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SH4: sleep instruction bug fix

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fix a bug on 'sleep' instruction, which have caused halt of idle task.
As i386 'hlt' instruction does, it should save PC before sleep.

(Shin-ichiro KAWASAKI)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5220 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-09-15 06:42:30 +00:00
parent 9f4576f08b
commit f24f381b2d
3 changed files with 4 additions and 3 deletions
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2
target-sh4/helper.h
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@ -6,7 +6,7 @@ DEF_HELPER(void, helper_ldtlb, (void))
DEF_HELPER(void, helper_raise_illegal_instruction, (void))
DEF_HELPER(void, helper_raise_slot_illegal_instruction, (void))
DEF_HELPER(void, helper_debug, (void))
DEF_HELPER(void, helper_sleep, (void))
DEF_HELPER(void, helper_sleep, (uint32_t))
DEF_HELPER(void, helper_trapa, (uint32_t))
DEF_HELPER(uint32_t, helper_addv, (uint32_t, uint32_t))

3
target-sh4/op_helper.c
View File

@ -94,10 +94,11 @@ void helper_debug(void)
cpu_loop_exit();
}
void helper_sleep(void)
void helper_sleep(uint32_t next_pc)
{
env->halted = 1;
env->exception_index = EXCP_HLT;
env->pc = next_pc;
cpu_loop_exit();
}

2
target-sh4/translate.c
View File

@ -505,7 +505,7 @@ void _decode_opc(DisasContext * ctx)
return;
case 0x001b: /* sleep */
if (ctx->memidx) {
tcg_gen_helper_0_0(helper_sleep);
tcg_gen_helper_0_1(helper_sleep, tcg_const_i32(ctx->pc + 2));
} else {
tcg_gen_helper_0_0(helper_raise_illegal_instruction);
ctx->bstate = BS_EXCP;