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 55 #ifdef __linux__ 56 #include "../queue.h" 57 #else 58 #include <sys/queue.h> 59 #endif 60 61 #include "aicasm.h" 62 #include "aicasm_symbol.h" 63 #include "aicasm_insformat.h" 64 65 static symbol_t *macro_symbol; 66 67 static void add_macro_arg(const char *argtext, int position); 68 void mmerror(const char *string); 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 STAILQ_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 } 166