1 files changed, 80 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/vdso.h b/arch/powerpc/include/asm/vdso.h
new file mode 100644
index 000000000..b5e1f8f8a
--- /dev/null
+++ b/arch/powerpc/include/asm/vdso.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PPC64_VDSO_H__
+#define __PPC64_VDSO_H__
+
+#ifdef __KERNEL__
+
+/* Default link addresses for the vDSOs */
+#define VDSO32_LBASE	0x0
+#define VDSO64_LBASE	0x0
+
+/* Default map addresses for 32bit vDSO */
+#define VDSO32_MBASE	0x100000
+
+#define VDSO_VERSION_STRING	LINUX_2.6.15
+
+/* Define if 64 bits VDSO has procedure descriptors */
+#undef VDS64_HAS_DESCRIPTORS
+
+#ifndef __ASSEMBLY__
+
+/* Offsets relative to thread->vdso_base */
+extern unsigned long vdso64_rt_sigtramp;
+extern unsigned long vdso32_sigtramp;
+extern unsigned long vdso32_rt_sigtramp;
+
+int vdso_getcpu_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__ */