116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/* $NetBSD: process_machdep.c,v 1.1 2000/08/20 15:16:51 bjh21 Exp $ */
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/*-
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* Copyright (c) 2000 Ben Harris
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* This file is part of NetBSD/arm26 -- a port of NetBSD to ARM2/3 machines. */
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/*
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* process_machdep.c - machine-dependent ptrace requests
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*/
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#include <sys/param.h>
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__RCSID("$NetBSD: process_machdep.c,v 1.1 2000/08/20 15:16:51 bjh21 Exp $");
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#include <sys/errno.h>
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#include <sys/proc.h>
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#include <sys/ptrace.h>
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#include <sys/user.h>
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#include <machine/armreg.h>
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#include <machine/frame.h>
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#include <machine/pcb.h>
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#include <machine/reg.h>
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int
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process_set_pc(struct proc *p, caddr_t addr)
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{
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struct trapframe *tf = p->p_addr->u_pcb.pcb_tf;
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if (tf == NULL)
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return EINVAL;
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/* Only set the PC, not the PSR */
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if (((register_t)addr & R15_PC) != (register_t)addr)
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return EINVAL;
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tf->tf_r15 = (tf->tf_r15 & ~R15_PC) | (register_t)addr;
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return 0;
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}
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int
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process_read_regs(struct proc *p, struct reg *regs)
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{
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struct trapframe *tf = p->p_addr->u_pcb.pcb_tf;
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if (tf == NULL)
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return EINVAL;
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regs->r[0] = tf->tf_r0;
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regs->r[1] = tf->tf_r1;
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regs->r[2] = tf->tf_r2;
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regs->r[3] = tf->tf_r3;
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regs->r[4] = tf->tf_r4;
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regs->r[5] = tf->tf_r5;
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regs->r[6] = tf->tf_r6;
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regs->r[7] = tf->tf_r7;
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regs->r[8] = tf->tf_r8;
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regs->r[9] = tf->tf_r9;
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regs->r[10] = tf->tf_r10;
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regs->r[11] = tf->tf_r11;
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regs->r[12] = tf->tf_r12;
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regs->r[13] = tf->tf_r13;
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regs->r_sp = tf->tf_r13; /* XXX */
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regs->r_lr = tf->tf_r14;
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regs->r_pc = tf->tf_r15; /* XXX name? */
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return 0;
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}
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int
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process_write_regs(struct proc *p, struct reg *regs)
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{
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struct trapframe *tf = p->p_addr->u_pcb.pcb_tf;
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if (tf == NULL)
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return EINVAL;
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if ((regs->r_pc & (R15_MODE | R15_IRQ_DISABLE | R15_FIQ_DISABLE)) != 0)
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return EPERM;
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tf->tf_r0 = regs->r[0];
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tf->tf_r1 = regs->r[1];
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tf->tf_r2 = regs->r[2];
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tf->tf_r3 = regs->r[3];
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tf->tf_r4 = regs->r[4];
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tf->tf_r5 = regs->r[5];
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tf->tf_r6 = regs->r[6];
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tf->tf_r7 = regs->r[7];
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tf->tf_r8 = regs->r[8];
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tf->tf_r9 = regs->r[9];
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tf->tf_r10 = regs->r[10];
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tf->tf_r11 = regs->r[11];
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tf->tf_r12 = regs->r[12];
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tf->tf_r13 = regs->r[13];
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tf->tf_r14 = regs->r_lr;
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tf->tf_r15 = regs->r_pc;
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return 0;
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}
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