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Merge "Fix various bugs in the check-symbols script."

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Elliott Hughes 2015-05-11 20:28:56 +00:00 committed by Gerrit Code Review
commit c9310266dc
1 changed files with 24 additions and 2 deletions
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26
libc/tools/check-symbols.py
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@ -13,9 +13,21 @@ arch = re.sub(r'.*/linux-x86/([^/]+)/.*', r'\1', toolchain)
sys.stderr.write('Checking symbols for arch "%s"...\n' % arch)
def GetSymbols(library, functions_or_variables):
global api
global arch
api = '9'
if library == 'libm' and arch == 'arm':
api = '3'
# There were no 64-bit ABIs before API level 21.
if '64' in arch:
api = '21'
# What GCC calls aarch64, Android calls arm64.
if arch == 'aarch64':
arch = 'arm64'
path = '%s/development/ndk/platforms/android-%s/arch-%s/symbols/%s.so.%s.txt' % (os.environ['ANDROID_BUILD_TOP'], api, arch, library, functions_or_variables)
symbols = set()
for line in open(path, 'r'):
@ -26,7 +38,11 @@ def GetSymbols(library, functions_or_variables):
def CheckSymbols(library, functions_or_variables):
expected_symbols = GetSymbols(library, functions_or_variables)
so_file = '%s/system/lib/%s.so' % (os.environ['ANDROID_PRODUCT_OUT'], library)
lib_dir = 'lib'
if '64' in arch:
lib_dir = 'lib64'
so_file = '%s/system/%s/%s.so' % (os.environ['ANDROID_PRODUCT_OUT'], lib_dir, library)
# Example readelf output:
# 264: 0001623c 4 FUNC GLOBAL DEFAULT 8 cabsf
@ -38,7 +54,7 @@ def CheckSymbols(library, functions_or_variables):
r = re.compile(r' +\d+: [0-9a-f]+ +\d+ (FUNC|OBJECT) +\S+ +\S+ +\d+ (\S+)')
actual_symbols = set()
for line in subprocess.check_output(['readelf', '--dyn-syms', so_file]).split('\n'):
for line in subprocess.check_output(['readelf', '-W', '--dyn-syms', so_file]).split('\n'):
m = r.match(line)
if m:
if m.group(1) == 'FUNC' and functions_or_variables == 'functions':
@ -54,6 +70,12 @@ def CheckSymbols(library, functions_or_variables):
for miss in sorted(missing):
sys.stderr.write(' %s\n' % miss)
extra = actual_symbols - expected_symbols
if len(extra) > 0:
sys.stderr.write('%d extra %s in %s for %s:\n' % (len(extra), functions_or_variables, library, arch))
for s in sorted(extra):
sys.stderr.write(' %s\n' % s)
return len(missing) == 0
CheckSymbols("libc", "functions")