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target/i386: Convert to HAVE_CMPXCHG128 

Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2018-08-15 16:47:59 -07:00
parent e6cd4bb59b
commit e1ed709fbe
1 changed files with 4 additions and 5 deletions
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9
target/i386/mem_helper.c
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@ -23,6 +23,7 @@
#include "exec/exec-all.h" #include "exec/exec-all.h"
#include "exec/cpu_ldst.h" #include "exec/cpu_ldst.h"
#include "qemu/int128.h" #include "qemu/int128.h"
#include "qemu/atomic128.h"
#include "tcg.h" #include "tcg.h"
void helper_cmpxchg8b_unlocked(CPUX86State *env, target_ulong a0) void helper_cmpxchg8b_unlocked(CPUX86State *env, target_ulong a0)
@ -137,10 +138,7 @@ void helper_cmpxchg16b(CPUX86State *env, target_ulong a0)
if ((a0 & 0xf) != 0) { if ((a0 & 0xf) != 0) {
raise_exception_ra(env, EXCP0D_GPF, ra); raise_exception_ra(env, EXCP0D_GPF, ra);
} else { } else if (HAVE_CMPXCHG128) {
#ifndef CONFIG_ATOMIC128
cpu_loop_exit_atomic(ENV_GET_CPU(env), ra);
#else
int eflags = cpu_cc_compute_all(env, CC_OP); int eflags = cpu_cc_compute_all(env, CC_OP);
Int128 cmpv = int128_make128(env->regs[R_EAX], env->regs[R_EDX]); Int128 cmpv = int128_make128(env->regs[R_EAX], env->regs[R_EDX]);
@ -159,7 +157,8 @@ void helper_cmpxchg16b(CPUX86State *env, target_ulong a0)
eflags &= ~CC_Z; eflags &= ~CC_Z;
} }
CC_SRC = eflags; CC_SRC = eflags;
#endif } else {
cpu_loop_exit_atomic(ENV_GET_CPU(env), ra);
} }
} }
#endif #endif