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| author | Max Filippov <jcmvbkbc@gmail.com> | 2017-12-05 14:17:35 +0000 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gcc.gnu.org> | 2017-12-05 14:17:35 +0000 |
| commit | 8c9ee176a61d7591e666700e41af2aadb60b8f6a (patch) | |
| tree | 53a784a6fc435c9508d843f0ffc75296987e80c0 /gcc/config/xtensa | |
| parent | ac550b9a0e827dc155c2d38b24c527f47be191dc (diff) | |
| download | gcc-8c9ee176a61d7591e666700e41af2aadb60b8f6a.zip gcc-8c9ee176a61d7591e666700e41af2aadb60b8f6a.tar.gz gcc-8c9ee176a61d7591e666700e41af2aadb60b8f6a.tar.bz2 | |
gcc: xtensa: enable address sanitizer
gcc/
2017-12-05 Max Filippov <jcmvbkbc@gmail.com>
* config/xtensa/xtensa.c (xtensa_asan_shadow_offset): New
function.
(TARGET_ASAN_SHADOW_OFFSET): New macro definition.
* config/xtensa/xtensa.h (FRAME_GROWS_DOWNWARD): Set to 1 if
ASAN is enabled.
From-SVN: r255420
Diffstat (limited to 'gcc/config/xtensa')
| -rw-r--r-- | gcc/config/xtensa/xtensa.c | 12 | ||||
| -rw-r--r-- | gcc/config/xtensa/xtensa.h | 3 |
2 files changed, 14 insertions, 1 deletions
diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c index 1e73b2f..92b9a60 100644 --- a/gcc/config/xtensa/xtensa.c +++ b/gcc/config/xtensa/xtensa.c @@ -183,6 +183,7 @@ static bool xtensa_hard_regno_mode_ok (unsigned int, machine_mode); static bool xtensa_modes_tieable_p (machine_mode, machine_mode); static HOST_WIDE_INT xtensa_constant_alignment (const_tree, HOST_WIDE_INT); static HOST_WIDE_INT xtensa_starting_frame_offset (void); +static unsigned HOST_WIDE_INT xtensa_asan_shadow_offset (void); @@ -325,6 +326,9 @@ static HOST_WIDE_INT xtensa_starting_frame_offset (void); #undef TARGET_STARTING_FRAME_OFFSET #define TARGET_STARTING_FRAME_OFFSET xtensa_starting_frame_offset +#undef TARGET_ASAN_SHADOW_OFFSET +#define TARGET_ASAN_SHADOW_OFFSET xtensa_asan_shadow_offset + struct gcc_target targetm = TARGET_INITIALIZER; @@ -4413,4 +4417,12 @@ xtensa_starting_frame_offset (void) return crtl->outgoing_args_size; } +/* Implement TARGET_ASAN_SHADOW_OFFSET. */ + +static unsigned HOST_WIDE_INT +xtensa_asan_shadow_offset (void) +{ + return HOST_WIDE_INT_UC (0x10000000); +} + #include "gt-xtensa.h" diff --git a/gcc/config/xtensa/xtensa.h b/gcc/config/xtensa/xtensa.h index b4cf537..1602fae 100644 --- a/gcc/config/xtensa/xtensa.h +++ b/gcc/config/xtensa/xtensa.h @@ -430,7 +430,8 @@ enum reg_class #define STACK_GROWS_DOWNWARD 1 -#define FRAME_GROWS_DOWNWARD flag_stack_protect +#define FRAME_GROWS_DOWNWARD (flag_stack_protect \ + || (flag_sanitize & SANITIZE_ADDRESS) != 0) /* The ARG_POINTER and FRAME_POINTER are not real Xtensa registers, so they are eliminated to either the stack pointer or hard frame pointer. */ |