IBM PPC440X5 Manual de usuario Pagina 433
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Valorado. / 5. Basado en revisión del cliente
subfme
Subtract from Minus One Extended
Preliminary PPC440x5 CPU Core User’s Manual
instrset.fm.
September 12, 2002 Page 433 of 589
subfme
Subtract from Minus One Extended
(RT) ←¬(RA) – 1 + XER[CA]
if
¬(RA) + 0xFFFF FFFF + XER[CA] 2
32
– 1 then
XER[CA]
← 1
else
XER[CA]
← 0
The sum of the ones complement of register RA, –1, and XER[CA] is placed into register RT.
XER[CA] is set to a value determined by the unsigned magnitude of the result of the subtract operation.
Registers Altered
•RT
• CR[CR0] if Rc contains 1
• XER[SO, OV] if OE contains 1
• XER[CA]
Invalid Instruction Forms
• Reserved fields
subfme RT, RA OE=0, Rc=0
subfme. RT, RA OE=0, Rc=1
subfmeo RT, RA OE=1, Rc=0
subfmeo. RT, RA OE=1, Rc=1
31 RT RA OE 232 Rc
0 6 11 16 21 22 31
>
u
- PPC440x5 CPU Core 1
- User’s Manual 1
- Preliminary 1
- Copyright and Disclaimer 2
- Contents 3
- Page 4 of 583 4
- Page 5 of 583 5
- Page 6 of 583 6
- Page 7 of 583 7
- Page 8 of 583 8
- Page 9 of 583 9
- PPC440x5 CPU Core Preliminary 10
- Page 10 of 583 10
- Page 11 of 583 11
- Page 12 of 583 12
- Page 13 of 583 13
- Page 14 of 583 14
- Page 15 of 583 15
- Page 16 of 583 16
- Page 17 of 583 17
- Page 18 of 583 18
- Page 19 of 583 19
- Page 20 of 583 20
- Page 21 of 583 21
- Page 22 of 583 22
- About This Book 23
- Notation 24
- Related Publications 25
- Page 26 of 589 26
- 1. Overview 27
- – 64-bit time base 28
- Page 29 of 589 29
- 1.3 PPC440x5 Organization 30
- Page 31 of 589 31
- Page 32 of 589 32
- Page 33 of 589 33
- Page 34 of 589 34
- 1.4 Core Interfaces 35
- Page 36 of 589 36
- Page 37 of 589 37
- Page 38 of 589 38
- 2. Programming Model 39
- Page 40 of 589 40
- Page 41 of 589 41
- Page 42 of 589 42
- Page 43 of 589 43
- Page 44 of 589 44
- Page 45 of 589 45
- Page 46 of 589 46
- 2.2 Registers 47
- Page 48 of 589 48
- Page 49 of 589 49
- Page 51 of 589 51
- Page 52 of 589 52
- 2.3 Instruction Classes 53
- Page 54 of 589 54
- Page 55 of 589 55
- Page 56 of 589 56
- Page 57 of 589 57
- Page 58 of 589 58
- .]” syntax 59
- Page 61 of 589 61
- .]” and “[o]” 63
- 2.5 Branch Processing 64
- Page 65 of 589 65
- Page 66 of 589 66
- Page 67 of 589 67
- Page 68 of 589 68
- Page 69 of 589 69
- Page 70 of 589 70
- 2.6 Integer Processing 71
- Page 72 of 589 72
- Page 73 of 589 73
- 2.7 Processor Control 74
- Page 75 of 589 75
- Page 76 of 589 76
- Page 77 of 589 77
- Page 78 of 589 78
- Page 79 of 589 79
- 2.8 User and Supervisor Modes 80
- 2.9 Speculative Accesses 81
- 2.10 Synchronization 82
- Page 83 of 589 83
- Page 84 of 589 84
- 3. Initialization 85
- Page 86 of 589 86
- Page 88 of 589 88
- 3.2 Reset Types 89
- 3.3 Reset Sources 89
- Page 90 of 589 90
- Page 91 of 589 91
- Page 92 of 589 92
- Page 93 of 589 93
- Page 94 of 589 94
- Page 95 of 589 95
- Page 96 of 589 96
- Page 97 of 589 97
- Page 98 of 589 98
- Page 99 of 589 99
- Page 100 of 589 100
- Preliminary PPC440x5 CPU Core 101
- Page 101 of 589 101
- TRANSIENT LINES 102
- LOCKED LINES 102
- NORMAL LINES 102
- Page 103 of 589 103
- Page 104 of 589 104
- Programming Note: 105
- Page 106 of 589 106
- Page 107 of 589 107
- Page 108 of 589 108
- Page 109 of 589 109
- Page 110 of 589 110
- Page 111 of 589 111
- Page 112 of 589 112
- 0 Cache line is not valid 113
- 1 Cache line is valid 113
- 0 TID enable 114
- 1 TID disable 114
- 4.3 Data Cache Controller 115
- Page 116 of 589 116
- Page 118 of 589 118
- Page 119 of 589 119
- Page 120 of 589 120
- Page 121 of 589 121
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- Page 123 of 589 123
- Page 124 of 589 124
- Page 125 of 589 125
- Page 126 of 589 126
- Page 127 of 589 127
- Page 129 of 589 129
- Page 130 of 589 130
- Page 131 of 589 131
- Page 132 of 589 132
- 5. Memory Management 133
- Page 134 of 589 134
- Page 135 of 589 135
- Page 136 of 589 136
- Page 137 of 589 137
- 5.3 Page Identification 138
- Page 139 of 589 139
- 5.4 Address Translation 140
- MSR[IS] for instruction fetch 141
- 5.5 Access Control 142
- Page 143 of 589 143
- Page 144 of 589 144
- 5.6 Storage Attributes 145
- Page 146 of 589 146
- 5.7 Storage Control Registers 147
- Page 148 of 589 148
- Page 149 of 589 149
- Page 150 of 589 150
- 5.8 Shadow TLB Arrays 151
- Page 152 of 589 152
- Page 153 of 589 153
- Page 154 of 589 154
- 5.11 TLB Parity Operations 155
- Page 156 of 589 156
- Page 157 of 589 157
- Page 158 of 589 158
- 6. Interrupts and Exceptions 159
- Page 160 of 589 160
- Page 161 of 589 161
- 6.3 Interrupt Processing 162
- Page 163 of 589 163
- Page 164 of 589 164
- Page 165 of 589 165
- Page 166 of 589 166
- Page 167 of 589 167
- Page 168 of 589 168
- Page 169 of 589 169
- Page 170 of 589 170
- Page 171 of 589 171
- Page 172 of 589 172
- Page 173 of 589 173
- Page 174 of 589 174
- 6.5 Interrupt Definitions 175
- Page 176 of 589 176
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- Page 182 of 589 182
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- Page 191 of 589 191
- Page 192 of 589 192
- Page 193 of 589 193
- Page 194 of 589 194
- Page 195 of 589 195
- Page 196 of 589 196
- Page 197 of 589 197
- Machine State Register (MSR) 198
- ME Unchanged 198
- All other MSR bits set to 0 198
- Page 199 of 589 199
- Page 200 of 589 200
- Page 201 of 589 201
- 6.7 Exception Priorities 202
- Page 203 of 589 203
- Page 204 of 589 204
- Page 205 of 589 205
- Page 206 of 589 206
- Page 207 of 589 207
- Page 208 of 589 208
- 7.1 Time Base 209
- Page 210 of 589 210
- 7.2 Decrementer (DEC) 211
- Page 212 of 589 212
- 7.4 Watchdog Timer 213
- Page 214 of 589 214
- Page 215 of 589 215
- Page 216 of 589 216
- Page 217 of 589 217
- Page 218 of 589 218
- 8. Debug Facilities 219
- Page 220 of 589 220
- 8.3 Debug Events 221
- IAC Event Enable Field 222
- IAC Mode Field 222
- IAC User/Supervisor Field 223
- Page 224 of 589 224
- Page 225 of 589 225
- DAC Event Enable Field 226
- DAC Mode Field 227
- DAC User/Supervisor Field 228
- DVC Byte Enable Field 228
- Page 229 of 589 229
- Page 230 of 589 230
- Page 231 of 589 231
- DVC Mode Field 232
- Page 233 of 589 233
- Page 234 of 589 234
- Page 235 of 589 235
- Page 236 of 589 236
- Page 237 of 589 237
- 8.4 Debug Reset 238
- 8.5 Debug Timer Freeze 238
- 8.6 Debug Registers 238
- 01 Core reset 239
- 01 Reserved 240
- ≤ address < IAC2 241
- ≤ address < IAC4 241
- Page 242 of 589 242
- Page 243 of 589 243
- Page 245 of 589 245
- Page 246 of 589 246
- Page 247 of 589 247
- Page 248 of 589 248
- 9. Instruction Set 249
- 9.2 Instruction Formats 250
- 9.3 Pseudocode 251
- Page 252 of 589 252
- 9.4 Register Usage 253
- PPC440x5 core 254
- Registers Altered 255
- Add Carrying 256
- Add Extended 257
- Add Immediate 258
- Programming Note 258
- Add Immediate Carrying 259
- Invalid Instruction Forms 262
- AND with Complement 265
- AND Immediate 266
- AND Immediate Shifted 267
- Branch Conditional 270
- Page 270 of 589 270
- Page 271 of 589 271
- ← CIA + 4 272
- Page 273 of 589 273
- Page 274 of 589 274
- Page 276 of 589 276
- Page 277 of 589 277
- Page 279 of 589 279
- Page 280 of 589 280
- Page 281 of 589 281
- Programming Notes 284
- Count Leading Zeros Word 286
- Data Cache Block Allocate 295
- Data Cache Block Flush 296
- Exceptions 296
- Data Cache Block Store 298
- Page 301 of 589 301
- Data Cache Block Set to Zero 303
- Page 303 of 589 303
- Architecture Note 304
- Data Cache Read 305
- Divide Word 307
- Divide Word Unsigned 308
- Equivalent 310
- Extend Sign Byte 311
- Extend Sign Halfword 312
- Instruction Cache Block Touch 315
- Page 315 of 589 315
- Instruction Cache Read 317
- Instruction Synchronize 320
- Load Byte and Zero 321
- Load Byte and Zero Indexed 324
- Load Halfword Algebraic 325
- Load Halfword and Zero 330
- Load Multiple Word 334
- Load Word and Reserve Indexed 339
- Load Word and Zero 341
- Load Word and Zero Indexed 344
- Move Condition Register Field 358
- Move From Condition Register 360
- Page 364 of 589 364
- Page 365 of 589 365
- Page 371 of 589 371
- Page 372 of 589 372
- OR with Complement 393
- OR Immediate 394
- OR Immediate Shifted 395
- Return From Interrupt 397
- Page 401 of 589 401
- Page 402 of 589 402
- Shift Left Word 405
- Shift Right Word 408
- Store Byte 409
- Store Byte with Update 410
- Store Byte Indexed 412
- Store Halfword 413
- Store Halfword with Update 415
- Store Halfword Indexed 417
- Store Multiple Word 418
- Store Word 422
- Page 425 of 589 425
- Store Word with Update 426
- Store Word Indexed 428
- Subtract From 429
- Subtract From Carrying 430
- Subtract From Extended 431
- TLB Read Entry 435
- Page 435 of 589 435
- TLB Synchronize 438
- Trap Word 441
- Page 441 of 589 441
- Page 442 of 589 442
- Trap Word Immediate 444
- Page 444 of 589 444
- Extended mnemonic for 445
- Invalid Instruction Forms: 446
- XOR Immediate 449
- XOR Immediate Shifted 450
- 10. Register Summary 451
- ICDBDR, ICDBTRH, ICDBTRL 452
- Page 453 of 589 453
- Page 454 of 589 454
- Page 455 of 589 455
- Page 456 of 589 456
- 10.2 Reserved Fields 457
- 10.3 Device Control Registers 457
- Page 458 of 589 458
- 0.Register Summary 459
- SPR 0x3B3 Supervisor R/W 460
- CCR0 (cont.) 461
- SPR 0x378 Supervisor R/W 462
- CCR1 (cont.) 463
- User Read/Write 464
- SPR 0x03A Supervisor R/W 465
- SPR 0x03B Supervisor R/W 466
- SPR 0x009 User R/W 467
- DAC1–DAC2 468
- SPR 0x134 Supervisor R/W 469
- DBCR0 (cont.) 470
- DBCR1 (cont.) 472
- Debug Control Register 2 473
- Page 473 of 589 473
- DBCR2 (cont.) 474
- SPR 0x3F3 Supervisor R/W 475
- DBSR (cont.) 477
- Page 478 of 589 478
- Page 479 of 589 479
- SPR 0x03D Supervisor R/W 480
- SPR 0x016 Supervisor R/W 481
- Decrementer Auto-Reload 482
- Page 482 of 589 482
- DNV0–DNV3 483
- DTV0–DTV3 484
- DVC1–DVC2 485
- SPR 0x398 Supervisor R/W 486
- SPR 0x03E Supervisor R/W 487
- ESR (cont.) 488
- GPR0–GPR31 489
- IAC1–IAC4 490
- Page 491 of 589 491
- Page 492 of 589 492
- Page 493 of 589 493
- INV0–INV3 494
- ITV0–ITV3 495
- SPR 0x399 Supervisor R/W 496
- IVOR0–IVOR15 497
- SPR 0x03F Supervisor R/W 498
- SPR 0x008 User R/W 499
- Machine Check Status Register 500
- Page 500 of 589 500
- SPR 0x23A Supervisor R/W 501
- SPR 0x23B Supervisor R/W 502
- SPR 0x3B2 Supervisor R/W 503
- Supervisor R/W 504
- MSR (cont.) 505
- SPR 0x030 Supervisor R/W 506
- Page 507 of 589 507
- Processor Version Register 508
- Page 508 of 589 508
- SPR 39B Supervisor Read-Only 509
- SPRG0–SPRG7 510
- SPR 0x01A Supervisor R/W 511
- SPR 0x01B Supervisor R/W 512
- See Time Base on page 209 513
- Timer Control Register 515
- Page 515 of 589 515
- Timer Status Register 516
- Page 516 of 589 516
- SPR 0x100 (User R/W) 517
- Integer Exception Register 518
- Page 518 of 589 518
- A.1 Instruction Formats 519
- A.1.1 Instruction Fields 520
- Page 521 of 589 521
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- A.1.2.5 X-Form 523
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- Page 533 of 589 533
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- Page 535 of 589 535
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- Page 537 of 589 537
- ←¬((RS) ⊕ (RB)) 538
- Page 539 of 589 539
- Page 540 of 589 540
- Page 541 of 589 541
- Page 542 of 589 542
- ← (DCR(DCRN)) 543
- ← (MSR) 543
- ← (SPR(SPRN)) 544
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- September 12, 2002 571
- H, I, J, K 578
- Page 588 of 583 588
- Revision Log 589
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