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Diffstat (limited to 'gas/struc-symbol.h')
| -rw-r--r-- | gas/struc-symbol.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/gas/struc-symbol.h b/gas/struc-symbol.h new file mode 100644 index 0000000..2827648 --- /dev/null +++ b/gas/struc-symbol.h @@ -0,0 +1,113 @@ +/* struct_symbol.h - Internal symbol structure + Copyright (C) 1987 Free Software Foundation, Inc. + +This file is part of GAS, the GNU Assembler. + +GAS is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 1, or (at your option) +any later version. + +GAS is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GAS; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +struct symbol /* our version of an nlist node */ +{ + obj_symbol_type sy_symbol; /* what we write in .o file (if permitted) */ + unsigned long sy_name_offset; /* 4-origin position of sy_name in symbols */ + /* part of object file. */ + /* 0 for (nameless) .stabd symbols. */ + /* Not used until write_object_file() time. */ + long sy_number; /* 24 bit symbol number. */ + /* Symbol numbers start at 0 and are */ + /* unsigned. */ + struct symbol *sy_next; /* forward chain, or NULL */ +#ifdef SYMBOLS_NEED_BACKPOINTERS + struct symbol *sy_previous; /* backward chain, or NULL */ +#endif /* SYMBOLS_NEED_BACKPOINTERS */ + struct frag *sy_frag; /* NULL or -> frag this symbol attaches to. */ + struct symbol *sy_forward; /* value is really that of this other symbol */ +/* We will probably want to add a sy_segment here soon. */ +}; + +typedef struct symbol symbolS; + +typedef unsigned valueT; /* The type of n_value. Helps casting. */ + +#ifndef WORKING_DOT_WORD +struct broken_word { + struct broken_word *next_broken_word;/* One of these strucs per .word x-y */ + fragS *frag; /* Which frag its in */ + char *word_goes_here;/* Where in the frag it is */ + fragS *dispfrag; /* where to add the break */ + symbolS *add; /* symbol_x */ + symbolS *sub; /* - symbol_y */ + long addnum; /* + addnum */ + int added; /* nasty thing happend yet? */ + /* 1: added and has a long-jump */ + /* 2: added but uses someone elses long-jump */ + struct broken_word *use_jump; /* points to broken_word with a similar + long-jump */ +}; +extern struct broken_word *broken_words; +#endif /* ndef WORKING_DOT_WORD */ + +/* + * Current means for getting from symbols to segments and vice verse. + * This will change for infinite-segments support (e.g. COFF). + */ +/* #define SYMBOL_TYPE_TO_SEGMENT(symP) ( N_TYPE_seg [(int) (symP)->sy_type & N_TYPE] ) */ +extern segT N_TYPE_seg[]; /* subseg.c */ + +#define SEGMENT_TO_SYMBOL_TYPE(seg) ( seg_N_TYPE [(int) (seg)] ) +extern const short seg_N_TYPE[]; /* subseg.c */ + +#define N_REGISTER 30 /* Fake N_TYPE value for SEG_REGISTER */ + +#ifdef SYMBOLS_NEED_BACKPOINTERS +#ifdef __STDC__ + +void symbol_clear_list_pointers(symbolS *symbolP); +void symbol_insert(symbolS *addme, symbolS *target, symbolS **rootP, symbolS **lastP); +void symbol_remove(symbolS *symbolP, symbolS **rootP, symbolS **lastP); +void verify_symbol_chain(symbolS *rootP, symbolS *lastP); + +#else /* __STDC__ */ + +void symbol_clear_list_pointers(); +void symbol_insert(); +void symbol_remove(); +void verify_symbol_chain(); + +#endif /* __STDC__ */ + +#define symbol_previous(s) ((s)->sy_previous) + +#else /* SYMBOLS_NEED_BACKPOINTERS */ + +#define symbol_clear_list_pointers(clearme) {clearme->sy_next = NULL;} + +#endif /* SYMBOLS_NEED_BACKPOINTERS */ + +#ifdef __STDC__ +void symbol_append(symbolS *addme, symbolS *target, symbolS **rootP, symbolS **lastP); +#else /* __STDC__ */ +void symbol_append(); +#endif /* __STDC__ */ + +#define symbol_next(s) ((s)->sy_next) + +/* + * Local Variables: + * comment-column: 0 + * fill-column: 131 + * End: + */ + +/* end of struc-symbol.h */ |