1 /* 2 * ARM virtual CPU header 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #ifndef ARM_CPU_H 21 #define ARM_CPU_H 22 23 #include "kvm-consts.h" 24 #include "qemu/cpu-float.h" 25 #include "hw/registerfields.h" 26 #include "cpu-qom.h" 27 #include "exec/cpu-defs.h" 28 #include "qapi/qapi-types-common.h" 29 #include "target/arm/multiprocessing.h" 30 #include "target/arm/gtimer.h" 31 32 /* ARM processors have a weak memory model */ 33 #define TCG_GUEST_DEFAULT_MO (0) 34 35 #ifdef TARGET_AARCH64 36 #define KVM_HAVE_MCE_INJECTION 1 37 #endif 38 39 #define EXCP_UDEF 1 /* undefined instruction */ 40 #define EXCP_SWI 2 /* software interrupt */ 41 #define EXCP_PREFETCH_ABORT 3 42 #define EXCP_DATA_ABORT 4 43 #define EXCP_IRQ 5 44 #define EXCP_FIQ 6 45 #define EXCP_BKPT 7 46 #define EXCP_EXCEPTION_EXIT 8 /* Return from v7M exception. */ 47 #define EXCP_KERNEL_TRAP 9 /* Jumped to kernel code page. */ 48 #define EXCP_HVC 11 /* HyperVisor Call */ 49 #define EXCP_HYP_TRAP 12 50 #define EXCP_SMC 13 /* Secure Monitor Call */ 51 #define EXCP_VIRQ 14 52 #define EXCP_VFIQ 15 53 #define EXCP_SEMIHOST 16 /* semihosting call */ 54 #define EXCP_NOCP 17 /* v7M NOCP UsageFault */ 55 #define EXCP_INVSTATE 18 /* v7M INVSTATE UsageFault */ 56 #define EXCP_STKOF 19 /* v8M STKOF UsageFault */ 57 #define EXCP_LAZYFP 20 /* v7M fault during lazy FP stacking */ 58 #define EXCP_LSERR 21 /* v8M LSERR SecureFault */ 59 #define EXCP_UNALIGNED 22 /* v7M UNALIGNED UsageFault */ 60 #define EXCP_DIVBYZERO 23 /* v7M DIVBYZERO UsageFault */ 61 #define EXCP_VSERR 24 62 #define EXCP_GPC 25 /* v9 Granule Protection Check Fault */ 63 /* NB: add new EXCP_ defines to the array in arm_log_exception() too */ 64 65 #define ARMV7M_EXCP_RESET 1 66 #define ARMV7M_EXCP_NMI 2 67 #define ARMV7M_EXCP_HARD 3 68 #define ARMV7M_EXCP_MEM 4 69 #define ARMV7M_EXCP_BUS 5 70 #define ARMV7M_EXCP_USAGE 6 71 #define ARMV7M_EXCP_SECURE 7 72 #define ARMV7M_EXCP_SVC 11 73 #define ARMV7M_EXCP_DEBUG 12 74 #define ARMV7M_EXCP_PENDSV 14 75 #define ARMV7M_EXCP_SYSTICK 15 76 77 /* ARM-specific interrupt pending bits. */ 78 #define CPU_INTERRUPT_FIQ CPU_INTERRUPT_TGT_EXT_1 79 #define CPU_INTERRUPT_VIRQ CPU_INTERRUPT_TGT_EXT_2 80 #define CPU_INTERRUPT_VFIQ CPU_INTERRUPT_TGT_EXT_3 81 #define CPU_INTERRUPT_VSERR CPU_INTERRUPT_TGT_INT_0 82 83 /* The usual mapping for an AArch64 system register to its AArch32 84 * counterpart is for the 32 bit world to have access to the lower 85 * half only (with writes leaving the upper half untouched). It's 86 * therefore useful to be able to pass TCG the offset of the least 87 * significant half of a uint64_t struct member. 88 */ 89 #if HOST_BIG_ENDIAN 90 #define offsetoflow32(S, M) (offsetof(S, M) + sizeof(uint32_t)) 91 #define offsetofhigh32(S, M) offsetof(S, M) 92 #else 93 #define offsetoflow32(S, M) offsetof(S, M) 94 #define offsetofhigh32(S, M) (offsetof(S, M) + sizeof(uint32_t)) 95 #endif 96 97 /* ARM-specific extra insn start words: 98 * 1: Conditional execution bits 99 * 2: Partial exception syndrome for data aborts 100 */ 101 #define TARGET_INSN_START_EXTRA_WORDS 2 102 103 /* The 2nd extra word holding syndrome info for data aborts does not use 104 * the upper 6 bits nor the lower 13 bits. We mask and shift it down to 105 * help the sleb128 encoder do a better job. 106 * When restoring the CPU state, we shift it back up. 107 */ 108 #define ARM_INSN_START_WORD2_MASK ((1 << 26) - 1) 109 #define ARM_INSN_START_WORD2_SHIFT 13 110 111 /* We currently assume float and double are IEEE single and double 112 precision respectively. 113 Doing runtime conversions is tricky because VFP registers may contain 114 integer values (eg. as the result of a FTOSI instruction). 115 s<2n> maps to the least significant half of d<n> 116 s<2n+1> maps to the most significant half of d<n> 117 */ 118 119 /** 120 * DynamicGDBXMLInfo: 121 * @desc: Contains the XML descriptions. 122 * @num: Number of the registers in this XML seen by GDB. 123 * @data: A union with data specific to the set of registers 124 * @cpregs_keys: Array that contains the corresponding Key of 125 * a given cpreg with the same order of the cpreg 126 * in the XML description. 127 */ 128 typedef struct DynamicGDBXMLInfo { 129 char *desc; 130 int num; 131 union { 132 struct { 133 uint32_t *keys; 134 } cpregs; 135 } data; 136 } DynamicGDBXMLInfo; 137 138 /* CPU state for each instance of a generic timer (in cp15 c14) */ 139 typedef struct ARMGenericTimer { 140 uint64_t cval; /* Timer CompareValue register */ 141 uint64_t ctl; /* Timer Control register */ 142 } ARMGenericTimer; 143 144 #define VTCR_NSW (1u << 29) 145 #define VTCR_NSA (1u << 30) 146 #define VSTCR_SW VTCR_NSW 147 #define VSTCR_SA VTCR_NSA 148 149 /* Define a maximum sized vector register. 150 * For 32-bit, this is a 128-bit NEON/AdvSIMD register. 151 * For 64-bit, this is a 2048-bit SVE register. 152 * 153 * Note that the mapping between S, D, and Q views of the register bank 154 * differs between AArch64 and AArch32. 155 * In AArch32: 156 * Qn = regs[n].d[1]:regs[n].d[0] 157 * Dn = regs[n / 2].d[n & 1] 158 * Sn = regs[n / 4].d[n % 4 / 2], 159 * bits 31..0 for even n, and bits 63..32 for odd n 160 * (and regs[16] to regs[31] are inaccessible) 161 * In AArch64: 162 * Zn = regs[n].d[*] 163 * Qn = regs[n].d[1]:regs[n].d[0] 164 * Dn = regs[n].d[0] 165 * Sn = regs[n].d[0] bits 31..0 166 * Hn = regs[n].d[0] bits 15..0 167 * 168 * This corresponds to the architecturally defined mapping between 169 * the two execution states, and means we do not need to explicitly 170 * map these registers when changing states. 171 * 172 * Align the data for use with TCG host vector operations. 173 */ 174 175 #ifdef TARGET_AARCH64 176 # define ARM_MAX_VQ 16 177 #else 178 # define ARM_MAX_VQ 1 179 #endif 180 181 typedef struct ARMVectorReg { 182 uint64_t d[2 * ARM_MAX_VQ] QEMU_ALIGNED(16); 183 } ARMVectorReg; 184 185 #ifdef TARGET_AARCH64 186 /* In AArch32 mode, predicate registers do not exist at all. */ 187 typedef struct ARMPredicateReg { 188 uint64_t p[DIV_ROUND_UP(2 * ARM_MAX_VQ, 8)] QEMU_ALIGNED(16); 189 } ARMPredicateReg; 190 191 /* In AArch32 mode, PAC keys do not exist at all. */ 192 typedef struct ARMPACKey { 193 uint64_t lo, hi; 194 } ARMPACKey; 195 #endif 196 197 /* See the commentary above the TBFLAG field definitions. */ 198 typedef struct CPUARMTBFlags { 199 uint32_t flags; 200 target_ulong flags2; 201 } CPUARMTBFlags; 202 203 typedef struct ARMMMUFaultInfo ARMMMUFaultInfo; 204 205 typedef struct NVICState NVICState; 206 207 typedef struct CPUArchState { 208 /* Regs for current mode. */ 209 uint32_t regs[16]; 210 211 /* 32/64 switch only happens when taking and returning from 212 * exceptions so the overlap semantics are taken care of then 213 * instead of having a complicated union. 214 */ 215 /* Regs for A64 mode. */ 216 uint64_t xregs[32]; 217 uint64_t pc; 218 /* PSTATE isn't an architectural register for ARMv8. However, it is 219 * convenient for us to assemble the underlying state into a 32 bit format 220 * identical to the architectural format used for the SPSR. (This is also 221 * what the Linux kernel's 'pstate' field in signal handlers and KVM's 222 * 'pstate' register are.) Of the PSTATE bits: 223 * NZCV are kept in the split out env->CF/VF/NF/ZF, (which have the same 224 * semantics as for AArch32, as described in the comments on each field) 225 * nRW (also known as M[4]) is kept, inverted, in env->aarch64 226 * DAIF (exception masks) are kept in env->daif 227 * BTYPE is kept in env->btype 228 * SM and ZA are kept in env->svcr 229 * all other bits are stored in their correct places in env->pstate 230 */ 231 uint32_t pstate; 232 bool aarch64; /* True if CPU is in aarch64 state; inverse of PSTATE.nRW */ 233 bool thumb; /* True if CPU is in thumb mode; cpsr[5] */ 234 235 /* Cached TBFLAGS state. See below for which bits are included. */ 236 CPUARMTBFlags hflags; 237 238 /* Frequently accessed CPSR bits are stored separately for efficiency. 239 This contains all the other bits. Use cpsr_{read,write} to access 240 the whole CPSR. */ 241 uint32_t uncached_cpsr; 242 uint32_t spsr; 243 244 /* Banked registers. */ 245 uint64_t banked_spsr[8]; 246 uint32_t banked_r13[8]; 247 uint32_t banked_r14[8]; 248 249 /* These hold r8-r12. */ 250 uint32_t usr_regs[5]; 251 uint32_t fiq_regs[5]; 252 253 /* cpsr flag cache for faster execution */ 254 uint32_t CF; /* 0 or 1 */ 255 uint32_t VF; /* V is the bit 31. All other bits are undefined */ 256 uint32_t NF; /* N is bit 31. All other bits are undefined. */ 257 uint32_t ZF; /* Z set if zero. */ 258 uint32_t QF; /* 0 or 1 */ 259 uint32_t GE; /* cpsr[19:16] */ 260 uint32_t condexec_bits; /* IT bits. cpsr[15:10,26:25]. */ 261 uint32_t btype; /* BTI branch type. spsr[11:10]. */ 262 uint64_t daif; /* exception masks, in the bits they are in PSTATE */ 263 uint64_t svcr; /* PSTATE.{SM,ZA} in the bits they are in SVCR */ 264 265 uint64_t elr_el[4]; /* AArch64 exception link regs */ 266 uint64_t sp_el[4]; /* AArch64 banked stack pointers */ 267 268 /* System control coprocessor (cp15) */ 269 struct { 270 uint32_t c0_cpuid; 271 union { /* Cache size selection */ 272 struct { 273 uint64_t _unused_csselr0; 274 uint64_t csselr_ns; 275 uint64_t _unused_csselr1; 276 uint64_t csselr_s; 277 }; 278 uint64_t csselr_el[4]; 279 }; 280 union { /* System control register. */ 281 struct { 282 uint64_t _unused_sctlr; 283 uint64_t sctlr_ns; 284 uint64_t hsctlr; 285 uint64_t sctlr_s; 286 }; 287 uint64_t sctlr_el[4]; 288 }; 289 uint64_t vsctlr; /* Virtualization System control register. */ 290 uint64_t cpacr_el1; /* Architectural feature access control register */ 291 uint64_t cptr_el[4]; /* ARMv8 feature trap registers */ 292 uint32_t c1_xscaleauxcr; /* XScale auxiliary control register. */ 293 uint64_t sder; /* Secure debug enable register. */ 294 uint32_t nsacr; /* Non-secure access control register. */ 295 union { /* MMU translation table base 0. */ 296 struct { 297 uint64_t _unused_ttbr0_0; 298 uint64_t ttbr0_ns; 299 uint64_t _unused_ttbr0_1; 300 uint64_t ttbr0_s; 301 }; 302 uint64_t ttbr0_el[4]; 303 }; 304 union { /* MMU translation table base 1. */ 305 struct { 306 uint64_t _unused_ttbr1_0; 307 uint64_t ttbr1_ns; 308 uint64_t _unused_ttbr1_1; 309 uint64_t ttbr1_s; 310 }; 311 uint64_t ttbr1_el[4]; 312 }; 313 uint64_t vttbr_el2; /* Virtualization Translation Table Base. */ 314 uint64_t vsttbr_el2; /* Secure Virtualization Translation Table. */ 315 /* MMU translation table base control. */ 316 uint64_t tcr_el[4]; 317 uint64_t vtcr_el2; /* Virtualization Translation Control. */ 318 uint64_t vstcr_el2; /* Secure Virtualization Translation Control. */ 319 uint32_t c2_data; /* MPU data cacheable bits. */ 320 uint32_t c2_insn; /* MPU instruction cacheable bits. */ 321 union { /* MMU domain access control register 322 * MPU write buffer control. 323 */ 324 struct { 325 uint64_t dacr_ns; 326 uint64_t dacr_s; 327 }; 328 struct { 329 uint64_t dacr32_el2; 330 }; 331 }; 332 uint32_t pmsav5_data_ap; /* PMSAv5 MPU data access permissions */ 333 uint32_t pmsav5_insn_ap; /* PMSAv5 MPU insn access permissions */ 334 uint64_t hcr_el2; /* Hypervisor configuration register */ 335 uint64_t hcrx_el2; /* Extended Hypervisor configuration register */ 336 uint64_t scr_el3; /* Secure configuration register. */ 337 union { /* Fault status registers. */ 338 struct { 339 uint64_t ifsr_ns; 340 uint64_t ifsr_s; 341 }; 342 struct { 343 uint64_t ifsr32_el2; 344 }; 345 }; 346 union { 347 struct { 348 uint64_t _unused_dfsr; 349 uint64_t dfsr_ns; 350 uint64_t hsr; 351 uint64_t dfsr_s; 352 }; 353 uint64_t esr_el[4]; 354 }; 355 uint32_t c6_region[8]; /* MPU base/size registers. */ 356 union { /* Fault address registers. */ 357 struct { 358 uint64_t _unused_far0; 359 #if HOST_BIG_ENDIAN 360 uint32_t ifar_ns; 361 uint32_t dfar_ns; 362 uint32_t ifar_s; 363 uint32_t dfar_s; 364 #else 365 uint32_t dfar_ns; 366 uint32_t ifar_ns; 367 uint32_t dfar_s; 368 uint32_t ifar_s; 369 #endif 370 uint64_t _unused_far3; 371 }; 372 uint64_t far_el[4]; 373 }; 374 uint64_t hpfar_el2; 375 uint64_t hstr_el2; 376 union { /* Translation result. */ 377 struct { 378 uint64_t _unused_par_0; 379 uint64_t par_ns; 380 uint64_t _unused_par_1; 381 uint64_t par_s; 382 }; 383 uint64_t par_el[4]; 384 }; 385 386 uint32_t c9_insn; /* Cache lockdown registers. */ 387 uint32_t c9_data; 388 uint64_t c9_pmcr; /* performance monitor control register */ 389 uint64_t c9_pmcnten; /* perf monitor counter enables */ 390 uint64_t c9_pmovsr; /* perf monitor overflow status */ 391 uint64_t c9_pmuserenr; /* perf monitor user enable */ 392 uint64_t c9_pmselr; /* perf monitor counter selection register */ 393 uint64_t c9_pminten; /* perf monitor interrupt enables */ 394 union { /* Memory attribute redirection */ 395 struct { 396 #if HOST_BIG_ENDIAN 397 uint64_t _unused_mair_0; 398 uint32_t mair1_ns; 399 uint32_t mair0_ns; 400 uint64_t _unused_mair_1; 401 uint32_t mair1_s; 402 uint32_t mair0_s; 403 #else 404 uint64_t _unused_mair_0; 405 uint32_t mair0_ns; 406 uint32_t mair1_ns; 407 uint64_t _unused_mair_1; 408 uint32_t mair0_s; 409 uint32_t mair1_s; 410 #endif 411 }; 412 uint64_t mair_el[4]; 413 }; 414 union { /* vector base address register */ 415 struct { 416 uint64_t _unused_vbar; 417 uint64_t vbar_ns; 418 uint64_t hvbar; 419 uint64_t vbar_s; 420 }; 421 uint64_t vbar_el[4]; 422 }; 423 uint32_t mvbar; /* (monitor) vector base address register */ 424 uint64_t rvbar; /* rvbar sampled from rvbar property at reset */ 425 struct { /* FCSE PID. */ 426 uint32_t fcseidr_ns; 427 uint32_t fcseidr_s; 428 }; 429 union { /* Context ID. */ 430 struct { 431 uint64_t _unused_contextidr_0; 432 uint64_t contextidr_ns; 433 uint64_t _unused_contextidr_1; 434 uint64_t contextidr_s; 435 }; 436 uint64_t contextidr_el[4]; 437 }; 438 union { /* User RW Thread register. */ 439 struct { 440 uint64_t tpidrurw_ns; 441 uint64_t tpidrprw_ns; 442 uint64_t htpidr; 443 uint64_t _tpidr_el3; 444 }; 445 uint64_t tpidr_el[4]; 446 }; 447 uint64_t tpidr2_el0; 448 /* The secure banks of these registers don't map anywhere */ 449 uint64_t tpidrurw_s; 450 uint64_t tpidrprw_s; 451 uint64_t tpidruro_s; 452 453 union { /* User RO Thread register. */ 454 uint64_t tpidruro_ns; 455 uint64_t tpidrro_el[1]; 456 }; 457 uint64_t c14_cntfrq; /* Counter Frequency register */ 458 uint64_t c14_cntkctl; /* Timer Control register */ 459 uint64_t cnthctl_el2; /* Counter/Timer Hyp Control register */ 460 uint64_t cntvoff_el2; /* Counter Virtual Offset register */ 461 ARMGenericTimer c14_timer[NUM_GTIMERS]; 462 uint32_t c15_cpar; /* XScale Coprocessor Access Register */ 463 uint32_t c15_ticonfig; /* TI925T configuration byte. */ 464 uint32_t c15_i_max; /* Maximum D-cache dirty line index. */ 465 uint32_t c15_i_min; /* Minimum D-cache dirty line index. */ 466 uint32_t c15_threadid; /* TI debugger thread-ID. */ 467 uint32_t c15_config_base_address; /* SCU base address. */ 468 uint32_t c15_diagnostic; /* diagnostic register */ 469 uint32_t c15_power_diagnostic; 470 uint32_t c15_power_control; /* power control */ 471 uint64_t dbgbvr[16]; /* breakpoint value registers */ 472 uint64_t dbgbcr[16]; /* breakpoint control registers */ 473 uint64_t dbgwvr[16]; /* watchpoint value registers */ 474 uint64_t dbgwcr[16]; /* watchpoint control registers */ 475 uint64_t dbgclaim; /* DBGCLAIM bits */ 476 uint64_t mdscr_el1; 477 uint64_t oslsr_el1; /* OS Lock Status */ 478 uint64_t osdlr_el1; /* OS DoubleLock status */ 479 uint64_t mdcr_el2; 480 uint64_t mdcr_el3; 481 /* Stores the architectural value of the counter *the last time it was 482 * updated* by pmccntr_op_start. Accesses should always be surrounded 483 * by pmccntr_op_start/pmccntr_op_finish to guarantee the latest 484 * architecturally-correct value is being read/set. 485 */ 486 uint64_t c15_ccnt; 487 /* Stores the delta between the architectural value and the underlying 488 * cycle count during normal operation. It is used to update c15_ccnt 489 * to be the correct architectural value before accesses. During 490 * accesses, c15_ccnt_delta contains the underlying count being used 491 * for the access, after which it reverts to the delta value in 492 * pmccntr_op_finish. 493 */ 494 uint64_t c15_ccnt_delta; 495 uint64_t c14_pmevcntr[31]; 496 uint64_t c14_pmevcntr_delta[31]; 497 uint64_t c14_pmevtyper[31]; 498 uint64_t pmccfiltr_el0; /* Performance Monitor Filter Register */ 499 uint64_t vpidr_el2; /* Virtualization Processor ID Register */ 500 uint64_t vmpidr_el2; /* Virtualization Multiprocessor ID Register */ 501 uint64_t tfsr_el[4]; /* tfsre0_el1 is index 0. */ 502 uint64_t gcr_el1; 503 uint64_t rgsr_el1; 504 505 /* Minimal RAS registers */ 506 uint64_t disr_el1; 507 uint64_t vdisr_el2; 508 uint64_t vsesr_el2; 509 510 /* 511 * Fine-Grained Trap registers. We store these as arrays so the 512 * access checking code doesn't have to manually select 513 * HFGRTR_EL2 vs HFDFGRTR_EL2 etc when looking up the bit to test. 514 * FEAT_FGT2 will add more elements to these arrays. 515 */ 516 uint64_t fgt_read[2]; /* HFGRTR, HDFGRTR */ 517 uint64_t fgt_write[2]; /* HFGWTR, HDFGWTR */ 518 uint64_t fgt_exec[1]; /* HFGITR */ 519 520 /* RME registers */ 521 uint64_t gpccr_el3; 522 uint64_t gptbr_el3; 523 uint64_t mfar_el3; 524 525 /* NV2 register */ 526 uint64_t vncr_el2; 527 } cp15; 528 529 struct { 530 /* M profile has up to 4 stack pointers: 531 * a Main Stack Pointer and a Process Stack Pointer for each 532 * of the Secure and Non-Secure states. (If the CPU doesn't support 533 * the security extension then it has only two SPs.) 534 * In QEMU we always store the currently active SP in regs[13], 535 * and the non-active SP for the current security state in 536 * v7m.other_sp. The stack pointers for the inactive security state 537 * are stored in other_ss_msp and other_ss_psp. 538 * switch_v7m_security_state() is responsible for rearranging them 539 * when we change security state. 540 */ 541 uint32_t other_sp; 542 uint32_t other_ss_msp; 543 uint32_t other_ss_psp; 544 uint32_t vecbase[M_REG_NUM_BANKS]; 545 uint32_t basepri[M_REG_NUM_BANKS]; 546 uint32_t control[M_REG_NUM_BANKS]; 547 uint32_t ccr[M_REG_NUM_BANKS]; /* Configuration and Control */ 548 uint32_t cfsr[M_REG_NUM_BANKS]; /* Configurable Fault Status */ 549 uint32_t hfsr; /* HardFault Status */ 550 uint32_t dfsr; /* Debug Fault Status Register */ 551 uint32_t sfsr; /* Secure Fault Status Register */ 552 uint32_t mmfar[M_REG_NUM_BANKS]; /* MemManage Fault Address */ 553 uint32_t bfar; /* BusFault Address */ 554 uint32_t sfar; /* Secure Fault Address Register */ 555 unsigned mpu_ctrl[M_REG_NUM_BANKS]; /* MPU_CTRL */ 556 int exception; 557 uint32_t primask[M_REG_NUM_BANKS]; 558 uint32_t faultmask[M_REG_NUM_BANKS]; 559 uint32_t aircr; /* only holds r/w state if security extn implemented */ 560 uint32_t secure; /* Is CPU in Secure state? (not guest visible) */ 561 uint32_t csselr[M_REG_NUM_BANKS]; 562 uint32_t scr[M_REG_NUM_BANKS]; 563 uint32_t msplim[M_REG_NUM_BANKS]; 564 uint32_t psplim[M_REG_NUM_BANKS]; 565 uint32_t fpcar[M_REG_NUM_BANKS]; 566 uint32_t fpccr[M_REG_NUM_BANKS]; 567 uint32_t fpdscr[M_REG_NUM_BANKS]; 568 uint32_t cpacr[M_REG_NUM_BANKS]; 569 uint32_t nsacr; 570 uint32_t ltpsize; 571 uint32_t vpr; 572 } v7m; 573 574 /* Information associated with an exception about to be taken: 575 * code which raises an exception must set cs->exception_index and 576 * the relevant parts of this structure; the cpu_do_interrupt function 577 * will then set the guest-visible registers as part of the exception 578 * entry process. 579 */ 580 struct { 581 uint32_t syndrome; /* AArch64 format syndrome register */ 582 uint32_t fsr; /* AArch32 format fault status register info */ 583 uint64_t vaddress; /* virtual addr associated with exception, if any */ 584 uint32_t target_el; /* EL the exception should be targeted for */ 585 /* If we implement EL2 we will also need to store information 586 * about the intermediate physical address for stage 2 faults. 587 */ 588 } exception; 589 590 /* Information associated with an SError */ 591 struct { 592 uint8_t pending; 593 uint8_t has_esr; 594 uint64_t esr; 595 } serror; 596 597 uint8_t ext_dabt_raised; /* Tracking/verifying injection of ext DABT */ 598 599 /* State of our input IRQ/FIQ/VIRQ/VFIQ lines */ 600 uint32_t irq_line_state; 601 602 /* Thumb-2 EE state. */ 603 uint32_t teecr; 604 uint32_t teehbr; 605 606 /* VFP coprocessor state. */ 607 struct { 608 ARMVectorReg zregs[32]; 609 610 #ifdef TARGET_AARCH64 611 /* Store FFR as pregs[16] to make it easier to treat as any other. */ 612 #define FFR_PRED_NUM 16 613 ARMPredicateReg pregs[17]; 614 /* Scratch space for aa64 sve predicate temporary. */ 615 ARMPredicateReg preg_tmp; 616 #endif 617 618 /* We store these fpcsr fields separately for convenience. */ 619 uint32_t qc[4] QEMU_ALIGNED(16); 620 int vec_len; 621 int vec_stride; 622 623 uint32_t xregs[16]; 624 625 /* Scratch space for aa32 neon expansion. */ 626 uint32_t scratch[8]; 627 628 /* There are a number of distinct float control structures: 629 * 630 * fp_status: is the "normal" fp status. 631 * fp_status_fp16: used for half-precision calculations 632 * standard_fp_status : the ARM "Standard FPSCR Value" 633 * standard_fp_status_fp16 : used for half-precision 634 * calculations with the ARM "Standard FPSCR Value" 635 * 636 * Half-precision operations are governed by a separate 637 * flush-to-zero control bit in FPSCR:FZ16. We pass a separate 638 * status structure to control this. 639 * 640 * The "Standard FPSCR", ie default-NaN, flush-to-zero, 641 * round-to-nearest and is used by any operations (generally 642 * Neon) which the architecture defines as controlled by the 643 * standard FPSCR value rather than the FPSCR. 644 * 645 * The "standard FPSCR but for fp16 ops" is needed because 646 * the "standard FPSCR" tracks the FPSCR.FZ16 bit rather than 647 * using a fixed value for it. 648 * 649 * To avoid having to transfer exception bits around, we simply 650 * say that the FPSCR cumulative exception flags are the logical 651 * OR of the flags in the four fp statuses. This relies on the 652 * only thing which needs to read the exception flags being 653 * an explicit FPSCR read. 654 */ 655 float_status fp_status; 656 float_status fp_status_f16; 657 float_status standard_fp_status; 658 float_status standard_fp_status_f16; 659 660 uint64_t zcr_el[4]; /* ZCR_EL[1-3] */ 661 uint64_t smcr_el[4]; /* SMCR_EL[1-3] */ 662 } vfp; 663 664 uint64_t exclusive_addr; 665 uint64_t exclusive_val; 666 /* 667 * Contains the 'val' for the second 64-bit register of LDXP, which comes 668 * from the higher address, not the high part of a complete 128-bit value. 669 * In some ways it might be more convenient to record the exclusive value 670 * as the low and high halves of a 128 bit data value, but the current 671 * semantics of these fields are baked into the migration format. 672 */ 673 uint64_t exclusive_high; 674 675 /* iwMMXt coprocessor state. */ 676 struct { 677 uint64_t regs[16]; 678 uint64_t val; 679 680 uint32_t cregs[16]; 681 } iwmmxt; 682 683 #ifdef TARGET_AARCH64 684 struct { 685 ARMPACKey apia; 686 ARMPACKey apib; 687 ARMPACKey apda; 688 ARMPACKey apdb; 689 ARMPACKey apga; 690 } keys; 691 692 uint64_t scxtnum_el[4]; 693 694 /* 695 * SME ZA storage -- 256 x 256 byte array, with bytes in host word order, 696 * as we do with vfp.zregs[]. This corresponds to the architectural ZA 697 * array, where ZA[N] is in the least-significant bytes of env->zarray[N]. 698 * When SVL is less than the architectural maximum, the accessible 699 * storage is restricted, such that if the SVL is X bytes the guest can 700 * see only the bottom X elements of zarray[], and only the least 701 * significant X bytes of each element of the array. (In other words, 702 * the observable part is always square.) 703 * 704 * The ZA storage can also be considered as a set of square tiles of 705 * elements of different sizes. The mapping from tiles to the ZA array 706 * is architecturally defined, such that for tiles of elements of esz 707 * bytes, the Nth row (or "horizontal slice") of tile T is in 708 * ZA[T + N * esz]. Note that this means that each tile is not contiguous 709 * in the ZA storage, because its rows are striped through the ZA array. 710 * 711 * Because this is so large, keep this toward the end of the reset area, 712 * to keep the offsets into the rest of the structure smaller. 713 */ 714 ARMVectorReg zarray[ARM_MAX_VQ * 16]; 715 #endif 716 717 struct CPUBreakpoint *cpu_breakpoint[16]; 718 struct CPUWatchpoint *cpu_watchpoint[16]; 719 720 /* Optional fault info across tlb lookup. */ 721 ARMMMUFaultInfo *tlb_fi; 722 723 /* Fields up to this point are cleared by a CPU reset */ 724 struct {} end_reset_fields; 725 726 /* Fields after this point are preserved across CPU reset. */ 727 728 /* Internal CPU feature flags. */ 729 uint64_t features; 730 731 /* PMSAv7 MPU */ 732 struct { 733 uint32_t *drbar; 734 uint32_t *drsr; 735 uint32_t *dracr; 736 uint32_t rnr[M_REG_NUM_BANKS]; 737 } pmsav7; 738 739 /* PMSAv8 MPU */ 740 struct { 741 /* The PMSAv8 implementation also shares some PMSAv7 config 742 * and state: 743 * pmsav7.rnr (region number register) 744 * pmsav7_dregion (number of configured regions) 745 */ 746 uint32_t *rbar[M_REG_NUM_BANKS]; 747 uint32_t *rlar[M_REG_NUM_BANKS]; 748 uint32_t *hprbar; 749 uint32_t *hprlar; 750 uint32_t mair0[M_REG_NUM_BANKS]; 751 uint32_t mair1[M_REG_NUM_BANKS]; 752 uint32_t hprselr; 753 } pmsav8; 754 755 /* v8M SAU */ 756 struct { 757 uint32_t *rbar; 758 uint32_t *rlar; 759 uint32_t rnr; 760 uint32_t ctrl; 761 } sau; 762 763 #if !defined(CONFIG_USER_ONLY) 764 NVICState *nvic; 765 const struct arm_boot_info *boot_info; 766 /* Store GICv3CPUState to access from this struct */ 767 void *gicv3state; 768 #else /* CONFIG_USER_ONLY */ 769 /* For usermode syscall translation. */ 770 bool eabi; 771 #endif /* CONFIG_USER_ONLY */ 772 773 #ifdef TARGET_TAGGED_ADDRESSES 774 /* Linux syscall tagged address support */ 775 bool tagged_addr_enable; 776 #endif 777 } CPUARMState; 778 779 static inline void set_feature(CPUARMState *env, int feature) 780 { 781 env->features |= 1ULL << feature; 782 } 783 784 static inline void unset_feature(CPUARMState *env, int feature) 785 { 786 env->features &= ~(1ULL << feature); 787 } 788 789 /** 790 * ARMELChangeHookFn: 791 * type of a function which can be registered via arm_register_el_change_hook() 792 * to get callbacks when the CPU changes its exception level or mode. 793 */ 794 typedef void ARMELChangeHookFn(ARMCPU *cpu, void *opaque); 795 typedef struct ARMELChangeHook ARMELChangeHook; 796 struct ARMELChangeHook { 797 ARMELChangeHookFn *hook; 798 void *opaque; 799 QLIST_ENTRY(ARMELChangeHook) node; 800 }; 801 802 /* These values map onto the return values for 803 * QEMU_PSCI_0_2_FN_AFFINITY_INFO */ 804 typedef enum ARMPSCIState { 805 PSCI_ON = 0, 806 PSCI_OFF = 1, 807 PSCI_ON_PENDING = 2 808 } ARMPSCIState; 809 810 typedef struct ARMISARegisters ARMISARegisters; 811 812 /* 813 * In map, each set bit is a supported vector length of (bit-number + 1) * 16 814 * bytes, i.e. each bit number + 1 is the vector length in quadwords. 815 * 816 * While processing properties during initialization, corresponding init bits 817 * are set for bits in sve_vq_map that have been set by properties. 818 * 819 * Bits set in supported represent valid vector lengths for the CPU type. 820 */ 821 typedef struct { 822 uint32_t map, init, supported; 823 } ARMVQMap; 824 825 /** 826 * ARMCPU: 827 * @env: #CPUARMState 828 * 829 * An ARM CPU core. 830 */ 831 struct ArchCPU { 832 CPUState parent_obj; 833 834 CPUARMState env; 835 836 /* Coprocessor information */ 837 GHashTable *cp_regs; 838 /* For marshalling (mostly coprocessor) register state between the 839 * kernel and QEMU (for KVM) and between two QEMUs (for migration), 840 * we use these arrays. 841 */ 842 /* List of register indexes managed via these arrays; (full KVM style 843 * 64 bit indexes, not CPRegInfo 32 bit indexes) 844 */ 845 uint64_t *cpreg_indexes; 846 /* Values of the registers (cpreg_indexes[i]'s value is cpreg_values[i]) */ 847 uint64_t *cpreg_values; 848 /* Length of the indexes, values, reset_values arrays */ 849 int32_t cpreg_array_len; 850 /* These are used only for migration: incoming data arrives in 851 * these fields and is sanity checked in post_load before copying 852 * to the working data structures above. 853 */ 854 uint64_t *cpreg_vmstate_indexes; 855 uint64_t *cpreg_vmstate_values; 856 int32_t cpreg_vmstate_array_len; 857 858 DynamicGDBXMLInfo dyn_sysreg_xml; 859 DynamicGDBXMLInfo dyn_svereg_xml; 860 DynamicGDBXMLInfo dyn_m_systemreg_xml; 861 DynamicGDBXMLInfo dyn_m_secextreg_xml; 862 863 /* Timers used by the generic (architected) timer */ 864 QEMUTimer *gt_timer[NUM_GTIMERS]; 865 /* 866 * Timer used by the PMU. Its state is restored after migration by 867 * pmu_op_finish() - it does not need other handling during migration 868 */ 869 QEMUTimer *pmu_timer; 870 /* GPIO outputs for generic timer */ 871 qemu_irq gt_timer_outputs[NUM_GTIMERS]; 872 /* GPIO output for GICv3 maintenance interrupt signal */ 873 qemu_irq gicv3_maintenance_interrupt; 874 /* GPIO output for the PMU interrupt */ 875 qemu_irq pmu_interrupt; 876 877 /* MemoryRegion to use for secure physical accesses */ 878 MemoryRegion *secure_memory; 879 880 /* MemoryRegion to use for allocation tag accesses */ 881 MemoryRegion *tag_memory; 882 MemoryRegion *secure_tag_memory; 883 884 /* For v8M, pointer to the IDAU interface provided by board/SoC */ 885 Object *idau; 886 887 /* 'compatible' string for this CPU for Linux device trees */ 888 const char *dtb_compatible; 889 890 /* PSCI version for this CPU 891 * Bits[31:16] = Major Version 892 * Bits[15:0] = Minor Version 893 */ 894 uint32_t psci_version; 895 896 /* Current power state, access guarded by BQL */ 897 ARMPSCIState power_state; 898 899 /* CPU has virtualization extension */ 900 bool has_el2; 901 /* CPU has security extension */ 902 bool has_el3; 903 /* CPU has PMU (Performance Monitor Unit) */ 904 bool has_pmu; 905 /* CPU has VFP */ 906 bool has_vfp; 907 /* CPU has 32 VFP registers */ 908 bool has_vfp_d32; 909 /* CPU has Neon */ 910 bool has_neon; 911 /* CPU has M-profile DSP extension */ 912 bool has_dsp; 913 914 /* CPU has memory protection unit */ 915 bool has_mpu; 916 /* PMSAv7 MPU number of supported regions */ 917 uint32_t pmsav7_dregion; 918 /* PMSAv8 MPU number of supported hyp regions */ 919 uint32_t pmsav8r_hdregion; 920 /* v8M SAU number of supported regions */ 921 uint32_t sau_sregion; 922 923 /* PSCI conduit used to invoke PSCI methods 924 * 0 - disabled, 1 - smc, 2 - hvc 925 */ 926 uint32_t psci_conduit; 927 928 /* For v8M, initial value of the Secure VTOR */ 929 uint32_t init_svtor; 930 /* For v8M, initial value of the Non-secure VTOR */ 931 uint32_t init_nsvtor; 932 933 /* [QEMU_]KVM_ARM_TARGET_* constant for this CPU, or 934 * QEMU_KVM_ARM_TARGET_NONE if the kernel doesn't support this CPU type. 935 */ 936 uint32_t kvm_target; 937 938 #ifdef CONFIG_KVM 939 /* KVM init features for this CPU */ 940 uint32_t kvm_init_features[7]; 941 942 /* KVM CPU state */ 943 944 /* KVM virtual time adjustment */ 945 bool kvm_adjvtime; 946 bool kvm_vtime_dirty; 947 uint64_t kvm_vtime; 948 949 /* KVM steal time */ 950 OnOffAuto kvm_steal_time; 951 #endif /* CONFIG_KVM */ 952 953 /* Uniprocessor system with MP extensions */ 954 bool mp_is_up; 955 956 /* True if we tried kvm_arm_host_cpu_features() during CPU instance_init 957 * and the probe failed (so we need to report the error in realize) 958 */ 959 bool host_cpu_probe_failed; 960 961 /* Specify the number of cores in this CPU cluster. Used for the L2CTLR 962 * register. 963 */ 964 int32_t core_count; 965 966 /* The instance init functions for implementation-specific subclasses 967 * set these fields to specify the implementation-dependent values of 968 * various constant registers and reset values of non-constant 969 * registers. 970 * Some of these might become QOM properties eventually. 971 * Field names match the official register names as defined in the 972 * ARMv7AR ARM Architecture Reference Manual. A reset_ prefix 973 * is used for reset values of non-constant registers; no reset_ 974 * prefix means a constant register. 975 * Some of these registers are split out into a substructure that 976 * is shared with the translators to control the ISA. 977 * 978 * Note that if you add an ID register to the ARMISARegisters struct 979 * you need to also update the 32-bit and 64-bit versions of the 980 * kvm_arm_get_host_cpu_features() function to correctly populate the 981 * field by reading the value from the KVM vCPU. 982 */ 983 struct ARMISARegisters { 984 uint32_t id_isar0; 985 uint32_t id_isar1; 986 uint32_t id_isar2; 987 uint32_t id_isar3; 988 uint32_t id_isar4; 989 uint32_t id_isar5; 990 uint32_t id_isar6; 991 uint32_t id_mmfr0; 992 uint32_t id_mmfr1; 993 uint32_t id_mmfr2; 994 uint32_t id_mmfr3; 995 uint32_t id_mmfr4; 996 uint32_t id_mmfr5; 997 uint32_t id_pfr0; 998 uint32_t id_pfr1; 999 uint32_t id_pfr2; 1000 uint32_t mvfr0; 1001 uint32_t mvfr1; 1002 uint32_t mvfr2; 1003 uint32_t id_dfr0; 1004 uint32_t id_dfr1; 1005 uint32_t dbgdidr; 1006 uint32_t dbgdevid; 1007 uint32_t dbgdevid1; 1008 uint64_t id_aa64isar0; 1009 uint64_t id_aa64isar1; 1010 uint64_t id_aa64isar2; 1011 uint64_t id_aa64pfr0; 1012 uint64_t id_aa64pfr1; 1013 uint64_t id_aa64mmfr0; 1014 uint64_t id_aa64mmfr1; 1015 uint64_t id_aa64mmfr2; 1016 uint64_t id_aa64dfr0; 1017 uint64_t id_aa64dfr1; 1018 uint64_t id_aa64zfr0; 1019 uint64_t id_aa64smfr0; 1020 uint64_t reset_pmcr_el0; 1021 } isar; 1022 uint64_t midr; 1023 uint32_t revidr; 1024 uint32_t reset_fpsid; 1025 uint64_t ctr; 1026 uint32_t reset_sctlr; 1027 uint64_t pmceid0; 1028 uint64_t pmceid1; 1029 uint32_t id_afr0; 1030 uint64_t id_aa64afr0; 1031 uint64_t id_aa64afr1; 1032 uint64_t clidr; 1033 uint64_t mp_affinity; /* MP ID without feature bits */ 1034 /* The elements of this array are the CCSIDR values for each cache, 1035 * in the order L1DCache, L1ICache, L2DCache, L2ICache, etc. 1036 */ 1037 uint64_t ccsidr[16]; 1038 uint64_t reset_cbar; 1039 uint32_t reset_auxcr; 1040 bool reset_hivecs; 1041 uint8_t reset_l0gptsz; 1042 1043 /* 1044 * Intermediate values used during property parsing. 1045 * Once finalized, the values should be read from ID_AA64*. 1046 */ 1047 bool prop_pauth; 1048 bool prop_pauth_impdef; 1049 bool prop_pauth_qarma3; 1050 bool prop_lpa2; 1051 1052 /* DCZ blocksize, in log_2(words), ie low 4 bits of DCZID_EL0 */ 1053 uint8_t dcz_blocksize; 1054 /* GM blocksize, in log_2(words), ie low 4 bits of GMID_EL0 */ 1055 uint8_t gm_blocksize; 1056 1057 uint64_t rvbar_prop; /* Property/input signals. */ 1058 1059 /* Configurable aspects of GIC cpu interface (which is part of the CPU) */ 1060 int gic_num_lrs; /* number of list registers */ 1061 int gic_vpribits; /* number of virtual priority bits */ 1062 int gic_vprebits; /* number of virtual preemption bits */ 1063 int gic_pribits; /* number of physical priority bits */ 1064 1065 /* Whether the cfgend input is high (i.e. this CPU should reset into 1066 * big-endian mode). This setting isn't used directly: instead it modifies 1067 * the reset_sctlr value to have SCTLR_B or SCTLR_EE set, depending on the 1068 * architecture version. 1069 */ 1070 bool cfgend; 1071 1072 QLIST_HEAD(, ARMELChangeHook) pre_el_change_hooks; 1073 QLIST_HEAD(, ARMELChangeHook) el_change_hooks; 1074 1075 int32_t node_id; /* NUMA node this CPU belongs to */ 1076 1077 /* Used to synchronize KVM and QEMU in-kernel device levels */ 1078 uint8_t device_irq_level; 1079 1080 /* Used to set the maximum vector length the cpu will support. */ 1081 uint32_t sve_max_vq; 1082 1083 #ifdef CONFIG_USER_ONLY 1084 /* Used to set the default vector length at process start. */ 1085 uint32_t sve_default_vq; 1086 uint32_t sme_default_vq; 1087 #endif 1088 1089 ARMVQMap sve_vq; 1090 ARMVQMap sme_vq; 1091 1092 /* Generic timer counter frequency, in Hz */ 1093 uint64_t gt_cntfrq_hz; 1094 }; 1095 1096 typedef struct ARMCPUInfo { 1097 const char *name; 1098 void (*initfn)(Object *obj); 1099 void (*class_init)(ObjectClass *oc, void *data); 1100 } ARMCPUInfo; 1101 1102 /** 1103 * ARMCPUClass: 1104 * @parent_realize: The parent class' realize handler. 1105 * @parent_phases: The parent class' reset phase handlers. 1106 * 1107 * An ARM CPU model. 1108 */ 1109 struct ARMCPUClass { 1110 CPUClass parent_class; 1111 1112 const ARMCPUInfo *info; 1113 DeviceRealize parent_realize; 1114 ResettablePhases parent_phases; 1115 }; 1116 1117 struct AArch64CPUClass { 1118 ARMCPUClass parent_class; 1119 }; 1120 1121 /* Callback functions for the generic timer's timers. */ 1122 void arm_gt_ptimer_cb(void *opaque); 1123 void arm_gt_vtimer_cb(void *opaque); 1124 void arm_gt_htimer_cb(void *opaque); 1125 void arm_gt_stimer_cb(void *opaque); 1126 void arm_gt_hvtimer_cb(void *opaque); 1127 1128 unsigned int gt_cntfrq_period_ns(ARMCPU *cpu); 1129 void gt_rme_post_el_change(ARMCPU *cpu, void *opaque); 1130 1131 void arm_cpu_post_init(Object *obj); 1132 1133 #define ARM_AFF0_SHIFT 0 1134 #define ARM_AFF0_MASK (0xFFULL << ARM_AFF0_SHIFT) 1135 #define ARM_AFF1_SHIFT 8 1136 #define ARM_AFF1_MASK (0xFFULL << ARM_AFF1_SHIFT) 1137 #define ARM_AFF2_SHIFT 16 1138 #define ARM_AFF2_MASK (0xFFULL << ARM_AFF2_SHIFT) 1139 #define ARM_AFF3_SHIFT 32 1140 #define ARM_AFF3_MASK (0xFFULL << ARM_AFF3_SHIFT) 1141 #define ARM_DEFAULT_CPUS_PER_CLUSTER 8 1142 1143 #define ARM32_AFFINITY_MASK (ARM_AFF0_MASK | ARM_AFF1_MASK | ARM_AFF2_MASK) 1144 #define ARM64_AFFINITY_MASK \ 1145 (ARM_AFF0_MASK | ARM_AFF1_MASK | ARM_AFF2_MASK | ARM_AFF3_MASK) 1146 #define ARM64_AFFINITY_INVALID (~ARM64_AFFINITY_MASK) 1147 1148 uint64_t arm_build_mp_affinity(int idx, uint8_t clustersz); 1149 1150 #ifndef CONFIG_USER_ONLY 1151 extern const VMStateDescription vmstate_arm_cpu; 1152 1153 void arm_cpu_do_interrupt(CPUState *cpu); 1154 void arm_v7m_cpu_do_interrupt(CPUState *cpu); 1155 1156 hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr, 1157 MemTxAttrs *attrs); 1158 #endif /* !CONFIG_USER_ONLY */ 1159 1160 int arm_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); 1161 int arm_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); 1162 1163 /* Returns the dynamically generated XML for the gdb stub. 1164 * Returns a pointer to the XML contents for the specified XML file or NULL 1165 * if the XML name doesn't match the predefined one. 1166 */ 1167 const char *arm_gdb_get_dynamic_xml(CPUState *cpu, const char *xmlname); 1168 1169 int arm_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs, 1170 int cpuid, DumpState *s); 1171 int arm_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs, 1172 int cpuid, DumpState *s); 1173 1174 /** 1175 * arm_emulate_firmware_reset: Emulate firmware CPU reset handling 1176 * @cpu: CPU (which must have been freshly reset) 1177 * @target_el: exception level to put the CPU into 1178 * @secure: whether to put the CPU in secure state 1179 * 1180 * When QEMU is directly running a guest kernel at a lower level than 1181 * EL3 it implicitly emulates some aspects of the guest firmware. 1182 * This includes that on reset we need to configure the parts of the 1183 * CPU corresponding to EL3 so that the real guest code can run at its 1184 * lower exception level. This function does that post-reset CPU setup, 1185 * for when we do direct boot of a guest kernel, and for when we 1186 * emulate PSCI and similar firmware interfaces starting a CPU at a 1187 * lower exception level. 1188 * 1189 * @target_el must be an EL implemented by the CPU between 1 and 3. 1190 * We do not support dropping into a Secure EL other than 3. 1191 * 1192 * It is the responsibility of the caller to call arm_rebuild_hflags(). 1193 */ 1194 void arm_emulate_firmware_reset(CPUState *cpustate, int target_el); 1195 1196 #ifdef TARGET_AARCH64 1197 int aarch64_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); 1198 int aarch64_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); 1199 void aarch64_sve_narrow_vq(CPUARMState *env, unsigned vq); 1200 void aarch64_sve_change_el(CPUARMState *env, int old_el, 1201 int new_el, bool el0_a64); 1202 void aarch64_set_svcr(CPUARMState *env, uint64_t new, uint64_t mask); 1203 1204 /* 1205 * SVE registers are encoded in KVM's memory in an endianness-invariant format. 1206 * The byte at offset i from the start of the in-memory representation contains 1207 * the bits [(7 + 8 * i) : (8 * i)] of the register value. As this means the 1208 * lowest offsets are stored in the lowest memory addresses, then that nearly 1209 * matches QEMU's representation, which is to use an array of host-endian 1210 * uint64_t's, where the lower offsets are at the lower indices. To complete 1211 * the translation we just need to byte swap the uint64_t's on big-endian hosts. 1212 */ 1213 static inline uint64_t *sve_bswap64(uint64_t *dst, uint64_t *src, int nr) 1214 { 1215 #if HOST_BIG_ENDIAN 1216 int i; 1217 1218 for (i = 0; i < nr; ++i) { 1219 dst[i] = bswap64(src[i]); 1220 } 1221 1222 return dst; 1223 #else 1224 return src; 1225 #endif 1226 } 1227 1228 #else 1229 static inline void aarch64_sve_narrow_vq(CPUARMState *env, unsigned vq) { } 1230 static inline void aarch64_sve_change_el(CPUARMState *env, int o, 1231 int n, bool a) 1232 { } 1233 #endif 1234 1235 void aarch64_sync_32_to_64(CPUARMState *env); 1236 void aarch64_sync_64_to_32(CPUARMState *env); 1237 1238 int fp_exception_el(CPUARMState *env, int cur_el); 1239 int sve_exception_el(CPUARMState *env, int cur_el); 1240 int sme_exception_el(CPUARMState *env, int cur_el); 1241 1242 /** 1243 * sve_vqm1_for_el_sm: 1244 * @env: CPUARMState 1245 * @el: exception level 1246 * @sm: streaming mode 1247 * 1248 * Compute the current vector length for @el & @sm, in units of 1249 * Quadwords Minus 1 -- the same scale used for ZCR_ELx.LEN. 1250 * If @sm, compute for SVL, otherwise NVL. 1251 */ 1252 uint32_t sve_vqm1_for_el_sm(CPUARMState *env, int el, bool sm); 1253 1254 /* Likewise, but using @sm = PSTATE.SM. */ 1255 uint32_t sve_vqm1_for_el(CPUARMState *env, int el); 1256 1257 static inline bool is_a64(CPUARMState *env) 1258 { 1259 return env->aarch64; 1260 } 1261 1262 /** 1263 * pmu_op_start/finish 1264 * @env: CPUARMState 1265 * 1266 * Convert all PMU counters between their delta form (the typical mode when 1267 * they are enabled) and the guest-visible values. These two calls must 1268 * surround any action which might affect the counters. 1269 */ 1270 void pmu_op_start(CPUARMState *env); 1271 void pmu_op_finish(CPUARMState *env); 1272 1273 /* 1274 * Called when a PMU counter is due to overflow 1275 */ 1276 void arm_pmu_timer_cb(void *opaque); 1277 1278 /** 1279 * Functions to register as EL change hooks for PMU mode filtering 1280 */ 1281 void pmu_pre_el_change(ARMCPU *cpu, void *ignored); 1282 void pmu_post_el_change(ARMCPU *cpu, void *ignored); 1283 1284 /* 1285 * pmu_init 1286 * @cpu: ARMCPU 1287 * 1288 * Initialize the CPU's PMCEID[01]_EL0 registers and associated internal state 1289 * for the current configuration 1290 */ 1291 void pmu_init(ARMCPU *cpu); 1292 1293 /* SCTLR bit meanings. Several bits have been reused in newer 1294 * versions of the architecture; in that case we define constants 1295 * for both old and new bit meanings. Code which tests against those 1296 * bits should probably check or otherwise arrange that the CPU 1297 * is the architectural version it expects. 1298 */ 1299 #define SCTLR_M (1U << 0) 1300 #define SCTLR_A (1U << 1) 1301 #define SCTLR_C (1U << 2) 1302 #define SCTLR_W (1U << 3) /* up to v6; RAO in v7 */ 1303 #define SCTLR_nTLSMD_32 (1U << 3) /* v8.2-LSMAOC, AArch32 only */ 1304 #define SCTLR_SA (1U << 3) /* AArch64 only */ 1305 #define SCTLR_P (1U << 4) /* up to v5; RAO in v6 and v7 */ 1306 #define SCTLR_LSMAOE_32 (1U << 4) /* v8.2-LSMAOC, AArch32 only */ 1307 #define SCTLR_SA0 (1U << 4) /* v8 onward, AArch64 only */ 1308 #define SCTLR_D (1U << 5) /* up to v5; RAO in v6 */ 1309 #define SCTLR_CP15BEN (1U << 5) /* v7 onward */ 1310 #define SCTLR_L (1U << 6) /* up to v5; RAO in v6 and v7; RAZ in v8 */ 1311 #define SCTLR_nAA (1U << 6) /* when FEAT_LSE2 is implemented */ 1312 #define SCTLR_B (1U << 7) /* up to v6; RAZ in v7 */ 1313 #define SCTLR_ITD (1U << 7) /* v8 onward */ 1314 #define SCTLR_S (1U << 8) /* up to v6; RAZ in v7 */ 1315 #define SCTLR_SED (1U << 8) /* v8 onward */ 1316 #define SCTLR_R (1U << 9) /* up to v6; RAZ in v7 */ 1317 #define SCTLR_UMA (1U << 9) /* v8 onward, AArch64 only */ 1318 #define SCTLR_F (1U << 10) /* up to v6 */ 1319 #define SCTLR_SW (1U << 10) /* v7 */ 1320 #define SCTLR_EnRCTX (1U << 10) /* in v8.0-PredInv */ 1321 #define SCTLR_Z (1U << 11) /* in v7, RES1 in v8 */ 1322 #define SCTLR_EOS (1U << 11) /* v8.5-ExS */ 1323 #define SCTLR_I (1U << 12) 1324 #define SCTLR_V (1U << 13) /* AArch32 only */ 1325 #define SCTLR_EnDB (1U << 13) /* v8.3, AArch64 only */ 1326 #define SCTLR_RR (1U << 14) /* up to v7 */ 1327 #define SCTLR_DZE (1U << 14) /* v8 onward, AArch64 only */ 1328 #define SCTLR_L4 (1U << 15) /* up to v6; RAZ in v7 */ 1329 #define SCTLR_UCT (1U << 15) /* v8 onward, AArch64 only */ 1330 #define SCTLR_DT (1U << 16) /* up to ??, RAO in v6 and v7 */ 1331 #define SCTLR_nTWI (1U << 16) /* v8 onward */ 1332 #define SCTLR_HA (1U << 17) /* up to v7, RES0 in v8 */ 1333 #define SCTLR_BR (1U << 17) /* PMSA only */ 1334 #define SCTLR_IT (1U << 18) /* up to ??, RAO in v6 and v7 */ 1335 #define SCTLR_nTWE (1U << 18) /* v8 onward */ 1336 #define SCTLR_WXN (1U << 19) 1337 #define SCTLR_ST (1U << 20) /* up to ??, RAZ in v6 */ 1338 #define SCTLR_UWXN (1U << 20) /* v7 onward, AArch32 only */ 1339 #define SCTLR_TSCXT (1U << 20) /* FEAT_CSV2_1p2, AArch64 only */ 1340 #define SCTLR_FI (1U << 21) /* up to v7, v8 RES0 */ 1341 #define SCTLR_IESB (1U << 21) /* v8.2-IESB, AArch64 only */ 1342 #define SCTLR_U (1U << 22) /* up to v6, RAO in v7 */ 1343 #define SCTLR_EIS (1U << 22) /* v8.5-ExS */ 1344 #define SCTLR_XP (1U << 23) /* up to v6; v7 onward RAO */ 1345 #define SCTLR_SPAN (1U << 23) /* v8.1-PAN */ 1346 #define SCTLR_VE (1U << 24) /* up to v7 */ 1347 #define SCTLR_E0E (1U << 24) /* v8 onward, AArch64 only */ 1348 #define SCTLR_EE (1U << 25) 1349 #define SCTLR_L2 (1U << 26) /* up to v6, RAZ in v7 */ 1350 #define SCTLR_UCI (1U << 26) /* v8 onward, AArch64 only */ 1351 #define SCTLR_NMFI (1U << 27) /* up to v7, RAZ in v7VE and v8 */ 1352 #define SCTLR_EnDA (1U << 27) /* v8.3, AArch64 only */ 1353 #define SCTLR_TRE (1U << 28) /* AArch32 only */ 1354 #define SCTLR_nTLSMD_64 (1U << 28) /* v8.2-LSMAOC, AArch64 only */ 1355 #define SCTLR_AFE (1U << 29) /* AArch32 only */ 1356 #define SCTLR_LSMAOE_64 (1U << 29) /* v8.2-LSMAOC, AArch64 only */ 1357 #define SCTLR_TE (1U << 30) /* AArch32 only */ 1358 #define SCTLR_EnIB (1U << 30) /* v8.3, AArch64 only */ 1359 #define SCTLR_EnIA (1U << 31) /* v8.3, AArch64 only */ 1360 #define SCTLR_DSSBS_32 (1U << 31) /* v8.5, AArch32 only */ 1361 #define SCTLR_MSCEN (1ULL << 33) /* FEAT_MOPS */ 1362 #define SCTLR_BT0 (1ULL << 35) /* v8.5-BTI */ 1363 #define SCTLR_BT1 (1ULL << 36) /* v8.5-BTI */ 1364 #define SCTLR_ITFSB (1ULL << 37) /* v8.5-MemTag */ 1365 #define SCTLR_TCF0 (3ULL << 38) /* v8.5-MemTag */ 1366 #define SCTLR_TCF (3ULL << 40) /* v8.5-MemTag */ 1367 #define SCTLR_ATA0 (1ULL << 42) /* v8.5-MemTag */ 1368 #define SCTLR_ATA (1ULL << 43) /* v8.5-MemTag */ 1369 #define SCTLR_DSSBS_64 (1ULL << 44) /* v8.5, AArch64 only */ 1370 #define SCTLR_TWEDEn (1ULL << 45) /* FEAT_TWED */ 1371 #define SCTLR_TWEDEL MAKE_64_MASK(46, 4) /* FEAT_TWED */ 1372 #define SCTLR_TMT0 (1ULL << 50) /* FEAT_TME */ 1373 #define SCTLR_TMT (1ULL << 51) /* FEAT_TME */ 1374 #define SCTLR_TME0 (1ULL << 52) /* FEAT_TME */ 1375 #define SCTLR_TME (1ULL << 53) /* FEAT_TME */ 1376 #define SCTLR_EnASR (1ULL << 54) /* FEAT_LS64_V */ 1377 #define SCTLR_EnAS0 (1ULL << 55) /* FEAT_LS64_ACCDATA */ 1378 #define SCTLR_EnALS (1ULL << 56) /* FEAT_LS64 */ 1379 #define SCTLR_EPAN (1ULL << 57) /* FEAT_PAN3 */ 1380 #define SCTLR_EnTP2 (1ULL << 60) /* FEAT_SME */ 1381 #define SCTLR_NMI (1ULL << 61) /* FEAT_NMI */ 1382 #define SCTLR_SPINTMASK (1ULL << 62) /* FEAT_NMI */ 1383 #define SCTLR_TIDCP (1ULL << 63) /* FEAT_TIDCP1 */ 1384 1385 /* Bit definitions for CPACR (AArch32 only) */ 1386 FIELD(CPACR, CP10, 20, 2) 1387 FIELD(CPACR, CP11, 22, 2) 1388 FIELD(CPACR, TRCDIS, 28, 1) /* matches CPACR_EL1.TTA */ 1389 FIELD(CPACR, D32DIS, 30, 1) /* up to v7; RAZ in v8 */ 1390 FIELD(CPACR, ASEDIS, 31, 1) 1391 1392 /* Bit definitions for CPACR_EL1 (AArch64 only) */ 1393 FIELD(CPACR_EL1, ZEN, 16, 2) 1394 FIELD(CPACR_EL1, FPEN, 20, 2) 1395 FIELD(CPACR_EL1, SMEN, 24, 2) 1396 FIELD(CPACR_EL1, TTA, 28, 1) /* matches CPACR.TRCDIS */ 1397 1398 /* Bit definitions for HCPTR (AArch32 only) */ 1399 FIELD(HCPTR, TCP10, 10, 1) 1400 FIELD(HCPTR, TCP11, 11, 1) 1401 FIELD(HCPTR, TASE, 15, 1) 1402 FIELD(HCPTR, TTA, 20, 1) 1403 FIELD(HCPTR, TAM, 30, 1) /* matches CPTR_EL2.TAM */ 1404 FIELD(HCPTR, TCPAC, 31, 1) /* matches CPTR_EL2.TCPAC */ 1405 1406 /* Bit definitions for CPTR_EL2 (AArch64 only) */ 1407 FIELD(CPTR_EL2, TZ, 8, 1) /* !E2H */ 1408 FIELD(CPTR_EL2, TFP, 10, 1) /* !E2H, matches HCPTR.TCP10 */ 1409 FIELD(CPTR_EL2, TSM, 12, 1) /* !E2H */ 1410 FIELD(CPTR_EL2, ZEN, 16, 2) /* E2H */ 1411 FIELD(CPTR_EL2, FPEN, 20, 2) /* E2H */ 1412 FIELD(CPTR_EL2, SMEN, 24, 2) /* E2H */ 1413 FIELD(CPTR_EL2, TTA, 28, 1) 1414 FIELD(CPTR_EL2, TAM, 30, 1) /* matches HCPTR.TAM */ 1415 FIELD(CPTR_EL2, TCPAC, 31, 1) /* matches HCPTR.TCPAC */ 1416 1417 /* Bit definitions for CPTR_EL3 (AArch64 only) */ 1418 FIELD(CPTR_EL3, EZ, 8, 1) 1419 FIELD(CPTR_EL3, TFP, 10, 1) 1420 FIELD(CPTR_EL3, ESM, 12, 1) 1421 FIELD(CPTR_EL3, TTA, 20, 1) 1422 FIELD(CPTR_EL3, TAM, 30, 1) 1423 FIELD(CPTR_EL3, TCPAC, 31, 1) 1424 1425 #define MDCR_MTPME (1U << 28) 1426 #define MDCR_TDCC (1U << 27) 1427 #define MDCR_HLP (1U << 26) /* MDCR_EL2 */ 1428 #define MDCR_SCCD (1U << 23) /* MDCR_EL3 */ 1429 #define MDCR_HCCD (1U << 23) /* MDCR_EL2 */ 1430 #define MDCR_EPMAD (1U << 21) 1431 #define MDCR_EDAD (1U << 20) 1432 #define MDCR_TTRF (1U << 19) 1433 #define MDCR_STE (1U << 18) /* MDCR_EL3 */ 1434 #define MDCR_SPME (1U << 17) /* MDCR_EL3 */ 1435 #define MDCR_HPMD (1U << 17) /* MDCR_EL2 */ 1436 #define MDCR_SDD (1U << 16) 1437 #define MDCR_SPD (3U << 14) 1438 #define MDCR_TDRA (1U << 11) 1439 #define MDCR_TDOSA (1U << 10) 1440 #define MDCR_TDA (1U << 9) 1441 #define MDCR_TDE (1U << 8) 1442 #define MDCR_HPME (1U << 7) 1443 #define MDCR_TPM (1U << 6) 1444 #define MDCR_TPMCR (1U << 5) 1445 #define MDCR_HPMN (0x1fU) 1446 1447 /* Not all of the MDCR_EL3 bits are present in the 32-bit SDCR */ 1448 #define SDCR_VALID_MASK (MDCR_MTPME | MDCR_TDCC | MDCR_SCCD | \ 1449 MDCR_EPMAD | MDCR_EDAD | MDCR_TTRF | \ 1450 MDCR_STE | MDCR_SPME | MDCR_SPD) 1451 1452 #define CPSR_M (0x1fU) 1453 #define CPSR_T (1U << 5) 1454 #define CPSR_F (1U << 6) 1455 #define CPSR_I (1U << 7) 1456 #define CPSR_A (1U << 8) 1457 #define CPSR_E (1U << 9) 1458 #define CPSR_IT_2_7 (0xfc00U) 1459 #define CPSR_GE (0xfU << 16) 1460 #define CPSR_IL (1U << 20) 1461 #define CPSR_DIT (1U << 21) 1462 #define CPSR_PAN (1U << 22) 1463 #define CPSR_SSBS (1U << 23) 1464 #define CPSR_J (1U << 24) 1465 #define CPSR_IT_0_1 (3U << 25) 1466 #define CPSR_Q (1U << 27) 1467 #define CPSR_V (1U << 28) 1468 #define CPSR_C (1U << 29) 1469 #define CPSR_Z (1U << 30) 1470 #define CPSR_N (1U << 31) 1471 #define CPSR_NZCV (CPSR_N | CPSR_Z | CPSR_C | CPSR_V) 1472 #define CPSR_AIF (CPSR_A | CPSR_I | CPSR_F) 1473 1474 #define CPSR_IT (CPSR_IT_0_1 | CPSR_IT_2_7) 1475 #define CACHED_CPSR_BITS (CPSR_T | CPSR_AIF | CPSR_GE | CPSR_IT | CPSR_Q \ 1476 | CPSR_NZCV) 1477 /* Bits writable in user mode. */ 1478 #define CPSR_USER (CPSR_NZCV | CPSR_Q | CPSR_GE | CPSR_E) 1479 /* Execution state bits. MRS read as zero, MSR writes ignored. */ 1480 #define CPSR_EXEC (CPSR_T | CPSR_IT | CPSR_J | CPSR_IL) 1481 1482 /* Bit definitions for M profile XPSR. Most are the same as CPSR. */ 1483 #define XPSR_EXCP 0x1ffU 1484 #define XPSR_SPREALIGN (1U << 9) /* Only set in exception stack frames */ 1485 #define XPSR_IT_2_7 CPSR_IT_2_7 1486 #define XPSR_GE CPSR_GE 1487 #define XPSR_SFPA (1U << 20) /* Only set in exception stack frames */ 1488 #define XPSR_T (1U << 24) /* Not the same as CPSR_T ! */ 1489 #define XPSR_IT_0_1 CPSR_IT_0_1 1490 #define XPSR_Q CPSR_Q 1491 #define XPSR_V CPSR_V 1492 #define XPSR_C CPSR_C 1493 #define XPSR_Z CPSR_Z 1494 #define XPSR_N CPSR_N 1495 #define XPSR_NZCV CPSR_NZCV 1496 #define XPSR_IT CPSR_IT 1497 1498 #define TTBCR_N (7U << 0) /* TTBCR.EAE==0 */ 1499 #define TTBCR_T0SZ (7U << 0) /* TTBCR.EAE==1 */ 1500 #define TTBCR_PD0 (1U << 4) 1501 #define TTBCR_PD1 (1U << 5) 1502 #define TTBCR_EPD0 (1U << 7) 1503 #define TTBCR_IRGN0 (3U << 8) 1504 #define TTBCR_ORGN0 (3U << 10) 1505 #define TTBCR_SH0 (3U << 12) 1506 #define TTBCR_T1SZ (3U << 16) 1507 #define TTBCR_A1 (1U << 22) 1508 #define TTBCR_EPD1 (1U << 23) 1509 #define TTBCR_IRGN1 (3U << 24) 1510 #define TTBCR_ORGN1 (3U << 26) 1511 #define TTBCR_SH1 (1U << 28) 1512 #define TTBCR_EAE (1U << 31) 1513 1514 FIELD(VTCR, T0SZ, 0, 6) 1515 FIELD(VTCR, SL0, 6, 2) 1516 FIELD(VTCR, IRGN0, 8, 2) 1517 FIELD(VTCR, ORGN0, 10, 2) 1518 FIELD(VTCR, SH0, 12, 2) 1519 FIELD(VTCR, TG0, 14, 2) 1520 FIELD(VTCR, PS, 16, 3) 1521 FIELD(VTCR, VS, 19, 1) 1522 FIELD(VTCR, HA, 21, 1) 1523 FIELD(VTCR, HD, 22, 1) 1524 FIELD(VTCR, HWU59, 25, 1) 1525 FIELD(VTCR, HWU60, 26, 1) 1526 FIELD(VTCR, HWU61, 27, 1) 1527 FIELD(VTCR, HWU62, 28, 1) 1528 FIELD(VTCR, NSW, 29, 1) 1529 FIELD(VTCR, NSA, 30, 1) 1530 FIELD(VTCR, DS, 32, 1) 1531 FIELD(VTCR, SL2, 33, 1) 1532 1533 /* Bit definitions for ARMv8 SPSR (PSTATE) format. 1534 * Only these are valid when in AArch64 mode; in 1535 * AArch32 mode SPSRs are basically CPSR-format. 1536 */ 1537 #define PSTATE_SP (1U) 1538 #define PSTATE_M (0xFU) 1539 #define PSTATE_nRW (1U << 4) 1540 #define PSTATE_F (1U << 6) 1541 #define PSTATE_I (1U << 7) 1542 #define PSTATE_A (1U << 8) 1543 #define PSTATE_D (1U << 9) 1544 #define PSTATE_BTYPE (3U << 10) 1545 #define PSTATE_SSBS (1U << 12) 1546 #define PSTATE_IL (1U << 20) 1547 #define PSTATE_SS (1U << 21) 1548 #define PSTATE_PAN (1U << 22) 1549 #define PSTATE_UAO (1U << 23) 1550 #define PSTATE_DIT (1U << 24) 1551 #define PSTATE_TCO (1U << 25) 1552 #define PSTATE_V (1U << 28) 1553 #define PSTATE_C (1U << 29) 1554 #define PSTATE_Z (1U << 30) 1555 #define PSTATE_N (1U << 31) 1556 #define PSTATE_NZCV (PSTATE_N | PSTATE_Z | PSTATE_C | PSTATE_V) 1557 #define PSTATE_DAIF (PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F) 1558 #define CACHED_PSTATE_BITS (PSTATE_NZCV | PSTATE_DAIF | PSTATE_BTYPE) 1559 /* Mode values for AArch64 */ 1560 #define PSTATE_MODE_EL3h 13 1561 #define PSTATE_MODE_EL3t 12 1562 #define PSTATE_MODE_EL2h 9 1563 #define PSTATE_MODE_EL2t 8 1564 #define PSTATE_MODE_EL1h 5 1565 #define PSTATE_MODE_EL1t 4 1566 #define PSTATE_MODE_EL0t 0 1567 1568 /* PSTATE bits that are accessed via SVCR and not stored in SPSR_ELx. */ 1569 FIELD(SVCR, SM, 0, 1) 1570 FIELD(SVCR, ZA, 1, 1) 1571 1572 /* Fields for SMCR_ELx. */ 1573 FIELD(SMCR, LEN, 0, 4) 1574 FIELD(SMCR, FA64, 31, 1) 1575 1576 /* Write a new value to v7m.exception, thus transitioning into or out 1577 * of Handler mode; this may result in a change of active stack pointer. 1578 */ 1579 void write_v7m_exception(CPUARMState *env, uint32_t new_exc); 1580 1581 /* Map EL and handler into a PSTATE_MODE. */ 1582 static inline unsigned int aarch64_pstate_mode(unsigned int el, bool handler) 1583 { 1584 return (el << 2) | handler; 1585 } 1586 1587 /* Return the current PSTATE value. For the moment we don't support 32<->64 bit 1588 * interprocessing, so we don't attempt to sync with the cpsr state used by 1589 * the 32 bit decoder. 1590 */ 1591 static inline uint32_t pstate_read(CPUARMState *env) 1592 { 1593 int ZF; 1594 1595 ZF = (env->ZF == 0); 1596 return (env->NF & 0x80000000) | (ZF << 30) 1597 | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) 1598 | env->pstate | env->daif | (env->btype << 10); 1599 } 1600 1601 static inline void pstate_write(CPUARMState *env, uint32_t val) 1602 { 1603 env->ZF = (~val) & PSTATE_Z; 1604 env->NF = val; 1605 env->CF = (val >> 29) & 1; 1606 env->VF = (val << 3) & 0x80000000; 1607 env->daif = val & PSTATE_DAIF; 1608 env->btype = (val >> 10) & 3; 1609 env->pstate = val & ~CACHED_PSTATE_BITS; 1610 } 1611 1612 /* Return the current CPSR value. */ 1613 uint32_t cpsr_read(CPUARMState *env); 1614 1615 typedef enum CPSRWriteType { 1616 CPSRWriteByInstr = 0, /* from guest MSR or CPS */ 1617 CPSRWriteExceptionReturn = 1, /* from guest exception return insn */ 1618 CPSRWriteRaw = 2, 1619 /* trust values, no reg bank switch, no hflags rebuild */ 1620 CPSRWriteByGDBStub = 3, /* from the GDB stub */ 1621 } CPSRWriteType; 1622 1623 /* 1624 * Set the CPSR. Note that some bits of mask must be all-set or all-clear. 1625 * This will do an arm_rebuild_hflags() if any of the bits in @mask 1626 * correspond to TB flags bits cached in the hflags, unless @write_type 1627 * is CPSRWriteRaw. 1628 */ 1629 void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask, 1630 CPSRWriteType write_type); 1631 1632 /* Return the current xPSR value. */ 1633 static inline uint32_t xpsr_read(CPUARMState *env) 1634 { 1635 int ZF; 1636 ZF = (env->ZF == 0); 1637 return (env->NF & 0x80000000) | (ZF << 30) 1638 | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27) 1639 | (env->thumb << 24) | ((env->condexec_bits & 3) << 25) 1640 | ((env->condexec_bits & 0xfc) << 8) 1641 | (env->GE << 16) 1642 | env->v7m.exception; 1643 } 1644 1645 /* Set the xPSR. Note that some bits of mask must be all-set or all-clear. */ 1646 static inline void xpsr_write(CPUARMState *env, uint32_t val, uint32_t mask) 1647 { 1648 if (mask & XPSR_NZCV) { 1649 env->ZF = (~val) & XPSR_Z; 1650 env->NF = val; 1651 env->CF = (val >> 29) & 1; 1652 env->VF = (val << 3) & 0x80000000; 1653 } 1654 if (mask & XPSR_Q) { 1655 env->QF = ((val & XPSR_Q) != 0); 1656 } 1657 if (mask & XPSR_GE) { 1658 env->GE = (val & XPSR_GE) >> 16; 1659 } 1660 #ifndef CONFIG_USER_ONLY 1661 if (mask & XPSR_T) { 1662 env->thumb = ((val & XPSR_T) != 0); 1663 } 1664 if (mask & XPSR_IT_0_1) { 1665 env->condexec_bits &= ~3; 1666 env->condexec_bits |= (val >> 25) & 3; 1667 } 1668 if (mask & XPSR_IT_2_7) { 1669 env->condexec_bits &= 3; 1670 env->condexec_bits |= (val >> 8) & 0xfc; 1671 } 1672 if (mask & XPSR_EXCP) { 1673 /* Note that this only happens on exception exit */ 1674 write_v7m_exception(env, val & XPSR_EXCP); 1675 } 1676 #endif 1677 } 1678 1679 #define HCR_VM (1ULL << 0) 1680 #define HCR_SWIO (1ULL << 1) 1681 #define HCR_PTW (1ULL << 2) 1682 #define HCR_FMO (1ULL << 3) 1683 #define HCR_IMO (1ULL << 4) 1684 #define HCR_AMO (1ULL << 5) 1685 #define HCR_VF (1ULL << 6) 1686 #define HCR_VI (1ULL << 7) 1687 #define HCR_VSE (1ULL << 8) 1688 #define HCR_FB (1ULL << 9) 1689 #define HCR_BSU_MASK (3ULL << 10) 1690 #define HCR_DC (1ULL << 12) 1691 #define HCR_TWI (1ULL << 13) 1692 #define HCR_TWE (1ULL << 14) 1693 #define HCR_TID0 (1ULL << 15) 1694 #define HCR_TID1 (1ULL << 16) 1695 #define HCR_TID2 (1ULL << 17) 1696 #define HCR_TID3 (1ULL << 18) 1697 #define HCR_TSC (1ULL << 19) 1698 #define HCR_TIDCP (1ULL << 20) 1699 #define HCR_TACR (1ULL << 21) 1700 #define HCR_TSW (1ULL << 22) 1701 #define HCR_TPCP (1ULL << 23) 1702 #define HCR_TPU (1ULL << 24) 1703 #define HCR_TTLB (1ULL << 25) 1704 #define HCR_TVM (1ULL << 26) 1705 #define HCR_TGE (1ULL << 27) 1706 #define HCR_TDZ (1ULL << 28) 1707 #define HCR_HCD (1ULL << 29) 1708 #define HCR_TRVM (1ULL << 30) 1709 #define HCR_RW (1ULL << 31) 1710 #define HCR_CD (1ULL << 32) 1711 #define HCR_ID (1ULL << 33) 1712 #define HCR_E2H (1ULL << 34) 1713 #define HCR_TLOR (1ULL << 35) 1714 #define HCR_TERR (1ULL << 36) 1715 #define HCR_TEA (1ULL << 37) 1716 #define HCR_MIOCNCE (1ULL << 38) 1717 #define HCR_TME (1ULL << 39) 1718 #define HCR_APK (1ULL << 40) 1719 #define HCR_API (1ULL << 41) 1720 #define HCR_NV (1ULL << 42) 1721 #define HCR_NV1 (1ULL << 43) 1722 #define HCR_AT (1ULL << 44) 1723 #define HCR_NV2 (1ULL << 45) 1724 #define HCR_FWB (1ULL << 46) 1725 #define HCR_FIEN (1ULL << 47) 1726 #define HCR_GPF (1ULL << 48) 1727 #define HCR_TID4 (1ULL << 49) 1728 #define HCR_TICAB (1ULL << 50) 1729 #define HCR_AMVOFFEN (1ULL << 51) 1730 #define HCR_TOCU (1ULL << 52) 1731 #define HCR_ENSCXT (1ULL << 53) 1732 #define HCR_TTLBIS (1ULL << 54) 1733 #define HCR_TTLBOS (1ULL << 55) 1734 #define HCR_ATA (1ULL << 56) 1735 #define HCR_DCT (1ULL << 57) 1736 #define HCR_TID5 (1ULL << 58) 1737 #define HCR_TWEDEN (1ULL << 59) 1738 #define HCR_TWEDEL MAKE_64BIT_MASK(60, 4) 1739 1740 #define HCRX_ENAS0 (1ULL << 0) 1741 #define HCRX_ENALS (1ULL << 1) 1742 #define HCRX_ENASR (1ULL << 2) 1743 #define HCRX_FNXS (1ULL << 3) 1744 #define HCRX_FGTNXS (1ULL << 4) 1745 #define HCRX_SMPME (1ULL << 5) 1746 #define HCRX_TALLINT (1ULL << 6) 1747 #define HCRX_VINMI (1ULL << 7) 1748 #define HCRX_VFNMI (1ULL << 8) 1749 #define HCRX_CMOW (1ULL << 9) 1750 #define HCRX_MCE2 (1ULL << 10) 1751 #define HCRX_MSCEN (1ULL << 11) 1752 1753 #define HPFAR_NS (1ULL << 63) 1754 1755 #define SCR_NS (1ULL << 0) 1756 #define SCR_IRQ (1ULL << 1) 1757 #define SCR_FIQ (1ULL << 2) 1758 #define SCR_EA (1ULL << 3) 1759 #define SCR_FW (1ULL << 4) 1760 #define SCR_AW (1ULL << 5) 1761 #define SCR_NET (1ULL << 6) 1762 #define SCR_SMD (1ULL << 7) 1763 #define SCR_HCE (1ULL << 8) 1764 #define SCR_SIF (1ULL << 9) 1765 #define SCR_RW (1ULL << 10) 1766 #define SCR_ST (1ULL << 11) 1767 #define SCR_TWI (1ULL << 12) 1768 #define SCR_TWE (1ULL << 13) 1769 #define SCR_TLOR (1ULL << 14) 1770 #define SCR_TERR (1ULL << 15) 1771 #define SCR_APK (1ULL << 16) 1772 #define SCR_API (1ULL << 17) 1773 #define SCR_EEL2 (1ULL << 18) 1774 #define SCR_EASE (1ULL << 19) 1775 #define SCR_NMEA (1ULL << 20) 1776 #define SCR_FIEN (1ULL << 21) 1777 #define SCR_ENSCXT (1ULL << 25) 1778 #define SCR_ATA (1ULL << 26) 1779 #define SCR_FGTEN (1ULL << 27) 1780 #define SCR_ECVEN (1ULL << 28) 1781 #define SCR_TWEDEN (1ULL << 29) 1782 #define SCR_TWEDEL MAKE_64BIT_MASK(30, 4) 1783 #define SCR_TME (1ULL << 34) 1784 #define SCR_AMVOFFEN (1ULL << 35) 1785 #define SCR_ENAS0 (1ULL << 36) 1786 #define SCR_ADEN (1ULL << 37) 1787 #define SCR_HXEN (1ULL << 38) 1788 #define SCR_TRNDR (1ULL << 40) 1789 #define SCR_ENTP2 (1ULL << 41) 1790 #define SCR_GPF (1ULL << 48) 1791 #define SCR_NSE (1ULL << 62) 1792 1793 #define HSTR_TTEE (1 << 16) 1794 #define HSTR_TJDBX (1 << 17) 1795 1796 #define CNTHCTL_CNTVMASK (1 << 18) 1797 #define CNTHCTL_CNTPMASK (1 << 19) 1798 1799 /* Return the current FPSCR value. */ 1800 uint32_t vfp_get_fpscr(CPUARMState *env); 1801 void vfp_set_fpscr(CPUARMState *env, uint32_t val); 1802 1803 /* FPCR, Floating Point Control Register 1804 * FPSR, Floating Poiht Status Register 1805 * 1806 * For A64 the FPSCR is split into two logically distinct registers, 1807 * FPCR and FPSR. However since they still use non-overlapping bits 1808 * we store the underlying state in fpscr and just mask on read/write. 1809 */ 1810 #define FPSR_MASK 0xf800009f 1811 #define FPCR_MASK 0x07ff9f00 1812 1813 #define FPCR_IOE (1 << 8) /* Invalid Operation exception trap enable */ 1814 #define FPCR_DZE (1 << 9) /* Divide by Zero exception trap enable */ 1815 #define FPCR_OFE (1 << 10) /* Overflow exception trap enable */ 1816 #define FPCR_UFE (1 << 11) /* Underflow exception trap enable */ 1817 #define FPCR_IXE (1 << 12) /* Inexact exception trap enable */ 1818 #define FPCR_IDE (1 << 15) /* Input Denormal exception trap enable */ 1819 #define FPCR_FZ16 (1 << 19) /* ARMv8.2+, FP16 flush-to-zero */ 1820 #define FPCR_RMODE_MASK (3 << 22) /* Rounding mode */ 1821 #define FPCR_FZ (1 << 24) /* Flush-to-zero enable bit */ 1822 #define FPCR_DN (1 << 25) /* Default NaN enable bit */ 1823 #define FPCR_AHP (1 << 26) /* Alternative half-precision */ 1824 #define FPCR_QC (1 << 27) /* Cumulative saturation bit */ 1825 #define FPCR_V (1 << 28) /* FP overflow flag */ 1826 #define FPCR_C (1 << 29) /* FP carry flag */ 1827 #define FPCR_Z (1 << 30) /* FP zero flag */ 1828 #define FPCR_N (1 << 31) /* FP negative flag */ 1829 1830 #define FPCR_LTPSIZE_SHIFT 16 /* LTPSIZE, M-profile only */ 1831 #define FPCR_LTPSIZE_MASK (7 << FPCR_LTPSIZE_SHIFT) 1832 #define FPCR_LTPSIZE_LENGTH 3 1833 1834 #define FPCR_NZCV_MASK (FPCR_N | FPCR_Z | FPCR_C | FPCR_V) 1835 #define FPCR_NZCVQC_MASK (FPCR_NZCV_MASK | FPCR_QC) 1836 1837 static inline uint32_t vfp_get_fpsr(CPUARMState *env) 1838 { 1839 return vfp_get_fpscr(env) & FPSR_MASK; 1840 } 1841 1842 static inline void vfp_set_fpsr(CPUARMState *env, uint32_t val) 1843 { 1844 uint32_t new_fpscr = (vfp_get_fpscr(env) & ~FPSR_MASK) | (val & FPSR_MASK); 1845 vfp_set_fpscr(env, new_fpscr); 1846 } 1847 1848 static inline uint32_t vfp_get_fpcr(CPUARMState *env) 1849 { 1850 return vfp_get_fpscr(env) & FPCR_MASK; 1851 } 1852 1853 static inline void vfp_set_fpcr(CPUARMState *env, uint32_t val) 1854 { 1855 uint32_t new_fpscr = (vfp_get_fpscr(env) & ~FPCR_MASK) | (val & FPCR_MASK); 1856 vfp_set_fpscr(env, new_fpscr); 1857 } 1858 1859 enum arm_cpu_mode { 1860 ARM_CPU_MODE_USR = 0x10, 1861 ARM_CPU_MODE_FIQ = 0x11, 1862 ARM_CPU_MODE_IRQ = 0x12, 1863 ARM_CPU_MODE_SVC = 0x13, 1864 ARM_CPU_MODE_MON = 0x16, 1865 ARM_CPU_MODE_ABT = 0x17, 1866 ARM_CPU_MODE_HYP = 0x1a, 1867 ARM_CPU_MODE_UND = 0x1b, 1868 ARM_CPU_MODE_SYS = 0x1f 1869 }; 1870 1871 /* VFP system registers. */ 1872 #define ARM_VFP_FPSID 0 1873 #define ARM_VFP_FPSCR 1 1874 #define ARM_VFP_MVFR2 5 1875 #define ARM_VFP_MVFR1 6 1876 #define ARM_VFP_MVFR0 7 1877 #define ARM_VFP_FPEXC 8 1878 #define ARM_VFP_FPINST 9 1879 #define ARM_VFP_FPINST2 10 1880 /* These ones are M-profile only */ 1881 #define ARM_VFP_FPSCR_NZCVQC 2 1882 #define ARM_VFP_VPR 12 1883 #define ARM_VFP_P0 13 1884 #define ARM_VFP_FPCXT_NS 14 1885 #define ARM_VFP_FPCXT_S 15 1886 1887 /* QEMU-internal value meaning "FPSCR, but we care only about NZCV" */ 1888 #define QEMU_VFP_FPSCR_NZCV 0xffff 1889 1890 /* iwMMXt coprocessor control registers. */ 1891 #define ARM_IWMMXT_wCID 0 1892 #define ARM_IWMMXT_wCon 1 1893 #define ARM_IWMMXT_wCSSF 2 1894 #define ARM_IWMMXT_wCASF 3 1895 #define ARM_IWMMXT_wCGR0 8 1896 #define ARM_IWMMXT_wCGR1 9 1897 #define ARM_IWMMXT_wCGR2 10 1898 #define ARM_IWMMXT_wCGR3 11 1899 1900 /* V7M CCR bits */ 1901 FIELD(V7M_CCR, NONBASETHRDENA, 0, 1) 1902 FIELD(V7M_CCR, USERSETMPEND, 1, 1) 1903 FIELD(V7M_CCR, UNALIGN_TRP, 3, 1) 1904 FIELD(V7M_CCR, DIV_0_TRP, 4, 1) 1905 FIELD(V7M_CCR, BFHFNMIGN, 8, 1) 1906 FIELD(V7M_CCR, STKALIGN, 9, 1) 1907 FIELD(V7M_CCR, STKOFHFNMIGN, 10, 1) 1908 FIELD(V7M_CCR, DC, 16, 1) 1909 FIELD(V7M_CCR, IC, 17, 1) 1910 FIELD(V7M_CCR, BP, 18, 1) 1911 FIELD(V7M_CCR, LOB, 19, 1) 1912 FIELD(V7M_CCR, TRD, 20, 1) 1913 1914 /* V7M SCR bits */ 1915 FIELD(V7M_SCR, SLEEPONEXIT, 1, 1) 1916 FIELD(V7M_SCR, SLEEPDEEP, 2, 1) 1917 FIELD(V7M_SCR, SLEEPDEEPS, 3, 1) 1918 FIELD(V7M_SCR, SEVONPEND, 4, 1) 1919 1920 /* V7M AIRCR bits */ 1921 FIELD(V7M_AIRCR, VECTRESET, 0, 1) 1922 FIELD(V7M_AIRCR, VECTCLRACTIVE, 1, 1) 1923 FIELD(V7M_AIRCR, SYSRESETREQ, 2, 1) 1924 FIELD(V7M_AIRCR, SYSRESETREQS, 3, 1) 1925 FIELD(V7M_AIRCR, PRIGROUP, 8, 3) 1926 FIELD(V7M_AIRCR, BFHFNMINS, 13, 1) 1927 FIELD(V7M_AIRCR, PRIS, 14, 1) 1928 FIELD(V7M_AIRCR, ENDIANNESS, 15, 1) 1929 FIELD(V7M_AIRCR, VECTKEY, 16, 16) 1930 1931 /* V7M CFSR bits for MMFSR */ 1932 FIELD(V7M_CFSR, IACCVIOL, 0, 1) 1933 FIELD(V7M_CFSR, DACCVIOL, 1, 1) 1934 FIELD(V7M_CFSR, MUNSTKERR, 3, 1) 1935 FIELD(V7M_CFSR, MSTKERR, 4, 1) 1936 FIELD(V7M_CFSR, MLSPERR, 5, 1) 1937 FIELD(V7M_CFSR, MMARVALID, 7, 1) 1938 1939 /* V7M CFSR bits for BFSR */ 1940 FIELD(V7M_CFSR, IBUSERR, 8 + 0, 1) 1941 FIELD(V7M_CFSR, PRECISERR, 8 + 1, 1) 1942 FIELD(V7M_CFSR, IMPRECISERR, 8 + 2, 1) 1943 FIELD(V7M_CFSR, UNSTKERR, 8 + 3, 1) 1944 FIELD(V7M_CFSR, STKERR, 8 + 4, 1) 1945 FIELD(V7M_CFSR, LSPERR, 8 + 5, 1) 1946 FIELD(V7M_CFSR, BFARVALID, 8 + 7, 1) 1947 1948 /* V7M CFSR bits for UFSR */ 1949 FIELD(V7M_CFSR, UNDEFINSTR, 16 + 0, 1) 1950 FIELD(V7M_CFSR, INVSTATE, 16 + 1, 1) 1951 FIELD(V7M_CFSR, INVPC, 16 + 2, 1) 1952 FIELD(V7M_CFSR, NOCP, 16 + 3, 1) 1953 FIELD(V7M_CFSR, STKOF, 16 + 4, 1) 1954 FIELD(V7M_CFSR, UNALIGNED, 16 + 8, 1) 1955 FIELD(V7M_CFSR, DIVBYZERO, 16 + 9, 1) 1956 1957 /* V7M CFSR bit masks covering all of the subregister bits */ 1958 FIELD(V7M_CFSR, MMFSR, 0, 8) 1959 FIELD(V7M_CFSR, BFSR, 8, 8) 1960 FIELD(V7M_CFSR, UFSR, 16, 16) 1961 1962 /* V7M HFSR bits */ 1963 FIELD(V7M_HFSR, VECTTBL, 1, 1) 1964 FIELD(V7M_HFSR, FORCED, 30, 1) 1965 FIELD(V7M_HFSR, DEBUGEVT, 31, 1) 1966 1967 /* V7M DFSR bits */ 1968 FIELD(V7M_DFSR, HALTED, 0, 1) 1969 FIELD(V7M_DFSR, BKPT, 1, 1) 1970 FIELD(V7M_DFSR, DWTTRAP, 2, 1) 1971 FIELD(V7M_DFSR, VCATCH, 3, 1) 1972 FIELD(V7M_DFSR, EXTERNAL, 4, 1) 1973 1974 /* V7M SFSR bits */ 1975 FIELD(V7M_SFSR, INVEP, 0, 1) 1976 FIELD(V7M_SFSR, INVIS, 1, 1) 1977 FIELD(V7M_SFSR, INVER, 2, 1) 1978 FIELD(V7M_SFSR, AUVIOL, 3, 1) 1979 FIELD(V7M_SFSR, INVTRAN, 4, 1) 1980 FIELD(V7M_SFSR, LSPERR, 5, 1) 1981 FIELD(V7M_SFSR, SFARVALID, 6, 1) 1982 FIELD(V7M_SFSR, LSERR, 7, 1) 1983 1984 /* v7M MPU_CTRL bits */ 1985 FIELD(V7M_MPU_CTRL, ENABLE, 0, 1) 1986 FIELD(V7M_MPU_CTRL, HFNMIENA, 1, 1) 1987 FIELD(V7M_MPU_CTRL, PRIVDEFENA, 2, 1) 1988 1989 /* v7M CLIDR bits */ 1990 FIELD(V7M_CLIDR, CTYPE_ALL, 0, 21) 1991 FIELD(V7M_CLIDR, LOUIS, 21, 3) 1992 FIELD(V7M_CLIDR, LOC, 24, 3) 1993 FIELD(V7M_CLIDR, LOUU, 27, 3) 1994 FIELD(V7M_CLIDR, ICB, 30, 2) 1995 1996 FIELD(V7M_CSSELR, IND, 0, 1) 1997 FIELD(V7M_CSSELR, LEVEL, 1, 3) 1998 /* We use the combination of InD and Level to index into cpu->ccsidr[]; 1999 * define a mask for this and check that it doesn't permit running off 2000 * the end of the array. 2001 */ 2002 FIELD(V7M_CSSELR, INDEX, 0, 4) 2003 2004 /* v7M FPCCR bits */ 2005 FIELD(V7M_FPCCR, LSPACT, 0, 1) 2006 FIELD(V7M_FPCCR, USER, 1, 1) 2007 FIELD(V7M_FPCCR, S, 2, 1) 2008 FIELD(V7M_FPCCR, THREAD, 3, 1) 2009 FIELD(V7M_FPCCR, HFRDY, 4, 1) 2010 FIELD(V7M_FPCCR, MMRDY, 5, 1) 2011 FIELD(V7M_FPCCR, BFRDY, 6, 1) 2012 FIELD(V7M_FPCCR, SFRDY, 7, 1) 2013 FIELD(V7M_FPCCR, MONRDY, 8, 1) 2014 FIELD(V7M_FPCCR, SPLIMVIOL, 9, 1) 2015 FIELD(V7M_FPCCR, UFRDY, 10, 1) 2016 FIELD(V7M_FPCCR, RES0, 11, 15) 2017 FIELD(V7M_FPCCR, TS, 26, 1) 2018 FIELD(V7M_FPCCR, CLRONRETS, 27, 1) 2019 FIELD(V7M_FPCCR, CLRONRET, 28, 1) 2020 FIELD(V7M_FPCCR, LSPENS, 29, 1) 2021 FIELD(V7M_FPCCR, LSPEN, 30, 1) 2022 FIELD(V7M_FPCCR, ASPEN, 31, 1) 2023 /* These bits are banked. Others are non-banked and live in the M_REG_S bank */ 2024 #define R_V7M_FPCCR_BANKED_MASK \ 2025 (R_V7M_FPCCR_LSPACT_MASK | \ 2026 R_V7M_FPCCR_USER_MASK | \ 2027 R_V7M_FPCCR_THREAD_MASK | \ 2028 R_V7M_FPCCR_MMRDY_MASK | \ 2029 R_V7M_FPCCR_SPLIMVIOL_MASK | \ 2030 R_V7M_FPCCR_UFRDY_MASK | \ 2031 R_V7M_FPCCR_ASPEN_MASK) 2032 2033 /* v7M VPR bits */ 2034 FIELD(V7M_VPR, P0, 0, 16) 2035 FIELD(V7M_VPR, MASK01, 16, 4) 2036 FIELD(V7M_VPR, MASK23, 20, 4) 2037 2038 /* 2039 * System register ID fields. 2040 */ 2041 FIELD(CLIDR_EL1, CTYPE1, 0, 3) 2042 FIELD(CLIDR_EL1, CTYPE2, 3, 3) 2043 FIELD(CLIDR_EL1, CTYPE3, 6, 3) 2044 FIELD(CLIDR_EL1, CTYPE4, 9, 3) 2045 FIELD(CLIDR_EL1, CTYPE5, 12, 3) 2046 FIELD(CLIDR_EL1, CTYPE6, 15, 3) 2047 FIELD(CLIDR_EL1, CTYPE7, 18, 3) 2048 FIELD(CLIDR_EL1, LOUIS, 21, 3) 2049 FIELD(CLIDR_EL1, LOC, 24, 3) 2050 FIELD(CLIDR_EL1, LOUU, 27, 3) 2051 FIELD(CLIDR_EL1, ICB, 30, 3) 2052 2053 /* When FEAT_CCIDX is implemented */ 2054 FIELD(CCSIDR_EL1, CCIDX_LINESIZE, 0, 3) 2055 FIELD(CCSIDR_EL1, CCIDX_ASSOCIATIVITY, 3, 21) 2056 FIELD(CCSIDR_EL1, CCIDX_NUMSETS, 32, 24) 2057 2058 /* When FEAT_CCIDX is not implemented */ 2059 FIELD(CCSIDR_EL1, LINESIZE, 0, 3) 2060 FIELD(CCSIDR_EL1, ASSOCIATIVITY, 3, 10) 2061 FIELD(CCSIDR_EL1, NUMSETS, 13, 15) 2062 2063 FIELD(CTR_EL0, IMINLINE, 0, 4) 2064 FIELD(CTR_EL0, L1IP, 14, 2) 2065 FIELD(CTR_EL0, DMINLINE, 16, 4) 2066 FIELD(CTR_EL0, ERG, 20, 4) 2067 FIELD(CTR_EL0, CWG, 24, 4) 2068 FIELD(CTR_EL0, IDC, 28, 1) 2069 FIELD(CTR_EL0, DIC, 29, 1) 2070 FIELD(CTR_EL0, TMINLINE, 32, 6) 2071 2072 FIELD(MIDR_EL1, REVISION, 0, 4) 2073 FIELD(MIDR_EL1, PARTNUM, 4, 12) 2074 FIELD(MIDR_EL1, ARCHITECTURE, 16, 4) 2075 FIELD(MIDR_EL1, VARIANT, 20, 4) 2076 FIELD(MIDR_EL1, IMPLEMENTER, 24, 8) 2077 2078 FIELD(ID_ISAR0, SWAP, 0, 4) 2079 FIELD(ID_ISAR0, BITCOUNT, 4, 4) 2080 FIELD(ID_ISAR0, BITFIELD, 8, 4) 2081 FIELD(ID_ISAR0, CMPBRANCH, 12, 4) 2082 FIELD(ID_ISAR0, COPROC, 16, 4) 2083 FIELD(ID_ISAR0, DEBUG, 20, 4) 2084 FIELD(ID_ISAR0, DIVIDE, 24, 4) 2085 2086 FIELD(ID_ISAR1, ENDIAN, 0, 4) 2087 FIELD(ID_ISAR1, EXCEPT, 4, 4) 2088 FIELD(ID_ISAR1, EXCEPT_AR, 8, 4) 2089 FIELD(ID_ISAR1, EXTEND, 12, 4) 2090 FIELD(ID_ISAR1, IFTHEN, 16, 4) 2091 FIELD(ID_ISAR1, IMMEDIATE, 20, 4) 2092 FIELD(ID_ISAR1, INTERWORK, 24, 4) 2093 FIELD(ID_ISAR1, JAZELLE, 28, 4) 2094 2095 FIELD(ID_ISAR2, LOADSTORE, 0, 4) 2096 FIELD(ID_ISAR2, MEMHINT, 4, 4) 2097 FIELD(ID_ISAR2, MULTIACCESSINT, 8, 4) 2098 FIELD(ID_ISAR2, MULT, 12, 4) 2099 FIELD(ID_ISAR2, MULTS, 16, 4) 2100 FIELD(ID_ISAR2, MULTU, 20, 4) 2101 FIELD(ID_ISAR2, PSR_AR, 24, 4) 2102 FIELD(ID_ISAR2, REVERSAL, 28, 4) 2103 2104 FIELD(ID_ISAR3, SATURATE, 0, 4) 2105 FIELD(ID_ISAR3, SIMD, 4, 4) 2106 FIELD(ID_ISAR3, SVC, 8, 4) 2107 FIELD(ID_ISAR3, SYNCHPRIM, 12, 4) 2108 FIELD(ID_ISAR3, TABBRANCH, 16, 4) 2109 FIELD(ID_ISAR3, T32COPY, 20, 4) 2110 FIELD(ID_ISAR3, TRUENOP, 24, 4) 2111 FIELD(ID_ISAR3, T32EE, 28, 4) 2112 2113 FIELD(ID_ISAR4, UNPRIV, 0, 4) 2114 FIELD(ID_ISAR4, WITHSHIFTS, 4, 4) 2115 FIELD(ID_ISAR4, WRITEBACK, 8, 4) 2116 FIELD(ID_ISAR4, SMC, 12, 4) 2117 FIELD(ID_ISAR4, BARRIER, 16, 4) 2118 FIELD(ID_ISAR4, SYNCHPRIM_FRAC, 20, 4) 2119 FIELD(ID_ISAR4, PSR_M, 24, 4) 2120 FIELD(ID_ISAR4, SWP_FRAC, 28, 4) 2121 2122 FIELD(ID_ISAR5, SEVL, 0, 4) 2123 FIELD(ID_ISAR5, AES, 4, 4) 2124 FIELD(ID_ISAR5, SHA1, 8, 4) 2125 FIELD(ID_ISAR5, SHA2, 12, 4) 2126 FIELD(ID_ISAR5, CRC32, 16, 4) 2127 FIELD(ID_ISAR5, RDM, 24, 4) 2128 FIELD(ID_ISAR5, VCMA, 28, 4) 2129 2130 FIELD(ID_ISAR6, JSCVT, 0, 4) 2131 FIELD(ID_ISAR6, DP, 4, 4) 2132 FIELD(ID_ISAR6, FHM, 8, 4) 2133 FIELD(ID_ISAR6, SB, 12, 4) 2134 FIELD(ID_ISAR6, SPECRES, 16, 4) 2135 FIELD(ID_ISAR6, BF16, 20, 4) 2136 FIELD(ID_ISAR6, I8MM, 24, 4) 2137 2138 FIELD(ID_MMFR0, VMSA, 0, 4) 2139 FIELD(ID_MMFR0, PMSA, 4, 4) 2140 FIELD(ID_MMFR0, OUTERSHR, 8, 4) 2141 FIELD(ID_MMFR0, SHARELVL, 12, 4) 2142 FIELD(ID_MMFR0, TCM, 16, 4) 2143 FIELD(ID_MMFR0, AUXREG, 20, 4) 2144 FIELD(ID_MMFR0, FCSE, 24, 4) 2145 FIELD(ID_MMFR0, INNERSHR, 28, 4) 2146 2147 FIELD(ID_MMFR1, L1HVDVA, 0, 4) 2148 FIELD(ID_MMFR1, L1UNIVA, 4, 4) 2149 FIELD(ID_MMFR1, L1HVDSW, 8, 4) 2150 FIELD(ID_MMFR1, L1UNISW, 12, 4) 2151 FIELD(ID_MMFR1, L1HVD, 16, 4) 2152 FIELD(ID_MMFR1, L1UNI, 20, 4) 2153 FIELD(ID_MMFR1, L1TSTCLN, 24, 4) 2154 FIELD(ID_MMFR1, BPRED, 28, 4) 2155 2156 FIELD(ID_MMFR2, L1HVDFG, 0, 4) 2157 FIELD(ID_MMFR2, L1HVDBG, 4, 4) 2158 FIELD(ID_MMFR2, L1HVDRNG, 8, 4) 2159 FIELD(ID_MMFR2, HVDTLB, 12, 4) 2160 FIELD(ID_MMFR2, UNITLB, 16, 4) 2161 FIELD(ID_MMFR2, MEMBARR, 20, 4) 2162 FIELD(ID_MMFR2, WFISTALL, 24, 4) 2163 FIELD(ID_MMFR2, HWACCFLG, 28, 4) 2164 2165 FIELD(ID_MMFR3, CMAINTVA, 0, 4) 2166 FIELD(ID_MMFR3, CMAINTSW, 4, 4) 2167 FIELD(ID_MMFR3, BPMAINT, 8, 4) 2168 FIELD(ID_MMFR3, MAINTBCST, 12, 4) 2169 FIELD(ID_MMFR3, PAN, 16, 4) 2170 FIELD(ID_MMFR3, COHWALK, 20, 4) 2171 FIELD(ID_MMFR3, CMEMSZ, 24, 4) 2172 FIELD(ID_MMFR3, SUPERSEC, 28, 4) 2173 2174 FIELD(ID_MMFR4, SPECSEI, 0, 4) 2175 FIELD(ID_MMFR4, AC2, 4, 4) 2176 FIELD(ID_MMFR4, XNX, 8, 4) 2177 FIELD(ID_MMFR4, CNP, 12, 4) 2178 FIELD(ID_MMFR4, HPDS, 16, 4) 2179 FIELD(ID_MMFR4, LSM, 20, 4) 2180 FIELD(ID_MMFR4, CCIDX, 24, 4) 2181 FIELD(ID_MMFR4, EVT, 28, 4) 2182 2183 FIELD(ID_MMFR5, ETS, 0, 4) 2184 FIELD(ID_MMFR5, NTLBPA, 4, 4) 2185 2186 FIELD(ID_PFR0, STATE0, 0, 4) 2187 FIELD(ID_PFR0, STATE1, 4, 4) 2188 FIELD(ID_PFR0, STATE2, 8, 4) 2189 FIELD(ID_PFR0, STATE3, 12, 4) 2190 FIELD(ID_PFR0, CSV2, 16, 4) 2191 FIELD(ID_PFR0, AMU, 20, 4) 2192 FIELD(ID_PFR0, DIT, 24, 4) 2193 FIELD(ID_PFR0, RAS, 28, 4) 2194 2195 FIELD(ID_PFR1, PROGMOD, 0, 4) 2196 FIELD(ID_PFR1, SECURITY, 4, 4) 2197 FIELD(ID_PFR1, MPROGMOD, 8, 4) 2198 FIELD(ID_PFR1, VIRTUALIZATION, 12, 4) 2199 FIELD(ID_PFR1, GENTIMER, 16, 4) 2200 FIELD(ID_PFR1, SEC_FRAC, 20, 4) 2201 FIELD(ID_PFR1, VIRT_FRAC, 24, 4) 2202 FIELD(ID_PFR1, GIC, 28, 4) 2203 2204 FIELD(ID_PFR2, CSV3, 0, 4) 2205 FIELD(ID_PFR2, SSBS, 4, 4) 2206 FIELD(ID_PFR2, RAS_FRAC, 8, 4) 2207 2208 FIELD(ID_AA64ISAR0, AES, 4, 4) 2209 FIELD(ID_AA64ISAR0, SHA1, 8, 4) 2210 FIELD(ID_AA64ISAR0, SHA2, 12, 4) 2211 FIELD(ID_AA64ISAR0, CRC32, 16, 4) 2212 FIELD(ID_AA64ISAR0, ATOMIC, 20, 4) 2213 FIELD(ID_AA64ISAR0, TME, 24, 4) 2214 FIELD(ID_AA64ISAR0, RDM, 28, 4) 2215 FIELD(ID_AA64ISAR0, SHA3, 32, 4) 2216 FIELD(ID_AA64ISAR0, SM3, 36, 4) 2217 FIELD(ID_AA64ISAR0, SM4, 40, 4) 2218 FIELD(ID_AA64ISAR0, DP, 44, 4) 2219 FIELD(ID_AA64ISAR0, FHM, 48, 4) 2220 FIELD(ID_AA64ISAR0, TS, 52, 4) 2221 FIELD(ID_AA64ISAR0, TLB, 56, 4) 2222 FIELD(ID_AA64ISAR0, RNDR, 60, 4) 2223 2224 FIELD(ID_AA64ISAR1, DPB, 0, 4) 2225 FIELD(ID_AA64ISAR1, APA, 4, 4) 2226 FIELD(ID_AA64ISAR1, API, 8, 4) 2227 FIELD(ID_AA64ISAR1, JSCVT, 12, 4) 2228 FIELD(ID_AA64ISAR1, FCMA, 16, 4) 2229 FIELD(ID_AA64ISAR1, LRCPC, 20, 4) 2230 FIELD(ID_AA64ISAR1, GPA, 24, 4) 2231 FIELD(ID_AA64ISAR1, GPI, 28, 4) 2232 FIELD(ID_AA64ISAR1, FRINTTS, 32, 4) 2233 FIELD(ID_AA64ISAR1, SB, 36, 4) 2234 FIELD(ID_AA64ISAR1, SPECRES, 40, 4) 2235 FIELD(ID_AA64ISAR1, BF16, 44, 4) 2236 FIELD(ID_AA64ISAR1, DGH, 48, 4) 2237 FIELD(ID_AA64ISAR1, I8MM, 52, 4) 2238 FIELD(ID_AA64ISAR1, XS, 56, 4) 2239 FIELD(ID_AA64ISAR1, LS64, 60, 4) 2240 2241 FIELD(ID_AA64ISAR2, WFXT, 0, 4) 2242 FIELD(ID_AA64ISAR2, RPRES, 4, 4) 2243 FIELD(ID_AA64ISAR2, GPA3, 8, 4) 2244 FIELD(ID_AA64ISAR2, APA3, 12, 4) 2245 FIELD(ID_AA64ISAR2, MOPS, 16, 4) 2246 FIELD(ID_AA64ISAR2, BC, 20, 4) 2247 FIELD(ID_AA64ISAR2, PAC_FRAC, 24, 4) 2248 FIELD(ID_AA64ISAR2, CLRBHB, 28, 4) 2249 FIELD(ID_AA64ISAR2, SYSREG_128, 32, 4) 2250 FIELD(ID_AA64ISAR2, SYSINSTR_128, 36, 4) 2251 FIELD(ID_AA64ISAR2, PRFMSLC, 40, 4) 2252 FIELD(ID_AA64ISAR2, RPRFM, 48, 4) 2253 FIELD(ID_AA64ISAR2, CSSC, 52, 4) 2254 FIELD(ID_AA64ISAR2, ATS1A, 60, 4) 2255 2256 FIELD(ID_AA64PFR0, EL0, 0, 4) 2257 FIELD(ID_AA64PFR0, EL1, 4, 4) 2258 FIELD(ID_AA64PFR0, EL2, 8, 4) 2259 FIELD(ID_AA64PFR0, EL3, 12, 4) 2260 FIELD(ID_AA64PFR0, FP, 16, 4) 2261 FIELD(ID_AA64PFR0, ADVSIMD, 20, 4) 2262 FIELD(ID_AA64PFR0, GIC, 24, 4) 2263 FIELD(ID_AA64PFR0, RAS, 28, 4) 2264 FIELD(ID_AA64PFR0, SVE, 32, 4) 2265 FIELD(ID_AA64PFR0, SEL2, 36, 4) 2266 FIELD(ID_AA64PFR0, MPAM, 40, 4) 2267 FIELD(ID_AA64PFR0, AMU, 44, 4) 2268 FIELD(ID_AA64PFR0, DIT, 48, 4) 2269 FIELD(ID_AA64PFR0, RME, 52, 4) 2270 FIELD(ID_AA64PFR0, CSV2, 56, 4) 2271 FIELD(ID_AA64PFR0, CSV3, 60, 4) 2272 2273 FIELD(ID_AA64PFR1, BT, 0, 4) 2274 FIELD(ID_AA64PFR1, SSBS, 4, 4) 2275 FIELD(ID_AA64PFR1, MTE, 8, 4) 2276 FIELD(ID_AA64PFR1, RAS_FRAC, 12, 4) 2277 FIELD(ID_AA64PFR1, MPAM_FRAC, 16, 4) 2278 FIELD(ID_AA64PFR1, SME, 24, 4) 2279 FIELD(ID_AA64PFR1, RNDR_TRAP, 28, 4) 2280 FIELD(ID_AA64PFR1, CSV2_FRAC, 32, 4) 2281 FIELD(ID_AA64PFR1, NMI, 36, 4) 2282 FIELD(ID_AA64PFR1, MTE_FRAC, 40, 4) 2283 FIELD(ID_AA64PFR1, GCS, 44, 4) 2284 FIELD(ID_AA64PFR1, THE, 48, 4) 2285 FIELD(ID_AA64PFR1, MTEX, 52, 4) 2286 FIELD(ID_AA64PFR1, DF2, 56, 4) 2287 FIELD(ID_AA64PFR1, PFAR, 60, 4) 2288 2289 FIELD(ID_AA64MMFR0, PARANGE, 0, 4) 2290 FIELD(ID_AA64MMFR0, ASIDBITS, 4, 4) 2291 FIELD(ID_AA64MMFR0, BIGEND, 8, 4) 2292 FIELD(ID_AA64MMFR0, SNSMEM, 12, 4) 2293 FIELD(ID_AA64MMFR0, BIGENDEL0, 16, 4) 2294 FIELD(ID_AA64MMFR0, TGRAN16, 20, 4) 2295 FIELD(ID_AA64MMFR0, TGRAN64, 24, 4) 2296 FIELD(ID_AA64MMFR0, TGRAN4, 28, 4) 2297 FIELD(ID_AA64MMFR0, TGRAN16_2, 32, 4) 2298 FIELD(ID_AA64MMFR0, TGRAN64_2, 36, 4) 2299 FIELD(ID_AA64MMFR0, TGRAN4_2, 40, 4) 2300 FIELD(ID_AA64MMFR0, EXS, 44, 4) 2301 FIELD(ID_AA64MMFR0, FGT, 56, 4) 2302 FIELD(ID_AA64MMFR0, ECV, 60, 4) 2303 2304 FIELD(ID_AA64MMFR1, HAFDBS, 0, 4) 2305 FIELD(ID_AA64MMFR1, VMIDBITS, 4, 4) 2306 FIELD(ID_AA64MMFR1, VH, 8, 4) 2307 FIELD(ID_AA64MMFR1, HPDS, 12, 4) 2308 FIELD(ID_AA64MMFR1, LO, 16, 4) 2309 FIELD(ID_AA64MMFR1, PAN, 20, 4) 2310 FIELD(ID_AA64MMFR1, SPECSEI, 24, 4) 2311 FIELD(ID_AA64MMFR1, XNX, 28, 4) 2312 FIELD(ID_AA64MMFR1, TWED, 32, 4) 2313 FIELD(ID_AA64MMFR1, ETS, 36, 4) 2314 FIELD(ID_AA64MMFR1, HCX, 40, 4) 2315 FIELD(ID_AA64MMFR1, AFP, 44, 4) 2316 FIELD(ID_AA64MMFR1, NTLBPA, 48, 4) 2317 FIELD(ID_AA64MMFR1, TIDCP1, 52, 4) 2318 FIELD(ID_AA64MMFR1, CMOW, 56, 4) 2319 FIELD(ID_AA64MMFR1, ECBHB, 60, 4) 2320 2321 FIELD(ID_AA64MMFR2, CNP, 0, 4) 2322 FIELD(ID_AA64MMFR2, UAO, 4, 4) 2323 FIELD(ID_AA64MMFR2, LSM, 8, 4) 2324 FIELD(ID_AA64MMFR2, IESB, 12, 4) 2325 FIELD(ID_AA64MMFR2, VARANGE, 16, 4) 2326 FIELD(ID_AA64MMFR2, CCIDX, 20, 4) 2327 FIELD(ID_AA64MMFR2, NV, 24, 4) 2328 FIELD(ID_AA64MMFR2, ST, 28, 4) 2329 FIELD(ID_AA64MMFR2, AT, 32, 4) 2330 FIELD(ID_AA64MMFR2, IDS, 36, 4) 2331 FIELD(ID_AA64MMFR2, FWB, 40, 4) 2332 FIELD(ID_AA64MMFR2, TTL, 48, 4) 2333 FIELD(ID_AA64MMFR2, BBM, 52, 4) 2334 FIELD(ID_AA64MMFR2, EVT, 56, 4) 2335 FIELD(ID_AA64MMFR2, E0PD, 60, 4) 2336 2337 FIELD(ID_AA64DFR0, DEBUGVER, 0, 4) 2338 FIELD(ID_AA64DFR0, TRACEVER, 4, 4) 2339 FIELD(ID_AA64DFR0, PMUVER, 8, 4) 2340 FIELD(ID_AA64DFR0, BRPS, 12, 4) 2341 FIELD(ID_AA64DFR0, PMSS, 16, 4) 2342 FIELD(ID_AA64DFR0, WRPS, 20, 4) 2343 FIELD(ID_AA64DFR0, SEBEP, 24, 4) 2344 FIELD(ID_AA64DFR0, CTX_CMPS, 28, 4) 2345 FIELD(ID_AA64DFR0, PMSVER, 32, 4) 2346 FIELD(ID_AA64DFR0, DOUBLELOCK, 36, 4) 2347 FIELD(ID_AA64DFR0, TRACEFILT, 40, 4) 2348 FIELD(ID_AA64DFR0, TRACEBUFFER, 44, 4) 2349 FIELD(ID_AA64DFR0, MTPMU, 48, 4) 2350 FIELD(ID_AA64DFR0, BRBE, 52, 4) 2351 FIELD(ID_AA64DFR0, EXTTRCBUFF, 56, 4) 2352 FIELD(ID_AA64DFR0, HPMN0, 60, 4) 2353 2354 FIELD(ID_AA64ZFR0, SVEVER, 0, 4) 2355 FIELD(ID_AA64ZFR0, AES, 4, 4) 2356 FIELD(ID_AA64ZFR0, BITPERM, 16, 4) 2357 FIELD(ID_AA64ZFR0, BFLOAT16, 20, 4) 2358 FIELD(ID_AA64ZFR0, B16B16, 24, 4) 2359 FIELD(ID_AA64ZFR0, SHA3, 32, 4) 2360 FIELD(ID_AA64ZFR0, SM4, 40, 4) 2361 FIELD(ID_AA64ZFR0, I8MM, 44, 4) 2362 FIELD(ID_AA64ZFR0, F32MM, 52, 4) 2363 FIELD(ID_AA64ZFR0, F64MM, 56, 4) 2364 2365 FIELD(ID_AA64SMFR0, F32F32, 32, 1) 2366 FIELD(ID_AA64SMFR0, BI32I32, 33, 1) 2367 FIELD(ID_AA64SMFR0, B16F32, 34, 1) 2368 FIELD(ID_AA64SMFR0, F16F32, 35, 1) 2369 FIELD(ID_AA64SMFR0, I8I32, 36, 4) 2370 FIELD(ID_AA64SMFR0, F16F16, 42, 1) 2371 FIELD(ID_AA64SMFR0, B16B16, 43, 1) 2372 FIELD(ID_AA64SMFR0, I16I32, 44, 4) 2373 FIELD(ID_AA64SMFR0, F64F64, 48, 1) 2374 FIELD(ID_AA64SMFR0, I16I64, 52, 4) 2375 FIELD(ID_AA64SMFR0, SMEVER, 56, 4) 2376 FIELD(ID_AA64SMFR0, FA64, 63, 1) 2377 2378 FIELD(ID_DFR0, COPDBG, 0, 4) 2379 FIELD(ID_DFR0, COPSDBG, 4, 4) 2380 FIELD(ID_DFR0, MMAPDBG, 8, 4) 2381 FIELD(ID_DFR0, COPTRC, 12, 4) 2382 FIELD(ID_DFR0, MMAPTRC, 16, 4) 2383 FIELD(ID_DFR0, MPROFDBG, 20, 4) 2384 FIELD(ID_DFR0, PERFMON, 24, 4) 2385 FIELD(ID_DFR0, TRACEFILT, 28, 4) 2386 2387 FIELD(ID_DFR1, MTPMU, 0, 4) 2388 FIELD(ID_DFR1, HPMN0, 4, 4) 2389 2390 FIELD(DBGDIDR, SE_IMP, 12, 1) 2391 FIELD(DBGDIDR, NSUHD_IMP, 14, 1) 2392 FIELD(DBGDIDR, VERSION, 16, 4) 2393 FIELD(DBGDIDR, CTX_CMPS, 20, 4) 2394 FIELD(DBGDIDR, BRPS, 24, 4) 2395 FIELD(DBGDIDR, WRPS, 28, 4) 2396 2397 FIELD(DBGDEVID, PCSAMPLE, 0, 4) 2398 FIELD(DBGDEVID, WPADDRMASK, 4, 4) 2399 FIELD(DBGDEVID, BPADDRMASK, 8, 4) 2400 FIELD(DBGDEVID, VECTORCATCH, 12, 4) 2401 FIELD(DBGDEVID, VIRTEXTNS, 16, 4) 2402 FIELD(DBGDEVID, DOUBLELOCK, 20, 4) 2403 FIELD(DBGDEVID, AUXREGS, 24, 4) 2404 FIELD(DBGDEVID, CIDMASK, 28, 4) 2405 2406 FIELD(MVFR0, SIMDREG, 0, 4) 2407 FIELD(MVFR0, FPSP, 4, 4) 2408 FIELD(MVFR0, FPDP, 8, 4) 2409 FIELD(MVFR0, FPTRAP, 12, 4) 2410 FIELD(MVFR0, FPDIVIDE, 16, 4) 2411 FIELD(MVFR0, FPSQRT, 20, 4) 2412 FIELD(MVFR0, FPSHVEC, 24, 4) 2413 FIELD(MVFR0, FPROUND, 28, 4) 2414 2415 FIELD(MVFR1, FPFTZ, 0, 4) 2416 FIELD(MVFR1, FPDNAN, 4, 4) 2417 FIELD(MVFR1, SIMDLS, 8, 4) /* A-profile only */ 2418 FIELD(MVFR1, SIMDINT, 12, 4) /* A-profile only */ 2419 FIELD(MVFR1, SIMDSP, 16, 4) /* A-profile only */ 2420 FIELD(MVFR1, SIMDHP, 20, 4) /* A-profile only */ 2421 FIELD(MVFR1, MVE, 8, 4) /* M-profile only */ 2422 FIELD(MVFR1, FP16, 20, 4) /* M-profile only */ 2423 FIELD(MVFR1, FPHP, 24, 4) 2424 FIELD(MVFR1, SIMDFMAC, 28, 4) 2425 2426 FIELD(MVFR2, SIMDMISC, 0, 4) 2427 FIELD(MVFR2, FPMISC, 4, 4) 2428 2429 FIELD(GPCCR, PPS, 0, 3) 2430 FIELD(GPCCR, IRGN, 8, 2) 2431 FIELD(GPCCR, ORGN, 10, 2) 2432 FIELD(GPCCR, SH, 12, 2) 2433 FIELD(GPCCR, PGS, 14, 2) 2434 FIELD(GPCCR, GPC, 16, 1) 2435 FIELD(GPCCR, GPCP, 17, 1) 2436 FIELD(GPCCR, L0GPTSZ, 20, 4) 2437 2438 FIELD(MFAR, FPA, 12, 40) 2439 FIELD(MFAR, NSE, 62, 1) 2440 FIELD(MFAR, NS, 63, 1) 2441 2442 QEMU_BUILD_BUG_ON(ARRAY_SIZE(((ARMCPU *)0)->ccsidr) <= R_V7M_CSSELR_INDEX_MASK); 2443 2444 /* If adding a feature bit which corresponds to a Linux ELF 2445 * HWCAP bit, remember to update the feature-bit-to-hwcap 2446 * mapping in linux-user/elfload.c:get_elf_hwcap(). 2447 */ 2448 enum arm_features { 2449 ARM_FEATURE_AUXCR, /* ARM1026 Auxiliary control register. */ 2450 ARM_FEATURE_XSCALE, /* Intel XScale extensions. */ 2451 ARM_FEATURE_IWMMXT, /* Intel iwMMXt extension. */ 2452 ARM_FEATURE_V6, 2453 ARM_FEATURE_V6K, 2454 ARM_FEATURE_V7, 2455 ARM_FEATURE_THUMB2, 2456 ARM_FEATURE_PMSA, /* no MMU; may have Memory Protection Unit */ 2457 ARM_FEATURE_NEON, 2458 ARM_FEATURE_M, /* Microcontroller profile. */ 2459 ARM_FEATURE_OMAPCP, /* OMAP specific CP15 ops handling. */ 2460 ARM_FEATURE_THUMB2EE, 2461 ARM_FEATURE_V7MP, /* v7 Multiprocessing Extensions */ 2462 ARM_FEATURE_V7VE, /* v7 Virtualization Extensions (non-EL2 parts) */ 2463 ARM_FEATURE_V4T, 2464 ARM_FEATURE_V5, 2465 ARM_FEATURE_STRONGARM, 2466 ARM_FEATURE_VAPA, /* cp15 VA to PA lookups */ 2467 ARM_FEATURE_GENERIC_TIMER, 2468 ARM_FEATURE_MVFR, /* Media and VFP Feature Registers 0 and 1 */ 2469 ARM_FEATURE_DUMMY_C15_REGS, /* RAZ/WI all of cp15 crn=15 */ 2470 ARM_FEATURE_CACHE_TEST_CLEAN, /* 926/1026 style test-and-clean ops */ 2471 ARM_FEATURE_CACHE_DIRTY_REG, /* 1136/1176 cache dirty status register */ 2472 ARM_FEATURE_CACHE_BLOCK_OPS, /* v6 optional cache block operations */ 2473 ARM_FEATURE_MPIDR, /* has cp15 MPIDR */ 2474 ARM_FEATURE_LPAE, /* has Large Physical Address Extension */ 2475 ARM_FEATURE_V8, 2476 ARM_FEATURE_AARCH64, /* supports 64 bit mode */ 2477 ARM_FEATURE_CBAR, /* has cp15 CBAR */ 2478 ARM_FEATURE_CBAR_RO, /* has cp15 CBAR and it is read-only */ 2479 ARM_FEATURE_EL2, /* has EL2 Virtualization support */ 2480 ARM_FEATURE_EL3, /* has EL3 Secure monitor support */ 2481 ARM_FEATURE_THUMB_DSP, /* DSP insns supported in the Thumb encodings */ 2482 ARM_FEATURE_PMU, /* has PMU support */ 2483 ARM_FEATURE_VBAR, /* has cp15 VBAR */ 2484 ARM_FEATURE_M_SECURITY, /* M profile Security Extension */ 2485 ARM_FEATURE_M_MAIN, /* M profile Main Extension */ 2486 ARM_FEATURE_V8_1M, /* M profile extras only in v8.1M and later */ 2487 }; 2488 2489 static inline int arm_feature(CPUARMState *env, int feature) 2490 { 2491 return (env->features & (1ULL << feature)) != 0; 2492 } 2493 2494 void arm_cpu_finalize_features(ARMCPU *cpu, Error **errp); 2495 2496 /* 2497 * ARM v9 security states. 2498 * The ordering of the enumeration corresponds to the low 2 bits 2499 * of the GPI value, and (except for Root) the concat of NSE:NS. 2500 */ 2501 2502 typedef enum ARMSecuritySpace { 2503 ARMSS_Secure = 0, 2504 ARMSS_NonSecure = 1, 2505 ARMSS_Root = 2, 2506 ARMSS_Realm = 3, 2507 } ARMSecuritySpace; 2508 2509 /* Return true if @space is secure, in the pre-v9 sense. */ 2510 static inline bool arm_space_is_secure(ARMSecuritySpace space) 2511 { 2512 return space == ARMSS_Secure || space == ARMSS_Root; 2513 } 2514 2515 /* Return the ARMSecuritySpace for @secure, assuming !RME or EL[0-2]. */ 2516 static inline ARMSecuritySpace arm_secure_to_space(bool secure) 2517 { 2518 return secure ? ARMSS_Secure : ARMSS_NonSecure; 2519 } 2520 2521 #if !defined(CONFIG_USER_ONLY) 2522 /** 2523 * arm_security_space_below_el3: 2524 * @env: cpu context 2525 * 2526 * Return the security space of exception levels below EL3, following 2527 * an exception return to those levels. Unlike arm_security_space, 2528 * this doesn't care about the current EL. 2529 */ 2530 ARMSecuritySpace arm_security_space_below_el3(CPUARMState *env); 2531 2532 /** 2533 * arm_is_secure_below_el3: 2534 * @env: cpu context 2535 * 2536 * Return true if exception levels below EL3 are in secure state, 2537 * or would be following an exception return to those levels. 2538 */ 2539 static inline bool arm_is_secure_below_el3(CPUARMState *env) 2540 { 2541 ARMSecuritySpace ss = arm_security_space_below_el3(env); 2542 return ss == ARMSS_Secure; 2543 } 2544 2545 /* Return true if the CPU is AArch64 EL3 or AArch32 Mon */ 2546 static inline bool arm_is_el3_or_mon(CPUARMState *env) 2547 { 2548 assert(!arm_feature(env, ARM_FEATURE_M)); 2549 if (arm_feature(env, ARM_FEATURE_EL3)) { 2550 if (is_a64(env) && extract32(env->pstate, 2, 2) == 3) { 2551 /* CPU currently in AArch64 state and EL3 */ 2552 return true; 2553 } else if (!is_a64(env) && 2554 (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON) { 2555 /* CPU currently in AArch32 state and monitor mode */ 2556 return true; 2557 } 2558 } 2559 return false; 2560 } 2561 2562 /** 2563 * arm_security_space: 2564 * @env: cpu context 2565 * 2566 * Return the current security space of the cpu. 2567 */ 2568 ARMSecuritySpace arm_security_space(CPUARMState *env); 2569 2570 /** 2571 * arm_is_secure: 2572 * @env: cpu context 2573 * 2574 * Return true if the processor is in secure state. 2575 */ 2576 static inline bool arm_is_secure(CPUARMState *env) 2577 { 2578 return arm_space_is_secure(arm_security_space(env)); 2579 } 2580 2581 /* 2582 * Return true if the current security state has AArch64 EL2 or AArch32 Hyp. 2583 * This corresponds to the pseudocode EL2Enabled(). 2584 */ 2585 static inline bool arm_is_el2_enabled_secstate(CPUARMState *env, 2586 ARMSecuritySpace space) 2587 { 2588 assert(space != ARMSS_Root); 2589 return arm_feature(env, ARM_FEATURE_EL2) 2590 && (space != ARMSS_Secure || (env->cp15.scr_el3 & SCR_EEL2)); 2591 } 2592 2593 static inline bool arm_is_el2_enabled(CPUARMState *env) 2594 { 2595 return arm_is_el2_enabled_secstate(env, arm_security_space_below_el3(env)); 2596 } 2597 2598 #else 2599 static inline ARMSecuritySpace arm_security_space_below_el3(CPUARMState *env) 2600 { 2601 return ARMSS_NonSecure; 2602 } 2603 2604 static inline bool arm_is_secure_below_el3(CPUARMState *env) 2605 { 2606 return false; 2607 } 2608 2609 static inline ARMSecuritySpace arm_security_space(CPUARMState *env) 2610 { 2611 return ARMSS_NonSecure; 2612 } 2613 2614 static inline bool arm_is_secure(CPUARMState *env) 2615 { 2616 return false; 2617 } 2618 2619 static inline bool arm_is_el2_enabled_secstate(CPUARMState *env, 2620 ARMSecuritySpace space) 2621 { 2622 return false; 2623 } 2624 2625 static inline bool arm_is_el2_enabled(CPUARMState *env) 2626 { 2627 return false; 2628 } 2629 #endif 2630 2631 /** 2632 * arm_hcr_el2_eff(): Return the effective value of HCR_EL2. 2633 * E.g. when in secure state, fields in HCR_EL2 are suppressed, 2634 * "for all purposes other than a direct read or write access of HCR_EL2." 2635 * Not included here is HCR_RW. 2636 */ 2637 uint64_t arm_hcr_el2_eff_secstate(CPUARMState *env, ARMSecuritySpace space); 2638 uint64_t arm_hcr_el2_eff(CPUARMState *env); 2639 uint64_t arm_hcrx_el2_eff(CPUARMState *env); 2640 2641 /* Return true if the specified exception level is running in AArch64 state. */ 2642 static inline bool arm_el_is_aa64(CPUARMState *env, int el) 2643 { 2644 /* This isn't valid for EL0 (if we're in EL0, is_a64() is what you want, 2645 * and if we're not in EL0 then the state of EL0 isn't well defined.) 2646 */ 2647 assert(el >= 1 && el <= 3); 2648 bool aa64 = arm_feature(env, ARM_FEATURE_AARCH64); 2649 2650 /* The highest exception level is always at the maximum supported 2651 * register width, and then lower levels have a register width controlled 2652 * by bits in the SCR or HCR registers. 2653 */ 2654 if (el == 3) { 2655 return aa64; 2656 } 2657 2658 if (arm_feature(env, ARM_FEATURE_EL3) && 2659 ((env->cp15.scr_el3 & SCR_NS) || !(env->cp15.scr_el3 & SCR_EEL2))) { 2660 aa64 = aa64 && (env->cp15.scr_el3 & SCR_RW); 2661 } 2662 2663 if (el == 2) { 2664 return aa64; 2665 } 2666 2667 if (arm_is_el2_enabled(env)) { 2668 aa64 = aa64 && (env->cp15.hcr_el2 & HCR_RW); 2669 } 2670 2671 return aa64; 2672 } 2673 2674 /* Function for determining whether guest cp register reads and writes should 2675 * access the secure or non-secure bank of a cp register. When EL3 is 2676 * operating in AArch32 state, the NS-bit determines whether the secure 2677 * instance of a cp register should be used. When EL3 is AArch64 (or if 2678 * it doesn't exist at all) then there is no register banking, and all 2679 * accesses are to the non-secure version. 2680 */ 2681 static inline bool access_secure_reg(CPUARMState *env) 2682 { 2683 bool ret = (arm_feature(env, ARM_FEATURE_EL3) && 2684 !arm_el_is_aa64(env, 3) && 2685 !(env->cp15.scr_el3 & SCR_NS)); 2686 2687 return ret; 2688 } 2689 2690 /* Macros for accessing a specified CP register bank */ 2691 #define A32_BANKED_REG_GET(_env, _regname, _secure) \ 2692 ((_secure) ? (_env)->cp15._regname##_s : (_env)->cp15._regname##_ns) 2693 2694 #define A32_BANKED_REG_SET(_env, _regname, _secure, _val) \ 2695 do { \ 2696 if (_secure) { \ 2697 (_env)->cp15._regname##_s = (_val); \ 2698 } else { \ 2699 (_env)->cp15._regname##_ns = (_val); \ 2700 } \ 2701 } while (0) 2702 2703 /* Macros for automatically accessing a specific CP register bank depending on 2704 * the current secure state of the system. These macros are not intended for 2705 * supporting instruction translation reads/writes as these are dependent 2706 * solely on the SCR.NS bit and not the mode. 2707 */ 2708 #define A32_BANKED_CURRENT_REG_GET(_env, _regname) \ 2709 A32_BANKED_REG_GET((_env), _regname, \ 2710 (arm_is_secure(_env) && !arm_el_is_aa64((_env), 3))) 2711 2712 #define A32_BANKED_CURRENT_REG_SET(_env, _regname, _val) \ 2713 A32_BANKED_REG_SET((_env), _regname, \ 2714 (arm_is_secure(_env) && !arm_el_is_aa64((_env), 3)), \ 2715 (_val)) 2716 2717 uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx, 2718 uint32_t cur_el, bool secure); 2719 2720 /* Return the highest implemented Exception Level */ 2721 static inline int arm_highest_el(CPUARMState *env) 2722 { 2723 if (arm_feature(env, ARM_FEATURE_EL3)) { 2724 return 3; 2725 } 2726 if (arm_feature(env, ARM_FEATURE_EL2)) { 2727 return 2; 2728 } 2729 return 1; 2730 } 2731 2732 /* Return true if a v7M CPU is in Handler mode */ 2733 static inline bool arm_v7m_is_handler_mode(CPUARMState *env) 2734 { 2735 return env->v7m.exception != 0; 2736 } 2737 2738 /* Return the current Exception Level (as per ARMv8; note that this differs 2739 * from the ARMv7 Privilege Level). 2740 */ 2741 static inline int arm_current_el(CPUARMState *env) 2742 { 2743 if (arm_feature(env, ARM_FEATURE_M)) { 2744 return arm_v7m_is_handler_mode(env) || 2745 !(env->v7m.control[env->v7m.secure] & 1); 2746 } 2747 2748 if (is_a64(env)) { 2749 return extract32(env->pstate, 2, 2); 2750 } 2751 2752 switch (env->uncached_cpsr & 0x1f) { 2753 case ARM_CPU_MODE_USR: 2754 return 0; 2755 case ARM_CPU_MODE_HYP: 2756 return 2; 2757 case ARM_CPU_MODE_MON: 2758 return 3; 2759 default: 2760 if (arm_is_secure(env) && !arm_el_is_aa64(env, 3)) { 2761 /* If EL3 is 32-bit then all secure privileged modes run in 2762 * EL3 2763 */ 2764 return 3; 2765 } 2766 2767 return 1; 2768 } 2769 } 2770 2771 /** 2772 * write_list_to_cpustate 2773 * @cpu: ARMCPU 2774 * 2775 * For each register listed in the ARMCPU cpreg_indexes list, write 2776 * its value from the cpreg_values list into the ARMCPUState structure. 2777 * This updates TCG's working data structures from KVM data or 2778 * from incoming migration state. 2779 * 2780 * Returns: true if all register values were updated correctly, 2781 * false if some register was unknown or could not be written. 2782 * Note that we do not stop early on failure -- we will attempt 2783 * writing all registers in the list. 2784 */ 2785 bool write_list_to_cpustate(ARMCPU *cpu); 2786 2787 /** 2788 * write_cpustate_to_list: 2789 * @cpu: ARMCPU 2790 * @kvm_sync: true if this is for syncing back to KVM 2791 * 2792 * For each register listed in the ARMCPU cpreg_indexes list, write 2793 * its value from the ARMCPUState structure into the cpreg_values list. 2794 * This is used to copy info from TCG's working data structures into 2795 * KVM or for outbound migration. 2796 * 2797 * @kvm_sync is true if we are doing this in order to sync the 2798 * register state back to KVM. In this case we will only update 2799 * values in the list if the previous list->cpustate sync actually 2800 * successfully wrote the CPU state. Otherwise we will keep the value 2801 * that is in the list. 2802 * 2803 * Returns: true if all register values were read correctly, 2804 * false if some register was unknown or could not be read. 2805 * Note that we do not stop early on failure -- we will attempt 2806 * reading all registers in the list. 2807 */ 2808 bool write_cpustate_to_list(ARMCPU *cpu, bool kvm_sync); 2809 2810 #define ARM_CPUID_TI915T 0x54029152 2811 #define ARM_CPUID_TI925T 0x54029252 2812 2813 #define CPU_RESOLVING_TYPE TYPE_ARM_CPU 2814 2815 #define TYPE_ARM_HOST_CPU "host-" TYPE_ARM_CPU 2816 2817 /* ARM has the following "translation regimes" (as the ARM ARM calls them): 2818 * 2819 * If EL3 is 64-bit: 2820 * + NonSecure EL1 & 0 stage 1 2821 * + NonSecure EL1 & 0 stage 2 2822 * + NonSecure EL2 2823 * + NonSecure EL2 & 0 (ARMv8.1-VHE) 2824 * + Secure EL1 & 0 2825 * + Secure EL3 2826 * If EL3 is 32-bit: 2827 * + NonSecure PL1 & 0 stage 1 2828 * + NonSecure PL1 & 0 stage 2 2829 * + NonSecure PL2 2830 * + Secure PL0 2831 * + Secure PL1 2832 * (reminder: for 32 bit EL3, Secure PL1 is *EL3*, not EL1.) 2833 * 2834 * For QEMU, an mmu_idx is not quite the same as a translation regime because: 2835 * 1. we need to split the "EL1 & 0" and "EL2 & 0" regimes into two mmu_idxes, 2836 * because they may differ in access permissions even if the VA->PA map is 2837 * the same 2838 * 2. we want to cache in our TLB the full VA->IPA->PA lookup for a stage 1+2 2839 * translation, which means that we have one mmu_idx that deals with two 2840 * concatenated translation regimes [this sort of combined s1+2 TLB is 2841 * architecturally permitted] 2842 * 3. we don't need to allocate an mmu_idx to translations that we won't be 2843 * handling via the TLB. The only way to do a stage 1 translation without 2844 * the immediate stage 2 translation is via the ATS or AT system insns, 2845 * which can be slow-pathed and always do a page table walk. 2846 * The only use of stage 2 translations is either as part of an s1+2 2847 * lookup or when loading the descriptors during a stage 1 page table walk, 2848 * and in both those cases we don't use the TLB. 2849 * 4. we can also safely fold together the "32 bit EL3" and "64 bit EL3" 2850 * translation regimes, because they map reasonably well to each other 2851 * and they can't both be active at the same time. 2852 * 5. we want to be able to use the TLB for accesses done as part of a 2853 * stage1 page table walk, rather than having to walk the stage2 page 2854 * table over and over. 2855 * 6. we need separate EL1/EL2 mmu_idx for handling the Privileged Access 2856 * Never (PAN) bit within PSTATE. 2857 * 7. we fold together the secure and non-secure regimes for A-profile, 2858 * because there are no banked system registers for aarch64, so the 2859 * process of switching between secure and non-secure is 2860 * already heavyweight. 2861 * 2862 * This gives us the following list of cases: 2863 * 2864 * EL0 EL1&0 stage 1+2 (aka NS PL0) 2865 * EL1 EL1&0 stage 1+2 (aka NS PL1) 2866 * EL1 EL1&0 stage 1+2 +PAN 2867 * EL0 EL2&0 2868 * EL2 EL2&0 2869 * EL2 EL2&0 +PAN 2870 * EL2 (aka NS PL2) 2871 * EL3 (aka S PL1) 2872 * Physical (NS & S) 2873 * Stage2 (NS & S) 2874 * 2875 * for a total of 12 different mmu_idx. 2876 * 2877 * R profile CPUs have an MPU, but can use the same set of MMU indexes 2878 * as A profile. They only need to distinguish EL0 and EL1 (and 2879 * EL2 if we ever model a Cortex-R52). 2880 * 2881 * M profile CPUs are rather different as they do not have a true MMU. 2882 * They have the following different MMU indexes: 2883 * User 2884 * Privileged 2885 * User, execution priority negative (ie the MPU HFNMIENA bit may apply) 2886 * Privileged, execution priority negative (ditto) 2887 * If the CPU supports the v8M Security Extension then there are also: 2888 * Secure User 2889 * Secure Privileged 2890 * Secure User, execution priority negative 2891 * Secure Privileged, execution priority negative 2892 * 2893 * The ARMMMUIdx and the mmu index value used by the core QEMU TLB code 2894 * are not quite the same -- different CPU types (most notably M profile 2895 * vs A/R profile) would like to use MMU indexes with different semantics, 2896 * but since we don't ever need to use all of those in a single CPU we 2897 * can avoid having to set NB_MMU_MODES to "total number of A profile MMU 2898 * modes + total number of M profile MMU modes". The lower bits of 2899 * ARMMMUIdx are the core TLB mmu index, and the higher bits are always 2900 * the same for any particular CPU. 2901 * Variables of type ARMMUIdx are always full values, and the core 2902 * index values are in variables of type 'int'. 2903 * 2904 * Our enumeration includes at the end some entries which are not "true" 2905 * mmu_idx values in that they don't have corresponding TLBs and are only 2906 * valid for doing slow path page table walks. 2907 * 2908 * The constant names here are patterned after the general style of the names 2909 * of the AT/ATS operations. 2910 * The values used are carefully arranged to make mmu_idx => EL lookup easy. 2911 * For M profile we arrange them to have a bit for priv, a bit for negpri 2912 * and a bit for secure. 2913 */ 2914 #define ARM_MMU_IDX_A 0x10 /* A profile */ 2915 #define ARM_MMU_IDX_NOTLB 0x20 /* does not have a TLB */ 2916 #define ARM_MMU_IDX_M 0x40 /* M profile */ 2917 2918 /* Meanings of the bits for M profile mmu idx values */ 2919 #define ARM_MMU_IDX_M_PRIV 0x1 2920 #define ARM_MMU_IDX_M_NEGPRI 0x2 2921 #define ARM_MMU_IDX_M_S 0x4 /* Secure */ 2922 2923 #define ARM_MMU_IDX_TYPE_MASK \ 2924 (ARM_MMU_IDX_A | ARM_MMU_IDX_M | ARM_MMU_IDX_NOTLB) 2925 #define ARM_MMU_IDX_COREIDX_MASK 0xf 2926 2927 typedef enum ARMMMUIdx { 2928 /* 2929 * A-profile. 2930 */ 2931 ARMMMUIdx_E10_0 = 0 | ARM_MMU_IDX_A, 2932 ARMMMUIdx_E20_0 = 1 | ARM_MMU_IDX_A, 2933 ARMMMUIdx_E10_1 = 2 | ARM_MMU_IDX_A, 2934 ARMMMUIdx_E20_2 = 3 | ARM_MMU_IDX_A, 2935 ARMMMUIdx_E10_1_PAN = 4 | ARM_MMU_IDX_A, 2936 ARMMMUIdx_E20_2_PAN = 5 | ARM_MMU_IDX_A, 2937 ARMMMUIdx_E2 = 6 | ARM_MMU_IDX_A, 2938 ARMMMUIdx_E3 = 7 | ARM_MMU_IDX_A, 2939 2940 /* 2941 * Used for second stage of an S12 page table walk, or for descriptor 2942 * loads during first stage of an S1 page table walk. Note that both 2943 * are in use simultaneously for SecureEL2: the security state for 2944 * the S2 ptw is selected by the NS bit from the S1 ptw. 2945 */ 2946 ARMMMUIdx_Stage2_S = 8 | ARM_MMU_IDX_A, 2947 ARMMMUIdx_Stage2 = 9 | ARM_MMU_IDX_A, 2948 2949 /* TLBs with 1-1 mapping to the physical address spaces. */ 2950 ARMMMUIdx_Phys_S = 10 | ARM_MMU_IDX_A, 2951 ARMMMUIdx_Phys_NS = 11 | ARM_MMU_IDX_A, 2952 ARMMMUIdx_Phys_Root = 12 | ARM_MMU_IDX_A, 2953 ARMMMUIdx_Phys_Realm = 13 | ARM_MMU_IDX_A, 2954 2955 /* 2956 * These are not allocated TLBs and are used only for AT system 2957 * instructions or for the first stage of an S12 page table walk. 2958 */ 2959 ARMMMUIdx_Stage1_E0 = 0 | ARM_MMU_IDX_NOTLB, 2960 ARMMMUIdx_Stage1_E1 = 1 | ARM_MMU_IDX_NOTLB, 2961 ARMMMUIdx_Stage1_E1_PAN = 2 | ARM_MMU_IDX_NOTLB, 2962 2963 /* 2964 * M-profile. 2965 */ 2966 ARMMMUIdx_MUser = ARM_MMU_IDX_M, 2967 ARMMMUIdx_MPriv = ARM_MMU_IDX_M | ARM_MMU_IDX_M_PRIV, 2968 ARMMMUIdx_MUserNegPri = ARMMMUIdx_MUser | ARM_MMU_IDX_M_NEGPRI, 2969 ARMMMUIdx_MPrivNegPri = ARMMMUIdx_MPriv | ARM_MMU_IDX_M_NEGPRI, 2970 ARMMMUIdx_MSUser = ARMMMUIdx_MUser | ARM_MMU_IDX_M_S, 2971 ARMMMUIdx_MSPriv = ARMMMUIdx_MPriv | ARM_MMU_IDX_M_S, 2972 ARMMMUIdx_MSUserNegPri = ARMMMUIdx_MUserNegPri | ARM_MMU_IDX_M_S, 2973 ARMMMUIdx_MSPrivNegPri = ARMMMUIdx_MPrivNegPri | ARM_MMU_IDX_M_S, 2974 } ARMMMUIdx; 2975 2976 /* 2977 * Bit macros for the core-mmu-index values for each index, 2978 * for use when calling tlb_flush_by_mmuidx() and friends. 2979 */ 2980 #define TO_CORE_BIT(NAME) \ 2981 ARMMMUIdxBit_##NAME = 1 << (ARMMMUIdx_##NAME & ARM_MMU_IDX_COREIDX_MASK) 2982 2983 typedef enum ARMMMUIdxBit { 2984 TO_CORE_BIT(E10_0), 2985 TO_CORE_BIT(E20_0), 2986 TO_CORE_BIT(E10_1), 2987 TO_CORE_BIT(E10_1_PAN), 2988 TO_CORE_BIT(E2), 2989 TO_CORE_BIT(E20_2), 2990 TO_CORE_BIT(E20_2_PAN), 2991 TO_CORE_BIT(E3), 2992 TO_CORE_BIT(Stage2), 2993 TO_CORE_BIT(Stage2_S), 2994 2995 TO_CORE_BIT(MUser), 2996 TO_CORE_BIT(MPriv), 2997 TO_CORE_BIT(MUserNegPri), 2998 TO_CORE_BIT(MPrivNegPri), 2999 TO_CORE_BIT(MSUser), 3000 TO_CORE_BIT(MSPriv), 3001 TO_CORE_BIT(MSUserNegPri), 3002 TO_CORE_BIT(MSPrivNegPri), 3003 } ARMMMUIdxBit; 3004 3005 #undef TO_CORE_BIT 3006 3007 #define MMU_USER_IDX 0 3008 3009 /* Indexes used when registering address spaces with cpu_address_space_init */ 3010 typedef enum ARMASIdx { 3011 ARMASIdx_NS = 0, 3012 ARMASIdx_S = 1, 3013 ARMASIdx_TagNS = 2, 3014 ARMASIdx_TagS = 3, 3015 } ARMASIdx; 3016 3017 static inline ARMMMUIdx arm_space_to_phys(ARMSecuritySpace space) 3018 { 3019 /* Assert the relative order of the physical mmu indexes. */ 3020 QEMU_BUILD_BUG_ON(ARMSS_Secure != 0); 3021 QEMU_BUILD_BUG_ON(ARMMMUIdx_Phys_NS != ARMMMUIdx_Phys_S + ARMSS_NonSecure); 3022 QEMU_BUILD_BUG_ON(ARMMMUIdx_Phys_Root != ARMMMUIdx_Phys_S + ARMSS_Root); 3023 QEMU_BUILD_BUG_ON(ARMMMUIdx_Phys_Realm != ARMMMUIdx_Phys_S + ARMSS_Realm); 3024 3025 return ARMMMUIdx_Phys_S + space; 3026 } 3027 3028 static inline ARMSecuritySpace arm_phys_to_space(ARMMMUIdx idx) 3029 { 3030 assert(idx >= ARMMMUIdx_Phys_S && idx <= ARMMMUIdx_Phys_Realm); 3031 return idx - ARMMMUIdx_Phys_S; 3032 } 3033 3034 static inline bool arm_v7m_csselr_razwi(ARMCPU *cpu) 3035 { 3036 /* If all the CLIDR.Ctypem bits are 0 there are no caches, and 3037 * CSSELR is RAZ/WI. 3038 */ 3039 return (cpu->clidr & R_V7M_CLIDR_CTYPE_ALL_MASK) != 0; 3040 } 3041 3042 static inline bool arm_sctlr_b(CPUARMState *env) 3043 { 3044 return 3045 /* We need not implement SCTLR.ITD in user-mode emulation, so 3046 * let linux-user ignore the fact that it conflicts with SCTLR_B. 3047 * This lets people run BE32 binaries with "-cpu any". 3048 */ 3049 #ifndef CONFIG_USER_ONLY 3050 !arm_feature(env, ARM_FEATURE_V7) && 3051 #endif 3052 (env->cp15.sctlr_el[1] & SCTLR_B) != 0; 3053 } 3054 3055 uint64_t arm_sctlr(CPUARMState *env, int el); 3056 3057 static inline bool arm_cpu_data_is_big_endian_a32(CPUARMState *env, 3058 bool sctlr_b) 3059 { 3060 #ifdef CONFIG_USER_ONLY 3061 /* 3062 * In system mode, BE32 is modelled in line with the 3063 * architecture (as word-invariant big-endianness), where loads 3064 * and stores are done little endian but from addresses which 3065 * are adjusted by XORing with the appropriate constant. So the 3066 * endianness to use for the raw data access is not affected by 3067 * SCTLR.B. 3068 * In user mode, however, we model BE32 as byte-invariant 3069 * big-endianness (because user-only code cannot tell the 3070 * difference), and so we need to use a data access endianness 3071 * that depends on SCTLR.B. 3072 */ 3073 if (sctlr_b) { 3074 return true; 3075 } 3076 #endif 3077 /* In 32bit endianness is determined by looking at CPSR's E bit */ 3078 return env->uncached_cpsr & CPSR_E; 3079 } 3080 3081 static inline bool arm_cpu_data_is_big_endian_a64(int el, uint64_t sctlr) 3082 { 3083 return sctlr & (el ? SCTLR_EE : SCTLR_E0E); 3084 } 3085 3086 /* Return true if the processor is in big-endian mode. */ 3087 static inline bool arm_cpu_data_is_big_endian(CPUARMState *env) 3088 { 3089 if (!is_a64(env)) { 3090 return arm_cpu_data_is_big_endian_a32(env, arm_sctlr_b(env)); 3091 } else { 3092 int cur_el = arm_current_el(env); 3093 uint64_t sctlr = arm_sctlr(env, cur_el); 3094 return arm_cpu_data_is_big_endian_a64(cur_el, sctlr); 3095 } 3096 } 3097 3098 #include "exec/cpu-all.h" 3099 3100 /* 3101 * We have more than 32-bits worth of state per TB, so we split the data 3102 * between tb->flags and tb->cs_base, which is otherwise unused for ARM. 3103 * We collect these two parts in CPUARMTBFlags where they are named 3104 * flags and flags2 respectively. 3105 * 3106 * The flags that are shared between all execution modes, TBFLAG_ANY, 3107 * are stored in flags. The flags that are specific to a given mode 3108 * are stores in flags2. Since cs_base is sized on the configured 3109 * address size, flags2 always has 64-bits for A64, and a minimum of 3110 * 32-bits for A32 and M32. 3111 * 3112 * The bits for 32-bit A-profile and M-profile partially overlap: 3113 * 3114 * 31 23 11 10 0 3115 * +-------------+----------+----------------+ 3116 * | | | TBFLAG_A32 | 3117 * | TBFLAG_AM32 | +-----+----------+ 3118 * | | |TBFLAG_M32| 3119 * +-------------+----------------+----------+ 3120 * 31 23 6 5 0 3121 * 3122 * Unless otherwise noted, these bits are cached in env->hflags. 3123 */ 3124 FIELD(TBFLAG_ANY, AARCH64_STATE, 0, 1) 3125 FIELD(TBFLAG_ANY, SS_ACTIVE, 1, 1) 3126 FIELD(TBFLAG_ANY, PSTATE__SS, 2, 1) /* Not cached. */ 3127 FIELD(TBFLAG_ANY, BE_DATA, 3, 1) 3128 FIELD(TBFLAG_ANY, MMUIDX, 4, 4) 3129 /* Target EL if we take a floating-point-disabled exception */ 3130 FIELD(TBFLAG_ANY, FPEXC_EL, 8, 2) 3131 /* Memory operations require alignment: SCTLR_ELx.A or CCR.UNALIGN_TRP */ 3132 FIELD(TBFLAG_ANY, ALIGN_MEM, 10, 1) 3133 FIELD(TBFLAG_ANY, PSTATE__IL, 11, 1) 3134 FIELD(TBFLAG_ANY, FGT_ACTIVE, 12, 1) 3135 FIELD(TBFLAG_ANY, FGT_SVC, 13, 1) 3136 3137 /* 3138 * Bit usage when in AArch32 state, both A- and M-profile. 3139 */ 3140 FIELD(TBFLAG_AM32, CONDEXEC, 24, 8) /* Not cached. */ 3141 FIELD(TBFLAG_AM32, THUMB, 23, 1) /* Not cached. */ 3142 3143 /* 3144 * Bit usage when in AArch32 state, for A-profile only. 3145 */ 3146 FIELD(TBFLAG_A32, VECLEN, 0, 3) /* Not cached. */ 3147 FIELD(TBFLAG_A32, VECSTRIDE, 3, 2) /* Not cached. */ 3148 /* 3149 * We store the bottom two bits of the CPAR as TB flags and handle 3150 * checks on the other bits at runtime. This shares the same bits as 3151 * VECSTRIDE, which is OK as no XScale CPU has VFP. 3152 * Not cached, because VECLEN+VECSTRIDE are not cached. 3153 */ 3154 FIELD(TBFLAG_A32, XSCALE_CPAR, 5, 2) 3155 FIELD(TBFLAG_A32, VFPEN, 7, 1) /* Partially cached, minus FPEXC. */ 3156 FIELD(TBFLAG_A32, SCTLR__B, 8, 1) /* Cannot overlap with SCTLR_B */ 3157 FIELD(TBFLAG_A32, HSTR_ACTIVE, 9, 1) 3158 /* 3159 * Indicates whether cp register reads and writes by guest code should access 3160 * the secure or nonsecure bank of banked registers; note that this is not 3161 * the same thing as the current security state of the processor! 3162 */ 3163 FIELD(TBFLAG_A32, NS, 10, 1) 3164 /* 3165 * Indicates that SME Streaming mode is active, and SMCR_ELx.FA64 is not. 3166 * This requires an SME trap from AArch32 mode when using NEON. 3167 */ 3168 FIELD(TBFLAG_A32, SME_TRAP_NONSTREAMING, 11, 1) 3169 3170 /* 3171 * Bit usage when in AArch32 state, for M-profile only. 3172 */ 3173 /* Handler (ie not Thread) mode */ 3174 FIELD(TBFLAG_M32, HANDLER, 0, 1) 3175 /* Whether we should generate stack-limit checks */ 3176 FIELD(TBFLAG_M32, STACKCHECK, 1, 1) 3177 /* Set if FPCCR.LSPACT is set */ 3178 FIELD(TBFLAG_M32, LSPACT, 2, 1) /* Not cached. */ 3179 /* Set if we must create a new FP context */ 3180 FIELD(TBFLAG_M32, NEW_FP_CTXT_NEEDED, 3, 1) /* Not cached. */ 3181 /* Set if FPCCR.S does not match current security state */ 3182 FIELD(TBFLAG_M32, FPCCR_S_WRONG, 4, 1) /* Not cached. */ 3183 /* Set if MVE insns are definitely not predicated by VPR or LTPSIZE */ 3184 FIELD(TBFLAG_M32, MVE_NO_PRED, 5, 1) /* Not cached. */ 3185 /* Set if in secure mode */ 3186 FIELD(TBFLAG_M32, SECURE, 6, 1) 3187 3188 /* 3189 * Bit usage when in AArch64 state 3190 */ 3191 FIELD(TBFLAG_A64, TBII, 0, 2) 3192 FIELD(TBFLAG_A64, SVEEXC_EL, 2, 2) 3193 /* The current vector length, either NVL or SVL. */ 3194 FIELD(TBFLAG_A64, VL, 4, 4) 3195 FIELD(TBFLAG_A64, PAUTH_ACTIVE, 8, 1) 3196 FIELD(TBFLAG_A64, BT, 9, 1) 3197 FIELD(TBFLAG_A64, BTYPE, 10, 2) /* Not cached. */ 3198 FIELD(TBFLAG_A64, TBID, 12, 2) 3199 FIELD(TBFLAG_A64, UNPRIV, 14, 1) 3200 FIELD(TBFLAG_A64, ATA, 15, 1) 3201 FIELD(TBFLAG_A64, TCMA, 16, 2) 3202 FIELD(TBFLAG_A64, MTE_ACTIVE, 18, 1) 3203 FIELD(TBFLAG_A64, MTE0_ACTIVE, 19, 1) 3204 FIELD(TBFLAG_A64, SMEEXC_EL, 20, 2) 3205 FIELD(TBFLAG_A64, PSTATE_SM, 22, 1) 3206 FIELD(TBFLAG_A64, PSTATE_ZA, 23, 1) 3207 FIELD(TBFLAG_A64, SVL, 24, 4) 3208 /* Indicates that SME Streaming mode is active, and SMCR_ELx.FA64 is not. */ 3209 FIELD(TBFLAG_A64, SME_TRAP_NONSTREAMING, 28, 1) 3210 FIELD(TBFLAG_A64, TRAP_ERET, 29, 1) 3211 FIELD(TBFLAG_A64, NAA, 30, 1) 3212 FIELD(TBFLAG_A64, ATA0, 31, 1) 3213 FIELD(TBFLAG_A64, NV, 32, 1) 3214 FIELD(TBFLAG_A64, NV1, 33, 1) 3215 FIELD(TBFLAG_A64, NV2, 34, 1) 3216 /* Set if FEAT_NV2 RAM accesses use the EL2&0 translation regime */ 3217 FIELD(TBFLAG_A64, NV2_MEM_E20, 35, 1) 3218 /* Set if FEAT_NV2 RAM accesses are big-endian */ 3219 FIELD(TBFLAG_A64, NV2_MEM_BE, 36, 1) 3220 3221 /* 3222 * Helpers for using the above. Note that only the A64 accessors use 3223 * FIELD_DP64() and FIELD_EX64(), because in the other cases the flags 3224 * word either is or might be 32 bits only. 3225 */ 3226 #define DP_TBFLAG_ANY(DST, WHICH, VAL) \ 3227 (DST.flags = FIELD_DP32(DST.flags, TBFLAG_ANY, WHICH, VAL)) 3228 #define DP_TBFLAG_A64(DST, WHICH, VAL) \ 3229 (DST.flags2 = FIELD_DP64(DST.flags2, TBFLAG_A64, WHICH, VAL)) 3230 #define DP_TBFLAG_A32(DST, WHICH, VAL) \ 3231 (DST.flags2 = FIELD_DP32(DST.flags2, TBFLAG_A32, WHICH, VAL)) 3232 #define DP_TBFLAG_M32(DST, WHICH, VAL) \ 3233 (DST.flags2 = FIELD_DP32(DST.flags2, TBFLAG_M32, WHICH, VAL)) 3234 #define DP_TBFLAG_AM32(DST, WHICH, VAL) \ 3235 (DST.flags2 = FIELD_DP32(DST.flags2, TBFLAG_AM32, WHICH, VAL)) 3236 3237 #define EX_TBFLAG_ANY(IN, WHICH) FIELD_EX32(IN.flags, TBFLAG_ANY, WHICH) 3238 #define EX_TBFLAG_A64(IN, WHICH) FIELD_EX64(IN.flags2, TBFLAG_A64, WHICH) 3239 #define EX_TBFLAG_A32(IN, WHICH) FIELD_EX32(IN.flags2, TBFLAG_A32, WHICH) 3240 #define EX_TBFLAG_M32(IN, WHICH) FIELD_EX32(IN.flags2, TBFLAG_M32, WHICH) 3241 #define EX_TBFLAG_AM32(IN, WHICH) FIELD_EX32(IN.flags2, TBFLAG_AM32, WHICH) 3242 3243 /** 3244 * cpu_mmu_index: 3245 * @env: The cpu environment 3246 * @ifetch: True for code access, false for data access. 3247 * 3248 * Return the core mmu index for the current translation regime. 3249 * This function is used by generic TCG code paths. 3250 */ 3251 static inline int cpu_mmu_index(CPUARMState *env, bool ifetch) 3252 { 3253 return EX_TBFLAG_ANY(env->hflags, MMUIDX); 3254 } 3255 3256 /** 3257 * sve_vq 3258 * @env: the cpu context 3259 * 3260 * Return the VL cached within env->hflags, in units of quadwords. 3261 */ 3262 static inline int sve_vq(CPUARMState *env) 3263 { 3264 return EX_TBFLAG_A64(env->hflags, VL) + 1; 3265 } 3266 3267 /** 3268 * sme_vq 3269 * @env: the cpu context 3270 * 3271 * Return the SVL cached within env->hflags, in units of quadwords. 3272 */ 3273 static inline int sme_vq(CPUARMState *env) 3274 { 3275 return EX_TBFLAG_A64(env->hflags, SVL) + 1; 3276 } 3277 3278 static inline bool bswap_code(bool sctlr_b) 3279 { 3280 #ifdef CONFIG_USER_ONLY 3281 /* BE8 (SCTLR.B = 0, TARGET_BIG_ENDIAN = 1) is mixed endian. 3282 * The invalid combination SCTLR.B=1/CPSR.E=1/TARGET_BIG_ENDIAN=0 3283 * would also end up as a mixed-endian mode with BE code, LE data. 3284 */ 3285 return TARGET_BIG_ENDIAN ^ sctlr_b; 3286 #else 3287 /* All code access in ARM is little endian, and there are no loaders 3288 * doing swaps that need to be reversed 3289 */ 3290 return 0; 3291 #endif 3292 } 3293 3294 #ifdef CONFIG_USER_ONLY 3295 static inline bool arm_cpu_bswap_data(CPUARMState *env) 3296 { 3297 return TARGET_BIG_ENDIAN ^ arm_cpu_data_is_big_endian(env); 3298 } 3299 #endif 3300 3301 void cpu_get_tb_cpu_state(CPUARMState *env, vaddr *pc, 3302 uint64_t *cs_base, uint32_t *flags); 3303 3304 enum { 3305 QEMU_PSCI_CONDUIT_DISABLED = 0, 3306 QEMU_PSCI_CONDUIT_SMC = 1, 3307 QEMU_PSCI_CONDUIT_HVC = 2, 3308 }; 3309 3310 #ifndef CONFIG_USER_ONLY 3311 /* Return the address space index to use for a memory access */ 3312 static inline int arm_asidx_from_attrs(CPUState *cs, MemTxAttrs attrs) 3313 { 3314 return attrs.secure ? ARMASIdx_S : ARMASIdx_NS; 3315 } 3316 3317 /* Return the AddressSpace to use for a memory access 3318 * (which depends on whether the access is S or NS, and whether 3319 * the board gave us a separate AddressSpace for S accesses). 3320 */ 3321 static inline AddressSpace *arm_addressspace(CPUState *cs, MemTxAttrs attrs) 3322 { 3323 return cpu_get_address_space(cs, arm_asidx_from_attrs(cs, attrs)); 3324 } 3325 #endif 3326 3327 /** 3328 * arm_register_pre_el_change_hook: 3329 * Register a hook function which will be called immediately before this 3330 * CPU changes exception level or mode. The hook function will be 3331 * passed a pointer to the ARMCPU and the opaque data pointer passed 3332 * to this function when the hook was registered. 3333 * 3334 * Note that if a pre-change hook is called, any registered post-change hooks 3335 * are guaranteed to subsequently be called. 3336 */ 3337 void arm_register_pre_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, 3338 void *opaque); 3339 /** 3340 * arm_register_el_change_hook: 3341 * Register a hook function which will be called immediately after this 3342 * CPU changes exception level or mode. The hook function will be 3343 * passed a pointer to the ARMCPU and the opaque data pointer passed 3344 * to this function when the hook was registered. 3345 * 3346 * Note that any registered hooks registered here are guaranteed to be called 3347 * if pre-change hooks have been. 3348 */ 3349 void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, void 3350 *opaque); 3351 3352 /** 3353 * arm_rebuild_hflags: 3354 * Rebuild the cached TBFLAGS for arbitrary changed processor state. 3355 */ 3356 void arm_rebuild_hflags(CPUARMState *env); 3357 3358 /** 3359 * aa32_vfp_dreg: 3360 * Return a pointer to the Dn register within env in 32-bit mode. 3361 */ 3362 static inline uint64_t *aa32_vfp_dreg(CPUARMState *env, unsigned regno) 3363 { 3364 return &env->vfp.zregs[regno >> 1].d[regno & 1]; 3365 } 3366 3367 /** 3368 * aa32_vfp_qreg: 3369 * Return a pointer to the Qn register within env in 32-bit mode. 3370 */ 3371 static inline uint64_t *aa32_vfp_qreg(CPUARMState *env, unsigned regno) 3372 { 3373 return &env->vfp.zregs[regno].d[0]; 3374 } 3375 3376 /** 3377 * aa64_vfp_qreg: 3378 * Return a pointer to the Qn register within env in 64-bit mode. 3379 */ 3380 static inline uint64_t *aa64_vfp_qreg(CPUARMState *env, unsigned regno) 3381 { 3382 return &env->vfp.zregs[regno].d[0]; 3383 } 3384 3385 /* Shared between translate-sve.c and sve_helper.c. */ 3386 extern const uint64_t pred_esz_masks[5]; 3387 3388 /* 3389 * AArch64 usage of the PAGE_TARGET_* bits for linux-user. 3390 * Note that with the Linux kernel, PROT_MTE may not be cleared by mprotect 3391 * mprotect but PROT_BTI may be cleared. C.f. the kernel's VM_ARCH_CLEAR. 3392 */ 3393 #define PAGE_BTI PAGE_TARGET_1 3394 #define PAGE_MTE PAGE_TARGET_2 3395 #define PAGE_TARGET_STICKY PAGE_MTE 3396 3397 /* We associate one allocation tag per 16 bytes, the minimum. */ 3398 #define LOG2_TAG_GRANULE 4 3399 #define TAG_GRANULE (1 << LOG2_TAG_GRANULE) 3400 3401 #ifdef CONFIG_USER_ONLY 3402 #define TARGET_PAGE_DATA_SIZE (TARGET_PAGE_SIZE >> (LOG2_TAG_GRANULE + 1)) 3403 #endif 3404 3405 #ifdef TARGET_TAGGED_ADDRESSES 3406 /** 3407 * cpu_untagged_addr: 3408 * @cs: CPU context 3409 * @x: tagged address 3410 * 3411 * Remove any address tag from @x. This is explicitly related to the 3412 * linux syscall TIF_TAGGED_ADDR setting, not TBI in general. 3413 * 3414 * There should be a better place to put this, but we need this in 3415 * include/exec/cpu_ldst.h, and not some place linux-user specific. 3416 */ 3417 static inline target_ulong cpu_untagged_addr(CPUState *cs, target_ulong x) 3418 { 3419 ARMCPU *cpu = ARM_CPU(cs); 3420 if (cpu->env.tagged_addr_enable) { 3421 /* 3422 * TBI is enabled for userspace but not kernelspace addresses. 3423 * Only clear the tag if bit 55 is clear. 3424 */ 3425 x &= sextract64(x, 0, 56); 3426 } 3427 return x; 3428 } 3429 #endif 3430 3431 #endif 3432