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authorPavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>2015-07-10 12:57:25 +0300
committerRichard Henderson <rth@twiddle.net>2015-09-15 12:28:16 -0700
commitcc33c5d66bb315f77739f761a3f868a7d138c041 (patch)
tree34f98c49a47d365c62b36d5aa77d45670323e40d /target-i386
parent6cad09d2f74d7318f737acaa21b3da49a0c9e670 (diff)
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target-i386: exception handling for div instructions
This patch fixes exception handling for div instructions and removes obsolete PC update from translate.c. Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-i386')
-rw-r--r--target-i386/int_helper.c32
-rw-r--r--target-i386/translate.c8
2 files changed, 16 insertions, 24 deletions
diff --git a/target-i386/int_helper.c b/target-i386/int_helper.c
index b0d78e6..3dcd25f 100644
--- a/target-i386/int_helper.c
+++ b/target-i386/int_helper.c
@@ -48,11 +48,11 @@ void helper_divb_AL(CPUX86State *env, target_ulong t0)
num = (env->regs[R_EAX] & 0xffff);
den = (t0 & 0xff);
if (den == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q = (num / den);
if (q > 0xff) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q &= 0xff;
r = (num % den) & 0xff;
@@ -66,11 +66,11 @@ void helper_idivb_AL(CPUX86State *env, target_ulong t0)
num = (int16_t)env->regs[R_EAX];
den = (int8_t)t0;
if (den == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q = (num / den);
if (q != (int8_t)q) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q &= 0xff;
r = (num % den) & 0xff;
@@ -84,11 +84,11 @@ void helper_divw_AX(CPUX86State *env, target_ulong t0)
num = (env->regs[R_EAX] & 0xffff) | ((env->regs[R_EDX] & 0xffff) << 16);
den = (t0 & 0xffff);
if (den == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q = (num / den);
if (q > 0xffff) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q &= 0xffff;
r = (num % den) & 0xffff;
@@ -103,11 +103,11 @@ void helper_idivw_AX(CPUX86State *env, target_ulong t0)
num = (env->regs[R_EAX] & 0xffff) | ((env->regs[R_EDX] & 0xffff) << 16);
den = (int16_t)t0;
if (den == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q = (num / den);
if (q != (int16_t)q) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q &= 0xffff;
r = (num % den) & 0xffff;
@@ -123,12 +123,12 @@ void helper_divl_EAX(CPUX86State *env, target_ulong t0)
num = ((uint32_t)env->regs[R_EAX]) | ((uint64_t)((uint32_t)env->regs[R_EDX]) << 32);
den = t0;
if (den == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q = (num / den);
r = (num % den);
if (q > 0xffffffff) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
env->regs[R_EAX] = (uint32_t)q;
env->regs[R_EDX] = (uint32_t)r;
@@ -142,12 +142,12 @@ void helper_idivl_EAX(CPUX86State *env, target_ulong t0)
num = ((uint32_t)env->regs[R_EAX]) | ((uint64_t)((uint32_t)env->regs[R_EDX]) << 32);
den = t0;
if (den == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
q = (num / den);
r = (num % den);
if (q != (int32_t)q) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
env->regs[R_EAX] = (uint32_t)q;
env->regs[R_EDX] = (uint32_t)r;
@@ -379,12 +379,12 @@ void helper_divq_EAX(CPUX86State *env, target_ulong t0)
uint64_t r0, r1;
if (t0 == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
r0 = env->regs[R_EAX];
r1 = env->regs[R_EDX];
if (div64(&r0, &r1, t0)) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
env->regs[R_EAX] = r0;
env->regs[R_EDX] = r1;
@@ -395,12 +395,12 @@ void helper_idivq_EAX(CPUX86State *env, target_ulong t0)
uint64_t r0, r1;
if (t0 == 0) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
r0 = env->regs[R_EAX];
r1 = env->regs[R_EDX];
if (idiv64(&r0, &r1, t0)) {
- raise_exception(env, EXCP00_DIVZ);
+ raise_exception_ra(env, EXCP00_DIVZ, GETPC());
}
env->regs[R_EAX] = r0;
env->regs[R_EDX] = r1;
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 3b3335f..827e85c 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -4841,21 +4841,17 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
case 6: /* div */
switch(ot) {
case MO_8:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_divb_AL(cpu_env, cpu_T[0]);
break;
case MO_16:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_divw_AX(cpu_env, cpu_T[0]);
break;
default:
case MO_32:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_divl_EAX(cpu_env, cpu_T[0]);
break;
#ifdef TARGET_X86_64
case MO_64:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_divq_EAX(cpu_env, cpu_T[0]);
break;
#endif
@@ -4864,21 +4860,17 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s,
case 7: /* idiv */
switch(ot) {
case MO_8:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_idivb_AL(cpu_env, cpu_T[0]);
break;
case MO_16:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_idivw_AX(cpu_env, cpu_T[0]);
break;
default:
case MO_32:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_idivl_EAX(cpu_env, cpu_T[0]);
break;
#ifdef TARGET_X86_64
case MO_64:
- gen_jmp_im(pc_start - s->cs_base);
gen_helper_idivq_EAX(cpu_env, cpu_T[0]);
break;
#endif