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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 | |
9 | * provided that the above copyright notice and this paragraph are | |
10 | * duplicated in all such forms and that any documentation, | |
11 | * advertising materials, and other materials related to such | |
12 | * distribution and use acknowledge that the software was developed | |
13 | * by the University of California, Berkeley. The name of the | |
14 | * University may not be used to endorse or promote products derived | |
15 | * from this software without specific prior written permission. | |
16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
17 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
18 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
19 | * | |
20 | * @(#)scnhdr.h 5.2 (Berkeley) %G% | |
21 | */ | |
20e9ef9e SL |
22 | |
23 | struct scnhdr { | |
24 | char s_name[8]; /* section name */ | |
25 | long s_paddr; /* physical address */ | |
26 | long s_vaddr; /* virtual address */ | |
27 | long s_size; /* section size */ | |
28 | long s_scnptr; /* file ptr to raw data for section */ | |
29 | long s_relptr; /* file ptr to relocation */ | |
30 | long s_lnnoptr; /* file ptr to line numbers */ | |
31 | unsigned short s_nreloc; /* number of relocation entries */ | |
32 | unsigned short s_nlnno; /* number of line number entries */ | |
33 | long s_flags; /* flags */ | |
34 | }; | |
35 | ||
36 | #define SCNHDR struct scnhdr | |
37 | #define SCNHSZ sizeof(SCNHDR) | |
38 | ||
39 | ||
40 | ||
41 | ||
42 | /* | |
43 | * Define constants for names of "special" sections | |
44 | */ | |
45 | ||
46 | #define _TEXT ".text" | |
47 | #define _DATA ".data" | |
48 | #define _BSS ".bss" | |
49 | #define _TV ".tv" | |
50 | ||
51 | ||
52 | ||
53 | ||
54 | /* | |
55 | * The low 4 bits of s_flags is used as a section "type" | |
56 | */ | |
57 | ||
58 | #define STYP_REG 0x00 /* "regular" section: | |
59 | allocated, relocated, loaded */ | |
60 | #define STYP_DSECT 0x01 /* "dummy" section: | |
61 | not allocated, relocated, | |
62 | not loaded */ | |
63 | #define STYP_NOLOAD 0x02 /* "noload" section: | |
64 | allocated, relocated, | |
65 | not loaded */ | |
66 | #define STYP_GROUP 0x04 /* "grouped" section: | |
67 | formed of input sections */ | |
68 | #define STYP_PAD 0x08 /* "padding" section: | |
69 | not allocated, not relocated, | |
70 | loaded */ | |
71 | #define STYP_COPY 0x10 /* "copy" section: | |
72 | for decision function used | |
73 | by field update; not | |
74 | allocated, not relocated, | |
75 | loaded; reloc & lineno | |
76 | entries processed normally */ | |
77 | #define STYP_TEXT 0x20 /* section contains text only */ | |
78 | #define STYP_DATA 0x40 /* section contains data only */ | |
79 | #define STYP_BSS 0x80 /* section contains bss only */ | |
80 | ||
81 | /* | |
82 | * In a minimal file or an update file, a new function | |
83 | * (as compared with a replaced function) is indicated by S_NEWFCN | |
84 | */ | |
85 | ||
86 | #define S_NEWFCN 0x10 | |
87 | ||
88 | /* | |
89 | * In 3b Update Files (output of ogen), sections which appear in SHARED | |
90 | * segments of the Pfile will have the S_SHRSEG flag set by ogen, to inform | |
91 | * dufr that updating 1 copy of the proc. will update all process invocations. | |
92 | */ | |
93 | ||
94 | #define S_SHRSEG 0x20 |