From 2ed03c10e03bbd0f513d157c577f1c75ae9ede5b Mon Sep 17 00:00:00 2001 From: Normmatt Date: Tue, 16 Dec 2014 05:53:19 -0500 Subject: armemu: Fix FSUBS bug where NaN shouldn't be negated --- src/core/arm/skyeye_common/vfp/vfpsingle.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'src/core/arm/skyeye_common/vfp/vfpsingle.cpp') diff --git a/src/core/arm/skyeye_common/vfp/vfpsingle.cpp b/src/core/arm/skyeye_common/vfp/vfpsingle.cpp index 87190049..f5410fd9 100644 --- a/src/core/arm/skyeye_common/vfp/vfpsingle.cpp +++ b/src/core/arm/skyeye_common/vfp/vfpsingle.cpp @@ -1148,7 +1148,10 @@ static u32 vfp_single_fsub(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr) /* * Subtraction is addition with one sign inverted. */ - return vfp_single_fadd(state, sd, sn, vfp_single_packed_negate(m), fpscr); + if (m != 0x7FC00000) // Only negate if m isn't NaN. + m = vfp_single_packed_negate(m); + + return vfp_single_fadd(state, sd, sn, m, fpscr); } /* -- cgit v1.2.3