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