![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to seg.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [MW Coherent from dump] / coherent / f / usr / include.78 / sys|
Return to seg.h CVS log | Up to [MW Coherent from dump] / coherent / f / usr / include.78 / sys |
1.1 root 1: /* (-lgl
2: * COHERENT Version 4.0
3: * Copyright (c) 1982, 1992 by Mark Williams Company.
4: * All rights reserved. May not be copied without permission.
5: -lgl) */
6: /*
7: * /usr/include/sys/seg.h
8: *
9: * Segments.
10: *
11: * Revised: Mon May 24 15:50:18 1993 CDT
12: */
13:
14: #ifndef __SYS_SEG_H__
15: #define __SYS_SEG_H__
16:
17: #include <sys/__paddr.h>
18: #include <sys/types.h>
19: #include <sys/ksynch.h>
20:
21:
22: /*
23: * NIGEL: for some reason the type "cseg_t" was in <sys/types.h>. It belongs
24: * here and in <sys/mmu.h> as much as it belongs anywhere.
25: */
26:
27: #ifndef __CSEG_T
28: #define __CSEG_T
29: typedef long cseg_t;
30: #endif
31:
32: /*
33: * Segment structure.
34: */
35: typedef struct seg {
36: struct seg * s_forw; /* Forward pointer */
37: struct seg * s_back; /* Backward pointer */
38: struct inode * s_ip; /* Inode pointer for shared text */
39: short s_flags; /* Flags */
40: short s_urefc; /* Reference count of segment */
41: short s_lrefc; /* Lock reference count */
42: #ifdef _I386
43: off_t s_size; /* Size in bytes */
44: cseg_t *s_vmem; /* page table address */
45: #else
46: faddr_t s_faddr; /* Memory access selector */
47: fsize_t s_size; /* Size in bytes */
48: __paddr_t s_paddr; /* Physical base address */
49: #endif
50: daddr_t s_daddr; /* Disk base address */
51: } SEG;
52:
53: /*
54: * Flags (s_flags).
55: */
56: #define SFCORE 0x0001 /* Memory resident */
57: #define SFDOWN 0x0002 /* Segment grows downward */
58: #define SFSHRX 0x0004 /* Shared segment */
59: #define SFTEXT 0x0008 /* Text segment */
60: #define SFHIGH 0x0010 /* Text segment */
61: #define SFSYST 0x0020 /* System segment */
62:
63: /*
64: * Pseudo flags. (passed to salloc).
65: */
66: #define SFNSWP 0x4000 /* Don't swap */
67: #define SFNCLR 0x8000 /* Don't clear segment */
68:
69: #ifdef KERNEL
70: /*
71: * Functions.
72: */
73: extern SEG *iomapvp(); /* bio.c */
74: extern SEG *segdupl(); /* seg.c */
75: extern SEG *ssalloc(); /* seg.c */
76: extern SEG *salloc(); /* seg.c */
77: extern SEG *segsext(); /* seg.c */
78: extern SEG *segdupd(); /* seg.c */
79: extern SEG *sdalloc(); /* seg.c */
80: extern SEG *smalloc(); /* seg.c */
81: extern SEG *shalloc(); /* seg.c */
82: extern SEG *exaread(); /* exec.c */
83: extern SEG *exsread(); /* exec.c */
84: extern SEG *exstack(); /* exec.c */
85:
86: /*
87: * Global variables.
88: */
89: extern int sexflag; /* Swapper existant */
90: extern GATE seglink; /* Gate for s_forw and s_back */
91: extern SEG segswap; /* Segments reserved for the swapper */
92: extern SEG segmq; /* Memory segment queue */
93: extern SEG segdq; /* Segment disk queue */
94: extern SEG segiom; /* I/O memory segment */
95:
96: #endif
97:
98: /*
99: * Open segment structure.
100: */
101: typedef struct sr {
102: int sr_flag; /* Flags for this reference */
103: caddr_t sr_base; /* Virtual address base */
104: #ifdef _I386
105: off_t sr_size; /* Mapped in window size */
106: #else
107: vaddr_t sr_size; /* Mapped in window size */
108: #endif
109: struct seg *sr_segp; /* Segment pointer */
110: } SR;
111:
112: /*
113: * Flags (sr_flag).
114: */
115: #define SRFPMAP 0x01 /* Segment is mapped in process */
116: #define SRFDUMP 0x02 /* Dump segment */
117: #define SRFDATA 0x04 /* Data segment */
118: #define SRFRODT 0x08 /* Data, read-only (used by shm) */
119: #define SRFBERM 0x10 /* Segment to be removed (used by shm) */
120:
121: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.