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2005-05-06 Jan Beulich <jbeulich@novell.com> * macro.c (new_formal, del_formal): New. (do_formals): Use new_formal. Check for and parse qualifier. Warn if required argument has default value. Stop looking for more formal when there was a vararg one. (macro_expand_body): Use new_formal and del_formal. (macro_expand): Likewise. Initialize local variable err. Don't return immediately when encountering an error. Warn when keyword argument already had a value assigned. Eliminate duplicate clearing of argument value. When current positional argument matches parameter of vararg type, assign to it all the remaining arguments. Issue error when required parameter does not have value. (free_macro): Use del_formal. (expand_irp): Initialize formal type. Free buffers associated with formal prior to returning. * macro.h (struct formal_struct): Add new field 'type' with new enumeration type 'formal_type'. * doc/as.texinfo: Document macro parameter qualifiers. * NEWS: Mention new functionality. gas/testsuite/ 2005-05-06 Jan Beulich <jbeulich@novell.com> * gas/macros/badarg.s: Add check for bad qualifier specification. * gas/macros/badarg.l: Adjust. * gas/macros/vararg.[sd]: New. * gas/macros/macros.exp: Run new test.
98 lines
3.2 KiB
C
98 lines
3.2 KiB
C
/* macro.h - header file for macro support for gas
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Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2002, 2003, 2004
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Free Software Foundation, Inc.
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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 2, 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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#include "ansidecl.h"
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#include "sb.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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/* 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
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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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} 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 *, int (*) (sb *));
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extern void macro_init
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(int, int, int, int (*) (const char *, int, sb *, int *));
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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
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(int, sb *, sb *, int (*) (sb *), 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, int, sb *, sb *, int (*) (sb *));
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#endif
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