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authorH. J. Lu <hjl.tools@gmail.com>2012-02-19 14:38:06 -0500
committerH. Peter Anvin <hpa@zytor.com>2012-02-20 15:52:06 -0500
commit1a21d4e095ef720abf81299000afc038206d571b (patch)
tree8d64feea71f41f785521f66fecbd29c16b0cf63a /arch/x86/vdso/vdsox32.lds.S
parent5fd92e65a68b813667bc8739f5fa463e5bfcd66d (diff)
x32: Add x32 VDSO support
Add support for the x32 VDSO. The x32 VDSO takes advantage of the similarity between the x86-64 and the x32 ABIs to contain the same content, only the container is different, as the x32 VDSO obviously is an x32 shared object. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/vdso/vdsox32.lds.S')
-rw-r--r--arch/x86/vdso/vdsox32.lds.S32
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/x86/vdso/vdsox32.lds.S b/arch/x86/vdso/vdsox32.lds.S
new file mode 100644
index 000000000000..373ca9a02a53
--- /dev/null
+++ b/arch/x86/vdso/vdsox32.lds.S
@@ -0,0 +1,32 @@
1/*
2 * Linker script for x32 vDSO.
3 * We #include the file to define the layout details.
4 * Here we only choose the prelinked virtual address.
5 *
6 * This file defines the version script giving the user-exported symbols in
7 * the DSO. We can define local symbols here called VDSO* to make their
8 * values visible using the asm-x86/vdso.h macros from the kernel proper.
9 */
10
11#define VDSO_PRELINK 0
12#include "vdso-layout.lds.S"
13
14/*
15 * This controls what userland symbols we export from the vDSO.
16 */
17VERSION {
18 LINUX_2.6 {
19 global:
20 clock_gettime;
21 __vdso_clock_gettime;
22 gettimeofday;
23 __vdso_gettimeofday;
24 getcpu;
25 __vdso_getcpu;
26 time;
27 __vdso_time;
28 local: *;
29 };
30}
31
32VDSOX32_PRELINK = VDSO_PRELINK;