From fc1792e9aa36227ee9994757974f9397684e1a48 Mon Sep 17 00:00:00 2001 From: Ildar Isaev Date: Thu, 5 Feb 2015 13:37:25 +0000 Subject: target-arm: fix for exponent comparison in recpe_f64 f64 exponent in HELPER(recpe_f64) should be compared to 2045 rather than 1023 (FPRecipEstimate in ARMV8 spec). This fixes incorrect underflow handling when flushing denormals to zero in the FRECPE instructions operating on 64-bit values. Signed-off-by: Ildar Isaev Signed-off-by: Peter Maydell --- target-arm/helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'target-arm/helper.c') diff --git a/target-arm/helper.c b/target-arm/helper.c index d930021c13..1a1a00577e 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -6526,7 +6526,7 @@ float64 HELPER(recpe_f64)(float64 input, void *fpstp) } else { return float64_set_sign(float64_maxnorm, float64_is_neg(f64)); } - } else if (f64_exp >= 1023 && fpst->flush_to_zero) { + } else if (f64_exp >= 2045 && fpst->flush_to_zero) { float_raise(float_flag_underflow, fpst); return float64_set_sign(float64_zero, float64_is_neg(f64)); } -- cgit v1.2.3