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Annotation of sys/arch/m88k/m88k/process_machdep.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: process_machdep.c,v 1.3 2005/05/18 16:44:41 miod Exp $ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1993 The Regents of the University of California.
        !             5:  * Copyright (c) 1993 Jan-Simon Pendry
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * This code is derived from software contributed to Berkeley by
        !             9:  * Jan-Simon Pendry.
        !            10:  *
        !            11:  * Redistribution and use in source and binary forms, with or without
        !            12:  * modification, are permitted provided that the following conditions
        !            13:  * are met:
        !            14:  * 1. Redistributions of source code must retain the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer.
        !            16:  * 2. Redistributions in binary form must reproduce the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer in the
        !            18:  *    documentation and/or other materials provided with the distribution.
        !            19:  * 3. Neither the name of the University nor the names of its contributors
        !            20:  *    may be used to endorse or promote products derived from this software
        !            21:  *    without specific prior written permission.
        !            22:  *
        !            23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            33:  * SUCH DAMAGE.
        !            34:  *
        !            35:  * from: Id: procfs_i386.c,v 4.1 1993/12/17 10:47:45 jsp Rel
        !            36:  */
        !            37:
        !            38: /*
        !            39:  * This file may seem a bit stylized, but that so that it's easier to port.
        !            40:  * Functions to be implemented here are:
        !            41:  *
        !            42:  * process_read_regs(proc, regs)
        !            43:  *     Get the current user-visible register set from the process
        !            44:  *     and copy it into the regs structure (<machine/reg.h>).
        !            45:  *     The process is stopped at the time read_regs is called.
        !            46:  *
        !            47:  * process_write_regs(proc, regs)
        !            48:  *     Update the current register set from the passed in regs
        !            49:  *     structure.  Take care to avoid clobbering special CPU
        !            50:  *     registers or privileged bits in the PSL.
        !            51:  *     The process is stopped at the time write_regs is called.
        !            52:  *
        !            53:  * process_sstep(proc)
        !            54:  *     Arrange for the process to trap after executing a single instruction.
        !            55:  *
        !            56:  * process_set_pc(proc)
        !            57:  *     Set the process's program counter.
        !            58:  */
        !            59:
        !            60: #include <sys/param.h>
        !            61: #include <sys/systm.h>
        !            62: #include <sys/time.h>
        !            63: #include <sys/kernel.h>
        !            64: #include <sys/proc.h>
        !            65: #include <sys/user.h>
        !            66: #include <sys/vnode.h>
        !            67: #include <machine/psl.h>
        !            68: #include <machine/reg.h>
        !            69: #include <machine/trap.h>
        !            70: #include <sys/ptrace.h>
        !            71:
        !            72: int
        !            73: process_read_regs(p, regs)
        !            74:        struct proc *p;
        !            75:        struct reg *regs;
        !            76: {
        !            77:        bcopy((caddr_t)USER_REGS(p), (caddr_t)regs, sizeof(struct reg));
        !            78:        return (0);
        !            79: }
        !            80:
        !            81: #ifdef PTRACE
        !            82:
        !            83: int
        !            84: process_write_regs(p, regs)
        !            85:        struct proc *p;
        !            86:        struct reg *regs;
        !            87: {
        !            88:        bcopy((caddr_t)regs, (caddr_t)USER_REGS(p), sizeof(struct reg));
        !            89:        return (0);
        !            90: }
        !            91:
        !            92: /* process_sstep() is in trap.c */
        !            93:
        !            94: int
        !            95: process_set_pc(p, addr)
        !            96:        struct proc *p;
        !            97:        caddr_t addr;
        !            98: {
        !            99:        struct reg *regs;
        !           100:
        !           101:        regs = USER_REGS(p);
        !           102:        regs->sxip = (u_int)addr;
        !           103:        regs->snip = (u_int)addr + 4;
        !           104:        return (0);
        !           105: }
        !           106:
        !           107: #endif /* PTRACE */