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