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Restart interrupts after an exception.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2664 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-04-14 12:56:46 +00:00
parent dcb5b19a4e
commit 16c00cb2c2
2 changed files with 33 additions and 9 deletions
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15
target-mips/op.c
View File

@ -1365,7 +1365,7 @@ void op_mtc0_status (void)
!(env->hflags & MIPS_HFLAG_DM) &&
(val & (1 << CP0St_UM)))
env->hflags |= MIPS_HFLAG_UM;
env->CP0_Status = val;
env->CP0_Status = (env->CP0_Status & ~0xF878FF17) | val;
if (loglevel & CPU_LOG_EXEC)
CALL_FROM_TB2(do_mtc0_status_debug, old, val);
CALL_FROM_TB1(cpu_mips_update_irq, env);
@ -2181,6 +2181,19 @@ void op_save_pc (void)
RETURN();
}
void op_interrupt_restart (void)
{
if (!(env->CP0_Status & (1 << CP0St_EXL)) &&
!(env->CP0_Status & (1 << CP0St_ERL)) &&
!(env->hflags & MIPS_HFLAG_DM) &&
(env->CP0_Status & (1 << CP0St_IE)) &&
(env->CP0_Status & env->CP0_Cause & CP0Ca_IP_mask)) {
env->CP0_Cause &= ~(0x1f << CP0Ca_EC);
CALL_FROM_TB1(do_raise_exception, EXCP_EXT_INTERRUPT);
}
RETURN();
}
void op_raise_exception (void)
{
CALL_FROM_TB1(do_raise_exception, PARAM1);

27
target-mips/translate.c
View File

@ -5234,15 +5234,26 @@ gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
if (env->singlestep_enabled) {
save_cpu_state(ctxp, ctx.bstate == BS_NONE);
gen_op_debug();
goto done_generating;
} else {
switch (ctx.bstate) {
case BS_EXCP:
gen_op_interrupt_restart();
break;
case BS_STOP:
gen_op_interrupt_restart();
/* Fall through. */
case BS_NONE:
save_cpu_state(ctxp, 0);
gen_goto_tb(&ctx, 0, ctx.pc);
break;
case BS_BRANCH:
default:
break;
}
gen_op_reset_T0();
/* Generate the return instruction. */
gen_op_exit_tb();
}
else if (ctx.bstate != BS_BRANCH && ctx.bstate != BS_EXCP) {
save_cpu_state(ctxp, 0);
gen_goto_tb(&ctx, 0, ctx.pc);
}
gen_op_reset_T0();
/* Generate the return instruction */
gen_op_exit_tb();
done_generating:
*gen_opc_ptr = INDEX_op_end;
if (search_pc) {