def hex_to_arm(hex_str): instr = int(hex_str, 16) cond = (instr >> 28) & 0xF if cond != 0xE: # 0xE = always return f"<conditional hex(instr)>" opcode = (instr >> 21) & 0xF rd = (instr >> 12) & 0xF rn = (instr >> 16) & 0xF
if ((instr & 0xFC000000) == 0xE3A00000) // MOV immediate int rd = (instr >> 12) & 0xF; int imm = instr & 0xFF; printf("MOV R%d, #%d\n", rd, imm); hex to arm converter
# Check if immediate (bit 25 = 1) if (instr >> 25) & 1: imm = instr & 0xFF shift = (instr >> 8) & 0xF if shift: imm = imm << (shift * 2) ops = 0: "AND", 1: "EOR", 2: "SUB", 3: "RSB", 4: "ADD", 8: "TST", 10: "CMP", 12: "ORR", 13: "MOV", 14: "BIC", 15: "MVN" return f"ops.get(opcode, '???') Rrd, #imm" else: # Register operand (simplified) rm = instr & 0xF ops = 0: "AND", 1: "EOR", 2: "SUB", 3: "RSB", 4: "ADD", 8: "TST", 10: "CMP", 12: "ORR", 13: "MOV" return f"ops.get(opcode, '???') Rrd, Rrn, Rrm" print(hex_to_arm("E3A00005")) # MOV R0, #5 def hex_to_arm(hex_str): instr = int(hex_str, 16) cond =