From: Aurelien Jarno Date: Tue, 26 Mar 2013 18:56:01 +0000 (+0100) Subject: target-i386: SSE4.2: fix pcmpgtq instruction X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=da5156cd9a62274839d6fa685cc52614886cc722;p=qmiga%2Fqemu.git target-i386: SSE4.2: fix pcmpgtq instruction The "Intel 64 and IA-32 Architectures Software Developer's Manual" (at least recent versions) clearly says that the comparison is signed. Reviewed-by: Richard Henderson Signed-off-by: Aurelien Jarno --- diff --git a/target-i386/ops_sse.h b/target-i386/ops_sse.h index cad9d758de..0136df9345 100644 --- a/target-i386/ops_sse.h +++ b/target-i386/ops_sse.h @@ -1933,8 +1933,7 @@ void glue(helper_mpsadbw, SUFFIX)(CPUX86State *env, Reg *d, Reg *s, } /* SSE4.2 op helpers */ -/* it's unclear whether signed or unsigned */ -#define FCMPGTQ(d, s) (d > s ? -1 : 0) +#define FCMPGTQ(d, s) ((int64_t)d > (int64_t)s ? -1 : 0) SSE_HELPER_Q(helper_pcmpgtq, FCMPGTQ) static inline int pcmp_elen(CPUX86State *env, int reg, uint32_t ctrl)