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Merge pull request #290 from lioncash/vsub 

armemu: Backport some VFP fixes from 3dmoo.
This commit is contained in:
bunnei 2014-12-16 23:22:58 -05:00
parent cdfa7157eb 9c127f4a01
commit ec9ac2f51a
1 changed files with 5 additions and 2 deletions
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7
src/core/arm/skyeye_common/vfp/vfpsingle.cpp
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@ -614,7 +614,7 @@ static u32 vfp_single_ftoui(ARMul_State* state, int sd, int unused, s32 m, u32 f
exceptions |= FPSCR_IDC; exceptions |= FPSCR_IDC;
if (tm & VFP_NAN) if (tm & VFP_NAN)
vsm.sign = 0; vsm.sign = 1;
if (vsm.exponent >= 127 + 32) { if (vsm.exponent >= 127 + 32) {
d = vsm.sign ? 0 : 0xffffffff; d = vsm.sign ? 0 : 0xffffffff;
@ -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. * 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);
} }
/* /*