proc.h revision 1.11.2.2
1 1.11.2.2 nathanw /* $NetBSD: proc.h,v 1.11.2.2 2001/08/30 23:43:43 nathanw Exp $ */ 2 1.11.2.2 nathanw 3 1.11.2.2 nathanw /* 4 1.11.2.2 nathanw * Copyright (c) 1994, 1995 Carnegie-Mellon University. 5 1.11.2.2 nathanw * All rights reserved. 6 1.11.2.2 nathanw * 7 1.11.2.2 nathanw * Author: Chris G. Demetriou 8 1.11.2.2 nathanw * 9 1.11.2.2 nathanw * Permission to use, copy, modify and distribute this software and 10 1.11.2.2 nathanw * its documentation is hereby granted, provided that both the copyright 11 1.11.2.2 nathanw * notice and this permission notice appear in all copies of the 12 1.11.2.2 nathanw * software, derivative works or modified versions, and any portions 13 1.11.2.2 nathanw * thereof, and that both notices appear in supporting documentation. 14 1.11.2.2 nathanw * 15 1.11.2.2 nathanw * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 1.11.2.2 nathanw * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 1.11.2.2 nathanw * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 1.11.2.2 nathanw * 19 1.11.2.2 nathanw * Carnegie Mellon requests users of this software to return to 20 1.11.2.2 nathanw * 21 1.11.2.2 nathanw * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 1.11.2.2 nathanw * School of Computer Science 23 1.11.2.2 nathanw * Carnegie Mellon University 24 1.11.2.2 nathanw * Pittsburgh PA 15213-3890 25 1.11.2.2 nathanw * 26 1.11.2.2 nathanw * any improvements or extensions that they make and grant Carnegie the 27 1.11.2.2 nathanw * rights to redistribute these changes. 28 1.11.2.2 nathanw */ 29 1.11.2.2 nathanw 30 1.11.2.2 nathanw #ifndef _ALPHA_PROC_H 31 1.11.2.2 nathanw #define _ALPHA_PROC_H 32 1.11.2.2 nathanw 33 1.11.2.2 nathanw #include <machine/frame.h> 34 1.11.2.2 nathanw 35 1.11.2.2 nathanw /* 36 1.11.2.2 nathanw * Machine-dependent part of the lwp struct for the Alpha. 37 1.11.2.2 nathanw */ 38 1.11.2.2 nathanw struct mdlwp { 39 1.11.2.2 nathanw u_long md_flags; 40 1.11.2.2 nathanw struct trapframe *md_tf; /* trap/syscall registers */ 41 1.11.2.2 nathanw struct pcb *md_pcbpaddr; /* phys addr of the pcb */ 42 1.11.2.2 nathanw }; 43 1.11.2.2 nathanw /* 44 1.11.2.2 nathanw * md_flags usage 45 1.11.2.2 nathanw * -------------- 46 1.11.2.2 nathanw * MDP_FPUSED 47 1.11.2.2 nathanw * A largely unused bit indicating the presence of FPU history. 48 1.11.2.2 nathanw * Cleared on exec. Set but not used by the fpu context switcher 49 1.11.2.2 nathanw * itself. 50 1.11.2.2 nathanw * 51 1.11.2.2 nathanw * MDP_FP_C 52 1.11.2.2 nathanw * The architected FP Control word. It should forever begin at bit 1, 53 1.11.2.2 nathanw * as the bits are AARM specified and this way it doesn't need to be 54 1.11.2.2 nathanw * shifted. 55 1.11.2.2 nathanw * 56 1.11.2.2 nathanw * Until C99 there was never an IEEE 754 API, making most of the 57 1.11.2.2 nathanw * standard useless. Because of overlapping AARM, OSF/1, NetBSD, and 58 1.11.2.2 nathanw * C99 API's, the use of the MDP_FP_C bits is defined variously in 59 1.11.2.2 nathanw * ieeefp.h and fpu.h. 60 1.11.2.2 nathanw */ 61 1.11.2.2 nathanw #define MDP_FPUSED 0x00000001 /* Process used the FPU */ 62 1.11.2.2 nathanw #define MDP_FP_C 0x007ffffe /* Extended FP_C Quadword bits */ 63 1.11.2.2 nathanw 64 1.11.2.2 nathanw /* 65 1.11.2.2 nathanw * Machine-dependent part of the proc struct for the Alpha. 66 1.11.2.2 nathanw */ 67 1.11.2.2 nathanw struct lwp; 68 1.11.2.2 nathanw struct mdproc { 69 1.11.2.2 nathanw /* this process's syscall vector */ 70 1.11.2.2 nathanw void (*md_syscall)(struct lwp *, u_int64_t, struct trapframe *); 71 1.11.2.2 nathanw __volatile int md_astpending; /* AST pending for this process */ 72 1.11.2.2 nathanw }; 73 1.11.2.2 nathanw 74 1.11.2.2 nathanw 75 1.11.2.2 nathanw #endif /* !_ALPHA_PROC_H_ */ 76
Indexes created Thu Oct 30 16:09:53 GMT 2025