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- /* struct_symbol.h - Internal symbol structure
- Copyright (C) 1987, 1992 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 2, 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.
-
- oYou 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. */
-
- #ifndef __struc_symbol_h__
- #define __struc_symbol_h__
-
- #ifdef BFD_ASSEMBLER
- /* The BFD code wants to walk the list in both directions. */
- #undef SYMBOLS_NEED_BACKPOINTERS
- #define SYMBOLS_NEED_BACKPOINTERS
- #endif
-
- /* our version of an nlist node */
- struct symbol
- {
- #ifndef BFD_ASSEMBLER
- /* The (4-origin) position of sy_name in the symbol table of the object
- file. This will be 0 for (nameless) .stabd symbols.
-
- Not used until write_object_file() time. */
- unsigned long sy_name_offset;
-
- /* What we write in .o file (if permitted). */
- obj_symbol_type sy_symbol;
-
- /* The 24 bit symbol number. Symbol numbers start at 0 and are unsigned. */
- long sy_number;
- #else
- /* BFD symbol */
- asymbol *bsym;
- #endif
-
- 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 */
-
- int written : 1;
-
- #ifdef TARGET_SYMBOL_FIELDS
- TARGET_SYMBOL_FIELDS
- #endif
- };
-
- 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
-
- void symbol_clear_list_pointers PARAMS ((symbolS * symbolP));
- void symbol_insert PARAMS ((symbolS * addme, symbolS * target,
- symbolS ** rootP, symbolS ** lastP));
- void symbol_remove PARAMS ((symbolS * symbolP, symbolS ** rootP,
- symbolS ** lastP));
- void verify_symbol_chain PARAMS ((symbolS * rootP, symbolS * lastP));
-
- #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 */
-
- void symbol_append PARAMS ((symbolS * addme, symbolS * target,
- symbolS ** rootP, symbolS ** lastP));
-
- #define symbol_next(s) ((s)->sy_next)
-
- #endif /* __struc_symbol_h__ */
-
- /* end of struc-symbol.h */
-