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authorAnton Blanchard <anton@samba.org>2009-02-22 01:50:07 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-02-23 15:53:21 +1100
commit501cb16d3cfdcca99ac26fe122079f2a43b046b8 (patch)
tree90feee70ffa3e15857908f842e5764649141270b /arch/powerpc/include
parent002b0ec73dd8b784004e5a013ad9f2fa6274af5a (diff)
downloadblackbird-op-linux-501cb16d3cfdcca99ac26fe122079f2a43b046b8.tar.gz
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powerpc: Randomise PIEs
Randomise ELF_ET_DYN_BASE, which is used when loading position independent executables. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/asm/elf.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
index 968b37f7a9f8..1a856b15226e 100644
--- a/arch/powerpc/include/asm/elf.h
+++ b/arch/powerpc/include/asm/elf.h
@@ -179,7 +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
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