diff options
Diffstat (limited to 'target-i386')
| -rw-r--r-- | target-i386/TODO | 1 | ||||
| -rw-r--r-- | target-i386/ops_sse.h | 9 |
2 files changed, 7 insertions, 3 deletions
diff --git a/target-i386/TODO b/target-i386/TODO index c8ada075d0..a8d69cf87f 100644 --- a/target-i386/TODO +++ b/target-i386/TODO @@ -15,7 +15,6 @@ Correctness issues: - DRx register support - CR0.AC emulation - SSE alignment checks -- fix SSE min/max with nans Optimizations/Features: diff --git a/target-i386/ops_sse.h b/target-i386/ops_sse.h index 47dde78f89..8ed231d554 100644 --- a/target-i386/ops_sse.h +++ b/target-i386/ops_sse.h @@ -584,10 +584,15 @@ void helper_ ## name ## sd (Reg *d, Reg *s)\ #define FPU_SUB(size, a, b) float ## size ## _sub(a, b, &env->sse_status) #define FPU_MUL(size, a, b) float ## size ## _mul(a, b, &env->sse_status) #define FPU_DIV(size, a, b) float ## size ## _div(a, b, &env->sse_status) -#define FPU_MIN(size, a, b) (a) < (b) ? (a) : (b) -#define FPU_MAX(size, a, b) (a) > (b) ? (a) : (b) #define FPU_SQRT(size, a, b) float ## size ## _sqrt(b, &env->sse_status) +/* Note that the choice of comparison op here is important to get the + * special cases right: for min and max Intel specifies that (-0,0), + * (NaN, anything) and (anything, NaN) return the second argument. + */ +#define FPU_MIN(size, a, b) float ## size ## _lt(a, b, &env->sse_status) ? (a) : (b) +#define FPU_MAX(size, a, b) float ## size ## _lt(b, a, &env->sse_status) ? (a) : (b) + SSE_HELPER_S(add, FPU_ADD) SSE_HELPER_S(sub, FPU_SUB) SSE_HELPER_S(mul, FPU_MUL) |