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Improve automatic detection of filetype for sym_check

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@232858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier 2015-03-20 23:07:38 +00:00
parent efdefb2cef
commit e199924809
1 changed files with 27 additions and 1 deletions
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28
utils/sym_check/sym_check/util.py
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@ -95,8 +95,34 @@ def demangle_symbol(symbol):
return out
def is_elf(filename):
with open(filename, 'r') as f:
magic_bytes = f.read(4)
return magic_bytes == '\x7fELF'
def is_mach_o(filename):
with open(filename, 'r') as f:
magic_bytes = f.read(4)
return magic_bytes in [
'\xfe\xed\xfa\xce', # MH_MAGIC
'\xce\xfa\xed\xfe', # MH_CIGAM
'\xfe\xed\xfa\xcf', # MH_MAGIC_64
'\xcf\xfa\xed\xfe', # MH_CIGAM_64
'\xca\xfe\xba\xbe', # FAT_MAGIC
'\xbe\xba\xfe\xca' # FAT_CIGAM
]
def is_library_file(filename):
if sys.platform == 'darwin':
return is_mach_o(filename)
else:
return is_elf(filename)
def extract_or_load(filename):
import sym_check.extract
if filename.endswith('.so') or filename.endswith('.dylib'):
if is_library_file(filename):
return sym_check.extract.extract_symbols(filename)
return read_syms_from_file(filename)