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| author |   Andy Lutomirski <luto@kernel.org> | 2016-01-28 15:11:20 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-01-29 09:46:37 +0100 |
| commit | e21d50f3864e2a8995f5d2a41dea3f0fa07758b4 (patch) | |
| tree | 5d4f98eab7691d014ca44ee00b6a679a2f733c3e /tools/testing/selftests/x86/Makefile | |
| parent | selftests/x86: Extend Makefile to allow 64-bit-only tests (diff) | |
| download | linux-dev-e21d50f3864e2a8995f5d2a41dea3f0fa07758b4.tar.xz linux-dev-e21d50f3864e2a8995f5d2a41dea3f0fa07758b4.zip | |
selftests/x86: Add check_initial_reg_state()
This checks that ELF binaries are started with an appropriately
blank register state.
( There's currently a nasty special case in the entry asm to
arrange for this. I'm planning on removing the special case,
and this will help make sure I don't break it. )
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/ef54f8d066b30a3eb36bbf26300eebb242185700.1454022279.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/x86/Makefile')
| -rw-r--r-- | tools/testing/selftests/x86/Makefile | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile index 9c81f263a396..df4f767f48da 100644 --- a/tools/testing/selftests/x86/Makefile +++ b/tools/testing/selftests/x86/Makefile @@ -4,7 +4,8 @@ include ../lib.mk .PHONY: all all_32 all_64 warn_32bit_failure clean -TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt ptrace_syscall +TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt ptrace_syscall \ + check_initial_reg_state TARGETS_C_32BIT_ONLY := entry_from_vm86 syscall_arg_fault sigreturn test_syscall_vdso unwind_vdso \ test_FCMOV test_FCOMI test_FISTTP \ ldt_gdt \ @@ -66,3 +67,9 @@ endif sysret_ss_attrs_64: thunks.S ptrace_syscall_32: raw_syscall_helper_32.S test_syscall_vdso_32: thunks_32.S + +# check_initial_reg_state is special: it needs a custom entry, and it +# needs to be static so that its interpreter doesn't destroy its initial +# state. +check_initial_reg_state_32: CFLAGS += -Wl,-ereal_start -static +check_initial_reg_state_64: CFLAGS += -Wl,-ereal_start -static |