| 1 | /* Declarations of internal format of MIPS ECOFF symbols.
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| 2 | Originally contributed by MIPS Computer Systems and Third Eye Software.
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| 3 | Changes contributed by Cygnus Support are in the public domain.
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| 4 |
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| 5 | This file is just aggregated with the files that make up the GNU
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| 6 | release; it is not considered part of GAS, GDB, or other GNU
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| 7 | programs. */
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| 8 |
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| 9 | /*
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| 10 | * |-----------------------------------------------------------|
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| 11 | * | Copyright (c) 1992, 1991, 1990 MIPS Computer Systems, Inc.|
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| 12 | * | MIPS Computer Systems, Inc. grants reproduction and use |
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| 13 | * | rights to all parties, PROVIDED that this comment is |
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| 14 | * | maintained in the copy. |
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| 15 | * |-----------------------------------------------------------|
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| 16 | */
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| 17 | #ifndef _SYM_H
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| 18 | #define _SYM_H
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| 19 |
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| 20 | /* (C) Copyright 1984 by Third Eye Software, Inc.
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| 21 | *
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| 22 | * Third Eye Software, Inc. grants reproduction and use rights to
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| 23 | * all parties, PROVIDED that this comment is maintained in the copy.
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| 24 | *
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| 25 | * Third Eye makes no claims about the applicability of this
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| 26 | * symbol table to a particular use.
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| 27 | */
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| 28 |
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| 29 | /*
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| 30 | * This file contains the definition of the Third Eye Symbol Table.
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| 31 | *
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| 32 | * Symbols are assumed to be in 'encounter order' - i.e. the order that
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| 33 | * the things they represent were encountered by the compiler/assembler/loader.
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| 34 | * EXCEPT for globals! These are assumed to be bunched together,
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| 35 | * probably right after the last 'normal' symbol. Globals ARE sorted
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| 36 | * in ascending order.
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| 37 | *
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| 38 | * -----------------------------------------------------------------------
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| 39 | * A brief word about Third Eye naming/use conventions:
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| 40 | *
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| 41 | * All arrays and index's are 0 based.
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| 42 | * All "ifooMax" values are the highest legal value PLUS ONE. This makes
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| 43 | * them good for allocating arrays, etc. All checks are "ifoo < ifooMax".
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| 44 | *
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| 45 | * "isym" Index into the SYMbol table.
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| 46 | * "ipd" Index into the Procedure Descriptor array.
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| 47 | * "ifd" Index into the File Descriptor array.
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| 48 | * "iss" Index into String Space.
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| 49 | * "cb" Count of Bytes.
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| 50 | * "rgPd" array whose domain is "0..ipdMax-1" and RanGe is PDR.
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| 51 | * "rgFd" array whose domain is "0..ifdMax-1" and RanGe is FDR.
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| 52 | */
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| 53 |
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| 54 |
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| 55 | /*
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| 56 | * Symbolic Header (HDR) structure.
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| 57 | * As long as all the pointers are set correctly,
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| 58 | * we don't care WHAT order the various sections come out in!
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| 59 | *
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| 60 | * A file produced solely for the use of CDB will probably NOT have
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| 61 | * any instructions or data areas in it, as these are available
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| 62 | * in the original.
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| 63 | */
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| 64 |
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| 65 | typedef struct {
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| 66 | short magic; /* to verify validity of the table */
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| 67 | short vstamp; /* version stamp */
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| 68 | long ilineMax; /* number of line number entries */
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| 69 | bfd_vma cbLine; /* number of bytes for line number entries */
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| 70 | bfd_vma cbLineOffset; /* offset to start of line number entries*/
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| 71 | long idnMax; /* max index into dense number table */
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| 72 | bfd_vma cbDnOffset; /* offset to start dense number table */
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| 73 | long ipdMax; /* number of procedures */
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| 74 | bfd_vma cbPdOffset; /* offset to procedure descriptor table */
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| 75 | long isymMax; /* number of local symbols */
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| 76 | bfd_vma cbSymOffset; /* offset to start of local symbols*/
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| 77 | long ioptMax; /* max index into optimization symbol entries */
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| 78 | bfd_vma cbOptOffset; /* offset to optimization symbol entries */
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| 79 | long iauxMax; /* number of auxillary symbol entries */
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| 80 | bfd_vma cbAuxOffset; /* offset to start of auxillary symbol entries*/
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| 81 | long issMax; /* max index into local strings */
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| 82 | bfd_vma cbSsOffset; /* offset to start of local strings */
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| 83 | long issExtMax; /* max index into external strings */
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| 84 | bfd_vma cbSsExtOffset; /* offset to start of external strings */
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| 85 | long ifdMax; /* number of file descriptor entries */
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| 86 | bfd_vma cbFdOffset; /* offset to file descriptor table */
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| 87 | long crfd; /* number of relative file descriptor entries */
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| 88 | bfd_vma cbRfdOffset; /* offset to relative file descriptor table */
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| 89 | long iextMax; /* max index into external symbols */
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| 90 | bfd_vma cbExtOffset; /* offset to start of external symbol entries*/
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| 91 | /* If you add machine dependent fields, add them here */
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| 92 | } HDRR, *pHDRR;
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| 93 | #define cbHDRR sizeof(HDRR)
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| 94 | #define hdrNil ((pHDRR)0)
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| 95 |
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| 96 | /*
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| 97 | * The FDR and PDR structures speed mapping of address <-> name.
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| 98 | * They are sorted in ascending memory order and are kept in
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| 99 | * memory by CDB at runtime.
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| 100 | */
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| 101 |
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| 102 | /*
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| 103 | * File Descriptor
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| 104 | *
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| 105 | * There is one of these for EVERY FILE, whether compiled with
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| 106 | * full debugging symbols or not. The name of a file should be
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| 107 | * the path name given to the compiler. This allows the user
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| 108 | * to simply specify the names of the directories where the COMPILES
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| 109 | * were done, and we will be able to find their files.
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| 110 | * A field whose comment starts with "R - " indicates that it will be
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| 111 | * setup at runtime.
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| 112 | */
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| 113 | typedef struct fdr {
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| 114 | bfd_vma adr; /* memory address of beginning of file */
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| 115 | long rss; /* file name (of source, if known) */
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| 116 | long issBase; /* file's string space */
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| 117 | bfd_vma cbSs; /* number of bytes in the ss */
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| 118 | long isymBase; /* beginning of symbols */
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| 119 | long csym; /* count file's of symbols */
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| 120 | long ilineBase; /* file's line symbols */
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| 121 | long cline; /* count of file's line symbols */
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| 122 | long ioptBase; /* file's optimization entries */
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| 123 | long copt; /* count of file's optimization entries */
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| 124 | unsigned short ipdFirst;/* start of procedures for this file */
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| 125 | short cpd; /* count of procedures for this file */
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| 126 | long iauxBase; /* file's auxiliary entries */
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| 127 | long caux; /* count of file's auxiliary entries */
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| 128 | long rfdBase; /* index into the file indirect table */
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| 129 | long crfd; /* count file indirect entries */
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| 130 | unsigned lang: 5; /* language for this file */
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| 131 | unsigned fMerge : 1; /* whether this file can be merged */
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| 132 | unsigned fReadin : 1; /* true if it was read in (not just created) */
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| 133 | unsigned fBigendian : 1;/* if set, was compiled on big endian machine */
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| 134 | /* aux's will be in compile host's sex */
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| 135 | unsigned glevel : 2; /* level this file was compiled with */
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| 136 | unsigned reserved : 22; /* reserved for future use */
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| 137 | bfd_vma cbLineOffset; /* byte offset from header for this file ln's */
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| 138 | bfd_vma cbLine; /* size of lines for this file */
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| 139 | } FDR, *pFDR;
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| 140 | #define cbFDR sizeof(FDR)
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| 141 | #define fdNil ((pFDR)0)
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| 142 | #define ifdNil -1
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| 143 | #define ifdTemp 0
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| 144 | #define ilnNil -1
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| 145 |
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| 146 |
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| 147 | /*
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| 148 | * Procedure Descriptor
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| 149 | *
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| 150 | * There is one of these for EVERY TEXT LABEL.
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| 151 | * If a procedure is in a file with full symbols, then isym
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| 152 | * will point to the PROC symbols, else it will point to the
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| 153 | * global symbol for the label.
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| 154 | */
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| 155 |
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| 156 | typedef struct pdr {
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| 157 | bfd_vma adr; /* memory address of start of procedure */
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