diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2012-11-12 15:51:34 +0000 |
|---|---|---|
| committer | Dodji Seketeli <dodji@redhat.com> | 2012-11-12 15:51:34 +0000 |
| commit | 4a6f89a1b89f60702ad7920b953af3d2e158469d (patch) | |
| tree | 4f0f7a2a85c05539f589338ab08d8fab607d18d7 /gcc/toplev.c | |
| parent | ebf03bf71c50d4261da2103d3f01a079b6ef0167 (diff) | |
Initial asan cleanups
This patch defines a new asan_shadow_offset target macro, instead of
having a mere macro in the asan.c file. It becomes thus cleaner to
define the target macro for targets that supports asan, namely x86 for
now. The ASAN_SHADOW_SHIFT (which, along with the asan_shadow_offset
constant, is used to compute the address of the shadow memory byte for
a given memory address) is defined in asan.h.
gcc/ChangeLog
* toplev.c (process_options): Warn and turn off
-faddress-sanitizer if not supported by target.
* asan.c: Include target.h.
(asan_scale, asan_offset_log_32, asan_offset_log_64,
asan_offset_log): Removed.
(build_check_stmt): Use ASAN_SHADOW_SHIFT and
targetm.asan_shadow_offset ().
(asan_instrument): Don't initialize asan_offset_log.
* asan.h (ASAN_SHADOW_SHIFT): Define.
* target.def (TARGET_ASAN_SHADOW_OFFSET): New hook.
* doc/tm.texi.in (TARGET_ASAN_SHADOW_OFFSET): Add it.
* doc/tm.texi: Regenerated.
* Makefile.in (asan.o): Depend on $(TARGET_H).
* config/i386/i386.c (ix86_asan_shadow_offset): New function.
(TARGET_ASAN_SHADOW_OFFSET): Define.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@193433 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index 3ca0736995e..d9dfb2a574e 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -1541,6 +1541,13 @@ process_options (void) flag_omit_frame_pointer = 0; } + /* Address Sanitizer needs porting to each target architecture. */ + if (flag_asan && targetm.asan_shadow_offset == NULL) + { + warning (0, "-faddress-sanitizer not supported for this target"); + flag_asan = 0; + } + /* Enable -Werror=coverage-mismatch when -Werror and -Wno-error have not been set. */ if (!global_options_set.x_warnings_are_errors |