#!/usr/bin/env python3 import struct, sys item_ids = { 0x00 : "ITEM_STICK", 0x01 : "ITEM_NUT", 0x02 : "ITEM_BOMB", 0x03 : "ITEM_BOW", 0x04 : "ITEM_ARROW_FIRE", 0x05 : "ITEM_DINS_FIRE", 0x06 : "ITEM_SLINGSHOT", 0x07 : "ITEM_OCARINA_FAIRY", 0x08 : "ITEM_OCARINA_TIME", 0x09 : "ITEM_BOMBCHU", 0x0A : "ITEM_HOOKSHOT", 0x0B : "ITEM_LONGSHOT", 0x0C : "ITEM_ARROW_ICE", 0x0D : "ITEM_FARORES_WIND", 0x0E : "ITEM_BOOMERANG", 0x0F : "ITEM_LENS", 0x10 : "ITEM_BEAN", 0x11 : "ITEM_HAMMER", 0x12 : "ITEM_ARROW_LIGHT", 0x13 : "ITEM_NAYRUS_LOVE", 0x14 : "ITEM_BOTTLE", 0x15 : "ITEM_POTION_RED", 0x16 : "ITEM_POTION_GREEN", 0x17 : "ITEM_POTION_BLUE", 0x18 : "ITEM_FAIRY", 0x19 : "ITEM_FISH", 0x1A : "ITEM_MILK_BOTTLE", 0x1B : "ITEM_LETTER_RUTO", 0x1C : "ITEM_BLUE_FIRE", 0x1D : "ITEM_BUG", 0x1E : "ITEM_BIG_POE", 0x1F : "ITEM_MILK_HALF", 0x20 : "ITEM_POE", 0x21 : "ITEM_WEIRD_EGG", 0x22 : "ITEM_CHICKEN", 0x23 : "ITEM_LETTER_ZELDA", 0x24 : "ITEM_MASK_KEATON", 0x25 : "ITEM_MASK_SKULL", 0x26 : "ITEM_MASK_SPOOKY", 0x27 : "ITEM_MASK_BUNNY", 0x28 : "ITEM_MASK_GORON", 0x29 : "ITEM_MASK_ZORA", 0x2A : "ITEM_MASK_GERUDO", 0x2B : "ITEM_MASK_TRUTH", 0x2C : "ITEM_SOLD_OUT", 0x2D : "ITEM_POCKET_EGG", 0x2E : "ITEM_POCKET_CUCCO", 0x2F : "ITEM_COJIRO", 0x30 : "ITEM_ODD_MUSHROOM", 0x31 : "ITEM_ODD_POTION", 0x32 : "ITEM_SAW", 0x33 : "ITEM_SWORD_BROKEN", 0x34 : "ITEM_PRESCRIPTION", 0x35 : "ITEM_FROG", 0x36 : "ITEM_EYEDROPS", 0x37 : "ITEM_CLAIM_CHECK", 0x38 : "ITEM_BOW_ARROW_FIRE", 0x39 : "ITEM_BOW_ARROW_ICE", 0x3A : "ITEM_BOW_ARROW_LIGHT", 0x3B : "ITEM_SWORD_KOKIRI", 0x3C : "ITEM_SWORD_MASTER", 0x3D : "ITEM_SWORD_BGS", 0x3E : "ITEM_SHIELD_DEKU", 0x3F : "ITEM_SHIELD_HYLIAN", 0x40 : "ITEM_SHIELD_MIRROR", 0x41 : "ITEM_TUNIC_KOKIRI", 0x42 : "ITEM_TUNIC_GORON", 0x43 : "ITEM_TUNIC_ZORA", 0x44 : "ITEM_BOOTS_KOKIRI", 0x45 : "ITEM_BOOTS_IRON", 0x46 : "ITEM_BOOTS_HOVER", 0x47 : "ITEM_BULLET_BAG_30", 0x48 : "ITEM_BULLET_BAG_40", 0x49 : "ITEM_BULLET_BAG_50", 0x4A : "ITEM_QUIVER_30", 0x4B : "ITEM_QUIVER_40", 0x4C : "ITEM_QUIVER_50", 0x4D : "ITEM_BOMB_BAG_20", 0x4E : "ITEM_BOMB_BAG_30", 0x4F : "ITEM_BOMB_BAG_40", 0x50 : "ITEM_BRACELET", 0x51 : "ITEM_GAUNTLETS_SILVER", 0x52 : "ITEM_GAUNTLETS_GOLD", 0x53 : "ITEM_SCALE_SILVER", 0x54 : "ITEM_SCALE_GOLDEN", 0x55 : "ITEM_SWORD_KNIFE", 0x56 : "ITEM_WALLET_ADULT", 0x57 : "ITEM_WALLET_GIANT", 0x58 : "ITEM_SEEDS", 0x59 : "ITEM_FISHING_POLE", 0x5A : "ITEM_SONG_MINUET", 0x5B : "ITEM_SONG_BOLERO", 0x5C : "ITEM_SONG_SERENADE", 0x5D : "ITEM_SONG_REQUIEM", 0x5E : "ITEM_SONG_NOCTURNE", 0x5F : "ITEM_SONG_PRELUDE", 0x60 : "ITEM_SONG_LULLABY", 0x61 : "ITEM_SONG_EPONA", 0x62 : "ITEM_SONG_SARIA", 0x63 : "ITEM_SONG_SUN", 0x64 : "ITEM_SONG_TIME", 0x65 : "ITEM_SONG_STORMS", 0x66 : "ITEM_MEDALLION_FOREST", 0x67 : "ITEM_MEDALLION_FIRE", 0x68 : "ITEM_MEDALLION_WATER", 0x69 : "ITEM_MEDALLION_SPIRIT", 0x6A : "ITEM_MEDALLION_SHADOW", 0x6B : "ITEM_MEDALLION_LIGHT", 0x6C : "ITEM_KOKIRI_EMERALD", 0x6D : "ITEM_GORON_RUBY", 0x6E : "ITEM_ZORA_SAPPHIRE", 0x6F : "ITEM_STONE_OF_AGONY", 0x70 : "ITEM_GERUDO_CARD", 0x71 : "ITEM_SKULL_TOKEN", 0x72 : "ITEM_HEART_CONTAINER", 0x73 : "ITEM_HEART_PIECE", 0x74 : "ITEM_KEY_BOSS", 0x75 : "ITEM_COMPASS", 0x76 : "ITEM_DUNGEON_MAP", 0x77 : "ITEM_KEY_SMALL", 0x78 : "ITEM_MAGIC_SMALL", 0x79 : "ITEM_MAGIC_LARGE", 0x7A : "ITEM_HEART_PIECE_2", 0x7B : "ITEM_INVALID_1", 0x7C : "ITEM_INVALID_2", 0x7D : "ITEM_INVALID_3", 0x7E : "ITEM_INVALID_4", 0x7F : "ITEM_INVALID_5", 0x80 : "ITEM_INVALID_6", 0x81 : "ITEM_INVALID_7", 0x82 : "ITEM_MILK", 0x83 : "ITEM_HEART", 0x84 : "ITEM_RUPEE_GREEN", 0x85 : "ITEM_RUPEE_BLUE", 0x86 : "ITEM_RUPEE_RED", 0x87 : "ITEM_RUPEE_PURPLE", 0x88 : "ITEM_RUPEE_GOLD", 0x89 : "ITEM_INVALID_8", 0x8A : "ITEM_STICKS_5", 0x8B : "ITEM_STICKS_10", 0x8C : "ITEM_NUTS_5", 0x8D : "ITEM_NUTS_10", 0x8E : "ITEM_BOMBS_5", 0x8F : "ITEM_BOMBS_10", 0x90 : "ITEM_BOMBS_20", 0x91 : "ITEM_BOMBS_30", 0x92 : "ITEM_ARROWS_SMALL", 0x93 : "ITEM_ARROWS_MEDIUM", 0x94 : "ITEM_ARROWS_LARGE", 0x95 : "ITEM_SEEDS_30", 0x96 : "ITEM_BOMBCHUS_5", 0x97 : "ITEM_BOMBCHUS_20", 0x98 : "ITEM_STICK_UPGRADE_20", 0x99 : "ITEM_STICK_UPGRADE_30", 0x9A : "ITEM_NUT_UPGRADE_30", 0x9B : "ITEM_NUT_UPGRADE_40", 0xFC : "ITEM_LAST_USED", 0xFE : "ITEM_NONE_FE", 0xFF : "ITEM_NONE", } def disas_elfmsgs(start): baserom = None with open("baserom.z64", "rb") as infile: baserom = bytearray(infile.read()) branches = [] pos = start while (True): print(f"/* {pos - start:04X} {((pos - start) // 4):3} */ ", end="") b0, b1, b2, b3 = struct.unpack(">BBBB", baserom[pos:pos+4]) elf_message_types = { 0x00: "CHECK", 0x20: "UNK_1", 0x40: "UNK_2", 0x60: "SKIP", 0xE0: "END", } cont = True branch_to = None # Get Type elf_message_type = b0 & 0xE0 ARG_0 = elf_message_types[elf_message_type] if elf_message_type in [0, 0x20, 0x40, 0xE0]: if elf_message_type == 0xE0: cont = False ARG_1 = f"0x{(b2 & 0xFF):04X}" elif elf_message_type == 0x60: branch_to = 4 * (b2 & 0xFF) ARG_1 = (b2 & 0xFF) else: assert False , "Encountered unknown type" ARG_2 = f"{bool(b0 & 1)}".lower() # Get condition condition_type = b0 & 0x1E if condition_type == 0: if elf_message_type == 0xE0 and b1 == 0 and not (b0 & 1): print(f"ELF_MSG_END({ARG_1}),") else: print(f"ELF_MSG_FLAG({ARG_0}, {ARG_1}, {ARG_2}, 0x{b1:02X}), /* eventChkInf[{(b1 >> 4) & 0xF}] & 0x{1 << (b1 & 0xF):X} */") assert b3 == 0 elif condition_type == 2: print(f"ELF_MSG_DUNGEON_ITEM({ARG_0}, {ARG_1}, {ARG_2}, {item_ids[b1]}),") assert b3 == 0 elif condition_type == 4: print(f"ELF_MSG_ITEM({ARG_0}, {ARG_1}, {ARG_2}, {item_ids[b1]}, {item_ids[b3]}),") elif condition_type == 6: condition_other_type = b1 & 0xF0 if condition_other_type == 0: print(f"ELF_MSG_STRENGTH_UPG({ARG_0}, {ARG_1}, {ARG_2}, {b1 & 0xF}),") assert b3 == 0 elif condition_other_type == 0x10: print(f"ELF_MSG_BOOTS({ARG_0}, {ARG_1}, {ARG_2}, {item_ids[b3]}),") assert (b1 & 0xF) == 0 elif condition_other_type == 0x20: print(f"ELF_MSG_SONG({ARG_0}, {ARG_1}, {ARG_2}, {item_ids[b3]}),") assert (b1 & 0xF) == 0 elif condition_other_type == 0x30: print(f"ELF_MSG_MEDALLION({ARG_0}, {ARG_1}, {ARG_2}, {item_ids[b3]}),") assert (b1 & 0xF) == 0 elif condition_other_type == 0x40: print(f"ELF_MSG_MAGIC({ARG_0}, {ARG_1}, {ARG_2}),") assert (b1 & 0xF) == 0 assert b3 == 0 else: assert False , "Encountered unknown condition (other) type" else: assert False , "Encountered unknown condition type" # Control flow if branch_to is not None: branches.append(branch_to) pos += 4 if not cont: print("") if not cont and all([dst < pos - start for dst in branches]): break disas_elfmsgs(int(sys.argv[1],16))