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Annotation of researchv10no/cmd/kasb/scnhdr.h, revision 1.1

1.1     ! root        1: /*     @(#)scnhdr.h    2.2 12/15/82    */
        !             2: 
        !             3: struct scnhdr {
        !             4:        char            s_name[8];      /* section name */
        !             5:        long            s_paddr;        /* physical address */
        !             6:        long            s_vaddr;        /* virtual address */
        !             7:        long            s_size;         /* section size */
        !             8:        long            s_scnptr;       /* file ptr to raw data for section */
        !             9:        long            s_relptr;       /* file ptr to relocation */
        !            10:        long            s_lnnoptr;      /* file ptr to line numbers */
        !            11:        unsigned short  s_nreloc;       /* number of relocation entries */
        !            12:        unsigned short  s_nlnno;        /* number of line number entries */
        !            13:        long            s_flags;        /* flags */
        !            14:        };
        !            15: 
        !            16: #define        SCNHDR  struct scnhdr
        !            17: #define        SCNHSZ  sizeof(SCNHDR)
        !            18: 
        !            19: 
        !            20: 
        !            21: 
        !            22: /*
        !            23:  * Define constants for names of "special" sections
        !            24:  */
        !            25: 
        !            26: #define _TEXT ".text"
        !            27: #define _DATA ".data"
        !            28: #define _BSS  ".bss"
        !            29: #define _TV  ".tv"
        !            30: 
        !            31: 
        !            32: 
        !            33: 
        !            34: /*
        !            35:  * The low 4 bits of s_flags is used as a section "type"
        !            36:  */
        !            37: 
        !            38: #define STYP_REG       0x00            /* "regular" section:
        !            39:                                                allocated, relocated, loaded */
        !            40: #define STYP_DSECT     0x01            /* "dummy" section:
        !            41:                                                not allocated, relocated,
        !            42:                                                not loaded */
        !            43: #define STYP_NOLOAD    0x02            /* "noload" section:
        !            44:                                                allocated, relocated,
        !            45:                                                 not loaded */
        !            46: #define STYP_GROUP     0x04            /* "grouped" section:
        !            47:                                                formed of input sections */
        !            48: #define STYP_PAD       0x08            /* "padding" section:
        !            49:                                                not allocated, not relocated,
        !            50:                                                 loaded */
        !            51: #define STYP_COPY      0x10            /* "copy" section:
        !            52:                                                for decision function used
        !            53:                                                by field update;  not
        !            54:                                                allocated, not relocated,
        !            55:                                                loaded;  reloc & lineno
        !            56:                                                entries processed normally */
        !            57: #define        STYP_TEXT       0x20            /* section contains text only */
        !            58: #define STYP_DATA      0x40            /* section contains data only */
        !            59: #define STYP_BSS       0x80            /* section contains bss only */
        !            60: 
        !            61: /*
        !            62:  *  In a minimal file or an update file, a new function
        !            63:  *  (as compared with a replaced function) is indicated by S_NEWFCN
        !            64:  */
        !            65: 
        !            66: #define S_NEWFCN  0x10
        !            67: 
        !            68: /*
        !            69:  * In 3b Update Files (output of ogen), sections which appear in SHARED
        !            70:  * segments of the Pfile will have the S_SHRSEG flag set by ogen, to inform
        !            71:  * dufr that updating 1 copy of the proc. will update all process invocations.
        !            72:  */
        !            73: 
        !            74: #define S_SHRSEG       0x20

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