diff options
Diffstat (limited to 'contrib/gcc/config/sparc/freebsd.h')
| -rw-r--r-- | contrib/gcc/config/sparc/freebsd.h | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/contrib/gcc/config/sparc/freebsd.h b/contrib/gcc/config/sparc/freebsd.h index 54b5f0a..59f0777 100644 --- a/contrib/gcc/config/sparc/freebsd.h +++ b/contrib/gcc/config/sparc/freebsd.h @@ -18,11 +18,13 @@ You should have received a copy of the GNU General Public License along with GNU CC; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ -/* FreeBSD needs's the platform name (sparc64) defined. */ +/* FreeBSD needs the platform name (sparc64) defined. + Emacs needs to know if the arch is 64 or 32-bits. */ #undef CPP_CPU64_DEFAULT_SPEC -#define CPP_CPU64_DEFAULT_SPEC "-D__sparc64__ -D__sparc_v9__" +#define CPP_CPU64_DEFAULT_SPEC "-D__sparc64__ -D__sparc_v9__ -D__arch64__" +/* Because we include sparc/sysv4.h. */ #undef CPP_PREDEFINES #define CPP_PREDEFINES FBSD_CPP_PREDEFINES @@ -99,6 +101,31 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #undef SPARC_DEFAULT_CMODEL #define SPARC_DEFAULT_CMODEL CM_MEDLOW +#define TRANSFER_FROM_TRAMPOLINE \ + static int need_enable_exec_stack; \ + static void check_enabling(void) __attribute__ ((constructor)); \ + static void check_enabling(void) \ + { \ + extern int sysctlbyname(const char *, void *, size_t *, void *, size_t);\ + int prot = 0; \ + size_t len = sizeof(prot); \ + \ + sysctlbyname ("kern.stackprot", &prot, &len, NULL, 0); \ + if (prot != 7) \ + need_enable_exec_stack = 1; \ + } \ + extern void __enable_execute_stack (void *); \ + void __enable_execute_stack (void *addr) \ + { \ + if (!need_enable_exec_stack) \ + return; \ + else { \ + /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \ + if (mprotect (addr, TRAMPOLINE_SIZE, 7) < 0) \ + perror ("mprotect of trampoline code"); \ + } \ + } + /************************[ Assembler stuff ]********************************/ |
