ptrace.S revision 1.7
11.7Sagc/* $NetBSD: ptrace.S,v 1.7 2003/08/07 16:42:04 agc Exp $ */ 21.1Sbjh21 31.1Sbjh21/*- 41.1Sbjh21 * Copyright (c) 1990 The Regents of the University of California. 51.1Sbjh21 * All rights reserved. 61.1Sbjh21 * 71.1Sbjh21 * Redistribution and use in source and binary forms, with or without 81.1Sbjh21 * modification, are permitted provided that the following conditions 91.1Sbjh21 * are met: 101.1Sbjh21 * 1. Redistributions of source code must retain the above copyright 111.1Sbjh21 * notice, this list of conditions and the following disclaimer. 121.1Sbjh21 * 2. Redistributions in binary form must reproduce the above copyright 131.1Sbjh21 * notice, this list of conditions and the following disclaimer in the 141.1Sbjh21 * documentation and/or other materials provided with the distribution. 151.7Sagc * 3. Neither the name of the University nor the names of its contributors 161.1Sbjh21 * may be used to endorse or promote products derived from this software 171.1Sbjh21 * without specific prior written permission. 181.1Sbjh21 * 191.1Sbjh21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 201.1Sbjh21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 211.1Sbjh21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 221.1Sbjh21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 231.1Sbjh21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 241.1Sbjh21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 251.1Sbjh21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 261.1Sbjh21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 271.1Sbjh21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 281.1Sbjh21 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 291.1Sbjh21 * SUCH DAMAGE. 301.1Sbjh21 * 311.1Sbjh21 * from: @(#)ptrace.s 5.1 (Berkeley) 4/23/90 321.1Sbjh21 */ 331.1Sbjh21 341.1Sbjh21#include "SYS.h" 351.1Sbjh21 361.1Sbjh21ENTRY(ptrace) 371.1Sbjh21#ifdef _REENTRANT 381.1Sbjh21 stmfd sp!, {r0-r3, lr} 391.4Schris sub sp, sp, #4 /* align stack */ 401.3Smatt bl PIC_SYM(_C_LABEL(__errno), PLT) 411.4Schris add sp, sp, #4 /* unalign stack */ 421.1Sbjh21 mov r1, #0x00000000 431.1Sbjh21 str r1, [r0] 441.1Sbjh21 ldmfd sp!, {r0-r3, lr} 451.1Sbjh21#else 461.1Sbjh21 stmfd sp!, {r0, r1} 471.1Sbjh21#ifdef PIC 481.1Sbjh21 /* Setup the GOT */ 491.5Sthorpej ldr r0, .Lgot 501.1Sbjh21 add r0, pc, r0 511.3Smatt.L1: 521.5Sthorpej ldr r1, .Lerrno 531.1Sbjh21 ldr r1, [r0, r1] 541.1Sbjh21#else 551.5Sthorpej ldr r1, .Lerrno 561.1Sbjh21#endif /* PIC */ 571.1Sbjh21 mov r0, #0x00000000 581.1Sbjh21 str r0, [r1] 591.1Sbjh21 ldmfd sp!, {r0, r1} 601.1Sbjh21#endif /* _REENTRANT */ 611.1Sbjh21 621.2Sbjh21 SYSTRAP(ptrace) 631.3Smatt bcs PIC_SYM(CERROR, PLT) 641.1Sbjh21 mov pc, lr 651.1Sbjh21 661.1Sbjh21#ifndef _REENTRANT 671.1Sbjh21#ifdef PIC 681.1Sbjh21 .align 0 691.5Sthorpej.Lgot: 701.3Smatt .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (.L1+4)) 711.1Sbjh21#endif /* PIC */ 721.1Sbjh21 731.5Sthorpej.Lerrno: 741.3Smatt .word PIC_SYM(_C_LABEL(errno), GOT) 751.1Sbjh21#endif /* !_REENTRANT */ 76