1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <private/bionic_asm.h> 30#include <linux/errno.h> 31#include <linux/sched.h> 32 33// pid_t __bionic_clone(int flags, void* child_stack, pid_t* parent_tid, void* tls, pid_t* child_tid, int (*fn)(void*), void* arg); 34ENTRY(__bionic_clone) 35 .set noreorder 36 .cpload t9 37 .set reorder 38 39 # set up child stack 40 subu a1,16 41 lw t0,20(sp) # fn 42 lw t1,24(sp) # arg 43 sw t0,0(a1) # fn 44 sw t1,4(a1) # arg 45 46 # remainder of arguments are correct for clone system call 47 li v0,__NR_clone 48 syscall 49 50 bnez a3,.L__error_bc 51 52 beqz v0,.L__thread_start_bc 53 54 j ra 55 56.L__thread_start_bc: 57 # Clear return address in child so we don't unwind further. 58 li ra,0 59 60 lw a0,0(sp) # fn 61 lw a1,4(sp) # arg 62 63 # void __start_thread(int (*func)(void*), void *arg) 64 la t9,__start_thread 65 j t9 66 67.L__error_bc: 68 move a0,v0 69 la t9,__set_errno_internal 70 j t9 71END(__bionic_clone) 72.hidden __bionic_clone 73