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