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| author | Richard Henderson <rth@cygnus.com> | 1998-06-30 20:56:35 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 1998-06-30 20:56:35 -0700 |
| commit | c714f03d304611def7fd70e3b623e1969d8ac947 (patch) | |
| tree | 593c483d2d5c85a0bb76c9322f19bc0ad855aebb /gcc/config/alpha/osf.h | |
| parent | 03369c9399903579d7a4a6366fea699a06b4ee41 (diff) | |
| download | gcc-c714f03d304611def7fd70e3b623e1969d8ac947.zip gcc-c714f03d304611def7fd70e3b623e1969d8ac947.tar.gz gcc-c714f03d304611def7fd70e3b623e1969d8ac947.tar.bz2 | |
alpha.c (alpha_initialize_trampoline): Take arguments describing the layout.
* alpha.c (alpha_initialize_trampoline): Take arguments describing
the layout. Use ptr_mode. Disable hint generation. Use gen_imb.
* alpha.h (INITIALIZE_TRAMPOLINE): Pass extra args to the init func.
(TRANSFER_FROM_TRAMPOLINE): Move ...
* alpha/osf.h: ... here.
* alpha/vms.h (INITIALIZE_TRAMPOLINE): Use alpha_initialize_trampoline.
(TRANSFER_FROM_TRAMPOLINE): Remove undef.
* alpha/win-nt.h: Likewise.
* alpha/vxworks.h: Likewise.
* alpha/linux.h: Revert gcc2 merge lossage.
From-SVN: r20864
Diffstat (limited to 'gcc/config/alpha/osf.h')
| -rw-r--r-- | gcc/config/alpha/osf.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/config/alpha/osf.h b/gcc/config/alpha/osf.h index 0af169c..1e8e505 100644 --- a/gcc/config/alpha/osf.h +++ b/gcc/config/alpha/osf.h @@ -108,3 +108,20 @@ Boston, MA 02111-1307, USA. */ #ifndef CROSS_COMPILE #define HAVE_STAMP_H 1 #endif + +/* Attempt to turn on access permissions for the stack. */ + +#define TRANSFER_FROM_TRAMPOLINE \ +void \ +__enable_execute_stack (addr) \ + void *addr; \ +{ \ + long size = getpagesize (); \ + long mask = ~(size-1); \ + char *page = (char *) (((long) addr) & mask); \ + char *end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \ + \ + /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \ + if (mprotect (page, end - page, 7) < 0) \ + perror ("mprotect of trampoline code"); \ +} |