/*      $NetBSD: ptrace.h,v 1.19 2021/03/18 23:18:36 simonb Exp $       */

/*
* Copyright (c) 1992, 1993
*      The Regents of the University of California.  All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      @(#)ptrace.h    8.1 (Berkeley) 6/10/93
*/

/*
* Mips-dependent ptrace definitions.
*
*/

#ifndef _MIPS_PTRACE_H_
#define _MIPS_PTRACE_H_

/* MIPS PT_STEP PT_FIRSTMACH+0 might be defined by a port specific header */
#define PT_GETREGS      (PT_FIRSTMACH + 1)
#define PT_SETREGS      (PT_FIRSTMACH + 2)

#define PT_GETFPREGS    (PT_FIRSTMACH + 3)
#define PT_SETFPREGS    (PT_FIRSTMACH + 4)

#ifdef PT_STEP
#define PT_SETSTEP      (PT_FIRSTMACH + 5)
#define PT_CLEARSTEP    (PT_FIRSTMACH + 6)
#endif

#define PT_MACHDEP_STRINGS \
       "PT_STEP", \
       "PT_GETREGS", \
       "PT_SETREGS", \
       "PT_GETFPREGS", \
       "PT_SETFPREGS", \
       "PT_SETSTEP", \
       "PT_CLEARSTEP",

#include <machine/reg.h>
#define PTRACE_REG_PC(r)        (r)->r_regs[35]
#define PTRACE_REG_FP(r)        (r)->r_regs[30]
#define PTRACE_REG_SET_PC(r, v) (r)->r_regs[35] = (v)
#define PTRACE_REG_SP(r)        (r)->r_regs[29]
#define PTRACE_REG_INTRV(r)     (r)->r_regs[2]

/*
* The sigrie is defined in the MIPS32r6 and MIPS64r6 specs to
* generate a Reserved Instruction trap but uses a previously
* reserved instruction encoding and is thus both backwards and
* forwards compatible.
*/
#define PTRACE_ILLEGAL_ASM      do {                                    \
               asm volatile(                                           \
                       ".set   push;           "                       \
                       ".set   mips32r6;       "                       \
                       "sigrie 0;              "                       \
                       ".set   pop;            "                       \
               );                                                      \
       } while (0);

#define PTRACE_BREAKPOINT       ((const uint8_t[]) { 0x00, 0x00, 0x00, 0x0d })
#define PTRACE_BREAKPOINT_ASM   __asm __volatile("break")
#define PTRACE_BREAKPOINT_SIZE  4

/*
* Glue for gdb: map NetBSD register names to legacy ptrace register names
*/
#define GPR_BASE 0

#ifndef JB_PC
#define JB_PC   2       /* pc is at ((long *)jmp_buf)[2] */
#endif

#include <machine/reg.h>        /* Historically in sys/ptrace.h */
#include <machine/regnum.h>     /* real register names */

#endif   /* _MIPS_PTRACE_H_ */