1 /* $OpenBSD: reg.h,v 1.9 2024/03/29 21:14:31 miod Exp $ */ 2 /* $NetBSD: reg.h,v 1.8 2001/06/19 12:59:16 wiz Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This software was developed by the Computer Systems Engineering group 9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 10 * contributed to Berkeley. 11 * 12 * All advertising materials mentioning features or use of this software 13 * must display the following acknowledgement: 14 * This product includes software developed by the University of 15 * California, Lawrence Berkeley Laboratory. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * @(#)reg.h 8.1 (Berkeley) 6/11/93 42 */ 43 44 #ifndef _MACHINE_REG_H_ 45 #define _MACHINE_REG_H_ 46 47 /* 48 * The v9 register window. Each stack pointer (%o6 aka %sp) in each window 49 * must ALWAYS point to some place at which it is safe to scribble on 50 * 64 bytes. (If not, your process gets mangled.) Furthermore, each 51 * stack pointer should be aligned on a 16-byte boundary (plus the BIAS) 52 * for v9 stacks (the kernel as currently coded allows arbitrary alignment, 53 * but with a hefty performance penalty). 54 */ 55 struct rwindow { 56 int64_t rw_local[8]; /* %l0..%l7 */ 57 int64_t rw_in[8]; /* %i0..%i7 */ 58 }; 59 60 struct reg { 61 int64_t r_tstate; /* tstate register */ 62 int64_t r_pc; /* return pc */ 63 int64_t r_npc; /* return npc */ 64 int r_y; /* %y register -- 32-bits */ 65 int64_t r_global[8]; /* %g* registers in trap's caller */ 66 int64_t r_out[8]; /* %o* registers in trap's caller */ 67 int64_t r_local[8]; /* %l* registers in trap's caller */ 68 int64_t r_in[8]; /* %i* registers in trap's caller */ 69 }; 70 71 /* 72 * FP coprocessor registers. 73 */ 74 75 struct fpstate { 76 u_int fs_regs[64]; /* our view is 64 32-bit registers */ 77 int64_t fs_fsr; /* %fsr */ 78 int fs_gsr; /* graphics state reg */ 79 }; 80 81 /* 82 * The actual FP registers are made accessible (c.f. ptrace(2)) through 83 * a `struct fpreg'; <arch/sparc64/sparc64/process_machdep.c> relies on the 84 * fact that `fpreg' is a prefix of `fpstate'. 85 */ 86 struct fpreg { 87 u_int fr_regs[64]; /* our view is 64 32-bit registers */ 88 int64_t fr_fsr; /* %fsr */ 89 int fr_gsr; /* graphics state reg */ 90 }; 91 92 #endif /* _MACHINE_REG_H_ */ 93