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Annotation of researchv9/jerq/sgs/inc/scnhdr.h, revision 1.1.1.1

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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