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Removed unused special fork() implementations.

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The arm version hasn't been used in ages.

The mips version uses a valid, but pointless check of v1 and has been
unhooked from the build since r276630.

Differential Revision:	https://reviews.freebsd.org/D2592
Reviewed by:	emaste
Sponsored by:	DARPA, AFRL
This commit is contained in:
Brooks Davis 2015-05-29 19:42:55 +00:00
parent aef68c961a
commit 0aa6527ff0
3 changed files with 1 additions and 107 deletions
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49
lib/libc/arm/sys/fork.S
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@ -1,49 +0,0 @@
/* $NetBSD: fork.S,v 1.5 2003/08/07 16:42:04 agc Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* from: @(#)fork.s 5.1 (Berkeley) 4/23/90
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
#include "SYS.h"
/*
* pid = fork();
*
* On return from the SWI:
* r1 == 0 in parent process, r1 == 1 in child process.
* r0 == pid of child in parent, r0 == pid of parent in child.
*/
_SYSCALL(fork)
sub r1, r1, #1 /* r1 == 0xffffffff if parent, 0 if child */
and r0, r0, r1 /* r0 == 0 if child, else unchanged */
RET

2
lib/libc/mips/sys/Makefile.inc
View File

@ -3,7 +3,7 @@
SRCS+= trivial-vdso_tc.c
MDASM= Ovfork.S brk.S cerror.S exect.S \
fork.S pipe.S ptrace.S sbrk.S syscall.S
pipe.S ptrace.S sbrk.S syscall.S
# Don't generate default code for these syscalls:
NOASM= break.o exit.o getlogin.o openbsd_poll.o sstk.o vfork.o yield.o

57
lib/libc/mips/sys/fork.S
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@ -1,57 +0,0 @@
/* $NetBSD: fork.S,v 1.11 2003/08/07 16:42:17 agc Exp $ */
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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>
__FBSDID("$FreeBSD$");
#include "SYS.h"
#if defined(LIBC_SCCS) && !defined(lint)
ASMSTR("from: @(#)fork.s 8.1 (Berkeley) 6/4/93")
ASMSTR("$NetBSD: fork.S,v 1.11 2003/08/07 16:42:17 agc Exp $")
#endif /* LIBC_SCCS and not lint */
LEAF(__sys_fork)
WEAK_ALIAS(fork, __sys_fork)
WEAK_ALIAS(_fork, __sys_fork)
PIC_PROLOGUE(__sys_fork)
li v0, SYS_fork # pid = fork()
syscall
bne a3, zero, 2f
beq v1, zero, 1f # v1 == 0 in parent, 1 in child
move v0, zero
1:
PIC_RETURN()
2:
PIC_TAILCALL(__cerror)
END(__sys_fork)