1/* 2 * Copyright (C) 2009 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#include <sys/linux-syscalls.h> 29 30.text 31.type __pthread_clone, @function 32.globl __pthread_clone 33.align 4 34 35__pthread_clone: 36 /* insert the args onto the new stack */ 37 mov r5, r0 38 mov.l r4, @-r0 /* func */ 39 mov.l r7, @-r0 /* arg */ 40 41 /* do the system call */ 42 mov r6, r4 /* Set clone_flags. new sp is ready in r5. */ 43 mov.l 0f, r3 44 trapa #(4 + 0x10) 45 46 /* check error */ 47 cmp/pz r0 48 bf __error 49 50 /* check if parent or child */ 51 cmp/pl r0 52 bt __return 53 54 /* prepare args for __thread_entry */ 55 mov #8, r1 56 sub r1, r15 /* -8 */ 57 mov.l @r15+, r5 /* +4 */ /* arg */ 58 mov.l @r15+, r4 /* +4 */ /* func */ 59 mov r15, r6 /* tls */ 60 61 /* jump to __thread_entry */ 62 mov.l 1f, r0 63 jmp @r0 64 nop 65 66__error: 67 mov #-1, r0 68__return: 69 rts 70 nop 71 72 .align 2 730: .long __NR_clone 741: .long __thread_entry 75 76/* XXX: TODO: Add __bionic_clone here 77 * See bionic/bionic_clone.c and arch-arm/bionic/clone.S 78 * for more details... 79 */