/*      $OpenBSD: reg.h,v 1.7 2019/07/14 05:08:26 guenther Exp $        */
/*      $NetBSD: reg.h,v 1.1 2003/04/26 18:39:47 fvdl Exp $     */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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.
 *
 *      @(#)reg.h       5.5 (Berkeley) 1/18/91
 */

#ifndef _MACHINE_REG_H_
#define _MACHINE_REG_H_

#include <machine/fpu.h>

/*
 * XXX
 * The #defines aren't used in the kernel, but some user-level code still
 * expects them.
 */

/* When referenced during a trap/exception, registers are at these offsets */

#define tRDI    0
#define tRSI    1
#define tRDX    2
#define tRCX    3
#define tR8     4
#define tR9     5
#define tR10    6
#define tR11    7
#define tR12    8
#define tR13    9
#define tR14    10
#define tR15    11
#define tRBP    12
#define tRBX    13
#define tRAX    14
#define tRSP    15
#define tRIP    16
#define tRFLAGS 17
#define tCS     18
#define tSS     19
#define tDS     20
#define tES     21
#define tFS     22
#define tGS     23

/*
 * Registers accessible to ptrace(2) syscall for debugger use.
 */
struct reg {
        int64_t r_rdi;
        int64_t r_rsi;
        int64_t r_rdx;
        int64_t r_rcx;
        int64_t r_r8;
        int64_t r_r9;
        int64_t r_r10;
        int64_t r_r11;
        int64_t r_r12;
        int64_t r_r13;
        int64_t r_r14;
        int64_t r_r15;
        int64_t r_rbp;
        int64_t r_rbx;
        int64_t r_rax;
        int64_t r_rsp;
        int64_t r_rip;
        int64_t r_rflags;
        int64_t r_cs;
        int64_t r_ss;
        int64_t r_ds;
        int64_t r_es;
        int64_t r_fs;
        int64_t r_gs;
};

struct fpreg {
        struct fxsave64 fxstate;
};

#define fp_fcw          fxstate.fx_fcw
#define fp_fsw          fxstate.fx_fsw
#define fp_ftw          fxstate.fx_ftw
#define fp_fop          fxstate.fx_fop
#define fp_rip          fxstate.fx_rip
#define fp_rdp          fxstate.fx_rdp
#define fp_mxcsr        fxstate.fx_mxcsr
#define fp_mxcsr_mask   fxstate.fx_mxcsr_mask
#define fp_st           fxstate.fx_st
#define fp_xmm          fxstate.fx_xmm

#ifdef _KERNEL
int check_context(const struct reg *, struct trapframe *);
#endif

#endif /* !_MACHINE_REG_H_ */