diff options
Diffstat (limited to 'lib/libc/amd64/gen/rfork_thread.S')
| -rw-r--r-- | lib/libc/amd64/gen/rfork_thread.S | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/lib/libc/amd64/gen/rfork_thread.S b/lib/libc/amd64/gen/rfork_thread.S deleted file mode 100644 index a3c64fad7994..000000000000 --- a/lib/libc/amd64/gen/rfork_thread.S +++ /dev/null @@ -1,93 +0,0 @@ -/*- - * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org> - * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu> - * 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 <machine/asm.h> -/* - * With thanks to John Dyson for the original version of this. - */ - -#include <SYS.h> - -/* - * %edi %rsi %rdx %rcx - * rfork_thread(flags, stack_addr, start_fnc, start_arg); - * - * flags: Flags to rfork system call. See rfork(2). - * stack_addr: Top of stack for thread. - * start_fnc: Address of thread function to call in child. - * start_arg: Argument to pass to the thread function in child. - */ - -ENTRY(rfork_thread) - pushq %rbx - pushq %r12 - movq %rdx, %rbx - movq %rcx, %r12 - - /* - * Prepare and execute the thread creation syscall - */ - movq $SYS_rfork, %rax - KERNCALL - jb 2f - - /* - * Check to see if we are in the parent or child - */ - cmpl $0, %edx - jnz 1f - popq %r12 - popq %rbx - ret - - /* - * If we are in the child (new thread), then - * set-up the call to the internal subroutine. If it - * returns, then call __exit. - */ -1: - movq %rsi, %rsp - movq %r12, %rdi - call *%rbx - movl %eax, %edi - - /* - * Exit system call - */ - movq $SYS_exit, %rax - KERNCALL - - /* - * Branch here if the thread creation fails: - */ -2: - popq %r12 - popq %rbx - jmp HIDENAME(cerror) -END(rfork_thread) - - .section .note.GNU-stack,"",%progbits |