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Annotation of src/lib/libc/arch/x86_64/sys/ptrace.S, Revision 1.1

1.1     ! fvdl        1: /*     $NetBSD: ptrace.S,v 1.14 2000/12/08 22:57:57 mycroft 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. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed by the University of
        !            21:  *     California, Berkeley and its contributors.
        !            22:  * 4. Neither the name of the University nor the names of its contributors
        !            23:  *    may be used to endorse or promote products derived from this software
        !            24:  *    without specific prior written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            36:  * SUCH DAMAGE.
        !            37:  *
        !            38:  *     from: @(#)ptrace.s      5.1 (Berkeley) 4/23/90
        !            39:  */
        !            40:
        !            41: #include <machine/asm.h>
        !            42: #if defined(SYSLIBC_SCCS) && !defined(lint)
        !            43:        RCSID("$NetBSD: ptrace.S,v 1.14 2000/12/08 22:57:57 mycroft Exp $")
        !            44: #endif /* SYSLIBC_SCCS and not lint */
        !            45:
        !            46: #include "SYS.h"
        !            47:
        !            48:        .globl  _C_LABEL(__errno)
        !            49:
        !            50: ENTRY(ptrace)
        !            51: #ifdef PIC
        !            52:        call    PIC_PLT(_C_LABEL(__errno))
        !            53: #else
        !            54:        call    _C_LABEL(__errno)
        !            55: #endif /* PIC */
        !            56:        movl    $0,(%rax)
        !            57:        SYSTRAP(ptrace)
        !            58:        jc      err
        !            59:        ret
        !            60: err:
        !            61: #ifdef PIC
        !            62:        movq    PIC_GOT(CERROR), %rcx
        !            63:        jmp     *%rcx
        !            64: #else
        !            65:        jmp     CERROR
        !            66: #endif