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-rw-r--r--binutils-2.24/gas/struc-symbol.h159
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diff --git a/binutils-2.24/gas/struc-symbol.h b/binutils-2.24/gas/struc-symbol.h
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-/* struct_symbol.h - Internal symbol structure
- Copyright 1987, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2005,
- 2007, 2008, 2009 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 3, 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, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
-
-#ifndef __struc_symbol_h__
-#define __struc_symbol_h__
-
-struct symbol_flags
-{
- /* Wether the symbol is a local_symbol. */
- unsigned int sy_local_symbol : 1;
-
- /* Wether symbol has been written. */
- unsigned int sy_written : 1;
-
- /* Whether symbol value has been completely resolved (used during
- final pass over symbol table). */
- unsigned int sy_resolved : 1;
-
- /* Whether the symbol value is currently being resolved (used to
- detect loops in symbol dependencies). */
- unsigned int sy_resolving : 1;
-
- /* Whether the symbol value is used in a reloc. This is used to
- ensure that symbols used in relocs are written out, even if they
- are local and would otherwise not be. */
- unsigned int sy_used_in_reloc : 1;
-
- /* Whether the symbol is used as an operand or in an expression.
- NOTE: Not all the backends keep this information accurate;
- backends which use this bit are responsible for setting it when
- a symbol is used in backend routines. */
- unsigned int sy_used : 1;
-
- /* Whether the symbol can be re-defined. */
- unsigned int sy_volatile : 1;
-
- /* Whether the symbol is a forward reference. */
- unsigned int sy_forward_ref : 1;
-
- /* This is set if the symbol is defined in an MRI common section.
- We handle such sections as single common symbols, so symbols
- defined within them must be treated specially by the relocation
- routines. */
- unsigned int sy_mri_common : 1;
-
- /* This is set if the symbol is set with a .weakref directive. */
- unsigned int sy_weakrefr : 1;
-
- /* This is set when the symbol is referenced as part of a .weakref
- directive, but only if the symbol was not in the symbol table
- before. It is cleared as soon as any direct reference to the
- symbol is present. */
- unsigned int sy_weakrefd : 1;
-};
-
-/* The information we keep for a symbol. Note that the symbol table
- holds pointers both to this and to local_symbol structures. See
- below. */
-
-struct symbol
-{
- /* Symbol flags. */
- struct symbol_flags sy_flags;
-
- /* BFD symbol */
- asymbol *bsym;
-
- /* The value of the symbol. */
- expressionS sy_value;
-
- /* Forwards and (optionally) backwards chain pointers. */
- struct symbol *sy_next;
- struct symbol *sy_previous;
-
- /* Pointer to the frag this symbol is attached to, if any.
- Otherwise, NULL. */
- struct frag *sy_frag;
-
-#ifdef OBJ_SYMFIELD_TYPE
- OBJ_SYMFIELD_TYPE sy_obj;
-#endif
-
-#ifdef TC_SYMFIELD_TYPE
- TC_SYMFIELD_TYPE sy_tc;
-#endif
-
-#ifdef TARGET_SYMBOL_FIELDS
- TARGET_SYMBOL_FIELDS
-#endif
-};
-
-/* A pointer in the symbol may point to either a complete symbol
- (struct symbol above) or to a local symbol (struct local_symbol
- defined here). The symbol code can detect the case by examining
- the first field. It is always NULL for a local symbol.
-
- We do this because we ordinarily only need a small amount of
- information for a local symbol. The symbol table takes up a lot of
- space, and storing less information for a local symbol can make a
- big difference in assembler memory usage when assembling a large
- file. */
-
-struct local_symbol
-{
- /* Symbol flags. Only sy_local_symbol and sy_resolved are relevant. */
- struct symbol_flags lsy_flags;
-
- /* The symbol section. This also serves as a flag. If this is
- reg_section, then this symbol has been converted into a regular
- symbol, and lsy_sym points to it. */
- segT lsy_section;
-
- /* The symbol name. */
- const char *lsy_name;
-
- /* The symbol frag or the real symbol, depending upon the value in
- lsy_section. */
- union
- {
- fragS *lsy_frag;
- symbolS *lsy_sym;
- } u;
-
- /* The value of the symbol. */
- valueT lsy_value;
-
-#ifdef TC_LOCAL_SYMFIELD_TYPE
- TC_LOCAL_SYMFIELD_TYPE lsy_tc;
-#endif
-};
-
-#define local_symbol_converted_p(l) ((l)->lsy_section == reg_section)
-#define local_symbol_mark_converted(l) ((l)->lsy_section = reg_section)
-#define local_symbol_resolved_p(l) ((l)->lsy_flags.sy_resolved)
-#define local_symbol_mark_resolved(l) ((l)->lsy_flags.sy_resolved = 1)
-#define local_symbol_get_frag(l) ((l)->u.lsy_frag)
-#define local_symbol_set_frag(l, f) ((l)->u.lsy_frag = (f))
-#define local_symbol_get_real_symbol(l) ((l)->u.lsy_sym)
-#define local_symbol_set_real_symbol(l, s) ((l)->u.lsy_sym = (s))
-
-#endif /* __struc_symbol_h__ */