+ syms[name] = Symbol(section, int(value, 16), int(size, 16),
+ flags[1] == 'w', None)
+
+ # Sort dict by address
+ return OrderedDict(sorted(syms.items(), key=lambda x: x[1].address))
+
+def GetSymbolFileOffset(fname, patterns):
+ """Get the symbols from an ELF file
+
+ Args:
+ fname: Filename of the ELF file to read
+ patterns: List of regex patterns to search for, each a string
+
+ Returns:
+ None, if the file does not exist, or Dict:
+ key: Name of symbol
+ value: Hex value of symbol
+ """
+ def _GetFileOffset(elf, addr):
+ for seg in elf.iter_segments():
+ seg_end = seg['p_vaddr'] + seg['p_filesz']
+ if seg.header['p_type'] == 'PT_LOAD':
+ if addr >= seg['p_vaddr'] and addr < seg_end:
+ return addr - seg['p_vaddr'] + seg['p_offset']
+
+ if not ELF_TOOLS:
+ raise ValueError('Python elftools package is not available')
+
+ syms = {}
+ with open(fname, 'rb') as fd:
+ elf = ELFFile(fd)
+
+ re_syms = re.compile('|'.join(patterns))
+ for section in elf.iter_sections():
+ if isinstance(section, SymbolTableSection):
+ for symbol in section.iter_symbols():
+ if not re_syms or re_syms.search(symbol.name):
+ addr = symbol.entry['st_value']
+ syms[symbol.name] = Symbol(
+ section.name, addr, symbol.entry['st_size'],
+ symbol.entry['st_info']['bind'] == 'STB_WEAK',
+ _GetFileOffset(elf, addr))