1/* $NetBSD: proc.h,v 1.6 2024/08/04 08:16:25 skrll Exp $ */
2
3/*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _RISCV_PROC_H_
33#define _RISCV_PROC_H_
34
35#include <sys/param.h>
36#include <riscv/vmparam.h>
37
38struct lwp;
39
40/*
41 * Machine-dependent part of the lwp structure for RISCV
42 */
43struct trapframe;
44
45struct mdlwp {
46 struct trapframe *md_utf; /* trapframe from userspace */
47 struct trapframe *md_ktf; /* trapframe from userspace */
48 struct faultbuf *md_onfault; /* registers to store on fault */
49 unsigned long md_usp; /* for locore.S */
50 unsigned long md_ss_addr; /* single step address for ptrace */
51 int md_ss_instr; /* single step instruction for ptrace */
52 volatile int md_astpending; /* AST pending on return to userland */
53#if 0
54#if USPACE > PAGE_SIZE
55 int md_upte[USPACE/4096]; /* ptes for mapping u page */
56#else
57 int md_dpte[USPACE/4096]; /* dummy ptes to keep the same */
58#endif
59#endif
60};
61
62struct mdproc {
63 /* syscall entry for this process */
64 void (*md_syscall)(struct trapframe *);
65};
66
67#ifdef _KERNEL
68#define LWP0_CPU_INFO &cpu_info_store[0] /* staticly set in lwp0 */
69#if 0
70#define LWP0_MD_INITIALIZER { \
71 .md_utf = (void *)0xdeadbeef, \
72 }
73#endif
74#endif /* _KERNEL */
75
76#endif /* _RISCV_PROC_H_ */