1 /* ia64-gen.c -- Generate a shrunk set of opcode tables
2 Copyright 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2012
3 Free Software Foundation, Inc.
4 Written by Bob Manson, Cygnus Solutions, <manson@cygnus.com>
6 This file is part of the GNU opcodes library.
8 This library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 It is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this file; see the file COPYING. If not, write to the
20 Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
24 /* While the ia64-opc-* set of opcode tables are easy to maintain,
25 they waste a tremendous amount of space. ia64-gen rearranges the
26 instructions into a directed acyclic graph (DAG) of instruction opcodes and
27 their possible completers, as well as compacting the set of strings used.
29 The disassembler table consists of a state machine that does
30 branching based on the bits of the opcode being disassembled. The
31 state encodings have been chosen to minimize the amount of space
34 The resource table is constructed based on some text dependency tables,
35 which are also easier to maintain than the final representation. */
42 #include "libiberty.h"
43 #include "safe-ctype.h"
46 #include "ia64-opc-a.c"
47 #include "ia64-opc-i.c"
48 #include "ia64-opc-m.c"
49 #include "ia64-opc-b.c"
50 #include "ia64-opc-f.c"
51 #include "ia64-opc-x.c"
52 #include "ia64-opc-d.c"
55 #define _(String) gettext (String)
57 /* This is a copy of fprintf_vma from bfd/bfd-in2.h. We have to use this
58 always, because we might be compiled without BFD64 defined, if configured
59 for a 32-bit target and --enable-targets=all is used. This will work for
60 both 32-bit and 64-bit hosts. */
61 #define _opcode_int64_low(x) ((unsigned long) (((x) & 0xffffffff)))
62 #define _opcode_int64_high(x) ((unsigned long) (((x) >> 32) & 0xffffffff))
63 #define opcode_fprintf_vma(s,x) \
64 fprintf ((s), "%08lx%08lx", _opcode_int64_high (x), _opcode_int64_low (x))
66 const char * program_name = NULL;
69 #define NELEMS(a) (sizeof (a) / sizeof ((a)[0]))
70 #define tmalloc(X) (X *) xmalloc (sizeof (X))
72 typedef unsigned long long ci_t;
73 /* The main opcode table entry. Each entry is a unique combination of
74 name and flags (no two entries in the table compare as being equal
78 /* The base name of this opcode. The names of its completers are
79 appended to it to generate the full instruction name. */
80 struct string_entry *name;
81 /* The base opcode entry. Which one to use is a fairly arbitrary choice;
82 it uses the first one passed to add_opcode_entry. */
83 struct ia64_opcode *opcode;
84 /* The list of completers that can be applied to this opcode. */
85 struct completer_entry *completers;
86 /* Next entry in the chain. */
87 struct main_entry *next;
88 /* Index in the main table. */
90 } *maintable, **ordered_table;
96 /* The set of possible completers for an opcode. */
97 struct completer_entry
99 /* This entry's index in the ia64_completer_table[] array. */
102 /* The name of the completer. */
103 struct string_entry *name;
105 /* This entry's parent. */
106 struct completer_entry *parent;
108 /* Set if this is a terminal completer (occurs at the end of an
112 /* An alternative completer. */
113 struct completer_entry *alternative;
115 /* Additional completers that can be appended to this one. */
116 struct completer_entry *addl_entries;
118 /* Before compute_completer_bits () is invoked, this contains the actual
119 instruction opcode for this combination of opcode and completers.
120 Afterwards, it contains those bits that are different from its
124 /* Bits set to 1 correspond to those bits in this completer's opcode
125 that are different from its parent completer's opcode (or from
126 the base opcode if the entry is the root of the opcode's completer
127 list). This field is filled in by compute_completer_bits (). */
130 /* Index into the opcode dependency list, or -1 if none. */
133 /* Remember the order encountered in the opcode tables. */
137 /* One entry in the disassembler name table. */
140 /* The index into the ia64_name_dis array for this entry. */
143 /* The index into the main_table[] array. */
146 /* The disassmbly priority of this entry. */
149 /* The completer_index value for this entry. */
150 ci_t completer_index;
152 /* How many other entries share this decode. */
155 /* The next entry sharing the same decode. */
156 struct disent *nexte;
158 /* The next entry in the name list. */
159 struct disent *next_ent;
160 } *disinsntable = NULL;
162 /* A state machine that will eventually be used to generate the
163 disassembler table. */
166 struct disent *disent;
167 struct bittree *bits[3]; /* 0, 1, and X (don't care). */
172 /* The string table contains all opcodes and completers sorted in
173 alphabetical order. */
175 /* One entry in the string table. */
178 /* The index in the ia64_strings[] array for this entry. */
180 /* And the string. */
182 } **string_table = NULL;
185 int strtabtotlen = 0;
188 /* Resource dependency entries. */
191 char *name; /* Resource name. */
193 mode:2, /* RAW, WAW, or WAR. */
194 semantics:3; /* Dependency semantics. */
195 char *extra; /* Additional semantics info. */
197 int total_chks; /* Total #of terminal insns. */
198 int *chks; /* Insn classes which read (RAW), write
199 (WAW), or write (WAR) this rsrc. */
200 int *chknotes; /* Dependency notes for each class. */
202 int total_regs; /* Total #of terminal insns. */
203 int *regs; /* Insn class which write (RAW), write2
204 (WAW), or read (WAR) this rsrc. */
205 int *regnotes; /* Dependency notes for each class. */
207 int waw_special; /* Special WAW dependency note. */
210 static int rdepslen = 0;
211 static int rdepstotlen = 0;
213 /* Array of all instruction classes. */
216 char *name; /* Instruction class name. */
217 int is_class; /* Is a class, not a terminal. */
219 int *subs; /* Other classes within this class. */
221 int xsubs[4]; /* Exclusions. */
222 char *comment; /* Optional comment. */
223 int note; /* Optional note. */
224 int terminal_resolved; /* Did we match this with anything? */
225 int orphan; /* Detect class orphans. */
228 static int iclen = 0;
229 static int ictotlen = 0;
231 /* An opcode dependency (chk/reg pair of dependency lists). */
234 int chk; /* index into dlists */
235 int reg; /* index into dlists */
238 static int opdeplen = 0;
239 static int opdeptotlen = 0;
241 /* A generic list of dependencies w/notes encoded. These may be shared. */
245 unsigned short *deps;
248 static int dlistlen = 0;
249 static int dlisttotlen = 0;
252 static void fail (const char *, ...) ATTRIBUTE_PRINTF_1;
253 static void warn (const char *, ...) ATTRIBUTE_PRINTF_1;
254 static struct rdep * insert_resource (const char *, enum ia64_dependency_mode);
255 static int deplist_equals (struct deplist *, struct deplist *);
256 static short insert_deplist (int, unsigned short *);
257 static short insert_dependencies (int, unsigned short *, int, unsigned short *);
258 static void mark_used (struct iclass *, int);
259 static int fetch_insn_class (const char *, int);
260 static int sub_compare (const void *, const void *);
261 static void load_insn_classes (void);
262 static void parse_resource_users (const char *, int **, int *, int **);
263 static int parse_semantics (char *);
264 static void add_dep (const char *, const char *, const char *, int, int, char *, int);
265 static void load_depfile (const char *, enum ia64_dependency_mode);
266 static void load_dependencies (void);
267 static int irf_operand (int, const char *);
268 static int in_iclass_mov_x (struct ia64_opcode *, struct iclass *, const char *, const char *);
269 static int in_iclass (struct ia64_opcode *, struct iclass *, const char *, const char *, int *);
270 static int lookup_regindex (const char *, int);
271 static int lookup_specifier (const char *);
272 static void print_dependency_table (void);
273 static struct string_entry * insert_string (char *);
274 static void gen_dis_table (struct bittree *);
275 static void print_dis_table (void);
276 static void generate_disassembler (void);
277 static void print_string_table (void);
278 static int completer_entries_eq (struct completer_entry *, struct completer_entry *);
279 static struct completer_entry * insert_gclist (struct completer_entry *);
280 static int get_prefix_len (const char *);
281 static void compute_completer_bits (struct main_entry *, struct completer_entry *);
282 static void collapse_redundant_completers (void);
283 static int insert_opcode_dependencies (struct ia64_opcode *, struct completer_entry *);
284 static void insert_completer_entry (struct ia64_opcode *, struct main_entry *, int);
285 static void print_completer_entry (struct completer_entry *);
286 static void print_completer_table (void);
287 static int opcodes_eq (struct ia64_opcode *, struct ia64_opcode *);
288 static void add_opcode_entry (struct ia64_opcode *);
289 static void print_main_table (void);
290 static void shrink (struct ia64_opcode *);
291 static void print_version (void);
292 static void usage (FILE *, int);
293 static void finish_distable (void);
294 static void insert_bit_table_ent (struct bittree *, int, ia64_insn, ia64_insn, int, int, ci_t);
295 static void add_dis_entry (struct bittree *, ia64_insn, ia64_insn, int, struct completer_entry *, ci_t);
296 static void compact_distree (struct bittree *);
297 static struct bittree * make_bittree_entry (void);
298 static struct disent * add_dis_table_ent (struct disent *, int, int, ci_t);
302 fail (const char *message, ...)
306 va_start (args, message);
307 fprintf (stderr, _("%s: Error: "), program_name);
308 vfprintf (stderr, message, args);
314 warn (const char *message, ...)
318 va_start (args, message);
320 fprintf (stderr, _("%s: Warning: "), program_name);
321 vfprintf (stderr, message, args);
325 /* Add NAME to the resource table, where TYPE is RAW or WAW. */
327 insert_resource (const char *name, enum ia64_dependency_mode type)
329 if (rdepslen == rdepstotlen)
332 rdeps = (struct rdep **)
333 xrealloc (rdeps, sizeof(struct rdep **) * rdepstotlen);
335 rdeps[rdepslen] = tmalloc(struct rdep);
336 memset((void *)rdeps[rdepslen], 0, sizeof(struct rdep));
337 rdeps[rdepslen]->name = xstrdup (name);
338 rdeps[rdepslen]->mode = type;
339 rdeps[rdepslen]->waw_special = 0;
341 return rdeps[rdepslen++];
344 /* Are the lists of dependency indexes equivalent? */
346 deplist_equals (struct deplist *d1, struct deplist *d2)
350 if (d1->len != d2->len)
353 for (i = 0; i < d1->len; i++)
354 if (d1->deps[i] != d2->deps[i])
360 /* Add the list of dependencies to the list of dependency lists. */
362 insert_deplist (int count, unsigned short *deps)
364 /* Sort the list, then see if an equivalent list exists already.
365 this results in a much smaller set of dependency lists. */
366 struct deplist *list;
370 memset ((void *)set, 0, sizeof (set));
371 for (i = 0; i < count; i++)
375 for (i = 0; i < (int) sizeof (set); i++)
379 list = tmalloc (struct deplist);
381 list->deps = (unsigned short *) malloc (sizeof (unsigned short) * count);
383 for (i = 0, count = 0; i < (int) sizeof (set); i++)
385 list->deps[count++] = i;
387 /* Does this list exist already? */
388 for (i = 0; i < dlistlen; i++)
389 if (deplist_equals (list, dlists[i]))
396 if (dlistlen == dlisttotlen)
399 dlists = (struct deplist **)
400 xrealloc (dlists, sizeof(struct deplist **) * dlisttotlen);
402 dlists[dlistlen] = list;
407 /* Add the given pair of dependency lists to the opcode dependency list. */
409 insert_dependencies (int nchks, unsigned short *chks,
410 int nregs, unsigned short *regs)
418 regind = insert_deplist (nregs, regs);
420 chkind = insert_deplist (nchks, chks);
422 for (i = 0; i < opdeplen; i++)
423 if (opdeps[i]->chk == chkind
424 && opdeps[i]->reg == regind)
427 pair = tmalloc (struct opdep);
431 if (opdeplen == opdeptotlen)
434 opdeps = (struct opdep **)
435 xrealloc (opdeps, sizeof(struct opdep **) * opdeptotlen);
437 opdeps[opdeplen] = pair;
443 mark_used (struct iclass *ic, int clear_terminals)
449 ic->terminal_resolved = 1;
451 for (i = 0; i < ic->nsubs; i++)
452 mark_used (ics[ic->subs[i]], clear_terminals);
454 for (i = 0; i < ic->nxsubs; i++)
455 mark_used (ics[ic->xsubs[i]], clear_terminals);
458 /* Look up an instruction class; if CREATE make a new one if none found;
459 returns the index into the insn class array. */
461 fetch_insn_class (const char *full_name, int create)
471 if (CONST_STRNEQ (full_name, "IC:"))
473 name = xstrdup (full_name + 3);
477 name = xstrdup (full_name);
479 if ((xsect = strchr(name, '\\')) != NULL)
481 if ((comment = strchr(name, '[')) != NULL)
483 if ((notestr = strchr(name, '+')) != NULL)
486 /* If it is a composite class, then ignore comments and notes that come after
487 the '\\', since they don't apply to the part we are decoding now. */
500 note = atoi (notestr + 1);
501 if ((nextnotestr = strchr (notestr + 1, '+')) != NULL)
503 if (strcmp (notestr, "+1+13") == 0)
505 else if (!xsect || nextnotestr < xsect)
506 warn (_("multiple note %s not handled\n"), notestr);
510 /* If it's a composite class, leave the notes and comments in place so that
511 we have a unique name for the composite class. Otherwise, we remove
521 for (i = 0; i < iclen; i++)
522 if (strcmp (name, ics[i]->name) == 0
523 && ((comment == NULL && ics[i]->comment == NULL)
524 || (comment != NULL && ics[i]->comment != NULL
525 && strncmp (ics[i]->comment, comment,
526 strlen (ics[i]->comment)) == 0))
527 && note == ics[i]->note)
533 /* Doesn't exist, so make a new one. */
534 if (iclen == ictotlen)
537 ics = (struct iclass **)
538 xrealloc (ics, (ictotlen) * sizeof (struct iclass *));
542 ics[ind] = tmalloc (struct iclass);
543 memset ((void *)ics[ind], 0, sizeof (struct iclass));
544 ics[ind]->name = xstrdup (name);
545 ics[ind]->is_class = is_class;
546 ics[ind]->orphan = 1;
550 ics[ind]->comment = xstrdup (comment + 1);
551 ics[ind]->comment[strlen (ics[ind]->comment)-1] = 0;
555 ics[ind]->note = note;
557 /* If it's a composite class, there's a comment or note, look for an
558 existing class or terminal with the same name. */
559 if ((xsect || comment || notestr) && is_class)
561 /* First, populate with the class we're based on. */
562 char *subname = name;
572 ics[ind]->subs = tmalloc(int);
573 ics[ind]->subs[0] = fetch_insn_class (subname, 1);
578 char *subname = xsect + 1;
580 xsect = strchr (subname, '\\');
583 ics[ind]->xsubs[ics[ind]->nxsubs] = fetch_insn_class (subname,1);
591 /* For sorting a class's sub-class list only; make sure classes appear before
594 sub_compare (const void *e1, const void *e2)
596 struct iclass *ic1 = ics[*(int *)e1];
597 struct iclass *ic2 = ics[*(int *)e2];
604 else if (ic2->is_class)
607 return strcmp (ic1->name, ic2->name);
611 load_insn_classes (void)
613 FILE *fp = fopen ("ia64-ic.tbl", "r");
617 fail (_("can't find ia64-ic.tbl for reading\n"));
619 /* Discard first line. */
620 fgets (buf, sizeof(buf), fp);
628 if (fgets (buf, sizeof (buf), fp) == NULL)
631 while (ISSPACE (buf[strlen (buf) - 1]))
632 buf[strlen (buf) - 1] = '\0';
638 if (tmp == buf + sizeof (buf))
643 iclass = fetch_insn_class (name, 1);
644 ics[iclass]->is_class = 1;
646 if (strcmp (name, "none") == 0)
648 ics[iclass]->is_class = 0;
649 ics[iclass]->terminal_resolved = 1;
653 /* For this class, record all sub-classes. */
659 while (*tmp && ISSPACE (*tmp))
662 if (tmp == buf + sizeof (buf))
666 while (*tmp && *tmp != ',')
669 if (tmp == buf + sizeof (buf))
675 ics[iclass]->subs = (int *)
676 xrealloc ((void *)ics[iclass]->subs,
677 (ics[iclass]->nsubs + 1) * sizeof (int));
679 sub = fetch_insn_class (subname, 1);
680 ics[iclass]->subs = (int *)
681 xrealloc (ics[iclass]->subs, (ics[iclass]->nsubs + 1) * sizeof (int));
682 ics[iclass]->subs[ics[iclass]->nsubs++] = sub;
685 /* Make sure classes come before terminals. */
686 qsort ((void *)ics[iclass]->subs,
687 ics[iclass]->nsubs, sizeof(int), sub_compare);
692 printf ("%d classes\n", iclen);
695 /* Extract the insn classes from the given line. */
697 parse_resource_users (const char *ref, int **usersp, int *nusersp,
701 char *line = xstrdup (ref);
703 int *users = *usersp;
704 int count = *nusersp;
705 int *notes = *notesp;
717 while (ISSPACE (*tmp))
720 while (*tmp && *tmp != ',')
725 xsect = strchr (name, '\\');
726 if ((notestr = strstr (name, "+")) != NULL)
730 note = atoi (notestr + 1);
731 if ((nextnotestr = strchr (notestr + 1, '+')) != NULL)
733 /* Note 13 always implies note 1. */
734 if (strcmp (notestr, "+1+13") == 0)
736 else if (!xsect || nextnotestr < xsect)
737 warn (_("multiple note %s not handled\n"), notestr);
745 /* All classes are created when the insn class table is parsed;
746 Individual instructions might not appear until the dependency tables
747 are read. Only create new classes if it's *not* an insn class,
748 or if it's a composite class (which wouldn't necessarily be in the IC
750 if (! CONST_STRNEQ (name, "IC:") || xsect != NULL)
753 iclass = fetch_insn_class (name, create);
757 xrealloc ((void *) users,(count + 1) * sizeof (int));
759 xrealloc ((void *) notes,(count + 1) * sizeof (int));
761 users[count++] = iclass;
762 mark_used (ics[iclass], 0);
765 printf("Class %s not found\n", name);
767 /* Update the return values. */
776 parse_semantics (char *sem)
778 if (strcmp (sem, "none") == 0)
779 return IA64_DVS_NONE;
780 else if (strcmp (sem, "implied") == 0)
781 return IA64_DVS_IMPLIED;
782 else if (strcmp (sem, "impliedF") == 0)
783 return IA64_DVS_IMPLIEDF;
784 else if (strcmp (sem, "data") == 0)
785 return IA64_DVS_DATA;
786 else if (strcmp (sem, "instr") == 0)
787 return IA64_DVS_INSTR;
788 else if (strcmp (sem, "specific") == 0)
789 return IA64_DVS_SPECIFIC;
790 else if (strcmp (sem, "stop") == 0)
791 return IA64_DVS_STOP;
793 return IA64_DVS_OTHER;
797 add_dep (const char *name, const char *chk, const char *reg,
798 int semantics, int mode, char *extra, int flag)
802 rs = insert_resource (name, mode);
804 parse_resource_users (chk, &rs->chks, &rs->nchks, &rs->chknotes);
805 parse_resource_users (reg, &rs->regs, &rs->nregs, &rs->regnotes);
807 rs->semantics = semantics;
809 rs->waw_special = flag;
813 load_depfile (const char *filename, enum ia64_dependency_mode mode)
815 FILE *fp = fopen (filename, "r");
819 fail (_("can't find %s for reading\n"), filename);
821 fgets (buf, sizeof(buf), fp);
829 if (fgets (buf, sizeof(buf), fp) == NULL)
832 while (ISSPACE (buf[strlen (buf) - 1]))
833 buf[strlen (buf) - 1] = '\0';
840 while (ISSPACE (*tmp))
843 tmp = strchr (tmp, ';');
847 while (ISSPACE (*tmp))
850 tmp = strchr (tmp, ';');
854 while (ISSPACE (*tmp))
856 semantics = parse_semantics (tmp);
857 extra = semantics == IA64_DVS_OTHER ? xstrdup (tmp) : NULL;
859 /* For WAW entries, if the chks and regs differ, we need to enter the
860 entries in both positions so that the tables will be parsed properly,
861 without a lot of extra work. */
862 if (mode == IA64_DV_WAW && strcmp (regp, chkp) != 0)
864 add_dep (name, chkp, regp, semantics, mode, extra, 0);
865 add_dep (name, regp, chkp, semantics, mode, extra, 1);
869 add_dep (name, chkp, regp, semantics, mode, extra, 0);
876 load_dependencies (void)
878 load_depfile ("ia64-raw.tbl", IA64_DV_RAW);
879 load_depfile ("ia64-waw.tbl", IA64_DV_WAW);
880 load_depfile ("ia64-war.tbl", IA64_DV_WAR);
883 printf ("%d RAW/WAW/WAR dependencies\n", rdepslen);
886 /* Is the given operand an indirect register file operand? */
888 irf_operand (int op, const char *field)
892 return op == IA64_OPND_RR_R3 || op == IA64_OPND_DBR_R3
893 || op == IA64_OPND_IBR_R3 || op == IA64_OPND_PKR_R3
894 || op == IA64_OPND_PMC_R3 || op == IA64_OPND_PMD_R3
895 || op == IA64_OPND_MSR_R3 || op == IA64_OPND_CPUID_R3;
899 return ((op == IA64_OPND_RR_R3 && strstr (field, "rr"))
900 || (op == IA64_OPND_DBR_R3 && strstr (field, "dbr"))
901 || (op == IA64_OPND_IBR_R3 && strstr (field, "ibr"))
902 || (op == IA64_OPND_PKR_R3 && strstr (field, "pkr"))
903 || (op == IA64_OPND_PMC_R3 && strstr (field, "pmc"))
904 || (op == IA64_OPND_PMD_R3 && strstr (field, "pmd"))
905 || (op == IA64_OPND_MSR_R3 && strstr (field, "msr"))
906 || (op == IA64_OPND_CPUID_R3 && strstr (field, "cpuid"))
907 || (op == IA64_OPND_DAHR_R3 && strstr (field, "dahr")));
911 /* Handle mov_ar, mov_br, mov_cr, move_dahr, mov_indirect, mov_ip, mov_pr,
912 * mov_psr, and mov_um insn classes. */
914 in_iclass_mov_x (struct ia64_opcode *idesc, struct iclass *ic,
915 const char *format, const char *field)
917 int plain_mov = strcmp (idesc->name, "mov") == 0;
928 int i = strcmp (idesc->name, "mov.i") == 0;
929 int m = strcmp (idesc->name, "mov.m") == 0;
930 int i2627 = i && idesc->operands[0] == IA64_OPND_AR3;
931 int i28 = i && idesc->operands[1] == IA64_OPND_AR3;
932 int m2930 = m && idesc->operands[0] == IA64_OPND_AR3;
933 int m31 = m && idesc->operands[1] == IA64_OPND_AR3;
934 int pseudo0 = plain_mov && idesc->operands[1] == IA64_OPND_AR3;
935 int pseudo1 = plain_mov && idesc->operands[0] == IA64_OPND_AR3;
939 return strstr (format, "I26") || strstr (format, "I27");
941 return strstr (format, "I28") != NULL;
943 return strstr (format, "M29") || strstr (format, "M30");
945 return strstr (format, "M31") != NULL;
946 if (pseudo0 || pseudo1)
952 int i21 = idesc->operands[0] == IA64_OPND_B1;
953 int i22 = plain_mov && idesc->operands[1] == IA64_OPND_B2;
955 return strstr (format, "I22") != NULL;
957 return strstr (format, "I21") != NULL;
962 int m32 = plain_mov && idesc->operands[0] == IA64_OPND_CR3;
963 int m33 = plain_mov && idesc->operands[1] == IA64_OPND_CR3;
965 return strstr (format, "M32") != NULL;
967 return strstr (format, "M33") != NULL;
972 int m50 = plain_mov && idesc->operands[0] == IA64_OPND_DAHR3;
974 return strstr (format, "M50") != NULL;
978 if (ic->name[5] == 'n')
980 int m42 = plain_mov && irf_operand (idesc->operands[0], field);
981 int m43 = plain_mov && irf_operand (idesc->operands[1], field);
983 return strstr (format, "M42") != NULL;
985 return strstr (format, "M43") != NULL;
987 else if (ic->name[5] == 'p')
989 return idesc->operands[1] == IA64_OPND_IP;
995 if (ic->name[5] == 'r')
997 int i25 = plain_mov && idesc->operands[1] == IA64_OPND_PR;
998 int i23 = plain_mov && idesc->operands[0] == IA64_OPND_PR;
999 int i24 = plain_mov && idesc->operands[0] == IA64_OPND_PR_ROT;
1001 return strstr (format, "I23") != NULL;
1003 return strstr (format, "I24") != NULL;
1005 return strstr (format, "I25") != NULL;
1007 else if (ic->name[5] == 's')
1009 int m35 = plain_mov && idesc->operands[0] == IA64_OPND_PSR_L;
1010 int m36 = plain_mov && idesc->operands[1] == IA64_OPND_PSR;
1012 return strstr (format, "M35") != NULL;
1014 return strstr (format, "M36") != NULL;
1021 int m35 = plain_mov && idesc->operands[0] == IA64_OPND_PSR_UM;
1022 int m36 = plain_mov && idesc->operands[1] == IA64_OPND_PSR_UM;
1024 return strstr (format, "M35") != NULL;
1026 return strstr (format, "M36") != NULL;
1033 /* Is the given opcode in the given insn class? */
1035 in_iclass (struct ia64_opcode *idesc, struct iclass *ic,
1036 const char *format, const char *field, int *notep)
1043 if (CONST_STRNEQ (ic->comment, "Format"))
1045 /* Assume that the first format seen is the most restrictive, and
1046 only keep a later one if it looks like it's more restrictive. */
1049 if (strlen (ic->comment) < strlen (format))
1051 warn (_("most recent format '%s'\nappears more restrictive than '%s'\n"),
1052 ic->comment, format);
1053 format = ic->comment;
1057 format = ic->comment;
1059 else if (CONST_STRNEQ (ic->comment, "Field"))
1062 warn (_("overlapping field %s->%s\n"),
1063 ic->comment, field);
1064 field = ic->comment;
1068 /* An insn class matches anything that is the same followed by completers,
1069 except when the absence and presence of completers constitutes different
1071 if (ic->nsubs == 0 && ic->nxsubs == 0)
1073 int is_mov = CONST_STRNEQ (idesc->name, "mov");
1074 int plain_mov = strcmp (idesc->name, "mov") == 0;
1075 int len = strlen(ic->name);
1077 resolved = ((strncmp (ic->name, idesc->name, len) == 0)
1078 && (idesc->name[len] == '\0'
1079 || idesc->name[len] == '.'));
1081 /* All break, nop, and hint variations must match exactly. */
1083 (strcmp (ic->name, "break") == 0
1084 || strcmp (ic->name, "nop") == 0
1085 || strcmp (ic->name, "hint") == 0))
1086 resolved = strcmp (ic->name, idesc->name) == 0;
1088 /* Assume restrictions in the FORMAT/FIELD negate resolution,
1089 unless specifically allowed by clauses in this block. */
1090 if (resolved && field)
1092 /* Check Field(sf)==sN against opcode sN. */
1093 if (strstr(field, "(sf)==") != NULL)
1097 if ((sf = strstr (idesc->name, ".s")) != 0)
1098 resolved = strcmp (sf + 1, strstr (field, "==") + 2) == 0;
1100 /* Check Field(lftype)==XXX. */
1101 else if (strstr (field, "(lftype)") != NULL)
1103 if (strstr (idesc->name, "fault") != NULL)
1104 resolved = strstr (field, "fault") != NULL;
1106 resolved = strstr (field, "fault") == NULL;
1108 /* Handle Field(ctype)==XXX. */
1109 else if (strstr (field, "(ctype)") != NULL)
1111 if (strstr (idesc->name, "or.andcm"))
1112 resolved = strstr (field, "or.andcm") != NULL;
1113 else if (strstr (idesc->name, "and.orcm"))
1114 resolved = strstr (field, "and.orcm") != NULL;
1115 else if (strstr (idesc->name, "orcm"))
1116 resolved = strstr (field, "or orcm") != NULL;
1117 else if (strstr (idesc->name, "or"))
1118 resolved = strstr (field, "or orcm") != NULL;
1119 else if (strstr (idesc->name, "andcm"))
1120 resolved = strstr (field, "and andcm") != NULL;
1121 else if (strstr (idesc->name, "and"))
1122 resolved = strstr (field, "and andcm") != NULL;
1123 else if (strstr (idesc->name, "unc"))
1124 resolved = strstr (field, "unc") != NULL;
1126 resolved = strcmp (field, "Field(ctype)==") == 0;
1130 if (resolved && format)
1132 if (CONST_STRNEQ (idesc->name, "dep")
1133 && strstr (format, "I13") != NULL)
1134 resolved = idesc->operands[1] == IA64_OPND_IMM8;
1135 else if (CONST_STRNEQ (idesc->name, "chk")
1136 && strstr (format, "M21") != NULL)
1137 resolved = idesc->operands[0] == IA64_OPND_F2;
1138 else if (CONST_STRNEQ (idesc->name, "lfetch"))
1139 resolved = (strstr (format, "M14 M15") != NULL
1140 && (idesc->operands[1] == IA64_OPND_R2
1141 || idesc->operands[1] == IA64_OPND_IMM9b));
1142 else if (CONST_STRNEQ (idesc->name, "br.call")
1143 && strstr (format, "B5") != NULL)
1144 resolved = idesc->operands[1] == IA64_OPND_B2;
1145 else if (CONST_STRNEQ (idesc->name, "br.call")
1146 && strstr (format, "B3") != NULL)
1147 resolved = idesc->operands[1] == IA64_OPND_TGT25c;
1148 else if (CONST_STRNEQ (idesc->name, "brp")
1149 && strstr (format, "B7") != NULL)
1150 resolved = idesc->operands[0] == IA64_OPND_B2;
1151 else if (strcmp (ic->name, "invala") == 0)
1152 resolved = strcmp (idesc->name, ic->name) == 0;
1153 else if (CONST_STRNEQ (idesc->name, "st")
1154 && (strstr (format, "M5") != NULL
1155 || strstr (format, "M10") != NULL))
1156 resolved = idesc->flags & IA64_OPCODE_POSTINC;
1157 else if (CONST_STRNEQ (idesc->name, "ld")
1158 && (strstr (format, "M2 M3") != NULL
1159 || strstr (format, "M12") != NULL
1160 || strstr (format, "M7 M8") != NULL))
1161 resolved = idesc->flags & IA64_OPCODE_POSTINC;
1166 /* Misc brl variations ('.cond' is optional);
1167 plain brl matches brl.cond. */
1169 && (strcmp (idesc->name, "brl") == 0
1170 || CONST_STRNEQ (idesc->name, "brl."))
1171 && strcmp (ic->name, "brl.cond") == 0)
1176 /* Misc br variations ('.cond' is optional). */
1178 && (strcmp (idesc->name, "br") == 0
1179 || CONST_STRNEQ (idesc->name, "br."))
1180 && strcmp (ic->name, "br.cond") == 0)
1183 resolved = (strstr (format, "B4") != NULL
1184 && idesc->operands[0] == IA64_OPND_B2)
1185 || (strstr (format, "B1") != NULL
1186 && idesc->operands[0] == IA64_OPND_TGT25c);
1191 /* probe variations. */
1192 if (!resolved && CONST_STRNEQ (idesc->name, "probe"))
1194 resolved = strcmp (ic->name, "probe") == 0
1195 && !((strstr (idesc->name, "fault") != NULL)
1196 ^ (format && strstr (format, "M40") != NULL));
1199 /* mov variations. */
1200 if (!resolved && is_mov)
1204 /* mov alias for fmerge. */
1205 if (strcmp (ic->name, "fmerge") == 0)
1207 resolved = idesc->operands[0] == IA64_OPND_F1
1208 && idesc->operands[1] == IA64_OPND_F3;
1210 /* mov alias for adds (r3 or imm14). */
1211 else if (strcmp (ic->name, "adds") == 0)
1213 resolved = (idesc->operands[0] == IA64_OPND_R1
1214 && (idesc->operands[1] == IA64_OPND_R3
1215 || (idesc->operands[1] == IA64_OPND_IMM14)));
1217 /* mov alias for addl. */
1218 else if (strcmp (ic->name, "addl") == 0)
1220 resolved = idesc->operands[0] == IA64_OPND_R1
1221 && idesc->operands[1] == IA64_OPND_IMM22;
1225 /* Some variants of mov and mov.[im]. */
1226 if (!resolved && CONST_STRNEQ (ic->name, "mov_"))
1227 resolved = in_iclass_mov_x (idesc, ic, format, field);
1230 /* Keep track of this so we can flag any insn classes which aren't
1231 mapped onto at least one real insn. */
1233 ic->terminal_resolved = 1;
1235 else for (i = 0; i < ic->nsubs; i++)
1237 if (in_iclass (idesc, ics[ic->subs[i]], format, field, notep))
1241 for (j = 0; j < ic->nxsubs; j++)
1242 if (in_iclass (idesc, ics[ic->xsubs[j]], NULL, NULL, NULL))
1246 printf ("%s is in IC %s\n", idesc->name, ic->name);
1253 /* If it's in this IC, add the IC note (if any) to the insn. */
1256 if (ic->note && notep)
1258 if (*notep && *notep != ic->note)
1259 warn (_("overwriting note %d with note %d (IC:%s)\n"),
1260 *notep, ic->note, ic->name);
1271 lookup_regindex (const char *name, int specifier)
1276 if (strstr (name, "[RSC]"))
1278 if (strstr (name, "[BSP]"))
1280 else if (strstr (name, "[BSPSTORE]"))
1282 else if (strstr (name, "[RNAT]"))
1284 else if (strstr (name, "[FCR]"))
1286 else if (strstr (name, "[EFLAG]"))
1288 else if (strstr (name, "[CSD]"))
1290 else if (strstr (name, "[SSD]"))
1292 else if (strstr (name, "[CFLG]"))
1294 else if (strstr (name, "[FSR]"))
1296 else if (strstr (name, "[FIR]"))
1298 else if (strstr (name, "[FDR]"))
1300 else if (strstr (name, "[CCV]"))
1302 else if (strstr (name, "[ITC]"))
1304 else if (strstr (name, "[RUC]"))
1306 else if (strstr (name, "[PFS]"))
1308 else if (strstr (name, "[LC]"))
1310 else if (strstr (name, "[EC]"))
1314 if (strstr (name, "[DCR]"))
1316 else if (strstr (name, "[ITM]"))
1318 else if (strstr (name, "[IVA]"))
1320 else if (strstr (name, "[PTA]"))
1322 else if (strstr (name, "[GPTA]"))
1324 else if (strstr (name, "[IPSR]"))
1326 else if (strstr (name, "[ISR]"))
1328 else if (strstr (name, "[IIP]"))
1330 else if (strstr (name, "[IFA]"))
1332 else if (strstr (name, "[ITIR]"))
1334 else if (strstr (name, "[IIPA]"))
1336 else if (strstr (name, "[IFS]"))
1338 else if (strstr (name, "[IIM]"))
1340 else if (strstr (name, "[IHA]"))
1342 else if (strstr (name, "[LID]"))
1344 else if (strstr (name, "[IVR]"))
1346 else if (strstr (name, "[TPR]"))
1348 else if (strstr (name, "[EOI]"))
1350 else if (strstr (name, "[ITV]"))
1352 else if (strstr (name, "[PMV]"))
1354 else if (strstr (name, "[CMCV]"))
1358 if (strstr (name, ".be"))
1360 else if (strstr (name, ".up"))
1362 else if (strstr (name, ".ac"))
1364 else if (strstr (name, ".mfl"))
1366 else if (strstr (name, ".mfh"))
1368 else if (strstr (name, ".ic"))
1370 else if (strstr (name, ".i"))
1372 else if (strstr (name, ".pk"))
1374 else if (strstr (name, ".dt"))
1376 else if (strstr (name, ".dfl"))
1378 else if (strstr (name, ".dfh"))
1380 else if (strstr (name, ".sp"))
1382 else if (strstr (name, ".pp"))
1384 else if (strstr (name, ".di"))
1386 else if (strstr (name, ".si"))
1388 else if (strstr (name, ".db"))
1390 else if (strstr (name, ".lp"))
1392 else if (strstr (name, ".tb"))
1394 else if (strstr (name, ".rt"))
1396 else if (strstr (name, ".cpl"))
1398 else if (strstr (name, ".rs"))
1400 else if (strstr (name, ".mc"))
1402 else if (strstr (name, ".it"))
1404 else if (strstr (name, ".id"))
1406 else if (strstr (name, ".da"))
1408 else if (strstr (name, ".dd"))
1410 else if (strstr (name, ".ss"))
1412 else if (strstr (name, ".ri"))
1414 else if (strstr (name, ".ed"))
1416 else if (strstr (name, ".bn"))
1418 else if (strstr (name, ".ia"))
1420 else if (strstr (name, ".vm"))
1431 lookup_specifier (const char *name)
1433 if (strchr (name, '%'))
1435 if (strstr (name, "AR[K%]") != NULL)
1436 return IA64_RS_AR_K;
1437 if (strstr (name, "AR[UNAT]") != NULL)
1438 return IA64_RS_AR_UNAT;
1439 if (strstr (name, "AR%, % in 8") != NULL)
1441 if (strstr (name, "AR%, % in 48") != NULL)
1443 if (strstr (name, "BR%") != NULL)
1445 if (strstr (name, "CR[IIB%]") != NULL)
1446 return IA64_RS_CR_IIB;
1447 if (strstr (name, "CR[IRR%]") != NULL)
1448 return IA64_RS_CR_IRR;
1449 if (strstr (name, "CR[LRR%]") != NULL)
1450 return IA64_RS_CR_LRR;
1451 if (strstr (name, "CR%") != NULL)
1453 if (strstr (name, "DAHR%, % in 0") != NULL)
1454 return IA64_RS_DAHR;
1455 if (strstr (name, "FR%, % in 0") != NULL)
1457 if (strstr (name, "FR%, % in 2") != NULL)
1459 if (strstr (name, "GR%") != NULL)
1461 if (strstr (name, "PR%, % in 1 ") != NULL)
1463 if (strstr (name, "PR%, % in 16 ") != NULL)
1466 warn (_("don't know how to specify %% dependency %s\n"),
1469 else if (strchr (name, '#'))
1471 if (strstr (name, "CPUID#") != NULL)
1472 return IA64_RS_CPUID;
1473 if (strstr (name, "DBR#") != NULL)
1475 if (strstr (name, "IBR#") != NULL)
1477 if (strstr (name, "MSR#") != NULL)
1479 if (strstr (name, "PKR#") != NULL)
1481 if (strstr (name, "PMC#") != NULL)
1483 if (strstr (name, "PMD#") != NULL)
1485 if (strstr (name, "RR#") != NULL)
1488 warn (_("Don't know how to specify # dependency %s\n"),
1491 else if (CONST_STRNEQ (name, "AR[FPSR]"))
1492 return IA64_RS_AR_FPSR;
1493 else if (CONST_STRNEQ (name, "AR["))
1495 else if (CONST_STRNEQ (name, "CR["))
1497 else if (CONST_STRNEQ (name, "PSR."))
1499 else if (strcmp (name, "InService*") == 0)
1500 return IA64_RS_INSERVICE;
1501 else if (strcmp (name, "GR0") == 0)
1503 else if (strcmp (name, "CFM") == 0)
1505 else if (strcmp (name, "PR63") == 0)
1506 return IA64_RS_PR63;
1507 else if (strcmp (name, "RSE") == 0)
1514 print_dependency_table (void)
1520 for (i=0;i < iclen;i++)
1522 if (ics[i]->is_class)
1526 if (ics[i]->comment)
1527 warn (_("IC:%s [%s] has no terminals or sub-classes\n"),
1528 ics[i]->name, ics[i]->comment);
1530 warn (_("IC:%s has no terminals or sub-classes\n"),
1536 if (!ics[i]->terminal_resolved && !ics[i]->orphan)
1538 if (ics[i]->comment)
1539 warn (_("no insns mapped directly to terminal IC %s [%s]"),
1540 ics[i]->name, ics[i]->comment);
1542 warn (_("no insns mapped directly to terminal IC %s\n"),
1548 for (i = 0; i < iclen; i++)
1552 mark_used (ics[i], 1);
1553 warn (_("class %s is defined but not used\n"),
1559 for (i = 0; i < rdepslen; i++)
1561 static const char *mode_str[] = { "RAW", "WAW", "WAR" };
1563 if (rdeps[i]->total_chks == 0)
1565 if (rdeps[i]->total_regs)
1566 warn (_("Warning: rsrc %s (%s) has no chks\n"),
1567 rdeps[i]->name, mode_str[rdeps[i]->mode]);
1569 warn (_("Warning: rsrc %s (%s) has no chks or regs\n"),
1570 rdeps[i]->name, mode_str[rdeps[i]->mode]);
1572 else if (rdeps[i]->total_regs == 0)
1573 warn (_("rsrc %s (%s) has no regs\n"),
1574 rdeps[i]->name, mode_str[rdeps[i]->mode]);
1578 /* The dependencies themselves. */
1579 printf ("static const struct ia64_dependency\ndependencies[] = {\n");
1580 for (i = 0; i < rdepslen; i++)
1582 /* '%', '#', AR[], CR[], or PSR. indicates we need to specify the actual
1584 int specifier = lookup_specifier (rdeps[i]->name);
1585 int regindex = lookup_regindex (rdeps[i]->name, specifier);
1587 printf (" { \"%s\", %d, %d, %d, %d, ",
1588 rdeps[i]->name, specifier,
1589 (int)rdeps[i]->mode, (int)rdeps[i]->semantics, regindex);
1590 if (rdeps[i]->semantics == IA64_DVS_OTHER)
1592 const char *quote, *rest;
1595 rest = rdeps[i]->extra;
1596 quote = strchr (rest, '\"');
1597 while (quote != NULL)
1599 printf ("%.*s\\\"", (int) (quote - rest), rest);
1601 quote = strchr (rest, '\"');
1603 printf ("%s\", ", rest);
1611 /* And dependency lists. */
1612 for (i=0;i < dlistlen;i++)
1615 printf ("static const unsigned short dep%d[] = {\n ", i);
1616 for (j=0;j < dlists[i]->len; j++)
1618 len += printf ("%d, ", dlists[i]->deps[j]);
1625 printf ("\n};\n\n");
1628 /* And opcode dependency list. */
1629 printf ("#define NELS(X) (sizeof(X)/sizeof(X[0]))\n");
1630 printf ("static const struct ia64_opcode_dependency\n");
1631 printf ("op_dependencies[] = {\n");
1632 for (i = 0; i < opdeplen; i++)
1635 if (opdeps[i]->chk == -1)
1636 printf ("0, NULL, ");
1638 printf ("NELS(dep%d), dep%d, ", opdeps[i]->chk, opdeps[i]->chk);
1639 if (opdeps[i]->reg == -1)
1640 printf ("0, NULL, ");
1642 printf ("NELS(dep%d), dep%d, ", opdeps[i]->reg, opdeps[i]->reg);
1649 /* Add STR to the string table. */
1650 static struct string_entry *
1651 insert_string (char *str)
1653 int start = 0, end = strtablen;
1656 if (strtablen == strtabtotlen)
1659 string_table = (struct string_entry **)
1660 xrealloc (string_table,
1661 sizeof (struct string_entry **) * strtabtotlen);
1667 string_table[0] = tmalloc (struct string_entry);
1668 string_table[0]->s = xstrdup (str);
1669 string_table[0]->num = 0;
1670 return string_table[0];
1673 if (strcmp (str, string_table[strtablen - 1]->s) > 0)
1675 else if (strcmp (str, string_table[0]->s) < 0)
1683 i = (start + end) / 2;
1684 c = strcmp (str, string_table[i]->s);
1689 return string_table[i];
1698 for (; i > 0 && i < strtablen; i--)
1699 if (strcmp (str, string_table[i - 1]->s) > 0)
1702 for (; i < strtablen; i++)
1703 if (strcmp (str, string_table[i]->s) < 0)
1706 for (x = strtablen - 1; x >= i; x--)
1708 string_table[x + 1] = string_table[x];
1709 string_table[x + 1]->num = x + 1;
1712 string_table[i] = tmalloc (struct string_entry);
1713 string_table[i]->s = xstrdup (str);
1714 string_table[i]->num = i;
1717 return string_table[i];
1720 static struct bittree *
1721 make_bittree_entry (void)
1723 struct bittree *res = tmalloc (struct bittree);
1726 res->bits[0] = NULL;
1727 res->bits[1] = NULL;
1728 res->bits[2] = NULL;
1730 res->bits_to_skip = 0;
1735 static struct disent *
1736 add_dis_table_ent (struct disent *which, int insn, int order,
1737 ci_t completer_index)
1747 while (ent->nexte != NULL)
1750 ent = (ent->nexte = tmalloc (struct disent));
1754 ent = tmalloc (struct disent);
1755 ent->next_ent = disinsntable;
1762 ent->priority = order;
1764 while (completer_index != 1)
1766 ci = (ci << 1) | (completer_index & 1);
1767 completer_index >>= 1;
1769 ent->completer_index = ci;
1774 finish_distable (void)
1776 struct disent *ent = disinsntable;
1777 struct disent *prev = ent;
1779 ent->ournum = 32768;
1780 while ((ent = ent->next_ent) != NULL)
1782 ent->ournum = prev->ournum + prev->nextcnt + 1;
1788 insert_bit_table_ent (struct bittree *curr_ent, int bit, ia64_insn opcode,
1789 ia64_insn mask, int opcodenum, int order,
1790 ci_t completer_index)
1794 struct bittree *next;
1798 struct disent *nent = add_dis_table_ent (curr_ent->disent,
1801 curr_ent->disent = nent;
1805 m = ((ia64_insn) 1) << bit;
1808 b = (opcode & m) ? 1 : 0;
1812 next = curr_ent->bits[b];
1815 next = make_bittree_entry ();
1816 curr_ent->bits[b] = next;
1818 insert_bit_table_ent (next, bit - 1, opcode, mask, opcodenum, order,
1823 add_dis_entry (struct bittree *first, ia64_insn opcode, ia64_insn mask,
1824 int opcodenum, struct completer_entry *ent, ci_t completer_index)
1826 if (completer_index & ((ci_t)1 << 32) )
1831 ia64_insn newopcode = (opcode & (~ ent->mask)) | ent->bits;
1832 add_dis_entry (first, newopcode, mask, opcodenum, ent->addl_entries,
1833 (completer_index << 1) | 1);
1835 if (ent->is_terminal)
1837 insert_bit_table_ent (bittree, 40, newopcode, mask,
1838 opcodenum, opcode_count - ent->order - 1,
1839 (completer_index << 1) | 1);
1841 completer_index <<= 1;
1842 ent = ent->alternative;
1846 /* This optimization pass combines multiple "don't care" nodes. */
1848 compact_distree (struct bittree *ent)
1850 #define IS_SKIP(ent) \
1851 ((ent->bits[2] !=NULL) \
1852 && (ent->bits[0] == NULL && ent->bits[1] == NULL && ent->skip_flag == 0))
1855 struct bittree *nent = ent;
1858 while (IS_SKIP (nent))
1861 nent = nent->bits[2];
1866 struct bittree *next = ent->bits[2];
1868 ent->bits[0] = nent->bits[0];
1869 ent->bits[1] = nent->bits[1];
1870 ent->bits[2] = nent->bits[2];
1871 ent->disent = nent->disent;
1873 ent->bits_to_skip = bitcnt;
1874 while (next != nent)
1876 struct bittree *b = next;
1877 next = next->bits[2];
1883 for (x = 0; x < 3; x++)
1885 struct bittree *i = ent->bits[x];
1888 compact_distree (i);
1892 static unsigned char *insn_list;
1893 static int insn_list_len = 0;
1894 static int tot_insn_list_len = 0;
1896 /* Generate the disassembler state machine corresponding to the tree
1899 gen_dis_table (struct bittree *ent)
1902 int our_offset = insn_list_len;
1904 int totbits = bitsused;
1907 int zero_dest = 0; /* Initialize this with 0 to keep gcc quiet... */
1909 /* If this is a terminal entry, there's no point in skipping any
1911 if (ent->skip_flag && ent->bits[0] == NULL && ent->bits[1] == NULL &&
1912 ent->bits[2] == NULL)
1914 if (ent->disent == NULL)
1920 /* Calculate the amount of space needed for this entry, or at least
1921 a conservatively large approximation. */
1925 for (x = 1; x < 3; x++)
1926 if (ent->bits[x] != NULL)
1929 if (ent->disent != NULL)
1931 if (ent->bits[2] != NULL)
1937 /* Now allocate the space. */
1938 needed_bytes = (totbits + 7) / 8;
1939 if ((needed_bytes + insn_list_len) > tot_insn_list_len)
1941 tot_insn_list_len += 256;
1942 insn_list = (unsigned char *) xrealloc (insn_list, tot_insn_list_len);
1944 our_offset = insn_list_len;
1945 insn_list_len += needed_bytes;
1946 memset (insn_list + our_offset, 0, needed_bytes);
1948 /* Encode the skip entry by setting bit 6 set in the state op field,
1949 and store the # of bits to skip immediately after. */
1953 insn_list[our_offset + 0] |= 0x40 | ((ent->bits_to_skip >> 2) & 0xf);
1954 insn_list[our_offset + 1] |= ((ent->bits_to_skip & 3) << 6);
1957 #define IS_ONLY_IFZERO(ENT) \
1958 ((ENT)->bits[0] != NULL && (ENT)->bits[1] == NULL && (ENT)->bits[2] == NULL \
1959 && (ENT)->disent == NULL && (ENT)->skip_flag == 0)
1961 /* Store an "if (bit is zero)" instruction by setting bit 7 in the
1963 if (ent->bits[0] != NULL)
1965 struct bittree *nent = ent->bits[0];
1968 insn_list[our_offset] |= 0x80;
1970 /* We can encode sequences of multiple "if (bit is zero)" tests
1971 by storing the # of zero bits to check in the lower 3 bits of
1972 the instruction. However, this only applies if the state
1973 solely tests for a zero bit. */
1975 if (IS_ONLY_IFZERO (ent))
1977 while (IS_ONLY_IFZERO (nent) && zero_count < 7)
1979 nent = nent->bits[0];
1983 insn_list[our_offset + 0] |= zero_count;
1985 zero_dest = insn_list_len;
1986 gen_dis_table (nent);
1989 /* Now store the remaining tests. We also handle a sole "termination
1990 entry" by storing it as an "any bit" test. */
1992 for (x = 1; x < 3; x++)
1994 if (ent->bits[x] != NULL || (x == 2 && ent->disent != NULL))
1996 struct bittree *i = ent->bits[x];
2002 /* If the instruction being branched to only consists of
2003 a termination entry, use the termination entry as the
2004 place to branch to instead. */
2005 if (i->bits[0] == NULL && i->bits[1] == NULL
2006 && i->bits[2] == NULL && i->disent != NULL)
2008 idest = i->disent->ournum;
2012 idest = insn_list_len - our_offset;
2015 idest = ent->disent->ournum;
2017 /* If the destination offset for the if (bit is 1) test is less
2018 than 256 bytes away, we can store it as 8-bits instead of 16;
2019 the instruction has bit 5 set for the 16-bit address, and bit
2020 4 for the 8-bit address. Since we've already allocated 16
2021 bits for the address we need to deallocate the space.
2023 Note that branchings within the table are relative, and
2024 there are no branches that branch past our instruction yet
2025 so we do not need to adjust any other offsets. */
2030 int start = our_offset + bitsused / 8 + 1;
2032 memmove (insn_list + start,
2033 insn_list + start + 1,
2034 insn_list_len - (start + 1));
2039 insn_list[our_offset] |= 0x10;
2043 insn_list[our_offset] |= 0x20;
2047 /* An instruction which solely consists of a termination
2048 marker and whose disassembly name index is < 4096
2049 can be stored in 16 bits. The encoding is slightly
2050 odd; the upper 4 bits of the instruction are 0x3, and
2051 bit 3 loses its normal meaning. */
2053 if (ent->bits[0] == NULL && ent->bits[1] == NULL
2054 && ent->bits[2] == NULL && ent->skip_flag == 0
2055 && ent->disent != NULL
2056 && ent->disent->ournum < (32768 + 4096))
2058 int start = our_offset + bitsused / 8 + 1;
2060 memmove (insn_list + start,
2061 insn_list + start + 1,
2062 insn_list_len - (start + 1));
2068 insn_list[our_offset] |= 0x30;
2072 insn_list[our_offset] |= 0x08;
2081 else if (! (id & 32768))
2085 printf ("%d: if (1) goto %d\n", our_offset, id);
2087 printf ("%d: try %d\n", our_offset, id);
2090 /* Store the address of the entry being branched to. */
2091 while (currbits >= 0)
2093 unsigned char *byte = insn_list + our_offset + bitsused / 8;
2095 if (idest & (1 << currbits))
2096 *byte |= (1 << (7 - (bitsused % 8)));
2102 /* Now generate the states for the entry being branched to. */
2111 printf ("%d: skipping %d\n", our_offset, ent->bits_to_skip);
2113 if (ent->bits[0] != NULL)
2114 printf ("%d: if (0:%d) goto %d\n", our_offset, zero_count + 1,
2118 if (bitsused != totbits)
2123 print_dis_table (void)
2126 struct disent *cent = disinsntable;
2128 printf ("static const char dis_table[] = {\n");
2129 for (x = 0; x < insn_list_len; x++)
2131 if ((x > 0) && ((x % 12) == 0))
2134 printf ("0x%02x, ", insn_list[x]);
2136 printf ("\n};\n\n");
2138 printf ("static const struct ia64_dis_names ia64_dis_names[] = {\n");
2139 while (cent != NULL)
2141 struct disent *ent = cent;
2145 printf ("{ 0x%lx, %d, %d, %d },\n", ( long ) ent->completer_index,
2146 ent->insn, (ent->nexte != NULL ? 1 : 0),
2150 cent = cent->next_ent;
2156 generate_disassembler (void)
2160 bittree = make_bittree_entry ();
2162 for (i = 0; i < otlen; i++)
2164 struct main_entry *ptr = ordered_table[i];
2166 if (ptr->opcode->type != IA64_TYPE_DYN)
2167 add_dis_entry (bittree,
2168 ptr->opcode->opcode, ptr->opcode->mask,
2170 ptr->completers, 1);
2173 compact_distree (bittree);
2175 gen_dis_table (bittree);
2181 print_string_table (void)
2184 char lbuf[80], buf[80];
2187 printf ("static const char * const ia64_strings[] = {\n");
2190 for (x = 0; x < strtablen; x++)
2194 if (strlen (string_table[x]->s) > 75)
2197 sprintf (buf, " \"%s\",", string_table[x]->s);
2200 if ((blen + len) > 75)
2202 printf (" %s\n", lbuf);
2211 printf (" %s\n", lbuf);
2216 static struct completer_entry **glist;
2217 static int glistlen = 0;
2218 static int glisttotlen = 0;
2220 /* If the completer trees ENT1 and ENT2 are equal, return 1. */
2223 completer_entries_eq (struct completer_entry *ent1,
2224 struct completer_entry *ent2)
2226 while (ent1 != NULL && ent2 != NULL)
2228 if (ent1->name->num != ent2->name->num
2229 || ent1->bits != ent2->bits
2230 || ent1->mask != ent2->mask
2231 || ent1->is_terminal != ent2->is_terminal
2232 || ent1->dependencies != ent2->dependencies
2233 || ent1->order != ent2->order)
2236 if (! completer_entries_eq (ent1->addl_entries, ent2->addl_entries))
2239 ent1 = ent1->alternative;
2240 ent2 = ent2->alternative;
2243 return ent1 == ent2;
2246 /* Insert ENT into the global list of completers and return it. If an
2247 equivalent entry (according to completer_entries_eq) already exists,
2248 it is returned instead. */
2249 static struct completer_entry *
2250 insert_gclist (struct completer_entry *ent)
2258 ent->addl_entries = insert_gclist (ent->addl_entries);
2259 ent->alternative = insert_gclist (ent->alternative);
2264 if (glisttotlen == glistlen)
2267 glist = (struct completer_entry **)
2268 xrealloc (glist, sizeof (struct completer_entry *) * glisttotlen);
2278 if (ent->name->num < glist[0]->name->num)
2280 else if (ent->name->num > glist[end - 1]->name->num)
2288 i = (start + end) / 2;
2289 c = ent->name->num - glist[i]->name->num;
2296 && ent->name->num == glist[i - 1]->name->num)
2310 while (i < glistlen)
2312 if (ent->name->num != glist[i]->name->num)
2315 if (completer_entries_eq (ent, glist[i]))
2323 for (; i > 0 && i < glistlen; i--)
2324 if (ent->name->num >= glist[i - 1]->name->num)
2327 for (; i < glistlen; i++)
2328 if (ent->name->num < glist[i]->name->num)
2331 for (x = glistlen - 1; x >= i; x--)
2332 glist[x + 1] = glist[x];
2341 get_prefix_len (const char *name)
2345 if (name[0] == '\0')
2348 c = strchr (name, '.');
2352 return strlen (name);
2356 compute_completer_bits (struct main_entry *ment, struct completer_entry *ent)
2360 compute_completer_bits (ment, ent->addl_entries);
2362 if (ent->is_terminal)
2365 ia64_insn our_bits = ent->bits;
2366 struct completer_entry *p = ent->parent;
2370 while (p != NULL && ! p->is_terminal)
2376 p_bits = ment->opcode->opcode;
2378 for (x = 0; x < 64; x++)
2380 ia64_insn m = ((ia64_insn) 1) << x;
2382 if ((p_bits & m) != (our_bits & m))
2387 ent->bits = our_bits;
2396 ent = ent->alternative;
2400 /* Find identical completer trees that are used in different
2401 instructions and collapse their entries. */
2403 collapse_redundant_completers (void)
2405 struct main_entry *ptr;
2408 for (ptr = maintable; ptr != NULL; ptr = ptr->next)
2410 if (ptr->completers == NULL)
2413 compute_completer_bits (ptr, ptr->completers);
2414 ptr->completers = insert_gclist (ptr->completers);
2417 /* The table has been finalized, now number the indexes. */
2418 for (x = 0; x < glistlen; x++)
2423 /* Attach two lists of dependencies to each opcode.
2424 1) all resources which, when already marked in use, conflict with this
2426 2) all resources which must be marked in use when this opcode is used
2429 insert_opcode_dependencies (struct ia64_opcode *opc,
2430 struct completer_entry *cmp ATTRIBUTE_UNUSED)
2432 /* Note all resources which point to this opcode. rfi has the most chks
2433 (79) and cmpxchng has the most regs (54) so 100 here should be enough. */
2436 unsigned short regs[256];
2438 unsigned short chks[256];
2439 /* Flag insns for which no class matched; there should be none. */
2440 int no_class_found = 1;
2442 for (i = 0; i < rdepslen; i++)
2444 struct rdep *rs = rdeps[i];
2447 if (strcmp (opc->name, "cmp.eq.and") == 0
2448 && CONST_STRNEQ (rs->name, "PR%")
2450 no_class_found = 99;
2452 for (j=0; j < rs->nregs;j++)
2456 if (in_iclass (opc, ics[rs->regs[j]], NULL, NULL, &ic_note))
2458 /* We can ignore ic_note 11 for non PR resources. */
2459 if (ic_note == 11 && ! CONST_STRNEQ (rs->name, "PR"))
2462 if (ic_note != 0 && rs->regnotes[j] != 0
2463 && ic_note != rs->regnotes[j]
2464 && !(ic_note == 11 && rs->regnotes[j] == 1))
2465 warn (_("IC note %d in opcode %s (IC:%s) conflicts with resource %s note %d\n"),
2466 ic_note, opc->name, ics[rs->regs[j]]->name,
2467 rs->name, rs->regnotes[j]);
2468 /* Instruction class notes override resource notes.
2469 So far, only note 11 applies to an IC instead of a resource,
2470 and note 11 implies note 1. */
2472 regs[nregs++] = RDEP(ic_note, i);
2474 regs[nregs++] = RDEP(rs->regnotes[j], i);
2480 for (j = 0; j < rs->nchks; j++)
2484 if (in_iclass (opc, ics[rs->chks[j]], NULL, NULL, &ic_note))
2486 /* We can ignore ic_note 11 for non PR resources. */
2487 if (ic_note == 11 && ! CONST_STRNEQ (rs->name, "PR"))
2490 if (ic_note != 0 && rs->chknotes[j] != 0
2491 && ic_note != rs->chknotes[j]
2492 && !(ic_note == 11 && rs->chknotes[j] == 1))
2493 warn (_("IC note %d for opcode %s (IC:%s) conflicts with resource %s note %d\n"),
2494 ic_note, opc->name, ics[rs->chks[j]]->name,
2495 rs->name, rs->chknotes[j]);
2497 chks[nchks++] = RDEP(ic_note, i);
2499 chks[nchks++] = RDEP(rs->chknotes[j], i);
2507 warn (_("opcode %s has no class (ops %d %d %d)\n"),
2509 opc->operands[0], opc->operands[1], opc->operands[2]);
2511 return insert_dependencies (nchks, chks, nregs, regs);
2515 insert_completer_entry (struct ia64_opcode *opc, struct main_entry *tabent,
2518 struct completer_entry **ptr = &tabent->completers;
2519 struct completer_entry *parent = NULL;
2520 char pcopy[129], *prefix;
2523 if (strlen (opc->name) > 128)
2526 strcpy (pcopy, opc->name);
2527 prefix = pcopy + get_prefix_len (pcopy);
2529 if (prefix[0] != '\0')
2534 int need_new_ent = 1;
2535 int plen = get_prefix_len (prefix);
2536 struct string_entry *sent;
2538 at_end = (prefix[plen] == '\0');
2539 prefix[plen] = '\0';
2540 sent = insert_string (prefix);
2542 while (*ptr != NULL)
2544 int cmpres = sent->num - (*ptr)->name->num;
2552 ptr = &((*ptr)->alternative);
2557 struct completer_entry *nent = tmalloc (struct completer_entry);
2560 nent->parent = parent;
2561 nent->addl_entries = NULL;
2562 nent->alternative = *ptr;
2564 nent->is_terminal = 0;
2565 nent->dependencies = -1;
2571 ptr = &((*ptr)->addl_entries);
2576 if ((*ptr)->is_terminal)
2579 (*ptr)->is_terminal = 1;
2580 (*ptr)->mask = (ia64_insn)-1;
2581 (*ptr)->bits = opc->opcode;
2582 (*ptr)->dependencies = insert_opcode_dependencies (opc, *ptr);
2583 (*ptr)->order = order;
2587 print_completer_entry (struct completer_entry *ent)
2590 ia64_insn mask = ent->mask, bits = ent->bits;
2594 while (! (mask & 1))
2601 if (bits & 0xffffffff00000000LL)
2605 printf (" { 0x%x, 0x%x, %d, %d, %d, %d, %d, %d },\n",
2609 ent->alternative != NULL ? ent->alternative->num : -1,
2610 ent->addl_entries != NULL ? ent->addl_entries->num : -1,
2612 ent->is_terminal ? 1 : 0,
2617 print_completer_table (void)
2621 printf ("static const struct ia64_completer_table\ncompleter_table[] = {\n");
2622 for (x = 0; x < glistlen; x++)
2623 print_completer_entry (glist[x]);
2628 opcodes_eq (struct ia64_opcode *opc1, struct ia64_opcode *opc2)
2633 if ((opc1->mask != opc2->mask) || (opc1->type != opc2->type)
2634 || (opc1->num_outputs != opc2->num_outputs)
2635 || (opc1->flags != opc2->flags))
2638 for (x = 0; x < 5; x++)
2639 if (opc1->operands[x] != opc2->operands[x])
2642 plen1 = get_prefix_len (opc1->name);
2643 plen2 = get_prefix_len (opc2->name);
2645 if (plen1 == plen2 && (memcmp (opc1->name, opc2->name, plen1) == 0))
2652 add_opcode_entry (struct ia64_opcode *opc)
2654 struct main_entry **place;
2655 struct string_entry *name;
2659 if (strlen (opc->name) > 128)
2663 strcpy (prefix, opc->name);
2664 prefix[get_prefix_len (prefix)] = '\0';
2665 name = insert_string (prefix);
2667 /* Walk the list of opcode table entries. If it's a new
2668 instruction, allocate and fill in a new entry. Note
2669 the main table is alphabetical by opcode name. */
2671 while (*place != NULL)
2673 if ((*place)->name->num == name->num
2674 && opcodes_eq ((*place)->opcode, opc))
2679 if ((*place)->name->num > name->num)
2682 place = &((*place)->next);
2686 struct main_entry *nent = tmalloc (struct main_entry);
2690 nent->next = *place;
2691 nent->completers = 0;
2694 if (otlen == ottotlen)
2697 ordered_table = (struct main_entry **)
2698 xrealloc (ordered_table, sizeof (struct main_entry *) * ottotlen);
2700 ordered_table[otlen++] = nent;
2703 insert_completer_entry (opc, *place, opcode_count++);
2707 print_main_table (void)
2709 struct main_entry *ptr = maintable;
2712 printf ("static const struct ia64_main_table\nmain_table[] = {\n");
2715 printf (" { %d, %d, %d, 0x",
2718 ptr->opcode->num_outputs);
2719 opcode_fprintf_vma (stdout, ptr->opcode->opcode);
2721 opcode_fprintf_vma (stdout, ptr->opcode->mask);
2722 printf ("ull, { %d, %d, %d, %d, %d }, 0x%x, %d, },\n",
2723 ptr->opcode->operands[0],
2724 ptr->opcode->operands[1],
2725 ptr->opcode->operands[2],
2726 ptr->opcode->operands[3],
2727 ptr->opcode->operands[4],
2729 ptr->completers->num);
2731 ptr->main_index = tindex++;
2739 shrink (struct ia64_opcode *table)
2743 for (curr_opcode = 0; table[curr_opcode].name != NULL; curr_opcode++)
2745 add_opcode_entry (table + curr_opcode);
2746 if (table[curr_opcode].num_outputs == 2
2747 && ((table[curr_opcode].operands[0] == IA64_OPND_P1
2748 && table[curr_opcode].operands[1] == IA64_OPND_P2)
2749 || (table[curr_opcode].operands[0] == IA64_OPND_P2
2750 && table[curr_opcode].operands[1] == IA64_OPND_P1)))
2752 struct ia64_opcode *alias = tmalloc(struct ia64_opcode);
2755 *alias = table[curr_opcode];
2756 for (i = 2; i < NELEMS (alias->operands); ++i)
2757 alias->operands[i - 1] = alias->operands[i];
2758 alias->operands[NELEMS (alias->operands) - 1] = IA64_OPND_NIL;
2759 --alias->num_outputs;
2760 alias->flags |= PSEUDO;
2761 add_opcode_entry (alias);
2767 /* Program options. */
2768 #define OPTION_SRCDIR 200
2770 struct option long_options[] =
2772 {"srcdir", required_argument, NULL, OPTION_SRCDIR},
2773 {"debug", no_argument, NULL, 'd'},
2774 {"version", no_argument, NULL, 'V'},
2775 {"help", no_argument, NULL, 'h'},
2776 {0, no_argument, NULL, 0}
2780 print_version (void)
2782 printf ("%s: version 1.0\n", program_name);
2787 usage (FILE * stream, int status)
2789 fprintf (stream, "Usage: %s [-V | --version] [-d | --debug] [--srcdir=dirname] [--help]\n",
2795 main (int argc, char **argv)
2797 extern int chdir (char *);
2798 char *srcdir = NULL;
2801 program_name = *argv;
2802 xmalloc_set_program_name (program_name);
2804 while ((c = getopt_long (argc, argv, "vVdh", long_options, 0)) != EOF)
2829 if (chdir (srcdir) != 0)
2830 fail (_("unable to change directory to \"%s\", errno = %s\n"),
2831 srcdir, strerror (errno));
2833 load_insn_classes ();
2834 load_dependencies ();
2836 shrink (ia64_opcodes_a);
2837 shrink (ia64_opcodes_b);
2838 shrink (ia64_opcodes_f);
2839 shrink (ia64_opcodes_i);
2840 shrink (ia64_opcodes_m);
2841 shrink (ia64_opcodes_x);
2842 shrink (ia64_opcodes_d);
2844 collapse_redundant_completers ();
2846 printf ("/* This file is automatically generated by ia64-gen. Do not edit! */\n");
2847 printf ("/* Copyright 2007 Free Software Foundation, Inc.\n\
2849 This file is part of the GNU opcodes library.\n\
2851 This library is free software; you can redistribute it and/or modify\n\
2852 it under the terms of the GNU General Public License as published by\n\
2853 the Free Software Foundation; either version 3, or (at your option)\n\
2854 any later version.\n\
2856 It is distributed in the hope that it will be useful, but WITHOUT\n\
2857 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\n\
2858 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public\n\
2859 License for more details.\n\
2861 You should have received a copy of the GNU General Public License\n\
2862 along with this program; see the file COPYING. If not, write to the\n\
2863 Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA\n\
2864 02110-1301, USA. */\n");
2866 print_string_table ();
2867 print_dependency_table ();
2868 print_completer_table ();
2869 print_main_table ();
2871 generate_disassembler ();