diff options
Diffstat (limited to 'target-mips')
| -rw-r--r-- | target-mips/cpu.c | 4 | ||||
| -rw-r--r-- | target-mips/cpu.h | 29 | ||||
| -rw-r--r-- | target-mips/helper.c | 3 |
3 files changed, 20 insertions, 16 deletions
diff --git a/target-mips/cpu.c b/target-mips/cpu.c index 37880d20e0..bbfee4509f 100644 --- a/target-mips/cpu.c +++ b/target-mips/cpu.c @@ -58,7 +58,9 @@ static bool mips_cpu_has_work(CPUState *cs) check for interrupts that can be taken. */ if ((cs->interrupt_request & CPU_INTERRUPT_HARD) && cpu_mips_hw_interrupts_pending(env)) { - has_work = true; + if (cpu_mips_hw_interrupts_enabled(env)) { + has_work = true; + } } /* MIPS-MT has the ability to halt the CPU. */ diff --git a/target-mips/cpu.h b/target-mips/cpu.h index f32a0fd737..3799d26d22 100644 --- a/target-mips/cpu.h +++ b/target-mips/cpu.h @@ -637,23 +637,24 @@ static inline int cpu_mmu_index (CPUMIPSState *env, bool ifetch) return env->hflags & MIPS_HFLAG_KSU; } -static inline int cpu_mips_hw_interrupts_pending(CPUMIPSState *env) +static inline bool cpu_mips_hw_interrupts_enabled(CPUMIPSState *env) { - int32_t pending; - int32_t status; - int r; - - if (!(env->CP0_Status & (1 << CP0St_IE)) || - (env->CP0_Status & (1 << CP0St_EXL)) || - (env->CP0_Status & (1 << CP0St_ERL)) || + return (env->CP0_Status & (1 << CP0St_IE)) && + !(env->CP0_Status & (1 << CP0St_EXL)) && + !(env->CP0_Status & (1 << CP0St_ERL)) && + !(env->hflags & MIPS_HFLAG_DM) && /* Note that the TCStatus IXMT field is initialized to zero, and only MT capable cores can set it to one. So we don't need to check for MT capabilities here. */ - (env->active_tc.CP0_TCStatus & (1 << CP0TCSt_IXMT)) || - (env->hflags & MIPS_HFLAG_DM)) { - /* Interrupts are disabled */ - return 0; - } + !(env->active_tc.CP0_TCStatus & (1 << CP0TCSt_IXMT)); +} + +/* Check if there is pending and not masked out interrupt */ +static inline bool cpu_mips_hw_interrupts_pending(CPUMIPSState *env) +{ + int32_t pending; + int32_t status; + bool r; pending = env->CP0_Cause & CP0Ca_IP_mask; status = env->CP0_Status & CP0Ca_IP_mask; @@ -667,7 +668,7 @@ static inline int cpu_mips_hw_interrupts_pending(CPUMIPSState *env) /* A MIPS configured with compatibility or VInt (Vectored Interrupts) treats the pending lines as individual interrupt lines, the status lines are individual masks. */ - r = pending & status; + r = (pending & status) != 0; } return r; } diff --git a/target-mips/helper.c b/target-mips/helper.c index 01c4461573..2d86323911 100644 --- a/target-mips/helper.c +++ b/target-mips/helper.c @@ -759,7 +759,8 @@ bool mips_cpu_exec_interrupt(CPUState *cs, int interrupt_request) MIPSCPU *cpu = MIPS_CPU(cs); CPUMIPSState *env = &cpu->env; - if (cpu_mips_hw_interrupts_pending(env)) { + if (cpu_mips_hw_interrupts_enabled(env) && + cpu_mips_hw_interrupts_pending(env)) { /* Raise it */ cs->exception_index = EXCP_EXT_INTERRUPT; env->error_code = 0; |