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Annotation of coherent/a/usr/include.b4ps2/sys/seg.h, revision 1.1

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:  * Segments.
        !             8:  */
        !             9: 
        !            10: #ifndef         SEG_H
        !            11: #define         SEG_H  SEG_H
        !            12: 
        !            13: #include <sys/types.h>
        !            14: 
        !            15: /*
        !            16:  * Segment structure.
        !            17:  */
        !            18: typedef struct seg {
        !            19:        struct   seg * s_forw;          /* Forward pointer */
        !            20:        struct   seg * s_back;          /* Backward pointer */
        !            21:        struct   inode * s_ip;          /* Inode pointer for shared text */
        !            22:        short    s_flags;               /* Flags */
        !            23:        short    s_urefc;               /* Reference count of segment */
        !            24:        short    s_lrefc;               /* Lock reference count */
        !            25: #ifdef _I386
        !            26:        off_t    s_size;                /* Size in bytes */
        !            27:        cseg_t   *s_vmem;               /* page table address */
        !            28: #else
        !            29:        faddr_t  s_faddr;               /* Memory access selector */
        !            30:        fsize_t  s_size;                /* Size in bytes */
        !            31:        paddr_t  s_paddr;               /* Physical base address */
        !            32: #endif
        !            33:        daddr_t  s_daddr;               /* Disk base address */
        !            34: } SEG;
        !            35: 
        !            36: /*
        !            37:  * Flags (s_flags).
        !            38:  */
        !            39: #define SFCORE 0x0001                  /* Memory resident */
        !            40: #define        SFDOWN  0x0002                  /* Segment grows downward */
        !            41: #define SFSHRX 0x0004                  /* Shared segment */
        !            42: #define SFTEXT 0x0008                  /* Text segment */
        !            43: #define SFHIGH 0x0010                  /* Text segment */
        !            44: #define        SFSYST  0x0020                  /* System segment */
        !            45: 
        !            46: /*
        !            47:  * Pseudo flags.  (passed to salloc).
        !            48:  */
        !            49: #define        SFNSWP  0x4000                  /* Don't swap */
        !            50: #define SFNCLR 0x8000                  /* Don't clear segment */
        !            51: 
        !            52: #ifdef KERNEL
        !            53: /*
        !            54:  * Functions.
        !            55:  */
        !            56: extern SEG     *iomapvp();             /* bio.c */
        !            57: extern SEG     *segdupl();             /* seg.c */
        !            58: extern SEG     *ssalloc();             /* seg.c */
        !            59: extern SEG     *salloc();              /* seg.c */
        !            60: extern SEG     *segsext();             /* seg.c */
        !            61: extern SEG     *segdupd();             /* seg.c */
        !            62: extern SEG     *sdalloc();             /* seg.c */
        !            63: extern SEG     *smalloc();             /* seg.c */
        !            64: extern SEG     *shalloc();             /* seg.c */
        !            65: extern SEG     *exaread();             /* exec.c */
        !            66: extern SEG     *exsread();             /* exec.c */
        !            67: extern SEG     *exstack();             /* exec.c */
        !            68: 
        !            69: /*
        !            70:  * Global variables.
        !            71:  */
        !            72: extern int     sexflag;                /* Swapper existant */
        !            73: extern GATE    seglink;                /* Gate for s_forw and s_back */
        !            74: extern SEG     segswap;                /* Segments reserved for the swapper */
        !            75: extern SEG     segmq;                  /* Memory segment queue */
        !            76: extern SEG     segdq;                  /* Segment disk queue */
        !            77: extern SEG     segiom;                 /* I/O memory segment */
        !            78: 
        !            79: #endif
        !            80: 
        !            81: #endif

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