Staging: strip: delete the driver
[linux/fpc-iii.git] / drivers / scsi / aic7xxx / aicasm / aicasm_scan.l
blob93c8667cd704dd0af10d85a32e2806422ccecfce
1 %{
2 /*
3  * Lexical Analyzer for the Aic7xxx SCSI Host adapter sequencer assembler.
4  *
5  * Copyright (c) 1997, 1998, 2000 Justin T. Gibbs.
6  * Copyright (c) 2001, 2002 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_scan.l#20 $
42  *
43  * $FreeBSD$
44  */
46 #include <sys/types.h>
48 #include <inttypes.h>
49 #include <limits.h>
50 #include <regex.h>
51 #include <stdio.h>
52 #include <string.h>
53 #include <sysexits.h>
54 #ifdef __linux__
55 #include "../queue.h"
56 #else
57 #include <sys/queue.h>
58 #endif
60 #include "aicasm.h"
61 #include "aicasm_symbol.h"
62 #include "aicasm_gram.h"
64 /* This is used for macro body capture too, so err on the large size. */
65 #define MAX_STR_CONST 4096
66 static char string_buf[MAX_STR_CONST];
67 static char *string_buf_ptr;
68 static int  parren_count;
69 static int  quote_count;
70 static char buf[255];
73 PATH            ([/]*[-A-Za-z0-9_.])+
74 WORD            [A-Za-z_][-A-Za-z_0-9]*
75 SPACE           [ \t]+
76 MCARG           [^(), \t]+
77 MBODY           ((\\[^\n])*[^\n\\]*)+
79 %x COMMENT
80 %x CEXPR
81 %x INCLUDE
82 %x STRING
83 %x MACRODEF
84 %x MACROARGLIST
85 %x MACROCALLARGS
86 %x MACROBODY
89 \n                      { ++yylineno; }
90 \r                      ;
91 "/*"                    { BEGIN COMMENT;  /* Enter comment eating state */ }
92 <COMMENT>"/*"           { fprintf(stderr, "Warning! Comment within comment."); }
93 <COMMENT>\n             { ++yylineno; }
94 <COMMENT>[^*/\n]*       ;
95 <COMMENT>"*"+[^*/\n]*   ;
96 <COMMENT>"/"+[^*/\n]*   ;
97 <COMMENT>"*"+"/"        { BEGIN INITIAL; }
98 if[ \t]*\(              {
99                                 string_buf_ptr = string_buf;
100                                 parren_count = 1;
101                                 BEGIN CEXPR;
102                                 return T_IF;
103                         }
104 <CEXPR>\(               {       *string_buf_ptr++ = '('; parren_count++; }
105 <CEXPR>\)               {
106                                 parren_count--;
107                                 if (parren_count == 0) {
108                                         /* All done */
109                                         BEGIN INITIAL;
110                                         *string_buf_ptr = '\0';
111                                         yylval.sym = symtable_get(string_buf);
112                                         return T_CEXPR;
113                                 } else {
114                                         *string_buf_ptr++ = ')';
115                                 }
116                         }
117 <CEXPR>\n               { ++yylineno; }
118 <CEXPR>\r               ;
119 <CEXPR>[^()\n]+ {
120                                 char *yptr;
122                                 yptr = yytext;
123                                 while (*yptr != '\0') {
124                                         /* Remove duplicate spaces */
125                                         if (*yptr == '\t')
126                                                 *yptr = ' ';
127                                         if (*yptr == ' '
128                                          && string_buf_ptr != string_buf
129                                          && string_buf_ptr[-1] == ' ')
130                                                 yptr++;
131                                         else 
132                                                 *string_buf_ptr++ = *yptr++;
133                                 }
134                         }
135 else                    { return T_ELSE; }
136 VERSION                 { return T_VERSION; }
137 PREFIX                  { return T_PREFIX; }
138 PATCH_ARG_LIST          { return T_PATCH_ARG_LIST; }
139 \"                      {
140                                 string_buf_ptr = string_buf;
141                                 BEGIN STRING;
142                         }
143 <STRING>[^"]+           {
144                                 char *yptr;
146                                 yptr = yytext;
147                                 while (*yptr)
148                                         *string_buf_ptr++ = *yptr++;
149                         }
150 <STRING>\"              {
151                                 /* All done */
152                                 BEGIN INITIAL;
153                                 *string_buf_ptr = '\0';
154                                 yylval.str = string_buf;
155                                 return T_STRING;
156                         }
157 {SPACE}                  ;
159         /* Register/SCB/SRAM definition keywords */
160 export                  { return T_EXPORT; }
161 register                { return T_REGISTER; }
162 const                   { yylval.value = FALSE; return T_CONST; }
163 download                { return T_DOWNLOAD; }
164 address                 { return T_ADDRESS; }
165 count                   { return T_COUNT; }
166 access_mode             { return T_ACCESS_MODE; }
167 dont_generate_debug_code { return T_DONT_GENERATE_DEBUG_CODE; }
168 modes                   { return T_MODES; }
169 RW|RO|WO                {
170                                  if (strcmp(yytext, "RW") == 0)
171                                         yylval.value = RW;
172                                  else if (strcmp(yytext, "RO") == 0)
173                                         yylval.value = RO;
174                                  else
175                                         yylval.value = WO;
176                                  return T_MODE;
177                         }
178 field                   { return T_FIELD; }
179 enum                    { return T_ENUM; }
180 mask                    { return T_MASK; }
181 alias                   { return T_ALIAS; }
182 size                    { return T_SIZE; }
183 scb                     { return T_SCB; }
184 scratch_ram             { return T_SRAM; }
185 accumulator             { return T_ACCUM; }
186 mode_pointer            { return T_MODE_PTR; }
187 allones                 { return T_ALLONES; }
188 allzeros                { return T_ALLZEROS; }
189 none                    { return T_NONE; }
190 sindex                  { return T_SINDEX; }
191 A                       { return T_A; }
193         /* Instruction Formatting */
194 PAD_PAGE                { return T_PAD_PAGE; }
195 BEGIN_CRITICAL          { return T_BEGIN_CS; }
196 END_CRITICAL            { return T_END_CS; }
197 SET_SRC_MODE            { return T_SET_SRC_MODE; }
198 SET_DST_MODE            { return T_SET_DST_MODE; }
200         /* Opcodes */
201 shl                     { return T_SHL; }
202 shr                     { return T_SHR; }
203 ror                     { return T_ROR; }
204 rol                     { return T_ROL; }
205 mvi                     { return T_MVI; }
206 mov                     { return T_MOV; }
207 clr                     { return T_CLR; }
208 jmp                     { return T_JMP; }
209 jc                      { return T_JC;  }
210 jnc                     { return T_JNC; }
211 je                      { return T_JE;  }
212 jne                     { return T_JNE; }
213 jz                      { return T_JZ;  }
214 jnz                     { return T_JNZ; }
215 call                    { return T_CALL; }
216 add                     { return T_ADD; }
217 adc                     { return T_ADC; }
218 bmov                    { return T_BMOV; }
219 inc                     { return T_INC; }
220 dec                     { return T_DEC; }
221 stc                     { return T_STC; }
222 clc                     { return T_CLC; }
223 cmp                     { return T_CMP; }
224 not                     { return T_NOT; }
225 xor                     { return T_XOR; }
226 test                    { return T_TEST;}
227 and                     { return T_AND; }
228 or                      { return T_OR;  }
229 ret                     { return T_RET; }
230 nop                     { return T_NOP; }
232         /* ARP2 16bit extensions */
233         /* or16                 { return T_OR16; } */
234         /* and16                        { return T_AND16; }*/
235         /* xor16                        { return T_XOR16; }*/
236         /* add16                        { return T_ADD16; }*/
237         /* adc16                        { return T_ADC16; }*/
238         /* mvi16                        { return T_MVI16; }*/
239         /* test16                       { return T_TEST16; }*/
240         /* cmp16                        { return T_CMP16; }*/
241         /* cmpxchg                      { return T_CMPXCHG; }*/
243         /* Allowed Symbols */
244 \<\<                    { return T_EXPR_LSHIFT; }
245 \>\>                    { return T_EXPR_RSHIFT; }
246 [-+,:()~|&."{};<>[\]/*!=] { return yytext[0]; }
248         /* Number processing */
249 0[0-7]*                 {
250                                 yylval.value = strtol(yytext, NULL, 8);
251                                 return T_NUMBER;
252                         }
254 0[xX][0-9a-fA-F]+       {
255                                 yylval.value = strtoul(yytext + 2, NULL, 16);
256                                 return T_NUMBER;
257                         }
259 [1-9][0-9]*             {
260                                 yylval.value = strtol(yytext, NULL, 10);
261                                 return T_NUMBER;
262                         }
263         /* Include Files */
264 #include{SPACE}         {
265                                 BEGIN INCLUDE;
266                                 quote_count = 0;
267                                 return T_INCLUDE;
268                         }
269 <INCLUDE>[<]            { return yytext[0]; }
270 <INCLUDE>[>]            { BEGIN INITIAL; return yytext[0]; }
271 <INCLUDE>[\"]           {
272                                 if (quote_count != 0)
273                                         BEGIN INITIAL;
274                                 quote_count++;
275                                 return yytext[0];
276                         }
277 <INCLUDE>{PATH}         {
278                                 char *yptr;
280                                 yptr = yytext;
281                                 string_buf_ptr = string_buf;
282                                 while (*yptr)
283                                         *string_buf_ptr++ = *yptr++;
284                                 yylval.str = string_buf;
285                                 *string_buf_ptr = '\0';
286                                 return T_PATH;
287                         }
288 <INCLUDE>.              { stop("Invalid include line", EX_DATAERR); }
289 #define{SPACE}          {
290                                 BEGIN MACRODEF;
291                                 return T_DEFINE;
292                         }
293 <MACRODEF>{WORD}{SPACE} { 
294                                 char *yptr;
296                                 /* Strip space and return as a normal symbol */
297                                 yptr = yytext;
298                                 while (*yptr != ' ' && *yptr != '\t')
299                                         yptr++;
300                                 *yptr = '\0';
301                                 yylval.sym = symtable_get(yytext);
302                                 string_buf_ptr = string_buf;
303                                 BEGIN MACROBODY;
304                                 return T_SYMBOL;
305                         }
306 <MACRODEF>{WORD}\(      {
307                                 /*
308                                  * We store the symbol with its opening
309                                  * parren so we can differentiate macros
310                                  * that take args from macros with the
311                                  * same name that do not take args as
312                                  * is allowed in C.
313                                  */
314                                 BEGIN MACROARGLIST;
315                                 yylval.sym = symtable_get(yytext);
316                                 unput('(');
317                                 return T_SYMBOL;
318                         }
319 <MACROARGLIST>{WORD}    {
320                                 yylval.str = yytext;
321                                 return T_ARG;
322                         }
323 <MACROARGLIST>{SPACE}   ;
324 <MACROARGLIST>[(,]      {
325                                 return yytext[0];
326                         }
327 <MACROARGLIST>[)]       {
328                                 string_buf_ptr = string_buf;
329                                 BEGIN MACROBODY;
330                                 return ')';
331                         }
332 <MACROARGLIST>.         {
333                                 snprintf(buf, sizeof(buf), "Invalid character "
334                                          "'%c' in macro argument list",
335                                          yytext[0]);
336                                 stop(buf, EX_DATAERR);
337                         }
338 <MACROCALLARGS>{SPACE}  ;
339 <MACROCALLARGS>\(       {
340                                 parren_count++;
341                                 if (parren_count == 1)
342                                         return ('(');
343                                 *string_buf_ptr++ = '(';
344                         }
345 <MACROCALLARGS>\)       {
346                                 parren_count--;
347                                 if (parren_count == 0) {
348                                         BEGIN INITIAL;
349                                         return (')');
350                                 }
351                                 *string_buf_ptr++ = ')';
352                         }
353 <MACROCALLARGS>{MCARG}  {
354                                 char *yptr;
356                                 yptr = yytext;
357                                 while (*yptr)
358                                         *string_buf_ptr++ = *yptr++;
359                         }
360 <MACROCALLARGS>\,       {
361                                 if (string_buf_ptr != string_buf) {
362                                         /*
363                                          * Return an argument and
364                                          * rescan this comma so we
365                                          * can return it as well.
366                                          */
367                                         *string_buf_ptr = '\0';
368                                         yylval.str = string_buf;
369                                         string_buf_ptr = string_buf;
370                                         unput(',');
371                                         return T_ARG;
372                                 }
373                                 return ',';
374                         }
375 <MACROBODY>\\\n         {
376                                 /* Eat escaped newlines. */
377                                 ++yylineno;
378                         }
379 <MACROBODY>\r           ;
380 <MACROBODY>\n           {
381                                 /* Macros end on the first unescaped newline. */
382                                 BEGIN INITIAL;
383                                 *string_buf_ptr = '\0';
384                                 yylval.str = string_buf;
385                                 ++yylineno;
386                                 return T_MACROBODY;
387                         }
388 <MACROBODY>{MBODY}      {
389                                 char *yptr;
390                                 char c;
392                                 yptr = yytext;
393                                 while (c = *yptr++) {
394                                         /*
395                                          * Strip carriage returns.
396                                          */
397                                         if (c == '\r')
398                                                 continue;
399                                         *string_buf_ptr++ = c;
400                                 }
401                         }
402 {WORD}\(                {
403                                 char *yptr;
404                                 char *ycopy;
406                                 /* May be a symbol or a macro invocation. */
407                                 yylval.sym = symtable_get(yytext);
408                                 if (yylval.sym->type == MACRO) {
409                                         YY_BUFFER_STATE old_state;
410                                         YY_BUFFER_STATE temp_state;
412                                         ycopy = strdup(yytext);
413                                         yptr = ycopy + yyleng;
414                                         while (yptr > ycopy)
415                                                 unput(*--yptr);
416                                         old_state = YY_CURRENT_BUFFER;
417                                         temp_state =
418                                             yy_create_buffer(stdin,
419                                                              YY_BUF_SIZE);
420                                         yy_switch_to_buffer(temp_state);
421                                         mm_switch_to_buffer(old_state);
422                                         mmparse();
423                                         mm_switch_to_buffer(temp_state);
424                                         yy_switch_to_buffer(old_state);
425                                         mm_delete_buffer(temp_state);
426                                         expand_macro(yylval.sym);
427                                 } else {
428                                         if (yylval.sym->type == UNINITIALIZED) {
429                                                 /* Try without the '(' */
430                                                 symbol_delete(yylval.sym);
431                                                 yytext[yyleng-1] = '\0';
432                                                 yylval.sym =
433                                                     symtable_get(yytext);
434                                         }
435                                         unput('(');
436                                         return T_SYMBOL;
437                                 }
438                         }
439 {WORD}                  {
440                                 yylval.sym = symtable_get(yytext);
441                                 if (yylval.sym->type == MACRO) {
442                                         expand_macro(yylval.sym);
443                                 } else {
444                                         return T_SYMBOL;
445                                 }
446                         }
447 .                       { 
448                                 snprintf(buf, sizeof(buf), "Invalid character "
449                                          "'%c'", yytext[0]);
450                                 stop(buf, EX_DATAERR);
451                         }
454 typedef struct include {
455         YY_BUFFER_STATE  buffer;
456         int              lineno;
457         char            *filename;
458         SLIST_ENTRY(include) links;
459 }include_t;
461 SLIST_HEAD(, include) include_stack;
463 void
464 include_file(char *file_name, include_type type)
466         FILE *newfile;
467         include_t *include;
469         newfile = NULL;
470         /* Try the current directory first */
471         if (includes_search_curdir != 0 || type == SOURCE_FILE)
472                 newfile = fopen(file_name, "r");
474         if (newfile == NULL && type != SOURCE_FILE) {
475                 path_entry_t include_dir;
476                 for (include_dir = search_path.slh_first;
477                      include_dir != NULL;                
478                      include_dir = include_dir->links.sle_next) {
479                         char fullname[PATH_MAX];
481                         if ((include_dir->quoted_includes_only == TRUE)
482                          && (type != QUOTED_INCLUDE))
483                                 continue;
485                         snprintf(fullname, sizeof(fullname),
486                                  "%s/%s", include_dir->directory, file_name);
488                         if ((newfile = fopen(fullname, "r")) != NULL)
489                                 break;
490                 }
491         }
493         if (newfile == NULL) {
494                 perror(file_name);
495                 stop("Unable to open input file", EX_SOFTWARE);
496                 /* NOTREACHED */
497         }
499         if (type != SOURCE_FILE) {
500                 include = (include_t *)malloc(sizeof(include_t));
501                 if (include == NULL) {
502                         stop("Unable to allocate include stack entry",
503                              EX_SOFTWARE);
504                         /* NOTREACHED */
505                 }
506                 include->buffer = YY_CURRENT_BUFFER;
507                 include->lineno = yylineno;
508                 include->filename = yyfilename;
509                 SLIST_INSERT_HEAD(&include_stack, include, links);
510         }
511         yy_switch_to_buffer(yy_create_buffer(newfile, YY_BUF_SIZE));
512         yylineno = 1;
513         yyfilename = strdup(file_name);
516 static void next_substitution(struct symbol *mac_symbol, const char *body_pos,
517                               const char **next_match,
518                               struct macro_arg **match_marg, regmatch_t *match);
520 void
521 expand_macro(struct symbol *macro_symbol)
523         struct macro_arg *marg;
524         struct macro_arg *match_marg;
525         const char *body_head;
526         const char *body_pos;
527         const char *next_match;
529         /*
530          * Due to the nature of unput, we must work
531          * backwards through the macro body performing
532          * any expansions.
533          */
534         body_head = macro_symbol->info.macroinfo->body;
535         body_pos = body_head + strlen(body_head);
536         while (body_pos > body_head) {
537                 regmatch_t match;
539                 next_match = body_head;
540                 match_marg = NULL;
541                 next_substitution(macro_symbol, body_pos, &next_match,
542                                   &match_marg, &match);
544                 /* Put back everything up until the replacement. */
545                 while (body_pos > next_match)
546                         unput(*--body_pos);
548                 /* Perform the replacement. */
549                 if (match_marg != NULL) {
550                         const char *strp;
552                         next_match = match_marg->replacement_text;
553                         strp = next_match + strlen(next_match);
554                         while (strp > next_match)
555                                 unput(*--strp);
557                         /* Skip past the unexpanded macro arg. */
558                         body_pos -= match.rm_eo - match.rm_so;
559                 }
560         }
562         /* Cleanup replacement text. */
563         STAILQ_FOREACH(marg, &macro_symbol->info.macroinfo->args, links) {
564                 free(marg->replacement_text);
565         }
569  * Find the next substitution in the macro working backwards from
570  * body_pos until the beginning of the macro buffer.  next_match
571  * should be initialized to the beginning of the macro buffer prior
572  * to calling this routine.
573  */
574 static void
575 next_substitution(struct symbol *mac_symbol, const char *body_pos,
576                   const char **next_match, struct macro_arg **match_marg,
577                   regmatch_t *match)
579         regmatch_t        matches[2];
580         struct macro_arg *marg;
581         const char       *search_pos;
582         int               retval;
584         do {
585                 search_pos = *next_match;
587                 STAILQ_FOREACH(marg, &mac_symbol->info.macroinfo->args, links) {
589                         retval = regexec(&marg->arg_regex, search_pos, 2,
590                                          matches, 0);
591                         if (retval == 0
592                          && (matches[1].rm_eo + search_pos) <= body_pos
593                          && (matches[1].rm_eo + search_pos) > *next_match) {
594                                 *match = matches[1];
595                                 *next_match = match->rm_eo + search_pos;
596                                 *match_marg = marg;
597                         }
598                 }
599         } while (search_pos != *next_match);
603 yywrap()
605         include_t *include;
607         yy_delete_buffer(YY_CURRENT_BUFFER);
608         (void)fclose(yyin);
609         if (yyfilename != NULL)
610                 free(yyfilename);
611         yyfilename = NULL;
612         include = include_stack.slh_first;
613         if (include != NULL) {
614                 yy_switch_to_buffer(include->buffer);
615                 yylineno = include->lineno;
616                 yyfilename = include->filename;
617                 SLIST_REMOVE_HEAD(&include_stack, links);
618                 free(include);
619                 return (0);
620         }
621         return (1);