954cf0d4e2
clone(2) is the public symbol. Also switch a test from __bionic_clone to clone; testing public API means the test now works on glibc too. Change-Id: If59def26a00c3afadb8a6cf9442094c35a59ffde
64 lines
2.2 KiB
ArmAsm
64 lines
2.2 KiB
ArmAsm
/*
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* Copyright (C) 2013 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <private/bionic_asm.h>
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// pid_t __bionic_clone(int flags, void* child_stack, pid_t* parent_tid, void* tls, pid_t* child_tid, int (*fn)(void*), void* arg);
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ENTRY(__bionic_clone)
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stp x29, x30, [sp, #-16]!
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mov x29, sp
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str x8, [sp, #-16]!
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/* store thread pointer & args in child stack */
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stp x5, x6, [x1, #-16]
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/* sys_clone */
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uxtw x0, w0
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mov x8, __NR_clone
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svc #0
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/* check for child/parent */
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cbz x0,1f
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ldr x8, [sp], #16
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ldp x29, x30, [sp], #16
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cmn x0, #(MAX_ERRNO + 1)
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cneg x0, x0, hi
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b.hi __set_errno
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ret
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/* thread initialization - set the end of the frame record chain */
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1:
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mov x29, xzr
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ldp x0, x1, [sp, #-16]
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b __bionic_clone_entry
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END(__bionic_clone)
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.hidden __bionic_clone
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