/*- * Copyright (c) 1988 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Computer Consoles Inc. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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. * * @(#)pcb.h 7.2 (Berkeley) 5/8/91 */ /* * TAHOE process control block */ struct pcb { int pcb_ksp; /* kernel stack pointer */ int pcb_usp; /* user stack pointer */ int pcb_r0; int pcb_r1; int pcb_r2; int pcb_r3; int pcb_r4; int pcb_r5; int pcb_r6; int pcb_r7; int pcb_r8; int pcb_r9; int pcb_r10; int pcb_r11; int pcb_r12; int pcb_r13; #define pcb_fp pcb_r13 int pcb_pc; /* program counter */ int pcb_psl; /* program status longword */ struct pte *pcb_p0br; /* seg 0 base register */ int pcb_p0lr; /* seg 0 length register and astlevel */ struct pte *pcb_p1br; /* seg 1 base register */ int pcb_p1lr; /* seg 1 length register and pme */ struct pte *pcb_p2br; /* seg 2 base register */ int pcb_p2lr; /* seg 2 length register and pme */ int pcb_ach; /* accumulator - high order longword */ int pcb_acl; /* accumulator - low order longword */ #define ACH pcb_ach #define ACL pcb_acl int pcb_hfs; /* fp status register */ /* * Software pcb (extension) */ union { float *faddr; /* address of single precision accumulator */ double *daddr; /* address of double precision accumulator */ } pcb_savacc; #define FSAVACC pcb_savacc.faddr #define DSAVACC pcb_savacc.daddr int pcb_szpt; /* number of pages of user page table */ int pcb_cmap2; int *pcb_sswap; long pcb_sigc[5]; /* sigcode actually 19 bytes */ }; extern long *user_psl; #define aston() { \ u.u_pcb.pcb_psl |= PSL_SFE; \ if ((int)user_psl != 0) \ *user_psl |= PSL_SFE; \ } #define astoff() { \ u.u_pcb.pcb_psl &= ~ PSL_SFE; \ if ((int)user_psl != 0) \ *user_psl &= ~PSL_SFE; \ }