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source: trunk/src/binutils/opcodes/ia64-gen.c@ 1489

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Last change on this file since 1489 was 610, checked in by bird, 22 years ago
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1	/* ia64-gen.c -- Generate a shrunk set of opcode tables
2	Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
3	Written by Bob Manson, Cygnus Solutions, <manson@cygnus.com>
4
5	This file is part of GDB, GAS, and the GNU binutils.
6
7	GDB, GAS, and the GNU binutils are free software; you can redistribute
8	them and/or modify them under the terms of the GNU General Public
9	License as published by the Free Software Foundation; either version
10	2, or (at your option) any later version.
11
12	GDB, GAS, and the GNU binutils are distributed in the hope that they
13	will be useful, but WITHOUT ANY WARRANTY; without even the implied
14	warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15	the GNU General Public License for more details.
16
17	You should have received a copy of the GNU General Public License
18	along with this file; see the file COPYING. If not, write to the
19	Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
20	02111-1307, USA. */
21
22	/* While the ia64-opc-* set of opcode tables are easy to maintain,
23	they waste a tremendous amount of space. ia64-gen rearranges the
24	instructions into a directed acyclic graph (DAG) of instruction opcodes and
25	their possible completers, as well as compacting the set of strings used.
26
27	The disassembler table consists of a state machine that does
28	branching based on the bits of the opcode being disassembled. The
29	state encodings have been chosen to minimize the amount of space
30	required.
31
32	The resource table is constructed based on some text dependency tables,
33	which are also easier to maintain than the final representation. */
34
35	#include <stdio.h>
36	#include <stdarg.h>
37	#include <errno.h>
38
39	#include "ansidecl.h"
40	#include "libiberty.h"
41	#include "safe-ctype.h"
42	#include "sysdep.h"
43	#include "getopt.h"
44	#include "ia64-opc.h"
45	#include "ia64-opc-a.c"
46	#include "ia64-opc-i.c"
47	#include "ia64-opc-m.c"
48	#include "ia64-opc-b.c"
49	#include "ia64-opc-f.c"
50	#include "ia64-opc-x.c"
51	#include "ia64-opc-d.c"
52
53	#include <libintl.h>
54	#define _(String) gettext (String)
55
56	const char * program_name = NULL;
57	int debug = 0;
58
59	#define tmalloc(X) (X *) xmalloc (sizeof (X))
60
61	/* The main opcode table entry. Each entry is a unique combination of
62	name and flags (no two entries in the table compare as being equal
63	via opcodes_eq). */
64	struct main_entry
65	{
66	/* The base name of this opcode. The names of its completers are
67	appended to it to generate the full instruction name. */
68	struct string_entry *name;
69	/* The base opcode entry. Which one to use is a fairly arbitrary choice;
70	it uses the first one passed to add_opcode_entry. */
71	struct ia64_opcode *opcode;
72	/* The list of completers that can be applied to this opcode. */
73	struct completer_entry *completers;
74	/* Next entry in the chain. */
75	struct main_entry *next;
76	/* Index in the main table. */
77	int main_index;
78	} maintable, *ordered_table;
79
80	int otlen = 0;
81	int ottotlen = 0;
82	int opcode_count = 0;
83
84	/* The set of possible completers for an opcode. */
85	struct completer_entry
86	{
87	/* This entry's index in the ia64_completer_table[] array. */
88	int num;
89
90	/* The name of the completer. */
91	struct string_entry *name;
92
93	/* This entry's parent. */
94	struct completer_entry *parent;
95
96	/* Set if this is a terminal completer (occurs at the end of an
97	opcode). */
98	int is_terminal;
99
100	/* An alternative completer. */
101	struct completer_entry *alternative;
102
103	/* Additional completers that can be appended to this one. */
104	struct completer_entry *addl_entries;
105
106	/* Before compute_completer_bits () is invoked, this contains the actual
107	instruction opcode for this combination of opcode and completers.
108	Afterwards, it contains those bits that are different from its
109	parent opcode. */
110	ia64_insn bits;
111
112	/* Bits set to 1 correspond to those bits in this completer's opcode
113	that are different from its parent completer's opcode (or from
114	the base opcode if the entry is the root of the opcode's completer
115	list). This field is filled in by compute_completer_bits (). */
116	ia64_insn mask;
117
118	/* Index into the opcode dependency list, or -1 if none. */
119	int dependencies;
120
121	/* Remember the order encountered in the opcode tables. */
122	int order;
123	};
124
125	/* One entry in the disassembler name table. */
126	struct disent
127	{
128	/* The index into the ia64_name_dis array for this entry. */
129	int ournum;
130
131	/* The index into the main_table[] array. */
132	int insn;
133
134	/* The disassmbly priority of this entry. */
135	int priority;
136
137	/* The completer_index value for this entry. */
138	int completer_index;
139
140	/* How many other entries share this decode. */
141	int nextcnt;
142
143	/* The next entry sharing the same decode. */
144	struct disent *nexte;
145
146	/* The next entry in the name list. */
147	struct disent *next_ent;
148	} *disinsntable = NULL;
149
150	/* A state machine that will eventually be used to generate the
151	disassembler table. */
152	struct bittree
153	{
154	struct disent *disent;
155	struct bittree bits[3]; / 0, 1, and X (don't care). */
156	int bits_to_skip;
157	int skip_flag;
158	} *bittree;
159
160	/* The string table contains all opcodes and completers sorted in
161	alphabetical order. */
162
163	/* One entry in the string table. */
164	struct string_entry
165	{
166	/* The index in the ia64_strings[] array for this entry. */
167	int num;
168	/* And the string. */
169	char *s;
170	} **string_table = NULL;
171
172	int strtablen = 0;
173	int strtabtotlen = 0;
174
175
176
177	/* Resource dependency entries. */
178	struct rdep
179	{
180	char name; / Resource name. */
181	unsigned
182	mode:2, /* RAW, WAW, or WAR. */
183	semantics:3; /* Dependency semantics. */
184	char extra; / Additional semantics info. */
185	int nchks;
186	int total_chks; /* Total #of terminal insns. */
187	int chks; / Insn classes which read (RAW), write
188	(WAW), or write (WAR) this rsrc. */
189	int chknotes; / Dependency notes for each class. */
190	int nregs;
191	int total_regs; /* Total #of terminal insns. */
192	int regs; / Insn class which write (RAW), write2
193	(WAW), or read (WAR) this rsrc. */
194	int regnotes; / Dependency notes for each class. */
195
196	int waw_special; /* Special WAW dependency note. */
197	} **rdeps = NULL;
198
199	static int rdepslen = 0;
200	static int rdepstotlen = 0;
201
202	/* Array of all instruction classes. */
203	struct iclass
204	{
205	char name; / Instruction class name. */
206	int is_class; /* Is a class, not a terminal. */
207	int nsubs;
208	int subs; / Other classes within this class. */
209	int nxsubs;
210	int xsubs[4]; /* Exclusions. */
211	char comment; / Optional comment. */
212	int note; /* Optional note. */
213	int terminal_resolved; /* Did we match this with anything? */
214	int orphan; /* Detect class orphans. */
215	} **ics = NULL;
216
217	static int iclen = 0;
218	static int ictotlen = 0;
219
220	/* An opcode dependency (chk/reg pair of dependency lists). */
221	struct opdep
222	{
223	int chk; /* index into dlists */
224	int reg; /* index into dlists */
225	} **opdeps;
226
227	static int opdeplen = 0;
228	static int opdeptotlen = 0;
229
230	/* A generic list of dependencies w/notes encoded. These may be shared. */
231	struct deplist
232	{
233	int len;
234	unsigned short *deps;
235	} **dlists;
236
237	static int dlistlen = 0;
238	static int dlisttotlen = 0;
239
240
241	static void fail (const char *, ...);
242	static void warn (const char *, ...);
243	static struct rdep * insert_resource (const char *, enum ia64_dependency_mode);
244	static int deplist_equals (struct deplist , struct deplist );
245	static short insert_deplist (int, unsigned short *);
246	static short insert_dependencies (int, unsigned short , int, unsigned short );
247	static void mark_used (struct iclass *, int);
248	static int fetch_insn_class (const char *, int);
249	static int sub_compare (const void , const void );
250	static void load_insn_classes (void);
251	static void parse_resource_users (const char , int , int , int **);
252	static int parse_semantics (char *);
253	static void add_dep (const char , const char , const char , int, int, char , int);
254	static void load_depfile (const char *, enum ia64_dependency_mode);
255	static void load_dependencies (void);
256	static int irf_operand (int, const char *);
257	static int in_iclass_mov_x (struct ia64_opcode , struct iclass , const char , const char );
258	static int in_iclass (struct ia64_opcode , struct iclass , const char , const char , int *);
259	static int lookup_regindex (const char *, int);
260	static int lookup_specifier (const char *);
261	static void print_dependency_table (void);
262	static struct string_entry * insert_string (char *);
263	static void gen_dis_table (struct bittree *);
264	static void print_dis_table (void);
265	static void generate_disassembler (void);
266	static void print_string_table (void);
267	static int completer_entries_eq (struct completer_entry , struct completer_entry );
268	static struct completer_entry * insert_gclist (struct completer_entry *);
269	static int get_prefix_len (const char *);
270	static void compute_completer_bits (struct main_entry , struct completer_entry );
271	static void collapse_redundant_completers (void);
272	static int insert_opcode_dependencies (struct ia64_opcode , struct completer_entry );
273	static void insert_completer_entry (struct ia64_opcode , struct main_entry , int);
274	static void print_completer_entry (struct completer_entry *);
275	static void print_completer_table (void);
276	static int opcodes_eq (struct ia64_opcode , struct ia64_opcode );
277	static void add_opcode_entry (struct ia64_opcode *);
278	static void print_main_table (void);
279	static void shrink (struct ia64_opcode *);
280	static void print_version (void);
281	static void usage (FILE *, int);
282	static void finish_distable (void);
283	static void insert_bit_table_ent (struct bittree *, int, ia64_insn, ia64_insn, int, int, int);
284	static void add_dis_entry (struct bittree , ia64_insn, ia64_insn, int, struct completer_entry , int);
285	static void compact_distree (struct bittree *);
286	static struct bittree * make_bittree_entry (void);
287	static struct disent * add_dis_table_ent (struct disent *, int, int, int);
288
289
290
291	static void
292	fail (const char *message, ...)
293	{
294	va_list args;
295
296	va_start (args, message);
297	fprintf (stderr, _("%s: Error: "), program_name);
298	vfprintf (stderr, message, args);
299	va_end (args);
300	xexit (1);
301	}
302
303	static void
304	warn (const char *message, ...)
305	{
306	va_list args;
307
308	va_start (args, message);
309
310	fprintf (stderr, _("%s: Warning: "), program_name);
311	vfprintf (stderr, message, args);
312	va_end (args);
313	}
314
315	/* Add NAME to the resource table, where TYPE is RAW or WAW. */
316	static struct rdep *
317	insert_resource (const char *name, enum ia64_dependency_mode type)
318	{
319	if (rdepslen == rdepstotlen)
320	{
321	rdepstotlen += 20;
322	rdeps = (struct rdep **)
323	xrealloc (rdeps, sizeof(struct rdep *) rdepstotlen);
324	}
325	rdeps[rdepslen] = tmalloc(struct rdep);
326	memset((void *)rdeps[rdepslen], 0, sizeof(struct rdep));
327	rdeps[rdepslen]->name = xstrdup (name);
328	rdeps[rdepslen]->mode = type;
329	rdeps[rdepslen]->waw_special = 0;
330
331	return rdeps[rdepslen++];
332	}
333
334	/* Are the lists of dependency indexes equivalent? */
335	static int
336	deplist_equals (struct deplist d1, struct deplist d2)
337	{
338	int i;
339
340	if (d1->len != d2->len)
341	return 0;
342
343	for (i = 0; i < d1->len; i++)
344	if (d1->deps[i] != d2->deps[i])
345	return 0;
346
347	return 1;
348	}
349
350	/* Add the list of dependencies to the list of dependency lists. */
351	static short
352	insert_deplist (int count, unsigned short *deps)
353	{
354	/* Sort the list, then see if an equivalent list exists already.
355	this results in a much smaller set of dependency lists. */
356	struct deplist *list;
357	char set[0x10000];
358	int i;
359
360	memset ((void *)set, 0, sizeof (set));
361	for (i = 0; i < count; i++)
362	set[deps[i]] = 1;
363
364	count = 0;
365	for (i = 0; i < (int) sizeof (set); i++)
366	if (set[i])
367	++count;
368
369	list = tmalloc (struct deplist);
370	list->len = count;
371	list->deps = (unsigned short ) malloc (sizeof (unsigned short) count);
372
373	for (i = 0, count = 0; i < (int) sizeof (set); i++)
374	if (set[i])
375	list->deps[count++] = i;
376
377	/* Does this list exist already? */
378	for (i = 0; i < dlistlen; i++)
379	if (deplist_equals (list, dlists[i]))
380	{
381	free (list->deps);
382	free (list);
383	return i;
384	}
385
386	if (dlistlen == dlisttotlen)
387	{
388	dlisttotlen += 20;
389	dlists = (struct deplist **)
390	xrealloc (dlists, sizeof(struct deplist *) dlisttotlen);
391	}
392	dlists[dlistlen] = list;
393
394	return dlistlen++;
395	}
396
397	/* Add the given pair of dependency lists to the opcode dependency list. */
398	static short
399	insert_dependencies (int nchks, unsigned short *chks,
400	int nregs, unsigned short *regs)
401	{
402	struct opdep *pair;
403	int i;
404	int regind = -1;
405	int chkind = -1;
406
407	if (nregs > 0)
408	regind = insert_deplist (nregs, regs);
409	if (nchks > 0)
410	chkind = insert_deplist (nchks, chks);
411
412	for (i = 0; i < opdeplen; i++)
413	if (opdeps[i]->chk == chkind
414	&& opdeps[i]->reg == regind)
415	return i;
416
417	pair = tmalloc (struct opdep);
418	pair->chk = chkind;
419	pair->reg = regind;
420
421	if (opdeplen == opdeptotlen)
422	{
423	opdeptotlen += 20;
424	opdeps = (struct opdep **)
425	xrealloc (opdeps, sizeof(struct opdep *) opdeptotlen);
426	}
427	opdeps[opdeplen] = pair;
428
429	return opdeplen++;
430	}
431
432	static void
433	mark_used (struct iclass *ic, int clear_terminals)
434	{
435	int i;
436
437	ic->orphan = 0;
438	if (clear_terminals)
439	ic->terminal_resolved = 1;
440
441	for (i = 0; i < ic->nsubs; i++)
442	mark_used (ics[ic->subs[i]], clear_terminals);
443
444	for (i = 0; i < ic->nxsubs; i++)
445	mark_used (ics[ic->xsubs[i]], clear_terminals);
446	}
447
448	/* Look up an instruction class; if CREATE make a new one if none found;
449	returns the index into the insn class array. */
450	static int
451	fetch_insn_class (const char *full_name, int create)
452	{
453	char *name;
454	char *notestr;
455	char *xsect;
456	char *comment;
457	int i, note = 0;
458	int ind;
459	int is_class = 0;
460
461	if (strncmp (full_name, "IC:", 3) == 0)
462	{
463	name = xstrdup (full_name + 3);
464	is_class = 1;
465	}
466	else
467	name = xstrdup (full_name);
468
469	if ((xsect = strchr(name, '\\')) != NULL)
470	is_class = 1;
471	if ((comment = strchr(name, '[')) != NULL)
472	is_class = 1;
473	if ((notestr = strchr(name, '+')) != NULL)
474	is_class = 1;
475
476	/* If it is a composite class, then ignore comments and notes that come after
477	the '\\', since they don't apply to the part we are decoding now. */
478	if (xsect)
479	{
480	if (comment > xsect)
481	comment = 0;
482	if (notestr > xsect)
483	notestr = 0;
484	}
485
486	if (notestr)
487	{
488	char *nextnotestr;
489
490	note = atoi (notestr + 1);
491	if ((nextnotestr = strchr (notestr + 1, '+')) != NULL)
492	{
493	if (strcmp (notestr, "+1+13") == 0)
494	note = 13;
495	else if (!xsect \|\| nextnotestr < xsect)
496	warn (_("multiple note %s not handled\n"), notestr);
497	}
498	}
499
500	/* If it's a composite class, leave the notes and comments in place so that
501	we have a unique name for the composite class. Otherwise, we remove
502	them. */
503	if (!xsect)
504	{
505	if (notestr)
506	*notestr = 0;
507	if (comment)
508	*comment = 0;
509	}
510
511	for (i = 0; i < iclen; i++)
512	if (strcmp (name, ics[i]->name) == 0
513	&& ((comment == NULL && ics[i]->comment == NULL)
514	\|\| (comment != NULL && ics[i]->comment != NULL
515	&& strncmp (ics[i]->comment, comment,
516	strlen (ics[i]->comment)) == 0))
517	&& note == ics[i]->note)
518	return i;
519
520	if (!create)
521	return -1;
522
523	/* Doesn't exist, so make a new one. */
524	if (iclen == ictotlen)
525	{
526	ictotlen += 20;
527	ics = (struct iclass **)
528	xrealloc (ics, (ictotlen) * sizeof (struct iclass *));
529	}
530
531	ind = iclen++;
532	ics[ind] = tmalloc (struct iclass);
533	memset ((void *)ics[ind], 0, sizeof (struct iclass));
534	ics[ind]->name = xstrdup (name);
535	ics[ind]->is_class = is_class;
536	ics[ind]->orphan = 1;
537
538	if (comment)
539	{
540	ics[ind]->comment = xstrdup (comment + 1);
541	ics[ind]->comment[strlen (ics[ind]->comment)-1] = 0;
542	}
543
544	if (notestr)
545	ics[ind]->note = note;
546
547	/* If it's a composite class, there's a comment or note, look for an
548	existing class or terminal with the same name. */
549	if ((xsect \|\| comment \|\| notestr) && is_class)
550	{
551	/* First, populate with the class we're based on. */
552	char *subname = name;
553
554	if (xsect)
555	*xsect = 0;
556	else if (comment)
557	*comment = 0;
558	else if (notestr)
559	*notestr = 0;
560
561	ics[ind]->nsubs = 1;
562	ics[ind]->subs = tmalloc(int);
563	ics[ind]->subs[0] = fetch_insn_class (subname, 1);;
564	}
565
566	while (xsect)
567	{
568	char *subname = xsect + 1;
569
570	xsect = strchr (subname, '\\');
571	if (xsect)
572	*xsect = 0;
573	ics[ind]->xsubs[ics[ind]->nxsubs] = fetch_insn_class (subname,1);
574	ics[ind]->nxsubs++;
575	}
576	free (name);
577
578	return ind;
579	}
580
581	/* For sorting a class's sub-class list only; make sure classes appear before
582	terminals. */
583	static int
584	sub_compare (const void e1, const void e2)
585	{
586	struct iclass ic1 = ics[(int *)e1];
587	struct iclass ic2 = ics[(int *)e2];
588
589	if (ic1->is_class)
590	{
591	if (!ic2->is_class)
592	return -1;
593	}
594	else if (ic2->is_class)
595	return 1;
596
597	return strcmp (ic1->name, ic2->name);
598	}
599
600	static void
601	load_insn_classes (void)
602	{
603	FILE *fp = fopen ("ia64-ic.tbl", "r");
604	char buf[2048];
605
606	if (fp == NULL)
607	fail (_("can't find ia64-ic.tbl for reading\n"));
608
609	/* Discard first line. */
610	fgets (buf, sizeof(buf), fp);
611
612	while (!feof (fp))
613	{
614	int iclass;
615	char *name;
616	char *tmp;
617
618	if (fgets (buf, sizeof (buf), fp) == NULL)
619	break;
620
621	while (ISSPACE (buf[strlen (buf) - 1]))
622	buf[strlen (buf) - 1] = '\0';
623
624	name = tmp = buf;
625	while (*tmp != ';')
626	{
627	++tmp;
628	if (tmp == buf + sizeof (buf))
629	abort ();
630	}
631	*tmp++ = '\0';
632
633	iclass = fetch_insn_class (name, 1);
634	ics[iclass]->is_class = 1;
635
636	if (strcmp (name, "none") == 0)
637	{
638	ics[iclass]->is_class = 0;
639	ics[iclass]->terminal_resolved = 1;
640	continue;
641	}
642
643	/* For this class, record all sub-classes. */
644	while (*tmp)
645	{
646	char *subname;
647	int sub;
648
649	while (tmp && ISSPACE (tmp))
650	{
651	++tmp;
652	if (tmp == buf + sizeof (buf))
653	abort ();
654	}
655	subname = tmp;
656	while (tmp && tmp != ',')
657	{
658	++tmp;
659	if (tmp == buf + sizeof (buf))
660	abort ();
661	}
662	if (*tmp == ',')
663	*tmp++ = '\0';
664
665	ics[iclass]->subs = (int *)
666	xrealloc ((void *)ics[iclass]->subs,
667	(ics[iclass]->nsubs + 1) * sizeof (int));
668
669	sub = fetch_insn_class (subname, 1);
670	ics[iclass]->subs = (int *)
671	xrealloc (ics[iclass]->subs, (ics[iclass]->nsubs + 1) * sizeof (int));
672	ics[iclass]->subs[ics[iclass]->nsubs++] = sub;
673	}
674
675	/* Make sure classes come before terminals. */
676	qsort ((void *)ics[iclass]->subs,
677	ics[iclass]->nsubs, sizeof(int), sub_compare);
678	}
679	fclose (fp);
680
681	if (debug)
682	printf ("%d classes\n", iclen);
683	}
684
685	/* Extract the insn classes from the given line. */
686	static void
687	parse_resource_users (ref, usersp, nusersp, notesp)
688	const char *ref;
689	int **usersp;
690	int *nusersp;
691	int **notesp;
692	{
693	int c;
694	char *line = xstrdup (ref);
695	char *tmp = line;
696	int users = usersp;
697	int count = *nusersp;
698	int notes = notesp;
699
700	c = *tmp;
701	while (c != 0)
702	{
703	char *notestr;
704	int note;
705	char *xsect;
706	int iclass;
707	int create = 0;
708	char *name;
709
710	while (ISSPACE (*tmp))
711	++tmp;
712	name = tmp;
713	while (tmp && tmp != ',')
714	++tmp;
715	c = *tmp;
716	*tmp++ = '\0';
717
718	xsect = strchr (name, '\\');
719	if ((notestr = strstr (name, "+")) != NULL)
720	{
721	char *nextnotestr;
722
723	note = atoi (notestr + 1);
724	if ((nextnotestr = strchr (notestr + 1, '+')) != NULL)
725	{
726	/* Note 13 always implies note 1. */
727	if (strcmp (notestr, "+1+13") == 0)
728	note = 13;
729	else if (!xsect \|\| nextnotestr < xsect)
730	warn (_("multiple note %s not handled\n"), notestr);
731	}
732	if (!xsect)
733	*notestr = '\0';
734	}
735	else
736	note = 0;
737
738	/* All classes are created when the insn class table is parsed;
739	Individual instructions might not appear until the dependency tables
740	are read. Only create new classes if it's not an insn class,
741	or if it's a composite class (which wouldn't necessarily be in the IC
742	table). */
743	if (strncmp (name, "IC:", 3) != 0 \|\| xsect != NULL)
744	create = 1;
745
746	iclass = fetch_insn_class (name, create);
747	if (iclass != -1)
748	{
749	users = (int *)
750	xrealloc ((void ) users,(count + 1) sizeof (int));
751	notes = (int *)
752	xrealloc ((void ) notes,(count + 1) sizeof (int));
753	notes[count] = note;
754	users[count++] = iclass;
755	mark_used (ics[iclass], 0);
756	}
757	else if (debug)
758	printf("Class %s not found\n", name);
759	}
760	/* Update the return values. */
761	*usersp = users;
762	*nusersp = count;
763	*notesp = notes;
764
765	free (line);
766	}
767
768	static int
769	parse_semantics (char *sem)
770	{
771	if (strcmp (sem, "none") == 0)
772	return IA64_DVS_NONE;
773	else if (strcmp (sem, "implied") == 0)
774	return IA64_DVS_IMPLIED;
775	else if (strcmp (sem, "impliedF") == 0)
776	return IA64_DVS_IMPLIEDF;
777	else if (strcmp (sem, "data") == 0)
778	return IA64_DVS_DATA;
779	else if (strcmp (sem, "instr") == 0)
780	return IA64_DVS_INSTR;
781	else if (strcmp (sem, "specific") == 0)
782	return IA64_DVS_SPECIFIC;
783	else if (strcmp (sem, "stop") == 0)
784	return IA64_DVS_STOP;
785	else
786	return IA64_DVS_OTHER;
787	}
788
789	static void
790	add_dep (const char name, const char chk, const char *reg,
791	int semantics, int mode, char *extra, int flag)
792	{
793	struct rdep *rs;
794
795	rs = insert_resource (name, mode);
796
797	parse_resource_users (chk, &rs->chks, &rs->nchks, &rs->chknotes);
798	parse_resource_users (reg, &rs->regs, &rs->nregs, &rs->regnotes);
799
800	rs->semantics = semantics;
801	rs->extra = extra;
802	rs->waw_special = flag;
803	}
804
805	static void
806	load_depfile (const char *filename, enum ia64_dependency_mode mode)
807	{
808	FILE *fp = fopen (filename, "r");
809	char buf[1024];
810
811	if (fp == NULL)
812	fail (_("can't find %s for reading\n"), filename);
813
814	fgets (buf, sizeof(buf), fp);
815	while (!feof (fp))
816	{
817	char name, tmp;
818	int semantics;
819	char *extra;
820	char regp, chkp;
821
822	if (fgets (buf, sizeof(buf), fp) == NULL)
823	break;
824
825	while (ISSPACE (buf[strlen (buf) - 1]))
826	buf[strlen (buf) - 1] = '\0';
827
828	name = tmp = buf;
829	while (*tmp != ';')
830	++tmp;
831	*tmp++ = '\0';
832
833	while (ISSPACE (*tmp))
834	++tmp;
835	regp = tmp;
836	tmp = strchr (tmp, ';');
837	if (!tmp)
838	abort ();
839	*tmp++ = 0;
840	while (ISSPACE (*tmp))
841	++tmp;
842	chkp = tmp;
843	tmp = strchr (tmp, ';');
844	if (!tmp)
845	abort ();
846	*tmp++ = 0;
847	while (ISSPACE (*tmp))
848	++tmp;
849	semantics = parse_semantics (tmp);
850	extra = semantics == IA64_DVS_OTHER ? xstrdup (tmp) : NULL;
851
852	/* For WAW entries, if the chks and regs differ, we need to enter the
853	entries in both positions so that the tables will be parsed properly,
854	without a lot of extra work. */
855	if (mode == IA64_DV_WAW && strcmp (regp, chkp) != 0)
856	{
857	add_dep (name, chkp, regp, semantics, mode, extra, 0);
858	add_dep (name, regp, chkp, semantics, mode, extra, 1);
859	}
860	else
861	{
862	add_dep (name, chkp, regp, semantics, mode, extra, 0);
863	}
864	}
865	fclose (fp);
866	}
867
868	static void
869	load_dependencies (void)
870	{
871	load_depfile ("ia64-raw.tbl", IA64_DV_RAW);
872	load_depfile ("ia64-waw.tbl", IA64_DV_WAW);
873	load_depfile ("ia64-war.tbl", IA64_DV_WAR);
874
875	if (debug)
876	printf ("%d RAW/WAW/WAR dependencies\n", rdepslen);
877	}
878
879	/* Is the given operand an indirect register file operand? */
880	static int
881	irf_operand (int op, const char *field)
882	{
883	if (!field)
884	{
885	return op == IA64_OPND_RR_R3 \|\| op == IA64_OPND_DBR_R3
886	\|\| op == IA64_OPND_IBR_R3 \|\| op == IA64_OPND_PKR_R3
887	\|\| op == IA64_OPND_PMC_R3 \|\| op == IA64_OPND_PMD_R3
888	\|\| op == IA64_OPND_MSR_R3 \|\| op == IA64_OPND_CPUID_R3;
889	}
890	else
891	{
892	return ((op == IA64_OPND_RR_R3 && strstr (field, "rr"))
893	\|\| (op == IA64_OPND_DBR_R3 && strstr (field, "dbr"))
894	\|\| (op == IA64_OPND_IBR_R3 && strstr (field, "ibr"))
895	\|\| (op == IA64_OPND_PKR_R3 && strstr (field, "pkr"))
896	\|\| (op == IA64_OPND_PMC_R3 && strstr (field, "pmc"))
897	\|\| (op == IA64_OPND_PMD_R3 && strstr (field, "pmd"))
898	\|\| (op == IA64_OPND_MSR_R3 && strstr (field, "msr"))
899	\|\| (op == IA64_OPND_CPUID_R3 && strstr (field, "cpuid")));
900	}
901	}
902
903	/* Handle mov_ar, mov_br, mov_cr, mov_indirect, mov_ip, mov_pr, mov_psr, and
904	mov_um insn classes. */
905	static int
906	in_iclass_mov_x (struct ia64_opcode idesc, struct iclass ic,
907	const char format, const char field)
908	{
909	int plain_mov = strcmp (idesc->name, "mov") == 0;
910
911	if (!format)
912	return 0;
913
914	switch (ic->name[4])
915	{
916	default:
917	abort ();
918	case 'a':
919	{
920	int i = strcmp (idesc->name, "mov.i") == 0;
921	int m = strcmp (idesc->name, "mov.m") == 0;
922	int i2627 = i && idesc->operands[0] == IA64_OPND_AR3;
923	int i28 = i && idesc->operands[1] == IA64_OPND_AR3;
924	int m2930 = m && idesc->operands[0] == IA64_OPND_AR3;
925	int m31 = m && idesc->operands[1] == IA64_OPND_AR3;
926	int pseudo0 = plain_mov && idesc->operands[1] == IA64_OPND_AR3;
927	int pseudo1 = plain_mov && idesc->operands[0] == IA64_OPND_AR3;
928
929	/* IC:mov ar */
930	if (i2627)
931	return strstr (format, "I26") \|\| strstr (format, "I27");
932	if (i28)
933	return strstr (format, "I28") != NULL;
934	if (m2930)
935	return strstr (format, "M29") \|\| strstr (format, "M30");
936	if (m31)
937	return strstr (format, "M31") != NULL;
938	if (pseudo0 \|\| pseudo1)
939	return 1;
940	}
941	break;
942	case 'b':
943	{
944	int i21 = idesc->operands[0] == IA64_OPND_B1;
945	int i22 = plain_mov && idesc->operands[1] == IA64_OPND_B2;
946	if (i22)
947	return strstr (format, "I22") != NULL;
948	if (i21)
949	return strstr (format, "I21") != NULL;
950	}
951	break;
952	case 'c':
953	{
954	int m32 = plain_mov && idesc->operands[0] == IA64_OPND_CR3;
955	int m33 = plain_mov && idesc->operands[1] == IA64_OPND_CR3;
956	if (m32)
957	return strstr (format, "M32") != NULL;
958	if (m33)
959	return strstr (format, "M33") != NULL;
960	}
961	break;
962	case 'i':
963	if (ic->name[5] == 'n')
964	{
965	int m42 = plain_mov && irf_operand (idesc->operands[0], field);
966	int m43 = plain_mov && irf_operand (idesc->operands[1], field);
967	if (m42)
968	return strstr (format, "M42") != NULL;
969	if (m43)
970	return strstr (format, "M43") != NULL;
971	}
972	else if (ic->name[5] == 'p')
973	{
974	return idesc->operands[1] == IA64_OPND_IP;
975	}
976	else
977	abort ();
978	break;
979	case 'p':
980	if (ic->name[5] == 'r')
981	{
982	int i25 = plain_mov && idesc->operands[1] == IA64_OPND_PR;
983	int i23 = plain_mov && idesc->operands[0] == IA64_OPND_PR;
984	int i24 = plain_mov && idesc->operands[0] == IA64_OPND_PR_ROT;
985	if (i23)
986	return strstr (format, "I23") != NULL;
987	if (i24)
988	return strstr (format, "I24") != NULL;
989	if (i25)
990	return strstr (format, "I25") != NULL;
991	}
992	else if (ic->name[5] == 's')
993	{
994	int m35 = plain_mov && idesc->operands[0] == IA64_OPND_PSR_L;
995	int m36 = plain_mov && idesc->operands[1] == IA64_OPND_PSR;
996	if (m35)
997	return strstr (format, "M35") != NULL;
998	if (m36)
999	return strstr (format, "M36") != NULL;
1000	}
1001	else
1002	abort ();
1003	break;
1004	case 'u':
1005	{
1006	int m35 = plain_mov && idesc->operands[0] == IA64_OPND_PSR_UM;
1007	int m36 = plain_mov && idesc->operands[1] == IA64_OPND_PSR_UM;
1008	if (m35)
1009	return strstr (format, "M35") != NULL;
1010	if (m36)
1011	return strstr (format, "M36") != NULL;
1012	}
1013	break;
1014	}
1015	return 0;
1016	}
1017
1018	/* Is the given opcode in the given insn class? */
1019	static int
1020	in_iclass (struct ia64_opcode idesc, struct iclass ic,
1021	const char format, const char field, int *notep)
1022	{
1023	int i;
1024	int resolved = 0;
1025
1026	if (ic->comment)
1027	{
1028	if (!strncmp (ic->comment, "Format", 6))
1029	{
1030	/* Assume that the first format seen is the most restrictive, and
1031	only keep a later one if it looks like it's more restrictive. */
1032	if (format)
1033	{
1034	if (strlen (ic->comment) < strlen (format))
1035	{
1036	warn (_("most recent format '%s'\nappears more restrictive than '%s'\n"),
1037	ic->comment, format);
1038	format = ic->comment;
1039	}
1040	}
1041	else
1042	format = ic->comment;
1043	}
1044	else if (!strncmp (ic->comment, "Field", 5))
1045	{
1046	if (field)
1047	warn (_("overlapping field %s->%s\n"),
1048	ic->comment, field);
1049	field = ic->comment;
1050	}
1051	}
1052
1053	/* An insn class matches anything that is the same followed by completers,
1054	except when the absence and presence of completers constitutes different
1055	instructions. */
1056	if (ic->nsubs == 0 && ic->nxsubs == 0)
1057	{
1058	int is_mov = strncmp (idesc->name, "mov", 3) == 0;
1059	int plain_mov = strcmp (idesc->name, "mov") == 0;
1060	int len = strlen(ic->name);
1061
1062	resolved = ((strncmp (ic->name, idesc->name, len) == 0)
1063	&& (idesc->name[len] == '\0'
1064	\|\| idesc->name[len] == '.'));
1065
1066	/* All break, nop, and hint variations must match exactly. */
1067	if (resolved &&
1068	(strcmp (ic->name, "break") == 0
1069	\|\| strcmp (ic->name, "nop") == 0
1070	\|\| strcmp (ic->name, "hint") == 0))
1071	resolved = strcmp (ic->name, idesc->name) == 0;
1072
1073	/* Assume restrictions in the FORMAT/FIELD negate resolution,
1074	unless specifically allowed by clauses in this block. */
1075	if (resolved && field)
1076	{
1077	/* Check Field(sf)==sN against opcode sN. */
1078	if (strstr(field, "(sf)==") != NULL)
1079	{
1080	char *sf;
1081
1082	if ((sf = strstr (idesc->name, ".s")) != 0)
1083	resolved = strcmp (sf + 1, strstr (field, "==") + 2) == 0;
1084	}
1085	/* Check Field(lftype)==XXX. */
1086	else if (strstr (field, "(lftype)") != NULL)
1087	{
1088	if (strstr (idesc->name, "fault") != NULL)
1089	resolved = strstr (field, "fault") != NULL;
1090	else
1091	resolved = strstr (field, "fault") == NULL;
1092	}
1093	/* Handle Field(ctype)==XXX. */
1094	else if (strstr (field, "(ctype)") != NULL)
1095	{
1096	if (strstr (idesc->name, "or.andcm"))
1097	resolved = strstr (field, "or.andcm") != NULL;
1098	else if (strstr (idesc->name, "and.orcm"))
1099	resolved = strstr (field, "and.orcm") != NULL;
1100	else if (strstr (idesc->name, "orcm"))
1101	resolved = strstr (field, "or orcm") != NULL;
1102	else if (strstr (idesc->name, "or"))
1103	resolved = strstr (field, "or orcm") != NULL;
1104	else if (strstr (idesc->name, "andcm"))
1105	resolved = strstr (field, "and andcm") != NULL;
1106	else if (strstr (idesc->name, "and"))
1107	resolved = strstr (field, "and andcm") != NULL;
1108	else if (strstr (idesc->name, "unc"))
1109	resolved = strstr (field, "unc") != NULL;
1110	else
1111	resolved = strcmp (field, "Field(ctype)==") == 0;
1112	}
1113	}
1114
1115	if (resolved && format)
1116	{
1117	if (strncmp (idesc->name, "dep", 3) == 0
1118	&& strstr (format, "I13") != NULL)
1119	resolved = idesc->operands[1] == IA64_OPND_IMM8;
1120	else if (strncmp (idesc->name, "chk", 3) == 0
1121	&& strstr (format, "M21") != NULL)
1122	resolved = idesc->operands[0] == IA64_OPND_F2;
1123	else if (strncmp (idesc->name, "lfetch", 6) == 0)
1124	resolved = (strstr (format, "M14 M15") != NULL
1125	&& (idesc->operands[1] == IA64_OPND_R2
1126	\|\| idesc->operands[1] == IA64_OPND_IMM9b));
1127	else if (strncmp (idesc->name, "br.call", 7) == 0
1128	&& strstr (format, "B5") != NULL)
1129	resolved = idesc->operands[1] == IA64_OPND_B2;
1130	else if (strncmp (idesc->name, "br.call", 7) == 0
1131	&& strstr (format, "B3") != NULL)
1132	resolved = idesc->operands[1] == IA64_OPND_TGT25c;
1133	else if (strncmp (idesc->name, "brp", 3) == 0
1134	&& strstr (format, "B7") != NULL)
1135	resolved = idesc->operands[0] == IA64_OPND_B2;
1136	else if (strcmp (ic->name, "invala") == 0)
1137	resolved = strcmp (idesc->name, ic->name) == 0;
1138	else if (strncmp (idesc->name, "st", 2) == 0
1139	&& strstr (format, "M5") != NULL)
1140	resolved = idesc->flags & IA64_OPCODE_POSTINC;
1141	else
1142	resolved = 0;
1143	}
1144
1145	/* Misc brl variations ('.cond' is optional);
1146	plain brl matches brl.cond. */
1147	if (!resolved
1148	&& (strcmp (idesc->name, "brl") == 0
1149	\|\| strncmp (idesc->name, "brl.", 4) == 0)
1150	&& strcmp (ic->name, "brl.cond") == 0)
1151	{
1152	resolved = 1;
1153	}
1154
1155	/* Misc br variations ('.cond' is optional). */
1156	if (!resolved
1157	&& (strcmp (idesc->name, "br") == 0
1158	\|\| strncmp (idesc->name, "br.", 3) == 0)
1159	&& strcmp (ic->name, "br.cond") == 0)
1160	{
1161	if (format)
1162	resolved = (strstr (format, "B4") != NULL
1163	&& idesc->operands[0] == IA64_OPND_B2)
1164	\|\| (strstr (format, "B1") != NULL
1165	&& idesc->operands[0] == IA64_OPND_TGT25c);
1166	else
1167	resolved = 1;
1168	}
1169
1170	/* probe variations. */
1171	if (!resolved && strncmp (idesc->name, "probe", 5) == 0)
1172	{
1173	resolved = strcmp (ic->name, "probe") == 0
1174	&& !((strstr (idesc->name, "fault") != NULL)
1175	^ (format && strstr (format, "M40") != NULL));
1176	}
1177
1178	/* mov variations. */
1179	if (!resolved && is_mov)
1180	{
1181	if (plain_mov)
1182	{
1183	/* mov alias for fmerge. */
1184	if (strcmp (ic->name, "fmerge") == 0)
1185	{
1186	resolved = idesc->operands[0] == IA64_OPND_F1
1187	&& idesc->operands[1] == IA64_OPND_F3;
1188	}
1189	/* mov alias for adds (r3 or imm14). */
1190	else if (strcmp (ic->name, "adds") == 0)
1191	{
1192	resolved = (idesc->operands[0] == IA64_OPND_R1
1193	&& (idesc->operands[1] == IA64_OPND_R3
1194	\|\| (idesc->operands[1] == IA64_OPND_IMM14)));
1195	}
1196	/* mov alias for addl. */
1197	else if (strcmp (ic->name, "addl") == 0)
1198	{
1199	resolved = idesc->operands[0] == IA64_OPND_R1
1200	&& idesc->operands[1] == IA64_OPND_IMM22;
1201	}
1202	}
1203
1204	/* Some variants of mov and mov.[im]. */
1205	if (!resolved && strncmp (ic->name, "mov_", 4) == 0)
1206	resolved = in_iclass_mov_x (idesc, ic, format, field);
1207	}
1208
1209	/* Keep track of this so we can flag any insn classes which aren't
1210	mapped onto at least one real insn. */
1211	if (resolved)
1212	ic->terminal_resolved = 1;
1213	}
1214	else for (i = 0; i < ic->nsubs; i++)
1215	{
1216	if (in_iclass (idesc, ics[ic->subs[i]], format, field, notep))
1217	{
1218	int j;
1219
1220	for (j = 0; j < ic->nxsubs; j++)
1221	if (in_iclass (idesc, ics[ic->xsubs[j]], NULL, NULL, NULL))
1222	return 0;
1223
1224	if (debug > 1)
1225	printf ("%s is in IC %s\n", idesc->name, ic->name);
1226
1227	resolved = 1;
1228	break;
1229	}
1230	}
1231
1232	/* If it's in this IC, add the IC note (if any) to the insn. */
1233	if (resolved)
1234	{
1235	if (ic->note && notep)
1236	{
1237	if (notep && notep != ic->note)
1238	warn (_("overwriting note %d with note %d (IC:%s)\n"),
1239	*notep, ic->note, ic->name);
1240
1241	*notep = ic->note;
1242	}
1243	}
1244
1245	return resolved;
1246	}
1247
1248
1249
1250	static int
1251	lookup_regindex (const char *name, int specifier)
1252	{
1253	switch (specifier)
1254	{
1255	case IA64_RS_ARX:
1256	if (strstr (name, "[RSC]"))
1257	return 16;
1258	if (strstr (name, "[BSP]"))
1259	return 17;
1260	else if (strstr (name, "[BSPSTORE]"))
1261	return 18;
1262	else if (strstr (name, "[RNAT]"))
1263	return 19;
1264	else if (strstr (name, "[FCR]"))
1265	return 21;
1266	else if (strstr (name, "[EFLAG]"))
1267	return 24;
1268	else if (strstr (name, "[CSD]"))
1269	return 25;
1270	else if (strstr (name, "[SSD]"))
1271	return 26;
1272	else if (strstr (name, "[CFLG]"))
1273	return 27;
1274	else if (strstr (name, "[FSR]"))
1275	return 28;
1276	else if (strstr (name, "[FIR]"))
1277	return 29;
1278	else if (strstr (name, "[FDR]"))
1279	return 30;
1280	else if (strstr (name, "[CCV]"))
1281	return 32;
1282	else if (strstr (name, "[ITC]"))
1283	return 44;
1284	else if (strstr (name, "[PFS]"))
1285	return 64;
1286	else if (strstr (name, "[LC]"))
1287	return 65;
1288	else if (strstr (name, "[EC]"))
1289	return 66;
1290	abort ();
1291	case IA64_RS_CRX:
1292	if (strstr (name, "[DCR]"))
1293	return 0;
1294	else if (strstr (name, "[ITM]"))
1295	return 1;
1296	else if (strstr (name, "[IVA]"))
1297	return 2;
1298	else if (strstr (name, "[PTA]"))
1299	return 8;
1300	else if (strstr (name, "[GPTA]"))
1301	return 9;
1302	else if (strstr (name, "[IPSR]"))
1303	return 16;
1304	else if (strstr (name, "[ISR]"))
1305	return 17;
1306	else if (strstr (name, "[IIP]"))
1307	return 19;
1308	else if (strstr (name, "[IFA]"))
1309	return 20;
1310	else if (strstr (name, "[ITIR]"))
1311	return 21;
1312	else if (strstr (name, "[IIPA]"))
1313	return 22;
1314	else if (strstr (name, "[IFS]"))
1315	return 23;
1316	else if (strstr (name, "[IIM]"))
1317	return 24;
1318	else if (strstr (name, "[IHA]"))
1319	return 25;
1320	else if (strstr (name, "[LID]"))
1321	return 64;
1322	else if (strstr (name, "[IVR]"))
1323	return 65;
1324	else if (strstr (name, "[TPR]"))
1325	return 66;
1326	else if (strstr (name, "[EOI]"))
1327	return 67;
1328	else if (strstr (name, "[ITV]"))
1329	return 72;
1330	else if (strstr (name, "[PMV]"))
1331	return 73;
1332	else if (strstr (name, "[CMCV]"))
1333	return 74;
1334	abort ();
1335	case IA64_RS_PSR:
1336	if (strstr (name, ".be"))
1337	return 1;
1338	else if (strstr (name, ".up"))
1339	return 2;
1340	else if (strstr (name, ".ac"))
1341	return 3;
1342	else if (strstr (name, ".mfl"))
1343	return 4;
1344	else if (strstr (name, ".mfh"))
1345	return 5;
1346	else if (strstr (name, ".ic"))
1347	return 13;
1348	else if (strstr (name, ".i"))
1349	return 14;
1350	else if (strstr (name, ".pk"))
1351	return 15;
1352	else if (strstr (name, ".dt"))
1353	return 17;
1354	else if (strstr (name, ".dfl"))
1355	return 18;
1356	else if (strstr (name, ".dfh"))
1357	return 19;
1358	else if (strstr (name, ".sp"))
1359	return 20;
1360	else if (strstr (name, ".pp"))
1361	return 21;
1362	else if (strstr (name, ".di"))
1363	return 22;
1364	else if (strstr (name, ".si"))
1365	return 23;
1366	else if (strstr (name, ".db"))
1367	return 24;
1368	else if (strstr (name, ".lp"))
1369	return 25;
1370	else if (strstr (name, ".tb"))
1371	return 26;
1372	else if (strstr (name, ".rt"))
1373	return 27;
1374	else if (strstr (name, ".cpl"))
1375	return 32;
1376	else if (strstr (name, ".rs"))
1377	return 34;
1378	else if (strstr (name, ".mc"))
1379	return 35;
1380	else if (strstr (name, ".it"))
1381	return 36;
1382	else if (strstr (name, ".id"))
1383	return 37;
1384	else if (strstr (name, ".da"))
1385	return 38;
1386	else if (strstr (name, ".dd"))
1387	return 39;
1388	else if (strstr (name, ".ss"))
1389	return 40;
1390	else if (strstr (name, ".ri"))
1391	return 41;
1392	else if (strstr (name, ".ed"))
1393	return 43;
1394	else if (strstr (name, ".bn"))
1395	return 44;
1396	else if (strstr (name, ".ia"))
1397	return 45;
1398	else
1399	abort ();
1400	default:
1401	break;
1402	}
1403	return REG_NONE;
1404	}
1405
1406	static int
1407	lookup_specifier (const char *name)
1408	{
1409	if (strchr (name, '%'))
1410	{
1411	if (strstr (name, "AR[K%]") != NULL)
1412	return IA64_RS_AR_K;
1413	if (strstr (name, "AR[UNAT]") != NULL)
1414	return IA64_RS_AR_UNAT;
1415	if (strstr (name, "AR%, % in 8") != NULL)
1416	return IA64_RS_AR;
1417	if (strstr (name, "AR%, % in 48") != NULL)
1418	return IA64_RS_ARb;
1419	if (strstr (name, "BR%") != NULL)
1420	return IA64_RS_BR;
1421	if (strstr (name, "CR[IRR%]") != NULL)
1422	return IA64_RS_CR_IRR;
1423	if (strstr (name, "CR[LRR%]") != NULL)
1424	return IA64_RS_CR_LRR;
1425	if (strstr (name, "CR%") != NULL)
1426	return IA64_RS_CR;
1427	if (strstr (name, "FR%, % in 0") != NULL)
1428	return IA64_RS_FR;
1429	if (strstr (name, "FR%, % in 2") != NULL)
1430	return IA64_RS_FRb;
1431	if (strstr (name, "GR%") != NULL)
1432	return IA64_RS_GR;
1433	if (strstr (name, "PR%, % in 1 ") != NULL)
1434	return IA64_RS_PR;
1435	if (strstr (name, "PR%, % in 16 ") != NULL)
1436	return IA64_RS_PRr;
1437
1438	warn (_("don't know how to specify %% dependency %s\n"),
1439	name);
1440	}
1441	else if (strchr (name, '#'))
1442	{
1443	if (strstr (name, "CPUID#") != NULL)
1444	return IA64_RS_CPUID;
1445	if (strstr (name, "DBR#") != NULL)
1446	return IA64_RS_DBR;
1447	if (strstr (name, "IBR#") != NULL)
1448	return IA64_RS_IBR;
1449	if (strstr (name, "MSR#") != NULL)
1450	return IA64_RS_MSR;
1451	if (strstr (name, "PKR#") != NULL)
1452	return IA64_RS_PKR;
1453	if (strstr (name, "PMC#") != NULL)
1454	return IA64_RS_PMC;
1455	if (strstr (name, "PMD#") != NULL)
1456	return IA64_RS_PMD;
1457	if (strstr (name, "RR#") != NULL)
1458	return IA64_RS_RR;
1459
1460	warn (_("Don't know how to specify # dependency %s\n"),
1461	name);
1462	}
1463	else if (strncmp (name, "AR[FPSR]", 8) == 0)
1464	return IA64_RS_AR_FPSR;
1465	else if (strncmp (name, "AR[", 3) == 0)
1466	return IA64_RS_ARX;
1467	else if (strncmp (name, "CR[", 3) == 0)
1468	return IA64_RS_CRX;
1469	else if (strncmp (name, "PSR.", 4) == 0)
1470	return IA64_RS_PSR;
1471	else if (strcmp (name, "InService*") == 0)
1472	return IA64_RS_INSERVICE;
1473	else if (strcmp (name, "GR0") == 0)
1474	return IA64_RS_GR0;
1475	else if (strcmp (name, "CFM") == 0)
1476	return IA64_RS_CFM;
1477	else if (strcmp (name, "PR63") == 0)
1478	return IA64_RS_PR63;
1479	else if (strcmp (name, "RSE") == 0)
1480	return IA64_RS_RSE;
1481
1482	return IA64_RS_ANY;
1483	}
1484
1485	static void
1486	print_dependency_table ()
1487	{
1488	int i, j;
1489
1490	if (debug)
1491	{
1492	for (i=0;i < iclen;i++)
1493	{
1494	if (ics[i]->is_class)
1495	{
1496	if (!ics[i]->nsubs)
1497	{
1498	if (ics[i]->comment)
1499	warn (_("IC:%s [%s] has no terminals or sub-classes\n"),
1500	ics[i]->name, ics[i]->comment);
1501	else
1502	warn (_("IC:%s has no terminals or sub-classes\n"),
1503	ics[i]->name);
1504	}
1505	}
1506	else
1507	{
1508	if (!ics[i]->terminal_resolved && !ics[i]->orphan)
1509	{
1510	if (ics[i]->comment)
1511	warn (_("no insns mapped directly to terminal IC %s [%s]"),
1512	ics[i]->name, ics[i]->comment);
1513	else
1514	warn (_("no insns mapped directly to terminal IC %s\n"),
1515	ics[i]->name);
1516	}
1517	}
1518	}
1519
1520	for (i = 0; i < iclen; i++)
1521	{
1522	if (ics[i]->orphan)
1523	{
1524	mark_used (ics[i], 1);
1525	warn (_("class %s is defined but not used\n"),
1526	ics[i]->name);
1527	}
1528	}
1529
1530	if (debug > 1)
1531	for (i = 0; i < rdepslen; i++)
1532	{
1533	static const char *mode_str[] = { "RAW", "WAW", "WAR" };
1534
1535	if (rdeps[i]->total_chks == 0)
1536	warn (_("Warning: rsrc %s (%s) has no chks%s\n"),
1537	rdeps[i]->name, mode_str[rdeps[i]->mode],
1538	rdeps[i]->total_regs ? "" : " or regs");
1539	else if (rdeps[i]->total_regs == 0)
1540	warn (_("rsrc %s (%s) has no regs\n"),
1541	rdeps[i]->name, mode_str[rdeps[i]->mode]);
1542	}
1543	}
1544
1545	/* The dependencies themselves. */
1546	printf ("static const struct ia64_dependency\ndependencies[] = {\n");
1547	for (i = 0; i < rdepslen; i++)
1548	{
1549	/* '%', '#', AR[], CR[], or PSR. indicates we need to specify the actual
1550	resource used. */
1551	int specifier = lookup_specifier (rdeps[i]->name);
1552	int regindex = lookup_regindex (rdeps[i]->name, specifier);
1553
1554	printf (" { \"%s\", %d, %d, %d, %d, ",
1555	rdeps[i]->name, specifier,
1556	(int)rdeps[i]->mode, (int)rdeps[i]->semantics, regindex);
1557	if (rdeps[i]->semantics == IA64_DVS_OTHER)
1558	printf ("\"%s\", ", rdeps[i]->extra);
1559	else
1560	printf ("NULL, ");
1561	printf("},\n");
1562	}
1563	printf ("};\n\n");
1564
1565	/* And dependency lists. */
1566	for (i=0;i < dlistlen;i++)
1567	{
1568	int len = 2;
1569	printf ("static const short dep%d[] = {\n ", i);
1570	for (j=0;j < dlists[i]->len; j++)
1571	{
1572	len += printf ("%d, ", dlists[i]->deps[j]);
1573	if (len > 75)
1574	{
1575	printf("\n ");
1576	len = 2;
1577	}
1578	}
1579	printf ("\n};\n\n");
1580	}
1581
1582	/* And opcode dependency list. */
1583	printf ("#define NELS(X) (sizeof(X)/sizeof(X[0]))\n");
1584	printf ("static const struct ia64_opcode_dependency\n");
1585	printf ("op_dependencies[] = {\n");
1586	for (i = 0; i < opdeplen; i++)
1587	{
1588	printf (" { ");
1589	if (opdeps[i]->chk == -1)
1590	printf ("0, NULL, ");
1591	else
1592	printf ("NELS(dep%d), dep%d, ", opdeps[i]->chk, opdeps[i]->chk);
1593	if (opdeps[i]->reg == -1)
1594	printf ("0, NULL, ");
1595	else
1596	printf ("NELS(dep%d), dep%d, ", opdeps[i]->reg, opdeps[i]->reg);
1597	printf ("},\n");
1598	}
1599	printf ("};\n\n");
1600	}
1601
1602
1603
1604	/* Add STR to the string table. */
1605	static struct string_entry *
1606	insert_string (char *str)
1607	{
1608	int start = 0, end = strtablen;
1609	int i, x;
1610
1611	if (strtablen == strtabtotlen)
1612	{
1613	strtabtotlen += 20;
1614	string_table = (struct string_entry **)
1615	xrealloc (string_table,
1616	sizeof (struct string_entry *) strtabtotlen);
1617	}
1618
1619	if (strtablen == 0)
1620	{
1621	strtablen = 1;
1622	string_table[0] = tmalloc (struct string_entry);
1623	string_table[0]->s = xstrdup (str);
1624	string_table[0]->num = 0;
1625	return string_table[0];
1626	}
1627
1628	if (strcmp (str, string_table[strtablen - 1]->s) > 0)
1629	i = end;
1630	else if (strcmp (str, string_table[0]->s) < 0)
1631	i = 0;
1632	else
1633	{
1634	while (1)
1635	{
1636	int c;
1637
1638	i = (start + end) / 2;
1639	c = strcmp (str, string_table[i]->s);
1640
1641	if (c < 0)
1642	end = i - 1;
1643	else if (c == 0)
1644	return string_table[i];
1645	else
1646	start = i + 1;
1647
1648	if (start > end)
1649	break;
1650	}
1651	}
1652
1653	for (; i > 0 && i < strtablen; i--)
1654	if (strcmp (str, string_table[i - 1]->s) > 0)
1655	break;
1656
1657	for (; i < strtablen; i++)
1658	if (strcmp (str, string_table[i]->s) < 0)
1659	break;
1660
1661	for (x = strtablen - 1; x >= i; x--)
1662	{
1663	string_table[x + 1] = string_table[x];
1664	string_table[x + 1]->num = x + 1;
1665	}
1666
1667	string_table[i] = tmalloc (struct string_entry);
1668	string_table[i]->s = xstrdup (str);
1669	string_table[i]->num = i;
1670	strtablen++;
1671
1672	return string_table[i];
1673	}
1674
1675
1676	static struct bittree *
1677	make_bittree_entry (void)
1678	{
1679	struct bittree *res = tmalloc (struct bittree);
1680
1681	res->disent = NULL;
1682	res->bits[0] = NULL;
1683	res->bits[1] = NULL;
1684	res->bits[2] = NULL;
1685	res->skip_flag = 0;
1686	res->bits_to_skip = 0;
1687	return res;
1688	}
1689
1690
1691
1692	static struct disent *
1693	add_dis_table_ent (which, insn, order, completer_index)
1694	struct disent *which;
1695	int insn;
1696	int order;
1697	int completer_index;
1698	{
1699	int ci = 0;
1700	struct disent *ent;
1701
1702	if (which != NULL)
1703	{
1704	ent = which;
1705
1706	ent->nextcnt++;
1707	while (ent->nexte != NULL)
1708	ent = ent->nexte;
1709
1710	ent = (ent->nexte = tmalloc (struct disent));
1711	}
1712	else
1713	{
1714	ent = tmalloc (struct disent);
1715	ent->next_ent = disinsntable;
1716	disinsntable = ent;
1717	which = ent;
1718	}
1719	ent->nextcnt = 0;
1720	ent->nexte = NULL;
1721	ent->insn = insn;
1722	ent->priority = order;
1723
1724	while (completer_index != 1)
1725	{
1726	ci = (ci << 1) \| (completer_index & 1);
1727	completer_index >>= 1;
1728	}
1729	ent->completer_index = ci;
1730	return which;
1731	}
1732
1733
1734	static void
1735	finish_distable ()
1736	{
1737	struct disent *ent = disinsntable;
1738	struct disent *prev = ent;
1739
1740	ent->ournum = 32768;
1741	while ((ent = ent->next_ent) != NULL)
1742	{
1743	ent->ournum = prev->ournum + prev->nextcnt + 1;
1744	prev = ent;
1745	}
1746	}
1747
1748
1749	static void
1750	insert_bit_table_ent (curr_ent, bit, opcode, mask,
1751	opcodenum, order, completer_index)
1752	struct bittree *curr_ent;
1753	int bit;
1754	ia64_insn opcode;
1755	ia64_insn mask;
1756	int opcodenum;
1757	int order;
1758	int completer_index;
1759	{
1760	ia64_insn m;
1761	int b;
1762	struct bittree *next;
1763
1764	if (bit == -1)
1765	{
1766	struct disent *nent = add_dis_table_ent (curr_ent->disent,
1767	opcodenum, order,
1768	completer_index);
1769	curr_ent->disent = nent;
1770	return;
1771	}
1772
1773	m = ((ia64_insn) 1) << bit;
1774
1775	if (mask & m)
1776	b = (opcode & m) ? 1 : 0;
1777	else
1778	b = 2;
1779
1780	next = curr_ent->bits[b];
1781	if (next == NULL)
1782	{
1783	next = make_bittree_entry ();
1784	curr_ent->bits[b] = next;
1785	}
1786	insert_bit_table_ent (next, bit - 1, opcode, mask, opcodenum, order,
1787	completer_index);
1788	}
1789
1790
1791	static void
1792	add_dis_entry (first, opcode, mask, opcodenum, ent, completer_index)
1793	struct bittree *first;
1794	ia64_insn opcode;
1795	ia64_insn mask;
1796	int opcodenum;
1797	struct completer_entry *ent;
1798	int completer_index;
1799	{
1800	if (completer_index & (1 << 20))
1801	abort ();
1802
1803	while (ent != NULL)
1804	{
1805	ia64_insn newopcode = (opcode & (~ ent->mask)) \| ent->bits;
1806	add_dis_entry (first, newopcode, mask, opcodenum, ent->addl_entries,
1807	(completer_index << 1) \| 1);
1808
1809	if (ent->is_terminal)
1810	{
1811	insert_bit_table_ent (bittree, 40, newopcode, mask,
1812	opcodenum, opcode_count - ent->order - 1,
1813	(completer_index << 1) \| 1);
1814	}
1815	completer_index <<= 1;
1816	ent = ent->alternative;
1817	}
1818	}
1819
1820
1821	/* This optimization pass combines multiple "don't care" nodes. */
1822	static void
1823	compact_distree (ent)
1824	struct bittree *ent;
1825	{
1826	#define IS_SKIP(ent) \
1827	((ent->bits[2] !=NULL) \
1828	&& (ent->bits[0] == NULL && ent->bits[1] == NULL && ent->skip_flag == 0))
1829
1830	int bitcnt = 0;
1831	struct bittree *nent = ent;
1832	int x;
1833
1834	while (IS_SKIP (nent))
1835	{
1836	bitcnt++;
1837	nent = nent->bits[2];
1838	}
1839
1840	if (bitcnt)
1841	{
1842	struct bittree *next = ent->bits[2];
1843
1844	ent->bits[0] = nent->bits[0];
1845	ent->bits[1] = nent->bits[1];
1846	ent->bits[2] = nent->bits[2];
1847	ent->disent = nent->disent;
1848	ent->skip_flag = 1;
1849	ent->bits_to_skip = bitcnt;
1850	while (next != nent)
1851	{
1852	struct bittree *b = next;
1853	next = next->bits[2];
1854	free (b);
1855	}
1856	free (nent);
1857	}
1858
1859	for (x = 0; x < 3; x++)
1860	{
1861	struct bittree *i = ent->bits[x];
1862
1863	if (i != NULL)
1864	compact_distree (i);
1865	}
1866	}
1867
1868
1869	static unsigned char *insn_list;
1870	static int insn_list_len = 0;
1871	static int tot_insn_list_len = 0;
1872
1873	/* Generate the disassembler state machine corresponding to the tree
1874	in ENT. */
1875	static void
1876	gen_dis_table (ent)
1877	struct bittree *ent;
1878	{
1879	int x;
1880	int our_offset = insn_list_len;
1881	int bitsused = 5;
1882	int totbits = bitsused;
1883	int needed_bytes;
1884	int zero_count = 0;
1885	int zero_dest = 0; /* Initialize this with 0 to keep gcc quiet... */
1886
1887	/* If this is a terminal entry, there's no point in skipping any
1888	bits. */
1889	if (ent->skip_flag && ent->bits[0] == NULL && ent->bits[1] == NULL &&
1890	ent->bits[2] == NULL)
1891	{
1892	if (ent->disent == NULL)
1893	abort ();
1894	else
1895	ent->skip_flag = 0;
1896	}
1897
1898	/* Calculate the amount of space needed for this entry, or at least
1899	a conservatively large approximation. */
1900	if (ent->skip_flag)
1901	totbits += 5;
1902
1903	for (x = 1; x < 3; x++)
1904	if (ent->bits[x] != NULL)
1905	totbits += 16;
1906
1907	if (ent->disent != NULL)
1908	{
1909	if (ent->bits[2] != NULL)
1910	abort ();
1911
1912	totbits += 16;
1913	}
1914
1915	/* Now allocate the space. */
1916	needed_bytes = (totbits + 7) / 8;
1917	if ((needed_bytes + insn_list_len) > tot_insn_list_len)
1918	{
1919	tot_insn_list_len += 256;
1920	insn_list = (char *) xrealloc (insn_list, tot_insn_list_len);
1921	}
1922	our_offset = insn_list_len;
1923	insn_list_len += needed_bytes;
1924	memset (insn_list + our_offset, 0, needed_bytes);
1925
1926	/* Encode the skip entry by setting bit 6 set in the state op field,
1927	and store the # of bits to skip immediately after. */
1928	if (ent->skip_flag)
1929	{
1930	bitsused += 5;
1931	insn_list[our_offset + 0] \|= 0x40 \| ((ent->bits_to_skip >> 2) & 0xf);
1932	insn_list[our_offset + 1] \|= ((ent->bits_to_skip & 3) << 6);
1933	}
1934
1935	#define IS_ONLY_IFZERO(ENT) \
1936	((ENT)->bits[0] != NULL && (ENT)->bits[1] == NULL && (ENT)->bits[2] == NULL \
1937	&& (ENT)->disent == NULL && (ENT)->skip_flag == 0)
1938
1939	/* Store an "if (bit is zero)" instruction by setting bit 7 in the
1940	state op field. */
1941	if (ent->bits[0] != NULL)
1942	{
1943	struct bittree *nent = ent->bits[0];
1944	zero_count = 0;
1945
1946	insn_list[our_offset] \|= 0x80;
1947
1948	/* We can encode sequences of multiple "if (bit is zero)" tests
1949	by storing the # of zero bits to check in the lower 3 bits of
1950	the instruction. However, this only applies if the state
1951	solely tests for a zero bit. */
1952
1953	if (IS_ONLY_IFZERO (ent))
1954	{
1955	while (IS_ONLY_IFZERO (nent) && zero_count < 7)
1956	{
1957	nent = nent->bits[0];
1958	zero_count++;
1959	}
1960
1961	insn_list[our_offset + 0] \|= zero_count;
1962	}
1963	zero_dest = insn_list_len;
1964	gen_dis_table (nent);
1965	}
1966
1967	/* Now store the remaining tests. We also handle a sole "termination
1968	entry" by storing it as an "any bit" test. */
1969
1970	for (x = 1; x < 3; x++)
1971	{
1972	if (ent->bits[x] != NULL \|\| (x == 2 && ent->disent != NULL))
1973	{
1974	struct bittree *i = ent->bits[x];
1975	int idest;
1976	int currbits = 15;
1977
1978	if (i != NULL)
1979	{
1980	/* If the instruction being branched to only consists of
1981	a termination entry, use the termination entry as the
1982	place to branch to instead. */
1983	if (i->bits[0] == NULL && i->bits[1] == NULL
1984	&& i->bits[2] == NULL && i->disent != NULL)
1985	{
1986	idest = i->disent->ournum;
1987	i = NULL;
1988	}
1989	else
1990	idest = insn_list_len - our_offset;
1991	}
1992	else
1993	idest = ent->disent->ournum;
1994
1995	/* If the destination offset for the if (bit is 1) test is less
1996	than 256 bytes away, we can store it as 8-bits instead of 16;
1997	the instruction has bit 5 set for the 16-bit address, and bit
1998	4 for the 8-bit address. Since we've already allocated 16
1999	bits for the address we need to deallocate the space.
2000
2001	Note that branchings within the table are relative, and
2002	there are no branches that branch past our instruction yet
2003	so we do not need to adjust any other offsets. */
2004	if (x == 1)
2005	{
2006	if (idest <= 256)
2007	{
2008	int start = our_offset + bitsused / 8 + 1;
2009
2010	memmove (insn_list + start,
2011	insn_list + start + 1,
2012	insn_list_len - (start + 1));
2013	currbits = 7;
2014	totbits -= 8;
2015	needed_bytes--;
2016	insn_list_len--;
2017	insn_list[our_offset] \|= 0x10;
2018	idest--;
2019	}
2020	else
2021	insn_list[our_offset] \|= 0x20;
2022	}
2023	else
2024	{
2025	/* An instruction which solely consists of a termination
2026	marker and whose disassembly name index is < 4096
2027	can be stored in 16 bits. The encoding is slightly
2028	odd; the upper 4 bits of the instruction are 0x3, and
2029	bit 3 loses its normal meaning. */
2030
2031	if (ent->bits[0] == NULL && ent->bits[1] == NULL
2032	&& ent->bits[2] == NULL && ent->skip_flag == 0
2033	&& ent->disent != NULL
2034	&& ent->disent->ournum < (32768 + 4096))
2035	{
2036	int start = our_offset + bitsused / 8 + 1;
2037
2038	memmove (insn_list + start,
2039	insn_list + start + 1,
2040	insn_list_len - (start + 1));
2041	currbits = 11;
2042	totbits -= 5;
2043	bitsused--;
2044	needed_bytes--;
2045	insn_list_len--;
2046	insn_list[our_offset] \|= 0x30;
2047	idest &= ~32768;
2048	}
2049	else
2050	insn_list[our_offset] \|= 0x08;
2051	}
2052
2053	if (debug)
2054	{
2055	int id = idest;
2056
2057	if (i == NULL)
2058	id \|= 32768;
2059	else if (! (id & 32768))
2060	id += our_offset;
2061
2062	if (x == 1)
2063	printf ("%d: if (1) goto %d\n", our_offset, id);
2064	else
2065	printf ("%d: try %d\n", our_offset, id);
2066	}
2067
2068	/* Store the address of the entry being branched to. */
2069	while (currbits >= 0)
2070	{
2071	char *byte = insn_list + our_offset + bitsused / 8;
2072
2073	if (idest & (1 << currbits))
2074	*byte \|= (1 << (7 - (bitsused % 8)));
2075
2076	bitsused++;
2077	currbits--;
2078	}
2079
2080	/* Now generate the states for the entry being branched to. */
2081	if (i != NULL)
2082	gen_dis_table (i);
2083	}
2084	}
2085
2086	if (debug)
2087	{
2088	if (ent->skip_flag)
2089	printf ("%d: skipping %d\n", our_offset, ent->bits_to_skip);
2090
2091	if (ent->bits[0] != NULL)
2092	printf ("%d: if (0:%d) goto %d\n", our_offset, zero_count + 1,
2093	zero_dest);
2094	}
2095
2096	if (bitsused != totbits)
2097	abort ();
2098	}
2099
2100
2101	static void
2102	print_dis_table (void)
2103	{
2104	int x;
2105	struct disent *cent = disinsntable;
2106
2107	printf ("static const char dis_table[] = {\n");
2108	for (x = 0; x < insn_list_len; x++)
2109	{
2110	if ((x > 0) && ((x % 12) == 0))
2111	printf ("\n");
2112
2113	printf ("0x%02x, ", insn_list[x]);
2114	}
2115	printf ("\n};\n\n");
2116
2117	printf ("static const struct ia64_dis_names ia64_dis_names[] = {\n");
2118	while (cent != NULL)
2119	{
2120	struct disent *ent = cent;
2121
2122	while (ent != NULL)
2123	{
2124	printf ("{ 0x%x, %d, %d, %d },\n", ent->completer_index,
2125	ent->insn, (ent->nexte != NULL ? 1 : 0),
2126	ent->priority);
2127	ent = ent->nexte;
2128	}
2129	cent = cent->next_ent;
2130	}
2131	printf ("};\n\n");
2132	}
2133
2134
2135	static void
2136	generate_disassembler (void)
2137	{
2138	int i;
2139
2140	bittree = make_bittree_entry ();
2141
2142	for (i = 0; i < otlen; i++)
2143	{
2144	struct main_entry *ptr = ordered_table[i];
2145
2146	if (ptr->opcode->type != IA64_TYPE_DYN)
2147	add_dis_entry (bittree,
2148	ptr->opcode->opcode, ptr->opcode->mask,
2149	ptr->main_index,
2150	ptr->completers, 1);
2151	}
2152
2153	compact_distree (bittree);
2154	finish_distable ();
2155	gen_dis_table (bittree);
2156
2157	print_dis_table ();
2158	}
2159
2160
2161	static void
2162	print_string_table (void)
2163	{
2164	int x;
2165	char lbuf[80], buf[80];
2166	int blen = 0;
2167
2168	printf ("static const char * const ia64_strings[] = {\n");
2169	lbuf[0] = '\0';
2170
2171	for (x = 0; x < strtablen; x++)
2172	{
2173	int len;
2174
2175	if (strlen (string_table[x]->s) > 75)
2176	abort ();
2177
2178	sprintf (buf, " \"%s\",", string_table[x]->s);
2179	len = strlen (buf);
2180
2181	if ((blen + len) > 75)
2182	{
2183	printf (" %s\n", lbuf);
2184	lbuf[0] = '\0';
2185	blen = 0;
2186	}
2187	strcat (lbuf, buf);
2188	blen += len;
2189	}
2190
2191	if (blen > 0)
2192	printf (" %s\n", lbuf);
2193
2194	printf ("};\n\n");
2195	}
2196
2197
2198	static struct completer_entry **glist;
2199	static int glistlen = 0;
2200	static int glisttotlen = 0;
2201
2202	/* If the completer trees ENT1 and ENT2 are equal, return 1. */
2203
2204	static int
2205	completer_entries_eq (ent1, ent2)
2206	struct completer_entry ent1, ent2;
2207	{
2208	while (ent1 != NULL && ent2 != NULL)
2209	{
2210	if (ent1->name->num != ent2->name->num
2211	\|\| ent1->bits != ent2->bits
2212	\|\| ent1->mask != ent2->mask
2213	\|\| ent1->is_terminal != ent2->is_terminal
2214	\|\| ent1->dependencies != ent2->dependencies
2215	\|\| ent1->order != ent2->order)
2216	return 0;
2217
2218	if (! completer_entries_eq (ent1->addl_entries, ent2->addl_entries))
2219	return 0;
2220
2221	ent1 = ent1->alternative;
2222	ent2 = ent2->alternative;
2223	}
2224
2225	return ent1 == ent2;
2226	}
2227
2228
2229	/* Insert ENT into the global list of completers and return it. If an
2230	equivalent entry (according to completer_entries_eq) already exists,
2231	it is returned instead. */
2232	static struct completer_entry *
2233	insert_gclist (struct completer_entry *ent)
2234	{
2235	if (ent != NULL)
2236	{
2237	int i;
2238	int x;
2239	int start = 0, end;
2240
2241	ent->addl_entries = insert_gclist (ent->addl_entries);
2242	ent->alternative = insert_gclist (ent->alternative);
2243
2244	i = glistlen / 2;
2245	end = glistlen;
2246
2247	if (glisttotlen == glistlen)
2248	{
2249	glisttotlen += 20;
2250	glist = (struct completer_entry **)
2251	xrealloc (glist, sizeof (struct completer_entry ) glisttotlen);
2252	}
2253
2254	if (glistlen == 0)
2255	{
2256	glist[0] = ent;
2257	glistlen = 1;
2258	return ent;
2259	}
2260
2261	if (ent->name->num < glist[0]->name->num)
2262	i = 0;
2263	else if (ent->name->num > glist[end - 1]->name->num)
2264	i = end;
2265	else
2266	{
2267	int c;
2268
2269	while (1)
2270	{
2271	i = (start + end) / 2;
2272	c = ent->name->num - glist[i]->name->num;
2273
2274	if (c < 0)
2275	end = i - 1;
2276	else if (c == 0)
2277	{
2278	while (i > 0
2279	&& ent->name->num == glist[i - 1]->name->num)
2280	i--;
2281
2282	break;
2283	}
2284	else
2285	start = i + 1;
2286
2287	if (start > end)
2288	break;
2289	}
2290
2291	if (c == 0)
2292	{
2293	while (i < glistlen)
2294	{
2295	if (ent->name->num != glist[i]->name->num)
2296	break;
2297
2298	if (completer_entries_eq (ent, glist[i]))
2299	return glist[i];
2300
2301	i++;
2302	}
2303	}
2304	}
2305
2306	for (; i > 0 && i < glistlen; i--)
2307	if (ent->name->num >= glist[i - 1]->name->num)
2308	break;
2309
2310	for (; i < glistlen; i++)
2311	if (ent->name->num < glist[i]->name->num)
2312	break;
2313
2314	for (x = glistlen - 1; x >= i; x--)
2315	glist[x + 1] = glist[x];
2316
2317	glist[i] = ent;
2318	glistlen++;
2319	}
2320	return ent;
2321	}
2322
2323
2324	static int
2325	get_prefix_len (name)
2326	const char *name;
2327	{
2328	char *c;
2329
2330	if (name[0] == '\0')
2331	return 0;
2332
2333	c = strchr (name, '.');
2334	if (c != NULL)
2335	return c - name;
2336	else
2337	return strlen (name);
2338	}
2339
2340
2341	static void
2342	compute_completer_bits (ment, ent)
2343	struct main_entry *ment;
2344	struct completer_entry *ent;
2345	{
2346	while (ent != NULL)
2347	{
2348	compute_completer_bits (ment, ent->addl_entries);
2349
2350	if (ent->is_terminal)
2351	{
2352	ia64_insn mask = 0;
2353	ia64_insn our_bits = ent->bits;
2354	struct completer_entry *p = ent->parent;
2355	ia64_insn p_bits;
2356	int x;
2357
2358	while (p != NULL && ! p->is_terminal)
2359	p = p->parent;
2360
2361	if (p != NULL)
2362	p_bits = p->bits;
2363	else
2364	p_bits = ment->opcode->opcode;
2365
2366	for (x = 0; x < 64; x++)
2367	{
2368	ia64_insn m = ((ia64_insn) 1) << x;
2369
2370	if ((p_bits & m) != (our_bits & m))
2371	mask \|= m;
2372	else
2373	our_bits &= ~m;
2374	}
2375	ent->bits = our_bits;
2376	ent->mask = mask;
2377	}
2378	else
2379	{
2380	ent->bits = 0;
2381	ent->mask = 0;
2382	}
2383
2384	ent = ent->alternative;
2385	}
2386	}
2387
2388
2389	/* Find identical completer trees that are used in different
2390	instructions and collapse their entries. */
2391	static void
2392	collapse_redundant_completers (void)
2393	{
2394	struct main_entry *ptr;
2395	int x;
2396
2397	for (ptr = maintable; ptr != NULL; ptr = ptr->next)
2398	{
2399	if (ptr->completers == NULL)
2400	abort ();
2401
2402	compute_completer_bits (ptr, ptr->completers);
2403	ptr->completers = insert_gclist (ptr->completers);
2404	}
2405
2406	/* The table has been finalized, now number the indexes. */
2407	for (x = 0; x < glistlen; x++)
2408	glist[x]->num = x;
2409	}
2410
2411
2412
2413	/* Attach two lists of dependencies to each opcode.
2414	1) all resources which, when already marked in use, conflict with this
2415	opcode (chks)
2416	2) all resources which must be marked in use when this opcode is used
2417	(regs). */
2418	static int
2419	insert_opcode_dependencies (opc, cmp)
2420	struct ia64_opcode *opc;
2421	struct completer_entry *cmp ATTRIBUTE_UNUSED;
2422	{
2423	/* Note all resources which point to this opcode. rfi has the most chks
2424	(79) and cmpxchng has the most regs (54) so 100 here should be enough. */
2425	int i;
2426	int nregs = 0;
2427	unsigned short regs[256];
2428	int nchks = 0;
2429	unsigned short chks[256];
2430	/* Flag insns for which no class matched; there should be none. */
2431	int no_class_found = 1;
2432
2433	for (i = 0; i < rdepslen; i++)
2434	{
2435	struct rdep *rs = rdeps[i];
2436	int j;
2437
2438	if (strcmp (opc->name, "cmp.eq.and") == 0
2439	&& strncmp (rs->name, "PR%", 3) == 0
2440	&& rs->mode == 1)
2441	no_class_found = 99;
2442
2443	for (j=0; j < rs->nregs;j++)
2444	{
2445	int ic_note = 0;
2446
2447	if (in_iclass (opc, ics[rs->regs[j]], NULL, NULL, &ic_note))
2448	{
2449	/* We can ignore ic_note 11 for non PR resources. */
2450	if (ic_note == 11 && strncmp (rs->name, "PR", 2) != 0)
2451	ic_note = 0;
2452
2453	if (ic_note != 0 && rs->regnotes[j] != 0
2454	&& ic_note != rs->regnotes[j]
2455	&& !(ic_note == 11 && rs->regnotes[j] == 1))
2456	warn (_("IC note %d in opcode %s (IC:%s) conflicts with resource %s note %d\n"),
2457	ic_note, opc->name, ics[rs->regs[j]]->name,
2458	rs->name, rs->regnotes[j]);
2459	/* Instruction class notes override resource notes.
2460	So far, only note 11 applies to an IC instead of a resource,
2461	and note 11 implies note 1. */
2462	if (ic_note)
2463	regs[nregs++] = RDEP(ic_note, i);
2464	else
2465	regs[nregs++] = RDEP(rs->regnotes[j], i);
2466	no_class_found = 0;
2467	++rs->total_regs;
2468	}
2469	}
2470
2471	for (j = 0; j < rs->nchks; j++)
2472	{
2473	int ic_note = 0;
2474
2475	if (in_iclass (opc, ics[rs->chks[j]], NULL, NULL, &ic_note))
2476	{
2477	/* We can ignore ic_note 11 for non PR resources. */
2478	if (ic_note == 11 && strncmp (rs->name, "PR", 2) != 0)
2479	ic_note = 0;
2480
2481	if (ic_note != 0 && rs->chknotes[j] != 0
2482	&& ic_note != rs->chknotes[j]
2483	&& !(ic_note == 11 && rs->chknotes[j] == 1))
2484	warn (_("IC note %d for opcode %s (IC:%s) conflicts with resource %s note %d\n"),
2485	ic_note, opc->name, ics[rs->chks[j]]->name,
2486	rs->name, rs->chknotes[j]);
2487	if (ic_note)
2488	chks[nchks++] = RDEP(ic_note, i);
2489	else
2490	chks[nchks++] = RDEP(rs->chknotes[j], i);
2491	no_class_found = 0;
2492	++rs->total_chks;
2493	}
2494	}
2495	}
2496
2497	if (no_class_found)
2498	warn (_("opcode %s has no class (ops %d %d %d)\n"),
2499	opc->name,
2500	opc->operands[0], opc->operands[1], opc->operands[2]);
2501
2502	return insert_dependencies (nchks, chks, nregs, regs);
2503	}
2504
2505
2506	static void
2507	insert_completer_entry (opc, tabent, order)
2508	struct ia64_opcode *opc;
2509	struct main_entry *tabent;
2510	int order;
2511	{
2512	struct completer_entry **ptr = &tabent->completers;
2513	struct completer_entry *parent = NULL;
2514	char pcopy[129], *prefix;
2515	int at_end = 0;
2516
2517	if (strlen (opc->name) > 128)
2518	abort ();
2519
2520	strcpy (pcopy, opc->name);
2521	prefix = pcopy + get_prefix_len (pcopy);
2522
2523	if (prefix[0] != '\0')
2524	prefix++;
2525
2526	while (! at_end)
2527	{
2528	int need_new_ent = 1;
2529	int plen = get_prefix_len (prefix);
2530	struct string_entry *sent;
2531
2532	at_end = (prefix[plen] == '\0');
2533	prefix[plen] = '\0';
2534	sent = insert_string (prefix);
2535
2536	while (*ptr != NULL)
2537	{
2538	int cmpres = sent->num - (*ptr)->name->num;
2539
2540	if (cmpres == 0)
2541	{
2542	need_new_ent = 0;
2543	break;
2544	}
2545	else
2546	ptr = &((*ptr)->alternative);
2547	}
2548
2549	if (need_new_ent)
2550	{
2551	struct completer_entry *nent = tmalloc (struct completer_entry);
2552
2553	nent->name = sent;
2554	nent->parent = parent;
2555	nent->addl_entries = NULL;
2556	nent->alternative = *ptr;
2557	*ptr = nent;
2558	nent->is_terminal = 0;
2559	nent->dependencies = -1;
2560	}
2561
2562	if (! at_end)
2563	{
2564	parent = *ptr;
2565	ptr = &((*ptr)->addl_entries);
2566	prefix += plen + 1;
2567	}
2568	}
2569
2570	if ((*ptr)->is_terminal)
2571	abort ();
2572
2573	(*ptr)->is_terminal = 1;
2574	(*ptr)->mask = (ia64_insn)-1;
2575	(*ptr)->bits = opc->opcode;
2576	(ptr)->dependencies = insert_opcode_dependencies (opc, ptr);
2577	(*ptr)->order = order;
2578	}
2579
2580
2581	static void
2582	print_completer_entry (ent)
2583	struct completer_entry *ent;
2584	{
2585	int moffset = 0;
2586	ia64_insn mask = ent->mask, bits = ent->bits;
2587
2588	if (mask != 0)
2589	{
2590	while (! (mask & 1))
2591	{
2592	moffset++;
2593	mask = mask >> 1;
2594	bits = bits >> 1;
2595	}
2596
2597	if (bits & 0xffffffff00000000LL)
2598	abort ();
2599	}
2600
2601	printf (" { 0x%x, 0x%x, %d, %d, %d, %d, %d, %d },\n",
2602	(int)bits,
2603	(int)mask,
2604	ent->name->num,
2605	ent->alternative != NULL ? ent->alternative->num : -1,
2606	ent->addl_entries != NULL ? ent->addl_entries->num : -1,
2607	moffset,
2608	ent->is_terminal ? 1 : 0,
2609	ent->dependencies);
2610	}
2611
2612
2613	static void
2614	print_completer_table ()
2615	{
2616	int x;
2617
2618	printf ("static const struct ia64_completer_table\ncompleter_table[] = {\n");
2619	for (x = 0; x < glistlen; x++)
2620	print_completer_entry (glist[x]);
2621	printf ("};\n\n");
2622	}
2623
2624
2625	static int
2626	opcodes_eq (opc1, opc2)
2627	struct ia64_opcode *opc1;
2628	struct ia64_opcode *opc2;
2629	{
2630	int x;
2631	int plen1, plen2;
2632
2633	if ((opc1->mask != opc2->mask) \|\| (opc1->type != opc2->type)
2634	\|\| (opc1->num_outputs != opc2->num_outputs)
2635	\|\| (opc1->flags != opc2->flags))
2636	return 0;
2637
2638	for (x = 0; x < 5; x++)
2639	if (opc1->operands[x] != opc2->operands[x])
2640	return 0;
2641
2642	plen1 = get_prefix_len (opc1->name);
2643	plen2 = get_prefix_len (opc2->name);
2644
2645	if (plen1 == plen2 && (memcmp (opc1->name, opc2->name, plen1) == 0))
2646	return 1;
2647
2648	return 0;
2649	}
2650
2651
2652	static void
2653	add_opcode_entry (opc)
2654	struct ia64_opcode *opc;
2655	{
2656	struct main_entry **place;
2657	struct string_entry *name;
2658	char prefix[129];
2659	int found_it = 0;
2660
2661	if (strlen (opc->name) > 128)
2662	abort ();
2663
2664	place = &maintable;
2665	strcpy (prefix, opc->name);
2666	prefix[get_prefix_len (prefix)] = '\0';
2667	name = insert_string (prefix);
2668
2669	/* Walk the list of opcode table entries. If it's a new
2670	instruction, allocate and fill in a new entry. Note
2671	the main table is alphabetical by opcode name. */
2672
2673	while (*place != NULL)
2674	{
2675	if ((*place)->name->num == name->num
2676	&& opcodes_eq ((*place)->opcode, opc))
2677	{
2678	found_it = 1;
2679	break;
2680	}
2681	if ((*place)->name->num > name->num)
2682	break;
2683
2684	place = &((*place)->next);
2685	}
2686	if (! found_it)
2687	{
2688	struct main_entry *nent = tmalloc (struct main_entry);
2689
2690	nent->name = name;
2691	nent->opcode = opc;
2692	nent->next = *place;
2693	nent->completers = 0;
2694	*place = nent;
2695
2696	if (otlen == ottotlen)
2697	{
2698	ottotlen += 20;
2699	ordered_table = (struct main_entry **)
2700	xrealloc (ordered_table, sizeof (struct main_entry ) ottotlen);
2701	}
2702	ordered_table[otlen++] = nent;
2703	}
2704
2705	insert_completer_entry (opc, *place, opcode_count++);
2706	}
2707
2708
2709	static void
2710	print_main_table (void)
2711	{
2712	struct main_entry *ptr = maintable;
2713	int index = 0;
2714
2715	printf ("static const struct ia64_main_table\nmain_table[] = {\n");
2716	while (ptr != NULL)
2717	{
2718	printf (" { %d, %d, %d, 0x",
2719	ptr->name->num,
2720	ptr->opcode->type,
2721	ptr->opcode->num_outputs);
2722	fprintf_vma (stdout, ptr->opcode->opcode);
2723	printf ("ull, 0x");
2724	fprintf_vma (stdout, ptr->opcode->mask);
2725	printf ("ull, { %d, %d, %d, %d, %d }, 0x%x, %d, },\n",
2726	ptr->opcode->operands[0],
2727	ptr->opcode->operands[1],
2728	ptr->opcode->operands[2],
2729	ptr->opcode->operands[3],
2730	ptr->opcode->operands[4],
2731	ptr->opcode->flags,
2732	ptr->completers->num);
2733
2734	ptr->main_index = index++;
2735
2736	ptr = ptr->next;
2737	}
2738	printf ("};\n\n");
2739	}
2740
2741
2742	static void
2743	shrink (table)
2744	struct ia64_opcode *table;
2745	{
2746	int curr_opcode;
2747
2748	for (curr_opcode = 0; table[curr_opcode].name != NULL; curr_opcode++)
2749	add_opcode_entry (table + curr_opcode);
2750	}
2751
2752
2753
2754	/* Program options. */
2755	#define OPTION_SRCDIR 200
2756
2757	struct option long_options[] =
2758	{
2759	{"srcdir", required_argument, NULL, OPTION_SRCDIR},
2760	{"debug", no_argument, NULL, 'd'},
2761	{"version", no_argument, NULL, 'V'},
2762	{"help", no_argument, NULL, 'h'},
2763	{0, no_argument, NULL, 0}
2764	};
2765
2766	static void
2767	print_version (void)
2768	{
2769	printf ("%s: version 1.0\n", program_name);
2770	xexit (0);
2771	}
2772
2773	static void
2774	usage (FILE * stream, int status)
2775	{
2776	fprintf (stream, "Usage: %s [-V \| --version] [-d \| --debug] [--srcdir=dirname] [--help]\n",
2777	program_name);
2778	xexit (status);
2779	}
2780
2781	int
2782	main (int argc, char **argv)
2783	{
2784	extern int chdir (char *);
2785	char *srcdir = NULL;
2786	int c;
2787
2788	program_name = *argv;
2789	xmalloc_set_program_name (program_name);
2790
2791	while ((c = getopt_long (argc, argv, "vVdh", long_options, 0)) != EOF)
2792	switch (c)
2793	{
2794	case OPTION_SRCDIR:
2795	srcdir = optarg;
2796	break;
2797	case 'V':
2798	case 'v':
2799	print_version ();
2800	break;
2801	case 'd':
2802	debug = 1;
2803	break;
2804	case 'h':
2805	case '?':
2806	usage (stderr, 0);
2807	default:
2808	case 0:
2809	break;
2810	}
2811
2812	if (optind != argc)
2813	usage (stdout, 1);
2814
2815	if (srcdir != NULL)
2816	if (chdir (srcdir) != 0)
2817	fail (_("unable to change directory to \"%s\", errno = %s\n"),
2818	srcdir, strerror (errno));
2819
2820	load_insn_classes ();
2821	load_dependencies ();
2822
2823	shrink (ia64_opcodes_a);
2824	shrink (ia64_opcodes_b);
2825	shrink (ia64_opcodes_f);
2826	shrink (ia64_opcodes_i);
2827	shrink (ia64_opcodes_m);
2828	shrink (ia64_opcodes_x);
2829	shrink (ia64_opcodes_d);
2830
2831	collapse_redundant_completers ();
2832
2833	printf ("/* This file is automatically generated by ia64-gen. Do not edit! */\n");
2834	print_string_table ();
2835	print_dependency_table ();
2836	print_completer_table ();
2837	print_main_table ();
2838
2839	generate_disassembler ();
2840
2841	exit (0);
2842	}

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