init android origin source code

1 files changed, 37 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/arch/x86/vdso/vdso32/vdso32.lds.S b/ANDROID_3.4.5/arch/x86/vdso/vdso32/vdso32.lds.S
new file mode 100644
index 00000000..976124bb
--- /dev/null
+++ b/ANDROID_3.4.5/arch/x86/vdso/vdso32/vdso32.lds.S
@@ -0,0 +1,37 @@
+/*
+ * Linker script for 32-bit 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"
+
+/* The ELF entry point can be used to set the AT_SYSINFO value.  */
+ENTRY(__kernel_vsyscall);
+
+/*
+ * This controls what userland symbols we export from the vDSO.
+ */
+VERSION
+{
+	LINUX_2.5 {
+	global:
+		__kernel_vsyscall;
+		__kernel_sigreturn;
+		__kernel_rt_sigreturn;
+	local: *;
+	};
+}
+
+/*
+ * Symbols we define here called VDSO* get their values into vdso32-syms.h.
+ */
+VDSO32_PRELINK		= VDSO_PRELINK;
+VDSO32_vsyscall		= __kernel_vsyscall;
+VDSO32_sigreturn	= __kernel_sigreturn;
+VDSO32_rt_sigreturn	= __kernel_rt_sigreturn;