1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1988 AT&T */ 23 /* All Rights Reserved */ 24 25 26 #ifndef _SYMS_H 27 #define _SYMS_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 2.8 */ 30 31 /* Storage Classes are defined in storclass.h */ 32 #include <storclass.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* Number of characters in a symbol name */ 39 #define SYMNMLEN 8 40 /* Number of characters in a file name */ 41 #define FILNMLEN 14 42 /* Number of array dimensions in auxiliary entry */ 43 #define DIMNUM 4 44 45 struct syment 46 { 47 union 48 { 49 char _n_name[SYMNMLEN]; /* old COFF version */ 50 struct 51 { 52 long _n_zeroes; /* new == 0 */ 53 long _n_offset; /* offset into string table */ 54 } _n_n; 55 char *_n_nptr[2]; /* allows for overlaying */ 56 } _n; 57 unsigned long n_value; /* value of symbol */ 58 short n_scnum; /* section number */ 59 unsigned short n_type; /* type and derived type */ 60 char n_sclass; /* storage class */ 61 char n_numaux; /* number of aux. entries */ 62 }; 63 64 #define n_name _n._n_name 65 #define n_nptr _n._n_nptr[1] 66 #define n_zeroes _n._n_n._n_zeroes 67 #define n_offset _n._n_n._n_offset 68 69 /* 70 * Relocatable symbols have a section number of the 71 * section in which they are defined. Otherwise, section 72 * numbers have the following meanings: 73 */ 74 /* undefined symbol */ 75 #define N_UNDEF 0 76 /* value of symbol is absolute */ 77 #define N_ABS -1 78 /* special debugging symbol -- value of symbol is meaningless */ 79 #define N_DEBUG -2 80 /* indicates symbol needs transfer vector (preload) */ 81 #define N_TV (unsigned short)-3 82 83 /* indicates symbol needs transfer vector (postload) */ 84 85 #define P_TV (unsigned short)-4 86 87 /* 88 * The fundamental type of a symbol packed into the low 89 * 4 bits of the word. 90 */ 91 92 #define _EF ".ef" 93 94 #define T_NULL 0 95 #define T_ARG 1 /* function argument (only used by compiler) */ 96 #define T_CHAR 2 /* character */ 97 #define T_SHORT 3 /* short integer */ 98 #define T_INT 4 /* integer */ 99 #define T_LONG 5 /* long integer */ 100 #define T_FLOAT 6 /* floating point */ 101 #define T_DOUBLE 7 /* double word */ 102 #define T_STRUCT 8 /* structure */ 103 #define T_UNION 9 /* union */ 104 #define T_ENUM 10 /* enumeration */ 105 #define T_MOE 11 /* member of enumeration */ 106 #define T_UCHAR 12 /* unsigned character */ 107 #define T_USHORT 13 /* unsigned short */ 108 #define T_UINT 14 /* unsigned integer */ 109 #define T_ULONG 15 /* unsigned long */ 110 111 /* 112 * derived types are: 113 */ 114 115 #define DT_NON 0 /* no derived type */ 116 #define DT_PTR 1 /* pointer */ 117 #define DT_FCN 2 /* function */ 118 #define DT_ARY 3 /* array */ 119 120 /* 121 * type packing constants 122 */ 123 124 #define N_BTMASK 017 125 #define N_TMASK 060 126 #define N_TMASK1 0300 127 #define N_TMASK2 0360 128 #define N_BTSHFT 4 129 #define N_TSHIFT 2 130 131 /* 132 * MACROS 133 */ 134 135 /* Basic Type of x */ 136 137 #define BTYPE(x) ((x) & N_BTMASK) 138 139 /* Is x a pointer ? */ 140 141 #define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) 142 143 /* Is x a function ? */ 144 145 #define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) 146 147 /* Is x an array ? */ 148 149 #define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) 150 151 /* Is x a structure, union, or enumeration TAG? */ 152 153 #define ISTAG(x) ((x) == C_STRTAG || (x) == C_UNTAG || (x) == C_ENTAG) 154 155 #define INCREF(x) ((((x)&~N_BTMASK)<<N_TSHIFT)|(DT_PTR<<N_BTSHFT)|(x&N_BTMASK)) 156 157 #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) 158 159 /* 160 * AUXILIARY ENTRY FORMAT 161 */ 162 163 union auxent 164 { 165 struct 166 { 167 long x_tagndx; /* str, un, or enum tag indx */ 168 union 169 { 170 struct 171 { 172 unsigned short x_lnno; /* declaration line */ 173 /* number */ 174 unsigned short x_size; /* str, union, array */ 175 /* size */ 176 } x_lnsz; 177 long x_fsize; /* size of function */ 178 } x_misc; 179 union 180 { 181 struct /* if ISFCN, tag, or .bb */ 182 { 183 long x_lnnoptr; /* ptr to fcn line # */ 184 long x_endndx; /* entry ndx past */ 185 /* block end */ 186 } x_fcn; 187 struct /* if ISARY, up to 4 dimen. */ 188 { 189 unsigned short x_dimen[DIMNUM]; 190 } x_ary; 191 } x_fcnary; 192 unsigned short x_tvndx; /* tv index */ 193 } x_sym; 194 struct 195 { 196 char x_fname[FILNMLEN]; 197 } x_file; 198 struct 199 { 200 long x_scnlen; /* section length */ 201 unsigned short x_nreloc; /* number of reloc entries */ 202 unsigned short x_nlinno; /* number of line numbers */ 203 } x_scn; 204 205 struct 206 { 207 long x_tvfill; /* tv fill value */ 208 unsigned short x_tvlen; /* length of .tv */ 209 unsigned short x_tvran[2]; /* tv range */ 210 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ 211 }; 212 213 #define SYMENT struct syment 214 #define SYMESZ 18 /* sizeof(SYMENT) */ 215 216 #define AUXENT union auxent 217 #define AUXESZ 18 /* sizeof(AUXENT) */ 218 219 /* Defines for "special" symbols */ 220 221 #define _ETEXT "etext" 222 #define _EDATA "edata" 223 #define _END "end" 224 #define _START "_start" 225 226 #ifdef __cplusplus 227 } 228 #endif 229 230 #endif /* _SYMS_H */ 231