misc.isa revision 8205 
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    svcCode = '''
43#if FULL_SYSTEM
44    fault = new SupervisorCall;
45#else
46    fault = new SupervisorCall(machInst);
47#endif
48    '''
49
50    svcIop = InstObjParams("svc", "Svc", "PredOp",
51                           { "code": svcCode,
52                             "predicate_test": predicateTest }, ["IsSyscall"])
53    header_output = BasicDeclare.subst(svcIop)
54    decoder_output = BasicConstructor.subst(svcIop)
55    exec_output = PredOpExecute.subst(svcIop)
56
57}};
58
59let {{
60
61    header_output = decoder_output = exec_output = ""
62
63    mrsCpsrCode = "Dest = (Cpsr | CondCodes) & 0xF8FF03DF"
64    mrsCpsrIop = InstObjParams("mrs", "MrsCpsr", "MrsOp",
65                               { "code": mrsCpsrCode,
66                                 "predicate_test": condPredicateTest },
67                               ["IsSerializeBefore"])
68    header_output += MrsDeclare.subst(mrsCpsrIop)
69    decoder_output += MrsConstructor.subst(mrsCpsrIop)
70    exec_output += PredOpExecute.subst(mrsCpsrIop)
71
72    mrsSpsrCode = "Dest = Spsr"
73    mrsSpsrIop = InstObjParams("mrs", "MrsSpsr", "MrsOp",
74                               { "code": mrsSpsrCode,
75                                 "predicate_test": predicateTest },
76                               ["IsSerializeBefore"])
77    header_output += MrsDeclare.subst(mrsSpsrIop)
78    decoder_output += MrsConstructor.subst(mrsSpsrIop)
79    exec_output += PredOpExecute.subst(mrsSpsrIop)
80
81    msrCpsrRegCode = '''
82        SCTLR sctlr = Sctlr;
83        uint32_t newCpsr =
84            cpsrWriteByInstr(Cpsr | CondCodes, Op1, byteMask, false, sctlr.nmfi);
85        Cpsr = ~CondCodesMask & newCpsr;
86        CondCodes = CondCodesMask & newCpsr;
87    '''
88    msrCpsrRegIop = InstObjParams("msr", "MsrCpsrReg", "MsrRegOp",
89                                  { "code": msrCpsrRegCode,
90                                    "predicate_test": condPredicateTest },
91                                  ["IsSerializeAfter","IsNonSpeculative"])
92    header_output += MsrRegDeclare.subst(msrCpsrRegIop)
93    decoder_output += MsrRegConstructor.subst(msrCpsrRegIop)
94    exec_output += PredOpExecute.subst(msrCpsrRegIop)
95
96    msrSpsrRegCode = "Spsr = spsrWriteByInstr(Spsr, Op1, byteMask, false);"
97    msrSpsrRegIop = InstObjParams("msr", "MsrSpsrReg", "MsrRegOp",
98                                  { "code": msrSpsrRegCode,
99                                    "predicate_test": predicateTest },
100                                  ["IsSerializeAfter","IsNonSpeculative"])
101    header_output += MsrRegDeclare.subst(msrSpsrRegIop)
102    decoder_output += MsrRegConstructor.subst(msrSpsrRegIop)
103    exec_output += PredOpExecute.subst(msrSpsrRegIop)
104
105    msrCpsrImmCode = '''
106        SCTLR sctlr = Sctlr;
107        uint32_t newCpsr =
108            cpsrWriteByInstr(Cpsr | CondCodes, imm, byteMask, false, sctlr.nmfi);
109        Cpsr = ~CondCodesMask & newCpsr;
110        CondCodes = CondCodesMask & newCpsr;
111    '''
112    msrCpsrImmIop = InstObjParams("msr", "MsrCpsrImm", "MsrImmOp",
113                                  { "code": msrCpsrImmCode,
114                                    "predicate_test": condPredicateTest },
115                                  ["IsSerializeAfter","IsNonSpeculative"])
116    header_output += MsrImmDeclare.subst(msrCpsrImmIop)
117    decoder_output += MsrImmConstructor.subst(msrCpsrImmIop)
118    exec_output += PredOpExecute.subst(msrCpsrImmIop)
119
120    msrSpsrImmCode = "Spsr = spsrWriteByInstr(Spsr, imm, byteMask, false);"
121    msrSpsrImmIop = InstObjParams("msr", "MsrSpsrImm", "MsrImmOp",
122                                  { "code": msrSpsrImmCode,
123                                    "predicate_test": predicateTest },
124                                  ["IsSerializeAfter","IsNonSpeculative"])
125    header_output += MsrImmDeclare.subst(msrSpsrImmIop)
126    decoder_output += MsrImmConstructor.subst(msrSpsrImmIop)
127    exec_output += PredOpExecute.subst(msrSpsrImmIop)
128
129    revCode = '''
130    uint32_t val = Op1;
131    Dest = swap_byte(val);
132    '''
133    revIop = InstObjParams("rev", "Rev", "RegRegOp",
134                           { "code": revCode,
135                             "predicate_test": predicateTest }, [])
136    header_output += RegRegOpDeclare.subst(revIop)
137    decoder_output += RegRegOpConstructor.subst(revIop)
138    exec_output += PredOpExecute.subst(revIop)
139
140    rev16Code = '''
141    uint32_t val = Op1;
142    Dest = (bits(val, 15, 8) << 0) |
143           (bits(val, 7, 0) << 8) |
144           (bits(val, 31, 24) << 16) |
145           (bits(val, 23, 16) << 24);
146    '''
147    rev16Iop = InstObjParams("rev16", "Rev16", "RegRegOp",
148                             { "code": rev16Code,
149                               "predicate_test": predicateTest }, [])
150    header_output += RegRegOpDeclare.subst(rev16Iop)
151    decoder_output += RegRegOpConstructor.subst(rev16Iop)
152    exec_output += PredOpExecute.subst(rev16Iop)
153
154    revshCode = '''
155    uint16_t val = Op1;
156    Dest = sext<16>(swap_byte(val));
157    '''
158    revshIop = InstObjParams("revsh", "Revsh", "RegRegOp",
159                             { "code": revshCode,
160                               "predicate_test": predicateTest }, [])
161    header_output += RegRegOpDeclare.subst(revshIop)
162    decoder_output += RegRegOpConstructor.subst(revshIop)
163    exec_output += PredOpExecute.subst(revshIop)
164
165    rbitCode = '''
166    uint8_t *opBytes = (uint8_t *)&Op1;
167    uint32_t resTemp;
168    uint8_t *destBytes = (uint8_t *)&resTemp;
169    // This reverses the bytes and bits of the input, or so says the
170    // internet.
171    for (int i = 0; i < 4; i++) {
172        uint32_t temp = opBytes[i];
173        temp = (temp * 0x0802 & 0x22110) | (temp * 0x8020 & 0x88440);
174        destBytes[3 - i] = (temp * 0x10101) >> 16;
175    }
176    Dest = resTemp;
177    '''
178    rbitIop = InstObjParams("rbit", "Rbit", "RegRegOp",
179                            { "code": rbitCode,
180                              "predicate_test": predicateTest }, [])
181    header_output += RegRegOpDeclare.subst(rbitIop)
182    decoder_output += RegRegOpConstructor.subst(rbitIop)
183    exec_output += PredOpExecute.subst(rbitIop)
184
185    clzCode = '''
186        Dest = (Op1 == 0) ? 32 : (31 - findMsbSet(Op1));
187    '''
188    clzIop = InstObjParams("clz", "Clz", "RegRegOp",
189                           { "code": clzCode,
190                             "predicate_test": predicateTest }, [])
191    header_output += RegRegOpDeclare.subst(clzIop)
192    decoder_output += RegRegOpConstructor.subst(clzIop)
193    exec_output += PredOpExecute.subst(clzIop)
194
195    ssatCode = '''
196        int32_t operand = shift_rm_imm(Op1, shiftAmt, shiftType, 0);
197        int32_t res;
198        if (satInt(res, operand, imm))
199            CondCodes = CondCodes | (1 << 27);
200        else
201            CondCodes = CondCodes;
202        Dest = res;
203    '''
204    ssatIop = InstObjParams("ssat", "Ssat", "RegImmRegShiftOp",
205                            { "code": ssatCode,
206                              "predicate_test": condPredicateTest }, [])
207    header_output += RegImmRegShiftOpDeclare.subst(ssatIop)
208    decoder_output += RegImmRegShiftOpConstructor.subst(ssatIop)
209    exec_output += PredOpExecute.subst(ssatIop)
210
211    usatCode = '''
212        int32_t operand = shift_rm_imm(Op1, shiftAmt, shiftType, 0);
213        int32_t res;
214        if (uSatInt(res, operand, imm))
215            CondCodes = CondCodes | (1 << 27);
216        else
217            CondCodes = CondCodes;
218        Dest = res;
219    '''
220    usatIop = InstObjParams("usat", "Usat", "RegImmRegShiftOp",
221                            { "code": usatCode,
222                              "predicate_test": condPredicateTest }, [])
223    header_output += RegImmRegShiftOpDeclare.subst(usatIop)
224    decoder_output += RegImmRegShiftOpConstructor.subst(usatIop)
225    exec_output += PredOpExecute.subst(usatIop)
226
227    ssat16Code = '''
228        int32_t res;
229        uint32_t resTemp = 0;
230        CondCodes = CondCodes;
231        int32_t argLow = sext<16>(bits(Op1, 15, 0));
232        int32_t argHigh = sext<16>(bits(Op1, 31, 16));
233        if (satInt(res, argLow, imm))
234            CondCodes = CondCodes | (1 << 27);
235        replaceBits(resTemp, 15, 0, res);
236        if (satInt(res, argHigh, imm))
237            CondCodes = CondCodes | (1 << 27);
238        replaceBits(resTemp, 31, 16, res);
239        Dest = resTemp;
240    '''
241    ssat16Iop = InstObjParams("ssat16", "Ssat16", "RegImmRegOp",
242                              { "code": ssat16Code,
243                                "predicate_test": condPredicateTest }, [])
244    header_output += RegImmRegOpDeclare.subst(ssat16Iop)
245    decoder_output += RegImmRegOpConstructor.subst(ssat16Iop)
246    exec_output += PredOpExecute.subst(ssat16Iop)
247
248    usat16Code = '''
249        int32_t res;
250        uint32_t resTemp = 0;
251        CondCodes = CondCodes;
252        int32_t argLow = sext<16>(bits(Op1, 15, 0));
253        int32_t argHigh = sext<16>(bits(Op1, 31, 16));
254        if (uSatInt(res, argLow, imm))
255            CondCodes = CondCodes | (1 << 27);
256        replaceBits(resTemp, 15, 0, res);
257        if (uSatInt(res, argHigh, imm))
258            CondCodes = CondCodes | (1 << 27);
259        replaceBits(resTemp, 31, 16, res);
260        Dest = resTemp;
261    '''
262    usat16Iop = InstObjParams("usat16", "Usat16", "RegImmRegOp",
263                              { "code": usat16Code,
264                                "predicate_test": condPredicateTest }, [])
265    header_output += RegImmRegOpDeclare.subst(usat16Iop)
266    decoder_output += RegImmRegOpConstructor.subst(usat16Iop)
267    exec_output += PredOpExecute.subst(usat16Iop)
268
269    sxtbIop = InstObjParams("sxtb", "Sxtb", "RegImmRegOp",
270                            { "code":
271                              "Dest = sext<8>((uint8_t)(Op1.ud >> imm));",
272                              "predicate_test": predicateTest }, [])
273    header_output += RegImmRegOpDeclare.subst(sxtbIop)
274    decoder_output += RegImmRegOpConstructor.subst(sxtbIop)
275    exec_output += PredOpExecute.subst(sxtbIop)
276
277    sxtabIop = InstObjParams("sxtab", "Sxtab", "RegRegRegImmOp",
278                             { "code":
279                               '''
280                                   Dest = sext<8>((uint8_t)(Op2.ud >> imm)) +
281                                          Op1;
282                               ''',
283                               "predicate_test": predicateTest }, [])
284    header_output += RegRegRegImmOpDeclare.subst(sxtabIop)
285    decoder_output += RegRegRegImmOpConstructor.subst(sxtabIop)
286    exec_output += PredOpExecute.subst(sxtabIop)
287
288    sxtb16Code = '''
289    uint32_t resTemp = 0;
290    replaceBits(resTemp, 15, 0, sext<8>(bits(Op1, imm + 7, imm)));
291    replaceBits(resTemp, 31, 16,
292                sext<8>(bits(Op1, (imm + 23) % 32, (imm + 16) % 32)));
293    Dest = resTemp;
294    '''
295    sxtb16Iop = InstObjParams("sxtb16", "Sxtb16", "RegImmRegOp",
296                              { "code": sxtb16Code,
297                                "predicate_test": predicateTest }, [])
298    header_output += RegImmRegOpDeclare.subst(sxtb16Iop)
299    decoder_output += RegImmRegOpConstructor.subst(sxtb16Iop)
300    exec_output += PredOpExecute.subst(sxtb16Iop)
301
302    sxtab16Code = '''
303    uint32_t resTemp = 0;
304    replaceBits(resTemp, 15, 0, sext<8>(bits(Op2, imm + 7, imm)) +
305                                        bits(Op1, 15, 0));
306    replaceBits(resTemp, 31, 16,
307                sext<8>(bits(Op2, (imm + 23) % 32, (imm + 16) % 32)) +
308                bits(Op1, 31, 16));
309    Dest = resTemp;
310    '''
311    sxtab16Iop = InstObjParams("sxtab16", "Sxtab16", "RegRegRegImmOp",
312                               { "code": sxtab16Code,
313                                 "predicate_test": predicateTest }, [])
314    header_output += RegRegRegImmOpDeclare.subst(sxtab16Iop)
315    decoder_output += RegRegRegImmOpConstructor.subst(sxtab16Iop)
316    exec_output += PredOpExecute.subst(sxtab16Iop)
317
318    sxthCode = '''
319    uint64_t rotated = (uint32_t)Op1;
320    rotated = (rotated | (rotated << 32)) >> imm;
321    Dest = sext<16>((uint16_t)rotated);
322    '''
323    sxthIop = InstObjParams("sxth", "Sxth", "RegImmRegOp",
324                              { "code": sxthCode,
325                                "predicate_test": predicateTest }, [])
326    header_output += RegImmRegOpDeclare.subst(sxthIop)
327    decoder_output += RegImmRegOpConstructor.subst(sxthIop)
328    exec_output += PredOpExecute.subst(sxthIop)
329
330    sxtahCode = '''
331    uint64_t rotated = (uint32_t)Op2;
332    rotated = (rotated | (rotated << 32)) >> imm;
333    Dest = sext<16>((uint16_t)rotated) + Op1;
334    '''
335    sxtahIop = InstObjParams("sxtah", "Sxtah", "RegRegRegImmOp",
336                             { "code": sxtahCode,
337                               "predicate_test": predicateTest }, [])
338    header_output += RegRegRegImmOpDeclare.subst(sxtahIop)
339    decoder_output += RegRegRegImmOpConstructor.subst(sxtahIop)
340    exec_output += PredOpExecute.subst(sxtahIop)
341
342    uxtbIop = InstObjParams("uxtb", "Uxtb", "RegImmRegOp",
343                            { "code": "Dest = (uint8_t)(Op1.ud >> imm);",
344                              "predicate_test": predicateTest }, [])
345    header_output += RegImmRegOpDeclare.subst(uxtbIop)
346    decoder_output += RegImmRegOpConstructor.subst(uxtbIop)
347    exec_output += PredOpExecute.subst(uxtbIop)
348
349    uxtabIop = InstObjParams("uxtab", "Uxtab", "RegRegRegImmOp",
350                             { "code":
351                               "Dest = (uint8_t)(Op2.ud >> imm) + Op1;",
352                               "predicate_test": predicateTest }, [])
353    header_output += RegRegRegImmOpDeclare.subst(uxtabIop)
354    decoder_output += RegRegRegImmOpConstructor.subst(uxtabIop)
355    exec_output += PredOpExecute.subst(uxtabIop)
356
357    uxtb16Code = '''
358    uint32_t resTemp = 0;
359    replaceBits(resTemp, 15, 0, (uint8_t)(bits(Op1, imm + 7, imm)));
360    replaceBits(resTemp, 31, 16,
361                (uint8_t)(bits(Op1, (imm + 23) % 32, (imm + 16) % 32)));
362    Dest = resTemp;
363    '''
364    uxtb16Iop = InstObjParams("uxtb16", "Uxtb16", "RegImmRegOp",
365                              { "code": uxtb16Code,
366                                "predicate_test": predicateTest }, [])
367    header_output += RegImmRegOpDeclare.subst(uxtb16Iop)
368    decoder_output += RegImmRegOpConstructor.subst(uxtb16Iop)
369    exec_output += PredOpExecute.subst(uxtb16Iop)
370
371    uxtab16Code = '''
372    uint32_t resTemp = 0;
373    replaceBits(resTemp, 15, 0, (uint8_t)(bits(Op2, imm + 7, imm)) +
374                                        bits(Op1, 15, 0));
375    replaceBits(resTemp, 31, 16,
376                (uint8_t)(bits(Op2, (imm + 23) % 32, (imm + 16) % 32)) +
377                bits(Op1, 31, 16));
378    Dest = resTemp;
379    '''
380    uxtab16Iop = InstObjParams("uxtab16", "Uxtab16", "RegRegRegImmOp",
381                               { "code": uxtab16Code,
382                                 "predicate_test": predicateTest }, [])
383    header_output += RegRegRegImmOpDeclare.subst(uxtab16Iop)
384    decoder_output += RegRegRegImmOpConstructor.subst(uxtab16Iop)
385    exec_output += PredOpExecute.subst(uxtab16Iop)
386
387    uxthCode = '''
388    uint64_t rotated = (uint32_t)Op1;
389    rotated = (rotated | (rotated << 32)) >> imm;
390    Dest = (uint16_t)rotated;
391    '''
392    uxthIop = InstObjParams("uxth", "Uxth", "RegImmRegOp",
393                              { "code": uxthCode,
394                                "predicate_test": predicateTest }, [])
395    header_output += RegImmRegOpDeclare.subst(uxthIop)
396    decoder_output += RegImmRegOpConstructor.subst(uxthIop)
397    exec_output += PredOpExecute.subst(uxthIop)
398
399    uxtahCode = '''
400    uint64_t rotated = (uint32_t)Op2;
401    rotated = (rotated | (rotated << 32)) >> imm;
402    Dest = (uint16_t)rotated + Op1;
403    '''
404    uxtahIop = InstObjParams("uxtah", "Uxtah", "RegRegRegImmOp",
405                             { "code": uxtahCode,
406                               "predicate_test": predicateTest }, [])
407    header_output += RegRegRegImmOpDeclare.subst(uxtahIop)
408    decoder_output += RegRegRegImmOpConstructor.subst(uxtahIop)
409    exec_output += PredOpExecute.subst(uxtahIop)
410
411    selCode = '''
412        uint32_t resTemp = 0;
413        for (unsigned i = 0; i < 4; i++) {
414            int low = i * 8;
415            int high = low + 7;
416            replaceBits(resTemp, high, low,
417                        bits(CondCodes, 16 + i) ?
418                            bits(Op1, high, low) : bits(Op2, high, low));
419        }
420        Dest = resTemp;
421    '''
422    selIop = InstObjParams("sel", "Sel", "RegRegRegOp",
423                           { "code": selCode,
424                             "predicate_test": condPredicateTest }, [])
425    header_output += RegRegRegOpDeclare.subst(selIop)
426    decoder_output += RegRegRegOpConstructor.subst(selIop)
427    exec_output += PredOpExecute.subst(selIop)
428
429    usad8Code = '''
430        uint32_t resTemp = 0;
431        for (unsigned i = 0; i < 4; i++) {
432            int low = i * 8;
433            int high = low + 7;
434            int32_t diff = bits(Op1, high, low) -
435                           bits(Op2, high, low);
436            resTemp += ((diff < 0) ? -diff : diff);
437        }
438        Dest = resTemp;
439    '''
440    usad8Iop = InstObjParams("usad8", "Usad8", "RegRegRegOp",
441                             { "code": usad8Code,
442                               "predicate_test": predicateTest }, [])
443    header_output += RegRegRegOpDeclare.subst(usad8Iop)
444    decoder_output += RegRegRegOpConstructor.subst(usad8Iop)
445    exec_output += PredOpExecute.subst(usad8Iop)
446
447    usada8Code = '''
448        uint32_t resTemp = 0;
449        for (unsigned i = 0; i < 4; i++) {
450            int low = i * 8;
451            int high = low + 7;
452            int32_t diff = bits(Op1, high, low) -
453                           bits(Op2, high, low);
454            resTemp += ((diff < 0) ? -diff : diff);
455        }
456        Dest = Op3 + resTemp;
457    '''
458    usada8Iop = InstObjParams("usada8", "Usada8", "RegRegRegRegOp",
459                              { "code": usada8Code,
460                                "predicate_test": predicateTest }, [])
461    header_output += RegRegRegRegOpDeclare.subst(usada8Iop)
462    decoder_output += RegRegRegRegOpConstructor.subst(usada8Iop)
463    exec_output += PredOpExecute.subst(usada8Iop)
464
465    bkptCode = 'return new PrefetchAbort(PC, ArmFault::DebugEvent);\n'
466    bkptIop = InstObjParams("bkpt", "BkptInst", "PredOp", bkptCode)
467    header_output += BasicDeclare.subst(bkptIop)
468    decoder_output += BasicConstructor.subst(bkptIop)
469    exec_output += BasicExecute.subst(bkptIop)
470
471    nopIop = InstObjParams("nop", "NopInst", "PredOp", \
472            { "code" : "", "predicate_test" : predicateTest },
473            ['IsNop'])
474    header_output += BasicDeclare.subst(nopIop)
475    decoder_output += BasicConstructor.subst(nopIop)
476    exec_output += PredOpExecute.subst(nopIop)
477
478    yieldIop = InstObjParams("yield", "YieldInst", "PredOp", \
479            { "code" : "", "predicate_test" : predicateTest })
480    header_output += BasicDeclare.subst(yieldIop)
481    decoder_output += BasicConstructor.subst(yieldIop)
482    exec_output += PredOpExecute.subst(yieldIop)
483
484    wfeCode = '''
485#if FULL_SYSTEM
486    if (SevMailbox) {
487        SevMailbox = 0;
488        PseudoInst::quiesceSkip(xc->tcBase());
489    }
490    else {
491        PseudoInst::quiesce(xc->tcBase());
492    }
493#endif
494    '''
495    wfeIop = InstObjParams("wfe", "WfeInst", "PredOp", \
496            { "code" : wfeCode, "predicate_test" : predicateTest },
497            ["IsNonSpeculative", "IsQuiesce", "IsSerializeAfter"])
498    header_output += BasicDeclare.subst(wfeIop)
499    decoder_output += BasicConstructor.subst(wfeIop)
500    exec_output += QuiescePredOpExecute.subst(wfeIop)
501
502    wfiCode = '''
503#if FULL_SYSTEM
504    PseudoInst::quiesce(xc->tcBase());
505#endif
506    '''
507    wfiIop = InstObjParams("wfi", "WfiInst", "PredOp", \
508            { "code" : wfiCode, "predicate_test" : predicateTest },
509            ["IsNonSpeculative", "IsQuiesce", "IsSerializeAfter"])
510    header_output += BasicDeclare.subst(wfiIop)
511    decoder_output += BasicConstructor.subst(wfiIop)
512    exec_output += QuiescePredOpExecute.subst(wfiIop)
513
514    sevCode = '''
515    // Need a way for O3 to not scoreboard these accesses as pipe flushes.
516    SevMailbox = 1;
517    System *sys = xc->tcBase()->getSystemPtr();
518    for (int x = 0; x < sys->numContexts(); x++) {
519        ThreadContext *oc = sys->getThreadContext(x);
520        if (oc != xc->tcBase()) {
521            oc->setMiscReg(MISCREG_SEV_MAILBOX, 1);
522        }
523    }
524    '''
525    sevIop = InstObjParams("sev", "SevInst", "PredOp", \
526            { "code" : sevCode, "predicate_test" : predicateTest },
527            ["IsNonSpeculative", "IsSquashAfter"])
528    header_output += BasicDeclare.subst(sevIop)
529    decoder_output += BasicConstructor.subst(sevIop)
530    exec_output += PredOpExecute.subst(sevIop)
531
532    itIop = InstObjParams("it", "ItInst", "PredOp", \
533            { "code" : ";",
534              "predicate_test" : predicateTest },
535            ["IsNonSpeculative", "IsSerializeAfter"])
536    header_output += BasicDeclare.subst(itIop)
537    decoder_output += BasicConstructor.subst(itIop)
538    exec_output += PredOpExecute.subst(itIop)
539    unknownCode = '''
540#if FULL_SYSTEM
541            return new UndefinedInstruction;
542#else
543            return new UndefinedInstruction(machInst, true);
544#endif
545    '''
546    unknownIop = InstObjParams("unknown", "Unknown", "UnknownOp", \
547                               { "code": unknownCode,
548                                 "predicate_test": predicateTest })
549    header_output += BasicDeclare.subst(unknownIop)
550    decoder_output += BasicConstructor.subst(unknownIop)
551    exec_output += PredOpExecute.subst(unknownIop)
552
553    ubfxCode = '''
554        Dest = bits(Op1, imm2, imm1);
555    '''
556    ubfxIop = InstObjParams("ubfx", "Ubfx", "RegRegImmImmOp",
557                            { "code": ubfxCode,
558                              "predicate_test": predicateTest }, [])
559    header_output += RegRegImmImmOpDeclare.subst(ubfxIop)
560    decoder_output += RegRegImmImmOpConstructor.subst(ubfxIop)
561    exec_output += PredOpExecute.subst(ubfxIop)
562
563    sbfxCode = '''
564        int32_t resTemp = bits(Op1, imm2, imm1);
565        Dest = resTemp | -(resTemp & (1 << (imm2 - imm1)));
566    '''
567    sbfxIop = InstObjParams("sbfx", "Sbfx", "RegRegImmImmOp",
568                            { "code": sbfxCode,
569                              "predicate_test": predicateTest }, [])
570    header_output += RegRegImmImmOpDeclare.subst(sbfxIop)
571    decoder_output += RegRegImmImmOpConstructor.subst(sbfxIop)
572    exec_output += PredOpExecute.subst(sbfxIop)
573
574    bfcCode = '''
575        Dest = Op1 & ~(mask(imm2 - imm1 + 1) << imm1);
576    '''
577    bfcIop = InstObjParams("bfc", "Bfc", "RegRegImmImmOp",
578                           { "code": bfcCode,
579                             "predicate_test": predicateTest }, [])
580    header_output += RegRegImmImmOpDeclare.subst(bfcIop)
581    decoder_output += RegRegImmImmOpConstructor.subst(bfcIop)
582    exec_output += PredOpExecute.subst(bfcIop)
583
584    bfiCode = '''
585        uint32_t bitMask = (mask(imm2 - imm1 + 1) << imm1);
586        Dest = ((Op1 << imm1) & bitMask) | (Dest & ~bitMask);
587    '''
588    bfiIop = InstObjParams("bfi", "Bfi", "RegRegImmImmOp",
589                           { "code": bfiCode,
590                             "predicate_test": predicateTest }, [])
591    header_output += RegRegImmImmOpDeclare.subst(bfiIop)
592    decoder_output += RegRegImmImmOpConstructor.subst(bfiIop)
593    exec_output += PredOpExecute.subst(bfiIop)
594
595    mrc15code = '''
596    CPSR cpsr = Cpsr;
597    if (cpsr.mode == MODE_USER)
598#if FULL_SYSTEM
599        return new UndefinedInstruction;
600#else
601        return new UndefinedInstruction(false, mnemonic);
602#endif
603    Dest = MiscOp1;
604    '''
605
606    mrc15Iop = InstObjParams("mrc", "Mrc15", "RegRegOp",
607                             { "code": mrc15code,
608                               "predicate_test": predicateTest }, [])
609    header_output += RegRegOpDeclare.subst(mrc15Iop)
610    decoder_output += RegRegOpConstructor.subst(mrc15Iop)
611    exec_output += PredOpExecute.subst(mrc15Iop)
612
613
614    mcr15code = '''
615    CPSR cpsr = Cpsr;
616    if (cpsr.mode == MODE_USER)
617#if FULL_SYSTEM
618        return new UndefinedInstruction;
619#else
620        return new UndefinedInstruction(false, mnemonic);
621#endif
622    MiscDest = Op1;
623    '''
624    mcr15Iop = InstObjParams("mcr", "Mcr15", "RegRegOp",
625                             { "code": mcr15code,
626                               "predicate_test": predicateTest },
627                               ["IsSerializeAfter","IsNonSpeculative"])
628    header_output += RegRegOpDeclare.subst(mcr15Iop)
629    decoder_output += RegRegOpConstructor.subst(mcr15Iop)
630    exec_output += PredOpExecute.subst(mcr15Iop)
631
632    mrc15UserIop = InstObjParams("mrc", "Mrc15User", "RegRegOp",
633                                 { "code": "Dest = MiscOp1;",
634                                   "predicate_test": predicateTest }, [])
635    header_output += RegRegOpDeclare.subst(mrc15UserIop)
636    decoder_output += RegRegOpConstructor.subst(mrc15UserIop)
637    exec_output += PredOpExecute.subst(mrc15UserIop)
638
639    mcr15UserIop = InstObjParams("mcr", "Mcr15User", "RegRegOp",
640                                 { "code": "MiscDest = Op1",
641                                   "predicate_test": predicateTest },
642                                   ["IsSerializeAfter","IsNonSpeculative"])
643    header_output += RegRegOpDeclare.subst(mcr15UserIop)
644    decoder_output += RegRegOpConstructor.subst(mcr15UserIop)
645    exec_output += PredOpExecute.subst(mcr15UserIop)
646
647    enterxCode = '''
648        NextThumb = true;
649        NextJazelle = true;
650    '''
651    enterxIop = InstObjParams("enterx", "Enterx", "PredOp",
652                              { "code": enterxCode,
653                                "predicate_test": predicateTest }, [])
654    header_output += BasicDeclare.subst(enterxIop)
655    decoder_output += BasicConstructor.subst(enterxIop)
656    exec_output += PredOpExecute.subst(enterxIop)
657
658    leavexCode = '''
659        NextThumb = true;
660        NextJazelle = false;
661    '''
662    leavexIop = InstObjParams("leavex", "Leavex", "PredOp",
663                              { "code": leavexCode,
664                                "predicate_test": predicateTest }, [])
665    header_output += BasicDeclare.subst(leavexIop)
666    decoder_output += BasicConstructor.subst(leavexIop)
667    exec_output += PredOpExecute.subst(leavexIop)
668
669    setendCode = '''
670        CPSR cpsr = Cpsr;
671        cpsr.e = imm;
672        Cpsr = cpsr;
673    '''
674    setendIop = InstObjParams("setend", "Setend", "ImmOp",
675                              { "code": setendCode,
676                                "predicate_test": predicateTest },
677                              ["IsSerializeAfter","IsNonSpeculative"])
678    header_output += ImmOpDeclare.subst(setendIop)
679    decoder_output += ImmOpConstructor.subst(setendIop)
680    exec_output += PredOpExecute.subst(setendIop)
681
682    clrexCode = '''
683        unsigned memAccessFlags = Request::CLEAR_LL |
684            ArmISA::TLB::AlignWord | Request::LLSC;
685        fault = xc->read(0, (uint32_t&)Mem, memAccessFlags);
686    '''
687    clrexIop = InstObjParams("clrex", "Clrex","PredOp",
688                             { "code": clrexCode,
689                               "predicate_test": predicateTest },[])
690    header_output += ClrexDeclare.subst(clrexIop)
691    decoder_output += BasicConstructor.subst(clrexIop)
692    exec_output += PredOpExecute.subst(clrexIop)
693    exec_output += ClrexInitiateAcc.subst(clrexIop)
694    exec_output += ClrexCompleteAcc.subst(clrexIop)
695
696    isbCode = '''
697        fault = new FlushPipe;
698    '''
699    isbIop = InstObjParams("isb", "Isb", "PredOp",
700                             {"code": isbCode,
701                               "predicate_test": predicateTest},
702                                ['IsSerializeAfter'])
703    header_output += BasicDeclare.subst(isbIop)
704    decoder_output += BasicConstructor.subst(isbIop)
705    exec_output += PredOpExecute.subst(isbIop)
706
707    dsbCode = '''
708        fault = new FlushPipe;
709    '''
710    dsbIop = InstObjParams("dsb", "Dsb", "PredOp",
711                             {"code": dsbCode,
712                               "predicate_test": predicateTest},
713                              ['IsMemBarrier', 'IsSerializeAfter'])
714    header_output += BasicDeclare.subst(dsbIop)
715    decoder_output += BasicConstructor.subst(dsbIop)
716    exec_output += PredOpExecute.subst(dsbIop)
717
718    dmbCode = '''
719    '''
720    dmbIop = InstObjParams("dmb", "Dmb", "PredOp",
721                             {"code": dmbCode,
722                               "predicate_test": predicateTest},
723                               ['IsMemBarrier'])
724    header_output += BasicDeclare.subst(dmbIop)
725    decoder_output += BasicConstructor.subst(dmbIop)
726    exec_output += PredOpExecute.subst(dmbIop)
727
728    dbgCode = '''
729    '''
730    dbgIop = InstObjParams("dbg", "Dbg", "PredOp",
731                             {"code": dbgCode,
732                               "predicate_test": predicateTest})
733    header_output += BasicDeclare.subst(dbgIop)
734    decoder_output += BasicConstructor.subst(dbgIop)
735    exec_output += PredOpExecute.subst(dbgIop)
736
737    cpsCode = '''
738    uint32_t mode = bits(imm, 4, 0);
739    uint32_t f = bits(imm, 5);
740    uint32_t i = bits(imm, 6);
741    uint32_t a = bits(imm, 7);
742    bool setMode = bits(imm, 8);
743    bool enable = bits(imm, 9);
744    CPSR cpsr = Cpsr;
745    SCTLR sctlr = Sctlr;
746    if (cpsr.mode != MODE_USER) {
747        if (enable) {
748            if (f) cpsr.f = 0;
749            if (i) cpsr.i = 0;
750            if (a) cpsr.a = 0;
751        } else {
752            if (f && !sctlr.nmfi) cpsr.f = 1;
753            if (i) cpsr.i = 1;
754            if (a) cpsr.a = 1;
755        }
756        if (setMode) {
757            cpsr.mode = mode;
758        }
759    }
760    Cpsr = cpsr;
761    '''
762    cpsIop = InstObjParams("cps", "Cps", "ImmOp",
763                           { "code": cpsCode,
764                             "predicate_test": predicateTest },
765                           ["IsSerializeAfter","IsNonSpeculative"])
766    header_output += ImmOpDeclare.subst(cpsIop)
767    decoder_output += ImmOpConstructor.subst(cpsIop)
768    exec_output += PredOpExecute.subst(cpsIop)
769}};
770