From: Song Gao <gaosong@loongson.cn>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, yangxiaojuan@loongson.cn,
david@redhat.com, bin.meng@windriver.com,
mark.cave-ayland@ilande.co.uk, aleksandar.rikalo@syrmia.com,
jcmvbkbc@gmail.com, tsimpson@quicinc.com,
alistair.francis@wdc.com, edgar.iglesias@gmail.com,
chenhuacai@gmail.com, philmd@redhat.com, atar4qemu@gmail.com,
thuth@redhat.com, ehabkost@redhat.com,
richard.henderson@linaro.org, groug@kaod.org,
maobibo@loongson.cn, mrolnik@gmail.com, shorne@gmail.com,
alex.bennee@linaro.org, david@gibson.dropbear.id.au,
kbastian@mail.uni-paderborn.de, crwulff@gmail.com,
laurent@vivier.eu, palmer@dabbelt.com, pbonzini@redhat.com,
aurelien@aurel32.net
Subject: [PATCH v4 02/21] target/loongarch: Add core definition
Date: Thu, 2 Sep 2021 20:40:48 +0800 [thread overview]
Message-ID: <1630586467-22463-3-git-send-email-gaosong@loongson.cn> (raw)
In-Reply-To: <1630586467-22463-1-git-send-email-gaosong@loongson.cn>
This patch add target state header, target definitions
and initialization routines.
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: XiaoJuan Yang <yangxiaojuan@loongson.cn>
---
target/loongarch/cpu-param.h | 19 +++
target/loongarch/cpu.c | 285 +++++++++++++++++++++++++++++++++++++++++++
target/loongarch/cpu.h | 145 ++++++++++++++++++++++
target/loongarch/internals.h | 23 ++++
4 files changed, 472 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..83f9624
--- /dev/null
+++ b/target/loongarch/cpu-param.h
@@ -0,0 +1,19 @@
+/*
+ * LoongArch cpu parameters for qemu.
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+#ifndef LOONGARCH_CPU_PARAM_H
+#define LOONGARCH_CPU_PARAM_H 1
+
+#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..b89bf51
--- /dev/null
+++ b/target/loongarch/cpu.c
@@ -0,0 +1,285 @@
+/*
+ * QEMU LoongArch CPU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+#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", "ra", "tp", "sp", "a0", "a1", "a2", "a3",
+ "a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3",
+ "t4", "t5", "t6", "t7", "t8", "x0", "fp", "s0",
+ "s1", "s2", "s3", "s4", "s5", "s6", "s7", "s8",
+};
+
+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] = "Inst. Not Exist",
+ [EXCP_FPE] = "Floating Point Exception",
+};
+
+const char *loongarch_exception_name(int32_t exception)
+{
+ if (exception < 0 || exception > EXCP_LAST) {
+ return "unknown";
+ }
+ 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 set_loongarch_cpucfg(CPULoongArchState *env)
+{
+ int i;
+
+ for (i = 0; i < 15; i++) {
+ env->cpucfg[i] = 0x0;
+ }
+ env->cpucfg[0] = 0x14c010;
+ env->cpucfg[1] = 0x3f2f2fe;
+ env->cpucfg[2] = 0x60c3cf;
+ env->cpucfg[3] = 0xcff;
+ env->cpucfg[4] = 0x5f5e100;
+ env->cpucfg[5] = 0x10001;
+ env->cpucfg[10] = 0x2c3d;
+ env->cpucfg[11] = 0x6080003;
+ env->cpucfg[12] = 0x6080003;
+ env->cpucfg[13] = 0x60800f;
+ env->cpucfg[14] = 0x60f000f;
+}
+
+/* LoongArch CPU definitions */
+static void loongarch_3a5000_initfn(Object *obj)
+{
+ LoongArchCPU *cpu = LOONGARCH_CPU(obj);
+ CPULoongArchState *env = &cpu->env;
+
+ set_loongarch_cpucfg(env);
+}
+
+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);
+
+ set_loongarch_cpucfg(env);
+ 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 bool loongarch_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
+ MMUAccessType access_type, int mmu_idx,
+ bool probe, uintptr_t retaddr)
+{
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+
+ env->badaddr = address;
+ cs->exception_index = EXCP_ADE;
+ do_raise_exception(env, cs->exception_index, retaddr);
+}
+
+static struct TCGCPUOps loongarch_tcg_ops = {
+ .initialize = loongarch_translate_init,
+ .synchronize_from_tb = loongarch_cpu_synchronize_from_tb,
+ .tlb_fill = loongarch_cpu_tlb_fill,
+};
+#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..a0348d0
--- /dev/null
+++ b/target/loongarch/cpu.h
@@ -0,0 +1,145 @@
+/*
+ * QEMU LoongArch CPU
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+#ifndef LOONGARCH_CPU_H
+#define LOONGARCH_CPU_H
+
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat-types.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 */
+#define GET_FP_CAUSE(reg) (((reg) >> 24) & 0x1f)
+#define GET_FP_ENABLE(reg) (reg & 0x1f)
+#define GET_FP_FLAGS(reg) (((reg) >> 16) & 0x1f)
+#define SET_FP_CAUSE(reg, v) do { (reg) = ((reg) & ~(0x1f << 24)) | \
+ ((v & 0x1f) << 24); \
+ } while (0)
+#define SET_FP_ENABLE(reg, v) do { (reg) = ((reg) & ~(0x1f) | (v & 0x1f); \
+ } while (0)
+#define SET_FP_FLAGS(reg, v) do { (reg) = ((reg) & ~(0x1f << 16)) | \
+ ((v & 0x1f) << 16); \
+ } while (0)
+#define UPDATE_FP_FLAGS(reg, v) do { (reg) |= ((v & 0x1f) << 16); } while (0)
+
+#define FP_INEXACT 1
+#define FP_UNDERFLOW 2
+#define FP_OVERFLOW 4
+#define FP_DIV0 8
+#define FP_INVALID 16
+
+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[15];
+
+ uint64_t lladdr; /* LL virtual address compared against SC */
+ uint64_t llval;
+
+ uint64_t badaddr;
+};
+
+/**
+ * LoongArchCPU:
+ * @env: #CPULoongArchState
+ * @clock: this CPU input clock (may be connected
+ * to an output clock from another device).
+ *
+ * A LoongArch CPU.
+ */
+struct LoongArchCPU {
+ /*< private >*/
+ CPUState parent_obj;
+ /*< public >*/
+
+ CPUNegativeOffsetState neg;
+ CPULoongArchState env;
+};
+
+#define TYPE_LOONGARCH_CPU "loongarch64-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;
+};
+
+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;
+}
+
+void loongarch_cpu_list(void);
+
+#define cpu_signal_handler cpu_loongarch_signal_handler
+#define cpu_list loongarch_cpu_list
+
+#define MMU_USER_IDX 3
+
+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,
+};
+
+int cpu_loongarch_signal_handler(int host_signum, void *pinfo, void *puc);
+
+#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..cfb08df
--- /dev/null
+++ b/target/loongarch/internals.h
@@ -0,0 +1,23 @@
+/*
+ * QEMU LoongArch CPU -- internal functions and types
+ *
+ * Copyright (c) 2021 Loongson Technology Corporation Limited
+ *
+ * SPDX-License-Identifier: LGPL-2.1+
+ */
+
+#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
next prev parent reply other threads:[~2021-09-02 12:48 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-02 12:40 [PATCH v4 00/21] Add LoongArch linux-user emulation support Song Gao
2021-09-02 12:40 ` [PATCH v4 01/21] target/loongarch: Add README Song Gao
2021-09-02 12:40 ` Song Gao [this message]
2021-09-04 9:44 ` [PATCH v4 02/21] target/loongarch: Add core definition Richard Henderson
2021-09-02 12:40 ` [PATCH v4 03/21] target/loongarch: Add main translation routines Song Gao
2021-09-04 9:45 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 04/21] target/loongarch: Add fixed point arithmetic instruction translation Song Gao
2021-09-04 11:04 ` Richard Henderson
2021-09-07 12:36 ` Song Gao
2021-09-02 12:40 ` [PATCH v4 05/21] target/loongarch: Add fixed point shift " Song Gao
2021-09-04 11:17 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 06/21] target/loongarch: Add fixed point bit " Song Gao
2021-09-04 12:57 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 07/21] target/loongarch: Add fixed point load/store " Song Gao
2021-09-04 13:03 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 08/21] target/loongarch: Add fixed point atomic " Song Gao
2021-09-04 13:14 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 09/21] target/loongarch: Add fixed point extra " Song Gao
2021-09-05 8:39 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 10/21] target/loongarch: Add floating point arithmetic " Song Gao
2021-09-05 9:08 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 11/21] target/loongarch: Add floating point comparison " Song Gao
2021-09-05 9:24 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 12/21] target/loongarch: Add floating point conversion " Song Gao
2021-09-05 9:29 ` Richard Henderson
2021-09-02 12:40 ` [PATCH v4 13/21] target/loongarch: Add floating point move " Song Gao
2021-09-05 9:38 ` Richard Henderson
2021-09-05 9:45 ` Richard Henderson
2021-09-02 12:41 ` [PATCH v4 14/21] target/loongarch: Add floating point load/store " Song Gao
2021-09-05 9:46 ` Richard Henderson
2021-09-02 12:41 ` [PATCH v4 15/21] target/loongarch: Add branch " Song Gao
2021-09-05 9:49 ` Richard Henderson
2021-09-02 12:41 ` [PATCH v4 16/21] target/loongarch: Add disassembler Song Gao
2021-09-02 12:41 ` [PATCH v4 17/21] LoongArch Linux User Emulation Song Gao
2021-09-05 10:04 ` Richard Henderson
2021-09-08 9:50 ` Song Gao
2021-09-10 12:52 ` Richard Henderson
2021-09-11 5:58 ` Song Gao
2021-09-12 12:38 ` Richard Henderson
2021-09-02 12:41 ` [PATCH v4 18/21] default-configs: Add loongarch linux-user support Song Gao
2021-09-02 12:41 ` [PATCH v4 19/21] target/loongarch: Add target build suport Song Gao
2021-09-05 10:05 ` Richard Henderson
2021-09-02 12:41 ` [PATCH v4 20/21] target/loongarch: 'make check-tcg' support Song Gao
2021-09-05 10:06 ` Richard Henderson
2021-09-02 12:41 ` [PATCH v4 21/21] scripts: add loongarch64 binfmt config Song Gao
2021-09-05 10:08 ` Richard Henderson
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