1 files changed, 83 insertions, 0 deletions

diff --git a/include/asm-powerpc/vdso.h b/include/asm-powerpc/vdso.h
new file mode 100644
index 000000000000..85d8a7be25c4
--- /dev/null
+++ b/include/asm-powerpc/vdso.h
@@ -0,0 +1,83 @@
+#ifndef __PPC64_VDSO_H__
+#define __PPC64_VDSO_H__
+
+#ifdef __KERNEL__
+
+/* Default link addresses for the vDSOs */
+#define VDSO32_LBASE    0x100000
+#define VDSO64_LBASE    0x100000
+
+/* Default map addresses */
+#define VDSO32_MBASE    VDSO32_LBASE
+#define VDSO64_MBASE    VDSO64_LBASE
+
+#define VDSO_VERSION_STRING     LINUX_2.6.12
+
+/* Define if 64 bits VDSO has procedure descriptors */
+#undef VDS64_HAS_DESCRIPTORS
+
+#ifndef __ASSEMBLY__
+
+extern unsigned int vdso64_pages;
+extern unsigned int vdso32_pages;
+
+/* Offsets relative to thread->vdso_base */
+extern unsigned long vdso64_rt_sigtramp;
+extern unsigned long vdso32_sigtramp;
+extern unsigned long vdso32_rt_sigtramp;
+
+extern void vdso_init(void);
+
+#else /* __ASSEMBLY__ */
+
+#ifdef __VDSO64__
+#ifdef VDS64_HAS_DESCRIPTORS
+#define V_FUNCTION_BEGIN(name)          \
+        .globl name;                    \
+        .section ".opd","a";            \
+        .align 3;                       \
+        name:                           \
+        .quad .name,.TOC.@tocbase,0;    \
+        .previous;                      \
+        .globl .name;                   \
+        .type .name,@function;          \
+        .name:                          \
+
+#define V_FUNCTION_END(name)            \
+        .size .name,.-.name;
+
+#define V_LOCAL_FUNC(name) (.name)
+
+#else /* VDS64_HAS_DESCRIPTORS */
+
+#define V_FUNCTION_BEGIN(name)          \
+        .globl name;                    \
+        name:                           \
+
+#define V_FUNCTION_END(name)            \
+        .size name,.-name;
+
+#define V_LOCAL_FUNC(name) (name)
+
+#endif /* VDS64_HAS_DESCRIPTORS */
+#endif /* __VDSO64__ */
+
+#ifdef __VDSO32__
+
+#define V_FUNCTION_BEGIN(name)          \
+        .globl name;                    \
+        .type name,@function;           \
+        name:                           \
+
+#define V_FUNCTION_END(name)            \
+        .size name,.-name;
+
+#define V_LOCAL_FUNC(name) (name)
+
+#endif /* __VDSO32__ */
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __KERNEL__ */
+
+#endif /* __PPC64_VDSO_H__ */