zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/i386/clone.S b/ap/build/uClibc/libc/sysdeps/linux/i386/clone.S
new file mode 100644
index 0000000..a7de3fe
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/i386/clone.S
@@ -0,0 +1,131 @@
+/* Copyright (C) 1996-2000,02,03,04,2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@tamu.edu)
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* clone() is even more special than fork() as it mucks with stacks
+ and invokes a function in the right context after its all over.
+
+ Hacked up for uClibc by Erik Andersen <andersen@codepoet.org>
+*/
+
+#define _ERRNO_H 1
+#include <bits/errno.h>
+#include <sys/syscall.h>
+
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
+ pid_t *ptid, struct user_desc *tls, pid_t *ctid); */
+
+#define LINKAGE 4
+#define PTR_SIZE 4
+#define PARMS LINKAGE /* no space for saved regs */
+#define FUNC PARMS
+#define STACK FUNC+4
+#define FLAGS STACK+PTR_SIZE
+#define ARG FLAGS+4
+#define PTID ARG+PTR_SIZE
+#define TLS PTID+PTR_SIZE
+#define CTID TLS+PTR_SIZE
+
+.text
+.global clone
+.type clone,%function
+clone:
+ /* Sanity check arguments. */
+ movl $-EINVAL,%eax
+
+ /* no NULL function pointers */
+ movl FUNC(%esp),%ecx
+#ifdef __PIC__
+ jecxz __error
+#else
+ testl %ecx,%ecx
+ jz __error
+#endif
+
+ /* no NULL stack pointers */
+ movl STACK(%esp),%ecx
+#ifdef __PIC__
+ jecxz __error
+#else
+ testl %ecx,%ecx
+ jz __error
+#endif
+
+ /* Insert the argument onto the new stack. Make sure the new
+ thread is started with an alignment of (mod 16). */
+ andl $0xfffffff0, %ecx
+ subl $28,%ecx
+ movl ARG(%esp),%eax /* no negative argument counts */
+ movl %eax,12(%ecx)
+
+ /* Save the function pointer as the zeroth argument.
+ It will be popped off in the child in the ebx frobbing below. */
+ movl FUNC(%esp),%eax
+ movl %eax,8(%ecx)
+ /* Don't leak any information. */
+ movl $0,4(%ecx)
+#ifndef RESET_PID
+ movl $0,(%ecx)
+#endif
+
+
+ /* Do the system call */
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+ movl TLS+12(%esp),%esi
+ movl PTID+12(%esp),%edx
+ movl FLAGS+12(%esp),%ebx
+ movl CTID+12(%esp),%edi
+ movl $__NR_clone,%eax
+#ifdef RESET_PID
+ /* Remember the flag value. */
+ movl %ebx, (%ecx)
+#endif
+ int $0x80
+ popl %edi
+ popl %esi
+ popl %ebx
+
+ test %eax,%eax
+ jl __error
+ jz .Lthread_start
+ ret
+
+.Lthread_start:
+ /* Note: %esi is zero. */
+ movl %esi,%ebp /* terminate the stack frame */
+ call *%ebx
+#ifdef __PIC__
+ call .Lhere
+.Lhere:
+ popl %ebx
+ addl $_GLOBAL_OFFSET_TABLE_+[.-.Lhere], %ebx
+#endif
+ movl %eax, %ebx
+ movl $__NR_exit, %eax
+ int $0x80
+
+/* Need to indirect jump to syscall error
+ * or we end up with TEXTREL's
+ */
+__error:
+ jmp __syscall_error
+
+.size clone,.-clone
+weak_alias(clone, __clone)