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ptrace.S revision 1.5.6.1 
      1  1.5.6.1      tron /*	$NetBSD: ptrace.S,v 1.5.6.1 2006/01/11 17:13:42 tron Exp $	*/
      2      1.3  christos 
      3      1.1       cgd /*
      4      1.1       cgd  * Copyright (c) 1992, 1993
      5      1.1       cgd  *	The Regents of the University of California.  All rights reserved.
      6      1.1       cgd  *
      7      1.1       cgd  * This software was developed by the Computer Systems Engineering group
      8      1.1       cgd  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9      1.1       cgd  * contributed to Berkeley.
     10      1.1       cgd  *
     11      1.1       cgd  * Redistribution and use in source and binary forms, with or without
     12      1.1       cgd  * modification, are permitted provided that the following conditions
     13      1.1       cgd  * are met:
     14      1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     15      1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     16      1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     17      1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     18      1.1       cgd  *    documentation and/or other materials provided with the distribution.
     19      1.5       agc  * 3. Neither the name of the University nor the names of its contributors
     20      1.1       cgd  *    may be used to endorse or promote products derived from this software
     21      1.1       cgd  *    without specific prior written permission.
     22      1.1       cgd  *
     23      1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24      1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25      1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26      1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27      1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28      1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29      1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30      1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31      1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32      1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33      1.1       cgd  * SUCH DAMAGE.
     34      1.1       cgd  *
     35      1.1       cgd  * from: Header: ptrace.s,v 1.2 91/12/20 01:59:00 leres Exp
     36      1.1       cgd  */
     37      1.1       cgd 
     38      1.3  christos #include <machine/asm.h>
     39      1.3  christos #if defined(SYSLIBC_SCCS) && !defined(lint)
     40      1.3  christos #if 0
     41      1.1       cgd 	.asciz "@(#)ptrace.s	8.1 (Berkeley) 6/4/93"
     42      1.3  christos #else
     43  1.5.6.1      tron 	RCSID("$NetBSD: ptrace.S,v 1.5.6.1 2006/01/11 17:13:42 tron Exp $")
     44      1.3  christos #endif
     45      1.3  christos #endif /* SYSLIBC_SCCS and not lint */
     46      1.1       cgd 
     47      1.1       cgd #include "SYS.h"
     48      1.1       cgd 
     49      1.1       cgd ENTRY(ptrace)
     50  1.5.6.1      tron #ifdef _REENTRANT
     51  1.5.6.1      tron 	save	%sp, -CCFSZ, %sp
     52  1.5.6.1      tron 	call	_C_LABEL(__errno)
     53  1.5.6.1      tron 	 nop
     54  1.5.6.1      tron 	st	%g0, [%o0]
     55  1.5.6.1      tron 	restore	%g0, 0, %g0
     56  1.5.6.1      tron #else
     57      1.2        pk #ifdef PIC
     58      1.2        pk 	PIC_PROLOGUE(%g1,%g2)
     59      1.4        tv 	ld	[%g1 + _C_LABEL(errno)], %g1
     60      1.2        pk 	st	%g0, [%g1]
     61      1.2        pk #else
     62      1.4        tv 	sethi	%hi(_C_LABEL(errno)), %g1
     63      1.4        tv 	st	%g0, [%g1 + %lo(_C_LABEL(errno))]
     64      1.2        pk #endif
     65  1.5.6.1      tron #endif /* !_REENTRANT */
     66      1.1       cgd 	mov	SYS_ptrace, %g1
     67      1.1       cgd 	t	ST_SYSCALL
     68      1.1       cgd 	bcc	1f
     69  1.5.6.1      tron 	 nop
     70      1.1       cgd 	ERROR()
     71      1.1       cgd 1:
     72      1.1       cgd 	retl
     73  1.5.6.1      tron 	 nop
     74