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Annotation of researchv9/jerq/sgs/inc/scnhdr.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * static char ID_scnhdrh[] = "@(#) scnhdr.h: 1.5 1/4/84";
        !             3:  */
        !             4: 
        !             5: struct scnhdr {
        !             6:        char            s_name[8];      /* section name */
        !             7:        long            s_paddr;        /* physical address */
        !             8:        long            s_vaddr;        /* virtual address */
        !             9:        long            s_size;         /* section size */
        !            10:        long            s_scnptr;       /* file ptr to raw data for section */
        !            11:        long            s_relptr;       /* file ptr to relocation */
        !            12:        long            s_lnnoptr;      /* file ptr to line numbers */
        !            13:        unsigned short  s_nreloc;       /* number of relocation entries */
        !            14:        unsigned short  s_nlnno;        /* number of line number entries */
        !            15:        long            s_flags;        /* flags */
        !            16:        };
        !            17: 
        !            18: #define        SCNHDR  struct scnhdr
        !            19: #define        SCNHSZ  sizeof(SCNHDR)
        !            20: 
        !            21: 
        !            22: 
        !            23: 
        !            24: /*
        !            25:  * Define constants for names of "special" sections
        !            26:  */
        !            27: 
        !            28: #define _TEXT ".text"
        !            29: #define _DATA ".data"
        !            30: #define _BSS  ".bss"
        !            31: #define _TV  ".tv"
        !            32: 
        !            33: 
        !            34: 
        !            35: 
        !            36: /*
        !            37:  * The low 2 bytes of s_flags is used as a section "type"
        !            38:  */
        !            39: 
        !            40: #define STYP_REG       0x00            /* "regular" section:
        !            41:                                                allocated, relocated, loaded */
        !            42: #define STYP_DSECT     0x01            /* "dummy" section:
        !            43:                                                not allocated, relocated,
        !            44:                                                not loaded */
        !            45: #define STYP_NOLOAD    0x02            /* "noload" section:
        !            46:                                                allocated, relocated,
        !            47:                                                 not loaded */
        !            48: #define STYP_GROUP     0x04            /* "grouped" section:
        !            49:                                                formed of input sections */
        !            50: #define STYP_PAD       0x08            /* "padding" section:
        !            51:                                                not allocated, not relocated,
        !            52:                                                 loaded */
        !            53: #define STYP_COPY      0x10            /* "copy" section:
        !            54:                                                for decision function used
        !            55:                                                by field update;  not
        !            56:                                                allocated, not relocated,
        !            57:                                                loaded;  reloc & lineno
        !            58:                                                entries processed normally */
        !            59: #define STYP_INFO      0x200           /* comment section : not allocated
        !            60:                                                not relocated, not loaded */
        !            61: #define STYP_OVER      0x400           /* overlay section : relocated
        !            62:                                                not allocated or loaded */
        !            63: #define        STYP_TEXT       0x20            /* section contains text only */
        !            64: #define STYP_DATA      0x40            /* section contains data only */
        !            65: #define STYP_BSS       0x80            /* section contains bss only */
        !            66: 
        !            67: /*
        !            68:  *  In a minimal file or an update file, a new function
        !            69:  *  (as compared with a replaced function) is indicated by S_NEWFCN
        !            70:  */
        !            71: 
        !            72: #define S_NEWFCN  0x100
        !            73: 
        !            74: /*
        !            75:  * In 3b Update Files (output of ogen), sections which appear in SHARED
        !            76:  * segments of the Pfile will have the S_SHRSEG flag set by ogen, to inform
        !            77:  * dufr that updating 1 copy of the proc. will update all process invocations.
        !            78:  */
        !            79: 
        !            80: #define S_SHRSEG       0x20

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