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| author | Sebastian Valle <subv2112@gmail.com> | 2017-05-22 19:16:53 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-05-22 19:16:53 +0200 |
| commit | c291db72e74fa1514bfe6706b8a2004bbe2b31e7 (patch) | |
| tree | f0e29867eb0002a0efd09fbccef53bd212530b39 | |
| parent | Merge pull request #2406 from Subv/session_disconnect (diff) | |
| parent | fixup! Dyncom/VFP: Convert denormal outputs into 0 when the FTZ flag is enabled. (diff) | |
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| -rw-r--r-- | src/core/arm/skyeye_common/vfp/vfpdouble.cpp | 13 | ||||
| -rw-r--r-- | src/core/arm/skyeye_common/vfp/vfpsingle.cpp | 13 |
2 files changed, 26 insertions, 0 deletions
diff --git a/src/core/arm/skyeye_common/vfp/vfpdouble.cpp b/src/core/arm/skyeye_common/vfp/vfpdouble.cpp index 7b035f56a..735cf1a09 100644 --- a/src/core/arm/skyeye_common/vfp/vfpdouble.cpp +++ b/src/core/arm/skyeye_common/vfp/vfpdouble.cpp @@ -134,6 +134,19 @@ u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct vfp_double* vd, #endif if (!(significand & ((1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1))) underflow = 0; + + int type = vfp_double_type(vd); + + if ((type & VFP_DENORMAL) && (fpscr & FPSCR_FLUSH_TO_ZERO)) { + // Flush denormal to positive 0 + significand = 0; + + vd->sign = 0; + vd->significand = significand; + + underflow = 0; + exceptions |= FPSCR_UFC; + } } /* diff --git a/src/core/arm/skyeye_common/vfp/vfpsingle.cpp b/src/core/arm/skyeye_common/vfp/vfpsingle.cpp index 6b4cb8efa..1f9142abc 100644 --- a/src/core/arm/skyeye_common/vfp/vfpsingle.cpp +++ b/src/core/arm/skyeye_common/vfp/vfpsingle.cpp @@ -137,6 +137,19 @@ u32 vfp_single_normaliseround(ARMul_State* state, int sd, struct vfp_single* vs, #endif if (!(significand & ((1 << (VFP_SINGLE_LOW_BITS + 1)) - 1))) underflow = 0; + + int type = vfp_single_type(vs); + + if ((type & VFP_DENORMAL) && (fpscr & FPSCR_FLUSH_TO_ZERO)) { + // Flush denormal to positive 0 + significand = 0; + + vs->sign = 0; + vs->significand = significand; + + underflow = 0; + exceptions |= FPSCR_UFC; + } } /* |