summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/core/arm/skyeye_common/vfp/vfp.cpp4
-rw-r--r--src/core/arm/skyeye_common/vfp/vfp_helper.h654
-rw-r--r--src/core/arm/skyeye_common/vfp/vfpdouble.cpp187
-rw-r--r--src/core/arm/skyeye_common/vfp/vfpsingle.cpp54
4 files changed, 322 insertions, 577 deletions
diff --git a/src/core/arm/skyeye_common/vfp/vfp.cpp b/src/core/arm/skyeye_common/vfp/vfp.cpp
index 888709124..1cf146c53 100644
--- a/src/core/arm/skyeye_common/vfp/vfp.cpp
+++ b/src/core/arm/skyeye_common/vfp/vfp.cpp
@@ -773,8 +773,8 @@ void vfp_raise_exceptions(ARMul_State* state, u32 exceptions, u32 inst, u32 fpsc
* Comparison instructions always return at least one of
* these flags set.
*/
- if (exceptions & (FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V))
- fpscr &= ~(FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V);
+ if (exceptions & (FPSCR_NFLAG|FPSCR_ZFLAG|FPSCR_CFLAG|FPSCR_VFLAG))
+ fpscr &= ~(FPSCR_NFLAG|FPSCR_ZFLAG|FPSCR_CFLAG|FPSCR_VFLAG);
fpscr |= exceptions;
diff --git a/src/core/arm/skyeye_common/vfp/vfp_helper.h b/src/core/arm/skyeye_common/vfp/vfp_helper.h
index 581f0358f..b68090b80 100644
--- a/src/core/arm/skyeye_common/vfp/vfp_helper.h
+++ b/src/core/arm/skyeye_common/vfp/vfp_helper.h
@@ -45,444 +45,400 @@
#define do_div(n, base) {n/=base;}
-/* From vfpinstr.h */
-
-#define INST_CPRTDO(inst) (((inst) & 0x0f000000) == 0x0e000000)
-#define INST_CPRT(inst) ((inst) & (1 << 4))
-#define INST_CPRT_L(inst) ((inst) & (1 << 20))
-#define INST_CPRT_Rd(inst) (((inst) & (15 << 12)) >> 12)
-#define INST_CPRT_OP(inst) (((inst) >> 21) & 7)
-#define INST_CPNUM(inst) ((inst) & 0xf00)
-#define CPNUM(cp) ((cp) << 8)
-
-#define FOP_MASK (0x00b00040)
-#define FOP_FMAC (0x00000000)
-#define FOP_FNMAC (0x00000040)
-#define FOP_FMSC (0x00100000)
-#define FOP_FNMSC (0x00100040)
-#define FOP_FMUL (0x00200000)
-#define FOP_FNMUL (0x00200040)
-#define FOP_FADD (0x00300000)
-#define FOP_FSUB (0x00300040)
-#define FOP_FDIV (0x00800000)
-#define FOP_EXT (0x00b00040)
-
-#define FOP_TO_IDX(inst) ((inst & 0x00b00000) >> 20 | (inst & (1 << 6)) >> 4)
-
-#define FEXT_MASK (0x000f0080)
-#define FEXT_FCPY (0x00000000)
-#define FEXT_FABS (0x00000080)
-#define FEXT_FNEG (0x00010000)
-#define FEXT_FSQRT (0x00010080)
-#define FEXT_FCMP (0x00040000)
-#define FEXT_FCMPE (0x00040080)
-#define FEXT_FCMPZ (0x00050000)
-#define FEXT_FCMPEZ (0x00050080)
-#define FEXT_FCVT (0x00070080)
-#define FEXT_FUITO (0x00080000)
-#define FEXT_FSITO (0x00080080)
-#define FEXT_FTOUI (0x000c0000)
-#define FEXT_FTOUIZ (0x000c0080)
-#define FEXT_FTOSI (0x000d0000)
-#define FEXT_FTOSIZ (0x000d0080)
-
-#define FEXT_TO_IDX(inst) ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
-
-#define vfp_get_sd(inst) ((inst & 0x0000f000) >> 11 | (inst & (1 << 22)) >> 22)
-#define vfp_get_dd(inst) ((inst & 0x0000f000) >> 12 | (inst & (1 << 22)) >> 18)
-#define vfp_get_sm(inst) ((inst & 0x0000000f) << 1 | (inst & (1 << 5)) >> 5)
-#define vfp_get_dm(inst) ((inst & 0x0000000f) | (inst & (1 << 5)) >> 1)
-#define vfp_get_sn(inst) ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
-#define vfp_get_dn(inst) ((inst & 0x000f0000) >> 16 | (inst & (1 << 7)) >> 3)
-
-#define vfp_single(inst) (((inst) & 0x0000f00) == 0xa00)
-
-#define FPSCR_N (1 << 31)
-#define FPSCR_Z (1 << 30)
-#define FPSCR_C (1 << 29)
-#define FPSCR_V (1 << 28)
+enum : u32 {
+ FOP_MASK = 0x00b00040,
+ FOP_FMAC = 0x00000000,
+ FOP_FNMAC = 0x00000040,
+ FOP_FMSC = 0x00100000,
+ FOP_FNMSC = 0x00100040,
+ FOP_FMUL = 0x00200000,
+ FOP_FNMUL = 0x00200040,
+ FOP_FADD = 0x00300000,
+ FOP_FSUB = 0x00300040,
+ FOP_FDIV = 0x00800000,
+ FOP_EXT = 0x00b00040
+};
+
+#define FOP_TO_IDX(inst) ((inst & 0x00b00000) >> 20 | (inst & (1 << 6)) >> 4)
+
+enum : u32 {
+ FEXT_MASK = 0x000f0080,
+ FEXT_FCPY = 0x00000000,
+ FEXT_FABS = 0x00000080,
+ FEXT_FNEG = 0x00010000,
+ FEXT_FSQRT = 0x00010080,
+ FEXT_FCMP = 0x00040000,
+ FEXT_FCMPE = 0x00040080,
+ FEXT_FCMPZ = 0x00050000,
+ FEXT_FCMPEZ = 0x00050080,
+ FEXT_FCVT = 0x00070080,
+ FEXT_FUITO = 0x00080000,
+ FEXT_FSITO = 0x00080080,
+ FEXT_FTOUI = 0x000c0000,
+ FEXT_FTOUIZ = 0x000c0080,
+ FEXT_FTOSI = 0x000d0000,
+ FEXT_FTOSIZ = 0x000d0080
+};
+
+#define FEXT_TO_IDX(inst) ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
+
+#define vfp_get_sd(inst) ((inst & 0x0000f000) >> 11 | (inst & (1 << 22)) >> 22)
+#define vfp_get_dd(inst) ((inst & 0x0000f000) >> 12 | (inst & (1 << 22)) >> 18)
+#define vfp_get_sm(inst) ((inst & 0x0000000f) << 1 | (inst & (1 << 5)) >> 5)
+#define vfp_get_dm(inst) ((inst & 0x0000000f) | (inst & (1 << 5)) >> 1)
+#define vfp_get_sn(inst) ((inst & 0x000f0000) >> 15 | (inst & (1 << 7)) >> 7)
+#define vfp_get_dn(inst) ((inst & 0x000f0000) >> 16 | (inst & (1 << 7)) >> 3)
+
+#define vfp_single(inst) (((inst) & 0x0000f00) == 0xa00)
static inline u32 vfp_shiftright32jamming(u32 val, unsigned int shift)
{
- if (shift) {
- if (shift < 32)
- val = val >> shift | ((val << (32 - shift)) != 0);
- else
- val = val != 0;
- }
- return val;
+ if (shift) {
+ if (shift < 32)
+ val = val >> shift | ((val << (32 - shift)) != 0);
+ else
+ val = val != 0;
+ }
+ return val;
}
static inline u64 vfp_shiftright64jamming(u64 val, unsigned int shift)
{
- if (shift) {
- if (shift < 64)
- val = val >> shift | ((val << (64 - shift)) != 0);
- else
- val = val != 0;
- }
- return val;
+ if (shift) {
+ if (shift < 64)
+ val = val >> shift | ((val << (64 - shift)) != 0);
+ else
+ val = val != 0;
+ }
+ return val;
}
static inline u32 vfp_hi64to32jamming(u64 val)
{
- u32 v;
- u32 highval = val >> 32;
- u32 lowval = val & 0xffffffff;
+ u32 v;
+ u32 highval = val >> 32;
+ u32 lowval = val & 0xffffffff;
- if (lowval >= 1)
- v = highval | 1;
- else
- v = highval;
+ if (lowval >= 1)
+ v = highval | 1;
+ else
+ v = highval;
- return v;
+ return v;
}
-static inline void add128(u64 *resh, u64 *resl, u64 nh, u64 nl, u64 mh, u64 ml)
+static inline void add128(u64* resh, u64* resl, u64 nh, u64 nl, u64 mh, u64 ml)
{
- *resl = nl + ml;
- *resh = nh + mh;
- if (*resl < nl)
- *resh += 1;
+ *resl = nl + ml;
+ *resh = nh + mh;
+ if (*resl < nl)
+ *resh += 1;
}
-static inline void sub128(u64 *resh, u64 *resl, u64 nh, u64 nl, u64 mh, u64 ml)
+static inline void sub128(u64* resh, u64* resl, u64 nh, u64 nl, u64 mh, u64 ml)
{
- *resl = nl - ml;
- *resh = nh - mh;
- if (*resl > nl)
- *resh -= 1;
+ *resl = nl - ml;
+ *resh = nh - mh;
+ if (*resl > nl)
+ *resh -= 1;
}
-static inline void mul64to128(u64 *resh, u64 *resl, u64 n, u64 m)
+static inline void mul64to128(u64* resh, u64* resl, u64 n, u64 m)
{
- u32 nh, nl, mh, ml;
- u64 rh, rma, rmb, rl;
+ u32 nh, nl, mh, ml;
+ u64 rh, rma, rmb, rl;
- nl = n;
- ml = m;
- rl = (u64)nl * ml;
+ nl = n;
+ ml = m;
+ rl = (u64)nl * ml;
- nh = n >> 32;
- rma = (u64)nh * ml;
+ nh = n >> 32;
+ rma = (u64)nh * ml;
- mh = m >> 32;
- rmb = (u64)nl * mh;
- rma += rmb;
+ mh = m >> 32;
+ rmb = (u64)nl * mh;
+ rma += rmb;
- rh = (u64)nh * mh;
- rh += ((u64)(rma < rmb) << 32) + (rma >> 32);
+ rh = (u64)nh * mh;
+ rh += ((u64)(rma < rmb) << 32) + (rma >> 32);
- rma <<= 32;
- rl += rma;
- rh += (rl < rma);
+ rma <<= 32;
+ rl += rma;
+ rh += (rl < rma);
- *resl = rl;
- *resh = rh;
+ *resl = rl;
+ *resh = rh;
}
-static inline void shift64left(u64 *resh, u64 *resl, u64 n)
+static inline void shift64left(u64* resh, u64* resl, u64 n)
{
- *resh = n >> 63;
- *resl = n << 1;
+ *resh = n >> 63;
+ *resl = n << 1;
}
static inline u64 vfp_hi64multiply64(u64 n, u64 m)
{
- u64 rh, rl;
- mul64to128(&rh, &rl, n, m);
- return rh | (rl != 0);
+ u64 rh, rl;
+ mul64to128(&rh, &rl, n, m);
+ return rh | (rl != 0);
}
static inline u64 vfp_estimate_div128to64(u64 nh, u64 nl, u64 m)
{
- u64 mh, ml, remh, reml, termh, terml, z;
-
- if (nh >= m)
- return ~0ULL;
- mh = m >> 32;
- if (mh << 32 <= nh) {
- z = 0xffffffff00000000ULL;
- } else {
- z = nh;
- do_div(z, mh);
- z <<= 32;
- }
- mul64to128(&termh, &terml, m, z);
- sub128(&remh, &reml, nh, nl, termh, terml);
- ml = m << 32;
- while ((s64)remh < 0) {
- z -= 0x100000000ULL;
- add128(&remh, &reml, remh, reml, mh, ml);
- }
- remh = (remh << 32) | (reml >> 32);
- if (mh << 32 <= remh) {
- z |= 0xffffffff;
- } else {
- do_div(remh, mh);
- z |= remh;
- }
- return z;
+ u64 mh, ml, remh, reml, termh, terml, z;
+
+ if (nh >= m)
+ return ~0ULL;
+ mh = m >> 32;
+ if (mh << 32 <= nh) {
+ z = 0xffffffff00000000ULL;
+ } else {
+ z = nh;
+ do_div(z, mh);
+ z <<= 32;
+ }
+ mul64to128(&termh, &terml, m, z);
+ sub128(&remh, &reml, nh, nl, termh, terml);
+ ml = m << 32;
+ while ((s64)remh < 0) {
+ z -= 0x100000000ULL;
+ add128(&remh, &reml, remh, reml, mh, ml);
+ }
+ remh = (remh << 32) | (reml >> 32);
+ if (mh << 32 <= remh) {
+ z |= 0xffffffff;
+ } else {
+ do_div(remh, mh);
+ z |= remh;
+ }
+ return z;
}
-/*
- * Operations on unpacked elements
- */
-#define vfp_sign_negate(sign) (sign ^ 0x8000)
+// Operations on unpacked elements
+#define vfp_sign_negate(sign) (sign ^ 0x8000)
-/*
- * Single-precision
- */
+// Single-precision
struct vfp_single {
- s16 exponent;
- u16 sign;
- u32 significand;
+ s16 exponent;
+ u16 sign;
+ u32 significand;
};
-/*
- * VFP_SINGLE_MANTISSA_BITS - number of bits in the mantissa
- * VFP_SINGLE_EXPONENT_BITS - number of bits in the exponent
- * VFP_SINGLE_LOW_BITS - number of low bits in the unpacked significand
- * which are not propagated to the float upon packing.
- */
-#define VFP_SINGLE_MANTISSA_BITS (23)
-#define VFP_SINGLE_EXPONENT_BITS (8)
-#define VFP_SINGLE_LOW_BITS (32 - VFP_SINGLE_MANTISSA_BITS - 2)
-#define VFP_SINGLE_LOW_BITS_MASK ((1 << VFP_SINGLE_LOW_BITS) - 1)
+// VFP_SINGLE_MANTISSA_BITS - number of bits in the mantissa
+// VFP_SINGLE_EXPONENT_BITS - number of bits in the exponent
+// VFP_SINGLE_LOW_BITS - number of low bits in the unpacked significand
+// which are not propagated to the float upon packing.
+#define VFP_SINGLE_MANTISSA_BITS (23)
+#define VFP_SINGLE_EXPONENT_BITS (8)
+#define VFP_SINGLE_LOW_BITS (32 - VFP_SINGLE_MANTISSA_BITS - 2)
+#define VFP_SINGLE_LOW_BITS_MASK ((1 << VFP_SINGLE_LOW_BITS) - 1)
-/*
- * The bit in an unpacked float which indicates that it is a quiet NaN
- */
+// The bit in an unpacked float which indicates that it is a quiet NaN
#define VFP_SINGLE_SIGNIFICAND_QNAN (1 << (VFP_SINGLE_MANTISSA_BITS - 1 + VFP_SINGLE_LOW_BITS))
-/*
- * Operations on packed single-precision numbers
- */
-#define vfp_single_packed_sign(v) ((v) & 0x80000000)
-#define vfp_single_packed_negate(v) ((v) ^ 0x80000000)
-#define vfp_single_packed_abs(v) ((v) & ~0x80000000)
-#define vfp_single_packed_exponent(v) (((v) >> VFP_SINGLE_MANTISSA_BITS) & ((1 << VFP_SINGLE_EXPONENT_BITS) - 1))
-#define vfp_single_packed_mantissa(v) ((v) & ((1 << VFP_SINGLE_MANTISSA_BITS) - 1))
-
-/*
- * Unpack a single-precision float. Note that this returns the magnitude
- * of the single-precision float mantissa with the 1. if necessary,
- * aligned to bit 30.
- */
-static inline void vfp_single_unpack(struct vfp_single *s, s32 val)
+// Operations on packed single-precision numbers
+#define vfp_single_packed_sign(v) ((v) & 0x80000000)
+#define vfp_single_packed_negate(v) ((v) ^ 0x80000000)
+#define vfp_single_packed_abs(v) ((v) & ~0x80000000)
+#define vfp_single_packed_exponent(v) (((v) >> VFP_SINGLE_MANTISSA_BITS) & ((1 << VFP_SINGLE_EXPONENT_BITS) - 1))
+#define vfp_single_packed_mantissa(v) ((v) & ((1 << VFP_SINGLE_MANTISSA_BITS) - 1))
+
+// Unpack a single-precision float. Note that this returns the magnitude
+// of the single-precision float mantissa with the 1. if necessary,
+// aligned to bit 30.
+static inline void vfp_single_unpack(vfp_single* s, s32 val)
{
- u32 significand;
+ u32 significand;
- s->sign = vfp_single_packed_sign(val) >> 16,
- s->exponent = vfp_single_packed_exponent(val);
+ s->sign = vfp_single_packed_sign(val) >> 16,
+ s->exponent = vfp_single_packed_exponent(val);
- significand = (u32) val;
- significand = (significand << (32 - VFP_SINGLE_MANTISSA_BITS)) >> 2;
- if (s->exponent && s->exponent != 255)
- significand |= 0x40000000;
- s->significand = significand;
+ significand = (u32) val;
+ significand = (significand << (32 - VFP_SINGLE_MANTISSA_BITS)) >> 2;
+ if (s->exponent && s->exponent != 255)
+ significand |= 0x40000000;
+ s->significand = significand;
}
-/*
- * Re-pack a single-precision float. This assumes that the float is
- * already normalised such that the MSB is bit 30, _not_ bit 31.
- */
-static inline s32 vfp_single_pack(struct vfp_single *s)
+// Re-pack a single-precision float. This assumes that the float is
+// already normalised such that the MSB is bit 30, _not_ bit 31.
+static inline s32 vfp_single_pack(vfp_single* s)
{
- u32 val;
- val = (s->sign << 16) +
- (s->exponent << VFP_SINGLE_MANTISSA_BITS) +
- (s->significand >> VFP_SINGLE_LOW_BITS);
- return (s32)val;
+ u32 val = (s->sign << 16) +
+ (s->exponent << VFP_SINGLE_MANTISSA_BITS) +
+ (s->significand >> VFP_SINGLE_LOW_BITS);
+ return (s32)val;
}
-#define VFP_NUMBER (1<<0)
-#define VFP_ZERO (1<<1)
-#define VFP_DENORMAL (1<<2)
-#define VFP_INFINITY (1<<3)
-#define VFP_NAN (1<<4)
-#define VFP_NAN_SIGNAL (1<<5)
+enum : u32 {
+ VFP_NUMBER = (1 << 0),
+ VFP_ZERO = (1 << 1),
+ VFP_DENORMAL = (1 << 2),
+ VFP_INFINITY = (1 << 3),
+ VFP_NAN = (1 << 4),
+ VFP_NAN_SIGNAL = (1 << 5),
-#define VFP_QNAN (VFP_NAN)
-#define VFP_SNAN (VFP_NAN|VFP_NAN_SIGNAL)
+ VFP_QNAN = (VFP_NAN),
+ VFP_SNAN = (VFP_NAN|VFP_NAN_SIGNAL)
+};
-static inline int vfp_single_type(struct vfp_single *s)
+static inline int vfp_single_type(vfp_single* s)
{
- int type = VFP_NUMBER;
- if (s->exponent == 255) {
- if (s->significand == 0)
- type = VFP_INFINITY;
- else if (s->significand & VFP_SINGLE_SIGNIFICAND_QNAN)
- type = VFP_QNAN;
- else
- type = VFP_SNAN;
- } else if (s->exponent == 0) {
- if (s->significand == 0)
- type |= VFP_ZERO;
- else
- type |= VFP_DENORMAL;
- }
- return type;
+ int type = VFP_NUMBER;
+ if (s->exponent == 255) {
+ if (s->significand == 0)
+ type = VFP_INFINITY;
+ else if (s->significand & VFP_SINGLE_SIGNIFICAND_QNAN)
+ type = VFP_QNAN;
+ else
+ type = VFP_SNAN;
+ } else if (s->exponent == 0) {
+ if (s->significand == 0)
+ type |= VFP_ZERO;
+ else
+ type |= VFP_DENORMAL;
+ }
+ return type;
}
-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, vfp_single* vs, u32 fpscr, u32 exceptions, const char* func);
-/*
- * Double-precision
- */
+// Double-precision
struct vfp_double {
- s16 exponent;
- u16 sign;
- u64 significand;
+ s16 exponent;
+ u16 sign;
+ u64 significand;
};
-/*
- * VFP_REG_ZERO is a special register number for vfp_get_double
- * which returns (double)0.0. This is useful for the compare with
- * zero instructions.
- */
+// VFP_REG_ZERO is a special register number for vfp_get_double
+// which returns (double)0.0. This is useful for the compare with
+// zero instructions.
#ifdef CONFIG_VFPv3
-#define VFP_REG_ZERO 32
+#define VFP_REG_ZERO 32
#else
-#define VFP_REG_ZERO 16
+#define VFP_REG_ZERO 16
#endif
-#define VFP_DOUBLE_MANTISSA_BITS (52)
-#define VFP_DOUBLE_EXPONENT_BITS (11)
-#define VFP_DOUBLE_LOW_BITS (64 - VFP_DOUBLE_MANTISSA_BITS - 2)
-#define VFP_DOUBLE_LOW_BITS_MASK ((1 << VFP_DOUBLE_LOW_BITS) - 1)
-
-/*
- * The bit in an unpacked double which indicates that it is a quiet NaN
- */
-#define VFP_DOUBLE_SIGNIFICAND_QNAN (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1 + VFP_DOUBLE_LOW_BITS))
-
-/*
- * Operations on packed single-precision numbers
- */
-#define vfp_double_packed_sign(v) ((v) & (1ULL << 63))
-#define vfp_double_packed_negate(v) ((v) ^ (1ULL << 63))
-#define vfp_double_packed_abs(v) ((v) & ~(1ULL << 63))
-#define vfp_double_packed_exponent(v) (((v) >> VFP_DOUBLE_MANTISSA_BITS) & ((1 << VFP_DOUBLE_EXPONENT_BITS) - 1))
-#define vfp_double_packed_mantissa(v) ((v) & ((1ULL << VFP_DOUBLE_MANTISSA_BITS) - 1))
-
-/*
- * Unpack a double-precision float. Note that this returns the magnitude
- * of the double-precision float mantissa with the 1. if necessary,
- * aligned to bit 62.
- */
-static inline void vfp_double_unpack(struct vfp_double *s, s64 val)
+#define VFP_DOUBLE_MANTISSA_BITS (52)
+#define VFP_DOUBLE_EXPONENT_BITS (11)
+#define VFP_DOUBLE_LOW_BITS (64 - VFP_DOUBLE_MANTISSA_BITS - 2)
+#define VFP_DOUBLE_LOW_BITS_MASK ((1 << VFP_DOUBLE_LOW_BITS) - 1)
+
+// The bit in an unpacked double which indicates that it is a quiet NaN
+#define VFP_DOUBLE_SIGNIFICAND_QNAN (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1 + VFP_DOUBLE_LOW_BITS))
+
+// Operations on packed single-precision numbers
+#define vfp_double_packed_sign(v) ((v) & (1ULL << 63))
+#define vfp_double_packed_negate(v) ((v) ^ (1ULL << 63))
+#define vfp_double_packed_abs(v) ((v) & ~(1ULL << 63))
+#define vfp_double_packed_exponent(v) (((v) >> VFP_DOUBLE_MANTISSA_BITS) & ((1 << VFP_DOUBLE_EXPONENT_BITS) - 1))
+#define vfp_double_packed_mantissa(v) ((v) & ((1ULL << VFP_DOUBLE_MANTISSA_BITS) - 1))
+
+// Unpack a double-precision float. Note that this returns the magnitude
+// of the double-precision float mantissa with the 1. if necessary,
+// aligned to bit 62.
+static inline void vfp_double_unpack(vfp_double* s, s64 val)
{
- u64 significand;
+ u64 significand;
- s->sign = vfp_double_packed_sign(val) >> 48;
- s->exponent = vfp_double_packed_exponent(val);
+ s->sign = vfp_double_packed_sign(val) >> 48;
+ s->exponent = vfp_double_packed_exponent(val);
- significand = (u64) val;
- significand = (significand << (64 - VFP_DOUBLE_MANTISSA_BITS)) >> 2;
- if (s->exponent && s->exponent != 2047)
- significand |= (1ULL << 62);
- s->significand = significand;
+ significand = (u64) val;
+ significand = (significand << (64 - VFP_DOUBLE_MANTISSA_BITS)) >> 2;
+ if (s->exponent && s->exponent != 2047)
+ significand |= (1ULL << 62);
+ s->significand = significand;
}
-/*
- * Re-pack a double-precision float. This assumes that the float is
- * already normalised such that the MSB is bit 30, _not_ bit 31.
- */
-static inline s64 vfp_double_pack(struct vfp_double *s)
+// Re-pack a double-precision float. This assumes that the float is
+// already normalised such that the MSB is bit 30, _not_ bit 31.
+static inline s64 vfp_double_pack(vfp_double* s)
{
- u64 val;
- val = ((u64)s->sign << 48) +
- ((u64)s->exponent << VFP_DOUBLE_MANTISSA_BITS) +
- (s->significand >> VFP_DOUBLE_LOW_BITS);
- return (s64)val;
+ u64 val = ((u64)s->sign << 48) +
+ ((u64)s->exponent << VFP_DOUBLE_MANTISSA_BITS) +
+ (s->significand >> VFP_DOUBLE_LOW_BITS);
+ return (s64)val;
}
-static inline int vfp_double_type(struct vfp_double *s)
+static inline int vfp_double_type(vfp_double* s)
{
- int type = VFP_NUMBER;
- if (s->exponent == 2047) {
- if (s->significand == 0)
- type = VFP_INFINITY;
- else if (s->significand & VFP_DOUBLE_SIGNIFICAND_QNAN)
- type = VFP_QNAN;
- else
- type = VFP_SNAN;
- } else if (s->exponent == 0) {
- if (s->significand == 0)
- type |= VFP_ZERO;
- else
- type |= VFP_DENORMAL;
- }
- return type;
+ int type = VFP_NUMBER;
+ if (s->exponent == 2047) {
+ if (s->significand == 0)
+ type = VFP_INFINITY;
+ else if (s->significand & VFP_DOUBLE_SIGNIFICAND_QNAN)
+ type = VFP_QNAN;
+ else
+ type = VFP_SNAN;
+ } else if (s->exponent == 0) {
+ if (s->significand == 0)
+ type |= VFP_ZERO;
+ else
+ type |= VFP_DENORMAL;
+ }
+ return type;
}
-u32 vfp_double_normaliseround(ARMul_State* state, int dd, struct 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.
- */
-#define VFP_NAN_FLAG 0x100
-
-/*
- * A bit pattern used to indicate the initial (unset) value of the
- * exception mask, in case nothing handles an instruction. This
- * doesn't include the NAN flag, which get masked out before
- * we check for an error.
- */
-#define VFP_EXCEPTION_ERROR ((u32)-1 & ~VFP_NAN_FLAG)
-
-/*
- * A flag to tell vfp instruction type.
- * OP_SCALAR - this operation always operates in scalar mode
- * OP_SD - the instruction exceptionally writes to a single precision result.
- * OP_DD - the instruction exceptionally writes to a double precision result.
- * OP_SM - the instruction exceptionally reads from a single precision operand.
- */
-#define OP_SCALAR (1 << 0)
-#define OP_SD (1 << 1)
-#define OP_DD (1 << 1)
-#define OP_SM (1 << 2)
+// A special flag to tell the normalisation code not to normalise.
+#define VFP_NAN_FLAG 0x100
+
+// A bit pattern used to indicate the initial (unset) value of the
+// exception mask, in case nothing handles an instruction. This
+// doesn't include the NAN flag, which get masked out before
+// we check for an error.
+#define VFP_EXCEPTION_ERROR ((u32)-1 & ~VFP_NAN_FLAG)
+
+// A flag to tell vfp instruction type.
+// OP_SCALAR - This operation always operates in scalar mode
+// OP_SD - The instruction exceptionally writes to a single precision result.
+// OP_DD - The instruction exceptionally writes to a double precision result.
+// OP_SM - The instruction exceptionally reads from a single precision operand.
+enum : u32 {
+ OP_SCALAR = (1 << 0),
+ OP_SD = (1 << 1),
+ OP_DD = (1 << 1),
+ OP_SM = (1 << 2)
+};
struct op {
- u32 (* const fn)(ARMul_State* state, int dd, int dn, int dm, u32 fpscr);
- u32 flags;
+ u32 (* const fn)(ARMul_State* state, int dd, int dn, int dm, u32 fpscr);
+ u32 flags;
};
static inline u32 fls(ARMword x)
{
- int r = 32;
-
- if (!x)
- return 0;
- if (!(x & 0xffff0000u)) {
- x <<= 16;
- r -= 16;
- }
- if (!(x & 0xff000000u)) {
- x <<= 8;
- r -= 8;
- }
- if (!(x & 0xf0000000u)) {
- x <<= 4;
- r -= 4;
- }
- if (!(x & 0xc0000000u)) {
- x <<= 2;
- r -= 2;
- }
- if (!(x & 0x80000000u)) {
- x <<= 1;
- r -= 1;
- }
- return r;
+ int r = 32;
+
+ if (!x)
+ return 0;
+ if (!(x & 0xffff0000u)) {
+ x <<= 16;
+ r -= 16;
+ }
+ if (!(x & 0xff000000u)) {
+ x <<= 8;
+ r -= 8;
+ }
+ if (!(x & 0xf0000000u)) {
+ x <<= 4;
+ r -= 4;
+ }
+ if (!(x & 0xc0000000u)) {
+ x <<= 2;
+ r -= 2;
+ }
+ if (!(x & 0x80000000u)) {
+ x <<= 1;
+ r -= 1;
+ }
+ return r;
}
-u32 vfp_double_normaliseroundintern(ARMul_State* state, struct vfp_double *vd, u32 fpscr, u32 exceptions, const char *func);
-u32 vfp_double_multiply(struct vfp_double *vdd, struct vfp_double *vdn, struct vfp_double *vdm, u32 fpscr);
-u32 vfp_double_add(struct vfp_double *vdd, struct vfp_double *vdn, struct vfp_double *vdm, u32 fpscr);
-u32 vfp_double_fcvtsinterncutting(ARMul_State* state, int sd, struct vfp_double* dm, 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_normaliseround(ARMul_State* state, int dd, vfp_double* vd, u32 fpscr, u32 exceptions, const char* func);
diff --git a/src/core/arm/skyeye_common/vfp/vfpdouble.cpp b/src/core/arm/skyeye_common/vfp/vfpdouble.cpp
index d35ca510a..2c15db12b 100644
--- a/src/core/arm/skyeye_common/vfp/vfpdouble.cpp
+++ b/src/core/arm/skyeye_common/vfp/vfpdouble.cpp
@@ -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;
@@ -511,7 +383,7 @@ static u32 vfp_compare(ARMul_State* state, int dd, int signal_on_qnan, int dm, u
LOG_TRACE(Core_ARM11, "In %s, state=0x%x, fpscr=0x%x\n", __FUNCTION__, state, fpscr);
m = vfp_get_double(state, dm);
if (vfp_double_packed_exponent(m) == 2047 && vfp_double_packed_mantissa(m)) {
- ret |= FPSCR_C | FPSCR_V;
+ ret |= FPSCR_CFLAG | FPSCR_VFLAG;
if (signal_on_qnan || !(vfp_double_packed_mantissa(m) & (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1))))
/*
* Signalling NaN, or signalling on quiet NaN
@@ -521,7 +393,7 @@ static u32 vfp_compare(ARMul_State* state, int dd, int signal_on_qnan, int dm, u
d = vfp_get_double(state, dd);
if (vfp_double_packed_exponent(d) == 2047 && vfp_double_packed_mantissa(d)) {
- ret |= FPSCR_C | FPSCR_V;
+ ret |= FPSCR_CFLAG | FPSCR_VFLAG;
if (signal_on_qnan || !(vfp_double_packed_mantissa(d) & (1ULL << (VFP_DOUBLE_MANTISSA_BITS - 1))))
/*
* Signalling NaN, or signalling on quiet NaN
@@ -535,7 +407,7 @@ static u32 vfp_compare(ARMul_State* state, int dd, int signal_on_qnan, int dm, u
/*
* equal
*/
- ret |= FPSCR_Z | FPSCR_C;
+ ret |= FPSCR_ZFLAG | FPSCR_CFLAG;
//printf("In %s,1 ret=0x%x\n", __FUNCTION__, ret);
} else if (vfp_double_packed_sign(d ^ m)) {
/*
@@ -545,22 +417,22 @@ static u32 vfp_compare(ARMul_State* state, int dd, int signal_on_qnan, int dm, u
/*
* d is negative, so d < m
*/
- ret |= FPSCR_N;
+ ret |= FPSCR_NFLAG;
else
/*
* d is positive, so d > m
*/
- ret |= FPSCR_C;
+ ret |= FPSCR_CFLAG;
} else if ((vfp_double_packed_sign(d) != 0) ^ (d < m)) {
/*
* d < m
*/
- ret |= FPSCR_N;
+ ret |= FPSCR_NFLAG;
} else if ((vfp_double_packed_sign(d) != 0) ^ (d > m)) {
/*
* d > m
*/
- ret |= FPSCR_C;
+ ret |= FPSCR_CFLAG;
}
}
LOG_TRACE(Core_ARM11, "In %s, state=0x%x, ret=0x%x\n", __FUNCTION__, state, ret);
@@ -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;
@@ -723,7 +552,7 @@ static u32 vfp_double_ftoui(ARMul_State* state, int sd, int unused, int dm, u32
exceptions |= FPSCR_IDC;
if (tm & VFP_NAN)
- vdm.sign = 0;
+ vdm.sign = 1;
if (vdm.exponent >= 1023 + 32) {
d = vdm.sign ? 0 : 0xffffffff;
diff --git a/src/core/arm/skyeye_common/vfp/vfpsingle.cpp b/src/core/arm/skyeye_common/vfp/vfpsingle.cpp
index b7872bdc4..678b63f51 100644
--- a/src/core/arm/skyeye_common/vfp/vfpsingle.cpp
+++ b/src/core/arm/skyeye_common/vfp/vfpsingle.cpp
@@ -419,7 +419,7 @@ static u32 vfp_compare(ARMul_State* state, int sd, int signal_on_qnan, s32 m, u3
d = vfp_get_float(state, sd);
if (vfp_single_packed_exponent(m) == 255 && vfp_single_packed_mantissa(m)) {
- ret |= FPSCR_C | FPSCR_V;
+ ret |= FPSCR_CFLAG | FPSCR_VFLAG;
if (signal_on_qnan || !(vfp_single_packed_mantissa(m) & (1 << (VFP_SINGLE_MANTISSA_BITS - 1))))
/*
* Signalling NaN, or signalling on quiet NaN
@@ -428,7 +428,7 @@ static u32 vfp_compare(ARMul_State* state, int sd, int signal_on_qnan, s32 m, u3
}
if (vfp_single_packed_exponent(d) == 255 && vfp_single_packed_mantissa(d)) {
- ret |= FPSCR_C | FPSCR_V;
+ ret |= FPSCR_CFLAG | FPSCR_VFLAG;
if (signal_on_qnan || !(vfp_single_packed_mantissa(d) & (1 << (VFP_SINGLE_MANTISSA_BITS - 1))))
/*
* Signalling NaN, or signalling on quiet NaN
@@ -441,7 +441,7 @@ static u32 vfp_compare(ARMul_State* state, int sd, int signal_on_qnan, s32 m, u3
/*
* equal
*/
- ret |= FPSCR_Z | FPSCR_C;
+ ret |= FPSCR_ZFLAG | FPSCR_CFLAG;
} else if (vfp_single_packed_sign(d ^ m)) {
/*
* different signs
@@ -450,22 +450,22 @@ static u32 vfp_compare(ARMul_State* state, int sd, int signal_on_qnan, s32 m, u3
/*
* d is negative, so d < m
*/
- ret |= FPSCR_N;
+ ret |= FPSCR_NFLAG;
else
/*
* d is positive, so d > m
*/
- ret |= FPSCR_C;
+ ret |= FPSCR_CFLAG;
} else if ((vfp_single_packed_sign(d) != 0) ^ (d < m)) {
/*
* d < m
*/
- ret |= FPSCR_N;
+ ret |= FPSCR_NFLAG;
} else if ((vfp_single_packed_sign(d) != 0) ^ (d > m)) {
/*
* d > m
*/
- ret |= FPSCR_C;
+ ret |= FPSCR_CFLAG;
}
}
return ret;
@@ -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;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 23:29:08 +0100