162 lines
3.9 KiB
Plaintext
162 lines
3.9 KiB
Plaintext
%{
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/*
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* Sub-parser for macro invocation in the Aic7xxx SCSI
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* Host adapter sequencer assembler.
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*
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* Copyright (c) 2001 Adaptec Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_macro_gram.y#5 $
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <inttypes.h>
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#include <regex.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include "../queue.h"
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#include "aicasm.h"
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#include "aicasm_symbol.h"
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#include "aicasm_insformat.h"
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static symbol_t *macro_symbol;
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static void add_macro_arg(const char *argtext, int position);
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void mmerror(const char *string);
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%}
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%union {
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int value;
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char *str;
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symbol_t *sym;
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}
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%token <str> T_ARG
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%token <sym> T_SYMBOL
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%type <value> macro_arglist
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%%
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macrocall:
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T_SYMBOL '('
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{
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macro_symbol = $1;
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}
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macro_arglist ')'
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{
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if (macro_symbol->info.macroinfo->narg != $4) {
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printf("Narg == %d", macro_symbol->info.macroinfo->narg);
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stop("Too few arguments for macro invocation",
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EX_DATAERR);
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/* NOTREACHED */
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}
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macro_symbol = NULL;
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YYACCEPT;
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}
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;
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macro_arglist:
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{
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/* Macros can take 0 arguments */
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$$ = 0;
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}
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| T_ARG
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{
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$$ = 1;
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add_macro_arg($1, 1);
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}
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| macro_arglist ',' T_ARG
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{
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if ($1 == 0) {
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stop("Comma without preceding argument in arg list",
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EX_DATAERR);
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/* NOTREACHED */
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}
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$$ = $1 + 1;
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add_macro_arg($3, $$);
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}
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;
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%%
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static void
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add_macro_arg(const char *argtext, int argnum)
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{
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struct macro_arg *marg;
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int i;
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if (macro_symbol == NULL || macro_symbol->type != MACRO) {
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stop("Invalid current symbol for adding macro arg",
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EX_SOFTWARE);
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/* NOTREACHED */
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}
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/*
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* Macro Invocation. Find the appropriate argument and fill
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* in the replace ment text for this call.
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*/
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i = 0;
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STAILQ_FOREACH(marg, ¯o_symbol->info.macroinfo->args, links) {
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i++;
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if (i == argnum)
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break;
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}
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if (marg == NULL) {
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stop("Too many arguments for macro invocation", EX_DATAERR);
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/* NOTREACHED */
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}
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marg->replacement_text = strdup(argtext);
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if (marg->replacement_text == NULL) {
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stop("Unable to replicate replacement text", EX_SOFTWARE);
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/* NOTREACHED */
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}
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}
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void
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mmerror(const char *string)
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{
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stop(string, EX_DATAERR);
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}
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