misc.isa revision 8908 
1// -*- mode:c++ -*-
2
3// Copyright (c) 2010-2012 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 (FullSystem) {
44        fault = new SupervisorCall;
45    } else {
46        fault = new SupervisorCall(machInst);
47    }
48    '''
49
50    svcIop = InstObjParams("svc", "Svc", "PredOp",
51                           { "code": svcCode,
52                             "predicate_test": predicateTest },
53                           ["IsSyscall", "IsNonSpeculative", "IsSerializeAfter"])
54    header_output = BasicDeclare.subst(svcIop)
55    decoder_output = BasicConstructor.subst(svcIop)
56    exec_output = PredOpExecute.subst(svcIop)
57
58}};
59
60let {{
61
62    header_output = decoder_output = exec_output = ""
63
64    mrsCpsrCode = '''
65        CPSR cpsr = Cpsr;
66        cpsr.nz = CondCodesNZ;
67        cpsr.c = CondCodesC;
68        cpsr.v = CondCodesV;
69        cpsr.ge = CondCodesGE;
70        Dest = cpsr & 0xF8FF03DF
71    '''
72
73    mrsCpsrIop = InstObjParams("mrs", "MrsCpsr", "MrsOp",
74                               { "code": mrsCpsrCode,
75                                 "predicate_test": condPredicateTest },
76                               ["IsSerializeBefore"])
77    header_output += MrsDeclare.subst(mrsCpsrIop)
78    decoder_output += MrsConstructor.subst(mrsCpsrIop)
79    exec_output += PredOpExecute.subst(mrsCpsrIop)
80
81    mrsSpsrCode = "Dest = Spsr"
82    mrsSpsrIop = InstObjParams("mrs", "MrsSpsr", "MrsOp",
83                               { "code": mrsSpsrCode,
84                                 "predicate_test": predicateTest },
85                               ["IsSerializeBefore"])
86    header_output += MrsDeclare.subst(mrsSpsrIop)
87    decoder_output += MrsConstructor.subst(mrsSpsrIop)
88    exec_output += PredOpExecute.subst(mrsSpsrIop)
89
90    msrCpsrRegCode = '''
91        SCTLR sctlr = Sctlr;
92        CPSR old_cpsr = Cpsr;
93        old_cpsr.nz = CondCodesNZ;
94        old_cpsr.c = CondCodesC;
95        old_cpsr.v = CondCodesV;
96        old_cpsr.ge = CondCodesGE;
97
98        CPSR new_cpsr =
99            cpsrWriteByInstr(old_cpsr, Op1, byteMask, false, sctlr.nmfi);
100        Cpsr = ~CondCodesMask & new_cpsr;
101        CondCodesNZ = new_cpsr.nz;
102        CondCodesC = new_cpsr.c;
103        CondCodesV = new_cpsr.v;
104        CondCodesGE = new_cpsr.ge;
105    '''
106    msrCpsrRegIop = InstObjParams("msr", "MsrCpsrReg", "MsrRegOp",
107                                  { "code": msrCpsrRegCode,
108                                    "predicate_test": condPredicateTest },
109                                  ["IsSerializeAfter","IsNonSpeculative"])
110    header_output += MsrRegDeclare.subst(msrCpsrRegIop)
111    decoder_output += MsrRegConstructor.subst(msrCpsrRegIop)
112    exec_output += PredOpExecute.subst(msrCpsrRegIop)
113
114    msrSpsrRegCode = "Spsr = spsrWriteByInstr(Spsr, Op1, byteMask, false);"
115    msrSpsrRegIop = InstObjParams("msr", "MsrSpsrReg", "MsrRegOp",
116                                  { "code": msrSpsrRegCode,
117                                    "predicate_test": predicateTest },
118                                  ["IsSerializeAfter","IsNonSpeculative"])
119    header_output += MsrRegDeclare.subst(msrSpsrRegIop)
120    decoder_output += MsrRegConstructor.subst(msrSpsrRegIop)
121    exec_output += PredOpExecute.subst(msrSpsrRegIop)
122
123    msrCpsrImmCode = '''
124        SCTLR sctlr = Sctlr;
125        CPSR old_cpsr = Cpsr;
126        old_cpsr.nz = CondCodesNZ;
127        old_cpsr.c = CondCodesC;
128        old_cpsr.v = CondCodesV;
129        old_cpsr.ge = CondCodesGE;
130        CPSR new_cpsr =
131            cpsrWriteByInstr(old_cpsr, imm, byteMask, false, sctlr.nmfi);
132        Cpsr = ~CondCodesMask & new_cpsr;
133        CondCodesNZ = new_cpsr.nz;
134        CondCodesC = new_cpsr.c;
135        CondCodesV = new_cpsr.v;
136        CondCodesGE = new_cpsr.ge;
137    '''
138    msrCpsrImmIop = InstObjParams("msr", "MsrCpsrImm", "MsrImmOp",
139                                  { "code": msrCpsrImmCode,
140                                    "predicate_test": condPredicateTest },
141                                  ["IsSerializeAfter","IsNonSpeculative"])
142    header_output += MsrImmDeclare.subst(msrCpsrImmIop)
143    decoder_output += MsrImmConstructor.subst(msrCpsrImmIop)
144    exec_output += PredOpExecute.subst(msrCpsrImmIop)
145
146    msrSpsrImmCode = "Spsr = spsrWriteByInstr(Spsr, imm, byteMask, false);"
147    msrSpsrImmIop = InstObjParams("msr", "MsrSpsrImm", "MsrImmOp",
148                                  { "code": msrSpsrImmCode,
149                                    "predicate_test": predicateTest },
150                                  ["IsSerializeAfter","IsNonSpeculative"])
151    header_output += MsrImmDeclare.subst(msrSpsrImmIop)
152    decoder_output += MsrImmConstructor.subst(msrSpsrImmIop)
153    exec_output += PredOpExecute.subst(msrSpsrImmIop)
154
155    revCode = '''
156    uint32_t val = Op1;
157    Dest = swap_byte(val);
158    '''
159    revIop = InstObjParams("rev", "Rev", "RegRegOp",
160                           { "code": revCode,
161                             "predicate_test": predicateTest }, [])
162    header_output += RegRegOpDeclare.subst(revIop)
163    decoder_output += RegRegOpConstructor.subst(revIop)
164    exec_output += PredOpExecute.subst(revIop)
165
166    rev16Code = '''
167    uint32_t val = Op1;
168    Dest = (bits(val, 15, 8) << 0) |
169           (bits(val, 7, 0) << 8) |
170           (bits(val, 31, 24) << 16) |
171           (bits(val, 23, 16) << 24);
172    '''
173    rev16Iop = InstObjParams("rev16", "Rev16", "RegRegOp",
174                             { "code": rev16Code,
175                               "predicate_test": predicateTest }, [])
176    header_output += RegRegOpDeclare.subst(rev16Iop)
177    decoder_output += RegRegOpConstructor.subst(rev16Iop)
178    exec_output += PredOpExecute.subst(rev16Iop)
179
180    revshCode = '''
181    uint16_t val = Op1;
182    Dest = sext<16>(swap_byte(val));
183    '''
184    revshIop = InstObjParams("revsh", "Revsh", "RegRegOp",
185                             { "code": revshCode,
186                               "predicate_test": predicateTest }, [])
187    header_output += RegRegOpDeclare.subst(revshIop)
188    decoder_output += RegRegOpConstructor.subst(revshIop)
189    exec_output += PredOpExecute.subst(revshIop)
190
191    rbitCode = '''
192    uint8_t *opBytes = (uint8_t *)&Op1;
193    uint32_t resTemp;
194    uint8_t *destBytes = (uint8_t *)&resTemp;
195    // This reverses the bytes and bits of the input, or so says the
196    // internet.
197    for (int i = 0; i < 4; i++) {
198        uint32_t temp = opBytes[i];
199        temp = (temp * 0x0802 & 0x22110) | (temp * 0x8020 & 0x88440);
200        destBytes[3 - i] = (temp * 0x10101) >> 16;
201    }
202    Dest = resTemp;
203    '''
204    rbitIop = InstObjParams("rbit", "Rbit", "RegRegOp",
205                            { "code": rbitCode,
206                              "predicate_test": predicateTest }, [])
207    header_output += RegRegOpDeclare.subst(rbitIop)
208    decoder_output += RegRegOpConstructor.subst(rbitIop)
209    exec_output += PredOpExecute.subst(rbitIop)
210
211    clzCode = '''
212        Dest = (Op1 == 0) ? 32 : (31 - findMsbSet(Op1));
213    '''
214    clzIop = InstObjParams("clz", "Clz", "RegRegOp",
215                           { "code": clzCode,
216                             "predicate_test": predicateTest }, [])
217    header_output += RegRegOpDeclare.subst(clzIop)
218    decoder_output += RegRegOpConstructor.subst(clzIop)
219    exec_output += PredOpExecute.subst(clzIop)
220
221    ssatCode = '''
222        int32_t operand = shift_rm_imm(Op1, shiftAmt, shiftType, 0);
223        int32_t res;
224        if (satInt(res, operand, imm))
225            CpsrQ = 1 << 27;
226        Dest = res;
227    '''
228    ssatIop = InstObjParams("ssat", "Ssat", "RegImmRegShiftOp",
229                            { "code": ssatCode,
230                              "predicate_test": pickPredicate(ssatCode) }, [])
231    header_output += RegImmRegShiftOpDeclare.subst(ssatIop)
232    decoder_output += RegImmRegShiftOpConstructor.subst(ssatIop)
233    exec_output += PredOpExecute.subst(ssatIop)
234
235    usatCode = '''
236        int32_t operand = shift_rm_imm(Op1, shiftAmt, shiftType, 0);
237        int32_t res;
238        if (uSatInt(res, operand, imm))
239            CpsrQ = 1 << 27;
240        Dest = res;
241    '''
242    usatIop = InstObjParams("usat", "Usat", "RegImmRegShiftOp",
243                            { "code": usatCode,
244                              "predicate_test": pickPredicate(usatCode) }, [])
245    header_output += RegImmRegShiftOpDeclare.subst(usatIop)
246    decoder_output += RegImmRegShiftOpConstructor.subst(usatIop)
247    exec_output += PredOpExecute.subst(usatIop)
248
249    ssat16Code = '''
250        int32_t res;
251        uint32_t resTemp = 0;
252        int32_t argLow = sext<16>(bits(Op1, 15, 0));
253        int32_t argHigh = sext<16>(bits(Op1, 31, 16));
254        if (satInt(res, argLow, imm))
255            CpsrQ = 1 << 27;
256        replaceBits(resTemp, 15, 0, res);
257        if (satInt(res, argHigh, imm))
258            CpsrQ = 1 << 27;
259        replaceBits(resTemp, 31, 16, res);
260        Dest = resTemp;
261    '''
262    ssat16Iop = InstObjParams("ssat16", "Ssat16", "RegImmRegOp",
263                              { "code": ssat16Code,
264                                "predicate_test": pickPredicate(ssat16Code) }, [])
265    header_output += RegImmRegOpDeclare.subst(ssat16Iop)
266    decoder_output += RegImmRegOpConstructor.subst(ssat16Iop)
267    exec_output += PredOpExecute.subst(ssat16Iop)
268
269    usat16Code = '''
270        int32_t res;
271        uint32_t resTemp = 0;
272        int32_t argLow = sext<16>(bits(Op1, 15, 0));
273        int32_t argHigh = sext<16>(bits(Op1, 31, 16));
274        if (uSatInt(res, argLow, imm))
275            CpsrQ = 1 << 27;
276        replaceBits(resTemp, 15, 0, res);
277        if (uSatInt(res, argHigh, imm))
278            CpsrQ = 1 << 27;
279        replaceBits(resTemp, 31, 16, res);
280        Dest = resTemp;
281    '''
282    usat16Iop = InstObjParams("usat16", "Usat16", "RegImmRegOp",
283                              { "code": usat16Code,
284                                "predicate_test": pickPredicate(usat16Code) }, [])
285    header_output += RegImmRegOpDeclare.subst(usat16Iop)
286    decoder_output += RegImmRegOpConstructor.subst(usat16Iop)
287    exec_output += PredOpExecute.subst(usat16Iop)
288
289    sxtbIop = InstObjParams("sxtb", "Sxtb", "RegImmRegOp",
290                            { "code":
291                              "Dest = sext<8>((uint8_t)(Op1_ud >> imm));",
292                              "predicate_test": predicateTest }, [])
293    header_output += RegImmRegOpDeclare.subst(sxtbIop)
294    decoder_output += RegImmRegOpConstructor.subst(sxtbIop)
295    exec_output += PredOpExecute.subst(sxtbIop)
296
297    sxtabIop = InstObjParams("sxtab", "Sxtab", "RegRegRegImmOp",
298                             { "code":
299                               '''
300                                   Dest = sext<8>((uint8_t)(Op2_ud >> imm)) +
301                                          Op1;
302                               ''',
303                               "predicate_test": predicateTest }, [])
304    header_output += RegRegRegImmOpDeclare.subst(sxtabIop)
305    decoder_output += RegRegRegImmOpConstructor.subst(sxtabIop)
306    exec_output += PredOpExecute.subst(sxtabIop)
307
308    sxtb16Code = '''
309    uint32_t resTemp = 0;
310    replaceBits(resTemp, 15, 0, sext<8>(bits(Op1, imm + 7, imm)));
311    replaceBits(resTemp, 31, 16,
312                sext<8>(bits(Op1, (imm + 23) % 32, (imm + 16) % 32)));
313    Dest = resTemp;
314    '''
315    sxtb16Iop = InstObjParams("sxtb16", "Sxtb16", "RegImmRegOp",
316                              { "code": sxtb16Code,
317                                "predicate_test": predicateTest }, [])
318    header_output += RegImmRegOpDeclare.subst(sxtb16Iop)
319    decoder_output += RegImmRegOpConstructor.subst(sxtb16Iop)
320    exec_output += PredOpExecute.subst(sxtb16Iop)
321
322    sxtab16Code = '''
323    uint32_t resTemp = 0;
324    replaceBits(resTemp, 15, 0, sext<8>(bits(Op2, imm + 7, imm)) +
325                                        bits(Op1, 15, 0));
326    replaceBits(resTemp, 31, 16,
327                sext<8>(bits(Op2, (imm + 23) % 32, (imm + 16) % 32)) +
328                bits(Op1, 31, 16));
329    Dest = resTemp;
330    '''
331    sxtab16Iop = InstObjParams("sxtab16", "Sxtab16", "RegRegRegImmOp",
332                               { "code": sxtab16Code,
333                                 "predicate_test": predicateTest }, [])
334    header_output += RegRegRegImmOpDeclare.subst(sxtab16Iop)
335    decoder_output += RegRegRegImmOpConstructor.subst(sxtab16Iop)
336    exec_output += PredOpExecute.subst(sxtab16Iop)
337
338    sxthCode = '''
339    uint64_t rotated = (uint32_t)Op1;
340    rotated = (rotated | (rotated << 32)) >> imm;
341    Dest = sext<16>((uint16_t)rotated);
342    '''
343    sxthIop = InstObjParams("sxth", "Sxth", "RegImmRegOp",
344                              { "code": sxthCode,
345                                "predicate_test": predicateTest }, [])
346    header_output += RegImmRegOpDeclare.subst(sxthIop)
347    decoder_output += RegImmRegOpConstructor.subst(sxthIop)
348    exec_output += PredOpExecute.subst(sxthIop)
349
350    sxtahCode = '''
351    uint64_t rotated = (uint32_t)Op2;
352    rotated = (rotated | (rotated << 32)) >> imm;
353    Dest = sext<16>((uint16_t)rotated) + Op1;
354    '''
355    sxtahIop = InstObjParams("sxtah", "Sxtah", "RegRegRegImmOp",
356                             { "code": sxtahCode,
357                               "predicate_test": predicateTest }, [])
358    header_output += RegRegRegImmOpDeclare.subst(sxtahIop)
359    decoder_output += RegRegRegImmOpConstructor.subst(sxtahIop)
360    exec_output += PredOpExecute.subst(sxtahIop)
361
362    uxtbIop = InstObjParams("uxtb", "Uxtb", "RegImmRegOp",
363                            { "code": "Dest = (uint8_t)(Op1_ud >> imm);",
364                              "predicate_test": predicateTest }, [])
365    header_output += RegImmRegOpDeclare.subst(uxtbIop)
366    decoder_output += RegImmRegOpConstructor.subst(uxtbIop)
367    exec_output += PredOpExecute.subst(uxtbIop)
368
369    uxtabIop = InstObjParams("uxtab", "Uxtab", "RegRegRegImmOp",
370                             { "code":
371                               "Dest = (uint8_t)(Op2_ud >> imm) + Op1;",
372                               "predicate_test": predicateTest }, [])
373    header_output += RegRegRegImmOpDeclare.subst(uxtabIop)
374    decoder_output += RegRegRegImmOpConstructor.subst(uxtabIop)
375    exec_output += PredOpExecute.subst(uxtabIop)
376
377    uxtb16Code = '''
378    uint32_t resTemp = 0;
379    replaceBits(resTemp, 15, 0, (uint8_t)(bits(Op1, imm + 7, imm)));
380    replaceBits(resTemp, 31, 16,
381                (uint8_t)(bits(Op1, (imm + 23) % 32, (imm + 16) % 32)));
382    Dest = resTemp;
383    '''
384    uxtb16Iop = InstObjParams("uxtb16", "Uxtb16", "RegImmRegOp",
385                              { "code": uxtb16Code,
386                                "predicate_test": predicateTest }, [])
387    header_output += RegImmRegOpDeclare.subst(uxtb16Iop)
388    decoder_output += RegImmRegOpConstructor.subst(uxtb16Iop)
389    exec_output += PredOpExecute.subst(uxtb16Iop)
390
391    uxtab16Code = '''
392    uint32_t resTemp = 0;
393    replaceBits(resTemp, 15, 0, (uint8_t)(bits(Op2, imm + 7, imm)) +
394                                        bits(Op1, 15, 0));
395    replaceBits(resTemp, 31, 16,
396                (uint8_t)(bits(Op2, (imm + 23) % 32, (imm + 16) % 32)) +
397                bits(Op1, 31, 16));
398    Dest = resTemp;
399    '''
400    uxtab16Iop = InstObjParams("uxtab16", "Uxtab16", "RegRegRegImmOp",
401                               { "code": uxtab16Code,
402                                 "predicate_test": predicateTest }, [])
403    header_output += RegRegRegImmOpDeclare.subst(uxtab16Iop)
404    decoder_output += RegRegRegImmOpConstructor.subst(uxtab16Iop)
405    exec_output += PredOpExecute.subst(uxtab16Iop)
406
407    uxthCode = '''
408    uint64_t rotated = (uint32_t)Op1;
409    rotated = (rotated | (rotated << 32)) >> imm;
410    Dest = (uint16_t)rotated;
411    '''
412    uxthIop = InstObjParams("uxth", "Uxth", "RegImmRegOp",
413                              { "code": uxthCode,
414                                "predicate_test": predicateTest }, [])
415    header_output += RegImmRegOpDeclare.subst(uxthIop)
416    decoder_output += RegImmRegOpConstructor.subst(uxthIop)
417    exec_output += PredOpExecute.subst(uxthIop)
418
419    uxtahCode = '''
420    uint64_t rotated = (uint32_t)Op2;
421    rotated = (rotated | (rotated << 32)) >> imm;
422    Dest = (uint16_t)rotated + Op1;
423    '''
424    uxtahIop = InstObjParams("uxtah", "Uxtah", "RegRegRegImmOp",
425                             { "code": uxtahCode,
426                               "predicate_test": predicateTest }, [])
427    header_output += RegRegRegImmOpDeclare.subst(uxtahIop)
428    decoder_output += RegRegRegImmOpConstructor.subst(uxtahIop)
429    exec_output += PredOpExecute.subst(uxtahIop)
430
431    selCode = '''
432        uint32_t resTemp = 0;
433        for (unsigned i = 0; i < 4; i++) {
434            int low = i * 8;
435            int high = low + 7;
436            replaceBits(resTemp, high, low,
437                        bits(CondCodesGE, i) ?
438                            bits(Op1, high, low) : bits(Op2, high, low));
439        }
440        Dest = resTemp;
441    '''
442    selIop = InstObjParams("sel", "Sel", "RegRegRegOp",
443                           { "code": selCode,
444                             "predicate_test": predicateTest }, [])
445    header_output += RegRegRegOpDeclare.subst(selIop)
446    decoder_output += RegRegRegOpConstructor.subst(selIop)
447    exec_output += PredOpExecute.subst(selIop)
448
449    usad8Code = '''
450        uint32_t resTemp = 0;
451        for (unsigned i = 0; i < 4; i++) {
452            int low = i * 8;
453            int high = low + 7;
454            int32_t diff = bits(Op1, high, low) -
455                           bits(Op2, high, low);
456            resTemp += ((diff < 0) ? -diff : diff);
457        }
458        Dest = resTemp;
459    '''
460    usad8Iop = InstObjParams("usad8", "Usad8", "RegRegRegOp",
461                             { "code": usad8Code,
462                               "predicate_test": predicateTest }, [])
463    header_output += RegRegRegOpDeclare.subst(usad8Iop)
464    decoder_output += RegRegRegOpConstructor.subst(usad8Iop)
465    exec_output += PredOpExecute.subst(usad8Iop)
466
467    usada8Code = '''
468        uint32_t resTemp = 0;
469        for (unsigned i = 0; i < 4; i++) {
470            int low = i * 8;
471            int high = low + 7;
472            int32_t diff = bits(Op1, high, low) -
473                           bits(Op2, high, low);
474            resTemp += ((diff < 0) ? -diff : diff);
475        }
476        Dest = Op3 + resTemp;
477    '''
478    usada8Iop = InstObjParams("usada8", "Usada8", "RegRegRegRegOp",
479                              { "code": usada8Code,
480                                "predicate_test": predicateTest }, [])
481    header_output += RegRegRegRegOpDeclare.subst(usada8Iop)
482    decoder_output += RegRegRegRegOpConstructor.subst(usada8Iop)
483    exec_output += PredOpExecute.subst(usada8Iop)
484
485    bkptCode = 'return new PrefetchAbort(PC, ArmFault::DebugEvent);\n'
486    bkptIop = InstObjParams("bkpt", "BkptInst", "PredOp", bkptCode)
487    header_output += BasicDeclare.subst(bkptIop)
488    decoder_output += BasicConstructor.subst(bkptIop)
489    exec_output += BasicExecute.subst(bkptIop)
490
491    nopIop = InstObjParams("nop", "NopInst", "PredOp", \
492            { "code" : "", "predicate_test" : predicateTest },
493            ['IsNop'])
494    header_output += BasicDeclare.subst(nopIop)
495    decoder_output += BasicConstructor.subst(nopIop)
496    exec_output += PredOpExecute.subst(nopIop)
497
498    yieldIop = InstObjParams("yield", "YieldInst", "PredOp", \
499            { "code" : "", "predicate_test" : predicateTest })
500    header_output += BasicDeclare.subst(yieldIop)
501    decoder_output += BasicConstructor.subst(yieldIop)
502    exec_output += PredOpExecute.subst(yieldIop)
503
504    wfeCode = '''
505    // WFE Sleeps if SevMailbox==0 and no unmasked interrupts are pending
506    if (SevMailbox == 1) {
507        SevMailbox = 0;
508        PseudoInst::quiesceSkip(xc->tcBase());
509    } else if (xc->tcBase()->getCpuPtr()->getInterruptController()->checkInterrupts(xc->tcBase())) {
510        PseudoInst::quiesceSkip(xc->tcBase());
511    } else {
512        PseudoInst::quiesce(xc->tcBase());
513    }
514    '''
515    wfePredFixUpCode = '''
516    // WFE is predicated false, reset SevMailbox to reduce spurious sleeps
517    // and SEV interrupts
518    SevMailbox = 1;
519    '''
520    wfeIop = InstObjParams("wfe", "WfeInst", "PredOp", \
521            { "code" : wfeCode,
522              "pred_fixup" : wfePredFixUpCode,
523              "predicate_test" : predicateTest },
524            ["IsNonSpeculative", "IsQuiesce",
525             "IsSerializeAfter", "IsUnverifiable"])
526    header_output += BasicDeclare.subst(wfeIop)
527    decoder_output += BasicConstructor.subst(wfeIop)
528    exec_output += QuiescePredOpExecuteWithFixup.subst(wfeIop)
529
530    wfiCode = '''
531    // WFI doesn't sleep if interrupts are pending (masked or not)
532    if (xc->tcBase()->getCpuPtr()->getInterruptController()->checkRaw()) {
533        PseudoInst::quiesceSkip(xc->tcBase());
534    } else {
535        PseudoInst::quiesce(xc->tcBase());
536    }
537    '''
538    wfiIop = InstObjParams("wfi", "WfiInst", "PredOp", \
539            { "code" : wfiCode, "predicate_test" : predicateTest },
540            ["IsNonSpeculative", "IsQuiesce",
541             "IsSerializeAfter", "IsUnverifiable"])
542    header_output += BasicDeclare.subst(wfiIop)
543    decoder_output += BasicConstructor.subst(wfiIop)
544    exec_output += QuiescePredOpExecute.subst(wfiIop)
545
546    sevCode = '''
547    SevMailbox = 1;
548    System *sys = xc->tcBase()->getSystemPtr();
549    for (int x = 0; x < sys->numContexts(); x++) {
550        ThreadContext *oc = sys->getThreadContext(x);
551        if (oc == xc->tcBase())
552            continue;
553        // Wake CPU with interrupt if they were sleeping
554        if (oc->readMiscReg(MISCREG_SEV_MAILBOX) == 0) {
555            // Post Interrupt and wake cpu if needed
556            oc->getCpuPtr()->postInterrupt(INT_SEV, 0);
557        }
558    }
559    '''
560    sevIop = InstObjParams("sev", "SevInst", "PredOp", \
561            { "code" : sevCode, "predicate_test" : predicateTest },
562            ["IsNonSpeculative", "IsSquashAfter", "IsUnverifiable"])
563    header_output += BasicDeclare.subst(sevIop)
564    decoder_output += BasicConstructor.subst(sevIop)
565    exec_output += PredOpExecute.subst(sevIop)
566
567    itIop = InstObjParams("it", "ItInst", "PredOp", \
568            { "code" : ";",
569              "predicate_test" : predicateTest }, [])
570    header_output += BasicDeclare.subst(itIop)
571    decoder_output += BasicConstructor.subst(itIop)
572    exec_output += PredOpExecute.subst(itIop)
573    unknownCode = '''
574    if (FullSystem)
575        return new UndefinedInstruction;
576    else
577        return new UndefinedInstruction(machInst, true);
578    '''
579    unknownIop = InstObjParams("unknown", "Unknown", "UnknownOp", \
580                               { "code": unknownCode,
581                                 "predicate_test": predicateTest })
582    header_output += BasicDeclare.subst(unknownIop)
583    decoder_output += BasicConstructor.subst(unknownIop)
584    exec_output += PredOpExecute.subst(unknownIop)
585
586    ubfxCode = '''
587        Dest = bits(Op1, imm2, imm1);
588    '''
589    ubfxIop = InstObjParams("ubfx", "Ubfx", "RegRegImmImmOp",
590                            { "code": ubfxCode,
591                              "predicate_test": predicateTest }, [])
592    header_output += RegRegImmImmOpDeclare.subst(ubfxIop)
593    decoder_output += RegRegImmImmOpConstructor.subst(ubfxIop)
594    exec_output += PredOpExecute.subst(ubfxIop)
595
596    sbfxCode = '''
597        int32_t resTemp = bits(Op1, imm2, imm1);
598        Dest = resTemp | -(resTemp & (1 << (imm2 - imm1)));
599    '''
600    sbfxIop = InstObjParams("sbfx", "Sbfx", "RegRegImmImmOp",
601                            { "code": sbfxCode,
602                              "predicate_test": predicateTest }, [])
603    header_output += RegRegImmImmOpDeclare.subst(sbfxIop)
604    decoder_output += RegRegImmImmOpConstructor.subst(sbfxIop)
605    exec_output += PredOpExecute.subst(sbfxIop)
606
607    bfcCode = '''
608        Dest = Op1 & ~(mask(imm2 - imm1 + 1) << imm1);
609    '''
610    bfcIop = InstObjParams("bfc", "Bfc", "RegRegImmImmOp",
611                           { "code": bfcCode,
612                             "predicate_test": predicateTest }, [])
613    header_output += RegRegImmImmOpDeclare.subst(bfcIop)
614    decoder_output += RegRegImmImmOpConstructor.subst(bfcIop)
615    exec_output += PredOpExecute.subst(bfcIop)
616
617    bfiCode = '''
618        uint32_t bitMask = (mask(imm2 - imm1 + 1) << imm1);
619        Dest = ((Op1 << imm1) & bitMask) | (Dest & ~bitMask);
620    '''
621    bfiIop = InstObjParams("bfi", "Bfi", "RegRegImmImmOp",
622                           { "code": bfiCode,
623                             "predicate_test": predicateTest }, [])
624    header_output += RegRegImmImmOpDeclare.subst(bfiIop)
625    decoder_output += RegRegImmImmOpConstructor.subst(bfiIop)
626    exec_output += PredOpExecute.subst(bfiIop)
627
628    mrc14code = '''
629    CPSR cpsr = Cpsr;
630    if (cpsr.mode == MODE_USER) {
631        if (FullSystem)
632            return new UndefinedInstruction;
633        else
634            return new UndefinedInstruction(false, mnemonic);
635    }
636    Dest = MiscOp1;
637    '''
638
639    mrc14Iop = InstObjParams("mrc", "Mrc14", "RegRegOp",
640                             { "code": mrc14code,
641                               "predicate_test": predicateTest }, [])
642    header_output += RegRegOpDeclare.subst(mrc14Iop)
643    decoder_output += RegRegOpConstructor.subst(mrc14Iop)
644    exec_output += PredOpExecute.subst(mrc14Iop)
645
646
647    mcr14code = '''
648    CPSR cpsr = Cpsr;
649    if (cpsr.mode == MODE_USER) {
650        if (FullSystem)
651            return new UndefinedInstruction;
652        else
653            return new UndefinedInstruction(false, mnemonic);
654    }
655    MiscDest = Op1;
656    '''
657    mcr14Iop = InstObjParams("mcr", "Mcr14", "RegRegOp",
658                             { "code": mcr14code,
659                               "predicate_test": predicateTest },
660                               ["IsSerializeAfter","IsNonSpeculative"])
661    header_output += RegRegOpDeclare.subst(mcr14Iop)
662    decoder_output += RegRegOpConstructor.subst(mcr14Iop)
663    exec_output += PredOpExecute.subst(mcr14Iop)
664
665    mrc14UserIop = InstObjParams("mrc", "Mrc14User", "RegRegOp",
666                                 { "code": "Dest = MiscOp1;",
667                                   "predicate_test": predicateTest }, [])
668    header_output += RegRegOpDeclare.subst(mrc14UserIop)
669    decoder_output += RegRegOpConstructor.subst(mrc14UserIop)
670    exec_output += PredOpExecute.subst(mrc14UserIop)
671
672    mcr14UserIop = InstObjParams("mcr", "Mcr14User", "RegRegOp",
673                                 { "code": "MiscDest = Op1",
674                                   "predicate_test": predicateTest },
675                                   ["IsSerializeAfter","IsNonSpeculative"])
676    header_output += RegRegOpDeclare.subst(mcr14UserIop)
677    decoder_output += RegRegOpConstructor.subst(mcr14UserIop)
678    exec_output += PredOpExecute.subst(mcr14UserIop)
679
680    mrc15code = '''
681    CPSR cpsr = Cpsr;
682    if (cpsr.mode == MODE_USER) {
683        if (FullSystem)
684            return new UndefinedInstruction;
685        else
686            return new UndefinedInstruction(false, mnemonic);
687    }
688    Dest = MiscOp1;
689    '''
690
691    mrc15Iop = InstObjParams("mrc", "Mrc15", "RegRegOp",
692                             { "code": mrc15code,
693                               "predicate_test": predicateTest }, [])
694    header_output += RegRegOpDeclare.subst(mrc15Iop)
695    decoder_output += RegRegOpConstructor.subst(mrc15Iop)
696    exec_output += PredOpExecute.subst(mrc15Iop)
697
698
699    mcr15code = '''
700    CPSR cpsr = Cpsr;
701    if (cpsr.mode == MODE_USER) {
702        if (FullSystem)
703            return new UndefinedInstruction;
704        else
705            return new UndefinedInstruction(false, mnemonic);
706    }
707    MiscDest = Op1;
708    '''
709    mcr15Iop = InstObjParams("mcr", "Mcr15", "RegRegOp",
710                             { "code": mcr15code,
711                               "predicate_test": predicateTest },
712                               ["IsSerializeAfter","IsNonSpeculative"])
713    header_output += RegRegOpDeclare.subst(mcr15Iop)
714    decoder_output += RegRegOpConstructor.subst(mcr15Iop)
715    exec_output += PredOpExecute.subst(mcr15Iop)
716
717    mrc15UserIop = InstObjParams("mrc", "Mrc15User", "RegRegOp",
718                                 { "code": "Dest = MiscOp1;",
719                                   "predicate_test": predicateTest }, [])
720    header_output += RegRegOpDeclare.subst(mrc15UserIop)
721    decoder_output += RegRegOpConstructor.subst(mrc15UserIop)
722    exec_output += PredOpExecute.subst(mrc15UserIop)
723
724    mcr15UserIop = InstObjParams("mcr", "Mcr15User", "RegRegOp",
725                                 { "code": "MiscDest = Op1",
726                                   "predicate_test": predicateTest },
727                                   ["IsSerializeAfter","IsNonSpeculative"])
728    header_output += RegRegOpDeclare.subst(mcr15UserIop)
729    decoder_output += RegRegOpConstructor.subst(mcr15UserIop)
730    exec_output += PredOpExecute.subst(mcr15UserIop)
731
732    enterxCode = '''
733        NextThumb = true;
734        NextJazelle = true;
735    '''
736    enterxIop = InstObjParams("enterx", "Enterx", "PredOp",
737                              { "code": enterxCode,
738                                "predicate_test": predicateTest }, [])
739    header_output += BasicDeclare.subst(enterxIop)
740    decoder_output += BasicConstructor.subst(enterxIop)
741    exec_output += PredOpExecute.subst(enterxIop)
742
743    leavexCode = '''
744        NextThumb = true;
745        NextJazelle = false;
746    '''
747    leavexIop = InstObjParams("leavex", "Leavex", "PredOp",
748                              { "code": leavexCode,
749                                "predicate_test": predicateTest }, [])
750    header_output += BasicDeclare.subst(leavexIop)
751    decoder_output += BasicConstructor.subst(leavexIop)
752    exec_output += PredOpExecute.subst(leavexIop)
753
754    setendCode = '''
755        CPSR cpsr = Cpsr;
756        cpsr.e = imm;
757        Cpsr = cpsr;
758    '''
759    setendIop = InstObjParams("setend", "Setend", "ImmOp",
760                              { "code": setendCode,
761                                "predicate_test": predicateTest },
762                              ["IsSerializeAfter","IsNonSpeculative"])
763    header_output += ImmOpDeclare.subst(setendIop)
764    decoder_output += ImmOpConstructor.subst(setendIop)
765    exec_output += PredOpExecute.subst(setendIop)
766
767    clrexCode = '''
768        LLSCLock = 0;
769    '''
770    clrexIop = InstObjParams("clrex", "Clrex","PredOp",
771                             { "code": clrexCode,
772                               "predicate_test": predicateTest },[])
773    header_output += BasicDeclare.subst(clrexIop)
774    decoder_output += BasicConstructor.subst(clrexIop)
775    exec_output += PredOpExecute.subst(clrexIop)
776
777    isbCode = '''
778        fault = new FlushPipe;
779    '''
780    isbIop = InstObjParams("isb", "Isb", "PredOp",
781                             {"code": isbCode,
782                               "predicate_test": predicateTest},
783                                ['IsSerializeAfter'])
784    header_output += BasicDeclare.subst(isbIop)
785    decoder_output += BasicConstructor.subst(isbIop)
786    exec_output += PredOpExecute.subst(isbIop)
787
788    dsbCode = '''
789        fault = new FlushPipe;
790    '''
791    dsbIop = InstObjParams("dsb", "Dsb", "PredOp",
792                             {"code": dsbCode,
793                               "predicate_test": predicateTest},
794                              ['IsMemBarrier', 'IsSerializeAfter'])
795    header_output += BasicDeclare.subst(dsbIop)
796    decoder_output += BasicConstructor.subst(dsbIop)
797    exec_output += PredOpExecute.subst(dsbIop)
798
799    dmbCode = '''
800    '''
801    dmbIop = InstObjParams("dmb", "Dmb", "PredOp",
802                             {"code": dmbCode,
803                               "predicate_test": predicateTest},
804                               ['IsMemBarrier'])
805    header_output += BasicDeclare.subst(dmbIop)
806    decoder_output += BasicConstructor.subst(dmbIop)
807    exec_output += PredOpExecute.subst(dmbIop)
808
809    dbgCode = '''
810    '''
811    dbgIop = InstObjParams("dbg", "Dbg", "PredOp",
812                             {"code": dbgCode,
813                               "predicate_test": predicateTest})
814    header_output += BasicDeclare.subst(dbgIop)
815    decoder_output += BasicConstructor.subst(dbgIop)
816    exec_output += PredOpExecute.subst(dbgIop)
817
818    cpsCode = '''
819    uint32_t mode = bits(imm, 4, 0);
820    uint32_t f = bits(imm, 5);
821    uint32_t i = bits(imm, 6);
822    uint32_t a = bits(imm, 7);
823    bool setMode = bits(imm, 8);
824    bool enable = bits(imm, 9);
825    CPSR cpsr = Cpsr;
826    SCTLR sctlr = Sctlr;
827    if (cpsr.mode != MODE_USER) {
828        if (enable) {
829            if (f) cpsr.f = 0;
830            if (i) cpsr.i = 0;
831            if (a) cpsr.a = 0;
832        } else {
833            if (f && !sctlr.nmfi) cpsr.f = 1;
834            if (i) cpsr.i = 1;
835            if (a) cpsr.a = 1;
836        }
837        if (setMode) {
838            cpsr.mode = mode;
839        }
840    }
841    Cpsr = cpsr;
842    '''
843    cpsIop = InstObjParams("cps", "Cps", "ImmOp",
844                           { "code": cpsCode,
845                             "predicate_test": predicateTest },
846                           ["IsSerializeAfter","IsNonSpeculative"])
847    header_output += ImmOpDeclare.subst(cpsIop)
848    decoder_output += ImmOpConstructor.subst(cpsIop)
849    exec_output += PredOpExecute.subst(cpsIop)
850}};
851