77 lines
2.3 KiB
ArmAsm
77 lines
2.3 KiB
ArmAsm
/*
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* Copyright (C) 2008 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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#include <linux/sched.h>
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// TODO: mips' uapi signal.h is missing #ifndef __ASSEMBLY__.
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// #include <asm/signal.h>
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#define SIGCHLD 18
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.text
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#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
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FRAMESZ = MKFSIZ(5,0)
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#else
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FRAMESZ = MKFSIZ(0,0)
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#endif
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LEAF(vfork,FRAMESZ)
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#if FRAMESZ!=0
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PTR_SUBU sp, FRAMESZ
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#endif
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SETUP_GP64(a5, vfork)
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// __get_tls()[TLS_SLOT_THREAD_ID]->cached_pid_ = 0
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rdhwr v0, $29 // v0 = tls
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REG_L v0, REGSZ*1(v0) // v0 = v0[TLS_SLOT_THREAD_ID ie 1]
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sw $0, REGSZ*2+4(v0) // v0->cached_pid_ = 0
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LI a0, (CLONE_VM | CLONE_VFORK | SIGCHLD)
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move a1, $0
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move a2, $0
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move a3, $0
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#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
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REG_S $0, 4*REGSZ(sp)
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#else
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move a4, $0
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#endif
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LI v0, __NR_clone
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syscall
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#if FRAMESZ!=0
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PTR_ADDU sp,FRAMESZ
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#endif
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move a0, v0
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bnez a3, 1f
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RESTORE_GP64
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j ra
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1:
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LA t9,__set_errno_internal
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RESTORE_GP64
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j t9
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END(vfork)
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