diff options
Diffstat (limited to 'lib/libc/arch/m88k/sys/tfork_thread.S')
| -rw-r--r-- | lib/libc/arch/m88k/sys/tfork_thread.S | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/lib/libc/arch/m88k/sys/tfork_thread.S b/lib/libc/arch/m88k/sys/tfork_thread.S new file mode 100644 index 00000000000..351d93151da --- /dev/null +++ b/lib/libc/arch/m88k/sys/tfork_thread.S @@ -0,0 +1,55 @@ +/* $OpenBSD: tfork_thread.S,v 1.1 2012/03/22 00:44:55 guenther Exp $ */ + +/* + * Copyright (c) 2005, Miodrag Vallat + * + * 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 ``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 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.h" + +/* + * int __tfork_thread(const struct __tfork *param, void *stack, void (*func)(void *), void *arg); + */ +ENTRY(__tfork_thread) + or r6, r3, r0 /* save stack */ + or r13, r0, __SYSCALLNAME(SYS_,__tfork) + tb0 0, r0, 128 /* corrupts r2 and r3 in the child */ + br __cerror + + bcnd eq0, r2, 1f + + /* + * In parent process: just return. + */ + jmp r1 + +1: + /* + * In child process: switch stack, invoke function, then exit. + */ + or r31, r6, r0 /* stack */ + jsr.n r4 /* func */ + or r2, r5, r0 /* arg */ + + or r13, r0, __SYSCALLNAME(SYS_,__threxit) + tb0 0, r0, 128 |