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 38 struct lwp; 39 40 /* 41 * Machine-dependent part of the lwp structure for RISCV 42 */ 43 struct trapframe; 44 45 struct 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 62 struct 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_ */ 77