1// -*- mode:c++ -*-
2
3// Copyright (c) 2010 ARM Limited
4// All rights reserved
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder. You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Redistribution and use in source and binary forms, with or without
16// modification, are permitted provided that the following conditions are
17// met: redistributions of source code must retain the above copyright
18// notice, this list of conditions and the following disclaimer;
19// redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution;
22// neither the name of the copyright holders nor the names of its
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37//
38// Authors: Gabe Black
39
40let {{
41
42 header_output = ""
43 decoder_output = ""
44 exec_output = ""
45
46 calcGECode = '''
47 CondCodes = insertBits(CondCodes, 19, 16, resTemp);
48 '''
49
50 calcQCode = '''
51 CondCodes = CondCodes | ((resTemp & 1) << 27);
52 '''
53
54 calcCcCode = '''
55 uint16_t _ic, _iv, _iz, _in;
56 _in = (resTemp >> %(negBit)d) & 1;
57 _iz = (resTemp == 0);
58 _iv = %(ivValue)s & 1;
59 _ic = %(icValue)s & 1;
60
61 CondCodes = _in << 31 | _iz << 30 | _ic << 29 | _iv << 28 |
62 (CondCodes & 0x0FFFFFFF);
63
64 DPRINTF(Arm, "(in, iz, ic, iv) = (%%d, %%d, %%d, %%d)\\n",
65 _in, _iz, _ic, _iv);
66 '''
67
68 # Dict of code to set the carry flag. (imm, reg, reg-reg)
69 oldC = 'CondCodes<29:>'
70 oldV = 'CondCodes<28:>'
71 carryCode = {
72 "none": (oldC, oldC, oldC),
73 "llbit": (oldC, oldC, oldC),
74 "saturate": ('0', '0', '0'),
75 "overflow": ('0', '0', '0'),
76 "ge": ('0', '0', '0'),
77 "add": ('findCarry(32, resTemp, Op1, secondOp)',
78 'findCarry(32, resTemp, Op1, secondOp)',
79 'findCarry(32, resTemp, Op1, secondOp)'),
80 "sub": ('findCarry(32, resTemp, Op1, ~secondOp)',
81 'findCarry(32, resTemp, Op1, ~secondOp)',
82 'findCarry(32, resTemp, Op1, ~secondOp)'),
83 "rsb": ('findCarry(32, resTemp, secondOp, ~Op1)',
84 'findCarry(32, resTemp, secondOp, ~Op1)',
85 'findCarry(32, resTemp, secondOp, ~Op1)'),
86 "logic": ('(rotC ? bits(secondOp, 31) : %s)' % oldC,
87 'shift_carry_imm(Op2, shiftAmt, shiftType, %s)' % oldC,
88 'shift_carry_rs(Op2, Shift<7:0>, shiftType, %s)' % oldC)
89 }
90 # Dict of code to set the overflow flag.
91 overflowCode = {
92 "none": oldV,
93 "llbit": oldV,
94 "saturate": '0',
95 "overflow": '0',
96 "ge": '0',
97 "add": 'findOverflow(32, resTemp, Op1, secondOp)',
98 "sub": 'findOverflow(32, resTemp, Op1, ~secondOp)',
99 "rsb": 'findOverflow(32, resTemp, secondOp, ~Op1)',
100 "logic": oldV
101 }
102
103 secondOpRe = re.compile("secondOp")
104 immOp2 = "imm"
105 regOp2 = "shift_rm_imm(Op2, shiftAmt, shiftType, CondCodes<29:>)"
106 regRegOp2 = "shift_rm_rs(Op2, Shift<7:0>, shiftType, CondCodes<29:>)"
107
108 def buildImmDataInst(mnem, code, flagType = "logic", suffix = "Imm", \
109 buildCc = True, buildNonCc = True, instFlags = []):
110 cCode = carryCode[flagType]
111 vCode = overflowCode[flagType]
112 negBit = 31
113 if flagType == "llbit":
114 negBit = 63
115 if flagType == "saturate":
116 immCcCode = calcQCode
117 elif flagType == "ge":
118 immCcCode = calcGECode
119 else:
120 immCcCode = calcCcCode % {
121 "icValue": secondOpRe.sub(immOp2, cCode[0]),
122 "ivValue": secondOpRe.sub(immOp2, vCode),
123 "negBit": negBit
124 }
125 immCode = secondOpRe.sub(immOp2, code)
126 immIop = InstObjParams(mnem, mnem.capitalize() + suffix, "DataImmOp",
127 {"code" : immCode,
128 "predicate_test": predicateTest}, instFlags)
129 immIopCc = InstObjParams(mnem + "s", mnem.capitalize() + suffix + "Cc",
130 "DataImmOp",
131 {"code" : immCode + immCcCode,
132 "predicate_test": condPredicateTest}, instFlags)
133
134 def subst(iop):
135 global header_output, decoder_output, exec_output
136 header_output += DataImmDeclare.subst(iop)
137 decoder_output += DataImmConstructor.subst(iop)
138 exec_output += PredOpExecute.subst(iop)
139
140 if buildNonCc:
141 subst(immIop)
142 if buildCc:
143 subst(immIopCc)
144
145 def buildRegDataInst(mnem, code, flagType = "logic", suffix = "Reg", \
146 buildCc = True, buildNonCc = True, instFlags = []):
147 cCode = carryCode[flagType]
148 vCode = overflowCode[flagType]
149 negBit = 31
150 if flagType == "llbit":
151 negBit = 63
152 if flagType == "saturate":
153 regCcCode = calcQCode
154 elif flagType == "ge":
155 regCcCode = calcGECode
156 else:
157 regCcCode = calcCcCode % {
158 "icValue": secondOpRe.sub(regOp2, cCode[1]),
159 "ivValue": secondOpRe.sub(regOp2, vCode),
160 "negBit": negBit
161 }
162 regCode = secondOpRe.sub(regOp2, code)
163 regIop = InstObjParams(mnem, mnem.capitalize() + suffix, "DataRegOp",
164 {"code" : regCode,
165 "predicate_test": predicateTest}, instFlags)
166 regIopCc = InstObjParams(mnem + "s", mnem.capitalize() + suffix + "Cc",
167 "DataRegOp",
168 {"code" : regCode + regCcCode,
169 "predicate_test": condPredicateTest},
170 instFlags)
171
172 def subst(iop):
173 global header_output, decoder_output, exec_output
174 header_output += DataRegDeclare.subst(iop)
175 decoder_output += DataRegConstructor.subst(iop)
176 exec_output += PredOpExecute.subst(iop)
177
178 if buildNonCc:
179 subst(regIop)
180 if buildCc:
181 subst(regIopCc)
182
183 def buildRegRegDataInst(mnem, code, flagType = "logic", \
184 suffix = "RegReg", \
185 buildCc = True, buildNonCc = True):
186 cCode = carryCode[flagType]
187 vCode = overflowCode[flagType]
188 negBit = 31
189 if flagType == "llbit":
190 negBit = 63
191 if flagType == "saturate":
192 regRegCcCode = calcQCode
193 elif flagType == "ge":
194 regRegCcCode = calcGECode
195 else:
196 regRegCcCode = calcCcCode % {
197 "icValue": secondOpRe.sub(regRegOp2, cCode[2]),
198 "ivValue": secondOpRe.sub(regRegOp2, vCode),
199 "negBit": negBit
200 }
201 regRegCode = secondOpRe.sub(regRegOp2, code)
202 regRegIop = InstObjParams(mnem, mnem.capitalize() + suffix,
203 "DataRegRegOp",
204 {"code" : regRegCode,
205 "predicate_test": predicateTest})
206 regRegIopCc = InstObjParams(mnem + "s",
207 mnem.capitalize() + suffix + "Cc",
208 "DataRegRegOp",
209 {"code" : regRegCode + regRegCcCode,
210 "predicate_test": condPredicateTest})
211
212 def subst(iop):
213 global header_output, decoder_output, exec_output
214 header_output += DataRegRegDeclare.subst(iop)
215 decoder_output += DataRegRegConstructor.subst(iop)
216 exec_output += PredOpExecute.subst(iop)
217
218 if buildNonCc:
219 subst(regRegIop)
220 if buildCc:
221 subst(regRegIopCc)
222
223 def buildDataInst(mnem, code, flagType = "logic", \
224 aiw = True, regRegAiw = True,
225 subsPcLr = True):
226 regRegCode = instCode = code
227 if aiw:
228 instCode = "AIW" + instCode
229 if regRegAiw:
230 regRegCode = "AIW" + regRegCode
231
232 buildImmDataInst(mnem, instCode, flagType)
233 buildRegDataInst(mnem, instCode, flagType)
234 buildRegRegDataInst(mnem, regRegCode, flagType)
235 if subsPcLr:
236 code += '''
237 SCTLR sctlr = Sctlr;
238 uint32_t newCpsr =
239 cpsrWriteByInstr(Cpsr | CondCodes, Spsr, 0xF, true, sctlr.nmfi);
240 Cpsr = ~CondCodesMask & newCpsr;
241 CondCodes = CondCodesMask & newCpsr;
242 NextThumb = ((CPSR)newCpsr).t;
243 NextJazelle = ((CPSR)newCpsr).j;
244 ForcedItState = ((((CPSR)newCpsr).it2 << 2) & 0xFC)
245 | (((CPSR)newCpsr).it1 & 0x3);
246 '''
247 buildImmDataInst(mnem + 's', code, flagType,
248 suffix = "ImmPclr", buildCc = False,
249 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
250 buildRegDataInst(mnem + 's', code, flagType,
251 suffix = "RegPclr", buildCc = False,
252 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
253
254 buildDataInst("and", "Dest = resTemp = Op1 & secondOp;")
255 buildDataInst("eor", "Dest = resTemp = Op1 ^ secondOp;")
256 buildDataInst("sub", "Dest = resTemp = Op1 - secondOp;", "sub")
257 buildDataInst("rsb", "Dest = resTemp = secondOp - Op1;", "rsb")
258 buildDataInst("add", "Dest = resTemp = Op1 + secondOp;", "add")
259 buildImmDataInst("adr", '''
260 Dest = resTemp = (PC & ~0x3) +
261 (op1 ? secondOp : -secondOp);
262 ''')
263 buildDataInst("adc", "Dest = resTemp = Op1 + secondOp + %s;" % oldC, "add")
264 buildDataInst("sbc", "Dest = resTemp = Op1 - secondOp - !%s;" % oldC, "sub")
265 buildDataInst("rsc", "Dest = resTemp = secondOp - Op1 - !%s;" % oldC, "rsb")
266 buildDataInst("tst", "resTemp = Op1 & secondOp;", aiw = False)
267 buildDataInst("teq", "resTemp = Op1 ^ secondOp;", aiw = False)
268 buildDataInst("cmp", "resTemp = Op1 - secondOp;", "sub", aiw = False)
269 buildDataInst("cmn", "resTemp = Op1 + secondOp;", "add", aiw = False)
270 buildDataInst("orr", "Dest = resTemp = Op1 | secondOp;")
271 buildDataInst("orn", "Dest = resTemp = Op1 | ~secondOp;", aiw = False)
272 buildDataInst("mov", "Dest = resTemp = secondOp;", regRegAiw = False)
273 buildDataInst("bic", "Dest = resTemp = Op1 & ~secondOp;")
274 buildDataInst("mvn", "Dest = resTemp = ~secondOp;")
275 buildDataInst("movt",
276 "Dest = resTemp = insertBits(Op1, 31, 16, secondOp);",
277 aiw = False)
278
279 buildRegDataInst("qadd", '''
280 int32_t midRes;
281 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw);
282 Dest = midRes;
283 ''', flagType="saturate", buildNonCc=False)
284 buildRegDataInst("qadd16", '''
285 int32_t midRes;
286 for (unsigned i = 0; i < 2; i++) {
287 int high = (i + 1) * 16 - 1;
288 int low = i * 16;
289 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
290 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
291 saturateOp<16>(midRes, arg1, arg2);
292 replaceBits(resTemp, high, low, midRes);
293 }
294 Dest = resTemp;
295 ''', flagType="none", buildCc=False)
296 buildRegDataInst("qadd8", '''
297 int32_t midRes;
298 for (unsigned i = 0; i < 4; i++) {
299 int high = (i + 1) * 8 - 1;
300 int low = i * 8;
301 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
302 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
303 saturateOp<8>(midRes, arg1, arg2);
304 replaceBits(resTemp, high, low, midRes);
305 }
306 Dest = resTemp;
307 ''', flagType="none", buildCc=False)
308 buildRegDataInst("qdadd", '''
309 int32_t midRes;
310 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
311 saturateOp<32>(midRes, Op1.sw, midRes);
312 Dest = midRes;
313 ''', flagType="saturate", buildNonCc=False)
314 buildRegDataInst("qsub", '''
315 int32_t midRes;
316 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw, true);
317 Dest = midRes;
318 ''', flagType="saturate")
319 buildRegDataInst("qsub16", '''
320 int32_t midRes;
321 for (unsigned i = 0; i < 2; i++) {
322 int high = (i + 1) * 16 - 1;
323 int low = i * 16;
324 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
325 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
326 saturateOp<16>(midRes, arg1, arg2, true);
327 replaceBits(resTemp, high, low, midRes);
328 }
329 Dest = resTemp;
330 ''', flagType="none", buildCc=False)
331 buildRegDataInst("qsub8", '''
332 int32_t midRes;
333 for (unsigned i = 0; i < 4; i++) {
334 int high = (i + 1) * 8 - 1;
335 int low = i * 8;
336 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
337 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
338 saturateOp<8>(midRes, arg1, arg2, true);
339 replaceBits(resTemp, high, low, midRes);
340 }
341 Dest = resTemp;
342 ''', flagType="none", buildCc=False)
343 buildRegDataInst("qdsub", '''
344 int32_t midRes;
345 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
346 saturateOp<32>(midRes, Op1.sw, midRes, true);
347 Dest = midRes;
348 ''', flagType="saturate", buildNonCc=False)
349 buildRegDataInst("qasx", '''
350 int32_t midRes;
351 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
352 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
353 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
354 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
355 saturateOp<16>(midRes, arg1Low, arg2High, true);
356 replaceBits(resTemp, 15, 0, midRes);
357 saturateOp<16>(midRes, arg1High, arg2Low);
358 replaceBits(resTemp, 31, 16, midRes);
359 Dest = resTemp;
360 ''', flagType="none", buildCc=False)
361 buildRegDataInst("qsax", '''
362 int32_t midRes;
363 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
364 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
365 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
366 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
367 saturateOp<16>(midRes, arg1Low, arg2High);
368 replaceBits(resTemp, 15, 0, midRes);
369 saturateOp<16>(midRes, arg1High, arg2Low, true);
370 replaceBits(resTemp, 31, 16, midRes);
371 Dest = resTemp;
372 ''', flagType="none", buildCc=False)
373
374 buildRegDataInst("sadd8", '''
375 uint32_t geBits = 0;
376 resTemp = 0;
377 for (unsigned i = 0; i < 4; i++) {
378 int high = (i + 1) * 8 - 1;
379 int low = i * 8;
380 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) +
381 sext<8>(bits(Op2.sw, high, low));
382 replaceBits(resTemp, high, low, midRes);
383 if (midRes >= 0) {
384 geBits = geBits | (1 << i);
385 }
386 }
387 Dest = resTemp;
388 resTemp = geBits;
389 ''', flagType="ge", buildNonCc=False)
390 buildRegDataInst("sadd16", '''
391 uint32_t geBits = 0;
392 resTemp = 0;
393 for (unsigned i = 0; i < 2; i++) {
394 int high = (i + 1) * 16 - 1;
395 int low = i * 16;
396 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) +
397 sext<16>(bits(Op2.sw, high, low));
398 replaceBits(resTemp, high, low, midRes);
399 if (midRes >= 0) {
400 geBits = geBits | (0x3 << (i * 2));
401 }
402 }
403 Dest = resTemp;
404 resTemp = geBits;
405 ''', flagType="ge", buildNonCc=False)
406
407 buildRegDataInst("ssub8", '''
408 uint32_t geBits = 0;
409 resTemp = 0;
410 for (unsigned i = 0; i < 4; i++) {
411 int high = (i + 1) * 8 - 1;
412 int low = i * 8;
413 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) -
414 sext<8>(bits(Op2.sw, high, low));
415 replaceBits(resTemp, high, low, midRes);
416 if (midRes >= 0) {
417 geBits = geBits | (1 << i);
418 }
419 }
420 Dest = resTemp;
421 resTemp = geBits;
422 ''', flagType="ge", buildNonCc=False)
423 buildRegDataInst("ssub16", '''
424 uint32_t geBits = 0;
425 resTemp = 0;
426 for (unsigned i = 0; i < 2; i++) {
427 int high = (i + 1) * 16 - 1;
428 int low = i * 16;
429 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) -
430 sext<16>(bits(Op2.sw, high, low));
431 replaceBits(resTemp, high, low, midRes);
432 if (midRes >= 0) {
433 geBits = geBits | (0x3 << (i * 2));
434 }
435 }
436 Dest = resTemp;
437 resTemp = geBits;
438 ''', flagType="ge", buildNonCc=False)
439 buildRegDataInst("sasx", '''
440 int32_t midRes, geBits = 0;
441 resTemp = 0;
442 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
443 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
444 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
445 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
446 midRes = arg1Low - arg2High;
447 if (midRes >= 0) {
448 geBits = geBits | 0x3;
449 }
450 replaceBits(resTemp, 15, 0, midRes);
451 midRes = arg1High + arg2Low;
452 if (midRes >= 0) {
453 geBits = geBits | 0xc;
454 }
455 replaceBits(resTemp, 31, 16, midRes);
456 Dest = resTemp;
457 resTemp = geBits;
458 ''', flagType="ge", buildNonCc=True)
459 buildRegDataInst("ssax", '''
460 int32_t midRes, geBits = 0;
461 resTemp = 0;
462 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
463 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
464 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
465 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
466 midRes = arg1Low + arg2High;
467 if (midRes >= 0) {
468 geBits = geBits | 0x3;
469 }
470 replaceBits(resTemp, 15, 0, midRes);
471 midRes = arg1High - arg2Low;
472 if (midRes >= 0) {
473 geBits = geBits | 0xc;
474 }
475 replaceBits(resTemp, 31, 16, midRes);
476 Dest = resTemp;
477 resTemp = geBits;
478 ''', flagType="ge", buildNonCc=True)
479
480 buildRegDataInst("shadd8", '''
481 resTemp = 0;
482 for (unsigned i = 0; i < 4; i++) {
483 int high = (i + 1) * 8 - 1;
484 int low = i * 8;
485 int32_t midRes =
486 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) +
487 sext<8>(bits(Op2.sw, high, low))) >> 1;
488 replaceBits(resTemp, high, low, midRes);
489 }
490 Dest = resTemp;
491 ''', flagType="none", buildCc=False)
492 buildRegDataInst("shadd16", '''
493 resTemp = 0;
494 for (unsigned i = 0; i < 2; i++) {
495 int high = (i + 1) * 16 - 1;
496 int low = i * 16;
497 int32_t midRes =
498 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) +
499 sext<16>(bits(Op2.sw, high, low))) >> 1;
500 replaceBits(resTemp, high, low, midRes);
501 }
502 Dest = resTemp;
503 ''', flagType="none", buildCc=False)
504 buildRegDataInst("shsub8", '''
505 resTemp = 0;
506 for (unsigned i = 0; i < 4; i++) {
507 int high = (i + 1) * 8 - 1;
508 int low = i * 8;
509 int32_t midRes =
510 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) -
511 sext<8>(bits(Op2.sw, high, low))) >> 1;
512 replaceBits(resTemp, high, low, midRes);
513 }
514 Dest = resTemp;
515 ''', flagType="none", buildCc=False)
516 buildRegDataInst("shsub16", '''
517 resTemp = 0;
518 for (unsigned i = 0; i < 2; i++) {
519 int high = (i + 1) * 16 - 1;
520 int low = i * 16;
521 int32_t midRes =
522 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) -
523 sext<16>(bits(Op2.sw, high, low))) >> 1;
524 replaceBits(resTemp, high, low, midRes);
525 }
526 Dest = resTemp;
527 ''', flagType="none", buildCc=False)
528 buildRegDataInst("shasx", '''
529 int32_t midRes;
530 resTemp = 0;
531 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
532 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
533 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
534 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
535 midRes = (uint64_t)(arg1Low - arg2High) >> 1;
536 replaceBits(resTemp, 15, 0, midRes);
537 midRes = (arg1High + arg2Low) >> 1;
538 replaceBits(resTemp, 31, 16, midRes);
539 Dest = resTemp;
540 ''', flagType="none", buildCc=True)
541 buildRegDataInst("shsax", '''
542 int32_t midRes;
543 resTemp = 0;
544 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
545 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
546 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
547 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
548 midRes = (uint64_t)(arg1Low + arg2High) >> 1;
549 replaceBits(resTemp, 15, 0, midRes);
550 midRes = (uint64_t)(arg1High - arg2Low) >> 1;
551 replaceBits(resTemp, 31, 16, midRes);
552 Dest = resTemp;
553 ''', flagType="none", buildCc=True)
554
555 buildRegDataInst("uqadd16", '''
556 uint32_t midRes;
557 for (unsigned i = 0; i < 2; i++) {
558 int high = (i + 1) * 16 - 1;
559 int low = i * 16;
560 uint64_t arg1 = bits(Op1, high, low);
561 uint64_t arg2 = bits(Op2, high, low);
562 uSaturateOp<16>(midRes, arg1, arg2);
563 replaceBits(resTemp, high, low, midRes);
564 }
565 Dest = resTemp;
566 ''', flagType="none", buildCc=False)
567 buildRegDataInst("uqadd8", '''
568 uint32_t midRes;
569 for (unsigned i = 0; i < 4; i++) {
570 int high = (i + 1) * 8 - 1;
571 int low = i * 8;
572 uint64_t arg1 = bits(Op1, high, low);
573 uint64_t arg2 = bits(Op2, high, low);
574 uSaturateOp<8>(midRes, arg1, arg2);
575 replaceBits(resTemp, high, low, midRes);
576 }
577 Dest = resTemp;
578 ''', flagType="none", buildCc=False)
579 buildRegDataInst("uqsub16", '''
580 uint32_t midRes;
581 for (unsigned i = 0; i < 2; i++) {
582 int high = (i + 1) * 16 - 1;
583 int low = i * 16;
584 uint64_t arg1 = bits(Op1, high, low);
585 uint64_t arg2 = bits(Op2, high, low);
586 uSaturateOp<16>(midRes, arg1, arg2, true);
587 replaceBits(resTemp, high, low, midRes);
588 }
589 Dest = resTemp;
590 ''', flagType="none", buildCc=False)
591 buildRegDataInst("uqsub8", '''
592 uint32_t midRes;
593 for (unsigned i = 0; i < 4; i++) {
594 int high = (i + 1) * 8 - 1;
595 int low = i * 8;
596 uint64_t arg1 = bits(Op1, high, low);
597 uint64_t arg2 = bits(Op2, high, low);
598 uSaturateOp<8>(midRes, arg1, arg2, true);
599 replaceBits(resTemp, high, low, midRes);
600 }
601 Dest = resTemp;
602 ''', flagType="none", buildCc=False)
603 buildRegDataInst("uqasx", '''
604 uint32_t midRes;
605 uint64_t arg1Low = bits(Op1.sw, 15, 0);
606 uint64_t arg1High = bits(Op1.sw, 31, 16);
607 uint64_t arg2Low = bits(Op2.sw, 15, 0);
608 uint64_t arg2High = bits(Op2.sw, 31, 16);
609 uSaturateOp<16>(midRes, arg1Low, arg2High, true);
610 replaceBits(resTemp, 15, 0, midRes);
611 uSaturateOp<16>(midRes, arg1High, arg2Low);
612 replaceBits(resTemp, 31, 16, midRes);
613 Dest = resTemp;
614 ''', flagType="none", buildCc=False)
615 buildRegDataInst("uqsax", '''
616 uint32_t midRes;
617 uint64_t arg1Low = bits(Op1.sw, 15, 0);
618 uint64_t arg1High = bits(Op1.sw, 31, 16);
619 uint64_t arg2Low = bits(Op2.sw, 15, 0);
620 uint64_t arg2High = bits(Op2.sw, 31, 16);
621 uSaturateOp<16>(midRes, arg1Low, arg2High);
622 replaceBits(resTemp, 15, 0, midRes);
623 uSaturateOp<16>(midRes, arg1High, arg2Low, true);
624 replaceBits(resTemp, 31, 16, midRes);
625 Dest = resTemp;
626 ''', flagType="none", buildCc=False)
627
628 buildRegDataInst("uadd16", '''
629 uint32_t geBits = 0;
630 resTemp = 0;
631 for (unsigned i = 0; i < 2; i++) {
632 int high = (i + 1) * 16 - 1;
633 int low = i * 16;
634 int32_t midRes = bits(Op1, high, low) +
635 bits(Op2, high, low);
636 if (midRes >= 0x10000) {
637 geBits = geBits | (0x3 << (i * 2));
638 }
639 replaceBits(resTemp, high, low, midRes);
640 }
641 Dest = resTemp;
642 resTemp = geBits;
643 ''', flagType="ge", buildNonCc=False)
644 buildRegDataInst("uadd8", '''
645 uint32_t geBits = 0;
646 resTemp = 0;
647 for (unsigned i = 0; i < 4; i++) {
648 int high = (i + 1) * 8 - 1;
649 int low = i * 8;
650 int32_t midRes = bits(Op1, high, low) +
651 bits(Op2, high, low);
652 if (midRes >= 0x100) {
653 geBits = geBits | (1 << i);
654 }
655 replaceBits(resTemp, high, low, midRes);
656 }
657 Dest = resTemp;
658 resTemp = geBits;
659 ''', flagType="ge", buildNonCc=False)
660 buildRegDataInst("usub16", '''
661 uint32_t geBits = 0;
662 resTemp = 0;
663 for (unsigned i = 0; i < 2; i++) {
664 int high = (i + 1) * 16 - 1;
665 int low = i * 16;
666 int32_t midRes = bits(Op1, high, low) -
667 bits(Op2, high, low);
668 if (midRes >= 0) {
669 geBits = geBits | (0x3 << (i * 2));
670 }
671 replaceBits(resTemp, high, low, midRes);
672 }
673 Dest = resTemp;
674 resTemp = geBits;
675 ''', flagType="ge", buildNonCc=False)
676 buildRegDataInst("usub8", '''
677 uint32_t geBits = 0;
678 resTemp = 0;
679 for (unsigned i = 0; i < 4; i++) {
680 int high = (i + 1) * 8 - 1;
681 int low = i * 8;
682 int32_t midRes = bits(Op1, high, low) -
683 bits(Op2, high, low);
684 if (midRes >= 0) {
685 geBits = geBits | (1 << i);
686 }
687 replaceBits(resTemp, high, low, midRes);
688 }
689 Dest = resTemp;
690 resTemp = geBits;
691 ''', flagType="ge", buildNonCc=False)
692 buildRegDataInst("uasx", '''
693 int32_t midRes, geBits = 0;
694 resTemp = 0;
695 int64_t arg1Low = bits(Op1.sw, 15, 0);
696 int64_t arg1High = bits(Op1.sw, 31, 16);
697 int64_t arg2Low = bits(Op2.sw, 15, 0);
698 int64_t arg2High = bits(Op2.sw, 31, 16);
699 midRes = arg1Low - arg2High;
700 if (midRes >= 0) {
701 geBits = geBits | 0x3;
702 }
703 replaceBits(resTemp, 15, 0, midRes);
704 midRes = arg1High + arg2Low;
705 if (midRes >= 0x10000) {
706 geBits = geBits | 0xc;
707 }
708 replaceBits(resTemp, 31, 16, midRes);
709 Dest = resTemp;
710 resTemp = geBits;
711 ''', flagType="ge", buildNonCc=False)
712 buildRegDataInst("usax", '''
713 int32_t midRes, geBits = 0;
714 resTemp = 0;
715 int64_t arg1Low = bits(Op1.sw, 15, 0);
716 int64_t arg1High = bits(Op1.sw, 31, 16);
717 int64_t arg2Low = bits(Op2.sw, 15, 0);
718 int64_t arg2High = bits(Op2.sw, 31, 16);
719 midRes = arg1Low + arg2High;
720 if (midRes >= 0x10000) {
721 geBits = geBits | 0x3;
722 }
723 replaceBits(resTemp, 15, 0, midRes);
724 midRes = arg1High - arg2Low;
725 if (midRes >= 0) {
726 geBits = geBits | 0xc;
727 }
728 replaceBits(resTemp, 31, 16, midRes);
729 Dest = resTemp;
730 resTemp = geBits;
731 ''', flagType="ge", buildNonCc=False)
732
733 buildRegDataInst("uhadd16", '''
734 resTemp = 0;
735 for (unsigned i = 0; i < 2; i++) {
736 int high = (i + 1) * 16 - 1;
737 int low = i * 16;
738 int32_t midRes = (bits(Op1, high, low) +
739 bits(Op2, high, low)) >> 1;
740 replaceBits(resTemp, high, low, midRes);
741 }
742 Dest = resTemp;
743 ''', flagType="none", buildCc=False)
744 buildRegDataInst("uhadd8", '''
745 resTemp = 0;
746 for (unsigned i = 0; i < 4; i++) {
747 int high = (i + 1) * 8 - 1;
748 int low = i * 8;
749 int32_t midRes = (bits(Op1, high, low) +
750 bits(Op2, high, low)) >> 1;
751 replaceBits(resTemp, high, low, midRes);
752 }
753 Dest = resTemp;
754 ''', flagType="none", buildCc=False)
755 buildRegDataInst("uhsub16", '''
756 resTemp = 0;
757 for (unsigned i = 0; i < 2; i++) {
758 int high = (i + 1) * 16 - 1;
759 int low = i * 16;
760 int32_t midRes = (bits(Op1, high, low) -
761 bits(Op2, high, low)) >> 1;
762 replaceBits(resTemp, high, low, midRes);
763 }
764 Dest = resTemp;
765 ''', flagType="none", buildCc=False)
766 buildRegDataInst("uhsub8", '''
767 resTemp = 0;
768 for (unsigned i = 0; i < 4; i++) {
769 int high = (i + 1) * 8 - 1;
770 int low = i * 8;
771 int32_t midRes = (bits(Op1, high, low) -
772 bits(Op2, high, low)) >> 1;
773 replaceBits(resTemp, high, low, midRes);
774 }
775 Dest = resTemp;
776 ''', flagType="none", buildCc=False)
777 buildRegDataInst("uhasx", '''
778 int32_t midRes;
779 resTemp = 0;
780 int64_t arg1Low = bits(Op1.sw, 15, 0);
781 int64_t arg1High = bits(Op1.sw, 31, 16);
782 int64_t arg2Low = bits(Op2.sw, 15, 0);
783 int64_t arg2High = bits(Op2.sw, 31, 16);
784 midRes = (arg1Low - arg2High) >> 1;
785 replaceBits(resTemp, 15, 0, midRes);
786 midRes = (arg1High + arg2Low) >> 1;
787 replaceBits(resTemp, 31, 16, midRes);
788 Dest = resTemp;
789 ''', flagType="none", buildCc=False)
790 buildRegDataInst("uhsax", '''
791 int32_t midRes;
792 resTemp = 0;
793 int64_t arg1Low = bits(Op1.sw, 15, 0);
794 int64_t arg1High = bits(Op1.sw, 31, 16);
795 int64_t arg2Low = bits(Op2.sw, 15, 0);
796 int64_t arg2High = bits(Op2.sw, 31, 16);
797 midRes = (arg1Low + arg2High) >> 1;
798 replaceBits(resTemp, 15, 0, midRes);
799 midRes = (arg1High - arg2Low) >> 1;
800 replaceBits(resTemp, 31, 16, midRes);
801 Dest = resTemp;
802 ''', flagType="none", buildCc=False)
803
804 buildRegDataInst("pkhbt", '''
805 uint32_t resTemp = 0;
806 uint16_t arg1Low = bits(Op1, 15, 0);
807 uint16_t arg2High = bits(secondOp, 31, 16);
808 replaceBits(resTemp, 15, 0, arg1Low);
809 replaceBits(resTemp, 31, 16, arg2High);
810 Dest = resTemp;
811 ''', flagType="none", buildCc=False)
812 buildRegDataInst("pkhtb", '''
813 uint32_t resTemp = 0;
814 uint16_t arg1High = bits(Op1, 31, 16);
815 uint16_t arg2Low = bits(secondOp, 15, 0);
816 replaceBits(resTemp, 15, 0, arg2Low);
817 replaceBits(resTemp, 31, 16, arg1High);
818 Dest = resTemp;
819 ''', flagType="none", buildCc=False)
820}};
2
3// Copyright (c) 2010 ARM Limited
4// All rights reserved
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder. You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Redistribution and use in source and binary forms, with or without
16// modification, are permitted provided that the following conditions are
17// met: redistributions of source code must retain the above copyright
18// notice, this list of conditions and the following disclaimer;
19// redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution;
22// neither the name of the copyright holders nor the names of its
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37//
38// Authors: Gabe Black
39
40let {{
41
42 header_output = ""
43 decoder_output = ""
44 exec_output = ""
45
46 calcGECode = '''
47 CondCodes = insertBits(CondCodes, 19, 16, resTemp);
48 '''
49
50 calcQCode = '''
51 CondCodes = CondCodes | ((resTemp & 1) << 27);
52 '''
53
54 calcCcCode = '''
55 uint16_t _ic, _iv, _iz, _in;
56 _in = (resTemp >> %(negBit)d) & 1;
57 _iz = (resTemp == 0);
58 _iv = %(ivValue)s & 1;
59 _ic = %(icValue)s & 1;
60
61 CondCodes = _in << 31 | _iz << 30 | _ic << 29 | _iv << 28 |
62 (CondCodes & 0x0FFFFFFF);
63
64 DPRINTF(Arm, "(in, iz, ic, iv) = (%%d, %%d, %%d, %%d)\\n",
65 _in, _iz, _ic, _iv);
66 '''
67
68 # Dict of code to set the carry flag. (imm, reg, reg-reg)
69 oldC = 'CondCodes<29:>'
70 oldV = 'CondCodes<28:>'
71 carryCode = {
72 "none": (oldC, oldC, oldC),
73 "llbit": (oldC, oldC, oldC),
74 "saturate": ('0', '0', '0'),
75 "overflow": ('0', '0', '0'),
76 "ge": ('0', '0', '0'),
77 "add": ('findCarry(32, resTemp, Op1, secondOp)',
78 'findCarry(32, resTemp, Op1, secondOp)',
79 'findCarry(32, resTemp, Op1, secondOp)'),
80 "sub": ('findCarry(32, resTemp, Op1, ~secondOp)',
81 'findCarry(32, resTemp, Op1, ~secondOp)',
82 'findCarry(32, resTemp, Op1, ~secondOp)'),
83 "rsb": ('findCarry(32, resTemp, secondOp, ~Op1)',
84 'findCarry(32, resTemp, secondOp, ~Op1)',
85 'findCarry(32, resTemp, secondOp, ~Op1)'),
86 "logic": ('(rotC ? bits(secondOp, 31) : %s)' % oldC,
87 'shift_carry_imm(Op2, shiftAmt, shiftType, %s)' % oldC,
88 'shift_carry_rs(Op2, Shift<7:0>, shiftType, %s)' % oldC)
89 }
90 # Dict of code to set the overflow flag.
91 overflowCode = {
92 "none": oldV,
93 "llbit": oldV,
94 "saturate": '0',
95 "overflow": '0',
96 "ge": '0',
97 "add": 'findOverflow(32, resTemp, Op1, secondOp)',
98 "sub": 'findOverflow(32, resTemp, Op1, ~secondOp)',
99 "rsb": 'findOverflow(32, resTemp, secondOp, ~Op1)',
100 "logic": oldV
101 }
102
103 secondOpRe = re.compile("secondOp")
104 immOp2 = "imm"
105 regOp2 = "shift_rm_imm(Op2, shiftAmt, shiftType, CondCodes<29:>)"
106 regRegOp2 = "shift_rm_rs(Op2, Shift<7:0>, shiftType, CondCodes<29:>)"
107
108 def buildImmDataInst(mnem, code, flagType = "logic", suffix = "Imm", \
109 buildCc = True, buildNonCc = True, instFlags = []):
110 cCode = carryCode[flagType]
111 vCode = overflowCode[flagType]
112 negBit = 31
113 if flagType == "llbit":
114 negBit = 63
115 if flagType == "saturate":
116 immCcCode = calcQCode
117 elif flagType == "ge":
118 immCcCode = calcGECode
119 else:
120 immCcCode = calcCcCode % {
121 "icValue": secondOpRe.sub(immOp2, cCode[0]),
122 "ivValue": secondOpRe.sub(immOp2, vCode),
123 "negBit": negBit
124 }
125 immCode = secondOpRe.sub(immOp2, code)
126 immIop = InstObjParams(mnem, mnem.capitalize() + suffix, "DataImmOp",
127 {"code" : immCode,
128 "predicate_test": predicateTest}, instFlags)
129 immIopCc = InstObjParams(mnem + "s", mnem.capitalize() + suffix + "Cc",
130 "DataImmOp",
131 {"code" : immCode + immCcCode,
132 "predicate_test": condPredicateTest}, instFlags)
133
134 def subst(iop):
135 global header_output, decoder_output, exec_output
136 header_output += DataImmDeclare.subst(iop)
137 decoder_output += DataImmConstructor.subst(iop)
138 exec_output += PredOpExecute.subst(iop)
139
140 if buildNonCc:
141 subst(immIop)
142 if buildCc:
143 subst(immIopCc)
144
145 def buildRegDataInst(mnem, code, flagType = "logic", suffix = "Reg", \
146 buildCc = True, buildNonCc = True, instFlags = []):
147 cCode = carryCode[flagType]
148 vCode = overflowCode[flagType]
149 negBit = 31
150 if flagType == "llbit":
151 negBit = 63
152 if flagType == "saturate":
153 regCcCode = calcQCode
154 elif flagType == "ge":
155 regCcCode = calcGECode
156 else:
157 regCcCode = calcCcCode % {
158 "icValue": secondOpRe.sub(regOp2, cCode[1]),
159 "ivValue": secondOpRe.sub(regOp2, vCode),
160 "negBit": negBit
161 }
162 regCode = secondOpRe.sub(regOp2, code)
163 regIop = InstObjParams(mnem, mnem.capitalize() + suffix, "DataRegOp",
164 {"code" : regCode,
165 "predicate_test": predicateTest}, instFlags)
166 regIopCc = InstObjParams(mnem + "s", mnem.capitalize() + suffix + "Cc",
167 "DataRegOp",
168 {"code" : regCode + regCcCode,
169 "predicate_test": condPredicateTest},
170 instFlags)
171
172 def subst(iop):
173 global header_output, decoder_output, exec_output
174 header_output += DataRegDeclare.subst(iop)
175 decoder_output += DataRegConstructor.subst(iop)
176 exec_output += PredOpExecute.subst(iop)
177
178 if buildNonCc:
179 subst(regIop)
180 if buildCc:
181 subst(regIopCc)
182
183 def buildRegRegDataInst(mnem, code, flagType = "logic", \
184 suffix = "RegReg", \
185 buildCc = True, buildNonCc = True):
186 cCode = carryCode[flagType]
187 vCode = overflowCode[flagType]
188 negBit = 31
189 if flagType == "llbit":
190 negBit = 63
191 if flagType == "saturate":
192 regRegCcCode = calcQCode
193 elif flagType == "ge":
194 regRegCcCode = calcGECode
195 else:
196 regRegCcCode = calcCcCode % {
197 "icValue": secondOpRe.sub(regRegOp2, cCode[2]),
198 "ivValue": secondOpRe.sub(regRegOp2, vCode),
199 "negBit": negBit
200 }
201 regRegCode = secondOpRe.sub(regRegOp2, code)
202 regRegIop = InstObjParams(mnem, mnem.capitalize() + suffix,
203 "DataRegRegOp",
204 {"code" : regRegCode,
205 "predicate_test": predicateTest})
206 regRegIopCc = InstObjParams(mnem + "s",
207 mnem.capitalize() + suffix + "Cc",
208 "DataRegRegOp",
209 {"code" : regRegCode + regRegCcCode,
210 "predicate_test": condPredicateTest})
211
212 def subst(iop):
213 global header_output, decoder_output, exec_output
214 header_output += DataRegRegDeclare.subst(iop)
215 decoder_output += DataRegRegConstructor.subst(iop)
216 exec_output += PredOpExecute.subst(iop)
217
218 if buildNonCc:
219 subst(regRegIop)
220 if buildCc:
221 subst(regRegIopCc)
222
223 def buildDataInst(mnem, code, flagType = "logic", \
224 aiw = True, regRegAiw = True,
225 subsPcLr = True):
226 regRegCode = instCode = code
227 if aiw:
228 instCode = "AIW" + instCode
229 if regRegAiw:
230 regRegCode = "AIW" + regRegCode
231
232 buildImmDataInst(mnem, instCode, flagType)
233 buildRegDataInst(mnem, instCode, flagType)
234 buildRegRegDataInst(mnem, regRegCode, flagType)
235 if subsPcLr:
236 code += '''
237 SCTLR sctlr = Sctlr;
238 uint32_t newCpsr =
239 cpsrWriteByInstr(Cpsr | CondCodes, Spsr, 0xF, true, sctlr.nmfi);
240 Cpsr = ~CondCodesMask & newCpsr;
241 CondCodes = CondCodesMask & newCpsr;
242 NextThumb = ((CPSR)newCpsr).t;
243 NextJazelle = ((CPSR)newCpsr).j;
244 ForcedItState = ((((CPSR)newCpsr).it2 << 2) & 0xFC)
245 | (((CPSR)newCpsr).it1 & 0x3);
246 '''
247 buildImmDataInst(mnem + 's', code, flagType,
248 suffix = "ImmPclr", buildCc = False,
249 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
250 buildRegDataInst(mnem + 's', code, flagType,
251 suffix = "RegPclr", buildCc = False,
252 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
253
254 buildDataInst("and", "Dest = resTemp = Op1 & secondOp;")
255 buildDataInst("eor", "Dest = resTemp = Op1 ^ secondOp;")
256 buildDataInst("sub", "Dest = resTemp = Op1 - secondOp;", "sub")
257 buildDataInst("rsb", "Dest = resTemp = secondOp - Op1;", "rsb")
258 buildDataInst("add", "Dest = resTemp = Op1 + secondOp;", "add")
259 buildImmDataInst("adr", '''
260 Dest = resTemp = (PC & ~0x3) +
261 (op1 ? secondOp : -secondOp);
262 ''')
263 buildDataInst("adc", "Dest = resTemp = Op1 + secondOp + %s;" % oldC, "add")
264 buildDataInst("sbc", "Dest = resTemp = Op1 - secondOp - !%s;" % oldC, "sub")
265 buildDataInst("rsc", "Dest = resTemp = secondOp - Op1 - !%s;" % oldC, "rsb")
266 buildDataInst("tst", "resTemp = Op1 & secondOp;", aiw = False)
267 buildDataInst("teq", "resTemp = Op1 ^ secondOp;", aiw = False)
268 buildDataInst("cmp", "resTemp = Op1 - secondOp;", "sub", aiw = False)
269 buildDataInst("cmn", "resTemp = Op1 + secondOp;", "add", aiw = False)
270 buildDataInst("orr", "Dest = resTemp = Op1 | secondOp;")
271 buildDataInst("orn", "Dest = resTemp = Op1 | ~secondOp;", aiw = False)
272 buildDataInst("mov", "Dest = resTemp = secondOp;", regRegAiw = False)
273 buildDataInst("bic", "Dest = resTemp = Op1 & ~secondOp;")
274 buildDataInst("mvn", "Dest = resTemp = ~secondOp;")
275 buildDataInst("movt",
276 "Dest = resTemp = insertBits(Op1, 31, 16, secondOp);",
277 aiw = False)
278
279 buildRegDataInst("qadd", '''
280 int32_t midRes;
281 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw);
282 Dest = midRes;
283 ''', flagType="saturate", buildNonCc=False)
284 buildRegDataInst("qadd16", '''
285 int32_t midRes;
286 for (unsigned i = 0; i < 2; i++) {
287 int high = (i + 1) * 16 - 1;
288 int low = i * 16;
289 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
290 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
291 saturateOp<16>(midRes, arg1, arg2);
292 replaceBits(resTemp, high, low, midRes);
293 }
294 Dest = resTemp;
295 ''', flagType="none", buildCc=False)
296 buildRegDataInst("qadd8", '''
297 int32_t midRes;
298 for (unsigned i = 0; i < 4; i++) {
299 int high = (i + 1) * 8 - 1;
300 int low = i * 8;
301 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
302 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
303 saturateOp<8>(midRes, arg1, arg2);
304 replaceBits(resTemp, high, low, midRes);
305 }
306 Dest = resTemp;
307 ''', flagType="none", buildCc=False)
308 buildRegDataInst("qdadd", '''
309 int32_t midRes;
310 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
311 saturateOp<32>(midRes, Op1.sw, midRes);
312 Dest = midRes;
313 ''', flagType="saturate", buildNonCc=False)
314 buildRegDataInst("qsub", '''
315 int32_t midRes;
316 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw, true);
317 Dest = midRes;
318 ''', flagType="saturate")
319 buildRegDataInst("qsub16", '''
320 int32_t midRes;
321 for (unsigned i = 0; i < 2; i++) {
322 int high = (i + 1) * 16 - 1;
323 int low = i * 16;
324 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
325 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
326 saturateOp<16>(midRes, arg1, arg2, true);
327 replaceBits(resTemp, high, low, midRes);
328 }
329 Dest = resTemp;
330 ''', flagType="none", buildCc=False)
331 buildRegDataInst("qsub8", '''
332 int32_t midRes;
333 for (unsigned i = 0; i < 4; i++) {
334 int high = (i + 1) * 8 - 1;
335 int low = i * 8;
336 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
337 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
338 saturateOp<8>(midRes, arg1, arg2, true);
339 replaceBits(resTemp, high, low, midRes);
340 }
341 Dest = resTemp;
342 ''', flagType="none", buildCc=False)
343 buildRegDataInst("qdsub", '''
344 int32_t midRes;
345 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
346 saturateOp<32>(midRes, Op1.sw, midRes, true);
347 Dest = midRes;
348 ''', flagType="saturate", buildNonCc=False)
349 buildRegDataInst("qasx", '''
350 int32_t midRes;
351 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
352 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
353 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
354 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
355 saturateOp<16>(midRes, arg1Low, arg2High, true);
356 replaceBits(resTemp, 15, 0, midRes);
357 saturateOp<16>(midRes, arg1High, arg2Low);
358 replaceBits(resTemp, 31, 16, midRes);
359 Dest = resTemp;
360 ''', flagType="none", buildCc=False)
361 buildRegDataInst("qsax", '''
362 int32_t midRes;
363 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
364 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
365 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
366 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
367 saturateOp<16>(midRes, arg1Low, arg2High);
368 replaceBits(resTemp, 15, 0, midRes);
369 saturateOp<16>(midRes, arg1High, arg2Low, true);
370 replaceBits(resTemp, 31, 16, midRes);
371 Dest = resTemp;
372 ''', flagType="none", buildCc=False)
373
374 buildRegDataInst("sadd8", '''
375 uint32_t geBits = 0;
376 resTemp = 0;
377 for (unsigned i = 0; i < 4; i++) {
378 int high = (i + 1) * 8 - 1;
379 int low = i * 8;
380 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) +
381 sext<8>(bits(Op2.sw, high, low));
382 replaceBits(resTemp, high, low, midRes);
383 if (midRes >= 0) {
384 geBits = geBits | (1 << i);
385 }
386 }
387 Dest = resTemp;
388 resTemp = geBits;
389 ''', flagType="ge", buildNonCc=False)
390 buildRegDataInst("sadd16", '''
391 uint32_t geBits = 0;
392 resTemp = 0;
393 for (unsigned i = 0; i < 2; i++) {
394 int high = (i + 1) * 16 - 1;
395 int low = i * 16;
396 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) +
397 sext<16>(bits(Op2.sw, high, low));
398 replaceBits(resTemp, high, low, midRes);
399 if (midRes >= 0) {
400 geBits = geBits | (0x3 << (i * 2));
401 }
402 }
403 Dest = resTemp;
404 resTemp = geBits;
405 ''', flagType="ge", buildNonCc=False)
406
407 buildRegDataInst("ssub8", '''
408 uint32_t geBits = 0;
409 resTemp = 0;
410 for (unsigned i = 0; i < 4; i++) {
411 int high = (i + 1) * 8 - 1;
412 int low = i * 8;
413 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) -
414 sext<8>(bits(Op2.sw, high, low));
415 replaceBits(resTemp, high, low, midRes);
416 if (midRes >= 0) {
417 geBits = geBits | (1 << i);
418 }
419 }
420 Dest = resTemp;
421 resTemp = geBits;
422 ''', flagType="ge", buildNonCc=False)
423 buildRegDataInst("ssub16", '''
424 uint32_t geBits = 0;
425 resTemp = 0;
426 for (unsigned i = 0; i < 2; i++) {
427 int high = (i + 1) * 16 - 1;
428 int low = i * 16;
429 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) -
430 sext<16>(bits(Op2.sw, high, low));
431 replaceBits(resTemp, high, low, midRes);
432 if (midRes >= 0) {
433 geBits = geBits | (0x3 << (i * 2));
434 }
435 }
436 Dest = resTemp;
437 resTemp = geBits;
438 ''', flagType="ge", buildNonCc=False)
439 buildRegDataInst("sasx", '''
440 int32_t midRes, geBits = 0;
441 resTemp = 0;
442 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
443 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
444 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
445 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
446 midRes = arg1Low - arg2High;
447 if (midRes >= 0) {
448 geBits = geBits | 0x3;
449 }
450 replaceBits(resTemp, 15, 0, midRes);
451 midRes = arg1High + arg2Low;
452 if (midRes >= 0) {
453 geBits = geBits | 0xc;
454 }
455 replaceBits(resTemp, 31, 16, midRes);
456 Dest = resTemp;
457 resTemp = geBits;
458 ''', flagType="ge", buildNonCc=True)
459 buildRegDataInst("ssax", '''
460 int32_t midRes, geBits = 0;
461 resTemp = 0;
462 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
463 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
464 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
465 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
466 midRes = arg1Low + arg2High;
467 if (midRes >= 0) {
468 geBits = geBits | 0x3;
469 }
470 replaceBits(resTemp, 15, 0, midRes);
471 midRes = arg1High - arg2Low;
472 if (midRes >= 0) {
473 geBits = geBits | 0xc;
474 }
475 replaceBits(resTemp, 31, 16, midRes);
476 Dest = resTemp;
477 resTemp = geBits;
478 ''', flagType="ge", buildNonCc=True)
479
480 buildRegDataInst("shadd8", '''
481 resTemp = 0;
482 for (unsigned i = 0; i < 4; i++) {
483 int high = (i + 1) * 8 - 1;
484 int low = i * 8;
485 int32_t midRes =
486 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) +
487 sext<8>(bits(Op2.sw, high, low))) >> 1;
488 replaceBits(resTemp, high, low, midRes);
489 }
490 Dest = resTemp;
491 ''', flagType="none", buildCc=False)
492 buildRegDataInst("shadd16", '''
493 resTemp = 0;
494 for (unsigned i = 0; i < 2; i++) {
495 int high = (i + 1) * 16 - 1;
496 int low = i * 16;
497 int32_t midRes =
498 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) +
499 sext<16>(bits(Op2.sw, high, low))) >> 1;
500 replaceBits(resTemp, high, low, midRes);
501 }
502 Dest = resTemp;
503 ''', flagType="none", buildCc=False)
504 buildRegDataInst("shsub8", '''
505 resTemp = 0;
506 for (unsigned i = 0; i < 4; i++) {
507 int high = (i + 1) * 8 - 1;
508 int low = i * 8;
509 int32_t midRes =
510 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) -
511 sext<8>(bits(Op2.sw, high, low))) >> 1;
512 replaceBits(resTemp, high, low, midRes);
513 }
514 Dest = resTemp;
515 ''', flagType="none", buildCc=False)
516 buildRegDataInst("shsub16", '''
517 resTemp = 0;
518 for (unsigned i = 0; i < 2; i++) {
519 int high = (i + 1) * 16 - 1;
520 int low = i * 16;
521 int32_t midRes =
522 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) -
523 sext<16>(bits(Op2.sw, high, low))) >> 1;
524 replaceBits(resTemp, high, low, midRes);
525 }
526 Dest = resTemp;
527 ''', flagType="none", buildCc=False)
528 buildRegDataInst("shasx", '''
529 int32_t midRes;
530 resTemp = 0;
531 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
532 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
533 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
534 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
535 midRes = (uint64_t)(arg1Low - arg2High) >> 1;
536 replaceBits(resTemp, 15, 0, midRes);
537 midRes = (arg1High + arg2Low) >> 1;
538 replaceBits(resTemp, 31, 16, midRes);
539 Dest = resTemp;
540 ''', flagType="none", buildCc=True)
541 buildRegDataInst("shsax", '''
542 int32_t midRes;
543 resTemp = 0;
544 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
545 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
546 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
547 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
548 midRes = (uint64_t)(arg1Low + arg2High) >> 1;
549 replaceBits(resTemp, 15, 0, midRes);
550 midRes = (uint64_t)(arg1High - arg2Low) >> 1;
551 replaceBits(resTemp, 31, 16, midRes);
552 Dest = resTemp;
553 ''', flagType="none", buildCc=True)
554
555 buildRegDataInst("uqadd16", '''
556 uint32_t midRes;
557 for (unsigned i = 0; i < 2; i++) {
558 int high = (i + 1) * 16 - 1;
559 int low = i * 16;
560 uint64_t arg1 = bits(Op1, high, low);
561 uint64_t arg2 = bits(Op2, high, low);
562 uSaturateOp<16>(midRes, arg1, arg2);
563 replaceBits(resTemp, high, low, midRes);
564 }
565 Dest = resTemp;
566 ''', flagType="none", buildCc=False)
567 buildRegDataInst("uqadd8", '''
568 uint32_t midRes;
569 for (unsigned i = 0; i < 4; i++) {
570 int high = (i + 1) * 8 - 1;
571 int low = i * 8;
572 uint64_t arg1 = bits(Op1, high, low);
573 uint64_t arg2 = bits(Op2, high, low);
574 uSaturateOp<8>(midRes, arg1, arg2);
575 replaceBits(resTemp, high, low, midRes);
576 }
577 Dest = resTemp;
578 ''', flagType="none", buildCc=False)
579 buildRegDataInst("uqsub16", '''
580 uint32_t midRes;
581 for (unsigned i = 0; i < 2; i++) {
582 int high = (i + 1) * 16 - 1;
583 int low = i * 16;
584 uint64_t arg1 = bits(Op1, high, low);
585 uint64_t arg2 = bits(Op2, high, low);
586 uSaturateOp<16>(midRes, arg1, arg2, true);
587 replaceBits(resTemp, high, low, midRes);
588 }
589 Dest = resTemp;
590 ''', flagType="none", buildCc=False)
591 buildRegDataInst("uqsub8", '''
592 uint32_t midRes;
593 for (unsigned i = 0; i < 4; i++) {
594 int high = (i + 1) * 8 - 1;
595 int low = i * 8;
596 uint64_t arg1 = bits(Op1, high, low);
597 uint64_t arg2 = bits(Op2, high, low);
598 uSaturateOp<8>(midRes, arg1, arg2, true);
599 replaceBits(resTemp, high, low, midRes);
600 }
601 Dest = resTemp;
602 ''', flagType="none", buildCc=False)
603 buildRegDataInst("uqasx", '''
604 uint32_t midRes;
605 uint64_t arg1Low = bits(Op1.sw, 15, 0);
606 uint64_t arg1High = bits(Op1.sw, 31, 16);
607 uint64_t arg2Low = bits(Op2.sw, 15, 0);
608 uint64_t arg2High = bits(Op2.sw, 31, 16);
609 uSaturateOp<16>(midRes, arg1Low, arg2High, true);
610 replaceBits(resTemp, 15, 0, midRes);
611 uSaturateOp<16>(midRes, arg1High, arg2Low);
612 replaceBits(resTemp, 31, 16, midRes);
613 Dest = resTemp;
614 ''', flagType="none", buildCc=False)
615 buildRegDataInst("uqsax", '''
616 uint32_t midRes;
617 uint64_t arg1Low = bits(Op1.sw, 15, 0);
618 uint64_t arg1High = bits(Op1.sw, 31, 16);
619 uint64_t arg2Low = bits(Op2.sw, 15, 0);
620 uint64_t arg2High = bits(Op2.sw, 31, 16);
621 uSaturateOp<16>(midRes, arg1Low, arg2High);
622 replaceBits(resTemp, 15, 0, midRes);
623 uSaturateOp<16>(midRes, arg1High, arg2Low, true);
624 replaceBits(resTemp, 31, 16, midRes);
625 Dest = resTemp;
626 ''', flagType="none", buildCc=False)
627
628 buildRegDataInst("uadd16", '''
629 uint32_t geBits = 0;
630 resTemp = 0;
631 for (unsigned i = 0; i < 2; i++) {
632 int high = (i + 1) * 16 - 1;
633 int low = i * 16;
634 int32_t midRes = bits(Op1, high, low) +
635 bits(Op2, high, low);
636 if (midRes >= 0x10000) {
637 geBits = geBits | (0x3 << (i * 2));
638 }
639 replaceBits(resTemp, high, low, midRes);
640 }
641 Dest = resTemp;
642 resTemp = geBits;
643 ''', flagType="ge", buildNonCc=False)
644 buildRegDataInst("uadd8", '''
645 uint32_t geBits = 0;
646 resTemp = 0;
647 for (unsigned i = 0; i < 4; i++) {
648 int high = (i + 1) * 8 - 1;
649 int low = i * 8;
650 int32_t midRes = bits(Op1, high, low) +
651 bits(Op2, high, low);
652 if (midRes >= 0x100) {
653 geBits = geBits | (1 << i);
654 }
655 replaceBits(resTemp, high, low, midRes);
656 }
657 Dest = resTemp;
658 resTemp = geBits;
659 ''', flagType="ge", buildNonCc=False)
660 buildRegDataInst("usub16", '''
661 uint32_t geBits = 0;
662 resTemp = 0;
663 for (unsigned i = 0; i < 2; i++) {
664 int high = (i + 1) * 16 - 1;
665 int low = i * 16;
666 int32_t midRes = bits(Op1, high, low) -
667 bits(Op2, high, low);
668 if (midRes >= 0) {
669 geBits = geBits | (0x3 << (i * 2));
670 }
671 replaceBits(resTemp, high, low, midRes);
672 }
673 Dest = resTemp;
674 resTemp = geBits;
675 ''', flagType="ge", buildNonCc=False)
676 buildRegDataInst("usub8", '''
677 uint32_t geBits = 0;
678 resTemp = 0;
679 for (unsigned i = 0; i < 4; i++) {
680 int high = (i + 1) * 8 - 1;
681 int low = i * 8;
682 int32_t midRes = bits(Op1, high, low) -
683 bits(Op2, high, low);
684 if (midRes >= 0) {
685 geBits = geBits | (1 << i);
686 }
687 replaceBits(resTemp, high, low, midRes);
688 }
689 Dest = resTemp;
690 resTemp = geBits;
691 ''', flagType="ge", buildNonCc=False)
692 buildRegDataInst("uasx", '''
693 int32_t midRes, geBits = 0;
694 resTemp = 0;
695 int64_t arg1Low = bits(Op1.sw, 15, 0);
696 int64_t arg1High = bits(Op1.sw, 31, 16);
697 int64_t arg2Low = bits(Op2.sw, 15, 0);
698 int64_t arg2High = bits(Op2.sw, 31, 16);
699 midRes = arg1Low - arg2High;
700 if (midRes >= 0) {
701 geBits = geBits | 0x3;
702 }
703 replaceBits(resTemp, 15, 0, midRes);
704 midRes = arg1High + arg2Low;
705 if (midRes >= 0x10000) {
706 geBits = geBits | 0xc;
707 }
708 replaceBits(resTemp, 31, 16, midRes);
709 Dest = resTemp;
710 resTemp = geBits;
711 ''', flagType="ge", buildNonCc=False)
712 buildRegDataInst("usax", '''
713 int32_t midRes, geBits = 0;
714 resTemp = 0;
715 int64_t arg1Low = bits(Op1.sw, 15, 0);
716 int64_t arg1High = bits(Op1.sw, 31, 16);
717 int64_t arg2Low = bits(Op2.sw, 15, 0);
718 int64_t arg2High = bits(Op2.sw, 31, 16);
719 midRes = arg1Low + arg2High;
720 if (midRes >= 0x10000) {
721 geBits = geBits | 0x3;
722 }
723 replaceBits(resTemp, 15, 0, midRes);
724 midRes = arg1High - arg2Low;
725 if (midRes >= 0) {
726 geBits = geBits | 0xc;
727 }
728 replaceBits(resTemp, 31, 16, midRes);
729 Dest = resTemp;
730 resTemp = geBits;
731 ''', flagType="ge", buildNonCc=False)
732
733 buildRegDataInst("uhadd16", '''
734 resTemp = 0;
735 for (unsigned i = 0; i < 2; i++) {
736 int high = (i + 1) * 16 - 1;
737 int low = i * 16;
738 int32_t midRes = (bits(Op1, high, low) +
739 bits(Op2, high, low)) >> 1;
740 replaceBits(resTemp, high, low, midRes);
741 }
742 Dest = resTemp;
743 ''', flagType="none", buildCc=False)
744 buildRegDataInst("uhadd8", '''
745 resTemp = 0;
746 for (unsigned i = 0; i < 4; i++) {
747 int high = (i + 1) * 8 - 1;
748 int low = i * 8;
749 int32_t midRes = (bits(Op1, high, low) +
750 bits(Op2, high, low)) >> 1;
751 replaceBits(resTemp, high, low, midRes);
752 }
753 Dest = resTemp;
754 ''', flagType="none", buildCc=False)
755 buildRegDataInst("uhsub16", '''
756 resTemp = 0;
757 for (unsigned i = 0; i < 2; i++) {
758 int high = (i + 1) * 16 - 1;
759 int low = i * 16;
760 int32_t midRes = (bits(Op1, high, low) -
761 bits(Op2, high, low)) >> 1;
762 replaceBits(resTemp, high, low, midRes);
763 }
764 Dest = resTemp;
765 ''', flagType="none", buildCc=False)
766 buildRegDataInst("uhsub8", '''
767 resTemp = 0;
768 for (unsigned i = 0; i < 4; i++) {
769 int high = (i + 1) * 8 - 1;
770 int low = i * 8;
771 int32_t midRes = (bits(Op1, high, low) -
772 bits(Op2, high, low)) >> 1;
773 replaceBits(resTemp, high, low, midRes);
774 }
775 Dest = resTemp;
776 ''', flagType="none", buildCc=False)
777 buildRegDataInst("uhasx", '''
778 int32_t midRes;
779 resTemp = 0;
780 int64_t arg1Low = bits(Op1.sw, 15, 0);
781 int64_t arg1High = bits(Op1.sw, 31, 16);
782 int64_t arg2Low = bits(Op2.sw, 15, 0);
783 int64_t arg2High = bits(Op2.sw, 31, 16);
784 midRes = (arg1Low - arg2High) >> 1;
785 replaceBits(resTemp, 15, 0, midRes);
786 midRes = (arg1High + arg2Low) >> 1;
787 replaceBits(resTemp, 31, 16, midRes);
788 Dest = resTemp;
789 ''', flagType="none", buildCc=False)
790 buildRegDataInst("uhsax", '''
791 int32_t midRes;
792 resTemp = 0;
793 int64_t arg1Low = bits(Op1.sw, 15, 0);
794 int64_t arg1High = bits(Op1.sw, 31, 16);
795 int64_t arg2Low = bits(Op2.sw, 15, 0);
796 int64_t arg2High = bits(Op2.sw, 31, 16);
797 midRes = (arg1Low + arg2High) >> 1;
798 replaceBits(resTemp, 15, 0, midRes);
799 midRes = (arg1High - arg2Low) >> 1;
800 replaceBits(resTemp, 31, 16, midRes);
801 Dest = resTemp;
802 ''', flagType="none", buildCc=False)
803
804 buildRegDataInst("pkhbt", '''
805 uint32_t resTemp = 0;
806 uint16_t arg1Low = bits(Op1, 15, 0);
807 uint16_t arg2High = bits(secondOp, 31, 16);
808 replaceBits(resTemp, 15, 0, arg1Low);
809 replaceBits(resTemp, 31, 16, arg2High);
810 Dest = resTemp;
811 ''', flagType="none", buildCc=False)
812 buildRegDataInst("pkhtb", '''
813 uint32_t resTemp = 0;
814 uint16_t arg1High = bits(Op1, 31, 16);
815 uint16_t arg2Low = bits(secondOp, 15, 0);
816 replaceBits(resTemp, 15, 0, arg2Low);
817 replaceBits(resTemp, 31, 16, arg1High);
818 Dest = resTemp;
819 ''', flagType="none", buildCc=False)
820}};