static inline
void storeDouble(const unsigned int Fn,unsigned int *pMem)
{
FPA11 *fpa11 = GET_FPA11();
union
{
float64 f;
unsigned int i[2];
} val;
switch (fpa11->fType[Fn])
{
case typeSingle:
val.f = float32_to_float64(fpa11->fpreg[Fn].fSingle);
break;
case typeExtended:
val.f = floatx80_to_float64(fpa11->fpreg[Fn].fExtended);
break;
default: val.f = fpa11->fpreg[Fn].fDouble;
}
put_user(val.i[1], &pMem[0]); /* msw */
put_user(val.i[0], &pMem[1]); /* lsw */
}
static inline void storeDouble(struct roundingData *roundData, const unsigned int Fn, unsigned int __user *pMem)
{
FPA11 *fpa11 = GET_FPA11();
union {
float64 f;
unsigned int i[2];
} val;
switch (fpa11->fType[Fn]) {
case typeSingle:
val.f = float32_to_float64(fpa11->fpreg[Fn].fSingle);
break;
#ifdef CONFIG_FPE_NWFPE_XP
case typeExtended:
val.f = floatx80_to_float64(roundData, fpa11->fpreg[Fn].fExtended);
break;
#endif
default:
val.f = fpa11->fpreg[Fn].fDouble;
}
#ifdef __ARMEB__
put_user(val.i[0], &pMem[0]); /* msw */
put_user(val.i[1], &pMem[1]); /* lsw */
#else
put_user(val.i[1], &pMem[0]); /* msw */
put_user(val.i[0], &pMem[1]); /* lsw */
#endif
}
extern __inline__
void storeDouble(const unsigned int Fn,unsigned int *pMem)
{
float64 val;
register unsigned int *p = (unsigned int*)&val;
switch (fpa11->fType[Fn])
{
case typeSingle:
val = float32_to_float64(fpa11->fpreg[Fn].fSingle);
break;
case typeExtended:
val = floatx80_to_float64(fpa11->fpreg[Fn].fExtended);
break;
default: val = fpa11->fpreg[Fn].fDouble;
}
#ifdef __ARMEB__
put_user(p[0], &pMem[0]); /* msw */
put_user(p[1], &pMem[1]); /* lsw */
#else
put_user(p[1], &pMem[0]); /* msw */
put_user(p[0], &pMem[1]); /* lsw */
#endif
}
static inline
void storeDouble(const unsigned int Fn, target_ulong addr)
{
FPA11 *fpa11 = GET_FPA11();
float64 val;
register unsigned int *p = (unsigned int*)&val;
switch (fpa11->fType[Fn])
{
case typeSingle:
val = float32_to_float64(fpa11->fpreg[Fn].fSingle, &fpa11->fp_status);
break;
case typeExtended:
val = floatx80_to_float64(fpa11->fpreg[Fn].fExtended, &fpa11->fp_status);
break;
default: val = fpa11->fpreg[Fn].fDouble;
}
/* FIXME - handle put_user() failures */
#ifdef HOST_WORDS_BIGENDIAN
put_user_u32(p[0], addr); /* msw */
put_user_u32(p[1], addr + 4); /* lsw */
#else
put_user_u32(p[1], addr); /* msw */
put_user_u32(p[0], addr + 4); /* lsw */
#endif
}
float64 __truncxfdf2(long_double A)
{
#if __SIZEOF_LONG_DOUBLE__ == 12
return floatx80_to_float64(A);
#else
return float128_to_float64(A);
#endif
}
INLINE double fx80_to_double(floatx80 fx)
{
UINT64 d;
double *foo;
foo = (double *)&d;
d = floatx80_to_float64(fx);
return *foo;
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::FST_DOUBLE_REAL(bxInstruction_c *i)
{
BX_CPU_THIS_PTR prepareFPU(i);
RMAddr(i) = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
FPU_update_last_instruction(i);
Bit16u x87_sw = FPU_PARTIAL_STATUS;
clear_C1();
float64 save_reg = float64_default_nan; /* The masked response */
int pop_stack = i->nnn() & 1;
if (IS_TAG_EMPTY(0))
{
FPU_exception(FPU_EX_Stack_Underflow);
if (! BX_CPU_THIS_PTR the_i387.is_IA_masked())
BX_NEXT_INSTR(i);
}
else
{
float_status_t status =
FPU_pre_exception_handling(BX_CPU_THIS_PTR the_i387.get_control_word());
save_reg = floatx80_to_float64(BX_READ_FPU_REG(0), status);
if (FPU_exception(status.float_exception_flags, 1))
BX_NEXT_INSTR(i);
}
// store to the memory might generate an exception, in this case origial FPU_SW must be kept
swap_values16u(x87_sw, FPU_PARTIAL_STATUS);
write_virtual_qword(i->seg(), RMAddr(i), save_reg);
FPU_PARTIAL_STATUS = x87_sw;
if (pop_stack)
BX_CPU_THIS_PTR the_i387.FPU_pop();
BX_NEXT_INSTR(i);
}
static inline
void storeDouble(const unsigned int Fn,unsigned int *pMem)
{
FPA11 *fpa11 = GET_FPA11();
float64 val;
register unsigned int *p = (unsigned int*)&val;
switch (fpa11->fType[Fn])
{
case typeSingle:
val = float32_to_float64(fpa11->fpreg[Fn].fSingle);
break;
case typeExtended:
val = floatx80_to_float64(fpa11->fpreg[Fn].fExtended);
break;
default: val = fpa11->fpreg[Fn].fDouble;
}
put_user(p[1], &pMem[0]); /* msw */
put_user(p[0], &pMem[1]); /* lsw */
}
void BX_CPP_AttrRegparmN(1) BX_CPU_C::FST_DOUBLE_REAL(bxInstruction_c *i)
{
#if BX_SUPPORT_FPU
BX_CPU_THIS_PTR prepareFPU(i);
clear_C1();
float64 save_reg = float64_default_nan; /* The masked response */
int pop_stack = i->nnn() & 1;
if (IS_TAG_EMPTY(0))
{
BX_CPU_THIS_PTR FPU_exception(FPU_EX_Stack_Underflow);
if (! (BX_CPU_THIS_PTR the_i387.is_IA_masked()))
return;
}
else
{
float_status_t status =
FPU_pre_exception_handling(BX_CPU_THIS_PTR the_i387.get_control_word());
save_reg = floatx80_to_float64(BX_READ_FPU_REG(0), status);
if (BX_CPU_THIS_PTR FPU_exception(status.float_exception_flags))
return;
}
write_virtual_qword(i->seg(), RMAddr(i), save_reg);
if (pop_stack)
BX_CPU_THIS_PTR the_i387.FPU_pop();
#else
BX_INFO(("FST(P)_DOUBLE_REAL: required FPU, configure --enable-fpu"));
#endif
}
unsigned int EmulateCPDO(const unsigned int opcode)
{
FPA11 *fpa11 = GET_FPA11();
FPREG *rFd;
unsigned int nType, nDest, nRc;
struct roundingData roundData;
/* Get the destination size. If not valid let Linux perform
an invalid instruction trap. */
nDest = getDestinationSize(opcode);
if (typeNone == nDest)
return 0;
roundData.mode = SetRoundingMode(opcode);
roundData.precision = SetRoundingPrecision(opcode);
roundData.exception = 0;
/* Compare the size of the operands in Fn and Fm.
Choose the largest size and perform operations in that size,
in order to make use of all the precision of the operands.
If Fm is a constant, we just grab a constant of a size
matching the size of the operand in Fn. */
if (MONADIC_INSTRUCTION(opcode))
nType = nDest;
else
nType = fpa11->fType[getFn(opcode)];
if (!CONSTANT_FM(opcode)) {
register unsigned int Fm = getFm(opcode);
if (nType < fpa11->fType[Fm]) {
nType = fpa11->fType[Fm];
}
}
rFd = &fpa11->fpreg[getFd(opcode)];
switch (nType) {
case typeSingle:
nRc = SingleCPDO(&roundData, opcode, rFd);
break;
case typeDouble:
nRc = DoubleCPDO(&roundData, opcode, rFd);
break;
#ifdef CONFIG_FPE_NWFPE_XP
case typeExtended:
nRc = ExtendedCPDO(&roundData, opcode, rFd);
break;
#endif
default:
nRc = 0;
}
/* The CPDO functions used to always set the destination type
to be the same as their working size. */
if (nRc != 0) {
/* If the operation succeeded, check to see if the result in the
destination register is the correct size. If not force it
to be. */
fpa11->fType[getFd(opcode)] = nDest;
#ifdef CONFIG_FPE_NWFPE_XP
if (nDest != nType) {
switch (nDest) {
case typeSingle:
{
if (typeDouble == nType)
rFd->fSingle = float64_to_float32(&roundData, rFd->fDouble);
else
rFd->fSingle = floatx80_to_float32(&roundData, rFd->fExtended);
}
break;
case typeDouble:
{
if (typeSingle == nType)
rFd->fDouble = float32_to_float64(rFd->fSingle);
else
rFd->fDouble = floatx80_to_float64(&roundData, rFd->fExtended);
}
break;
case typeExtended:
{
if (typeSingle == nType)
rFd->fExtended = float32_to_floatx80(rFd->fSingle);
else
rFd->fExtended = float64_to_floatx80(rFd->fDouble);
}
break;
}
}
#else
if (nDest != nType) {
if (nDest == typeSingle)
rFd->fSingle = float64_to_float32(&roundData, rFd->fDouble);
else
rFd->fDouble = float32_to_float64(rFd->fSingle);
}
#endif
}
if (roundData.exception)
float_raise(roundData.exception);
return nRc;
}
unsigned int EmulateCPDO(const unsigned int opcode)
{
FPA11 *fpa11 = GET_FPA11();
unsigned int Fd, nType, nDest, nRc = 1;
//printk("EmulateCPDO(0x%08x)\n",opcode);
/* Get the destination size. If not valid let Linux perform
an invalid instruction trap. */
nDest = getDestinationSize(opcode);
if (typeNone == nDest) return 0;
SetRoundingMode(opcode);
/* Compare the size of the operands in Fn and Fm.
Choose the largest size and perform operations in that size,
in order to make use of all the precision of the operands.
If Fm is a constant, we just grab a constant of a size
matching the size of the operand in Fn. */
if (MONADIC_INSTRUCTION(opcode))
nType = nDest;
else
nType = fpa11->fType[getFn(opcode)];
if (!CONSTANT_FM(opcode))
{
register unsigned int Fm = getFm(opcode);
if (nType < fpa11->fType[Fm])
{
nType = fpa11->fType[Fm];
}
}
switch (nType)
{
case typeSingle : nRc = SingleCPDO(opcode); break;
case typeDouble : nRc = DoubleCPDO(opcode); break;
case typeExtended : nRc = ExtendedCPDO(opcode); break;
default : nRc = 0;
}
/* If the operation succeeded, check to see if the result in the
destination register is the correct size. If not force it
to be. */
Fd = getFd(opcode);
nType = fpa11->fType[Fd];
if ((0 != nRc) && (nDest != nType))
{
switch (nDest)
{
case typeSingle:
{
if (typeDouble == nType)
fpa11->fpreg[Fd].fSingle =
float64_to_float32(fpa11->fpreg[Fd].fDouble, &fpa11->fp_status);
else
fpa11->fpreg[Fd].fSingle =
floatx80_to_float32(fpa11->fpreg[Fd].fExtended, &fpa11->fp_status);
}
break;
case typeDouble:
{
if (typeSingle == nType)
fpa11->fpreg[Fd].fDouble =
float32_to_float64(fpa11->fpreg[Fd].fSingle, &fpa11->fp_status);
else
fpa11->fpreg[Fd].fDouble =
floatx80_to_float64(fpa11->fpreg[Fd].fExtended, &fpa11->fp_status);
}
break;
case typeExtended:
{
if (typeSingle == nType)
fpa11->fpreg[Fd].fExtended =
float32_to_floatx80(fpa11->fpreg[Fd].fSingle, &fpa11->fp_status);
else
fpa11->fpreg[Fd].fExtended =
float64_to_floatx80(fpa11->fpreg[Fd].fDouble, &fpa11->fp_status);
}
break;
}
fpa11->fType[Fd] = nDest;
}
return nRc;
}
static void fmove_reg_mem(m68000_base_device *m68k, UINT16 w2)
{
int ea = m68k->ir & 0x3f;
int src = (w2 >> 7) & 0x7;
int dst = (w2 >> 10) & 0x7;
int k = (w2 & 0x7f);
switch (dst)
{
case 0: // Long-Word Integer
{
INT32 d = (INT32)floatx80_to_int32(REG_FP(m68k)[src]);
WRITE_EA_32(m68k, ea, d);
break;
}
case 1: // Single-precision Real
{
UINT32 d = floatx80_to_float32(REG_FP(m68k)[src]);
WRITE_EA_32(m68k, ea, d);
break;
}
case 2: // Extended-precision Real
{
WRITE_EA_FPE(m68k, ea, REG_FP(m68k)[src]);
break;
}
case 3: // Packed-decimal Real with Static K-factor
{
// sign-extend k
k = (k & 0x40) ? (k | 0xffffff80) : (k & 0x7f);
WRITE_EA_PACK(m68k, ea, k, REG_FP(m68k)[src]);
break;
}
case 4: // Word Integer
{
int32 value = floatx80_to_int32(REG_FP(m68k)[src]);
if (value > 0x7fff || value < -0x8000 )
{
REG_FPSR(m68k) |= FPES_OE | FPAE_IOP;
}
WRITE_EA_16(m68k, ea, (INT16)value);
break;
}
case 5: // Double-precision Real
{
UINT64 d;
d = floatx80_to_float64(REG_FP(m68k)[src]);
WRITE_EA_64(m68k, ea, d);
break;
}
case 6: // Byte Integer
{
int32 value = floatx80_to_int32(REG_FP(m68k)[src]);
if (value > 127 || value < -128)
{
REG_FPSR(m68k) |= FPES_OE | FPAE_IOP;
}
WRITE_EA_8(m68k, ea, (INT8) value);
break;
}
case 7: // Packed-decimal Real with Dynamic K-factor
{
WRITE_EA_PACK(m68k, ea, REG_D(m68k)[k>>4], REG_FP(m68k)[src]);
break;
}
}
m68k->remaining_cycles -= 12;
}