operands.isa revision 11514:eb53b59ea625 
1// -*- mode:c++ -*-
2// Copyright (c) 2010-2014 ARM Limited
3// All rights reserved
4//
5// The license below extends only to copyright in the software and shall
6// not be construed as granting a license to any other intellectual
7// property including but not limited to intellectual property relating
8// to a hardware implementation of the functionality of the software
9// licensed hereunder.  You may use the software subject to the license
10// terms below provided that you ensure that this notice is replicated
11// unmodified and in its entirety in all distributions of the software,
12// modified or unmodified, in source code or in binary form.
13//
14// Copyright (c) 2007-2008 The Florida State University
15// All rights reserved.
16//
17// Redistribution and use in source and binary forms, with or without
18// modification, are permitted provided that the following conditions are
19// met: redistributions of source code must retain the above copyright
20// notice, this list of conditions and the following disclaimer;
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39//
40// Authors: Stephen Hines
41
42def operand_types {{
43    'sb' : 'int8_t',
44    'ub' : 'uint8_t',
45    'sh' : 'int16_t',
46    'uh' : 'uint16_t',
47    'sw' : 'int32_t',
48    'uw' : 'uint32_t',
49    'ud' : 'uint64_t',
50    'tud' : 'Twin64_t',
51    'sf' : 'float',
52    'df' : 'double'
53}};
54
55let {{
56    maybePCRead = '''
57        ((%(reg_idx)s == PCReg) ? readPC(xc) : xc->%(func)s(this, %(op_idx)s))
58    '''
59    maybeAlignedPCRead = '''
60        ((%(reg_idx)s == PCReg) ? (roundDown(readPC(xc), 4)) :
61         xc->%(func)s(this, %(op_idx)s))
62    '''
63    maybePCWrite = '''
64        ((%(reg_idx)s == PCReg) ? setNextPC(xc, %(final_val)s) :
65         xc->%(func)s(this, %(op_idx)s, %(final_val)s))
66    '''
67    maybeIWPCWrite = '''
68        ((%(reg_idx)s == PCReg) ? setIWNextPC(xc, %(final_val)s) :
69         xc->%(func)s(this, %(op_idx)s, %(final_val)s))
70    '''
71    maybeAIWPCWrite = '''
72        if (%(reg_idx)s == PCReg) {
73            bool thumb = THUMB;
74            if (thumb) {
75                setNextPC(xc, %(final_val)s);
76            } else {
77                setIWNextPC(xc, %(final_val)s);
78            }
79        } else {
80            xc->%(func)s(this, %(op_idx)s, %(final_val)s);
81        }
82    '''
83    aarch64Read = '''
84        ((xc->%(func)s(this, %(op_idx)s)) & mask(intWidth))
85    '''
86    aarch64Write = '''
87        xc->%(func)s(this, %(op_idx)s, (%(final_val)s) & mask(intWidth))
88    '''
89    aarchX64Read = '''
90        ((xc->%(func)s(this, %(op_idx)s)) & mask(aarch64 ? 64 : 32))
91    '''
92    aarchX64Write = '''
93        xc->%(func)s(this, %(op_idx)s, (%(final_val)s) & mask(aarch64 ? 64 : 32))
94    '''
95    aarchW64Read = '''
96        ((xc->%(func)s(this, %(op_idx)s)) & mask(32))
97    '''
98    aarchW64Write = '''
99        xc->%(func)s(this, %(op_idx)s, (%(final_val)s) & mask(32))
100    '''
101    cntrlNsBankedWrite = '''
102        xc->setMiscReg(flattenMiscRegNsBanked(dest, xc->tcBase()), %(final_val)s)
103    '''
104
105    cntrlNsBankedRead = '''
106        xc->readMiscReg(flattenMiscRegNsBanked(op1, xc->tcBase()))
107    '''
108
109    #PCState operands need to have a sorting index (the number at the end)
110    #less than all the integer registers which might update the PC. That way
111    #if the flag bits of the pc state are updated and a branch happens through
112    #R15, the updates are layered properly and the R15 update isn't lost.
113    srtNormal = 5
114    srtCpsr = 4
115    srtBase = 3
116    srtPC = 2
117    srtMode = 1
118    srtEPC = 0
119
120    def floatReg(idx):
121        return ('FloatReg', 'sf', idx, 'IsFloating', srtNormal)
122
123    def intReg(idx):
124        return ('IntReg', 'uw', idx, 'IsInteger', srtNormal,
125                maybePCRead, maybePCWrite)
126
127    def intReg64(idx):
128        return ('IntReg', 'ud', idx, 'IsInteger', srtNormal,
129                aarch64Read, aarch64Write)
130
131    def intRegX64(idx, id = srtNormal):
132        return ('IntReg', 'ud', idx, 'IsInteger', id,
133                aarchX64Read, aarchX64Write)
134
135    def intRegW64(idx, id = srtNormal):
136        return ('IntReg', 'ud', idx, 'IsInteger', id,
137                aarchW64Read, aarchW64Write)
138
139    def intRegNPC(idx):
140        return ('IntReg', 'uw', idx, 'IsInteger', srtNormal)
141
142    def intRegAPC(idx, id = srtNormal):
143        return ('IntReg', 'uw', idx, 'IsInteger', id,
144                maybeAlignedPCRead, maybePCWrite)
145
146    def intRegIWPC(idx):
147        return ('IntReg', 'uw', idx, 'IsInteger', srtNormal,
148                maybePCRead, maybeIWPCWrite)
149
150    def intRegAIWPC(idx):
151        return ('IntReg', 'uw', idx, 'IsInteger', srtNormal,
152                maybePCRead, maybeAIWPCWrite)
153
154    def ccReg(idx):
155        return ('CCReg', 'uw', idx, None, srtNormal)
156
157    def cntrlReg(idx, id = srtNormal, type = 'uw'):
158        return ('ControlReg', type, idx, None, id)
159
160    def cntrlNsBankedReg(idx, id = srtNormal, type = 'uw'):
161        return ('ControlReg', type, idx, (None, None, 'IsControl'), id, cntrlNsBankedRead, cntrlNsBankedWrite)
162
163    def cntrlNsBankedReg64(idx, id = srtNormal, type = 'ud'):
164        return ('ControlReg', type, idx, (None, None, 'IsControl'), id, cntrlNsBankedRead, cntrlNsBankedWrite)
165
166    def cntrlRegNC(idx, id = srtNormal, type = 'uw'):
167        return ('ControlReg', type, idx, None, id)
168
169    def pcStateReg(idx, id):
170        return ('PCState', 'ud', idx, (None, None, 'IsControl'), id)
171}};
172
173def operands {{
174    #Abstracted integer reg operands
175    'Dest': intReg('dest'),
176    'Dest64': intReg64('dest'),
177    'XDest': intRegX64('dest'),
178    'WDest': intRegW64('dest'),
179    'IWDest': intRegIWPC('dest'),
180    'AIWDest': intRegAIWPC('dest'),
181    'Dest2': intReg('dest2'),
182    'XDest2': intRegX64('dest2'),
183    'FDest2': floatReg('dest2'),
184    'Result': intReg('result'),
185    'XResult': intRegX64('result'),
186    'XBase': intRegX64('base', id = srtBase),
187    'Base': intRegAPC('base', id = srtBase),
188    'XOffset': intRegX64('offset'),
189    'Index': intReg('index'),
190    'Shift': intReg('shift'),
191    'Op1': intReg('op1'),
192    'Op2': intReg('op2'),
193    'Op3': intReg('op3'),
194    'Op164': intReg64('op1'),
195    'Op264': intReg64('op2'),
196    'Op364': intReg64('op3'),
197    'XOp1': intRegX64('op1'),
198    'XOp2': intRegX64('op2'),
199    'XOp3': intRegX64('op3'),
200    'WOp1': intRegW64('op1'),
201    'WOp2': intRegW64('op2'),
202    'WOp3': intRegW64('op3'),
203    'Reg0': intReg('reg0'),
204    'Reg1': intReg('reg1'),
205    'Reg2': intReg('reg2'),
206    'Reg3': intReg('reg3'),
207
208    #Fixed index integer reg operands
209    'SpMode': intRegNPC('intRegInMode((OperatingMode)regMode, INTREG_SP)'),
210    'DecodedBankedIntReg': intRegNPC('decodeMrsMsrBankedIntRegIndex(byteMask, r)'),
211    'LR': intRegNPC('INTREG_LR'),
212    'XLR': intRegX64('INTREG_X30'),
213    'R7': intRegNPC('7'),
214    # First four arguments are passed in registers
215    'R0': intRegNPC('0'),
216    'R1': intRegNPC('1'),
217    'R2': intRegNPC('2'),
218    'R3': intRegNPC('3'),
219    'X0': intRegX64('0'),
220    'X1': intRegX64('1'),
221    'X2': intRegX64('2'),
222    'X3': intRegX64('3'),
223
224    # Condition code registers
225    'CondCodesNZ': ccReg('CCREG_NZ'),
226    'CondCodesC': ccReg('CCREG_C'),
227    'CondCodesV': ccReg('CCREG_V'),
228    'CondCodesGE': ccReg('CCREG_GE'),
229    'OptCondCodesNZ': ccReg(
230            '''((condCode == COND_AL || condCode == COND_UC ||
231                 condCode == COND_CC || condCode == COND_CS ||
232                 condCode == COND_VS || condCode == COND_VC) ?
233                CCREG_ZERO : CCREG_NZ)'''),
234    'OptCondCodesC': ccReg(
235             '''((condCode == COND_HI || condCode == COND_LS ||
236                condCode == COND_CS || condCode == COND_CC) ?
237               CCREG_C : CCREG_ZERO)'''),
238    'OptShiftRmCondCodesC': ccReg(
239            '''((condCode == COND_HI || condCode == COND_LS ||
240                 condCode == COND_CS || condCode == COND_CC ||
241                 shiftType == ROR) ?
242                CCREG_C : CCREG_ZERO)'''),
243    'OptCondCodesV': ccReg(
244            '''((condCode == COND_VS || condCode == COND_VC ||
245                 condCode == COND_GE || condCode == COND_LT ||
246                 condCode == COND_GT || condCode == COND_LE) ?
247                CCREG_V : CCREG_ZERO)'''),
248    'FpCondCodes': ccReg('CCREG_FP'),
249
250    #Abstracted floating point reg operands
251    'FpDest': floatReg('(dest + 0)'),
252    'FpDestP0': floatReg('(dest + 0)'),
253    'FpDestP1': floatReg('(dest + 1)'),
254    'FpDestP2': floatReg('(dest + 2)'),
255    'FpDestP3': floatReg('(dest + 3)'),
256    'FpDestP4': floatReg('(dest + 4)'),
257    'FpDestP5': floatReg('(dest + 5)'),
258    'FpDestP6': floatReg('(dest + 6)'),
259    'FpDestP7': floatReg('(dest + 7)'),
260    'FpDestS0P0': floatReg('(dest + step * 0 + 0)'),
261    'FpDestS0P1': floatReg('(dest + step * 0 + 1)'),
262    'FpDestS1P0': floatReg('(dest + step * 1 + 0)'),
263    'FpDestS1P1': floatReg('(dest + step * 1 + 1)'),
264    'FpDestS2P0': floatReg('(dest + step * 2 + 0)'),
265    'FpDestS2P1': floatReg('(dest + step * 2 + 1)'),
266    'FpDestS3P0': floatReg('(dest + step * 3 + 0)'),
267    'FpDestS3P1': floatReg('(dest + step * 3 + 1)'),
268
269    'FpDest2': floatReg('(dest2 + 0)'),
270    'FpDest2P0': floatReg('(dest2 + 0)'),
271    'FpDest2P1': floatReg('(dest2 + 1)'),
272    'FpDest2P2': floatReg('(dest2 + 2)'),
273    'FpDest2P3': floatReg('(dest2 + 3)'),
274
275    'FpOp1': floatReg('(op1 + 0)'),
276    'FpOp1P0': floatReg('(op1 + 0)'),
277    'FpOp1P1': floatReg('(op1 + 1)'),
278    'FpOp1P2': floatReg('(op1 + 2)'),
279    'FpOp1P3': floatReg('(op1 + 3)'),
280    'FpOp1P4': floatReg('(op1 + 4)'),
281    'FpOp1P5': floatReg('(op1 + 5)'),
282    'FpOp1P6': floatReg('(op1 + 6)'),
283    'FpOp1P7': floatReg('(op1 + 7)'),
284    'FpOp1S0P0': floatReg('(op1 + step * 0 + 0)'),
285    'FpOp1S0P1': floatReg('(op1 + step * 0 + 1)'),
286    'FpOp1S1P0': floatReg('(op1 + step * 1 + 0)'),
287    'FpOp1S1P1': floatReg('(op1 + step * 1 + 1)'),
288    'FpOp1S2P0': floatReg('(op1 + step * 2 + 0)'),
289    'FpOp1S2P1': floatReg('(op1 + step * 2 + 1)'),
290    'FpOp1S3P0': floatReg('(op1 + step * 3 + 0)'),
291    'FpOp1S3P1': floatReg('(op1 + step * 3 + 1)'),
292
293    'FpOp2': floatReg('(op2 + 0)'),
294    'FpOp2P0': floatReg('(op2 + 0)'),
295    'FpOp2P1': floatReg('(op2 + 1)'),
296    'FpOp2P2': floatReg('(op2 + 2)'),
297    'FpOp2P3': floatReg('(op2 + 3)'),
298
299    # Create AArch64 unpacked view of the FP registers
300    'AA64FpOp1P0':   floatReg('((op1 * 4) + 0)'),
301    'AA64FpOp1P1':   floatReg('((op1 * 4) + 1)'),
302    'AA64FpOp1P2':   floatReg('((op1 * 4) + 2)'),
303    'AA64FpOp1P3':   floatReg('((op1 * 4) + 3)'),
304    'AA64FpOp2P0':   floatReg('((op2 * 4) + 0)'),
305    'AA64FpOp2P1':   floatReg('((op2 * 4) + 1)'),
306    'AA64FpOp2P2':   floatReg('((op2 * 4) + 2)'),
307    'AA64FpOp2P3':   floatReg('((op2 * 4) + 3)'),
308    'AA64FpOp3P0':   floatReg('((op3 * 4) + 0)'),
309    'AA64FpOp3P1':   floatReg('((op3 * 4) + 1)'),
310    'AA64FpOp3P2':   floatReg('((op3 * 4) + 2)'),
311    'AA64FpOp3P3':   floatReg('((op3 * 4) + 3)'),
312    'AA64FpDestP0':  floatReg('((dest * 4) + 0)'),
313    'AA64FpDestP1':  floatReg('((dest * 4) + 1)'),
314    'AA64FpDestP2':  floatReg('((dest * 4) + 2)'),
315    'AA64FpDestP3':  floatReg('((dest * 4) + 3)'),
316    'AA64FpDest2P0': floatReg('((dest2 * 4) + 0)'),
317    'AA64FpDest2P1': floatReg('((dest2 * 4) + 1)'),
318    'AA64FpDest2P2': floatReg('((dest2 * 4) + 2)'),
319    'AA64FpDest2P3': floatReg('((dest2 * 4) + 3)'),
320
321    'AA64FpOp1P0V0':   floatReg('((((op1+0)) * 4) + 0)'),
322    'AA64FpOp1P1V0':   floatReg('((((op1+0)) * 4) + 1)'),
323    'AA64FpOp1P2V0':   floatReg('((((op1+0)) * 4) + 2)'),
324    'AA64FpOp1P3V0':   floatReg('((((op1+0)) * 4) + 3)'),
325
326    'AA64FpOp1P0V1':   floatReg('((((op1+1)) * 4) + 0)'),
327    'AA64FpOp1P1V1':   floatReg('((((op1+1)) * 4) + 1)'),
328    'AA64FpOp1P2V1':   floatReg('((((op1+1)) * 4) + 2)'),
329    'AA64FpOp1P3V1':   floatReg('((((op1+1)) * 4) + 3)'),
330
331    'AA64FpOp1P0V2':   floatReg('((((op1+2)) * 4) + 0)'),
332    'AA64FpOp1P1V2':   floatReg('((((op1+2)) * 4) + 1)'),
333    'AA64FpOp1P2V2':   floatReg('((((op1+2)) * 4) + 2)'),
334    'AA64FpOp1P3V2':   floatReg('((((op1+2)) * 4) + 3)'),
335
336    'AA64FpOp1P0V3':   floatReg('((((op1+3)) * 4) + 0)'),
337    'AA64FpOp1P1V3':   floatReg('((((op1+3)) * 4) + 1)'),
338    'AA64FpOp1P2V3':   floatReg('((((op1+3)) * 4) + 2)'),
339    'AA64FpOp1P3V3':   floatReg('((((op1+3)) * 4) + 3)'),
340
341    'AA64FpOp1P0V0S':   floatReg('((((op1+0)%32) * 4) + 0)'),
342    'AA64FpOp1P1V0S':   floatReg('((((op1+0)%32) * 4) + 1)'),
343    'AA64FpOp1P2V0S':   floatReg('((((op1+0)%32) * 4) + 2)'),
344    'AA64FpOp1P3V0S':   floatReg('((((op1+0)%32) * 4) + 3)'),
345
346    'AA64FpOp1P0V1S':   floatReg('((((op1+1)%32) * 4) + 0)'),
347    'AA64FpOp1P1V1S':   floatReg('((((op1+1)%32) * 4) + 1)'),
348    'AA64FpOp1P2V1S':   floatReg('((((op1+1)%32) * 4) + 2)'),
349    'AA64FpOp1P3V1S':   floatReg('((((op1+1)%32) * 4) + 3)'),
350
351    'AA64FpOp1P0V2S':   floatReg('((((op1+2)%32) * 4) + 0)'),
352    'AA64FpOp1P1V2S':   floatReg('((((op1+2)%32) * 4) + 1)'),
353    'AA64FpOp1P2V2S':   floatReg('((((op1+2)%32) * 4) + 2)'),
354    'AA64FpOp1P3V2S':   floatReg('((((op1+2)%32) * 4) + 3)'),
355
356    'AA64FpOp1P0V3S':   floatReg('((((op1+3)%32) * 4) + 0)'),
357    'AA64FpOp1P1V3S':   floatReg('((((op1+3)%32) * 4) + 1)'),
358    'AA64FpOp1P2V3S':   floatReg('((((op1+3)%32) * 4) + 2)'),
359    'AA64FpOp1P3V3S':   floatReg('((((op1+3)%32) * 4) + 3)'),
360
361    'AA64FpDestP0V0':   floatReg('((((dest+0)) * 4) + 0)'),
362    'AA64FpDestP1V0':   floatReg('((((dest+0)) * 4) + 1)'),
363    'AA64FpDestP2V0':   floatReg('((((dest+0)) * 4) + 2)'),
364    'AA64FpDestP3V0':   floatReg('((((dest+0)) * 4) + 3)'),
365
366    'AA64FpDestP0V1':   floatReg('((((dest+1)) * 4) + 0)'),
367    'AA64FpDestP1V1':   floatReg('((((dest+1)) * 4) + 1)'),
368    'AA64FpDestP2V1':   floatReg('((((dest+1)) * 4) + 2)'),
369    'AA64FpDestP3V1':   floatReg('((((dest+1)) * 4) + 3)'),
370
371    'AA64FpDestP0V0L':   floatReg('((((dest+0)%32) * 4) + 0)'),
372    'AA64FpDestP1V0L':   floatReg('((((dest+0)%32) * 4) + 1)'),
373    'AA64FpDestP2V0L':   floatReg('((((dest+0)%32) * 4) + 2)'),
374    'AA64FpDestP3V0L':   floatReg('((((dest+0)%32) * 4) + 3)'),
375
376    'AA64FpDestP0V1L':   floatReg('((((dest+1)%32) * 4) + 0)'),
377    'AA64FpDestP1V1L':   floatReg('((((dest+1)%32) * 4) + 1)'),
378    'AA64FpDestP2V1L':   floatReg('((((dest+1)%32) * 4) + 2)'),
379    'AA64FpDestP3V1L':   floatReg('((((dest+1)%32) * 4) + 3)'),
380
381    #Abstracted control reg operands
382    'MiscDest': cntrlReg('dest'),
383    'MiscOp1': cntrlReg('op1'),
384    'MiscNsBankedDest': cntrlNsBankedReg('dest'),
385    'MiscNsBankedOp1': cntrlNsBankedReg('op1'),
386    'MiscNsBankedDest64': cntrlNsBankedReg64('dest'),
387    'MiscNsBankedOp164': cntrlNsBankedReg64('op1'),
388
389    #Fixed index control regs
390    'Cpsr': cntrlReg('MISCREG_CPSR', srtCpsr),
391    'CpsrQ': cntrlReg('MISCREG_CPSR_Q', srtCpsr),
392    'Spsr': cntrlRegNC('MISCREG_SPSR'),
393    'Fpsr': cntrlRegNC('MISCREG_FPSR'),
394    'Fpsid': cntrlRegNC('MISCREG_FPSID'),
395    'Fpscr': cntrlRegNC('MISCREG_FPSCR'),
396    'FpscrQc': cntrlRegNC('MISCREG_FPSCR_QC'),
397    'FpscrExc': cntrlRegNC('MISCREG_FPSCR_EXC'),
398    'Cpacr': cntrlReg('MISCREG_CPACR'),
399    'Cpacr64': cntrlReg('MISCREG_CPACR_EL1'),
400    'Fpexc': cntrlRegNC('MISCREG_FPEXC'),
401    'Nsacr': cntrlReg('MISCREG_NSACR'),
402    'ElrHyp': cntrlRegNC('MISCREG_ELR_HYP'),
403    'Hcr': cntrlReg('MISCREG_HCR'),
404    'Hcr64': cntrlReg('MISCREG_HCR_EL2'),
405    'Hdcr': cntrlReg('MISCREG_HDCR'),
406    'Hcptr': cntrlReg('MISCREG_HCPTR'),
407    'CptrEl264': cntrlReg('MISCREG_CPTR_EL2'),
408    'CptrEl364': cntrlReg('MISCREG_CPTR_EL3'),
409    'Hstr': cntrlReg('MISCREG_HSTR'),
410    'Scr': cntrlReg('MISCREG_SCR'),
411    'Scr64': cntrlReg('MISCREG_SCR_EL3'),
412    'Sctlr': cntrlRegNC('MISCREG_SCTLR'),
413    'SevMailbox': cntrlRegNC('MISCREG_SEV_MAILBOX'),
414    'LLSCLock': cntrlRegNC('MISCREG_LOCKFLAG'),
415    'Dczid' : cntrlRegNC('MISCREG_DCZID_EL0'),
416
417    #Register fields for microops
418    'URa' : intReg('ura'),
419    'XURa' : intRegX64('ura'),
420    'WURa' : intRegW64('ura'),
421    'IWRa' : intRegIWPC('ura'),
422    'Fa' : floatReg('ura'),
423    'FaP1' : floatReg('ura + 1'),
424    'URb' : intReg('urb'),
425    'XURb' : intRegX64('urb'),
426    'URc' : intReg('urc'),
427    'XURc' : intRegX64('urc'),
428
429    #Memory Operand
430    'Mem': ('Mem', 'uw', None, ('IsMemRef', 'IsLoad', 'IsStore'), srtNormal),
431
432    #PCState fields
433    'RawPC': pcStateReg('pc', srtPC),
434    'PC': pcStateReg('instPC', srtPC),
435    'NPC': pcStateReg('instNPC', srtPC),
436    'pNPC': pcStateReg('instNPC', srtEPC),
437    'IWNPC': pcStateReg('instIWNPC', srtPC),
438    'Thumb': pcStateReg('thumb', srtPC),
439    'NextThumb': pcStateReg('nextThumb', srtMode),
440    'NextJazelle': pcStateReg('nextJazelle', srtMode),
441    'NextItState': pcStateReg('nextItstate', srtMode),
442    'Itstate': pcStateReg('itstate', srtMode),
443    'NextAArch64': pcStateReg('nextAArch64', srtMode),
444
445    #Register operands depending on a field in the instruction encoding. These
446    #should be avoided since they may not be portable across different
447    #encodings of the same instruction.
448    'Rd': intReg('RD'),
449    'Rm': intReg('RM'),
450    'Rs': intReg('RS'),
451    'Rn': intReg('RN'),
452    'Rt': intReg('RT')
453}};
454