diff --git a/src/parser.c b/src/parser.c
index 0cdccb5..c5bc66f 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -178,8 +178,6 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
             instr->type = a64inst_DPIMMEDIATE;
             a64inst_DPImmediateData data = instr->data.DPImmediateData;
             char t = operandList[0][0];
-            int reg = getOperandNumber(operandList[0]);
-            data.dest=reg;
             if (t == 'w') {
                 data.regType=0;
             }
@@ -190,6 +188,7 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
             // add, adds
             if (opcode[1] == 'd') {
                 data.DPIOpType = 0;
+                data.dest = getOperandNumber(operandList[0]);
                 data.processOpData.arithmData.src = getOperandNumber(operandList[1]);
                 data.processOpData.arithmData.immediate = getOperandNumber(operandList[2]);
                 if (opcode[-1] == 's') {
@@ -204,7 +203,8 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
             // cmn
             else if (opcode == "cmn") {
                 data.DPIOpType = 0;
-                data.processOpData.arithmData.src = ZERO_REGISTER;
+                data.dest = ZERO_REGISTER;
+                data.processOpData.arithmData.src = getOperandNumber(operandList[0]);
                 data.processOpData.arithmData.immediate = getOperandNumber(operandList[1]);
                 data.processOpData.arithmData.shiftImmediate = true;
                 data.processOp = 1;
@@ -212,6 +212,7 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
             // sub, subs
             else if (opcode[0] == 's') {
                 data.DPIOpType = 0;
+                data.dest = getOperandNumber(operandList[0]);
                 data.processOpData.arithmData.src = getOperandNumber(operandList[1]);
                 data.processOpData.arithmData.immediate = getOperandNumber(operandList[2]);
                 if (opcode[-1] == 's') {
@@ -226,11 +227,27 @@ void classifyOpcode(char* opcode, a64inst_instruction *instr, char *operandList[
             // cmp
             else if (opcode == 'cmp') {
                 data.DPIOpType = 0;
-                data.processOpData.arithmData.src = ZERO_REGISTER;
+                data.dest = ZERO_REGISTER;
+                data.processOpData.arithmData.src = getOperandNumber(operandList[0]);
                 data.processOpData.arithmData.immediate = getOperandNumber(operandList[1]);
                 data.processOpData.arithmData.shiftImmediate = true;
                 data.processOp = 3;
             }
+            // neg, negs
+            else if (opcode[0] == 'n') {
+                data.DPIOpType = 0;
+                data.dest = getOperandNumber(operandList[1]);
+                data.processOpData.arithmData.src = ZERO_REGISTER;
+                data.processOpData.arithmData.immediate = getOperandNumber(operandList[2]);
+                if (opcode[-1] == 's') {
+                    data.processOpData.arithmData.shiftImmediate = true;
+                    data.processOp = 3;
+                }
+                else {
+                    data.processOpData.arithmData.shiftImmediate = false;
+                    data.processOp = 2;
+                }
+            }
             // wide move
         }