diff options
| author | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-07-08 12:27:01 +0000 |
|---|---|---|
| committer | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-07-08 12:27:01 +0000 |
| commit | 7505c173f820b85e8436939b45beb1735f7e9d60 (patch) | |
| tree | ca5b252d0f945589fbef65bd7cd88cbe03b560bb /gcc/config/i386/linux.h | |
| parent | 16952c2cac969ef045f63fe18764b4f1d719eac5 (diff) | |
| download | gcc-7505c173f820b85e8436939b45beb1735f7e9d60.tar.gz | |
* config/i386/cygming.h (STACK_CHECK_STATIC_BUILTIN): Define to 1.
* config/i386/freebsd.h (STACK_CHECK_STATIC_BUILTIN): Likewise.
* config/i386/linux.h (STACK_CHECK_STATIC_BUILTIN): Likewise.
* config/i386/linux64.h (STACK_CHECK_STATIC_BUILTIN): Likewise.
* config/i386/sol2.h (STACK_CHECK_STATIC_BUILTIN): Likewise.
* config/i386/i386.c (ix86_gen_adjust_stack_and_probe): New variable.
(ix86_gen_probe_stack_range): Likewise.
(override_options): Set them.
(ix86_target_stack_probe): New function.
(ix86_compute_frame_layout): Force use of push instructions to
save registers if stack checking with probes is enabled.
(get_scratch_register_on_entry): New function.
(release_scratch_register_on_entry): Likewise.
(ix86_adjust_stack_and_probe): Likewise.
(output_adjust_stack_and_probe): Likewise.
(ix86_emit_probe_stack_range): Likewise.
(output_probe_stack_range): Likewise.
(ix86_expand_prologue): Emit stack checking code if static built-in
stack checking is enabled.
Test ix86_target_stack_probe instead of TARGET_STACK_PROBE.
* config/i386/i386-protos.h (ix86_target_stack_probe): Declare.
(output_adjust_stack_and_probe): Likewise.
(output_probe_stack_range): Likewise.
* config/i386/i386.md (UNSPECV_PROBE_STACK_RANGE): New constant.
(allocate_stack_worker_32): Test ix86_target_stack_probe instead of
TARGET_STACK_PROBE.
(allocate_stack_worker_64): Likewise.
(allocate_stack): Likewise.
(adjust_stack_and_probe): New insn.
(probe_stack_range): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@161952 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/config/i386/linux.h')
| -rw-r--r-- | gcc/config/i386/linux.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h index 2a31880e6d6..81dfd1e2509 100644 --- a/gcc/config/i386/linux.h +++ b/gcc/config/i386/linux.h @@ -209,6 +209,9 @@ along with GCC; see the file COPYING3. If not see /* The stack pointer needs to be moved while checking the stack. */ #define STACK_CHECK_MOVING_SP 1 +/* Static stack checking is supported by means of probes. */ +#define STACK_CHECK_STATIC_BUILTIN 1 + /* This macro may be overridden in i386/k*bsd-gnu.h. */ #define REG_NAME(reg) reg |