/* $NetBSD: ptrace.h,v 1.6 2024/05/03 07:11:14 skrll Exp $ */

/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#ifndef _RISCV_PTRACE_H_
#define _RISCV_PTRACE_H_

/*
* RISCV-dependent ptrace definitions.
* Note that PT_STEP is _not_ supported.
*/
#define PT_GETREGS      (PT_FIRSTMACH + 0)
#define PT_SETREGS      (PT_FIRSTMACH + 1)
#define PT_GETFPREGS    (PT_FIRSTMACH + 2)
#define PT_SETFPREGS    (PT_FIRSTMACH + 3)

#define PT_MACHDEP_STRINGS \
       "PT_GETREGS", \
       "PT_SETREGS", \
       "PT_GETFPREGS", \
       "PT_SETFPREGS"

#include <machine/reg.h>
#define PTRACE_REG_PC(r)        (r)->r_pc
#define PTRACE_REG_FP(r)        (r)->r_reg[_X_S0]
#define PTRACE_REG_SET_PC(r, v) (r)->r_pc = (v)
#define PTRACE_REG_SP(r)        (r)->r_reg[_X_SP]
#define PTRACE_REG_INTRV(r)     (r)->r_reg[_X_A0]

#define PTRACE_ILLEGAL_ASM      __asm __volatile("c.unimp" ::: "memory")

#define PTRACE_BREAKPOINT       ((const uint8_t[]) { 0x02, 0x90 })
#define PTRACE_BREAKPOINT_ASM   __asm __volatile("c.ebreak" ::: "memory")
#define PTRACE_BREAKPOINT_SIZE  2

#endif /* _RISCV_PTRACE_H_ */