| 1 | /* macro.h - header file for macro support for gas
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| 2 | Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2002
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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 | sac@cygnus.com
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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 | {
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| 59 | sb sub; /* Substitution text. */
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| 60 | int formal_count; /* Number of formal args. */
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| 61 | formal_entry *formals; /* Pointer to list of formal_structs. */
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| 62 | struct hash_control *formal_hash; /* Hash table of formals. */
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| 63 | } macro_entry;
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| 64 |
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| 65 | /* Whether any macros have been defined. */
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| 66 |
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| 67 | extern int macro_defined;
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| 68 |
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| 69 | /* The macro nesting level. */
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| 70 |
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| 71 | extern int macro_nest;
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| 72 |
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| 73 | extern int buffer_and_nest
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| 74 | PARAMS ((const char *, const char *, sb *, int (*) PARAMS ((sb *))));
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| 75 | extern void macro_init
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| 76 | PARAMS ((int, int, int, int (*) PARAMS ((const char *, int, sb *, int *))));
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| 77 | extern void macro_mri_mode
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| 78 | PARAMS ((int));
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| 79 | extern const char *define_macro
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| 80 | PARAMS ((int, sb *, sb *, int (*) PARAMS ((sb *)), const char **));
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| 81 | extern int check_macro
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| 82 | PARAMS ((const char *, sb *, const char **, macro_entry **));
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| 83 | extern void delete_macro
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| 84 | PARAMS ((const char *));
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| 85 | extern const char *expand_irp
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| 86 | PARAMS ((int, int, sb *, sb *, int (*) PARAMS ((sb *))));
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| 87 |
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| 88 | #endif
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