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linux-user/i386: Split out maybe_handle_vm86_trap 

Reduce the number of ifdefs within cpu_loop().

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-10-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2022-01-07 13:32:28 -08:00 committed by Laurent Vivier
parent 0edf34c93e
commit 1ade5b2fed
1 changed files with 15 additions and 16 deletions
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31
linux-user/i386/cpu_loop.c
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@ -198,6 +198,17 @@ static void emulate_vsyscall(CPUX86State *env)
}
#endif
static bool maybe_handle_vm86_trap(CPUX86State *env, int trapnr)
{
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
return true;
}
#endif
return false;
}
void cpu_loop(CPUX86State *env)
{
CPUState *cs = env_cpu(env);
@ -259,12 +270,9 @@ void cpu_loop(CPUX86State *env)
break;
case EXCP0D_GPF:
/* XXX: potential problem if ABI32 */
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_fault(env);
if (maybe_handle_vm86_trap(env, trapnr)) {
break;
}
#endif
gen_signal(env, TARGET_SIGSEGV, TARGET_SI_KERNEL, 0);
break;
case EXCP0E_PAGE:
@ -274,22 +282,16 @@ void cpu_loop(CPUX86State *env)
env->cr[2]);
break;
case EXCP00_DIVZ:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
if (maybe_handle_vm86_trap(env, trapnr)) {
break;
}
#endif
gen_signal(env, TARGET_SIGFPE, TARGET_FPE_INTDIV, env->eip);
break;
case EXCP01_DB:
case EXCP03_INT3:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
if (maybe_handle_vm86_trap(env, trapnr)) {
break;
}
#endif
if (trapnr == EXCP01_DB) {
gen_signal(env, TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->eip);
} else {
@ -298,12 +300,9 @@ void cpu_loop(CPUX86State *env)
break;
case EXCP04_INTO:
case EXCP05_BOUND:
#ifndef TARGET_X86_64
if (env->eflags & VM_MASK) {
handle_vm86_trap(env, trapnr);
if (maybe_handle_vm86_trap(env, trapnr)) {
break;
}
#endif
gen_signal(env, TARGET_SIGSEGV, TARGET_SI_KERNEL, 0);
break;
case EXCP06_ILLOP: