source: trunk/src/binutils/gas/itbl-parse.c@ 73

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1
2/* A Bison parser, made from itbl-parse.y
3 by GNU Bison version 1.28 */
4
5#define YYBISON 1 /* Identify Bison output. */
6
7#define DREG 257
8#define CREG 258
9#define GREG 259
10#define IMMED 260
11#define ADDR 261
12#define INSN 262
13#define NUM 263
14#define ID 264
15#define NL 265
16#define PNUM 266
17
18#line 21 "itbl-parse.y"
19
20
21/*
22
23Yacc grammar for instruction table entries.
24
25=======================================================================
26Original Instruction table specification document:
27
28 MIPS Coprocessor Table Specification
29 ====================================
30
31This document describes the format of the MIPS coprocessor table. The
32table specifies a list of valid functions, data registers and control
33registers that can be used in coprocessor instructions. This list,
34together with the coprocessor instruction classes listed below,
35specifies the complete list of coprocessor instructions that will
36be recognized and assembled by the GNU assembler. In effect,
37this makes the GNU assembler table-driven, where the table is
38specified by the programmer.
39
40The table is an ordinary text file that the GNU assembler reads when
41it starts. Using the information in the table, the assembler
42generates an internal list of valid coprocessor registers and
43functions. The assembler uses this internal list in addition to the
44standard MIPS registers and instructions which are built-in to the
45assembler during code generation.
46
47To specify the coprocessor table when invoking the GNU assembler, use
48the command line option "--itbl file", where file is the
49complete name of the table, including path and extension.
50
51Examples:
52
53 gas -t cop.tbl test.s -o test.o
54 gas -t /usr/local/lib/cop.tbl test.s -o test.o
55 gas --itbl d:\gnu\data\cop.tbl test.s -o test.o
56
57Only one table may be supplied during a single invocation of
58the assembler.
59
60
61Instruction classes
62===================
63
64Below is a list of the valid coprocessor instruction classes for
65any given coprocessor "z". These instructions are already recognized
66by the assembler, and are listed here only for reference.
67
68Class format instructions
69-------------------------------------------------
70Class1:
71 op base rt offset
72 LWCz rt,offset (base)
73 SWCz rt,offset (base)
74Class2:
75 COPz sub rt rd 0
76 MTCz rt,rd
77 MFCz rt,rd
78 CTCz rt,rd
79 CFCz rt,rd
80Class3:
81 COPz CO cofun
82 COPz cofun
83Class4:
84 COPz BC br offset
85 BCzT offset
86 BCzF offset
87Class5:
88 COPz sub rt rd 0
89 DMFCz rt,rd
90 DMTCz rt,rd
91Class6:
92 op base rt offset
93 LDCz rt,offset (base)
94 SDCz rt,offset (base)
95Class7:
96 COPz BC br offset
97 BCzTL offset
98 BCzFL offset
99
100The coprocessor table defines coprocessor-specific registers that can
101be used with all of the above classes of instructions, where
102appropriate. It also defines additional coprocessor-specific
103functions for Class3 (COPz cofun) instructions, Thus, the table allows
104the programmer to use convenient mnemonics and operands for these
105functions, instead of the COPz mmenmonic and cofun operand.
106
107The names of the MIPS general registers and their aliases are defined
108by the assembler and will be recognized as valid register names by the
109assembler when used (where allowed) in coprocessor instructions.
110However, the names and values of all coprocessor data and control
111register mnemonics must be specified in the coprocessor table.
112
113
114Table Grammar
115=============
116
117Here is the grammar for the coprocessor table:
118
119 table -> entry*
120
121 entry -> [z entrydef] [comment] '\n'
122
123 entrydef -> type name val
124 entrydef -> 'insn' name val funcdef ; type of entry (instruction)
125
126 z -> 'p'['0'..'3'] ; processor number
127 type -> ['dreg' | 'creg' | 'greg' ] ; type of entry (register)
128 ; 'dreg', 'creg' or 'greg' specifies a data, control, or general
129 ; register mnemonic, respectively
130 name -> [ltr|dec]* ; mnemonic of register/function
131 val -> [dec|hex] ; register/function number (integer constant)
132
133 funcdef -> frange flags fields
134 ; bitfield range for opcode
135 ; list of fields' formats
136 fields -> field*
137 field -> [','] ftype frange flags
138 flags -> ['*' flagexpr]
139 flagexpr -> '[' flagexpr ']'
140 flagexpr -> val '|' flagexpr
141 ftype -> [ type | 'immed' | 'addr' ]
142 ; 'immed' specifies an immediate value; see grammar for "val" above
143 ; 'addr' specifies a C identifier; name of symbol to be resolved at
144 ; link time
145 frange -> ':' val '-' val ; starting to ending bit positions, where
146 ; where 0 is least significant bit
147 frange -> (null) ; default range of 31-0 will be assumed
148
149 comment -> [';'|'#'] [char]*
150 char -> any printable character
151 ltr -> ['a'..'z'|'A'..'Z']
152 dec -> ['0'..'9']* ; value in decimal
153 hex -> '0x'['0'..'9' | 'a'..'f' | 'A'..'F']* ; value in hexidecimal
154
155
156Examples
157========
158
159Example 1:
160
161The table:
162
163 p1 dreg d1 1 ; data register "d1" for COP1 has value 1
164 p1 creg c3 3 ; ctrl register "c3" for COP1 has value 3
165 p3 func fill 0x1f:24-20 ; function "fill" for COP3 has value 31 and
166 ; no fields
167
168will allow the assembler to accept the following coprocessor instructions:
169
170 LWC1 d1,0x100 ($2)
171 fill
172
173Here, the general purpose register "$2", and instruction "LWC1", are standard
174mnemonics built-in to the MIPS assembler.
175
176
177Example 2:
178
179The table:
180
181 p3 dreg d3 3 ; data register "d3" for COP3 has value 3
182 p3 creg c2 22 ; control register "c2" for COP3 has value 22
183 p3 func fee 0x1f:24-20 dreg:17-13 creg:12-8 immed:7-0
184 ; function "fee" for COP3 has value 31, and 3 fields
185 ; consisting of a data register, a control register,
186 ; and an immediate value.
187
188will allow the assembler to accept the following coprocessor instruction:
189
190 fee d3,c2,0x1
191
192and will emit the object code:
193
194 31-26 25 24-20 19-18 17-13 12-8 7-0
195 COPz CO fun dreg creg immed
196 010011 1 11111 00 00011 10110 00000001
197
198 0x4ff07601
199
200
201Example 3:
202
203The table:
204
205 p3 dreg d3 3 ; data register "d3" for COP3 has value 3
206 p3 creg c2 22 ; control register "c2" for COP3 has value 22
207 p3 func fuu 0x01f00001 dreg:17-13 creg:12-8
208
209will allow the assembler to accept the following coprocessor
210instruction:
211
212 fuu d3,c2
213
214and will emit the object code:
215
216 31-26 25 24-20 19-18 17-13 12-8 7-0
217 COPz CO fun dreg creg
218 010011 1 11111 00 00011 10110 00000001
219
220 0x4ff07601
221
222In this way, the programmer can force arbitrary bits of an instruction
223to have predefined values.
224
225=======================================================================
226Additional notes:
227
228Encoding of ranges:
229To handle more than one bit position range within an instruction,
230use 0s to mask out the ranges which don't apply.
231May decide to modify the syntax to allow commas separate multiple
232ranges within an instruction (range','range).
233
234Changes in grammar:
235 The number of parms argument to the function entry
236was deleted from the original format such that we now count the fields.
237
238----
239FIXME! should really change lexical analyzer
240to recognize 'dreg' etc. in context sensative way.
241Currently function names or mnemonics may be incorrectly parsed as keywords
242
243FIXME! hex is ambiguous with any digit
244
245*/
246
247#include <stdio.h>
248#include "itbl-ops.h"
249
250/* #define DEBUG */
251
252#ifdef DEBUG
253#ifndef DBG_LVL
254#define DBG_LVL 1
255#endif
256#else
257#define DBG_LVL 0
258#endif
259
260#if DBG_LVL >= 1
261#define DBG(x) printf x
262#else
263#define DBG(x)
264#endif
265
266#if DBG_LVL >= 2
267#define DBGL2(x) printf x
268#else
269#define DBGL2(x)
270#endif
271
272static int sbit, ebit;
273static struct itbl_entry *insn=0;
274extern int insntbl_line;
275int yyparse PARAMS ((void));
276int yylex PARAMS ((void));
277static int yyerror PARAMS ((const char *));
278
279
280#line 283 "itbl-parse.y"
281typedef union
282 {
283 char *str;
284 int num;
285 int processor;
286 unsigned long val;
287 } YYSTYPE;
288#include <stdio.h>
289
290#ifndef __cplusplus
291#ifndef __STDC__
292#define const
293#endif
294#endif
295
296
297
298#define YYFINAL 51
299#define YYFLAG -32768
300#define YYNTBASE 20
301
302#define YYTRANSLATE(x) ((unsigned)(x) <= 266 ? yytranslate[x] : 34)
303
304static const char yytranslate[] = { 0,
305 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
306 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
307 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
308 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
309 2, 17, 2, 13, 19, 2, 2, 2, 2, 2,
310 2, 2, 2, 2, 2, 2, 2, 18, 2, 2,
311 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
312 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
313 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
314 15, 2, 16, 2, 2, 2, 2, 2, 2, 2,
315 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
316 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
317 2, 2, 2, 14, 2, 2, 2, 2, 2, 2,
318 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
319 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
320 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
321 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
322 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
323 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
324 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
325 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
326 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
327 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
328 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
329 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
330 2, 2, 2, 2, 2, 1, 3, 4, 5, 6,
331 7, 8, 9, 10, 11, 12
332};
333
334#if YYDEBUG != 0
335static const short yyprhs[] = { 0,
336 0, 2, 5, 6, 12, 13, 23, 25, 28, 32,
337 35, 36, 38, 40, 42, 46, 50, 54, 56, 59,
338 60, 65, 66, 68, 70, 72, 74, 76, 78
339};
340
341static const short yyrhs[] = { 21,
342 0, 22, 21, 0, 0, 30, 31, 32, 33, 11,
343 0, 0, 30, 8, 32, 33, 29, 28, 23, 24,
344 11, 0, 11, 0, 1, 11, 0, 13, 26, 24,
345 0, 26, 24, 0, 0, 31, 0, 7, 0, 6,
346 0, 25, 29, 28, 0, 9, 14, 27, 0, 15,
347 27, 16, 0, 9, 0, 17, 27, 0, 0, 18,
348 9, 19, 9, 0, 0, 12, 0, 3, 0, 4,
349 0, 5, 0, 10, 0, 9, 0, 9, 0
350};
351
352#endif
353
354#if YYDEBUG != 0
355static const short yyrline[] = { 0,
356 300, 304, 306, 309, 316, 323, 324, 325, 328, 330,
357 331, 334, 340, 345, 352, 361, 366, 370, 376, 382,
358 388, 395, 402, 410, 416, 421, 428, 436, 444
359};
360#endif
361
362
363#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)
364
365static const char * const yytname[] = { "$","error","$undefined.","DREG","CREG",
366"GREG","IMMED","ADDR","INSN","NUM","ID","NL","PNUM","','","'|'","'['","']'",
367"'*'","':'","'-'","insntbl","entrys","entry","@1","fieldspecs","ftype","fieldspec",
368"flagexpr","flags","range","pnum","regtype","name","value", NULL
369};
370#endif
371
372static const short yyr1[] = { 0,
373 20, 21, 21, 22, 23, 22, 22, 22, 24, 24,
374 24, 25, 25, 25, 26, 27, 27, 27, 28, 28,
375 29, 29, 30, 31, 31, 31, 32, -1, 33
376};
377
378static const short yyr2[] = { 0,
379 1, 2, 0, 5, 0, 9, 1, 2, 3, 2,
380 0, 1, 1, 1, 3, 3, 3, 1, 2, 0,
381 4, 0, 1, 1, 1, 1, 1, 1, 1
382};
383
384static const short yydefact[] = { 0,
385 0, 7, 23, 1, 0, 0, 8, 2, 24, 25,
386 26, 0, 0, 27, 0, 0, 29, 22, 0, 0,
387 20, 4, 0, 0, 5, 0, 18, 0, 19, 11,
388 21, 0, 0, 14, 13, 0, 0, 22, 11, 12,
389 16, 17, 11, 6, 20, 10, 9, 15, 0, 0,
390 0
391};
392
393static const short yydefgoto[] = { 49,
394 4, 5, 30, 37, 38, 39, 29, 25, 21, 6,
395 40, 15, 18
396};
397
398static const short yypact[] = { 0,
399 -9,-32768,-32768,-32768, 0, 12,-32768,-32768,-32768,-32768,
400-32768, 3, 3,-32768, 9, 9,-32768, -8, 8, 19,
401 15,-32768, 10, -6,-32768, 24, 20, -6,-32768, 1,
402-32768, -6, 21,-32768,-32768, 18, 25, -8, 1,-32768,
403-32768,-32768, 1,-32768, 15,-32768,-32768,-32768, 35, 38,
404-32768
405};
406
407static const short yypgoto[] = {-32768,
408 34,-32768,-32768, -13,-32768, 4, -1, -4, 5,-32768,
409 36, 31, 29
410};
411
412
413#define YYLAST 45
414
415
416static const short yytable[] = { -3,
417 1, 7, 27, 9, 10, 11, 34, 35, 28, 20,
418 2, 3, 14, 36, 9, 10, 11, 17, 22, 12,
419 9, 10, 11, 34, 35, 46, 33, 23, 26, 47,
420 41, 24, 31, 32, 50, 44, 42, 51, 8, 43,
421 48, 13, 45, 16, 19
422};
423
424static const short yycheck[] = { 0,
425 1, 11, 9, 3, 4, 5, 6, 7, 15, 18,
426 11, 12, 10, 13, 3, 4, 5, 9, 11, 8,
427 3, 4, 5, 6, 7, 39, 28, 9, 19, 43,
428 32, 17, 9, 14, 0, 11, 16, 0, 5, 36,
429 45, 6, 38, 13, 16
430};
431/* -*-C-*- Note some compilers choke on comments on `#line' lines. */
432#line 3 "/usr/share/bison/bison.simple"
433/* This file comes from bison-1.28. */
434
435/* Skeleton output parser for bison,
436 Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
437
438 This program is free software; you can redistribute it and/or modify
439 it under the terms of the GNU General Public License as published by
440 the Free Software Foundation; either version 2, or (at your option)
441 any later version.
442
443 This program is distributed in the hope that it will be useful,
444 but WITHOUT ANY WARRANTY; without even the implied warranty of
445 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
446 GNU General Public License for more details.
447
448 You should have received a copy of the GNU General Public License
449 along with this program; if not, write to the Free Software
450 Foundation, Inc., 59 Temple Place - Suite 330,
451 Boston, MA 02111-1307, USA. */
452
453/* As a special exception, when this file is copied by Bison into a
454 Bison output file, you may use that output file without restriction.
455 This special exception was added by the Free Software Foundation
456 in version 1.24 of Bison. */
457
458/* This is the parser code that is written into each bison parser
459 when the %semantic_parser declaration is not specified in the grammar.
460 It was written by Richard Stallman by simplifying the hairy parser
461 used when %semantic_parser is specified. */
462
463#ifndef YYSTACK_USE_ALLOCA
464#ifdef alloca
465#define YYSTACK_USE_ALLOCA
466#else /* alloca not defined */
467#ifdef __GNUC__
468#define YYSTACK_USE_ALLOCA
469#define alloca __builtin_alloca
470#else /* not GNU C. */
471#if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
472#define YYSTACK_USE_ALLOCA
473#include <alloca.h>
474#else /* not sparc */
475/* We think this test detects Watcom and Microsoft C. */
476/* This used to test MSDOS, but that is a bad idea
477 since that symbol is in the user namespace. */
478#if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
479#if 0 /* No need for malloc.h, which pollutes the namespace;
480 instead, just don't use alloca. */
481#include <malloc.h>
482#endif
483#else /* not MSDOS, or __TURBOC__ */
484#if defined(_AIX)
485/* I don't know what this was needed for, but it pollutes the namespace.
486 So I turned it off. rms, 2 May 1997. */
487/* #include <malloc.h> */
488 #pragma alloca
489#define YYSTACK_USE_ALLOCA
490#else /* not MSDOS, or __TURBOC__, or _AIX */
491#if 0
492#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up,
493 and on HPUX 10. Eventually we can turn this on. */
494#define YYSTACK_USE_ALLOCA
495#define alloca __builtin_alloca
496#endif /* __hpux */
497#endif
498#endif /* not _AIX */
499#endif /* not MSDOS, or __TURBOC__ */
500#endif /* not sparc */
501#endif /* not GNU C */
502#endif /* alloca not defined */
503#endif /* YYSTACK_USE_ALLOCA not defined */
504
505#ifdef YYSTACK_USE_ALLOCA
506#define YYSTACK_ALLOC alloca
507#else
508#define YYSTACK_ALLOC malloc
509#endif
510
511/* Note: there must be only one dollar sign in this file.
512 It is replaced by the list of actions, each action
513 as one case of the switch. */
514
515#define yyerrok (yyerrstatus = 0)
516#define yyclearin (yychar = YYEMPTY)
517#define YYEMPTY -2
518#define YYEOF 0
519#define YYACCEPT goto yyacceptlab
520#define YYABORT goto yyabortlab
521#define YYERROR goto yyerrlab1
522/* Like YYERROR except do call yyerror.
523 This remains here temporarily to ease the
524 transition to the new meaning of YYERROR, for GCC.
525 Once GCC version 2 has supplanted version 1, this can go. */
526#define YYFAIL goto yyerrlab
527#define YYRECOVERING() (!!yyerrstatus)
528#define YYBACKUP(token, value) \
529do \
530 if (yychar == YYEMPTY && yylen == 1) \
531 { yychar = (token), yylval = (value); \
532 yychar1 = YYTRANSLATE (yychar); \
533 YYPOPSTACK; \
534 goto yybackup; \
535 } \
536 else \
537 { yyerror ("syntax error: cannot back up"); YYERROR; } \
538while (0)
539
540#define YYTERROR 1
541#define YYERRCODE 256
542
543#ifndef YYPURE
544#define YYLEX yylex()
545#endif
546
547#ifdef YYPURE
548#ifdef YYLSP_NEEDED
549#ifdef YYLEX_PARAM
550#define YYLEX yylex(&yylval, &yylloc, YYLEX_PARAM)
551#else
552#define YYLEX yylex(&yylval, &yylloc)
553#endif
554#else /* not YYLSP_NEEDED */
555#ifdef YYLEX_PARAM
556#define YYLEX yylex(&yylval, YYLEX_PARAM)
557#else
558#define YYLEX yylex(&yylval)
559#endif
560#endif /* not YYLSP_NEEDED */
561#endif
562
563/* If nonreentrant, generate the variables here */
564
565#ifndef YYPURE
566
567int yychar; /* the lookahead symbol */
568YYSTYPE yylval; /* the semantic value of the */
569 /* lookahead symbol */
570
571#ifdef YYLSP_NEEDED
572YYLTYPE yylloc; /* location data for the lookahead */
573 /* symbol */
574#endif
575
576int yynerrs; /* number of parse errors so far */
577#endif /* not YYPURE */
578
579#if YYDEBUG != 0
580int yydebug; /* nonzero means print parse trace */
581/* Since this is uninitialized, it does not stop multiple parsers
582 from coexisting. */
583#endif
584
585/* YYINITDEPTH indicates the initial size of the parser's stacks */
586
587#ifndef YYINITDEPTH
588#define YYINITDEPTH 200
589#endif
590
591/* YYMAXDEPTH is the maximum size the stacks can grow to
592 (effective only if the built-in stack extension method is used). */
593
594#if YYMAXDEPTH == 0
595#undef YYMAXDEPTH
596#endif
597
598#ifndef YYMAXDEPTH
599#define YYMAXDEPTH 10000
600#endif
601
602
603/* Define __yy_memcpy. Note that the size argument
604 should be passed with type unsigned int, because that is what the non-GCC
605 definitions require. With GCC, __builtin_memcpy takes an arg
606 of type size_t, but it can handle unsigned int. */
607
608#if __GNUC__ > 1 /* GNU C and GNU C++ define this. */
609#define __yy_memcpy(TO,FROM,COUNT) __builtin_memcpy(TO,FROM,COUNT)
610#else /* not GNU C or C++ */
611#ifndef __cplusplus
612
613/* This is the most reliable way to avoid incompatibilities
614 in available built-in functions on various systems. */
615static void
616__yy_memcpy (to, from, count)
617 char *to;
618 char *from;
619 unsigned int count;
620{
621 register char *f = from;
622 register char *t = to;
623 register int i = count;
624
625 while (i-- > 0)
626 *t++ = *f++;
627}
628
629#else /* __cplusplus */
630
631/* This is the most reliable way to avoid incompatibilities
632 in available built-in functions on various systems. */
633static void
634__yy_memcpy (char *to, char *from, unsigned int count)
635{
636 register char *t = to;
637 register char *f = from;
638 register int i = count;
639
640 while (i-- > 0)
641 *t++ = *f++;
642}
643
644#endif
645#endif
646
647
648#line 217 "/usr/share/bison/bison.simple"
649
650/* The user can define YYPARSE_PARAM as the name of an argument to be passed
651 into yyparse. The argument should have type void *.
652 It should actually point to an object.
653 Grammar actions can access the variable by casting it
654 to the proper pointer type. */
655
656#ifdef YYPARSE_PARAM
657#ifdef __cplusplus
658#define YYPARSE_PARAM_ARG void *YYPARSE_PARAM
659#define YYPARSE_PARAM_DECL
660#else /* not __cplusplus */
661#define YYPARSE_PARAM_ARG YYPARSE_PARAM
662#define YYPARSE_PARAM_DECL void *YYPARSE_PARAM;
663#endif /* not __cplusplus */
664#else /* not YYPARSE_PARAM */
665#define YYPARSE_PARAM_ARG
666#define YYPARSE_PARAM_DECL
667#endif /* not YYPARSE_PARAM */
668
669/* Prevent warning if -Wstrict-prototypes. */
670#ifdef __GNUC__
671#ifdef YYPARSE_PARAM
672int yyparse (void *);
673#else
674int yyparse (void);
675#endif
676#endif
677
678int
679yyparse(YYPARSE_PARAM_ARG)
680 YYPARSE_PARAM_DECL
681{
682 register int yystate;
683 register int yyn;
684 register short *yyssp;
685 register YYSTYPE *yyvsp;
686 int yyerrstatus; /* number of tokens to shift before error messages enabled */
687 int yychar1 = 0; /* lookahead token as an internal (translated) token number */
688
689 short yyssa[YYINITDEPTH]; /* the state stack */
690 YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
691
692 short *yyss = yyssa; /* refer to the stacks thru separate pointers */
693 YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
694
695#ifdef YYLSP_NEEDED
696 YYLTYPE yylsa[YYINITDEPTH]; /* the location stack */
697 YYLTYPE *yyls = yylsa;
698 YYLTYPE *yylsp;
699
700#define YYPOPSTACK (yyvsp--, yyssp--, yylsp--)
701#else
702#define YYPOPSTACK (yyvsp--, yyssp--)
703#endif
704
705 int yystacksize = YYINITDEPTH;
706 int yyfree_stacks = 0;
707
708#ifdef YYPURE
709 int yychar;
710 YYSTYPE yylval;
711 int yynerrs;
712#ifdef YYLSP_NEEDED
713 YYLTYPE yylloc;
714#endif
715#endif
716
717 YYSTYPE yyval; /* the variable used to return */
718 /* semantic values from the action */
719 /* routines */
720
721 int yylen;
722
723#if YYDEBUG != 0
724 if (yydebug)
725 fprintf(stderr, "Starting parse\n");
726#endif
727
728 yystate = 0;
729 yyerrstatus = 0;
730 yynerrs = 0;
731 yychar = YYEMPTY; /* Cause a token to be read. */
732
733 /* Initialize stack pointers.
734 Waste one element of value and location stack
735 so that they stay on the same level as the state stack.
736 The wasted elements are never initialized. */
737
738 yyssp = yyss - 1;
739 yyvsp = yyvs;
740#ifdef YYLSP_NEEDED
741 yylsp = yyls;
742#endif
743
744/* Push a new state, which is found in yystate . */
745/* In all cases, when you get here, the value and location stacks
746 have just been pushed. so pushing a state here evens the stacks. */
747yynewstate:
748
749 *++yyssp = yystate;
750
751 if (yyssp >= yyss + yystacksize - 1)
752 {
753 /* Give user a chance to reallocate the stack */
754 /* Use copies of these so that the &'s don't force the real ones into memory. */
755 YYSTYPE *yyvs1 = yyvs;
756 short *yyss1 = yyss;
757#ifdef YYLSP_NEEDED
758 YYLTYPE *yyls1 = yyls;
759#endif
760
761 /* Get the current used size of the three stacks, in elements. */
762 int size = yyssp - yyss + 1;
763
764#ifdef yyoverflow
765 /* Each stack pointer address is followed by the size of
766 the data in use in that stack, in bytes. */
767#ifdef YYLSP_NEEDED
768 /* This used to be a conditional around just the two extra args,
769 but that might be undefined if yyoverflow is a macro. */
770 yyoverflow("parser stack overflow",
771 &yyss1, size * sizeof (*yyssp),
772 &yyvs1, size * sizeof (*yyvsp),
773 &yyls1, size * sizeof (*yylsp),
774 &yystacksize);
775#else
776 yyoverflow("parser stack overflow",
777 &yyss1, size * sizeof (*yyssp),
778 &yyvs1, size * sizeof (*yyvsp),
779 &yystacksize);
780#endif
781
782 yyss = yyss1; yyvs = yyvs1;
783#ifdef YYLSP_NEEDED
784 yyls = yyls1;
785#endif
786#else /* no yyoverflow */
787 /* Extend the stack our own way. */
788 if (yystacksize >= YYMAXDEPTH)
789 {
790 yyerror("parser stack overflow");
791 if (yyfree_stacks)
792 {
793 free (yyss);
794 free (yyvs);
795#ifdef YYLSP_NEEDED
796 free (yyls);
797#endif
798 }
799 return 2;
800 }
801 yystacksize *= 2;
802 if (yystacksize > YYMAXDEPTH)
803 yystacksize = YYMAXDEPTH;
804#ifndef YYSTACK_USE_ALLOCA
805 yyfree_stacks = 1;
806#endif
807 yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
808 __yy_memcpy ((char *)yyss, (char *)yyss1,
809 size * (unsigned int) sizeof (*yyssp));
810 yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
811 __yy_memcpy ((char *)yyvs, (char *)yyvs1,
812 size * (unsigned int) sizeof (*yyvsp));
813#ifdef YYLSP_NEEDED
814 yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
815 __yy_memcpy ((char *)yyls, (char *)yyls1,
816 size * (unsigned int) sizeof (*yylsp));
817#endif
818#endif /* no yyoverflow */
819
820 yyssp = yyss + size - 1;
821 yyvsp = yyvs + size - 1;
822#ifdef YYLSP_NEEDED
823 yylsp = yyls + size - 1;
824#endif
825
826#if YYDEBUG != 0
827 if (yydebug)
828 fprintf(stderr, "Stack size increased to %d\n", yystacksize);
829#endif
830
831 if (yyssp >= yyss + yystacksize - 1)
832 YYABORT;
833 }
834
835#if YYDEBUG != 0
836 if (yydebug)
837 fprintf(stderr, "Entering state %d\n", yystate);
838#endif
839
840 goto yybackup;
841 yybackup:
842
843/* Do appropriate processing given the current state. */
844/* Read a lookahead token if we need one and don't already have one. */
845/* yyresume: */
846
847 /* First try to decide what to do without reference to lookahead token. */
848
849 yyn = yypact[yystate];
850 if (yyn == YYFLAG)
851 goto yydefault;
852
853 /* Not known => get a lookahead token if don't already have one. */
854
855 /* yychar is either YYEMPTY or YYEOF
856 or a valid token in external form. */
857
858 if (yychar == YYEMPTY)
859 {
860#if YYDEBUG != 0
861 if (yydebug)
862 fprintf(stderr, "Reading a token: ");
863#endif
864 yychar = YYLEX;
865 }
866
867 /* Convert token to internal form (in yychar1) for indexing tables with */
868
869 if (yychar <= 0) /* This means end of input. */
870 {
871 yychar1 = 0;
872 yychar = YYEOF; /* Don't call YYLEX any more */
873
874#if YYDEBUG != 0
875 if (yydebug)
876 fprintf(stderr, "Now at end of input.\n");
877#endif
878 }
879 else
880 {
881 yychar1 = YYTRANSLATE(yychar);
882
883#if YYDEBUG != 0
884 if (yydebug)
885 {
886 fprintf (stderr, "Next token is %d (%s", yychar, yytname[yychar1]);
887 /* Give the individual parser a way to print the precise meaning
888 of a token, for further debugging info. */
889#ifdef YYPRINT
890 YYPRINT (stderr, yychar, yylval);
891#endif
892 fprintf (stderr, ")\n");
893 }
894#endif
895 }
896
897 yyn += yychar1;
898 if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
899 goto yydefault;
900
901 yyn = yytable[yyn];
902
903 /* yyn is what to do for this token type in this state.
904 Negative => reduce, -yyn is rule number.
905 Positive => shift, yyn is new state.
906 New state is final state => don't bother to shift,
907 just return success.
908 0, or most negative number => error. */
909
910 if (yyn < 0)
911 {
912 if (yyn == YYFLAG)
913 goto yyerrlab;
914 yyn = -yyn;
915 goto yyreduce;
916 }
917 else if (yyn == 0)
918 goto yyerrlab;
919
920 if (yyn == YYFINAL)
921 YYACCEPT;
922
923 /* Shift the lookahead token. */
924
925#if YYDEBUG != 0
926 if (yydebug)
927 fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]);
928#endif
929
930 /* Discard the token being shifted unless it is eof. */
931 if (yychar != YYEOF)
932 yychar = YYEMPTY;
933
934 *++yyvsp = yylval;
935#ifdef YYLSP_NEEDED
936 *++yylsp = yylloc;
937#endif
938
939 /* count tokens shifted since error; after three, turn off error status. */
940 if (yyerrstatus) yyerrstatus--;
941
942 yystate = yyn;
943 goto yynewstate;
944
945/* Do the default action for the current state. */
946yydefault:
947
948 yyn = yydefact[yystate];
949 if (yyn == 0)
950 goto yyerrlab;
951
952/* Do a reduction. yyn is the number of a rule to reduce with. */
953yyreduce:
954 yylen = yyr2[yyn];
955 if (yylen > 0)
956 yyval = yyvsp[1-yylen]; /* implement default value of the action */
957
958#if YYDEBUG != 0
959 if (yydebug)
960 {
961 int i;
962
963 fprintf (stderr, "Reducing via rule %d (line %d), ",
964 yyn, yyrline[yyn]);
965
966 /* Print the symbols being reduced, and their result. */
967 for (i = yyprhs[yyn]; yyrhs[i] > 0; i++)
968 fprintf (stderr, "%s ", yytname[yyrhs[i]]);
969 fprintf (stderr, " -> %s\n", yytname[yyr1[yyn]]);
970 }
971#endif
972
973
974 switch (yyn) {
975
976case 4:
977#line 311 "itbl-parse.y"
978{
979 DBG (("line %d: entry pnum=%d type=%d name=%s value=x%x\n",
980 insntbl_line, yyvsp[-4].num, yyvsp[-3].num, yyvsp[-2].str, yyvsp[-1].val));
981 itbl_add_reg (yyvsp[-4].num, yyvsp[-3].num, yyvsp[-2].str, yyvsp[-1].val);
982 ;
983 break;}
984case 5:
985#line 317 "itbl-parse.y"
986{
987 DBG (("line %d: entry pnum=%d type=INSN name=%s value=x%x",
988 insntbl_line, yyvsp[-5].num, yyvsp[-3].str, yyvsp[-2].val));
989 DBG ((" sbit=%d ebit=%d flags=0x%x\n", sbit, ebit, yyvsp[0].val));
990 insn=itbl_add_insn (yyvsp[-5].num, yyvsp[-3].str, yyvsp[-2].val, sbit, ebit, yyvsp[0].val);
991 ;
992 break;}
993case 12:
994#line 336 "itbl-parse.y"
995{
996 DBGL2 (("ftype\n"));
997 yyval.num = yyvsp[0].num;
998 ;
999 break;}
1000case 13:
1001#line 341 "itbl-parse.y"
1002{
1003 DBGL2 (("addr\n"));
1004 yyval.num = ADDR;
1005 ;
1006 break;}
1007case 14:
1008#line 346 "itbl-parse.y"
1009{
1010 DBGL2 (("immed\n"));
1011 yyval.num = IMMED;
1012 ;
1013 break;}
1014case 15:
1015#line 354 "itbl-parse.y"
1016{
1017 DBG (("line %d: field type=%d sbit=%d ebit=%d, flags=0x%x\n",
1018 insntbl_line, yyvsp[-2].num, sbit, ebit, yyvsp[0].val));
1019 itbl_add_operand (insn, yyvsp[-2].num, sbit, ebit, yyvsp[0].val);
1020 ;
1021 break;}
1022case 16:
1023#line 363 "itbl-parse.y"
1024{
1025 yyval.val = yyvsp[-2].num | yyvsp[0].val;
1026 ;
1027 break;}
1028case 17:
1029#line 367 "itbl-parse.y"
1030{
1031 yyval.val = yyvsp[-1].val;
1032 ;
1033 break;}
1034case 18:
1035#line 371 "itbl-parse.y"
1036{
1037 yyval.val = yyvsp[0].num;
1038 ;
1039 break;}
1040case 19:
1041#line 378 "itbl-parse.y"
1042{
1043 DBGL2 (("flags=%d\n", yyvsp[0].val));
1044 yyval.val = yyvsp[0].val;
1045 ;
1046 break;}
1047case 20:
1048#line 383 "itbl-parse.y"
1049{
1050 yyval.val = 0;
1051 ;
1052 break;}
1053case 21:
1054#line 390 "itbl-parse.y"
1055{
1056 DBGL2 (("range %d %d\n", yyvsp[-2].num, yyvsp[0].num));
1057 sbit = yyvsp[-2].num;
1058 ebit = yyvsp[0].num;
1059 ;
1060 break;}
1061case 22:
1062#line 396 "itbl-parse.y"
1063{
1064 sbit = 31;
1065 ebit = 0;
1066 ;
1067 break;}
1068case 23:
1069#line 404 "itbl-parse.y"
1070{
1071 DBGL2 (("pnum=%d\n",yyvsp[0].num));
1072 yyval.num = yyvsp[0].num;
1073 ;
1074 break;}
1075case 24:
1076#line 412 "itbl-parse.y"
1077{
1078 DBGL2 (("dreg\n"));
1079 yyval.num = DREG;
1080 ;
1081 break;}
1082case 25:
1083#line 417 "itbl-parse.y"
1084{
1085 DBGL2 (("creg\n"));
1086 yyval.num = CREG;
1087 ;
1088 break;}
1089case 26:
1090#line 422 "itbl-parse.y"
1091{
1092 DBGL2 (("greg\n"));
1093 yyval.num = GREG;
1094 ;
1095 break;}
1096case 27:
1097#line 430 "itbl-parse.y"
1098{
1099 DBGL2 (("name=%s\n",yyvsp[0].str));
1100 yyval.str = yyvsp[0].str;
1101 ;
1102 break;}
1103case 28:
1104#line 438 "itbl-parse.y"
1105{
1106 DBGL2 (("num=%d\n",yyvsp[0].num));
1107 yyval.num = yyvsp[0].num;
1108 ;
1109 break;}
1110case 29:
1111#line 446 "itbl-parse.y"
1112{
1113 DBGL2 (("val=x%x\n",yyvsp[0].num));
1114 yyval.val = yyvsp[0].num;
1115 ;
1116 break;}
1117}
1118 /* the action file gets copied in in place of this dollarsign */
1119#line 543 "/usr/share/bison/bison.simple"
1120
1121
1122 yyvsp -= yylen;
1123 yyssp -= yylen;
1124#ifdef YYLSP_NEEDED
1125 yylsp -= yylen;
1126#endif
1127
1128#if YYDEBUG != 0
1129 if (yydebug)
1130 {
1131 short *ssp1 = yyss - 1;
1132 fprintf (stderr, "state stack now");
1133 while (ssp1 != yyssp)
1134 fprintf (stderr, " %d", *++ssp1);
1135 fprintf (stderr, "\n");
1136 }
1137#endif
1138
1139 *++yyvsp = yyval;
1140
1141#ifdef YYLSP_NEEDED
1142 yylsp++;
1143 if (yylen == 0)
1144 {
1145 yylsp->first_line = yylloc.first_line;
1146 yylsp->first_column = yylloc.first_column;
1147 yylsp->last_line = (yylsp-1)->last_line;
1148 yylsp->last_column = (yylsp-1)->last_column;
1149 yylsp->text = 0;
1150 }
1151 else
1152 {
1153 yylsp->last_line = (yylsp+yylen-1)->last_line;
1154 yylsp->last_column = (yylsp+yylen-1)->last_column;
1155 }
1156#endif
1157
1158 /* Now "shift" the result of the reduction.
1159 Determine what state that goes to,
1160 based on the state we popped back to
1161 and the rule number reduced by. */
1162
1163 yyn = yyr1[yyn];
1164
1165 yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
1166 if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
1167 yystate = yytable[yystate];
1168 else
1169 yystate = yydefgoto[yyn - YYNTBASE];
1170
1171 goto yynewstate;
1172
1173yyerrlab: /* here on detecting error */
1174
1175 if (! yyerrstatus)
1176 /* If not already recovering from an error, report this error. */
1177 {
1178 ++yynerrs;
1179
1180#ifdef YYERROR_VERBOSE
1181 yyn = yypact[yystate];
1182
1183 if (yyn > YYFLAG && yyn < YYLAST)
1184 {
1185 int size = 0;
1186 char *msg;
1187 int x, count;
1188
1189 count = 0;
1190 /* Start X at -yyn if nec to avoid negative indexes in yycheck. */
1191 for (x = (yyn < 0 ? -yyn : 0);
1192 x < (sizeof(yytname) / sizeof(char *)); x++)
1193 if (yycheck[x + yyn] == x)
1194 size += strlen(yytname[x]) + 15, count++;
1195 msg = (char *) malloc(size + 15);
1196 if (msg != 0)
1197 {
1198 strcpy(msg, "parse error");
1199
1200 if (count < 5)
1201 {
1202 count = 0;
1203 for (x = (yyn < 0 ? -yyn : 0);
1204 x < (sizeof(yytname) / sizeof(char *)); x++)
1205 if (yycheck[x + yyn] == x)
1206 {
1207 strcat(msg, count == 0 ? ", expecting `" : " or `");
1208 strcat(msg, yytname[x]);
1209 strcat(msg, "'");
1210 count++;
1211 }
1212 }
1213 yyerror(msg);
1214 free(msg);
1215 }
1216 else
1217 yyerror ("parse error; also virtual memory exceeded");
1218 }
1219 else
1220#endif /* YYERROR_VERBOSE */
1221 yyerror("parse error");
1222 }
1223
1224 goto yyerrlab1;
1225yyerrlab1: /* here on error raised explicitly by an action */
1226
1227 if (yyerrstatus == 3)
1228 {
1229 /* if just tried and failed to reuse lookahead token after an error, discard it. */
1230
1231 /* return failure if at end of input */
1232 if (yychar == YYEOF)
1233 YYABORT;
1234
1235#if YYDEBUG != 0
1236 if (yydebug)
1237 fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]);
1238#endif
1239
1240 yychar = YYEMPTY;
1241 }
1242
1243 /* Else will try to reuse lookahead token
1244 after shifting the error token. */
1245
1246 yyerrstatus = 3; /* Each real token shifted decrements this */
1247
1248 goto yyerrhandle;
1249
1250yyerrdefault: /* current state does not do anything special for the error token. */
1251
1252#if 0
1253 /* This is wrong; only states that explicitly want error tokens
1254 should shift them. */
1255 yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
1256 if (yyn) goto yydefault;
1257#endif
1258
1259yyerrpop: /* pop the current state because it cannot handle the error token */
1260
1261 if (yyssp == yyss) YYABORT;
1262 yyvsp--;
1263 yystate = *--yyssp;
1264#ifdef YYLSP_NEEDED
1265 yylsp--;
1266#endif
1267
1268#if YYDEBUG != 0
1269 if (yydebug)
1270 {
1271 short *ssp1 = yyss - 1;
1272 fprintf (stderr, "Error: state stack now");
1273 while (ssp1 != yyssp)
1274 fprintf (stderr, " %d", *++ssp1);
1275 fprintf (stderr, "\n");
1276 }
1277#endif
1278
1279yyerrhandle:
1280
1281 yyn = yypact[yystate];
1282 if (yyn == YYFLAG)
1283 goto yyerrdefault;
1284
1285 yyn += YYTERROR;
1286 if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
1287 goto yyerrdefault;
1288
1289 yyn = yytable[yyn];
1290 if (yyn < 0)
1291 {
1292 if (yyn == YYFLAG)
1293 goto yyerrpop;
1294 yyn = -yyn;
1295 goto yyreduce;
1296 }
1297 else if (yyn == 0)
1298 goto yyerrpop;
1299
1300 if (yyn == YYFINAL)
1301 YYACCEPT;
1302
1303#if YYDEBUG != 0
1304 if (yydebug)
1305 fprintf(stderr, "Shifting error token, ");
1306#endif
1307
1308 *++yyvsp = yylval;
1309#ifdef YYLSP_NEEDED
1310 *++yylsp = yylloc;
1311#endif
1312
1313 yystate = yyn;
1314 goto yynewstate;
1315
1316 yyacceptlab:
1317 /* YYACCEPT comes here. */
1318 if (yyfree_stacks)
1319 {
1320 free (yyss);
1321 free (yyvs);
1322#ifdef YYLSP_NEEDED
1323 free (yyls);
1324#endif
1325 }
1326 return 0;
1327
1328 yyabortlab:
1329 /* YYABORT comes here. */
1330 if (yyfree_stacks)
1331 {
1332 free (yyss);
1333 free (yyvs);
1334#ifdef YYLSP_NEEDED
1335 free (yyls);
1336#endif
1337 }
1338 return 1;
1339}
1340#line 451 "itbl-parse.y"
1341
1342
1343static int
1344yyerror (msg)
1345 const char *msg;
1346{
1347 printf ("line %d: %s\n", insntbl_line, msg);
1348 return 0;
1349}
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