From 3f705dfdf85a6416f5f12e52b7610144a99cbedc Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Mon, 6 Apr 2015 23:11:06 -0700 Subject: x86, selftests: Add sigreturn selftest This is my sigreturn test, added mostly unchanged from its old home. It exercises the sigreturn(2) syscall, specifically focusing on its interactions with various IRET corner cases. It tests for correct behavior in several areas that were historically dangerously buggy. For example, it exercises espfix on kernels of both bitnesses under various conditions, and it contains testcases for several now-fixed bugs in IRET error handling. If you run it on older kernels without the fixes, your system will crash. It probably won't eat your data in the process. There is no released kernel on which the sigreturn_64 test will pass, but it passes on tip:x86/asm. I plan to switch to lib.mk for Linux 4.2. I'm not using the ksft_ helpers at all yet. I can do that later. Signed-off-by: Andy Lutomirski Acked-by: Shuah Khan Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Michael Ellerman Cc: Shuah Khan Cc: Steven Rostedt Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/89d10b76b92c7202d8123654dc8d36701c017b3d.1428386971.git.luto@kernel.org [ Fixed empty format string GCC build warning in trivial_32bit_program.c ] Signed-off-by: Ingo Molnar --- tools/testing/selftests/x86/Makefile | 48 ++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 tools/testing/selftests/x86/Makefile (limited to 'tools/testing/selftests/x86/Makefile') diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile new file mode 100644 index 000000000000..f0a7918178dd --- /dev/null +++ b/tools/testing/selftests/x86/Makefile @@ -0,0 +1,48 @@ +.PHONY: all all_32 all_64 check_build32 clean run_tests + +TARGETS_C_BOTHBITS := sigreturn + +BINARIES_32 := $(TARGETS_C_BOTHBITS:%=%_32) +BINARIES_64 := $(TARGETS_C_BOTHBITS:%=%_64) + +CFLAGS := -O2 -g -std=gnu99 -pthread -Wall + +UNAME_P := $(shell uname -p) + +# Always build 32-bit tests +all: all_32 + +# If we're on a 64-bit host, build 64-bit tests as well +ifeq ($(shell uname -p),x86_64) +all: all_64 +endif + +all_32: check_build32 $(BINARIES_32) + +all_64: $(BINARIES_64) + +clean: + $(RM) $(BINARIES_32) $(BINARIES_64) + +run_tests: + ./run_x86_tests.sh + +$(TARGETS_C_BOTHBITS:%=%_32): %_32: %.c + $(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl + +$(TARGETS_C_BOTHBITS:%=%_64): %_64: %.c + $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl + +check_build32: + @if ! $(CC) -m32 -o /dev/null trivial_32bit_program.c; then \ + echo "Warning: you seem to have a broken 32-bit build" 2>&1; \ + echo "environment. If you are using a Debian-like"; \ + echo " distribution, try:"; \ + echo ""; \ + echo " apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \ + echo ""; \ + echo "If you are using a Fedora-like distribution, try:"; \ + echo ""; \ + echo " yum install glibc-devel.*i686"; \ + exit 1; \ + fi -- cgit