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oot/first_diff.py
cadmic 98a3238822
Set up disassembly for gc-eu-mq (#1613)
* Disassemble gc-eu-mq

* Add script to report progress with matching

* Fix whitespace

* Change T|None to typing.Optional[T]

* Use typing.List

* More type annotations fixes for old Python versions

* Fix type errors

* More type annotations

* Use typing.Iterator

* Use $(PYTHON) for disassembly

* Don't use grouped targets to support very old Make versions

* Docs: suggest checking MM, mention virtualenv, clarify about expected/

* Update sym_info.py

Co-authored-by: Derek Hensley <hensley.derek58@gmail.com>

* Sync functions.txt

* Start banned symbol range at 0x10000000

* Also ban symbols from 0xC0000000-0xFFFFFFFF

* Unban IPL symbols

* Fix first_diff.py

* Sync z_collision_check functions.txt

* Ban 0xA0 symbols too

* Touch .disasm sentinel file

* Copy -jN comment in docs

* diff.py flags: remove -3, add -s

* Update docs/retail_versions.md

Co-authored-by: Yanis42 <35189056+Yanis42@users.noreply.github.com>

* Comment that segments are still from the Debug ROM

* Revert "diff.py flags: remove -3, add -s"

This reverts commit bfaae66c1d.

* Apply suggestions from code review

Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>

* Remove #ifdef example

* Reformat Python files with black

* Add copyright notice to new Python files

* Add TODOs to Makefile

---------

Co-authored-by: Derek Hensley <hensley.derek58@gmail.com>
Co-authored-by: Yanis42 <35189056+Yanis42@users.noreply.github.com>
Co-authored-by: Dragorn421 <Dragorn421@users.noreply.github.com>
2024-01-28 18:09:03 +01:00

49 lines
1.8 KiB
Python
Executable file

#!/usr/bin/env python3
import argparse
from pathlib import Path
import rabbitizer
import mapfile_parser
def decodeInstruction(bytesDiff: bytes, mapFile: mapfile_parser.MapFile) -> str:
word = (bytesDiff[0] << 24) | (bytesDiff[1] << 16) | (bytesDiff[2] << 8) | (bytesDiff[3] << 0)
instr = rabbitizer.Instruction(word)
immOverride = None
if instr.isJumpWithAddress():
# Instruction is a function call (jal)
# Get the embedded address of the function call
symAddress = instr.getInstrIndexAsVram()
# Search for the address in the mapfile
symInfo = mapFile.findSymbolByVramOrVrom(symAddress)
if symInfo is not None:
# Use the symbol from the mapfile instead of a raw value
immOverride = symInfo.symbol.name
return instr.disassemble(immOverride=immOverride, extraLJust=-20)
def firstDiffMain():
parser = argparse.ArgumentParser(description="Find the first difference(s) between the built ROM and the base ROM.")
parser.add_argument("-c", "--count", type=int, default=5, help="find up to this many instruction difference(s)")
parser.add_argument("-v", "--oot-version", help="Which version should be processed", default="gc-eu-mq-dbg")
parser.add_argument("-a", "--add-colons", action='store_true', help="Add colon between bytes" )
args = parser.parse_args()
buildFolder = Path("build") / args.oot_version
BUILTROM = Path(f"oot-{args.oot_version}.z64")
BUILTMAP = buildFolder / "z64.map"
EXPECTEDROM = Path(f"baseroms/{args.oot_version}/baserom-decompressed.z64")
EXPECTEDMAP = "expected" / BUILTMAP
mapfile_parser.frontends.first_diff.doFirstDiff(BUILTMAP, EXPECTEDMAP, BUILTROM, EXPECTEDROM, args.count, mismatchSize=True, addColons=args.add_colons, bytesConverterCallback=decodeInstruction)
if __name__ == "__main__":
firstDiffMain()