1/* $NetBSD: ptrace.S,v 1.9 2013/09/12 15:36:16 joerg Exp $ */ 2 3/* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Header: ptrace.s,v 1.2 91/12/20 01:59:00 leres Exp 36 */ 37 38#include <machine/asm.h> 39#if defined(SYSLIBC_SCCS) && !defined(lint) 40#if 0 41 .asciz "@(#)ptrace.s 8.1 (Berkeley) 6/4/93" 42#else 43 RCSID("$NetBSD: ptrace.S,v 1.9 2013/09/12 15:36:16 joerg Exp $") 44#endif 45#endif /* SYSLIBC_SCCS and not lint */ 46 47#include "SYS.h" 48 49ENTRY(ptrace) 50#ifdef _REENTRANT 51 save %sp, -CCFSZ, %sp 52 call _C_LABEL(__errno) 53 nop 54 st %g0, [%o0] 55 restore 56#else 57#ifdef __PIC__ 58 PIC_PROLOGUE(%g1,%g2) 59 set _C_LABEL(errno), %g2 60 ld [%g1 + %g2], %g1 61 st %g0, [%g1] 62#else 63 sethi %hi(_C_LABEL(errno)), %g1 64 st %g0, [%g1 + %lo(_C_LABEL(errno))] 65#endif 66#endif /* !_REENTRANT */ 67 mov SYS_ptrace, %g1 68 t ST_SYSCALL 69 bcc 1f 70 nop 71 ERROR() 721: 73 retl 74 nop 75