1 files changed, 11 insertions, 1 deletions

diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
index b5600ce6055e..1a856b15226e 100644
--- a/arch/powerpc/include/asm/elf.h
+++ b/arch/powerpc/include/asm/elf.h
@@ -8,6 +8,7 @@
 #endif
 
 #include <linux/types.h>
+
 #include <asm/ptrace.h>
 #include <asm/cputable.h>
 #include <asm/auxvec.h>
@@ -178,7 +179,8 @@ typedef elf_fpreg_t elf_vsrreghalf_t32[ELF_NVSRHALFREG];
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-#define ELF_ET_DYN_BASE         (0x20000000)
+extern unsigned long randomize_et_dyn(unsigned long base);
+#define ELF_ET_DYN_BASE         (randomize_et_dyn(0x20000000))
 
 /*
  * Our registers are always unsigned longs, whether we're a 32 bit
@@ -270,6 +272,14 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm,
                                        int uses_interp);
 #define VDSO_AUX_ENT(a,b) NEW_AUX_ENT(a,b);
 
+/* 1GB for 64bit, 8MB for 32bit */
+#define STACK_RND_MASK (is_32bit_task() ? \
+        (0x7ff >> (PAGE_SHIFT - 12)) : \
+        (0x3ffff >> (PAGE_SHIFT - 12)))
+
+extern unsigned long arch_randomize_brk(struct mm_struct *mm);
+#define arch_randomize_brk arch_randomize_brk
+
 #endif /* __KERNEL__ */
 
 /*