ptrace.S revision 1.8 
11.8Sthorpej/*	$NetBSD: ptrace.S,v 1.8 1998/07/01 06:24:25 thorpej Exp $	*/
21.7Schristos
31.1Scgd/*-
41.1Scgd * Copyright (c) 1990 The Regents of the University of California.
51.1Scgd * All rights reserved.
61.1Scgd *
71.1Scgd * This code is derived from software contributed to Berkeley by
81.1Scgd * William Jolitz.
91.1Scgd *
101.1Scgd * Redistribution and use in source and binary forms, with or without
111.1Scgd * modification, are permitted provided that the following conditions
121.1Scgd * are met:
131.1Scgd * 1. Redistributions of source code must retain the above copyright
141.1Scgd *    notice, this list of conditions and the following disclaimer.
151.1Scgd * 2. Redistributions in binary form must reproduce the above copyright
161.1Scgd *    notice, this list of conditions and the following disclaimer in the
171.1Scgd *    documentation and/or other materials provided with the distribution.
181.1Scgd * 3. All advertising materials mentioning features or use of this software
191.1Scgd *    must display the following acknowledgement:
201.1Scgd *	This product includes software developed by the University of
211.1Scgd *	California, Berkeley and its contributors.
221.1Scgd * 4. Neither the name of the University nor the names of its contributors
231.1Scgd *    may be used to endorse or promote products derived from this software
241.1Scgd *    without specific prior written permission.
251.1Scgd *
261.1Scgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
271.1Scgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
281.1Scgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
291.1Scgd * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
301.1Scgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
311.1Scgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
321.1Scgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
331.1Scgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
341.1Scgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
351.1Scgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
361.1Scgd * SUCH DAMAGE.
371.2Sjtc *
381.2Sjtc *	from: @(#)ptrace.s	5.1 (Berkeley) 4/23/90
391.1Scgd */
401.1Scgd
411.7Schristos#include <machine/asm.h>
421.1Scgd#if defined(SYSLIBC_SCCS) && !defined(lint)
431.8Sthorpej	RCSID("$NetBSD: ptrace.S,v 1.8 1998/07/01 06:24:25 thorpej Exp $")
441.1Scgd#endif /* SYSLIBC_SCCS and not lint */
451.1Scgd
461.1Scgd#include "SYS.h"
471.1Scgd
481.1ScgdENTRY(ptrace)
491.5Smycroft#ifdef PIC
501.1Scgd	xorl	%eax,%eax
511.1Scgd	PIC_PROLOGUE
521.8Sthorpej	movl	PIC_GOT(_C_LABEL(errno)),%edx
531.5Smycroft	PIC_EPILOGUE
541.1Scgd	movl	%eax,(%edx)
551.1Scgd#else
561.8Sthorpej	movl	$0,_C_LABEL(errno)
571.1Scgd#endif
581.4Smycroft	movl	$(SYS_ptrace),%eax
591.6Smycroft	int	$0x80
601.5Smycroft	jc	err
611.1Scgd	ret
621.1Scgderr:
631.5Smycroft#ifdef PIC
641.3Spk	jmp	PIC_PLT(cerror)
651.5Smycroft#else
661.5Smycroft	jmp	cerror
671.5Smycroft#endif
68