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target-i386: exception handling for memory helpers

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This patch fixes exception handling for memory helpers
and removes obsolete PC update from translate.c.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Pavel Dovgalyuk 2015-07-10 12:57:30 +03:00 • committed by Richard Henderson
parent cc33c5d66b
commit 2afbdf8480
2 changed files with 18 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

39
target-i386/mem_helper.c
View file

@ -60,13 +60,14 @@ void helper_cmpxchg8b(CPUX86State *env, target_ulong a0)
int eflags;
eflags = cpu_cc_compute_all(env, CC_OP);
d = cpu_ldq_data(env, a0);
d = cpu_ldq_data_ra(env, a0, GETPC());
if (d == (((uint64_t)env->regs[R_EDX] << 32) | (uint32_t)env->regs[R_EAX])) {
cpu_stq_data(env, a0, ((uint64_t)env->regs[R_ECX] << 32) | (uint32_t)env->regs[R_EBX]);
cpu_stq_data_ra(env, a0, ((uint64_t)env->regs[R_ECX] << 32)
| (uint32_t)env->regs[R_EBX], GETPC());
eflags |= CC_Z;
} else {
/* always do the store */
cpu_stq_data(env, a0, d);
cpu_stq_data_ra(env, a0, d, GETPC());
env->regs[R_EDX] = (uint32_t)(d >> 32);
env->regs[R_EAX] = (uint32_t)d;
eflags &= ~CC_Z;
@ -81,19 +82,19 @@ void helper_cmpxchg16b(CPUX86State *env, target_ulong a0)
int eflags;
if ((a0 & 0xf) != 0) {
raise_exception(env, EXCP0D_GPF);
raise_exception_ra(env, EXCP0D_GPF, GETPC());
}
eflags = cpu_cc_compute_all(env, CC_OP);
d0 = cpu_ldq_data(env, a0);
d1 = cpu_ldq_data(env, a0 + 8);
d0 = cpu_ldq_data_ra(env, a0, GETPC());
d1 = cpu_ldq_data_ra(env, a0 + 8, GETPC());
if (d0 == env->regs[R_EAX] && d1 == env->regs[R_EDX]) {
cpu_stq_data(env, a0, env->regs[R_EBX]);
cpu_stq_data(env, a0 + 8, env->regs[R_ECX]);
cpu_stq_data_ra(env, a0, env->regs[R_EBX], GETPC());
cpu_stq_data_ra(env, a0 + 8, env->regs[R_ECX], GETPC());
eflags |= CC_Z;
} else {
/* always do the store */
cpu_stq_data(env, a0, d0);
cpu_stq_data(env, a0 + 8, d1);
cpu_stq_data_ra(env, a0, d0, GETPC());
cpu_stq_data_ra(env, a0 + 8, d1, GETPC());
env->regs[R_EDX] = d1;
env->regs[R_EAX] = d0;
eflags &= ~CC_Z;
@ -106,11 +107,11 @@ void helper_boundw(CPUX86State *env, target_ulong a0, int v)
{
int low, high;
low = cpu_ldsw_data(env, a0);
high = cpu_ldsw_data(env, a0 + 2);
low = cpu_ldsw_data_ra(env, a0, GETPC());
high = cpu_ldsw_data_ra(env, a0 + 2, GETPC());
v = (int16_t)v;
if (v < low || v > high) {
raise_exception(env, EXCP05_BOUND);
raise_exception_ra(env, EXCP05_BOUND, GETPC());
}
}
@ -118,10 +119,10 @@ void helper_boundl(CPUX86State *env, target_ulong a0, int v)
{
int low, high;
low = cpu_ldl_data(env, a0);
high = cpu_ldl_data(env, a0 + 4);
low = cpu_ldl_data_ra(env, a0, GETPC());
high = cpu_ldl_data_ra(env, a0 + 4, GETPC());
if (v < low || v > high) {
raise_exception(env, EXCP05_BOUND);
raise_exception_ra(env, EXCP05_BOUND, GETPC());
}
}
@ -141,11 +142,7 @@ void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
if (retaddr) {
/* now we have a real cpu fault */
cpu_restore_state(cs, retaddr);
}
raise_exception_err(env, cs->exception_index, env->error_code);
raise_exception_err_ra(env, cs->exception_index, env->error_code, retaddr);
}
}
#endif