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classify opcode load/store

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This commit is contained in:
EDiasAlberto 2024-06-05 19:52:50 +01:00
parent a8a1fd52a9
commit 129bdf3954
1 changed files with 15 additions and 4 deletions
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19
src/parser.c
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@ -27,9 +27,21 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
instr->data.BranchData.BranchType = a64inst_CONDITIONAL; instr->data.BranchData.BranchType = a64inst_CONDITIONAL;
//instr->data.branchData.processOpData.cond = {remove first two chars of opcode} //instr->data.branchData.processOpData.cond = {remove first two chars of opcode}
} }
} else if(strcmp(opcode, "ldr") == 0 || strcmp(opcode, "str") == 0){ } else if((int isLoad = strcmp(opcode, "ldr")) == 0 || (int isStore = strcmp(opcode, "str")) == 0){
//loading/storing instruction; classify operands //loading/storing instruction; classify operands
char *address = opcode[1]; char *address = operandList[1];
if( *address == '['){
//type is register
instr->type = a64inst_SINGLETRANSFER;
if(isLoad == 0){
instr->data.processOpData.singleDataTransferData.transferType = a64inst_LOAD;
} else {
instr->data.processOpData.singleDataTransferData.transferType = a64inst_STORE;
}
} else {
instr->type = a64inst_LOADLITERAL;
//instr->data.processOpData.offset = {} to be defined by symbol table
}
} else { } else {
//data processing //data processing
@ -39,7 +51,6 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
char *tokeniseOperands(char* str, int operandCount, char *operands[]){ char *tokeniseOperands(char* str, int operandCount, char *operands[]){
char *operandsDupe = strdup(str); char *operandsDupe = strdup(str);
int operandCount = 0;
char *operand = strtok(operandsDupe, OPERAND_DELIMITER); char *operand = strtok(operandsDupe, OPERAND_DELIMITER);
operands[0] = operand; operands[0] = operand;
@ -71,7 +82,7 @@ a64inst_instruction *parser(char asmLine[]){
if(strcmp(opcode, ".int") == 0){ if(strcmp(opcode, ".int") == 0){
//type is directive //type is directive
//define new type in a64instr struct
} else if(strcmp(opcode[strlen(opcode)-1], ":") == 0) { } else if(strcmp(opcode[strlen(opcode)-1], ":") == 0) {
//type is label //type is label
//add to symbol table //add to symbol table