Add custom getcontext() implementation for Android.

This adds a minimalistic implementation of getcontext()
for Android/ARM and Android/x86. The provided code is
in assembly and only implements the bare minimum required
by Breakpad to get the current processor state.

Note that:

- The FPU state is not saved to the ucontext_t on ARM.
  (that's actually the main difference with a normal
   getcontext() implementation).

  This is normal. On Linux/ARM, such state must be
  obtained with PTRACE_GETVFPREGS instead. This will
  be implemented in a future patch.

- On x86, only the 'regular' FPU state is saved, to
  mimic the GLibc/i386 implementation. The state of
  SSE/SSE2/etc registers is not part of the upstream
  getcontext() implementation.
Review URL: https://breakpad.appspot.com/444002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1024 4c0a9323-5329-0410-9bdc-e9ce6186880e

12 files changed, 1345 insertions, 86 deletions

diff --git a/Makefile.am b/Makefile.am
index 14c7eebd..b6e579a6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -100,6 +100,10 @@ src_client_linux_libbreakpad_client_a_SOURCES = \
 	src/common/linux/linux_libc_support.cc \
 	src/common/linux/memory_mapped_file.cc \
 	src/common/linux/safe_readlink.cc
+if ANDROID_HOST
+src_client_linux_libbreakpad_client_a_SOURCES += \
+	src/common/android/breakpad_getcontext.S
+endif
 endif LINUX_HOST
 
 if !DISABLE_PROCESSOR
@@ -337,6 +341,10 @@ src_client_linux_linux_client_unittest_SOURCES = \
 	src/processor/logging.cc \
 	src/processor/minidump.cc \
 	src/processor/pathname_stripper.cc
+if ANDROID_HOST
+src_client_linux_linux_client_unittest_SOURCES += \
+	src/common/android/breakpad_getcontext.S
+endif
 
 src_client_linux_linux_client_unittest_CPPFLAGS = \
 	-I$(top_srcdir)/src \
@@ -364,6 +372,8 @@ src_client_linux_linux_client_unittest_LDADD = \
 	src/common/string_conversion.o \
 	$(PTHREAD_CFLAGS) $(PTHREAD_LIBS)
 if ANDROID_HOST
+src_client_linux_linux_client_unittest_SOURCES += \
+	src/common/android/breakpad_getcontext_unittest.cc
 src_client_linux_linux_client_unittest_LDFLAGS = \
 	-llog
 endif
diff --git a/Makefile.in b/Makefile.in
index 01c89643..46ff8302 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -88,21 +88,24 @@ check_PROGRAMS = $(am__EXEEXT_4) $(am__EXEEXT_5) $(am__EXEEXT_6) \
 @DISABLE_PROCESSOR_FALSE@am__append_3 = src/libbreakpad.a
 @DISABLE_PROCESSOR_FALSE@am__append_4 = src/third_party/libdisasm/libdisasm.a
 @LINUX_HOST_TRUE@am__append_5 = src/client/linux/libbreakpad_client.a
-@DISABLE_PROCESSOR_FALSE@am__append_6 = \
+@ANDROID_HOST_TRUE@@LINUX_HOST_TRUE@am__append_6 = \
+@ANDROID_HOST_TRUE@@LINUX_HOST_TRUE@	src/common/android/breakpad_getcontext.S
+
+@DISABLE_PROCESSOR_FALSE@am__append_7 = \
 @DISABLE_PROCESSOR_FALSE@	src/processor/minidump_dump \
 @DISABLE_PROCESSOR_FALSE@	src/processor/minidump_stackwalk
 
-@LINUX_HOST_TRUE@am__append_7 = \
+@LINUX_HOST_TRUE@am__append_8 = \
 @LINUX_HOST_TRUE@	src/client/linux/linux_dumper_unittest_helper
 
-@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am__append_8 = \
+@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am__append_9 = \
 @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@	src/tools/linux/core2md/core2md \
 @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@	src/tools/linux/dump_syms/dump_syms \
 @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@	src/tools/linux/md2core/minidump-2-core \
 @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@	src/tools/linux/symupload/minidump_upload \
 @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@	src/tools/linux/symupload/sym_upload
 
-@DISABLE_PROCESSOR_FALSE@am__append_9 = \
+@DISABLE_PROCESSOR_FALSE@am__append_10 = \
 @DISABLE_PROCESSOR_FALSE@	src/common/test_assembler_unittest \
 @DISABLE_PROCESSOR_FALSE@	src/processor/address_map_unittest \
 @DISABLE_PROCESSOR_FALSE@	src/processor/binarystream_unittest \
@@ -127,16 +130,18 @@ check_PROGRAMS = $(am__EXEEXT_4) $(am__EXEEXT_5) $(am__EXEEXT_6) \
 @DISABLE_PROCESSOR_FALSE@	src/processor/stackwalker_x86_unittest \
 @DISABLE_PROCESSOR_FALSE@	src/processor/synth_minidump_unittest
 
-@LINUX_HOST_TRUE@am__append_10 = \
+@LINUX_HOST_TRUE@am__append_11 = \
 @LINUX_HOST_TRUE@	src/client/linux/linux_client_unittest
 
-@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am__append_11 = \
+@DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@am__append_12 = \
 @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@	src/common/dumper_unittest \
 @DISABLE_TOOLS_FALSE@@LINUX_HOST_TRUE@	src/tools/linux/md2core/minidump_2_core_unittest
 
-@DISABLE_PROCESSOR_FALSE@@SELFTEST_TRUE@am__append_12 = \
+@DISABLE_PROCESSOR_FALSE@@SELFTEST_TRUE@am__append_13 = \
 @DISABLE_PROCESSOR_FALSE@@SELFTEST_TRUE@	src/processor/stackwalker_selftest
 
+@ANDROID_HOST_TRUE@@LINUX_HOST_TRUE@am__append_14 = src/common/android/breakpad_getcontext.S \
+@ANDROID_HOST_TRUE@@LINUX_HOST_TRUE@	src/common/android/breakpad_getcontext_unittest.cc
 noinst_PROGRAMS =
 subdir = .
 DIST_COMMON = README $(am__configure_deps) $(dist_doc_DATA) \
@@ -198,8 +203,10 @@ am__src_client_linux_libbreakpad_client_a_SOURCES_DIST =  \
 	src/common/linux/guid_creator.cc \
 	src/common/linux/linux_libc_support.cc \
 	src/common/linux/memory_mapped_file.cc \
-	src/common/linux/safe_readlink.cc
+	src/common/linux/safe_readlink.cc \
+	src/common/android/breakpad_getcontext.S
 am__dirstamp = $(am__leading_dot)dirstamp
+@ANDROID_HOST_TRUE@@LINUX_HOST_TRUE@am__objects_1 = src/common/android/breakpad_getcontext.$(OBJEXT)
 @LINUX_HOST_TRUE@am_src_client_linux_libbreakpad_client_a_OBJECTS = src/client/linux/crash_generation/crash_generation_client.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/client/linux/handler/exception_handler.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/client/linux/handler/minidump_descriptor.$(OBJEXT) \
@@ -216,7 +223,8 @@ am__dirstamp = $(am__leading_dot)dirstamp
 @LINUX_HOST_TRUE@	src/common/linux/guid_creator.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/common/linux/linux_libc_support.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/common/linux/memory_mapped_file.$(OBJEXT) \
-@LINUX_HOST_TRUE@	src/common/linux/safe_readlink.$(OBJEXT)
+@LINUX_HOST_TRUE@	src/common/linux/safe_readlink.$(OBJEXT) \
+@LINUX_HOST_TRUE@	$(am__objects_1)
 src_client_linux_libbreakpad_client_a_OBJECTS =  \
 	$(am_src_client_linux_libbreakpad_client_a_OBJECTS)
 src_libbreakpad_a_AR = $(AR) $(ARFLAGS)
@@ -427,7 +435,11 @@ am__src_client_linux_linux_client_unittest_SOURCES_DIST =  \
 	src/testing/gtest/src/gtest_main.cc \
 	src/testing/src/gmock-all.cc \
 	src/processor/basic_code_modules.cc src/processor/logging.cc \
-	src/processor/minidump.cc src/processor/pathname_stripper.cc
+	src/processor/minidump.cc src/processor/pathname_stripper.cc \
+	src/common/android/breakpad_getcontext.S \
+	src/common/android/breakpad_getcontext_unittest.cc
+@ANDROID_HOST_TRUE@@LINUX_HOST_TRUE@am__objects_2 = src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.$(OBJEXT) \
+@ANDROID_HOST_TRUE@@LINUX_HOST_TRUE@	src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.$(OBJEXT)
 @LINUX_HOST_TRUE@am_src_client_linux_linux_client_unittest_OBJECTS = src/client/linux/handler/src_client_linux_linux_client_unittest-exception_handler_unittest.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-directory_reader_unittest.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-line_reader_unittest.$(OBJEXT) \
@@ -447,7 +459,8 @@ am__src_client_linux_linux_client_unittest_SOURCES_DIST =  \
 @LINUX_HOST_TRUE@	src/processor/src_client_linux_linux_client_unittest-basic_code_modules.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/processor/src_client_linux_linux_client_unittest-logging.$(OBJEXT) \
 @LINUX_HOST_TRUE@	src/processor/src_client_linux_linux_client_unittest-minidump.$(OBJEXT) \
-@LINUX_HOST_TRUE@	src/processor/src_client_linux_linux_client_unittest-pathname_stripper.$(OBJEXT)
+@LINUX_HOST_TRUE@	src/processor/src_client_linux_linux_client_unittest-pathname_stripper.$(OBJEXT) \
+@LINUX_HOST_TRUE@	$(am__objects_2)
 src_client_linux_linux_client_unittest_OBJECTS =  \
 	$(am_src_client_linux_linux_client_unittest_OBJECTS)
 am__DEPENDENCIES_1 =
@@ -1031,6 +1044,8 @@ DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)/src
 depcomp = $(SHELL) $(top_srcdir)/autotools/depcomp
 am__depfiles_maybe = depfiles
 am__mv = mv -f
+CPPASCOMPILE = $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 CCLD = $(CC)
@@ -1140,6 +1155,9 @@ AUTOHEADER = @AUTOHEADER@
 AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
 CC = @CC@
+CCAS = @CCAS@
+CCASDEPMODE = @CCASDEPMODE@
+CCASFLAGS = @CCASFLAGS@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
 CPP = @CPP@
@@ -1253,8 +1271,7 @@ dist_doc_DATA = \
 
 noinst_LIBRARIES = $(am__append_4)
 lib_LIBRARIES = $(am__append_3) $(am__append_5)
-@LINUX_HOST_TRUE@src_client_linux_libbreakpad_client_a_SOURCES = \
-@LINUX_HOST_TRUE@	src/client/linux/crash_generation/crash_generation_client.cc \
+@LINUX_HOST_TRUE@src_client_linux_libbreakpad_client_a_SOURCES = src/client/linux/crash_generation/crash_generation_client.cc \
 @LINUX_HOST_TRUE@	src/client/linux/handler/exception_handler.cc \
 @LINUX_HOST_TRUE@	src/client/linux/handler/minidump_descriptor.cc \
 @LINUX_HOST_TRUE@	src/client/linux/log/log.cc \
@@ -1262,16 +1279,15 @@ lib_LIBRARIES = $(am__append_3) $(am__append_5)
 @LINUX_HOST_TRUE@	src/client/linux/minidump_writer/linux_ptrace_dumper.cc \
 @LINUX_HOST_TRUE@	src/client/linux/minidump_writer/minidump_writer.cc \
 @LINUX_HOST_TRUE@	src/client/minidump_file_writer.cc \
-@LINUX_HOST_TRUE@	src/common/convert_UTF.c \
-@LINUX_HOST_TRUE@	src/common/md5.cc \
+@LINUX_HOST_TRUE@	src/common/convert_UTF.c src/common/md5.cc \
 @LINUX_HOST_TRUE@	src/common/string_conversion.cc \
 @LINUX_HOST_TRUE@	src/common/linux/elfutils.cc \
 @LINUX_HOST_TRUE@	src/common/linux/file_id.cc \
 @LINUX_HOST_TRUE@	src/common/linux/guid_creator.cc \
 @LINUX_HOST_TRUE@	src/common/linux/linux_libc_support.cc \
 @LINUX_HOST_TRUE@	src/common/linux/memory_mapped_file.cc \
-@LINUX_HOST_TRUE@	src/common/linux/safe_readlink.cc
-
+@LINUX_HOST_TRUE@	src/common/linux/safe_readlink.cc \
+@LINUX_HOST_TRUE@	$(am__append_6)
 @DISABLE_PROCESSOR_FALSE@src_libbreakpad_a_SOURCES = \
 @DISABLE_PROCESSOR_FALSE@	src/google_breakpad/common/breakpad_types.h \
 @DISABLE_PROCESSOR_FALSE@	src/google_breakpad/common/minidump_format.h \
@@ -1410,8 +1426,7 @@ TESTS = $(check_PROGRAMS) $(check_SCRIPTS)
 @LINUX_HOST_TRUE@src_client_linux_linux_dumper_unittest_helper_CXXFLAGS = $(PTHREAD_CFLAGS)
 @LINUX_HOST_TRUE@src_client_linux_linux_dumper_unittest_helper_LDFLAGS = $(PTHREAD_CFLAGS)
 @LINUX_HOST_TRUE@src_client_linux_linux_dumper_unittest_helper_CC = $(PTHREAD_CC)
-@LINUX_HOST_TRUE@src_client_linux_linux_client_unittest_SOURCES = \
-@LINUX_HOST_TRUE@	src/client/linux/handler/exception_handler_unittest.cc \
+@LINUX_HOST_TRUE@src_client_linux_linux_client_unittest_SOURCES = src/client/linux/handler/exception_handler_unittest.cc \
 @LINUX_HOST_TRUE@	src/client/linux/minidump_writer/directory_reader_unittest.cc \
 @LINUX_HOST_TRUE@	src/client/linux/minidump_writer/line_reader_unittest.cc \
 @LINUX_HOST_TRUE@	src/client/linux/minidump_writer/linux_core_dumper.cc \
@@ -1430,8 +1445,8 @@ TESTS = $(check_PROGRAMS) $(check_SCRIPTS)
 @LINUX_HOST_TRUE@	src/processor/basic_code_modules.cc \
 @LINUX_HOST_TRUE@	src/processor/logging.cc \
 @LINUX_HOST_TRUE@	src/processor/minidump.cc \
-@LINUX_HOST_TRUE@	src/processor/pathname_stripper.cc
-
+@LINUX_HOST_TRUE@	src/processor/pathname_stripper.cc \
+@LINUX_HOST_TRUE@	$(am__append_14)
 @LINUX_HOST_TRUE@src_client_linux_linux_client_unittest_CPPFLAGS = \
 @LINUX_HOST_TRUE@	-I$(top_srcdir)/src \
 @LINUX_HOST_TRUE@	-I$(top_srcdir)/src/testing/include \
@@ -2160,7 +2175,7 @@ EXTRA_DIST = \
 all: all-am
 
 .SUFFIXES:
-.SUFFIXES: .c .cc .o .obj
+.SUFFIXES: .S .c .cc .o .obj
 am--refresh:
 	@:
 $(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
@@ -2334,6 +2349,15 @@ src/common/linux/memory_mapped_file.$(OBJEXT):  \
 src/common/linux/safe_readlink.$(OBJEXT):  \
 	src/common/linux/$(am__dirstamp) \
 	src/common/linux/$(DEPDIR)/$(am__dirstamp)
+src/common/android/$(am__dirstamp):
+	@$(MKDIR_P) src/common/android
+	@: > src/common/android/$(am__dirstamp)
+src/common/android/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) src/common/android/$(DEPDIR)
+	@: > src/common/android/$(DEPDIR)/$(am__dirstamp)
+src/common/android/breakpad_getcontext.$(OBJEXT):  \
+	src/common/android/$(am__dirstamp) \
+	src/common/android/$(DEPDIR)/$(am__dirstamp)
 src/client/linux/$(am__dirstamp):
 	@$(MKDIR_P) src/client/linux
 	@: > src/client/linux/$(am__dirstamp)
@@ -2599,6 +2623,12 @@ src/processor/src_client_linux_linux_client_unittest-minidump.$(OBJEXT):  \
 src/processor/src_client_linux_linux_client_unittest-pathname_stripper.$(OBJEXT):  \
 	src/processor/$(am__dirstamp) \
 	src/processor/$(DEPDIR)/$(am__dirstamp)
+src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.$(OBJEXT):  \
+	src/common/android/$(am__dirstamp) \
+	src/common/android/$(DEPDIR)/$(am__dirstamp)
+src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.$(OBJEXT):  \
+	src/common/android/$(am__dirstamp) \
+	src/common/android/$(DEPDIR)/$(am__dirstamp)
 src/client/linux/linux_client_unittest$(EXEEXT): $(src_client_linux_linux_client_unittest_OBJECTS) $(src_client_linux_linux_client_unittest_DEPENDENCIES) src/client/linux/$(am__dirstamp)
 	@rm -f src/client/linux/linux_client_unittest$(EXEEXT)
 	$(src_client_linux_linux_client_unittest_LINK) $(src_client_linux_linux_client_unittest_OBJECTS) $(src_client_linux_linux_client_unittest_LDADD) $(LIBS)
@@ -3194,6 +3224,9 @@ mostlyclean-compile:
 	-rm -f src/client/linux/minidump_writer/src_client_linux_linux_client_unittest-minidump_writer_unittest_utils.$(OBJEXT)
 	-rm -f src/client/linux/minidump_writer/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.$(OBJEXT)
 	-rm -f src/client/minidump_file_writer.$(OBJEXT)
+	-rm -f src/common/android/breakpad_getcontext.$(OBJEXT)
+	-rm -f src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.$(OBJEXT)
+	-rm -f src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.$(OBJEXT)
 	-rm -f src/common/convert_UTF.$(OBJEXT)
 	-rm -f src/common/dwarf/bytereader.$(OBJEXT)
 	-rm -f src/common/dwarf/dwarf2diehandler.$(OBJEXT)
@@ -3457,6 +3490,9 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@src/common/$(DEPDIR)/stabs_reader.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@src/common/$(DEPDIR)/stabs_to_module.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@src/common/$(DEPDIR)/string_conversion.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@src/common/android/$(DEPDIR)/breakpad_getcontext.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/bytereader.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/dwarf2diehandler.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@src/common/dwarf/$(DEPDIR)/dwarf2reader.Po@am__quote@
@@ -3631,6 +3667,36 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@src/tools/linux/symupload/$(DEPDIR)/minidump_upload.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@src/tools/linux/symupload/$(DEPDIR)/sym_upload.Po@am__quote@
 
+.S.o:
+@am__fastdepCCAS_TRUE@	depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
+@am__fastdepCCAS_TRUE@	$(CPPASCOMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCCAS_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(CPPASCOMPILE) -c -o $@ $<
+
+.S.obj:
+@am__fastdepCCAS_TRUE@	depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.obj$$||'`;\
+@am__fastdepCCAS_TRUE@	$(CPPASCOMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ `$(CYGPATH_W) '$<'` &&\
+@am__fastdepCCAS_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(CPPASCOMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.o: src/common/android/breakpad_getcontext.S
+@am__fastdepCCAS_TRUE@	$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -MT src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.o -MD -MP -MF src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext.Tpo -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.o `test -f 'src/common/android/breakpad_getcontext.S' || echo '$(srcdir)/'`src/common/android/breakpad_getcontext.S
+@am__fastdepCCAS_TRUE@	$(am__mv) src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext.Tpo src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='src/common/android/breakpad_getcontext.S' object='src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.o `test -f 'src/common/android/breakpad_getcontext.S' || echo '$(srcdir)/'`src/common/android/breakpad_getcontext.S
+
+src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.obj: src/common/android/breakpad_getcontext.S
+@am__fastdepCCAS_TRUE@	$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -MT src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.obj -MD -MP -MF src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext.Tpo -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.obj `if test -f 'src/common/android/breakpad_getcontext.S'; then $(CYGPATH_W) 'src/common/android/breakpad_getcontext.S'; else $(CYGPATH_W) '$(srcdir)/src/common/android/breakpad_getcontext.S'; fi`
+@am__fastdepCCAS_TRUE@	$(am__mv) src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext.Tpo src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='src/common/android/breakpad_getcontext.S' object='src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext.obj `if test -f 'src/common/android/breakpad_getcontext.S'; then $(CYGPATH_W) 'src/common/android/breakpad_getcontext.S'; else $(CYGPATH_W) '$(srcdir)/src/common/android/breakpad_getcontext.S'; fi`
+
 .c.o:
 @am__fastdepCC_TRUE@	depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
 @am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
@@ -3943,6 +4009,20 @@ src/processor/src_client_linux_linux_client_unittest-pathname_stripper.obj: src/
 @AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/processor/src_client_linux_linux_client_unittest-pathname_stripper.obj `if test -f 'src/processor/pathname_stripper.cc'; then $(CYGPATH_W) 'src/processor/pathname_stripper.cc'; else $(CYGPATH_W) '$(srcdir)/src/processor/pathname_stripper.cc'; fi`
 
+src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.o: src/common/android/breakpad_getcontext_unittest.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.o -MD -MP -MF src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.Tpo -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.o `test -f 'src/common/android/breakpad_getcontext_unittest.cc' || echo '$(srcdir)/'`src/common/android/breakpad_getcontext_unittest.cc
+@am__fastdepCXX_TRUE@	$(am__mv) src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.Tpo src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='src/common/android/breakpad_getcontext_unittest.cc' object='src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.o `test -f 'src/common/android/breakpad_getcontext_unittest.cc' || echo '$(srcdir)/'`src/common/android/breakpad_getcontext_unittest.cc
+
+src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.obj: src/common/android/breakpad_getcontext_unittest.cc
+@am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -MT src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.obj -MD -MP -MF src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.Tpo -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.obj `if test -f 'src/common/android/breakpad_getcontext_unittest.cc'; then $(CYGPATH_W) 'src/common/android/breakpad_getcontext_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/android/breakpad_getcontext_unittest.cc'; fi`
+@am__fastdepCXX_TRUE@	$(am__mv) src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.Tpo src/common/android/$(DEPDIR)/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.Po
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	source='src/common/android/breakpad_getcontext_unittest.cc' object='src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCXX_FALSE@	DEPDIR=$(DEPDIR) $(CXXDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCXX_FALSE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(src_client_linux_linux_client_unittest_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) -c -o src/common/android/src_client_linux_linux_client_unittest-breakpad_getcontext_unittest.obj `if test -f 'src/common/android/breakpad_getcontext_unittest.cc'; then $(CYGPATH_W) 'src/common/android/breakpad_getcontext_unittest.cc'; else $(CYGPATH_W) '$(srcdir)/src/common/android/breakpad_getcontext_unittest.cc'; fi`
+
 src/client/linux/minidump_writer/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.o: src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc
 @am__fastdepCXX_TRUE@	$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(src_client_linux_linux_dumper_unittest_helper_CXXFLAGS) $(CXXFLAGS) -MT src/client/linux/minidump_writer/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.o -MD -MP -MF src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.Tpo -c -o src/client/linux/minidump_writer/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.o `test -f 'src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc' || echo '$(srcdir)/'`src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc
 @am__fastdepCXX_TRUE@	$(am__mv) src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.Tpo src/client/linux/minidump_writer/$(DEPDIR)/src_client_linux_linux_dumper_unittest_helper-linux_dumper_unittest_helper.Po
@@ -5992,6 +6072,8 @@ distclean-generic:
 	-rm -f src/client/linux/minidump_writer/$(am__dirstamp)
 	-rm -f src/common/$(DEPDIR)/$(am__dirstamp)
 	-rm -f src/common/$(am__dirstamp)
+	-rm -f src/common/android/$(DEPDIR)/$(am__dirstamp)
+	-rm -f src/common/android/$(am__dirstamp)
 	-rm -f src/common/dwarf/$(DEPDIR)/$(am__dirstamp)
 	-rm -f src/common/dwarf/$(am__dirstamp)
 	-rm -f src/common/linux/$(DEPDIR)/$(am__dirstamp)
@@ -6028,7 +6110,7 @@ clean-am: clean-binPROGRAMS clean-checkPROGRAMS clean-generic \
 
 distclean: distclean-am
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
-	-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/log/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/core2md/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
+	-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/log/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/android/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/core2md/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-hdr distclean-tags
@@ -6076,7 +6158,7 @@ installcheck-am:
 maintainer-clean: maintainer-clean-am
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
 	-rm -rf $(top_srcdir)/autom4te.cache
-	-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/log/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/core2md/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
+	-rm -rf src/client/$(DEPDIR) src/client/linux/crash_generation/$(DEPDIR) src/client/linux/handler/$(DEPDIR) src/client/linux/log/$(DEPDIR) src/client/linux/minidump_writer/$(DEPDIR) src/common/$(DEPDIR) src/common/android/$(DEPDIR) src/common/dwarf/$(DEPDIR) src/common/linux/$(DEPDIR) src/common/linux/tests/$(DEPDIR) src/common/tests/$(DEPDIR) src/processor/$(DEPDIR) src/testing/gtest/src/$(DEPDIR) src/testing/src/$(DEPDIR) src/third_party/libdisasm/$(DEPDIR) src/tools/linux/core2md/$(DEPDIR) src/tools/linux/dump_syms/$(DEPDIR) src/tools/linux/md2core/$(DEPDIR) src/tools/linux/symupload/$(DEPDIR)
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
diff --git a/aclocal.m4 b/aclocal.m4
index 47616f29..62c681e9 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -55,6 +55,28 @@ m4_ifndef([AC_AUTOCONF_VERSION],
   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
 
+# Figure out how to run the assembler.                      -*- Autoconf -*-
+
+# Copyright (C) 2001, 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# AM_PROG_AS
+# ----------
+AC_DEFUN([AM_PROG_AS],
+[# By default we simply use the C compiler to build assembly code.
+AC_REQUIRE([AC_PROG_CC])
+test "${CCAS+set}" = set || CCAS=$CC
+test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
+AC_ARG_VAR([CCAS],      [assembler compiler command (defaults to CC)])
+AC_ARG_VAR([CCASFLAGS], [assembler compiler flags (defaults to CFLAGS)])
+_AM_IF_OPTION([no-dependencies],, [_AM_DEPENDENCIES([CCAS])])dnl
+])
+
 # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
 
 # Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
diff --git a/android/google_breakpad/Android.mk b/android/google_breakpad/Android.mk
index 784dc511..7bd44003 100644
--- a/android/google_breakpad/Android.mk
+++ b/android/google_breakpad/Android.mk
@@ -83,6 +83,7 @@ LOCAL_SRC_FILES := \
     src/client/linux/minidump_writer/linux_ptrace_dumper.cc \
     src/client/linux/minidump_writer/minidump_writer.cc \
     src/client/minidump_file_writer.cc \
+    src/common/android/breakpad_getcontext.S \
     src/common/convert_UTF.c \
     src/common/md5.cc src/common/string_conversion.cc \
     src/common/linux/elfutils.cc \
diff --git a/configure b/configure
index 1598db69..27f6bf56 100755
--- a/configure
+++ b/configure
@@ -624,6 +624,11 @@ ac_ct_CXX
 CXXFLAGS
 CXX
 CPP
+am__fastdepCCAS_FALSE
+am__fastdepCCAS_TRUE
+CCASDEPMODE
+CCASFLAGS
+CCAS
 am__fastdepCC_FALSE
 am__fastdepCC_TRUE
 CCDEPMODE
@@ -726,6 +731,8 @@ CFLAGS
 LDFLAGS
 LIBS
 CPPFLAGS
+CCAS
+CCASFLAGS
 CPP
 CXX
 CXXFLAGS
@@ -1365,6 +1372,8 @@ Some influential environment variables:
   LIBS        libraries to pass to the linker, e.g. -l<library>
   CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
               you have headers in a nonstandard directory <include dir>
+  CCAS        assembler compiler command (defaults to CC)
+  CCASFLAGS   assembler compiler flags (defaults to CFLAGS)
   CPP         C preprocessor
   CXX         C++ compiler command
   CXXFLAGS    C++ compiler flags
@@ -2783,6 +2792,68 @@ $as_echo "$am_cv_prog_tar_ustar" >&6; }
 ac_config_headers="$ac_config_headers src/config.h"
 
 
+DEPDIR="${am__leading_dot}deps"
+
+ac_config_commands="$ac_config_commands depfiles"
+
+
+am_make=${MAKE-make}
+cat > confinc << 'END'
+am__doit:
+	@echo this is the am__doit target
+.PHONY: am__doit
+END
+# If we don't find an include directive, just comment out the code.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for style of include used by $am_make" >&5
+$as_echo_n "checking for style of include used by $am_make... " >&6; }
+am__include="#"
+am__quote=
+_am_result=none
+# First try GNU make style include.
+echo "include confinc" > confmf
+# Ignore all kinds of additional output from `make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+  am__include=include
+  am__quote=
+  _am_result=GNU
+  ;;
+esac
+# Now try BSD make style include.
+if test "$am__include" = "#"; then
+   echo '.include "confinc"' > confmf
+   case `$am_make -s -f confmf 2> /dev/null` in #(
+   *the\ am__doit\ target*)
+     am__include=.include
+     am__quote="\""
+     _am_result=BSD
+     ;;
+   esac
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $_am_result" >&5
+$as_echo "$_am_result" >&6; }
+rm -f confinc confmf
+
+# Check whether --enable-dependency-tracking was given.
+if test "${enable_dependency_tracking+set}" = set; then :
+  enableval=$enable_dependency_tracking;
+fi
+
+if test "x$enable_dependency_tracking" != xno; then
+  am_depcomp="$ac_aux_dir/depcomp"
+  AMDEPBACKSLASH='\'
+fi
+ if test "x$enable_dependency_tracking" != xno; then
+  AMDEP_TRUE=
+  AMDEP_FALSE='#'
+else
+  AMDEP_TRUE='#'
+  AMDEP_FALSE=
+fi
+
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -3573,68 +3644,805 @@ ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
-DEPDIR="${am__leading_dot}deps"
 
-ac_config_commands="$ac_config_commands depfiles"
+depcc="$CC"   am_compiler_list=
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+$as_echo_n "checking dependency style of $depcc... " >&6; }
+if test "${am_cv_CC_dependencies_compiler_type+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
+  # making bogus files that we don't know about and never remove.  For
+  # instance it was reported that on HP-UX the gcc test will end up
+  # making a dummy file named `D' -- because `-MD' means `put the output
+  # in D'.
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$am_depcomp" conftest.dir
+  cd conftest.dir
+  # We will build objects and dependencies in a subdirectory because
+  # it helps to detect inapplicable dependency modes.  For instance
+  # both Tru64's cc and ICC support -MD to output dependencies as a
+  # side effect of compilation, but ICC will put the dependencies in
+  # the current directory while Tru64 will put them in the object
+  # directory.
+  mkdir sub
 
-am_make=${MAKE-make}
-cat > confinc << 'END'
-am__doit:
-	@echo this is the am__doit target
-.PHONY: am__doit
-END
-# If we don't find an include directive, just comment out the code.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for style of include used by $am_make" >&5
-$as_echo_n "checking for style of include used by $am_make... " >&6; }
-am__include="#"
-am__quote=
-_am_result=none
-# First try GNU make style include.
-echo "include confinc" > confmf
-# Ignore all kinds of additional output from `make'.
-case `$am_make -s -f confmf 2> /dev/null` in #(
-*the\ am__doit\ target*)
-  am__include=include
-  am__quote=
-  _am_result=GNU
-  ;;
+  am_cv_CC_dependencies_compiler_type=none
+  if test "$am_compiler_list" = ""; then
+     am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+  fi
+  am__universal=false
+  case " $depcc " in #(
+     *\ -arch\ *\ -arch\ *) am__universal=true ;;
+     esac
+
+  for depmode in $am_compiler_list; do
+    # Setup a source with many dependencies, because some compilers
+    # like to wrap large dependency lists on column 80 (with \), and
+    # we should not choose a depcomp mode which is confused by this.
+    #
+    # We need to recreate these files for each test, as the compiler may
+    # overwrite some of them when testing with obscure command lines.
+    # This happens at least with the AIX C compiler.
+    : > sub/conftest.c
+    for i in 1 2 3 4 5 6; do
+      echo '#include "conftst'$i'.h"' >> sub/conftest.c
+      # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+      # Solaris 8's {/usr,}/bin/sh.
+      touch sub/conftst$i.h
+    done
+    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+    # We check with `-c' and `-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle `-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs
+    am__obj=sub/conftest.${OBJEXT-o}
+    am__minus_obj="-o $am__obj"
+    case $depmode in
+    gcc)
+      # This depmode causes a compiler race in universal mode.
+      test "$am__universal" = false || continue
+      ;;
+    nosideeffect)
+      # after this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested
+      if test "x$enable_dependency_tracking" = xyes; then
+	continue
+      else
+	break
+      fi
+      ;;
+    msvisualcpp | msvcmsys)
+      # This compiler won't grok `-c -o', but also, the minuso test has
+      # not run yet.  These depmodes are late enough in the game, and
+      # so weak that their functioning should not be impacted.
+      am__obj=conftest.${OBJEXT-o}
+      am__minus_obj=
+      ;;
+    none) break ;;
+    esac
+    if depmode=$depmode \
+       source=sub/conftest.c object=$am__obj \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+         >/dev/null 2>conftest.err &&
+       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_CC_dependencies_compiler_type=$depmode
+        break
+      fi
+    fi
+  done
+
+  cd ..
+  rm -rf conftest.dir
+else
+  am_cv_CC_dependencies_compiler_type=none
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CC_dependencies_compiler_type" >&5
+$as_echo "$am_cv_CC_dependencies_compiler_type" >&6; }
+CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
+
+ if
+  test "x$enable_dependency_tracking" != xno \
+  && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
+  am__fastdepCC_TRUE=
+  am__fastdepCC_FALSE='#'
+else
+  am__fastdepCC_TRUE='#'
+  am__fastdepCC_FALSE=
+fi
+
+
+# By default we simply use the C compiler to build assembly code.
+
+test "${CCAS+set}" = set || CCAS=$CC
+test "${CCASFLAGS+set}" = set || CCASFLAGS=$CFLAGS
+
+
+
+depcc="$CCAS"   am_compiler_list=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+$as_echo_n "checking dependency style of $depcc... " >&6; }
+if test "${am_cv_CCAS_dependencies_compiler_type+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
+  # making bogus files that we don't know about and never remove.  For
+  # instance it was reported that on HP-UX the gcc test will end up
+  # making a dummy file named `D' -- because `-MD' means `put the output
+  # in D'.
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$am_depcomp" conftest.dir
+  cd conftest.dir
+  # We will build objects and dependencies in a subdirectory because
+  # it helps to detect inapplicable dependency modes.  For instance
+  # both Tru64's cc and ICC support -MD to output dependencies as a
+  # side effect of compilation, but ICC will put the dependencies in
+  # the current directory while Tru64 will put them in the object
+  # directory.
+  mkdir sub
+
+  am_cv_CCAS_dependencies_compiler_type=none
+  if test "$am_compiler_list" = ""; then
+     am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+  fi
+  am__universal=false
+
+
+  for depmode in $am_compiler_list; do
+    # Setup a source with many dependencies, because some compilers
+    # like to wrap large dependency lists on column 80 (with \), and
+    # we should not choose a depcomp mode which is confused by this.
+    #
+    # We need to recreate these files for each test, as the compiler may
+    # overwrite some of them when testing with obscure command lines.
+    # This happens at least with the AIX C compiler.
+    : > sub/conftest.c
+    for i in 1 2 3 4 5 6; do
+      echo '#include "conftst'$i'.h"' >> sub/conftest.c
+      # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+      # Solaris 8's {/usr,}/bin/sh.
+      touch sub/conftst$i.h
+    done
+    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+    # We check with `-c' and `-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle `-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs
+    am__obj=sub/conftest.${OBJEXT-o}
+    am__minus_obj="-o $am__obj"
+    case $depmode in
+    gcc)
+      # This depmode causes a compiler race in universal mode.
+      test "$am__universal" = false || continue
+      ;;
+    nosideeffect)
+      # after this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested
+      if test "x$enable_dependency_tracking" = xyes; then
+	continue
+      else
+	break
+      fi
+      ;;
+    msvisualcpp | msvcmsys)
+      # This compiler won't grok `-c -o', but also, the minuso test has
+      # not run yet.  These depmodes are late enough in the game, and
+      # so weak that their functioning should not be impacted.
+      am__obj=conftest.${OBJEXT-o}
+      am__minus_obj=
+      ;;
+    none) break ;;
+    esac
+    if depmode=$depmode \
+       source=sub/conftest.c object=$am__obj \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+         >/dev/null 2>conftest.err &&
+       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_CCAS_dependencies_compiler_type=$depmode
+        break
+      fi
+    fi
+  done
+
+  cd ..
+  rm -rf conftest.dir
+else
+  am_cv_CCAS_dependencies_compiler_type=none
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CCAS_dependencies_compiler_type" >&5
+$as_echo "$am_cv_CCAS_dependencies_compiler_type" >&6; }
+CCASDEPMODE=depmode=$am_cv_CCAS_dependencies_compiler_type
+
+ if
+  test "x$enable_dependency_tracking" != xno \
+  && test "$am_cv_CCAS_dependencies_compiler_type" = gcc3; then
+  am__fastdepCCAS_TRUE=
+  am__fastdepCCAS_FALSE='#'
+else
+  am__fastdepCCAS_TRUE='#'
+  am__fastdepCCAS_FALSE=
+fi
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
 esac
-# Now try BSD make style include.
-if test "$am__include" = "#"; then
-   echo '.include "confinc"' > confmf
-   case `$am_make -s -f confmf 2> /dev/null` in #(
-   *the\ am__doit\ target*)
-     am__include=.include
-     am__quote="\""
-     _am_result=BSD
-     ;;
-   esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
 fi
 
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $_am_result" >&5
-$as_echo "$_am_result" >&6; }
-rm -f confinc confmf
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
 
-# Check whether --enable-dependency-tracking was given.
-if test "${enable_dependency_tracking+set}" = set; then :
-  enableval=$enable_dependency_tracking;
+
+  fi
 fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
 
-if test "x$enable_dependency_tracking" != xno; then
-  am_depcomp="$ac_aux_dir/depcomp"
-  AMDEPBACKSLASH='\'
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
 fi
- if test "x$enable_dependency_tracking" != xno; then
-  AMDEP_TRUE=
-  AMDEP_FALSE='#'
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
 else
-  AMDEP_TRUE='#'
-  AMDEP_FALSE=
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
 fi
 
 
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error "no acceptable C compiler found in \$PATH
+See \`config.log' for more details." "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if test "${ac_cv_c_compiler_gnu+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if test "${ac_cv_prog_cc_g+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if test "${ac_cv_prog_cc_c89+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 depcc="$CC"   am_compiler_list=
 
@@ -5486,6 +6294,14 @@ if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
   as_fn_error "conditional \"am__fastdepCC\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${am__fastdepCCAS_TRUE}" && test -z "${am__fastdepCCAS_FALSE}"; then
+  as_fn_error "conditional \"am__fastdepCCAS\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
+  as_fn_error "conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${am__fastdepCXX_TRUE}" && test -z "${am__fastdepCXX_FALSE}"; then
   as_fn_error "conditional \"am__fastdepCXX\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
diff --git a/configure.ac b/configure.ac
index 7c7a158a..84295520 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,6 +40,7 @@ AC_CANONICAL_HOST
 AM_INIT_AUTOMAKE(subdir-objects tar-ustar 1.11.1)
 AM_CONFIG_HEADER(src/config.h)
 
+AM_PROG_AS
 AC_PROG_CC
 AM_PROG_CC_C_O
 AC_PROG_CPP
diff --git a/src/client/linux/handler/exception_handler.cc b/src/client/linux/handler/exception_handler.cc
index 4a5932c1..27ac1544 100644
--- a/src/client/linux/handler/exception_handler.cc
+++ b/src/client/linux/handler/exception_handler.cc
@@ -324,16 +324,11 @@ bool ExceptionHandler::HandleSignal(int sig, siginfo_t* info, void* uc) {
 // This is a public interface to HandleSignal that allows the client to
 // generate a crash dump. This function may run in a compromised context.
 bool ExceptionHandler::SimulateSignalDelivery(int sig) {
-#ifdef __ANDROID__
-  // Android doesn't provide getcontext().
-  return false;
-#else
   siginfo_t siginfo;
   my_memset(&siginfo, 0, sizeof(siginfo_t));
   struct ucontext context;
   getcontext(&context);
   return HandleSignal(sig, &siginfo, &context);
-#endif
 }
 
 // This function may run in a compromised context: see the top of the file.
@@ -457,7 +452,6 @@ bool ExceptionHandler::WriteMinidump(const string& dump_path,
 }
 
 bool ExceptionHandler::WriteMinidump() {
-#if !defined(__ARM_EABI__) && !defined(__ANDROID__)
   if (!IsOutOfProcess() && !minidump_descriptor_.IsFD()) {
     // Update the path of the minidump so that this can be called multiple times
     // and new files are created for each minidump.  This is done before the
@@ -478,14 +472,14 @@ bool ExceptionHandler::WriteMinidump() {
   int getcontext_result = getcontext(&context.context);
   if (getcontext_result)
     return false;
+#if !defined(__ARM_EABI__)
+  // FPU state is not part of ARM EABI ucontext_t.
   memcpy(&context.float_state, context.context.uc_mcontext.fpregs,
          sizeof(context.float_state));
+#endif
   context.tid = sys_gettid();
 
   return GenerateDump(&context);
-#else
-  return false;
-#endif  // !defined(__ARM_EABI__) && !defined(__ANDROID__)
 }
 
 void ExceptionHandler::AddMappingInfo(const string& name,
diff --git a/src/common/android/breakpad_getcontext.S b/src/common/android/breakpad_getcontext.S
new file mode 100644
index 00000000..13ccd46b
--- /dev/null
+++ b/src/common/android/breakpad_getcontext.S
@@ -0,0 +1,145 @@
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// A minimalistic implementation of getcontext() to be used by
+// Google Breakpad on Android.
+
+#include "common/android/ucontext_constants.h"
+
+/* int getcontext (ucontext_t *ucp) */
+
+#ifdef __arm__
+
+  .text
+  .global breakpad_getcontext
+  .hidden breakpad_getcontext
+  .type breakpad_getcontext, #function
+  .align 0
+  .fnstart
+breakpad_getcontext:
+
+  /* First, save r4-r11 */
+  add   r1, r0, #(MCONTEXT_GREGS_OFFSET + 4*4)
+  stm   r1, {r4-r11}
+
+  /* r12 is a scratch register, don't save it */
+
+  /* Save sp and lr explicitely. */
+  /* - sp can't be stored with stmia in Thumb-2 */
+  /* - STM instructions that store sp and pc are deprecated in ARM */
+  str   sp, [r0, #(MCONTEXT_GREGS_OFFSET + 13*4)]
+  str   lr, [r0, #(MCONTEXT_GREGS_OFFSET + 14*4)]
+
+  /* Save the caller's address in 'pc' */
+  str   lr, [r0, #(MCONTEXT_GREGS_OFFSET + 15*4)]
+
+  /* Save ucontext_t* pointer accross next call */
+  mov   r4, r0
+
+  /* Call sigprocmask(SIG_BLOCK, NULL, &(ucontext->uc_sigmask)) */
+  mov   r0, #0  /* SIG_BLOCK */
+  mov   r1, #0  /* NULL */
+  add   r2, r4, #UCONTEXT_SIGMASK_OFFSET
+  bl    sigprocmask(PLT)
+
+  /* Intentionally do not save the FPU state here. This is because on
+   * Linux/ARM, one should instead use ptrace(PTRACE_GETFPREGS) or
+   * ptrace(PTRACE_GETVFPREGS) to get it.
+   *
+   * Note that a real implementation of getcontext() would need to save
+   * this here to allow setcontext()/swapcontext() to work correctly.
+   */
+
+  /* Restore the values of r4 and lr */
+  mov   r0, r4
+  ldr   lr, [r0, #(MCONTEXT_GREGS_OFFSET + 14*4)]
+  ldr   r4, [r0, #(MCONTEXT_GREGS_OFFSET +  4*4)]
+
+  /* Return 0 */
+  mov   r0, #0
+  bx    lr
+
+  .fnend
+  .size breakpad_getcontext, . - breakpad_getcontext
+
+#elif defined(__i386__)
+
+  .text
+  .global breakpad_getcontext
+  .hidden breakpad_getcontext
+  .align 4
+  .type breakpad_getcontext, @function
+
+breakpad_getcontext:
+
+  movl 4(%esp), %eax   /* eax = uc */
+
+  /* Save register values */
+  movl %ecx, MCONTEXT_ECX_OFFSET(%eax)
+  movl %edx, MCONTEXT_EDX_OFFSET(%eax)
+  movl %ebx, MCONTEXT_EBX_OFFSET(%eax)
+  movl %edi, MCONTEXT_EDI_OFFSET(%eax)
+  movl %esi, MCONTEXT_ESI_OFFSET(%eax)
+  movl %ebp, MCONTEXT_EBP_OFFSET(%eax)
+
+  movl (%esp), %edx   /* return address */
+  lea  4(%esp), %ecx  /* exclude return address from stack */
+  mov  %edx, MCONTEXT_EIP_OFFSET(%eax)
+  mov  %ecx, MCONTEXT_ESP_OFFSET(%eax)
+
+  xorl %ecx, %ecx
+  movw %fs, %cx
+  mov  %ecx, MCONTEXT_FS_OFFSET(%eax)
+
+  movl $0, MCONTEXT_EAX_OFFSET(%eax)
+
+  /* Save floating point state to fpregstate, then update
+   * the fpregs pointer to point to it */
+  leal UCONTEXT_FPREGS_MEM_OFFSET(%eax), %ecx
+  fnstenv (%ecx)
+  fldenv  (%ecx)
+  mov %ecx, UCONTEXT_FPREGS_OFFSET(%eax)
+
+  /* Save signal mask: sigprocmask(SIGBLOCK, NULL, &uc->uc_sigmask) */
+  leal UCONTEXT_SIGMASK_OFFSET(%eax), %edx
+  xorl %ecx, %ecx
+  push %edx   /* &uc->uc_sigmask */
+  push %ecx   /* NULL */
+  push %ecx   /* SIGBLOCK == 0 on i386 */
+  call sigprocmask@PLT
+  addl $12, %esp
+
+  movl $0, %eax
+  ret
+
+  .size breakpad_getcontext, . - breakpad_getcontext
+
+#else
+#error "This file has not been ported for your CPU!"
+#endif
diff --git a/src/common/android/breakpad_getcontext_unittest.cc b/src/common/android/breakpad_getcontext_unittest.cc
new file mode 100644
index 00000000..004390c3
--- /dev/null
+++ b/src/common/android/breakpad_getcontext_unittest.cc
@@ -0,0 +1,76 @@
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <sys/ucontext.h>
+
+#include "breakpad_googletest_includes.h"
+#include "common/android/ucontext_constants.h"
+
+TEST(AndroidUContext, GRegsOffset) {
+#ifdef __arm__
+  // There is no gregs[] array on ARM, so compare to the offset of
+  // first register fields, since they're stored in order.
+  ASSERT_EQ(MCONTEXT_GREGS_OFFSET, offsetof(ucontext_t,uc_mcontext.arm_r0));
+#elif defined(__i386__)
+  ASSERT_EQ(MCONTEXT_GREGS_OFFSET, offsetof(ucontext_t,uc_mcontext.gregs));
+#define CHECK_REG(x) \
+  ASSERT_EQ(MCONTEXT_##x##_OFFSET, \
+            offsetof(ucontext_t,uc_mcontext.gregs[REG_##x]))
+  CHECK_REG(GS);
+  CHECK_REG(FS);
+  CHECK_REG(ES);
+  CHECK_REG(DS);
+  CHECK_REG(EDI);
+  CHECK_REG(ESI);
+  CHECK_REG(EBP);
+  CHECK_REG(ESP);
+  CHECK_REG(EBX);
+  CHECK_REG(EDX);
+  CHECK_REG(ECX);
+  CHECK_REG(EAX);
+  CHECK_REG(TRAPNO);
+  CHECK_REG(ERR);
+  CHECK_REG(EIP);
+  CHECK_REG(CS);
+  CHECK_REG(EFL);
+  CHECK_REG(UESP);
+  CHECK_REG(SS);
+
+  ASSERT_EQ(UCONTEXT_FPREGS_OFFSET, offsetof(ucontext_t,uc_mcontext.fpregs));
+
+  ASSERT_EQ(UCONTEXT_FPREGS_MEM_OFFSET,
+            offsetof(ucontext_t,__fpregs_mem));
+#else
+  ASSERT_EQ(MCONTEXT_GREGS_OFFSET, offsetof(ucontext_t,uc_mcontext.gregs));
+#endif
+}
+
+TEST(AndroidUContext, SigmakOffset) {
+  ASSERT_EQ(UCONTEXT_SIGMASK_OFFSET, offsetof(ucontext_t,uc_sigmask));
+}
diff --git a/src/common/android/include/sys/ucontext.h b/src/common/android/include/sys/ucontext.h
index 7f0eb5a3..4a4e77c1 100644
--- a/src/common/android/include/sys/ucontext.h
+++ b/src/common/android/include/sys/ucontext.h
@@ -50,11 +50,15 @@ extern "C" {
 #include <asm/sigcontext.h>
 typedef struct sigcontext mcontext_t;
 
+// The ARM kernel uses a 64-bit signal mask.
+typedef uint32_t  kernel_sigmask_t[2];
+
 typedef struct ucontext {
   uint32_t uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   mcontext_t uc_mcontext;
+  kernel_sigmask_t uc_sigmask;
   // Other fields are not used by Google Breakpad. Don't define them.
 } ucontext_t;
 
@@ -110,12 +114,16 @@ enum {
   REG_SS,
 };
 
+// The i386 kernel uses a 64-bit signal mask.
+typedef uint32_t kernel_sigmask_t[2];
+
 typedef struct ucontext {
   uint32_t uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   mcontext_t uc_mcontext;
-  // Other fields are not used by Google Breakpad. Don't define them.
+  kernel_sigmask_t uc_sigmask;
+  struct _libc_fpstate __fpregs_mem;
 } ucontext_t;
 
 #elif defined(__mips__)
@@ -142,11 +150,15 @@ typedef struct {
   uint32_t lo3;
 } mcontext_t;
 
+// The MIPS kernel uses a 128-bit signal mask.
+typedef uint32_t kernel_sigmask_t[4];
+
 typedef struct ucontext {
   uint32_t uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   mcontext_t uc_mcontext;
+  kernel_sigmask_t uc_sigmask;
   // Other fields are not used by Google Breakpad. Don't define them.
 } ucontext_t;
 
diff --git a/src/common/android/include/ucontext.h b/src/common/android/include/ucontext.h
index 6608e063..29db8ade 100644
--- a/src/common/android/include/ucontext.h
+++ b/src/common/android/include/ucontext.h
@@ -30,12 +30,27 @@
 #ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_UCONTEXT_H
 #define GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_UCONTEXT_H
 
+#include <sys/cdefs.h>
+
+#ifdef __BIONIC_UCONTEXT_H
+#include <ucontext.h>
+#else
+
 #include <sys/ucontext.h>
 
-// TODO: Provide a portable implementation of getcontext() then
-//        update ExceptionHandler::WriteMinidump() in
-//        src/client/linux/handler/exception_handler.cc to use it.
-//
-// extern int getcontext(ucontext_t* ucp);
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+// Provided by src/android/common/breakpad_getcontext.S
+int breakpad_getcontext(ucontext_t* ucp);
+
+#define getcontext(x)   breakpad_getcontext(x)
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // __BIONIC_UCONTEXT_H
 
 #endif  // GOOGLE_BREAKPAD_COMMON_ANDROID_INCLUDE_UCONTEXT_H
diff --git a/src/common/android/ucontext_constants.h b/src/common/android/ucontext_constants.h
new file mode 100644
index 00000000..9c7a6971
--- /dev/null
+++ b/src/common/android/ucontext_constants.h
@@ -0,0 +1,85 @@
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This header can be included either from a C, C++ or Assembly file.
+// Its purpose is to contain constants that must match the offsets of
+// various fields in ucontext_t.
+//
+// They should match the definitions from
+// src/common/android/include/sys/ucontext.h
+//
+// Used by src/common/android/breakpad_getcontext.S
+// Tested by src/common/android/testing/breakpad_getcontext_unittest.cc
+
+#ifndef GOOGLEBREAKPAD_COMMON_ANDROID_UCONTEXT_CONSTANTS_H
+#define GOOGLEBREAKPAD_COMMON_ANDROID_UCONTEXT_CONSTANTS_H
+
+#if defined(__arm__)
+
+#define  MCONTEXT_GREGS_OFFSET     32
+#define  UCONTEXT_SIGMASK_OFFSET   104
+
+#elif defined(__i386__)
+
+#define  MCONTEXT_GREGS_OFFSET     20
+#define  MCONTEXT_GS_OFFSET        (MCONTEXT_GREGS_OFFSET + 0*4)
+#define  MCONTEXT_FS_OFFSET        (MCONTEXT_GREGS_OFFSET + 1*4)
+#define  MCONTEXT_ES_OFFSET        (MCONTEXT_GREGS_OFFSET + 2*4)
+#define  MCONTEXT_DS_OFFSET        (MCONTEXT_GREGS_OFFSET + 3*4)
+#define  MCONTEXT_EDI_OFFSET       (MCONTEXT_GREGS_OFFSET + 4*4)
+#define  MCONTEXT_ESI_OFFSET       (MCONTEXT_GREGS_OFFSET + 5*4)
+#define  MCONTEXT_EBP_OFFSET       (MCONTEXT_GREGS_OFFSET + 6*4)
+#define  MCONTEXT_ESP_OFFSET       (MCONTEXT_GREGS_OFFSET + 7*4)
+#define  MCONTEXT_EBX_OFFSET       (MCONTEXT_GREGS_OFFSET + 8*4)
+#define  MCONTEXT_EDX_OFFSET       (MCONTEXT_GREGS_OFFSET + 9*4)
+#define  MCONTEXT_ECX_OFFSET       (MCONTEXT_GREGS_OFFSET + 10*4)
+#define  MCONTEXT_EAX_OFFSET       (MCONTEXT_GREGS_OFFSET + 11*4)
+#define  MCONTEXT_TRAPNO_OFFSET    (MCONTEXT_GREGS_OFFSET + 12*4)
+#define  MCONTEXT_ERR_OFFSET       (MCONTEXT_GREGS_OFFSET + 13*4)
+#define  MCONTEXT_EIP_OFFSET       (MCONTEXT_GREGS_OFFSET + 14*4)
+#define  MCONTEXT_CS_OFFSET        (MCONTEXT_GREGS_OFFSET + 15*4)
+#define  MCONTEXT_EFL_OFFSET       (MCONTEXT_GREGS_OFFSET + 16*4)
+#define  MCONTEXT_UESP_OFFSET      (MCONTEXT_GREGS_OFFSET + 17*4)
+#define  MCONTEXT_SS_OFFSET        (MCONTEXT_GREGS_OFFSET + 18*4)
+
+#define  UCONTEXT_SIGMASK_OFFSET   108
+
+#define  UCONTEXT_FPREGS_OFFSET       96
+#define  UCONTEXT_FPREGS_MEM_OFFSET   116
+
+#elif defined(__mips__)
+
+#define  MCONTEXT_GREGS_OFFSET     0
+#define  UCONTEXT_SIGMASK_OFFSET   0
+
+#else
+#error "This header has not been ported for your CPU"
+#endif
+
+#endif  // GOOGLEBREAKPAD_COMMON_ANDROID_UCONTEXT_CONSTANTS_H