@@ -2707,11 +2707,16 @@ uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUState *env)
return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status);
}
+#define float32_two make_float32(0x40000000)
+
float32 HELPER(recps_f32)(float32 a, float32 b, CPUState *env)
{
- float_status *s = &env->vfp.fp_status;
- float32 two = int32_to_float32(2, s);
- return float32_sub(two, float32_mul(a, b, s), s);
+ float_status *s = &env->vfp.standard_fp_status;
+ if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) ||
+ (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
+ return float32_two;
+ }
+ return float32_sub(float32_two, float32_mul(a, b, s), s);
}
float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUState *env)
Correct the handling of edge cases for the VRECPS instruction: * this is a Neon instruction so uses the "standard FPSCR value" * (zero, inf) is a special case which returns 2.0 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target-arm/helper.c | 11 ++++++++--- 1 files changed, 8 insertions(+), 3 deletions(-)