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| author | dodji <dodji@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-11-12 15:51:34 +0000 |
|---|---|---|
| committer | dodji <dodji@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-11-12 15:51:34 +0000 |
| commit | 7ad5fd20643c17314388b3f88e6b97723fd145f1 (patch) | |
| tree | 4f0f7a2a85c05539f589338ab08d8fab607d18d7 /gcc/asan.h | |
| parent | b92cccf41deffcfc22bb55557399efe1acb60c60 (diff) | |
| download | gcc-7ad5fd20643c17314388b3f88e6b97723fd145f1.tar.gz | |
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: svn+ssh://gcc.gnu.org/svn/gcc/trunk@193433 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/asan.h')
| -rw-r--r-- | gcc/asan.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/asan.h b/gcc/asan.h index 590cf359bd2..699820b852c 100644 --- a/gcc/asan.h +++ b/gcc/asan.h @@ -1,5 +1,5 @@ /* AddressSanitizer, a fast memory error detector. - Copyright (C) 2011 Free Software Foundation, Inc. + Copyright (C) 2011, 2012 Free Software Foundation, Inc. Contributed by Kostya Serebryany <kcc@google.com> This file is part of GCC. @@ -23,4 +23,8 @@ along with GCC; see the file COPYING3. If not see extern void asan_finish_file(void); +/* Shadow memory is found at + (address >> ASAN_SHADOW_SHIFT) | targetm.asan_shadow_offset (). */ +#define ASAN_SHADOW_SHIFT 3 + #endif /* TREE_ASAN */ |