = tcg_constant_tl(a->si20);
+
+ tcg_gen_deposit_tl(dest, src1, src2, 32, 32);
+ return true;
+}
+
+static bool trans_lu52i_d(DisasContext *ctx, arg_lu52i_d *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = tcg_constant_tl(a->si12);
+
+ tcg_gen_deposit_tl(dest, src1, src2, 52, 12);
+ return true;
+}
+
+static target_ulong gen_pcaddi(target_ulong pc, int si20)
+{
+ return pc + (si20 << 2);
+}
+
+static target_ulong gen_pcalau12i(target_ulong pc, int si20)
+{
+ return (pc + (si20 << 12)) & ~0xfff;
+}
+
+static target_ulong gen_pcaddu12i(target_ulong pc, int si20)
+{
+ return pc + (si20 << 12);
+}
+
+static target_ulong gen_pcaddu18i(target_ulong pc, int si20)
+{
+ return pc + ((target_ulong)(si20) << 18);
+}
+
+static bool trans_addu16i_d(DisasContext *ctx, arg_addu16i_d *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ tcg_gen_addi_tl(dest, src1, a->si16 << 16);
+ return true;
+}
+
+TRANS(add_w, gen_r3, EXT_NONE, EXT_NONE, EXT_SIGN, tcg_gen_add_tl)
+TRANS(add_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_add_tl)
+TRANS(sub_w, gen_r3, EXT_NONE, EXT_NONE, EXT_SIGN, tcg_gen_sub_tl)
+TRANS(sub_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_sub_tl)
+TRANS(and, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_and_tl)
+TRANS(or, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_or_tl)
+TRANS(xor, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_xor_tl)
+TRANS(nor, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_nor_tl)
+TRANS(andn, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_andc_tl)
+TRANS(orn, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_orc_tl)
+TRANS(slt, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_slt)
+TRANS(sltu, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_sltu)
+TRANS(mul_w, gen_r3, EXT_SIGN, EXT_SIGN, EXT_SIGN, tcg_gen_mul_tl)
+TRANS(mul_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, tcg_gen_mul_tl)
+TRANS(mulh_w, gen_r3, EXT_SIGN, EXT_SIGN, EXT_NONE, gen_mulh_w)
+TRANS(mulh_wu, gen_r3, EXT_ZERO, EXT_ZERO, EXT_NONE, gen_mulh_wu)
+TRANS(mulh_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_mulh_d)
+TRANS(mulh_du, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_mulh_du)
+TRANS(mulw_d_w, gen_r3, EXT_SIGN, EXT_SIGN, EXT_NONE, tcg_gen_mul_tl)
+TRANS(mulw_d_wu, gen_r3, EXT_ZERO, EXT_ZERO, EXT_NONE, tcg_gen_mul_tl)
+TRANS(div_w, gen_r3, EXT_SIGN, EXT_SIGN, EXT_SIGN, gen_div_w)
+TRANS(mod_w, gen_r3, EXT_SIGN, EXT_SIGN, EXT_SIGN, gen_rem_w)
+TRANS(div_wu, gen_r3, EXT_ZERO, EXT_ZERO, EXT_SIGN, gen_div_du)
+TRANS(mod_wu, gen_r3, EXT_ZERO, EXT_ZERO, EXT_SIGN, gen_rem_du)
+TRANS(div_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_div_d)
+TRANS(mod_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_rem_d)
+TRANS(div_du, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_div_du)
+TRANS(mod_du, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_rem_du)
+TRANS(slti, gen_r2_si12, EXT_NONE, EXT_NONE, gen_slt)
+TRANS(sltui, gen_r2_si12, EXT_NONE, EXT_NONE, gen_sltu)
+TRANS(addi_w, gen_r2_si12, EXT_NONE, EXT_SIGN, tcg_gen_add_tl)
+TRANS(addi_d, gen_r2_si12, EXT_NONE, EXT_NONE, tcg_gen_add_tl)
+TRANS(alsl_w, gen_r3_sa2, EXT_NONE, EXT_SIGN, gen_alsl_w)
+TRANS(alsl_wu, gen_r3_sa2, EXT_NONE, EXT_ZERO, gen_alsl_wu)
+TRANS(alsl_d, gen_r3_sa2, EXT_NONE, EXT_NONE, gen_alsl_d)
+TRANS(pcaddi, gen_pc, gen_pcaddi)
+TRANS(pcalau12i, gen_pc, gen_pcalau12i)
+TRANS(pcaddu12i, gen_pc, gen_pcaddu12i)
+TRANS(pcaddu18i, gen_pc, gen_pcaddu18i)
+TRANS(andi, gen_r2_ui12, tcg_gen_andi_tl)
+TRANS(ori, gen_r2_ui12, tcg_gen_ori_tl)
+TRANS(xori, gen_r2_ui12, tcg_gen_xori_tl)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
new file mode 100644
index 0000000..3e6a051
--- /dev/null
+++ b/target/loongarch/insns.decode
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# LoongArch instruction decode definitions.
+#
+# Copyright (c) 2021 Loongson Technology Corporation Limited
+#
+
+#
+# Fields
+#
+%rd 0:5
+%rj 5:5
+%rk 10:5
+%sa2 15:2
+%si12 10:s12
+%ui12 10:12
+%si16 10:s16
+%si20 5:s20
+
+#
+# Argument sets
+#
+&fmt_rdrjrk rd rj rk
+&fmt_rdrjsi12 rd rj si12
+&fmt_rdrjrksa2 rd rj rk sa2
+&fmt_rdrjsi16 rd rj si16
+&fmt_rdrjui12 rd rj ui12
+&fmt_rdsi20 rd si20
+
+#
+# Formats
+#
+@fmt_rdrjrk .... ........ ..... ..... ..... ..... &fmt_rdrjrk %rd %rj %rk
+@fmt_rdrjsi12 .... ...... ............ ..... ..... &fmt_rdrjsi12 %rd %rj %si12
+@fmt_rdrjui12 .... ...... ............ ..... ..... &fmt_rdrjui12 %rd %rj %ui12
+@fmt_rdrjrksa2 .... ........ ... .. ..... ..... ..... &fmt_rdrjrksa2 %rd %rj %rk %sa2
+@fmt_rdrjsi16 .... .. ................ ..... ..... &fmt_rdrjsi16 %rd %rj %si16
+@fmt_rdsi20 .... ... .................... ..... &fmt_rdsi20 %rd %si20
+
+#
+# Fixed point arithmetic operation instruction
+#
+add_w 0000 00000001 00000 ..... ..... ..... @fmt_rdrjrk
+add_d 0000 00000001 00001 ..... ..... ..... @fmt_rdrjrk
+sub_w 0000 00000001 00010 ..... ..... ..... @fmt_rdrjrk
+sub_d 0000 00000001 00011 ..... ..... ..... @fmt_rdrjrk
+slt 0000 00000001 00100 ..... ..... ..... @fmt_rdrjrk
+sltu 0000 00000001 00101 ..... ..... ..... @fmt_rdrjrk
+slti 0000 001000 ............ ..... ..... @fmt_rdrjsi12
+sltui 0000 001001 ............ ..... ..... @fmt_rdrjsi12
+nor 0000 00000001 01000 ..... ..... ..... @fmt_rdrjrk
+and 0000 00000001 01001 ..... ..... ..... @fmt_rdrjrk
+or 0000 00000001 01010 ..... ..... ..... @fmt_rdrjrk
+xor 0000 00000001 01011 ..... ..... ..... @fmt_rdrjrk
+orn 0000 00000001 01100 ..... ..... ..... @fmt_rdrjrk
+andn 0000 00000001 01101 ..... ..... ..... @fmt_rdrjrk
+mul_w 0000 00000001 11000 ..... ..... ..... @fmt_rdrjrk
+mulh_w 0000 00000001 11001 ..... ..... ..... @fmt_rdrjrk
+mulh_wu 0000 00000001 11010 ..... ..... ..... @fmt_rdrjrk
+mul_d 0000 00000001 11011 ..... ..... ..... @fmt_rdrjrk
+mulh_d 0000 00000001 11100 ..... ..... ..... @fmt_rdrjrk
+mulh_du 0000 00000001 11101 ..... ..... ..... @fmt_rdrjrk
+mulw_d_w 0000 00000001 11110 ..... ..... ..... @fmt_rdrjrk
+mulw_d_wu 0000 00000001 11111 ..... ..... ..... @fmt_rdrjrk
+div_w 0000 00000010 00000 ..... ..... ..... @fmt_rdrjrk
+mod_w 0000 00000010 00001 ..... ..... ..... @fmt_rdrjrk
+div_wu 0000 00000010 00010 ..... ..... ..... @fmt_rdrjrk
+mod_wu 0000 00000010 00011 ..... ..... ..... @fmt_rdrjrk
+div_d 0000 00000010 00100 ..... ..... ..... @fmt_rdrjrk
+mod_d 0000 00000010 00101 ..... ..... ..... @fmt_rdrjrk
+div_du 0000 00000010 00110 ..... ..... ..... @fmt_rdrjrk
+mod_du 0000 00000010 00111 ..... ..... ..... @fmt_rdrjrk
+alsl_w 0000 00000000 010 .. ..... ..... ..... @fmt_rdrjrksa2
+alsl_wu 0000 00000000 011 .. ..... ..... ..... @fmt_rdrjrksa2
+alsl_d 0000 00000010 110 .. ..... ..... ..... @fmt_rdrjrksa2
+lu12i_w 0001 010 .................... ..... @fmt_rdsi20
+lu32i_d 0001 011 .................... ..... @fmt_rdsi20
+lu52i_d 0000 001100 ............ ..... ..... @fmt_rdrjsi12
+pcaddi 0001 100 .................... ..... @fmt_rdsi20
+pcalau12i 0001 101 .................... ..... @fmt_rdsi20
+pcaddu12i 0001 110 .................... ..... @fmt_rdsi20
+pcaddu18i 0001 111 .................... ..... @fmt_rdsi20
+addi_w 0000 001010 ............ ..... ..... @fmt_rdrjsi12
+addi_d 0000 001011 ............ ..... ..... @fmt_rdrjsi12
+addu16i_d 0001 00 ................ ..... ..... @fmt_rdrjsi16
+andi 0000 001101 ............ ..... ..... @fmt_rdrjui12
+ori 0000 001110 ............ ..... ..... @fmt_rdrjui12
+xori 0000 001111 ............ ..... ..... @fmt_rdrjui12
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index 048c895..d4e0bf3 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -57,6 +57,11 @@ static void loongarch_tr_init_disas_context(DisasContextBase *dcbase,
/* Bound the number of insns to execute to those left on the page. */
bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4;
ctx->base.max_insns = MIN(ctx->base.max_insns, bound);
+
+ ctx->ntemp = 0;
+ memset(ctx->temp, 0, sizeof(ctx->temp));
+
+ ctx->zero = tcg_constant_tl(0);
}
static void loongarch_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
@@ -70,6 +75,73 @@ static void loongarch_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
tcg_gen_insn_start(ctx->base.pc_next);
}
+/*
+ * Wrappers for getting reg values.
+ *
+ * The $zero register does not have cpu_gpr[0] allocated -- we supply the
+ * constant zero as a source, and an uninitialized sink as destination.
+ *
+ * Further, we may provide an extension for word operations.
+ */
+static TCGv temp_new(DisasContext *ctx)
+{
+ assert(ctx->ntemp < ARRAY_SIZE(ctx->temp));
+ return ctx->temp[ctx->ntemp++] = tcg_temp_new();
+}
+
+static TCGv gpr_src(DisasContext *ctx, int reg_num, DisasExtend src_ext)
+{
+ TCGv t;
+
+ if (reg_num == 0) {
+ return ctx->zero;
+ }
+
+ switch (src_ext) {
+ case EXT_NONE:
+ return cpu_gpr[reg_num];
+ case EXT_SIGN:
+ t = temp_new(ctx);
+ tcg_gen_ext32s_tl(t, cpu_gpr[reg_num]);
+ return t;
+ case EXT_ZERO:
+ t = temp_new(ctx);
+ tcg_gen_ext32u_tl(t, cpu_gpr[reg_num]);
+ return t;
+ }
+ g_assert_not_reached();
+}
+
+static TCGv gpr_dst(DisasContext *ctx, int reg_num, DisasExtend dst_ext)
+{
+ if (reg_num == 0 || dst_ext) {
+ return temp_new(ctx);
+ }
+ return cpu_gpr[reg_num];
+}
+
+static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
+{
+ if (reg_num != 0) {
+ switch (dst_ext) {
+ case EXT_NONE:
+ tcg_gen_mov_tl(cpu_gpr[reg_num], t);
+ break;
+ case EXT_SIGN:
+ tcg_gen_ext32s_tl(cpu_gpr[reg_num], t);
+ break;
+ case EXT_ZERO:
+ tcg_gen_ext32u_tl(cpu_gpr[reg_num], t);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ }
+}
+
+#include "decode-insns.c.inc"
+#include "insn_trans/trans_arith.c.inc"
+
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
CPULoongArchState *env = cs->env_ptr;
@@ -83,6 +155,12 @@ static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
generate_exception(ctx, EXCP_INE);
}
+ for (int i = ctx->ntemp - 1; i >= 0; --i) {
+ tcg_temp_free(ctx->temp[i]);
+ ctx->temp[i] = NULL;
+ }
+ ctx->ntemp = 0;
+
ctx->base.pc_next += 4;
}
diff --git a/target/loongarch/translate.h b/target/loongarch/translate.h
index 6cc7f1a..9cc1251 100644
--- a/target/loongarch/translate.h
+++ b/target/loongarch/translate.h
@@ -10,11 +10,30 @@
#include "exec/translator.h"
+#define TRANS(NAME, FUNC, ...) \
+ static bool trans_##NAME(DisasContext *ctx, arg_##NAME * a) \
+ { return FUNC(ctx, a, __VA_ARGS__); }
+
+/*
+ * If an operation is being performed on less than TARGET_LONG_BITS,
+ * it may require the inputs to be sign- or zero-extended; which will
+ * depend on the exact operation being performed.
+ */
+typedef enum {
+ EXT_NONE,
+ EXT_SIGN,
+ EXT_ZERO,
+} DisasExtend;
+
typedef struct DisasContext {
DisasContextBase base;
target_ulong page_start;
uint32_t opcode;
int mem_idx;
+ TCGv zero;
+ /* Space for 3 operands plus 1 extra for address computation. */
+ TCGv temp[4];
+ uint8_t ntemp;
} DisasContext;
void generate_exception(DisasContext *ctx, int excp);
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 05/26] target/loongarch: Add fixed point shift instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (3 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 06/26] target/loongarch: Add fixed point bit " Song Gao
` (20 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- SLL.W, SRL.W, SRA.W, ROTR.W
- SLLI.W, SRLI.W, SRAI.W, ROTRI.W
- SLL.D, SRL.D, SRA.D, ROTR.D
- SLLI.D, SRLI.D, SRAI.D, ROTRI.D
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/insn_trans/trans_shift.c.inc | 128 ++++++++++++++++++++++++++
target/loongarch/insns.decode | 26 ++++++
target/loongarch/translate.c | 1 +
3 files changed, 155 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_shift.c.inc
diff --git a/target/loongarch/insn_trans/trans_shift.c.inc b/target/loongarch/insn_trans/trans_shift.c.inc
new file mode 100644
index 0000000..1672768
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_shift.c.inc
@@ -0,0 +1,128 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_r2_ui5(DisasContext *ctx, arg_slli_w *a,
+ void(*func)(TCGv, TCGv, TCGv))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_SIGN);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_ZERO);
+ TCGv src2 = tcg_constant_tl(a->ui5);
+
+ func(dest, src1, src2);
+ gen_set_gpr(a->rd, dest, EXT_SIGN);
+
+ return true;
+}
+
+static bool gen_r2_ui6(DisasContext *ctx, arg_slli_d *a,
+ void(*func)(TCGv, TCGv, target_long))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ func(dest, src1, a->ui6);
+
+ return true;
+}
+
+static void gen_sll_w(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, src2, 0x1f);
+ tcg_gen_shl_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_srl_w(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, src2, 0x1f);
+ tcg_gen_shr_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_sra_w(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, src2, 0x1f);
+ tcg_gen_sar_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_sll_d(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, src2, 0x3f);
+ tcg_gen_shl_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_srl_d(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, src2, 0x3f);
+ tcg_gen_shr_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_sra_d(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, src2, 0x3f);
+ tcg_gen_sar_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static void gen_rotr_w(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv_i32 t1 = tcg_temp_new_i32();
+ TCGv_i32 t2 = tcg_temp_new_i32();
+ TCGv t0 = tcg_temp_new();
+
+ tcg_gen_andi_tl(t0, src2, 0x1f);
+
+ tcg_gen_trunc_tl_i32(t1, src1);
+ tcg_gen_trunc_tl_i32(t2, t0);
+
+ tcg_gen_rotr_i32(t1, t1, t2);
+ tcg_gen_ext_i32_tl(dest, t1);
+
+ tcg_temp_free_i32(t1);
+ tcg_temp_free_i32(t2);
+ tcg_temp_free(t0);
+}
+
+static void gen_rotr_d(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv t0 = tcg_temp_new();
+ tcg_gen_andi_tl(t0, src2, 0x3f);
+ tcg_gen_rotr_tl(dest, src1, t0);
+ tcg_temp_free(t0);
+}
+
+static bool trans_srai_w(DisasContext *ctx, arg_srai_w *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_ZERO);
+
+ tcg_gen_sextract_tl(dest, src1, a->ui5, 32 - a->ui5);
+ return true;
+}
+
+TRANS(sll_w, gen_r3, EXT_ZERO, EXT_NONE, EXT_SIGN, gen_sll_w)
+TRANS(srl_w, gen_r3, EXT_ZERO, EXT_NONE, EXT_SIGN, gen_srl_w)
+TRANS(sra_w, gen_r3, EXT_SIGN, EXT_NONE, EXT_SIGN, gen_sra_w)
+TRANS(sll_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_sll_d)
+TRANS(srl_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_srl_d)
+TRANS(sra_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_sra_d)
+TRANS(rotr_w, gen_r3, EXT_ZERO, EXT_NONE, EXT_SIGN, gen_rotr_w)
+TRANS(rotr_d, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_rotr_d)
+TRANS(slli_w, gen_r2_ui5, tcg_gen_shl_tl)
+TRANS(slli_d, gen_r2_ui6, tcg_gen_shli_tl)
+TRANS(srli_w, gen_r2_ui5, tcg_gen_shr_tl)
+TRANS(srli_d, gen_r2_ui6, tcg_gen_shri_tl)
+TRANS(srai_d, gen_r2_ui6, tcg_gen_sari_tl)
+TRANS(rotri_w, gen_r2_ui5, gen_rotr_w)
+TRANS(rotri_d, gen_r2_ui6, tcg_gen_rotri_tl)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 3e6a051..88e5f74 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -16,6 +16,8 @@
%ui12 10:12
%si16 10:s16
%si20 5:s20
+%ui5 10:5
+%ui6 10:6
#
# Argument sets
@@ -26,6 +28,8 @@
&fmt_rdrjsi16 rd rj si16
&fmt_rdrjui12 rd rj ui12
&fmt_rdsi20 rd si20
+&fmt_rdrjui5 rd rj ui5
+&fmt_rdrjui6 rd rj ui6
#
# Formats
@@ -36,6 +40,8 @@
@fmt_rdrjrksa2 .... ........ ... .. ..... ..... ..... &fmt_rdrjrksa2 %rd %rj %rk %sa2
@fmt_rdrjsi16 .... .. ................ ..... ..... &fmt_rdrjsi16 %rd %rj %si16
@fmt_rdsi20 .... ... .................... ..... &fmt_rdsi20 %rd %si20
+@fmt_rdrjui5 .... ........ ..... ..... ..... ..... &fmt_rdrjui5 %rd %rj %ui5
+@fmt_rdrjui6 .... ........ .... ...... ..... ..... &fmt_rdrjui6 %rd %rj %ui6
#
# Fixed point arithmetic operation instruction
@@ -86,3 +92,23 @@ addu16i_d 0001 00 ................ ..... ..... @fmt_rdrjsi16
andi 0000 001101 ............ ..... ..... @fmt_rdrjui12
ori 0000 001110 ............ ..... ..... @fmt_rdrjui12
xori 0000 001111 ............ ..... ..... @fmt_rdrjui12
+
+#
+# Fixed point shift operation instruction
+#
+sll_w 0000 00000001 01110 ..... ..... ..... @fmt_rdrjrk
+srl_w 0000 00000001 01111 ..... ..... ..... @fmt_rdrjrk
+sra_w 0000 00000001 10000 ..... ..... ..... @fmt_rdrjrk
+sll_d 0000 00000001 10001 ..... ..... ..... @fmt_rdrjrk
+srl_d 0000 00000001 10010 ..... ..... ..... @fmt_rdrjrk
+sra_d 0000 00000001 10011 ..... ..... ..... @fmt_rdrjrk
+rotr_w 0000 00000001 10110 ..... ..... ..... @fmt_rdrjrk
+rotr_d 0000 00000001 10111 ..... ..... ..... @fmt_rdrjrk
+slli_w 0000 00000100 00001 ..... ..... ..... @fmt_rdrjui5
+slli_d 0000 00000100 0001 ...... ..... ..... @fmt_rdrjui6
+srli_w 0000 00000100 01001 ..... ..... ..... @fmt_rdrjui5
+srli_d 0000 00000100 0101 ...... ..... ..... @fmt_rdrjui6
+srai_w 0000 00000100 10001 ..... ..... ..... @fmt_rdrjui5
+srai_d 0000 00000100 1001 ...... ..... ..... @fmt_rdrjui6
+rotri_w 0000 00000100 11001 ..... ..... ..... @fmt_rdrjui5
+rotri_d 0000 00000100 1101 ...... ..... ..... @fmt_rdrjui6
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index d4e0bf3..910aad3 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -141,6 +141,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "decode-insns.c.inc"
#include "insn_trans/trans_arith.c.inc"
+#include "insn_trans/trans_shift.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 06/26] target/loongarch: Add fixed point bit instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (4 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 05/26] target/loongarch: Add fixed point shift " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 07/26] target/loongarch: Add fixed point load/store " Song Gao
` (19 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- EXT.W.{B/H}
- CL{O/Z}.{W/D}, CT{O/Z}.{W/D}
- BYTEPICK.{W/D}
- REVB.{2H/4H/2W/D}
- REVH.{2W/D}
- BITREV.{4B/8B}, BITREV.{W/D}
- BSTRINS.{W/D}, BSTRPICK.{W/D}
- MASKEQZ, MASKNEZ
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/helper.h | 4 +
target/loongarch/insn_trans/trans_bit.c.inc | 252 ++++++++++++++++++++++++++++
target/loongarch/insns.decode | 45 +++++
target/loongarch/op_helper.c | 22 +++
target/loongarch/translate.c | 1 +
5 files changed, 324 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_bit.c.inc
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
index eb771c0..04e0245 100644
--- a/target/loongarch/helper.h
+++ b/target/loongarch/helper.h
@@ -4,3 +4,7 @@
*/
DEF_HELPER_2(raise_exception, noreturn, env, i32)
+
+DEF_HELPER_FLAGS_1(bitrev_w, TCG_CALL_NO_RWG_SE, tl, tl)
+DEF_HELPER_FLAGS_1(bitrev_d, TCG_CALL_NO_RWG_SE, tl, tl)
+DEF_HELPER_FLAGS_1(bitswap, TCG_CALL_NO_RWG_SE, tl, tl)
diff --git a/target/loongarch/insn_trans/trans_bit.c.inc b/target/loongarch/insn_trans/trans_bit.c.inc
new file mode 100644
index 0000000..7dd5d8e
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_bit.c.inc
@@ -0,0 +1,252 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_r2(DisasContext *ctx, arg_fmt_rdrj *a,
+ DisasExtend src_ext, DisasExtend dst_ext,
+ void (*func)(TCGv, TCGv))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, dst_ext);
+ TCGv src1 = gpr_src(ctx, a->rj, src_ext);
+
+ func(dest, src1);
+
+ if (dst_ext) {
+ gen_set_gpr(a->rd, dest, dst_ext);
+ }
+ return true;
+}
+
+static bool trans_bytepick_w(DisasContext *ctx, arg_bytepick_w *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+ tcg_gen_concat_tl_i64(dest, src1, src2);
+ tcg_gen_sextract_i64(dest, dest, (32 - (a->sa2) * 8), 32);
+
+ return true;
+}
+
+static bool trans_bytepick_d(DisasContext *ctx, arg_bytepick_d *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+ tcg_gen_extract2_i64(dest, src1, src2, (64 - (a->sa3) * 8));
+ return true;
+}
+
+static bool trans_bstrins_w(DisasContext *ctx, arg_bstrins_w *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ if (a->lsbw > a->msbw) {
+ return false;
+ }
+
+ tcg_gen_deposit_tl(dest, dest, src1, a->lsbw, a->msbw - a->lsbw + 1);
+ tcg_gen_ext32s_tl(dest, dest);
+
+ return true;
+}
+
+static bool trans_bstrins_d(DisasContext *ctx, arg_bstrins_d *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ if (a->lsbd > a->msbd) {
+ return false;
+ }
+
+ tcg_gen_deposit_tl(dest, dest, src1, a->lsbd, a->msbd - a->lsbd + 1);
+ return true;
+}
+
+static bool trans_bstrpick_w(DisasContext *ctx, arg_bstrpick_w *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ if (a->lsbw > a->msbw) {
+ return false;
+ }
+
+ tcg_gen_extract_tl(dest, src1, a->lsbw, a->msbw - a->lsbw + 1);
+ tcg_gen_ext32s_tl(dest, dest);
+ return true;
+}
+
+static bool trans_bstrpick_d(DisasContext *ctx, arg_bstrpick_d *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ if (a->lsbd > a->msbd) {
+ return false;
+ }
+
+ tcg_gen_extract_tl(dest, src1, a->lsbd, a->msbd - a->lsbd + 1);
+ return true;
+}
+
+static void gen_clz_w(TCGv dest, TCGv src1)
+{
+ tcg_gen_clzi_tl(dest, src1, TARGET_LONG_BITS);
+ tcg_gen_subi_tl(dest, dest, TARGET_LONG_BITS - 32);
+}
+
+static void gen_clo_w(TCGv dest, TCGv src1)
+{
+ tcg_gen_not_tl(dest, src1);
+ tcg_gen_ext32u_tl(dest, dest);
+ gen_clz_w(dest, dest);
+}
+
+static void gen_ctz_w(TCGv dest, TCGv src1)
+{
+ tcg_gen_ori_tl(dest, src1, (target_ulong)MAKE_64BIT_MASK(32, 32));
+ tcg_gen_ctzi_tl(dest, dest, 32);
+}
+
+static void gen_cto_w(TCGv dest, TCGv src1)
+{
+ tcg_gen_not_tl(dest, src1);
+ tcg_gen_ext32u_tl(dest, dest);
+ gen_ctz_w(dest, dest);
+}
+
+static void gen_clz_d(TCGv dest, TCGv src1)
+{
+ tcg_gen_clzi_i64(dest, src1, TARGET_LONG_BITS);
+}
+
+static void gen_clo_d(TCGv dest, TCGv src1)
+{
+ tcg_gen_not_tl(dest, src1);
+ gen_clz_d(dest, dest);
+}
+
+static void gen_ctz_d(TCGv dest, TCGv src1)
+{
+ tcg_gen_ctzi_tl(dest, src1, TARGET_LONG_BITS);
+}
+
+static void gen_cto_d(TCGv dest, TCGv src1)
+{
+ tcg_gen_not_tl(dest, src1);
+ gen_ctz_d(dest, dest);
+}
+
+static void gen_revb_2w(TCGv dest, TCGv src1)
+{
+ tcg_gen_bswap64_i64(dest, src1);
+ tcg_gen_rotri_i64(dest, dest, 32);
+}
+
+static void gen_revb_2h(TCGv dest, TCGv src1)
+{
+ TCGv mask = tcg_constant_tl(0x00FF00FF);
+ TCGv t0 = tcg_temp_new();
+ TCGv t1 = tcg_temp_new();
+
+ tcg_gen_shri_tl(t0, src1, 8);
+ tcg_gen_and_tl(t0, t0, mask);
+ tcg_gen_and_tl(t1, src1, mask);
+ tcg_gen_shli_tl(t1, t1, 8);
+ tcg_gen_or_tl(dest, t0, t1);
+
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static void gen_revb_4h(TCGv dest, TCGv src1)
+{
+ TCGv mask = tcg_constant_tl(0x00FF00FF00FF00FFULL);
+ TCGv t0 = tcg_temp_new();
+ TCGv t1 = tcg_temp_new();
+
+ tcg_gen_shri_tl(t0, src1, 8);
+ tcg_gen_and_tl(t0, t0, mask);
+ tcg_gen_and_tl(t1, src1, mask);
+ tcg_gen_shli_tl(t1, t1, 8);
+ tcg_gen_or_tl(dest, t0, t1);
+
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static void gen_revh_2w(TCGv dest, TCGv src1)
+{
+ TCGv_i64 t0 = tcg_temp_new_i64();
+ TCGv_i64 t1 = tcg_temp_new_i64();
+ TCGv_i64 mask = tcg_constant_i64(0x0000ffff0000ffffull);
+
+ tcg_gen_shri_i64(t0, src1, 16);
+ tcg_gen_and_i64(t1, src1, mask);
+ tcg_gen_and_i64(t0, t0, mask);
+ tcg_gen_shli_i64(t1, t1, 16);
+ tcg_gen_or_i64(dest, t1, t0);
+
+ tcg_temp_free_i64(t0);
+ tcg_temp_free_i64(t1);
+}
+
+static void gen_revh_d(TCGv dest, TCGv src1)
+{
+ TCGv t0 = tcg_temp_new();
+ TCGv t1 = tcg_temp_new();
+ TCGv mask = tcg_constant_tl(0x0000FFFF0000FFFFULL);
+
+ tcg_gen_shri_tl(t1, src1, 16);
+ tcg_gen_and_tl(t1, t1, mask);
+ tcg_gen_and_tl(t0, src1, mask);
+ tcg_gen_shli_tl(t0, t0, 16);
+ tcg_gen_or_tl(t0, t0, t1);
+ tcg_gen_rotri_tl(dest, t0, 32);
+
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static void gen_maskeqz(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv zero = tcg_constant_tl(0);
+
+ tcg_gen_movcond_tl(TCG_COND_EQ, dest, src2, zero, zero, src1);
+}
+
+static void gen_masknez(TCGv dest, TCGv src1, TCGv src2)
+{
+ TCGv zero = tcg_constant_tl(0);
+
+ tcg_gen_movcond_tl(TCG_COND_NE, dest, src2, zero, zero, src1);
+}
+
+TRANS(ext_w_h, gen_r2, EXT_NONE, EXT_NONE, tcg_gen_ext16s_tl)
+TRANS(ext_w_b, gen_r2, EXT_NONE, EXT_NONE, tcg_gen_ext8s_tl)
+TRANS(clo_w, gen_r2, EXT_NONE, EXT_NONE, gen_clo_w)
+TRANS(clz_w, gen_r2, EXT_ZERO, EXT_NONE, gen_clz_w)
+TRANS(cto_w, gen_r2, EXT_NONE, EXT_NONE, gen_cto_w)
+TRANS(ctz_w, gen_r2, EXT_NONE, EXT_NONE, gen_ctz_w)
+TRANS(clo_d, gen_r2, EXT_NONE, EXT_NONE, gen_clo_d)
+TRANS(clz_d, gen_r2, EXT_NONE, EXT_NONE, gen_clz_d)
+TRANS(cto_d, gen_r2, EXT_NONE, EXT_NONE, gen_cto_d)
+TRANS(ctz_d, gen_r2, EXT_NONE, EXT_NONE, gen_ctz_d)
+TRANS(revb_2h, gen_r2, EXT_NONE, EXT_SIGN, gen_revb_2h)
+TRANS(revb_4h, gen_r2, EXT_NONE, EXT_NONE, gen_revb_4h)
+TRANS(revb_2w, gen_r2, EXT_NONE, EXT_NONE, gen_revb_2w)
+TRANS(revb_d, gen_r2, EXT_NONE, EXT_NONE, tcg_gen_bswap64_i64)
+TRANS(revh_2w, gen_r2, EXT_NONE, EXT_NONE, gen_revh_2w)
+TRANS(revh_d, gen_r2, EXT_NONE, EXT_NONE, gen_revh_d)
+TRANS(bitrev_4b, gen_r2, EXT_ZERO, EXT_SIGN, gen_helper_bitswap)
+TRANS(bitrev_8b, gen_r2, EXT_NONE, EXT_NONE, gen_helper_bitswap)
+TRANS(bitrev_w, gen_r2, EXT_NONE, EXT_SIGN, gen_helper_bitrev_w)
+TRANS(bitrev_d, gen_r2, EXT_NONE, EXT_NONE, gen_helper_bitrev_d)
+TRANS(maskeqz, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_maskeqz)
+TRANS(masknez, gen_r3, EXT_NONE, EXT_NONE, EXT_NONE, gen_masknez)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 88e5f74..c89a43e 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -12,12 +12,17 @@
%rj 5:5
%rk 10:5
%sa2 15:2
+%sa3 15:3
%si12 10:s12
%ui12 10:12
%si16 10:s16
%si20 5:s20
%ui5 10:5
%ui6 10:6
+%msbw 16:5
+%lsbw 10:5
+%msbd 16:6
+%lsbd 10:6
#
# Argument sets
@@ -30,6 +35,10 @@
&fmt_rdsi20 rd si20
&fmt_rdrjui5 rd rj ui5
&fmt_rdrjui6 rd rj ui6
+&fmt_rdrj rd rj
+&fmt_rdrjrksa3 rd rj rk sa3
+&fmt_rdrjmsbwlsbw rd rj msbw lsbw
+&fmt_rdrjmsbdlsbd rd rj msbd lsbd
#
# Formats
@@ -42,6 +51,10 @@
@fmt_rdsi20 .... ... .................... ..... &fmt_rdsi20 %rd %si20
@fmt_rdrjui5 .... ........ ..... ..... ..... ..... &fmt_rdrjui5 %rd %rj %ui5
@fmt_rdrjui6 .... ........ .... ...... ..... ..... &fmt_rdrjui6 %rd %rj %ui6
+@fmt_rdrj .... ........ ..... ..... ..... ..... &fmt_rdrj %rd %rj
+@fmt_rdrjmsbwlsbw .... ....... ..... . ..... ..... ..... &fmt_rdrjmsbwlsbw %rd %rj %msbw %lsbw
+@fmt_rdrjmsbdlsbd .... ...... ...... ...... ..... ..... &fmt_rdrjmsbdlsbd %rd %rj %msbd %lsbd
+@fmt_rdrjrksa3 .... ........ .. ... ..... ..... ..... &fmt_rdrjrksa3 %rd %rj %rk %sa3
#
# Fixed point arithmetic operation instruction
@@ -112,3 +125,35 @@ srai_w 0000 00000100 10001 ..... ..... ..... @fmt_rdrjui5
srai_d 0000 00000100 1001 ...... ..... ..... @fmt_rdrjui6
rotri_w 0000 00000100 11001 ..... ..... ..... @fmt_rdrjui5
rotri_d 0000 00000100 1101 ...... ..... ..... @fmt_rdrjui6
+
+#
+# Fixed point bit operation instruction
+#
+ext_w_h 0000 00000000 00000 10110 ..... ..... @fmt_rdrj
+ext_w_b 0000 00000000 00000 10111 ..... ..... @fmt_rdrj
+clo_w 0000 00000000 00000 00100 ..... ..... @fmt_rdrj
+clz_w 0000 00000000 00000 00101 ..... ..... @fmt_rdrj
+cto_w 0000 00000000 00000 00110 ..... ..... @fmt_rdrj
+ctz_w 0000 00000000 00000 00111 ..... ..... @fmt_rdrj
+clo_d 0000 00000000 00000 01000 ..... ..... @fmt_rdrj
+clz_d 0000 00000000 00000 01001 ..... ..... @fmt_rdrj
+cto_d 0000 00000000 00000 01010 ..... ..... @fmt_rdrj
+ctz_d 0000 00000000 00000 01011 ..... ..... @fmt_rdrj
+revb_2h 0000 00000000 00000 01100 ..... ..... @fmt_rdrj
+revb_4h 0000 00000000 00000 01101 ..... ..... @fmt_rdrj
+revb_2w 0000 00000000 00000 01110 ..... ..... @fmt_rdrj
+revb_d 0000 00000000 00000 01111 ..... ..... @fmt_rdrj
+revh_2w 0000 00000000 00000 10000 ..... ..... @fmt_rdrj
+revh_d 0000 00000000 00000 10001 ..... ..... @fmt_rdrj
+bitrev_4b 0000 00000000 00000 10010 ..... ..... @fmt_rdrj
+bitrev_8b 0000 00000000 00000 10011 ..... ..... @fmt_rdrj
+bitrev_w 0000 00000000 00000 10100 ..... ..... @fmt_rdrj
+bitrev_d 0000 00000000 00000 10101 ..... ..... @fmt_rdrj
+bytepick_w 0000 00000000 100 .. ..... ..... ..... @fmt_rdrjrksa2
+bytepick_d 0000 00000000 11 ... ..... ..... ..... @fmt_rdrjrksa3
+maskeqz 0000 00000001 00110 ..... ..... ..... @fmt_rdrjrk
+masknez 0000 00000001 00111 ..... ..... ..... @fmt_rdrjrk
+bstrins_w 0000 0000011 ..... 0 ..... ..... ..... @fmt_rdrjmsbwlsbw
+bstrpick_w 0000 0000011 ..... 1 ..... ..... ..... @fmt_rdrjmsbwlsbw
+bstrins_d 0000 000010 ...... ...... ..... ..... @fmt_rdrjmsbdlsbd
+bstrpick_d 0000 000011 ...... ...... ..... ..... @fmt_rdrjmsbdlsbd
diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c
index 9038109..1fc9d81 100644
--- a/target/loongarch/op_helper.c
+++ b/target/loongarch/op_helper.c
@@ -19,3 +19,25 @@ void helper_raise_exception(CPULoongArchState *env, uint32_t exception)
{
do_raise_exception(env, exception, GETPC());
}
+
+
+target_ulong helper_bitrev_w(target_ulong rj)
+{
+ return (int32_t)revbit32(rj);
+}
+
+target_ulong helper_bitrev_d(target_ulong rj)
+{
+ return revbit64(rj);
+}
+
+target_ulong helper_bitswap(target_ulong v)
+{
+ v = ((v >> 1) & (target_ulong)0x5555555555555555ULL) |
+ ((v & (target_ulong)0x5555555555555555ULL) << 1);
+ v = ((v >> 2) & (target_ulong)0x3333333333333333ULL) |
+ ((v & (target_ulong)0x3333333333333333ULL) << 2);
+ v = ((v >> 4) & (target_ulong)0x0F0F0F0F0F0F0F0FULL) |
+ ((v & (target_ulong)0x0F0F0F0F0F0F0F0FULL) << 4);
+ return v;
+}
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index 910aad3..dd349e7 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -142,6 +142,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "decode-insns.c.inc"
#include "insn_trans/trans_arith.c.inc"
#include "insn_trans/trans_shift.c.inc"
+#include "insn_trans/trans_bit.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 07/26] target/loongarch: Add fixed point load/store instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (5 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 06/26] target/loongarch: Add fixed point bit " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 08/26] target/loongarch: Add fixed point atomic " Song Gao
` (18 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- LD.{B[U]/H[U]/W[U]/D}, ST.{B/H/W/D}
- LDX.{B[U]/H[U]/W[U]/D}, STX.{B/H/W/D}
- LDPTR.{W/D}, STPTR.{W/D}
- PRELD
- LD{GT/LE}.{B/H/W/D}, ST{GT/LE}.{B/H/W/D}
- DBAR, IBAR
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/helper.h | 3 +
target/loongarch/insn_trans/trans_memory.c.inc | 232 +++++++++++++++++++++++++
target/loongarch/insns.decode | 58 +++++++
target/loongarch/op_helper.c | 15 ++
target/loongarch/translate.c | 30 ++++
5 files changed, 338 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_memory.c.inc
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
index 04e0245..2fe4e63 100644
--- a/target/loongarch/helper.h
+++ b/target/loongarch/helper.h
@@ -8,3 +8,6 @@ DEF_HELPER_2(raise_exception, noreturn, env, i32)
DEF_HELPER_FLAGS_1(bitrev_w, TCG_CALL_NO_RWG_SE, tl, tl)
DEF_HELPER_FLAGS_1(bitrev_d, TCG_CALL_NO_RWG_SE, tl, tl)
DEF_HELPER_FLAGS_1(bitswap, TCG_CALL_NO_RWG_SE, tl, tl)
+
+DEF_HELPER_3(asrtle_d, void, env, tl, tl)
+DEF_HELPER_3(asrtgt_d, void, env, tl, tl)
diff --git a/target/loongarch/insn_trans/trans_memory.c.inc b/target/loongarch/insn_trans/trans_memory.c.inc
new file mode 100644
index 0000000..579dba6
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_memory.c.inc
@@ -0,0 +1,232 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_load(DisasContext *ctx, arg_fmt_rdrjsi12 *a, MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv temp = NULL;
+
+ if (a->si12) {
+ temp = tcg_temp_new();
+ tcg_gen_addi_tl(temp, addr, a->si12);
+ addr = temp;
+ }
+
+ tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+
+ if (temp) {
+ tcg_temp_free(temp);
+ }
+ return true;
+}
+
+static bool gen_store(DisasContext *ctx, arg_fmt_rdrjsi12 *a, MemOp mop)
+{
+ TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv temp = NULL;
+
+ if (a->si12) {
+ temp = tcg_temp_new();
+ tcg_gen_addi_tl(temp, addr, a->si12);
+ addr = temp;
+ }
+
+ tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+
+ if (temp) {
+ tcg_temp_free(temp);
+ }
+ return true;
+}
+
+static bool gen_loadx(DisasContext *ctx, arg_fmt_rdrjrk *a, MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_storex(DisasContext *ctx, arg_fmt_rdrjrk *a, MemOp mop)
+{
+ TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_load_gt(DisasContext *ctx, arg_fmt_rdrjrk *a, MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtgt_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_load_le(DisasContext *ctx, arg_fmt_rdrjrk *a, MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtle_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_store_gt(DisasContext *ctx, arg_fmt_rdrjrk *a, MemOp mop)
+{
+ TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtgt_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_store_le(DisasContext *ctx, arg_fmt_rdrjrk *a, MemOp mop)
+{
+ TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtle_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool trans_preld(DisasContext *ctx, arg_preld *a)
+{
+ return true;
+}
+
+static bool trans_dbar(DisasContext *ctx, arg_dbar * a)
+{
+ gen_loongarch_sync(a->whint);
+ return true;
+}
+
+static bool trans_ibar(DisasContext *ctx, arg_ibar *a)
+{
+ ctx->base.is_jmp = DISAS_STOP;
+ return true;
+}
+
+static bool gen_ldptr(DisasContext *ctx, arg_fmt_rdrjsi14 *a, MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv temp = NULL;
+
+ if (a->si14) {
+ temp = tcg_temp_new();
+ tcg_gen_addi_tl(temp, addr, a->si14 << 2);
+ addr = temp;
+ }
+
+ tcg_gen_qemu_ld_tl(dest, addr, ctx->mem_idx, mop);
+
+ if (temp) {
+ tcg_temp_free(temp);
+ }
+ return true;
+}
+
+static bool gen_stptr(DisasContext *ctx, arg_fmt_rdrjsi14 *a, MemOp mop)
+{
+ TCGv data = gpr_src(ctx, a->rd, EXT_NONE);
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv temp = NULL;
+
+ if (a->si14) {
+ temp = tcg_temp_new();
+ tcg_gen_addi_tl(temp, addr, a->si14 << 2);
+ addr = temp;
+ }
+
+ tcg_gen_qemu_st_tl(data, addr, ctx->mem_idx, mop);
+
+ if (temp) {
+ tcg_temp_free(temp);
+ }
+ return true;
+}
+
+TRANS(ld_b, gen_load, MO_SB)
+TRANS(ld_h, gen_load, MO_TESW)
+TRANS(ld_w, gen_load, MO_TESL)
+TRANS(ld_d, gen_load, MO_TEQ)
+TRANS(st_b, gen_store, MO_SB)
+TRANS(st_h, gen_store, MO_TESW)
+TRANS(st_w, gen_store, MO_TESL)
+TRANS(st_d, gen_store, MO_TEQ)
+TRANS(ld_bu, gen_load, MO_UB)
+TRANS(ld_hu, gen_load, MO_TEUW)
+TRANS(ld_wu, gen_load, MO_TEUL)
+TRANS(ldx_b, gen_loadx, MO_SB)
+TRANS(ldx_h, gen_loadx, MO_TESW)
+TRANS(ldx_w, gen_loadx, MO_TESL)
+TRANS(ldx_d, gen_loadx, MO_TEQ)
+TRANS(stx_b, gen_storex, MO_SB)
+TRANS(stx_h, gen_storex, MO_TESW)
+TRANS(stx_w, gen_storex, MO_TESL)
+TRANS(stx_d, gen_storex, MO_TEQ)
+TRANS(ldx_bu, gen_loadx, MO_UB)
+TRANS(ldx_hu, gen_loadx, MO_TEUW)
+TRANS(ldx_wu, gen_loadx, MO_TEUL)
+TRANS(ldptr_w, gen_ldptr, MO_TESL)
+TRANS(stptr_w, gen_stptr, MO_TESL)
+TRANS(ldptr_d, gen_ldptr, MO_TEQ)
+TRANS(stptr_d, gen_stptr, MO_TEQ)
+TRANS(ldgt_b, gen_load_gt, MO_SB)
+TRANS(ldgt_h, gen_load_gt, MO_TESW)
+TRANS(ldgt_w, gen_load_gt, MO_TESL)
+TRANS(ldgt_d, gen_load_gt, MO_TEQ)
+TRANS(ldle_b, gen_load_le, MO_SB)
+TRANS(ldle_h, gen_load_le, MO_TESW)
+TRANS(ldle_w, gen_load_le, MO_TESL)
+TRANS(ldle_d, gen_load_le, MO_TEQ)
+TRANS(stgt_b, gen_store_gt, MO_SB)
+TRANS(stgt_h, gen_store_gt, MO_TESW)
+TRANS(stgt_w, gen_store_gt, MO_TESL)
+TRANS(stgt_d, gen_store_gt, MO_TEQ)
+TRANS(stle_b, gen_store_le, MO_SB)
+TRANS(stle_h, gen_store_le, MO_TESW)
+TRANS(stle_w, gen_store_le, MO_TESL)
+TRANS(stle_d, gen_store_le, MO_TEQ)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index c89a43e..9b808cc 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -23,6 +23,9 @@
%lsbw 10:5
%msbd 16:6
%lsbd 10:6
+%si14 10:s14
+%hint 0:5
+%whint 0:15
#
# Argument sets
@@ -39,6 +42,9 @@
&fmt_rdrjrksa3 rd rj rk sa3
&fmt_rdrjmsbwlsbw rd rj msbw lsbw
&fmt_rdrjmsbdlsbd rd rj msbd lsbd
+&fmt_rdrjsi14 rd rj si14
+&fmt_hintrjsi12 hint rj si12
+&fmt_whint whint
#
# Formats
@@ -55,6 +61,9 @@
@fmt_rdrjmsbwlsbw .... ....... ..... . ..... ..... ..... &fmt_rdrjmsbwlsbw %rd %rj %msbw %lsbw
@fmt_rdrjmsbdlsbd .... ...... ...... ...... ..... ..... &fmt_rdrjmsbdlsbd %rd %rj %msbd %lsbd
@fmt_rdrjrksa3 .... ........ .. ... ..... ..... ..... &fmt_rdrjrksa3 %rd %rj %rk %sa3
+@fmt_hintrjsi12 .... ...... ............ ..... ..... &fmt_hintrjsi12 %hint %rj %si12
+@fmt_whint .... ........ ..... ............... &fmt_whint %whint
+@fmt_rdrjsi14 .... .... .............. ..... ..... &fmt_rdrjsi14 %rd %rj %si14
#
# Fixed point arithmetic operation instruction
@@ -157,3 +166,52 @@ bstrins_w 0000 0000011 ..... 0 ..... ..... ..... @fmt_rdrjmsbwlsbw
bstrpick_w 0000 0000011 ..... 1 ..... ..... ..... @fmt_rdrjmsbwlsbw
bstrins_d 0000 000010 ...... ...... ..... ..... @fmt_rdrjmsbdlsbd
bstrpick_d 0000 000011 ...... ...... ..... ..... @fmt_rdrjmsbdlsbd
+
+#
+# Fixed point load/store instruction
+#
+ld_b 0010 100000 ............ ..... ..... @fmt_rdrjsi12
+ld_h 0010 100001 ............ ..... ..... @fmt_rdrjsi12
+ld_w 0010 100010 ............ ..... ..... @fmt_rdrjsi12
+ld_d 0010 100011 ............ ..... ..... @fmt_rdrjsi12
+st_b 0010 100100 ............ ..... ..... @fmt_rdrjsi12
+st_h 0010 100101 ............ ..... ..... @fmt_rdrjsi12
+st_w 0010 100110 ............ ..... ..... @fmt_rdrjsi12
+st_d 0010 100111 ............ ..... ..... @fmt_rdrjsi12
+ld_bu 0010 101000 ............ ..... ..... @fmt_rdrjsi12
+ld_hu 0010 101001 ............ ..... ..... @fmt_rdrjsi12
+ld_wu 0010 101010 ............ ..... ..... @fmt_rdrjsi12
+ldx_b 0011 10000000 00000 ..... ..... ..... @fmt_rdrjrk
+ldx_h 0011 10000000 01000 ..... ..... ..... @fmt_rdrjrk
+ldx_w 0011 10000000 10000 ..... ..... ..... @fmt_rdrjrk
+ldx_d 0011 10000000 11000 ..... ..... ..... @fmt_rdrjrk
+stx_b 0011 10000001 00000 ..... ..... ..... @fmt_rdrjrk
+stx_h 0011 10000001 01000 ..... ..... ..... @fmt_rdrjrk
+stx_w 0011 10000001 10000 ..... ..... ..... @fmt_rdrjrk
+stx_d 0011 10000001 11000 ..... ..... ..... @fmt_rdrjrk
+ldx_bu 0011 10000010 00000 ..... ..... ..... @fmt_rdrjrk
+ldx_hu 0011 10000010 01000 ..... ..... ..... @fmt_rdrjrk
+ldx_wu 0011 10000010 10000 ..... ..... ..... @fmt_rdrjrk
+preld 0010 101011 ............ ..... ..... @fmt_hintrjsi12
+dbar 0011 10000111 00100 ............... @fmt_whint
+ibar 0011 10000111 00101 ............... @fmt_whint
+ldptr_w 0010 0100 .............. ..... ..... @fmt_rdrjsi14
+stptr_w 0010 0101 .............. ..... ..... @fmt_rdrjsi14
+ldptr_d 0010 0110 .............. ..... ..... @fmt_rdrjsi14
+stptr_d 0010 0111 .............. ..... ..... @fmt_rdrjsi14
+ldgt_b 0011 10000111 10000 ..... ..... ..... @fmt_rdrjrk
+ldgt_h 0011 10000111 10001 ..... ..... ..... @fmt_rdrjrk
+ldgt_w 0011 10000111 10010 ..... ..... ..... @fmt_rdrjrk
+ldgt_d 0011 10000111 10011 ..... ..... ..... @fmt_rdrjrk
+ldle_b 0011 10000111 10100 ..... ..... ..... @fmt_rdrjrk
+ldle_h 0011 10000111 10101 ..... ..... ..... @fmt_rdrjrk
+ldle_w 0011 10000111 10110 ..... ..... ..... @fmt_rdrjrk
+ldle_d 0011 10000111 10111 ..... ..... ..... @fmt_rdrjrk
+stgt_b 0011 10000111 11000 ..... ..... ..... @fmt_rdrjrk
+stgt_h 0011 10000111 11001 ..... ..... ..... @fmt_rdrjrk
+stgt_w 0011 10000111 11010 ..... ..... ..... @fmt_rdrjrk
+stgt_d 0011 10000111 11011 ..... ..... ..... @fmt_rdrjrk
+stle_b 0011 10000111 11100 ..... ..... ..... @fmt_rdrjrk
+stle_h 0011 10000111 11101 ..... ..... ..... @fmt_rdrjrk
+stle_w 0011 10000111 11110 ..... ..... ..... @fmt_rdrjrk
+stle_d 0011 10000111 11111 ..... ..... ..... @fmt_rdrjrk
diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c
index 1fc9d81..53ee9ff 100644
--- a/target/loongarch/op_helper.c
+++ b/target/loongarch/op_helper.c
@@ -41,3 +41,18 @@ target_ulong helper_bitswap(target_ulong v)
((v & (target_ulong)0x0F0F0F0F0F0F0F0FULL) << 4);
return v;
}
+
+/* loongarch assert op */
+void helper_asrtle_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
+{
+ if (rj > rk) {
+ do_raise_exception(env, EXCP_ADE, GETPC());
+ }
+}
+
+void helper_asrtgt_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
+{
+ if (rj <= rk) {
+ do_raise_exception(env, EXCP_ADE, GETPC());
+ }
+}
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index dd349e7..f0e5b62 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -64,6 +64,35 @@ static void loongarch_tr_init_disas_context(DisasContextBase *dcbase,
ctx->zero = tcg_constant_tl(0);
}
+/* loongarch sync */
+static void gen_loongarch_sync(int stype)
+{
+ TCGBar tcg_mo = TCG_BAR_SC;
+
+ switch (stype) {
+ case 0x4: /* SYNC_WMB */
+ tcg_mo |= TCG_MO_ST_ST;
+ break;
+ case 0x10: /* SYNC_MB */
+ tcg_mo |= TCG_MO_ALL;
+ break;
+ case 0x11: /* SYNC_ACQUIRE */
+ tcg_mo |= TCG_MO_LD_LD | TCG_MO_LD_ST;
+ break;
+ case 0x12: /* SYNC_RELEASE */
+ tcg_mo |= TCG_MO_ST_ST | TCG_MO_LD_ST;
+ break;
+ case 0x13: /* SYNC_RMB */
+ tcg_mo |= TCG_MO_LD_LD;
+ break;
+ default:
+ tcg_mo |= TCG_MO_ALL;
+ break;
+ }
+
+ tcg_gen_mb(tcg_mo);
+}
+
static void loongarch_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
{
}
@@ -143,6 +172,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_arith.c.inc"
#include "insn_trans/trans_shift.c.inc"
#include "insn_trans/trans_bit.c.inc"
+#include "insn_trans/trans_memory.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 08/26] target/loongarch: Add fixed point atomic instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (6 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 07/26] target/loongarch: Add fixed point load/store " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 09/26] target/loongarch: Add fixed point extra " Song Gao
` (17 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- LL.{W/D}, SC.{W/D}
- AM{SWAP/ADD/AND/OR/XOR/MAX/MIN}[_DB].{W/D}
- AM{MAX/MIN}[_DB].{WU/DU}
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/insn_trans/trans_atomic.c.inc | 130 +++++++++++++++++++++++++
target/loongarch/insns.decode | 44 +++++++++
target/loongarch/translate.c | 1 +
3 files changed, 175 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_atomic.c.inc
diff --git a/target/loongarch/insn_trans/trans_atomic.c.inc b/target/loongarch/insn_trans/trans_atomic.c.inc
new file mode 100644
index 0000000..40ad806
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_atomic.c.inc
@@ -0,0 +1,130 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_ll(DisasContext *ctx, arg_fmt_rdrjsi14 *a,
+ void (*func)(TCGv, TCGv, int))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv t0 = tcg_temp_new();
+
+ tcg_gen_addi_tl(t0, src1, a->si14 << 2);
+ func(dest, t0, ctx->mem_idx);
+ tcg_gen_st_tl(t0, cpu_env, offsetof(CPULoongArchState, lladdr));
+ tcg_gen_st_tl(dest, cpu_env, offsetof(CPULoongArchState, llval));
+ tcg_temp_free(t0);
+ return true;
+}
+
+static bool gen_sc(DisasContext *ctx, arg_fmt_rdrjsi14 *a, MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rd, EXT_NONE);
+ TCGv t0 = tcg_temp_new();
+ TCGv val = tcg_temp_new();
+
+ TCGLabel *l1 = gen_new_label();
+ TCGLabel *done = gen_new_label();
+
+ tcg_gen_addi_tl(t0, src1, a->si14 << 2);
+ tcg_gen_brcond_tl(TCG_COND_EQ, t0, cpu_lladdr, l1);
+ tcg_gen_movi_tl(dest, 0);
+ tcg_gen_br(done);
+
+ gen_set_label(l1);
+ tcg_gen_mov_tl(val, src2);
+ /* generate cmpxchg */
+ tcg_gen_atomic_cmpxchg_tl(t0, cpu_lladdr, cpu_llval,
+ val, ctx->mem_idx, mop);
+ tcg_gen_setcond_tl(TCG_COND_EQ, dest, t0, cpu_llval);
+ gen_set_label(done);
+ tcg_temp_free(t0);
+ tcg_temp_free(val);
+ return true;
+}
+
+static bool gen_am(DisasContext *ctx, arg_fmt_rdrjrk *a,
+ void (*func)(TCGv, TCGv, TCGv, TCGArg, MemOp),
+ MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv val = gpr_src(ctx, a->rk, EXT_NONE);
+
+ if ((a->rd != 0) && ((a->rj == a->rd) || (a->rk == a->rd))) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "Warning: source register overlaps destination register"
+ "in atomic insn at pc=0x" TARGET_FMT_lx "\n",
+ ctx->base.pc_next - 4);
+ return false;
+ }
+
+ func(dest, addr, val, ctx->mem_idx, mop);
+ return true;
+}
+
+static bool gen_am_db(DisasContext *ctx, arg_fmt_rdrjrk *a,
+ void (*func)(TCGv, TCGv, TCGv, TCGArg, MemOp),
+ MemOp mop)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv val = gpr_src(ctx, a->rk, EXT_NONE);
+
+ if ((a->rd != 0) && ((a->rj == a->rd) || (a->rk == a->rd))) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "Warning: source register overlaps destination register"
+ "in atomic insn at pc=0x" TARGET_FMT_lx "\n",
+ ctx->base.pc_next - 4);
+ return false;
+ }
+
+ gen_loongarch_sync(0x10);
+ func(dest, addr, val, ctx->mem_idx, mop);
+
+ return true;
+}
+
+TRANS(ll_w, gen_ll, tcg_gen_qemu_ld32s)
+TRANS(sc_w, gen_sc, MO_TESL)
+TRANS(ll_d, gen_ll, tcg_gen_qemu_ld64)
+TRANS(sc_d, gen_sc, MO_TEQ)
+TRANS(amswap_w, gen_am, tcg_gen_atomic_xchg_tl, MO_TESL)
+TRANS(amswap_d, gen_am, tcg_gen_atomic_xchg_tl, MO_TEQ)
+TRANS(amadd_w, gen_am, tcg_gen_atomic_fetch_add_tl, MO_TESL)
+TRANS(amadd_d, gen_am, tcg_gen_atomic_fetch_add_tl, MO_TEQ)
+TRANS(amand_w, gen_am, tcg_gen_atomic_fetch_and_tl, MO_TESL)
+TRANS(amand_d, gen_am, tcg_gen_atomic_fetch_and_tl, MO_TEQ)
+TRANS(amor_w, gen_am, tcg_gen_atomic_fetch_or_tl, MO_TESL)
+TRANS(amor_d, gen_am, tcg_gen_atomic_fetch_or_tl, MO_TEQ)
+TRANS(amxor_w, gen_am, tcg_gen_atomic_fetch_xor_tl, MO_TESL)
+TRANS(amxor_d, gen_am, tcg_gen_atomic_fetch_xor_tl, MO_TEQ)
+TRANS(ammax_w, gen_am, tcg_gen_atomic_fetch_smax_tl, MO_TESL)
+TRANS(ammax_d, gen_am, tcg_gen_atomic_fetch_smax_tl, MO_TEQ)
+TRANS(ammin_w, gen_am, tcg_gen_atomic_fetch_smin_tl, MO_TESL)
+TRANS(ammin_d, gen_am, tcg_gen_atomic_fetch_smin_tl, MO_TEQ)
+TRANS(ammax_wu, gen_am, tcg_gen_atomic_fetch_umax_tl, MO_TESL)
+TRANS(ammax_du, gen_am, tcg_gen_atomic_fetch_umax_tl, MO_TEQ)
+TRANS(ammin_wu, gen_am, tcg_gen_atomic_fetch_umin_tl, MO_TESL)
+TRANS(ammin_du, gen_am, tcg_gen_atomic_fetch_umin_tl, MO_TEQ)
+TRANS(amswap_db_w, gen_am_db, tcg_gen_atomic_xchg_tl, MO_TESL)
+TRANS(amswap_db_d, gen_am_db, tcg_gen_atomic_xchg_tl, MO_TEQ)
+TRANS(amadd_db_w, gen_am_db, tcg_gen_atomic_fetch_add_tl, MO_TESL)
+TRANS(amadd_db_d, gen_am_db, tcg_gen_atomic_fetch_add_tl, MO_TEQ)
+TRANS(amand_db_w, gen_am_db, tcg_gen_atomic_fetch_and_tl, MO_TESL)
+TRANS(amand_db_d, gen_am_db, tcg_gen_atomic_fetch_and_tl, MO_TEQ)
+TRANS(amor_db_w, gen_am_db, tcg_gen_atomic_fetch_or_tl, MO_TESL)
+TRANS(amor_db_d, gen_am_db, tcg_gen_atomic_fetch_or_tl, MO_TEQ)
+TRANS(amxor_db_w, gen_am_db, tcg_gen_atomic_fetch_xor_tl, MO_TESL)
+TRANS(amxor_db_d, gen_am_db, tcg_gen_atomic_fetch_xor_tl, MO_TEQ)
+TRANS(ammax_db_w, gen_am_db, tcg_gen_atomic_fetch_smax_tl, MO_TESL)
+TRANS(ammax_db_d, gen_am_db, tcg_gen_atomic_fetch_smax_tl, MO_TEQ)
+TRANS(ammin_db_w, gen_am_db, tcg_gen_atomic_fetch_smin_tl, MO_TESL)
+TRANS(ammin_db_d, gen_am_db, tcg_gen_atomic_fetch_smin_tl, MO_TEQ)
+TRANS(ammax_db_wu, gen_am_db, tcg_gen_atomic_fetch_umax_tl, MO_TESL)
+TRANS(ammax_db_du, gen_am_db, tcg_gen_atomic_fetch_umax_tl, MO_TEQ)
+TRANS(ammin_db_wu, gen_am_db, tcg_gen_atomic_fetch_umin_tl, MO_TESL)
+TRANS(ammin_db_du, gen_am_db, tcg_gen_atomic_fetch_umin_tl, MO_TEQ)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 9b808cc..9854d56 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -215,3 +215,47 @@ stle_b 0011 10000111 11100 ..... ..... ..... @fmt_rdrjrk
stle_h 0011 10000111 11101 ..... ..... ..... @fmt_rdrjrk
stle_w 0011 10000111 11110 ..... ..... ..... @fmt_rdrjrk
stle_d 0011 10000111 11111 ..... ..... ..... @fmt_rdrjrk
+
+#
+# Fixed point atomic instruction
+#
+ll_w 0010 0000 .............. ..... ..... @fmt_rdrjsi14
+sc_w 0010 0001 .............. ..... ..... @fmt_rdrjsi14
+ll_d 0010 0010 .............. ..... ..... @fmt_rdrjsi14
+sc_d 0010 0011 .............. ..... ..... @fmt_rdrjsi14
+amswap_w 0011 10000110 00000 ..... ..... ..... @fmt_rdrjrk
+amswap_d 0011 10000110 00001 ..... ..... ..... @fmt_rdrjrk
+amadd_w 0011 10000110 00010 ..... ..... ..... @fmt_rdrjrk
+amadd_d 0011 10000110 00011 ..... ..... ..... @fmt_rdrjrk
+amand_w 0011 10000110 00100 ..... ..... ..... @fmt_rdrjrk
+amand_d 0011 10000110 00101 ..... ..... ..... @fmt_rdrjrk
+amor_w 0011 10000110 00110 ..... ..... ..... @fmt_rdrjrk
+amor_d 0011 10000110 00111 ..... ..... ..... @fmt_rdrjrk
+amxor_w 0011 10000110 01000 ..... ..... ..... @fmt_rdrjrk
+amxor_d 0011 10000110 01001 ..... ..... ..... @fmt_rdrjrk
+ammax_w 0011 10000110 01010 ..... ..... ..... @fmt_rdrjrk
+ammax_d 0011 10000110 01011 ..... ..... ..... @fmt_rdrjrk
+ammin_w 0011 10000110 01100 ..... ..... ..... @fmt_rdrjrk
+ammin_d 0011 10000110 01101 ..... ..... ..... @fmt_rdrjrk
+ammax_wu 0011 10000110 01110 ..... ..... ..... @fmt_rdrjrk
+ammax_du 0011 10000110 01111 ..... ..... ..... @fmt_rdrjrk
+ammin_wu 0011 10000110 10000 ..... ..... ..... @fmt_rdrjrk
+ammin_du 0011 10000110 10001 ..... ..... ..... @fmt_rdrjrk
+amswap_db_w 0011 10000110 10010 ..... ..... ..... @fmt_rdrjrk
+amswap_db_d 0011 10000110 10011 ..... ..... ..... @fmt_rdrjrk
+amadd_db_w 0011 10000110 10100 ..... ..... ..... @fmt_rdrjrk
+amadd_db_d 0011 10000110 10101 ..... ..... ..... @fmt_rdrjrk
+amand_db_w 0011 10000110 10110 ..... ..... ..... @fmt_rdrjrk
+amand_db_d 0011 10000110 10111 ..... ..... ..... @fmt_rdrjrk
+amor_db_w 0011 10000110 11000 ..... ..... ..... @fmt_rdrjrk
+amor_db_d 0011 10000110 11001 ..... ..... ..... @fmt_rdrjrk
+amxor_db_w 0011 10000110 11010 ..... ..... ..... @fmt_rdrjrk
+amxor_db_d 0011 10000110 11011 ..... ..... ..... @fmt_rdrjrk
+ammax_db_w 0011 10000110 11100 ..... ..... ..... @fmt_rdrjrk
+ammax_db_d 0011 10000110 11101 ..... ..... ..... @fmt_rdrjrk
+ammin_db_w 0011 10000110 11110 ..... ..... ..... @fmt_rdrjrk
+ammin_db_d 0011 10000110 11111 ..... ..... ..... @fmt_rdrjrk
+ammax_db_wu 0011 10000111 00000 ..... ..... ..... @fmt_rdrjrk
+ammax_db_du 0011 10000111 00001 ..... ..... ..... @fmt_rdrjrk
+ammin_db_wu 0011 10000111 00010 ..... ..... ..... @fmt_rdrjrk
+ammin_db_du 0011 10000111 00011 ..... ..... ..... @fmt_rdrjrk
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index f0e5b62..37755c4 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -173,6 +173,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_shift.c.inc"
#include "insn_trans/trans_bit.c.inc"
#include "insn_trans/trans_memory.c.inc"
+#include "insn_trans/trans_atomic.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 09/26] target/loongarch: Add fixed point extra instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (7 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 08/26] target/loongarch: Add fixed point atomic " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 10/26] target/loongarch: Add floating point arithmetic " Song Gao
` (16 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- CRC[C].W.{B/H/W/D}.W
- SYSCALL
- BREAK
- ASRT{LE/GT}.D
- RDTIME{L/H}.W, RDTIME.D
- CPUCFG
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/helper.h | 4 ++
| 84 +++++++++++++++++++++++++++
target/loongarch/insns.decode | 25 ++++++++
target/loongarch/op_helper.c | 26 +++++++++
target/loongarch/translate.c | 1 +
5 files changed, 140 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_extra.c.inc
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
index 2fe4e63..ec6760d 100644
--- a/target/loongarch/helper.h
+++ b/target/loongarch/helper.h
@@ -11,3 +11,7 @@ DEF_HELPER_FLAGS_1(bitswap, TCG_CALL_NO_RWG_SE, tl, tl)
DEF_HELPER_3(asrtle_d, void, env, tl, tl)
DEF_HELPER_3(asrtgt_d, void, env, tl, tl)
+
+DEF_HELPER_3(crc32, tl, tl, tl, tl)
+DEF_HELPER_3(crc32c, tl, tl, tl, tl)
+DEF_HELPER_2(cpucfg, tl, env, tl)
--git a/target/loongarch/insn_trans/trans_extra.c.inc b/target/loongarch/insn_trans/trans_extra.c.inc
new file mode 100644
index 0000000..76f0698
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_extra.c.inc
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool trans_break(DisasContext *ctx, arg_break *a)
+{
+ generate_exception(ctx, EXCP_BREAK);
+ return true;
+}
+
+static bool trans_syscall(DisasContext *ctx, arg_syscall *a)
+{
+ generate_exception(ctx, EXCP_SYSCALL);
+ return true;
+}
+
+static bool trans_asrtle_d(DisasContext *ctx, arg_asrtle_d * a)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+ gen_helper_asrtle_d(cpu_env, src1, src2);
+ return true;
+}
+
+static bool trans_asrtgt_d(DisasContext *ctx, arg_asrtgt_d * a)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+ gen_helper_asrtgt_d(cpu_env, src1, src2);
+ return true;
+}
+
+static bool trans_rdtimel_w(DisasContext *ctx, arg_rdtimel_w *a)
+{
+ tcg_gen_movi_tl(cpu_gpr[a->rd], 0);
+ return true;
+}
+
+static bool trans_rdtimeh_w(DisasContext *ctx, arg_rdtimeh_w *a)
+{
+ tcg_gen_movi_tl(cpu_gpr[a->rd], 0);
+ return true;
+}
+
+static bool trans_rdtime_d(DisasContext *ctx, arg_rdtime_d *a)
+{
+ tcg_gen_movi_tl(cpu_gpr[a->rd], 0);
+ return true;
+}
+
+static bool trans_cpucfg(DisasContext *ctx, arg_cpucfg *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ gen_helper_cpucfg(dest, cpu_env, src1);
+ return true;
+}
+
+static bool gen_crc(DisasContext *ctx, arg_fmt_rdrjrk *a,
+ void (*func)(TCGv, TCGv, TCGv, TCGv),
+ TCGv tsz)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_SIGN);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+
+ func(dest, src2, src1, tsz);
+
+ gen_set_gpr(a->rd, dest, EXT_SIGN);
+ return true;
+}
+
+TRANS(crc_w_b_w, gen_crc, gen_helper_crc32, tcg_constant_tl(1))
+TRANS(crc_w_h_w, gen_crc, gen_helper_crc32, tcg_constant_tl(2))
+TRANS(crc_w_w_w, gen_crc, gen_helper_crc32, tcg_constant_tl(4))
+TRANS(crc_w_d_w, gen_crc, gen_helper_crc32, tcg_constant_tl(8))
+TRANS(crcc_w_b_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(1))
+TRANS(crcc_w_h_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(2))
+TRANS(crcc_w_w_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(4))
+TRANS(crcc_w_d_w, gen_crc, gen_helper_crc32c, tcg_constant_tl(8))
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 9854d56..5e205ad 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -26,6 +26,7 @@
%si14 10:s14
%hint 0:5
%whint 0:15
+%code 0:15
#
# Argument sets
@@ -45,6 +46,8 @@
&fmt_rdrjsi14 rd rj si14
&fmt_hintrjsi12 hint rj si12
&fmt_whint whint
+&fmt_rjrk rj rk
+&fmt_code code
#
# Formats
@@ -64,6 +67,8 @@
@fmt_hintrjsi12 .... ...... ............ ..... ..... &fmt_hintrjsi12 %hint %rj %si12
@fmt_whint .... ........ ..... ............... &fmt_whint %whint
@fmt_rdrjsi14 .... .... .............. ..... ..... &fmt_rdrjsi14 %rd %rj %si14
+@fmt_rjrk .... ........ ..... ..... ..... ..... &fmt_rjrk %rj %rk
+@fmt_code .... ........ ..... ............... &fmt_code %code
#
# Fixed point arithmetic operation instruction
@@ -259,3 +264,23 @@ ammax_db_wu 0011 10000111 00000 ..... ..... ..... @fmt_rdrjrk
ammax_db_du 0011 10000111 00001 ..... ..... ..... @fmt_rdrjrk
ammin_db_wu 0011 10000111 00010 ..... ..... ..... @fmt_rdrjrk
ammin_db_du 0011 10000111 00011 ..... ..... ..... @fmt_rdrjrk
+
+#
+# Fixed point extra instruction
+#
+crc_w_b_w 0000 00000010 01000 ..... ..... ..... @fmt_rdrjrk
+crc_w_h_w 0000 00000010 01001 ..... ..... ..... @fmt_rdrjrk
+crc_w_w_w 0000 00000010 01010 ..... ..... ..... @fmt_rdrjrk
+crc_w_d_w 0000 00000010 01011 ..... ..... ..... @fmt_rdrjrk
+crcc_w_b_w 0000 00000010 01100 ..... ..... ..... @fmt_rdrjrk
+crcc_w_h_w 0000 00000010 01101 ..... ..... ..... @fmt_rdrjrk
+crcc_w_w_w 0000 00000010 01110 ..... ..... ..... @fmt_rdrjrk
+crcc_w_d_w 0000 00000010 01111 ..... ..... ..... @fmt_rdrjrk
+break 0000 00000010 10100 ............... @fmt_code
+syscall 0000 00000010 10110 ............... @fmt_code
+asrtle_d 0000 00000000 00010 ..... ..... 00000 @fmt_rjrk
+asrtgt_d 0000 00000000 00011 ..... ..... 00000 @fmt_rjrk
+rdtimel_w 0000 00000000 00000 11000 ..... ..... @fmt_rdrj
+rdtimeh_w 0000 00000000 00000 11001 ..... ..... @fmt_rdrj
+rdtime_d 0000 00000000 00000 11010 ..... ..... @fmt_rdrj
+cpucfg 0000 00000000 00000 11011 ..... ..... @fmt_rdrj
diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c
index 53ee9ff..fdd4303 100644
--- a/target/loongarch/op_helper.c
+++ b/target/loongarch/op_helper.c
@@ -13,6 +13,8 @@
#include "exec/exec-all.h"
#include "exec/cpu_ldst.h"
#include "internals.h"
+#include "qemu/crc32c.h"
+#include <zlib.h>
/* Exceptions helpers */
void helper_raise_exception(CPULoongArchState *env, uint32_t exception)
@@ -56,3 +58,27 @@ void helper_asrtgt_d(CPULoongArchState *env, target_ulong rj, target_ulong rk)
do_raise_exception(env, EXCP_ADE, GETPC());
}
}
+
+target_ulong helper_crc32(target_ulong val, target_ulong m, uint64_t sz)
+{
+ uint8_t buf[8];
+ target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
+
+ m &= mask;
+ stq_le_p(buf, m);
+ return (int32_t) (crc32(val ^ 0xffffffff, buf, sz) ^ 0xffffffff);
+}
+
+target_ulong helper_crc32c(target_ulong val, target_ulong m, uint64_t sz)
+{
+ uint8_t buf[8];
+ target_ulong mask = ((sz * 8) == 64) ? -1ULL : ((1ULL << (sz * 8)) - 1);
+ m &= mask;
+ stq_le_p(buf, m);
+ return (int32_t) (crc32c(val, buf, sz) ^ 0xffffffff);
+}
+
+target_ulong helper_cpucfg(CPULoongArchState *env, target_ulong rj)
+{
+ return env->cpucfg[rj];
+}
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index 37755c4..e1949c2 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -174,6 +174,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_bit.c.inc"
#include "insn_trans/trans_memory.c.inc"
#include "insn_trans/trans_atomic.c.inc"
+#include "insn_trans/trans_extra.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 10/26] target/loongarch: Add floating point arithmetic instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (8 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 09/26] target/loongarch: Add fixed point extra " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 11/26] target/loongarch: Add floating point comparison " Song Gao
` (15 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- F{ADD/SUB/MUL/DIV}.{S/D}
- F{MADD/MSUB/NMADD/NMSUB}.{S/D}
- F{MAX/MIN}.{S/D}
- F{MAXA/MINA}.{S/D}
- F{ABS/NEG}.{S/D}
- F{SQRT/RECIP/RSQRT}.{S/D}
- F{SCALEB/LOGB/COPYSIGN}.{S/D}
- FCLASS.{S/D}
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/cpu.c | 1 +
target/loongarch/fpu_helper.c | 405 +++++++++++++++++++++++++
target/loongarch/helper.h | 37 +++
target/loongarch/insn_trans/trans_farith.c.inc | 105 +++++++
target/loongarch/insns.decode | 56 ++++
target/loongarch/internals.h | 2 +
target/loongarch/translate.c | 11 +
7 files changed, 617 insertions(+)
create mode 100644 target/loongarch/fpu_helper.c
create mode 100644 target/loongarch/insn_trans/trans_farith.c.inc
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index b3f4444..ad11b98 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -185,6 +185,7 @@ static void loongarch_cpu_reset(DeviceState *dev)
env->fcsr0_mask = 0x1f1f031f;
env->fcsr0 = 0x0;
+ restore_fp_status(env);
cs->exception_index = EXCP_NONE;
}
diff --git a/target/loongarch/fpu_helper.c b/target/loongarch/fpu_helper.c
new file mode 100644
index 0000000..d0ef675
--- /dev/null
+++ b/target/loongarch/fpu_helper.c
@@ -0,0 +1,405 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch float point emulation helpers for QEMU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/exec-all.h"
+#include "exec/cpu_ldst.h"
+#include "fpu/softfloat.h"
+#include "internals.h"
+
+#define FLOAT_TO_INT32_OVERFLOW 0x7fffffff
+#define FLOAT_TO_INT64_OVERFLOW 0x7fffffffffffffffULL
+
+static inline uint64_t nanbox_s(float32 fp)
+{
+ return fp | MAKE_64BIT_MASK(32, 32);
+}
+
+/* Convert loongarch rounding mode in fcsr0 to IEEE library */
+static const FloatRoundMode ieee_rm[4] = {
+ float_round_nearest_even,
+ float_round_to_zero,
+ float_round_up,
+ float_round_down
+};
+
+void restore_fp_status(CPULoongArchState *env)
+{
+ set_float_rounding_mode(ieee_rm[(env->fcsr0 >> FCSR0_RM) & 0x3],
+ &env->fp_status);
+ set_flush_to_zero(0, &env->fp_status);
+}
+
+static int ieee_ex_to_loongarch(int xcpt)
+{
+ int ret = 0;
+ if (xcpt & float_flag_invalid) {
+ ret |= FP_INVALID;
+ }
+ if (xcpt & float_flag_overflow) {
+ ret |= FP_OVERFLOW;
+ }
+ if (xcpt & float_flag_underflow) {
+ ret |= FP_UNDERFLOW;
+ }
+ if (xcpt & float_flag_divbyzero) {
+ ret |= FP_DIV0;
+ }
+ if (xcpt & float_flag_inexact) {
+ ret |= FP_INEXACT;
+ }
+ return ret;
+}
+
+static void update_fcsr0_mask(CPULoongArchState *env, uintptr_t pc, int mask)
+{
+ int flags = get_float_exception_flags(&env->fp_status);
+
+ set_float_exception_flags(0, &env->fp_status);
+
+ if (~mask) {
+ flags = flags & (~mask);
+ }
+
+ if (!flags) {
+ SET_FP_CAUSE(env->fcsr0, flags);
+ return;
+ }
+
+ flags = ieee_ex_to_loongarch(flags);
+ SET_FP_CAUSE(env->fcsr0, flags);
+
+ if (GET_FP_ENABLES(env->fcsr0) & flags) {
+ do_raise_exception(env, EXCP_FPE, pc);
+ } else {
+ UPDATE_FP_FLAGS(env->fcsr0, flags);
+ }
+}
+
+static void update_fcsr0(CPULoongArchState *env, uintptr_t pc)
+{
+ update_fcsr0_mask(env, pc, 0);
+}
+
+uint64_t helper_fadd_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_add((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fadd_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_add(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fsub_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_sub((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fsub_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_sub(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmul_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_mul((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmul_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_mul(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fdiv_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_div((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fdiv_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_div(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmax_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_maxnum((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmax_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_maxnum(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmin_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_minnum((uint32_t)fj, (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmin_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_minnum(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmaxa_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_maxnummag((uint32_t)fj,
+ (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmaxa_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_maxnummag(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmina_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_minnummag((uint32_t)fj,
+ (uint32_t)fk, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmina_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+
+ fd = float64_minnummag(fj, fk, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fscaleb_s(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+ int32_t n = (int32_t)fk;
+
+ fd = nanbox_s(float32_scalbn((uint32_t)fj,
+ n > 0x200 ? 0x200 :
+ n < -0x200 ? -0x200 : n,
+ &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fscaleb_d(CPULoongArchState *env, uint64_t fj, uint64_t fk)
+{
+ uint64_t fd;
+ int64_t n = (int64_t)fk;
+
+ fd = float64_scalbn(fj,
+ n > 0x1000 ? 0x1000 :
+ n < -0x1000 ? -0x1000 : n,
+ &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fsqrt_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_sqrt((uint32_t)fj, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fsqrt_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = float64_sqrt(fj, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_frecip_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_div(float32_one, (uint32_t)fj, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_frecip_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = float64_div(float64_one, fj, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_frsqrt_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ uint32_t fp;
+
+ fp = float32_sqrt((uint32_t)fj, &env->fp_status);
+ fd = nanbox_s(float32_div(float32_one, fp, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_frsqrt_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fp, fd;
+
+ fp = float64_sqrt(fj, &env->fp_status);
+ fd = float64_div(float64_one, fp, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_flogb_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ uint32_t fp;
+ float_status *status = &env->fp_status;
+ FloatRoundMode old_mode = get_float_rounding_mode(status);
+
+ set_float_rounding_mode(float_round_down, status);
+ fp = float32_log2((uint32_t)fj, status);
+ fd = nanbox_s(float32_round_to_int(fp, status));
+ set_float_rounding_mode(old_mode, status);
+ update_fcsr0_mask(env, GETPC(), float_flag_inexact);
+ return fd;
+}
+
+uint64_t helper_flogb_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ float_status *status = &env->fp_status;
+ FloatRoundMode old_mode = get_float_rounding_mode(status);
+
+ set_float_rounding_mode(float_round_down, status);
+ fd = float64_log2(fj, status);
+ fd = float64_round_to_int(fd, status);
+ set_float_rounding_mode(old_mode, status);
+ update_fcsr0_mask(env, GETPC(), float_flag_inexact);
+ return fd;
+}
+
+uint64_t helper_fclass_s(CPULoongArchState *env, uint64_t fj)
+{
+ float32 f = fj;
+ bool sign = float32_is_neg(f);
+
+ if (float32_is_infinity(f)) {
+ return sign ? 1 << 0 : 1 << 7;
+ } else if (float32_is_zero(f)) {
+ return sign ? 1 << 3 : 1 << 4;
+ } else if (float32_is_zero_or_denormal(f)) {
+ return sign ? 1 << 2 : 1 << 5;
+ } else if (float32_is_any_nan(f)) {
+ float_status s = { }; /* for snan_bit_is_one */
+ return float32_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
+ } else {
+ return sign ? 1 << 1 : 1 << 6;
+ }
+}
+
+uint64_t helper_fclass_d(CPULoongArchState *env, uint64_t fj)
+{
+ float64 f = fj;
+ bool sign = float64_is_neg(f);
+
+ if (float64_is_infinity(f)) {
+ return sign ? 1 << 0 : 1 << 7;
+ } else if (float64_is_zero(f)) {
+ return sign ? 1 << 3 : 1 << 4;
+ } else if (float64_is_zero_or_denormal(f)) {
+ return sign ? 1 << 2 : 1 << 5;
+ } else if (float64_is_any_nan(f)) {
+ float_status s = { }; /* for snan_bit_is_one */
+ return float64_is_quiet_nan(f, &s) ? 1 << 9 : 1 << 8;
+ } else {
+ return sign ? 1 << 1 : 1 << 6;
+ }
+}
+
+uint64_t helper_fmuladd_s(CPULoongArchState *env, uint64_t fj,
+ uint64_t fk, uint64_t fa, uint32_t flag)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float32_muladd((uint32_t)fj, (uint32_t)fk,
+ (uint32_t)fa, flag, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fmuladd_d(CPULoongArchState *env, uint64_t fj,
+ uint64_t fk, uint64_t fa, uint32_t flag)
+{
+ uint64_t fd;
+
+ fd = float64_muladd(fj, fk, fa, flag, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
index ec6760d..d6bb412 100644
--- a/target/loongarch/helper.h
+++ b/target/loongarch/helper.h
@@ -15,3 +15,40 @@ DEF_HELPER_3(asrtgt_d, void, env, tl, tl)
DEF_HELPER_3(crc32, tl, tl, tl, tl)
DEF_HELPER_3(crc32c, tl, tl, tl, tl)
DEF_HELPER_2(cpucfg, tl, env, tl)
+
+/* Floating-point helper */
+DEF_HELPER_3(fadd_s, i64, env, i64, i64)
+DEF_HELPER_3(fadd_d, i64, env, i64, i64)
+DEF_HELPER_3(fsub_s, i64, env, i64, i64)
+DEF_HELPER_3(fsub_d, i64, env, i64, i64)
+DEF_HELPER_3(fmul_s, i64, env, i64, i64)
+DEF_HELPER_3(fmul_d, i64, env, i64, i64)
+DEF_HELPER_3(fdiv_s, i64, env, i64, i64)
+DEF_HELPER_3(fdiv_d, i64, env, i64, i64)
+DEF_HELPER_3(fmax_s, i64, env, i64, i64)
+DEF_HELPER_3(fmax_d, i64, env, i64, i64)
+DEF_HELPER_3(fmin_s, i64, env, i64, i64)
+DEF_HELPER_3(fmin_d, i64, env, i64, i64)
+DEF_HELPER_3(fmaxa_s, i64, env, i64, i64)
+DEF_HELPER_3(fmaxa_d, i64, env, i64, i64)
+DEF_HELPER_3(fmina_s, i64, env, i64, i64)
+DEF_HELPER_3(fmina_d, i64, env, i64, i64)
+
+DEF_HELPER_5(fmuladd_s, i64, env, i64, i64, i64, i32)
+DEF_HELPER_5(fmuladd_d, i64, env, i64, i64, i64, i32)
+
+DEF_HELPER_3(fscaleb_s, i64, env, i64, i64)
+DEF_HELPER_3(fscaleb_d, i64, env, i64, i64)
+
+DEF_HELPER_2(flogb_s, i64, env, i64)
+DEF_HELPER_2(flogb_d, i64, env, i64)
+
+DEF_HELPER_2(fsqrt_s, i64, env, i64)
+DEF_HELPER_2(fsqrt_d, i64, env, i64)
+DEF_HELPER_2(frsqrt_s, i64, env, i64)
+DEF_HELPER_2(frsqrt_d, i64, env, i64)
+DEF_HELPER_2(frecip_s, i64, env, i64)
+DEF_HELPER_2(frecip_d, i64, env, i64)
+
+DEF_HELPER_FLAGS_2(fclass_s, TCG_CALL_NO_RWG_SE, i64, env, i64)
+DEF_HELPER_FLAGS_2(fclass_d, TCG_CALL_NO_RWG_SE, i64, env, i64)
diff --git a/target/loongarch/insn_trans/trans_farith.c.inc b/target/loongarch/insn_trans/trans_farith.c.inc
new file mode 100644
index 0000000..5b40e45
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_farith.c.inc
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_f3(DisasContext *ctx, arg_fmt_fdfjfk *a,
+ void (*func)(TCGv, TCGv_env, TCGv, TCGv))
+{
+ func(cpu_fpr[a->fd], cpu_env, cpu_fpr[a->fj], cpu_fpr[a->fk]);
+ return true;
+}
+
+static bool gen_f2(DisasContext *ctx, arg_fmt_fdfj *a,
+ void (*func)(TCGv, TCGv_env, TCGv))
+{
+ func(cpu_fpr[a->fd], cpu_env, cpu_fpr[a->fj]);
+ return true;
+}
+
+static bool gen_muladd(DisasContext *ctx, arg_fmt_fdfjfkfa *a,
+ void (*func)(TCGv, TCGv_env, TCGv, TCGv, TCGv, TCGv_i32),
+ int flag)
+{
+ TCGv_i32 tflag = tcg_constant_i32(flag);
+ func(cpu_fpr[a->fd], cpu_env, cpu_fpr[a->fj],
+ cpu_fpr[a->fk], cpu_fpr[a->fa], tflag);
+ return true;
+}
+
+static bool trans_fcopysign_s(DisasContext *ctx, arg_fmt_fdfjfk *a)
+{
+ tcg_gen_deposit_i64(cpu_fpr[a->fd], cpu_fpr[a->fk], cpu_fpr[a->fj], 0, 31);
+ return true;
+}
+
+static bool trans_fcopysign_d(DisasContext *ctx, arg_fmt_fdfjfk *a)
+{
+ tcg_gen_deposit_i64(cpu_fpr[a->fd], cpu_fpr[a->fk], cpu_fpr[a->fj], 0, 63);
+ return true;
+}
+
+static bool trans_fabs_s(DisasContext *ctx, arg_fmt_fdfj *a)
+{
+ tcg_gen_andi_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], MAKE_64BIT_MASK(0, 31));
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ return true;
+}
+
+static bool trans_fabs_d(DisasContext *ctx, arg_fmt_fdfj *a)
+{
+ tcg_gen_andi_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], MAKE_64BIT_MASK(0, 63));
+ return true;
+}
+
+static bool trans_fneg_s(DisasContext *ctx, arg_fmt_fdfj *a)
+{
+ tcg_gen_xori_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], 0x80000000);
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ return true;
+}
+
+static bool trans_fneg_d(DisasContext *ctx, arg_fmt_fdfj *a)
+{
+ tcg_gen_xori_i64(cpu_fpr[a->fd], cpu_fpr[a->fj], 0x8000000000000000LL);
+ return true;
+}
+
+TRANS(fadd_s, gen_f3, gen_helper_fadd_s)
+TRANS(fadd_d, gen_f3, gen_helper_fadd_d)
+TRANS(fsub_s, gen_f3, gen_helper_fsub_s)
+TRANS(fsub_d, gen_f3, gen_helper_fsub_d)
+TRANS(fmul_s, gen_f3, gen_helper_fmul_s)
+TRANS(fmul_d, gen_f3, gen_helper_fmul_d)
+TRANS(fdiv_s, gen_f3, gen_helper_fdiv_s)
+TRANS(fdiv_d, gen_f3, gen_helper_fdiv_d)
+TRANS(fmax_s, gen_f3, gen_helper_fmax_s)
+TRANS(fmax_d, gen_f3, gen_helper_fmax_d)
+TRANS(fmin_s, gen_f3, gen_helper_fmin_s)
+TRANS(fmin_d, gen_f3, gen_helper_fmin_d)
+TRANS(fmaxa_s, gen_f3, gen_helper_fmaxa_s)
+TRANS(fmaxa_d, gen_f3, gen_helper_fmaxa_d)
+TRANS(fmina_s, gen_f3, gen_helper_fmina_s)
+TRANS(fmina_d, gen_f3, gen_helper_fmina_d)
+TRANS(fscaleb_s, gen_f3, gen_helper_fscaleb_s)
+TRANS(fscaleb_d, gen_f3, gen_helper_fscaleb_d)
+TRANS(fsqrt_s, gen_f2, gen_helper_fsqrt_s)
+TRANS(fsqrt_d, gen_f2, gen_helper_fsqrt_d)
+TRANS(frecip_s, gen_f2, gen_helper_frecip_s)
+TRANS(frecip_d, gen_f2, gen_helper_frecip_d)
+TRANS(frsqrt_s, gen_f2, gen_helper_frsqrt_s)
+TRANS(frsqrt_d, gen_f2, gen_helper_frsqrt_d)
+TRANS(flogb_s, gen_f2, gen_helper_flogb_s)
+TRANS(flogb_d, gen_f2, gen_helper_flogb_d)
+TRANS(fclass_s, gen_f2, gen_helper_fclass_s)
+TRANS(fclass_d, gen_f2, gen_helper_fclass_d)
+TRANS(fmadd_s, gen_muladd, gen_helper_fmuladd_s, 0)
+TRANS(fmadd_d, gen_muladd, gen_helper_fmuladd_d, 0)
+TRANS(fmsub_s, gen_muladd, gen_helper_fmuladd_s, float_muladd_negate_c)
+TRANS(fmsub_d, gen_muladd, gen_helper_fmuladd_d, float_muladd_negate_c)
+TRANS(fnmadd_s, gen_muladd, gen_helper_fmuladd_s,
+ float_muladd_negate_product | float_muladd_negate_c)
+TRANS(fnmadd_d, gen_muladd, gen_helper_fmuladd_d,
+ float_muladd_negate_product | float_muladd_negate_c)
+TRANS(fnmsub_s, gen_muladd, gen_helper_fmuladd_s, float_muladd_negate_product)
+TRANS(fnmsub_d, gen_muladd, gen_helper_fmuladd_d, float_muladd_negate_product)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 5e205ad..1007036 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -27,6 +27,10 @@
%hint 0:5
%whint 0:15
%code 0:15
+%fd 0:5
+%fj 5:5
+%fk 10:5
+%fa 15:5
#
# Argument sets
@@ -48,6 +52,9 @@
&fmt_whint whint
&fmt_rjrk rj rk
&fmt_code code
+&fmt_fdfjfk fd fj fk
+&fmt_fdfjfkfa fd fj fk fa
+&fmt_fdfj fd fj
#
# Formats
@@ -69,6 +76,9 @@
@fmt_rdrjsi14 .... .... .............. ..... ..... &fmt_rdrjsi14 %rd %rj %si14
@fmt_rjrk .... ........ ..... ..... ..... ..... &fmt_rjrk %rj %rk
@fmt_code .... ........ ..... ............... &fmt_code %code
+@fmt_fdfjfk .... ........ ..... ..... ..... ..... &fmt_fdfjfk %fd %fj %fk
+@fmt_fdfjfkfa .... ........ ..... ..... ..... ..... &fmt_fdfjfkfa %fd %fj %fk %fa
+@fmt_fdfj .... ........ ..... ..... ..... ..... &fmt_fdfj %fd %fj
#
# Fixed point arithmetic operation instruction
@@ -284,3 +294,49 @@ rdtimel_w 0000 00000000 00000 11000 ..... ..... @fmt_rdrj
rdtimeh_w 0000 00000000 00000 11001 ..... ..... @fmt_rdrj
rdtime_d 0000 00000000 00000 11010 ..... ..... @fmt_rdrj
cpucfg 0000 00000000 00000 11011 ..... ..... @fmt_rdrj
+
+#
+# Floating point arithmetic operation instruction
+#
+fadd_s 0000 00010000 00001 ..... ..... ..... @fmt_fdfjfk
+fadd_d 0000 00010000 00010 ..... ..... ..... @fmt_fdfjfk
+fsub_s 0000 00010000 00101 ..... ..... ..... @fmt_fdfjfk
+fsub_d 0000 00010000 00110 ..... ..... ..... @fmt_fdfjfk
+fmul_s 0000 00010000 01001 ..... ..... ..... @fmt_fdfjfk
+fmul_d 0000 00010000 01010 ..... ..... ..... @fmt_fdfjfk
+fdiv_s 0000 00010000 01101 ..... ..... ..... @fmt_fdfjfk
+fdiv_d 0000 00010000 01110 ..... ..... ..... @fmt_fdfjfk
+fmadd_s 0000 10000001 ..... ..... ..... ..... @fmt_fdfjfkfa
+fmadd_d 0000 10000010 ..... ..... ..... ..... @fmt_fdfjfkfa
+fmsub_s 0000 10000101 ..... ..... ..... ..... @fmt_fdfjfkfa
+fmsub_d 0000 10000110 ..... ..... ..... ..... @fmt_fdfjfkfa
+fnmadd_s 0000 10001001 ..... ..... ..... ..... @fmt_fdfjfkfa
+fnmadd_d 0000 10001010 ..... ..... ..... ..... @fmt_fdfjfkfa
+fnmsub_s 0000 10001101 ..... ..... ..... ..... @fmt_fdfjfkfa
+fnmsub_d 0000 10001110 ..... ..... ..... ..... @fmt_fdfjfkfa
+fmax_s 0000 00010000 10001 ..... ..... ..... @fmt_fdfjfk
+fmax_d 0000 00010000 10010 ..... ..... ..... @fmt_fdfjfk
+fmin_s 0000 00010000 10101 ..... ..... ..... @fmt_fdfjfk
+fmin_d 0000 00010000 10110 ..... ..... ..... @fmt_fdfjfk
+fmaxa_s 0000 00010000 11001 ..... ..... ..... @fmt_fdfjfk
+fmaxa_d 0000 00010000 11010 ..... ..... ..... @fmt_fdfjfk
+fmina_s 0000 00010000 11101 ..... ..... ..... @fmt_fdfjfk
+fmina_d 0000 00010000 11110 ..... ..... ..... @fmt_fdfjfk
+fabs_s 0000 00010001 01000 00001 ..... ..... @fmt_fdfj
+fabs_d 0000 00010001 01000 00010 ..... ..... @fmt_fdfj
+fneg_s 0000 00010001 01000 00101 ..... ..... @fmt_fdfj
+fneg_d 0000 00010001 01000 00110 ..... ..... @fmt_fdfj
+fsqrt_s 0000 00010001 01000 10001 ..... ..... @fmt_fdfj
+fsqrt_d 0000 00010001 01000 10010 ..... ..... @fmt_fdfj
+frecip_s 0000 00010001 01000 10101 ..... ..... @fmt_fdfj
+frecip_d 0000 00010001 01000 10110 ..... ..... @fmt_fdfj
+frsqrt_s 0000 00010001 01000 11001 ..... ..... @fmt_fdfj
+frsqrt_d 0000 00010001 01000 11010 ..... ..... @fmt_fdfj
+fscaleb_s 0000 00010001 00001 ..... ..... ..... @fmt_fdfjfk
+fscaleb_d 0000 00010001 00010 ..... ..... ..... @fmt_fdfjfk
+flogb_s 0000 00010001 01000 01001 ..... ..... @fmt_fdfj
+flogb_d 0000 00010001 01000 01010 ..... ..... @fmt_fdfj
+fcopysign_s 0000 00010001 00101 ..... ..... ..... @fmt_fdfjfk
+fcopysign_d 0000 00010001 00110 ..... ..... ..... @fmt_fdfjfk
+fclass_s 0000 00010001 01000 01101 ..... ..... @fmt_fdfj
+fclass_d 0000 00010001 01000 01110 ..... ..... @fmt_fdfj
diff --git a/target/loongarch/internals.h b/target/loongarch/internals.h
index 1e69e7d..17219d4 100644
--- a/target/loongarch/internals.h
+++ b/target/loongarch/internals.h
@@ -18,4 +18,6 @@ void QEMU_NORETURN do_raise_exception(CPULoongArchState *env,
const char *loongarch_exception_name(int32_t exception);
+void restore_fp_status(CPULoongArchState *env);
+
#endif
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index e1949c2..e34b540 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -15,6 +15,7 @@
#include "exec/translator.h"
#include "exec/log.h"
#include "qemu/qemu-print.h"
+#include "fpu/softfloat.h"
#include "translate.h"
#include "internals.h"
@@ -26,6 +27,15 @@ TCGv_i64 cpu_fpr[32];
#define DISAS_STOP DISAS_TARGET_0
+/*
+ * LoongArch the upper 32 bits are undefined ("can be any value").
+ * QEMU chooses to nanbox, because it is most likely to show guest bugs early.
+ */
+static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in)
+{
+ tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(32, 32));
+}
+
void generate_exception(DisasContext *ctx, int excp)
{
tcg_gen_movi_tl(cpu_pc, ctx->base.pc_next);
@@ -175,6 +185,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_memory.c.inc"
#include "insn_trans/trans_atomic.c.inc"
#include "insn_trans/trans_extra.c.inc"
+#include "insn_trans/trans_farith.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 11/26] target/loongarch: Add floating point comparison instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (9 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 10/26] target/loongarch: Add floating point arithmetic " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 12/26] target/loongarch: Add floating point conversion " Song Gao
` (14 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- FCMP.cond.{S/D}
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/fpu_helper.c | 60 ++++++++++++++++++++++++++++
target/loongarch/helper.h | 9 +++++
target/loongarch/insn_trans/trans_fcmp.c.inc | 56 ++++++++++++++++++++++++++
target/loongarch/insns.decode | 10 +++++
target/loongarch/internals.h | 5 +++
target/loongarch/translate.c | 1 +
6 files changed, 141 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_fcmp.c.inc
diff --git a/target/loongarch/fpu_helper.c b/target/loongarch/fpu_helper.c
index d0ef675..807ffd0 100644
--- a/target/loongarch/fpu_helper.c
+++ b/target/loongarch/fpu_helper.c
@@ -403,3 +403,63 @@ uint64_t helper_fmuladd_d(CPULoongArchState *env, uint64_t fj,
update_fcsr0(env, GETPC());
return fd;
}
+
+static uint64_t fcmp_common(CPULoongArchState *env, FloatRelation cmp,
+ uint32_t flags)
+{
+ bool ret;
+
+ switch (cmp) {
+ case float_relation_less:
+ ret = (flags & FCMP_LT);
+ break;
+ case float_relation_equal:
+ ret = (flags & FCMP_EQ);
+ break;
+ case float_relation_greater:
+ ret = (flags & FCMP_GT);
+ break;
+ case float_relation_unordered:
+ ret = (flags & FCMP_UN);
+ break;
+ default:
+ g_assert_not_reached();
+ }
+ update_fcsr0(env, GETPC());
+
+ return ret;
+}
+
+/* fcmp_cXXX_s */
+uint64_t helper_fcmp_c_s(CPULoongArchState *env, uint64_t fj,
+ uint64_t fk, uint32_t flags)
+{
+ FloatRelation cmp = float32_compare_quiet((uint32_t)fj,
+ (uint32_t)fk, &env->fp_status);
+ return fcmp_common(env, cmp, flags);
+}
+
+/* fcmp_sXXX_s */
+uint64_t helper_fcmp_s_s(CPULoongArchState *env, uint64_t fj,
+ uint64_t fk, uint32_t flags)
+{
+ FloatRelation cmp = float32_compare((uint32_t)fj,
+ (uint32_t)fk, &env->fp_status);
+ return fcmp_common(env, cmp, flags);
+}
+
+/* fcmp_cXXX_d */
+uint64_t helper_fcmp_c_d(CPULoongArchState *env, uint64_t fj,
+ uint64_t fk, uint32_t flags)
+{
+ FloatRelation cmp = float64_compare_quiet(fj, fk, &env->fp_status);
+ return fcmp_common(env, cmp, flags);
+}
+
+/* fcmp_sXXX_d */
+uint64_t helper_fcmp_s_d(CPULoongArchState *env, uint64_t fj,
+ uint64_t fk, uint32_t flags)
+{
+ FloatRelation cmp = float64_compare(fj, fk, &env->fp_status);
+ return fcmp_common(env, cmp, flags);
+}
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
index d6bb412..30b270a 100644
--- a/target/loongarch/helper.h
+++ b/target/loongarch/helper.h
@@ -52,3 +52,12 @@ DEF_HELPER_2(frecip_d, i64, env, i64)
DEF_HELPER_FLAGS_2(fclass_s, TCG_CALL_NO_RWG_SE, i64, env, i64)
DEF_HELPER_FLAGS_2(fclass_d, TCG_CALL_NO_RWG_SE, i64, env, i64)
+
+/* fcmp.cXXX.s */
+DEF_HELPER_4(fcmp_c_s, i64, env, i64, i64, i32)
+/* fcmp.sXXX.s */
+DEF_HELPER_4(fcmp_s_s, i64, env, i64, i64, i32)
+/* fcmp.cXXX.d */
+DEF_HELPER_4(fcmp_c_d, i64, env, i64, i64, i32)
+/* fcmp.sXXX.d */
+DEF_HELPER_4(fcmp_s_d, i64, env, i64, i64, i32)
diff --git a/target/loongarch/insn_trans/trans_fcmp.c.inc b/target/loongarch/insn_trans/trans_fcmp.c.inc
new file mode 100644
index 0000000..ce39c07
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fcmp.c.inc
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+/* bit0(signaling/quiet) bit1(lt) bit2(eq) bit3(un) bit4(neq) */
+static uint32_t get_fcmp_flags(int cond)
+{
+ uint32_t flags = 0;
+
+ if (cond & 0x1) {
+ flags |= FCMP_LT;
+ }
+ if (cond & 0x2) {
+ flags |= FCMP_EQ;
+ }
+ if (cond & 0x4) {
+ flags |= FCMP_UN;
+ }
+ if (cond & 0x8) {
+ flags |= FCMP_GT | FCMP_LT;
+ }
+ return flags;
+}
+
+static bool trans_fcmp_cond_s(DisasContext *ctx, arg_fcmp_cond_s *a)
+{
+ TCGv var = tcg_temp_new();
+ uint32_t flags;
+ void (*fn)(TCGv, TCGv_env, TCGv, TCGv, TCGv_i32);
+
+ fn = (a->fcond & 1 ? gen_helper_fcmp_s_s : gen_helper_fcmp_c_s);
+ flags = get_fcmp_flags(a->fcond >> 1);
+
+ fn(var, cpu_env, cpu_fpr[a->fj], cpu_fpr[a->fk], tcg_constant_i32(flags));
+
+ tcg_gen_st8_tl(var, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7]));
+ tcg_temp_free(var);
+ return true;
+}
+
+static bool trans_fcmp_cond_d(DisasContext *ctx, arg_fcmp_cond_d *a)
+{
+ TCGv var = tcg_temp_new();
+ uint32_t flags;
+ void (*fn)(TCGv, TCGv_env, TCGv, TCGv, TCGv_i32);
+ fn = (a->fcond & 1 ? gen_helper_fcmp_s_d : gen_helper_fcmp_c_d);
+ flags = get_fcmp_flags(a->fcond >> 1);
+
+ fn(var, cpu_env, cpu_fpr[a->fj], cpu_fpr[a->fk], tcg_constant_i32(flags));
+
+ tcg_gen_st8_tl(var, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7]));
+
+ tcg_temp_free(var);
+ return true;
+}
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 1007036..01e4c58 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -31,6 +31,8 @@
%fj 5:5
%fk 10:5
%fa 15:5
+%cd 0:3
+%fcond 15:5
#
# Argument sets
@@ -55,6 +57,7 @@
&fmt_fdfjfk fd fj fk
&fmt_fdfjfkfa fd fj fk fa
&fmt_fdfj fd fj
+&fmt_cdfjfkfcond cd fj fk fcond
#
# Formats
@@ -79,6 +82,7 @@
@fmt_fdfjfk .... ........ ..... ..... ..... ..... &fmt_fdfjfk %fd %fj %fk
@fmt_fdfjfkfa .... ........ ..... ..... ..... ..... &fmt_fdfjfkfa %fd %fj %fk %fa
@fmt_fdfj .... ........ ..... ..... ..... ..... &fmt_fdfj %fd %fj
+@fmt_cdfjfkfcond .... ........ ..... ..... ..... .. ... &fmt_cdfjfkfcond %cd %fj %fk %fcond
#
# Fixed point arithmetic operation instruction
@@ -340,3 +344,9 @@ fcopysign_s 0000 00010001 00101 ..... ..... ..... @fmt_fdfjfk
fcopysign_d 0000 00010001 00110 ..... ..... ..... @fmt_fdfjfk
fclass_s 0000 00010001 01000 01101 ..... ..... @fmt_fdfj
fclass_d 0000 00010001 01000 01110 ..... ..... @fmt_fdfj
+
+#
+# Floating point compare instruction
+#
+fcmp_cond_s 0000 11000001 ..... ..... ..... 00 ... @fmt_cdfjfkfcond
+fcmp_cond_d 0000 11000010 ..... ..... ..... 00 ... @fmt_cdfjfkfcond
diff --git a/target/loongarch/internals.h b/target/loongarch/internals.h
index 17219d4..e9e6374 100644
--- a/target/loongarch/internals.h
+++ b/target/loongarch/internals.h
@@ -8,6 +8,11 @@
#ifndef LOONGARCH_INTERNALS_H
#define LOONGARCH_INTERNALS_H
+#define FCMP_LT 0x0001 /* fp0 < fp1 */
+#define FCMP_EQ 0x0010 /* fp0 = fp1 */
+#define FCMP_UN 0x0100 /* unordered */
+#define FCMP_GT 0x1000 /* fp0 > fp1 */
+
void loongarch_translate_init(void);
void loongarch_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index e34b540..520d95f 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -186,6 +186,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_atomic.c.inc"
#include "insn_trans/trans_extra.c.inc"
#include "insn_trans/trans_farith.c.inc"
+#include "insn_trans/trans_fcmp.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 12/26] target/loongarch: Add floating point conversion instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (10 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 11/26] target/loongarch: Add floating point comparison " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 13/26] target/loongarch: Add floating point move " Song Gao
` (13 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- FCVT.S.D, FCVT.D.S
- FFINT.{S/D}.{W/L}, FTINT.{W/L}.{S/D}
- FTINT{RM/RP/RZ/RNE}.{W/L}.{S/D}
- FRINT.{S/D}
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/fpu_helper.c | 393 +++++++++++++++++++++++++++
target/loongarch/helper.h | 29 ++
target/loongarch/insn_trans/trans_fcnv.c.inc | 33 +++
target/loongarch/insns.decode | 32 +++
target/loongarch/translate.c | 1 +
5 files changed, 488 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_fcnv.c.inc
diff --git a/target/loongarch/fpu_helper.c b/target/loongarch/fpu_helper.c
index 807ffd0..4799b47 100644
--- a/target/loongarch/fpu_helper.c
+++ b/target/loongarch/fpu_helper.c
@@ -463,3 +463,396 @@ uint64_t helper_fcmp_s_d(CPULoongArchState *env, uint64_t fj,
FloatRelation cmp = float64_compare(fj, fk, &env->fp_status);
return fcmp_common(env, cmp, flags);
}
+
+/* floating point conversion */
+uint64_t helper_fcvt_s_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(float64_to_float32(fj, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_fcvt_d_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = float32_to_float64((uint32_t)fj, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ffint_s_w(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(int32_to_float32((int32_t)fj, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ffint_s_l(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = nanbox_s(int64_to_float32(fj, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ffint_d_w(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = int32_to_float64((int32_t)fj, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ffint_d_l(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = int64_to_float64(fj, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_frint_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = (uint64_t)(float32_round_to_int((uint32_t)fj, &env->fp_status));
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_frint_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = float64_round_to_int(fj, &env->fp_status);
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrm_l_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_down, &env->fp_status);
+ fd = float64_to_int64(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrm_l_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_down, &env->fp_status);
+ fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrm_w_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_down, &env->fp_status);
+ fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrm_w_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_down, &env->fp_status);
+ fd = (uint64_t)float32_to_int32((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrp_l_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_up, &env->fp_status);
+ fd = float64_to_int64(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrp_l_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_up, &env->fp_status);
+ fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrp_w_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_up, &env->fp_status);
+ fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrp_w_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_up, &env->fp_status);
+ fd = (uint64_t)float32_to_int32((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrz_l_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ fd = float64_to_int64_round_to_zero(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrz_l_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ fd = float32_to_int64_round_to_zero((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrz_w_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ fd = (uint64_t)float64_to_int32_round_to_zero(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrz_w_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint32_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ fd = float32_to_int32_round_to_zero((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return (uint64_t)fd;
+}
+
+uint64_t helper_ftintrne_l_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+ fd = float64_to_int64(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrne_l_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+ fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrne_w_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+ fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftintrne_w_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint32_t fd;
+ FloatRoundMode old_mode = get_float_rounding_mode(&env->fp_status);
+
+ set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+ fd = float32_to_int32((uint32_t)fj, &env->fp_status);
+ set_float_rounding_mode(old_mode, &env->fp_status);
+
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return (uint64_t)fd;
+}
+
+uint64_t helper_ftint_l_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = float64_to_int64(fj, &env->fp_status);
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftint_l_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = float32_to_int64((uint32_t)fj, &env->fp_status);
+ if (get_float_exception_flags(&env->fp_status) &
+ (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT64_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftint_w_s(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = (uint64_t)float32_to_int32((uint32_t)fj, &env->fp_status);
+ if (get_float_exception_flags(&env->fp_status)
+ & (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
+
+uint64_t helper_ftint_w_d(CPULoongArchState *env, uint64_t fj)
+{
+ uint64_t fd;
+
+ fd = (uint64_t)float64_to_int32(fj, &env->fp_status);
+ if (get_float_exception_flags(&env->fp_status)
+ & (float_flag_invalid | float_flag_overflow)) {
+ fd = FLOAT_TO_INT32_OVERFLOW;
+ }
+ update_fcsr0(env, GETPC());
+ return fd;
+}
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
index 30b270a..51bbf25 100644
--- a/target/loongarch/helper.h
+++ b/target/loongarch/helper.h
@@ -61,3 +61,32 @@ DEF_HELPER_4(fcmp_s_s, i64, env, i64, i64, i32)
DEF_HELPER_4(fcmp_c_d, i64, env, i64, i64, i32)
/* fcmp.sXXX.d */
DEF_HELPER_4(fcmp_s_d, i64, env, i64, i64, i32)
+
+DEF_HELPER_2(fcvt_d_s, i64, env, i64)
+DEF_HELPER_2(fcvt_s_d, i64, env, i64)
+DEF_HELPER_2(ffint_d_w, i64, env, i64)
+DEF_HELPER_2(ffint_d_l, i64, env, i64)
+DEF_HELPER_2(ffint_s_w, i64, env, i64)
+DEF_HELPER_2(ffint_s_l, i64, env, i64)
+DEF_HELPER_2(ftintrm_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrm_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrm_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrm_w_d, i64, env, i64)
+DEF_HELPER_2(ftintrp_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrp_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrp_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrp_w_d, i64, env, i64)
+DEF_HELPER_2(ftintrz_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrz_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrz_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrz_w_d, i64, env, i64)
+DEF_HELPER_2(ftintrne_l_s, i64, env, i64)
+DEF_HELPER_2(ftintrne_l_d, i64, env, i64)
+DEF_HELPER_2(ftintrne_w_s, i64, env, i64)
+DEF_HELPER_2(ftintrne_w_d, i64, env, i64)
+DEF_HELPER_2(ftint_l_s, i64, env, i64)
+DEF_HELPER_2(ftint_l_d, i64, env, i64)
+DEF_HELPER_2(ftint_w_s, i64, env, i64)
+DEF_HELPER_2(ftint_w_d, i64, env, i64)
+DEF_HELPER_2(frint_s, i64, env, i64)
+DEF_HELPER_2(frint_d, i64, env, i64)
diff --git a/target/loongarch/insn_trans/trans_fcnv.c.inc b/target/loongarch/insn_trans/trans_fcnv.c.inc
new file mode 100644
index 0000000..440a8e0
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fcnv.c.inc
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+TRANS(fcvt_s_d, gen_f2, gen_helper_fcvt_s_d)
+TRANS(fcvt_d_s, gen_f2, gen_helper_fcvt_d_s)
+TRANS(ftintrm_w_s, gen_f2, gen_helper_ftintrm_w_s)
+TRANS(ftintrm_w_d, gen_f2, gen_helper_ftintrm_w_d)
+TRANS(ftintrm_l_s, gen_f2, gen_helper_ftintrm_l_s)
+TRANS(ftintrm_l_d, gen_f2, gen_helper_ftintrm_l_d)
+TRANS(ftintrp_w_s, gen_f2, gen_helper_ftintrp_w_s)
+TRANS(ftintrp_w_d, gen_f2, gen_helper_ftintrp_w_d)
+TRANS(ftintrp_l_s, gen_f2, gen_helper_ftintrp_l_s)
+TRANS(ftintrp_l_d, gen_f2, gen_helper_ftintrp_l_d)
+TRANS(ftintrz_w_s, gen_f2, gen_helper_ftintrz_w_s)
+TRANS(ftintrz_w_d, gen_f2, gen_helper_ftintrz_w_d)
+TRANS(ftintrz_l_s, gen_f2, gen_helper_ftintrz_l_s)
+TRANS(ftintrz_l_d, gen_f2, gen_helper_ftintrz_l_d)
+TRANS(ftintrne_w_s, gen_f2, gen_helper_ftintrne_w_s)
+TRANS(ftintrne_w_d, gen_f2, gen_helper_ftintrne_w_d)
+TRANS(ftintrne_l_s, gen_f2, gen_helper_ftintrne_l_s)
+TRANS(ftintrne_l_d, gen_f2, gen_helper_ftintrne_l_d)
+TRANS(ftint_w_s, gen_f2, gen_helper_ftint_w_s)
+TRANS(ftint_w_d, gen_f2, gen_helper_ftint_w_d)
+TRANS(ftint_l_s, gen_f2, gen_helper_ftint_l_s)
+TRANS(ftint_l_d, gen_f2, gen_helper_ftint_l_d)
+TRANS(ffint_s_w, gen_f2, gen_helper_ffint_s_w)
+TRANS(ffint_s_l, gen_f2, gen_helper_ffint_s_l)
+TRANS(ffint_d_w, gen_f2, gen_helper_ffint_d_w)
+TRANS(ffint_d_l, gen_f2, gen_helper_ffint_d_l)
+TRANS(frint_s, gen_f2, gen_helper_frint_s)
+TRANS(frint_d, gen_f2, gen_helper_frint_d)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 01e4c58..105feeb 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -350,3 +350,35 @@ fclass_d 0000 00010001 01000 01110 ..... ..... @fmt_fdfj
#
fcmp_cond_s 0000 11000001 ..... ..... ..... 00 ... @fmt_cdfjfkfcond
fcmp_cond_d 0000 11000010 ..... ..... ..... 00 ... @fmt_cdfjfkfcond
+
+#
+# Floating point conversion instruction
+#
+fcvt_s_d 0000 00010001 10010 00110 ..... ..... @fmt_fdfj
+fcvt_d_s 0000 00010001 10010 01001 ..... ..... @fmt_fdfj
+ftintrm_w_s 0000 00010001 10100 00001 ..... ..... @fmt_fdfj
+ftintrm_w_d 0000 00010001 10100 00010 ..... ..... @fmt_fdfj
+ftintrm_l_s 0000 00010001 10100 01001 ..... ..... @fmt_fdfj
+ftintrm_l_d 0000 00010001 10100 01010 ..... ..... @fmt_fdfj
+ftintrp_w_s 0000 00010001 10100 10001 ..... ..... @fmt_fdfj
+ftintrp_w_d 0000 00010001 10100 10010 ..... ..... @fmt_fdfj
+ftintrp_l_s 0000 00010001 10100 11001 ..... ..... @fmt_fdfj
+ftintrp_l_d 0000 00010001 10100 11010 ..... ..... @fmt_fdfj
+ftintrz_w_s 0000 00010001 10101 00001 ..... ..... @fmt_fdfj
+ftintrz_w_d 0000 00010001 10101 00010 ..... ..... @fmt_fdfj
+ftintrz_l_s 0000 00010001 10101 01001 ..... ..... @fmt_fdfj
+ftintrz_l_d 0000 00010001 10101 01010 ..... ..... @fmt_fdfj
+ftintrne_w_s 0000 00010001 10101 10001 ..... ..... @fmt_fdfj
+ftintrne_w_d 0000 00010001 10101 10010 ..... ..... @fmt_fdfj
+ftintrne_l_s 0000 00010001 10101 11001 ..... ..... @fmt_fdfj
+ftintrne_l_d 0000 00010001 10101 11010 ..... ..... @fmt_fdfj
+ftint_w_s 0000 00010001 10110 00001 ..... ..... @fmt_fdfj
+ftint_w_d 0000 00010001 10110 00010 ..... ..... @fmt_fdfj
+ftint_l_s 0000 00010001 10110 01001 ..... ..... @fmt_fdfj
+ftint_l_d 0000 00010001 10110 01010 ..... ..... @fmt_fdfj
+ffint_s_w 0000 00010001 11010 00100 ..... ..... @fmt_fdfj
+ffint_s_l 0000 00010001 11010 00110 ..... ..... @fmt_fdfj
+ffint_d_w 0000 00010001 11010 01000 ..... ..... @fmt_fdfj
+ffint_d_l 0000 00010001 11010 01010 ..... ..... @fmt_fdfj
+frint_s 0000 00010001 11100 10001 ..... ..... @fmt_fdfj
+frint_d 0000 00010001 11100 10010 ..... ..... @fmt_fdfj
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index 520d95f..1a54b70 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -187,6 +187,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_extra.c.inc"
#include "insn_trans/trans_farith.c.inc"
#include "insn_trans/trans_fcmp.c.inc"
+#include "insn_trans/trans_fcnv.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 13/26] target/loongarch: Add floating point move instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (11 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 12/26] target/loongarch: Add floating point conversion " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 14/26] target/loongarch: Add floating point load/store " Song Gao
` (12 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- FMOV.{S/D}
- FSEL
- MOVGR2FR.{W/D}, MOVGR2FRH.W
- MOVFR2GR.{S/D}, MOVFRH2GR.S
- MOVGR2FCSR, MOVFCSR2GR
- MOVFR2CF, MOVCF2FR
- MOVGR2CF, MOVCF2GR
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/fpu_helper.c | 6 ++
target/loongarch/helper.h | 2 +
target/loongarch/insn_trans/trans_fmov.c.inc | 150 +++++++++++++++++++++++++++
target/loongarch/insns.decode | 41 ++++++++
target/loongarch/translate.c | 1 +
5 files changed, 200 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_fmov.c.inc
diff --git a/target/loongarch/fpu_helper.c b/target/loongarch/fpu_helper.c
index 4799b47..babaa16 100644
--- a/target/loongarch/fpu_helper.c
+++ b/target/loongarch/fpu_helper.c
@@ -856,3 +856,9 @@ uint64_t helper_ftint_w_d(CPULoongArchState *env, uint64_t fj)
update_fcsr0(env, GETPC());
return fd;
}
+
+void helper_set_rounding_mode(CPULoongArchState *env, uint32_t fcsr0)
+{
+ set_float_rounding_mode(ieee_rm[(fcsr0 >> FCSR0_RM) & 0x3],
+ &env->fp_status);
+}
diff --git a/target/loongarch/helper.h b/target/loongarch/helper.h
index 51bbf25..26ca6d2 100644
--- a/target/loongarch/helper.h
+++ b/target/loongarch/helper.h
@@ -90,3 +90,5 @@ DEF_HELPER_2(ftint_w_s, i64, env, i64)
DEF_HELPER_2(ftint_w_d, i64, env, i64)
DEF_HELPER_2(frint_s, i64, env, i64)
DEF_HELPER_2(frint_d, i64, env, i64)
+
+DEF_HELPER_FLAGS_2(set_rounding_mode, TCG_CALL_NO_RWG, void, env, i32)
diff --git a/target/loongarch/insn_trans/trans_fmov.c.inc b/target/loongarch/insn_trans/trans_fmov.c.inc
new file mode 100644
index 0000000..6171f2b
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fmov.c.inc
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static const uint32_t fcsr_mask[4] = {
+ UINT32_MAX, FCSR0_M1, FCSR0_M2, FCSR0_M3
+};
+
+static bool trans_fsel(DisasContext *ctx, arg_fsel *a)
+{
+ TCGv zero = tcg_constant_tl(0);
+ TCGv cond = tcg_temp_new();
+
+ tcg_gen_ld8u_tl(cond, cpu_env, offsetof(CPULoongArchState, cf[a->ca]));
+ tcg_gen_movcond_tl(TCG_COND_EQ, cpu_fpr[a->fd], cond, zero,
+ cpu_fpr[a->fj], cpu_fpr[a->fk]);
+ tcg_temp_free(cond);
+ return true;
+}
+
+static bool gen_f2f(DisasContext *ctx, arg_fmt_fdfj *a,
+ void (*func)(TCGv, TCGv), bool nanbox)
+{
+ TCGv dest = cpu_fpr[a->fd];
+ TCGv src = cpu_fpr[a->fj];
+
+ func(dest, src);
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+ return true;
+}
+
+static bool gen_r2f(DisasContext *ctx, arg_fmt_fdrj *a,
+ void (*func)(TCGv, TCGv))
+{
+ TCGv src = gpr_src(ctx, a->rj, EXT_NONE);
+
+ func(cpu_fpr[a->fd], src);
+ return true;
+}
+
+static bool gen_f2r(DisasContext *ctx, arg_fmt_rdfj *a,
+ void (*func)(TCGv, TCGv))
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+
+ func(dest, cpu_fpr[a->fj]);
+ return true;
+}
+
+static bool trans_movgr2fcsr(DisasContext *ctx, arg_movgr2fcsr *a)
+{
+ uint32_t mask = fcsr_mask[a->fcsrd];
+ TCGv Rj = gpr_src(ctx, a->rj, EXT_NONE);
+
+ if (mask == UINT32_MAX) {
+ tcg_gen_extrl_i64_i32(cpu_fcsr0, Rj);
+ } else {
+ TCGv_i32 temp = tcg_temp_new_i32();
+
+ tcg_gen_extrl_i64_i32(temp, Rj);
+ tcg_gen_andi_i32(temp, temp, mask);
+ tcg_gen_andi_i32(cpu_fcsr0, cpu_fcsr0, ~mask);
+ tcg_gen_or_i32(cpu_fcsr0, cpu_fcsr0, temp);
+ tcg_temp_free_i32(temp);
+
+ /*
+ * Install the new rounding mode to fpu_status, if changed.
+ * Note that FCSR3 is exactly the rounding mode field.
+ */
+ if (mask != FCSR0_M3) {
+ return true;
+ }
+ }
+ gen_helper_set_rounding_mode(cpu_env, cpu_fcsr0);
+ return true;
+}
+
+static bool trans_movfcsr2gr(DisasContext *ctx, arg_movfcsr2gr *a)
+{
+ TCGv_i32 temp = tcg_temp_new_i32();
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+
+ tcg_gen_andi_i32(temp, cpu_fcsr0, fcsr_mask[a->fcsrs]);
+ tcg_gen_ext_i32_i64(dest, temp);
+ tcg_temp_free_i32(temp);
+ return true;
+}
+
+static void gen_movgr2fr_w(TCGv dest, TCGv src)
+{
+ tcg_gen_deposit_i64(dest, dest, src, 0, 32);
+}
+
+static void gen_movgr2frh_w(TCGv dest, TCGv src)
+{
+ tcg_gen_deposit_i64(dest, dest, src, 32, 32);
+}
+
+static void gen_movfrh2gr_s(TCGv dest, TCGv src)
+{
+ tcg_gen_sextract_tl(dest, src, 32, 32);
+}
+
+static bool trans_movfr2cf(DisasContext *ctx, arg_movfr2cf *a)
+{
+ TCGv t0 = tcg_temp_new();
+
+ tcg_gen_andi_tl(t0, cpu_fpr[a->fj], 0x1);
+ tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7]));
+
+ tcg_temp_free(t0);
+ return true;
+}
+
+static bool trans_movcf2fr(DisasContext *ctx, arg_movcf2fr *a)
+{
+ tcg_gen_ld8u_tl(cpu_fpr[a->fd], cpu_env,
+ offsetof(CPULoongArchState, cf[a->cj & 0x7]));
+ return true;
+}
+
+static bool trans_movgr2cf(DisasContext *ctx, arg_movgr2cf *a)
+{
+ TCGv t0 = tcg_temp_new();
+
+ tcg_gen_andi_tl(t0, gpr_src(ctx, a->rj, EXT_NONE), 0x1);
+ tcg_gen_st8_tl(t0, cpu_env, offsetof(CPULoongArchState, cf[a->cd & 0x7]));
+
+ tcg_temp_free(t0);
+ return true;
+}
+
+static bool trans_movcf2gr(DisasContext *ctx, arg_movcf2gr *a)
+{
+ tcg_gen_ld8u_tl(gpr_dst(ctx, a->rd, EXT_NONE), cpu_env,
+ offsetof(CPULoongArchState, cf[a->cj & 0x7]));
+ return true;
+}
+
+TRANS(fmov_s, gen_f2f, tcg_gen_mov_tl, true)
+TRANS(fmov_d, gen_f2f, tcg_gen_mov_tl, false)
+TRANS(movgr2fr_w, gen_r2f, gen_movgr2fr_w)
+TRANS(movgr2fr_d, gen_r2f, tcg_gen_mov_tl)
+TRANS(movgr2frh_w, gen_r2f, gen_movgr2frh_w)
+TRANS(movfr2gr_s, gen_f2r, tcg_gen_ext32s_tl)
+TRANS(movfr2gr_d, gen_f2r, tcg_gen_mov_tl)
+TRANS(movfrh2gr_s, gen_f2r, gen_movfrh2gr_s)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index 105feeb..c37b9c9 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -33,6 +33,10 @@
%fa 15:5
%cd 0:3
%fcond 15:5
+%cj 5:3
+%ca 15:3
+%fcsrd 0:5
+%fcsrs 5:5
#
# Argument sets
@@ -58,6 +62,15 @@
&fmt_fdfjfkfa fd fj fk fa
&fmt_fdfj fd fj
&fmt_cdfjfkfcond cd fj fk fcond
+&fmt_fdfjfkca fd fj fk ca
+&fmt_fdrj fd rj
+&fmt_rdfj rd fj
+&fmt_fcsrdrj fcsrd rj
+&fmt_rdfcsrs rd fcsrs
+&fmt_cdfj cd fj
+&fmt_fdcj fd cj
+&fmt_cdrj cd rj
+&fmt_rdcj rd cj
#
# Formats
@@ -83,6 +96,15 @@
@fmt_fdfjfkfa .... ........ ..... ..... ..... ..... &fmt_fdfjfkfa %fd %fj %fk %fa
@fmt_fdfj .... ........ ..... ..... ..... ..... &fmt_fdfj %fd %fj
@fmt_cdfjfkfcond .... ........ ..... ..... ..... .. ... &fmt_cdfjfkfcond %cd %fj %fk %fcond
+@fmt_fdfjfkca .... ........ .. ... ..... ..... ..... &fmt_fdfjfkca %fd %fj %fk %ca
+@fmt_fdrj .... ........ ..... ..... ..... ..... &fmt_fdrj %fd %rj
+@fmt_rdfj .... ........ ..... ..... ..... ..... &fmt_rdfj %rd %fj
+@fmt_fcsrdrj .... ........ ..... ..... ..... ..... &fmt_fcsrdrj %fcsrd %rj
+@fmt_rdfcsrs .... ........ ..... ..... ..... ..... &fmt_rdfcsrs %rd %fcsrs
+@fmt_cdfj .... ........ ..... ..... ..... .. ... &fmt_cdfj %cd %fj
+@fmt_fdcj .... ........ ..... ..... .. ... ..... &fmt_fdcj %fd %cj
+@fmt_cdrj .... ........ ..... ..... ..... .. ... &fmt_cdrj %cd %rj
+@fmt_rdcj .... ........ ..... ..... .. ... ..... &fmt_rdcj %rd %cj
#
# Fixed point arithmetic operation instruction
@@ -382,3 +404,22 @@ ffint_d_w 0000 00010001 11010 01000 ..... ..... @fmt_fdfj
ffint_d_l 0000 00010001 11010 01010 ..... ..... @fmt_fdfj
frint_s 0000 00010001 11100 10001 ..... ..... @fmt_fdfj
frint_d 0000 00010001 11100 10010 ..... ..... @fmt_fdfj
+
+#
+# Floating point move instruction
+#
+fmov_s 0000 00010001 01001 00101 ..... ..... @fmt_fdfj
+fmov_d 0000 00010001 01001 00110 ..... ..... @fmt_fdfj
+fsel 0000 11010000 00 ... ..... ..... ..... @fmt_fdfjfkca
+movgr2fr_w 0000 00010001 01001 01001 ..... ..... @fmt_fdrj
+movgr2fr_d 0000 00010001 01001 01010 ..... ..... @fmt_fdrj
+movgr2frh_w 0000 00010001 01001 01011 ..... ..... @fmt_fdrj
+movfr2gr_s 0000 00010001 01001 01101 ..... ..... @fmt_rdfj
+movfr2gr_d 0000 00010001 01001 01110 ..... ..... @fmt_rdfj
+movfrh2gr_s 0000 00010001 01001 01111 ..... ..... @fmt_rdfj
+movgr2fcsr 0000 00010001 01001 10000 ..... ..... @fmt_fcsrdrj
+movfcsr2gr 0000 00010001 01001 10010 ..... ..... @fmt_rdfcsrs
+movfr2cf 0000 00010001 01001 10100 ..... 00 ... @fmt_cdfj
+movcf2fr 0000 00010001 01001 10101 00 ... ..... @fmt_fdcj
+movgr2cf 0000 00010001 01001 10110 ..... 00 ... @fmt_cdrj
+movcf2gr 0000 00010001 01001 10111 00 ... ..... @fmt_rdcj
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index 1a54b70..5dc8849 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -188,6 +188,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_farith.c.inc"
#include "insn_trans/trans_fcmp.c.inc"
#include "insn_trans/trans_fcnv.c.inc"
+#include "insn_trans/trans_fmov.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 14/26] target/loongarch: Add floating point load/store instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (12 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 13/26] target/loongarch: Add floating point move " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 15/26] target/loongarch: Add branch " Song Gao
` (11 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- FLD.{S/D}, FST.{S/D}
- FLDX.{S/D}, FSTX.{S/D}
- FLD{GT/LE}.{S/D}, FST{GT/LE}.{S/D}
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/insn_trans/trans_fmemory.c.inc | 184 ++++++++++++++++++++++++
target/loongarch/insns.decode | 24 ++++
target/loongarch/translate.c | 1 +
3 files changed, 209 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_fmemory.c.inc
diff --git a/target/loongarch/insn_trans/trans_fmemory.c.inc b/target/loongarch/insn_trans/trans_fmemory.c.inc
new file mode 100644
index 0000000..31d738e
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_fmemory.c.inc
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool gen_fload_imm(DisasContext *ctx, arg_fmt_fdrjsi12 *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv temp = NULL;
+
+ if (a->si12) {
+ temp = tcg_temp_new();
+ tcg_gen_addi_tl(temp, addr, a->si12);
+ addr = temp;
+ }
+
+ tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ if (temp) {
+ tcg_temp_free(temp);
+ }
+ return true;
+}
+
+static bool gen_fstore_imm(DisasContext *ctx, arg_fmt_fdrjsi12 *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv addr = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv temp = NULL;
+
+ if (a->si12) {
+ temp = tcg_temp_new();
+ tcg_gen_addi_tl(temp, addr, a->si12);
+ addr = temp;
+ }
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ if (temp) {
+ tcg_temp_free(temp);
+ }
+ return true;
+}
+
+static bool gen_fload_tl(DisasContext *ctx, arg_fmt_fdrjrk *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_fstore_tl(DisasContext *ctx, arg_fmt_fdrjrk *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ tcg_gen_add_tl(addr, src1, src2);
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_fload_gt(DisasContext *ctx, arg_fmt_fdrjrk *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtgt_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_fstore_gt(DisasContext *ctx, arg_fmt_fdrjrk *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtgt_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_fload_le(DisasContext *ctx, arg_fmt_fdrjrk *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtle_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+ tcg_gen_qemu_ld_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+static bool gen_fstore_le(DisasContext *ctx, arg_fmt_fdrjrk *a,
+ MemOp mop, bool nanbox)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rk, EXT_NONE);
+ TCGv addr = tcg_temp_new();
+
+ gen_helper_asrtle_d(cpu_env, src1, src2);
+ tcg_gen_add_tl(addr, src1, src2);
+
+ if (nanbox) {
+ gen_nanbox_s(cpu_fpr[a->fd], cpu_fpr[a->fd]);
+ }
+
+ tcg_gen_qemu_st_tl(cpu_fpr[a->fd], addr, ctx->mem_idx, mop);
+
+ tcg_temp_free(addr);
+ return true;
+}
+
+TRANS(fld_s, gen_fload_imm, MO_TESL, true)
+TRANS(fst_s, gen_fstore_imm, MO_TEUL, true)
+TRANS(fld_d, gen_fload_imm, MO_TEQ, false)
+TRANS(fst_d, gen_fstore_imm, MO_TEQ, false)
+TRANS(fldx_s, gen_fload_tl, MO_TESL, true)
+TRANS(fldx_d, gen_fload_tl, MO_TEQ, false)
+TRANS(fstx_s, gen_fstore_tl, MO_TEUL, true)
+TRANS(fstx_d, gen_fstore_tl, MO_TEQ, false)
+TRANS(fldgt_s, gen_fload_gt, MO_TESL, true)
+TRANS(fldgt_d, gen_fload_gt, MO_TEQ, false)
+TRANS(fldle_s, gen_fload_le, MO_TESL, true)
+TRANS(fldle_d, gen_fload_le, MO_TEQ, false)
+TRANS(fstgt_s, gen_fstore_gt, MO_TEUL, true)
+TRANS(fstgt_d, gen_fstore_gt, MO_TEQ, false)
+TRANS(fstle_s, gen_fstore_le, MO_TEUL, true)
+TRANS(fstle_d, gen_fstore_le, MO_TEQ, false)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index c37b9c9..ee1d544 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -71,6 +71,8 @@
&fmt_fdcj fd cj
&fmt_cdrj cd rj
&fmt_rdcj rd cj
+&fmt_fdrjrk fd rj rk
+&fmt_fdrjsi12 fd rj si12
#
# Formats
@@ -105,6 +107,8 @@
@fmt_fdcj .... ........ ..... ..... .. ... ..... &fmt_fdcj %fd %cj
@fmt_cdrj .... ........ ..... ..... ..... .. ... &fmt_cdrj %cd %rj
@fmt_rdcj .... ........ ..... ..... .. ... ..... &fmt_rdcj %rd %cj
+@fmt_fdrjrk .... ........ ..... ..... ..... ..... &fmt_fdrjrk %fd %rj %rk
+@fmt_fdrjsi12 .... ...... ............ ..... ..... &fmt_fdrjsi12 %fd %rj %si12
#
# Fixed point arithmetic operation instruction
@@ -423,3 +427,23 @@ movfr2cf 0000 00010001 01001 10100 ..... 00 ... @fmt_cdfj
movcf2fr 0000 00010001 01001 10101 00 ... ..... @fmt_fdcj
movgr2cf 0000 00010001 01001 10110 ..... 00 ... @fmt_cdrj
movcf2gr 0000 00010001 01001 10111 00 ... ..... @fmt_rdcj
+
+#
+# Floating point load/store instruction
+#
+fld_s 0010 101100 ............ ..... ..... @fmt_fdrjsi12
+fst_s 0010 101101 ............ ..... ..... @fmt_fdrjsi12
+fld_d 0010 101110 ............ ..... ..... @fmt_fdrjsi12
+fst_d 0010 101111 ............ ..... ..... @fmt_fdrjsi12
+fldx_s 0011 10000011 00000 ..... ..... ..... @fmt_fdrjrk
+fldx_d 0011 10000011 01000 ..... ..... ..... @fmt_fdrjrk
+fstx_s 0011 10000011 10000 ..... ..... ..... @fmt_fdrjrk
+fstx_d 0011 10000011 11000 ..... ..... ..... @fmt_fdrjrk
+fldgt_s 0011 10000111 01000 ..... ..... ..... @fmt_fdrjrk
+fldgt_d 0011 10000111 01001 ..... ..... ..... @fmt_fdrjrk
+fldle_s 0011 10000111 01010 ..... ..... ..... @fmt_fdrjrk
+fldle_d 0011 10000111 01011 ..... ..... ..... @fmt_fdrjrk
+fstgt_s 0011 10000111 01100 ..... ..... ..... @fmt_fdrjrk
+fstgt_d 0011 10000111 01101 ..... ..... ..... @fmt_fdrjrk
+fstle_s 0011 10000111 01110 ..... ..... ..... @fmt_fdrjrk
+fstle_d 0011 10000111 01111 ..... ..... ..... @fmt_fdrjrk
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index 5dc8849..bf329fd 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -189,6 +189,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_fcmp.c.inc"
#include "insn_trans/trans_fcnv.c.inc"
#include "insn_trans/trans_fmov.c.inc"
+#include "insn_trans/trans_fmemory.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 15/26] target/loongarch: Add branch instruction translation
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (13 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 14/26] target/loongarch: Add floating point load/store " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 6:53 ` [PATCH v10 16/26] target/loongarch: Add disassembler Song Gao
` (10 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- BEQ, BNE, BLT[U], BGE[U]
- BEQZ, BNEZ
- B
- BL
- JIRL
- BCEQZ, BCNEZ
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
target/loongarch/insn_trans/trans_branch.c.inc | 82 ++++++++++++++++++++++++++
target/loongarch/insns.decode | 30 ++++++++++
target/loongarch/translate.c | 1 +
3 files changed, 113 insertions(+)
create mode 100644 target/loongarch/insn_trans/trans_branch.c.inc
diff --git a/target/loongarch/insn_trans/trans_branch.c.inc b/target/loongarch/insn_trans/trans_branch.c.inc
new file mode 100644
index 0000000..ecb6bd1
--- /dev/null
+++ b/target/loongarch/insn_trans/trans_branch.c.inc
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+static bool trans_b(DisasContext *ctx, arg_b *a)
+{
+ gen_goto_tb(ctx, 0, ctx->base.pc_next + (a->offs << 2));
+ ctx->base.is_jmp = DISAS_NORETURN;
+ return true;
+}
+
+static bool trans_bl(DisasContext *ctx, arg_bl *a)
+{
+ tcg_gen_movi_tl(cpu_gpr[1], ctx->base.pc_next + 4);
+ gen_goto_tb(ctx, 0, ctx->base.pc_next + (a->offs << 2));
+ ctx->base.is_jmp = DISAS_NORETURN;
+ return true;
+}
+
+static bool trans_jirl(DisasContext *ctx, arg_jirl *a)
+{
+ TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+
+ tcg_gen_addi_tl(cpu_pc, src1, (a->offs16) << 2);
+ tcg_gen_movi_tl(dest, ctx->base.pc_next + 4);
+ tcg_gen_lookup_and_goto_ptr();
+ ctx->base.is_jmp = DISAS_NORETURN;
+ return true;
+}
+
+static void gen_bc(DisasContext *ctx, TCGv src1, TCGv src2,
+ target_long offs, TCGCond cond)
+{
+ TCGLabel *l = gen_new_label();
+ tcg_gen_brcond_tl(cond, src1, src2, l);
+ gen_goto_tb(ctx, 1, ctx->base.pc_next + 4);
+ gen_set_label(l);
+ gen_goto_tb(ctx, 0, ctx->base.pc_next + offs);
+ ctx->base.is_jmp = DISAS_NORETURN;
+}
+
+static bool gen_r2_bc(DisasContext *ctx, arg_fmt_rjrdoffs16 *a, TCGCond cond)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = gpr_src(ctx, a->rd, EXT_NONE);
+
+ gen_bc(ctx, src1, src2, (a->offs16 << 2), cond);
+ return true;
+}
+
+static bool gen_rz_bc(DisasContext *ctx, arg_fmt_rjoffs21 *a, TCGCond cond)
+{
+ TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+ TCGv src2 = tcg_constant_tl(0);
+
+ gen_bc(ctx, src1, src2, (a->offs21 << 2), cond);
+ return true;
+}
+
+static bool gen_cz_bc(DisasContext *ctx, arg_fmt_cjoffs21 *a, TCGCond cond)
+{
+ TCGv src1 = tcg_temp_new();
+ TCGv src2 = tcg_constant_tl(0);
+
+ tcg_gen_ld8u_tl(src1, cpu_env,
+ offsetof(CPULoongArchState, cf[a->cj & 0x7]));
+ gen_bc(ctx, src1, src2, (a->offs21 << 2), cond);
+ return true;
+}
+
+TRANS(beq, gen_r2_bc, TCG_COND_EQ)
+TRANS(bne, gen_r2_bc, TCG_COND_NE)
+TRANS(blt, gen_r2_bc, TCG_COND_LT)
+TRANS(bge, gen_r2_bc, TCG_COND_GE)
+TRANS(bltu, gen_r2_bc, TCG_COND_LTU)
+TRANS(bgeu, gen_r2_bc, TCG_COND_GEU)
+TRANS(beqz, gen_rz_bc, TCG_COND_EQ)
+TRANS(bnez, gen_rz_bc, TCG_COND_NE)
+TRANS(bceqz, gen_cz_bc, TCG_COND_EQ)
+TRANS(bcnez, gen_cz_bc, TCG_COND_NE)
diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index ee1d544..e28b843 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -37,6 +37,9 @@
%ca 15:3
%fcsrd 0:5
%fcsrs 5:5
+%offs21 0:s5 10:16
+%offs16 10:s16
+%offs 0:s10 10:16
#
# Argument sets
@@ -73,6 +76,11 @@
&fmt_rdcj rd cj
&fmt_fdrjrk fd rj rk
&fmt_fdrjsi12 fd rj si12
+&fmt_rjoffs21 rj offs21
+&fmt_cjoffs21 cj offs21
+&fmt_rdrjoffs16 rd rj offs16
+&fmt_offs offs
+&fmt_rjrdoffs16 rj rd offs16
#
# Formats
@@ -109,6 +117,11 @@
@fmt_rdcj .... ........ ..... ..... .. ... ..... &fmt_rdcj %rd %cj
@fmt_fdrjrk .... ........ ..... ..... ..... ..... &fmt_fdrjrk %fd %rj %rk
@fmt_fdrjsi12 .... ...... ............ ..... ..... &fmt_fdrjsi12 %fd %rj %si12
+@fmt_rjoffs21 .... .. ................ ..... ..... &fmt_rjoffs21 %rj %offs21
+@fmt_cjoffs21 .... .. ................ .. ... ..... &fmt_cjoffs21 %cj %offs21
+@fmt_rdrjoffs16 .... .. ................ ..... ..... &fmt_rdrjoffs16 %rd %rj %offs16
+@fmt_offs .... .. .......................... &fmt_offs %offs
+@fmt_rjrdoffs16 .... .. ................ ..... ..... &fmt_rjrdoffs16 %rj %rd %offs16
#
# Fixed point arithmetic operation instruction
@@ -447,3 +460,20 @@ fstgt_s 0011 10000111 01100 ..... ..... ..... @fmt_fdrjrk
fstgt_d 0011 10000111 01101 ..... ..... ..... @fmt_fdrjrk
fstle_s 0011 10000111 01110 ..... ..... ..... @fmt_fdrjrk
fstle_d 0011 10000111 01111 ..... ..... ..... @fmt_fdrjrk
+
+#
+# Branch instructions
+#
+beqz 0100 00 ................ ..... ..... @fmt_rjoffs21
+bnez 0100 01 ................ ..... ..... @fmt_rjoffs21
+bceqz 0100 10 ................ 00 ... ..... @fmt_cjoffs21
+bcnez 0100 10 ................ 01 ... ..... @fmt_cjoffs21
+jirl 0100 11 ................ ..... ..... @fmt_rdrjoffs16
+b 0101 00 .......................... @fmt_offs
+bl 0101 01 .......................... @fmt_offs
+beq 0101 10 ................ ..... ..... @fmt_rjrdoffs16
+bne 0101 11 ................ ..... ..... @fmt_rjrdoffs16
+blt 0110 00 ................ ..... ..... @fmt_rjrdoffs16
+bge 0110 01 ................ ..... ..... @fmt_rjrdoffs16
+bltu 0110 10 ................ ..... ..... @fmt_rjrdoffs16
+bgeu 0110 11 ................ ..... ..... @fmt_rjrdoffs16
diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index bf329fd..437f33d 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -190,6 +190,7 @@ static void gen_set_gpr(int reg_num, TCGv t, DisasExtend dst_ext)
#include "insn_trans/trans_fcnv.c.inc"
#include "insn_trans/trans_fmov.c.inc"
#include "insn_trans/trans_fmemory.c.inc"
+#include "insn_trans/trans_branch.c.inc"
static void loongarch_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 16/26] target/loongarch: Add disassembler
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (14 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 15/26] target/loongarch: Add branch " Song Gao
@ 2021-11-12 6:53 ` Song Gao
2021-11-12 7:39 ` Richard Henderson
2021-11-12 6:54 ` [PATCH v10 17/26] linux-user: Add LoongArch generic header files Song Gao
` (9 subsequent siblings)
25 siblings, 1 reply; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:53 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This patch adds support for disassembling via option '-d in_asm'.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
---
include/disas/dis-asm.h | 2 +
meson.build | 1 +
target/loongarch/disas.c | 696 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 699 insertions(+)
create mode 100644 target/loongarch/disas.c
diff --git a/include/disas/dis-asm.h b/include/disas/dis-asm.h
index 08e1bee..aeab30f 100644
--- a/include/disas/dis-asm.h
+++ b/include/disas/dis-asm.h
@@ -253,6 +253,7 @@ enum bfd_architecture
#define bfd_mach_rx 0x75
#define bfd_mach_rx_v2 0x76
#define bfd_mach_rx_v3 0x77
+ bfd_arch_loongarch,
bfd_arch_last
};
#define bfd_mach_s390_31 31
@@ -461,6 +462,7 @@ int print_insn_riscv32 (bfd_vma, disassemble_info*);
int print_insn_riscv64 (bfd_vma, disassemble_info*);
int print_insn_rx(bfd_vma, disassemble_info *);
int print_insn_hexagon(bfd_vma, disassemble_info *);
+int print_insn_loongarch(bfd_vma, disassemble_info *);
#ifdef CONFIG_CAPSTONE
bool cap_disas_target(disassemble_info *info, uint64_t pc, size_t size);
diff --git a/meson.build b/meson.build
index 2ece4fe..1ebd641 100644
--- a/meson.build
+++ b/meson.build
@@ -1801,6 +1801,7 @@ disassemblers = {
'sh4' : ['CONFIG_SH4_DIS'],
'sparc' : ['CONFIG_SPARC_DIS'],
'xtensa' : ['CONFIG_XTENSA_DIS'],
+ 'loongarch' : ['CONFIG_LOONGARCH_DIS'],
}
if link_language == 'cpp'
disassemblers += {
diff --git a/target/loongarch/disas.c b/target/loongarch/disas.c
new file mode 100644
index 0000000..8391b4b
--- /dev/null
+++ b/target/loongarch/disas.c
@@ -0,0 +1,696 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch Disassembler
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited.
+ */
+
+#include "qemu/osdep.h"
+#include "disas/dis-asm.h"
+#include "qemu/bitops.h"
+#include "cpu.h"
+
+const char * const fccregnames[8] = {
+ "$fcc0", "$fcc1", "$fcc2", "$fcc3", "$fcc4", "$fcc5", "$fcc6", "$fcc7",
+};
+
+typedef struct {
+ disassemble_info *info;
+ uint32_t insn;
+} DisasContext;
+
+#define output(C, INSN, FMT, ...) \
+{ \
+ (C)->info->fprintf_func((C)->info->stream, "%08x %-9s\t" FMT, \
+ (C)->insn, INSN, ##__VA_ARGS__); \
+}
+
+#include "decode-insns.c.inc"
+
+int print_insn_loongarch(bfd_vma memaddr, struct disassemble_info *info)
+{
+ bfd_byte buffer[4];
+ uint32_t insn;
+ int status;
+
+ status = (*info->read_memory_func)(memaddr, buffer, 4, info);
+ if (status != 0) {
+ (*info->memory_error_func)(status, memaddr, info);
+ return -1;
+ }
+ insn = bfd_getl32(buffer);
+ DisasContext ctx = {
+ .info = info,
+ .insn = insn
+ };
+
+ if (!decode(&ctx, insn)) {
+ output(&ctx, "illegal", "");
+ }
+ return 4;
+}
+
+static void output_rdrj(DisasContext *ctx, arg_fmt_rdrj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", regnames[a->rd], regnames[a->rj]);
+}
+
+static void output_rjrk(DisasContext *ctx, arg_fmt_rjrk *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", regnames[a->rj], regnames[a->rk]);
+}
+
+static void output_rdrjrk(DisasContext *ctx, arg_fmt_rdrjrk *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, %s",
+ regnames[a->rd], regnames[a->rj], regnames[a->rk]);
+}
+
+static void output_rdrjrksa2(DisasContext *ctx, arg_fmt_rdrjrksa2 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], regnames[a->rk], a->sa2);
+}
+
+static void output_rdrjrksa3(DisasContext *ctx, arg_fmt_rdrjrksa3 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], regnames[a->rk], a->sa3);
+}
+
+static void output_code(DisasContext *ctx, arg_fmt_code *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "0x%x", a->code);
+}
+
+static void output_rdrjui5(DisasContext *ctx, arg_fmt_rdrjui5 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], a->ui5);
+}
+
+static void output_rdrjui6(DisasContext *ctx, arg_fmt_rdrjui6 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], a->ui6);
+}
+
+static void output_rdrjmsbwlsbw(DisasContext *ctx,
+ arg_fmt_rdrjmsbwlsbw *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x, 0x%x",
+ regnames[a->rd], regnames[a->rj], a->msbw, a->lsbw);
+}
+
+static void output_rdrjmsbdlsbd(DisasContext *ctx,
+ arg_fmt_rdrjmsbdlsbd *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x, 0x%x",
+ regnames[a->rd], regnames[a->rj], a->msbd, a->lsbd);
+}
+
+static void output_fdfjfk(DisasContext *ctx, arg_fmt_fdfjfk *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, %s",
+ fregnames[a->fd], fregnames[a->fj], fregnames[a->fk]);
+}
+
+static void output_fdfj(DisasContext *ctx, arg_fmt_fdfj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", fregnames[a->fd], fregnames[a->fj]);
+}
+
+static void output_fcsrdrj(DisasContext *ctx, arg_fmt_fcsrdrj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", regnames[a->fcsrd], regnames[a->rj]);
+}
+
+static void output_rdfcsrs(DisasContext *ctx, arg_fmt_rdfcsrs *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", regnames[a->rd], regnames[a->fcsrs]);
+}
+
+static void output_cdfj(DisasContext *ctx, arg_fmt_cdfj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", fccregnames[a->cd], fregnames[a->fj]);
+}
+
+static void output_cdrj(DisasContext *ctx, arg_fmt_cdrj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", fccregnames[a->cd], regnames[a->rj]);
+}
+
+static void output_fdcj(DisasContext *ctx, arg_fmt_fdcj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", fregnames[a->fd], fccregnames[a->cj]);
+}
+
+static void output_rdcj(DisasContext *ctx, arg_fmt_rdcj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", regnames[a->rd], fccregnames[a->cj]);
+}
+
+static void output_rdrjsi12(DisasContext *ctx, arg_fmt_rdrjsi12 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], (a->si12) & 0xfff);
+}
+
+static void output_fdfjfkfa(DisasContext *ctx, arg_fmt_fdfjfkfa *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, %s, %s",
+ fregnames[a->fd], fregnames[a->fj],
+ fregnames[a->fk], fregnames[a->fk]);
+}
+
+static void output_fdfjfkca(DisasContext *ctx, arg_fmt_fdfjfkca *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, %s, %s",
+ fregnames[a->fd], fregnames[a->fj],
+ fregnames[a->fk], fccregnames[a->ca]);
+}
+
+static void output_rdrjsi16(DisasContext *ctx, arg_fmt_rdrjsi16 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], (a->si16) & 0xffff);
+}
+
+static void output_rdsi20(DisasContext *ctx, arg_fmt_rdsi20 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, 0x%x", regnames[a->rd], (a->si20) & 0xfffff);
+}
+
+static void output_rdrjsi14(DisasContext *ctx, arg_fmt_rdrjsi14 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], (a->si14) & 0x3fff);
+}
+
+static void output_hintrjsi12(DisasContext *ctx, arg_fmt_hintrjsi12 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "0x%x, %s, 0x%x",
+ a->hint, regnames[a->rj], (a->si12) & 0xfff);
+}
+
+static void output_fdrjsi12(DisasContext *ctx, arg_fmt_fdrjsi12 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ fregnames[a->fd], regnames[a->rj], (a->si12) & 0xfff);
+}
+
+static void output_fdrjrk(DisasContext *ctx, arg_fmt_fdrjrk *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, %s",
+ fregnames[a->fd], regnames[a->rj], regnames[a->rk]);
+}
+
+static void output_whint(DisasContext *ctx, arg_fmt_whint *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "0x%x", a->whint);
+}
+
+static void output_rjoffs21(DisasContext *ctx, arg_fmt_rjoffs21 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, 0x%x", regnames[a->rj], (a->offs21) & 0x1fffff);
+}
+
+static void output_cjoffs21(DisasContext *ctx, arg_fmt_cjoffs21 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, 0x%x",
+ fccregnames[a->cj], (a->offs21) & 0x1fffff);
+}
+
+static void output_rdrjoffs16(DisasContext *ctx, arg_fmt_rdrjoffs16 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], (a->offs16) & 0xffff);
+}
+
+static void output_offs(DisasContext *ctx, arg_fmt_offs *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "0x%x", (a->offs) & 0x3ffffff);
+}
+
+static void output_rjrdoffs16(DisasContext *ctx, arg_fmt_rjrdoffs16 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rj], regnames[a->rd], (a->offs16) & 0xffff);
+}
+
+static void output_fdrj(DisasContext *ctx, arg_fmt_fdrj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", fregnames[a->fd], regnames[a->rj]);
+}
+
+static void output_rdfj(DisasContext *ctx, arg_fmt_rdfj *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s", regnames[a->rd], regnames[a->fj]);
+}
+
+static void output_rdrjui12(DisasContext *ctx, arg_fmt_rdrjui12 *a,
+ const char *mnemonic)
+{
+ output(ctx, mnemonic, "%s, %s, 0x%x",
+ regnames[a->rd], regnames[a->rj], (a->ui12) & 0xfff);
+}
+
+#define INSN(insn, type) \
+static bool trans_##insn(DisasContext *ctx, arg_fmt_##type * a) \
+{ \
+ output_##type(ctx, a, #insn); \
+ return true; \
+}
+
+INSN(clo_w, rdrj)
+INSN(clz_w, rdrj)
+INSN(cto_w, rdrj)
+INSN(ctz_w, rdrj)
+INSN(clo_d, rdrj)
+INSN(clz_d, rdrj)
+INSN(cto_d, rdrj)
+INSN(ctz_d, rdrj)
+INSN(revb_2h, rdrj)
+INSN(revb_4h, rdrj)
+INSN(revb_2w, rdrj)
+INSN(revb_d, rdrj)
+INSN(revh_2w, rdrj)
+INSN(revh_d, rdrj)
+INSN(bitrev_4b, rdrj)
+INSN(bitrev_8b, rdrj)
+INSN(bitrev_w, rdrj)
+INSN(bitrev_d, rdrj)
+INSN(ext_w_h, rdrj)
+INSN(ext_w_b, rdrj)
+INSN(rdtime_d, rdrj)
+INSN(cpucfg, rdrj)
+INSN(asrtle_d, rjrk)
+INSN(asrtgt_d, rjrk)
+INSN(alsl_w, rdrjrksa2)
+INSN(alsl_wu, rdrjrksa2)
+INSN(bytepick_w, rdrjrksa2)
+INSN(bytepick_d, rdrjrksa3)
+INSN(add_w, rdrjrk)
+INSN(add_d, rdrjrk)
+INSN(sub_w, rdrjrk)
+INSN(sub_d, rdrjrk)
+INSN(slt, rdrjrk)
+INSN(sltu, rdrjrk)
+INSN(maskeqz, rdrjrk)
+INSN(masknez, rdrjrk)
+INSN(nor, rdrjrk)
+INSN(and, rdrjrk)
+INSN(or, rdrjrk)
+INSN(xor, rdrjrk)
+INSN(orn, rdrjrk)
+INSN(andn, rdrjrk)
+INSN(sll_w, rdrjrk)
+INSN(srl_w, rdrjrk)
+INSN(sra_w, rdrjrk)
+INSN(sll_d, rdrjrk)
+INSN(srl_d, rdrjrk)
+INSN(sra_d, rdrjrk)
+INSN(rotr_w, rdrjrk)
+INSN(rotr_d, rdrjrk)
+INSN(mul_w, rdrjrk)
+INSN(mulh_w, rdrjrk)
+INSN(mulh_wu, rdrjrk)
+INSN(mul_d, rdrjrk)
+INSN(mulh_d, rdrjrk)
+INSN(mulh_du, rdrjrk)
+INSN(mulw_d_w, rdrjrk)
+INSN(mulw_d_wu, rdrjrk)
+INSN(div_w, rdrjrk)
+INSN(mod_w, rdrjrk)
+INSN(div_wu, rdrjrk)
+INSN(mod_wu, rdrjrk)
+INSN(div_d, rdrjrk)
+INSN(mod_d, rdrjrk)
+INSN(div_du, rdrjrk)
+INSN(mod_du, rdrjrk)
+INSN(crc_w_b_w, rdrjrk)
+INSN(crc_w_h_w, rdrjrk)
+INSN(crc_w_w_w, rdrjrk)
+INSN(crc_w_d_w, rdrjrk)
+INSN(crcc_w_b_w, rdrjrk)
+INSN(crcc_w_h_w, rdrjrk)
+INSN(crcc_w_w_w, rdrjrk)
+INSN(crcc_w_d_w, rdrjrk)
+INSN(break, code)
+INSN(syscall, code)
+INSN(alsl_d, rdrjrksa2)
+INSN(slli_w, rdrjui5)
+INSN(slli_d, rdrjui6)
+INSN(srli_w, rdrjui5)
+INSN(srli_d, rdrjui6)
+INSN(srai_w, rdrjui5)
+INSN(srai_d, rdrjui6)
+INSN(rotri_w, rdrjui5)
+INSN(rotri_d, rdrjui6)
+INSN(bstrins_w, rdrjmsbwlsbw)
+INSN(bstrpick_w, rdrjmsbwlsbw)
+INSN(bstrins_d, rdrjmsbdlsbd)
+INSN(bstrpick_d, rdrjmsbdlsbd)
+INSN(fadd_s, fdfjfk)
+INSN(fadd_d, fdfjfk)
+INSN(fsub_s, fdfjfk)
+INSN(fsub_d, fdfjfk)
+INSN(fmul_s, fdfjfk)
+INSN(fmul_d, fdfjfk)
+INSN(fdiv_s, fdfjfk)
+INSN(fdiv_d, fdfjfk)
+INSN(fmax_s, fdfjfk)
+INSN(fmax_d, fdfjfk)
+INSN(fmin_s, fdfjfk)
+INSN(fmin_d, fdfjfk)
+INSN(fmaxa_s, fdfjfk)
+INSN(fmaxa_d, fdfjfk)
+INSN(fmina_s, fdfjfk)
+INSN(fmina_d, fdfjfk)
+INSN(fscaleb_s, fdfjfk)
+INSN(fscaleb_d, fdfjfk)
+INSN(fcopysign_s, fdfjfk)
+INSN(fcopysign_d, fdfjfk)
+INSN(fabs_s, fdfj)
+INSN(fabs_d, fdfj)
+INSN(fneg_s, fdfj)
+INSN(fneg_d, fdfj)
+INSN(flogb_s, fdfj)
+INSN(flogb_d, fdfj)
+INSN(fclass_s, fdfj)
+INSN(fclass_d, fdfj)
+INSN(fsqrt_s, fdfj)
+INSN(fsqrt_d, fdfj)
+INSN(frecip_s, fdfj)
+INSN(frecip_d, fdfj)
+INSN(frsqrt_s, fdfj)
+INSN(frsqrt_d, fdfj)
+INSN(fmov_s, fdfj)
+INSN(fmov_d, fdfj)
+INSN(movgr2fr_w, fdrj)
+INSN(movgr2fr_d, fdrj)
+INSN(movgr2frh_w, fdrj)
+INSN(movfr2gr_s, rdfj)
+INSN(movfr2gr_d, rdfj)
+INSN(movfrh2gr_s, rdfj)
+INSN(movgr2fcsr, fcsrdrj)
+INSN(movfcsr2gr, rdfcsrs)
+INSN(movfr2cf, cdfj)
+INSN(movcf2fr, fdcj)
+INSN(movgr2cf, cdrj)
+INSN(movcf2gr, rdcj)
+INSN(fcvt_s_d, fdfj)
+INSN(fcvt_d_s, fdfj)
+INSN(ftintrm_w_s, fdfj)
+INSN(ftintrm_w_d, fdfj)
+INSN(ftintrm_l_s, fdfj)
+INSN(ftintrm_l_d, fdfj)
+INSN(ftintrp_w_s, fdfj)
+INSN(ftintrp_w_d, fdfj)
+INSN(ftintrp_l_s, fdfj)
+INSN(ftintrp_l_d, fdfj)
+INSN(ftintrz_w_s, fdfj)
+INSN(ftintrz_w_d, fdfj)
+INSN(ftintrz_l_s, fdfj)
+INSN(ftintrz_l_d, fdfj)
+INSN(ftintrne_w_s, fdfj)
+INSN(ftintrne_w_d, fdfj)
+INSN(ftintrne_l_s, fdfj)
+INSN(ftintrne_l_d, fdfj)
+INSN(ftint_w_s, fdfj)
+INSN(ftint_w_d, fdfj)
+INSN(ftint_l_s, fdfj)
+INSN(ftint_l_d, fdfj)
+INSN(ffint_s_w, fdfj)
+INSN(ffint_s_l, fdfj)
+INSN(ffint_d_w, fdfj)
+INSN(ffint_d_l, fdfj)
+INSN(frint_s, fdfj)
+INSN(frint_d, fdfj)
+INSN(slti, rdrjsi12)
+INSN(sltui, rdrjsi12)
+INSN(addi_w, rdrjsi12)
+INSN(addi_d, rdrjsi12)
+INSN(lu52i_d, rdrjsi12)
+INSN(andi, rdrjui12)
+INSN(ori, rdrjui12)
+INSN(xori, rdrjui12)
+INSN(rdtimel_w, rdrj)
+INSN(rdtimeh_w, rdrj)
+INSN(fmadd_s, fdfjfkfa)
+INSN(fmadd_d, fdfjfkfa)
+INSN(fmsub_s, fdfjfkfa)
+INSN(fmsub_d, fdfjfkfa)
+INSN(fnmadd_s, fdfjfkfa)
+INSN(fnmadd_d, fdfjfkfa)
+INSN(fnmsub_s, fdfjfkfa)
+INSN(fnmsub_d, fdfjfkfa)
+INSN(fsel, fdfjfkca)
+INSN(addu16i_d, rdrjsi16)
+INSN(lu12i_w, rdsi20)
+INSN(lu32i_d, rdsi20)
+INSN(pcaddi, rdsi20)
+INSN(pcalau12i, rdsi20)
+INSN(pcaddu12i, rdsi20)
+INSN(pcaddu18i, rdsi20)
+INSN(ll_w, rdrjsi14)
+INSN(sc_w, rdrjsi14)
+INSN(ll_d, rdrjsi14)
+INSN(sc_d, rdrjsi14)
+INSN(ldptr_w, rdrjsi14)
+INSN(stptr_w, rdrjsi14)
+INSN(ldptr_d, rdrjsi14)
+INSN(stptr_d, rdrjsi14)
+INSN(ld_b, rdrjsi12)
+INSN(ld_h, rdrjsi12)
+INSN(ld_w, rdrjsi12)
+INSN(ld_d, rdrjsi12)
+INSN(st_b, rdrjsi12)
+INSN(st_h, rdrjsi12)
+INSN(st_w, rdrjsi12)
+INSN(st_d, rdrjsi12)
+INSN(ld_bu, rdrjsi12)
+INSN(ld_hu, rdrjsi12)
+INSN(ld_wu, rdrjsi12)
+INSN(preld, hintrjsi12)
+INSN(fld_s, fdrjsi12)
+INSN(fst_s, fdrjsi12)
+INSN(fld_d, fdrjsi12)
+INSN(fst_d, fdrjsi12)
+INSN(ldx_b, rdrjrk)
+INSN(ldx_h, rdrjrk)
+INSN(ldx_w, rdrjrk)
+INSN(ldx_d, rdrjrk)
+INSN(stx_b, rdrjrk)
+INSN(stx_h, rdrjrk)
+INSN(stx_w, rdrjrk)
+INSN(stx_d, rdrjrk)
+INSN(ldx_bu, rdrjrk)
+INSN(ldx_hu, rdrjrk)
+INSN(ldx_wu, rdrjrk)
+INSN(fldx_s, fdrjrk)
+INSN(fldx_d, fdrjrk)
+INSN(fstx_s, fdrjrk)
+INSN(fstx_d, fdrjrk)
+INSN(amswap_w, rdrjrk)
+INSN(amswap_d, rdrjrk)
+INSN(amadd_w, rdrjrk)
+INSN(amadd_d, rdrjrk)
+INSN(amand_w, rdrjrk)
+INSN(amand_d, rdrjrk)
+INSN(amor_w, rdrjrk)
+INSN(amor_d, rdrjrk)
+INSN(amxor_w, rdrjrk)
+INSN(amxor_d, rdrjrk)
+INSN(ammax_w, rdrjrk)
+INSN(ammax_d, rdrjrk)
+INSN(ammin_w, rdrjrk)
+INSN(ammin_d, rdrjrk)
+INSN(ammax_wu, rdrjrk)
+INSN(ammax_du, rdrjrk)
+INSN(ammin_wu, rdrjrk)
+INSN(ammin_du, rdrjrk)
+INSN(amswap_db_w, rdrjrk)
+INSN(amswap_db_d, rdrjrk)
+INSN(amadd_db_w, rdrjrk)
+INSN(amadd_db_d, rdrjrk)
+INSN(amand_db_w, rdrjrk)
+INSN(amand_db_d, rdrjrk)
+INSN(amor_db_w, rdrjrk)
+INSN(amor_db_d, rdrjrk)
+INSN(amxor_db_w, rdrjrk)
+INSN(amxor_db_d, rdrjrk)
+INSN(ammax_db_w, rdrjrk)
+INSN(ammax_db_d, rdrjrk)
+INSN(ammin_db_w, rdrjrk)
+INSN(ammin_db_d, rdrjrk)
+INSN(ammax_db_wu, rdrjrk)
+INSN(ammax_db_du, rdrjrk)
+INSN(ammin_db_wu, rdrjrk)
+INSN(ammin_db_du, rdrjrk)
+INSN(dbar, whint)
+INSN(ibar, whint)
+INSN(fldgt_s, fdrjrk)
+INSN(fldgt_d, fdrjrk)
+INSN(fldle_s, fdrjrk)
+INSN(fldle_d, fdrjrk)
+INSN(fstgt_s, fdrjrk)
+INSN(fstgt_d, fdrjrk)
+INSN(fstle_s, fdrjrk)
+INSN(fstle_d, fdrjrk)
+INSN(ldgt_b, rdrjrk)
+INSN(ldgt_h, rdrjrk)
+INSN(ldgt_w, rdrjrk)
+INSN(ldgt_d, rdrjrk)
+INSN(ldle_b, rdrjrk)
+INSN(ldle_h, rdrjrk)
+INSN(ldle_w, rdrjrk)
+INSN(ldle_d, rdrjrk)
+INSN(stgt_b, rdrjrk)
+INSN(stgt_h, rdrjrk)
+INSN(stgt_w, rdrjrk)
+INSN(stgt_d, rdrjrk)
+INSN(stle_b, rdrjrk)
+INSN(stle_h, rdrjrk)
+INSN(stle_w, rdrjrk)
+INSN(stle_d, rdrjrk)
+INSN(beqz, rjoffs21)
+INSN(bnez, rjoffs21)
+INSN(bceqz, cjoffs21)
+INSN(bcnez, cjoffs21)
+INSN(jirl, rdrjoffs16)
+INSN(b, offs)
+INSN(bl, offs)
+INSN(beq, rjrdoffs16)
+INSN(bne, rjrdoffs16)
+INSN(blt, rjrdoffs16)
+INSN(bge, rjrdoffs16)
+INSN(bltu, rjrdoffs16)
+INSN(bgeu, rjrdoffs16)
+
+#define output_fcmp(C, PREFIX, SUBFFIX) \
+{ \
+ (C)->info->fprintf_func((C)->info->stream, "%08x %s%s\t%s, %s, %s", \
+ (C)->insn, PREFIX, SUBFFIX, fccregnames[a->cd], \
+ fregnames[a->fj], fregnames[a->fk]); \
+}
+
+static void output_cdfjfkfcond(DisasContext *ctx, arg_fmt_cdfjfkfcond * a,
+ const char *suffix)
+{
+ switch (a->fcond) {
+ case 0x0:
+ output_fcmp(ctx, "fcmp_caf_", suffix);
+ break;
+ case 0x1:
+ output_fcmp(ctx, "fcmp_saf_", suffix);
+ break;
+ case 0x2:
+ output_fcmp(ctx, "fcmp_clt_", suffix);
+ break;
+ case 0x3:
+ output_fcmp(ctx, "fcmp_slt_", suffix);
+ break;
+ case 0x4:
+ output_fcmp(ctx, "fcmp_ceq_", suffix);
+ break;
+ case 0x5:
+ output_fcmp(ctx, "fcmp_seq_", suffix);
+ break;
+ case 0x6:
+ output_fcmp(ctx, "fcmp_cle_", suffix);
+ break;
+ case 0x7:
+ output_fcmp(ctx, "fcmp_sle_", suffix);
+ break;
+ case 0x8:
+ output_fcmp(ctx, "fcmp_cun_", suffix);
+ break;
+ case 0x9:
+ output_fcmp(ctx, "fcmp_sun_", suffix);
+ break;
+ case 0xA:
+ output_fcmp(ctx, "fcmp_cult_", suffix);
+ break;
+ case 0xB:
+ output_fcmp(ctx, "fcmp_sult_", suffix);
+ break;
+ case 0xC:
+ output_fcmp(ctx, "fcmp_cueq_", suffix);
+ break;
+ case 0xD:
+ output_fcmp(ctx, "fcmp_sueq_", suffix);
+ break;
+ case 0xE:
+ output_fcmp(ctx, "fcmp_cule_", suffix);
+ break;
+ case 0xF:
+ output_fcmp(ctx, "fcmp_sule_", suffix);
+ break;
+ case 0x10:
+ output_fcmp(ctx, "fcmp_cne_", suffix);
+ break;
+ case 0x11:
+ output_fcmp(ctx, "fcmp_sne_", suffix);
+ break;
+ case 0x14:
+ output_fcmp(ctx, "fcmp_cor_", suffix);
+ break;
+ case 0x15:
+ output_fcmp(ctx, "fcmp_sor_", suffix);
+ break;
+ case 0x18:
+ output_fcmp(ctx, "fcmp_cune_", suffix);
+ break;
+ case 0x19:
+ output_fcmp(ctx, "fcmp_sune_", suffix);
+ break;
+ default:
+ break;
+ }
+}
+
+#define FCMP_INSN(insn, suffix, type) \
+static bool trans_##insn(DisasContext *ctx, arg_fmt_##type * a) \
+{ \
+ output_##type(ctx, a, #suffix); \
+ return true; \
+}
+
+FCMP_INSN(fcmp_cond_s, s, cdfjfkfcond)
+FCMP_INSN(fcmp_cond_d, d, cdfjfkfcond)
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 17/26] linux-user: Add LoongArch generic header files
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (15 preceding siblings ...)
2021-11-12 6:53 ` [PATCH v10 16/26] target/loongarch: Add disassembler Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-16 8:33 ` Philippe Mathieu-Daudé
2021-11-12 6:54 ` [PATCH v10 18/26] linux-user: Add LoongArch specific structures Song Gao
` (8 subsequent siblings)
25 siblings, 1 reply; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This includes:
- sockbits.h
- target_errno_defs.h
- target_fcntl.h
- termbits.h
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
---
linux-user/loongarch64/sockbits.h | 1 +
linux-user/loongarch64/target_errno_defs.h | 7 +++++++
linux-user/loongarch64/target_fcntl.h | 6 ++++++
linux-user/loongarch64/termbits.h | 1 +
4 files changed, 15 insertions(+)
create mode 100644 linux-user/loongarch64/sockbits.h
create mode 100644 linux-user/loongarch64/target_errno_defs.h
create mode 100644 linux-user/loongarch64/target_fcntl.h
create mode 100644 linux-user/loongarch64/termbits.h
diff --git a/linux-user/loongarch64/sockbits.h b/linux-user/loongarch64/sockbits.h
new file mode 100644
index 0000000..0e4c8f0
--- /dev/null
+++ b/linux-user/loongarch64/sockbits.h
@@ -0,0 +1 @@
+#include "../generic/sockbits.h"
diff --git a/linux-user/loongarch64/target_errno_defs.h b/linux-user/loongarch64/target_errno_defs.h
new file mode 100644
index 0000000..17165c1
--- /dev/null
+++ b/linux-user/loongarch64/target_errno_defs.h
@@ -0,0 +1,7 @@
+#ifndef LOONGARCH_TARGET_ERRNO_DEFS_H
+#define LOONGARCH_TARGET_ERRNO_DEFS_H
+
+/* Target uses generic errno */
+#include "../generic/target_errno_defs.h"
+
+#endif
diff --git a/linux-user/loongarch64/target_fcntl.h b/linux-user/loongarch64/target_fcntl.h
new file mode 100644
index 0000000..9fa3c99
--- /dev/null
+++ b/linux-user/loongarch64/target_fcntl.h
@@ -0,0 +1,6 @@
+#ifndef LOONGARCH_TARGET_FCNTL_H
+#define LOONGARCH_TARGET_FCNTL_H
+
+#include "../generic/fcntl.h"
+
+#endif /* LOONGARCH_TARGET_FCNTL_H */
diff --git a/linux-user/loongarch64/termbits.h b/linux-user/loongarch64/termbits.h
new file mode 100644
index 0000000..b1d4f4f
--- /dev/null
+++ b/linux-user/loongarch64/termbits.h
@@ -0,0 +1 @@
+#include "../generic/termbits.h"
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 18/26] linux-user: Add LoongArch specific structures
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (16 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 17/26] linux-user: Add LoongArch generic header files Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 19/26] linux-user: Add LoongArch signal support Song Gao
` (7 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
---
linux-user/loongarch64/target_structs.h | 48 +++++++++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 linux-user/loongarch64/target_structs.h
diff --git a/linux-user/loongarch64/target_structs.h b/linux-user/loongarch64/target_structs.h
new file mode 100644
index 0000000..cc7928a
--- /dev/null
+++ b/linux-user/loongarch64/target_structs.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch specific structures for linux-user
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_TARGET_STRUCTS_H
+#define LOONGARCH_TARGET_STRUCTS_H
+
+struct target_ipc_perm {
+ abi_int __key; /* Key. */
+ abi_uint uid; /* Owner's user ID. */
+ abi_uint gid; /* Owner's group ID. */
+ abi_uint cuid; /* Creator's user ID. */
+ abi_uint cgid; /* Creator's group ID. */
+ abi_uint mode; /* Read/write permission. */
+ abi_ushort __seq; /* Sequence number. */
+ abi_ushort __pad1;
+ abi_ulong __unused1;
+ abi_ulong __unused2;
+};
+
+struct target_shmid_ds {
+ struct target_ipc_perm shm_perm; /* operation permission struct */
+ abi_long shm_segsz; /* size of segment in bytes */
+ abi_ulong shm_atime; /* time of last shmat() */
+ abi_ulong shm_dtime; /* time of last shmdt() */
+ abi_ulong shm_ctime; /* time of last change by shmctl() */
+ abi_int shm_cpid; /* pid of creator */
+ abi_int shm_lpid; /* pid of last shmop */
+ abi_ulong shm_nattch; /* number of current attaches */
+ abi_ulong __unused1;
+ abi_ulong __unused2;
+};
+
+#define TARGET_SEMID64_DS
+
+struct target_semid64_ds {
+ struct target_ipc_perm sem_perm;
+ abi_ulong sem_otime;
+ abi_ulong sem_ctime;
+ abi_ulong sem_nsems;
+ abi_ulong __unused1;
+ abi_ulong __unused2;
+};
+
+#endif
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 19/26] linux-user: Add LoongArch signal support
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (17 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 18/26] linux-user: Add LoongArch specific structures Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 20/26] linux-user: Add LoongArch elf support Song Gao
` (6 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
---
linux-user/loongarch64/signal.c | 162 +++++++++++++++++++++++++++++++++
linux-user/loongarch64/target_signal.h | 29 ++++++
2 files changed, 191 insertions(+)
create mode 100644 linux-user/loongarch64/signal.c
create mode 100644 linux-user/loongarch64/target_signal.h
diff --git a/linux-user/loongarch64/signal.c b/linux-user/loongarch64/signal.c
new file mode 100644
index 0000000..8fbc827
--- /dev/null
+++ b/linux-user/loongarch64/signal.c
@@ -0,0 +1,162 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch emulation of Linux signals
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu.h"
+#include "signal-common.h"
+#include "user-internals.h"
+#include "linux-user/trace.h"
+
+struct target_sigcontext {
+ uint64_t sc_pc;
+ uint64_t sc_gpr[32];
+ uint64_t sc_fpr[32];
+ uint64_t sc_fcc;
+ uint32_t sc_fcsr;
+ uint32_t sc_flags;
+};
+
+struct target_ucontext {
+ target_ulong tuc_flags;
+ target_ulong tuc_link;
+ target_stack_t tuc_stack;
+ target_ulong pad0;
+ struct target_sigcontext tuc_mcontext;
+ target_sigset_t tuc_sigmask;
+};
+
+struct target_rt_sigframe {
+ struct target_siginfo rs_info;
+ struct target_ucontext rs_uc;
+};
+
+static inline void setup_sigcontext(CPULoongArchState *env,
+ struct target_sigcontext *sc)
+{
+ int i;
+
+ __put_user(env->pc, &sc->sc_pc);
+
+ __put_user(0, &sc->sc_gpr[0]);
+ for (i = 1; i < 32; ++i) {
+ __put_user(env->gpr[i], &sc->sc_gpr[i]);
+ }
+
+ for (i = 0; i < 32; ++i) {
+ __put_user(env->fpr[i], &sc->sc_fpr[i]);
+ }
+}
+
+static inline void
+restore_sigcontext(CPULoongArchState *env, struct target_sigcontext *sc)
+{
+ int i;
+
+ __get_user(env->pc, &sc->sc_pc);
+
+ for (i = 1; i < 32; ++i) {
+ __get_user(env->gpr[i], &sc->sc_gpr[i]);
+ }
+
+ for (i = 0; i < 32; ++i) {
+ __get_user(env->fpr[i], &sc->sc_fpr[i]);
+ }
+}
+
+/*
+ * Determine which stack to use..
+ */
+static inline abi_ulong
+get_sigframe(struct target_sigaction *ka, CPULoongArchState *env,
+ size_t frame_size)
+{
+ unsigned long sp;
+
+ sp = target_sigsp(get_sp_from_cpustate(env) - 32, ka);
+
+ return (sp - frame_size) & ~7;
+}
+
+void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPULoongArchState *env)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof(*frame));
+ trace_user_setup_rt_frame(env, frame_addr);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) {
+ goto give_sigsegv;
+ }
+
+ tswap_siginfo(&frame->rs_info, info);
+
+ __put_user(0, &frame->rs_uc.tuc_flags);
+ __put_user(0, &frame->rs_uc.tuc_link);
+ target_save_altstack(&frame->rs_uc.tuc_stack, env);
+
+ setup_sigcontext(env, &frame->rs_uc.tuc_mcontext);
+
+ for (i = 0; i < TARGET_NSIG_WORDS; i++) {
+ __put_user(set->sig[i], &frame->rs_uc.tuc_sigmask.sig[i]);
+ }
+
+ env->gpr[4] = sig;
+ env->gpr[5] = frame_addr + offsetof(struct target_rt_sigframe, rs_info);
+ env->gpr[6] = frame_addr + offsetof(struct target_rt_sigframe, rs_uc);
+ env->gpr[3] = frame_addr;
+ env->gpr[1] = default_rt_sigreturn;
+
+ env->pc = env->gpr[20] = ka->_sa_handler;
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sigsegv(sig);
+}
+
+long do_rt_sigreturn(CPULoongArchState *env)
+{
+ struct target_rt_sigframe *frame;
+ abi_ulong frame_addr;
+ sigset_t blocked;
+
+ frame_addr = env->gpr[3];
+ trace_user_do_rt_sigreturn(env, frame_addr);
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) {
+ goto badframe;
+ }
+
+ target_to_host_sigset(&blocked, &frame->rs_uc.tuc_sigmask);
+ set_sigmask(&blocked);
+
+ restore_sigcontext(env, &frame->rs_uc.tuc_mcontext);
+ target_restore_altstack(&frame->rs_uc.tuc_stack, env);
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return -TARGET_QEMU_ESIGRETURN;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return -TARGET_QEMU_ESIGRETURN;
+}
+
+void setup_sigtramp(abi_ulong sigtramp_page)
+{
+ uint32_t *tramp = lock_user(VERIFY_WRITE, sigtramp_page, 8, 0);
+ assert(tramp != NULL);
+
+ __put_user(0x03822c0b, tramp + 0); /* ori a7, a7, 0x8b */
+ __put_user(0x002b0000, tramp + 1); /* syscall 0 */
+
+ default_rt_sigreturn = sigtramp_page;
+ unlock_user(tramp, sigtramp_page, 8);
+}
diff --git a/linux-user/loongarch64/target_signal.h b/linux-user/loongarch64/target_signal.h
new file mode 100644
index 0000000..c5f467b
--- /dev/null
+++ b/linux-user/loongarch64/target_signal.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_TARGET_SIGNAL_H
+#define LOONGARCH_TARGET_SIGNAL_H
+
+/* this struct defines a stack used during syscall handling */
+typedef struct target_sigaltstack {
+ abi_long ss_sp;
+ abi_int ss_flags;
+ abi_ulong ss_size;
+} target_stack_t;
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK 1
+#define TARGET_SS_DISABLE 2
+
+#define TARGET_MINSIGSTKSZ 2048
+#define TARGET_SIGSTKSZ 8192
+
+#include "../generic/signal.h"
+
+#define TARGET_ARCH_HAS_SIGTRAMP_PAGE 1
+
+#endif /* LOONGARCH_TARGET_SIGNAL_H */
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 20/26] linux-user: Add LoongArch elf support
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (18 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 19/26] linux-user: Add LoongArch signal support Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 21/26] linux-user: Add LoongArch syscall support Song Gao
` (5 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
---
include/elf.h | 2 ++
linux-user/elfload.c | 58 +++++++++++++++++++++++++++++++++++++
linux-user/loongarch64/target_elf.h | 12 ++++++++
3 files changed, 72 insertions(+)
create mode 100644 linux-user/loongarch64/target_elf.h
diff --git a/include/elf.h b/include/elf.h
index 811bf4a..3a4bcb6 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -182,6 +182,8 @@ typedef struct mips_elf_abiflags_v0 {
#define EM_NANOMIPS 249 /* Wave Computing nanoMIPS */
+#define EM_LOONGARCH 258 /* LoongArch */
+
/*
* This is an interim value that we will use until the committee comes
* up with a final number.
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 5da8c02..7827e25 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -914,6 +914,64 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUPPCState *en
#endif
+#ifdef TARGET_LOONGARCH64
+
+#define ELF_START_MMAP 0x80000000
+
+#define ELF_CLASS ELFCLASS64
+#define ELF_ARCH EM_LOONGARCH
+
+#define elf_check_arch(x) ((x) == EM_LOONGARCH)
+static inline void init_thread(struct target_pt_regs *regs,
+ struct image_info *infop)
+{
+ regs->csr_crmd = 2 << 3;
+ regs->csr_era = infop->entry;
+ regs->regs[3] = infop->start_stack;
+}
+
+/* See linux kernel: arch/loongarch/include/asm/elf.h. */
+#define ELF_NREG 45
+typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG];
+
+/* See linux kernel: arch/loongarch/include/asm/reg.h. */
+enum {
+ TARGET_EF_R0 = 0,
+ TARGET_EF_CSR_ERA = TARGET_EF_R0 + 32,
+ TARGET_EF_CSR_BADVADDR = TARGET_EF_R0 + 33,
+};
+
+/* See linux kernel: arch/loongarch/kernel/process.c:loongarch_dump_regs64. */
+static void elf_core_copy_regs(target_elf_gregset_t *regs,
+ const CPULoongArchState *env)
+{
+ int i;
+
+ for (i = 0; i < TARGET_EF_R0; i++) {
+ (*regs)[i] = 0;
+ }
+ (*regs)[TARGET_EF_R0] = 0;
+
+ for (i = 1; i < ARRAY_SIZE(env->gpr); i++) {
+ (*regs)[TARGET_EF_R0 + i] = tswapreg(env->gpr[i]);
+ }
+
+ (*regs)[TARGET_EF_CSR_ERA] = tswapreg(env->pc);
+ (*regs)[TARGET_EF_CSR_BADVADDR] = tswapreg(env->badaddr);
+}
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE 4096
+
+#define ELF_HWCAP get_elf_hwcap()
+
+static uint32_t get_elf_hwcap(void)
+{
+ return 0;
+}
+
+#endif /* TARGET_LOONGARCH64 */
+
#ifdef TARGET_MIPS
#define ELF_START_MMAP 0x80000000
diff --git a/linux-user/loongarch64/target_elf.h b/linux-user/loongarch64/target_elf.h
new file mode 100644
index 0000000..3c690bb
--- /dev/null
+++ b/linux-user/loongarch64/target_elf.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_TARGET_ELF_H
+#define LOONGARCH_TARGET_ELF_H
+static inline const char *cpu_get_model(uint32_t eflags)
+{
+ return "Loongson-3A5000";
+}
+#endif
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 21/26] linux-user: Add LoongArch syscall support
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (19 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 20/26] linux-user: Add LoongArch elf support Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 22/26] linux-user: Add LoongArch cpu_loop support Song Gao
` (4 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
We should disable '__BITS_PER_LONG' at [1] before run gensyscalls.sh
[1] arch/loongarch/include/uapi/asm/bitsperlong.h
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
---
linux-user/loongarch64/syscall_nr.h | 312 ++++++++++++++++++++++++++++++++
linux-user/loongarch64/target_syscall.h | 45 +++++
linux-user/syscall_defs.h | 10 +-
scripts/gensyscalls.sh | 1 +
4 files changed, 364 insertions(+), 4 deletions(-)
create mode 100644 linux-user/loongarch64/syscall_nr.h
create mode 100644 linux-user/loongarch64/target_syscall.h
diff --git a/linux-user/loongarch64/syscall_nr.h b/linux-user/loongarch64/syscall_nr.h
new file mode 100644
index 0000000..8fbf287
--- /dev/null
+++ b/linux-user/loongarch64/syscall_nr.h
@@ -0,0 +1,312 @@
+/*
+ * This file contains the system call numbers.
+ * Do not modify.
+ * This file is generated by scripts/gensyscalls.sh
+ */
+#ifndef LINUX_USER_LOONGARCH_SYSCALL_NR_H
+#define LINUX_USER_LOONGARCH_SYSCALL_NR_H
+
+#define TARGET_NR_io_setup 0
+#define TARGET_NR_io_destroy 1
+#define TARGET_NR_io_submit 2
+#define TARGET_NR_io_cancel 3
+#define TARGET_NR_io_getevents 4
+#define TARGET_NR_setxattr 5
+#define TARGET_NR_lsetxattr 6
+#define TARGET_NR_fsetxattr 7
+#define TARGET_NR_getxattr 8
+#define TARGET_NR_lgetxattr 9
+#define TARGET_NR_fgetxattr 10
+#define TARGET_NR_listxattr 11
+#define TARGET_NR_llistxattr 12
+#define TARGET_NR_flistxattr 13
+#define TARGET_NR_removexattr 14
+#define TARGET_NR_lremovexattr 15
+#define TARGET_NR_fremovexattr 16
+#define TARGET_NR_getcwd 17
+#define TARGET_NR_lookup_dcookie 18
+#define TARGET_NR_eventfd2 19
+#define TARGET_NR_epoll_create1 20
+#define TARGET_NR_epoll_ctl 21
+#define TARGET_NR_epoll_pwait 22
+#define TARGET_NR_dup 23
+#define TARGET_NR_dup3 24
+#define TARGET_NR_fcntl 25
+#define TARGET_NR_inotify_init1 26
+#define TARGET_NR_inotify_add_watch 27
+#define TARGET_NR_inotify_rm_watch 28
+#define TARGET_NR_ioctl 29
+#define TARGET_NR_ioprio_set 30
+#define TARGET_NR_ioprio_get 31
+#define TARGET_NR_flock 32
+#define TARGET_NR_mknodat 33
+#define TARGET_NR_mkdirat 34
+#define TARGET_NR_unlinkat 35
+#define TARGET_NR_symlinkat 36
+#define TARGET_NR_linkat 37
+#define TARGET_NR_umount2 39
+#define TARGET_NR_mount 40
+#define TARGET_NR_pivot_root 41
+#define TARGET_NR_nfsservctl 42
+#define TARGET_NR_statfs 43
+#define TARGET_NR_fstatfs 44
+#define TARGET_NR_truncate 45
+#define TARGET_NR_ftruncate 46
+#define TARGET_NR_fallocate 47
+#define TARGET_NR_faccessat 48
+#define TARGET_NR_chdir 49
+#define TARGET_NR_fchdir 50
+#define TARGET_NR_chroot 51
+#define TARGET_NR_fchmod 52
+#define TARGET_NR_fchmodat 53
+#define TARGET_NR_fchownat 54
+#define TARGET_NR_fchown 55
+#define TARGET_NR_openat 56
+#define TARGET_NR_close 57
+#define TARGET_NR_vhangup 58
+#define TARGET_NR_pipe2 59
+#define TARGET_NR_quotactl 60
+#define TARGET_NR_getdents64 61
+#define TARGET_NR_lseek 62
+#define TARGET_NR_read 63
+#define TARGET_NR_write 64
+#define TARGET_NR_readv 65
+#define TARGET_NR_writev 66
+#define TARGET_NR_pread64 67
+#define TARGET_NR_pwrite64 68
+#define TARGET_NR_preadv 69
+#define TARGET_NR_pwritev 70
+#define TARGET_NR_sendfile 71
+#define TARGET_NR_pselect6 72
+#define TARGET_NR_ppoll 73
+#define TARGET_NR_signalfd4 74
+#define TARGET_NR_vmsplice 75
+#define TARGET_NR_splice 76
+#define TARGET_NR_tee 77
+#define TARGET_NR_readlinkat 78
+#define TARGET_NR_newfstatat 79
+#define TARGET_NR_fstat 80
+#define TARGET_NR_sync 81
+#define TARGET_NR_fsync 82
+#define TARGET_NR_fdatasync 83
+#define TARGET_NR_sync_file_range 84
+#define TARGET_NR_timerfd_create 85
+#define TARGET_NR_timerfd_settime 86
+#define TARGET_NR_timerfd_gettime 87
+#define TARGET_NR_utimensat 88
+#define TARGET_NR_acct 89
+#define TARGET_NR_capget 90
+#define TARGET_NR_capset 91
+#define TARGET_NR_personality 92
+#define TARGET_NR_exit 93
+#define TARGET_NR_exit_group 94
+#define TARGET_NR_waitid 95
+#define TARGET_NR_set_tid_address 96
+#define TARGET_NR_unshare 97
+#define TARGET_NR_futex 98
+#define TARGET_NR_set_robust_list 99
+#define TARGET_NR_get_robust_list 100
+#define TARGET_NR_nanosleep 101
+#define TARGET_NR_getitimer 102
+#define TARGET_NR_setitimer 103
+#define TARGET_NR_kexec_load 104
+#define TARGET_NR_init_module 105
+#define TARGET_NR_delete_module 106
+#define TARGET_NR_timer_create 107
+#define TARGET_NR_timer_gettime 108
+#define TARGET_NR_timer_getoverrun 109
+#define TARGET_NR_timer_settime 110
+#define TARGET_NR_timer_delete 111
+#define TARGET_NR_clock_settime 112
+#define TARGET_NR_clock_gettime 113
+#define TARGET_NR_clock_getres 114
+#define TARGET_NR_clock_nanosleep 115
+#define TARGET_NR_syslog 116
+#define TARGET_NR_ptrace 117
+#define TARGET_NR_sched_setparam 118
+#define TARGET_NR_sched_setscheduler 119
+#define TARGET_NR_sched_getscheduler 120
+#define TARGET_NR_sched_getparam 121
+#define TARGET_NR_sched_setaffinity 122
+#define TARGET_NR_sched_getaffinity 123
+#define TARGET_NR_sched_yield 124
+#define TARGET_NR_sched_get_priority_max 125
+#define TARGET_NR_sched_get_priority_min 126
+#define TARGET_NR_sched_rr_get_interval 127
+#define TARGET_NR_restart_syscall 128
+#define TARGET_NR_kill 129
+#define TARGET_NR_tkill 130
+#define TARGET_NR_tgkill 131
+#define TARGET_NR_sigaltstack 132
+#define TARGET_NR_rt_sigsuspend 133
+#define TARGET_NR_rt_sigaction 134
+#define TARGET_NR_rt_sigprocmask 135
+#define TARGET_NR_rt_sigpending 136
+#define TARGET_NR_rt_sigtimedwait 137
+#define TARGET_NR_rt_sigqueueinfo 138
+#define TARGET_NR_rt_sigreturn 139
+#define TARGET_NR_setpriority 140
+#define TARGET_NR_getpriority 141
+#define TARGET_NR_reboot 142
+#define TARGET_NR_setregid 143
+#define TARGET_NR_setgid 144
+#define TARGET_NR_setreuid 145
+#define TARGET_NR_setuid 146
+#define TARGET_NR_setresuid 147
+#define TARGET_NR_getresuid 148
+#define TARGET_NR_setresgid 149
+#define TARGET_NR_getresgid 150
+#define TARGET_NR_setfsuid 151
+#define TARGET_NR_setfsgid 152
+#define TARGET_NR_times 153
+#define TARGET_NR_setpgid 154
+#define TARGET_NR_getpgid 155
+#define TARGET_NR_getsid 156
+#define TARGET_NR_setsid 157
+#define TARGET_NR_getgroups 158
+#define TARGET_NR_setgroups 159
+#define TARGET_NR_uname 160
+#define TARGET_NR_sethostname 161
+#define TARGET_NR_setdomainname 162
+#define TARGET_NR_getrusage 165
+#define TARGET_NR_umask 166
+#define TARGET_NR_prctl 167
+#define TARGET_NR_getcpu 168
+#define TARGET_NR_gettimeofday 169
+#define TARGET_NR_settimeofday 170
+#define TARGET_NR_adjtimex 171
+#define TARGET_NR_getpid 172
+#define TARGET_NR_getppid 173
+#define TARGET_NR_getuid 174
+#define TARGET_NR_geteuid 175
+#define TARGET_NR_getgid 176
+#define TARGET_NR_getegid 177
+#define TARGET_NR_gettid 178
+#define TARGET_NR_sysinfo 179
+#define TARGET_NR_mq_open 180
+#define TARGET_NR_mq_unlink 181
+#define TARGET_NR_mq_timedsend 182
+#define TARGET_NR_mq_timedreceive 183
+#define TARGET_NR_mq_notify 184
+#define TARGET_NR_mq_getsetattr 185
+#define TARGET_NR_msgget 186
+#define TARGET_NR_msgctl 187
+#define TARGET_NR_msgrcv 188
+#define TARGET_NR_msgsnd 189
+#define TARGET_NR_semget 190
+#define TARGET_NR_semctl 191
+#define TARGET_NR_semtimedop 192
+#define TARGET_NR_semop 193
+#define TARGET_NR_shmget 194
+#define TARGET_NR_shmctl 195
+#define TARGET_NR_shmat 196
+#define TARGET_NR_shmdt 197
+#define TARGET_NR_socket 198
+#define TARGET_NR_socketpair 199
+#define TARGET_NR_bind 200
+#define TARGET_NR_listen 201
+#define TARGET_NR_accept 202
+#define TARGET_NR_connect 203
+#define TARGET_NR_getsockname 204
+#define TARGET_NR_getpeername 205
+#define TARGET_NR_sendto 206
+#define TARGET_NR_recvfrom 207
+#define TARGET_NR_setsockopt 208
+#define TARGET_NR_getsockopt 209
+#define TARGET_NR_shutdown 210
+#define TARGET_NR_sendmsg 211
+#define TARGET_NR_recvmsg 212
+#define TARGET_NR_readahead 213
+#define TARGET_NR_brk 214
+#define TARGET_NR_munmap 215
+#define TARGET_NR_mremap 216
+#define TARGET_NR_add_key 217
+#define TARGET_NR_request_key 218
+#define TARGET_NR_keyctl 219
+#define TARGET_NR_clone 220
+#define TARGET_NR_execve 221
+#define TARGET_NR_mmap 222
+#define TARGET_NR_fadvise64 223
+#define TARGET_NR_swapon 224
+#define TARGET_NR_swapoff 225
+#define TARGET_NR_mprotect 226
+#define TARGET_NR_msync 227
+#define TARGET_NR_mlock 228
+#define TARGET_NR_munlock 229
+#define TARGET_NR_mlockall 230
+#define TARGET_NR_munlockall 231
+#define TARGET_NR_mincore 232
+#define TARGET_NR_madvise 233
+#define TARGET_NR_remap_file_pages 234
+#define TARGET_NR_mbind 235
+#define TARGET_NR_get_mempolicy 236
+#define TARGET_NR_set_mempolicy 237
+#define TARGET_NR_migrate_pages 238
+#define TARGET_NR_move_pages 239
+#define TARGET_NR_rt_tgsigqueueinfo 240
+#define TARGET_NR_perf_event_open 241
+#define TARGET_NR_accept4 242
+#define TARGET_NR_recvmmsg 243
+#define TARGET_NR_arch_specific_syscall 244
+#define TARGET_NR_wait4 260
+#define TARGET_NR_prlimit64 261
+#define TARGET_NR_fanotify_init 262
+#define TARGET_NR_fanotify_mark 263
+#define TARGET_NR_name_to_handle_at 264
+#define TARGET_NR_open_by_handle_at 265
+#define TARGET_NR_clock_adjtime 266
+#define TARGET_NR_syncfs 267
+#define TARGET_NR_setns 268
+#define TARGET_NR_sendmmsg 269
+#define TARGET_NR_process_vm_readv 270
+#define TARGET_NR_process_vm_writev 271
+#define TARGET_NR_kcmp 272
+#define TARGET_NR_finit_module 273
+#define TARGET_NR_sched_setattr 274
+#define TARGET_NR_sched_getattr 275
+#define TARGET_NR_renameat2 276
+#define TARGET_NR_seccomp 277
+#define TARGET_NR_getrandom 278
+#define TARGET_NR_memfd_create 279
+#define TARGET_NR_bpf 280
+#define TARGET_NR_execveat 281
+#define TARGET_NR_userfaultfd 282
+#define TARGET_NR_membarrier 283
+#define TARGET_NR_mlock2 284
+#define TARGET_NR_copy_file_range 285
+#define TARGET_NR_preadv2 286
+#define TARGET_NR_pwritev2 287
+#define TARGET_NR_pkey_mprotect 288
+#define TARGET_NR_pkey_alloc 289
+#define TARGET_NR_pkey_free 290
+#define TARGET_NR_statx 291
+#define TARGET_NR_io_pgetevents 292
+#define TARGET_NR_rseq 293
+#define TARGET_NR_kexec_file_load 294
+#define TARGET_NR_pidfd_send_signal 424
+#define TARGET_NR_io_uring_setup 425
+#define TARGET_NR_io_uring_enter 426
+#define TARGET_NR_io_uring_register 427
+#define TARGET_NR_open_tree 428
+#define TARGET_NR_move_mount 429
+#define TARGET_NR_fsopen 430
+#define TARGET_NR_fsconfig 431
+#define TARGET_NR_fsmount 432
+#define TARGET_NR_fspick 433
+#define TARGET_NR_pidfd_open 434
+#define TARGET_NR_clone3 435
+#define TARGET_NR_close_range 436
+#define TARGET_NR_openat2 437
+#define TARGET_NR_pidfd_getfd 438
+#define TARGET_NR_faccessat2 439
+#define TARGET_NR_process_madvise 440
+#define TARGET_NR_epoll_pwait2 441
+#define TARGET_NR_mount_setattr 442
+#define TARGET_NR_quotactl_fd 443
+#define TARGET_NR_landlock_create_ruleset 444
+#define TARGET_NR_landlock_add_rule 445
+#define TARGET_NR_landlock_restrict_self 446
+#define TARGET_NR_process_mrelease 448
+#define TARGET_NR_syscalls 449
+
+#endif /* LINUX_USER_LOONGARCH_SYSCALL_NR_H */
diff --git a/linux-user/loongarch64/target_syscall.h b/linux-user/loongarch64/target_syscall.h
new file mode 100644
index 0000000..b1d2a39
--- /dev/null
+++ b/linux-user/loongarch64/target_syscall.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_TARGET_SYSCALL_H
+#define LOONGARCH_TARGET_SYSCALL_H
+
+/*
+ * this struct defines the way the registers are stored on the
+ * stack during a system call.
+ */
+
+struct target_pt_regs {
+ /* Saved main processor registers. */
+ target_ulong regs[32];
+
+ /* Saved special registers. */
+ target_ulong csr_crmd;
+ target_ulong csr_prmd;
+ target_ulong csr_euen;
+ target_ulong csr_ecfg;
+ target_ulong csr_estat;
+ target_ulong csr_era;
+ target_ulong csr_badvaddr;
+ target_ulong orig_a0;
+ target_ulong __last[0];
+};
+
+#define UNAME_MACHINE "loongarch64"
+#define UNAME_MINIMUM_RELEASE "5.16.0"
+
+#define TARGET_MINSIGSTKSZ 2048
+#define TARGET_MCL_CURRENT 1
+#define TARGET_MCL_FUTURE 2
+#define TARGET_MCL_ONFAULT 4
+
+#define TARGET_FORCE_SHMLBA
+
+static inline abi_ulong target_shmlba(CPULoongArchState *env)
+{
+ return 0x40000;
+}
+
+#endif
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index a5ce487..bec125f 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -74,7 +74,7 @@
|| defined(TARGET_M68K) || defined(TARGET_CRIS) \
|| defined(TARGET_S390X) || defined(TARGET_OPENRISC) \
|| defined(TARGET_NIOS2) || defined(TARGET_RISCV) \
- || defined(TARGET_XTENSA)
+ || defined(TARGET_XTENSA) || defined(TARGET_LOONGARCH64)
#define TARGET_IOC_SIZEBITS 14
#define TARGET_IOC_DIRBITS 2
@@ -2129,7 +2129,8 @@ struct target_stat64 {
abi_ulong __unused5;
};
-#elif defined(TARGET_OPENRISC) || defined(TARGET_NIOS2) || defined(TARGET_RISCV)
+#elif defined(TARGET_OPENRISC) || defined(TARGET_NIOS2) || \
+ defined(TARGET_RISCV) || defined(TARGET_LOONGARCH64)
/* These are the asm-generic versions of the stat and stat64 structures */
@@ -2157,7 +2158,7 @@ struct target_stat {
unsigned int __unused5;
};
-#if !defined(TARGET_RISCV64)
+#if !defined(TARGET_RISCV64) && !defined(TARGET_LOONGARCH64)
#define TARGET_HAS_STRUCT_STAT64
struct target_stat64 {
uint64_t st_dev;
@@ -2327,7 +2328,8 @@ struct target_statfs64 {
};
#elif (defined(TARGET_PPC64) || defined(TARGET_X86_64) || \
defined(TARGET_SPARC64) || defined(TARGET_AARCH64) || \
- defined(TARGET_RISCV)) && !defined(TARGET_ABI32)
+ defined(TARGET_RISCV) || defined(TARGET_LOONGARCH64)) && \
+ !defined(TARGET_ABI32)
struct target_statfs {
abi_long f_type;
abi_long f_bsize;
diff --git a/scripts/gensyscalls.sh b/scripts/gensyscalls.sh
index 8fb450e..b69e193 100755
--- a/scripts/gensyscalls.sh
+++ b/scripts/gensyscalls.sh
@@ -99,4 +99,5 @@ generate_syscall_nr openrisc 32 "$output/linux-user/openrisc/syscall_nr.h"
generate_syscall_nr riscv 32 "$output/linux-user/riscv/syscall32_nr.h"
generate_syscall_nr riscv 64 "$output/linux-user/riscv/syscall64_nr.h"
generate_syscall_nr hexagon 32 "$output/linux-user/hexagon/syscall_nr.h"
+generate_syscall_nr loongarch 64 "$output/linux-user/loongarch64/syscall_nr.h"
rm -fr "$TMP"
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 22/26] linux-user: Add LoongArch cpu_loop support
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (20 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 21/26] linux-user: Add LoongArch syscall support Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 23/26] default-configs: Add loongarch linux-user support Song Gao
` (3 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
---
configure | 5 ++
linux-user/loongarch64/cpu_loop.c | 97 +++++++++++++++++++++++++++++++++++++
linux-user/loongarch64/target_cpu.h | 34 +++++++++++++
3 files changed, 136 insertions(+)
create mode 100644 linux-user/loongarch64/cpu_loop.c
create mode 100644 linux-user/loongarch64/target_cpu.h
diff --git a/configure b/configure
index 48c2177..9df99f6 100755
--- a/configure
+++ b/configure
@@ -581,6 +581,8 @@ elif check_define __arm__ ; then
cpu="arm"
elif check_define __aarch64__ ; then
cpu="aarch64"
+elif check_define __loongarch64__ ; then
+ cpu="loongarch64"
else
cpu=$(uname -m)
fi
@@ -612,6 +614,9 @@ case "$cpu" in
sparc|sun4[cdmuv])
cpu="sparc"
;;
+ loongarch)
+ cpu="loongarch"
+ ;;
*)
# This will result in either an error or falling back to TCI later
ARCH=unknown
diff --git a/linux-user/loongarch64/cpu_loop.c b/linux-user/loongarch64/cpu_loop.c
new file mode 100644
index 0000000..f211304
--- /dev/null
+++ b/linux-user/loongarch64/cpu_loop.c
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * QEMU LoongArch user cpu_loop.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#include "qemu/osdep.h"
+#include "qemu.h"
+#include "qemu-common.h"
+#include "user-internals.h"
+#include "cpu_loop-common.h"
+#include "signal-common.h"
+
+void cpu_loop(CPULoongArchState *env)
+{
+ CPUState *cs = env_cpu(env);
+ int trapnr, si_code;
+ abi_long ret;
+
+ for (;;) {
+ cpu_exec_start(cs);
+ trapnr = cpu_exec(cs);
+ cpu_exec_end(cs);
+ process_queued_cpu_work(cs);
+
+ switch (trapnr) {
+ case EXCP_INTERRUPT:
+ /* just indicate that signals should be handled asap */
+ break;
+ case EXCP_SYSCALL:
+ env->pc += 4;
+ ret = do_syscall(env, env->gpr[11],
+ env->gpr[4], env->gpr[5],
+ env->gpr[6], env->gpr[7],
+ env->gpr[8], env->gpr[9],
+ -1, -1);
+ if (ret == -TARGET_ERESTARTSYS) {
+ env->pc -= 4;
+ break;
+ }
+ if (ret == -TARGET_QEMU_ESIGRETURN) {
+ /*
+ * Returning from a successful sigreturn syscall.
+ * Avoid clobbering register state.
+ */
+ break;
+ }
+ env->gpr[4] = ret;
+ break;
+ case EXCP_ADE:
+ force_sig_fault(TARGET_SIGSEGV, TARGET_SEGV_MAPERR, env->badaddr);
+ break;
+ case EXCP_INE:
+ force_sig_fault(TARGET_SIGILL, 0, env->pc);
+ break;
+ case EXCP_FPE:
+ si_code = TARGET_FPE_FLTUNK;
+ if (GET_FP_CAUSE(env->fcsr0) & FP_INVALID) {
+ si_code = TARGET_FPE_FLTINV;
+ } else if (GET_FP_CAUSE(env->fcsr0) & FP_DIV0) {
+ si_code = TARGET_FPE_FLTDIV;
+ } else if (GET_FP_CAUSE(env->fcsr0) & FP_OVERFLOW) {
+ si_code = TARGET_FPE_FLTOVF;
+ } else if (GET_FP_CAUSE(env->fcsr0) & FP_UNDERFLOW) {
+ si_code = TARGET_FPE_FLTUND;
+ } else if (GET_FP_CAUSE(env->fcsr0) & FP_INEXACT) {
+ si_code = TARGET_FPE_FLTRES;
+ }
+ force_sig_fault(TARGET_SIGFPE, si_code, env->pc);
+ break;
+ case EXCP_DEBUG:
+ case EXCP_BREAK:
+ force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->pc);
+ break;
+ case EXCP_ATOMIC:
+ cpu_exec_step_atomic(cs);
+ break;
+ default:
+ EXCP_DUMP(env, "qemu: unhandled CPU exception 0x%x - aborting\n",
+ trapnr);
+ exit(EXIT_FAILURE);
+ }
+ process_pending_signals(env);
+ }
+}
+
+void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
+{
+ int i;
+
+ for (i = 0; i < 32; i++) {
+ env->gpr[i] = regs->regs[i];
+ }
+ env->pc = regs->csr_era;
+
+}
diff --git a/linux-user/loongarch64/target_cpu.h b/linux-user/loongarch64/target_cpu.h
new file mode 100644
index 0000000..a29af66
--- /dev/null
+++ b/linux-user/loongarch64/target_cpu.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * LoongArch specific CPU ABI and functions for linux-user
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ */
+
+#ifndef LOONGARCH_TARGET_CPU_H
+#define LOONGARCH_TARGET_CPU_H
+
+static inline void cpu_clone_regs_child(CPULoongArchState *env,
+ target_ulong newsp, unsigned flags)
+{
+ if (newsp) {
+ env->gpr[3] = newsp;
+ }
+ env->gpr[4] = 0;
+}
+
+static inline void cpu_clone_regs_parent(CPULoongArchState *env,
+ unsigned flags)
+{
+}
+
+static inline void cpu_set_tls(CPULoongArchState *env, target_ulong newtls)
+{
+ env->gpr[2] = newtls;
+}
+
+static inline abi_ulong get_sp_from_cpustate(CPULoongArchState *state)
+{
+ return state->gpr[3];
+}
+#endif
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 23/26] default-configs: Add loongarch linux-user support
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (21 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 22/26] linux-user: Add LoongArch cpu_loop support Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 24/26] target/loongarch: Add target build suport Song Gao
` (2 subsequent siblings)
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This patch adds loongarch64 linux-user default configs file.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
configs/targets/loongarch64-linux-user.mak | 3 +++
1 file changed, 3 insertions(+)
create mode 100644 configs/targets/loongarch64-linux-user.mak
diff --git a/configs/targets/loongarch64-linux-user.mak b/configs/targets/loongarch64-linux-user.mak
new file mode 100644
index 0000000..5b0acfa
--- /dev/null
+++ b/configs/targets/loongarch64-linux-user.mak
@@ -0,0 +1,3 @@
+# Default configuration for loongson64-linux-user
+TARGET_ARCH=loongarch64
+TARGET_BASE_ARCH=loongarch
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 24/26] target/loongarch: Add target build suport
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (22 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 23/26] default-configs: Add loongarch linux-user support Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 25/26] target/loongarch: 'make check-tcg' support Song Gao
2021-11-12 6:54 ` [PATCH v10 26/26] scripts: add loongarch64 binfmt config Song Gao
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
This patch adds build loongarch-linux-user target support.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
meson.build | 2 +-
target/loongarch/meson.build | 19 +++++++++++++++++++
target/meson.build | 1 +
3 files changed, 21 insertions(+), 1 deletion(-)
create mode 100644 target/loongarch/meson.build
diff --git a/meson.build b/meson.build
index 1ebd641..8b4beaf 100644
--- a/meson.build
+++ b/meson.build
@@ -56,7 +56,7 @@ python = import('python').find_installation()
supported_oses = ['windows', 'freebsd', 'netbsd', 'openbsd', 'darwin', 'sunos', 'linux']
supported_cpus = ['ppc', 'ppc64', 's390x', 'riscv', 'x86', 'x86_64',
- 'arm', 'aarch64', 'mips', 'mips64', 'sparc', 'sparc64']
+ 'arm', 'aarch64', 'mips', 'mips64', 'sparc', 'sparc64', 'loongarch64']
cpu = host_machine.cpu_family()
targetos = host_machine.system()
diff --git a/target/loongarch/meson.build b/target/loongarch/meson.build
new file mode 100644
index 0000000..bcb076e
--- /dev/null
+++ b/target/loongarch/meson.build
@@ -0,0 +1,19 @@
+gen = decodetree.process('insns.decode')
+
+loongarch_ss = ss.source_set()
+loongarch_ss.add(files(
+ 'cpu.c',
+ 'disas.c',
+))
+loongarch_tcg_ss = ss.source_set()
+loongarch_tcg_ss.add(gen)
+loongarch_tcg_ss.add(files(
+ 'fpu_helper.c',
+ 'op_helper.c',
+ 'translate.c',
+))
+loongarch_tcg_ss.add(zlib)
+
+loongarch_ss.add_all(when: 'CONFIG_TCG', if_true: [loongarch_tcg_ss])
+
+target_arch += {'loongarch': loongarch_ss}
diff --git a/target/meson.build b/target/meson.build
index 2f69402..a53a604 100644
--- a/target/meson.build
+++ b/target/meson.build
@@ -5,6 +5,7 @@ subdir('cris')
subdir('hexagon')
subdir('hppa')
subdir('i386')
+subdir('loongarch')
subdir('m68k')
subdir('microblaze')
subdir('mips')
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 25/26] target/loongarch: 'make check-tcg' support
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (23 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 24/26] target/loongarch: Add target build suport Song Gao
@ 2021-11-12 6:54 ` Song Gao
2021-11-12 6:54 ` [PATCH v10 26/26] scripts: add loongarch64 binfmt config Song Gao
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
---
tests/tcg/configure.sh | 1 +
1 file changed, 1 insertion(+)
diff --git a/tests/tcg/configure.sh b/tests/tcg/configure.sh
index 9b76f58..49a05ec 100755
--- a/tests/tcg/configure.sh
+++ b/tests/tcg/configure.sh
@@ -51,6 +51,7 @@ fi
: ${cross_cc_cflags_armeb="-mbig-endian"}
: ${cross_cc_hexagon="hexagon-unknown-linux-musl-clang"}
: ${cross_cc_cflags_hexagon="-mv67 -O2 -static"}
+: ${cross_cc_loongarch64="loongarch64-unknown-linux-gnu-gcc"}
: ${cross_cc_hppa="hppa-linux-gnu-gcc"}
: ${cross_cc_i386="i686-linux-gnu-gcc"}
: ${cross_cc_cflags_i386="-m32"}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* [PATCH v10 26/26] scripts: add loongarch64 binfmt config
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
` (24 preceding siblings ...)
2021-11-12 6:54 ` [PATCH v10 25/26] target/loongarch: 'make check-tcg' support Song Gao
@ 2021-11-12 6:54 ` Song Gao
25 siblings, 0 replies; 40+ messages in thread
From: Song Gao @ 2021-11-12 6:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
scripts/qemu-binfmt-conf.sh | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh
index 7de996d..da6a937 100755
--- a/scripts/qemu-binfmt-conf.sh
+++ b/scripts/qemu-binfmt-conf.sh
@@ -4,7 +4,7 @@
qemu_target_list="i386 i486 alpha arm armeb sparc sparc32plus sparc64 \
ppc ppc64 ppc64le m68k mips mipsel mipsn32 mipsn32el mips64 mips64el \
sh4 sh4eb s390x aarch64 aarch64_be hppa riscv32 riscv64 xtensa xtensaeb \
-microblaze microblazeel or1k x86_64 hexagon"
+microblaze microblazeel or1k x86_64 hexagon loongarch64"
i386_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00'
i386_mask='\xff\xff\xff\xff\xff\xfe\xfe\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
@@ -140,6 +140,10 @@ hexagon_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x
hexagon_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
hexagon_family=hexagon
+loongarch64_magic='\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02\x01'
+loongarch64_mask='\xff\xff\xff\xff\xff\xff\xff\xfc\x00\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff'
+loongarch64_family=loongarch
+
qemu_get_family() {
cpu=${HOST_ARCH:-$(uname -m)}
case "$cpu" in
--
1.8.3.1
^ permalink raw reply related [flat|nested] 40+ messages in thread
* Re: [PATCH v10 16/26] target/loongarch: Add disassembler
2021-11-12 6:53 ` [PATCH v10 16/26] target/loongarch: Add disassembler Song Gao
@ 2021-11-12 7:39 ` Richard Henderson
2021-11-12 9:59 ` gaosong
0 siblings, 1 reply; 40+ messages in thread
From: Richard Henderson @ 2021-11-12 7:39 UTC (permalink / raw)
To: Song Gao, qemu-devel; +Cc: Xiaojuan Yang, laurent
On 11/12/21 7:53 AM, Song Gao wrote:
> +const char * const fccregnames[8] = {
> + "$fcc0", "$fcc1", "$fcc2", "$fcc3", "$fcc4", "$fcc5", "$fcc6", "$fcc7",
> +};
static.
> +static void output_fcsrdrj(DisasContext *ctx, arg_fmt_fcsrdrj *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s", regnames[a->fcsrd], regnames[a->rj]);
> +}
> +
> +static void output_rdfcsrs(DisasContext *ctx, arg_fmt_rdfcsrs *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s", regnames[a->rd], regnames[a->fcsrs]);
> +}
Wrong names for fcsr[ds]. Probably easiest to just use "fcsr%d" rather than having an
array of strings.
> +static void output_rdrjsi12(DisasContext *ctx, arg_fmt_rdrjsi12 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s, 0x%x",
> + regnames[a->rd], regnames[a->rj], (a->si12) & 0xfff);
> +}
Surely printing the signed value is more useful.
> +static void output_rdrjsi16(DisasContext *ctx, arg_fmt_rdrjsi16 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s, 0x%x",
> + regnames[a->rd], regnames[a->rj], (a->si16) & 0xffff);
> +}
> +
> +static void output_rdsi20(DisasContext *ctx, arg_fmt_rdsi20 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, 0x%x", regnames[a->rd], (a->si20) & 0xfffff);
> +}
> +
> +static void output_rdrjsi14(DisasContext *ctx, arg_fmt_rdrjsi14 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s, 0x%x",
> + regnames[a->rd], regnames[a->rj], (a->si14) & 0x3fff);
> +}
> +
> +static void output_hintrjsi12(DisasContext *ctx, arg_fmt_hintrjsi12 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "0x%x, %s, 0x%x",
> + a->hint, regnames[a->rj], (a->si12) & 0xfff);
> +}
> +
> +static void output_fdrjsi12(DisasContext *ctx, arg_fmt_fdrjsi12 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s, 0x%x",
> + fregnames[a->fd], regnames[a->rj], (a->si12) & 0xfff);
> +}
Likewise.
> +static void output_rjoffs21(DisasContext *ctx, arg_fmt_rjoffs21 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, 0x%x", regnames[a->rj], (a->offs21) & 0x1fffff);
> +}
> +
> +static void output_cjoffs21(DisasContext *ctx, arg_fmt_cjoffs21 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, 0x%x",
> + fccregnames[a->cj], (a->offs21) & 0x1fffff);
> +}
> +
> +static void output_rdrjoffs16(DisasContext *ctx, arg_fmt_rdrjoffs16 *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s, 0x%x",
> + regnames[a->rd], regnames[a->rj], (a->offs16) & 0xffff);
> +}
> +
> +static void output_offs(DisasContext *ctx, arg_fmt_offs *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "0x%x", (a->offs) & 0x3ffffff);
> +}
These are signed, but they're also pc-relative. It's probably most helpful to have stored
the address into ctx and compute the final address.
> +static void output_rdfj(DisasContext *ctx, arg_fmt_rdfj *a,
> + const char *mnemonic)
> +{
> + output(ctx, mnemonic, "%s, %s", regnames[a->rd], regnames[a->fj]);
> +}
Wrong name for fj.
> +#define output_fcmp(C, PREFIX, SUBFFIX) \
SUFFIX
> +static void output_cdfjfkfcond(DisasContext *ctx, arg_fmt_cdfjfkfcond * a,
> + const char *suffix)
> +{
> + switch (a->fcond) {
> + case 0x0:
> + output_fcmp(ctx, "fcmp_caf_", suffix);
> + break;
> + case 0x1:
> + output_fcmp(ctx, "fcmp_saf_", suffix);
> + break;
> + case 0x2:
> + output_fcmp(ctx, "fcmp_clt_", suffix);
> + break;
> + case 0x3:
> + output_fcmp(ctx, "fcmp_slt_", suffix);
> + break;
> + case 0x4:
> + output_fcmp(ctx, "fcmp_ceq_", suffix);
> + break;
> + case 0x5:
> + output_fcmp(ctx, "fcmp_seq_", suffix);
> + break;
> + case 0x6:
> + output_fcmp(ctx, "fcmp_cle_", suffix);
> + break;
> + case 0x7:
> + output_fcmp(ctx, "fcmp_sle_", suffix);
> + break;
> + case 0x8:
> + output_fcmp(ctx, "fcmp_cun_", suffix);
> + break;
> + case 0x9:
> + output_fcmp(ctx, "fcmp_sun_", suffix);
> + break;
> + case 0xA:
> + output_fcmp(ctx, "fcmp_cult_", suffix);
> + break;
> + case 0xB:
> + output_fcmp(ctx, "fcmp_sult_", suffix);
> + break;
> + case 0xC:
> + output_fcmp(ctx, "fcmp_cueq_", suffix);
> + break;
> + case 0xD:
> + output_fcmp(ctx, "fcmp_sueq_", suffix);
> + break;
> + case 0xE:
> + output_fcmp(ctx, "fcmp_cule_", suffix);
> + break;
> + case 0xF:
> + output_fcmp(ctx, "fcmp_sule_", suffix);
> + break;
> + case 0x10:
> + output_fcmp(ctx, "fcmp_cne_", suffix);
> + break;
> + case 0x11:
> + output_fcmp(ctx, "fcmp_sne_", suffix);
> + break;
> + case 0x14:
> + output_fcmp(ctx, "fcmp_cor_", suffix);
> + break;
> + case 0x15:
> + output_fcmp(ctx, "fcmp_sor_", suffix);
> + break;
> + case 0x18:
> + output_fcmp(ctx, "fcmp_cune_", suffix);
> + break;
> + case 0x19:
> + output_fcmp(ctx, "fcmp_sune_", suffix);
> + break;
> + default:
> + break;
Here you're going to print nothing at all, which is wrong.
> + }
> +}
> +
> +#define FCMP_INSN(insn, suffix, type) \
> +static bool trans_##insn(DisasContext *ctx, arg_fmt_##type * a) \
> +{ \
> + output_##type(ctx, a, #suffix); \
> + return true; \
> +}
I think you should drop "insn" and "type" from this define and use output_cdfjfkfcond
directly.
I think that FCMP_INSN should return output_cdfjfkfcond, which should return false for the
default case, so that decodetree returns false, so that we print "invalid".
r~
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 16/26] target/loongarch: Add disassembler
2021-11-12 7:39 ` Richard Henderson
@ 2021-11-12 9:59 ` gaosong
0 siblings, 0 replies; 40+ messages in thread
From: gaosong @ 2021-11-12 9:59 UTC (permalink / raw)
To: Richard Henderson, qemu-devel; +Cc: Xiaojuan Yang, laurent
Hi Richard,
On 2021/11/12 下午3:39, Richard Henderson wrote:
> On 11/12/21 7:53 AM, Song Gao wrote:
>> +const char * const fccregnames[8] = {
>> + "$fcc0", "$fcc1", "$fcc2", "$fcc3", "$fcc4", "$fcc5", "$fcc6",
>> "$fcc7",
>> +};
>
> static.
>
OK.
>> +static void output_fcsrdrj(DisasContext *ctx, arg_fmt_fcsrdrj *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s", regnames[a->fcsrd],
>> regnames[a->rj]);
>> +}
>> +
>> +static void output_rdfcsrs(DisasContext *ctx, arg_fmt_rdfcsrs *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s", regnames[a->rd],
>> regnames[a->fcsrs]);
>> +}
>
> Wrong names for fcsr[ds]. Probably easiest to just use "fcsr%d"
> rather than having an array of strings.
>
OK.
>> +static void output_rdrjsi12(DisasContext *ctx, arg_fmt_rdrjsi12 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s, 0x%x",
>> + regnames[a->rd], regnames[a->rj], (a->si12) & 0xfff);
>> +}
>
> Surely printing the signed value is more useful.
>
>> +static void output_rdrjsi16(DisasContext *ctx, arg_fmt_rdrjsi16 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s, 0x%x",
>> + regnames[a->rd], regnames[a->rj], (a->si16) & 0xffff);
>> +}
>> +
>> +static void output_rdsi20(DisasContext *ctx, arg_fmt_rdsi20 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, 0x%x", regnames[a->rd], (a->si20) &
>> 0xfffff);
>> +}
>> +
>> +static void output_rdrjsi14(DisasContext *ctx, arg_fmt_rdrjsi14 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s, 0x%x",
>> + regnames[a->rd], regnames[a->rj], (a->si14) & 0x3fff);
>> +}
>> +
>> +static void output_hintrjsi12(DisasContext *ctx, arg_fmt_hintrjsi12 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "0x%x, %s, 0x%x",
>> + a->hint, regnames[a->rj], (a->si12) & 0xfff);
>> +}
>> +
>> +static void output_fdrjsi12(DisasContext *ctx, arg_fmt_fdrjsi12 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s, 0x%x",
>> + fregnames[a->fd], regnames[a->rj], (a->si12) & 0xfff);
>> +}
>
> Likewise.
>
>> +static void output_rjoffs21(DisasContext *ctx, arg_fmt_rjoffs21 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, 0x%x", regnames[a->rj], (a->offs21) &
>> 0x1fffff);
>> +}
>> +
>> +static void output_cjoffs21(DisasContext *ctx, arg_fmt_cjoffs21 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, 0x%x",
>> + fccregnames[a->cj], (a->offs21) & 0x1fffff);
>> +}
>> +
>> +static void output_rdrjoffs16(DisasContext *ctx, arg_fmt_rdrjoffs16 *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s, 0x%x",
>> + regnames[a->rd], regnames[a->rj], (a->offs16) & 0xffff);
>> +}
>> +
>> +static void output_offs(DisasContext *ctx, arg_fmt_offs *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "0x%x", (a->offs) & 0x3ffffff);
>> +}
>
> These are signed, but they're also pc-relative. It's probably most
> helpful to have stored the address into ctx and compute the final
> address.
>
This's a good idea.
>> +static void output_rdfj(DisasContext *ctx, arg_fmt_rdfj *a,
>> + const char *mnemonic)
>> +{
>> + output(ctx, mnemonic, "%s, %s", regnames[a->rd], regnames[a->fj]);
>> +}
>
> Wrong name for fj.
>
>> +#define output_fcmp(C, PREFIX,
>> SUBFFIX) \
>
> SUFFIX
>
>>
>> + output_fcmp(ctx, "fcmp_slt_", suffix);
>> + break;
>> + case 0x4:
>> + output_fcmp(ctx, "fcmp_ceq_", suffix);
>> + break;
>> + case 0x5:
>> + output_fcmp(ctx, "fcmp_seq_", suffix);
>> + break;
>> + case 0x6:
>>
>> + break;
>
> Here you're going to print nothing at all, which is wrong.
>
OK.
>> + }
>> +}
>> +
>> +#define FCMP_INSN(insn, suffix, type) \
>> +static bool trans_##insn(DisasContext *ctx, arg_fmt_##type * a) \
>> +{ \
>> + output_##type(ctx, a, #suffix); \
>> + return true; \
>> +}
>
> I think you should drop "insn" and "type" from this define and use
> output_cdfjfkfcond directly.
>
> I think that FCMP_INSN should return output_cdfjfkfcond, which should
> return false for the default case, so that decodetree returns false,
> so that we print "invalid".
>
Got it, I'll correct it on V11.
>
> r~
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-12 6:53 ` [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation Song Gao
@ 2021-11-12 14:05 ` Richard Henderson
2021-11-13 3:18 ` WANG Xuerui
2021-11-15 3:59 ` gaosong
0 siblings, 2 replies; 40+ messages in thread
From: Richard Henderson @ 2021-11-12 14:05 UTC (permalink / raw)
To: Song Gao, qemu-devel; +Cc: Xiaojuan Yang, laurent
On 11/12/21 7:53 AM, Song Gao wrote:
> +#
> +# Fields
> +#
> +%rd 0:5
> +%rj 5:5
> +%rk 10:5
> +%sa2 15:2
> +%si12 10:s12
> +%ui12 10:12
> +%si16 10:s16
> +%si20 5:s20
You should only create separate field definitions like this when they are complex: e.g.
the logical field is disjoint or there's a need for !function.
> +
> +#
> +# Argument sets
> +#
> +&fmt_rdrjrk rd rj rk
> +&fmt_rdrjsi12 rd rj si12
> +&fmt_rdrjrksa2 rd rj rk sa2
> +&fmt_rdrjsi16 rd rj si16
> +&fmt_rdrjui12 rd rj ui12
> +&fmt_rdsi20 rd si20
Some of these should be combined. The width of the immediate is a detail of the format,
not the decoded argument set. Thus you should have
&fmt_rdimm rd imm
&fmt_rdrjimm rd rj imm
&fmt_rdrjrk rd rj rk
&fmt_rdrjrksa rd rj rk sa
> +alsl_w 0000 00000000 010 .. ..... ..... ..... @fmt_rdrjrksa2
> +alsl_wu 0000 00000000 011 .. ..... ..... ..... @fmt_rdrjrksa2
> +alsl_d 0000 00000010 110 .. ..... ..... ..... @fmt_rdrjrksa2
The encoding of these insns is that the shift is sa+1.
While you compensate for this in gen_alsl_*, we print the "wrong" number in the
disassembly. I think it would be better to do
%sa2p1 15:2 !function=plus_1
@fmt_rdrjrksa2p1 .... ........ ... .. rk:5 rj:5 rd:5 \
&fmt_rdrjrksa sa=%sa2p1
r~
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-12 14:05 ` Richard Henderson
@ 2021-11-13 3:18 ` WANG Xuerui
2021-11-15 3:59 ` gaosong
1 sibling, 0 replies; 40+ messages in thread
From: WANG Xuerui @ 2021-11-13 3:18 UTC (permalink / raw)
To: Richard Henderson, Song Gao, qemu-devel; +Cc: Xiaojuan Yang, laurent
On 11/12/21 22:05, Richard Henderson wrote:
> On 11/12/21 7:53 AM, Song Gao wrote:
>> +#
>> +# Fields
>> +#
>> +%rd 0:5
>> +%rj 5:5
>> +%rk 10:5
>> +%sa2 15:2
>> +%si12 10:s12
>> +%ui12 10:12
>> +%si16 10:s16
>> +%si20 5:s20
>
> You should only create separate field definitions like this when they
> are complex: e.g. the logical field is disjoint or there's a need for
> !function.
>
>> +
>> +#
>> +# Argument sets
>> +#
>> +&fmt_rdrjrk rd rj rk
>> +&fmt_rdrjsi12 rd rj si12
>> +&fmt_rdrjrksa2 rd rj rk sa2
>> +&fmt_rdrjsi16 rd rj si16
>> +&fmt_rdrjui12 rd rj ui12
>> +&fmt_rdsi20 rd si20
>
> Some of these should be combined. The width of the immediate is a
> detail of the format, not the decoded argument set. Thus you should have
>
> &fmt_rdimm rd imm
> &fmt_rdrjimm rd rj imm
> &fmt_rdrjrk rd rj rk
> &fmt_rdrjrksa rd rj rk sa
I'd like to add, that the organization of the whole decodetree file
closely resembles that of the ISA manual, most likely on purpose (while
not stated anywhere in the patch). However the manual itself is not
without errors or inconsistencies; for example, the 9 "base instruction
formats" classification is nowhere near accurate, and here we can see
the author is forced to create ad-hoc names (repeating the operand
slots). I suggest just generating the descriptions from the
loongarch-opcodes project [1]; no need to duplicate work. I'll happily
help if you decide to do that.
[1]: https://github.com/loongson-community/loongarch-opcodes
>
>> +alsl_w 0000 00000000 010 .. ..... ..... .....
>> @fmt_rdrjrksa2
>> +alsl_wu 0000 00000000 011 .. ..... ..... ..... @fmt_rdrjrksa2
>> +alsl_d 0000 00000010 110 .. ..... ..... ..... @fmt_rdrjrksa2
>
> The encoding of these insns is that the shift is sa+1.
>
> While you compensate for this in gen_alsl_*, we print the "wrong"
> number in the disassembly. I think it would be better to do
>
> %sa2p1 15:2 !function=plus_1
> @fmt_rdrjrksa2p1 .... ........ ... .. rk:5 rj:5 rd:5 \
> &fmt_rdrjrksa sa=%sa2p1
Here again, the manual was inconsistent with the binutils
implementation; the manual says (for ALSL.W, it's SLADD in
loongarch-opcodes project's revised mnemonics):
"ALSL.W logically left-shifts rj[31:0] by (sa2+1) bits, [snip]"
(translation mine, not copied from the official translation)
Clearly the "+1" part is not meant to show up in disassembly. Yet the
binutils implementation acts as if the operand should be pre-added 1 in
source code, and disassembles and prints as such, obvious mismatch here.
I'd suggest fixing the disassembly code to remove this inconsistency.
And the "+1" "feature" is not used anywhere else AFAIK, so it wouldn't
hurt to just delete everything about it.
>
>
> r~
>
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-12 14:05 ` Richard Henderson
2021-11-13 3:18 ` WANG Xuerui
@ 2021-11-15 3:59 ` gaosong
2021-11-15 8:42 ` Richard Henderson
1 sibling, 1 reply; 40+ messages in thread
From: gaosong @ 2021-11-15 3:59 UTC (permalink / raw)
To: Richard Henderson, qemu-devel; +Cc: Xiaojuan Yang, laurent
[-- Attachment #1: Type: text/plain, Size: 2651 bytes --]
Hi Richard,
On 2021/11/12 下午10:05, Richard Henderson wrote:
> On 11/12/21 7:53 AM, Song Gao wrote:
>> +#
>> +# Fields
>> +#
>> +%rd 0:5
>> +%rj 5:5
>> +%rk 10:5
>> +%sa2 15:2
>> +%si12 10:s12
>> +%ui12 10:12
>> +%si16 10:s16
>> +%si20 5:s20
>
> You should only create separate field definitions like this when they
> are complex: e.g. the logical field is disjoint or there's a need for
> !function.
>
>> +
>> +#
>> +# Argument sets
>> +#
>> +&fmt_rdrjrk rd rj rk
>> +&fmt_rdrjsi12 rd rj si12
>> +&fmt_rdrjrksa2 rd rj rk sa2
>> +&fmt_rdrjsi16 rd rj si16
>> +&fmt_rdrjui12 rd rj ui12
>> +&fmt_rdsi20 rd si20
>
> Some of these should be combined. The width of the immediate is a
> detail of the format, not the decoded argument set. Thus you should have
>
> &fmt_rdimm rd imm
> &fmt_rdrjimm rd rj imm
> &fmt_rdrjrk rd rj rk
> &fmt_rdrjrksa rd rj rk sa
>
'The width of the immediate is a detail of the format' means:
&fmt_rdrjimm rd rj imm
@fmt_rdrjimm .... ...... imm:12 rj:5 rd:5 &fmt_rdrjimm
@fmt_rdrjimm14 .... .... imm:14 rj:5 rd:5 &fmt_rdrjimm
@fmt_rdrjimm16 .... .. imm:16 rj:5 rd:5 &fmt_rdrjimm
and we print in the disassembly, liks this
output_rdrjimm(DisasContext *ctx, arg_fmt_rdrjimm * a, const char *mnemonic)
{
output(ctx, mnemonic, "%s, %s, 0x%x", regnames[a->rd], regnames[a->rj], a->imm);
}
is that right?
>> +alsl_w 0000 00000000 010 .. ..... ..... .....
>> @fmt_rdrjrksa2
>> +alsl_wu 0000 00000000 011 .. ..... ..... .....
>> @fmt_rdrjrksa2
>> +alsl_d 0000 00000010 110 .. ..... ..... .....
>> @fmt_rdrjrksa2
>
> The encoding of these insns is that the shift is sa+1.
>
> While you compensate for this in gen_alsl_*, we print the "wrong"
> number in the disassembly. I think it would be better to do
>
> %sa2p1 15:2 !function=plus_1
> @fmt_rdrjrksa2p1 .... ........ ... .. rk:5 rj:5 rd:5 \
> &fmt_rdrjrksa sa=%sa2p1
>
1. We print sa in disassembly output_rdrjrksa(DisasContext *ctx,
arg_fmt_rdrjsa* a, const char *memonic) { output(ctx, memonic, "%s, %s,
%s, 0x0x", regnames[a->rd], regnames[a->rj], a->sa) } 2. We use sa on
gen_alsl_* not (sa2+1). 3 bytepick_w use the same print functions. but
the Field/Argurment/Format is %sa2 15:2 &fmt_rdrjrksa rd rj sa
@fmt_rdrjrk sa2 .... ........ ... sa:2 rk:5 rj:5 rd:5 &fmt_rdrjrksa Is
my understanding right? Thanks. Song Gao
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^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-15 3:59 ` gaosong
@ 2021-11-15 8:42 ` Richard Henderson
2021-11-17 7:57 ` gaosong
0 siblings, 1 reply; 40+ messages in thread
From: Richard Henderson @ 2021-11-15 8:42 UTC (permalink / raw)
To: gaosong, qemu-devel; +Cc: Xiaojuan Yang, laurent
On 11/15/21 4:59 AM, gaosong wrote:
> 'The width of the immediate is a detail of the format' means:
>
> &fmt_rdrjimm rd rj imm
>
> @fmt_rdrjimm .... ...... imm:12 rj:5 rd:5 &fmt_rdrjimm
> @fmt_rdrjimm14 .... .... imm:14 rj:5 rd:5 &fmt_rdrjimm
> @fmt_rdrjimm16 .... .. imm:16 rj:5 rd:5 &fmt_rdrjimm
>
> and we print in the disassembly, liks this
>
> output_rdrjimm(DisasContext *ctx, arg_fmt_rdrjimm * a, const char *mnemonic)
> {
> output(ctx, mnemonic, "%s, %s, 0x%x", regnames[a->rd], regnames[a->rj], a->imm);
> }
>
> is that right?
Yes.
I'll note that regnames[] is defined in target/loongarch/cpu.c, which is not available
when we want to use this disassembler for tcg/loongarch64/. I think it would be easier to
print this as
"r%d", a->rd
so that you do not need to rely on the external strings.
I also think you should print signed numbers, "%d", because 0xfffffff8 (truncated to 32
bits) is not really the correct representation of -8 for a 64-bit operand.
> 1. We print sa in disassembly...
> 2. We use sa on gen_alsl_* not (sa2+1).
> 3. bytepick_w use the same print functions.
> Is my understanding right?
Yes, that is the issue I am describing.
r~
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 17/26] linux-user: Add LoongArch generic header files
2021-11-12 6:54 ` [PATCH v10 17/26] linux-user: Add LoongArch generic header files Song Gao
@ 2021-11-16 8:33 ` Philippe Mathieu-Daudé
2021-11-16 11:50 ` gaosong
0 siblings, 1 reply; 40+ messages in thread
From: Philippe Mathieu-Daudé @ 2021-11-16 8:33 UTC (permalink / raw)
To: Song Gao, qemu-devel; +Cc: Xiaojuan Yang, richard.henderson, laurent
Hi,
On 11/12/21 07:54, Song Gao wrote:
> This includes:
> - sockbits.h
> - target_errno_defs.h
> - target_fcntl.h
> - termbits.h
>
> Signed-off-by: Song Gao <gaosong@loongson.cn>
> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
> ---
> linux-user/loongarch64/sockbits.h | 1 +
> linux-user/loongarch64/target_errno_defs.h | 7 +++++++
> linux-user/loongarch64/target_fcntl.h | 6 ++++++
> linux-user/loongarch64/termbits.h | 1 +
> 4 files changed, 15 insertions(+)
> create mode 100644 linux-user/loongarch64/sockbits.h
> create mode 100644 linux-user/loongarch64/target_errno_defs.h
> create mode 100644 linux-user/loongarch64/target_fcntl.h
> create mode 100644 linux-user/loongarch64/termbits.h
>
> diff --git a/linux-user/loongarch64/sockbits.h b/linux-user/loongarch64/sockbits.h
> new file mode 100644
> index 0000000..0e4c8f0
> --- /dev/null
> +++ b/linux-user/loongarch64/sockbits.h
> @@ -0,0 +1 @@
Why not guarding the header here, ...
> +#include "../generic/sockbits.h"
> diff --git a/linux-user/loongarch64/target_errno_defs.h b/linux-user/loongarch64/target_errno_defs.h
> new file mode 100644
> index 0000000..17165c1
> --- /dev/null
> +++ b/linux-user/loongarch64/target_errno_defs.h
> @@ -0,0 +1,7 @@
> +#ifndef LOONGARCH_TARGET_ERRNO_DEFS_H
> +#define LOONGARCH_TARGET_ERRNO_DEFS_H
... but guard this one?
> +
> +/* Target uses generic errno */
> +#include "../generic/target_errno_defs.h"
> +
> +#endif
New files require a license. I'd recommend adding a SPDX
tag in the first line. For example with GPLv2+:
/* SPDX-License-Identifier: GPL-2.0-or-later */
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 17/26] linux-user: Add LoongArch generic header files
2021-11-16 8:33 ` Philippe Mathieu-Daudé
@ 2021-11-16 11:50 ` gaosong
0 siblings, 0 replies; 40+ messages in thread
From: gaosong @ 2021-11-16 11:50 UTC (permalink / raw)
To: Philippe Mathieu-Daudé
Cc: Xiaojuan Yang, richard.henderson, qemu-devel, laurent
[-- Attachment #1: Type: text/plain, Size: 1995 bytes --]
Hi Philippe,
On 2021/11/16 下午4:33, Philippe Mathieu-Daudé wrote:
> Hi,
>
> On 11/12/21 07:54, Song Gao wrote:
>> This includes:
>> - sockbits.h
>> - target_errno_defs.h
>> - target_fcntl.h
>> - termbits.h
>>
>> Signed-off-by: Song Gao <gaosong@loongson.cn>
>> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
>> ---
>> linux-user/loongarch64/sockbits.h | 1 +
>> linux-user/loongarch64/target_errno_defs.h | 7 +++++++
>> linux-user/loongarch64/target_fcntl.h | 6 ++++++
>> linux-user/loongarch64/termbits.h | 1 +
>> 4 files changed, 15 insertions(+)
>> create mode 100644 linux-user/loongarch64/sockbits.h
>> create mode 100644 linux-user/loongarch64/target_errno_defs.h
>> create mode 100644 linux-user/loongarch64/target_fcntl.h
>> create mode 100644 linux-user/loongarch64/termbits.h
>>
>> diff --git a/linux-user/loongarch64/sockbits.h b/linux-user/loongarch64/sockbits.h
>> new file mode 100644
>> index 0000000..0e4c8f0
>> --- /dev/null
>> +++ b/linux-user/loongarch64/sockbits.h
>> @@ -0,0 +1 @@
> Why not guarding the header here, ...
>
>> +#include "../generic/sockbits.h"
>> diff --git a/linux-user/loongarch64/target_errno_defs.h b/linux-user/loongarch64/target_errno_defs.h
>> new file mode 100644
>> index 0000000..17165c1
>> --- /dev/null
>> +++ b/linux-user/loongarch64/target_errno_defs.h
>> @@ -0,0 +1,7 @@
>> +#ifndef LOONGARCH_TARGET_ERRNO_DEFS_H
>> +#define LOONGARCH_TARGET_ERRNO_DEFS_H
> ... but guard this one?
>> +
>> +/* Target uses generic errno */
>> +#include "../generic/target_errno_defs.h"
>> +
>> +#endif
> New files require a license. I'd recommend adding a SPDX
> tag in the first line. For example with GPLv2+:
>
> /* SPDX-License-Identifier: GPL-2.0-or-later */
Yes, except for sockbits.h and target_errno_defs.h, other files are in this format.
Sould we need to unify al files formats like this? I see that the most of linux-user/ARCH/ sockets.h and target_errno_defs,h are the same.
Thanks
Song Gao
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^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-15 8:42 ` Richard Henderson
@ 2021-11-17 7:57 ` gaosong
2021-11-17 8:28 ` Richard Henderson
0 siblings, 1 reply; 40+ messages in thread
From: gaosong @ 2021-11-17 7:57 UTC (permalink / raw)
To: Richard Henderson; +Cc: Xiaojuan Yang, qemu-devel, laurent
[-- Attachment #1: Type: text/plain, Size: 3103 bytes --]
Hi Richard,
On 2021/11/15 下午4:42, Richard Henderson wrote:
> On 11/15/21 4:59 AM, gaosong wrote:
>> 'The width of the immediate is a detail of the format' means:
>>
>> &fmt_rdrjimm rd rj imm
>>
>> @fmt_rdrjimm .... ...... imm:12 rj:5 rd:5 &fmt_rdrjimm
>> @fmt_rdrjimm14 .... .... imm:14 rj:5 rd:5 &fmt_rdrjimm
>> @fmt_rdrjimm16 .... .. imm:16 rj:5 rd:5 &fmt_rdrjimm
>>
>> and we print in the disassembly, liks this
>>
>> output_rdrjimm(DisasContext *ctx, arg_fmt_rdrjimm * a, const char
>> *mnemonic)
>> {
>> output(ctx, mnemonic, "%s, %s, 0x%x", regnames[a->rd],
>> regnames[a->rj], a->imm);
>> }
>>
>> is that right?
>
> Yes.
>
> I'll note that regnames[] is defined in target/loongarch/cpu.c, which
> is not available when we want to use this disassembler for
> tcg/loongarch64/. I think it would be easier to print this as
>
> "r%d", a->rd
>
> so that you do not need to rely on the external strings.
>
> I also think you should print signed numbers, "%d", because 0xfffffff8
> (truncated to 32 bits) is not really the correct representation of -8
> for a 64-bit operand.
>
>
>> 1. We print sa in disassembly...
>> 2. We use sa on gen_alsl_* not (sa2+1).
>> 3. bytepick_w use the same print functions.
>> Is my understanding right?
>
> Yes, that is the issue I am describing.
>
I see that insns.decode format is not very consistent with other
architectures, such ARM/RISCV
I'll correct it , like this:
# Fields
#
%sa2p1 15:2 !function=plus_1
#
# Argument sets
#
&r_i rd imm
&rrr rd rj rk
&rr_i rd rj imm
&rrr_sa rd rj rk sa
#
# Formats
#
@fmt_rrr .... ........ ..... rk:5 rj:5 rd:5 &rrr
@fmt_r_i20 .... ... imm:s20 rd:5 &r_i
@fmt_rr_i12 .... ...... imm:s12 rj:5 rd:5 &rr_i
@fmt_rr_ui12 .... ...... imm:12 rj:5 rd:5 &rr_i
@fmt_rr_i16 .... .. imm:s16 rj:5 rd:5 &rr_i
@fmt_rrr_sa2p1 .... ........ ... .. rk:5 rj:5 rd:5 &rrr_sa sa=%sa2p1
#
# Fixed point arithmetic operation instruction
#
add_w 0000 00000001 00000 ..... ..... ..... @fmt_rrr
add_d 0000 00000001 00001 ..... ..... ..... @fmt_rrr
sub_w 0000 00000001 00010 ..... ..... ..... @fmt_rrr
sub_d 0000 00000001 00011 ..... ..... ..... @fmt_rrr
slt 0000 00000001 00100 ..... ..... ..... @fmt_rrr
sltu 0000 00000001 00101 ..... ..... ..... @fmt_rrr
slti 0000 001000 ............ ..... .....
@fmt_rr_i12
and trans_xxx.c.inc
static bool gen_rrr(DisasContext *ctx, arg_rrr *a, ...) {}
static bool gen_rr_i12(DisasContext *ctx, arg_rr_i *a, ) {}
static bool gen_rrr_sa2p1(DisasContext *ctx, arg_rrr_sa *a, ...) {}
...
Richard, is that OK?
Thanks,
Song Gao
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^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-17 7:57 ` gaosong
@ 2021-11-17 8:28 ` Richard Henderson
2021-11-17 9:29 ` gaosong
0 siblings, 1 reply; 40+ messages in thread
From: Richard Henderson @ 2021-11-17 8:28 UTC (permalink / raw)
To: gaosong; +Cc: Xiaojuan Yang, qemu-devel, laurent
On 11/17/21 8:57 AM, gaosong wrote:
> I see that insns.decode format is not very consistent with other architectures, such
> ARM/RISCV
No. I don't like how riscv has done it, though they have quite a few split fields, so
perhaps they thought it looked weird.
> #
> # Argument sets
> #
> &r_i rd imm
> &rrr rd rj rk
> &rr_i rd rj imm
> &rrr_sa rd rj rk sa
>
> #
> # Formats
> #
> @fmt_rrr .... ........ ..... rk:5 rj:5 rd:5 &rrr
> @fmt_r_i20 .... ... imm:s20 rd:5 &r_i
> @fmt_rr_i12 .... ...... imm:s12 rj:5 rd:5 &rr_i
> @fmt_rr_ui12 .... ...... imm:12 rj:5 rd:5 &rr_i
> @fmt_rr_i16 .... .. imm:s16 rj:5 rd:5 &rr_i
> @fmt_rrr_sa2p1 .... ........ ... .. rk:5 rj:5 rd:5 &rrr_sa sa=%sa2p1
>
> #
> # Fixed point arithmetic operation instruction
> #
> add_w 0000 00000001 00000 ..... ..... ..... @fmt_rrr
> add_d 0000 00000001 00001 ..... ..... ..... @fmt_rrr
> sub_w 0000 00000001 00010 ..... ..... ..... @fmt_rrr
> sub_d 0000 00000001 00011 ..... ..... ..... @fmt_rrr
> slt 0000 00000001 00100 ..... ..... ..... @fmt_rrr
> sltu 0000 00000001 00101 ..... ..... ..... @fmt_rrr
> slti 0000 001000 ............ ..... ..... @fmt_rr_i12
>
>
> and trans_xxx.c.inc
>
> static bool gen_rrr(DisasContext *ctx, arg_rrr *a, ...) {}
> static bool gen_rr_i12(DisasContext *ctx, arg_rr_i *a, ) {}
gen_rr_i ?
> static bool gen_rrr_sa2p1(DisasContext *ctx, arg_rrr_sa *a, ...) {}
gen_rrr_sa ?
> Richard, is that OK?
Other than those two nits, this looks very clean. Thanks,
r~
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-17 8:28 ` Richard Henderson
@ 2021-11-17 9:29 ` gaosong
2021-11-17 9:55 ` Richard Henderson
0 siblings, 1 reply; 40+ messages in thread
From: gaosong @ 2021-11-17 9:29 UTC (permalink / raw)
To: Richard Henderson; +Cc: Xiaojuan Yang, qemu-devel, laurent
[-- Attachment #1: Type: text/plain, Size: 3392 bytes --]
Hi Richard,
On 2021/11/17 下午4:28, Richard Henderson wrote:
> On 11/17/21 8:57 AM, gaosong wrote:
>> I see that insns.decode format is not very consistent with other
>> architectures, such ARM/RISCV
>
> No. I don't like how riscv has done it, though they have quite a few
> split fields, so perhaps they thought it looked weird.
>
>
>> #
>> # Argument sets
>> #
>> &r_i rd imm
>> &rrr rd rj rk
>> &rr_i rd rj imm
>> &rrr_sa rd rj rk sa
>>
>> #
>> # Formats
>> #
>> @fmt_rrr .... ........ ..... rk:5 rj:5 rd:5 &rrr
>> @fmt_r_i20 .... ... imm:s20 rd:5 &r_i
>> @fmt_rr_i12 .... ...... imm:s12 rj:5 rd:5 &rr_i
>> @fmt_rr_ui12 .... ...... imm:12 rj:5 rd:5 &rr_i
>> @fmt_rr_i16 .... .. imm:s16 rj:5 rd:5 &rr_i
>> @fmt_rrr_sa2p1 .... ........ ... .. rk:5 rj:5 rd:5 &rrr_sa
>> sa=%sa2p1
>>
>> #
>> # Fixed point arithmetic operation instruction
>> #
>> add_w 0000 00000001 00000 ..... ..... ..... @fmt_rrr
>> add_d 0000 00000001 00001 ..... ..... ..... @fmt_rrr
>> sub_w 0000 00000001 00010 ..... ..... ..... @fmt_rrr
>> sub_d 0000 00000001 00011 ..... ..... ..... @fmt_rrr
>> slt 0000 00000001 00100 ..... ..... ..... @fmt_rrr
>> sltu 0000 00000001 00101 ..... ..... ..... @fmt_rrr
>> slti 0000 001000 ............ ..... .....
>> @fmt_rr_i12
>>
>>
>> and trans_xxx.c.inc
>>
>> static bool gen_rrr(DisasContext *ctx, arg_rrr *a, ...) {}
>> static bool gen_rr_i12(DisasContext *ctx, arg_rr_i *a, ) {}
>
> gen_rr_i ?
The code is not written completely, like this:
gen_rr_i12:
@fmt_rr_i12 .... ...... imm:s12 rj:5 rd:5 &rr_i
slti 0000 001000 ............ ..... ..... @fmt_rr_i12
sltui 0000 001001 ............ ..... ..... @fmt_rr_i12
...
gen_rr_ui12:
@fmt_rr_ui12 .... ...... imm:12 rj:5 rd:5 &rr_i
andi 0000 001101 ............ ..... ..... @fmt_rr_ui12
ori 0000 001110 ............ ..... ..... @fmt_rr_ui12
xori 0000 001111 ............ ..... ..... @fmt_rr_ui12
...
@fmt_rr_i12 and @fmt_rr_ui12 are two 'Formats', but they use the same 'Argument sets'(rr_i).
>
>> static bool gen_rrr_sa2p1(DisasContext *ctx, arg_rrr_sa *a, ...) {}
>
> gen_rrr_sa ?
>
Likewise.
gen_rrr_sa2p1:
@fmt_rrr_sa2p1 .... ........ ... .. rk:5 rj:5 rd:5 &fmt_rr_sa sa=%sa2p1
lsl_w 0000 00000000 010 .. ..... ..... ..... @fmt_rrr_sa2p1
alsl_wu 0000 00000000 011 .. ..... ..... ..... @fmt_rrr_sa2p1
alsl_d 0000 00000010 110 .. ..... ..... ..... @fmt_rrr_sa2p1
...
gen_rrr_sa2:
@fmt_rrr_sa2 .... ........ ... sa:2 rk:5 rj:5 rd:5 &fmt_rr_sa
bytepick_w 0000 00000000 100 .. ..... ..... ..... @fmt_rrr_sa3
...
gen_rrr_sa3:
@fmt_rrr_sa3 .... ........ .. sa:3 rk:5 rj:5 rd:5 &fmt_rr_sa
bytepick_d 0000 00000000 11 ... ..... ..... ..... @fmt_rrr_sa3
...
>> Richard, is that OK?
>
> Other than those two nits, this looks very clean. Thanks,
>
OK, I'll correct it on v11.
Thanks.
Song Gao
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^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-17 9:29 ` gaosong
@ 2021-11-17 9:55 ` Richard Henderson
2021-11-18 1:24 ` gaosong
0 siblings, 1 reply; 40+ messages in thread
From: Richard Henderson @ 2021-11-17 9:55 UTC (permalink / raw)
To: gaosong; +Cc: Xiaojuan Yang, qemu-devel, laurent
On 11/17/21 10:29 AM, gaosong wrote:
>> gen_rr_i ?
>
> The code is not written completely, like this:
>
> gen_rr_i12:
>
> @fmt_rr_i12 .... ...... imm:s12 rj:5 rd:5 &rr_i
> slti 0000 001000 ............ ..... ..... @fmt_rr_i12
> sltui 0000 001001 ............ ..... ..... @fmt_rr_i12
> ...
>
> gen_rr_ui12:
>
> @fmt_rr_ui12 .... ...... imm:12 rj:5 rd:5 &rr_i
> andi 0000 001101 ............ ..... ..... @fmt_rr_ui12
> ori 0000 001110 ............ ..... ..... @fmt_rr_ui12
> xori 0000 001111 ............ ..... ..... @fmt_rr_ui12
> ...
>
> @fmt_rr_i12 and @fmt_rr_ui12 are two 'Formats', but they use the same 'Argument sets'(rr_i).
What I meant is that there would be a single gen_rr_i function handing the argument set
rr_i; no need for two gen_rr_i* functions.
> gen_rrr_sa2p1:
>
> @fmt_rrr_sa2p1 .... ........ ... .. rk:5 rj:5 rd:5 &fmt_rr_sa sa=%sa2p1
> lsl_w 0000 00000000 010 .. ..... ..... ..... @fmt_rrr_sa2p1
> alsl_wu 0000 00000000 011 .. ..... ..... ..... @fmt_rrr_sa2p1
> alsl_d 0000 00000010 110 .. ..... ..... ..... @fmt_rrr_sa2p1
> ...
>
> gen_rrr_sa2:
> @fmt_rrr_sa2 .... ........ ... sa:2 rk:5 rj:5 rd:5 &fmt_rr_sa
> bytepick_w 0000 00000000 100 .. ..... ..... ..... @fmt_rrr_sa3
> ...
>
> gen_rrr_sa3:
> @fmt_rrr_sa3 .... ........ .. sa:3 rk:5 rj:5 rd:5 &fmt_rr_sa
> bytepick_d 0000 00000000 11 ... ..... ..... ..... @fmt_rrr_sa3
> ...
Likewise a single gen_rrr_sa function.
r~
^ permalink raw reply [flat|nested] 40+ messages in thread
* Re: [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation
2021-11-17 9:55 ` Richard Henderson
@ 2021-11-18 1:24 ` gaosong
0 siblings, 0 replies; 40+ messages in thread
From: gaosong @ 2021-11-18 1:24 UTC (permalink / raw)
To: Richard Henderson; +Cc: Xiaojuan Yang, qemu-devel, laurent
[-- Attachment #1: Type: text/plain, Size: 336 bytes --]
Hi Richard,
On 2021/11/17 下午5:55, Richard Henderson wrote:
>>
>> @fmt_rr_i12 and @fmt_rr_ui12 are two 'Formats', but they use the
>> same 'Argument sets'(rr_i).
>
> What I meant is that there would be a single gen_rr_i function handing
> the argument set rr_i; no need for two gen_rr_i* functions.
Got it.
Thanks.
Song Gao
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^ permalink raw reply [flat|nested] 40+ messages in thread
end of thread, other threads:[~2021-11-18 1:26 UTC | newest]
Thread overview: 40+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-11-12 6:53 [PATCH v10 00/26] Add LoongArch linux-user emulation support Song Gao
2021-11-12 6:53 ` [PATCH v10 01/26] target/loongarch: Add README Song Gao
2021-11-12 6:53 ` [PATCH v10 02/26] target/loongarch: Add core definition Song Gao
2021-11-12 6:53 ` [PATCH v10 03/26] target/loongarch: Add main translation routines Song Gao
2021-11-12 6:53 ` [PATCH v10 04/26] target/loongarch: Add fixed point arithmetic instruction translation Song Gao
2021-11-12 14:05 ` Richard Henderson
2021-11-13 3:18 ` WANG Xuerui
2021-11-15 3:59 ` gaosong
2021-11-15 8:42 ` Richard Henderson
2021-11-17 7:57 ` gaosong
2021-11-17 8:28 ` Richard Henderson
2021-11-17 9:29 ` gaosong
2021-11-17 9:55 ` Richard Henderson
2021-11-18 1:24 ` gaosong
2021-11-12 6:53 ` [PATCH v10 05/26] target/loongarch: Add fixed point shift " Song Gao
2021-11-12 6:53 ` [PATCH v10 06/26] target/loongarch: Add fixed point bit " Song Gao
2021-11-12 6:53 ` [PATCH v10 07/26] target/loongarch: Add fixed point load/store " Song Gao
2021-11-12 6:53 ` [PATCH v10 08/26] target/loongarch: Add fixed point atomic " Song Gao
2021-11-12 6:53 ` [PATCH v10 09/26] target/loongarch: Add fixed point extra " Song Gao
2021-11-12 6:53 ` [PATCH v10 10/26] target/loongarch: Add floating point arithmetic " Song Gao
2021-11-12 6:53 ` [PATCH v10 11/26] target/loongarch: Add floating point comparison " Song Gao
2021-11-12 6:53 ` [PATCH v10 12/26] target/loongarch: Add floating point conversion " Song Gao
2021-11-12 6:53 ` [PATCH v10 13/26] target/loongarch: Add floating point move " Song Gao
2021-11-12 6:53 ` [PATCH v10 14/26] target/loongarch: Add floating point load/store " Song Gao
2021-11-12 6:53 ` [PATCH v10 15/26] target/loongarch: Add branch " Song Gao
2021-11-12 6:53 ` [PATCH v10 16/26] target/loongarch: Add disassembler Song Gao
2021-11-12 7:39 ` Richard Henderson
2021-11-12 9:59 ` gaosong
2021-11-12 6:54 ` [PATCH v10 17/26] linux-user: Add LoongArch generic header files Song Gao
2021-11-16 8:33 ` Philippe Mathieu-Daudé
2021-11-16 11:50 ` gaosong
2021-11-12 6:54 ` [PATCH v10 18/26] linux-user: Add LoongArch specific structures Song Gao
2021-11-12 6:54 ` [PATCH v10 19/26] linux-user: Add LoongArch signal support Song Gao
2021-11-12 6:54 ` [PATCH v10 20/26] linux-user: Add LoongArch elf support Song Gao
2021-11-12 6:54 ` [PATCH v10 21/26] linux-user: Add LoongArch syscall support Song Gao
2021-11-12 6:54 ` [PATCH v10 22/26] linux-user: Add LoongArch cpu_loop support Song Gao
2021-11-12 6:54 ` [PATCH v10 23/26] default-configs: Add loongarch linux-user support Song Gao
2021-11-12 6:54 ` [PATCH v10 24/26] target/loongarch: Add target build suport Song Gao
2021-11-12 6:54 ` [PATCH v10 25/26] target/loongarch: 'make check-tcg' support Song Gao
2021-11-12 6:54 ` [PATCH v10 26/26] scripts: add loongarch64 binfmt config Song Gao
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