1 /* symbols.h - 2 Copyright 1987, 1990, 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 3 2002, 2003, 2004, 2005 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, 51 Franklin Street - Fifth Floor, Boston, MA 20 02110-1301, 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_or_make (const char *name); 54 symbolS *symbol_make (const char *name); 55 symbolS *symbol_new (const char *name, segT segment, valueT value, 56 fragS * frag); 57 symbolS *symbol_create (const char *name, segT segment, valueT value, 58 fragS * frag); 59 symbolS *symbol_temp_new (segT, valueT, fragS *); 60 symbolS *symbol_temp_new_now (void); 61 symbolS *symbol_temp_make (void); 62 63 symbolS *colon (const char *sym_name); 64 void local_colon (int n); 65 void symbol_begin (void); 66 void symbol_print_statistics (FILE *); 67 void symbol_table_insert (symbolS * symbolP); 68 valueT resolve_symbol_value (symbolS *); 69 void resolve_local_symbol_values (void); 70 71 void print_symbol_value (symbolS *); 72 void print_expr (expressionS *); 73 void print_expr_1 (FILE *, expressionS *); 74 void print_symbol_value_1 (FILE *, symbolS *); 75 76 int dollar_label_defined (long l); 77 void dollar_label_clear (void); 78 void define_dollar_label (long l); 79 char *dollar_label_name (long l, int augend); 80 81 void fb_label_instance_inc (long label); 82 char *fb_label_name (long n, long augend); 83 84 extern void copy_symbol_attributes (symbolS *, symbolS *); 85 86 /* Get and set the values of symbols. These used to be macros. */ 87 extern valueT S_GET_VALUE (symbolS *); 88 extern void S_SET_VALUE (symbolS *, valueT); 89 90 #ifdef BFD_ASSEMBLER 91 extern int S_IS_FUNCTION (symbolS *); 92 extern int S_IS_EXTERNAL (symbolS *); 93 extern int S_IS_WEAK (symbolS *); 94 extern int S_IS_COMMON (symbolS *); 95 extern int S_IS_DEFINED (symbolS *); 96 extern int S_FORCE_RELOC (symbolS *, int); 97 extern int S_IS_DEBUG (symbolS *); 98 extern int S_IS_LOCAL (symbolS *); 99 extern int S_IS_STABD (symbolS *); 100 extern const char *S_GET_NAME (symbolS *); 101 extern segT S_GET_SEGMENT (symbolS *); 102 extern void S_SET_SEGMENT (symbolS *, segT); 103 extern void S_SET_EXTERNAL (symbolS *); 104 extern void S_SET_NAME (symbolS *, const char *); 105 extern void S_CLEAR_EXTERNAL (symbolS *); 106 extern void S_SET_WEAK (symbolS *); 107 extern void S_SET_THREAD_LOCAL (symbolS *); 108 #endif 109 110 #ifndef WORKING_DOT_WORD 111 struct broken_word 112 { 113 /* Linked list -- one of these structures per ".word x-y+C" 114 expression. */ 115 struct broken_word *next_broken_word; 116 /* Segment and subsegment for broken word. */ 117 segT seg; 118 subsegT subseg; 119 /* Which frag is this broken word in? */ 120 fragS *frag; 121 /* Where in the frag is it? */ 122 char *word_goes_here; 123 /* Where to add the break. */ 124 fragS *dispfrag; /* where to add the break */ 125 /* Operands of expression. */ 126 symbolS *add; 127 symbolS *sub; 128 offsetT addnum; 129 130 int added; /* nasty thing happened yet? */ 131 /* 1: added and has a long-jump */ 132 /* 2: added but uses someone elses long-jump */ 133 134 /* Pointer to broken_word with a similar long-jump. */ 135 struct broken_word *use_jump; 136 }; 137 extern struct broken_word *broken_words; 138 #endif /* ndef WORKING_DOT_WORD */ 139 140 /* 141 * Current means for getting from symbols to segments and vice verse. 142 * This will change for infinite-segments support (e.g. COFF). 143 */ 144 extern const segT N_TYPE_seg[]; /* subseg.c */ 145 146 #define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] ) 147 extern const short seg_N_TYPE[];/* subseg.c */ 148 149 #define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */ 150 151 void symbol_clear_list_pointers (symbolS * symbolP); 152 153 #ifdef SYMBOLS_NEED_BACKPOINTERS 154 155 void symbol_insert (symbolS * addme, symbolS * target, 156 symbolS ** rootP, symbolS ** lastP); 157 void symbol_remove (symbolS * symbolP, symbolS ** rootP, 158 symbolS ** lastP); 159 160 extern symbolS *symbol_previous (symbolS *); 161 162 #endif /* SYMBOLS_NEED_BACKPOINTERS */ 163 164 void verify_symbol_chain (symbolS * rootP, symbolS * lastP); 165 166 void symbol_append (symbolS * addme, symbolS * target, 167 symbolS ** rootP, symbolS ** lastP); 168 169 extern symbolS *symbol_next (symbolS *); 170 171 extern expressionS *symbol_get_value_expression (symbolS *); 172 extern void symbol_set_value_expression (symbolS *, const expressionS *); 173 extern offsetT *symbol_X_add_number (symbolS *); 174 extern void symbol_set_value_now (symbolS *); 175 extern void symbol_set_frag (symbolS *, fragS *); 176 extern fragS *symbol_get_frag (symbolS *); 177 extern void symbol_mark_used (symbolS *); 178 extern void symbol_clear_used (symbolS *); 179 extern int symbol_used_p (symbolS *); 180 extern void symbol_mark_used_in_reloc (symbolS *); 181 extern void symbol_clear_used_in_reloc (symbolS *); 182 extern int symbol_used_in_reloc_p (symbolS *); 183 extern void symbol_mark_mri_common (symbolS *); 184 extern void symbol_clear_mri_common (symbolS *); 185 extern int symbol_mri_common_p (symbolS *); 186 extern void symbol_mark_written (symbolS *); 187 extern void symbol_clear_written (symbolS *); 188 extern int symbol_written_p (symbolS *); 189 extern void symbol_mark_resolved (symbolS *); 190 extern int symbol_resolved_p (symbolS *); 191 extern int symbol_section_p (symbolS *); 192 extern int symbol_equated_p (symbolS *); 193 extern int symbol_equated_reloc_p (symbolS *); 194 extern int symbol_constant_p (symbolS *); 195 196 #ifdef BFD_ASSEMBLER 197 extern asymbol *symbol_get_bfdsym (symbolS *); 198 extern void symbol_set_bfdsym (symbolS *, asymbol *); 199 #endif 200 201 #ifdef OBJ_SYMFIELD_TYPE 202 OBJ_SYMFIELD_TYPE *symbol_get_obj (symbolS *); 203 void symbol_set_obj (symbolS *, OBJ_SYMFIELD_TYPE *); 204 #endif 205 206 #ifdef TC_SYMFIELD_TYPE 207 TC_SYMFIELD_TYPE *symbol_get_tc (symbolS *); 208 void symbol_set_tc (symbolS *, TC_SYMFIELD_TYPE *); 209 #endif 210