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oot/tools/ido_block_numbers.py

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#!/usr/bin/env python3
# SPDX-FileCopyrightText: © 2024 ZeldaRET
# SPDX-License-Identifier: CC0-1.0
# IDO symbol table parser for BSS ordering debugging. The compiler will assign
# "block numbers" or "dense numbers" to symbols in order as it encounters them
# in the source file, and the BSS section is sorted by this block number mod 256.
# This script dumps the compiler-generated symbol table so you can see which
# block numbers are assigned to each symbol.
#
# Resources:
# https://hackmd.io/@Roman971/BJ2DOyhBa
# https://github.com/decompals/ultralib/blob/main/tools/mdebug.py
# https://www.cs.unibo.it/~solmi/teaching/arch_2002-2003/AssemblyLanguageProgDoc.pdf
# https://github.com/decompals/IDO/blob/main/IDO_7.1/dist/compiler_eoe/usr/include/sym.h
# https://github.com/Synray/ido-ucode-utils
from __future__ import annotations
import argparse
from dataclasses import dataclass
import itertools
from pathlib import Path
import platform
import struct
import subprocess
import shlex
import sys
from typing import Optional, Tuple
class Header:
SIZE = 0x60
def __init__(self, data):
(
self.magic,
self.vstamp,
self.ilineMax,
self.cbLine,
self.cbLineOffset,
self.idnMax,
self.cbDnOffset,
self.ipdMax,
self.cbPdOffset,
self.isymMax,
self.cbSymOffset,
self.ioptMax,
self.cbOptOffset,
self.iauxMax,
self.cbAuxOffset,
self.issMax,
self.cbSsOffset,
self.issExtMax,
self.cbSsExtOffset,
self.ifdMax,
self.cbFdOffset,
self.crfd,
self.cbRfdOffset,
self.iextMax,
self.cbExtOffset,
) = struct.unpack(">2H23I", data)
class FileDescriptor:
SIZE = 0x48
def __init__(self, data):
(
self.adr,
self.rss,
self.issBase,
self.cbSs,
self.isymBase,
self.csym,
self.ilineBase,
self.cline,
self.ioptBase,
self.copt,
self.ipdFirst,
self.cpd,
self.iauxBase,
self.caux,
self.rfdBase,
self.crfd,
self.flags,
self.cbLineOffset,
self.cbLine,
) = struct.unpack(">10I2H7I", data)
class Symbol:
SIZE = 0xC
def __init__(self, data):
(
self.iss,
self.value,
self.flags,
) = struct.unpack(">3I", data)
def symbol_type(self):
symbol_types = {
0: "nil",
1: "global",
2: "static",
3: "param",
4: "local",
5: "label",
6: "proc",
7: "block",
8: "end",
9: "member",
10: "typedef",
11: "file",
14: "staticproc",
15: "constant",
26: "struct",
27: "union",
28: "enum",
34: "indirect",
}
return symbol_types[self.flags >> 26]
def symbol_storage_class(self):
symbol_storage_classes = {
0: "nil",
1: "text",
2: "data",
3: "bss",
4: "register",
5: "abs",
6: "undefined",
8: "bits",
9: "dbx",
10: "regimage",
11: "info",
}
return symbol_storage_classes[(self.flags >> 21) & 0x1F]
class ExternalSymbol:
SIZE = 0x10
def __init__(self, data):
(
self.flags,
self.ifd,
) = struct.unpack(">2H", data[0:4])
self.asym = Symbol(data[4:])
def read_entry(data, base, offset, size):
start = base + offset * size
return data[start : start + size]
def read_string(data, start):
size = 0
while data[start + size] != 0:
size += 1
return data[start : start + size].decode("ascii")
@dataclass
class SymbolTableEntry:
symbol: Optional[Symbol]
name: str
extern: bool
def parse_symbol_table(data: bytes) -> list[SymbolTableEntry]:
header = Header(data[0 : Header.SIZE])
# File descriptors
fds = []
for i in range(header.ifdMax):
fds.append(
FileDescriptor(read_entry(data, header.cbFdOffset, i, FileDescriptor.SIZE))
)
# Symbol identifiers ("dense numbers")
entries = []
for i in range(header.idnMax):
ifd, isym = struct.unpack(">II", read_entry(data, header.cbDnOffset, i, 8))
if isym == 0xFFFFF:
sym = None
sym_name = ""
extern = False
else:
extern = ifd == 0x7FFFFFFF
if extern:
ext = ExternalSymbol(
read_entry(data, header.cbExtOffset, isym, ExternalSymbol.SIZE)
)
sym = ext.asym
sym_name = read_string(data, header.cbSsExtOffset + sym.iss)
else:
fd = fds[ifd]
sym = Symbol(
read_entry(
data, header.cbSymOffset, fd.isymBase + isym, Symbol.SIZE
)
)
sym_name = read_string(data, header.cbSsOffset + fd.issBase + sym.iss)
entries.append(SymbolTableEntry(sym, sym_name, extern))
return entries
def print_symbol_table(symbol_table: list[SymbolTableEntry]):
print(f"block [mod 256]: linkage type class name")
for i, entry in enumerate(symbol_table):
if not entry.symbol:
# TODO: is this always a string?
st = "string"
sc = ""
else:
st = entry.symbol.symbol_type()
sc = entry.symbol.symbol_storage_class()
print(
f'{i:>9} [{i%256:>3}]: {"extern" if entry.extern else "":<7} {st:<10} {sc:<9} {entry.name:<40}'
)
@dataclass
class UcodeOp:
opcode: int
opcode_name: str
mtype: int
dtype: int
lexlev: int
i1: int
args: list[int]
const: Optional[int]
string: Optional[bytes]
@dataclass
class UcodeOpInfo:
opcode: int
name: str
length: int
has_const: bool
UCODE_OP_INFO = [
UcodeOpInfo(0x00, "abs", 2, False),
UcodeOpInfo(0x01, "add", 2, False),
UcodeOpInfo(0x02, "adj", 4, False),
UcodeOpInfo(0x03, "aent", 4, False),
UcodeOpInfo(0x04, "and", 2, False),
UcodeOpInfo(0x05, "aos", 2, False),
UcodeOpInfo(0x06, "asym", 4, False),
UcodeOpInfo(0x07, "bgn", 4, False),
UcodeOpInfo(0x08, "bgnb", 2, False),
UcodeOpInfo(0x09, "bsub", 2, False),
UcodeOpInfo(0x0A, "cg1", 2, False),
UcodeOpInfo(0x0B, "cg2", 2, False),
UcodeOpInfo(0x0C, "chkh", 2, False),
UcodeOpInfo(0x0D, "chkl", 2, False),
UcodeOpInfo(0x0E, "chkn", 2, False),
UcodeOpInfo(0x0F, "chkt", 2, False),
UcodeOpInfo(0x10, "cia", 4, True),
UcodeOpInfo(0x11, "clab", 4, False),
UcodeOpInfo(0x12, "clbd", 2, False),
UcodeOpInfo(0x13, "comm", 4, True),
UcodeOpInfo(0x14, "csym", 4, False),
UcodeOpInfo(0x15, "ctrl", 4, False),
UcodeOpInfo(0x16, "cubd", 2, False),
UcodeOpInfo(0x17, "cup", 4, False),
UcodeOpInfo(0x18, "cvt", 4, False),
UcodeOpInfo(0x19, "cvtl", 2, False),
UcodeOpInfo(0x1A, "dec", 2, False),
UcodeOpInfo(0x1B, "def", 4, False),
UcodeOpInfo(0x1C, "dif", 4, False),
UcodeOpInfo(0x1D, "div", 2, False),
UcodeOpInfo(0x1E, "dup", 2, False),
UcodeOpInfo(0x1F, "end", 2, False),
UcodeOpInfo(0x20, "endb", 2, False),
UcodeOpInfo(0x21, "ent", 4, False),
UcodeOpInfo(0x22, "ueof", 2, False),
UcodeOpInfo(0x23, "equ", 2, False),
UcodeOpInfo(0x24, "esym", 4, False),
UcodeOpInfo(0x25, "fill", 4, False),
UcodeOpInfo(0x26, "fjp", 2, False),
UcodeOpInfo(0x27, "fsym", 4, False),
UcodeOpInfo(0x28, "geq", 2, False),
UcodeOpInfo(0x29, "grt", 2, False),
UcodeOpInfo(0x2A, "gsym", 4, False),
UcodeOpInfo(0x2B, "hsym", 4, False),
UcodeOpInfo(0x2C, "icuf", 4, False),
UcodeOpInfo(0x2D, "idx", 2, False),
UcodeOpInfo(0x2E, "iequ", 4, False),
UcodeOpInfo(0x2F, "igeq", 4, False),
UcodeOpInfo(0x30, "igrt", 4, False),
UcodeOpInfo(0x31, "ijp", 2, False),
UcodeOpInfo(0x32, "ilda", 6, False),
UcodeOpInfo(0x33, "ildv", 4, False),
UcodeOpInfo(0x34, "ileq", 4, False),
UcodeOpInfo(0x35, "iles", 4, False),
UcodeOpInfo(0x36, "ilod", 4, False),
UcodeOpInfo(0x37, "inc", 2, False),
UcodeOpInfo(0x38, "ineq", 4, False),
UcodeOpInfo(0x39, "init", 6, True),
UcodeOpInfo(0x3A, "inn", 4, False),
UcodeOpInfo(0x3B, "int", 4, False),
UcodeOpInfo(0x3C, "ior", 2, False),
UcodeOpInfo(0x3D, "isld", 4, False),
UcodeOpInfo(0x3E, "isst", 4, False),
UcodeOpInfo(0x3F, "istr", 4, False),
UcodeOpInfo(0x40, "istv", 4, False),
UcodeOpInfo(0x41, "ixa", 2, False),
UcodeOpInfo(0x42, "lab", 4, False),
UcodeOpInfo(0x43, "lbd", 2, False),
UcodeOpInfo(0x44, "lbdy", 2, False),
UcodeOpInfo(0x45, "lbgn", 2, False),
UcodeOpInfo(0x46, "lca", 4, True),
UcodeOpInfo(0x47, "lda", 6, False),
UcodeOpInfo(0x48, "ldap", 2, False),
UcodeOpInfo(0x49, "ldc", 4, True),
UcodeOpInfo(0x4A, "ldef", 4, False),
UcodeOpInfo(0x4B, "ldsp", 2, False),
UcodeOpInfo(0x4C, "lend", 2, False),
UcodeOpInfo(0x4D, "leq", 2, False),
UcodeOpInfo(0x4E, "les", 2, False),
UcodeOpInfo(0x4F, "lex", 2, False),
UcodeOpInfo(0x50, "lnot", 2, False),
UcodeOpInfo(0x51, "loc", 2, False),
UcodeOpInfo(0x52, "lod", 4, False),
UcodeOpInfo(0x53, "lsym", 4, False),
UcodeOpInfo(0x54, "ltrm", 2, False),
UcodeOpInfo(0x55, "max", 2, False),
UcodeOpInfo(0x56, "min", 2, False),
UcodeOpInfo(0x57, "mod", 2, False),
UcodeOpInfo(0x58, "mov", 4, False),
UcodeOpInfo(0x59, "movv", 2, False),
UcodeOpInfo(0x5A, "mpmv", 4, False),
UcodeOpInfo(0x5B, "mpy", 2, False),
UcodeOpInfo(0x5C, "mst", 2, False),
UcodeOpInfo(0x5D, "mus", 4, False),
UcodeOpInfo(0x5E, "neg", 2, False),
UcodeOpInfo(0x5F, "neq", 2, False),
UcodeOpInfo(0x60, "nop", 2, False),
UcodeOpInfo(0x61, "not", 2, False),
UcodeOpInfo(0x62, "odd", 2, False),
UcodeOpInfo(0x63, "optn", 4, False),
UcodeOpInfo(0x64, "par", 4, False),
UcodeOpInfo(0x65, "pdef", 4, False),
UcodeOpInfo(0x66, "pmov", 4, False),
UcodeOpInfo(0x67, "pop", 2, False),
UcodeOpInfo(0x68, "regs", 4, False),
UcodeOpInfo(0x69, "rem", 2, False),
UcodeOpInfo(0x6A, "ret", 2, False),
UcodeOpInfo(0x6B, "rlda", 4, False),
UcodeOpInfo(0x6C, "rldc", 4, True),
UcodeOpInfo(0x6D, "rlod", 4, False),
UcodeOpInfo(0x6E, "rnd", 4, False),
UcodeOpInfo(0x6F, "rpar", 4, False),
UcodeOpInfo(0x70, "rstr", 4, False),
UcodeOpInfo(0x71, "sdef", 4, False),
UcodeOpInfo(0x72, "sgs", 4, False),
UcodeOpInfo(0x73, "shl", 2, False),
UcodeOpInfo(0x74, "shr", 2, False),
UcodeOpInfo(0x75, "sign", 2, False),
UcodeOpInfo(0x76, "sqr", 2, False),
UcodeOpInfo(0x77, "sqrt", 2, False),
UcodeOpInfo(0x78, "ssym", 4, True),
UcodeOpInfo(0x79, "step", 2, False),
UcodeOpInfo(0x7A, "stp", 2, False),
UcodeOpInfo(0x7B, "str", 4, False),
UcodeOpInfo(0x7C, "stsp", 2, False),
UcodeOpInfo(0x7D, "sub", 2, False),
UcodeOpInfo(0x7E, "swp", 4, False),
UcodeOpInfo(0x7F, "tjp", 2, False),
UcodeOpInfo(0x80, "tpeq", 2, False),
UcodeOpInfo(0x81, "tpge", 2, False),
UcodeOpInfo(0x82, "tpgt", 2, False),
UcodeOpInfo(0x83, "tple", 2, False),
UcodeOpInfo(0x84, "tplt", 2, False),
UcodeOpInfo(0x85, "tpne", 2, False),
UcodeOpInfo(0x86, "typ", 4, False),
UcodeOpInfo(0x87, "ubd", 2, False),
UcodeOpInfo(0x88, "ujp", 2, False),
UcodeOpInfo(0x89, "unal", 2, False),
UcodeOpInfo(0x8A, "uni", 4, False),
UcodeOpInfo(0x8B, "vreg", 4, False),
UcodeOpInfo(0x8C, "xjp", 8, False),
UcodeOpInfo(0x8D, "xor", 2, False),
UcodeOpInfo(0x8E, "xpar", 2, False),
UcodeOpInfo(0x8F, "mtag", 2, False),
UcodeOpInfo(0x90, "alia", 2, False),
UcodeOpInfo(0x91, "ildi", 4, False),
UcodeOpInfo(0x92, "isti", 4, False),
UcodeOpInfo(0x93, "irld", 4, False),
UcodeOpInfo(0x94, "irst", 4, False),
UcodeOpInfo(0x95, "ldrc", 4, False),
UcodeOpInfo(0x96, "msym", 4, False),
UcodeOpInfo(0x97, "rcuf", 4, False),
UcodeOpInfo(0x98, "ksym", 4, False),
UcodeOpInfo(0x99, "osym", 4, False),
UcodeOpInfo(0x9A, "irlv", 2, False),
UcodeOpInfo(0x9B, "irsv", 2, False),
]
def parse_ucode(ucode: bytes) -> list[UcodeOp]:
ops = []
pos = 0
while pos < len(ucode):
opcode = ucode[pos]
mtype = ucode[pos + 1] >> 5
dtype = ucode[pos + 1] & 0x1F
lexlev = int.from_bytes(ucode[pos + 2 : pos + 4], "big")
i1 = int.from_bytes(ucode[pos + 4 : pos + 8], "big")
pos += 8
info = UCODE_OP_INFO[opcode]
size = 4 * info.length
args = []
for _ in range(info.length - 2):
args.append(int.from_bytes(ucode[pos : pos + 4], "big"))
pos += 4
const = None
string = None
if info.has_const:
const = int.from_bytes(ucode[pos : pos + 4], "big")
pos += 8
if dtype in (9, 12, 13, 14, 16) or info.name == "comm":
string = ucode[pos : pos + const]
pos += (const + 7) & ~7
ops.append(
UcodeOp(
opcode,
info.name,
mtype,
dtype,
lexlev,
i1,
args,
const,
string,
)
)
return ops
def print_ucode(ucode: list[UcodeOp]):
for op in ucode:
args = " ".join(f"0x{arg:X}" for arg in op.args)
print(
f"{op.opcode_name:<4} mtype={op.mtype:X} dtype={op.dtype:X} lexlev={op.lexlev} i1={op.i1} args={args}",
end="",
)
if op.const is not None:
print(f" const=0x{op.const:X}", end="")
if op.string is not None:
print(f" string={op.string!r}", end="")
print()
def generate_make_log(oot_version: str) -> list[str]:
is_macos = platform.system() == "Darwin"
make = "gmake" if is_macos else "make"
make_command_line = [
make,
"--always-make",
"--dry-run",
f"VERSION={oot_version}",
]
return subprocess.check_output(make_command_line).decode("utf-8").splitlines()
def find_compiler_command_line(
make_log: list[str], filename: Path
) -> Optional[list[str]]:
found = 0
for line in make_log:
parts = line.split()
if "./tools/preprocess.sh" in parts and "-o" in parts and str(filename) in parts:
compiler_command_line = parts
found += 1
if found != 1:
return None
return compiler_command_line
def run_cfe(
command_line: list[str], keep_files: bool
) -> Tuple[list[SymbolTableEntry], list[UcodeOp]]:
# Assume command line is of the form:
# python3 tools/preprocess.py [COMPILER] [COMPILER_ARGS] [INPUT_FILE]
input_file = Path(command_line[-1])
rest = command_line[:-1]
stem = input_file.stem
symbol_table_file = Path(f"{stem}.T")
ucode_file = Path(f"{stem}.B")
try:
# Invoke compiler
# -Hf stops compilation after cfe so we can inspect the symbol table
subprocess.run(rest + ["-Hf", input_file], check=True)
# Read symbol table
symbol_table = parse_symbol_table(symbol_table_file.read_bytes())
ucode = parse_ucode(ucode_file.read_bytes())
return (symbol_table, ucode)
finally:
# Cleanup
if not keep_files:
symbol_table_file.unlink(missing_ok=True)
ucode_file.unlink(missing_ok=True)
def main():
parser = argparse.ArgumentParser(
description="Dump IDO symbol table for debugging BSS ordering"
)
parser.add_argument("filename", metavar="FILE", type=Path, help="C source file")
parser.add_argument(
"-v",
"--version",
dest="oot_version",
type=str,
default="gc-eu-mq-dbg",
help="OOT version (default: gc-eu-mq-dbg)",
)
parser.add_argument(
"--print-ucode", action="store_true", help="Print cfe ucode output"
)
parser.add_argument(
"--keep-files",
action="store_true",
help="Keep temporary files (symbol table and ucode)",
)
args = parser.parse_args()
print(f"Running make to find compiler command line ...", file=sys.stderr)
make_log = generate_make_log(args.oot_version)
command_line = find_compiler_command_line(make_log, args.filename)
if command_line is None:
print(
f"Error: could not determine compiler command line for {args.filename}",
file=sys.stderr,
)
sys.exit(1)
print(f"Compiler command: {shlex.join(command_line)}", file=sys.stderr)
symbol_table, ucode = run_cfe(command_line, args.keep_files)
print_symbol_table(symbol_table)
if args.print_ucode:
print_ucode(ucode)
if __name__ == "__main__":
main()
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