1 /* 2 * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * * Neither the name of the Open Source and Linux Lab nor the 13 * names of its contributors may be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef XTENSA_CPU_H 29 #define XTENSA_CPU_H 30 31 #include "cpu-qom.h" 32 #include "qemu/cpu-float.h" 33 #include "exec/cpu-defs.h" 34 #include "hw/clock.h" 35 #include "xtensa-isa.h" 36 37 /* Xtensa processors have a weak memory model */ 38 #define TCG_GUEST_DEFAULT_MO (0) 39 40 enum { 41 /* Additional instructions */ 42 XTENSA_OPTION_CODE_DENSITY, 43 XTENSA_OPTION_LOOP, 44 XTENSA_OPTION_EXTENDED_L32R, 45 XTENSA_OPTION_16_BIT_IMUL, 46 XTENSA_OPTION_32_BIT_IMUL, 47 XTENSA_OPTION_32_BIT_IMUL_HIGH, 48 XTENSA_OPTION_32_BIT_IDIV, 49 XTENSA_OPTION_MAC16, 50 XTENSA_OPTION_MISC_OP_NSA, 51 XTENSA_OPTION_MISC_OP_MINMAX, 52 XTENSA_OPTION_MISC_OP_SEXT, 53 XTENSA_OPTION_MISC_OP_CLAMPS, 54 XTENSA_OPTION_COPROCESSOR, 55 XTENSA_OPTION_BOOLEAN, 56 XTENSA_OPTION_FP_COPROCESSOR, 57 XTENSA_OPTION_DFP_COPROCESSOR, 58 XTENSA_OPTION_DFPU_SINGLE_ONLY, 59 XTENSA_OPTION_MP_SYNCHRO, 60 XTENSA_OPTION_CONDITIONAL_STORE, 61 XTENSA_OPTION_ATOMCTL, 62 XTENSA_OPTION_DEPBITS, 63 64 /* Interrupts and exceptions */ 65 XTENSA_OPTION_EXCEPTION, 66 XTENSA_OPTION_RELOCATABLE_VECTOR, 67 XTENSA_OPTION_UNALIGNED_EXCEPTION, 68 XTENSA_OPTION_INTERRUPT, 69 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT, 70 XTENSA_OPTION_TIMER_INTERRUPT, 71 72 /* Local memory */ 73 XTENSA_OPTION_ICACHE, 74 XTENSA_OPTION_ICACHE_TEST, 75 XTENSA_OPTION_ICACHE_INDEX_LOCK, 76 XTENSA_OPTION_DCACHE, 77 XTENSA_OPTION_DCACHE_TEST, 78 XTENSA_OPTION_DCACHE_INDEX_LOCK, 79 XTENSA_OPTION_IRAM, 80 XTENSA_OPTION_IROM, 81 XTENSA_OPTION_DRAM, 82 XTENSA_OPTION_DROM, 83 XTENSA_OPTION_XLMI, 84 XTENSA_OPTION_HW_ALIGNMENT, 85 XTENSA_OPTION_MEMORY_ECC_PARITY, 86 87 /* Memory protection and translation */ 88 XTENSA_OPTION_REGION_PROTECTION, 89 XTENSA_OPTION_REGION_TRANSLATION, 90 XTENSA_OPTION_MPU, 91 XTENSA_OPTION_MMU, 92 XTENSA_OPTION_CACHEATTR, 93 94 /* Other */ 95 XTENSA_OPTION_WINDOWED_REGISTER, 96 XTENSA_OPTION_PROCESSOR_INTERFACE, 97 XTENSA_OPTION_MISC_SR, 98 XTENSA_OPTION_THREAD_POINTER, 99 XTENSA_OPTION_PROCESSOR_ID, 100 XTENSA_OPTION_DEBUG, 101 XTENSA_OPTION_TRACE_PORT, 102 XTENSA_OPTION_EXTERN_REGS, 103 }; 104 105 enum { 106 EXPSTATE = 230, 107 THREADPTR = 231, 108 FCR = 232, 109 FSR = 233, 110 }; 111 112 enum { 113 LBEG = 0, 114 LEND = 1, 115 LCOUNT = 2, 116 SAR = 3, 117 BR = 4, 118 LITBASE = 5, 119 SCOMPARE1 = 12, 120 ACCLO = 16, 121 ACCHI = 17, 122 MR = 32, 123 PREFCTL = 40, 124 WINDOW_BASE = 72, 125 WINDOW_START = 73, 126 PTEVADDR = 83, 127 MMID = 89, 128 RASID = 90, 129 MPUENB = 90, 130 ITLBCFG = 91, 131 DTLBCFG = 92, 132 MPUCFG = 92, 133 ERACCESS = 95, 134 IBREAKENABLE = 96, 135 MEMCTL = 97, 136 CACHEATTR = 98, 137 CACHEADRDIS = 98, 138 ATOMCTL = 99, 139 DDR = 104, 140 MEPC = 106, 141 MEPS = 107, 142 MESAVE = 108, 143 MESR = 109, 144 MECR = 110, 145 MEVADDR = 111, 146 IBREAKA = 128, 147 DBREAKA = 144, 148 DBREAKC = 160, 149 CONFIGID0 = 176, 150 EPC1 = 177, 151 DEPC = 192, 152 EPS2 = 194, 153 CONFIGID1 = 208, 154 EXCSAVE1 = 209, 155 CPENABLE = 224, 156 INTSET = 226, 157 INTCLEAR = 227, 158 INTENABLE = 228, 159 PS = 230, 160 VECBASE = 231, 161 EXCCAUSE = 232, 162 DEBUGCAUSE = 233, 163 CCOUNT = 234, 164 PRID = 235, 165 ICOUNT = 236, 166 ICOUNTLEVEL = 237, 167 EXCVADDR = 238, 168 CCOMPARE = 240, 169 MISC = 244, 170 }; 171 172 #define PS_INTLEVEL 0xf 173 #define PS_INTLEVEL_SHIFT 0 174 175 #define PS_EXCM 0x10 176 #define PS_UM 0x20 177 178 #define PS_RING 0xc0 179 #define PS_RING_SHIFT 6 180 181 #define PS_OWB 0xf00 182 #define PS_OWB_SHIFT 8 183 #define PS_OWB_LEN 4 184 185 #define PS_CALLINC 0x30000 186 #define PS_CALLINC_SHIFT 16 187 #define PS_CALLINC_LEN 2 188 189 #define PS_WOE 0x40000 190 191 #define DEBUGCAUSE_IC 0x1 192 #define DEBUGCAUSE_IB 0x2 193 #define DEBUGCAUSE_DB 0x4 194 #define DEBUGCAUSE_BI 0x8 195 #define DEBUGCAUSE_BN 0x10 196 #define DEBUGCAUSE_DI 0x20 197 #define DEBUGCAUSE_DBNUM 0xf00 198 #define DEBUGCAUSE_DBNUM_SHIFT 8 199 200 #define DBREAKC_SB 0x80000000 201 #define DBREAKC_LB 0x40000000 202 #define DBREAKC_SB_LB (DBREAKC_SB | DBREAKC_LB) 203 #define DBREAKC_MASK 0x3f 204 205 #define MEMCTL_INIT 0x00800000 206 #define MEMCTL_IUSEWAYS_SHIFT 18 207 #define MEMCTL_IUSEWAYS_LEN 5 208 #define MEMCTL_IUSEWAYS_MASK 0x007c0000 209 #define MEMCTL_DALLOCWAYS_SHIFT 13 210 #define MEMCTL_DALLOCWAYS_LEN 5 211 #define MEMCTL_DALLOCWAYS_MASK 0x0003e000 212 #define MEMCTL_DUSEWAYS_SHIFT 8 213 #define MEMCTL_DUSEWAYS_LEN 5 214 #define MEMCTL_DUSEWAYS_MASK 0x00001f00 215 #define MEMCTL_ISNP 0x4 216 #define MEMCTL_DSNP 0x2 217 #define MEMCTL_IL0EN 0x1 218 219 #define MAX_INSN_LENGTH 64 220 #define MAX_INSNBUF_LENGTH \ 221 ((MAX_INSN_LENGTH + sizeof(xtensa_insnbuf_word) - 1) / \ 222 sizeof(xtensa_insnbuf_word)) 223 #define MAX_INSN_SLOTS 32 224 #define MAX_OPCODE_ARGS 16 225 #define MAX_NAREG 64 226 #define MAX_NINTERRUPT 32 227 #define MAX_NLEVEL 6 228 #define MAX_NNMI 1 229 #define MAX_NCCOMPARE 3 230 #define MAX_TLB_WAY_SIZE 8 231 #define MAX_NDBREAK 2 232 #define MAX_NMEMORY 4 233 #define MAX_MPU_FOREGROUND_SEGMENTS 32 234 235 #define REGION_PAGE_MASK 0xe0000000 236 237 #define PAGE_CACHE_MASK 0x700 238 #define PAGE_CACHE_SHIFT 8 239 #define PAGE_CACHE_INVALID 0x000 240 #define PAGE_CACHE_BYPASS 0x100 241 #define PAGE_CACHE_WT 0x200 242 #define PAGE_CACHE_WB 0x400 243 #define PAGE_CACHE_ISOLATE 0x600 244 245 enum { 246 /* Static vectors */ 247 EXC_RESET0, 248 EXC_RESET1, 249 EXC_MEMORY_ERROR, 250 251 /* Dynamic vectors */ 252 EXC_WINDOW_OVERFLOW4, 253 EXC_WINDOW_UNDERFLOW4, 254 EXC_WINDOW_OVERFLOW8, 255 EXC_WINDOW_UNDERFLOW8, 256 EXC_WINDOW_OVERFLOW12, 257 EXC_WINDOW_UNDERFLOW12, 258 EXC_IRQ, 259 EXC_KERNEL, 260 EXC_USER, 261 EXC_DOUBLE, 262 EXC_DEBUG, 263 EXC_MAX 264 }; 265 266 enum { 267 ILLEGAL_INSTRUCTION_CAUSE = 0, 268 SYSCALL_CAUSE, 269 INSTRUCTION_FETCH_ERROR_CAUSE, 270 LOAD_STORE_ERROR_CAUSE, 271 LEVEL1_INTERRUPT_CAUSE, 272 ALLOCA_CAUSE, 273 INTEGER_DIVIDE_BY_ZERO_CAUSE, 274 PC_VALUE_ERROR_CAUSE, 275 PRIVILEGED_CAUSE, 276 LOAD_STORE_ALIGNMENT_CAUSE, 277 EXTERNAL_REG_PRIVILEGE_CAUSE, 278 EXCLUSIVE_ERROR_CAUSE, 279 INSTR_PIF_DATA_ERROR_CAUSE, 280 LOAD_STORE_PIF_DATA_ERROR_CAUSE, 281 INSTR_PIF_ADDR_ERROR_CAUSE, 282 LOAD_STORE_PIF_ADDR_ERROR_CAUSE, 283 INST_TLB_MISS_CAUSE, 284 INST_TLB_MULTI_HIT_CAUSE, 285 INST_FETCH_PRIVILEGE_CAUSE, 286 INST_FETCH_PROHIBITED_CAUSE = 20, 287 LOAD_STORE_TLB_MISS_CAUSE = 24, 288 LOAD_STORE_TLB_MULTI_HIT_CAUSE, 289 LOAD_STORE_PRIVILEGE_CAUSE, 290 LOAD_PROHIBITED_CAUSE = 28, 291 STORE_PROHIBITED_CAUSE, 292 293 COPROCESSOR0_DISABLED = 32, 294 }; 295 296 typedef enum { 297 INTTYPE_LEVEL, 298 INTTYPE_EDGE, 299 INTTYPE_NMI, 300 INTTYPE_SOFTWARE, 301 INTTYPE_TIMER, 302 INTTYPE_DEBUG, 303 INTTYPE_WRITE_ERR, 304 INTTYPE_PROFILING, 305 INTTYPE_IDMA_DONE, 306 INTTYPE_IDMA_ERR, 307 INTTYPE_GS_ERR, 308 INTTYPE_MAX 309 } interrupt_type; 310 311 typedef struct CPUArchState CPUXtensaState; 312 313 typedef struct xtensa_tlb_entry { 314 uint32_t vaddr; 315 uint32_t paddr; 316 uint8_t asid; 317 uint8_t attr; 318 bool variable; 319 } xtensa_tlb_entry; 320 321 typedef struct xtensa_tlb { 322 unsigned nways; 323 const unsigned way_size[10]; 324 bool varway56; 325 unsigned nrefillentries; 326 } xtensa_tlb; 327 328 typedef struct xtensa_mpu_entry { 329 uint32_t vaddr; 330 uint32_t attr; 331 } xtensa_mpu_entry; 332 333 typedef struct XtensaGdbReg { 334 int targno; 335 unsigned flags; 336 int type; 337 int group; 338 unsigned size; 339 } XtensaGdbReg; 340 341 typedef struct XtensaGdbRegmap { 342 int num_regs; 343 int num_core_regs; 344 /* PC + a + ar + sr + ur */ 345 XtensaGdbReg reg[1 + 16 + 64 + 256 + 256]; 346 } XtensaGdbRegmap; 347 348 typedef struct XtensaCcompareTimer { 349 CPUXtensaState *env; 350 QEMUTimer *timer; 351 } XtensaCcompareTimer; 352 353 typedef struct XtensaMemory { 354 unsigned num; 355 struct XtensaMemoryRegion { 356 uint32_t addr; 357 uint32_t size; 358 } location[MAX_NMEMORY]; 359 } XtensaMemory; 360 361 typedef struct opcode_arg { 362 uint32_t imm; 363 uint32_t raw_imm; 364 void *in; 365 void *out; 366 uint32_t num_bits; 367 } OpcodeArg; 368 369 typedef struct DisasContext DisasContext; 370 typedef void (*XtensaOpcodeOp)(DisasContext *dc, const OpcodeArg arg[], 371 const uint32_t par[]); 372 typedef uint32_t (*XtensaOpcodeUintTest)(DisasContext *dc, 373 const OpcodeArg arg[], 374 const uint32_t par[]); 375 376 enum { 377 XTENSA_OP_ILL = 0x1, 378 XTENSA_OP_PRIVILEGED = 0x2, 379 XTENSA_OP_SYSCALL = 0x4, 380 XTENSA_OP_DEBUG_BREAK = 0x8, 381 382 XTENSA_OP_OVERFLOW = 0x10, 383 XTENSA_OP_UNDERFLOW = 0x20, 384 XTENSA_OP_ALLOCA = 0x40, 385 XTENSA_OP_COPROCESSOR = 0x80, 386 387 XTENSA_OP_DIVIDE_BY_ZERO = 0x100, 388 389 /* Postprocessing flags */ 390 XTENSA_OP_CHECK_INTERRUPTS = 0x200, 391 XTENSA_OP_EXIT_TB_M1 = 0x400, 392 XTENSA_OP_EXIT_TB_0 = 0x800, 393 XTENSA_OP_SYNC_REGISTER_WINDOW = 0x1000, 394 395 XTENSA_OP_POSTPROCESS = 396 XTENSA_OP_CHECK_INTERRUPTS | 397 XTENSA_OP_EXIT_TB_M1 | 398 XTENSA_OP_EXIT_TB_0 | 399 XTENSA_OP_SYNC_REGISTER_WINDOW, 400 401 XTENSA_OP_NAME_ARRAY = 0x8000, 402 403 XTENSA_OP_CONTROL_FLOW = 0x10000, 404 XTENSA_OP_STORE = 0x20000, 405 XTENSA_OP_LOAD = 0x40000, 406 XTENSA_OP_LOAD_STORE = 407 XTENSA_OP_LOAD | XTENSA_OP_STORE, 408 }; 409 410 typedef struct XtensaOpcodeOps { 411 const void *name; 412 XtensaOpcodeOp translate; 413 XtensaOpcodeUintTest test_exceptions; 414 XtensaOpcodeUintTest test_overflow; 415 const uint32_t *par; 416 uint32_t op_flags; 417 uint32_t coprocessor; 418 } XtensaOpcodeOps; 419 420 typedef struct XtensaOpcodeTranslators { 421 unsigned num_opcodes; 422 const XtensaOpcodeOps *opcode; 423 } XtensaOpcodeTranslators; 424 425 extern const XtensaOpcodeTranslators xtensa_core_opcodes; 426 extern const XtensaOpcodeTranslators xtensa_fpu2000_opcodes; 427 extern const XtensaOpcodeTranslators xtensa_fpu_opcodes; 428 429 struct XtensaConfig { 430 const char *name; 431 uint64_t options; 432 XtensaGdbRegmap gdb_regmap; 433 unsigned nareg; 434 int excm_level; 435 int ndepc; 436 unsigned inst_fetch_width; 437 unsigned max_insn_size; 438 uint32_t vecbase; 439 uint32_t exception_vector[EXC_MAX]; 440 unsigned ninterrupt; 441 unsigned nlevel; 442 unsigned nmi_level; 443 uint32_t interrupt_vector[MAX_NLEVEL + MAX_NNMI + 1]; 444 uint32_t level_mask[MAX_NLEVEL + MAX_NNMI + 1]; 445 uint32_t inttype_mask[INTTYPE_MAX]; 446 struct { 447 uint32_t level; 448 interrupt_type inttype; 449 } interrupt[MAX_NINTERRUPT]; 450 unsigned nccompare; 451 uint32_t timerint[MAX_NCCOMPARE]; 452 unsigned nextint; 453 unsigned extint[MAX_NINTERRUPT]; 454 455 unsigned debug_level; 456 unsigned nibreak; 457 unsigned ndbreak; 458 459 unsigned icache_ways; 460 unsigned dcache_ways; 461 unsigned dcache_line_bytes; 462 uint32_t memctl_mask; 463 464 XtensaMemory instrom; 465 XtensaMemory instram; 466 XtensaMemory datarom; 467 XtensaMemory dataram; 468 XtensaMemory sysrom; 469 XtensaMemory sysram; 470 471 unsigned hw_version; 472 uint32_t configid[2]; 473 474 void *isa_internal; 475 xtensa_isa isa; 476 XtensaOpcodeOps **opcode_ops; 477 const XtensaOpcodeTranslators **opcode_translators; 478 xtensa_regfile a_regfile; 479 void ***regfile; 480 481 uint32_t clock_freq_khz; 482 483 xtensa_tlb itlb; 484 xtensa_tlb dtlb; 485 486 uint32_t mpu_align; 487 unsigned n_mpu_fg_segments; 488 unsigned n_mpu_bg_segments; 489 const xtensa_mpu_entry *mpu_bg; 490 491 bool use_first_nan; 492 }; 493 494 typedef struct XtensaConfigList { 495 const XtensaConfig *config; 496 struct XtensaConfigList *next; 497 } XtensaConfigList; 498 499 #if HOST_BIG_ENDIAN 500 enum { 501 FP_F32_HIGH, 502 FP_F32_LOW, 503 }; 504 #else 505 enum { 506 FP_F32_LOW, 507 FP_F32_HIGH, 508 }; 509 #endif 510 511 struct CPUArchState { 512 const XtensaConfig *config; 513 uint32_t regs[16]; 514 uint32_t pc; 515 uint32_t sregs[256]; 516 uint32_t uregs[256]; 517 uint32_t phys_regs[MAX_NAREG]; 518 union { 519 float32 f32[2]; 520 float64 f64; 521 } fregs[16]; 522 float_status fp_status; 523 uint32_t windowbase_next; 524 uint32_t exclusive_addr; 525 uint32_t exclusive_val; 526 527 #ifndef CONFIG_USER_ONLY 528 xtensa_tlb_entry itlb[7][MAX_TLB_WAY_SIZE]; 529 xtensa_tlb_entry dtlb[10][MAX_TLB_WAY_SIZE]; 530 xtensa_mpu_entry mpu_fg[MAX_MPU_FOREGROUND_SEGMENTS]; 531 unsigned autorefill_idx; 532 bool runstall; 533 AddressSpace *address_space_er; 534 MemoryRegion *system_er; 535 int pending_irq_level; /* level of last raised IRQ */ 536 qemu_irq *irq_inputs; 537 qemu_irq ext_irq_inputs[MAX_NINTERRUPT]; 538 qemu_irq runstall_irq; 539 XtensaCcompareTimer ccompare[MAX_NCCOMPARE]; 540 uint64_t time_base; 541 uint64_t ccount_time; 542 uint32_t ccount_base; 543 #endif 544 545 int yield_needed; 546 unsigned static_vectors; 547 548 /* Watchpoints for DBREAK registers */ 549 struct CPUWatchpoint *cpu_watchpoint[MAX_NDBREAK]; 550 }; 551 552 /** 553 * XtensaCPU: 554 * @env: #CPUXtensaState 555 * 556 * An Xtensa CPU. 557 */ 558 struct ArchCPU { 559 /*< private >*/ 560 CPUState parent_obj; 561 /*< public >*/ 562 563 Clock *clock; 564 CPUNegativeOffsetState neg; 565 CPUXtensaState env; 566 }; 567 568 569 #ifndef CONFIG_USER_ONLY 570 bool xtensa_cpu_tlb_fill(CPUState *cs, vaddr address, int size, 571 MMUAccessType access_type, int mmu_idx, 572 bool probe, uintptr_t retaddr); 573 void xtensa_cpu_do_interrupt(CPUState *cpu); 574 bool xtensa_cpu_exec_interrupt(CPUState *cpu, int interrupt_request); 575 void xtensa_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, vaddr addr, 576 unsigned size, MMUAccessType access_type, 577 int mmu_idx, MemTxAttrs attrs, 578 MemTxResult response, uintptr_t retaddr); 579 hwaddr xtensa_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); 580 #endif 581 void xtensa_cpu_dump_state(CPUState *cpu, FILE *f, int flags); 582 void xtensa_count_regs(const XtensaConfig *config, 583 unsigned *n_regs, unsigned *n_core_regs); 584 int xtensa_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); 585 int xtensa_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); 586 G_NORETURN void xtensa_cpu_do_unaligned_access(CPUState *cpu, vaddr addr, 587 MMUAccessType access_type, int mmu_idx, 588 uintptr_t retaddr); 589 590 #define cpu_list xtensa_cpu_list 591 592 #define XTENSA_CPU_TYPE_SUFFIX "-" TYPE_XTENSA_CPU 593 #define XTENSA_CPU_TYPE_NAME(model) model XTENSA_CPU_TYPE_SUFFIX 594 #define CPU_RESOLVING_TYPE TYPE_XTENSA_CPU 595 596 #if TARGET_BIG_ENDIAN 597 #define XTENSA_DEFAULT_CPU_MODEL "fsf" 598 #define XTENSA_DEFAULT_CPU_NOMMU_MODEL "fsf" 599 #else 600 #define XTENSA_DEFAULT_CPU_MODEL "dc232b" 601 #define XTENSA_DEFAULT_CPU_NOMMU_MODEL "de212" 602 #endif 603 #define XTENSA_DEFAULT_CPU_TYPE \ 604 XTENSA_CPU_TYPE_NAME(XTENSA_DEFAULT_CPU_MODEL) 605 #define XTENSA_DEFAULT_CPU_NOMMU_TYPE \ 606 XTENSA_CPU_TYPE_NAME(XTENSA_DEFAULT_CPU_NOMMU_MODEL) 607 608 void xtensa_collect_sr_names(const XtensaConfig *config); 609 void xtensa_translate_init(void); 610 void **xtensa_get_regfile_by_name(const char *name, int entries, int bits); 611 void xtensa_breakpoint_handler(CPUState *cs); 612 void xtensa_register_core(XtensaConfigList *node); 613 void xtensa_sim_open_console(Chardev *chr); 614 void check_interrupts(CPUXtensaState *s); 615 void xtensa_irq_init(CPUXtensaState *env); 616 qemu_irq *xtensa_get_extints(CPUXtensaState *env); 617 qemu_irq xtensa_get_runstall(CPUXtensaState *env); 618 void xtensa_cpu_list(void); 619 void xtensa_sync_window_from_phys(CPUXtensaState *env); 620 void xtensa_sync_phys_from_window(CPUXtensaState *env); 621 void xtensa_rotate_window(CPUXtensaState *env, uint32_t delta); 622 void xtensa_restore_owb(CPUXtensaState *env); 623 void debug_exception_env(CPUXtensaState *new_env, uint32_t cause); 624 625 static inline void xtensa_select_static_vectors(CPUXtensaState *env, 626 unsigned n) 627 { 628 assert(n < 2); 629 env->static_vectors = n; 630 } 631 void xtensa_runstall(CPUXtensaState *env, bool runstall); 632 633 #define XTENSA_OPTION_BIT(opt) (((uint64_t)1) << (opt)) 634 #define XTENSA_OPTION_ALL (~(uint64_t)0) 635 636 static inline bool xtensa_option_bits_enabled(const XtensaConfig *config, 637 uint64_t opt) 638 { 639 return (config->options & opt) != 0; 640 } 641 642 static inline bool xtensa_option_enabled(const XtensaConfig *config, int opt) 643 { 644 return xtensa_option_bits_enabled(config, XTENSA_OPTION_BIT(opt)); 645 } 646 647 static inline int xtensa_get_cintlevel(const CPUXtensaState *env) 648 { 649 int level = (env->sregs[PS] & PS_INTLEVEL) >> PS_INTLEVEL_SHIFT; 650 if ((env->sregs[PS] & PS_EXCM) && env->config->excm_level > level) { 651 level = env->config->excm_level; 652 } 653 return level; 654 } 655 656 static inline int xtensa_get_ring(const CPUXtensaState *env) 657 { 658 if (xtensa_option_bits_enabled(env->config, 659 XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) | 660 XTENSA_OPTION_BIT(XTENSA_OPTION_MPU))) { 661 return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT; 662 } else { 663 return 0; 664 } 665 } 666 667 static inline int xtensa_get_cring(const CPUXtensaState *env) 668 { 669 if (xtensa_option_bits_enabled(env->config, 670 XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) | 671 XTENSA_OPTION_BIT(XTENSA_OPTION_MPU)) && 672 (env->sregs[PS] & PS_EXCM) == 0) { 673 return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT; 674 } else { 675 return 0; 676 } 677 } 678 679 #ifndef CONFIG_USER_ONLY 680 int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb, 681 uint32_t vaddr, int is_write, int mmu_idx, 682 uint32_t *paddr, uint32_t *page_size, unsigned *access); 683 void reset_mmu(CPUXtensaState *env); 684 void dump_mmu(CPUXtensaState *env); 685 686 static inline MemoryRegion *xtensa_get_er_region(CPUXtensaState *env) 687 { 688 return env->system_er; 689 } 690 #else 691 void xtensa_set_abi_call0(void); 692 bool xtensa_abi_call0(void); 693 #endif 694 695 static inline uint32_t xtensa_replicate_windowstart(CPUXtensaState *env) 696 { 697 return env->sregs[WINDOW_START] | 698 (env->sregs[WINDOW_START] << env->config->nareg / 4); 699 } 700 701 /* MMU modes definitions */ 702 #define MMU_USER_IDX 3 703 704 static inline int cpu_mmu_index(CPUXtensaState *env, bool ifetch) 705 { 706 return xtensa_get_cring(env); 707 } 708 709 #define XTENSA_TBFLAG_RING_MASK 0x3 710 #define XTENSA_TBFLAG_EXCM 0x4 711 #define XTENSA_TBFLAG_LITBASE 0x8 712 #define XTENSA_TBFLAG_DEBUG 0x10 713 #define XTENSA_TBFLAG_ICOUNT 0x20 714 #define XTENSA_TBFLAG_CPENABLE_MASK 0x3fc0 715 #define XTENSA_TBFLAG_CPENABLE_SHIFT 6 716 #define XTENSA_TBFLAG_WINDOW_MASK 0x18000 717 #define XTENSA_TBFLAG_WINDOW_SHIFT 15 718 #define XTENSA_TBFLAG_YIELD 0x20000 719 #define XTENSA_TBFLAG_CWOE 0x40000 720 #define XTENSA_TBFLAG_CALLINC_MASK 0x180000 721 #define XTENSA_TBFLAG_CALLINC_SHIFT 19 722 723 #define XTENSA_CSBASE_LEND_MASK 0x0000ffff 724 #define XTENSA_CSBASE_LEND_SHIFT 0 725 #define XTENSA_CSBASE_LBEG_OFF_MASK 0x00ff0000 726 #define XTENSA_CSBASE_LBEG_OFF_SHIFT 16 727 728 #include "exec/cpu-all.h" 729 730 static inline void cpu_get_tb_cpu_state(CPUXtensaState *env, target_ulong *pc, 731 target_ulong *cs_base, uint32_t *flags) 732 { 733 *pc = env->pc; 734 *cs_base = 0; 735 *flags = 0; 736 *flags |= xtensa_get_ring(env); 737 if (env->sregs[PS] & PS_EXCM) { 738 *flags |= XTENSA_TBFLAG_EXCM; 739 } else if (xtensa_option_enabled(env->config, XTENSA_OPTION_LOOP)) { 740 target_ulong lend_dist = 741 env->sregs[LEND] - (env->pc & -(1u << TARGET_PAGE_BITS)); 742 743 /* 744 * 0 in the csbase_lend field means that there may not be a loopback 745 * for any instruction that starts inside this page. Any other value 746 * means that an instruction that ends at this offset from the page 747 * start may loop back and will need loopback code to be generated. 748 * 749 * lend_dist is 0 when LEND points to the start of the page, but 750 * no instruction that starts inside this page may end at offset 0, 751 * so it's still correct. 752 * 753 * When an instruction ends at a page boundary it may only start in 754 * the previous page. lend_dist will be encoded as TARGET_PAGE_SIZE 755 * for the TB that contains this instruction. 756 */ 757 if (lend_dist < (1u << TARGET_PAGE_BITS) + env->config->max_insn_size) { 758 target_ulong lbeg_off = env->sregs[LEND] - env->sregs[LBEG]; 759 760 *cs_base = lend_dist; 761 if (lbeg_off < 256) { 762 *cs_base |= lbeg_off << XTENSA_CSBASE_LBEG_OFF_SHIFT; 763 } 764 } 765 } 766 if (xtensa_option_enabled(env->config, XTENSA_OPTION_EXTENDED_L32R) && 767 (env->sregs[LITBASE] & 1)) { 768 *flags |= XTENSA_TBFLAG_LITBASE; 769 } 770 if (xtensa_option_enabled(env->config, XTENSA_OPTION_DEBUG)) { 771 if (xtensa_get_cintlevel(env) < env->config->debug_level) { 772 *flags |= XTENSA_TBFLAG_DEBUG; 773 } 774 if (xtensa_get_cintlevel(env) < env->sregs[ICOUNTLEVEL]) { 775 *flags |= XTENSA_TBFLAG_ICOUNT; 776 } 777 } 778 if (xtensa_option_enabled(env->config, XTENSA_OPTION_COPROCESSOR)) { 779 *flags |= env->sregs[CPENABLE] << XTENSA_TBFLAG_CPENABLE_SHIFT; 780 } 781 if (xtensa_option_enabled(env->config, XTENSA_OPTION_WINDOWED_REGISTER) && 782 (env->sregs[PS] & (PS_WOE | PS_EXCM)) == PS_WOE) { 783 uint32_t windowstart = xtensa_replicate_windowstart(env) >> 784 (env->sregs[WINDOW_BASE] + 1); 785 uint32_t w = ctz32(windowstart | 0x8); 786 787 *flags |= (w << XTENSA_TBFLAG_WINDOW_SHIFT) | XTENSA_TBFLAG_CWOE; 788 *flags |= extract32(env->sregs[PS], PS_CALLINC_SHIFT, 789 PS_CALLINC_LEN) << XTENSA_TBFLAG_CALLINC_SHIFT; 790 } else { 791 *flags |= 3 << XTENSA_TBFLAG_WINDOW_SHIFT; 792 } 793 if (env->yield_needed) { 794 *flags |= XTENSA_TBFLAG_YIELD; 795 } 796 } 797 798 XtensaCPU *xtensa_cpu_create_with_clock(const char *cpu_type, 799 Clock *cpu_refclk); 800 801 #endif 802