auto import from //depot/cupcake/@135843
diff --git a/libc/arch-x86/bionic/crtbegin_dynamic.S b/libc/arch-x86/bionic/crtbegin_dynamic.S
new file mode 100644
index 0000000..3b47b18
--- /dev/null
+++ b/libc/arch-x86/bionic/crtbegin_dynamic.S
@@ -0,0 +1,96 @@
+# bionic/arch-x86/bionic/crtbegin_dynamic.S
+#
+# Copyright 2006, The Android Open Source Project
+#
+# 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.
+# * Neither the name of Google Inc. nor the names of its contributors may
+# be used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY Google Inc. ``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 Google Inc. 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 statically-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. We
+# can't hard-code it in the adr pseudo instruction
+# so we use a tiny trampoline that will get relocated
+# by the dynamic linker before this code runs
+#
+# - address of the constructor list
+#
+_start:
+ mov %esp, %eax
+ mov $1f, %edx
+ pushl %edx
+ mov $0f, %edx
+ pushl %edx
+ mov $0, %edx
+ pushl %edx
+ pushl %eax
+ call __libc_init
+
+0:
+ jmp main
+
+1: .long __PREINIT_ARRAY__
+ .long __INIT_ARRAY__
+ .long __FINI_ARRAY__
+ .long __CTOR_LIST__
+
+# the .ctors section contains a list of pointers to "constructor"
+# functions that need to be called in order during C library initialization,
+# just before the program is being run. This is a C++ requirement
+#
+# the last entry shall be 0, and is defined in crtend.S
+#
+ .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
+