| /* Copyright (C) 1999, 2010 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* This file contains a bit of information about the stack allocation |
| of the processor. */ |
| |
| #ifndef _STACKINFO_H |
| #define _STACKINFO_H 1 |
| |
| #include <elf.h> |
| |
| /* On PPC the stack grows down. */ |
| #define _STACK_GROWS_DOWN 1 |
| |
| #if __WORDSIZE == 64 |
| /* PPC64 doesn't need an executable stack and doesn't need PT_GNU_STACK |
| * to make the stack nonexecutable. */ |
| # define DEFAULT_STACK_PERMS (PF_R|PF_W) |
| #else |
| /* PF_X can be overridden if PT_GNU_STACK is present but is presumed absent. */ |
| # define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X) |
| #endif |
| |
| #endif /* stackinfo.h */ |
