2014-12-06 09:41:27 +01:00
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/* macro.h - header file for macro support for gas
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2016-03-12 04:07:23 +01:00
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Copyright (C) 1994-2015 Free Software Foundation, Inc.
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2014-12-06 09:41:27 +01:00
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Written by Steve and Judy Chamberlain of Cygnus Support,
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sac@cygnus.com
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#ifndef MACRO_H
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#define MACRO_H
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/* Structures used to store macros.
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Each macro knows its name and included text. It gets built with a
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list of formal arguments, and also keeps a hash table which points
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into the list to speed up formal search. Each formal knows its
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name and its default value. Each time the macro is expanded, the
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formals get the actual values attached to them. */
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enum formal_type
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{
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FORMAL_OPTIONAL,
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FORMAL_REQUIRED,
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FORMAL_VARARG
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};
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/* Describe the formal arguments to a macro. */
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typedef struct formal_struct {
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struct formal_struct *next; /* Next formal in list. */
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sb name; /* Name of the formal. */
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sb def; /* The default value. */
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sb actual; /* The actual argument (changed on each expansion). */
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int index; /* The index of the formal 0..formal_count - 1. */
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enum formal_type type; /* The kind of the formal. */
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} formal_entry;
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/* Other values found in the index field of a formal_entry. */
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#define QUAL_INDEX (-1)
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#define NARG_INDEX (-2)
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#define LOCAL_INDEX (-3)
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/* Describe the macro. */
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typedef struct macro_struct
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{
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sb sub; /* Substitution text. */
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int formal_count; /* Number of formal args. */
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formal_entry *formals; /* Pointer to list of formal_structs. */
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struct hash_control *formal_hash; /* Hash table of formals. */
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const char *name; /* Macro name. */
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char *file; /* File the macro was defined in. */
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unsigned int line; /* Line number of definition. */
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} macro_entry;
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/* Whether any macros have been defined. */
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extern int macro_defined;
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/* The macro nesting level. */
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extern int macro_nest;
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/* The macro hash table. */
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extern struct hash_control *macro_hash;
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extern int buffer_and_nest (const char *, const char *, sb *,
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size_t (*) (sb *));
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extern void macro_init (int, int, int,
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size_t (*) (const char *, size_t, sb *, offsetT *));
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extern void macro_set_alternate (int);
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extern void macro_mri_mode (int);
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extern const char *define_macro (size_t, sb *, sb *, size_t (*) (sb *),
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char *, unsigned int, const char **);
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extern int check_macro (const char *, sb *, const char **, macro_entry **);
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extern void delete_macro (const char *);
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extern const char *expand_irp (int, size_t, sb *, sb *, size_t (*) (sb *));
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#endif
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