diff options
Diffstat (limited to 'src/arch/arm/insts/vfp.hh')
| -rw-r--r-- | src/arch/arm/insts/vfp.hh | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/arch/arm/insts/vfp.hh b/src/arch/arm/insts/vfp.hh index 11ae8ed96..6ded88670 100644 --- a/src/arch/arm/insts/vfp.hh +++ b/src/arch/arm/insts/vfp.hh @@ -309,11 +309,17 @@ fixFpDFpSDest(FPSCR fpscr, double val) } static inline uint64_t -vfpFpSToFixed(float val, bool isSigned, bool half, uint8_t imm) +vfpFpSToFixed(float val, bool isSigned, bool half, + uint8_t imm, bool rzero = true) { - fesetround(FeRoundZero); + int rmode = fegetround(); + fesetround(FeRoundNearest); val = val * powf(2.0, imm); __asm__ __volatile__("" : "=m" (val) : "m" (val)); + if (rzero) + fesetround(FeRoundZero); + else + fesetround(rmode); feclearexcept(FeAllExceptions); __asm__ __volatile__("" : "=m" (val) : "m" (val)); float origVal = val; @@ -410,12 +416,17 @@ vfpSFixedToFpS(FPSCR fpscr, int32_t val, bool half, uint8_t imm) } static inline uint64_t -vfpFpDToFixed(double val, bool isSigned, bool half, uint8_t imm) +vfpFpDToFixed(double val, bool isSigned, bool half, + uint8_t imm, bool rzero = true) { + int rmode = fegetround(); fesetround(FeRoundNearest); val = val * pow(2.0, imm); __asm__ __volatile__("" : "=m" (val) : "m" (val)); - fesetround(FeRoundZero); + if (rzero) + fesetround(FeRoundZero); + else + fesetround(rmode); feclearexcept(FeAllExceptions); __asm__ __volatile__("" : "=m" (val) : "m" (val)); double origVal = val; |