| 1 | /* symbols.h - |
| 2 | Copyright (C) 1987-2019 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 19 | 02110-1301, USA. */ |
| 20 | |
| 21 | extern struct obstack notes; /* eg FixS live here. */ |
| 22 | |
| 23 | extern struct obstack cond_obstack; /* this is where we track .ifdef/.endif |
| 24 | (if we do that at all). */ |
| 25 | |
| 26 | extern symbolS *symbol_rootP; /* all the symbol nodes */ |
| 27 | extern symbolS *symbol_lastP; /* last struct symbol we made, or NULL */ |
| 28 | |
| 29 | extern symbolS abs_symbol; |
| 30 | extern symbolS dot_symbol; |
| 31 | |
| 32 | extern int symbol_table_frozen; |
| 33 | |
| 34 | /* This is non-zero if symbols are case sensitive, which is the |
| 35 | default. */ |
| 36 | extern int symbols_case_sensitive; |
| 37 | |
| 38 | char * symbol_relc_make_expr (expressionS *); |
| 39 | char * symbol_relc_make_sym (symbolS *); |
| 40 | char * symbol_relc_make_value (offsetT); |
| 41 | char *decode_local_label_name (char *s); |
| 42 | symbolS *symbol_find (const char *name); |
| 43 | symbolS *symbol_find_noref (const char *name, int noref); |
| 44 | symbolS *symbol_find_exact (const char *name); |
| 45 | symbolS *symbol_find_exact_noref (const char *name, int noref); |
| 46 | symbolS *symbol_find_or_make (const char *name); |
| 47 | symbolS *symbol_make (const char *name); |
| 48 | symbolS *symbol_new (const char *name, segT segment, valueT value, |
| 49 | fragS * frag); |
| 50 | symbolS *symbol_create (const char *name, segT segment, valueT value, |
| 51 | fragS * frag); |
| 52 | struct local_symbol *local_symbol_make (const char *name, segT section, |
| 53 | valueT val, fragS *frag); |
| 54 | symbolS *symbol_clone (symbolS *, int); |
| 55 | #undef symbol_clone_if_forward_ref |
| 56 | symbolS *symbol_clone_if_forward_ref (symbolS *, int); |
| 57 | #define symbol_clone_if_forward_ref(s) symbol_clone_if_forward_ref (s, 0) |
| 58 | symbolS *symbol_temp_new (segT, valueT, fragS *); |
| 59 | symbolS *symbol_temp_new_now (void); |
| 60 | symbolS *symbol_temp_new_now_octets (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 dot_symbol_init (void); |
| 67 | void symbol_print_statistics (FILE *); |
| 68 | void symbol_table_insert (symbolS * symbolP); |
| 69 | valueT resolve_symbol_value (symbolS *); |
| 70 | void resolve_local_symbol_values (void); |
| 71 | int snapshot_symbol (symbolS **, valueT *, segT *, fragS **); |
| 72 | |
| 73 | void print_symbol_value (symbolS *); |
| 74 | void print_expr (expressionS *); |
| 75 | void print_expr_1 (FILE *, expressionS *); |
| 76 | void print_symbol_value_1 (FILE *, symbolS *); |
| 77 | |
| 78 | int dollar_label_defined (long l); |
| 79 | void dollar_label_clear (void); |
| 80 | void define_dollar_label (long l); |
| 81 | char *dollar_label_name (long l, int augend); |
| 82 | |
| 83 | void fb_label_instance_inc (long label); |
| 84 | char *fb_label_name (long n, long augend); |
| 85 | |
| 86 | extern void copy_symbol_attributes (symbolS *, symbolS *); |
| 87 | |
| 88 | /* Get and set the values of symbols. These used to be macros. */ |
| 89 | extern valueT S_GET_VALUE (symbolS *); |
| 90 | extern void S_SET_VALUE (symbolS *, valueT); |
| 91 | |
| 92 | extern int S_IS_FUNCTION (symbolS *); |
| 93 | extern int S_IS_EXTERNAL (symbolS *); |
| 94 | extern int S_IS_WEAK (symbolS *); |
| 95 | extern int S_IS_WEAKREFR (symbolS *); |
| 96 | extern int S_IS_WEAKREFD (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_STABD (symbolS *); |
| 103 | extern int S_CAN_BE_REDEFINED (const symbolS *); |
| 104 | extern int S_IS_VOLATILE (const symbolS *); |
| 105 | extern int S_IS_FORWARD_REF (const symbolS *); |
| 106 | extern const char *S_GET_NAME (symbolS *); |
| 107 | extern segT S_GET_SEGMENT (symbolS *); |
| 108 | extern void S_SET_SEGMENT (symbolS *, segT); |
| 109 | extern void S_SET_EXTERNAL (symbolS *); |
| 110 | extern void S_SET_NAME (symbolS *, const char *); |
| 111 | extern void S_CLEAR_EXTERNAL (symbolS *); |
| 112 | extern void S_SET_WEAK (symbolS *); |
| 113 | extern void S_SET_WEAKREFR (symbolS *); |
| 114 | extern void S_CLEAR_WEAKREFR (symbolS *); |
| 115 | extern void S_SET_WEAKREFD (symbolS *); |
| 116 | extern void S_CLEAR_WEAKREFD (symbolS *); |
| 117 | extern void S_SET_THREAD_LOCAL (symbolS *); |
| 118 | extern void S_SET_VOLATILE (symbolS *); |
| 119 | extern void S_CLEAR_VOLATILE (symbolS *); |
| 120 | extern void S_SET_FORWARD_REF (symbolS *); |
| 121 | |
| 122 | #ifndef WORKING_DOT_WORD |
| 123 | struct broken_word |
| 124 | { |
| 125 | /* Linked list -- one of these structures per ".word x-y+C" |
| 126 | expression. */ |
| 127 | struct broken_word *next_broken_word; |
| 128 | /* Segment and subsegment for broken word. */ |
| 129 | segT seg; |
| 130 | subsegT subseg; |
| 131 | /* Which frag is this broken word in? */ |
| 132 | fragS *frag; |
| 133 | /* Where in the frag is it? */ |
| 134 | char *word_goes_here; |
| 135 | /* Where to add the break. */ |
| 136 | fragS *dispfrag; /* where to add the break */ |
| 137 | /* Operands of expression. */ |
| 138 | symbolS *add; |
| 139 | symbolS *sub; |
| 140 | offsetT addnum; |
| 141 | |
| 142 | int added; /* nasty thing happened yet? */ |
| 143 | /* 1: added and has a long-jump */ |
| 144 | /* 2: added but uses someone elses long-jump */ |
| 145 | |
| 146 | /* Pointer to broken_word with a similar long-jump. */ |
| 147 | struct broken_word *use_jump; |
| 148 | }; |
| 149 | extern struct broken_word *broken_words; |
| 150 | #endif /* ifdef WORKING_DOT_WORD */ |
| 151 | |
| 152 | /* |
| 153 | * Current means for getting from symbols to segments and vice verse. |
| 154 | * This will change for infinite-segments support (e.g. COFF). |
| 155 | */ |
| 156 | extern const segT N_TYPE_seg[]; /* subseg.c */ |
| 157 | |
| 158 | #define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] ) |
| 159 | extern const short seg_N_TYPE[];/* subseg.c */ |
| 160 | |
| 161 | #define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */ |
| 162 | |
| 163 | void symbol_clear_list_pointers (symbolS * symbolP); |
| 164 | |
| 165 | void symbol_insert (symbolS * addme, symbolS * target, |
| 166 | symbolS ** rootP, symbolS ** lastP); |
| 167 | void symbol_remove (symbolS * symbolP, symbolS ** rootP, |
| 168 | symbolS ** lastP); |
| 169 | |
| 170 | extern symbolS *symbol_previous (symbolS *); |
| 171 | |
| 172 | extern int symbol_on_chain (symbolS *s, symbolS *rootPP, symbolS *lastPP); |
| 173 | |
| 174 | void verify_symbol_chain (symbolS * rootP, symbolS * lastP); |
| 175 | |
| 176 | void symbol_append (symbolS * addme, symbolS * target, |
| 177 | symbolS ** rootP, symbolS ** lastP); |
| 178 | |
| 179 | extern symbolS *symbol_next (symbolS *); |
| 180 | |
| 181 | extern expressionS *symbol_get_value_expression (symbolS *); |
| 182 | extern void symbol_set_value_expression (symbolS *, const expressionS *); |
| 183 | extern offsetT *symbol_X_add_number (symbolS *); |
| 184 | extern void symbol_set_value_now (symbolS *); |
| 185 | extern void symbol_set_value_now_octets (symbolS *); |
| 186 | extern void symbol_set_frag (symbolS *, fragS *); |
| 187 | extern fragS *symbol_get_frag (symbolS *); |
| 188 | extern void symbol_mark_used (symbolS *); |
| 189 | extern void symbol_clear_used (symbolS *); |
| 190 | extern int symbol_used_p (symbolS *); |
| 191 | extern void symbol_mark_used_in_reloc (symbolS *); |
| 192 | extern void symbol_clear_used_in_reloc (symbolS *); |
| 193 | extern int symbol_used_in_reloc_p (symbolS *); |
| 194 | extern void symbol_mark_mri_common (symbolS *); |
| 195 | extern void symbol_clear_mri_common (symbolS *); |
| 196 | extern int symbol_mri_common_p (symbolS *); |
| 197 | extern void symbol_mark_written (symbolS *); |
| 198 | extern void symbol_clear_written (symbolS *); |
| 199 | extern int symbol_written_p (symbolS *); |
| 200 | extern void symbol_mark_resolved (symbolS *); |
| 201 | extern int symbol_resolved_p (symbolS *); |
| 202 | extern int symbol_section_p (symbolS *); |
| 203 | extern int symbol_equated_p (symbolS *); |
| 204 | extern int symbol_equated_reloc_p (symbolS *); |
| 205 | extern int symbol_constant_p (symbolS *); |
| 206 | extern int symbol_shadow_p (symbolS *); |
| 207 | extern symbolS *symbol_symbolS (symbolS *); |
| 208 | extern asymbol *symbol_get_bfdsym (symbolS *); |
| 209 | extern void symbol_set_bfdsym (symbolS *, asymbol *); |
| 210 | extern int symbol_same_p (symbolS *, symbolS *); |
| 211 | extern int symbol_octets_p (symbolS *); |
| 212 | |
| 213 | #ifdef OBJ_SYMFIELD_TYPE |
| 214 | OBJ_SYMFIELD_TYPE *symbol_get_obj (symbolS *); |
| 215 | void symbol_set_obj (symbolS *, OBJ_SYMFIELD_TYPE *); |
| 216 | #endif |
| 217 | |
| 218 | #ifdef TC_SYMFIELD_TYPE |
| 219 | TC_SYMFIELD_TYPE *symbol_get_tc (symbolS *); |
| 220 | void symbol_set_tc (symbolS *, TC_SYMFIELD_TYPE *); |
| 221 | #endif |