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authorFlorian Weimer <fweimer@redhat.com>2018-05-02 14:10:32 +0200
committerShuah Khan (Samsung OSG) <shuah@kernel.org>2018-05-30 15:21:51 -0600
commit0dd3a6945f5dd4864db809ff015a493d80c65898 (patch)
treeeaf6acaf25a2a6de1527e92ceff5841306d3f38d /tools/testing/selftests/x86
parentselftests: filesystems: fix spelling mistake: "desciptor" -> "descriptor" (diff)
downloadwireguard-linux-0dd3a6945f5dd4864db809ff015a493d80c65898.tar.xz
wireguard-linux-0dd3a6945f5dd4864db809ff015a493d80c65898.zip
selftests/x86: Detect -no-pie availability
Some toolchains need -no-pie to build all tests, others do not support the -no-pie flag at all. Therefore, add another test for the availability of the flag. This amends commit 3346a6a4e5ba8c040360f753b26938cec31a4bdc ("selftests: x86: sysret_ss_attrs doesn't build on a PIE build"). Signed-off-by: Florian Weimer <fweimer@redhat.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Diffstat (limited to 'tools/testing/selftests/x86')
-rw-r--r--tools/testing/selftests/x86/Makefile8
-rw-r--r--tools/testing/selftests/x86/trivial_program.c10
2 files changed, 17 insertions, 1 deletions
diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile
index 39f66bc29b82..186520198de7 100644
--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -8,6 +8,7 @@ include ../lib.mk
UNAME_M := $(shell uname -m)
CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)
CAN_BUILD_X86_64 := $(shell ./check_cc.sh $(CC) trivial_64bit_program.c)
+CAN_BUILD_WITH_NOPIE := $(shell ./check_cc.sh $(CC) trivial_program.c -no-pie)
TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \
check_initial_reg_state sigreturn iopl mpx-mini-test ioperm \
@@ -31,7 +32,12 @@ BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)
BINARIES_32 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_32))
BINARIES_64 := $(patsubst %,$(OUTPUT)/%,$(BINARIES_64))
-CFLAGS := -O2 -g -std=gnu99 -pthread -Wall -no-pie
+CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
+
+# call32_from_64 in thunks.S uses absolute addresses.
+ifeq ($(CAN_BUILD_WITH_NOPIE),1)
+CFLAGS += -no-pie
+endif
define gen-target-rule-32
$(1) $(1)_32: $(OUTPUT)/$(1)_32
diff --git a/tools/testing/selftests/x86/trivial_program.c b/tools/testing/selftests/x86/trivial_program.c
new file mode 100644
index 000000000000..46a447163b93
--- /dev/null
+++ b/tools/testing/selftests/x86/trivial_program.c
@@ -0,0 +1,10 @@
+/* Trivial program to check that compilation with certain flags is working. */
+
+#include <stdio.h>
+
+int
+main(void)
+{
+ puts("");
+ return 0;
+}