From 4ccfe27e4ad9d31ebe67e219f3cdd48f6ae6f699 Mon Sep 17 00:00:00 2001 From: Bryan Bishop Date: Thu, 7 Jun 2012 01:24:38 -0500 Subject: [PATCH] more awful code for the new disassembler --- extras/romstr.py | 189 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 187 insertions(+), 2 deletions(-) diff --git a/extras/romstr.py b/extras/romstr.py index d923594d8..a121d9c1b 100644 --- a/extras/romstr.py +++ b/extras/romstr.py @@ -169,8 +169,193 @@ class Asm: maybe_byte = current_byte - # stuff... - raise NotImplementedError, "o_______o" + # check if this byte has a label prior to it + # and if not, generate a new label + # This new label might not be used, so it will be + # removed if the total usage is zero. + if offset in byte_labels.keys(): + line_label = byte_labels[offset]["name"] + byte_labels[offset]["usage"] += 1 + else: + line_label = asm_label(offset) + byte_labels[offset] = {} + byte_labels[offset]["name"] = line_label + byte_labels[offset]["usage"] = 0 + byte_labels[offset]["definition"] = True + output += .. add label here (well, not really) + + #find out if there's a two byte key like this + temp_maybe = maybe_byte + temp_maybe += ( ord(rom[offset+1]) << 8) + if temp_maybe in opt_table.keys() and ord(rom[offset+1])!=0: + opstr = opt_table[temp_maybe][0].lower() + + if "x" in opstr: + for x in range(0, opstr.count("x")): + insertion = ord(rom[offset + 1]) + insertion = "$" + hex(insertion)[2:] + + opstr = opstr[:opstr.find("x")].lower() + insertion + opstr[opstr.find("x")+1:].lower() + + current_byte += 1 + offset += 1 + + if "?" in opstr: + for y in range(0, opstr.count("?")): + byte1 = ord(rom[offset + 1]) + byte2 = ord(rom[offset + 2]) + + number = byte1 + number += byte2 << 8; + + insertion = "$%.4x" % (number) + + opstr = opstr[:opstr.find("?")].lower() + insertion + opstr[opstr.find("?")+1:].lower() + + current_byte_number += 2 + offset += 2 + + output += spacing + opstr #+ " ; " + hex(offset) + output += "\n" + + current_byte_number += 2 + offset += 2 + elif maybe_byte in opt_table.keys(): + op_code = opt_table[maybe_byte] + op_code_type = op_code[1] + op_code_byte = maybe_byte + + #type = -1 when it's the E op + #if op_code_type != -1: + if op_code_type == 0 and ord(rom[offset]) == op_code_byte: + op_str = op_code[0].lower() + + output += spacing + op_code[0].lower() #+ " ; " + hex(offset) + output += "\n" + + offset += 1 + current_byte_number += 1 + elif op_code_type == 1 and ord(rom[offset]) == op_code_byte: + oplen = len(op_code[0]) + opstr = copy(op_code[0]) + xes = op_code[0].count("x") + include_comment = False + for x in range(0, xes): + insertion = ord(rom[offset + 1]) + insertion = "$" + hex(insertion)[2:] + + if current_byte == 0x18 or current_byte==0x20 or current_byte in relative_jumps: #jr or jr nz + #generate a label for the byte we're jumping to + target_address = offset + 2 + c_int8(ord(rom[offset + 1])).value + if target_address in byte_labels.keys(): + byte_labels[target_address]["usage"] = 1 + byte_labels[target_address]["usage"] + line_label2 = byte_labels[target_address]["name"] + else: + line_label2 = asm_label(target_address) + byte_labels[target_address] = {} + byte_labels[target_address]["name"] = line_label2 + byte_labels[target_address]["usage"] = 1 + byte_labels[target_address]["definition"] = False + + insertion = line_label2.lower() + include_comment = True + elif current_byte == 0x3e: + last_a_address = ord(rom[offset + 1]) + + opstr = opstr[:opstr.find("x")].lower() + insertion + opstr[opstr.find("x")+1:].lower() + output += spacing + opstr + if include_comment: + output += " ; " + hex(offset) + if current_byte in relative_jumps: + output += " $" + hex(ord(rom[offset + 1]))[2:] + output += "\n" + + current_byte_number += 1 + offset += 1 + insertion = "" + + current_byte_number += 1 + offset += 1 + include_comment = False + + elif op_code_type == 2 and ord(rom[offset]) == op_code_byte: + oplen = len(op_code[0]) + opstr = copy(op_code[0]) + qes = op_code[0].count("?") + for x in range(0, qes): + byte1 = ord(rom[offset + 1]) + byte2 = ord(rom[offset + 2]) + + number = byte1 + number += byte2 << 8; + + insertion = "$%.4x" % (number) + if maybe_byte in call_commands or current_byte in relative_unconditional_jumps or current_byte in relative_jumps: + result = find_label(insertion, bank_id) + if result != None: + insertion = result + + opstr = opstr[:opstr.find("?")].lower() + insertion + opstr[opstr.find("?")+1:].lower() + output += spacing + opstr #+ " ; " + hex(offset) + output += "\n" + + current_byte_number += 2 + offset += 2 + + current_byte_number += 1 + offset += 1 + + if current_byte == 0x21: + last_hl_address = byte1 + (byte2 << 8) + if current_byte == 0xcd: + if number == 0x3d97: used_3d97 = True + #duck out if this is jp $24d7 + if current_byte == 0xc3 or current_byte in relative_unconditional_jumps: + if current_byte == 0xc3: + if number == 0x3d97: used_3d97 = True + #if number == 0x24d7: #jp + if not has_outstanding_labels(byte_labels) or all_outstanding_labels_are_reverse(byte_labels, offset): + keep_reading = False + is_data = False + break + else: + is_data = True + + #stop reading at a jump, relative jump or return + if current_byte in end_08_scripts_with: + if not has_outstanding_labels(byte_labels) and all_outstanding_labels_are_reverse(byte_labels, offset): + keep_reading = False + is_data = False #cleanup + break + else: + is_data = False + keep_reading = True + else: + is_data = False + keep_reading = True + else: + #if is_data and keep_reading: + output += spacing + "db $" + hex(ord(rom[offset]))[2:] #+ " ; " + hex(offset) + output += "\n" + offset += 1 + current_byte_number += 1 + #else the while loop would have spit out the opcode + + #these two are done prior + #offset += 1 + #current_byte_number += 1 + + #clean up unused labels + for label_line in byte_labels.keys(): + address = label_line + label_line = byte_labels[label_line] + if label_line["usage"] == 0: + output = output.replace((label_line["name"] + "\n").lower(), "") + + #add the offset of the final location + output += "; " + hex(offset) + + return (output, offset, last_hl_address, last_a_address, used_3d97) def __str__(self): """ ASM pretty printer.