Annotation of sys/dev/microcode/aic7xxx/aicasm_macro_gram.y, Revision 1.1
1.1 ! nbrk 1: %{
! 2: /* $OpenBSD: aicasm_macro_gram.y,v 1.3 2006/12/23 21:08:01 krw Exp $ */
! 3: /* $NetBSD: aicasm_macro_gram.y,v 1.1 2003/04/19 19:26:11 fvdl Exp $ */
! 4:
! 5: /*
! 6: * Sub-parser for macro invocation in the Aic7xxx SCSI
! 7: * Host adapter sequencer assembler.
! 8: *
! 9: * Copyright (c) 2001 Adaptec Inc.
! 10: * All rights reserved.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions, and the following disclaimer,
! 17: * without modification.
! 18: * 2. Redistributions in binary form must reproduce at minimum a disclaimer
! 19: * substantially similar to the "NO WARRANTY" disclaimer below
! 20: * ("Disclaimer") and any redistribution must be conditioned upon
! 21: * including a substantially similar Disclaimer requirement for further
! 22: * binary redistribution.
! 23: * 3. Neither the names of the above-listed copyright holders nor the names
! 24: * of any contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * Alternatively, this software may be distributed under the terms of the
! 28: * GNU General Public License ("GPL") version 2 as published by the Free
! 29: * Software Foundation.
! 30: *
! 31: * NO WARRANTY
! 32: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! 33: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
! 34: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
! 35: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
! 36: * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 37: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 38: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 39: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 40: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
! 41: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 42: * POSSIBILITY OF SUCH DAMAGES.
! 43: *
! 44: * $FreeBSD: src/sys/dev/aic7xxx/aicasm/aicasm_macro_gram.y,v 1.2 2002/08/31 06:39:40 gibbs Exp $
! 45: */
! 46:
! 47: #include <sys/types.h>
! 48:
! 49: #include <inttypes.h>
! 50: #include <regex.h>
! 51: #include <stdio.h>
! 52: #include <stdlib.h>
! 53: #include <string.h>
! 54: #include <sysexits.h>
! 55:
! 56: #ifdef __linux__
! 57: #include "../queue.h"
! 58: #else
! 59: #include <sys/queue.h>
! 60: #endif
! 61:
! 62: #include "aicasm.h"
! 63: #include "aicasm_symbol.h"
! 64: #include "aicasm_insformat.h"
! 65:
! 66: static symbol_t *macro_symbol;
! 67:
! 68: static void add_macro_arg(const char *argtext, int position);
! 69:
! 70: %}
! 71:
! 72: %union {
! 73: int value;
! 74: char *str;
! 75: symbol_t *sym;
! 76: }
! 77:
! 78:
! 79: %token <str> T_ARG
! 80:
! 81: %token <sym> T_SYMBOL
! 82:
! 83: %type <value> macro_arglist
! 84:
! 85: %%
! 86:
! 87: macrocall:
! 88: T_SYMBOL '('
! 89: {
! 90: macro_symbol = $1;
! 91: }
! 92: macro_arglist ')'
! 93: {
! 94: if (macro_symbol->info.macroinfo->narg != $4) {
! 95: printf("Narg == %d", macro_symbol->info.macroinfo->narg);
! 96: stop("Too few arguments for macro invocation",
! 97: EX_DATAERR);
! 98: /* NOTREACHED */
! 99: }
! 100: macro_symbol = NULL;
! 101: YYACCEPT;
! 102: }
! 103: ;
! 104:
! 105: macro_arglist:
! 106: {
! 107: /* Macros can take 0 arguments */
! 108: $$ = 0;
! 109: }
! 110: | T_ARG
! 111: {
! 112: $$ = 1;
! 113: add_macro_arg($1, 1);
! 114: }
! 115: | macro_arglist ',' T_ARG
! 116: {
! 117: if ($1 == 0) {
! 118: stop("Comma without preceding argument in arg list",
! 119: EX_DATAERR);
! 120: /* NOTREACHED */
! 121: }
! 122: $$ = $1 + 1;
! 123: add_macro_arg($3, $$);
! 124: }
! 125: ;
! 126:
! 127: %%
! 128:
! 129: static void
! 130: add_macro_arg(const char *argtext, int argnum)
! 131: {
! 132: struct macro_arg *marg;
! 133: int i;
! 134:
! 135: if (macro_symbol == NULL || macro_symbol->type != MACRO) {
! 136: stop("Invalid current symbol for adding macro arg",
! 137: EX_SOFTWARE);
! 138: /* NOTREACHED */
! 139: }
! 140: /*
! 141: * Macro Invocation. Find the appropriate argument and fill
! 142: * in the replace ment text for this call.
! 143: */
! 144: i = 0;
! 145: TAILQ_FOREACH(marg, ¯o_symbol->info.macroinfo->args, links) {
! 146: i++;
! 147: if (i == argnum)
! 148: break;
! 149: }
! 150: if (marg == NULL) {
! 151: stop("Too many arguments for macro invocation", EX_DATAERR);
! 152: /* NOTREACHED */
! 153: }
! 154: marg->replacement_text = strdup(argtext);
! 155: if (marg->replacement_text == NULL) {
! 156: stop("Unable to replicate replacement text", EX_SOFTWARE);
! 157: /* NOTREACHED */
! 158: }
! 159: }
! 160:
! 161: void
! 162: mmerror(const char *string)
! 163: {
! 164: stop(string, EX_DATAERR);
! 165: }
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