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authorHeiko Carstens <heiko.carstens@de.ibm.com>2011-01-12 09:55:31 +0100
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-01-12 09:55:25 +0100
commitd2c9dfccbc3a449b9677772e7496e2656049d9f3 (patch)
treef62cf27ddee310af28244bcfbc8eb2e197ed629c /arch/s390/include/asm/elf.h
parent3351918282fd664e918a3175ddfae9b15656122e (diff)
downloadlinux-linaro-stable-d2c9dfccbc3a449b9677772e7496e2656049d9f3.tar.gz
[S390] Randomize PIEs
Randomize ELF_ET_DYN_BASE, which is used when loading position independent executables. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/elf.h')
-rw-r--r--arch/s390/include/asm/elf.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 457fb7c16236..10c029cfcc7d 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -161,7 +161,9 @@ extern unsigned int vdso_enabled;
use of this is to invoke "./ld.so someprog" to test out a new version of
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 (STACK_TOP / 3 * 2)
+
+extern unsigned long randomize_et_dyn(unsigned long base);
+#define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2))
/* This yields a mask that user programs can use to figure out what
instruction set this CPU supports. */