From: Song Gao <gaosong@loongson.cn>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, thuth@redhat.com, chenhuacai@gmail.com,
philmd@redhat.com, richard.henderson@linaro.org,
laurent@vivier.eu, maobibo@loongson.cn, yangxiaojuan@loongson.cn,
alistair.francis@wdc.com, pbonzini@redhat.com,
alex.bennee@linaro.org
Subject: [PATCH v2 04/22] target/loongarch: Add interrupt handling support
Date: Wed, 21 Jul 2021 17:53:00 +0800 [thread overview]
Message-ID: <1626861198-6133-5-git-send-email-gaosong@loongson.cn> (raw)
In-Reply-To: <1626861198-6133-1-git-send-email-gaosong@loongson.cn>
This patch introduces functions loongarch_cpu_do_interrupt()
and loongarch_cpu_exec_interrupt()
Signed-off-by: Song Gao <gaosong@loongson.cn>
---
target/loongarch/cpu.c | 23 +++++++++++++++++++++++
target/loongarch/cpu.h | 25 +++++++++++++++++++++++++
2 files changed, 48 insertions(+)
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 4db2d0f..8eaa778 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -79,6 +79,28 @@ static void loongarch_cpu_set_pc(CPUState *cs, vaddr value)
env->active_tc.PC = value & ~(target_ulong)1;
}
+bool loongarch_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
+{
+ if (interrupt_request & CPU_INTERRUPT_HARD) {
+ LoongArchCPU *cpu = LOONGARCH_CPU(cs);
+ CPULoongArchState *env = &cpu->env;
+
+ if (cpu_loongarch_hw_interrupts_enabled(env) &&
+ cpu_loongarch_hw_interrupts_pending(env)) {
+ cs->exception_index = EXCP_INTE;
+ env->error_code = 0;
+ loongarch_cpu_do_interrupt(cs);
+ return true;
+ }
+ }
+ return false;
+}
+
+void loongarch_cpu_do_interrupt(CPUState *cs)
+{
+ cs->exception_index = EXCP_NONE;
+}
+
#ifdef CONFIG_TCG
static void loongarch_cpu_synchronize_from_tb(CPUState *cs,
const TranslationBlock *tb)
@@ -246,6 +268,7 @@ static Property loongarch_cpu_properties[] = {
static struct TCGCPUOps loongarch_tcg_ops = {
.initialize = loongarch_tcg_init,
.synchronize_from_tb = loongarch_cpu_synchronize_from_tb,
+ .cpu_exec_interrupt = loongarch_cpu_exec_interrupt,
};
#endif /* CONFIG_TCG */
diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
index ab1aeb6..1db8bb5 100644
--- a/target/loongarch/cpu.h
+++ b/target/loongarch/cpu.h
@@ -231,6 +231,31 @@ int cpu_loongarch_signal_handler(int host_signum, void *pinfo, void *puc);
#include "exec/memattrs.h"
+void loongarch_cpu_do_interrupt(CPUState *cpu);
+bool loongarch_cpu_exec_interrupt(CPUState *cpu, int int_req);
+
+static inline bool cpu_loongarch_hw_interrupts_enabled(CPULoongArchState *env)
+{
+ bool ret = 0;
+
+ ret = env->CSR_CRMD & (1 << CSR_CRMD_IE_SHIFT);
+
+ return ret;
+}
+
+static inline bool cpu_loongarch_hw_interrupts_pending(CPULoongArchState *env)
+{
+ int32_t pending;
+ int32_t status;
+ bool r;
+
+ pending = env->CSR_ESTAT & CSR_ESTAT_IPMASK;
+ status = env->CSR_ECFG & CSR_ECFG_IPMASK;
+
+ r = (pending & status) != 0;
+ return r;
+}
+
void loongarch_tcg_init(void);
void loongarch_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
--
1.8.3.1
next prev parent reply other threads:[~2021-07-21 9:54 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 9:52 [PATCH v2 00/22] Add LoongArch linux-user emulation support Song Gao
2021-07-21 9:52 ` [PATCH v2 01/22] target/loongarch: Add README Song Gao
2021-07-21 9:52 ` [PATCH v2 02/22] target/loongarch: Add CSR registers definition Song Gao
2021-07-21 9:52 ` [PATCH v2 03/22] target/loongarch: Add core definition Song Gao
2021-07-22 22:43 ` Richard Henderson
2021-07-26 8:47 ` Song Gao
2021-07-26 15:32 ` Richard Henderson
2021-07-21 9:53 ` Song Gao [this message]
2021-07-22 22:47 ` [PATCH v2 04/22] target/loongarch: Add interrupt handling support Richard Henderson
2021-07-26 9:23 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 05/22] target/loongarch: Add memory management support Song Gao
2021-07-22 22:48 ` Richard Henderson
2021-07-26 9:25 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 06/22] target/loongarch: Add main translation routines Song Gao
2021-07-22 23:50 ` Richard Henderson
2021-07-26 9:39 ` Song Gao
2021-07-26 15:35 ` Richard Henderson
2021-07-21 9:53 ` [PATCH v2 07/22] target/loongarch: Add fixed point arithmetic instruction translation Song Gao
2021-07-21 17:38 ` Philippe Mathieu-Daudé
2021-07-21 17:49 ` Philippe Mathieu-Daudé
2021-07-22 7:41 ` Song Gao
2021-07-23 0:46 ` Richard Henderson
2021-07-26 11:56 ` Song Gao
2021-07-26 15:53 ` Richard Henderson
2021-07-27 1:51 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 08/22] target/loongarch: Add fixed point shift " Song Gao
2021-07-23 0:51 ` Richard Henderson
2021-07-26 11:57 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 09/22] target/loongarch: Add fixed point bit " Song Gao
2021-07-21 17:46 ` Philippe Mathieu-Daudé
2021-07-22 8:17 ` Song Gao
2021-07-23 1:29 ` Richard Henderson
2021-07-26 12:22 ` Song Gao
2021-07-26 16:39 ` Richard Henderson
2021-07-21 9:53 ` [PATCH v2 10/22] target/loongarch: Add fixed point load/store " Song Gao
2021-07-23 1:45 ` Richard Henderson
2021-07-26 12:25 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 11/22] target/loongarch: Add fixed point atomic " Song Gao
2021-07-23 1:49 ` Richard Henderson
2021-07-26 12:25 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 12/22] target/loongarch: Add fixed point extra " Song Gao
2021-07-23 5:12 ` Richard Henderson
2021-07-26 12:57 ` Song Gao
2021-07-26 16:42 ` Richard Henderson
2021-07-27 1:46 ` Song Gao
2021-08-04 7:40 ` Song Gao
2021-08-04 7:51 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 13/22] target/loongarch: Add floating point arithmetic " Song Gao
2021-07-23 5:44 ` Richard Henderson
2021-07-27 7:17 ` Song Gao
2021-07-27 16:12 ` Richard Henderson
2021-07-28 1:18 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 14/22] target/loongarch: Add floating point comparison " Song Gao
2021-07-23 6:11 ` Richard Henderson
2021-07-27 7:56 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 15/22] target/loongarch: Add floating point conversion " Song Gao
2021-07-23 6:16 ` Richard Henderson
2021-07-27 7:57 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 16/22] target/loongarch: Add floating point move " Song Gao
2021-07-23 6:29 ` Richard Henderson
2021-07-27 8:06 ` Song Gao
2021-08-12 9:20 ` Song Gao
2021-08-12 19:31 ` Richard Henderson
2021-07-21 9:53 ` [PATCH v2 17/22] target/loongarch: Add floating point load/store " Song Gao
2021-07-23 6:34 ` Richard Henderson
2021-07-27 8:07 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 18/22] target/loongarch: Add branch " Song Gao
2021-07-23 6:38 ` Richard Henderson
2021-07-27 8:07 ` Song Gao
2021-07-21 9:53 ` [PATCH v2 19/22] target/loongarch: Add disassembler Song Gao
2021-07-23 6:40 ` Richard Henderson
2021-08-12 10:33 ` Philippe Mathieu-Daudé
2021-07-21 9:53 ` [PATCH v2 20/22] LoongArch Linux User Emulation Song Gao
2021-07-21 9:53 ` [PATCH v2 21/22] configs: Add loongarch linux-user config Song Gao
2021-07-23 6:43 ` Richard Henderson
2021-07-21 9:53 ` [PATCH v2 22/22] target/loongarch: Add target build suport Song Gao
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