ObjFW  Diff

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#import "OFInvalidFormatException.h"
#import "OFOutOfMemoryException.h"

#import "invoke-x86_64.h"

#import "macros.h"

struct call_context {
	uint64_t GPR[NUM_GPR_IN + NUM_GPR_OUT];
	__m128 SSE[NUM_SSE_INOUT];
	long double X87[NUM_X87_OUT];
struct CallContext {
	uint64_t GPR[numGPRIn + numGPROut];
	__m128 SSE[numSSEInOut];
	long double X87[numX87Out];
	uint8_t numSSEUsed;
	uint8_t returnType;
	uint64_t stackSize;
	uint64_t stack[];
};

extern void of_invocation_call(struct call_context *);
extern void OFInvocationCall(struct CallContext *);

static void
pushGPR(struct call_context **context, uint_fast8_t *currentGPR, uint64_t value)
pushGPR(struct CallContext **context, uint_fast8_t *currentGPR, uint64_t value)
{
	struct call_context *newContext;
	struct CallContext *newContext;

	if (*currentGPR < NUM_GPR_IN) {
	if (*currentGPR < numGPRIn) {
		(*context)->GPR[(*currentGPR)++] = value;
		return;
	}

	if ((newContext = realloc(*context,
	    sizeof(**context) + ((*context)->stackSize + 1) * 8)) == NULL) {
		free(*context);
		@throw [OFOutOfMemoryException exceptionWithRequestedSize:
		    sizeof(**context) + ((*context)->stackSize + 1) * 8];
	}

	newContext->stack[newContext->stackSize] = value;
	newContext->stackSize++;
	*context = newContext;
}

static void
pushDouble(struct call_context **context, uint_fast8_t *currentSSE,
pushDouble(struct CallContext **context, uint_fast8_t *currentSSE,
    double value)
{
	struct call_context *newContext;
	struct CallContext *newContext;

	if (*currentSSE < NUM_SSE_INOUT) {
	if (*currentSSE < numSSEInOut) {
		(*context)->SSE[(*currentSSE)++] = (__m128)_mm_set_sd(value);
		(*context)->numSSEUsed++;
		return;
	}

	if ((newContext = realloc(*context,
	    sizeof(**context) + ((*context)->stackSize + 1) * 8)) == NULL) {
		free(*context);
		@throw [OFOutOfMemoryException exceptionWithRequestedSize:
		    sizeof(**context) + ((*context)->stackSize + 1) * 8];
	}

	memcpy(&newContext->stack[newContext->stackSize], &value, 8);
	newContext->stackSize++;
	*context = newContext;
}

static void
pushQuad(struct call_context **context, uint_fast8_t *currentSSE,
pushQuad(struct CallContext **context, uint_fast8_t *currentSSE,
    double low, double high)
{
	size_t stackSize;
	struct call_context *newContext;
	struct CallContext *newContext;

	if (*currentSSE + 1 < NUM_SSE_INOUT) {
	if (*currentSSE + 1 < numSSEInOut) {
		(*context)->SSE[(*currentSSE)++] = (__m128)_mm_set_sd(low);
		(*context)->SSE[(*currentSSE)++] = (__m128)_mm_set_sd(high);
		(*context)->numSSEUsed += 2;
		return;
	}

	stackSize = (*context)->stackSize + 2;
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	memcpy(&newContext->stack[stackSize - 2], &low, 8);
	memcpy(&newContext->stack[stackSize - 1], &high, 8);
	newContext->stackSize = stackSize;
	*context = newContext;
}

static void
pushLongDouble(struct call_context **context, long double value)
pushLongDouble(struct CallContext **context, long double value)
{
	struct call_context *newContext;
	struct CallContext *newContext;

	if ((newContext = realloc(*context,
	    sizeof(**context) + ((*context)->stackSize + 2) * 8)) == NULL) {
		free(*context);
		@throw [OFOutOfMemoryException exceptionWithRequestedSize:
		    sizeof(**context) + ((*context)->stackSize + 2) * 8];
	}

	memcpy(&newContext->stack[newContext->stackSize], &value, 16);
	newContext->stackSize += 2;
	*context = newContext;
}

static void
pushLongDoublePair(struct call_context **context, long double value[2])
pushLongDoublePair(struct CallContext **context, long double value[2])
{
	size_t stackSize;
	struct call_context *newContext;
	struct CallContext *newContext;

	stackSize = OF_ROUND_UP_POW2(2UL, (*context)->stackSize) + 4;
	stackSize = OFRoundUpToPowerOf2(2UL, (*context)->stackSize) + 4;

	if ((newContext = realloc(*context,
	    sizeof(**context) + stackSize * 8)) == NULL) {
		free(*context);
		@throw [OFOutOfMemoryException exceptionWithRequestedSize:
		    sizeof(**context) + stackSize * 8];
	}

	memset(&newContext->stack[newContext->stackSize], '\0',
	    (stackSize - newContext->stackSize) * 8);
	memcpy(&newContext->stack[stackSize - 4], value, 32);
	newContext->stackSize = stackSize;
	*context = newContext;
}

#if defined(__SIZEOF_INT128__) && !defined(__clang__)
static void
pushInt128(struct call_context **context, uint_fast8_t *currentGPR,
pushInt128(struct CallContext **context, uint_fast8_t *currentGPR,
    uint64_t value[2])
{
	size_t stackSize;
	struct call_context *newContext;
	struct CallContext *newContext;

	if (*currentGPR + 1 < NUM_GPR_IN) {
	if (*currentGPR + 1 < numGPRIn) {
		(*context)->GPR[(*currentGPR)++] = value[0];
		(*context)->GPR[(*currentGPR)++] = value[1];
		return;
	}

	stackSize = OF_ROUND_UP_POW2(2, (*context)->stackSize) + 2;
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	memcpy(&newContext->stack[stackSize - 2], value, 16);
	newContext->stackSize = stackSize;
	*context = newContext;
}
#endif

void
of_invocation_invoke(OFInvocation *invocation)
OFInvocationInvoke(OFInvocation *invocation)
{
	OFMethodSignature *methodSignature = invocation.methodSignature;
	size_t numberOfArguments = methodSignature.numberOfArguments;
	struct call_context *context;
	struct CallContext *context;
	const char *typeEncoding;
	uint_fast8_t currentGPR = 0, currentSSE = 0;

	if ((context = calloc(sizeof(*context), 1)) == NULL)
		@throw [OFOutOfMemoryException exception];

	for (size_t i = 0; i < numberOfArguments; i++) {
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	case '^':
#ifdef __SIZEOF_INT128__
	case 't':
	case 'T':
#endif
	case 'f':
	case 'd':
		context->returnType = RETURN_TYPE_NORMAL;
		context->returnType = returnTypeNormal;
		break;
	case 'D':
		context->returnType = RETURN_TYPE_X87;
		context->returnType = returnTypeX87;
		break;
	case 'j':
		switch (typeEncoding[1]) {
		case 'f':
		case 'd':
			context->returnType = RETURN_TYPE_NORMAL;
			context->returnType = returnTypeNormal;
			break;
		case 'D':
			context->returnType = RETURN_TYPE_COMPLEX_X87;
			context->returnType = returnTypeComplexX87;
			break;
		default:
			free(context);
			@throw [OFInvalidFormatException exception];
		}

		break;
	/* TODO: '[' */
	/* TODO: '{' */
	/* TODO: '(' */
	default:
		free(context);
		@throw [OFInvalidFormatException exception];
	}

	of_invocation_call(context);
	OFInvocationCall(context);

	switch (*typeEncoding) {
		case 'v':
			break;
#define CASE_GPR(encoding, type)					   \
		case encoding:						   \
			{						   \
				type tmp = (type)context->GPR[NUM_GPR_IN]; \
				[invocation setReturnValue: &tmp];	   \
			}						   \
#define CASE_GPR(encoding, type)					 \
		case encoding:						 \
			{						 \
				type tmp = (type)context->GPR[numGPRIn]; \
				[invocation setReturnValue: &tmp];	 \
			}						 \
			break;
		CASE_GPR('c', char)
		CASE_GPR('C', unsigned char)
		CASE_GPR('i', int)
		CASE_GPR('I', unsigned int)
		CASE_GPR('s', short)
		CASE_GPR('S', unsigned short)
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		CASE_GPR('#', Class)
		CASE_GPR(':', SEL)
		CASE_GPR('^', void *)
#undef CASE_GPR
#ifdef __SIZEOF_INT128__
		case 't':
		case 'T':;
			[invocation setReturnValue: &context->GPR[NUM_GPR_IN]];
			[invocation setReturnValue: &context->GPR[numGPRIn]];
			break;
#endif
		case 'f':;
			float floatTmp;
			_mm_store_ss(&floatTmp, context->SSE[0]);
			[invocation setReturnValue: &floatTmp];
			break;
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Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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