| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <asm/unistd.h> |
| #include <linux/errno.h> |
| #include <linux/sched.h> |
| |
| // pid_t __bionic_clone(int flags, void* child_stack, pid_t* parent_tid, void* tls, pid_t* child_tid, int (*fn)(void*), void* arg); |
| .text |
| .type __bionic_clone, @function |
| .global __bionic_clone |
| .align 4 |
| .ent __bionic_clone |
| __bionic_clone: |
| .set noreorder |
| .cpload $t9 |
| .set reorder |
| |
| # set up child stack |
| subu $a1,16 |
| lw $t0,20($sp) # fn |
| lw $t1,24($sp) # arg |
| sw $t0,0($a1) # fn |
| sw $t1,4($a1) # arg |
| |
| # remainder of arguments are correct for clone system call |
| li $v0,__NR_clone |
| syscall |
| |
| bnez $a3,.L__error_bc |
| |
| beqz $v0,.L__thread_start_bc |
| |
| j $ra |
| |
| .L__thread_start_bc: |
| lw $a0,0($sp) # fn |
| lw $a1,4($sp) # arg |
| |
| # void __bionic_clone_entry(int (*func)(void*), void *arg) |
| la $t9,__bionic_clone_entry |
| j $t9 |
| |
| .L__error_bc: |
| move $a0,$v0 |
| la $t9,__set_errno |
| j $t9 |
| |
| .end __bionic_clone |