crtbegin: eliminate duplicate code
crtbegin_dynamic and crtbegin_static are essentially identical,
minus a few trivial differences (comments and whitespace).
Eliminate duplicates.
Change-Id: Ic9fae6bc9695004974493b53bfc07cd3bb904480
diff --git a/libc/arch-arm/bionic/crtbegin.S b/libc/arch-arm/bionic/crtbegin.S
new file mode 100644
index 0000000..8843204
--- /dev/null
+++ b/libc/arch-arm/bionic/crtbegin.S
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+ .text
+ .align 4
+ .type _start,#function
+ .globl _start
+
+# this is the small startup code that is first run when
+# any executable that is linked with Bionic runs.
+#
+# it's purpose is to call __libc_init with appropriate
+# arguments, which are:
+#
+# - the address of the raw data block setup by the Linux
+# kernel ELF loader
+#
+# - address of an "onexit" function, not used on any
+# platform supported by Bionic
+#
+# - address of the "main" function of the program.
+#
+# - address of the constructor list
+#
+_start:
+ mov r0, sp
+ mov r1, #0
+ ldr r2, =main
+ adr r3, 1f
+ ldr r4, =__libc_init
+ blx r4
+ mov r0, #0
+ bx r0
+
+1: .long __PREINIT_ARRAY__
+ .long __INIT_ARRAY__
+ .long __FINI_ARRAY__
+ .long __CTOR_LIST__
+
+ .section .preinit_array, "aw"
+ .globl __PREINIT_ARRAY__
+__PREINIT_ARRAY__:
+ .long -1
+
+ .section .init_array, "aw"
+ .globl __INIT_ARRAY__
+__INIT_ARRAY__:
+ .long -1
+
+ .section .fini_array, "aw"
+ .globl __FINI_ARRAY__
+__FINI_ARRAY__:
+ .long -1
+
+ .section .ctors, "aw"
+ .globl __CTOR_LIST__
+__CTOR_LIST__:
+ .long -1
+
+#include "__dso_handle.S"
+#include "atexit.S"