| [10] | 1 | /* macro.h - header file for macro support for gas and gasp
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| 2 | Copyright 1994, 1995, 1996, 1997, 1998, 2000
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| 3 | Free Software Foundation, Inc.
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| 4 |
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| 5 | Written by Steve and Judy Chamberlain of Cygnus Support,
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| 6 | [email protected]
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| 7 |
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| 8 | This file is part of GAS, the GNU Assembler.
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| 9 |
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| 10 | GAS is free software; you can redistribute it and/or modify
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| 11 | it under the terms of the GNU General Public License as published by
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| 12 | the Free Software Foundation; either version 2, or (at your option)
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| 13 | any later version.
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| 14 |
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| 15 | GAS is distributed in the hope that it will be useful,
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| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | GNU General Public License for more details.
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| 19 |
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| 20 | You should have received a copy of the GNU General Public License
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| 21 | along with GAS; see the file COPYING. If not, write to the Free
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| 22 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 23 | 02111-1307, USA. */
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| 24 |
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| 25 | #ifndef MACRO_H
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| 26 |
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| 27 | #define MACRO_H
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| 28 |
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| 29 | #include "ansidecl.h"
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| 30 | #include "sb.h"
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| 31 |
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| 32 | /* Structures used to store macros.
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| 33 |
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| 34 | Each macro knows its name and included text. It gets built with a
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| 35 | list of formal arguments, and also keeps a hash table which points
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| 36 | into the list to speed up formal search. Each formal knows its
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| 37 | name and its default value. Each time the macro is expanded, the
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| 38 | formals get the actual values attatched to them. */
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| 39 |
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| 40 | /* describe the formal arguments to a macro */
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| 41 |
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| 42 | typedef struct formal_struct {
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| 43 | struct formal_struct *next; /* next formal in list */
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| 44 | sb name; /* name of the formal */
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| 45 | sb def; /* the default value */
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| 46 | sb actual; /* the actual argument (changed on each expansion) */
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| 47 | int index; /* the index of the formal 0..formal_count-1 */
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| 48 | } formal_entry;
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| 49 |
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| 50 | /* Other values found in the index field of a formal_entry. */
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| 51 | #define QUAL_INDEX (-1)
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| 52 | #define NARG_INDEX (-2)
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| 53 | #define LOCAL_INDEX (-3)
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| 54 |
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| 55 | /* describe the macro. */
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| 56 |
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| 57 | typedef struct macro_struct {
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| 58 | sb sub; /* substitution text. */
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| 59 | int formal_count; /* number of formal args. */
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| 60 | formal_entry *formals; /* pointer to list of formal_structs */
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| 61 | struct hash_control *formal_hash; /* hash table of formals. */
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| 62 | } macro_entry;
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| 63 |
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| 64 | /* Whether any macros have been defined. */
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| 65 |
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| 66 | extern int macro_defined;
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| 67 |
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