Merge "ndk: Remove prebuilt C runtime objects. Add sources instead."

34 files changed, 1370 insertions, 1 deletions

diff --git a/ndk/platforms/README.CRT.TXT b/ndk/platforms/README.CRT.TXT
new file mode 100644
index 000000000..82d0a1a6f
--- /dev/null
+++ b/ndk/platforms/README.CRT.TXT
@@ -0,0 +1,274 @@
+This directory contains the sources of the C runtime object files
+required by the Android NDK toolchains. This document explains
+what they are, as well as a few important details about them.
+
+The files are located under the following directories:
+
+  android-3/arch-arm/src/
+  android-9/arch-x86/src/
+  android-9/arch-mips/src/
+
+They are all *assembly* files with an .S extension, which means that
+they'll be sent to the C-preprocessor before being assembled into
+object files. They have the following names and usage:
+
+  crtbegin_static.S
+    This file contains a tiny ELF startup entry point (named '_start')
+    that is linked into every Android _static_ executable. These binaries can
+    run on any Linux ARM system, but cannot perform dynamic linking at all.
+
+    Note that the kernel calls the '_start' entry point directly when it
+    launches such an executable. The _start stub is used to call the
+    C library's runtime initialization, passing it the address of the
+    'main' function.
+
+  crtbegin_dynamic.S
+    This is equivalent to crtbegin_static.S, for for _dynamic_ executables.
+    These executables always link to the system C library dynamically.
+
+    When the kernel launches such an executable, it actually starts the
+    dynamic linker (/system/bin/linker), which loads and relocates the
+    executable (possibly loading any dependent system libraries as well),
+    then call the _start stub.
+
+  crtbegin_so.S
+    This is equivalent to crtbegin_dynamic.S, but shall be used for
+    shared libraries. One major difference is that there is no _start
+    entry point.
+
+  crtend_android.S
+    This source file shall be used when generating an executable, i.e. used
+    in association with either crtbegin_static.S or crtbegin_dynamic.S
+
+  crtend.S
+    This source file is _strictly_ equivalent to crtend_android.S.
+    Actually, it *must* be compiled into an object named 'crtend_android.o'
+    because that's the hard-coded name that the toolchain binaries expect.
+
+    (the naming difference for this source file is purely historical, it
+    could probably be removed in the future).
+
+  crtend_so.S
+    This source's object file shall be used when generating a shared library,
+    i.e. used in association with crtbegin_so.S only.
+
+Content of these files:
+
+ELF section (lists);
+
+  crtbegin_static.S + crtbegin_dynamic.S contain a '_start' entry point for
+  the corresponding executable. crtbegin_so.S doesn't need any.
+
+  all crtbegin_XXX.s files contain the head of various ELF sections, which are
+  used to list of ELF constructors and destructors. The sections are:
+
+    .init_array:
+        Contains a list of function addresses that are run at load time.
+        This means they are run *before* 'main', in the case of executables,
+        or during 'dlopen()' for shared libraries (either implicit or explicit).
+
+        The functions are called in list order (from first to last).
+
+    .fini_array:
+        Contains a list of destructor addresses that are run at unload time.
+        This means they are run *after* 'exit', in the case of executables,
+        or during 'dlclose()' for shared libraries (either implicit or explicit).
+
+        The functions are called in _reverse_ list order (from last to first).
+
+    .preinit_array:
+        This section can *only* appear in executables. It contains a list of
+        constructors that are run _before_ the ones in .init_array, or those
+        of any dependent shared library (if any).
+
+    .ctors
+        This section shall *not* be used on Android. Used on some GLibc-based
+        Linux systems to hold list of constructors. The toolchains should
+        place all constructors in .init_array instead.
+
+    .dtors
+        This section shall *not* be used on Android. Used on some GLibc-based
+        Linux systems to hold a list of destructors. The toolchains should
+        place all destructors in .fini_array instead.
+
+
+__dso_handle symbol:
+
+  To properly support the C++ ABI, a unique *local* *hidden* symbol named
+  '__dso_handle' must be defined in each shared library.
+
+  This is used to implement static C++ object initialization in a shared
+  library, as in:
+
+      static Foo  foo(10);
+
+  The statement above creates a hidden function, which address will be added
+  to the .init_array section described above. Its compiler-generated code
+  will perform the object construction, and also register static destructor
+  using a call that looks like:
+
+      __cxa_atexit( Foo::~Foo, &foo, &__dso_handle );
+
+  Where '__cxa_atexit' is a special C++ support function provided by the
+  C library. Doing this ensures that the destructor for 'foo' will be
+  automatically called when the shared library containing this code is
+  unloaded (i.e. either through 'dlclose' or at program exit).
+
+  The value of __dso_handle is normally never taken directly.
+
+  See http://sourcery.mentor.com/public/cxx-abi/abi.html#dso-dtor
+
+  WARNING: There is a big caveat regarding this symbol. Read the section
+           named 'IMPORTANT BACKWARDS COMPATIBILITY ISSUES' below.
+
+
+atexit() implementation:
+
+  The Posix standard doesn't mandate the program behaviour's when a shared
+  library which registered a function with 'atexit' is unloaded explicitely
+  (e.g. with 'dlclose()').
+
+  On most BSD systems (including OS X), unloading the library succeeds, but
+  the program will crash when it calls exit() or returns from main().
+
+  On Linux, GLibc provides an implementation that automatically unregisters
+  such atexit() handlers when the corresponding shared library is unloaded.
+
+  However, this requires that the atexit() implementation be part of the
+  shared library itself, rather than the C library.
+
+  The crtbegin_shared.S and crtbegin_static.S files contain an tiny
+  implementation of atexit() in assembler that essentially does:
+
+      void atexit(void(*myfunc)(void))
+      {
+         __cxa_atexit(myfunc, NULL, &__dso_handle);
+      }
+
+  Because it references the shared library's hidden __dso_handle symbol,
+  this code cannot be in the C library itself.
+
+  Note that crtbegin_static.S should *not* provide an atexit() function
+  (the latter should be provided by libc.a instead).
+
+  See 'BACKWARDS COMPATIBILITY ISSUES' section below.
+
+
+
+BACKWARDS COMPATIBILITY ISSUES:
+-------------------------------
+
+To maintain binary compatibility to all existing NDK-generated machine code,
+the system's C library (i.e. /system/lib/libc.so) needs to exports symbols
+that shall *not* be exported by the NDK-provided link-time libraries (i.e.
+$NDK/platforms/android-$LEVEL/arch-$ARCH/usr/lib/libc.so).
+
+Starting from NDK r7, the NDK libc.so is itself generated by a script
+(gen-platforms.sh) from a list of symbol files (see libc.so.functions.txt
+and libc.so.variables.txt) and does not contain any implementation code.
+
+The NDK libc.a, on the other hand, is a copy of a given version of the system
+C static library, and shall only be used to generate static executables (it
+is also required to build gdbserver).
+
+1. libgcc compatibility symbols:
+
+  None of the link-time NDK shared libraries should export any libgcc symbol.
+
+  However, on ARM, the system C library needs to export some of them to
+  maintain binary compatibility with 'legacy' NDK machine code. Details are
+  under bionic/libc/arch-arm/bionic/libgcc_compat.c.
+
+  Note that gen-platforms.sh takes care of this by explicitely removing any
+  libgcc symbol from the link-time shared libraries it generates. This is done
+  by using the lists under:
+
+     $NDK/build/tools/toolchain-symbols/$ARCH/libgcc.a.functions.txt
+
+  You will need to update these files when the toolchain changes.
+
+  Note that all libgcc releases should be backwards-compatible, i.e. newer
+  releases always contain all the symbols from previous ones).
+
+
+2. __dso_handle compatibility symbol:
+
+  Earlier versions of the C library exported a __dso_handle symbol
+  *incorrectly*. As such:
+
+   - the system's libc.so shall always export its __dso_handle, as *global*
+     and *public* (in ELF visibility terms). A weak symbol definition is ok
+     but not necessary. This is only to ensure binary compatibility with
+    'legacy' NDK machine code.
+
+   - the NDK link-time libc.so shall *never* export or contain any
+     __dso_handle symbol.
+
+   - The NDK's crtbegin_dynamic.S and crtbegin_so.S shall provide a *local*
+     and *hidden* __dso_handle symbol.
+
+   - The NDK's libc.a will containg a *global* and *public* __dso_handle, since
+     it is a copy of a release-specific system libc.so.
+
+   - crtbegin_static.S shall not provide any __dso_handle symbol, since static
+     executables will use the one in libc.a instead.
+
+Note that existing NDK machine code that links against the system libc's
+__dso_handle will not have their C++ destructors run correctly when the
+library is unloaded. However, this bug can be solved by simply recompiling
+/relinking against a newer NDK release, without touching the original
+sources.
+
+
+
+3. atexit compatibility symbol:
+
+  Earlier versions of the C library implemented and exported an atexit()
+  function. While this is compliant with Posix, this doesn't allow a useful
+  GLibc extension which automatically un-registers atexit() handlers when
+  a shared library is unloaded with dlclose().
+
+  To support this, while providing binary compatibility, the following
+  must apply:
+
+  - The platform's /system/lib/libc.so should *always* export a working
+    atexit() implementation (used by 'legacy' NDK machine code).
+
+  - The NDK link-time libc.so should *never* export atexit()
+
+  - crtbegin_shared.S, crtbegin_so.S shall define a *local* *hidden*
+    symbol for atexit(), with a tiny implementation that amounts to the
+    following code:
+
+         void atexit( void(*handler)(void) )
+         {
+            __cxa_atexit( handler, NULL, &__dso_handle );
+         }
+
+  - The NDK libc.a shall provide an atexit() implementation, and
+    crtbegin_static.S shall *not* provide one to avoid conflicts.
+
+Note that existing NDK machine code that links against the system libc's
+atexit symbol will not have their atexit-handler automatically unregistered
+when the library is unloaded. However, this bug can be solved by simply
+recompiling/relinking against a newer NDK release, without touching the
+original sources.
+
+4. __atomic_xxx sompatibility symbols:
+
+This issues is detailed in ndk/docs/ANDROID-ATOMICS.html and
+bionic/libc/arch-arm/bionic/atomics_arm.c. In a nutshell:
+
+   - The system C library *shall* always export on *ARM* the __atomic_cmpxchg,
+     __atomic_inc and __atomic_dec functions to support legacy NDK machine code.
+     Their implementation should have full (i.e. acquire+release) memory ordering
+     semantics.
+
+   - The system C library for other CPU architectures (e.g. x86 or mips) *shall*
+     *not* export any of these symbols.
+
+   - The NDK libc.so *shall* *not* export these symbols at all.
+
+   - The NDK <sys/atomics.h> header shall provide inlined-static versions of
+     these functions that use the built-in GCC atomic functions instead.
+    
diff --git a/ndk/platforms/android-3/arch-arm/lib/crtbegin_dynamic.o b/ndk/platforms/android-3/arch-arm/lib/crtbegin_dynamic.o
deleted file mode 100644
index f34cba84e..000000000
--- a/ndk/platforms/android-3/arch-arm/lib/crtbegin_dynamic.o
+++ /dev/null
diff --git a/ndk/platforms/android-3/arch-arm/lib/crtbegin_so.o b/ndk/platforms/android-3/arch-arm/lib/crtbegin_so.o
deleted file mode 100644
index 523017896..000000000
--- a/ndk/platforms/android-3/arch-arm/lib/crtbegin_so.o
+++ /dev/null
diff --git a/ndk/platforms/android-3/arch-arm/lib/crtbegin_static.o b/ndk/platforms/android-3/arch-arm/lib/crtbegin_static.o
deleted file mode 100644
index f34cba84e..000000000
--- a/ndk/platforms/android-3/arch-arm/lib/crtbegin_static.o
+++ /dev/null
diff --git a/ndk/platforms/android-3/arch-arm/lib/crtend_android.o b/ndk/platforms/android-3/arch-arm/lib/crtend_android.o
deleted file mode 100644
index c57149e5d..000000000
--- a/ndk/platforms/android-3/arch-arm/lib/crtend_android.o
+++ /dev/null
diff --git a/ndk/platforms/android-3/arch-arm/lib/crtend_so.o b/ndk/platforms/android-3/arch-arm/lib/crtend_so.o
deleted file mode 100644
index c54db97fd..000000000
--- a/ndk/platforms/android-3/arch-arm/lib/crtend_so.o
+++ /dev/null
diff --git a/ndk/platforms/android-3/arch-arm/src/__dso_handle.S b/ndk/platforms/android-3/arch-arm/src/__dso_handle.S
new file mode 100644
index 000000000..2d783894d
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/__dso_handle.S
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+# The __dso_handle global variable is used by static
+# C++ constructors and destructors in the binary.
+# See http://www.codesourcery.com/public/cxx-abi/abi.html#dso-dtor
+#
+        .data
+        .align 4
+
+/* CRT_LEGACY_WORKAROUND is only defined when building this file
+ * for the C library. This forces __dso_handle to be exported by
+ * it. This is only required to ensure binary compatibility with
+ * old NDK application machine code that contains reference to
+ * the symbol, but do not have a proper definition for it.
+ *
+ * These binaries cannot call their destructorson dlclose(), but
+ * at least they will not fail to load.
+ *
+ * When this file is built for the NDK, CRT_LEGACY_WORKAROUND
+ * should never be defined.
+ */
+
+#ifndef CRT_LEGACY_WORKAROUND
+	.hidden __dso_handle
+#endif
+
+        .globl __dso_handle
+__dso_handle:
+        .long __dso_handle
diff --git a/ndk/platforms/android-3/arch-arm/src/__dso_handle_so.S b/ndk/platforms/android-3/arch-arm/src/__dso_handle_so.S
new file mode 100644
index 000000000..77a5d7fba
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/__dso_handle_so.S
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+# The __dso_handle global variable is used by static
+# C++ constructors and destructors in the binary.
+# See http://www.codesourcery.com/public/cxx-abi/abi.html#dso-dtor
+#
+	.data
+        .align 4
+	.hidden __dso_handle
+        .globl __dso_handle
+__dso_handle:
+        .long __dso_handle
diff --git a/ndk/platforms/android-3/arch-arm/src/atexit.S b/ndk/platforms/android-3/arch-arm/src/atexit.S
new file mode 100644
index 000000000..b6401edab
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/atexit.S
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+/* CRT_LEGACY_WORKAROUND should only be defined when building
+ * this file as part of the platform's C library.
+ *
+ * The C library already defines a function named 'atexit()'
+ * for backwards compatibility with older NDK-generated binaries.
+ *
+ * For newer ones, 'atexit' is actually embedded in the C
+ * runtime objects that are linked into the final ELF
+ * binary (shared library or executable), and will call
+ * __cxa_atexit() in order to un-register any atexit()
+ * handler when a library is unloaded.
+ *
+ * This function must be global *and* hidden. Only the
+ * code inside the same ELF binary should be able to access it.
+ */
+#ifndef CRT_LEGACY_WORKAROUND
+	.arch armv5te
+	.fpu softvfp
+	.eabi_attribute 20, 1
+	.eabi_attribute 21, 1
+	.eabi_attribute 23, 3
+	.eabi_attribute 24, 1
+	.eabi_attribute 25, 1
+	.eabi_attribute 26, 2
+	.eabi_attribute 30, 4
+	.eabi_attribute 18, 4
+	.hidden	atexit
+	.code	16
+	.thumb_func
+        .text
+        .align 0
+        .global atexit
+        .type atexit, #function
+atexit: .fnstart
+.LFB0:
+	.save	{r4, lr}
+	push	{r4, lr}
+.LCFI0:
+	ldr	r3, .L3
+	mov	r1, #0
+	@ sp needed for prologue
+.LPIC0:
+	add	r3, pc
+	ldr	r2, [r3]
+        ldr     r3, =__cxa_atexit
+	blx     r3
+	pop	{r4, pc}
+.L4:
+	.align	2
+.L3:
+	.word	__dso_handle-(.LPIC0+4)
+.LFE0:
+        .fnend
+        .size atexit, . - atexit
+#endif
diff --git a/ndk/platforms/android-3/arch-arm/src/crtbegin_dynamic.S b/ndk/platforms/android-3/arch-arm/src/crtbegin_dynamic.S
new file mode 100644
index 000000000..6ca08458e
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/crtbegin_dynamic.S
@@ -0,0 +1,84 @@
+/*
+ * 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 dynamically-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
+	bx	r4
+
+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"
diff --git a/ndk/platforms/android-3/arch-arm/src/crtbegin_so.S b/ndk/platforms/android-3/arch-arm/src/crtbegin_so.S
new file mode 100644
index 000000000..9275b1e01
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/crtbegin_so.S
@@ -0,0 +1,61 @@
+/*
+ * 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.
+ */
+
+# Implement static C++ destructors when the shared
+# library is unloaded through dlclose().
+#
+# A call to this function must be the first entry
+# in the .fini_array. See 3.3.5.3.C of C++ ABI
+# standard.
+#
+__on_dlclose:
+        adr     r0, 0f
+        ldr     r0, [r0]
+        b       __cxa_finalize
+
+0:
+        .long   __dso_handle
+
+	.section .init_array, "aw"
+	.globl __INIT_ARRAY__
+__INIT_ARRAY__:
+	.long -1
+
+        .section .fini_array, "aw"
+        .globl __FINI_ARRAY__
+__FINI_ARRAY__:
+        .long -1
+        .long __on_dlclose
+
+#ifdef CRT_LEGACY_WORKAROUND
+#include "__dso_handle.S"
+#else
+#include "__dso_handle_so.S"
+#endif
+
+#include "atexit.S"
diff --git a/ndk/platforms/android-3/arch-arm/src/crtbegin_static.S b/ndk/platforms/android-3/arch-arm/src/crtbegin_static.S
new file mode 100644
index 000000000..ec13351eb
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/crtbegin_static.S
@@ -0,0 +1,86 @@
+/*
+ * 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 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.
+#
+#    - address of the constructor list
+#
+_start:	
+	mov	r0, sp
+	mov	r1, #0
+	ldr	r2, =main
+	adr	r3, 1f
+	ldr	r4, =__libc_init
+	bx	r4
+
+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"
+/* NOTE: atexit() is  not be provided by crtbegin_static.S, but by libc.a */
+
diff --git a/ndk/platforms/android-3/arch-arm/src/crtend.S b/ndk/platforms/android-3/arch-arm/src/crtend.S
new file mode 100644
index 000000000..2f3b1ede3
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/crtend.S
@@ -0,0 +1,40 @@
+/*
+ * 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.
+ */
+	
+	.section .preinit_array, "aw"
+	.long 0
+
+	.section .init_array, "aw"
+	.long 0
+
+	.section .fini_array, "aw"
+	.long 0
+
+	.section .ctors, "aw"
+	.long 0
+
diff --git a/ndk/platforms/android-3/arch-arm/src/crtend_so.S b/ndk/platforms/android-3/arch-arm/src/crtend_so.S
new file mode 100644
index 000000000..a1281c402
--- /dev/null
+++ b/ndk/platforms/android-3/arch-arm/src/crtend_so.S
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+/* This is the same than crtend.S except that a shared library
+ * cannot have a .preinit_array
+ */
+	
+	.section .init_array, "aw"
+	.long 0
+
+	.section .fini_array, "aw"
+	.long 0
+
diff --git a/ndk/platforms/android-9/arch-mips/lib/crtbegin_dynamic.o b/ndk/platforms/android-9/arch-mips/lib/crtbegin_dynamic.o
deleted file mode 100644
index 3202d1a1c..000000000
--- a/ndk/platforms/android-9/arch-mips/lib/crtbegin_dynamic.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-mips/lib/crtbegin_so.o b/ndk/platforms/android-9/arch-mips/lib/crtbegin_so.o
deleted file mode 100644
index ddfd10072..000000000
--- a/ndk/platforms/android-9/arch-mips/lib/crtbegin_so.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-mips/lib/crtbegin_static.o b/ndk/platforms/android-9/arch-mips/lib/crtbegin_static.o
deleted file mode 100644
index 34c5337f8..000000000
--- a/ndk/platforms/android-9/arch-mips/lib/crtbegin_static.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-mips/lib/crtend_android.o b/ndk/platforms/android-9/arch-mips/lib/crtend_android.o
deleted file mode 100644
index 4ac6536d4..000000000
--- a/ndk/platforms/android-9/arch-mips/lib/crtend_android.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-mips/lib/crtend_so.o b/ndk/platforms/android-9/arch-mips/lib/crtend_so.o
deleted file mode 100644
index 5c686298c..000000000
--- a/ndk/platforms/android-9/arch-mips/lib/crtend_so.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-mips/src/crtbegin_static.S b/ndk/platforms/android-9/arch-mips/src/crtbegin_static.S
index 9f00811ea..16534e88b 100644
--- a/ndk/platforms/android-9/arch-mips/src/crtbegin_static.S
+++ b/ndk/platforms/android-9/arch-mips/src/crtbegin_static.S
@@ -228,4 +228,4 @@ $L3:
 	.weak	__register_frame_info
 
 .include "__dso_handle.S"
-.include "atexit.S"
+/* NOTE: atexit() is  not be provided by crtbegin_static.S, but by libc.a */
diff --git a/ndk/platforms/android-9/arch-x86/lib/crtbegin_dynamic.o b/ndk/platforms/android-9/arch-x86/lib/crtbegin_dynamic.o
deleted file mode 100644
index 17704f55b..000000000
--- a/ndk/platforms/android-9/arch-x86/lib/crtbegin_dynamic.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-x86/lib/crtbegin_so.o b/ndk/platforms/android-9/arch-x86/lib/crtbegin_so.o
deleted file mode 100644
index cf50f1de8..000000000
--- a/ndk/platforms/android-9/arch-x86/lib/crtbegin_so.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-x86/lib/crtbegin_static.o b/ndk/platforms/android-9/arch-x86/lib/crtbegin_static.o
deleted file mode 100644
index 17704f55b..000000000
--- a/ndk/platforms/android-9/arch-x86/lib/crtbegin_static.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-x86/lib/crtend_android.o b/ndk/platforms/android-9/arch-x86/lib/crtend_android.o
deleted file mode 100644
index 87716a04c..000000000
--- a/ndk/platforms/android-9/arch-x86/lib/crtend_android.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-x86/lib/crtend_so.o b/ndk/platforms/android-9/arch-x86/lib/crtend_so.o
deleted file mode 100644
index 4c4460fbe..000000000
--- a/ndk/platforms/android-9/arch-x86/lib/crtend_so.o
+++ /dev/null
diff --git a/ndk/platforms/android-9/arch-x86/src/__dso_handle.S b/ndk/platforms/android-9/arch-x86/src/__dso_handle.S
new file mode 100644
index 000000000..3e801284f
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/__dso_handle.S
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+# The __dso_handle global variable is used by static
+# C++ constructors and destructors in the binary.
+# See http://www.codesourcery.com/public/cxx-abi/abi.html#dso-dtor
+#
+        .section .bss
+        .align 4
+
+#ifndef CRT_LEGACY_WORKAROUND
+	.hidden __dso_handle
+#endif
+
+        .globl __dso_handle
+__dso_handle:
+        .long 0
diff --git a/ndk/platforms/android-9/arch-x86/src/__dso_handle_so.S b/ndk/platforms/android-9/arch-x86/src/__dso_handle_so.S
new file mode 100644
index 000000000..77a5d7fba
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/__dso_handle_so.S
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+# The __dso_handle global variable is used by static
+# C++ constructors and destructors in the binary.
+# See http://www.codesourcery.com/public/cxx-abi/abi.html#dso-dtor
+#
+	.data
+        .align 4
+	.hidden __dso_handle
+        .globl __dso_handle
+__dso_handle:
+        .long __dso_handle
diff --git a/ndk/platforms/android-9/arch-x86/src/__stack_chk_fail_local.S b/ndk/platforms/android-9/arch-x86/src/__stack_chk_fail_local.S
new file mode 100644
index 000000000..59fe86ec3
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/__stack_chk_fail_local.S
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+/*
+ * Contributed by: Intel Corporation
+ */
+
+	.text
+	.p2align 4,,15
+	.globl	__stack_chk_fail_local
+	.hidden	__stack_chk_fail_local
+	.type	__stack_chk_fail_local, @function
+
+__stack_chk_fail_local:
+#ifdef __PIC__
+	pushl	%ebx
+	call	__x86.get_pc_thunk.bx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+	call	__stack_chk_fail@PLT
+#else /* PIC */
+	jmp   __stack_chk_fail
+#endif /* not PIC */
+
+	.size	__stack_chk_fail_local, .-__stack_chk_fail_local
diff --git a/ndk/platforms/android-9/arch-x86/src/atexit.S b/ndk/platforms/android-9/arch-x86/src/atexit.S
new file mode 100644
index 000000000..b28f40bb6
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/atexit.S
@@ -0,0 +1,66 @@
+/*
+ * 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
+	.p2align 4,,15
+	.globl	atexit
+	.hidden	atexit
+	.type	atexit, @function
+atexit:
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%ebx
+	call	__x86.get_pc_thunk.bx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+	subl	$20, %esp
+	movl	$0, 4(%esp)
+	movl	__dso_handle@GOTOFF(%ebx), %eax
+	movl	%eax, 8(%esp)
+	movl	8(%ebp), %eax
+	movl	%eax, (%esp)
+	call	__cxa_atexit@PLT
+	addl	$20, %esp
+	popl	%ebx
+	popl	%ebp
+	ret
+	.size	atexit, .-atexit
+
+	.section	.text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
+	.globl	__x86.get_pc_thunk.bx
+	.hidden	__x86.get_pc_thunk.bx
+	.type	__x86.get_pc_thunk.bx, @function
+__x86.get_pc_thunk.bx:
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	movl	(%esp), %ebx
+	ret
diff --git a/ndk/platforms/android-9/arch-x86/src/crtbegin_dynamic.S b/ndk/platforms/android-9/arch-x86/src/crtbegin_dynamic.S
new file mode 100644
index 000000000..177244b70
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/crtbegin_dynamic.S
@@ -0,0 +1,139 @@
+# 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 dynamically-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
+        # before push arguments, align the stack to a 16 byte boundary
+        andl    $~15, %esp
+        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__
+
+	.section .preinit_array, "aw"
+	.globl __PREINIT_ARRAY__
+__PREINIT_ARRAY__:
+	.long -1
+
+	.section .init_array, "aw"
+	.globl __INIT_ARRAY__
+__INIT_ARRAY__:
+	.long -1
+	.long	frame_dummy
+
+	.section .fini_array, "aw"
+	.globl __FINI_ARRAY__
+__FINI_ARRAY__:
+	.long -1
+	.long	__do_global_dtors_aux
+
+	.section	.eh_frame,"a",@progbits
+	.align 4
+	.type	__EH_FRAME_BEGIN__, @object
+__EH_FRAME_BEGIN__:
+	.text
+	.p2align 4,,15
+	.type	__do_global_dtors_aux, @function
+__do_global_dtors_aux:
+	pushl	%ebp
+	movl	%esp, %ebp
+	subl	$24, %esp
+	cmpb	$0, completed.4454
+	jne	.L4
+	movl	$__deregister_frame_info_bases, %eax
+	testl	%eax, %eax
+	je	.L3
+	movl	$__EH_FRAME_BEGIN__, (%esp)
+	call	__deregister_frame_info_bases
+.L3:
+	movb	$1, completed.4454
+.L4:
+	leave
+	ret
+	.text
+	.p2align 4,,15
+	.type	frame_dummy, @function
+frame_dummy:
+	pushl	%ebp
+	movl	$__register_frame_info_bases, %eax
+	movl	%esp, %ebp
+	subl	$24, %esp
+	testl	%eax, %eax
+	je	.L7
+	movl	%ebx, 12(%esp)
+	movl	$0, 8(%esp)
+	movl	$object.4466, 4(%esp)
+	movl	$__EH_FRAME_BEGIN__, (%esp)
+	call	__register_frame_info_bases
+.L7:
+	leave
+	ret
+	.local	completed.4454
+	.comm	completed.4454,1,1
+	.local	object.4466
+	.comm	object.4466,24,4
+	.weak	__register_frame_info_bases
+	.weak	__deregister_frame_info_bases
+
+#include "__dso_handle.S"
+#include "atexit.S"
+#include "__stack_chk_fail_local.S"
diff --git a/ndk/platforms/android-9/arch-x86/src/crtbegin_so.S b/ndk/platforms/android-9/arch-x86/src/crtbegin_so.S
new file mode 100644
index 000000000..99662fe16
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/crtbegin_so.S
@@ -0,0 +1,111 @@
+/*
+ * 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.
+ */
+
+.section .init_array, "aw"
+.align 4
+.type __INIT_ARRAY__, @object
+.globl __INIT_ARRAY__
+__INIT_ARRAY__:
+    .long -1
+    .long frame_dummy
+
+.section .fini_array, "aw"
+.align 4
+.type __FINI_ARRAY__, @object
+.globl __FINI_ARRAY__
+__FINI_ARRAY__:
+    .long -1
+    .long __do_global_dtors_aux
+
+	.section	.eh_frame,"a",@progbits
+	.align 4
+	.type	__EH_FRAME_BEGIN__, @object
+__EH_FRAME_BEGIN__:
+	.text
+	.p2align 4,,15
+	.type	__do_global_dtors_aux, @function
+__do_global_dtors_aux:
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%ebx
+	call	__x86.get_pc_thunk.bx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+	subl	$20, %esp
+	cmpb	$0, completed.4454@GOTOFF(%ebx)
+	jne	.L5
+	movl	__dso_handle@GOTOFF(%ebx), %eax
+	movl	%eax, (%esp)
+	call	__cxa_finalize@PLT
+	movl	__deregister_frame_info_bases@GOT(%ebx), %eax
+	testl	%eax, %eax
+	je	.L4
+	leal	__EH_FRAME_BEGIN__@GOTOFF(%ebx), %eax
+	movl	%eax, (%esp)
+	call	__deregister_frame_info_bases@PLT
+.L4:
+	movb	$1, completed.4454@GOTOFF(%ebx)
+.L5:
+	addl	$20, %esp
+	popl	%ebx
+	popl	%ebp
+	ret
+	.text
+	.p2align 4,,15
+	.type	frame_dummy, @function
+frame_dummy:
+	pushl	%ebp
+	movl	%esp, %ebp
+	pushl	%ebx
+	call	__x86.get_pc_thunk.bx
+	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
+	subl	$20, %esp
+	movl	__register_frame_info_bases@GOT(%ebx), %eax
+	testl	%eax, %eax
+	je	.L8
+	leal	object.4469@GOTOFF(%ebx), %eax
+	movl	%eax, 4(%esp)
+	leal	__EH_FRAME_BEGIN__@GOTOFF(%ebx), %eax
+	movl	%ebx, 12(%esp)
+	movl	$0, 8(%esp)
+	movl	%eax, (%esp)
+	call	__register_frame_info_bases@PLT
+.L8:
+	addl	$20, %esp
+	popl	%ebx
+	popl	%ebp
+	ret
+	.local	completed.4454
+	.comm	completed.4454,1,1
+	.local	object.4469
+	.comm	object.4469,24,4
+	.weak	__register_frame_info_bases
+	.weak	__deregister_frame_info_bases
+
+#include "__dso_handle_so.S"
+#include "atexit.S"
+#include "__stack_chk_fail_local.S"
diff --git a/ndk/platforms/android-9/arch-x86/src/crtbegin_static.S b/ndk/platforms/android-9/arch-x86/src/crtbegin_static.S
new file mode 100644
index 000000000..4f95b1e40
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/crtbegin_static.S
@@ -0,0 +1,139 @@
+# bionic/arch-x86/bionic/crtbegin_static.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
+        # before push arguments, align the stack to a 16 byte boundary
+        andl    $~15, %esp
+        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__
+
+	.section .preinit_array, "aw"
+	.globl __PREINIT_ARRAY__
+__PREINIT_ARRAY__:
+	.long -1
+
+	.section .init_array, "aw"
+	.globl __INIT_ARRAY__
+__INIT_ARRAY__:
+	.long -1
+	.long	frame_dummy
+
+	.section .fini_array, "aw"
+	.globl __FINI_ARRAY__
+__FINI_ARRAY__:
+	.long -1
+	.long	__do_global_dtors_aux
+
+	.section	.eh_frame,"a",@progbits
+	.align 4
+	.type	__EH_FRAME_BEGIN__, @object
+__EH_FRAME_BEGIN__:
+	.text
+	.p2align 4,,15
+	.type	__do_global_dtors_aux, @function
+__do_global_dtors_aux:
+	pushl	%ebp
+	movl	%esp, %ebp
+	subl	$24, %esp
+	cmpb	$0, completed.4454
+	jne	.L4
+	movl	$__deregister_frame_info_bases, %eax
+	testl	%eax, %eax
+	je	.L3
+	movl	$__EH_FRAME_BEGIN__, (%esp)
+	call	__deregister_frame_info_bases
+.L3:
+	movb	$1, completed.4454
+.L4:
+	leave
+	ret
+	.text
+	.p2align 4,,15
+	.type	frame_dummy, @function
+frame_dummy:
+	pushl	%ebp
+	movl	$__register_frame_info_bases, %eax
+	movl	%esp, %ebp
+	subl	$24, %esp
+	testl	%eax, %eax
+	je	.L7
+	movl	%ebx, 12(%esp)
+	movl	$0, 8(%esp)
+	movl	$object.4466, 4(%esp)
+	movl	$__EH_FRAME_BEGIN__, (%esp)
+	call	__register_frame_info_bases
+.L7:
+	leave
+	ret
+	.local	completed.4454
+	.comm	completed.4454,1,1
+	.local	object.4466
+	.comm	object.4466,24,4
+	.weak	__register_frame_info_bases
+	.weak	__deregister_frame_info_bases
+
+#include "__dso_handle.S"
+#include "__stack_chk_fail_local.S"
+/* NOTE: atexit() is  not be provided by crtbegin_static.S, but by libc.a */
+
diff --git a/ndk/platforms/android-9/arch-x86/src/crtend.S b/ndk/platforms/android-9/arch-x86/src/crtend.S
new file mode 100644
index 000000000..68447e7db
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/crtend.S
@@ -0,0 +1,15 @@
+	.section .preinit_array, "aw"
+	.long 0
+
+	.section .init_array, "aw"
+	.long 0
+
+	.section .fini_array, "aw"
+	.long 0
+
+	.section	.eh_frame,"a",@progbits
+	.align 4
+	.type	__FRAME_END__, @object
+	.size	__FRAME_END__, 4
+__FRAME_END__:
+	.zero	4
diff --git a/ndk/platforms/android-9/arch-x86/src/crtend_so.S b/ndk/platforms/android-9/arch-x86/src/crtend_so.S
new file mode 100644
index 000000000..63e58b970
--- /dev/null
+++ b/ndk/platforms/android-9/arch-x86/src/crtend_so.S
@@ -0,0 +1,12 @@
+.section .init_array, "aw"
+    .long 0
+
+.section .fini_array, "aw"
+    .long 0
+
+	.section	.eh_frame,"a",@progbits
+	.align 4
+	.type	__FRAME_END__, @object
+	.size	__FRAME_END__, 4
+__FRAME_END__:
+	.zero	4