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DPR logic

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GDBWNV 2024-06-12 18:28:49 +01:00
parent b8f3ded0af
commit 51283891bd
1 changed files with 141 additions and 5 deletions
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146
src/parser.c
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@ -182,13 +182,14 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
else {
data.regType=1;
}
data.dest = getOperandNumber(operandList[0]);
data.src1 = getOperandNumber(operandList[1]);
data.src2 = getOperandNumber(operandList[2]);
// multiply
// mul, mneg, madd, msub
if (opcode[0] == 'm') {
data.DPROpType = 1;
data.dest = getOperandNumber(operandList[0]);
data.src1 = getOperandNumber(operandList[1]);
data.src2 = getOperandNumber(operandList[2]);
switch (opcode[1]) {
// madd
case 'a':
@ -214,9 +215,144 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
}
// arithmlogic
else {
data.DPROpType = 0;
data.processOpData.arithmLogicData.negShiftedSrc2 = 0;
// logical
data.processOpData.arithmLogicData.type = 0;
// three special cases
if (opcode == 'tst') {
data.dest = ZERO_REGISTER;
data.src1 = getOperandNumber(operandList[0]);
data.src2 = getOperandNumber(operandList[1]);
data.processOp = 3;
if (strlen(operandList) == 3) {
char *split[] = strtok(operandList[2], ' ');
switch (split[1][0]) {
case 'L':
// LSR
if (split[1][2] == 'R') {
data.processOpData.arithmLogicData.shiftType = 1;
}
// LSL
else {
data.processOpData.arithmLogicData.shiftType = 0;
}
break;
// ROR
case 'R':
data.processOpData.arithmLogicData.shiftType = 3;
break;
// ASR
default:
data.processOpData.arithmLogicData.shiftType = 2;
break;
}
}
}
else if (opcode == 'mvn') {
data.dest = getOperandNumber(operandList[0]);
data.src1 = ZERO_REGISTER;
data.src2 = getOperandNumber(operandList[1]);
data.processOp = 1;
data.processOpData.arithmLogicData.negShiftedSrc2 = 1;
if (strlen(operandList) == 3) {
char *split[] = strtok(operandList[2], ' ');
switch (split[1][0]) {
case 'L':
// LSR
if (split[1][2] == 'R') {
data.processOpData.arithmLogicData.shiftType = 1;
}
// LSL
else {
data.processOpData.arithmLogicData.shiftType = 0;
}
break;
// ROR
case 'R':
data.processOpData.arithmLogicData.shiftType = 3;
break;
// ASR
default:
data.processOpData.arithmLogicData.shiftType = 2;
break;
}
}
}
else if (opcode == 'mov') {
data.dest = getOperandNumber(operandList[0]);
data.src1 = ZERO_REGISTER;
data.src2 = getOperandNumber(operandList[1]);
data.processOp = 1;
}
else {
// handles shifts
if (strlen(operandList) == 4) {
char *split[] = strtok(operandList[3], ' ');
switch (split[1][0]) {
case 'L':
// LSR
if (split[1][2] == 'R') {
data.processOpData.arithmLogicData.shiftType = 1;
}
// LSL
else {
data.processOpData.arithmLogicData.shiftType = 0;
}
break;
// ROR
case 'R':
data.processOpData.arithmLogicData.shiftType = 3;
break;
// ASR
default:
data.processOpData.arithmLogicData.shiftType = 2;
break;
}
}
switch (opcode[0]) {
// and, ands
case 'a':
// ands
if (strlen(opcode) == 4) {
data.processOp = 3;
}
// and
else {
data.processOp = 0;
}
break;
// bic, bics
case 'b':
data.processOpData.arithmLogicData.negShiftedSrc2 = 1;
// bics
if (strlen(opcode) == 4) {
data.processOp = 3;
}
// bic
else {
data.processOp = 0;
}
break;
// orr, orn
case 'o':
data.processOp = 1;
// orn
if (opcode[2] == 'n') {
data.processOpData.arithmLogicData.negShiftedSrc2 = 1;
}
break;
// eor, eon
default:
data.processOp = 2;
// eon
if (opcode[2] == 'n') {
data.processOpData.arithmLogicData.negShiftedSrc2 = 1;
}
break;
}
}
}
} else {
instr->type = a64inst_DPIMMEDIATE;
a64inst_DPImmediateData data = instr->data.DPImmediateData;