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author | H. J. Lu <hjl.tools@gmail.com> | 2012-02-19 19:38:06 (GMT) |
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committer | H. Peter Anvin <hpa@zytor.com> | 2012-02-20 20:52:06 (GMT) |
commit | 1a21d4e095ef720abf81299000afc038206d571b (patch) | |
tree | 8d64feea71f41f785521f66fecbd29c16b0cf63a /arch/x86/vdso/vdsox32.lds.S | |
parent | 5fd92e65a68b813667bc8739f5fa463e5bfcd66d (diff) | |
download | linux-fsl-qoriq-1a21d4e095ef720abf81299000afc038206d571b.tar.xz |
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.S | 32 |
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 0000000..373ca9a --- /dev/null +++ b/arch/x86/vdso/vdsox32.lds.S @@ -0,0 +1,32 @@ +/* + * Linker script for x32 vDSO. + * We #include the file to define the layout details. + * Here we only choose the prelinked virtual address. + * + * This file defines the version script giving the user-exported symbols in + * the DSO. We can define local symbols here called VDSO* to make their + * values visible using the asm-x86/vdso.h macros from the kernel proper. + */ + +#define VDSO_PRELINK 0 +#include "vdso-layout.lds.S" + +/* + * This controls what userland symbols we export from the vDSO. + */ +VERSION { + LINUX_2.6 { + global: + clock_gettime; + __vdso_clock_gettime; + gettimeofday; + __vdso_gettimeofday; + getcpu; + __vdso_getcpu; + time; + __vdso_time; + local: *; + }; +} + +VDSOX32_PRELINK = VDSO_PRELINK; |