| 1 | /*- |
| 2 | * Copyright (c) 1982, 1986 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.proprietary.c% |
| 6 | * |
| 7 | * @(#)pcb.h 7.2 (Berkeley) %G% |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * VAX process control block |
| 12 | */ |
| 13 | |
| 14 | struct pcb |
| 15 | { |
| 16 | int pcb_ksp; /* kernel stack pointer */ |
| 17 | int pcb_esp; /* exec stack pointer */ |
| 18 | int pcb_ssp; /* supervisor stack pointer */ |
| 19 | int pcb_usp; /* user stack pointer */ |
| 20 | int pcb_r0; |
| 21 | int pcb_r1; |
| 22 | int pcb_r2; |
| 23 | int pcb_r3; |
| 24 | int pcb_r4; |
| 25 | int pcb_r5; |
| 26 | int pcb_r6; |
| 27 | int pcb_r7; |
| 28 | int pcb_r8; |
| 29 | int pcb_r9; |
| 30 | int pcb_r10; |
| 31 | int pcb_r11; |
| 32 | int pcb_r12; |
| 33 | #define pcb_ap pcb_r12 |
| 34 | int pcb_r13; |
| 35 | #define pcb_fp pcb_r13 |
| 36 | int pcb_pc; /* program counter */ |
| 37 | int pcb_psl; /* program status longword */ |
| 38 | struct pte *pcb_p0br; /* seg 0 base register */ |
| 39 | int pcb_p0lr; /* seg 0 length register and astlevel */ |
| 40 | struct pte *pcb_p1br; /* seg 1 base register */ |
| 41 | int pcb_p1lr; /* seg 1 length register and pme */ |
| 42 | /* |
| 43 | * Software pcb (extension) |
| 44 | */ |
| 45 | int pcb_szpt; /* number of pages of user page table */ |
| 46 | int pcb_cmap2; |
| 47 | int *pcb_sswap; |
| 48 | int pcb_sigc[5]; |
| 49 | }; |
| 50 | |
| 51 | #define AST_NONE 0x04000000 /* ast level */ |
| 52 | #define AST_USER 0x03000000 /* ast for user mode */ |
| 53 | |
| 54 | #define ASTLVL_NONE 4 |
| 55 | #define ASTLVL_USER 3 |
| 56 | |
| 57 | #define AST_CLR 0x07000000 |
| 58 | #define PME_CLR 0x80000000 |
| 59 | |
| 60 | #define aston() \ |
| 61 | { \ |
| 62 | mtpr(ASTLVL, ASTLVL_USER); \ |
| 63 | } |
| 64 | |
| 65 | #define astoff() \ |
| 66 | { \ |
| 67 | mtpr(ASTLVL, ASTLVL_NONE); \ |
| 68 | } |