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c026360c75
This tidies memory allocated for entries in macro_hash. Freeing the macro name requires a little restructuring of the define_macro interface due to the name being used in the error message, and exposed the fact that the name and other fields were not initialised by the iq2000 backend. There is also a fix for .macro .macro .endm .macro .macro .endm which prior to this patch reported mac.s:1: Warning: attempt to redefine pseudo-op `.macro' ignored mac.s:3: Error: Macro `.macro' was already defined rather than reporting the attempt to redefine twice. * macro.c (macro_del_f): New function. (macro_init): Use it when creating macro_hash. (free_macro): Free macro name too. (define_macro): Return the macro_entry, remove idx, file, line and namep params. Call as_where. Report errors here. Delete macro from macro_hash on attempt to redefined pseudo-op. (delete_macro): Don't call free_macro. * macro.h (define_macro): Update prototype. * read.c (s_macro): Adjust to suit. * config/tc-iq2000.c (iq2000_add_macro): Init all fields of macro_entry.
97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/* macro.h - header file for macro support for gas
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Copyright (C) 1994-2023 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 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; /* List of formal_structs. */
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htab_t formal_hash; /* Hash table of formals. */
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const char *name; /* Macro name. */
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const 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 htab_t 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_end (void);
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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 macro_entry *define_macro (sb *, sb *, size_t (*) (sb *));
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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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