ptrace.S revision 1.14
11.14Smycroft/* $NetBSD: ptrace.S,v 1.14 2000/12/08 22:57:57 mycroft Exp $ */ 21.7Schristos 31.1Scgd/*- 41.1Scgd * Copyright (c) 1990 The Regents of the University of California. 51.1Scgd * All rights reserved. 61.1Scgd * 71.1Scgd * This code is derived from software contributed to Berkeley by 81.1Scgd * William Jolitz. 91.1Scgd * 101.1Scgd * Redistribution and use in source and binary forms, with or without 111.1Scgd * modification, are permitted provided that the following conditions 121.1Scgd * are met: 131.1Scgd * 1. Redistributions of source code must retain the above copyright 141.1Scgd * notice, this list of conditions and the following disclaimer. 151.1Scgd * 2. Redistributions in binary form must reproduce the above copyright 161.1Scgd * notice, this list of conditions and the following disclaimer in the 171.1Scgd * documentation and/or other materials provided with the distribution. 181.1Scgd * 3. All advertising materials mentioning features or use of this software 191.1Scgd * must display the following acknowledgement: 201.1Scgd * This product includes software developed by the University of 211.1Scgd * California, Berkeley and its contributors. 221.1Scgd * 4. Neither the name of the University nor the names of its contributors 231.1Scgd * may be used to endorse or promote products derived from this software 241.1Scgd * without specific prior written permission. 251.1Scgd * 261.1Scgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 271.1Scgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 281.1Scgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 291.1Scgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 301.1Scgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 311.1Scgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 321.1Scgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 331.1Scgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 341.1Scgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 351.1Scgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 361.1Scgd * SUCH DAMAGE. 371.2Sjtc * 381.2Sjtc * from: @(#)ptrace.s 5.1 (Berkeley) 4/23/90 391.1Scgd */ 401.1Scgd 411.7Schristos#include <machine/asm.h> 421.1Scgd#if defined(SYSLIBC_SCCS) && !defined(lint) 431.14Smycroft RCSID("$NetBSD: ptrace.S,v 1.14 2000/12/08 22:57:57 mycroft Exp $") 441.1Scgd#endif /* SYSLIBC_SCCS and not lint */ 451.1Scgd 461.1Scgd#include "SYS.h" 471.1Scgd 481.9Skleink .globl _C_LABEL(__errno) 491.9Skleink 501.1ScgdENTRY(ptrace) 511.9Skleink#ifdef PIC 521.9Skleink PIC_PROLOGUE 531.9Skleink call PIC_PLT(_C_LABEL(__errno)) 541.9Skleink PIC_EPILOGUE 551.9Skleink#else 561.9Skleink call _C_LABEL(__errno) 571.9Skleink#endif /* PIC */ 581.13Smycroft xorl %edx,%edx 591.13Smycroft movl %edx,(%eax) 601.14Smycroft SYSTRAP(ptrace) 611.5Smycroft jc err 621.1Scgd ret 631.1Scgderr: 641.5Smycroft#ifdef PIC 651.11Schristos PIC_PROLOGUE 661.12Smycroft mov PIC_GOT(CERROR), %ecx 671.12Smycroft PIC_EPILOGUE 681.12Smycroft jmp %ecx 691.5Smycroft#else 701.10Skleink jmp CERROR 711.5Smycroft#endif 72