Import compiler-rt release_34 branch r197381.

https://llvm.org/svn/llvm-project/compiler-rt/branches/release_34@197381

1 files changed, 85 insertions, 0 deletions

diff --git a/lib/sanitizer_common/scripts/gen_dynamic_list.py b/lib/sanitizer_common/scripts/gen_dynamic_list.py
new file mode 100755
index 0000000..32ba922
--- /dev/null
+++ b/lib/sanitizer_common/scripts/gen_dynamic_list.py
@@ -0,0 +1,85 @@
+#!/usr/bin/env python
+#===- lib/sanitizer_common/scripts/gen_dynamic_list.py ---------------------===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===------------------------------------------------------------------------===#
+#
+# Generates the list of functions that should be exported from sanitizer
+# runtimes. The output format is recognized by --dynamic-list linker option.
+# Usage:
+#   gen_dynamic_list.py libclang_rt.*san*.a [ files ... ]
+#
+#===------------------------------------------------------------------------===#
+import os
+import re
+import subprocess
+import sys
+
+new_delete = set(['_ZdaPv', '_ZdaPvRKSt9nothrow_t',
+                  '_ZdlPv', '_ZdlPvRKSt9nothrow_t',
+                  '_Znam', '_ZnamRKSt9nothrow_t',
+                  '_Znwm', '_ZnwmRKSt9nothrow_t'])
+
+versioned_functions = set(['memcpy', 'pthread_attr_getaffinity_np',
+                           'pthread_cond_broadcast',
+                           'pthread_cond_destroy', 'pthread_cond_init',
+                           'pthread_cond_signal', 'pthread_cond_timedwait',
+                           'pthread_cond_wait', 'realpath',
+                           'sched_getaffinity'])
+
+def get_global_functions(library):
+  functions = []
+  nm_proc = subprocess.Popen(['nm', library], stdout=subprocess.PIPE,
+                             stderr=subprocess.PIPE)
+  nm_out = nm_proc.communicate()[0].split('\n')
+  if nm_proc.returncode != 0:
+    raise subprocess.CalledProcessError(nm_proc.returncode, 'nm')
+  for line in nm_out:
+    cols = line.split(' ')
+    if (len(cols) == 3 and cols[1] in ('T', 'W')) :
+      functions.append(cols[2])
+  return functions
+
+def main(argv):
+  result = []
+
+  library = argv[1]
+  all_functions = get_global_functions(library)
+  function_set = set(all_functions)
+  for func in all_functions:
+    # Export new/delete operators.
+    if func in new_delete:
+      result.append(func)
+      continue
+    # Export interceptors.
+    match = re.match('__interceptor_(.*)', func)
+    if match:
+      result.append(func)
+      # We have to avoid exporting the interceptors for versioned library
+      # functions due to gold internal error.
+      orig_name = match.group(1)
+      if orig_name in function_set and orig_name not in versioned_functions:
+        result.append(orig_name)
+      continue
+    # Export sanitizer interface functions.
+    if re.match('__sanitizer_(.*)', func):
+      result.append(func)
+
+  # Additional exported functions from files.
+  for fname in argv[2:]:
+    f = open(fname, 'r')
+    for line in f:
+      result.append(line.rstrip())
+  # Print the resulting list in the format recognized by ld.
+  print '{'
+  result.sort()
+  for f in result:
+    print '  ' + f + ';'
+  print '};'
+
+if __name__ == '__main__':
+  main(sys.argv)