Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | %{ |
| 2 | /* |
| 3 | * Sub-Lexical Analyzer for macro invokation in |
| 4 | * the Aic7xxx SCSI 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_scan.l#8 $ |
| 42 | * |
| 43 | * $FreeBSD$ |
| 44 | */ |
| 45 | |
| 46 | #include <sys/types.h> |
| 47 | |
| 48 | #include <inttypes.h> |
| 49 | #include <limits.h> |
| 50 | #include <regex.h> |
| 51 | #include <stdio.h> |
| 52 | #include <string.h> |
| 53 | #include <sysexits.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include "../queue.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | #include "aicasm.h" |
| 57 | #include "aicasm_symbol.h" |
| 58 | #include "aicasm_macro_gram.h" |
| 59 | |
| 60 | #define MAX_STR_CONST 4096 |
| 61 | static char string_buf[MAX_STR_CONST]; |
| 62 | static char *string_buf_ptr; |
| 63 | static int parren_count; |
| 64 | static char buf[255]; |
Hannes Reinecke | fc2adcf | 2007-10-19 10:32:34 +0200 | [diff] [blame] | 65 | int mmlineno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | %} |
| 67 | |
| 68 | WORD [A-Za-z_][-A-Za-z_0-9]* |
| 69 | SPACE [ \t]+ |
| 70 | MCARG [^(), \t]+ |
| 71 | |
| 72 | %x ARGLIST |
| 73 | |
| 74 | %% |
| 75 | \n { |
Hannes Reinecke | fc2adcf | 2007-10-19 10:32:34 +0200 | [diff] [blame] | 76 | ++mmlineno; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | } |
| 78 | \r ; |
| 79 | <ARGLIST>{SPACE} ; |
| 80 | <ARGLIST>\( { |
| 81 | parren_count++; |
| 82 | if (parren_count == 1) { |
| 83 | string_buf_ptr = string_buf; |
| 84 | return ('('); |
| 85 | } |
| 86 | *string_buf_ptr++ = '('; |
| 87 | } |
| 88 | <ARGLIST>\) { |
| 89 | if (parren_count == 1) { |
| 90 | if (string_buf_ptr != string_buf) { |
| 91 | /* |
| 92 | * Return an argument and |
| 93 | * rescan this parren so we |
| 94 | * can return it as well. |
| 95 | */ |
| 96 | *string_buf_ptr = '\0'; |
| 97 | mmlval.str = string_buf; |
| 98 | string_buf_ptr = string_buf; |
| 99 | unput(')'); |
| 100 | return T_ARG; |
| 101 | } |
| 102 | BEGIN INITIAL; |
| 103 | return (')'); |
| 104 | } |
| 105 | parren_count--; |
| 106 | *string_buf_ptr++ = ')'; |
| 107 | } |
| 108 | <ARGLIST>{MCARG} { |
| 109 | char *yptr; |
| 110 | |
| 111 | yptr = mmtext; |
| 112 | while (*yptr) |
| 113 | *string_buf_ptr++ = *yptr++; |
| 114 | } |
| 115 | <ARGLIST>\, { |
| 116 | if (string_buf_ptr != string_buf) { |
| 117 | /* |
| 118 | * Return an argument and |
| 119 | * rescan this comma so we |
| 120 | * can return it as well. |
| 121 | */ |
| 122 | *string_buf_ptr = '\0'; |
| 123 | mmlval.str = string_buf; |
| 124 | string_buf_ptr = string_buf; |
| 125 | unput(','); |
| 126 | return T_ARG; |
| 127 | } |
| 128 | return ','; |
| 129 | } |
| 130 | {WORD}[(] { |
| 131 | /* May be a symbol or a macro invocation. */ |
| 132 | mmlval.sym = symtable_get(mmtext); |
| 133 | if (mmlval.sym->type != MACRO) { |
| 134 | stop("Expecting Macro Name", |
| 135 | EX_DATAERR); |
| 136 | } |
| 137 | unput('('); |
| 138 | parren_count = 0; |
| 139 | BEGIN ARGLIST; |
| 140 | return T_SYMBOL; |
| 141 | } |
| 142 | . { |
| 143 | snprintf(buf, sizeof(buf), "Invalid character " |
| 144 | "'%c'", mmtext[0]); |
| 145 | stop(buf, EX_DATAERR); |
| 146 | } |
| 147 | %% |
| 148 | |
| 149 | int |
| 150 | mmwrap() |
| 151 | { |
| 152 | stop("EOF encountered in macro call", EX_DATAERR); |
| 153 | } |