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| author | Svante Signell <svante.signell@gmail.com> | 2019-01-12 21:17:56 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-01-12 21:17:56 +0000 |
| commit | 8d5d3edddf70a8683c10e000817e8d2cd5b8c974 (patch) | |
| tree | c90c3f0c93d265c4af9559f27ad5863aea666791 | |
| parent | 865f11b6191458ebff136400e4b32c1adc7f575c (diff) | |
| download | gcc-8d5d3edddf70a8683c10e000817e8d2cd5b8c974.zip gcc-8d5d3edddf70a8683c10e000817e8d2cd5b8c974.tar.gz gcc-8d5d3edddf70a8683c10e000817e8d2cd5b8c974.tar.bz2 | |
gnu.h (TARGET_THREAD_SSP_OFFSET): Define.
* config/i386/gnu.h (TARGET_THREAD_SSP_OFFSET): Define.
(TARGET_CAN_SPLIT_STACK): Define.
(TARGET_THREAD_SPLIT_STACK_OFFSET): Define.
From-SVN: r267886
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/i386/gnu.h | 15 |
2 files changed, 15 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7126508..a2735a5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2019-01-12 Svante Signell <svante.signell@gmail.com> + + * config/i386/gnu.h (TARGET_THREAD_SSP_OFFSET): Define. + (TARGET_CAN_SPLIT_STACK): Define. + (TARGET_THREAD_SPLIT_STACK_OFFSET): Define. + 2019-01-05 Jan Hubicka <hubicka@ucw.cz> * params.def (inline-unit-growth): Set to 40. diff --git a/gcc/config/i386/gnu.h b/gcc/config/i386/gnu.h index 69d9e5f..9d1dcde 100644 --- a/gcc/config/i386/gnu.h +++ b/gcc/config/i386/gnu.h @@ -37,11 +37,14 @@ along with GCC. If not, see <http://www.gnu.org/licenses/>. #ifdef TARGET_LIBC_PROVIDES_SSP -/* Not supported yet. */ -# undef TARGET_THREAD_SSP_OFFSET - -/* Not supported yet. */ -# undef TARGET_CAN_SPLIT_STACK -# undef TARGET_THREAD_SPLIT_STACK_OFFSET +/* i386 glibc provides __stack_chk_guard in %gs:0x14. */ +#define TARGET_THREAD_SSP_OFFSET 0x14 +/* We only build the -fsplit-stack support in libgcc if the + assembler has full support for the CFI directives. */ +#if HAVE_GAS_CFI_PERSONALITY_DIRECTIVE +#define TARGET_CAN_SPLIT_STACK +#endif +/* We steal the last transactional memory word. */ +#define TARGET_THREAD_SPLIT_STACK_OFFSET 0x30 #endif |