diff options
| author | Matthew Dempsky <matthew@cvs.openbsd.org> | 2012-08-31 16:37:15 +0000 |
|---|---|---|
| committer | Matthew Dempsky <matthew@cvs.openbsd.org> | 2012-08-31 16:37:15 +0000 |
| commit | 9cdfb5ecc2f5f951169e9107c1fc0d71139695c7 (patch) | |
| tree | f20a69ffd28f2578f7ad8a5035b7795eda6b1fa6 /gnu | |
| parent | cddd383ba1a1488b3f8cb945f59c821821d57626 (diff) | |
Switch GCC to use __guard_local instead of __guard. This allows GCC
to emit -fstack-protector code that doesn't need GOT indirection for
accessing __guard.
Tested on amd64, i386, sparc64, hppa, loongson, and sgi (thanks lteo,
djm, sthen, todd, naddy, kettenis, phessler, jasper, and anyone else
that I'm missing who tested).
Diffstat (limited to 'gnu')
| -rw-r--r-- | gnu/gcc/gcc/targhooks.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gnu/gcc/gcc/targhooks.c b/gnu/gcc/gcc/targhooks.c index 8e34127fa82..802df49b2cd 100644 --- a/gnu/gcc/gcc/targhooks.c +++ b/gnu/gcc/gcc/targhooks.c @@ -372,7 +372,7 @@ default_stack_protect_guard (void) if (t == NULL) { - t = build_decl (VAR_DECL, get_identifier ("__guard"), ptr_type_node); + t = build_decl (VAR_DECL, get_identifier ("__guard_local"), ptr_type_node); TREE_STATIC (t) = 1; TREE_PUBLIC (t) = 1; DECL_EXTERNAL (t) = 1; @@ -380,6 +380,8 @@ default_stack_protect_guard (void) TREE_THIS_VOLATILE (t) = 1; DECL_ARTIFICIAL (t) = 1; DECL_IGNORED_P (t) = 1; + DECL_VISIBILITY (t) = VISIBILITY_HIDDEN; + DECL_VISIBILITY_SPECIFIED (t) = 1; stack_chk_guard_decl = t; } |