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target/i386: Split out gen_cmpxchg8b, gen_cmpxchg16b

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Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-11-09 15:22:15 +11:00
parent b5deff74d1
commit 6218c177af
1 changed files with 31 additions and 17 deletions
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46
target/i386/tcg/translate.c
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@ -2993,6 +2993,34 @@ static void gen_sty_env_A0(DisasContext *s, int offset, bool align)
#include "emit.c.inc"
#include "decode-new.c.inc"
static void gen_cmpxchg8b(DisasContext *s, CPUX86State *env, int modrm)
{
gen_lea_modrm(env, s, modrm);
if ((s->prefix & PREFIX_LOCK) &&
(tb_cflags(s->base.tb) & CF_PARALLEL)) {
gen_helper_cmpxchg8b(cpu_env, s->A0);
} else {
gen_helper_cmpxchg8b_unlocked(cpu_env, s->A0);
}
set_cc_op(s, CC_OP_EFLAGS);
}
#ifdef TARGET_X86_64
static void gen_cmpxchg16b(DisasContext *s, CPUX86State *env, int modrm)
{
gen_lea_modrm(env, s, modrm);
if ((s->prefix & PREFIX_LOCK) &&
(tb_cflags(s->base.tb) & CF_PARALLEL)) {
gen_helper_cmpxchg16b(cpu_env, s->A0);
} else {
gen_helper_cmpxchg16b_unlocked(cpu_env, s->A0);
}
set_cc_op(s, CC_OP_EFLAGS);
}
#endif
/* convert one instruction. s->base.is_jmp is set if the translation must
be stopped. Return the next pc value */
static bool disas_insn(DisasContext *s, CPUState *cpu)
@ -3844,28 +3872,14 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
if (!(s->cpuid_ext_features & CPUID_EXT_CX16)) {
goto illegal_op;
}
gen_lea_modrm(env, s, modrm);
if ((s->prefix & PREFIX_LOCK) &&
(tb_cflags(s->base.tb) & CF_PARALLEL)) {
gen_helper_cmpxchg16b(cpu_env, s->A0);
} else {
gen_helper_cmpxchg16b_unlocked(cpu_env, s->A0);
}
set_cc_op(s, CC_OP_EFLAGS);
gen_cmpxchg16b(s, env, modrm);
break;
}
#endif
if (!(s->cpuid_features & CPUID_CX8)) {
goto illegal_op;
}
gen_lea_modrm(env, s, modrm);
if ((s->prefix & PREFIX_LOCK) &&
(tb_cflags(s->base.tb) & CF_PARALLEL)) {
gen_helper_cmpxchg8b(cpu_env, s->A0);
} else {
gen_helper_cmpxchg8b_unlocked(cpu_env, s->A0);
}
set_cc_op(s, CC_OP_EFLAGS);
gen_cmpxchg8b(s, env, modrm);
break;
case 7: /* RDSEED */