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Annotation of 43BSDReno/usr.sbin/dlmpcc/scnhdr.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * This code is derived from software contributed to Berkeley by
                      6:  * Computer Consoles Inc.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  *
                     22:  *     @(#)scnhdr.h    5.3 (Berkeley) 6/1/90
                     23:  */
                     24: 
                     25: struct scnhdr {
                     26:        char            s_name[8];      /* section name */
                     27:        long            s_paddr;        /* physical address */
                     28:        long            s_vaddr;        /* virtual address */
                     29:        long            s_size;         /* section size */
                     30:        long            s_scnptr;       /* file ptr to raw data for section */
                     31:        long            s_relptr;       /* file ptr to relocation */
                     32:        long            s_lnnoptr;      /* file ptr to line numbers */
                     33:        unsigned short  s_nreloc;       /* number of relocation entries */
                     34:        unsigned short  s_nlnno;        /* number of line number entries */
                     35:        long            s_flags;        /* flags */
                     36:        };
                     37: 
                     38: #define        SCNHDR  struct scnhdr
                     39: #define        SCNHSZ  sizeof(SCNHDR)
                     40: 
                     41: 
                     42: 
                     43: 
                     44: /*
                     45:  * Define constants for names of "special" sections
                     46:  */
                     47: 
                     48: #define _TEXT ".text"
                     49: #define _DATA ".data"
                     50: #define _BSS  ".bss"
                     51: #define _TV  ".tv"
                     52: 
                     53: 
                     54: 
                     55: 
                     56: /*
                     57:  * The low 4 bits of s_flags is used as a section "type"
                     58:  */
                     59: 
                     60: #define STYP_REG       0x00            /* "regular" section:
                     61:                                                allocated, relocated, loaded */
                     62: #define STYP_DSECT     0x01            /* "dummy" section:
                     63:                                                not allocated, relocated,
                     64:                                                not loaded */
                     65: #define STYP_NOLOAD    0x02            /* "noload" section:
                     66:                                                allocated, relocated,
                     67:                                                 not loaded */
                     68: #define STYP_GROUP     0x04            /* "grouped" section:
                     69:                                                formed of input sections */
                     70: #define STYP_PAD       0x08            /* "padding" section:
                     71:                                                not allocated, not relocated,
                     72:                                                 loaded */
                     73: #define STYP_COPY      0x10            /* "copy" section:
                     74:                                                for decision function used
                     75:                                                by field update;  not
                     76:                                                allocated, not relocated,
                     77:                                                loaded;  reloc & lineno
                     78:                                                entries processed normally */
                     79: #define        STYP_TEXT       0x20            /* section contains text only */
                     80: #define STYP_DATA      0x40            /* section contains data only */
                     81: #define STYP_BSS       0x80            /* section contains bss only */
                     82: 
                     83: /*
                     84:  *  In a minimal file or an update file, a new function
                     85:  *  (as compared with a replaced function) is indicated by S_NEWFCN
                     86:  */
                     87: 
                     88: #define S_NEWFCN  0x10
                     89: 
                     90: /*
                     91:  * In 3b Update Files (output of ogen), sections which appear in SHARED
                     92:  * segments of the Pfile will have the S_SHRSEG flag set by ogen, to inform
                     93:  * dufr that updating 1 copy of the proc. will update all process invocations.
                     94:  */
                     95: 
                     96: #define S_SHRSEG       0x20

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