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opcodemap.c
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#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <ctype.h>
#include "consts.h"
#include "types.h"
#include "opcodemap.h"
#include "parser.h"
typedef enum {
ValidOperandAddressing_None = 0,
ValidOperandAddressing_Instant = 1,
ValidOperandAddressing_Direct = 2,
ValidOperandAddressing_VaryingIndexing = 4,
ValidOperandAddressing_DirectRegister = 8,
ValidOperandAddressing_AllExceptInstant = ValidOperandAddressing_Direct |
ValidOperandAddressing_VaryingIndexing |
ValidOperandAddressing_DirectRegister,
ValidOperandAddressing_All = ValidOperandAddressing_Instant |
ValidOperandAddressing_Direct |
ValidOperandAddressing_VaryingIndexing |
ValidOperandAddressing_DirectRegister
} ValidOperandAddressing;
static char *OPCODE_TO_NAME[NUMBER_OF_OPCODES] = { NULL };
static OpcodeHandler OPCODE_TO_HANDLER[NUMBER_OF_OPCODES] = { NULL };
/*
"mov", "cmp", "add", "sub", "not", "clr", "lea", "inc",
"dec", "jmp", "bne", "red", "prn", "jsr", "rts", "stop" };
*/
typedef struct tOpcodeMapEntry{
char name[OPCODE_NAME_LENGTH];
OpcodeLayout opcode;
} OpcodeMapEntry, *OpcodeMapEntryPtr;
void initNameMap()
{
if (OPCODE_TO_NAME[0] != NULL) return;
OPCODE_TO_NAME[Opcode_mov] = "mov";
OPCODE_TO_NAME[Opcode_cmp] = "cmp";
OPCODE_TO_NAME[Opcode_add] = "add";
OPCODE_TO_NAME[Opcode_sub] = "sub";
OPCODE_TO_NAME[Opcode_not] = "not";
OPCODE_TO_NAME[Opcode_clr] = "clr";
OPCODE_TO_NAME[Opcode_lea] = "lea";
OPCODE_TO_NAME[Opcode_inc] = "inc";
OPCODE_TO_NAME[Opcode_dec] = "dec";
OPCODE_TO_NAME[Opcode_jmp] = "jmp";
OPCODE_TO_NAME[Opcode_bne] = "bne";
OPCODE_TO_NAME[Opcode_red] = "red";
OPCODE_TO_NAME[Opcode_prn] = "prn";
OPCODE_TO_NAME[Opcode_jsr] = "jsr";
OPCODE_TO_NAME[Opcode_rts] = "rts";
OPCODE_TO_NAME[Opcode_stop] = "stop";
}
void initHandlerMap()
{
void fillMovOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillCmpOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillAddOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillSubOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillNotOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillClrOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillLeaOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillIncOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillDecOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillJmpOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillBneOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillRedOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillPrnOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillJsrOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillRtsOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
void fillStopOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation);
if (OPCODE_TO_HANDLER[0] != NULL) return;
OPCODE_TO_HANDLER[Opcode_mov] = fillMovOpcode;
OPCODE_TO_HANDLER[Opcode_cmp] = fillCmpOpcode;
OPCODE_TO_HANDLER[Opcode_add] = fillAddOpcode;
OPCODE_TO_HANDLER[Opcode_sub] = fillSubOpcode;
OPCODE_TO_HANDLER[Opcode_not] = fillNotOpcode;
OPCODE_TO_HANDLER[Opcode_clr] = fillClrOpcode;
OPCODE_TO_HANDLER[Opcode_lea] = fillLeaOpcode;
OPCODE_TO_HANDLER[Opcode_inc] = fillIncOpcode;
OPCODE_TO_HANDLER[Opcode_dec] = fillDecOpcode;
OPCODE_TO_HANDLER[Opcode_jmp] = fillJmpOpcode;
OPCODE_TO_HANDLER[Opcode_bne] = fillBneOpcode;
OPCODE_TO_HANDLER[Opcode_red] = fillRedOpcode;
OPCODE_TO_HANDLER[Opcode_prn] = fillPrnOpcode;
OPCODE_TO_HANDLER[Opcode_jsr] = fillJsrOpcode;
OPCODE_TO_HANDLER[Opcode_rts] = fillRtsOpcode;
OPCODE_TO_HANDLER[Opcode_stop] = fillStopOpcode;
}
Boolean isValidOpcodeName(char *instruction)
{
int i;
initNameMap();
for (i = 0; i < sizeof(OPCODE_TO_NAME) / sizeof(char *); i++)
{
if (strcmp(instruction, OPCODE_TO_NAME[i]) == 0)
{
return True;
}
}
return False;
}
void setSourceLineError(SourceLinePtr sourceLine, char *error, ...)
{
char buffer[MESSAGE_BUFFER_LENGTH];
va_list ap;
va_start(ap, error);
vsprintf(buffer, error, ap);
va_end(ap);
sourceLine->error = cloneString(buffer, strlen(buffer));
}
char *getOpcodeNameToken(SourceLinePtr sourceLine)
{
char *separator;
char *name;
separator = strchr(sourceLine->text, OPCODE_CONTROL_PARAMETER_SEPARATOR);
if (separator == NULL)
{
return NULL;
}
name = cloneString(sourceLine->text, separator - sourceLine->text);
return name;
}
Boolean tryReadOpcode(SourceLinePtr sourceLine, Opcode *opcode)
{
int i;
char *separator;
char *name;
Boolean found = False;
initNameMap();
separator = strchr(sourceLine->text, OPCODE_CONTROL_PARAMETER_SEPARATOR);
if (separator == NULL)
{
setSourceLineError(sourceLine, "Missing opcode and opcode parameter separator '%c'.", OPCODE_CONTROL_PARAMETER_SEPARATOR);
return False;
}
/* the opcode parameter separator is assumed to come right after the '/' */
name = getOpcodeNameToken(sourceLine);
for (i = 0; i < sizeof(OPCODE_TO_NAME) / sizeof(char *); i++)
{
if (strcmp(name, OPCODE_TO_NAME[i]) == 0)
{
*opcode = i;
sourceLine->text = separator;
found = True;
break;
}
}
free(name);
return found;
}
char* getOpcodeName(Opcode opcode)
{
int length;
char *name;
/* at this stage the opcode was already checked for existence */
initNameMap();
length = strlen(OPCODE_TO_NAME[opcode]) + 1;
name = cloneString(OPCODE_TO_NAME[opcode], length);
return name;
}
OpcodeHandler getOpcodeHandler(Opcode opcode)
{
initHandlerMap();
return OPCODE_TO_HANDLER[opcode];
}
Boolean readInstructionOperandSize(SourceLinePtr sourceLine, OpcodeLayoutPtr instruction)
{
void setSourceLineError(SourceLinePtr sourceLine, char *error, ...);
/* assumed to be a single character, otherwise more
* clever string manipulation is required */
int type = (*sourceLine->text) - '0';
switch (type)
{
case InstructionOperandSize_Small:
instruction->type = InstructionOperandSize_Small;
break;
case InstructionOperandSize_Large:
instruction->type = InstructionOperandSize_Large;
break;
default:
setSourceLineError(sourceLine, "Unknown operand size type %d", type);
return False;
}
/* skip 'type' value */
sourceLine->text++;
return True;
}
Boolean readInstructionRepetition(SourceLinePtr sourceLine, OpcodeLayoutPtr instruction)
{
void setSourceLineError(SourceLinePtr sourceLine, char *error, ...);
/* assumed to be a single character, otherwise more
* clever string manipulation is required */
int dbl = (*sourceLine->text) - '0';
switch (dbl)
{
case InstructionRepetition_Single:
instruction->dbl = InstructionRepetition_Single;
break;
case InstructionRepetition_Double:
instruction->dbl = InstructionRepetition_Double;
break;
default:
setSourceLineError(sourceLine, "Unknown instruction repetition type %d", dbl);
return False;
}
sourceLine->text++;
return True;
}
/* returns a pointer to the first OPERAND_SEPERATOR or EOL.
* never NULL because EOL is always present.*/
char *getOperandTokenEnd(SourceLinePtr sourceLine)
{
char *start = sourceLine->text;
char *end = strchr(start, OPERAND_SEPERATOR);
if (end == NULL)
{
end = strchr(start, EOL);
}
end--;
while (end > start && isspace(*end)) end--;
/* end now points to the last char of the label */
end++;
return end;
}
void readInstantAddressingOperand(SourceLinePtr sourceLine, OperandPtr operand)
{
int value;
if (*sourceLine->text == INSTANT_ADDRESSING_OPERAND_PREFIX)
{
sourceLine->text += INSTANT_ADDRESSING_OPERAND_PREFIX_LENGTH;
}
if (!tryReadNumber(sourceLine, &value))
{
setSourceLineError(sourceLine, "Unable to read number for direct addressing operand.");
return;
}
operand->addressing = OperandAddressing_Instant;
operand->address.value = value;
operand->empty = False;
}
void readDirectRegisterAddressingOperand(SourceLinePtr sourceLine, OperandPtr operand)
{
int registerId;
if (*sourceLine->text == REGISTER_NAME_PREFIX)
{
sourceLine->text += REGISTER_NAME_PREFIX_LENGTH;
}
if (!tryReadNumber(sourceLine, ®isterId))
{
setSourceLineError(sourceLine, "Unable to read register id for direct register address operand.");
return;
}
if (!IS_VALID_REGISTER_ID(registerId))
{
setSourceLineError(sourceLine, "%d is not a valid register id.", registerId);
return;
}
operand->addressing = OperandAddressing_DirectRegister;
operand->address.reg[0] = REGISTER_NAME_PREFIX;
operand->address.reg[1] = registerId + '0';
operand->address.reg[2] = EOL;
operand->empty = False;
}
void readDirectAddressingOperand(SourceLinePtr sourceLine, OperandPtr operand)
{
char *getOperandTokenEnd(SourceLinePtr sourceLine);
char *start, *end, *label;
start = sourceLine->text;
end = getOperandTokenEnd(sourceLine);
if (!isValidLabel(sourceLine, start, end))
{
setSourceLineError(sourceLine, "Invalid label '%s' for direct addressing operand.", start);
return;
}
label = tryReadLabel(sourceLine);
operand->addressing = OperandAddressing_Direct;
operand->address.label = label;
operand->empty = False;
}
void readVaryingAddressingOperand(SourceLinePtr sourceLine, OperandPtr operand)
{
char *start, *opening, *closing;
char *label;
char *originalPosition;
int length;
int registerId;
int offset;
char *offsetStr;
start = sourceLine->text;
opening = strchr(start, VARYING_INDEXING_OPENING_TOKEN);
if (opening == NULL)
{
setSourceLineError(sourceLine, "Missing '%c' token from varying address operand.", VARYING_INDEXING_OPENING_TOKEN);
return;
}
closing = strchr(start, VARYING_INDEXING_CLOSING_TOKEN);
if (closing == NULL)
{
setSourceLineError(sourceLine, "Missing '%c' token from varying address operand.", VARYING_INDEXING_CLOSING_TOKEN);
return;
}
label = cloneString(start, opening - start);
start = opening + VARYING_INDEXING_OPENING_TOKEN_LENGTH;
if (*start == VARYING_INDEXING_LABEL_TOKEN)
{
start += VARYING_INDEXING_LABEL_TOKEN_LENGTH;
if (!isValidLabel(sourceLine, start, closing - 1))
{
setSourceLineError(sourceLine, "Invalid label name for labeled varying indexing.");
return;
}
length = closing - start;
operand->address.varyingAddress.adressing = OperandVaryingAddressing_Direct;
operand->address.varyingAddress.address.label = cloneString(start, length);
goto postProcess;
}
if (*start == REGISTER_NAME_PREFIX && closing - start == REGISTER_NAME_LENGTH)
{
start += REGISTER_NAME_PREFIX_LENGTH;
sourceLine->text = start;
if (!tryReadNumber(sourceLine, ®isterId) || !IS_VALID_REGISTER_ID(registerId))
{
setSourceLineError(sourceLine, "Invalid register id.");
return;
}
operand->address.varyingAddress.adressing = OperandVaryingAddressing_DirectRegister;
operand->address.varyingAddress.address.reg[0] = REGISTER_NAME_PREFIX;
operand->address.varyingAddress.address.reg[1] = registerId + '0';
operand->address.varyingAddress.address.reg[2] = EOL;
goto postProcess;
}
originalPosition = sourceLine->text;
sourceLine->text = start;
if (!tryReadNumber(sourceLine, &offset))
{
offsetStr = cloneString(start, closing - start);
setSourceLineError(sourceLine, "Invalid offset value '%s' for varying index %s.", offsetStr, label);
/* restore the cursor to its original position */
sourceLine->text = originalPosition;
return;
}
operand->address.varyingAddress.adressing = OperandVaryingAddressing_Instant;
operand->address.varyingAddress.address.value = offset;
postProcess:
operand->addressing = OperandAddressing_VaryingIndexing;
operand->address.label = label;
operand->empty = False;
sourceLine->text = closing + VARYING_INDEXING_CLOSING_TOKEN_LENGTH;
}
Boolean readSourceOperand(SourceLinePtr sourceLine, ValidOperandAddressing validAddressing, InstructionLayoutPtr instruction)
{
Boolean readOperand(SourceLinePtr sourceLine, ValidOperandAddressing validAddressing, OperandPtr operand);
skipWhitespace(sourceLine);
if (!readOperand(sourceLine, validAddressing, &instruction->leftOperand))
{
return False;
}
return True;
}
Boolean readDestinationOperand(SourceLinePtr sourceLine,
ValidOperandAddressing validAddressing,
InstructionLayoutPtr instruction)
{
Boolean readOperand(SourceLinePtr sourceLine, ValidOperandAddressing validAddressing, OperandPtr operand);
char *operandEnd;
char *message;
skipWhitespace(sourceLine);
operandEnd = strchr(sourceLine->text, EOL);
if (operandEnd == NULL)
{
setSourceLineError(sourceLine, "Missing EOL?!");
return False;
}
if (!readOperand(sourceLine, validAddressing, &instruction->rightOperand))
{
return False;
}
skipWhitespace(sourceLine);
if (*sourceLine->text != EOL)
{
message = "There should be no text after the second operand.";
if (strchr(sourceLine->text, VARYING_INDEXING_OPENING_TOKEN) == NULL)
{
setSourceLineError(sourceLine, "%s", message);
}
else
{
setSourceLineError(sourceLine, "%s There should be no white space between the label and the index token '%c'.", message, VARYING_INDEXING_OPENING_TOKEN);
}
return False;
}
return True;
}
/* tells if the current operand addressing is on. */
/* could be written with a macro but because we are dealing
* with enums a functions looks more appropriate. */
Boolean addressingTypeIsAllowed(ValidOperandAddressing addressingMask, ValidOperandAddressing allowedAddressing)
{
if (allowedAddressing == ValidOperandAddressing_None)
{
return addressingMask == ValidOperandAddressing_None;
}
return (addressingMask & allowedAddressing) == allowedAddressing;
}
Boolean readOperand(SourceLinePtr sourceLine, ValidOperandAddressing validAddressing, OperandPtr operand)
{
char *start, *end, *openingBracket, *closingBracket;
skipWhitespace(sourceLine);
if (addressingTypeIsAllowed(validAddressing, ValidOperandAddressing_None))
{
if ((*sourceLine->text) == EOL)
{
#ifdef DEBUG
printf("No operands.\n");
#endif
return True;
}
else
{
setSourceLineError(sourceLine, "Opcode should have no operands.");
return False;
}
}
if (addressingTypeIsAllowed(validAddressing, ValidOperandAddressing_Instant))
{
if ((*sourceLine->text) == INSTANT_ADDRESSING_OPERAND_PREFIX)
{
readInstantAddressingOperand(sourceLine, operand);
#ifdef DEBUG
printf("Found an instant address operand with the value of %ld\n", operand->address.value);
#endif
return sourceLine->error == NULL;
}
}
if (addressingTypeIsAllowed(validAddressing, ValidOperandAddressing_DirectRegister))
{
if ((*sourceLine->text) == REGISTER_NAME_PREFIX)
{
readDirectRegisterAddressingOperand(sourceLine, operand);
#ifdef DEBUG
printf("Found a direct register address operand with the value of %s\n", operand->address.reg);
#endif
return sourceLine->error == NULL;
}
}
if (addressingTypeIsAllowed(validAddressing, ValidOperandAddressing_VaryingIndexing))
{
start = sourceLine->text;
end = getOperandTokenEnd(sourceLine);
openingBracket = strchr(start, VARYING_INDEXING_OPENING_TOKEN);
closingBracket = strchr(start, VARYING_INDEXING_CLOSING_TOKEN);
if (openingBracket != NULL &&
closingBracket != NULL &&
openingBracket < closingBracket &&
closingBracket <= end)
{
readVaryingAddressingOperand(sourceLine, operand);
#ifdef DEBUG
switch (operand->address.varyingAddress.adressing)
{
case OperandVaryingAddressing_Direct:
printf("Found varying addressing operand %s with direct address %s.\n", operand->address.varyingAddress.label, operand->address.varyingAddress.address.label);
break;
case OperandVaryingAddressing_DirectRegister:
printf("Found varying addressing operand %s with direct register %s.\n", operand->address.varyingAddress.label, operand->address.varyingAddress.address.reg);
break;
case OperandVaryingAddressing_Instant:
printf("Found varying addressing operand %s with offset %ld.\n", operand->address.varyingAddress.label, operand->address.varyingAddress.address.value);
break;
default:
printf("Unknown OperandVaryingAddressing value!\n");
}
#endif
return sourceLine->error == NULL;
}
}
if (addressingTypeIsAllowed(validAddressing, ValidOperandAddressing_Direct))
{
start = sourceLine->text;
end = getOperandTokenEnd(sourceLine);
if (isValidLabel(sourceLine, start, end))
{
readDirectAddressingOperand(sourceLine, operand);
#ifdef DEBUG
printf("Found direct addressing operand with the label %s.\n", operand->address.label);
#endif
return sourceLine->error == NULL;
}
}
setSourceLineError(sourceLine, "Unknown operand addressing scheme.\n");
return False;
}
Boolean setComb(SourceLinePtr sourceLine, OpcodeLayoutPtr instructionRepresentation)
{
void setSourceLineError(SourceLinePtr sourceLine, char *error, ...);
OperandTargetBits sourceOperandTargetBits;
OperandTargetBits targetOperandTargetBits;
/* if the operand size is small (10 bits instead of 20) we need to set
the comb bits to tell how to address each operand */
if (instructionRepresentation->type == InstructionOperandSize_Large)
{
/* the instruction operates on the entire word size so
there is no need to set cmb */
instructionRepresentation->comb = 0;
return True;
}
if ((*sourceLine->text) == OPCODE_CONTROL_PARAMETER_SEPARATOR)
{
sourceLine->text += OPCODE_CONTROL_PARAMETER_SEPERATOR_LENGTH;
}
/* the first operand is always the source and the second is always the target */
/* so the first number relates to the source and the second to the target */
sourceOperandTargetBits = (*sourceLine->text) - '0';
switch (sourceOperandTargetBits)
{
case OperandTargetBits_HighNibble:
instructionRepresentation->comb &= ~COMB_SOURCE_OPERAND_MASK;
break;
case OperandTargetBits_LowNibble:
instructionRepresentation->comb |= COMB_SOURCE_OPERAND_MASK;
break;
default:
setSourceLineError(sourceLine, "Unknown value '%d' for bits to use.", sourceOperandTargetBits);
return False;
}
/* skip the value */
sourceLine->text++;
if ((*sourceLine->text) != OPCODE_CONTROL_PARAMETER_SEPARATOR)
{
setSourceLineError(sourceLine, "'%c' required between the operand bit sizes to use.", OPCODE_CONTROL_PARAMETER_SEPARATOR);
return False;
}
/* skip the '/' */
sourceLine->text++;
targetOperandTargetBits = (*sourceLine->text) - '0';
switch (targetOperandTargetBits)
{
case OperandTargetBits_HighNibble:
instructionRepresentation->comb &= ~COMB_TARGET_OPERAND_MASK;
break;
case OperandTargetBits_LowNibble:
instructionRepresentation->comb |= COMB_TARGET_OPERAND_MASK;
break;
default:
setSourceLineError(sourceLine, "Unknown value '%d' for bits to use.", targetOperandTargetBits);
return False;
}
/* skip the value */
sourceLine->text++;
return True;
}
Boolean readInstructionModifiers(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
Boolean setComb(SourceLinePtr sourceLine, OpcodeLayoutPtr opcodeLayout);
if (!readInstructionOperandSize(sourceLine, &instructionRepresentation->opcode))
{
return False;
}
if (!setComb(sourceLine, &instructionRepresentation->opcode))
{
return False;
}
if (*sourceLine->text != OPCODE_TYPE_AND_DBL_SEPERATOR)
{
setSourceLineError(sourceLine, "Missing '%c' character between operand type and dbl.", OPCODE_TYPE_AND_DBL_SEPERATOR);
return False;
}
sourceLine->text += OPCODE_TYPE_AND_DBL_SEPERATOR_LENGTH;
if (!readInstructionRepetition(sourceLine, &instructionRepresentation->opcode))
{
return False;
}
return True;
}
Boolean hasSpaceBetweenOpcodeAndOperands(SourceLinePtr sourceLine)
{
return isspace(*sourceLine->text);
}
void readNoOperandOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
if (!readInstructionModifiers(sourceLine, instructionRepresentation))
{
return;
}
/* if the ocode is the last opcode in the file it will have no new line mark */
skipWhitespace(sourceLine);
if (*sourceLine->text != EOL)
{
setSourceLineError(sourceLine, "This opcode should have no operands.");
}
#ifdef DEBUG
else
{
printf("Opcode with no operands.\n");
}
#endif
}
void readUnaryOperandOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation, ValidOperandAddressing validAddressing)
{
if (!readInstructionModifiers(sourceLine, instructionRepresentation))
{
return;
}
if (!hasSpaceBetweenOpcodeAndOperands(sourceLine))
{
setSourceLineError(sourceLine, "Missing space between opcode and operand.");
return;
}
skipWhitespace(sourceLine);
if (*sourceLine->text == EOL)
{
setSourceLineError(sourceLine, "Missing operand.");
return;
}
readDestinationOperand(sourceLine, validAddressing, instructionRepresentation);
}
void readBinaryOperandOpcode(SourceLinePtr sourceLine,
InstructionLayoutPtr instructionRepresentation,
ValidOperandAddressing validSourceAddressing,
ValidOperandAddressing validDestinationAddressing)
{
if (!readInstructionModifiers(sourceLine, instructionRepresentation))
{
return;
}
if (!hasSpaceBetweenOpcodeAndOperands(sourceLine))
{
setSourceLineError(sourceLine, "Missing space between opcode and operand.");
return;
}
skipWhitespace(sourceLine);
readSourceOperand(sourceLine, validSourceAddressing, instructionRepresentation);
if (sourceLine->error != NULL) return;
skipWhitespace(sourceLine);
if (*sourceLine->text != OPERAND_SEPERATOR)
{
setSourceLineError(sourceLine, "Missing second operand.");
return;
}
sourceLine->text += OPERAND_SEPERATOR_LENGTH;
skipWhitespace(sourceLine);
readDestinationOperand(sourceLine, validDestinationAddressing, instructionRepresentation);
}
void fillMovOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_mov;
readBinaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_All, ValidOperandAddressing_AllExceptInstant);
}
void fillCmpOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_cmp;
readBinaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_All, ValidOperandAddressing_All);
}
void fillAddOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
ValidOperandAddressing validAddressing = ValidOperandAddressing_AllExceptInstant;
instructionRepresentation->opcode.opcode = Opcode_add;
readBinaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_All, validAddressing);
}
void fillSubOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
ValidOperandAddressing validAddressing = ValidOperandAddressing_AllExceptInstant;
instructionRepresentation->opcode.opcode = Opcode_sub;
readBinaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_All, validAddressing);
}
void fillNotOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_not;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_AllExceptInstant);
}
void fillClrOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_clr;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_AllExceptInstant);
}
void fillLeaOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
ValidOperandAddressing validAddressing = ValidOperandAddressing_AllExceptInstant;
instructionRepresentation->opcode.opcode = Opcode_lea;
readBinaryOperandOpcode(sourceLine, instructionRepresentation, validAddressing, validAddressing);
}
void fillIncOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_inc;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_AllExceptInstant);
}
void fillDecOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_dec;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_AllExceptInstant);
}
void fillJmpOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_jmp;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_AllExceptInstant);
}
void fillBneOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_bne;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_AllExceptInstant);
}
void fillRedOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_red;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_AllExceptInstant);
}
void fillPrnOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_prn;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_All);
}
void fillJsrOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_jsr;
readUnaryOperandOpcode(sourceLine, instructionRepresentation, ValidOperandAddressing_Direct);
}
void fillRtsOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_rts;
readNoOperandOpcode(sourceLine, instructionRepresentation);
}
void fillStopOpcode(SourceLinePtr sourceLine, InstructionLayoutPtr instructionRepresentation)
{
instructionRepresentation->opcode.opcode = Opcode_stop;
readNoOperandOpcode(sourceLine, instructionRepresentation);
}