1 /* symbols.h - 2 Copyright 1987, 1990, 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 3 2002, 2003 Free Software Foundation, Inc. 4 5 This file is part of GAS, the GNU Assembler. 6 7 GAS is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 GAS is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GAS; see the file COPYING. If not, write to the Free 19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 20 02111-1307, USA. */ 21 22 #ifdef BFD_ASSEMBLER 23 /* The BFD code wants to walk the list in both directions. */ 24 #undef SYMBOLS_NEED_BACKPOINTERS 25 #define SYMBOLS_NEED_BACKPOINTERS 26 #endif 27 28 #ifndef BFD_ASSEMBLER 29 /* The non-BFD code expects to be able to manipulate the symbol fields 30 directly. */ 31 #include "struc-symbol.h" 32 #endif 33 34 extern struct obstack notes; /* eg FixS live here. */ 35 36 extern struct obstack cond_obstack; /* this is where we track .ifdef/.endif 37 (if we do that at all). */ 38 39 extern symbolS *symbol_rootP; /* all the symbol nodes */ 40 extern symbolS *symbol_lastP; /* last struct symbol we made, or NULL */ 41 42 extern symbolS abs_symbol; 43 44 extern int symbol_table_frozen; 45 46 /* This is non-zero if symbols are case sensitive, which is the 47 default. */ 48 extern int symbols_case_sensitive; 49 50 char *decode_local_label_name (char *s); 51 symbolS *symbol_find (const char *name); 52 symbolS *symbol_find_exact (const char *name); 53 symbolS *symbol_find_base (const char *name, int strip_underscore); 54 symbolS *symbol_find_or_make (const char *name); 55 symbolS *symbol_make (const char *name); 56 symbolS *symbol_new (const char *name, segT segment, valueT value, 57 fragS * frag); 58 symbolS *symbol_create (const char *name, segT segment, valueT value, 59 fragS * frag); 60 struct local_symbol *local_symbol_make (const char *name, segT section, 61 valueT value, fragS * frag); 62 symbolS *symbol_temp_new (segT, valueT, fragS *); 63 symbolS *symbol_temp_new_now (void); 64 symbolS *symbol_temp_make (void); 65 66 symbolS *colon (const char *sym_name); 67 void local_colon (int n); 68 void symbol_begin (void); 69 void symbol_print_statistics (FILE *); 70 void symbol_table_insert (symbolS * symbolP); 71 valueT resolve_symbol_value (symbolS *); 72 void resolve_local_symbol_values (void); 73 74 void print_symbol_value (symbolS *); 75 void print_expr (expressionS *); 76 void print_expr_1 (FILE *, expressionS *); 77 void print_symbol_value_1 (FILE *, symbolS *); 78 79 int dollar_label_defined (long l); 80 void dollar_label_clear (void); 81 void define_dollar_label (long l); 82 char *dollar_label_name (long l, int augend); 83 84 void fb_label_instance_inc (long label); 85 char *fb_label_name (long n, long augend); 86 87 extern void copy_symbol_attributes (symbolS *, symbolS *); 88 89 /* Get and set the values of symbols. These used to be macros. */ 90 extern valueT S_GET_VALUE (symbolS *); 91 extern void S_SET_VALUE (symbolS *, valueT); 92 93 #ifdef BFD_ASSEMBLER 94 extern int S_IS_FUNCTION (symbolS *); 95 extern int S_IS_EXTERNAL (symbolS *); 96 extern int S_IS_WEAK (symbolS *); 97 extern int S_IS_COMMON (symbolS *); 98 extern int S_IS_DEFINED (symbolS *); 99 extern int S_FORCE_RELOC (symbolS *, int); 100 extern int S_IS_DEBUG (symbolS *); 101 extern int S_IS_LOCAL (symbolS *); 102 extern int S_IS_EXTERN (symbolS *); 103 extern int S_IS_STABD (symbolS *); 104 extern const char *S_GET_NAME (symbolS *); 105 extern segT S_GET_SEGMENT (symbolS *); 106 extern void S_SET_SEGMENT (symbolS *, segT); 107 extern void S_SET_EXTERNAL (symbolS *); 108 extern void S_SET_NAME (symbolS *, char *); 109 extern void S_CLEAR_EXTERNAL (symbolS *); 110 extern void S_SET_WEAK (symbolS *); 111 extern void S_SET_THREAD_LOCAL (symbolS *); 112 #endif 113 114 #ifndef WORKING_DOT_WORD 115 struct broken_word 116 { 117 /* Linked list -- one of these structures per ".word x-y+C" 118 expression. */ 119 struct broken_word *next_broken_word; 120 /* Segment and subsegment for broken word. */ 121 segT seg; 122 subsegT subseg; 123 /* Which frag is this broken word in? */ 124 fragS *frag; 125 /* Where in the frag is it? */ 126 char *word_goes_here; 127 /* Where to add the break. */ 128 fragS *dispfrag; /* where to add the break */ 129 /* Operands of expression. */ 130 symbolS *add; 131 symbolS *sub; 132 offsetT addnum; 133 134 int added; /* nasty thing happened yet? */ 135 /* 1: added and has a long-jump */ 136 /* 2: added but uses someone elses long-jump */ 137 138 /* Pointer to broken_word with a similar long-jump. */ 139 struct broken_word *use_jump; 140 }; 141 extern struct broken_word *broken_words; 142 #endif /* ndef WORKING_DOT_WORD */ 143 144 /* 145 * Current means for getting from symbols to segments and vice verse. 146 * This will change for infinite-segments support (e.g. COFF). 147 */ 148 extern const segT N_TYPE_seg[]; /* subseg.c */ 149 150 #define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] ) 151 extern const short seg_N_TYPE[];/* subseg.c */ 152 153 #define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */ 154 155 void symbol_clear_list_pointers (symbolS * symbolP); 156 157 #ifdef SYMBOLS_NEED_BACKPOINTERS 158 159 void symbol_insert (symbolS * addme, symbolS * target, 160 symbolS ** rootP, symbolS ** lastP); 161 void symbol_remove (symbolS * symbolP, symbolS ** rootP, 162 symbolS ** lastP); 163 164 extern symbolS *symbol_previous (symbolS *); 165 166 #endif /* SYMBOLS_NEED_BACKPOINTERS */ 167 168 void verify_symbol_chain (symbolS * rootP, symbolS * lastP); 169 void verify_symbol_chain_2 (symbolS * symP); 170 171 void symbol_append (symbolS * addme, symbolS * target, 172 symbolS ** rootP, symbolS ** lastP); 173 174 extern symbolS *symbol_next (symbolS *); 175 176 extern expressionS *symbol_get_value_expression (symbolS *); 177 extern void symbol_set_value_expression (symbolS *, const expressionS *); 178 extern void symbol_set_value_now (symbolS *); 179 extern void symbol_set_frag (symbolS *, fragS *); 180 extern fragS *symbol_get_frag (symbolS *); 181 extern void symbol_mark_used (symbolS *); 182 extern void symbol_clear_used (symbolS *); 183 extern int symbol_used_p (symbolS *); 184 extern void symbol_mark_used_in_reloc (symbolS *); 185 extern void symbol_clear_used_in_reloc (symbolS *); 186 extern int symbol_used_in_reloc_p (symbolS *); 187 extern void symbol_mark_mri_common (symbolS *); 188 extern void symbol_clear_mri_common (symbolS *); 189 extern int symbol_mri_common_p (symbolS *); 190 extern void symbol_mark_written (symbolS *); 191 extern void symbol_clear_written (symbolS *); 192 extern int symbol_written_p (symbolS *); 193 extern void symbol_mark_resolved (symbolS *); 194 extern int symbol_resolved_p (symbolS *); 195 extern int symbol_section_p (symbolS *); 196 extern int symbol_equated_p (symbolS *); 197 extern int symbol_equated_reloc_p (symbolS *); 198 extern int symbol_constant_p (symbolS *); 199 200 #ifdef BFD_ASSEMBLER 201 extern asymbol *symbol_get_bfdsym (symbolS *); 202 extern void symbol_set_bfdsym (symbolS *, asymbol *); 203 #endif 204 205 #ifdef OBJ_SYMFIELD_TYPE 206 OBJ_SYMFIELD_TYPE *symbol_get_obj (symbolS *); 207 void symbol_set_obj (symbolS *, OBJ_SYMFIELD_TYPE *); 208 #endif 209 210 #ifdef TC_SYMFIELD_TYPE 211 TC_SYMFIELD_TYPE *symbol_get_tc (symbolS *); 212 void symbol_set_tc (symbolS *, TC_SYMFIELD_TYPE *); 213 #endif 214