2024-02-01 02:19:22 +00:00
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#!/usr/bin/env python3
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import subprocess
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import bisect
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import sys
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import dataclasses
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@dataclasses.dataclass
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class Symbol:
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addr: int
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size: int
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ty: str
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scope: str
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name: str
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readelf = subprocess.run(
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2024-02-01 03:30:35 +00:00
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["readelf", "-s", "build/kernel.bin"],
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capture_output=True,
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2024-02-01 02:19:22 +00:00
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encoding="UTF-8"
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)
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symbols = []
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text_start = None
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text_end = None
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for line in readelf.stdout.split("\n")[3:-1]:
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parts = list(line.split());
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sym = Symbol(
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addr=int(parts[1], 16),
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size=int(parts[2]),
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ty=parts[3],
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scope=parts[4],
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name=parts[7] if len(parts) >= 8 else "",
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)
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symbols.append(sym)
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if sym.name == "text_start":
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text_start = sym.addr
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if sym.name == "text_end":
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text_end = sym.addr
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symbols.sort(key=lambda s: s.addr)
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def find_sym(addr):
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try:
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if addr.startswith("0x") or addr.startswith("0X"):
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addr = int(arg[2:], 16)
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else:
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addr = int(arg, 10)
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except:
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print(f"Invalid address: {addr}")
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return
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print(f"Address 0x{addr:016X}:")
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idx = bisect.bisect_right(symbols, addr, key=lambda s: s.addr)
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for i in range(idx-1, 0, -1):
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sym = symbols[i]
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if sym.addr < text_start:
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break
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if sym.addr > text_end:
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break
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print(f"\t{sym.name:<20} [0x{sym.addr:016X} : 0x{sym.size:04X}] {sym.ty:<7} {sym.scope:<7}")
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if sym.ty == "FUNC":
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return
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print("\t<end of text>")
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for arg in sys.argv[1:]:
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find_sym(arg.strip())
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