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| author | Jakub Jelinek <jakub@redhat.com> | 2012-11-12 16:51:34 +0100 |
|---|---|---|
| committer | Dodji Seketeli <dodji@gcc.gnu.org> | 2012-11-12 16:51:34 +0100 |
| commit | dfe06d3e7f7719d2fc8ef7b7c7ca88e7277e7593 (patch) | |
| tree | 4f0f7a2a85c05539f589338ab08d8fab607d18d7 /gcc/asan.h | |
| parent | 37d6f666cae62d9d44c5aef4b2185e43635d5091 (diff) | |
| download | gcc-dfe06d3e7f7719d2fc8ef7b7c7ca88e7277e7593.zip gcc-dfe06d3e7f7719d2fc8ef7b7c7ca88e7277e7593.tar.gz gcc-dfe06d3e7f7719d2fc8ef7b7c7ca88e7277e7593.tar.bz2 | |
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.
From-SVN: r193433
Diffstat (limited to 'gcc/asan.h')
| -rw-r--r-- | gcc/asan.h | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -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 */ |