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HLT, MWAIT and MONITOR insn fixes (initial patch by Alexander Graf)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4746 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2008-06-18 09:32:32 +00:00
parent 17ca26e791
commit 94451178b6
3 changed files with 21 additions and 11 deletions
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4
target-i386/helper.h
View File

@ -60,9 +60,9 @@ DEF_HELPER(void, helper_sysexit, (void))
DEF_HELPER(void, helper_syscall, (int next_eip_addend))
DEF_HELPER(void, helper_sysret, (int dflag))
#endif
DEF_HELPER(void, helper_hlt, (void))
DEF_HELPER(void, helper_hlt, (int next_eip_addend))
DEF_HELPER(void, helper_monitor, (target_ulong ptr))
DEF_HELPER(void, helper_mwait, (void))
DEF_HELPER(void, helper_mwait, (int next_eip_addend))
DEF_HELPER(void, helper_debug, (void))
DEF_HELPER(void, helper_raise_interrupt, (int intno, int next_eip_addend))
DEF_HELPER(void, helper_raise_exception, (int exception_index))

18
target-i386/op_helper.c
View File

@ -4547,16 +4547,22 @@ void helper_idivq_EAX(target_ulong t0)
}
#endif
void helper_hlt(void)
static void do_hlt(void)
{
helper_svm_check_intercept_param(SVM_EXIT_HLT, 0);
env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
env->halted = 1;
env->exception_index = EXCP_HLT;
cpu_loop_exit();
}
void helper_hlt(int next_eip_addend)
{
helper_svm_check_intercept_param(SVM_EXIT_HLT, 0);
EIP += next_eip_addend;
do_hlt();
}
void helper_monitor(target_ulong ptr)
{
if ((uint32_t)ECX != 0)
@ -4565,17 +4571,19 @@ void helper_monitor(target_ulong ptr)
helper_svm_check_intercept_param(SVM_EXIT_MONITOR, 0);
}
void helper_mwait(void)
void helper_mwait(int next_eip_addend)
{
if ((uint32_t)ECX != 0)
raise_exception(EXCP0D_GPF);
helper_svm_check_intercept_param(SVM_EXIT_MWAIT, 0);
EIP += next_eip_addend;
/* XXX: not complete but not completely erroneous */
if (env->cpu_index != 0 || env->next_cpu != NULL) {
/* more than one CPU: do not sleep because another CPU may
wake this one */
} else {
helper_hlt();
do_hlt();
}
}

10
target-i386/translate.c
View File

@ -6420,8 +6420,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
} else {
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_jmp_im(s->pc - s->cs_base);
tcg_gen_helper_0_0(helper_hlt);
gen_jmp_im(pc_start - s->cs_base);
tcg_gen_helper_0_1(helper_hlt, tcg_const_i32(s->pc - pc_start));
s->is_jmp = 3;
}
break;
@ -6519,6 +6519,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
if (!(s->cpuid_ext_features & CPUID_EXT_MONITOR) ||
s->cpl != 0)
goto illegal_op;
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_jmp_im(pc_start - s->cs_base);
#ifdef TARGET_X86_64
if (s->aflag == 2) {
@ -6541,8 +6543,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_set_cc_op(s->cc_op);
s->cc_op = CC_OP_DYNAMIC;
}
gen_jmp_im(s->pc - s->cs_base);
tcg_gen_helper_0_0(helper_mwait);
gen_jmp_im(pc_start - s->cs_base);
tcg_gen_helper_0_1(helper_mwait, tcg_const_i32(s->pc - pc_start));
gen_eob(s);
break;
default: