| Shin-ichiro KAWASAKI | 1009327 | 2009-09-28 16:11:39 +0900 | [diff] [blame^] | 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 |
| 73 | 0: .long __NR_clone |
| 74 | 1: .long __thread_entry |