x86_64: further cleanup of 32-bit compat syscall mechanisms

[linux-2.6-omap-h63xx.git] / include / asm-x86 / vdso.h

diff --git a/include/asm-x86/vdso.h b/include/asm-x86/vdso.h
index 9379ec06fd1fb882d490c43d2dddc10e3c939c4f..8e18fb80f5e641ac3683b8c84c68cb511c4ab30f 100644 (file)
--- a/include/asm-x86/vdso.h
+++ b/include/asm-x86/vdso.h
@@ -1,14 +1,47 @@
 #ifndef _ASM_X86_VDSO_H
 #define _ASM_X86_VDSO_H        1
 
+#ifdef CONFIG_X86_64
 extern const char VDSO64_PRELINK[];
 
 /*
  * Given a pointer to the vDSO image, find the pointer to VDSO64_name
  * as that symbol is defined in the vDSO sources or linker script.
  */
-#define VDSO64_SYMBOL(base, name) ({           \
-       extern const char VDSO64_##name[];      \
-       (void *) (VDSO64_##name - VDSO64_PRELINK + (unsigned long) (base)); })
+#define VDSO64_SYMBOL(base, name)                                      \
+({                                                                     \
+       extern const char VDSO64_##name[];                              \
+       (void *)(VDSO64_##name - VDSO64_PRELINK + (unsigned long)(base)); \
+})
+#endif
+
+#if defined CONFIG_X86_32 || defined CONFIG_COMPAT
+extern const char VDSO32_PRELINK[];
+
+/*
+ * Given a pointer to the vDSO image, find the pointer to VDSO32_name
+ * as that symbol is defined in the vDSO sources or linker script.
+ */
+#define VDSO32_SYMBOL(base, name)                                      \
+({                                                                     \
+       extern const char VDSO32_##name[];                              \
+       (void *)(VDSO32_##name - VDSO32_PRELINK + (unsigned long)(base)); \
+})
+#endif
+
+/*
+ * These symbols are defined with the addresses in the vsyscall page.
+ * See vsyscall-sigreturn.S.
+ */
+extern void __user __kernel_sigreturn;
+extern void __user __kernel_rt_sigreturn;
+
+/*
+ * These symbols are defined by vdso32.S to mark the bounds
+ * of the ELF DSO images included therein.
+ */
+extern const char vdso32_int80_start, vdso32_int80_end;
+extern const char vdso32_syscall_start, vdso32_syscall_end;
+extern const char vdso32_sysenter_start, vdso32_sysenter_end;
 
 #endif /* asm-x86/vdso.h */