Return to process_machdep.c CVS log

Up to [local] / sys / arch / m88k / m88k

Annotation of sys/arch/m88k/m88k/process_machdep.c, Revision 1.1.1.1

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 */