mirror of
https://github.com/zeldaret/oot.git
synced 2024-11-25 09:45:02 +00:00
dbbeb656f8
* [Audio 8/?] Check-in handwritten sequences, build sequences, automate various sfx arrays * Fix whitespace in aseq.h * Fix sequence 0 sfx id generator * Suggested changes, adjust some MML syntax and add more instruction descriptions * Correct some formatting in aseq.h * Add the dir of the input .seq file to the list of includes to sequence assembling so that assembler-level includes like .include or .incbin work intuitively * aseq.h tweaks * MM review suggestions, aseq.h adjustments
1296 lines
50 KiB
Python
1296 lines
50 KiB
Python
#!/usr/bin/env python3
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# SPDX-FileCopyrightText: © 2024 ZeldaRET
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# SPDX-License-Identifier: CC0-1.0
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#
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# Audio Sequence Disassembler
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#
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"""
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The approach for sequence disassembly is roughly as follows:
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```
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Set COVERAGE=[0 for _ in range(len(data))]
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Set REF_QUEUE=[]
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Set OFFSET=0
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Set SECTION=SEQ
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1:
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Begin sequential disassembly at OFFSET using section type SECTION
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Collect reference labels and section types into REF_QUEUE
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Update entries in COVERAGE to 1 as bytes are read
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End disassembly at `end` instruction
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If REF_QUEUE is not empty:
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Pop a reference from REF_QUEUE
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Set OFFSET=loc(reference)
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Set SECTION=section(reference)
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goto 1
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If Any 0s in COVERAGE:
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Set OFFSET=(index of first 0 in COVERAGE)
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Set SECTION=guess_section(OFFSET) (make a heuristic guess for section based on neighbors)
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goto 1
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```
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There are some additional subtleties for handling padding and uncommon sections like `array`.
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For tables used in `dyncall`s, we have to rely on external information to provide the location and size of tables as
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there is no reliable heuristic for identifying table sizes.
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TODO
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sequence beginning with testchan 0 is a buffer (?)
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OR any ldseq is an array and an array of 0 is a buffer (?)
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detect section overlaps and mark them as bugged in the output
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"""
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from dataclasses import dataclass
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from enum import Enum, auto
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from typing import Callable, Dict, List, Optional, Tuple
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from .audiobank_file import AudiobankFile
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pitch_names = (
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"A0", "BF0", "B0", "C1", "DF1", "D1", "EF1", "E1", "F1", "GF1", "G1", "AF1", "A1", "BF1", "B1", "C2",
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"DF2", "D2", "EF2", "E2", "F2", "GF2", "G2", "AF2", "A2", "BF2", "B2", "C3", "DF3", "D3", "EF3", "E3",
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"F3", "GF3", "G3", "AF3", "A3", "BF3", "B3", "C4", "DF4", "D4", "EF4", "E4", "F4", "GF4", "G4", "AF4",
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"A4", "BF4", "B4", "C5", "DF5", "D5", "EF5", "E5", "F5", "GF5", "G5", "AF5", "A5", "BF5", "B5", "C6",
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"DF6", "D6", "EF6", "E6", "F6", "GF6", "G6", "AF6", "A6", "BF6", "B6", "C7", "DF7", "D7", "EF7", "E7",
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"F7", "GF7", "G7", "AF7", "A7", "BF7", "B7", "C8", "DF8", "D8", "EF8", "E8", "F8", "GF8", "G8", "AF8",
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"A8", "BF8", "B8", "C9", "DF9", "D9", "EF9", "E9", "F9", "GF9", "G9", "AF9", "A9", "BF9", "B9", "C10",
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"DF10", "D10", "EF10", "E10", "F10", "BFNEG1", "BNEG1", "C0", "DF0", "D0", "EF0", "E0", "F0", "GF0", "G0", "AF0",
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)
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#
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# VERSIONS
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#
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class MMLVersion(Enum):
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OOT = auto()
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MM = auto()
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VERSION_ALL = (MMLVersion.OOT, MMLVersion.MM)
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#
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# SECTIONS
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#
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class SqSection(Enum):
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SEQ = ("SEQ", ".sequence")
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CHAN = ("CHAN", ".channel")
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LAYER = ("LAYER", ".layer")
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ARRAY = ("ARRAY", ".array")
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TABLE = ("TABLE", ".table")
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ENVELOPE = ("ENVELOPE", ".envelope")
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FILTER = ("FILTER", ".filter")
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UNKNOWN = ("UNK", "")
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def __init__(self, prefix, lbl_prefix):
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self.prefix = prefix
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self.lbl_prefix = lbl_prefix
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SECTION_ALL = (SqSection.SEQ, SqSection.CHAN, SqSection.LAYER)
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#
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# ARGS
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#
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def maybe_hex(n):
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if n < 10:
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return f"{n}"
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else:
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return f"0x{n:X}"
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def sign_extend(x, n):
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sgn = 1 << (n - 1)
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return (x & (sgn - 1)) - (x & sgn)
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class MMLArg:
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def __init__(self, disas):
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self.value = self.read(disas)
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def read(self, disas):
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raise NotImplementedError()
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def analyze(self, disas):
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pass
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def emit(self, disas):
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return str(self.value)
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class MMLArgBits(MMLArg):
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def read(self, disas):
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return disas.bits_val
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class ArgU8(MMLArg):
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def read(self, disas):
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return disas.read_u8()
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class ArgU4x2(MMLArg):
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def read(self, disas):
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return disas.read_u8()
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def emit(self, disas):
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return f"{(self.value >> 4) & 0xF}, {self.value & 0xF}"
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class ArgSeqId(ArgU8):
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def emit(self, disas):
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return disas.all_seq_names[self.value]
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class ArgFontId(ArgU8): # TODO
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def read(self, disas):
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return disas.read_u8()
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class ArgPitchU8(ArgU8):
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def emit(self, disas):
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return f"PITCH_{pitch_names[self.value]}"
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class ArgS8(MMLArg):
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def read(self, disas):
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return sign_extend(disas.read_u8(), 8)
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class ArgU16(MMLArg):
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def read(self, disas):
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return disas.read_u16()
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class ArgS16(MMLArg):
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def read(self, disas):
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return sign_extend(disas.read_u16(), 16)
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class ArgHex8(ArgU8):
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def emit(self, disas):
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return f"0x{self.value:02X}"
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class ArgHex16(ArgU16):
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def emit(self, disas):
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return f"0x{self.value:04X}"
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class ArgBitField16(ArgU16):
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def emit(self, disas):
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return bin(self.value)
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class ArgInstr(ArgU8):
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def emit(self, disas):
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builtins = {
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126 : "FONTANY_INSTR_SFX",
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127 : "FONTANY_INSTR_DRUM",
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128 : "FONTANY_INSTR_SAWTOOTH",
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129 : "FONTANY_INSTR_TRIANGLE",
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130 : "FONTANY_INSTR_SINE",
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131 : "FONTANY_INSTR_SQUARE",
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132 : "FONTANY_INSTR_NOISE",
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133 : "FONTANY_INSTR_BELL",
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134 : "FONTANY_INSTR_8PULSE",
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135 : "FONTANY_INSTR_4PULSE",
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136 : "FONTANY_INSTR_ASM_NOISE",
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}
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if self.value in builtins:
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return builtins[self.value]
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# Check against first font only, this is fine for 99% of cases since most sequences use just one font
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font0 : AudiobankFile = disas.used_fonts[0]
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if self.value in font0.instrument_index_map:
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name = f"SF{font0.bank_num}_{font0.instrument_name(self.value)}"
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else:
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print(f"Invalid instrument sourced from {font0.name}: {self.value}")
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name = f"{self.value} /* invalid instrument */"
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return name
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class ArgVar(MMLArg):
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def read(self, disas):
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ret = disas.read_u8()
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if ret & 0x80:
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ret = ((ret << 8) & 0x7F00) | disas.read_u8()
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if ret < 128 and disas.insn_begin not in disas.force_long:
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print(f"Unnecessary use of long immediate encoding @ 0x{disas.insn_begin:X}: {ret}")
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disas.force_long.add(disas.insn_begin)
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return ret
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class ArgPortamentoMode(ArgHex8):
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def read(self, disas):
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ret = disas.read_u8()
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disas.portamento_is_special = (ret & 0x80) != 0
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return ret
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class ArgStereoConfig(ArgU8):
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def emit(self, disas):
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assert (self.value & 0b11000000) == 0
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type = (self.value >> 4) & 0b11
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strong_right = (self.value >> 3) & 1
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strong_left = (self.value >> 2) & 1
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strong_rvrb_right = (self.value >> 1) & 1
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strong_rvrb_left = (self.value >> 0) & 1
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return f"{type}, {strong_right}, {strong_left}, {strong_rvrb_right}, {strong_rvrb_left}"
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class ArgEffectsConfig(ArgU8):
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def emit(self, disas):
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assert (self.value & 0b01000000) == 0
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headset = str(bool((self.value >> 7) & 1)).upper()
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type = (self.value >> 4) & 0b11
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strong_right = (self.value >> 3) & 1
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strong_left = (self.value >> 2) & 1
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strong_rvrb_right = (self.value >> 1) & 1
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strong_rvrb_left = (self.value >> 0) & 1
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return f"{headset}, {type}, {strong_right}, {strong_left}, {strong_rvrb_right}, {strong_rvrb_left}"
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class ArgPortamentoTime(ArgVar):
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def read(self, disas):
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if disas.portamento_is_special:
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return disas.read_u8()
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else:
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return super().read(disas)
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class ArgBits3(MMLArgBits):
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NBITS = 3
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class ArgBits4(MMLArgBits):
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NBITS = 4
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class IOPort3(ArgBits3):
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def emit(self, disas):
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assert self.value in range(0,8)
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return f"IO_PORT_{self.value}"
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class IOPort8(ArgU8):
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def emit(self, disas):
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if self.value in range(0,8):
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return f"IO_PORT_{self.value}"
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else:
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return f"{self.value} # BAD IO PORT NUMBER"
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class ArgPitch(MMLArgBits):
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NBITS = 6
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def emit(self, disas):
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return f"PITCH_{pitch_names[self.value]}"
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class ArgAddr(ArgHex16):
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def analyze(self, disas):
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disas.add_ref(self.value)
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def emit(self, disas):
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value = self.value
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target_section = SqSection.UNKNOWN
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for frag in disas.fragments:
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if value in range(frag.start,frag.end):
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target_section = frag.section
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break
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addend = disas.addends.get(disas.pos, 0)
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if disas.cur_section in (SqSection.SEQ, SqSection.CHAN, SqSection.LAYER, SqSection.ENVELOPE) and addend == 0:
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# turn a label that's partway inside an instruction into a label beginning at the instruction + an addend
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for start,end in disas.insn_ranges:
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if value in range(start,end):
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addend = value - start
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value = start
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break
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prefix = target_section.prefix
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if addend != 0:
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return f"{prefix}_{value:04X} + {maybe_hex(addend)}"
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else:
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return f"{prefix}_{value:04X}"
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class ArgRelAddr8(ArgAddr):
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def read(self, disas):
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rel_offset = sign_extend(disas.read_u8(), 8)
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return disas.pos + rel_offset
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class ArgRelAddr16(ArgAddr):
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def read(self, disas):
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rel_offset = sign_extend(disas.read_u16(), 16)
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return disas.pos + rel_offset
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class ArgSectionPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, disas.cur_section)
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class ArgBigSectionPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, disas.cur_section, big=True)
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class ArgRelSectionPtr(ArgRelAddr8):
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def analyze(self, disas):
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disas.add_ref(self.value, disas.cur_section)
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class ArgSeqPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.SEQ, big=True)
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class ArgChanPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.CHAN, big=True)
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def emit(self, disas):
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return f"CHAN_{self.value:04X}"
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class ArgRelChanPtr(ArgRelAddr16):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.CHAN, big=True)
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def emit(self, disas):
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return f"CHAN_{self.value:04X}"
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class ArgLayerPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.LAYER, big=True)
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def emit(self, disas):
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return f"LAYER_{self.value:04X}"
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class ArgRelLayerPtr(ArgRelAddr16):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.LAYER, big=True)
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def emit(self, disas):
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return f"LAYER_{self.value:04X}"
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class ArgArrayPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.ARRAY, big=True)
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class ArgEnvPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.ENVELOPE, big=True)
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def emit(self, disas):
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return f"ENVELOPE_{self.value:04X}"
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class ArgFilterPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.FILTER, big=True)
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def emit(self, disas):
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return f"FILTER_{self.value:04X}"
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class ArgTblPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.TABLE, big=True)
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def emit(self, disas):
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return f"TABLE_{self.value:04X}"
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class ArgUnkPtr(ArgAddr):
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def analyze(self, disas):
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disas.add_ref(self.value, SqSection.UNKNOWN)
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class ArgLdSampleInst(MMLArg):
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def read(self, disas):
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return None
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def emit(self, disas):
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return "LDSAMPLE_INST"
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class ArgLdSampleSfx(MMLArg):
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def read(self, disas):
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return None
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def emit(self, disas):
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return "LDSAMPLE_SFX"
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#
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# COMMANDS
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#
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@dataclass
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class MMLCmd:
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cmd_id : int
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mnemonic : str
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args : Tuple[MMLArg] = ()
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is_branch : bool = False
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is_branch_unconditional : bool = False
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is_terminal : bool = False
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handler : Callable = None
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sections : Tuple[SqSection] = SECTION_ALL
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version : Tuple[MMLVersion] = VERSION_ALL
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def nesting_decr(cmd, disas):
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disas.nesting -= 1
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if disas.nesting < 0:
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disas.nesting = 0
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def nesting_incr(cmd, disas):
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disas.nesting += 1
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def set_short(cmd, disas):
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disas.large_notes = False
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def set_large(cmd, disas):
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disas.large_notes = True
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#
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# NOTE: Changes here must be reflected in aseq.h for re-assembly
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#
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CMD_SPEC = (
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#
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# Control Flow Commands
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#
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MMLCmd(0xFF, 'end', is_terminal=True, handler=nesting_decr),
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MMLCmd(0xFE, 'delay1'),
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MMLCmd(0xFD, 'delay', args=(ArgVar,), sections=(SqSection.SEQ, SqSection.CHAN,)),
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MMLCmd(0xFC, 'call', args=(ArgBigSectionPtr,)),
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MMLCmd(0xFB, 'jump', args=(ArgSectionPtr,), is_branch=True, is_branch_unconditional=True),
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MMLCmd(0xFA, 'beqz', args=(ArgSectionPtr,), is_branch=True),
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MMLCmd(0xF9, 'bltz', args=(ArgSectionPtr,), is_branch=True),
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MMLCmd(0xF8, 'loop', args=(ArgU8,), handler=nesting_incr),
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MMLCmd(0xF7, 'loopend', handler=nesting_decr),
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MMLCmd(0xF6, 'break', handler=nesting_decr),
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MMLCmd(0xF5, 'bgez', args=(ArgSectionPtr,), is_branch=True),
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MMLCmd(0xF4, 'rjump', args=(ArgRelSectionPtr,), is_branch=True, is_branch_unconditional=True),
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MMLCmd(0xF3, 'rbeqz', args=(ArgRelSectionPtr,), is_branch=True),
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MMLCmd(0xF2, 'rbltz', args=(ArgRelSectionPtr,), is_branch=True),
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#
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# SEQ commands
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#
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# non-argbits commands
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MMLCmd(0xF1, 'allocnotelist', sections=(SqSection.SEQ,), args=(ArgU8,)),
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MMLCmd(0xF0, 'freenotelist', sections=(SqSection.SEQ,)),
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MMLCmd(0xEF, 'unk_EF', sections=(SqSection.SEQ,), args=(ArgS16, ArgU8,)),
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MMLCmd(0xDF, 'transpose', sections=(SqSection.SEQ,), args=(ArgS8,)),
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MMLCmd(0xDE, 'rtranspose', sections=(SqSection.SEQ,), args=(ArgS8,)),
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MMLCmd(0xDD, 'tempo', sections=(SqSection.SEQ,), args=(ArgU8,)),
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MMLCmd(0xDC, 'tempochg', sections=(SqSection.SEQ,), args=(ArgS8,)),
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MMLCmd(0xDB, 'vol', sections=(SqSection.SEQ,), args=(ArgU8,)),
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MMLCmd(0xDA, 'volmode', sections=(SqSection.SEQ,), args=(ArgU8, ArgS16)),
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MMLCmd(0xD9, "volscale", sections=(SqSection.SEQ,), args=(ArgU8,)),
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MMLCmd(0xD7, 'initchan', sections=(SqSection.SEQ,), args=(ArgBitField16,)),
|
|
MMLCmd(0xD6, 'freechan', sections=(SqSection.SEQ,), args=(ArgBitField16,)),
|
|
MMLCmd(0xD5, 'mutescale', sections=(SqSection.SEQ,), args=(ArgS8,)),
|
|
MMLCmd(0xD4, 'mute', sections=(SqSection.SEQ,)),
|
|
MMLCmd(0xD3, 'mutebhv', sections=(SqSection.SEQ,), args=(ArgHex8,)),
|
|
MMLCmd(0xD2, 'ldshortvelarr', sections=(SqSection.SEQ,), args=(ArgArrayPtr,)), # length 16
|
|
MMLCmd(0xD1, 'ldshortgatearr', sections=(SqSection.SEQ,), args=(ArgArrayPtr,)), # length 16
|
|
MMLCmd(0xD0, 'notealloc', sections=(SqSection.SEQ,), args=(ArgU8,)),
|
|
MMLCmd(0xCE, 'rand', sections=(SqSection.SEQ,), args=(ArgU8,)),
|
|
MMLCmd(0xCD, 'dyncall', sections=(SqSection.SEQ,), args=(ArgTblPtr,)),
|
|
MMLCmd(0xCC, 'ldi', sections=(SqSection.SEQ,), args=(ArgU8,)),
|
|
MMLCmd(0xC9, 'and', sections=(SqSection.SEQ,), args=(ArgU8,)),
|
|
MMLCmd(0xC8, 'sub', sections=(SqSection.SEQ,), args=(ArgU8,)),
|
|
MMLCmd(0xC7, 'stseq', sections=(SqSection.SEQ,), args=(ArgU8, ArgAddr,)),
|
|
MMLCmd(0xC6, 'stop', sections=(SqSection.SEQ,)),
|
|
MMLCmd(0xC5, 'scriptctr', sections=(SqSection.SEQ,), args=(ArgU16,)),
|
|
MMLCmd(0xC4, 'runseq', sections=(SqSection.SEQ,), args=(ArgU8, ArgSeqId,)),
|
|
MMLCmd(0xC3, 'mutechan', sections=(SqSection.SEQ,), args=(ArgS16,), version=(MMLVersion.MM,)),
|
|
# argbits commands
|
|
MMLCmd(0x00, 'testchan', sections=(SqSection.SEQ,), args=(ArgBits4,)),
|
|
MMLCmd(0x40, 'stopchan', sections=(SqSection.SEQ,), args=(ArgBits4,)),
|
|
MMLCmd(0x50, 'subio', sections=(SqSection.SEQ,), args=(IOPort3,)),
|
|
MMLCmd(0x60, 'ldres', sections=(SqSection.SEQ,), args=(ArgBits4, ArgU8, ArgU8,)),
|
|
MMLCmd(0x70, 'stio', sections=(SqSection.SEQ,), args=(IOPort3,)),
|
|
MMLCmd(0x80, 'ldio', sections=(SqSection.SEQ,), args=(IOPort3,)),
|
|
MMLCmd(0x90, 'ldchan', sections=(SqSection.SEQ,), args=(ArgBits4, ArgChanPtr,)),
|
|
MMLCmd(0xA0, 'rldchan', sections=(SqSection.SEQ,), args=(ArgBits4, ArgRelChanPtr,)),
|
|
MMLCmd(0xB0, 'ldseq', sections=(SqSection.SEQ,), args=(ArgBits4, ArgSeqId, ArgUnkPtr,)),
|
|
|
|
#
|
|
# CHAN commands
|
|
#
|
|
# non-argbits commands
|
|
MMLCmd(0xF1, 'allocnotelist', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xF0, 'freenotelist', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xEE, 'bendfine', sections=(SqSection.CHAN,), args=(ArgS8,)),
|
|
MMLCmd(0xED, 'gain', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xEC, 'vibreset', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xEB, 'fontinstr', sections=(SqSection.CHAN,), args=(ArgFontId, ArgInstr)),
|
|
MMLCmd(0xEA, 'stop', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xE9, 'notepri', sections=(SqSection.CHAN,), args=(ArgU4x2,)),
|
|
MMLCmd(0xE8, 'params', sections=(SqSection.CHAN,), args=(ArgU8, ArgU8, ArgU8, ArgS8, ArgS8, ArgU8, ArgU8, ArgU8,)),
|
|
MMLCmd(0xE7, 'ldparams', sections=(SqSection.CHAN,), args=(ArgAddr,)),
|
|
MMLCmd(0xE6, 'samplebook', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xE5, 'reverbidx', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xE4, 'dyncall', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xE3, 'vibdelay', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xE2, 'vibdepthgrad', sections=(SqSection.CHAN,), args=(ArgU8, ArgU8, ArgU8,)),
|
|
MMLCmd(0xE1, 'vibfreqgrad', sections=(SqSection.CHAN,), args=(ArgU8, ArgU8, ArgU8,)),
|
|
MMLCmd(0xE0, 'volexp', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xDF, 'vol', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xDE, 'freqscale', sections=(SqSection.CHAN,), args=(ArgU16,)),
|
|
MMLCmd(0xDD, 'pan', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xDC, 'panweight', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xDB, 'transpose', sections=(SqSection.CHAN,), args=(ArgS8,)),
|
|
MMLCmd(0xDA, 'env', sections=(SqSection.CHAN,), args=(ArgEnvPtr,)),
|
|
MMLCmd(0xD9, 'releaserate', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xD8, 'vibdepth', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xD7, 'vibfreq', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xD4, 'reverb', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xD3, 'bend', sections=(SqSection.CHAN,), args=(ArgS8,)),
|
|
MMLCmd(0xD2, 'sustain', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xD1, 'notealloc', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xD0, 'effects', sections=(SqSection.CHAN,), args=(ArgEffectsConfig,)),
|
|
MMLCmd(0xCF, 'stptrtoseq', sections=(SqSection.CHAN,), args=(ArgAddr,)),
|
|
MMLCmd(0xCE, 'ldptr', sections=(SqSection.CHAN,), args=(ArgAddr,)),
|
|
MMLCmd(0xCD, 'stopchan', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xCC, 'ldi', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xCB, 'ldseq', sections=(SqSection.CHAN,), args=(ArgUnkPtr,)),
|
|
MMLCmd(0xCA, 'mutebhv', sections=(SqSection.CHAN,), args=(ArgHex8,)),
|
|
MMLCmd(0xC9, 'and', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xC8, 'sub', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xC7, 'stseq', sections=(SqSection.CHAN,), args=(ArgU8, ArgAddr,)),
|
|
MMLCmd(0xC6, 'font', sections=(SqSection.CHAN,), args=(ArgFontId,)),
|
|
MMLCmd(0xC5, 'dyntbllookup', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xC4, 'noshort', sections=(SqSection.CHAN,), handler=set_large),
|
|
MMLCmd(0xC3, 'short', sections=(SqSection.CHAN,), handler=set_short),
|
|
MMLCmd(0xC2, 'dyntbl', sections=(SqSection.CHAN,), args=(ArgTblPtr,)),
|
|
MMLCmd(0xC1, 'instr', sections=(SqSection.CHAN,), args=(ArgInstr,)),
|
|
MMLCmd(0xBE, 'unk_BE', sections=(SqSection.CHAN,), args=(ArgU8,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xBD, 'randptr', sections=(SqSection.CHAN,), args=(ArgU16, ArgU16,), version=(MMLVersion.OOT,)),
|
|
MMLCmd(0xBD, 'samplestart', sections=(SqSection.CHAN,), args=(ArgU8,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xBC, 'ptradd', sections=(SqSection.CHAN,), args=(ArgHex16,)),
|
|
MMLCmd(0xBB, 'combfilter', sections=(SqSection.CHAN,), args=(ArgU8, ArgU16)),
|
|
MMLCmd(0xBA, 'randgate', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xB9, 'randvel', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xB8, 'rand', sections=(SqSection.CHAN,), args=(ArgU8,)),
|
|
MMLCmd(0xB7, 'randtoptr', sections=(SqSection.CHAN,), args=(ArgU16,)),
|
|
MMLCmd(0xB6, 'dyntblv', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xB5, 'dyntbltoptr', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xB4, 'ptrtodyntbl', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xB3, 'filter', sections=(SqSection.CHAN,), args=(ArgU4x2,)),
|
|
MMLCmd(0xB2, 'ldseqtoptr', sections=(SqSection.CHAN,), args=(ArgTblPtr,)),
|
|
MMLCmd(0xB1, 'freefilter', sections=(SqSection.CHAN,)),
|
|
MMLCmd(0xB0, 'ldfilter', sections=(SqSection.CHAN,), args=(ArgFilterPtr,)),
|
|
MMLCmd(0xA8, 'randptr', sections=(SqSection.CHAN,), args=(ArgU16, ArgU16,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA7, 'unk_A7', sections=(SqSection.CHAN,), args=(ArgHex8,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA6, 'unk_A6', sections=(SqSection.CHAN,), args=(ArgU8, ArgS16,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA5, 'unk_A5', sections=(SqSection.CHAN,), args=(), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA4, 'unk_A4', sections=(SqSection.CHAN,), args=(ArgU8,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA3, 'unk_A3', sections=(SqSection.CHAN,), args=(), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA2, 'unk_A2', sections=(SqSection.CHAN,), args=(ArgS16,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA1, 'unk_A1', sections=(SqSection.CHAN,), args=(), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xA0, 'unk_A0', sections=(SqSection.CHAN,), args=(ArgS16,), version=(MMLVersion.MM,)),
|
|
# argbits commands
|
|
MMLCmd(0x00, 'cdelay', sections=(SqSection.CHAN,), args=(ArgBits4,)),
|
|
MMLCmd(0x10, 'ldsample', sections=(SqSection.CHAN,), args=(ArgLdSampleInst, IOPort3,)),
|
|
MMLCmd(0x18, 'ldsample', sections=(SqSection.CHAN,), args=(ArgLdSampleSfx, IOPort3,)),
|
|
MMLCmd(0x20, 'ldchan', sections=(SqSection.CHAN,), args=(ArgBits4, ArgChanPtr,)),
|
|
MMLCmd(0x30, 'stcio', sections=(SqSection.CHAN,), args=(ArgBits4, IOPort8,)),
|
|
MMLCmd(0x40, 'ldcio', sections=(SqSection.CHAN,), args=(ArgBits4, IOPort8,)),
|
|
MMLCmd(0x50, 'subio', sections=(SqSection.CHAN,), args=(IOPort3,)),
|
|
MMLCmd(0x60, 'ldio', sections=(SqSection.CHAN,), args=(IOPort3,)),
|
|
MMLCmd(0x70, 'stio', sections=(SqSection.CHAN,), args=(IOPort3,)),
|
|
MMLCmd(0x78, 'rldlayer', sections=(SqSection.CHAN,), args=(ArgBits3, ArgRelLayerPtr,)),
|
|
MMLCmd(0x80, 'testlayer', sections=(SqSection.CHAN,), args=(ArgBits3,)),
|
|
MMLCmd(0x88, 'ldlayer', sections=(SqSection.CHAN,), args=(ArgBits3, ArgLayerPtr,)),
|
|
MMLCmd(0x90, 'dellayer', sections=(SqSection.CHAN,), args=(ArgBits3,)),
|
|
MMLCmd(0x98, 'dynldlayer', sections=(SqSection.CHAN,), args=(ArgBits3,)),
|
|
|
|
#
|
|
# LAYER commands
|
|
#
|
|
# non-argbits commands
|
|
MMLCmd(0xC0, 'ldelay', sections=(SqSection.LAYER,), args=(ArgVar,)),
|
|
MMLCmd(0xC1, 'shortvel', sections=(SqSection.LAYER,), args=(ArgU8,)),
|
|
MMLCmd(0xC2, 'transpose', sections=(SqSection.LAYER,), args=(ArgS8,)),
|
|
MMLCmd(0xC3, 'shortdelay', sections=(SqSection.LAYER,), args=(ArgVar,)),
|
|
MMLCmd(0xC4, 'legato', sections=(SqSection.LAYER,)),
|
|
MMLCmd(0xC5, 'nolegato', sections=(SqSection.LAYER,)),
|
|
MMLCmd(0xC6, 'instr', sections=(SqSection.LAYER,), args=(ArgInstr,)),
|
|
MMLCmd(0xC7, 'portamento', sections=(SqSection.LAYER,), args=(ArgPortamentoMode, ArgPitchU8, ArgPortamentoTime,)),
|
|
MMLCmd(0xC8, 'noportamento', sections=(SqSection.LAYER,)),
|
|
MMLCmd(0xC9, 'shortgate', sections=(SqSection.LAYER,), args=(ArgU8,)),
|
|
MMLCmd(0xCA, 'notepan', sections=(SqSection.LAYER,), args=(ArgU8,)),
|
|
MMLCmd(0xCB, 'env', sections=(SqSection.LAYER,), args=(ArgEnvPtr, ArgU8,)),
|
|
MMLCmd(0xCC, 'nodrumpan', sections=(SqSection.LAYER,)),
|
|
MMLCmd(0xCD, 'stereo', sections=(SqSection.LAYER,), args=(ArgStereoConfig,)),
|
|
MMLCmd(0xCE, 'bendfine', sections=(SqSection.LAYER,), args=(ArgS8,)),
|
|
MMLCmd(0xCF, 'releaserate', sections=(SqSection.LAYER,), args=(ArgU8,)),
|
|
MMLCmd(0xD0, 'ldshortvel', sections=(SqSection.LAYER,), args=(ArgBits4,)),
|
|
MMLCmd(0xE0, 'ldshortgate', sections=(SqSection.LAYER,), args=(ArgBits4,)),
|
|
MMLCmd(0xF0, 'unk_F0', sections=(SqSection.LAYER,), args=(ArgS16,), version=(MMLVersion.MM,)),
|
|
MMLCmd(0xF1, 'surroundeffect', sections=(SqSection.LAYER,), args=(ArgU8,), version=(MMLVersion.MM,)),
|
|
# argbits commands
|
|
# large layer
|
|
MMLCmd(0x00, 'notedvg', sections=(SqSection.LAYER,), args=(ArgPitch, ArgVar, ArgU8, ArgU8,)),
|
|
MMLCmd(0x40, 'notedv', sections=(SqSection.LAYER,), args=(ArgPitch, ArgVar, ArgU8,)),
|
|
MMLCmd(0x80, 'notevg', sections=(SqSection.LAYER,), args=(ArgPitch, ArgU8, ArgU8,)),
|
|
# small layer
|
|
MMLCmd(0x00, 'shortdvg', sections=(SqSection.LAYER,), args=(ArgPitch, ArgVar,)),
|
|
MMLCmd(0x40, 'shortdv', sections=(SqSection.LAYER,), args=(ArgPitch,)),
|
|
MMLCmd(0x80, 'shortvg', sections=(SqSection.LAYER,), args=(ArgPitch,)),
|
|
)
|
|
|
|
#
|
|
# DISASSEMBLER
|
|
#
|
|
|
|
class SequenceFragment:
|
|
def __init__(self, disas, section, data, start, end):
|
|
assert len(data) == end - start , f"Bad: got {len(data)} bytes for range [{start}:{end}] {data}"
|
|
|
|
self.section = section
|
|
self.data = data
|
|
self.start = start
|
|
self.end = end
|
|
self.disas = disas
|
|
|
|
def __str__(self):
|
|
return f"Fragment ({self.section}) [{self.start}, {self.end}]"
|
|
|
|
def __lt__(self, other):
|
|
return self.start < other.start
|
|
|
|
@staticmethod
|
|
def merge(frag1, frag2):
|
|
if frag1 == frag2:
|
|
return frag1
|
|
|
|
if frag1.section != frag2.section:
|
|
return None
|
|
|
|
# don't merge envelopes or tables ever
|
|
if frag1.section in (SqSection.ENVELOPE, SqSection.TABLE):
|
|
return None
|
|
|
|
min_start = min(frag1.start, frag2.start)
|
|
max_start = max(frag1.start, frag2.start)
|
|
min_end = min(frag1.end, frag2.end)
|
|
max_end = max(frag1.end, frag2.end)
|
|
|
|
if max_start > min_end:
|
|
return None
|
|
|
|
data1, data2 = frag1.data, frag2.data
|
|
if frag2.start < frag1.start:
|
|
data1, data2 = data2, data1
|
|
|
|
if min_end == max_end:
|
|
# data1 contains data2
|
|
return SequenceFragment(frag1.disas, frag1.section, data1, min_start, max_end)
|
|
|
|
assert data1[max_start:] == data2[:len(data1)-max_start] , \
|
|
f"Data does not agree on overlap between\n{frag1}\n{frag2}\n{data2[:len(data1)-max_start]}"
|
|
|
|
return SequenceFragment(frag1.disas, frag1.section, data1[:max_start] + data2, min_start, max_end)
|
|
|
|
@dataclass
|
|
class SequenceTableSpec:
|
|
start_offset : int
|
|
num_entries : int
|
|
addend : int
|
|
sectype : SqSection
|
|
|
|
def contains_loc(self, pos):
|
|
return pos in range(self.start_offset, self.start_offset + 2 * self.num_entries)
|
|
|
|
class SequenceDisassembler:
|
|
|
|
def __init__(self, seq_num : int, data : bytes, tables : Optional[Tuple[SequenceTableSpec]], cmds : Tuple[MMLCmd],
|
|
version : MMLVersion, outpath : str, seq_name : str, used_fonts : List[AudiobankFile], all_seq_names):
|
|
self.seq_num = seq_num
|
|
self.seq_name = seq_name
|
|
self.used_fonts = used_fonts
|
|
|
|
self.all_seq_names = all_seq_names
|
|
|
|
self.pos = 0
|
|
self.insn_begin = 0
|
|
self.data = data
|
|
self.hit_eof = False
|
|
self.cur_section = SqSection.SEQ
|
|
self.nesting = 0
|
|
self.portamento_is_special = False
|
|
self.large_notes = True
|
|
|
|
self.outpath = outpath
|
|
|
|
self.cmds : Dict[SqSection, Dict[int, MMLCmd]] = {
|
|
SqSection.SEQ : {},
|
|
SqSection.CHAN : {},
|
|
SqSection.LAYER : {},
|
|
}
|
|
|
|
# preprocess command list into dictionary, possibly duplicating into
|
|
# several id keys if any lsbits are used as an arg
|
|
for cmd in cmds:
|
|
# ignore commands not in this version
|
|
if version not in cmd.version:
|
|
continue
|
|
|
|
# find number of lsbits that don't contribute to the command id
|
|
nbits = 0
|
|
for arg in cmd.args:
|
|
if issubclass(arg, MMLArgBits):
|
|
assert nbits == 0, f"Multiple argbits-type arguments: {cmd}"
|
|
nbits = arg.NBITS
|
|
|
|
id = cmd.cmd_id
|
|
|
|
for section in cmd.sections:
|
|
cmds_s = self.cmds[section]
|
|
|
|
for i in range(1 << nbits):
|
|
new = cmd
|
|
new.mask = (1 << nbits) - 1
|
|
old = cmds_s.get(id + i, None)
|
|
if old is not None:
|
|
assert old.mnemonic in ("notedvg", "notedv", "notevg"), (old.mnemonic, cmd.mnemonic)
|
|
new = (old, cmd)
|
|
|
|
cmds_s[id + i] = new
|
|
|
|
self.force_long = set()
|
|
|
|
self.insn_ranges = []
|
|
|
|
self.coverage = [0] * len(self.data)
|
|
|
|
self.fragments = []
|
|
|
|
self.branch_targets = {}
|
|
self.big_labels = set()
|
|
|
|
self.all_ranges = []
|
|
|
|
self.decode_list = []
|
|
self.all_seen = []
|
|
|
|
self.tables : Optional[Tuple[SequenceTableSpec]] = tables
|
|
self.table_cache = set()
|
|
|
|
self.addends = {}
|
|
|
|
self.unused = []
|
|
|
|
# general helpers
|
|
|
|
def read_u8(self):
|
|
if self.hit_eof:
|
|
raise Exception()
|
|
|
|
if self.pos == len(self.data):
|
|
self.hit_eof = True
|
|
ret = None
|
|
else:
|
|
ret = self.data[self.pos]
|
|
self.pos += 1
|
|
return ret
|
|
|
|
def read_u16(self):
|
|
return (self.read_u8() << 8) | self.read_u8()
|
|
|
|
def read_s16(self):
|
|
return sign_extend(self.read_u16(), 16)
|
|
|
|
def lookup_cmd(self, id : int) -> MMLCmd:
|
|
# lookup command info
|
|
cmd : MMLCmd = self.cmds[self.cur_section].get(id, None)
|
|
assert cmd is not None , (self.cur_section, id, self.cmds)
|
|
|
|
if isinstance(cmd, tuple):
|
|
# select based on whether we're dealing with large or short notes
|
|
cmd = cmd[int(not self.large_notes)]
|
|
|
|
# part of the command byte may be an arg, save the value
|
|
self.bits_val = id & cmd.mask
|
|
|
|
return cmd
|
|
|
|
#
|
|
# analysis helpers
|
|
#
|
|
|
|
def register_addend(self, pos, value):
|
|
self.addends[pos] = value
|
|
|
|
def add_branch_target(self, value, section, big=False):
|
|
self.branch_targets[value] = section
|
|
if big:
|
|
self.big_labels.add(value)
|
|
|
|
def add_ref(self, value, section=None, big=False):
|
|
if section is None:
|
|
self.add_branch_target(value, SqSection.UNKNOWN)
|
|
return
|
|
|
|
self.add_branch_target(value, section, big=big)
|
|
|
|
self.add_job(value, section, self.cur_section)
|
|
|
|
def add_job(self, value, section, from_section=None):
|
|
if value not in self.all_seen:
|
|
self.all_seen.append(value)
|
|
self.decode_list.append((value, section, from_section or section))
|
|
|
|
def merge_frags(self):
|
|
self.fragments = list(sorted(self.fragments))
|
|
|
|
if len(self.fragments) < 2:
|
|
return
|
|
|
|
i = 0
|
|
while i != len(self.fragments) - 1:
|
|
frag1 = self.fragments[i]
|
|
frag2 = self.fragments[i + 1]
|
|
merged = SequenceFragment.merge(frag1, frag2)
|
|
if merged is not None:
|
|
self.fragments[i] = merged
|
|
del self.fragments[i + 1]
|
|
else:
|
|
i += 1
|
|
|
|
#
|
|
# analysis handlers
|
|
#
|
|
|
|
def analyze_code(self): # sequence, channel, layer
|
|
start_pos = self.pos
|
|
|
|
# print(f" << [0x{start_pos:X}/0x{len(self.data):X}] :: {self.cur_section} >>")
|
|
|
|
self.insn_begin = start_pos
|
|
cmd_byte = self.read_u8()
|
|
cmd = self.lookup_cmd(cmd_byte)
|
|
|
|
assert cmd is not None , f"Bad command ID 0x{cmd_byte:02X} for section {self.cur_section.name} at 0x{start_pos:X}"
|
|
# print(hex(cmd_byte))
|
|
|
|
args = [argtype(self) for argtype in cmd.args]
|
|
|
|
raw_data = self.data[start_pos:self.pos]
|
|
|
|
self.insn_ranges.append((start_pos, self.pos))
|
|
|
|
for i in range(start_pos,self.pos):
|
|
self.coverage[i] = self.cur_section
|
|
|
|
# print(f"/* 0x{start_pos:04X} [{' '.join([f'0x{b:02X}' for b in raw_data]):24}] */ {cmd.mnemonic:11} {', '.join([arg.emit(self) for arg in args])}".strip())
|
|
|
|
for arg in args:
|
|
arg.analyze(self)
|
|
|
|
if cmd.handler is not None:
|
|
cmd.handler(cmd, self)
|
|
|
|
self.fragments.append(SequenceFragment(self, self.cur_section, raw_data, start_pos, self.pos))
|
|
|
|
if not (cmd.is_branch_unconditional or cmd.is_terminal):
|
|
self.decode_list.append((self.pos, self.cur_section, self.cur_section))
|
|
|
|
def analyze_table(self):
|
|
assert self.tables is not None, "Found a table but no table spec provided."
|
|
|
|
for table_spec in self.tables:
|
|
if table_spec.contains_loc(self.pos):
|
|
break
|
|
else:
|
|
assert False , f"Found table at {self.pos:04X} but no entry number provided"
|
|
|
|
start_pos = self.pos = table_spec.offset
|
|
if start_pos in self.table_cache:
|
|
return
|
|
|
|
for _ in range(table_spec.num_entries):
|
|
curpos = self.pos
|
|
cur = self.read_u16() - table_spec.addend
|
|
if cur >= len(self.data) - 1:
|
|
assert False , "Bad table pointer"
|
|
|
|
self.add_branch_target(cur, table_spec.sectype, big=True)
|
|
self.add_job(cur, table_spec.sectype, table_spec.sectype)
|
|
self.register_addend(curpos, table_spec.addend)
|
|
|
|
self.fragments.append(SequenceFragment(self, self.cur_section, self.data[start_pos:self.pos], start_pos, self.pos))
|
|
self.table_cache.add(start_pos)
|
|
|
|
def analyze_array(self):
|
|
start_pos = self.pos
|
|
|
|
# TODO better heuristic than just hardcoding 16...
|
|
# it would be better to wait until later to resize arrays though, up to the next identified fragment
|
|
# ARRAY + UNK + OTHER -> ARRAY + OTHER
|
|
for _ in range(16):
|
|
assert self.read_u8() == 0
|
|
|
|
self.fragments.append(SequenceFragment(self, self.cur_section, self.data[start_pos:self.pos], start_pos, self.pos))
|
|
|
|
def analyze_filter(self):
|
|
start_pos = self.pos
|
|
|
|
for _ in range(8):
|
|
assert self.read_u16() == 0
|
|
|
|
self.fragments.append(SequenceFragment(self, self.cur_section, self.data[start_pos:self.pos], start_pos, self.pos))
|
|
|
|
def analyze_envelope(self):
|
|
start_pos = self.pos
|
|
|
|
while True: # dangerous
|
|
delay = self.read_s16()
|
|
arg = self.read_s16()
|
|
if delay < 0:
|
|
break
|
|
|
|
self.fragments.append(SequenceFragment(self, self.cur_section, self.data[start_pos:self.pos], start_pos, self.pos))
|
|
|
|
def analyze_unknown(self):
|
|
self.fragments.append(SequenceFragment(self, self.cur_section, self.data[self.pos:self.pos+2], self.pos, self.pos+2))
|
|
|
|
def analyze(self):
|
|
# mark offset 0 as a SEQ section
|
|
self.add_branch_target(0, SqSection.SEQ, big=True)
|
|
self.decode_list.append((0, SqSection.SEQ, SqSection.SEQ))
|
|
|
|
# analyze all sections, following branches to locate new sections
|
|
while len(self.decode_list) != 0:
|
|
self.pos, self.cur_section, self.refd_from = self.decode_list.pop()
|
|
|
|
if self.pos >= len(self.data):
|
|
# ignore sections that begin past the end of the file
|
|
# TODO should be an error or warning?
|
|
continue
|
|
|
|
# execute handler based on section
|
|
{
|
|
SqSection.SEQ : self.analyze_code,
|
|
SqSection.CHAN : self.analyze_code,
|
|
SqSection.LAYER : self.analyze_code,
|
|
SqSection.TABLE : self.analyze_table,
|
|
SqSection.ARRAY : self.analyze_array,
|
|
SqSection.FILTER : self.analyze_filter,
|
|
SqSection.ENVELOPE : self.analyze_envelope,
|
|
SqSection.UNKNOWN : self.analyze_unknown,
|
|
}[self.cur_section]()
|
|
|
|
# merge fragments
|
|
self.merge_frags()
|
|
|
|
# update coverage
|
|
self.final_cvg = [0] * len(self.data)
|
|
for frag in self.fragments:
|
|
for i in range(frag.start,frag.end):
|
|
self.final_cvg[i] = frag.section
|
|
|
|
# resolve gaps in coverage
|
|
while True:
|
|
# keeps going until there's no zeros except for padding
|
|
try:
|
|
first_zero_idx = self.final_cvg.index(0)
|
|
except ValueError:
|
|
break # no more gaps
|
|
|
|
# there was a gap, handle it
|
|
|
|
if ((first_zero_idx + 0xF) & ~0xF) == len(self.data) and \
|
|
all(b == 0 for b in self.final_cvg[first_zero_idx:]) and \
|
|
all(b == 0 for b in self.data[first_zero_idx:]):
|
|
# there's only padding left, we're done
|
|
break
|
|
else:
|
|
# resolve non-padding gaps with heuristics
|
|
|
|
# TODO any unknown data after a `jump` in a sequence frag should extend the sequence frag
|
|
# TODO any unknown data before a filter should be a balign 16
|
|
|
|
last_zero_idx = first_zero_idx
|
|
while self.final_cvg[last_zero_idx] == 0 and last_zero_idx < len(self.final_cvg)-1:
|
|
self.final_cvg[last_zero_idx] = SqSection.UNKNOWN
|
|
last_zero_idx += 1
|
|
|
|
num_unk = last_zero_idx - first_zero_idx
|
|
|
|
emit_unk = True
|
|
|
|
prev_frag = None
|
|
prev_frag_idx = None
|
|
next_frag = None
|
|
next_frag_idx = None
|
|
|
|
for i,frag in enumerate(self.fragments):
|
|
if frag.end == first_zero_idx:
|
|
prev_frag = frag
|
|
prev_frag_idx = i
|
|
elif frag.start == last_zero_idx:
|
|
next_frag = frag
|
|
next_frag_idx = i
|
|
|
|
# SEQ + UNK -> SEQ
|
|
if prev_frag is not None:
|
|
if prev_frag.section == SqSection.SEQ:
|
|
self.fragments[prev_frag_idx] = SequenceFragment(self, SqSection.SEQ,
|
|
self.data[prev_frag.start:last_zero_idx],
|
|
prev_frag.start, last_zero_idx)
|
|
emit_unk = False
|
|
|
|
if next_frag is not None:
|
|
# UNK + FILTER -> FILTER
|
|
if next_frag.section == SqSection.FILTER and num_unk < 16:
|
|
emit_unk = False
|
|
|
|
# UNK + TABLE -> TABLE
|
|
if next_frag.section == SqSection.TABLE and num_unk < 2:
|
|
emit_unk = False
|
|
|
|
if prev_frag is not None and next_frag is not None:
|
|
# LAYER + UNK + LAYER -> LAYER LAYER LAYER
|
|
if prev_frag.section == SqSection.LAYER and next_frag.section == SqSection.LAYER:
|
|
self.fragments.append(SequenceFragment(self, SqSection.LAYER, self.data[first_zero_idx:last_zero_idx], first_zero_idx, last_zero_idx))
|
|
emit_unk = False
|
|
|
|
# LAYER + UNK + CHANNEL -> LAYER LAYER CHANNEL
|
|
if prev_frag.section == SqSection.LAYER and next_frag.section == SqSection.CHAN:
|
|
self.fragments.append(SequenceFragment(self, SqSection.LAYER, self.data[first_zero_idx:last_zero_idx], first_zero_idx, last_zero_idx))
|
|
emit_unk = False
|
|
|
|
# TABLE + UNK + ENVELOPE -> TABLE + ENVELOPE.. + ENVELOPE
|
|
if prev_frag.section == SqSection.TABLE and next_frag.section == SqSection.ENVELOPE:
|
|
self.fragments.append(SequenceFragment(self, SqSection.ENVELOPE, self.data[first_zero_idx:last_zero_idx], first_zero_idx, last_zero_idx))
|
|
emit_unk = False
|
|
|
|
# ENVELOPE + UNK + ENVELOPE -> ENVELOPE + ENVELOPE.. + ENVELOPE
|
|
if prev_frag.section == SqSection.ENVELOPE and next_frag.section == SqSection.ENVELOPE:
|
|
self.fragments.append(SequenceFragment(self, SqSection.ENVELOPE, self.data[first_zero_idx:last_zero_idx], first_zero_idx, last_zero_idx))
|
|
emit_unk = False
|
|
|
|
if prev_frag is not None and next_frag is None:
|
|
# ENVELOPE + UNK + END -> ENVELOPE + ENVELOPE.. + FILTER.. + END
|
|
if prev_frag.section == SqSection.ENVELOPE:
|
|
if all(b == 0 for b in self.data[first_zero_idx:]):
|
|
for k in range(first_zero_idx, len(self.data), 16):
|
|
if k + 16 > len(self.data):
|
|
# padding
|
|
break
|
|
self.fragments.append(SequenceFragment(self, SqSection.FILTER, self.data[k:k+16], k, k + 16))
|
|
else:
|
|
self.fragments.append(SequenceFragment(self, SqSection.ENVELOPE, self.data[first_zero_idx:last_zero_idx], first_zero_idx, last_zero_idx))
|
|
emit_unk = False
|
|
|
|
if emit_unk:
|
|
# leave it unknown for now, TODO make reasonable guesses
|
|
self.add_branch_target(first_zero_idx, SqSection.UNKNOWN)
|
|
self.fragments.append(SequenceFragment(self, SqSection.UNKNOWN, self.data[first_zero_idx:last_zero_idx], first_zero_idx, last_zero_idx))
|
|
|
|
#
|
|
# disas helpers
|
|
#
|
|
|
|
def label_name(self, value, section, force_big=False):
|
|
if value in self.big_labels or force_big:
|
|
lbl_prefix = section.lbl_prefix + " "
|
|
suffix = ""
|
|
else:
|
|
lbl_prefix = ""
|
|
suffix = ":"
|
|
|
|
return f"{lbl_prefix}{section.prefix}_{value:04X}{suffix}"
|
|
|
|
def emit_branch_target_real(self, outfile, value, section, force_big=False):
|
|
if section is SqSection.UNKNOWN:
|
|
for frag in self.fragments:
|
|
if value in range(frag.start, frag.end):
|
|
section = frag.section
|
|
break
|
|
|
|
outfile.write(f"{self.label_name(value, section, force_big)}\n")
|
|
|
|
def emit_branch_target(self, outfile, start, end, force_big=False):
|
|
did_emit = False
|
|
for b_tgt in self.branch_targets:
|
|
if b_tgt in range(start,end):
|
|
self.emit_branch_target_real(outfile, start, self.branch_targets[b_tgt], force_big)
|
|
did_emit = True
|
|
return did_emit
|
|
|
|
#
|
|
# disas handlers
|
|
#
|
|
|
|
def disas_section(self, frag : SequenceFragment, outfile):
|
|
force_big_lbl = False
|
|
|
|
if self.pos == frag.start:
|
|
# If the previous frag is not the same type as this frag, force the first label to be a big label
|
|
for frag2 in self.fragments:
|
|
frag2 : SequenceFragment
|
|
|
|
if frag2.end == frag.start:
|
|
if frag2.section != frag.section:
|
|
force_big_lbl = True
|
|
break
|
|
|
|
while self.pos < frag.end:
|
|
start_pos = self.pos
|
|
self.insn_begin = start_pos
|
|
|
|
cmd_byte = self.read_u8()
|
|
cmd = self.lookup_cmd(cmd_byte)
|
|
mnemonic = cmd.mnemonic
|
|
|
|
# Hacky fixups for commands using long var encodings when it was not necessary for them to do so, the usual
|
|
# macros for re-assembly only select the long encoding when necessary so switch to special macros that
|
|
# always use the long encoding unconditionally.
|
|
if self.insn_begin in self.force_long:
|
|
if mnemonic == "notedv":
|
|
mnemonic = "noteldv"
|
|
elif mnemonic in ("delay", "ldelay"):
|
|
mnemonic = "lldelay"
|
|
else:
|
|
assert False , mnemonic
|
|
|
|
args = [argtype(self) for argtype in cmd.args]
|
|
raw_data = self.data[start_pos:self.pos]
|
|
|
|
self.emit_branch_target(outfile, start_pos, self.pos, force_big_lbl)
|
|
force_big_lbl = False
|
|
|
|
args_str = ', '.join([arg.emit(self) for arg in args])
|
|
data_str = ' '.join([f'0x{b:02X}' for b in raw_data])
|
|
|
|
outfile.write(f"/* 0x{start_pos:04X} [{data_str:24}] */ {mnemonic:11} {args_str}".strip() + "\n")
|
|
|
|
if cmd.is_terminal or cmd.is_branch_unconditional:
|
|
outfile.write("\n")
|
|
|
|
def disas_table(self, frag : SequenceFragment, outfile):
|
|
base_pos = self.pos
|
|
|
|
while self.pos < frag.end:
|
|
start_pos = self.pos
|
|
|
|
addend = self.addends.get(start_pos, 0)
|
|
|
|
ent = self.read_u16() - addend
|
|
|
|
self.emit_branch_target(outfile, start_pos, self.pos)
|
|
|
|
section = self.branch_targets.get(ent, None)
|
|
|
|
# TODO
|
|
if section is None:
|
|
section = SqSection.UNKNOWN
|
|
|
|
if addend != 0:
|
|
addend_str = f" + {addend}"
|
|
else:
|
|
addend_str = ""
|
|
|
|
# TODO proper label name
|
|
outfile.write(f" entry {section.prefix}_{ent:04X}{addend_str}\n")
|
|
|
|
outfile.write("\n")
|
|
|
|
def disas_filter(self, frag : SequenceFragment, outfile):
|
|
start_pos = self.pos
|
|
|
|
num_filters, align = divmod(len(frag.data), 2 * 8)
|
|
|
|
assert all(b == 0 for b in frag.data)
|
|
assert align == 0
|
|
|
|
for n in range(num_filters):
|
|
self.emit_branch_target_real(outfile, start_pos + n * 2 * 8, SqSection.FILTER, force_big=True)
|
|
outfile.write(" filter 0, 0, 0, 0, 0, 0, 0, 0\n\n")
|
|
|
|
def disas_envelope(self, frag : SequenceFragment, outfile):
|
|
start_pos = self.pos
|
|
|
|
self.emit_branch_target(outfile, start_pos, frag.end)
|
|
|
|
while self.pos < frag.end:
|
|
delay = self.read_s16()
|
|
arg = self.read_s16()
|
|
|
|
if delay == 0 and arg == 0:
|
|
outfile.write(" disable\n")
|
|
elif delay == -1 and arg == 0:
|
|
outfile.write(" hang\n")
|
|
elif delay == -2:
|
|
outfile.write(f" goto {arg}\n")
|
|
elif delay == -3 and arg == 0:
|
|
outfile.write(" restart\n")
|
|
else:
|
|
assert delay > 0
|
|
outfile.write(f" point {delay}, {arg}\n")
|
|
|
|
if delay < 0 and self.pos not in self.branch_targets:
|
|
outfile.write("\n")
|
|
self.emit_branch_target_real(outfile, self.pos, frag.section)
|
|
|
|
outfile.write("\n")
|
|
|
|
def disas_array(self, frag : SequenceFragment, outfile):
|
|
self.emit_branch_target(outfile, frag.start, frag.end)
|
|
|
|
array_data = self.data[frag.start:frag.end]
|
|
if all(b == 0 for b in array_data):
|
|
outfile.write(f".fill 0x{len(array_data):X}\n\n")
|
|
else:
|
|
for b in array_data:
|
|
outfile.write(f".byte 0x{b:2X}\n")
|
|
outfile.write("\n")
|
|
|
|
def disas_unknown(self, frag : SequenceFragment, outfile):
|
|
start_pos = self.pos
|
|
|
|
prev = start_pos
|
|
for b_tgt in sorted(self.branch_targets):
|
|
if b_tgt in range(start_pos+1,frag.end):
|
|
# emit data between this branch target and the previous
|
|
outfile.write(" .byte " + ", ".join(f"0x{b:02X}" for b in self.data[prev:b_tgt]) + "\n\n")
|
|
if b_tgt in range(start_pos,frag.end):
|
|
# emit the branch target
|
|
self.emit_branch_target_real(outfile, b_tgt, SqSection.UNKNOWN)
|
|
prev = b_tgt
|
|
|
|
# write any remaining data if the final branch target was not the end of the frag
|
|
if prev != frag.end:
|
|
outfile.write(" .byte " + ", ".join(f"0x{b:02X}" for b in self.data[prev:frag.end]) + "\n\n")
|
|
|
|
#
|
|
# emit disassembled text
|
|
#
|
|
|
|
def emit(self):
|
|
with open(self.outpath, "w") as outfile:
|
|
# emit header
|
|
outfile.write("#include \"aseq.h\"\n")
|
|
|
|
# emit fonts
|
|
for font in self.used_fonts:
|
|
outfile.write(f"#include \"{font.file_name}.h\"\n")
|
|
outfile.write("\n")
|
|
|
|
outfile.write(f".startseq {self.seq_name}\n\n")
|
|
|
|
# emit fragments
|
|
for frag in sorted(self.fragments):
|
|
frag : SequenceFragment
|
|
|
|
self.cur_section = frag.section
|
|
self.pos = frag.start
|
|
|
|
{
|
|
SqSection.SEQ : self.disas_section,
|
|
SqSection.CHAN : self.disas_section,
|
|
SqSection.LAYER : self.disas_section,
|
|
SqSection.TABLE : self.disas_table,
|
|
SqSection.ARRAY : self.disas_array,
|
|
SqSection.FILTER : self.disas_filter,
|
|
SqSection.ENVELOPE : self.disas_envelope,
|
|
SqSection.UNKNOWN : self.disas_unknown,
|
|
}[frag.section](frag, outfile)
|
|
|
|
outfile.write(f".endseq {self.seq_name}\n")
|
|
|
|
if __name__ == '__main__':
|
|
import sys
|
|
|
|
in_path = sys.argv[1]
|
|
out_path = sys.argv[2]
|
|
|
|
with open(in_path, "rb") as infile:
|
|
data = bytearray(infile.read())
|
|
|
|
class FontDummy:
|
|
def __init__(self, file_name) -> None:
|
|
self.name = file_name
|
|
self.file_name = file_name
|
|
self.instrument_index_map = {}
|
|
|
|
disas = SequenceDisassembler(0, data, None, CMD_SPEC, MMLVersion.MM, out_path, "", [FontDummy("wow")], [])
|
|
disas.analyze()
|
|
disas.emit()
|