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 '''
245 buildImmDataInst(mnem + 's', code, flagType,
246 suffix = "ImmPclr", buildCc = False,
247 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
248 buildRegDataInst(mnem + 's', code, flagType,
249 suffix = "RegPclr", buildCc = False,
250 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
251
252 buildDataInst("and", "Dest = resTemp = Op1 & secondOp;")
253 buildDataInst("eor", "Dest = resTemp = Op1 ^ secondOp;")
254 buildDataInst("sub", "Dest = resTemp = Op1 - secondOp;", "sub")
255 buildDataInst("rsb", "Dest = resTemp = secondOp - Op1;", "rsb")
256 buildDataInst("add", "Dest = resTemp = Op1 + secondOp;", "add")
257 buildImmDataInst("adr", '''
258 Dest = resTemp = (PC & ~0x3) +
259 (op1 ? secondOp : -secondOp);
260 ''')
261 buildDataInst("adc", "Dest = resTemp = Op1 + secondOp + %s;" % oldC, "add")
262 buildDataInst("sbc", "Dest = resTemp = Op1 - secondOp - !%s;" % oldC, "sub")
263 buildDataInst("rsc", "Dest = resTemp = secondOp - Op1 - !%s;" % oldC, "rsb")
264 buildDataInst("tst", "resTemp = Op1 & secondOp;", aiw = False)
265 buildDataInst("teq", "resTemp = Op1 ^ secondOp;", aiw = False)
266 buildDataInst("cmp", "resTemp = Op1 - secondOp;", "sub", aiw = False)
267 buildDataInst("cmn", "resTemp = Op1 + secondOp;", "add", aiw = False)
268 buildDataInst("orr", "Dest = resTemp = Op1 | secondOp;")
269 buildDataInst("orn", "Dest = resTemp = Op1 | ~secondOp;", aiw = False)
270 buildDataInst("mov", "Dest = resTemp = secondOp;", regRegAiw = False)
271 buildDataInst("bic", "Dest = resTemp = Op1 & ~secondOp;")
272 buildDataInst("mvn", "Dest = resTemp = ~secondOp;")
273 buildDataInst("movt",
274 "Dest = resTemp = insertBits(Op1, 31, 16, secondOp);",
275 aiw = False)
276
277 buildRegDataInst("qadd", '''
278 int32_t midRes;
279 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw);
280 Dest = midRes;
281 ''', flagType="saturate", buildNonCc=False)
282 buildRegDataInst("qadd16", '''
283 int32_t midRes;
284 for (unsigned i = 0; i < 2; i++) {
285 int high = (i + 1) * 16 - 1;
286 int low = i * 16;
287 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
288 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
289 saturateOp<16>(midRes, arg1, arg2);
290 replaceBits(resTemp, high, low, midRes);
291 }
292 Dest = resTemp;
293 ''', flagType="none", buildCc=False)
294 buildRegDataInst("qadd8", '''
295 int32_t midRes;
296 for (unsigned i = 0; i < 4; i++) {
297 int high = (i + 1) * 8 - 1;
298 int low = i * 8;
299 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
300 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
301 saturateOp<8>(midRes, arg1, arg2);
302 replaceBits(resTemp, high, low, midRes);
303 }
304 Dest = resTemp;
305 ''', flagType="none", buildCc=False)
306 buildRegDataInst("qdadd", '''
307 int32_t midRes;
308 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
309 saturateOp<32>(midRes, Op1.sw, midRes);
310 Dest = midRes;
311 ''', flagType="saturate", buildNonCc=False)
312 buildRegDataInst("qsub", '''
313 int32_t midRes;
314 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw, true);
315 Dest = midRes;
316 ''', flagType="saturate")
317 buildRegDataInst("qsub16", '''
318 int32_t midRes;
319 for (unsigned i = 0; i < 2; i++) {
320 int high = (i + 1) * 16 - 1;
321 int low = i * 16;
322 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
323 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
324 saturateOp<16>(midRes, arg1, arg2, true);
325 replaceBits(resTemp, high, low, midRes);
326 }
327 Dest = resTemp;
328 ''', flagType="none", buildCc=False)
329 buildRegDataInst("qsub8", '''
330 int32_t midRes;
331 for (unsigned i = 0; i < 4; i++) {
332 int high = (i + 1) * 8 - 1;
333 int low = i * 8;
334 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
335 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
336 saturateOp<8>(midRes, arg1, arg2, true);
337 replaceBits(resTemp, high, low, midRes);
338 }
339 Dest = resTemp;
340 ''', flagType="none", buildCc=False)
341 buildRegDataInst("qdsub", '''
342 int32_t midRes;
343 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
344 saturateOp<32>(midRes, Op1.sw, midRes, true);
345 Dest = midRes;
346 ''', flagType="saturate", buildNonCc=False)
347 buildRegDataInst("qasx", '''
348 int32_t midRes;
349 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
350 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
351 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
352 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
353 saturateOp<16>(midRes, arg1Low, arg2High, true);
354 replaceBits(resTemp, 15, 0, midRes);
355 saturateOp<16>(midRes, arg1High, arg2Low);
356 replaceBits(resTemp, 31, 16, midRes);
357 Dest = resTemp;
358 ''', flagType="none", buildCc=False)
359 buildRegDataInst("qsax", '''
360 int32_t midRes;
361 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
362 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
363 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
364 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
365 saturateOp<16>(midRes, arg1Low, arg2High);
366 replaceBits(resTemp, 15, 0, midRes);
367 saturateOp<16>(midRes, arg1High, arg2Low, true);
368 replaceBits(resTemp, 31, 16, midRes);
369 Dest = resTemp;
370 ''', flagType="none", buildCc=False)
371
372 buildRegDataInst("sadd8", '''
373 uint32_t geBits = 0;
374 resTemp = 0;
375 for (unsigned i = 0; i < 4; i++) {
376 int high = (i + 1) * 8 - 1;
377 int low = i * 8;
378 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) +
379 sext<8>(bits(Op2.sw, high, low));
380 replaceBits(resTemp, high, low, midRes);
381 if (midRes >= 0) {
382 geBits = geBits | (1 << i);
383 }
384 }
385 Dest = resTemp;
386 resTemp = geBits;
387 ''', flagType="ge", buildNonCc=False)
388 buildRegDataInst("sadd16", '''
389 uint32_t geBits = 0;
390 resTemp = 0;
391 for (unsigned i = 0; i < 2; i++) {
392 int high = (i + 1) * 16 - 1;
393 int low = i * 16;
394 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) +
395 sext<16>(bits(Op2.sw, high, low));
396 replaceBits(resTemp, high, low, midRes);
397 if (midRes >= 0) {
398 geBits = geBits | (0x3 << (i * 2));
399 }
400 }
401 Dest = resTemp;
402 resTemp = geBits;
403 ''', flagType="ge", buildNonCc=False)
404
405 buildRegDataInst("ssub8", '''
406 uint32_t geBits = 0;
407 resTemp = 0;
408 for (unsigned i = 0; i < 4; i++) {
409 int high = (i + 1) * 8 - 1;
410 int low = i * 8;
411 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) -
412 sext<8>(bits(Op2.sw, high, low));
413 replaceBits(resTemp, high, low, midRes);
414 if (midRes >= 0) {
415 geBits = geBits | (1 << i);
416 }
417 }
418 Dest = resTemp;
419 resTemp = geBits;
420 ''', flagType="ge", buildNonCc=False)
421 buildRegDataInst("ssub16", '''
422 uint32_t geBits = 0;
423 resTemp = 0;
424 for (unsigned i = 0; i < 2; i++) {
425 int high = (i + 1) * 16 - 1;
426 int low = i * 16;
427 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) -
428 sext<16>(bits(Op2.sw, high, low));
429 replaceBits(resTemp, high, low, midRes);
430 if (midRes >= 0) {
431 geBits = geBits | (0x3 << (i * 2));
432 }
433 }
434 Dest = resTemp;
435 resTemp = geBits;
436 ''', flagType="ge", buildNonCc=False)
437 buildRegDataInst("sasx", '''
438 int32_t midRes, geBits = 0;
439 resTemp = 0;
440 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
441 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
442 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
443 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
444 midRes = arg1Low - arg2High;
445 if (midRes >= 0) {
446 geBits = geBits | 0x3;
447 }
448 replaceBits(resTemp, 15, 0, midRes);
449 midRes = arg1High + arg2Low;
450 if (midRes >= 0) {
451 geBits = geBits | 0xc;
452 }
453 replaceBits(resTemp, 31, 16, midRes);
454 Dest = resTemp;
455 resTemp = geBits;
456 ''', flagType="ge", buildNonCc=True)
457 buildRegDataInst("ssax", '''
458 int32_t midRes, geBits = 0;
459 resTemp = 0;
460 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
461 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
462 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
463 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
464 midRes = arg1Low + arg2High;
465 if (midRes >= 0) {
466 geBits = geBits | 0x3;
467 }
468 replaceBits(resTemp, 15, 0, midRes);
469 midRes = arg1High - arg2Low;
470 if (midRes >= 0) {
471 geBits = geBits | 0xc;
472 }
473 replaceBits(resTemp, 31, 16, midRes);
474 Dest = resTemp;
475 resTemp = geBits;
476 ''', flagType="ge", buildNonCc=True)
477
478 buildRegDataInst("shadd8", '''
479 resTemp = 0;
480 for (unsigned i = 0; i < 4; i++) {
481 int high = (i + 1) * 8 - 1;
482 int low = i * 8;
483 int32_t midRes =
484 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) +
485 sext<8>(bits(Op2.sw, high, low))) >> 1;
486 replaceBits(resTemp, high, low, midRes);
487 }
488 Dest = resTemp;
489 ''', flagType="none", buildCc=False)
490 buildRegDataInst("shadd16", '''
491 resTemp = 0;
492 for (unsigned i = 0; i < 2; i++) {
493 int high = (i + 1) * 16 - 1;
494 int low = i * 16;
495 int32_t midRes =
496 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) +
497 sext<16>(bits(Op2.sw, high, low))) >> 1;
498 replaceBits(resTemp, high, low, midRes);
499 }
500 Dest = resTemp;
501 ''', flagType="none", buildCc=False)
502 buildRegDataInst("shsub8", '''
503 resTemp = 0;
504 for (unsigned i = 0; i < 4; i++) {
505 int high = (i + 1) * 8 - 1;
506 int low = i * 8;
507 int32_t midRes =
508 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) -
509 sext<8>(bits(Op2.sw, high, low))) >> 1;
510 replaceBits(resTemp, high, low, midRes);
511 }
512 Dest = resTemp;
513 ''', flagType="none", buildCc=False)
514 buildRegDataInst("shsub16", '''
515 resTemp = 0;
516 for (unsigned i = 0; i < 2; i++) {
517 int high = (i + 1) * 16 - 1;
518 int low = i * 16;
519 int32_t midRes =
520 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) -
521 sext<16>(bits(Op2.sw, high, low))) >> 1;
522 replaceBits(resTemp, high, low, midRes);
523 }
524 Dest = resTemp;
525 ''', flagType="none", buildCc=False)
526 buildRegDataInst("shasx", '''
527 int32_t midRes;
528 resTemp = 0;
529 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
530 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
531 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
532 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
533 midRes = (uint64_t)(arg1Low - arg2High) >> 1;
534 replaceBits(resTemp, 15, 0, midRes);
535 midRes = (arg1High + arg2Low) >> 1;
536 replaceBits(resTemp, 31, 16, midRes);
537 Dest = resTemp;
538 ''', flagType="none", buildCc=True)
539 buildRegDataInst("shsax", '''
540 int32_t midRes;
541 resTemp = 0;
542 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
543 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
544 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
545 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
546 midRes = (uint64_t)(arg1Low + arg2High) >> 1;
547 replaceBits(resTemp, 15, 0, midRes);
548 midRes = (uint64_t)(arg1High - arg2Low) >> 1;
549 replaceBits(resTemp, 31, 16, midRes);
550 Dest = resTemp;
551 ''', flagType="none", buildCc=True)
552
553 buildRegDataInst("uqadd16", '''
554 uint32_t midRes;
555 for (unsigned i = 0; i < 2; i++) {
556 int high = (i + 1) * 16 - 1;
557 int low = i * 16;
558 uint64_t arg1 = bits(Op1, high, low);
559 uint64_t arg2 = bits(Op2, high, low);
560 uSaturateOp<16>(midRes, arg1, arg2);
561 replaceBits(resTemp, high, low, midRes);
562 }
563 Dest = resTemp;
564 ''', flagType="none", buildCc=False)
565 buildRegDataInst("uqadd8", '''
566 uint32_t midRes;
567 for (unsigned i = 0; i < 4; i++) {
568 int high = (i + 1) * 8 - 1;
569 int low = i * 8;
570 uint64_t arg1 = bits(Op1, high, low);
571 uint64_t arg2 = bits(Op2, high, low);
572 uSaturateOp<8>(midRes, arg1, arg2);
573 replaceBits(resTemp, high, low, midRes);
574 }
575 Dest = resTemp;
576 ''', flagType="none", buildCc=False)
577 buildRegDataInst("uqsub16", '''
578 uint32_t midRes;
579 for (unsigned i = 0; i < 2; i++) {
580 int high = (i + 1) * 16 - 1;
581 int low = i * 16;
582 uint64_t arg1 = bits(Op1, high, low);
583 uint64_t arg2 = bits(Op2, high, low);
584 uSaturateOp<16>(midRes, arg1, arg2, true);
585 replaceBits(resTemp, high, low, midRes);
586 }
587 Dest = resTemp;
588 ''', flagType="none", buildCc=False)
589 buildRegDataInst("uqsub8", '''
590 uint32_t midRes;
591 for (unsigned i = 0; i < 4; i++) {
592 int high = (i + 1) * 8 - 1;
593 int low = i * 8;
594 uint64_t arg1 = bits(Op1, high, low);
595 uint64_t arg2 = bits(Op2, high, low);
596 uSaturateOp<8>(midRes, arg1, arg2, true);
597 replaceBits(resTemp, high, low, midRes);
598 }
599 Dest = resTemp;
600 ''', flagType="none", buildCc=False)
601 buildRegDataInst("uqasx", '''
602 uint32_t midRes;
603 uint64_t arg1Low = bits(Op1.sw, 15, 0);
604 uint64_t arg1High = bits(Op1.sw, 31, 16);
605 uint64_t arg2Low = bits(Op2.sw, 15, 0);
606 uint64_t arg2High = bits(Op2.sw, 31, 16);
607 uSaturateOp<16>(midRes, arg1Low, arg2High, true);
608 replaceBits(resTemp, 15, 0, midRes);
609 uSaturateOp<16>(midRes, arg1High, arg2Low);
610 replaceBits(resTemp, 31, 16, midRes);
611 Dest = resTemp;
612 ''', flagType="none", buildCc=False)
613 buildRegDataInst("uqsax", '''
614 uint32_t midRes;
615 uint64_t arg1Low = bits(Op1.sw, 15, 0);
616 uint64_t arg1High = bits(Op1.sw, 31, 16);
617 uint64_t arg2Low = bits(Op2.sw, 15, 0);
618 uint64_t arg2High = bits(Op2.sw, 31, 16);
619 uSaturateOp<16>(midRes, arg1Low, arg2High);
620 replaceBits(resTemp, 15, 0, midRes);
621 uSaturateOp<16>(midRes, arg1High, arg2Low, true);
622 replaceBits(resTemp, 31, 16, midRes);
623 Dest = resTemp;
624 ''', flagType="none", buildCc=False)
625
626 buildRegDataInst("uadd16", '''
627 uint32_t geBits = 0;
628 resTemp = 0;
629 for (unsigned i = 0; i < 2; i++) {
630 int high = (i + 1) * 16 - 1;
631 int low = i * 16;
632 int32_t midRes = bits(Op1, high, low) +
633 bits(Op2, high, low);
634 if (midRes >= 0x10000) {
635 geBits = geBits | (0x3 << (i * 2));
636 }
637 replaceBits(resTemp, high, low, midRes);
638 }
639 Dest = resTemp;
640 resTemp = geBits;
641 ''', flagType="ge", buildNonCc=False)
642 buildRegDataInst("uadd8", '''
643 uint32_t geBits = 0;
644 resTemp = 0;
645 for (unsigned i = 0; i < 4; i++) {
646 int high = (i + 1) * 8 - 1;
647 int low = i * 8;
648 int32_t midRes = bits(Op1, high, low) +
649 bits(Op2, high, low);
650 if (midRes >= 0x100) {
651 geBits = geBits | (1 << i);
652 }
653 replaceBits(resTemp, high, low, midRes);
654 }
655 Dest = resTemp;
656 resTemp = geBits;
657 ''', flagType="ge", buildNonCc=False)
658 buildRegDataInst("usub16", '''
659 uint32_t geBits = 0;
660 resTemp = 0;
661 for (unsigned i = 0; i < 2; i++) {
662 int high = (i + 1) * 16 - 1;
663 int low = i * 16;
664 int32_t midRes = bits(Op1, high, low) -
665 bits(Op2, high, low);
666 if (midRes >= 0) {
667 geBits = geBits | (0x3 << (i * 2));
668 }
669 replaceBits(resTemp, high, low, midRes);
670 }
671 Dest = resTemp;
672 resTemp = geBits;
673 ''', flagType="ge", buildNonCc=False)
674 buildRegDataInst("usub8", '''
675 uint32_t geBits = 0;
676 resTemp = 0;
677 for (unsigned i = 0; i < 4; i++) {
678 int high = (i + 1) * 8 - 1;
679 int low = i * 8;
680 int32_t midRes = bits(Op1, high, low) -
681 bits(Op2, high, low);
682 if (midRes >= 0) {
683 geBits = geBits | (1 << i);
684 }
685 replaceBits(resTemp, high, low, midRes);
686 }
687 Dest = resTemp;
688 resTemp = geBits;
689 ''', flagType="ge", buildNonCc=False)
690 buildRegDataInst("uasx", '''
691 int32_t midRes, geBits = 0;
692 resTemp = 0;
693 int64_t arg1Low = bits(Op1.sw, 15, 0);
694 int64_t arg1High = bits(Op1.sw, 31, 16);
695 int64_t arg2Low = bits(Op2.sw, 15, 0);
696 int64_t arg2High = bits(Op2.sw, 31, 16);
697 midRes = arg1Low - arg2High;
698 if (midRes >= 0) {
699 geBits = geBits | 0x3;
700 }
701 replaceBits(resTemp, 15, 0, midRes);
702 midRes = arg1High + arg2Low;
703 if (midRes >= 0x10000) {
704 geBits = geBits | 0xc;
705 }
706 replaceBits(resTemp, 31, 16, midRes);
707 Dest = resTemp;
708 resTemp = geBits;
709 ''', flagType="ge", buildNonCc=False)
710 buildRegDataInst("usax", '''
711 int32_t midRes, geBits = 0;
712 resTemp = 0;
713 int64_t arg1Low = bits(Op1.sw, 15, 0);
714 int64_t arg1High = bits(Op1.sw, 31, 16);
715 int64_t arg2Low = bits(Op2.sw, 15, 0);
716 int64_t arg2High = bits(Op2.sw, 31, 16);
717 midRes = arg1Low + arg2High;
718 if (midRes >= 0x10000) {
719 geBits = geBits | 0x3;
720 }
721 replaceBits(resTemp, 15, 0, midRes);
722 midRes = arg1High - arg2Low;
723 if (midRes >= 0) {
724 geBits = geBits | 0xc;
725 }
726 replaceBits(resTemp, 31, 16, midRes);
727 Dest = resTemp;
728 resTemp = geBits;
729 ''', flagType="ge", buildNonCc=False)
730
731 buildRegDataInst("uhadd16", '''
732 resTemp = 0;
733 for (unsigned i = 0; i < 2; i++) {
734 int high = (i + 1) * 16 - 1;
735 int low = i * 16;
736 int32_t midRes = (bits(Op1, high, low) +
737 bits(Op2, high, low)) >> 1;
738 replaceBits(resTemp, high, low, midRes);
739 }
740 Dest = resTemp;
741 ''', flagType="none", buildCc=False)
742 buildRegDataInst("uhadd8", '''
743 resTemp = 0;
744 for (unsigned i = 0; i < 4; i++) {
745 int high = (i + 1) * 8 - 1;
746 int low = i * 8;
747 int32_t midRes = (bits(Op1, high, low) +
748 bits(Op2, high, low)) >> 1;
749 replaceBits(resTemp, high, low, midRes);
750 }
751 Dest = resTemp;
752 ''', flagType="none", buildCc=False)
753 buildRegDataInst("uhsub16", '''
754 resTemp = 0;
755 for (unsigned i = 0; i < 2; i++) {
756 int high = (i + 1) * 16 - 1;
757 int low = i * 16;
758 int32_t midRes = (bits(Op1, high, low) -
759 bits(Op2, high, low)) >> 1;
760 replaceBits(resTemp, high, low, midRes);
761 }
762 Dest = resTemp;
763 ''', flagType="none", buildCc=False)
764 buildRegDataInst("uhsub8", '''
765 resTemp = 0;
766 for (unsigned i = 0; i < 4; i++) {
767 int high = (i + 1) * 8 - 1;
768 int low = i * 8;
769 int32_t midRes = (bits(Op1, high, low) -
770 bits(Op2, high, low)) >> 1;
771 replaceBits(resTemp, high, low, midRes);
772 }
773 Dest = resTemp;
774 ''', flagType="none", buildCc=False)
775 buildRegDataInst("uhasx", '''
776 int32_t midRes;
777 resTemp = 0;
778 int64_t arg1Low = bits(Op1.sw, 15, 0);
779 int64_t arg1High = bits(Op1.sw, 31, 16);
780 int64_t arg2Low = bits(Op2.sw, 15, 0);
781 int64_t arg2High = bits(Op2.sw, 31, 16);
782 midRes = (arg1Low - arg2High) >> 1;
783 replaceBits(resTemp, 15, 0, midRes);
784 midRes = (arg1High + arg2Low) >> 1;
785 replaceBits(resTemp, 31, 16, midRes);
786 Dest = resTemp;
787 ''', flagType="none", buildCc=False)
788 buildRegDataInst("uhsax", '''
789 int32_t midRes;
790 resTemp = 0;
791 int64_t arg1Low = bits(Op1.sw, 15, 0);
792 int64_t arg1High = bits(Op1.sw, 31, 16);
793 int64_t arg2Low = bits(Op2.sw, 15, 0);
794 int64_t arg2High = bits(Op2.sw, 31, 16);
795 midRes = (arg1Low + arg2High) >> 1;
796 replaceBits(resTemp, 15, 0, midRes);
797 midRes = (arg1High - arg2Low) >> 1;
798 replaceBits(resTemp, 31, 16, midRes);
799 Dest = resTemp;
800 ''', flagType="none", buildCc=False)
801
802 buildRegDataInst("pkhbt", '''
803 uint32_t resTemp = 0;
804 uint16_t arg1Low = bits(Op1, 15, 0);
805 uint16_t arg2High = bits(secondOp, 31, 16);
806 replaceBits(resTemp, 15, 0, arg1Low);
807 replaceBits(resTemp, 31, 16, arg2High);
808 Dest = resTemp;
809 ''', flagType="none", buildCc=False)
810 buildRegDataInst("pkhtb", '''
811 uint32_t resTemp = 0;
812 uint16_t arg1High = bits(Op1, 31, 16);
813 uint16_t arg2Low = bits(secondOp, 15, 0);
814 replaceBits(resTemp, 15, 0, arg2Low);
815 replaceBits(resTemp, 31, 16, arg1High);
816 Dest = resTemp;
817 ''', flagType="none", buildCc=False)
818}};
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 '''
245 buildImmDataInst(mnem + 's', code, flagType,
246 suffix = "ImmPclr", buildCc = False,
247 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
248 buildRegDataInst(mnem + 's', code, flagType,
249 suffix = "RegPclr", buildCc = False,
250 instFlags = ["IsSerializeAfter","IsNonSpeculative"])
251
252 buildDataInst("and", "Dest = resTemp = Op1 & secondOp;")
253 buildDataInst("eor", "Dest = resTemp = Op1 ^ secondOp;")
254 buildDataInst("sub", "Dest = resTemp = Op1 - secondOp;", "sub")
255 buildDataInst("rsb", "Dest = resTemp = secondOp - Op1;", "rsb")
256 buildDataInst("add", "Dest = resTemp = Op1 + secondOp;", "add")
257 buildImmDataInst("adr", '''
258 Dest = resTemp = (PC & ~0x3) +
259 (op1 ? secondOp : -secondOp);
260 ''')
261 buildDataInst("adc", "Dest = resTemp = Op1 + secondOp + %s;" % oldC, "add")
262 buildDataInst("sbc", "Dest = resTemp = Op1 - secondOp - !%s;" % oldC, "sub")
263 buildDataInst("rsc", "Dest = resTemp = secondOp - Op1 - !%s;" % oldC, "rsb")
264 buildDataInst("tst", "resTemp = Op1 & secondOp;", aiw = False)
265 buildDataInst("teq", "resTemp = Op1 ^ secondOp;", aiw = False)
266 buildDataInst("cmp", "resTemp = Op1 - secondOp;", "sub", aiw = False)
267 buildDataInst("cmn", "resTemp = Op1 + secondOp;", "add", aiw = False)
268 buildDataInst("orr", "Dest = resTemp = Op1 | secondOp;")
269 buildDataInst("orn", "Dest = resTemp = Op1 | ~secondOp;", aiw = False)
270 buildDataInst("mov", "Dest = resTemp = secondOp;", regRegAiw = False)
271 buildDataInst("bic", "Dest = resTemp = Op1 & ~secondOp;")
272 buildDataInst("mvn", "Dest = resTemp = ~secondOp;")
273 buildDataInst("movt",
274 "Dest = resTemp = insertBits(Op1, 31, 16, secondOp);",
275 aiw = False)
276
277 buildRegDataInst("qadd", '''
278 int32_t midRes;
279 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw);
280 Dest = midRes;
281 ''', flagType="saturate", buildNonCc=False)
282 buildRegDataInst("qadd16", '''
283 int32_t midRes;
284 for (unsigned i = 0; i < 2; i++) {
285 int high = (i + 1) * 16 - 1;
286 int low = i * 16;
287 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
288 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
289 saturateOp<16>(midRes, arg1, arg2);
290 replaceBits(resTemp, high, low, midRes);
291 }
292 Dest = resTemp;
293 ''', flagType="none", buildCc=False)
294 buildRegDataInst("qadd8", '''
295 int32_t midRes;
296 for (unsigned i = 0; i < 4; i++) {
297 int high = (i + 1) * 8 - 1;
298 int low = i * 8;
299 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
300 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
301 saturateOp<8>(midRes, arg1, arg2);
302 replaceBits(resTemp, high, low, midRes);
303 }
304 Dest = resTemp;
305 ''', flagType="none", buildCc=False)
306 buildRegDataInst("qdadd", '''
307 int32_t midRes;
308 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
309 saturateOp<32>(midRes, Op1.sw, midRes);
310 Dest = midRes;
311 ''', flagType="saturate", buildNonCc=False)
312 buildRegDataInst("qsub", '''
313 int32_t midRes;
314 resTemp = saturateOp<32>(midRes, Op1.sw, Op2.sw, true);
315 Dest = midRes;
316 ''', flagType="saturate")
317 buildRegDataInst("qsub16", '''
318 int32_t midRes;
319 for (unsigned i = 0; i < 2; i++) {
320 int high = (i + 1) * 16 - 1;
321 int low = i * 16;
322 int64_t arg1 = sext<16>(bits(Op1.sw, high, low));
323 int64_t arg2 = sext<16>(bits(Op2.sw, high, low));
324 saturateOp<16>(midRes, arg1, arg2, true);
325 replaceBits(resTemp, high, low, midRes);
326 }
327 Dest = resTemp;
328 ''', flagType="none", buildCc=False)
329 buildRegDataInst("qsub8", '''
330 int32_t midRes;
331 for (unsigned i = 0; i < 4; i++) {
332 int high = (i + 1) * 8 - 1;
333 int low = i * 8;
334 int64_t arg1 = sext<8>(bits(Op1.sw, high, low));
335 int64_t arg2 = sext<8>(bits(Op2.sw, high, low));
336 saturateOp<8>(midRes, arg1, arg2, true);
337 replaceBits(resTemp, high, low, midRes);
338 }
339 Dest = resTemp;
340 ''', flagType="none", buildCc=False)
341 buildRegDataInst("qdsub", '''
342 int32_t midRes;
343 resTemp = saturateOp<32>(midRes, Op2.sw, Op2.sw) |
344 saturateOp<32>(midRes, Op1.sw, midRes, true);
345 Dest = midRes;
346 ''', flagType="saturate", buildNonCc=False)
347 buildRegDataInst("qasx", '''
348 int32_t midRes;
349 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
350 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
351 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
352 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
353 saturateOp<16>(midRes, arg1Low, arg2High, true);
354 replaceBits(resTemp, 15, 0, midRes);
355 saturateOp<16>(midRes, arg1High, arg2Low);
356 replaceBits(resTemp, 31, 16, midRes);
357 Dest = resTemp;
358 ''', flagType="none", buildCc=False)
359 buildRegDataInst("qsax", '''
360 int32_t midRes;
361 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
362 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
363 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
364 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
365 saturateOp<16>(midRes, arg1Low, arg2High);
366 replaceBits(resTemp, 15, 0, midRes);
367 saturateOp<16>(midRes, arg1High, arg2Low, true);
368 replaceBits(resTemp, 31, 16, midRes);
369 Dest = resTemp;
370 ''', flagType="none", buildCc=False)
371
372 buildRegDataInst("sadd8", '''
373 uint32_t geBits = 0;
374 resTemp = 0;
375 for (unsigned i = 0; i < 4; i++) {
376 int high = (i + 1) * 8 - 1;
377 int low = i * 8;
378 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) +
379 sext<8>(bits(Op2.sw, high, low));
380 replaceBits(resTemp, high, low, midRes);
381 if (midRes >= 0) {
382 geBits = geBits | (1 << i);
383 }
384 }
385 Dest = resTemp;
386 resTemp = geBits;
387 ''', flagType="ge", buildNonCc=False)
388 buildRegDataInst("sadd16", '''
389 uint32_t geBits = 0;
390 resTemp = 0;
391 for (unsigned i = 0; i < 2; i++) {
392 int high = (i + 1) * 16 - 1;
393 int low = i * 16;
394 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) +
395 sext<16>(bits(Op2.sw, high, low));
396 replaceBits(resTemp, high, low, midRes);
397 if (midRes >= 0) {
398 geBits = geBits | (0x3 << (i * 2));
399 }
400 }
401 Dest = resTemp;
402 resTemp = geBits;
403 ''', flagType="ge", buildNonCc=False)
404
405 buildRegDataInst("ssub8", '''
406 uint32_t geBits = 0;
407 resTemp = 0;
408 for (unsigned i = 0; i < 4; i++) {
409 int high = (i + 1) * 8 - 1;
410 int low = i * 8;
411 int32_t midRes = sext<8>(bits(Op1.sw, high, low)) -
412 sext<8>(bits(Op2.sw, high, low));
413 replaceBits(resTemp, high, low, midRes);
414 if (midRes >= 0) {
415 geBits = geBits | (1 << i);
416 }
417 }
418 Dest = resTemp;
419 resTemp = geBits;
420 ''', flagType="ge", buildNonCc=False)
421 buildRegDataInst("ssub16", '''
422 uint32_t geBits = 0;
423 resTemp = 0;
424 for (unsigned i = 0; i < 2; i++) {
425 int high = (i + 1) * 16 - 1;
426 int low = i * 16;
427 int32_t midRes = sext<16>(bits(Op1.sw, high, low)) -
428 sext<16>(bits(Op2.sw, high, low));
429 replaceBits(resTemp, high, low, midRes);
430 if (midRes >= 0) {
431 geBits = geBits | (0x3 << (i * 2));
432 }
433 }
434 Dest = resTemp;
435 resTemp = geBits;
436 ''', flagType="ge", buildNonCc=False)
437 buildRegDataInst("sasx", '''
438 int32_t midRes, geBits = 0;
439 resTemp = 0;
440 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
441 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
442 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
443 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
444 midRes = arg1Low - arg2High;
445 if (midRes >= 0) {
446 geBits = geBits | 0x3;
447 }
448 replaceBits(resTemp, 15, 0, midRes);
449 midRes = arg1High + arg2Low;
450 if (midRes >= 0) {
451 geBits = geBits | 0xc;
452 }
453 replaceBits(resTemp, 31, 16, midRes);
454 Dest = resTemp;
455 resTemp = geBits;
456 ''', flagType="ge", buildNonCc=True)
457 buildRegDataInst("ssax", '''
458 int32_t midRes, geBits = 0;
459 resTemp = 0;
460 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
461 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
462 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
463 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
464 midRes = arg1Low + arg2High;
465 if (midRes >= 0) {
466 geBits = geBits | 0x3;
467 }
468 replaceBits(resTemp, 15, 0, midRes);
469 midRes = arg1High - arg2Low;
470 if (midRes >= 0) {
471 geBits = geBits | 0xc;
472 }
473 replaceBits(resTemp, 31, 16, midRes);
474 Dest = resTemp;
475 resTemp = geBits;
476 ''', flagType="ge", buildNonCc=True)
477
478 buildRegDataInst("shadd8", '''
479 resTemp = 0;
480 for (unsigned i = 0; i < 4; i++) {
481 int high = (i + 1) * 8 - 1;
482 int low = i * 8;
483 int32_t midRes =
484 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) +
485 sext<8>(bits(Op2.sw, high, low))) >> 1;
486 replaceBits(resTemp, high, low, midRes);
487 }
488 Dest = resTemp;
489 ''', flagType="none", buildCc=False)
490 buildRegDataInst("shadd16", '''
491 resTemp = 0;
492 for (unsigned i = 0; i < 2; i++) {
493 int high = (i + 1) * 16 - 1;
494 int low = i * 16;
495 int32_t midRes =
496 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) +
497 sext<16>(bits(Op2.sw, high, low))) >> 1;
498 replaceBits(resTemp, high, low, midRes);
499 }
500 Dest = resTemp;
501 ''', flagType="none", buildCc=False)
502 buildRegDataInst("shsub8", '''
503 resTemp = 0;
504 for (unsigned i = 0; i < 4; i++) {
505 int high = (i + 1) * 8 - 1;
506 int low = i * 8;
507 int32_t midRes =
508 (uint64_t)(sext<8>(bits(Op1.sw, high, low)) -
509 sext<8>(bits(Op2.sw, high, low))) >> 1;
510 replaceBits(resTemp, high, low, midRes);
511 }
512 Dest = resTemp;
513 ''', flagType="none", buildCc=False)
514 buildRegDataInst("shsub16", '''
515 resTemp = 0;
516 for (unsigned i = 0; i < 2; i++) {
517 int high = (i + 1) * 16 - 1;
518 int low = i * 16;
519 int32_t midRes =
520 (uint64_t)(sext<16>(bits(Op1.sw, high, low)) -
521 sext<16>(bits(Op2.sw, high, low))) >> 1;
522 replaceBits(resTemp, high, low, midRes);
523 }
524 Dest = resTemp;
525 ''', flagType="none", buildCc=False)
526 buildRegDataInst("shasx", '''
527 int32_t midRes;
528 resTemp = 0;
529 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
530 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
531 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
532 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
533 midRes = (uint64_t)(arg1Low - arg2High) >> 1;
534 replaceBits(resTemp, 15, 0, midRes);
535 midRes = (arg1High + arg2Low) >> 1;
536 replaceBits(resTemp, 31, 16, midRes);
537 Dest = resTemp;
538 ''', flagType="none", buildCc=True)
539 buildRegDataInst("shsax", '''
540 int32_t midRes;
541 resTemp = 0;
542 int64_t arg1Low = sext<16>(bits(Op1.sw, 15, 0));
543 int64_t arg1High = sext<16>(bits(Op1.sw, 31, 16));
544 int64_t arg2Low = sext<16>(bits(Op2.sw, 15, 0));
545 int64_t arg2High = sext<16>(bits(Op2.sw, 31, 16));
546 midRes = (uint64_t)(arg1Low + arg2High) >> 1;
547 replaceBits(resTemp, 15, 0, midRes);
548 midRes = (uint64_t)(arg1High - arg2Low) >> 1;
549 replaceBits(resTemp, 31, 16, midRes);
550 Dest = resTemp;
551 ''', flagType="none", buildCc=True)
552
553 buildRegDataInst("uqadd16", '''
554 uint32_t midRes;
555 for (unsigned i = 0; i < 2; i++) {
556 int high = (i + 1) * 16 - 1;
557 int low = i * 16;
558 uint64_t arg1 = bits(Op1, high, low);
559 uint64_t arg2 = bits(Op2, high, low);
560 uSaturateOp<16>(midRes, arg1, arg2);
561 replaceBits(resTemp, high, low, midRes);
562 }
563 Dest = resTemp;
564 ''', flagType="none", buildCc=False)
565 buildRegDataInst("uqadd8", '''
566 uint32_t midRes;
567 for (unsigned i = 0; i < 4; i++) {
568 int high = (i + 1) * 8 - 1;
569 int low = i * 8;
570 uint64_t arg1 = bits(Op1, high, low);
571 uint64_t arg2 = bits(Op2, high, low);
572 uSaturateOp<8>(midRes, arg1, arg2);
573 replaceBits(resTemp, high, low, midRes);
574 }
575 Dest = resTemp;
576 ''', flagType="none", buildCc=False)
577 buildRegDataInst("uqsub16", '''
578 uint32_t midRes;
579 for (unsigned i = 0; i < 2; i++) {
580 int high = (i + 1) * 16 - 1;
581 int low = i * 16;
582 uint64_t arg1 = bits(Op1, high, low);
583 uint64_t arg2 = bits(Op2, high, low);
584 uSaturateOp<16>(midRes, arg1, arg2, true);
585 replaceBits(resTemp, high, low, midRes);
586 }
587 Dest = resTemp;
588 ''', flagType="none", buildCc=False)
589 buildRegDataInst("uqsub8", '''
590 uint32_t midRes;
591 for (unsigned i = 0; i < 4; i++) {
592 int high = (i + 1) * 8 - 1;
593 int low = i * 8;
594 uint64_t arg1 = bits(Op1, high, low);
595 uint64_t arg2 = bits(Op2, high, low);
596 uSaturateOp<8>(midRes, arg1, arg2, true);
597 replaceBits(resTemp, high, low, midRes);
598 }
599 Dest = resTemp;
600 ''', flagType="none", buildCc=False)
601 buildRegDataInst("uqasx", '''
602 uint32_t midRes;
603 uint64_t arg1Low = bits(Op1.sw, 15, 0);
604 uint64_t arg1High = bits(Op1.sw, 31, 16);
605 uint64_t arg2Low = bits(Op2.sw, 15, 0);
606 uint64_t arg2High = bits(Op2.sw, 31, 16);
607 uSaturateOp<16>(midRes, arg1Low, arg2High, true);
608 replaceBits(resTemp, 15, 0, midRes);
609 uSaturateOp<16>(midRes, arg1High, arg2Low);
610 replaceBits(resTemp, 31, 16, midRes);
611 Dest = resTemp;
612 ''', flagType="none", buildCc=False)
613 buildRegDataInst("uqsax", '''
614 uint32_t midRes;
615 uint64_t arg1Low = bits(Op1.sw, 15, 0);
616 uint64_t arg1High = bits(Op1.sw, 31, 16);
617 uint64_t arg2Low = bits(Op2.sw, 15, 0);
618 uint64_t arg2High = bits(Op2.sw, 31, 16);
619 uSaturateOp<16>(midRes, arg1Low, arg2High);
620 replaceBits(resTemp, 15, 0, midRes);
621 uSaturateOp<16>(midRes, arg1High, arg2Low, true);
622 replaceBits(resTemp, 31, 16, midRes);
623 Dest = resTemp;
624 ''', flagType="none", buildCc=False)
625
626 buildRegDataInst("uadd16", '''
627 uint32_t geBits = 0;
628 resTemp = 0;
629 for (unsigned i = 0; i < 2; i++) {
630 int high = (i + 1) * 16 - 1;
631 int low = i * 16;
632 int32_t midRes = bits(Op1, high, low) +
633 bits(Op2, high, low);
634 if (midRes >= 0x10000) {
635 geBits = geBits | (0x3 << (i * 2));
636 }
637 replaceBits(resTemp, high, low, midRes);
638 }
639 Dest = resTemp;
640 resTemp = geBits;
641 ''', flagType="ge", buildNonCc=False)
642 buildRegDataInst("uadd8", '''
643 uint32_t geBits = 0;
644 resTemp = 0;
645 for (unsigned i = 0; i < 4; i++) {
646 int high = (i + 1) * 8 - 1;
647 int low = i * 8;
648 int32_t midRes = bits(Op1, high, low) +
649 bits(Op2, high, low);
650 if (midRes >= 0x100) {
651 geBits = geBits | (1 << i);
652 }
653 replaceBits(resTemp, high, low, midRes);
654 }
655 Dest = resTemp;
656 resTemp = geBits;
657 ''', flagType="ge", buildNonCc=False)
658 buildRegDataInst("usub16", '''
659 uint32_t geBits = 0;
660 resTemp = 0;
661 for (unsigned i = 0; i < 2; i++) {
662 int high = (i + 1) * 16 - 1;
663 int low = i * 16;
664 int32_t midRes = bits(Op1, high, low) -
665 bits(Op2, high, low);
666 if (midRes >= 0) {
667 geBits = geBits | (0x3 << (i * 2));
668 }
669 replaceBits(resTemp, high, low, midRes);
670 }
671 Dest = resTemp;
672 resTemp = geBits;
673 ''', flagType="ge", buildNonCc=False)
674 buildRegDataInst("usub8", '''
675 uint32_t geBits = 0;
676 resTemp = 0;
677 for (unsigned i = 0; i < 4; i++) {
678 int high = (i + 1) * 8 - 1;
679 int low = i * 8;
680 int32_t midRes = bits(Op1, high, low) -
681 bits(Op2, high, low);
682 if (midRes >= 0) {
683 geBits = geBits | (1 << i);
684 }
685 replaceBits(resTemp, high, low, midRes);
686 }
687 Dest = resTemp;
688 resTemp = geBits;
689 ''', flagType="ge", buildNonCc=False)
690 buildRegDataInst("uasx", '''
691 int32_t midRes, geBits = 0;
692 resTemp = 0;
693 int64_t arg1Low = bits(Op1.sw, 15, 0);
694 int64_t arg1High = bits(Op1.sw, 31, 16);
695 int64_t arg2Low = bits(Op2.sw, 15, 0);
696 int64_t arg2High = bits(Op2.sw, 31, 16);
697 midRes = arg1Low - arg2High;
698 if (midRes >= 0) {
699 geBits = geBits | 0x3;
700 }
701 replaceBits(resTemp, 15, 0, midRes);
702 midRes = arg1High + arg2Low;
703 if (midRes >= 0x10000) {
704 geBits = geBits | 0xc;
705 }
706 replaceBits(resTemp, 31, 16, midRes);
707 Dest = resTemp;
708 resTemp = geBits;
709 ''', flagType="ge", buildNonCc=False)
710 buildRegDataInst("usax", '''
711 int32_t midRes, geBits = 0;
712 resTemp = 0;
713 int64_t arg1Low = bits(Op1.sw, 15, 0);
714 int64_t arg1High = bits(Op1.sw, 31, 16);
715 int64_t arg2Low = bits(Op2.sw, 15, 0);
716 int64_t arg2High = bits(Op2.sw, 31, 16);
717 midRes = arg1Low + arg2High;
718 if (midRes >= 0x10000) {
719 geBits = geBits | 0x3;
720 }
721 replaceBits(resTemp, 15, 0, midRes);
722 midRes = arg1High - arg2Low;
723 if (midRes >= 0) {
724 geBits = geBits | 0xc;
725 }
726 replaceBits(resTemp, 31, 16, midRes);
727 Dest = resTemp;
728 resTemp = geBits;
729 ''', flagType="ge", buildNonCc=False)
730
731 buildRegDataInst("uhadd16", '''
732 resTemp = 0;
733 for (unsigned i = 0; i < 2; i++) {
734 int high = (i + 1) * 16 - 1;
735 int low = i * 16;
736 int32_t midRes = (bits(Op1, high, low) +
737 bits(Op2, high, low)) >> 1;
738 replaceBits(resTemp, high, low, midRes);
739 }
740 Dest = resTemp;
741 ''', flagType="none", buildCc=False)
742 buildRegDataInst("uhadd8", '''
743 resTemp = 0;
744 for (unsigned i = 0; i < 4; i++) {
745 int high = (i + 1) * 8 - 1;
746 int low = i * 8;
747 int32_t midRes = (bits(Op1, high, low) +
748 bits(Op2, high, low)) >> 1;
749 replaceBits(resTemp, high, low, midRes);
750 }
751 Dest = resTemp;
752 ''', flagType="none", buildCc=False)
753 buildRegDataInst("uhsub16", '''
754 resTemp = 0;
755 for (unsigned i = 0; i < 2; i++) {
756 int high = (i + 1) * 16 - 1;
757 int low = i * 16;
758 int32_t midRes = (bits(Op1, high, low) -
759 bits(Op2, high, low)) >> 1;
760 replaceBits(resTemp, high, low, midRes);
761 }
762 Dest = resTemp;
763 ''', flagType="none", buildCc=False)
764 buildRegDataInst("uhsub8", '''
765 resTemp = 0;
766 for (unsigned i = 0; i < 4; i++) {
767 int high = (i + 1) * 8 - 1;
768 int low = i * 8;
769 int32_t midRes = (bits(Op1, high, low) -
770 bits(Op2, high, low)) >> 1;
771 replaceBits(resTemp, high, low, midRes);
772 }
773 Dest = resTemp;
774 ''', flagType="none", buildCc=False)
775 buildRegDataInst("uhasx", '''
776 int32_t midRes;
777 resTemp = 0;
778 int64_t arg1Low = bits(Op1.sw, 15, 0);
779 int64_t arg1High = bits(Op1.sw, 31, 16);
780 int64_t arg2Low = bits(Op2.sw, 15, 0);
781 int64_t arg2High = bits(Op2.sw, 31, 16);
782 midRes = (arg1Low - arg2High) >> 1;
783 replaceBits(resTemp, 15, 0, midRes);
784 midRes = (arg1High + arg2Low) >> 1;
785 replaceBits(resTemp, 31, 16, midRes);
786 Dest = resTemp;
787 ''', flagType="none", buildCc=False)
788 buildRegDataInst("uhsax", '''
789 int32_t midRes;
790 resTemp = 0;
791 int64_t arg1Low = bits(Op1.sw, 15, 0);
792 int64_t arg1High = bits(Op1.sw, 31, 16);
793 int64_t arg2Low = bits(Op2.sw, 15, 0);
794 int64_t arg2High = bits(Op2.sw, 31, 16);
795 midRes = (arg1Low + arg2High) >> 1;
796 replaceBits(resTemp, 15, 0, midRes);
797 midRes = (arg1High - arg2Low) >> 1;
798 replaceBits(resTemp, 31, 16, midRes);
799 Dest = resTemp;
800 ''', flagType="none", buildCc=False)
801
802 buildRegDataInst("pkhbt", '''
803 uint32_t resTemp = 0;
804 uint16_t arg1Low = bits(Op1, 15, 0);
805 uint16_t arg2High = bits(secondOp, 31, 16);
806 replaceBits(resTemp, 15, 0, arg1Low);
807 replaceBits(resTemp, 31, 16, arg2High);
808 Dest = resTemp;
809 ''', flagType="none", buildCc=False)
810 buildRegDataInst("pkhtb", '''
811 uint32_t resTemp = 0;
812 uint16_t arg1High = bits(Op1, 31, 16);
813 uint16_t arg2Low = bits(secondOp, 15, 0);
814 replaceBits(resTemp, 15, 0, arg2Low);
815 replaceBits(resTemp, 31, 16, arg1High);
816 Dest = resTemp;
817 ''', flagType="none", buildCc=False)
818}};