| #include "FreeBSD-386-asm.s" |
| |
| /* |
| * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org> |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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 AUTHOR 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 AUTHOR 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 <sys/syscall.h> |
| #include <machine/asm.h> |
| |
| ENTRY(rfork_thread) |
| pushl %ebp |
| movl %esp, %ebp |
| pushl %esi |
| |
| /* |
| * Push thread info onto the new thread's stack |
| */ |
| movl 12(%ebp), %esi # get stack addr |
| |
| subl $4, %esi |
| movl 20(%ebp), %eax # get start argument |
| movl %eax, (%esi) |
| |
| subl $4, %esi |
| movl 16(%ebp), %eax # get start thread address |
| movl %eax, (%esi) |
| |
| /* |
| * Prepare and execute the thread creation syscall |
| */ |
| pushl 8(%ebp) |
| pushl $0 |
| movl $SYS_rfork, %eax |
| int $0x80 |
| jb 2f |
| |
| /* |
| * Check to see if we are in the parent or child |
| */ |
| cmpl $0, %edx |
| jnz 1f |
| addl $8, %esp |
| popl %esi |
| movl %ebp, %esp |
| popl %ebp |
| ret |
| .p2align 2 |
| |
| /* |
| * If we are in the child (new thread), then |
| * set-up the call to the internal subroutine. If it |
| * returns, then call __exit. |
| */ |
| 1: |
| movl %esi,%esp |
| popl %eax |
| call *%eax |
| addl $4, %esp |
| |
| /* |
| * Exit system call |
| */ |
| pushl %eax |
| pushl $0 |
| movl $SYS_exit, %eax |
| int $0x80 |
| |
| /* |
| * Branch here if the thread creation fails: |
| */ |
| 2: |
| addl $8, %esp |
| popl %esi |
| movl %ebp, %esp |
| popl %ebp |
| PIC_PROLOGUE |
| jmp PIC_PLT(_C_LABEL(__cerror)) |
| |