1 files changed, 55 insertions, 0 deletions
diff --git a/linker/arch/x86/begin.c b/linker/arch/x86/begin.c
new file mode 100755
index 000000000..2ca15c4e9
--- /dev/null
+++ b/linker/arch/x86/begin.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+extern unsigned __linker_init(unsigned int *elfdata);
+
+__attribute__((visibility("hidden")))
+void _start() {
+  void *elfdata;
+  void (*start)(void);
+
+  elfdata = __builtin_frame_address(0) + sizeof(void *);
+  start = (void(*)(void))__linker_init(elfdata);
+
+  /* linker init returns (%eax) the _entry address in the main image */
+  /* entry point expects sp to point to elfdata */
+
+  __asm__ (
+     "mov %0, %%esp\n\t"
+     "jmp *%1\n\t"
+     : : "r"(elfdata), "r"(start) :
+  );
+
+  /* Unreachable */
+}
+
+/* Since linker has its own version of crtbegin (this file) it should have */
+/* own version of __stack_chk_fail_local for the case when it's built with */
+/* stack protector feature */
+
+#include "arch-x86/bionic/__stack_chk_fail_local.h"