projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| d7f05398 WJ |
1 | /*- |
| 2 | * Copyright (c) 1990 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * William Jolitz. | |
| 7 | * | |
| 8 | * Redistribution and use in source and binary forms, with or without | |
| 9 | * modification, are permitted provided that the following conditions | |
| 10 | * are met: | |
| 11 | * 1. Redistributions of source code must retain the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer. | |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer in the | |
| 15 | * documentation and/or other materials provided with the distribution. | |
| 16 | * 3. All advertising materials mentioning features or use of this software | |
| 17 | * must display the following acknowledgement: | |
| 18 | * This product includes software developed by the University of | |
| 19 | * California, Berkeley and its contributors. | |
| 20 | * 4. Neither the name of the University nor the names of its contributors | |
| 21 | * may be used to endorse or promote products derived from this software | |
| 22 | * without specific prior written permission. | |
| 23 | * | |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 34 | * SUCH DAMAGE. | |
| 35 | * | |
| 36 | * @(#)pcb.h 5.10 (Berkeley) 5/12/91 | |
| 37 | */ | |
| 38 | ||
| 39 | /* | |
| 40 | * Intel 386 process control block | |
| 41 | */ | |
| 42 | #include "machine/tss.h" | |
| 43 | #include "machine/npx.h" | |
| 44 | ||
| 45 | struct pcb { | |
| 46 | struct i386tss pcb_tss; | |
| 47 | #define pcb_ksp pcb_tss.tss_esp0 | |
| 48 | #define pcb_ptd pcb_tss.tss_cr3 | |
| 49 | #define pcb_cr3 pcb_ptd | |
| 50 | #define pcb_pc pcb_tss.tss_eip | |
| 51 | #define pcb_psl pcb_tss.tss_eflags | |
| 52 | #define pcb_usp pcb_tss.tss_esp | |
| 53 | #define pcb_fp pcb_tss.tss_ebp | |
| 54 | #ifdef notyet | |
| 55 | u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */ | |
| 56 | #endif | |
| 57 | struct save87 pcb_savefpu; /* floating point state for 287/387 */ | |
| 58 | struct emcsts pcb_saveemc; /* Cyrix EMC state */ | |
| 59 | /* | |
| 60 | * Software pcb (extension) | |
| 61 | */ | |
| 62 | int pcb_flags; | |
| 63 | #define FP_WASUSED 0x01 /* process has used fltng pnt hardware */ | |
| 64 | #define FP_NEEDSSAVE 0x02 /* ... that needs save on next context switch */ | |
| 65 | #define FP_NEEDSRESTORE 0x04 /* ... that needs restore on next DNA fault */ | |
| 66 | #define FP_USESEMC 0x08 /* process uses EMC memory-mapped mode */ | |
| 67 | #define FM_TRAP 0x10 /* process entered kernel on a trap frame */ | |
| 68 | #define FP_SOFTFP 0x20 /* process using software fltng pnt emulator */ | |
| 69 | short pcb_iml; /* interrupt mask level */ | |
| 70 | caddr_t pcb_onfault; /* copyin/out fault recovery */ | |
| 71 | long pcb_sigc[8]; /* XXX signal code trampoline */ | |
| 72 | int pcb_cmap2; /* XXX temporary PTE - will prefault instead */ | |
| 73 | }; | |
| 74 | ||
| 75 | #ifdef KERNEL | |
| 76 | struct pcb *curpcb; /* our current running pcb */ | |
| 77 | #endif |