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build: symtab: sanitize function name

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Sanitize the function name and only store the valid part.

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
This commit is contained in:
Yong Cong Sin 2024-05-27 15:40:27 +08:00 • committed by David Leach
commit 408d0be89f
1 changed files with 16 additions and 3 deletions
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19
scripts/build/gen_symtab.py
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@ -7,6 +7,7 @@
import argparse import argparse
import sys import sys
import os import os
import re
from elftools.elf.elffile import ELFFile from elftools.elf.elffile import ELFFile
from elftools.elf.descriptions import ( from elftools.elf.descriptions import (
@ -64,6 +65,17 @@ start_addr = 0
symtab_list = [] symtab_list = []
def sanitize_func_name(name):
pattern = r'(^[a-zA-Z_][a-zA-Z0-9_]*)'
match = re.match(pattern, name)
if match:
return match.group(0)
else:
log.error(f"Failed to sanitize function name: {name}")
return name
def main(): def main():
args = parse_args() args = parse_args()
log.set_debug(args.debug) log.set_debug(args.debug)
@ -75,17 +87,18 @@ def main():
symtab = elf.get_section_by_name('.symtab') symtab = elf.get_section_by_name('.symtab')
i = 1 i = 1
for nsym, symbol in enumerate(symtab.iter_symbols()): # pylint: disable=unused-variable for nsym, symbol in enumerate(symtab.iter_symbols()): # pylint: disable=unused-variable
symbol_type = describe_symbol_type(symbol['st_info']['type']) symbol_type = describe_symbol_type(symbol['st_info']['type'])
symbol_addr = symbol['st_value'] symbol_addr = symbol['st_value']
if symbol_type == 'FUNC' and symbol_addr != 0: if symbol_type == 'FUNC' and symbol_addr != 0:
symbol_name = sanitize_func_name(symbol.name)
symtab_list.append(symtab_entry( symtab_list.append(symtab_entry(
symbol_addr, symbol_addr, symbol.name)) symbol_addr, symbol_addr, symbol_name))
log.debug('%6d: %s %.25s' % ( log.debug('%6d: %s %.25s' % (
i, i,
hex(symbol_addr), hex(symbol_addr),
symbol.name)) symbol_name))
i = i + 1 i = i + 1
symtab_list.sort(key=lambda x: x.addr, reverse=False) symtab_list.sort(key=lambda x: x.addr, reverse=False)