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Merge pull request #1810 from JayFoxRox/fix-float-exceptions

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Fix float exceptions
This commit is contained in:
bunnei 2016-05-26 18:28:00 -04:00
commit 859c36c269
3 changed files with 130 additions and 91 deletions
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20
src/core/arm/skyeye_common/vfp/vfp_helper.h
View file

@ -271,8 +271,9 @@ inline int vfp_single_type(const vfp_single* s)
// Unpack a single-precision float. Note that this returns the magnitude // Unpack a single-precision float. Note that this returns the magnitude
// of the single-precision float mantissa with the 1. if necessary, // of the single-precision float mantissa with the 1. if necessary,
// aligned to bit 30. // aligned to bit 30.
inline void vfp_single_unpack(vfp_single* s, s32 val, u32* fpscr) inline u32 vfp_single_unpack(vfp_single* s, s32 val, u32 fpscr)
{ {
u32 exceptions = 0;
s->sign = vfp_single_packed_sign(val) >> 16, s->sign = vfp_single_packed_sign(val) >> 16,
s->exponent = vfp_single_packed_exponent(val); s->exponent = vfp_single_packed_exponent(val);
@ -283,12 +284,13 @@ inline void vfp_single_unpack(vfp_single* s, s32 val, u32* fpscr)
// If flush-to-zero mode is enabled, turn the denormal into zero. // If flush-to-zero mode is enabled, turn the denormal into zero.
// On a VFPv2 architecture, the sign of the zero is always positive. // On a VFPv2 architecture, the sign of the zero is always positive.
if ((*fpscr & FPSCR_FLUSH_TO_ZERO) != 0 && (vfp_single_type(s) & VFP_DENORMAL) != 0) { if ((fpscr & FPSCR_FLUSH_TO_ZERO) != 0 && (vfp_single_type(s) & VFP_DENORMAL) != 0) {
s->sign = 0; s->sign = 0;
s->exponent = 0; s->exponent = 0;
s->significand = 0; s->significand = 0;
*fpscr |= FPSCR_IDC; exceptions |= FPSCR_IDC;
} }
return exceptions;
} }
// Re-pack a single-precision float. This assumes that the float is // Re-pack a single-precision float. This assumes that the float is
@ -302,7 +304,7 @@ inline s32 vfp_single_pack(const vfp_single* s)
} }
u32 vfp_single_normaliseround(ARMul_State* state, int sd, vfp_single* vs, u32 fpscr, u32 exceptions, const char* func); u32 vfp_single_normaliseround(ARMul_State* state, int sd, vfp_single* vs, u32 fpscr, const char* func);
// Double-precision // Double-precision
struct vfp_double { struct vfp_double {
@ -357,8 +359,9 @@ inline int vfp_double_type(const vfp_double* s)
// Unpack a double-precision float. Note that this returns the magnitude // Unpack a double-precision float. Note that this returns the magnitude
// of the double-precision float mantissa with the 1. if necessary, // of the double-precision float mantissa with the 1. if necessary,
// aligned to bit 62. // aligned to bit 62.
inline void vfp_double_unpack(vfp_double* s, s64 val, u32* fpscr) inline u32 vfp_double_unpack(vfp_double* s, s64 val, u32 fpscr)
{ {
u32 exceptions = 0;
s->sign = vfp_double_packed_sign(val) >> 48; s->sign = vfp_double_packed_sign(val) >> 48;
s->exponent = vfp_double_packed_exponent(val); s->exponent = vfp_double_packed_exponent(val);
@ -369,12 +372,13 @@ inline void vfp_double_unpack(vfp_double* s, s64 val, u32* fpscr)
// If flush-to-zero mode is enabled, turn the denormal into zero. // If flush-to-zero mode is enabled, turn the denormal into zero.
// On a VFPv2 architecture, the sign of the zero is always positive. // On a VFPv2 architecture, the sign of the zero is always positive.
if ((*fpscr & FPSCR_FLUSH_TO_ZERO) != 0 && (vfp_double_type(s) & VFP_DENORMAL) != 0) { if ((fpscr & FPSCR_FLUSH_TO_ZERO) != 0 && (vfp_double_type(s) & VFP_DENORMAL) != 0) {
s->sign = 0; s->sign = 0;
s->exponent = 0; s->exponent = 0;
s->significand = 0; s->significand = 0;
*fpscr |= FPSCR_IDC; exceptions |= FPSCR_IDC;
} }
return exceptions;
} }
// Re-pack a double-precision float. This assumes that the float is // Re-pack a double-precision float. This assumes that the float is
@ -447,4 +451,4 @@ inline u32 fls(u32 x)
u32 vfp_double_multiply(vfp_double* vdd, vfp_double* vdn, vfp_double* vdm, u32 fpscr); 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_add(vfp_double* vdd, vfp_double* vdn, vfp_double *vdm, u32 fpscr);
u32 vfp_double_normaliseround(ARMul_State* state, int dd, vfp_double* vd, u32 fpscr, u32 exceptions, const char* func); u32 vfp_double_normaliseround(ARMul_State* state, int dd, vfp_double* vd, u32 fpscr, const char* func);

101
src/core/arm/skyeye_common/vfp/vfpdouble.cpp
View file

@ -85,11 +85,12 @@ static void vfp_double_normalise_denormal(struct vfp_double *vd)
vfp_double_dump("normalise_denormal: out", vd); vfp_double_dump("normalise_denormal: out", vd);
} }
u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func) u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct vfp_double *vd, u32 fpscr, const char *func)
{ {
u64 significand, incr; u64 significand, incr;
int exponent, shift, underflow; int exponent, shift, underflow;
u32 rmode; u32 rmode;
u32 exceptions = 0;
vfp_double_dump("pack: in", vd); vfp_double_dump("pack: in", vd);
@ -291,8 +292,9 @@ static u32 vfp_double_fsqrt(ARMul_State* state, int dd, int unused, int dm, u32
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double vdm, vdd, *vdp; vfp_double vdm, vdd, *vdp;
int ret, tm; int ret, tm;
u32 exceptions = 0;
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
tm = vfp_double_type(&vdm); tm = vfp_double_type(&vdm);
if (tm & (VFP_NAN|VFP_INFINITY)) { if (tm & (VFP_NAN|VFP_INFINITY)) {
@ -369,7 +371,8 @@ sqrt_invalid:
} }
vdd.significand = vfp_shiftright64jamming(vdd.significand, 1); vdd.significand = vfp_shiftright64jamming(vdd.significand, 1);
return vfp_double_normaliseround(state, dd, &vdd, fpscr, 0, "fsqrt"); exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, "fsqrt");
return exceptions;
} }
/* /*
@ -475,7 +478,7 @@ static u32 vfp_double_fcvts(ARMul_State* state, int sd, int unused, int dm, u32
u32 exceptions = 0; u32 exceptions = 0;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
tm = vfp_double_type(&vdm); tm = vfp_double_type(&vdm);
@ -504,7 +507,8 @@ static u32 vfp_double_fcvts(ARMul_State* state, int sd, int unused, int dm, u32
else else
vsd.exponent = vdm.exponent - (1023 - 127); vsd.exponent = vdm.exponent - (1023 - 127);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fcvts"); exceptions |= vfp_single_normaliseround(state, sd, &vsd, fpscr, "fcvts");
return exceptions;
pack_nan: pack_nan:
vfp_put_float(state, vfp_single_pack(&vsd), sd); vfp_put_float(state, vfp_single_pack(&vsd), sd);
@ -514,6 +518,7 @@ pack_nan:
static u32 vfp_double_fuito(ARMul_State* state, int dd, int unused, int dm, u32 fpscr) static u32 vfp_double_fuito(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
{ {
struct vfp_double vdm; struct vfp_double vdm;
u32 exceptions = 0;
u32 m = vfp_get_float(state, dm); u32 m = vfp_get_float(state, dm);
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
@ -521,12 +526,14 @@ static u32 vfp_double_fuito(ARMul_State* state, int dd, int unused, int dm, u32
vdm.exponent = 1023 + 63 - 1; vdm.exponent = 1023 + 63 - 1;
vdm.significand = (u64)m; vdm.significand = (u64)m;
return vfp_double_normaliseround(state, dd, &vdm, fpscr, 0, "fuito"); exceptions |= vfp_double_normaliseround(state, dd, &vdm, fpscr, "fuito");
return exceptions;
} }
static u32 vfp_double_fsito(ARMul_State* state, int dd, int unused, int dm, u32 fpscr) static u32 vfp_double_fsito(ARMul_State* state, int dd, int unused, int dm, u32 fpscr)
{ {
struct vfp_double vdm; struct vfp_double vdm;
u32 exceptions = 0;
u32 m = vfp_get_float(state, dm); u32 m = vfp_get_float(state, dm);
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
@ -534,7 +541,8 @@ static u32 vfp_double_fsito(ARMul_State* state, int dd, int unused, int dm, u32
vdm.exponent = 1023 + 63 - 1; vdm.exponent = 1023 + 63 - 1;
vdm.significand = vdm.sign ? (~m + 1) : m; vdm.significand = vdm.sign ? (~m + 1) : m;
return vfp_double_normaliseround(state, dd, &vdm, fpscr, 0, "fsito"); exceptions |= vfp_double_normaliseround(state, dd, &vdm, fpscr, "fsito");
return exceptions;
} }
static u32 vfp_double_ftoui(ARMul_State* state, int sd, int unused, int dm, u32 fpscr) static u32 vfp_double_ftoui(ARMul_State* state, int sd, int unused, int dm, u32 fpscr)
@ -545,7 +553,7 @@ static u32 vfp_double_ftoui(ARMul_State* state, int sd, int unused, int dm, u32
int tm; int tm;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
/* /*
* Do we have a denormalised number? * Do we have a denormalised number?
@ -626,7 +634,7 @@ static u32 vfp_double_ftosi(ARMul_State* state, int sd, int unused, int dm, u32
int tm; int tm;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
vfp_double_dump("VDM", &vdm); vfp_double_dump("VDM", &vdm);
/* /*
@ -892,21 +900,21 @@ static u32
vfp_double_multiply_accumulate(ARMul_State* state, int dd, int dn, int dm, u32 fpscr, u32 negate, const char *func) vfp_double_multiply_accumulate(ARMul_State* state, int dd, int dn, int dm, u32 fpscr, u32 negate, const char *func)
{ {
struct vfp_double vdd, vdp, vdn, vdm; struct vfp_double vdd, vdp, vdn, vdm;
u32 exceptions; u32 exceptions = 0;
vfp_double_unpack(&vdn, vfp_get_double(state, dn), &fpscr); exceptions |= vfp_double_unpack(&vdn, vfp_get_double(state, dn), fpscr);
if (vdn.exponent == 0 && vdn.significand) if (vdn.exponent == 0 && vdn.significand)
vfp_double_normalise_denormal(&vdn); vfp_double_normalise_denormal(&vdn);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
if (vdm.exponent == 0 && vdm.significand) if (vdm.exponent == 0 && vdm.significand)
vfp_double_normalise_denormal(&vdm); vfp_double_normalise_denormal(&vdm);
exceptions = vfp_double_multiply(&vdp, &vdn, &vdm, fpscr); exceptions |= vfp_double_multiply(&vdp, &vdn, &vdm, fpscr);
if (negate & NEG_MULTIPLY) if (negate & NEG_MULTIPLY)
vdp.sign = vfp_sign_negate(vdp.sign); vdp.sign = vfp_sign_negate(vdp.sign);
vfp_double_unpack(&vdn, vfp_get_double(state, dd), &fpscr); exceptions |= vfp_double_unpack(&vdn, vfp_get_double(state, dd), fpscr);
if (vdn.exponent == 0 && vdn.significand != 0) if (vdn.exponent == 0 && vdn.significand != 0)
vfp_double_normalise_denormal(&vdn); vfp_double_normalise_denormal(&vdn);
@ -915,7 +923,8 @@ vfp_double_multiply_accumulate(ARMul_State* state, int dd, int dn, int dm, u32 f
exceptions |= vfp_double_add(&vdd, &vdn, &vdp, fpscr); exceptions |= vfp_double_add(&vdd, &vdn, &vdp, fpscr);
return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, func); exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, func);
return exceptions;
} }
/* /*
@ -964,19 +973,21 @@ static u32 vfp_double_fnmsc(ARMul_State* state, int dd, int dn, int dm, u32 fpsc
static u32 vfp_double_fmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr) static u32 vfp_double_fmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
{ {
struct vfp_double vdd, vdn, vdm; struct vfp_double vdd, vdn, vdm;
u32 exceptions; u32 exceptions = 0;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdn, vfp_get_double(state, dn), &fpscr); exceptions |= vfp_double_unpack(&vdn, vfp_get_double(state, dn), fpscr);
if (vdn.exponent == 0 && vdn.significand) if (vdn.exponent == 0 && vdn.significand)
vfp_double_normalise_denormal(&vdn); vfp_double_normalise_denormal(&vdn);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
if (vdm.exponent == 0 && vdm.significand) if (vdm.exponent == 0 && vdm.significand)
vfp_double_normalise_denormal(&vdm); vfp_double_normalise_denormal(&vdm);
exceptions = vfp_double_multiply(&vdd, &vdn, &vdm, fpscr); exceptions |= vfp_double_multiply(&vdd, &vdn, &vdm, fpscr);
return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fmul");
exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, "fmul");
return exceptions;
} }
/* /*
@ -985,21 +996,22 @@ static u32 vfp_double_fmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
static u32 vfp_double_fnmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr) static u32 vfp_double_fnmul(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
{ {
struct vfp_double vdd, vdn, vdm; struct vfp_double vdd, vdn, vdm;
u32 exceptions; u32 exceptions = 0;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdn, vfp_get_double(state, dn), &fpscr); exceptions |= vfp_double_unpack(&vdn, vfp_get_double(state, dn), fpscr);
if (vdn.exponent == 0 && vdn.significand) if (vdn.exponent == 0 && vdn.significand)
vfp_double_normalise_denormal(&vdn); vfp_double_normalise_denormal(&vdn);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
if (vdm.exponent == 0 && vdm.significand) if (vdm.exponent == 0 && vdm.significand)
vfp_double_normalise_denormal(&vdm); vfp_double_normalise_denormal(&vdm);
exceptions = vfp_double_multiply(&vdd, &vdn, &vdm, fpscr); exceptions |= vfp_double_multiply(&vdd, &vdn, &vdm, fpscr);
vdd.sign = vfp_sign_negate(vdd.sign); vdd.sign = vfp_sign_negate(vdd.sign);
return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fnmul"); exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, "fnmul");
return exceptions;
} }
/* /*
@ -1008,20 +1020,21 @@ static u32 vfp_double_fnmul(ARMul_State* state, int dd, int dn, int dm, u32 fpsc
static u32 vfp_double_fadd(ARMul_State* state, int dd, int dn, int dm, u32 fpscr) static u32 vfp_double_fadd(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
{ {
struct vfp_double vdd, vdn, vdm; struct vfp_double vdd, vdn, vdm;
u32 exceptions; u32 exceptions = 0;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdn, vfp_get_double(state, dn), &fpscr); exceptions |= vfp_double_unpack(&vdn, vfp_get_double(state, dn), fpscr);
if (vdn.exponent == 0 && vdn.significand) if (vdn.exponent == 0 && vdn.significand)
vfp_double_normalise_denormal(&vdn); vfp_double_normalise_denormal(&vdn);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
if (vdm.exponent == 0 && vdm.significand) if (vdm.exponent == 0 && vdm.significand)
vfp_double_normalise_denormal(&vdm); vfp_double_normalise_denormal(&vdm);
exceptions = vfp_double_add(&vdd, &vdn, &vdm, fpscr); exceptions |= vfp_double_add(&vdd, &vdn, &vdm, fpscr);
return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fadd"); exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, "fadd");
return exceptions;
} }
/* /*
@ -1030,14 +1043,14 @@ static u32 vfp_double_fadd(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
static u32 vfp_double_fsub(ARMul_State* state, int dd, int dn, int dm, u32 fpscr) static u32 vfp_double_fsub(ARMul_State* state, int dd, int dn, int dm, u32 fpscr)
{ {
struct vfp_double vdd, vdn, vdm; struct vfp_double vdd, vdn, vdm;
u32 exceptions; u32 exceptions = 0;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdn, vfp_get_double(state, dn), &fpscr); exceptions |= vfp_double_unpack(&vdn, vfp_get_double(state, dn), fpscr);
if (vdn.exponent == 0 && vdn.significand) if (vdn.exponent == 0 && vdn.significand)
vfp_double_normalise_denormal(&vdn); vfp_double_normalise_denormal(&vdn);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
if (vdm.exponent == 0 && vdm.significand) if (vdm.exponent == 0 && vdm.significand)
vfp_double_normalise_denormal(&vdm); vfp_double_normalise_denormal(&vdm);
@ -1046,9 +1059,10 @@ static u32 vfp_double_fsub(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
*/ */
vdm.sign = vfp_sign_negate(vdm.sign); vdm.sign = vfp_sign_negate(vdm.sign);
exceptions = vfp_double_add(&vdd, &vdn, &vdm, fpscr); exceptions |= vfp_double_add(&vdd, &vdn, &vdm, fpscr);
return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fsub"); exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, "fsub");
return exceptions;
} }
/* /*
@ -1061,8 +1075,8 @@ static u32 vfp_double_fdiv(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
int tm, tn; int tm, tn;
LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__); LOG_TRACE(Core_ARM11, "In %s", __FUNCTION__);
vfp_double_unpack(&vdn, vfp_get_double(state, dn), &fpscr); exceptions |= vfp_double_unpack(&vdn, vfp_get_double(state, dn), fpscr);
vfp_double_unpack(&vdm, vfp_get_double(state, dm), &fpscr); exceptions |= vfp_double_unpack(&vdm, vfp_get_double(state, dm), fpscr);
vdd.sign = vdn.sign ^ vdm.sign; vdd.sign = vdn.sign ^ vdm.sign;
@ -1131,16 +1145,18 @@ static u32 vfp_double_fdiv(ARMul_State* state, int dd, int dn, int dm, u32 fpscr
} }
vdd.significand |= (reml != 0); vdd.significand |= (reml != 0);
} }
return vfp_double_normaliseround(state, dd, &vdd, fpscr, 0, "fdiv");
exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, "fdiv");
return exceptions;
vdn_nan: vdn_nan:
exceptions = vfp_propagate_nan(&vdd, &vdn, &vdm, fpscr); exceptions |= vfp_propagate_nan(&vdd, &vdn, &vdm, fpscr);
pack: pack:
vfp_put_double(state, vfp_double_pack(&vdd), dd); vfp_put_double(state, vfp_double_pack(&vdd), dd);
return exceptions; return exceptions;
vdm_nan: vdm_nan:
exceptions = vfp_propagate_nan(&vdd, &vdm, &vdn, fpscr); exceptions |= vfp_propagate_nan(&vdd, &vdm, &vdn, fpscr);
goto pack; goto pack;
zero: zero:
@ -1149,7 +1165,7 @@ zero:
goto pack; goto pack;
divzero: divzero:
exceptions = FPSCR_DZC; exceptions |= FPSCR_DZC;
infinity: infinity:
vdd.exponent = 2047; vdd.exponent = 2047;
vdd.significand = 0; vdd.significand = 0;
@ -1157,7 +1173,8 @@ infinity:
invalid: invalid:
vfp_put_double(state, vfp_double_pack(&vfp_double_default_qnan), dd); vfp_put_double(state, vfp_double_pack(&vfp_double_default_qnan), dd);
return FPSCR_IOC; exceptions |= FPSCR_IOC;
return exceptions;
} }
static struct op fops[] = { static struct op fops[] = {

100
src/core/arm/skyeye_common/vfp/vfpsingle.cpp
View file

@ -89,10 +89,11 @@ static void vfp_single_normalise_denormal(struct vfp_single *vs)
} }
u32 vfp_single_normaliseround(ARMul_State* state, int sd, struct vfp_single *vs, u32 fpscr, u32 exceptions, const char *func) u32 vfp_single_normaliseround(ARMul_State* state, int sd, struct vfp_single *vs, u32 fpscr, const char *func)
{ {
u32 significand, incr, rmode; u32 significand, incr, rmode;
int exponent, shift, underflow; int exponent, shift, underflow;
u32 exceptions = 0;
vfp_single_dump("pack: in", vs); vfp_single_dump("pack: in", vs);
@ -334,8 +335,9 @@ static u32 vfp_single_fsqrt(ARMul_State* state, int sd, int unused, s32 m, u32 f
{ {
struct vfp_single vsm, vsd, *vsp; struct vfp_single vsm, vsd, *vsp;
int ret, tm; int ret, tm;
u32 exceptions = 0;
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
tm = vfp_single_type(&vsm); tm = vfp_single_type(&vsm);
if (tm & (VFP_NAN|VFP_INFINITY)) { if (tm & (VFP_NAN|VFP_INFINITY)) {
vsp = &vsd; vsp = &vsd;
@ -408,7 +410,8 @@ sqrt_invalid:
} }
vsd.significand = vfp_shiftright32jamming(vsd.significand, 1); vsd.significand = vfp_shiftright32jamming(vsd.significand, 1);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, 0, "fsqrt"); exceptions |= vfp_single_normaliseround(state, sd, &vsd, fpscr, "fsqrt");
return exceptions;
} }
/* /*
@ -503,7 +506,7 @@ static u32 vfp_single_fcvtd(ARMul_State* state, int dd, int unused, s32 m, u32 f
int tm; int tm;
u32 exceptions = 0; u32 exceptions = 0;
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
tm = vfp_single_type(&vsm); tm = vfp_single_type(&vsm);
@ -511,7 +514,7 @@ static u32 vfp_single_fcvtd(ARMul_State* state, int dd, int unused, s32 m, u32 f
* If we have a signalling NaN, signal invalid operation. * If we have a signalling NaN, signal invalid operation.
*/ */
if (tm == VFP_SNAN) if (tm == VFP_SNAN)
exceptions = FPSCR_IOC; exceptions |= FPSCR_IOC;
if (tm & VFP_DENORMAL) if (tm & VFP_DENORMAL)
vfp_single_normalise_denormal(&vsm); vfp_single_normalise_denormal(&vsm);
@ -532,7 +535,8 @@ static u32 vfp_single_fcvtd(ARMul_State* state, int dd, int unused, s32 m, u32 f
else else
vdd.exponent = vsm.exponent + (1023 - 127); vdd.exponent = vsm.exponent + (1023 - 127);
return vfp_double_normaliseround(state, dd, &vdd, fpscr, exceptions, "fcvtd"); exceptions |= vfp_double_normaliseround(state, dd, &vdd, fpscr, "fcvtd");
return exceptions;
pack_nan: pack_nan:
vfp_put_double(state, vfp_double_pack(&vdd), dd); vfp_put_double(state, vfp_double_pack(&vdd), dd);
@ -542,23 +546,27 @@ pack_nan:
static u32 vfp_single_fuito(ARMul_State* state, int sd, int unused, s32 m, u32 fpscr) static u32 vfp_single_fuito(ARMul_State* state, int sd, int unused, s32 m, u32 fpscr)
{ {
struct vfp_single vs; struct vfp_single vs;
u32 exceptions = 0;
vs.sign = 0; vs.sign = 0;
vs.exponent = 127 + 31 - 1; vs.exponent = 127 + 31 - 1;
vs.significand = (u32)m; vs.significand = (u32)m;
return vfp_single_normaliseround(state, sd, &vs, fpscr, 0, "fuito"); exceptions |= vfp_single_normaliseround(state, sd, &vs, fpscr, "fuito");
return exceptions;
} }
static u32 vfp_single_fsito(ARMul_State* state, int sd, int unused, s32 m, u32 fpscr) static u32 vfp_single_fsito(ARMul_State* state, int sd, int unused, s32 m, u32 fpscr)
{ {
struct vfp_single vs; struct vfp_single vs;
u32 exceptions = 0;
vs.sign = (m & 0x80000000) >> 16; vs.sign = (m & 0x80000000) >> 16;
vs.exponent = 127 + 31 - 1; vs.exponent = 127 + 31 - 1;
vs.significand = vs.sign ? -m : m; vs.significand = vs.sign ? -m : m;
return vfp_single_normaliseround(state, sd, &vs, fpscr, 0, "fsito"); exceptions |= vfp_single_normaliseround(state, sd, &vs, fpscr, "fsito");
return exceptions;
} }
static u32 vfp_single_ftoui(ARMul_State* state, int sd, int unused, s32 m, u32 fpscr) static u32 vfp_single_ftoui(ARMul_State* state, int sd, int unused, s32 m, u32 fpscr)
@ -568,7 +576,7 @@ static u32 vfp_single_ftoui(ARMul_State* state, int sd, int unused, s32 m, u32 f
int rmode = fpscr & FPSCR_RMODE_MASK; int rmode = fpscr & FPSCR_RMODE_MASK;
int tm; int tm;
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
vfp_single_dump("VSM", &vsm); vfp_single_dump("VSM", &vsm);
/* /*
@ -583,7 +591,7 @@ static u32 vfp_single_ftoui(ARMul_State* state, int sd, int unused, s32 m, u32 f
if (vsm.exponent >= 127 + 32) { if (vsm.exponent >= 127 + 32) {
d = vsm.sign ? 0 : 0xffffffff; d = vsm.sign ? 0 : 0xffffffff;
exceptions = FPSCR_IOC; exceptions |= FPSCR_IOC;
} else if (vsm.exponent >= 127) { } else if (vsm.exponent >= 127) {
int shift = 127 + 31 - vsm.exponent; int shift = 127 + 31 - vsm.exponent;
u32 rem, incr = 0; u32 rem, incr = 0;
@ -648,7 +656,7 @@ static u32 vfp_single_ftosi(ARMul_State* state, int sd, int unused, s32 m, u32 f
int rmode = fpscr & FPSCR_RMODE_MASK; int rmode = fpscr & FPSCR_RMODE_MASK;
int tm; int tm;
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
vfp_single_dump("VSM", &vsm); vfp_single_dump("VSM", &vsm);
/* /*
@ -774,7 +782,7 @@ vfp_single_fadd_nonnumber(struct vfp_single *vsd, struct vfp_single *vsn,
/* /*
* different signs -> invalid * different signs -> invalid
*/ */
exceptions = FPSCR_IOC; exceptions |= FPSCR_IOC;
vsp = &vfp_single_default_qnan; vsp = &vfp_single_default_qnan;
} else { } else {
/* /*
@ -921,27 +929,27 @@ static u32
vfp_single_multiply_accumulate(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr, u32 negate, const char *func) vfp_single_multiply_accumulate(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr, u32 negate, const char *func)
{ {
vfp_single vsd, vsp, vsn, vsm; vfp_single vsd, vsp, vsn, vsm;
u32 exceptions; u32 exceptions = 0;
s32 v; s32 v;
v = vfp_get_float(state, sn); v = vfp_get_float(state, sn);
LOG_TRACE(Core_ARM11, "s%u = %08x", sn, v); LOG_TRACE(Core_ARM11, "s%u = %08x", sn, v);
vfp_single_unpack(&vsn, v, &fpscr); exceptions |= vfp_single_unpack(&vsn, v, fpscr);
if (vsn.exponent == 0 && vsn.significand) if (vsn.exponent == 0 && vsn.significand)
vfp_single_normalise_denormal(&vsn); vfp_single_normalise_denormal(&vsn);
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
if (vsm.exponent == 0 && vsm.significand) if (vsm.exponent == 0 && vsm.significand)
vfp_single_normalise_denormal(&vsm); vfp_single_normalise_denormal(&vsm);
exceptions = vfp_single_multiply(&vsp, &vsn, &vsm, fpscr); exceptions |= vfp_single_multiply(&vsp, &vsn, &vsm, fpscr);
if (negate & NEG_MULTIPLY) if (negate & NEG_MULTIPLY)
vsp.sign = vfp_sign_negate(vsp.sign); vsp.sign = vfp_sign_negate(vsp.sign);
v = vfp_get_float(state, sd); v = vfp_get_float(state, sd);
LOG_TRACE(Core_ARM11, "s%u = %08x", sd, v); LOG_TRACE(Core_ARM11, "s%u = %08x", sd, v);
vfp_single_unpack(&vsn, v, &fpscr); exceptions |= vfp_single_unpack(&vsn, v, fpscr);
if (vsn.exponent == 0 && vsn.significand != 0) if (vsn.exponent == 0 && vsn.significand != 0)
vfp_single_normalise_denormal(&vsn); vfp_single_normalise_denormal(&vsn);
@ -950,7 +958,8 @@ vfp_single_multiply_accumulate(ARMul_State* state, int sd, int sn, s32 m, u32 fp
exceptions |= vfp_single_add(&vsd, &vsn, &vsp, fpscr); exceptions |= vfp_single_add(&vsd, &vsn, &vsp, fpscr);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, func); exceptions |= vfp_single_normaliseround(state, sd, &vsd, fpscr, func);
return exceptions;
} }
/* /*
@ -962,8 +971,10 @@ vfp_single_multiply_accumulate(ARMul_State* state, int sd, int sn, s32 m, u32 fp
*/ */
static u32 vfp_single_fmac(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr) static u32 vfp_single_fmac(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
{ {
u32 exceptions = 0;
LOG_TRACE(Core_ARM11, "s%u = %08x", sn, sd); LOG_TRACE(Core_ARM11, "s%u = %08x", sn, sd);
return vfp_single_multiply_accumulate(state, sd, sn, m, fpscr, 0, "fmac"); exceptions |= vfp_single_multiply_accumulate(state, sd, sn, m, fpscr, 0, "fmac");
return exceptions;
} }
/* /*
@ -1000,21 +1011,23 @@ static u32 vfp_single_fnmsc(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr
static u32 vfp_single_fmul(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr) static u32 vfp_single_fmul(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
{ {
struct vfp_single vsd, vsn, vsm; struct vfp_single vsd, vsn, vsm;
u32 exceptions; u32 exceptions = 0;
s32 n = vfp_get_float(state, sn); s32 n = vfp_get_float(state, sn);
LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n); LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n);
vfp_single_unpack(&vsn, n, &fpscr); exceptions |= vfp_single_unpack(&vsn, n, fpscr);
if (vsn.exponent == 0 && vsn.significand) if (vsn.exponent == 0 && vsn.significand)
vfp_single_normalise_denormal(&vsn); vfp_single_normalise_denormal(&vsn);
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
if (vsm.exponent == 0 && vsm.significand) if (vsm.exponent == 0 && vsm.significand)
vfp_single_normalise_denormal(&vsm); vfp_single_normalise_denormal(&vsm);
exceptions = vfp_single_multiply(&vsd, &vsn, &vsm, fpscr); exceptions |= vfp_single_multiply(&vsd, &vsn, &vsm, fpscr);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fmul");
exceptions |= vfp_single_normaliseround(state, sd, &vsd, fpscr, "fmul");
return exceptions;
} }
/* /*
@ -1023,22 +1036,24 @@ static u32 vfp_single_fmul(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
static u32 vfp_single_fnmul(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr) static u32 vfp_single_fnmul(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
{ {
struct vfp_single vsd, vsn, vsm; struct vfp_single vsd, vsn, vsm;
u32 exceptions; u32 exceptions = 0;
s32 n = vfp_get_float(state, sn); s32 n = vfp_get_float(state, sn);
LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n); LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n);
vfp_single_unpack(&vsn, n, &fpscr); exceptions |= vfp_single_unpack(&vsn, n, fpscr);
if (vsn.exponent == 0 && vsn.significand) if (vsn.exponent == 0 && vsn.significand)
vfp_single_normalise_denormal(&vsn); vfp_single_normalise_denormal(&vsn);
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
if (vsm.exponent == 0 && vsm.significand) if (vsm.exponent == 0 && vsm.significand)
vfp_single_normalise_denormal(&vsm); vfp_single_normalise_denormal(&vsm);
exceptions = vfp_single_multiply(&vsd, &vsn, &vsm, fpscr); exceptions |= vfp_single_multiply(&vsd, &vsn, &vsm, fpscr);
vsd.sign = vfp_sign_negate(vsd.sign); vsd.sign = vfp_sign_negate(vsd.sign);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fnmul");
exceptions |= vfp_single_normaliseround(state, sd, &vsd, fpscr, "fnmul");
return exceptions;
} }
/* /*
@ -1047,7 +1062,7 @@ static u32 vfp_single_fnmul(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr
static u32 vfp_single_fadd(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr) static u32 vfp_single_fadd(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
{ {
struct vfp_single vsd, vsn, vsm; struct vfp_single vsd, vsn, vsm;
u32 exceptions; u32 exceptions = 0;
s32 n = vfp_get_float(state, sn); s32 n = vfp_get_float(state, sn);
LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n); LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n);
@ -1055,17 +1070,18 @@ static u32 vfp_single_fadd(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
/* /*
* Unpack and normalise denormals. * Unpack and normalise denormals.
*/ */
vfp_single_unpack(&vsn, n, &fpscr); exceptions |= vfp_single_unpack(&vsn, n, fpscr);
if (vsn.exponent == 0 && vsn.significand) if (vsn.exponent == 0 && vsn.significand)
vfp_single_normalise_denormal(&vsn); vfp_single_normalise_denormal(&vsn);
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
if (vsm.exponent == 0 && vsm.significand) if (vsm.exponent == 0 && vsm.significand)
vfp_single_normalise_denormal(&vsm); vfp_single_normalise_denormal(&vsm);
exceptions = vfp_single_add(&vsd, &vsn, &vsm, fpscr); exceptions |= vfp_single_add(&vsd, &vsn, &vsm, fpscr);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, exceptions, "fadd"); exceptions |= vfp_single_normaliseround(state, sd, &vsd, fpscr, "fadd");
return exceptions;
} }
/* /*
@ -1095,8 +1111,8 @@ static u32 vfp_single_fdiv(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n); LOG_TRACE(Core_ARM11, "s%u = %08x", sn, n);
vfp_single_unpack(&vsn, n, &fpscr); exceptions |= vfp_single_unpack(&vsn, n, fpscr);
vfp_single_unpack(&vsm, m, &fpscr); exceptions |= vfp_single_unpack(&vsm, m, fpscr);
vsd.sign = vsn.sign ^ vsm.sign; vsd.sign = vsn.sign ^ vsm.sign;
@ -1162,16 +1178,17 @@ static u32 vfp_single_fdiv(ARMul_State* state, int sd, int sn, s32 m, u32 fpscr)
if ((vsd.significand & 0x3f) == 0) if ((vsd.significand & 0x3f) == 0)
vsd.significand |= ((u64)vsm.significand * vsd.significand != (u64)vsn.significand << 32); vsd.significand |= ((u64)vsm.significand * vsd.significand != (u64)vsn.significand << 32);
return vfp_single_normaliseround(state, sd, &vsd, fpscr, 0, "fdiv"); exceptions |= vfp_single_normaliseround(state, sd, &vsd, fpscr, "fdiv");
return exceptions;
vsn_nan: vsn_nan:
exceptions = vfp_propagate_nan(&vsd, &vsn, &vsm, fpscr); exceptions |= vfp_propagate_nan(&vsd, &vsn, &vsm, fpscr);
pack: pack:
vfp_put_float(state, vfp_single_pack(&vsd), sd); vfp_put_float(state, vfp_single_pack(&vsd), sd);
return exceptions; return exceptions;
vsm_nan: vsm_nan:
exceptions = vfp_propagate_nan(&vsd, &vsm, &vsn, fpscr); exceptions |= vfp_propagate_nan(&vsd, &vsm, &vsn, fpscr);
goto pack; goto pack;
zero: zero:
@ -1180,7 +1197,7 @@ zero:
goto pack; goto pack;
divzero: divzero:
exceptions = FPSCR_DZC; exceptions |= FPSCR_DZC;
infinity: infinity:
vsd.exponent = 255; vsd.exponent = 255;
vsd.significand = 0; vsd.significand = 0;
@ -1188,7 +1205,8 @@ infinity:
invalid: invalid:
vfp_put_float(state, vfp_single_pack(&vfp_single_default_qnan), sd); vfp_put_float(state, vfp_single_pack(&vfp_single_default_qnan), sd);
return FPSCR_IOC; exceptions |= FPSCR_IOC;
return exceptions;
} }
static struct op fops[] = { static struct op fops[] = {