diff options
Diffstat (limited to 'target-alpha/helper.c')
| -rw-r--r-- | target-alpha/helper.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target-alpha/helper.c b/target-alpha/helper.c index 7c053a3eae..a8aa782a2a 100644 --- a/target-alpha/helper.c +++ b/target-alpha/helper.c @@ -470,6 +470,50 @@ void alpha_cpu_do_interrupt(CPUState *cs) #endif /* !USER_ONLY */ } +bool alpha_cpu_exec_interrupt(CPUState *cs, int interrupt_request) +{ + AlphaCPU *cpu = ALPHA_CPU(cs); + CPUAlphaState *env = &cpu->env; + int idx = -1; + + /* We never take interrupts while in PALmode. */ + if (env->pal_mode) { + return false; + } + + /* Fall through the switch, collecting the highest priority + interrupt that isn't masked by the processor status IPL. */ + /* ??? This hard-codes the OSF/1 interrupt levels. */ + switch (env->ps & PS_INT_MASK) { + case 0 ... 3: + if (interrupt_request & CPU_INTERRUPT_HARD) { + idx = EXCP_DEV_INTERRUPT; + } + /* FALLTHRU */ + case 4: + if (interrupt_request & CPU_INTERRUPT_TIMER) { + idx = EXCP_CLK_INTERRUPT; + } + /* FALLTHRU */ + case 5: + if (interrupt_request & CPU_INTERRUPT_SMP) { + idx = EXCP_SMP_INTERRUPT; + } + /* FALLTHRU */ + case 6: + if (interrupt_request & CPU_INTERRUPT_MCHK) { + idx = EXCP_MCHK; + } + } + if (idx >= 0) { + cs->exception_index = idx; + env->error_code = 0; + alpha_cpu_do_interrupt(cs); + return true; + } + return false; +} + void alpha_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, int flags) { |