diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/librthread/arch/alpha/rfork_thread.S | 77 |
1 files changed, 42 insertions, 35 deletions
diff --git a/lib/librthread/arch/alpha/rfork_thread.S b/lib/librthread/arch/alpha/rfork_thread.S index ef5bf6d01c6..8bbe879967d 100644 --- a/lib/librthread/arch/alpha/rfork_thread.S +++ b/lib/librthread/arch/alpha/rfork_thread.S @@ -1,50 +1,57 @@ -/* $OpenBSD: rfork_thread.S,v 1.1 2005/12/25 00:13:09 tedu Exp $ */ +/* $OpenBSD: rfork_thread.S,v 1.2 2005/12/25 00:21:59 miod Exp $ */ + /* - * Copyright (c) 2005 KUDO Takashi <takashi@crazyhack.net> + * Copyright (c) 2005, Miodrag Vallat * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. + * 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. * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * 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 <machine/asm.h> -#include "../../../libc/arch/alpha/SYS.h" +#include "../../../libc/arch/alpha/SYS.h" /* - * a0 a1 a2 a3 * int rfork_thread(int flags, void *stack, void (*func)(void *), void *arg); */ - .globl rfork_thread - .ent rfork_thread -rfork_thread: - LDGP(pv) - lda sp, -16(sp) - stq ra, 0(sp) - .frame sp, 16, ra - .prologue 1 - +LEAF(rfork_thread,0) + /* a0 = flags, a1 = stack, a2 = func, a3 = arg */ + mov a3, a5 CALLSYS_ERROR(rfork) - beq v0, 1f - /* parent process */ - ldq ra, 0(sp) - lda sp, 16(sp) + beq v0, 1f + + /* + * In parent process: just return. + */ RET 1: - /* child process */ - mov a1, sp /* setup stack */ - mov a3, a0 - jsr ra, (a2), 0 /* funcall func(arg) */ - LDGP(ra) + /* + * In child process: switch stack, invoke function, then exit. + */ + mov a1, sp /* stack */ + mov a5, a0 /* arg */ + mov a2, pv /* func */ + jsr ra, (pv) - CALLSYS_ERROR(threxit) - .end rfork_thread + mov zero, a0 + CALLSYS_NOERROR(threxit) + +END(rfork_thread) |