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target-i386: introduce new raise_exception functions

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This patch introduces new versions of raise_exception functions
that receive TB return address as an argument.

Backports commit 9198009529d06b6489b68a7505942cca3a50893f from qemu
This commit is contained in:
Pavel Dovgalyuk 2018-02-15 13:39:28 -05:00 committed by Lioncash
parent 4c726ca49b
commit 56615596e4
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 21 additions and 13 deletions
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4
qemu/target-i386/cpu.h
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@ -1271,8 +1271,12 @@ void do_cpu_sipi(X86CPU *cpu);
/* excp_helper.c */
void QEMU_NORETURN raise_exception(CPUX86State *env, int exception_index);
void QEMU_NORETURN raise_exception_ra(CPUX86State *env, int exception_index,
uintptr_t retaddr);
void QEMU_NORETURN raise_exception_err(CPUX86State *env, int exception_index,
int error_code);
void QEMU_NORETURN raise_exception_err_ra(CPUX86State *env, int exception_index,
int error_code, uintptr_t retaddr);
void QEMU_NORETURN raise_interrupt(CPUX86State *nenv, int intno, int is_int,
int error_code, int next_eip_addend);

30
qemu/target-i386/excp_helper.c
View file

@ -24,14 +24,6 @@
#include "uc_priv.h"
#if 0
#define raise_exception_err(env, a, b) \
do { \
qemu_log("raise_exception line=%d\n", __LINE__); \
(raise_exception_err)(env, a, b); \
} while (0)
#endif
void helper_raise_interrupt(CPUX86State *env, int intno, int next_eip_addend)
{
raise_interrupt(env, intno, 1, 0, next_eip_addend);
@ -94,7 +86,8 @@ static int check_exception(CPUX86State *env, int intno, int *error_code)
*/
static void QEMU_NORETURN raise_interrupt2(CPUX86State *env, int intno,
int is_int, int error_code,
int next_eip_addend)
int next_eip_addend,
uintptr_t retaddr)
{
CPUState *cs = CPU(x86_env_get_cpu(env));
@ -110,7 +103,7 @@ static void QEMU_NORETURN raise_interrupt2(CPUX86State *env, int intno,
env->error_code = error_code;
env->exception_is_int = is_int;
env->exception_next_eip = env->eip + next_eip_addend;
cpu_loop_exit(cs);
cpu_loop_exit_restore(cs, retaddr);
}
/* shortcuts to generate exceptions */
@ -118,16 +111,27 @@ static void QEMU_NORETURN raise_interrupt2(CPUX86State *env, int intno,
void QEMU_NORETURN raise_interrupt(CPUX86State *env, int intno, int is_int,
int error_code, int next_eip_addend)
{
raise_interrupt2(env, intno, is_int, error_code, next_eip_addend);
raise_interrupt2(env, intno, is_int, error_code, next_eip_addend, 0);
}
void raise_exception_err(CPUX86State *env, int exception_index,
int error_code)
{
raise_interrupt2(env, exception_index, 0, error_code, 0);
raise_interrupt2(env, exception_index, 0, error_code, 0, 0);
}
void raise_exception_err_ra(CPUX86State *env, int exception_index,
int error_code, uintptr_t retaddr)
{
raise_interrupt2(env, exception_index, 0, error_code, 0, retaddr);
}
void raise_exception(CPUX86State *env, int exception_index)
{
raise_interrupt2(env, exception_index, 0, 0, 0);
raise_interrupt2(env, exception_index, 0, 0, 0, 0);
}
void raise_exception_ra(CPUX86State *env, int exception_index, uintptr_t retaddr)
{
raise_interrupt2(env, exception_index, 0, 0, 0, retaddr);
}