ptrace.S revision 1.5
11.5Sthorpej/* $NetBSD: ptrace.S,v 1.5 2002/08/17 19:54:32 thorpej 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. 151.1Sbjh21 * 3. All advertising materials mentioning features or use of this software 161.1Sbjh21 * must display the following acknowledgement: 171.1Sbjh21 * This product includes software developed by the University of 181.1Sbjh21 * California, Berkeley and its contributors. 191.1Sbjh21 * 4. Neither the name of the University nor the names of its contributors 201.1Sbjh21 * may be used to endorse or promote products derived from this software 211.1Sbjh21 * without specific prior written permission. 221.1Sbjh21 * 231.1Sbjh21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 241.1Sbjh21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 251.1Sbjh21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 261.1Sbjh21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 271.1Sbjh21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 281.1Sbjh21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 291.1Sbjh21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 301.1Sbjh21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 311.1Sbjh21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 321.1Sbjh21 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 331.1Sbjh21 * SUCH DAMAGE. 341.1Sbjh21 * 351.1Sbjh21 * from: @(#)ptrace.s 5.1 (Berkeley) 4/23/90 361.1Sbjh21 */ 371.1Sbjh21 381.1Sbjh21#include "SYS.h" 391.1Sbjh21 401.1Sbjh21ENTRY(ptrace) 411.1Sbjh21#ifdef _REENTRANT 421.1Sbjh21 stmfd sp!, {r0-r3, lr} 431.4Schris sub sp, sp, #4 /* align stack */ 441.3Smatt bl PIC_SYM(_C_LABEL(__errno), PLT) 451.4Schris add sp, sp, #4 /* unalign stack */ 461.1Sbjh21 mov r1, #0x00000000 471.1Sbjh21 str r1, [r0] 481.1Sbjh21 ldmfd sp!, {r0-r3, lr} 491.1Sbjh21#else 501.1Sbjh21 stmfd sp!, {r0, r1} 511.1Sbjh21#ifdef PIC 521.1Sbjh21 /* Setup the GOT */ 531.5Sthorpej ldr r0, .Lgot 541.1Sbjh21 add r0, pc, r0 551.3Smatt.L1: 561.5Sthorpej ldr r1, .Lerrno 571.1Sbjh21 ldr r1, [r0, r1] 581.1Sbjh21#else 591.5Sthorpej ldr r1, .Lerrno 601.1Sbjh21#endif /* PIC */ 611.1Sbjh21 mov r0, #0x00000000 621.1Sbjh21 str r0, [r1] 631.1Sbjh21 ldmfd sp!, {r0, r1} 641.1Sbjh21#endif /* _REENTRANT */ 651.1Sbjh21 661.2Sbjh21 SYSTRAP(ptrace) 671.3Smatt bcs PIC_SYM(CERROR, PLT) 681.1Sbjh21#ifdef __APCS_26__ 691.1Sbjh21 movs pc, lr 701.1Sbjh21#else 711.1Sbjh21 mov pc, lr 721.1Sbjh21#endif 731.1Sbjh21 741.1Sbjh21#ifndef _REENTRANT 751.1Sbjh21#ifdef PIC 761.1Sbjh21 .align 0 771.5Sthorpej.Lgot: 781.3Smatt .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (.L1+4)) 791.1Sbjh21#endif /* PIC */ 801.1Sbjh21 811.5Sthorpej.Lerrno: 821.3Smatt .word PIC_SYM(_C_LABEL(errno), GOT) 831.1Sbjh21#endif /* !_REENTRANT */ 84