Commit e1ed709f authored by Richard Henderson's avatar Richard Henderson
Browse files

target/i386: Convert to HAVE_CMPXCHG128 



Reviewed-by: default avatarEmilio G. Cota <cota@braap.org>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
parent e6cd4bb5

target/i386/mem_helper.c

+4 −5
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include "exec/exec-all.h"

#include "exec/cpu_ldst.h"

#include "qemu/int128.h"

#include "qemu/atomic128.h"

#include "tcg.h"



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) {

        raise_exception_ra(env, EXCP0D_GPF, ra);

    } else {

#ifndef CONFIG_ATOMIC128

        cpu_loop_exit_atomic(ENV_GET_CPU(env), ra);

#else

    } else if (HAVE_CMPXCHG128) {

        int eflags = cpu_cc_compute_all(env, CC_OP);



        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;

        }

        CC_SRC = eflags;

#endif

    } else {

        cpu_loop_exit_atomic(ENV_GET_CPU(env), ra);

    }

}

#endif