ptrace.S revision 1.5
1 /* $NetBSD: ptrace.S,v 1.5 2003/08/07 16:42:21 agc Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * from: @(#)ptrace.s 5.1 (Berkeley) 4/23/90 35 */ 36 37 #include <machine/asm.h> 38 #if defined(SYSLIBC_SCCS) && !defined(lint) 39 RCSID("$NetBSD: ptrace.S,v 1.5 2003/08/07 16:42:21 agc Exp $") 40 #endif /* SYSLIBC_SCCS and not lint */ 41 42 #include "SYS.h" 43 44 ENTRY(ptrace) 45 #ifdef PIC 46 mova L_GOT, r0 47 mov.l L_GOT, r1 48 add r0, r1 49 mov.l L_errno, r0 50 mov.l @(r0, r1), r0 51 #else 52 mov.l L_errno, r0 53 #endif 54 xor r1, r1 55 mov.l r1, @r0 56 mov.l LSYS_ptrace, r0 57 trapa #0x80 58 bf err 59 rts 60 nop 61 err: 62 mov.l Lcerror, r1 63 #ifdef PIC 64 bsrf r1 65 #else 66 jmp @r1 67 #endif 68 nop 69 1: 70 71 .align 2 72 LSYS_ptrace: .long SYS_ptrace 73 #ifdef PIC 74 L_GOT: .long _GLOBAL_OFFSET_TABLE_ 75 L_errno: .long _C_LABEL(errno)@GOT 76 Lcerror: .long cerror-1b 77 #else 78 L_errno: .long _C_LABEL(errno) 79 Lcerror: .long cerror 80 #endif 81 82 83
Indexes created Sun Sep 28 16:09:52 GMT 2025