Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/compiler-rt/lib/dfsan/scripts/build-libc-list.py

@@ -0,0 +1,96 @@
+#!/usr/bin/env python
+#===- lib/dfsan/scripts/build-libc-list.py ---------------------------------===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+#===------------------------------------------------------------------------===#
+# The purpose of this script is to identify every function symbol in a set of
+# libraries (in this case, libc and libgcc) so that they can be marked as
+# uninstrumented, thus allowing the instrumentation pass to treat calls to those
+# functions correctly.
+
+import os
+import subprocess
+import sys
+from optparse import OptionParser
+
+def defined_function_list(object):
+  functions = []
+  readelf_proc = subprocess.Popen(['readelf', '-s', '-W', object],
+                                  stdout=subprocess.PIPE)
+  readelf = readelf_proc.communicate()[0].split('\n')
+  if readelf_proc.returncode != 0:
+    raise subprocess.CalledProcessError(readelf_proc.returncode, 'readelf')
+  for line in readelf:
+    if (line[31:35] == 'FUNC' or line[31:36] == 'IFUNC') and \
+       line[39:44] != 'LOCAL' and \
+       line[55:58] != 'UND':
+      function_name = line[59:].split('@')[0]
+      functions.append(function_name)
+  return functions
+
+p = OptionParser()
+
+p.add_option('--libc-dso-path', metavar='PATH',
+             help='path to libc DSO directory',
+             default='/lib/x86_64-linux-gnu')
+p.add_option('--libc-archive-path', metavar='PATH',
+             help='path to libc archive directory',
+             default='/usr/lib/x86_64-linux-gnu')
+
+p.add_option('--libgcc-dso-path', metavar='PATH',
+             help='path to libgcc DSO directory',
+             default='/lib/x86_64-linux-gnu')
+p.add_option('--libgcc-archive-path', metavar='PATH',
+             help='path to libgcc archive directory',
+             default='/usr/lib/gcc/x86_64-linux-gnu/4.6')
+
+p.add_option('--with-libstdcxx', action='store_true',
+             dest='with_libstdcxx',
+             help='include libstdc++ in the list (inadvisable)')
+p.add_option('--libstdcxx-dso-path', metavar='PATH',
+             help='path to libstdc++ DSO directory',
+             default='/usr/lib/x86_64-linux-gnu')
+
+(options, args) = p.parse_args()
+
+libs = [os.path.join(options.libc_dso_path, name) for name in
+        ['ld-linux-x86-64.so.2',
+         'libanl.so.1',
+         'libBrokenLocale.so.1',
+         'libcidn.so.1',
+         'libcrypt.so.1',
+         'libc.so.6',
+         'libdl.so.2',
+         'libm.so.6',
+         'libnsl.so.1',
+         'libpthread.so.0',
+         'libresolv.so.2',
+         'librt.so.1',
+         'libthread_db.so.1',
+         'libutil.so.1']]
+libs += [os.path.join(options.libc_archive_path, name) for name in
+         ['libc_nonshared.a',
+          'libpthread_nonshared.a']]
+
+libs.append(os.path.join(options.libgcc_dso_path, 'libgcc_s.so.1'))
+libs.append(os.path.join(options.libgcc_archive_path, 'libgcc.a'))
+
+if options.with_libstdcxx:
+  libs.append(os.path.join(options.libstdcxx_dso_path, 'libstdc++.so.6'))
+
+functions = []
+for l in libs:
+  if os.path.exists(l):
+    functions += defined_function_list(l)
+  else:
+    print >> sys.stderr, 'warning: library %s not found' % l
+
+functions = list(set(functions))
+functions.sort()
+
+for f in functions:
+  print 'fun:%s=uninstrumented' % f

external/llvm-project/compiler-rt/lib/dfsan/scripts/check_custom_wrappers.sh

@@ -0,0 +1,52 @@
+#!/bin/sh
+
+DFSAN_DIR=$(dirname "$0")/../
+DFSAN_CUSTOM_TESTS=${DFSAN_DIR}/../../test/dfsan/custom.cc
+DFSAN_CUSTOM_WRAPPERS=${DFSAN_DIR}/dfsan_custom.cc
+DFSAN_ABI_LIST=${DFSAN_DIR}/done_abilist.txt
+
+DIFFOUT=$(mktemp -q /tmp/tmp.XXXXXXXXXX)
+ERRORLOG=$(mktemp -q /tmp/tmp.XXXXXXXXXX)
+DIFF_A=$(mktemp -q /tmp/tmp.XXXXXXXXXX)
+DIFF_B=$(mktemp -q /tmp/tmp.XXXXXXXXXX)
+
+on_exit() {
+  rm -f ${DIFFOUT} 2> /dev/null
+  rm -f ${ERRORLOG} 2> /dev/null
+  rm -f ${DIFF_A} 2> /dev/null
+  rm -f ${DIFF_B} 2> /dev/null
+}
+
+# Ignore __sanitizer_cov_trace* because they are implemented elsewhere.
+trap on_exit EXIT
+grep -E "^fun:.*=custom" ${DFSAN_ABI_LIST} \
+  | grep -v "dfsan_get_label\|__sanitizer_cov_trace" \
+  | sed "s/^fun:\(.*\)=custom.*/\1/" | sort > $DIFF_A
+grep -E "__dfsw.*\(" ${DFSAN_CUSTOM_WRAPPERS} \
+  | sed "s/.*__dfsw_\(.*\)(.*/\1/" | sort > $DIFF_B
+diff -u $DIFF_A $DIFF_B > ${DIFFOUT}
+if [ $? -ne 0 ]
+then
+  echo -n "The following differences between the ABI list and ">> ${ERRORLOG}
+  echo "the implemented custom wrappers have been found:" >> ${ERRORLOG}
+  cat ${DIFFOUT} >> ${ERRORLOG}
+fi
+
+grep -E __dfsw_ ${DFSAN_CUSTOM_WRAPPERS} \
+  | sed "s/.*__dfsw_\([^(]*\).*/\1/" | sort > $DIFF_A
+grep -E "^[[:space:]]*test_.*\(\);" ${DFSAN_CUSTOM_TESTS} \
+  | sed "s/.*test_\(.*\)();/\1/" | sort > $DIFF_B
+diff -u $DIFF_A $DIFF_B > ${DIFFOUT}
+if [ $? -ne 0 ]
+then
+  echo -n "The following differences between the implemented " >> ${ERRORLOG}
+  echo "custom wrappers and the tests have been found:" >> ${ERRORLOG}
+  cat ${DIFFOUT} >> ${ERRORLOG}
+fi
+
+if [ -s ${ERRORLOG} ]
+then
+  cat ${ERRORLOG}
+  exit 1
+fi
+