/
dax64win64business.h
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/
dax64win64business.h
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/*
* dax64win64business.h
*
* Body of the various callIA32XXXReturn functions.
* Call a foreign function according to x64-ish win64-ish ABI rules.
* N.B. In Cog Stack and Cogit VMs numArgs is negative to access args from
* the downward-growing stack.
*/
long long i;
long long size;
long long nextReg;
int64_or_double regs[NUM_REG_ARGS];
sqInt funcAlien;
sqInt resultMaybeAlien;
long long argvec;
long long argstart;
int sig;
assert(sizeof(long long) == sizeof(void*)); /* Will need to fix for Windows. */
if (numArgs < 0) {
/* Stack or Cog VM. Need to access args downwards from first arg. */
for (i = size = 0; --i >= numArgs;) {
sqInt arg = argVector[i + 1];
if (objIsAlien(arg) && (sizeField(arg) != 0))
/* Direct or indirect Alien. */
size += RoundUpPowerOfTwo(SQABS(sizeField(arg)), 8);
else if (interpreterProxy->isFloatObject(arg))
size += sizeof(double);
else
/* Assume an integer or pointer Alien. Check below. */
size += sizeof(long long);
}
}
else {
/* Context Interpreter or array version of callout primitive. */
for (i = numArgs, size = 0; --i >= 0;) {
sqInt arg = argVector[i];
if (objIsAlien(arg) && (sizeField(arg) != 0))
/* Direct or indirect Alien. */
size += RoundUpPowerOfTwo(SQABS(sizeField(arg)), 8);
else if (interpreterProxy->isFloatObject(arg))
size += sizeof(double);
else
/* Assume an integer or pointer Alien. Check below. */
size += sizeof(long long);
}
}
size = RoundUpPowerOfTwo(size, STACK_ALIGN_BYTES);
argstart = argvec = (long long)alloca(size);
nextReg = 0;
sig = 0;
#define MaybePassAsRegArg(expr) \
if (nextReg < NUM_REG_ARGS) \
regs[nextReg++].i = expr; \
else { \
*(long long*)argvec = expr; \
argvec += sizeof(long long); \
}
#define MaybePassAsDRegArg(expr) \
if (nextReg < NUM_REG_ARGS) { \
sig += (1<<nextReg); \
regs[nextReg++].d = expr; \
} else { \
argvec = RoundUpPowerOfTwo(argvec, 8); \
*(double*) argvec = expr; \
argvec += sizeof(double); \
}
if (numArgs < 0) {
/* Stack or Cog VM. Need to access args downwards from first arg. */
for (i = size = 0; --i >= numArgs;) {
sqInt arg = argVector[i+1];
if (isSmallInt(arg)) {
MaybePassAsRegArg(intVal(arg))
}
else if (objIsAlien(arg)) {
long long argByteSize;
if ((size = sizeField(arg)) == 0) /* Pointer Alien. */
size = argByteSize = sizeof(void *);
else /* Direct or indirect Alien. */
argByteSize = llabs(size);
if ((argByteSize <= sizeof(long long)) && (nextReg < NUM_REG_ARGS)) {
regs[nextReg++].i = *(long long*)startOfDataWithSize(arg, size);
}
else {
memcpy((void*)argvec, startOfDataWithSize(arg, size), argByteSize);
argvec += RoundUpPowerOfTwo(argByteSize, 8);
}
}
else if (objIsUnsafeAlien(arg)) {
sqInt bitsObj = interpreterProxy->fetchPointerofObject(0,arg);
long long v = (long long)interpreterProxy->firstIndexableField(bitsObj);
MaybePassAsRegArg(v)
}
else if (interpreterProxy->isFloatObject(arg)) {
double d = interpreterProxy->floatValueOf(arg);
MaybePassAsDRegArg(d)
}
else {
long v = interpreterProxy->signed64BitValueOf(arg);
if (interpreterProxy->failed()) {
interpreterProxy->primitiveFailFor(0);
v = interpreterProxy->positive64BitValueOf(arg);
if (interpreterProxy->failed()) {
return PrimErrBadArgument;
}
}
MaybePassAsDRegArg(v)
}
}
}
else {
/* Context Interpreter or array version of callout primitive. */
for (i = 0; i < numArgs; i++) {
sqInt arg = argVector[i];
if (isSmallInt(arg))
MaybePassAsDRegArg(intVal(arg))
else if (objIsAlien(arg)) {
long long argByteSize;
if ((size = sizeField(arg)) == 0) /* Pointer Alien. */
size = argByteSize = sizeof(void *);
else /* Direct or indirect Alien. */
argByteSize = llabs(size);
if ((argByteSize <= sizeof(long long)) && (nextReg < NUM_REG_ARGS)) {
regs[nextReg++].i = *(long long*)startOfDataWithSize(arg, size);
}
else {
memcpy((void*)argvec, startOfDataWithSize(arg, size), argByteSize);
argvec += RoundUpPowerOfTwo(argByteSize, 8);
}
}
else if (objIsUnsafeAlien(arg)) {
sqInt bitsObj = interpreterProxy->fetchPointerofObject(0,arg);
long long v = (long long)interpreterProxy->firstIndexableField(bitsObj);
MaybePassAsRegArg(v)
}
else if (interpreterProxy->isFloatObject(arg)) {
double d = interpreterProxy->floatValueOf(arg);
MaybePassAsDRegArg(d)
}
else {
long long v = interpreterProxy->signed64BitValueOf(arg);
if (interpreterProxy->failed()) {
interpreterProxy->primitiveFailFor(0);
v = interpreterProxy->positive64BitValueOf(arg);
if (interpreterProxy->failed()) {
return PrimErrBadArgument;
}
}
MaybePassAsRegArg(v)
}
}
}
funcAlien = interpreterProxy->stackValue(funcOffset);
/* Note that this call pass any combination of int/double parameters in registers.
*/
switch( sig ) {
case 0x0:
f0=*(void**)startOfParameterData(funcAlien);
r = f0( regs[0].i , regs[1].i , regs[2].i , regs[3].i);
break;
case 0x1:
f1=*(void**)startOfParameterData(funcAlien);
r = f1( regs[0].d , regs[1].i , regs[2].i, regs[3].i);
break;
case 0x2:
f2=*(void**)startOfParameterData(funcAlien);
r = f2( regs[0].i , regs[1].d , regs[2].i, regs[3].i);
break;
case 0x3:
f3=*(void**)startOfParameterData(funcAlien);
r = f3( regs[0].d , regs[1].d , regs[2].i, regs[3].i);
break;
case 0x4:
f4=*(void**)startOfParameterData(funcAlien);
r = f4( regs[0].i , regs[1].i , regs[2].d , regs[3].i);
break;
case 0x5:
f5=*(void**)startOfParameterData(funcAlien);
r = f5( regs[0].d , regs[1].i , regs[2].d , regs[3].i);
break;
case 0x6:
f6=*(void**)startOfParameterData(funcAlien);
r = f6( regs[0].i , regs[1].d , regs[2].d , regs[3].i);
break;
case 0x7:
f7=*(void**)startOfParameterData(funcAlien);
r = f7( regs[0].d , regs[1].d , regs[2].d , regs[3].i);
break;
case 0x8:
f8=*(void**)startOfParameterData(funcAlien);
r = f8( regs[0].i , regs[1].i , regs[2].i , regs[3].d);
break;
case 0x9:
f9=*(void**)startOfParameterData(funcAlien);
r = f9( regs[0].d , regs[1].i , regs[2].i, regs[3].d);
break;
case 0xA:
fA=*(void**)startOfParameterData(funcAlien);
r = fA( regs[0].i , regs[1].d , regs[2].i, regs[3].d);
break;
case 0xB:
fB=*(void**)startOfParameterData(funcAlien);
r = fB( regs[0].d , regs[1].d , regs[2].i, regs[3].d);
break;
case 0xC:
fC=*(void**)startOfParameterData(funcAlien);
r = fC( regs[0].i , regs[1].i , regs[2].d , regs[3].d);
break;
case 0xD:
fD=*(void**)startOfParameterData(funcAlien);
r = fD( regs[0].d , regs[1].i , regs[2].d , regs[3].d);
break;
case 0xE:
fE=*(void**)startOfParameterData(funcAlien);
r = fE( regs[0].i , regs[1].d , regs[2].d , regs[3].d);
break;
case 0xF:
fF=*(void**)startOfParameterData(funcAlien);
r = fF( regs[0].d , regs[1].d , regs[2].d , regs[3].d);
break;
default:
r = 0;
}
/* Post call need to refresh stack pointer in case of call-back and GC. */
resultMaybeAlien = interpreterProxy->stackValue(resultOffset);
if (objIsAlien(resultMaybeAlien)) {
size = sizeField(resultMaybeAlien);
if (size == 0) /* Pointer Alien. */
size = sizeof(long long);
memcpy(startOfDataWithSize(resultMaybeAlien, size),
&r,
min((unsigned long long)llabs(size), sizeof(r)));
}
return PrimNoErr;