1/*	$NetBSD: ptrace.h,v 1.19 2021/03/18 23:18:36 simonb Exp $	*/
  2
  3/*
  4 * Copyright (c) 1992, 1993
  5 *	The Regents of the University of California.  All rights reserved.
  6 *
  7 * Redistribution and use in source and binary forms, with or without
  8 * modification, are permitted provided that the following conditions
  9 * are met:
 10 * 1. Redistributions of source code must retain the above copyright
 11 *    notice, this list of conditions and the following disclaimer.
 12 * 2. Redistributions in binary form must reproduce the above copyright
 13 *    notice, this list of conditions and the following disclaimer in the
 14 *    documentation and/or other materials provided with the distribution.
 15 * 3. Neither the name of the University nor the names of its contributors
 16 *    may be used to endorse or promote products derived from this software
 17 *    without specific prior written permission.
 18 *
 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 29 * SUCH DAMAGE.
 30 *
 31 *	@(#)ptrace.h	8.1 (Berkeley) 6/10/93
 32 */
 33
 34/*
 35 * Mips-dependent ptrace definitions.
 36 *
 37 */
 38
 39#ifndef _MIPS_PTRACE_H_
 40#define	_MIPS_PTRACE_H_
 41
 42/* MIPS PT_STEP PT_FIRSTMACH+0 might be defined by a port specific header */
 43#define	PT_GETREGS	(PT_FIRSTMACH + 1)
 44#define	PT_SETREGS	(PT_FIRSTMACH + 2)
 45
 46#define	PT_GETFPREGS	(PT_FIRSTMACH + 3)
 47#define	PT_SETFPREGS	(PT_FIRSTMACH + 4)
 48
 49#ifdef PT_STEP
 50#define	PT_SETSTEP	(PT_FIRSTMACH + 5)
 51#define	PT_CLEARSTEP	(PT_FIRSTMACH + 6)
 52#endif
 53
 54#define	PT_MACHDEP_STRINGS \
 55	"PT_STEP", \
 56	"PT_GETREGS", \
 57	"PT_SETREGS", \
 58	"PT_GETFPREGS", \
 59	"PT_SETFPREGS", \
 60	"PT_SETSTEP", \
 61	"PT_CLEARSTEP",
 62
 63#include <machine/reg.h>
 64#define	PTRACE_REG_PC(r)	(r)->r_regs[35]
 65#define	PTRACE_REG_FP(r)	(r)->r_regs[30]
 66#define	PTRACE_REG_SET_PC(r, v)	(r)->r_regs[35] = (v)
 67#define	PTRACE_REG_SP(r)	(r)->r_regs[29]
 68#define	PTRACE_REG_INTRV(r)	(r)->r_regs[2]
 69
 70/*
 71 * The sigrie is defined in the MIPS32r6 and MIPS64r6 specs to
 72 * generate a Reserved Instruction trap but uses a previously
 73 * reserved instruction encoding and is thus both backwards and
 74 * forwards compatible.
 75 */
 76#define	PTRACE_ILLEGAL_ASM	do {					\
 77		asm volatile(						\
 78			".set	push;		"			\
 79			".set	mips32r6;	"			\
 80			"sigrie	0;		"			\
 81			".set	pop;		"			\
 82		);							\
 83	} while (0);
 84
 85#define	PTRACE_BREAKPOINT	((const uint8_t[]) { 0x00, 0x00, 0x00, 0x0d })
 86#define	PTRACE_BREAKPOINT_ASM	__asm __volatile("break")
 87#define	PTRACE_BREAKPOINT_SIZE	4
 88
 89/*
 90 * Glue for gdb: map NetBSD register names to legacy ptrace register names
 91 */
 92#define	GPR_BASE 0
 93
 94#ifndef JB_PC
 95#define	JB_PC	2	/* pc is at ((long *)jmp_buf)[2] */
 96#endif
 97
 98#include <machine/reg.h>	/* Historically in sys/ptrace.h */
 99#include <machine/regnum.h>	/* real register names */
100
101#endif	 /* _MIPS_PTRACE_H_ */