This patch introduces functions loongarch_cpu_do_interrupt()
and loongarch_cpu_exec_interrupt()
Signed-off-by: Song Gao <gaos...@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
