| 1 |
18 |
khays |
/* ia64-opc.c -- Functions to access the compacted opcode table
|
| 2 |
|
|
Copyright 1999, 2000, 2001, 2003, 2005, 2007, 2009 Free Software Foundation, Inc.
|
| 3 |
|
|
Written by Bob Manson of Cygnus Solutions, <manson@cygnus.com>
|
| 4 |
|
|
|
| 5 |
|
|
This file is part of the GNU opcodes library.
|
| 6 |
|
|
|
| 7 |
|
|
This library is free software; you can redistribute it and/or modify
|
| 8 |
|
|
it under the terms of the GNU General Public License as published by
|
| 9 |
|
|
the Free Software Foundation; either version 3, or (at your option)
|
| 10 |
|
|
any later version.
|
| 11 |
|
|
|
| 12 |
|
|
It is distributed in the hope that it will be useful, but WITHOUT
|
| 13 |
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
| 14 |
|
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
| 15 |
|
|
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, 51 Franklin Street - Fifth Floor, Boston,
|
| 20 |
|
|
MA 02110-1301, USA. */
|
| 21 |
|
|
|
| 22 |
|
|
#include "ansidecl.h"
|
| 23 |
|
|
#include "sysdep.h"
|
| 24 |
|
|
#include "libiberty.h"
|
| 25 |
|
|
#include "ia64-asmtab.h"
|
| 26 |
|
|
#include "ia64-asmtab.c"
|
| 27 |
|
|
|
| 28 |
|
|
static void get_opc_prefix (const char **, char *);
|
| 29 |
|
|
static short int find_string_ent (const char *);
|
| 30 |
|
|
static short int find_main_ent (short int);
|
| 31 |
|
|
static short int find_completer (short int, short int, const char *);
|
| 32 |
|
|
static ia64_insn apply_completer (ia64_insn, int);
|
| 33 |
|
|
static int extract_op_bits (int, int, int);
|
| 34 |
|
|
static int extract_op (int, int *, unsigned int *);
|
| 35 |
|
|
static int opcode_verify (ia64_insn, int, enum ia64_insn_type);
|
| 36 |
|
|
static int locate_opcode_ent (ia64_insn, enum ia64_insn_type);
|
| 37 |
|
|
static struct ia64_opcode *make_ia64_opcode
|
| 38 |
|
|
(ia64_insn, const char *, int, int);
|
| 39 |
|
|
static struct ia64_opcode *ia64_find_matching_opcode
|
| 40 |
|
|
(const char *, short int);
|
| 41 |
|
|
|
| 42 |
|
|
const struct ia64_templ_desc ia64_templ_desc[16] =
|
| 43 |
|
|
{
|
| 44 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_I, IA64_UNIT_I }, "MII" }, /* 0 */
|
| 45 |
|
|
{ 2, { IA64_UNIT_M, IA64_UNIT_I, IA64_UNIT_I }, "MII" },
|
| 46 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_L, IA64_UNIT_X }, "MLX" },
|
| 47 |
|
|
{ 0, { 0, }, "-3-" },
|
| 48 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_M, IA64_UNIT_I }, "MMI" }, /* 4 */
|
| 49 |
|
|
{ 1, { IA64_UNIT_M, IA64_UNIT_M, IA64_UNIT_I }, "MMI" },
|
| 50 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_F, IA64_UNIT_I }, "MFI" },
|
| 51 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_M, IA64_UNIT_F }, "MMF" },
|
| 52 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_I, IA64_UNIT_B }, "MIB" }, /* 8 */
|
| 53 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_B, IA64_UNIT_B }, "MBB" },
|
| 54 |
|
|
{ 0, { 0, }, "-a-" },
|
| 55 |
|
|
{ 0, { IA64_UNIT_B, IA64_UNIT_B, IA64_UNIT_B }, "BBB" },
|
| 56 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_M, IA64_UNIT_B }, "MMB" }, /* c */
|
| 57 |
|
|
{ 0, { 0, }, "-d-" },
|
| 58 |
|
|
{ 0, { IA64_UNIT_M, IA64_UNIT_F, IA64_UNIT_B }, "MFB" },
|
| 59 |
|
|
{ 0, { 0, }, "-f-" },
|
| 60 |
|
|
};
|
| 61 |
|
|
|
| 62 |
|
|
|
| 63 |
|
|
/* Copy the prefix contained in *PTR (up to a '.' or a NUL) to DEST.
|
| 64 |
|
|
PTR will be adjusted to point to the start of the next portion
|
| 65 |
|
|
of the opcode, or at the NUL character. */
|
| 66 |
|
|
|
| 67 |
|
|
static void
|
| 68 |
|
|
get_opc_prefix (const char **ptr, char *dest)
|
| 69 |
|
|
{
|
| 70 |
|
|
char *c = strchr (*ptr, '.');
|
| 71 |
|
|
if (c != NULL)
|
| 72 |
|
|
{
|
| 73 |
|
|
memcpy (dest, *ptr, c - *ptr);
|
| 74 |
|
|
dest[c - *ptr] = '\0';
|
| 75 |
|
|
*ptr = c + 1;
|
| 76 |
|
|
}
|
| 77 |
|
|
else
|
| 78 |
|
|
{
|
| 79 |
|
|
int l = strlen (*ptr);
|
| 80 |
|
|
memcpy (dest, *ptr, l);
|
| 81 |
|
|
dest[l] = '\0';
|
| 82 |
|
|
*ptr += l;
|
| 83 |
|
|
}
|
| 84 |
|
|
}
|
| 85 |
|
|
|
| 86 |
|
|
/* Find the index of the entry in the string table corresponding to
|
| 87 |
|
|
STR; return -1 if one does not exist. */
|
| 88 |
|
|
|
| 89 |
|
|
static short
|
| 90 |
|
|
find_string_ent (const char *str)
|
| 91 |
|
|
{
|
| 92 |
|
|
short start = 0;
|
| 93 |
|
|
short end = sizeof (ia64_strings) / sizeof (const char *);
|
| 94 |
|
|
short i = (start + end) / 2;
|
| 95 |
|
|
|
| 96 |
|
|
if (strcmp (str, ia64_strings[end - 1]) > 0)
|
| 97 |
|
|
{
|
| 98 |
|
|
return -1;
|
| 99 |
|
|
}
|
| 100 |
|
|
while (start <= end)
|
| 101 |
|
|
{
|
| 102 |
|
|
int c = strcmp (str, ia64_strings[i]);
|
| 103 |
|
|
if (c < 0)
|
| 104 |
|
|
{
|
| 105 |
|
|
end = i - 1;
|
| 106 |
|
|
}
|
| 107 |
|
|
else if (c == 0)
|
| 108 |
|
|
{
|
| 109 |
|
|
return i;
|
| 110 |
|
|
}
|
| 111 |
|
|
else
|
| 112 |
|
|
{
|
| 113 |
|
|
start = i + 1;
|
| 114 |
|
|
}
|
| 115 |
|
|
i = (start + end) / 2;
|
| 116 |
|
|
}
|
| 117 |
|
|
return -1;
|
| 118 |
|
|
}
|
| 119 |
|
|
|
| 120 |
|
|
/* Find the opcode in the main opcode table whose name is STRINGINDEX, or
|
| 121 |
|
|
return -1 if one does not exist. */
|
| 122 |
|
|
|
| 123 |
|
|
static short
|
| 124 |
|
|
find_main_ent (short nameindex)
|
| 125 |
|
|
{
|
| 126 |
|
|
short start = 0;
|
| 127 |
|
|
short end = sizeof (main_table) / sizeof (struct ia64_main_table);
|
| 128 |
|
|
short i = (start + end) / 2;
|
| 129 |
|
|
|
| 130 |
|
|
if (nameindex < main_table[0].name_index
|
| 131 |
|
|
|| nameindex > main_table[end - 1].name_index)
|
| 132 |
|
|
{
|
| 133 |
|
|
return -1;
|
| 134 |
|
|
}
|
| 135 |
|
|
while (start <= end)
|
| 136 |
|
|
{
|
| 137 |
|
|
if (nameindex < main_table[i].name_index)
|
| 138 |
|
|
{
|
| 139 |
|
|
end = i - 1;
|
| 140 |
|
|
}
|
| 141 |
|
|
else if (nameindex == main_table[i].name_index)
|
| 142 |
|
|
{
|
| 143 |
|
|
while (i > 0 && main_table[i - 1].name_index == nameindex)
|
| 144 |
|
|
{
|
| 145 |
|
|
i--;
|
| 146 |
|
|
}
|
| 147 |
|
|
return i;
|
| 148 |
|
|
}
|
| 149 |
|
|
else
|
| 150 |
|
|
{
|
| 151 |
|
|
start = i + 1;
|
| 152 |
|
|
}
|
| 153 |
|
|
i = (start + end) / 2;
|
| 154 |
|
|
}
|
| 155 |
|
|
return -1;
|
| 156 |
|
|
}
|
| 157 |
|
|
|
| 158 |
|
|
/* Find the index of the entry in the completer table that is part of
|
| 159 |
|
|
MAIN_ENT (starting from PREV_COMPLETER) that matches NAME, or
|
| 160 |
|
|
return -1 if one does not exist. */
|
| 161 |
|
|
|
| 162 |
|
|
static short
|
| 163 |
|
|
find_completer (short main_ent, short prev_completer, const char *name)
|
| 164 |
|
|
{
|
| 165 |
|
|
short name_index = find_string_ent (name);
|
| 166 |
|
|
|
| 167 |
|
|
if (name_index < 0)
|
| 168 |
|
|
{
|
| 169 |
|
|
return -1;
|
| 170 |
|
|
}
|
| 171 |
|
|
|
| 172 |
|
|
if (prev_completer == -1)
|
| 173 |
|
|
{
|
| 174 |
|
|
prev_completer = main_table[main_ent].completers;
|
| 175 |
|
|
}
|
| 176 |
|
|
else
|
| 177 |
|
|
{
|
| 178 |
|
|
prev_completer = completer_table[prev_completer].subentries;
|
| 179 |
|
|
}
|
| 180 |
|
|
|
| 181 |
|
|
while (prev_completer != -1)
|
| 182 |
|
|
{
|
| 183 |
|
|
if (completer_table[prev_completer].name_index == name_index)
|
| 184 |
|
|
{
|
| 185 |
|
|
return prev_completer;
|
| 186 |
|
|
}
|
| 187 |
|
|
prev_completer = completer_table[prev_completer].alternative;
|
| 188 |
|
|
}
|
| 189 |
|
|
return -1;
|
| 190 |
|
|
}
|
| 191 |
|
|
|
| 192 |
|
|
/* Apply the completer referred to by COMPLETER_INDEX to OPCODE, and
|
| 193 |
|
|
return the result. */
|
| 194 |
|
|
|
| 195 |
|
|
static ia64_insn
|
| 196 |
|
|
apply_completer (ia64_insn opcode, int completer_index)
|
| 197 |
|
|
{
|
| 198 |
|
|
ia64_insn mask = completer_table[completer_index].mask;
|
| 199 |
|
|
ia64_insn bits = completer_table[completer_index].bits;
|
| 200 |
|
|
int shiftamt = (completer_table[completer_index].offset & 63);
|
| 201 |
|
|
|
| 202 |
|
|
mask = mask << shiftamt;
|
| 203 |
|
|
bits = bits << shiftamt;
|
| 204 |
|
|
opcode = (opcode & ~mask) | bits;
|
| 205 |
|
|
return opcode;
|
| 206 |
|
|
}
|
| 207 |
|
|
|
| 208 |
|
|
/* Extract BITS number of bits starting from OP_POINTER + BITOFFSET in
|
| 209 |
|
|
the dis_table array, and return its value. (BITOFFSET is numbered
|
| 210 |
|
|
starting from MSB to LSB, so a BITOFFSET of 0 indicates the MSB of the
|
| 211 |
|
|
first byte in OP_POINTER.) */
|
| 212 |
|
|
|
| 213 |
|
|
static int
|
| 214 |
|
|
extract_op_bits (int op_pointer, int bitoffset, int bits)
|
| 215 |
|
|
{
|
| 216 |
|
|
int res = 0;
|
| 217 |
|
|
|
| 218 |
|
|
op_pointer += (bitoffset / 8);
|
| 219 |
|
|
|
| 220 |
|
|
if (bitoffset % 8)
|
| 221 |
|
|
{
|
| 222 |
|
|
unsigned int op = dis_table[op_pointer++];
|
| 223 |
|
|
int numb = 8 - (bitoffset % 8);
|
| 224 |
|
|
int mask = (1 << numb) - 1;
|
| 225 |
|
|
int bata = (bits < numb) ? bits : numb;
|
| 226 |
|
|
int delta = numb - bata;
|
| 227 |
|
|
|
| 228 |
|
|
res = (res << bata) | ((op & mask) >> delta);
|
| 229 |
|
|
bitoffset += bata;
|
| 230 |
|
|
bits -= bata;
|
| 231 |
|
|
}
|
| 232 |
|
|
while (bits >= 8)
|
| 233 |
|
|
{
|
| 234 |
|
|
res = (res << 8) | (dis_table[op_pointer++] & 255);
|
| 235 |
|
|
bits -= 8;
|
| 236 |
|
|
}
|
| 237 |
|
|
if (bits > 0)
|
| 238 |
|
|
{
|
| 239 |
|
|
unsigned int op = (dis_table[op_pointer++] & 255);
|
| 240 |
|
|
res = (res << bits) | (op >> (8 - bits));
|
| 241 |
|
|
}
|
| 242 |
|
|
return res;
|
| 243 |
|
|
}
|
| 244 |
|
|
|
| 245 |
|
|
/* Examine the state machine entry at OP_POINTER in the dis_table
|
| 246 |
|
|
array, and extract its values into OPVAL and OP. The length of the
|
| 247 |
|
|
state entry in bits is returned. */
|
| 248 |
|
|
|
| 249 |
|
|
static int
|
| 250 |
|
|
extract_op (int op_pointer, int *opval, unsigned int *op)
|
| 251 |
|
|
{
|
| 252 |
|
|
int oplen = 5;
|
| 253 |
|
|
|
| 254 |
|
|
*op = dis_table[op_pointer];
|
| 255 |
|
|
|
| 256 |
|
|
if ((*op) & 0x40)
|
| 257 |
|
|
{
|
| 258 |
|
|
opval[0] = extract_op_bits (op_pointer, oplen, 5);
|
| 259 |
|
|
oplen += 5;
|
| 260 |
|
|
}
|
| 261 |
|
|
switch ((*op) & 0x30)
|
| 262 |
|
|
{
|
| 263 |
|
|
case 0x10:
|
| 264 |
|
|
{
|
| 265 |
|
|
opval[1] = extract_op_bits (op_pointer, oplen, 8);
|
| 266 |
|
|
oplen += 8;
|
| 267 |
|
|
opval[1] += op_pointer;
|
| 268 |
|
|
break;
|
| 269 |
|
|
}
|
| 270 |
|
|
case 0x20:
|
| 271 |
|
|
{
|
| 272 |
|
|
opval[1] = extract_op_bits (op_pointer, oplen, 16);
|
| 273 |
|
|
if (! (opval[1] & 32768))
|
| 274 |
|
|
{
|
| 275 |
|
|
opval[1] += op_pointer;
|
| 276 |
|
|
}
|
| 277 |
|
|
oplen += 16;
|
| 278 |
|
|
break;
|
| 279 |
|
|
}
|
| 280 |
|
|
case 0x30:
|
| 281 |
|
|
{
|
| 282 |
|
|
oplen--;
|
| 283 |
|
|
opval[2] = extract_op_bits (op_pointer, oplen, 12);
|
| 284 |
|
|
oplen += 12;
|
| 285 |
|
|
opval[2] |= 32768;
|
| 286 |
|
|
break;
|
| 287 |
|
|
}
|
| 288 |
|
|
}
|
| 289 |
|
|
if (((*op) & 0x08) && (((*op) & 0x30) != 0x30))
|
| 290 |
|
|
{
|
| 291 |
|
|
opval[2] = extract_op_bits (op_pointer, oplen, 16);
|
| 292 |
|
|
oplen += 16;
|
| 293 |
|
|
if (! (opval[2] & 32768))
|
| 294 |
|
|
{
|
| 295 |
|
|
opval[2] += op_pointer;
|
| 296 |
|
|
}
|
| 297 |
|
|
}
|
| 298 |
|
|
return oplen;
|
| 299 |
|
|
}
|
| 300 |
|
|
|
| 301 |
|
|
/* Returns a non-zero value if the opcode in the main_table list at
|
| 302 |
|
|
PLACE matches OPCODE and is of type TYPE. */
|
| 303 |
|
|
|
| 304 |
|
|
static int
|
| 305 |
|
|
opcode_verify (ia64_insn opcode, int place, enum ia64_insn_type type)
|
| 306 |
|
|
{
|
| 307 |
|
|
if (main_table[place].opcode_type != type)
|
| 308 |
|
|
{
|
| 309 |
|
|
return 0;
|
| 310 |
|
|
}
|
| 311 |
|
|
if (main_table[place].flags
|
| 312 |
|
|
& (IA64_OPCODE_F2_EQ_F3 | IA64_OPCODE_LEN_EQ_64MCNT))
|
| 313 |
|
|
{
|
| 314 |
|
|
const struct ia64_operand *o1, *o2;
|
| 315 |
|
|
ia64_insn f2, f3;
|
| 316 |
|
|
|
| 317 |
|
|
if (main_table[place].flags & IA64_OPCODE_F2_EQ_F3)
|
| 318 |
|
|
{
|
| 319 |
|
|
o1 = elf64_ia64_operands + IA64_OPND_F2;
|
| 320 |
|
|
o2 = elf64_ia64_operands + IA64_OPND_F3;
|
| 321 |
|
|
(*o1->extract) (o1, opcode, &f2);
|
| 322 |
|
|
(*o2->extract) (o2, opcode, &f3);
|
| 323 |
|
|
if (f2 != f3)
|
| 324 |
|
|
return 0;
|
| 325 |
|
|
}
|
| 326 |
|
|
else
|
| 327 |
|
|
{
|
| 328 |
|
|
ia64_insn len, count;
|
| 329 |
|
|
|
| 330 |
|
|
/* length must equal 64-count: */
|
| 331 |
|
|
o1 = elf64_ia64_operands + IA64_OPND_LEN6;
|
| 332 |
|
|
o2 = elf64_ia64_operands + main_table[place].operands[2];
|
| 333 |
|
|
(*o1->extract) (o1, opcode, &len);
|
| 334 |
|
|
(*o2->extract) (o2, opcode, &count);
|
| 335 |
|
|
if (len != 64 - count)
|
| 336 |
|
|
return 0;
|
| 337 |
|
|
}
|
| 338 |
|
|
}
|
| 339 |
|
|
return 1;
|
| 340 |
|
|
}
|
| 341 |
|
|
|
| 342 |
|
|
/* Find an instruction entry in the ia64_dis_names array that matches
|
| 343 |
|
|
opcode OPCODE and is of type TYPE. Returns either a positive index
|
| 344 |
|
|
into the array, or a negative value if an entry for OPCODE could
|
| 345 |
|
|
not be found. Checks all matches and returns the one with the highest
|
| 346 |
|
|
priority. */
|
| 347 |
|
|
|
| 348 |
|
|
static int
|
| 349 |
|
|
locate_opcode_ent (ia64_insn opcode, enum ia64_insn_type type)
|
| 350 |
|
|
{
|
| 351 |
|
|
int currtest[41];
|
| 352 |
|
|
int bitpos[41];
|
| 353 |
|
|
int op_ptr[41];
|
| 354 |
|
|
int currstatenum = 0;
|
| 355 |
|
|
short found_disent = -1;
|
| 356 |
|
|
short found_priority = -1;
|
| 357 |
|
|
|
| 358 |
|
|
currtest[currstatenum] = 0;
|
| 359 |
|
|
op_ptr[currstatenum] = 0;
|
| 360 |
|
|
bitpos[currstatenum] = 40;
|
| 361 |
|
|
|
| 362 |
|
|
while (1)
|
| 363 |
|
|
{
|
| 364 |
|
|
int op_pointer = op_ptr[currstatenum];
|
| 365 |
|
|
unsigned int op;
|
| 366 |
|
|
int currbitnum = bitpos[currstatenum];
|
| 367 |
|
|
int oplen;
|
| 368 |
|
|
int opval[3] = {0};
|
| 369 |
|
|
int next_op;
|
| 370 |
|
|
int currbit;
|
| 371 |
|
|
|
| 372 |
|
|
oplen = extract_op (op_pointer, opval, &op);
|
| 373 |
|
|
|
| 374 |
|
|
bitpos[currstatenum] = currbitnum;
|
| 375 |
|
|
|
| 376 |
|
|
/* Skip opval[0] bits in the instruction. */
|
| 377 |
|
|
if (op & 0x40)
|
| 378 |
|
|
{
|
| 379 |
|
|
currbitnum -= opval[0];
|
| 380 |
|
|
}
|
| 381 |
|
|
|
| 382 |
|
|
/* The value of the current bit being tested. */
|
| 383 |
|
|
currbit = opcode & (((ia64_insn) 1) << currbitnum) ? 1 : 0;
|
| 384 |
|
|
next_op = -1;
|
| 385 |
|
|
|
| 386 |
|
|
/* We always perform the tests specified in the current state in
|
| 387 |
|
|
a particular order, falling through to the next test if the
|
| 388 |
|
|
previous one failed. */
|
| 389 |
|
|
switch (currtest[currstatenum])
|
| 390 |
|
|
{
|
| 391 |
|
|
case 0:
|
| 392 |
|
|
currtest[currstatenum]++;
|
| 393 |
|
|
if (currbit == 0 && (op & 0x80))
|
| 394 |
|
|
{
|
| 395 |
|
|
/* Check for a zero bit. If this test solely checks for
|
| 396 |
|
|
a zero bit, we can check for up to 8 consecutive zero
|
| 397 |
|
|
bits (the number to check is specified by the lower 3
|
| 398 |
|
|
bits in the state code.)
|
| 399 |
|
|
|
| 400 |
|
|
If the state instruction matches, we go to the very
|
| 401 |
|
|
next state instruction; otherwise, try the next test. */
|
| 402 |
|
|
|
| 403 |
|
|
if ((op & 0xf8) == 0x80)
|
| 404 |
|
|
{
|
| 405 |
|
|
int count = op & 0x7;
|
| 406 |
|
|
int x;
|
| 407 |
|
|
|
| 408 |
|
|
for (x = 0; x <= count; x++)
|
| 409 |
|
|
{
|
| 410 |
|
|
int i =
|
| 411 |
|
|
opcode & (((ia64_insn) 1) << (currbitnum - x)) ? 1 : 0;
|
| 412 |
|
|
if (i)
|
| 413 |
|
|
{
|
| 414 |
|
|
break;
|
| 415 |
|
|
}
|
| 416 |
|
|
}
|
| 417 |
|
|
if (x > count)
|
| 418 |
|
|
{
|
| 419 |
|
|
next_op = op_pointer + ((oplen + 7) / 8);
|
| 420 |
|
|
currbitnum -= count;
|
| 421 |
|
|
break;
|
| 422 |
|
|
}
|
| 423 |
|
|
}
|
| 424 |
|
|
else if (! currbit)
|
| 425 |
|
|
{
|
| 426 |
|
|
next_op = op_pointer + ((oplen + 7) / 8);
|
| 427 |
|
|
break;
|
| 428 |
|
|
}
|
| 429 |
|
|
}
|
| 430 |
|
|
/* FALLTHROUGH */
|
| 431 |
|
|
case 1:
|
| 432 |
|
|
/* If the bit in the instruction is one, go to the state
|
| 433 |
|
|
instruction specified by opval[1]. */
|
| 434 |
|
|
currtest[currstatenum]++;
|
| 435 |
|
|
if (currbit && (op & 0x30) != 0 && ((op & 0x30) != 0x30))
|
| 436 |
|
|
{
|
| 437 |
|
|
next_op = opval[1];
|
| 438 |
|
|
break;
|
| 439 |
|
|
}
|
| 440 |
|
|
/* FALLTHROUGH */
|
| 441 |
|
|
case 2:
|
| 442 |
|
|
/* Don't care. Skip the current bit and go to the state
|
| 443 |
|
|
instruction specified by opval[2].
|
| 444 |
|
|
|
| 445 |
|
|
An encoding of 0x30 is special; this means that a 12-bit
|
| 446 |
|
|
offset into the ia64_dis_names[] array is specified. */
|
| 447 |
|
|
currtest[currstatenum]++;
|
| 448 |
|
|
if ((op & 0x08) || ((op & 0x30) == 0x30))
|
| 449 |
|
|
{
|
| 450 |
|
|
next_op = opval[2];
|
| 451 |
|
|
break;
|
| 452 |
|
|
}
|
| 453 |
|
|
}
|
| 454 |
|
|
|
| 455 |
|
|
/* If bit 15 is set in the address of the next state, an offset
|
| 456 |
|
|
in the ia64_dis_names array was specified instead. We then
|
| 457 |
|
|
check to see if an entry in the list of opcodes matches the
|
| 458 |
|
|
opcode we were given; if so, we have succeeded. */
|
| 459 |
|
|
|
| 460 |
|
|
if ((next_op >= 0) && (next_op & 32768))
|
| 461 |
|
|
{
|
| 462 |
|
|
short disent = next_op & 32767;
|
| 463 |
|
|
short priority = -1;
|
| 464 |
|
|
|
| 465 |
|
|
if (next_op > 65535)
|
| 466 |
|
|
{
|
| 467 |
|
|
abort ();
|
| 468 |
|
|
}
|
| 469 |
|
|
|
| 470 |
|
|
/* Run through the list of opcodes to check, trying to find
|
| 471 |
|
|
one that matches. */
|
| 472 |
|
|
while (disent >= 0)
|
| 473 |
|
|
{
|
| 474 |
|
|
int place = ia64_dis_names[disent].insn_index;
|
| 475 |
|
|
|
| 476 |
|
|
priority = ia64_dis_names[disent].priority;
|
| 477 |
|
|
|
| 478 |
|
|
if (opcode_verify (opcode, place, type)
|
| 479 |
|
|
&& priority > found_priority)
|
| 480 |
|
|
{
|
| 481 |
|
|
break;
|
| 482 |
|
|
}
|
| 483 |
|
|
if (ia64_dis_names[disent].next_flag)
|
| 484 |
|
|
{
|
| 485 |
|
|
disent++;
|
| 486 |
|
|
}
|
| 487 |
|
|
else
|
| 488 |
|
|
{
|
| 489 |
|
|
disent = -1;
|
| 490 |
|
|
}
|
| 491 |
|
|
}
|
| 492 |
|
|
|
| 493 |
|
|
if (disent >= 0)
|
| 494 |
|
|
{
|
| 495 |
|
|
found_disent = disent;
|
| 496 |
|
|
found_priority = priority;
|
| 497 |
|
|
}
|
| 498 |
|
|
/* Try the next test in this state, regardless of whether a match
|
| 499 |
|
|
was found. */
|
| 500 |
|
|
next_op = -2;
|
| 501 |
|
|
}
|
| 502 |
|
|
|
| 503 |
|
|
/* next_op == -1 is "back up to the previous state".
|
| 504 |
|
|
next_op == -2 is "stay in this state and try the next test".
|
| 505 |
|
|
Otherwise, transition to the state indicated by next_op. */
|
| 506 |
|
|
|
| 507 |
|
|
if (next_op == -1)
|
| 508 |
|
|
{
|
| 509 |
|
|
currstatenum--;
|
| 510 |
|
|
if (currstatenum < 0)
|
| 511 |
|
|
{
|
| 512 |
|
|
return found_disent;
|
| 513 |
|
|
}
|
| 514 |
|
|
}
|
| 515 |
|
|
else if (next_op >= 0)
|
| 516 |
|
|
{
|
| 517 |
|
|
currstatenum++;
|
| 518 |
|
|
bitpos[currstatenum] = currbitnum - 1;
|
| 519 |
|
|
op_ptr[currstatenum] = next_op;
|
| 520 |
|
|
currtest[currstatenum] = 0;
|
| 521 |
|
|
}
|
| 522 |
|
|
}
|
| 523 |
|
|
}
|
| 524 |
|
|
|
| 525 |
|
|
/* Construct an ia64_opcode entry based on OPCODE, NAME and PLACE. */
|
| 526 |
|
|
|
| 527 |
|
|
static struct ia64_opcode *
|
| 528 |
|
|
make_ia64_opcode (ia64_insn opcode, const char *name, int place, int depind)
|
| 529 |
|
|
{
|
| 530 |
|
|
struct ia64_opcode *res =
|
| 531 |
|
|
(struct ia64_opcode *) xmalloc (sizeof (struct ia64_opcode));
|
| 532 |
|
|
res->name = xstrdup (name);
|
| 533 |
|
|
res->type = main_table[place].opcode_type;
|
| 534 |
|
|
res->num_outputs = main_table[place].num_outputs;
|
| 535 |
|
|
res->opcode = opcode;
|
| 536 |
|
|
res->mask = main_table[place].mask;
|
| 537 |
|
|
res->operands[0] = main_table[place].operands[0];
|
| 538 |
|
|
res->operands[1] = main_table[place].operands[1];
|
| 539 |
|
|
res->operands[2] = main_table[place].operands[2];
|
| 540 |
|
|
res->operands[3] = main_table[place].operands[3];
|
| 541 |
|
|
res->operands[4] = main_table[place].operands[4];
|
| 542 |
|
|
res->flags = main_table[place].flags;
|
| 543 |
|
|
res->ent_index = place;
|
| 544 |
|
|
res->dependencies = &op_dependencies[depind];
|
| 545 |
|
|
return res;
|
| 546 |
|
|
}
|
| 547 |
|
|
|
| 548 |
|
|
/* Determine the ia64_opcode entry for the opcode specified by INSN
|
| 549 |
|
|
and TYPE. If a valid entry is not found, return NULL. */
|
| 550 |
|
|
struct ia64_opcode *
|
| 551 |
|
|
ia64_dis_opcode (ia64_insn insn, enum ia64_insn_type type)
|
| 552 |
|
|
{
|
| 553 |
|
|
int disent = locate_opcode_ent (insn, type);
|
| 554 |
|
|
|
| 555 |
|
|
if (disent < 0)
|
| 556 |
|
|
{
|
| 557 |
|
|
return NULL;
|
| 558 |
|
|
}
|
| 559 |
|
|
else
|
| 560 |
|
|
{
|
| 561 |
|
|
unsigned int cb = ia64_dis_names[disent].completer_index;
|
| 562 |
|
|
static char name[128];
|
| 563 |
|
|
int place = ia64_dis_names[disent].insn_index;
|
| 564 |
|
|
int ci = main_table[place].completers;
|
| 565 |
|
|
ia64_insn tinsn = main_table[place].opcode;
|
| 566 |
|
|
|
| 567 |
|
|
strcpy (name, ia64_strings [main_table[place].name_index]);
|
| 568 |
|
|
|
| 569 |
|
|
while (cb)
|
| 570 |
|
|
{
|
| 571 |
|
|
if (cb & 1)
|
| 572 |
|
|
{
|
| 573 |
|
|
int cname = completer_table[ci].name_index;
|
| 574 |
|
|
|
| 575 |
|
|
tinsn = apply_completer (tinsn, ci);
|
| 576 |
|
|
|
| 577 |
|
|
if (ia64_strings[cname][0] != '\0')
|
| 578 |
|
|
{
|
| 579 |
|
|
strcat (name, ".");
|
| 580 |
|
|
strcat (name, ia64_strings[cname]);
|
| 581 |
|
|
}
|
| 582 |
|
|
if (cb != 1)
|
| 583 |
|
|
{
|
| 584 |
|
|
ci = completer_table[ci].subentries;
|
| 585 |
|
|
}
|
| 586 |
|
|
}
|
| 587 |
|
|
else
|
| 588 |
|
|
{
|
| 589 |
|
|
ci = completer_table[ci].alternative;
|
| 590 |
|
|
}
|
| 591 |
|
|
if (ci < 0)
|
| 592 |
|
|
{
|
| 593 |
|
|
abort ();
|
| 594 |
|
|
}
|
| 595 |
|
|
cb = cb >> 1;
|
| 596 |
|
|
}
|
| 597 |
|
|
if (tinsn != (insn & main_table[place].mask))
|
| 598 |
|
|
{
|
| 599 |
|
|
abort ();
|
| 600 |
|
|
}
|
| 601 |
|
|
return make_ia64_opcode (insn, name, place,
|
| 602 |
|
|
completer_table[ci].dependencies);
|
| 603 |
|
|
}
|
| 604 |
|
|
}
|
| 605 |
|
|
|
| 606 |
|
|
/* Search the main_opcode table starting from PLACE for an opcode that
|
| 607 |
|
|
matches NAME. Return NULL if one is not found. */
|
| 608 |
|
|
|
| 609 |
|
|
static struct ia64_opcode *
|
| 610 |
|
|
ia64_find_matching_opcode (const char *name, short place)
|
| 611 |
|
|
{
|
| 612 |
|
|
char op[129];
|
| 613 |
|
|
const char *suffix;
|
| 614 |
|
|
short name_index;
|
| 615 |
|
|
|
| 616 |
|
|
if (strlen (name) > 128)
|
| 617 |
|
|
{
|
| 618 |
|
|
return NULL;
|
| 619 |
|
|
}
|
| 620 |
|
|
suffix = name;
|
| 621 |
|
|
get_opc_prefix (&suffix, op);
|
| 622 |
|
|
name_index = find_string_ent (op);
|
| 623 |
|
|
if (name_index < 0)
|
| 624 |
|
|
{
|
| 625 |
|
|
return NULL;
|
| 626 |
|
|
}
|
| 627 |
|
|
|
| 628 |
|
|
while (main_table[place].name_index == name_index)
|
| 629 |
|
|
{
|
| 630 |
|
|
const char *curr_suffix = suffix;
|
| 631 |
|
|
ia64_insn curr_insn = main_table[place].opcode;
|
| 632 |
|
|
short completer = -1;
|
| 633 |
|
|
|
| 634 |
|
|
do {
|
| 635 |
|
|
if (suffix[0] == '\0')
|
| 636 |
|
|
{
|
| 637 |
|
|
completer = find_completer (place, completer, suffix);
|
| 638 |
|
|
}
|
| 639 |
|
|
else
|
| 640 |
|
|
{
|
| 641 |
|
|
get_opc_prefix (&curr_suffix, op);
|
| 642 |
|
|
completer = find_completer (place, completer, op);
|
| 643 |
|
|
}
|
| 644 |
|
|
if (completer != -1)
|
| 645 |
|
|
{
|
| 646 |
|
|
curr_insn = apply_completer (curr_insn, completer);
|
| 647 |
|
|
}
|
| 648 |
|
|
} while (completer != -1 && curr_suffix[0] != '\0');
|
| 649 |
|
|
|
| 650 |
|
|
if (completer != -1 && curr_suffix[0] == '\0'
|
| 651 |
|
|
&& completer_table[completer].terminal_completer)
|
| 652 |
|
|
{
|
| 653 |
|
|
int depind = completer_table[completer].dependencies;
|
| 654 |
|
|
return make_ia64_opcode (curr_insn, name, place, depind);
|
| 655 |
|
|
}
|
| 656 |
|
|
else
|
| 657 |
|
|
{
|
| 658 |
|
|
place++;
|
| 659 |
|
|
}
|
| 660 |
|
|
}
|
| 661 |
|
|
return NULL;
|
| 662 |
|
|
}
|
| 663 |
|
|
|
| 664 |
|
|
/* Find the next opcode after PREV_ENT that matches PREV_ENT, or return NULL
|
| 665 |
|
|
if one does not exist.
|
| 666 |
|
|
|
| 667 |
|
|
It is the caller's responsibility to invoke ia64_free_opcode () to
|
| 668 |
|
|
release any resources used by the returned entry. */
|
| 669 |
|
|
|
| 670 |
|
|
struct ia64_opcode *
|
| 671 |
|
|
ia64_find_next_opcode (struct ia64_opcode *prev_ent)
|
| 672 |
|
|
{
|
| 673 |
|
|
return ia64_find_matching_opcode (prev_ent->name,
|
| 674 |
|
|
prev_ent->ent_index + 1);
|
| 675 |
|
|
}
|
| 676 |
|
|
|
| 677 |
|
|
/* Find the first opcode that matches NAME, or return NULL if it does
|
| 678 |
|
|
not exist.
|
| 679 |
|
|
|
| 680 |
|
|
It is the caller's responsibility to invoke ia64_free_opcode () to
|
| 681 |
|
|
release any resources used by the returned entry. */
|
| 682 |
|
|
|
| 683 |
|
|
struct ia64_opcode *
|
| 684 |
|
|
ia64_find_opcode (const char *name)
|
| 685 |
|
|
{
|
| 686 |
|
|
char op[129];
|
| 687 |
|
|
const char *suffix;
|
| 688 |
|
|
short place;
|
| 689 |
|
|
short name_index;
|
| 690 |
|
|
|
| 691 |
|
|
if (strlen (name) > 128)
|
| 692 |
|
|
{
|
| 693 |
|
|
return NULL;
|
| 694 |
|
|
}
|
| 695 |
|
|
suffix = name;
|
| 696 |
|
|
get_opc_prefix (&suffix, op);
|
| 697 |
|
|
name_index = find_string_ent (op);
|
| 698 |
|
|
if (name_index < 0)
|
| 699 |
|
|
{
|
| 700 |
|
|
return NULL;
|
| 701 |
|
|
}
|
| 702 |
|
|
|
| 703 |
|
|
place = find_main_ent (name_index);
|
| 704 |
|
|
|
| 705 |
|
|
if (place < 0)
|
| 706 |
|
|
{
|
| 707 |
|
|
return NULL;
|
| 708 |
|
|
}
|
| 709 |
|
|
return ia64_find_matching_opcode (name, place);
|
| 710 |
|
|
}
|
| 711 |
|
|
|
| 712 |
|
|
/* Free any resources used by ENT. */
|
| 713 |
|
|
void
|
| 714 |
|
|
ia64_free_opcode (struct ia64_opcode *ent)
|
| 715 |
|
|
{
|
| 716 |
|
|
free ((void *)ent->name);
|
| 717 |
|
|
free (ent);
|
| 718 |
|
|
}
|
| 719 |
|
|
|
| 720 |
|
|
const struct ia64_dependency *
|
| 721 |
|
|
ia64_find_dependency (int dep_index)
|
| 722 |
|
|
{
|
| 723 |
|
|
dep_index = DEP(dep_index);
|
| 724 |
|
|
|
| 725 |
|
|
if (dep_index < 0
|
| 726 |
|
|
|| dep_index >= (int) ARRAY_SIZE (dependencies))
|
| 727 |
|
|
return NULL;
|
| 728 |
|
|
|
| 729 |
|
|
return &dependencies[dep_index];
|
| 730 |
|
|
}
|
