| 1 | /* symbols.h - |
| 2 | Copyright 1987, 1990, 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001 |
| 3 | 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 PARAMS ((char *s)); |
| 51 | symbolS *symbol_find PARAMS ((CONST char *name)); |
| 52 | symbolS *symbol_find_base PARAMS ((CONST char *name, int strip_underscore)); |
| 53 | symbolS *symbol_find_or_make PARAMS ((const char *name)); |
| 54 | symbolS *symbol_make PARAMS ((CONST char *name)); |
| 55 | symbolS *symbol_new PARAMS ((CONST char *name, segT segment, valueT value, |
| 56 | fragS * frag)); |
| 57 | symbolS *symbol_create PARAMS ((CONST char *name, segT segment, valueT value, |
| 58 | fragS * frag)); |
| 59 | symbolS *colon PARAMS ((const char *sym_name)); |
| 60 | void local_colon PARAMS ((int n)); |
| 61 | void symbol_begin PARAMS ((void)); |
| 62 | void symbol_print_statistics PARAMS ((FILE *)); |
| 63 | void symbol_table_insert PARAMS ((symbolS * symbolP)); |
| 64 | valueT resolve_symbol_value PARAMS ((symbolS *)); |
| 65 | void resolve_local_symbol_values PARAMS ((void)); |
| 66 | |
| 67 | void print_symbol_value PARAMS ((symbolS *)); |
| 68 | void print_expr PARAMS ((expressionS *)); |
| 69 | void print_expr_1 PARAMS ((FILE *, expressionS *)); |
| 70 | void print_symbol_value_1 PARAMS ((FILE *, symbolS *)); |
| 71 | |
| 72 | int dollar_label_defined PARAMS ((long l)); |
| 73 | void dollar_label_clear PARAMS ((void)); |
| 74 | void define_dollar_label PARAMS ((long l)); |
| 75 | char *dollar_label_name PARAMS ((long l, int augend)); |
| 76 | |
| 77 | void fb_label_instance_inc PARAMS ((long label)); |
| 78 | char *fb_label_name PARAMS ((long n, long augend)); |
| 79 | |
| 80 | extern void copy_symbol_attributes PARAMS ((symbolS *, symbolS *)); |
| 81 | |
| 82 | /* Get and set the values of symbols. These used to be macros. */ |
| 83 | extern valueT S_GET_VALUE PARAMS ((symbolS *)); |
| 84 | extern void S_SET_VALUE PARAMS ((symbolS *, valueT)); |
| 85 | |
| 86 | #ifdef BFD_ASSEMBLER |
| 87 | extern int S_IS_FUNCTION PARAMS ((symbolS *)); |
| 88 | extern int S_IS_EXTERNAL PARAMS ((symbolS *)); |
| 89 | extern int S_IS_WEAK PARAMS ((symbolS *)); |
| 90 | extern int S_IS_COMMON PARAMS ((symbolS *)); |
| 91 | extern int S_IS_DEFINED PARAMS ((symbolS *)); |
| 92 | extern int S_IS_DEBUG PARAMS ((symbolS *)); |
| 93 | extern int S_IS_LOCAL PARAMS ((symbolS *)); |
| 94 | extern int S_IS_EXTERN PARAMS ((symbolS *)); |
| 95 | extern int S_IS_STABD PARAMS ((symbolS *)); |
| 96 | extern CONST char *S_GET_NAME PARAMS ((symbolS *)); |
| 97 | extern segT S_GET_SEGMENT PARAMS ((symbolS *)); |
| 98 | extern void S_SET_SEGMENT PARAMS ((symbolS *, segT)); |
| 99 | extern void S_SET_EXTERNAL PARAMS ((symbolS *)); |
| 100 | extern void S_SET_NAME PARAMS ((symbolS *, char *)); |
| 101 | extern void S_CLEAR_EXTERNAL PARAMS ((symbolS *)); |
| 102 | extern void S_SET_WEAK PARAMS ((symbolS *)); |
| 103 | #endif |
| 104 | |
| 105 | #ifndef WORKING_DOT_WORD |
| 106 | struct broken_word |
| 107 | { |
| 108 | /* Linked list -- one of these structures per ".word x-y+C" |
| 109 | expression. */ |
| 110 | struct broken_word *next_broken_word; |
| 111 | /* Segment and subsegment for broken word. */ |
| 112 | segT seg; |
| 113 | subsegT subseg; |
| 114 | /* Which frag is this broken word in? */ |
| 115 | fragS *frag; |
| 116 | /* Where in the frag is it? */ |
| 117 | char *word_goes_here; |
| 118 | /* Where to add the break. */ |
| 119 | fragS *dispfrag; /* where to add the break */ |
| 120 | /* Operands of expression. */ |
| 121 | symbolS *add; |
| 122 | symbolS *sub; |
| 123 | offsetT addnum; |
| 124 | |
| 125 | int added; /* nasty thing happend yet? */ |
| 126 | /* 1: added and has a long-jump */ |
| 127 | /* 2: added but uses someone elses long-jump */ |
| 128 | |
| 129 | /* Pointer to broken_word with a similar long-jump. */ |
| 130 | struct broken_word *use_jump; |
| 131 | }; |
| 132 | extern struct broken_word *broken_words; |
| 133 | #endif /* ndef WORKING_DOT_WORD */ |
| 134 | |
| 135 | /* |
| 136 | * Current means for getting from symbols to segments and vice verse. |
| 137 | * This will change for infinite-segments support (e.g. COFF). |
| 138 | */ |
| 139 | extern const segT N_TYPE_seg[]; /* subseg.c */ |
| 140 | |
| 141 | #define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] ) |
| 142 | extern const short seg_N_TYPE[];/* subseg.c */ |
| 143 | |
| 144 | #define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */ |
| 145 | |
| 146 | void symbol_clear_list_pointers PARAMS ((symbolS * symbolP)); |
| 147 | |
| 148 | #ifdef SYMBOLS_NEED_BACKPOINTERS |
| 149 | |
| 150 | void symbol_insert PARAMS ((symbolS * addme, symbolS * target, |
| 151 | symbolS ** rootP, symbolS ** lastP)); |
| 152 | void symbol_remove PARAMS ((symbolS * symbolP, symbolS ** rootP, |
| 153 | symbolS ** lastP)); |
| 154 | |
| 155 | extern symbolS *symbol_previous PARAMS ((symbolS *)); |
| 156 | |
| 157 | #endif /* SYMBOLS_NEED_BACKPOINTERS */ |
| 158 | |
| 159 | void verify_symbol_chain PARAMS ((symbolS * rootP, symbolS * lastP)); |
| 160 | void verify_symbol_chain_2 PARAMS ((symbolS * symP)); |
| 161 | |
| 162 | void symbol_append PARAMS ((symbolS * addme, symbolS * target, |
| 163 | symbolS ** rootP, symbolS ** lastP)); |
| 164 | |
| 165 | extern symbolS *symbol_next PARAMS ((symbolS *)); |
| 166 | |
| 167 | extern expressionS *symbol_get_value_expression PARAMS ((symbolS *)); |
| 168 | extern void symbol_set_value_expression PARAMS ((symbolS *, |
| 169 | const expressionS *)); |
| 170 | extern void symbol_set_frag PARAMS ((symbolS *, fragS *)); |
| 171 | extern fragS *symbol_get_frag PARAMS ((symbolS *)); |
| 172 | extern void symbol_mark_used PARAMS ((symbolS *)); |
| 173 | extern void symbol_clear_used PARAMS ((symbolS *)); |
| 174 | extern int symbol_used_p PARAMS ((symbolS *)); |
| 175 | extern void symbol_mark_used_in_reloc PARAMS ((symbolS *)); |
| 176 | extern void symbol_clear_used_in_reloc PARAMS ((symbolS *)); |
| 177 | extern int symbol_used_in_reloc_p PARAMS ((symbolS *)); |
| 178 | extern void symbol_mark_mri_common PARAMS ((symbolS *)); |
| 179 | extern void symbol_clear_mri_common PARAMS ((symbolS *)); |
| 180 | extern int symbol_mri_common_p PARAMS ((symbolS *)); |
| 181 | extern void symbol_mark_written PARAMS ((symbolS *)); |
| 182 | extern void symbol_clear_written PARAMS ((symbolS *)); |
| 183 | extern int symbol_written_p PARAMS ((symbolS *)); |
| 184 | extern void symbol_mark_resolved PARAMS ((symbolS *)); |
| 185 | extern int symbol_resolved_p PARAMS ((symbolS *)); |
| 186 | extern int symbol_section_p PARAMS ((symbolS *)); |
| 187 | extern int symbol_equated_p PARAMS ((symbolS *)); |
| 188 | extern int symbol_constant_p PARAMS ((symbolS *)); |
| 189 | |
| 190 | #ifdef BFD_ASSEMBLER |
| 191 | extern asymbol *symbol_get_bfdsym PARAMS ((symbolS *)); |
| 192 | extern void symbol_set_bfdsym PARAMS ((symbolS *, asymbol *)); |
| 193 | #endif |
| 194 | |
| 195 | #ifdef OBJ_SYMFIELD_TYPE |
| 196 | OBJ_SYMFIELD_TYPE *symbol_get_obj PARAMS ((symbolS *)); |
| 197 | void symbol_set_obj PARAMS ((symbolS *, OBJ_SYMFIELD_TYPE *)); |
| 198 | #endif |
| 199 | |
| 200 | #ifdef TC_SYMFIELD_TYPE |
| 201 | TC_SYMFIELD_TYPE *symbol_get_tc PARAMS ((symbolS *)); |
| 202 | void symbol_set_tc PARAMS ((symbolS *, TC_SYMFIELD_TYPE *)); |
| 203 | #endif |