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Merge pull request #549 from lioncash/tossed 

Throw more unused/unnecessary VFP code out
pull/15/merge
bunnei 11 years ago
parent
7cc24562b4 a734e9fdca
commit
7dfdbe22de
3 changed files with 1 additions and 215 deletions
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  1. 5
      src/core/arm/skyeye_common/vfp/vfp_helper.h
  2. 171
      src/core/arm/skyeye_common/vfp/vfpdouble.cpp
  3. 40
      src/core/arm/skyeye_common/vfp/vfpsingle.cpp

5
src/core/arm/skyeye_common/vfp/vfp_helper.h
View File

@ -381,8 +381,6 @@ static inline int vfp_double_type(vfp_double* s)
return type;
}
u32 vfp_double_normaliseround(ARMul_State* state, int dd, vfp_double* vd, u32 fpscr, u32 exceptions, const char* func);
u32 vfp_estimate_sqrt_significand(u32 exponent, u32 significand);
// A special flag to tell the normalisation code not to normalise.
@ -441,7 +439,6 @@ static inline u32 fls(ARMword x)
}
u32 vfp_double_normaliseroundintern(ARMul_State* state, vfp_double* vd, u32 fpscr, u32 exceptions, const char* func);
u32 vfp_double_multiply(vfp_double* vdd, vfp_double* vdn, vfp_double* vdm, u32 fpscr);
u32 vfp_double_add(vfp_double* vdd, vfp_double* vdn, vfp_double *vdm, u32 fpscr);
u32 vfp_double_fcvtsinterncutting(ARMul_State* state, int sd, vfp_double* dm, u32 fpscr);
u32 vfp_double_normaliseround(ARMul_State* state, int dd, vfp_double* vd, u32 fpscr, u32 exceptions, const char* func);

171
src/core/arm/skyeye_common/vfp/vfpdouble.cpp
View File

@ -83,134 +83,6 @@ static void vfp_double_normalise_denormal(struct vfp_double *vd)
vfp_double_dump("normalise_denormal: out", vd);
}
u32 vfp_double_normaliseroundintern(ARMul_State* state, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func)
{
u64 significand, incr;
int exponent, shift, underflow;
u32 rmode;
vfp_double_dump("pack: in", vd);
/*
* Infinities and NaNs are a special case.
*/
if (vd->exponent == 2047 && (vd->significand == 0 || exceptions))
goto pack;
/*
* Special-case zero.
*/
if (vd->significand == 0) {
vd->exponent = 0;
goto pack;
}
exponent = vd->exponent;
significand = vd->significand;
shift = 32 - fls((ARMword)(significand >> 32));
if (shift == 32)
shift = 64 - fls((ARMword)significand);
if (shift) {
exponent -= shift;
significand <<= shift;
}
#if 1
vd->exponent = exponent;
vd->significand = significand;
vfp_double_dump("pack: normalised", vd);
#endif
/*
* Tiny number?
*/
underflow = exponent < 0;
if (underflow) {
significand = vfp_shiftright64jamming(significand, -exponent);
exponent = 0;
#if 1
vd->exponent = exponent;
vd->significand = significand;
vfp_double_dump("pack: tiny number", vd);
#endif
if (!(significand & ((1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1)))
underflow = 0;
}
/*
* Select rounding increment.
*/
incr = 0;
rmode = fpscr & FPSCR_RMODE_MASK;
if (rmode == FPSCR_ROUND_NEAREST) {
incr = 1ULL << VFP_DOUBLE_LOW_BITS;
if ((significand & (1ULL << (VFP_DOUBLE_LOW_BITS + 1))) == 0)
incr -= 1;
}
else if (rmode == FPSCR_ROUND_TOZERO) {
incr = 0;
}
else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vd->sign != 0))
incr = (1ULL << (VFP_DOUBLE_LOW_BITS + 1)) - 1;
LOG_TRACE(Core_ARM11, "VFP: rounding increment = 0x%08llx\n", incr);
/*
* Is our rounding going to overflow?
*/
if ((significand + incr) < significand) {
exponent += 1;
significand = (significand >> 1) | (significand & 1);
incr >>= 1;
#if 1
vd->exponent = exponent;
vd->significand = significand;
vfp_double_dump("pack: overflow", vd);
#endif
}
/*
* If any of the low bits (which will be shifted out of the
* number) are non-zero, the result is inexact.
*/
if (significand & ((1 << (VFP_DOUBLE_LOW_BITS + 1)) - 1))
exceptions |= FPSCR_IXC;
/*
* Do our rounding.
*/
significand += incr;
/*
* Infinity?
*/
if (exponent >= 2046) {
exceptions |= FPSCR_OFC | FPSCR_IXC;
if (incr == 0) {
vd->exponent = 2045;
vd->significand = 0x7fffffffffffffffULL;
}
else {
vd->exponent = 2047; /* infinity */
vd->significand = 0;
}
}
else {
if (significand >> (VFP_DOUBLE_LOW_BITS + 1) == 0)
exponent = 0;
if (exponent || significand > 0x8000000000000000ULL)
underflow = 0;
if (underflow)
exceptions |= FPSCR_UFC;
vd->exponent = exponent;
vd->significand = significand >> 1;
}
pack:
return 0;
}
u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func)
{
u64 significand, incr;
@ -592,49 +464,6 @@ static u32 vfp_double_fcmpez(ARMul_State* state, int dd, int unused, int dm, u32
return vfp_compare(state, dd, 1, VFP_REG_ZERO, fpscr);
}
u32 vfp_double_fcvtsinterncutting(ARMul_State* state, int sd, struct vfp_double* dm, u32 fpscr) //ichfly for internal use only
{
struct vfp_single vsd;
int tm;
u32 exceptions = 0;
LOG_TRACE(Core_ARM11, "In %s\n", __FUNCTION__);
tm = vfp_double_type(dm);
/*
* If we have a signalling NaN, signal invalid operation.
*/
if (tm == VFP_SNAN)
exceptions = FPSCR_IOC;
if (tm & VFP_DENORMAL)
vfp_double_normalise_denormal(dm);
vsd.sign = dm->sign;
vsd.significand = vfp_hi64to32jamming(dm->significand);
/*
* If we have an infinity or a NaN, the exponent must be 255
*/
if (tm & (VFP_INFINITY | VFP_NAN)) {
vsd.exponent = 255;
if (tm == VFP_QNAN)
vsd.significand |= VFP_SINGLE_SIGNIFICAND_QNAN;
goto pack_nan;
}
else if (tm & VFP_ZERO)
vsd.exponent = 0;
else
vsd.exponent = dm->exponent - (1023 - 127);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fcvts");
pack_nan:
vfp_put_float(state, vfp_single_pack(&vsd), sd);
return exceptions;
}
static u32 vfp_double_fcvts(ARMul_State* state, int sd, int unused, int dm, u32 fpscr)
{
struct vfp_double vdm;

40
src/core/arm/skyeye_common/vfp/vfpsingle.cpp
View File

@ -491,46 +491,6 @@ static u32 vfp_single_fcmpez(ARMul_State* state, int sd, int unused, s32 m, u32
return vfp_compare(state, sd, 1, 0, fpscr);
}
static s64 vfp_single_to_doubleintern(ARMul_State* state, s32 m, u32 fpscr) //ichfly for internal use only
{
struct vfp_single vsm;
struct vfp_double vdd;
int tm;
u32 exceptions = 0;
vfp_single_unpack(&vsm, m);
tm = vfp_single_type(&vsm);
/*
* If we have a signalling NaN, signal invalid operation.
*/
if (tm == VFP_SNAN)
exceptions = FPSCR_IOC;
if (tm & VFP_DENORMAL)
vfp_single_normalise_denormal(&vsm);
vdd.sign = vsm.sign;
vdd.significand = (u64)vsm.significand << 32;
/*
* If we have an infinity or NaN, the exponent must be 2047.
*/
if (tm & (VFP_INFINITY | VFP_NAN)) {
vdd.exponent = 2047;
if (tm == VFP_QNAN)
vdd.significand |= VFP_DOUBLE_SIGNIFICAND_QNAN;
goto pack_nan;
} else if (tm & VFP_ZERO)
vdd.exponent = 0;
else
vdd.exponent = vsm.exponent + (1023 - 127);
pack_nan:
vfp_double_normaliseroundintern(state, &vdd, fpscr, exceptions, "fcvtd");
return vfp_double_pack(&vdd);
}
static u32 vfp_single_fcvtd(ARMul_State* state, int dd, int unused, s32 m, u32 fpscr)
{
struct vfp_single vsm;

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