diff options
Diffstat (limited to 'gcc-4.9/gcc/ada/init.c')
| -rw-r--r-- | gcc-4.9/gcc/ada/init.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/gcc-4.9/gcc/ada/init.c b/gcc-4.9/gcc/ada/init.c index c3824ab7e..48319d62f 100644 --- a/gcc-4.9/gcc/ada/init.c +++ b/gcc-4.9/gcc/ada/init.c @@ -556,9 +556,14 @@ __gnat_error_handler (int sig, siginfo_t *si ATTRIBUTE_UNUSED, void *ucontext) Raise_From_Signal_Handler (exception, msg); } -#if defined (i386) || defined (__x86_64__) || defined (__powerpc__) -/* This must be in keeping with System.OS_Interface.Alternate_Stack_Size. */ -char __gnat_alternate_stack[16 * 1024]; /* 2 * SIGSTKSZ */ +#ifndef __ia64__ +#define HAVE_GNAT_ALTERNATE_STACK 1 +/* This must be in keeping with System.OS_Interface.Alternate_Stack_Size. + It must be larger than MINSIGSTKSZ and hopefully near 2 * SIGSTKSZ. */ +# if 16 * 1024 < MINSIGSTKSZ +# error "__gnat_alternate_stack too small" +# endif +char __gnat_alternate_stack[16 * 1024]; #endif #ifdef __XENO__ @@ -612,7 +617,7 @@ __gnat_install_handler (void) sigaction (SIGBUS, &act, NULL); if (__gnat_get_interrupt_state (SIGSEGV) != 's') { -#if defined (i386) || defined (__x86_64__) || defined (__powerpc__) +#ifdef HAVE_GNAT_ALTERNATE_STACK /* Setup an alternate stack region for the handler execution so that stack overflows can be handled properly, avoiding a SEGV generation from stack usage by the handler itself. */ |