linux-user, scripts: add a script to update syscall.tbl
[qemu.git] / target / xtensa / cpu.h
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_MP_SYNCHRO,
56 XTENSA_OPTION_CONDITIONAL_STORE,
57 XTENSA_OPTION_ATOMCTL,
58 XTENSA_OPTION_DEPBITS,
59
60 /* Interrupts and exceptions */
61 XTENSA_OPTION_EXCEPTION,
62 XTENSA_OPTION_RELOCATABLE_VECTOR,
63 XTENSA_OPTION_UNALIGNED_EXCEPTION,
64 XTENSA_OPTION_INTERRUPT,
65 XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT,
66 XTENSA_OPTION_TIMER_INTERRUPT,
67
68 /* Local memory */
69 XTENSA_OPTION_ICACHE,
70 XTENSA_OPTION_ICACHE_TEST,
71 XTENSA_OPTION_ICACHE_INDEX_LOCK,
72 XTENSA_OPTION_DCACHE,
73 XTENSA_OPTION_DCACHE_TEST,
74 XTENSA_OPTION_DCACHE_INDEX_LOCK,
75 XTENSA_OPTION_IRAM,
76 XTENSA_OPTION_IROM,
77 XTENSA_OPTION_DRAM,
78 XTENSA_OPTION_DROM,
79 XTENSA_OPTION_XLMI,
80 XTENSA_OPTION_HW_ALIGNMENT,
81 XTENSA_OPTION_MEMORY_ECC_PARITY,
82
83 /* Memory protection and translation */
84 XTENSA_OPTION_REGION_PROTECTION,
85 XTENSA_OPTION_REGION_TRANSLATION,
86 XTENSA_OPTION_MPU,
87 XTENSA_OPTION_MMU,
88 XTENSA_OPTION_CACHEATTR,
89
90 /* Other */
91 XTENSA_OPTION_WINDOWED_REGISTER,
92 XTENSA_OPTION_PROCESSOR_INTERFACE,
93 XTENSA_OPTION_MISC_SR,
94 XTENSA_OPTION_THREAD_POINTER,
95 XTENSA_OPTION_PROCESSOR_ID,
96 XTENSA_OPTION_DEBUG,
97 XTENSA_OPTION_TRACE_PORT,
98 XTENSA_OPTION_EXTERN_REGS,
99 };
100
101 enum {
102 EXPSTATE = 230,
103 THREADPTR = 231,
104 FCR = 232,
105 FSR = 233,
106 };
107
108 enum {
109 LBEG = 0,
110 LEND = 1,
111 LCOUNT = 2,
112 SAR = 3,
113 BR = 4,
114 LITBASE = 5,
115 SCOMPARE1 = 12,
116 ACCLO = 16,
117 ACCHI = 17,
118 MR = 32,
119 PREFCTL = 40,
120 WINDOW_BASE = 72,
121 WINDOW_START = 73,
122 PTEVADDR = 83,
123 MMID = 89,
124 RASID = 90,
125 MPUENB = 90,
126 ITLBCFG = 91,
127 DTLBCFG = 92,
128 MPUCFG = 92,
129 ERACCESS = 95,
130 IBREAKENABLE = 96,
131 MEMCTL = 97,
132 CACHEATTR = 98,
133 CACHEADRDIS = 98,
134 ATOMCTL = 99,
135 DDR = 104,
136 MEPC = 106,
137 MEPS = 107,
138 MESAVE = 108,
139 MESR = 109,
140 MECR = 110,
141 MEVADDR = 111,
142 IBREAKA = 128,
143 DBREAKA = 144,
144 DBREAKC = 160,
145 CONFIGID0 = 176,
146 EPC1 = 177,
147 DEPC = 192,
148 EPS2 = 194,
149 CONFIGID1 = 208,
150 EXCSAVE1 = 209,
151 CPENABLE = 224,
152 INTSET = 226,
153 INTCLEAR = 227,
154 INTENABLE = 228,
155 PS = 230,
156 VECBASE = 231,
157 EXCCAUSE = 232,
158 DEBUGCAUSE = 233,
159 CCOUNT = 234,
160 PRID = 235,
161 ICOUNT = 236,
162 ICOUNTLEVEL = 237,
163 EXCVADDR = 238,
164 CCOMPARE = 240,
165 MISC = 244,
166 };
167
168 #define PS_INTLEVEL 0xf
169 #define PS_INTLEVEL_SHIFT 0
170
171 #define PS_EXCM 0x10
172 #define PS_UM 0x20
173
174 #define PS_RING 0xc0
175 #define PS_RING_SHIFT 6
176
177 #define PS_OWB 0xf00
178 #define PS_OWB_SHIFT 8
179 #define PS_OWB_LEN 4
180
181 #define PS_CALLINC 0x30000
182 #define PS_CALLINC_SHIFT 16
183 #define PS_CALLINC_LEN 2
184
185 #define PS_WOE 0x40000
186
187 #define DEBUGCAUSE_IC 0x1
188 #define DEBUGCAUSE_IB 0x2
189 #define DEBUGCAUSE_DB 0x4
190 #define DEBUGCAUSE_BI 0x8
191 #define DEBUGCAUSE_BN 0x10
192 #define DEBUGCAUSE_DI 0x20
193 #define DEBUGCAUSE_DBNUM 0xf00
194 #define DEBUGCAUSE_DBNUM_SHIFT 8
195
196 #define DBREAKC_SB 0x80000000
197 #define DBREAKC_LB 0x40000000
198 #define DBREAKC_SB_LB (DBREAKC_SB | DBREAKC_LB)
199 #define DBREAKC_MASK 0x3f
200
201 #define MEMCTL_INIT 0x00800000
202 #define MEMCTL_IUSEWAYS_SHIFT 18
203 #define MEMCTL_IUSEWAYS_LEN 5
204 #define MEMCTL_IUSEWAYS_MASK 0x007c0000
205 #define MEMCTL_DALLOCWAYS_SHIFT 13
206 #define MEMCTL_DALLOCWAYS_LEN 5
207 #define MEMCTL_DALLOCWAYS_MASK 0x0003e000
208 #define MEMCTL_DUSEWAYS_SHIFT 8
209 #define MEMCTL_DUSEWAYS_LEN 5
210 #define MEMCTL_DUSEWAYS_MASK 0x00001f00
211 #define MEMCTL_ISNP 0x4
212 #define MEMCTL_DSNP 0x2
213 #define MEMCTL_IL0EN 0x1
214
215 #define MAX_INSN_LENGTH 64
216 #define MAX_INSN_SLOTS 32
217 #define MAX_OPCODE_ARGS 16
218 #define MAX_NAREG 64
219 #define MAX_NINTERRUPT 32
220 #define MAX_NLEVEL 6
221 #define MAX_NNMI 1
222 #define MAX_NCCOMPARE 3
223 #define MAX_TLB_WAY_SIZE 8
224 #define MAX_NDBREAK 2
225 #define MAX_NMEMORY 4
226 #define MAX_MPU_FOREGROUND_SEGMENTS 32
227
228 #define REGION_PAGE_MASK 0xe0000000
229
230 #define PAGE_CACHE_MASK 0x700
231 #define PAGE_CACHE_SHIFT 8
232 #define PAGE_CACHE_INVALID 0x000
233 #define PAGE_CACHE_BYPASS 0x100
234 #define PAGE_CACHE_WT 0x200
235 #define PAGE_CACHE_WB 0x400
236 #define PAGE_CACHE_ISOLATE 0x600
237
238 enum {
239 /* Static vectors */
240 EXC_RESET0,
241 EXC_RESET1,
242 EXC_MEMORY_ERROR,
243
244 /* Dynamic vectors */
245 EXC_WINDOW_OVERFLOW4,
246 EXC_WINDOW_UNDERFLOW4,
247 EXC_WINDOW_OVERFLOW8,
248 EXC_WINDOW_UNDERFLOW8,
249 EXC_WINDOW_OVERFLOW12,
250 EXC_WINDOW_UNDERFLOW12,
251 EXC_IRQ,
252 EXC_KERNEL,
253 EXC_USER,
254 EXC_DOUBLE,
255 EXC_DEBUG,
256 EXC_MAX
257 };
258
259 enum {
260 ILLEGAL_INSTRUCTION_CAUSE = 0,
261 SYSCALL_CAUSE,
262 INSTRUCTION_FETCH_ERROR_CAUSE,
263 LOAD_STORE_ERROR_CAUSE,
264 LEVEL1_INTERRUPT_CAUSE,
265 ALLOCA_CAUSE,
266 INTEGER_DIVIDE_BY_ZERO_CAUSE,
267 PC_VALUE_ERROR_CAUSE,
268 PRIVILEGED_CAUSE,
269 LOAD_STORE_ALIGNMENT_CAUSE,
270 EXTERNAL_REG_PRIVILEGE_CAUSE,
271 EXCLUSIVE_ERROR_CAUSE,
272 INSTR_PIF_DATA_ERROR_CAUSE,
273 LOAD_STORE_PIF_DATA_ERROR_CAUSE,
274 INSTR_PIF_ADDR_ERROR_CAUSE,
275 LOAD_STORE_PIF_ADDR_ERROR_CAUSE,
276 INST_TLB_MISS_CAUSE,
277 INST_TLB_MULTI_HIT_CAUSE,
278 INST_FETCH_PRIVILEGE_CAUSE,
279 INST_FETCH_PROHIBITED_CAUSE = 20,
280 LOAD_STORE_TLB_MISS_CAUSE = 24,
281 LOAD_STORE_TLB_MULTI_HIT_CAUSE,
282 LOAD_STORE_PRIVILEGE_CAUSE,
283 LOAD_PROHIBITED_CAUSE = 28,
284 STORE_PROHIBITED_CAUSE,
285
286 COPROCESSOR0_DISABLED = 32,
287 };
288
289 typedef enum {
290 INTTYPE_LEVEL,
291 INTTYPE_EDGE,
292 INTTYPE_NMI,
293 INTTYPE_SOFTWARE,
294 INTTYPE_TIMER,
295 INTTYPE_DEBUG,
296 INTTYPE_WRITE_ERR,
297 INTTYPE_PROFILING,
298 INTTYPE_IDMA_DONE,
299 INTTYPE_IDMA_ERR,
300 INTTYPE_GS_ERR,
301 INTTYPE_MAX
302 } interrupt_type;
303
304 struct CPUXtensaState;
305
306 typedef struct xtensa_tlb_entry {
307 uint32_t vaddr;
308 uint32_t paddr;
309 uint8_t asid;
310 uint8_t attr;
311 bool variable;
312 } xtensa_tlb_entry;
313
314 typedef struct xtensa_tlb {
315 unsigned nways;
316 const unsigned way_size[10];
317 bool varway56;
318 unsigned nrefillentries;
319 } xtensa_tlb;
320
321 typedef struct xtensa_mpu_entry {
322 uint32_t vaddr;
323 uint32_t attr;
324 } xtensa_mpu_entry;
325
326 typedef struct XtensaGdbReg {
327 int targno;
328 unsigned flags;
329 int type;
330 int group;
331 unsigned size;
332 } XtensaGdbReg;
333
334 typedef struct XtensaGdbRegmap {
335 int num_regs;
336 int num_core_regs;
337 /* PC + a + ar + sr + ur */
338 XtensaGdbReg reg[1 + 16 + 64 + 256 + 256];
339 } XtensaGdbRegmap;
340
341 typedef struct XtensaCcompareTimer {
342 struct CPUXtensaState *env;
343 QEMUTimer *timer;
344 } XtensaCcompareTimer;
345
346 typedef struct XtensaMemory {
347 unsigned num;
348 struct XtensaMemoryRegion {
349 uint32_t addr;
350 uint32_t size;
351 } location[MAX_NMEMORY];
352 } XtensaMemory;
353
354 typedef struct opcode_arg {
355 uint32_t imm;
356 uint32_t raw_imm;
357 void *in;
358 void *out;
359 } OpcodeArg;
360
361 typedef struct DisasContext DisasContext;
362 typedef void (*XtensaOpcodeOp)(DisasContext *dc, const OpcodeArg arg[],
363 const uint32_t par[]);
364 typedef bool (*XtensaOpcodeBoolTest)(DisasContext *dc,
365 const OpcodeArg arg[],
366 const uint32_t par[]);
367 typedef uint32_t (*XtensaOpcodeUintTest)(DisasContext *dc,
368 const OpcodeArg arg[],
369 const uint32_t par[]);
370
371 enum {
372 XTENSA_OP_ILL = 0x1,
373 XTENSA_OP_PRIVILEGED = 0x2,
374 XTENSA_OP_SYSCALL = 0x4,
375 XTENSA_OP_DEBUG_BREAK = 0x8,
376
377 XTENSA_OP_OVERFLOW = 0x10,
378 XTENSA_OP_UNDERFLOW = 0x20,
379 XTENSA_OP_ALLOCA = 0x40,
380 XTENSA_OP_COPROCESSOR = 0x80,
381
382 XTENSA_OP_DIVIDE_BY_ZERO = 0x100,
383
384 /* Postprocessing flags */
385 XTENSA_OP_CHECK_INTERRUPTS = 0x200,
386 XTENSA_OP_EXIT_TB_M1 = 0x400,
387 XTENSA_OP_EXIT_TB_0 = 0x800,
388 XTENSA_OP_SYNC_REGISTER_WINDOW = 0x1000,
389
390 XTENSA_OP_POSTPROCESS =
391 XTENSA_OP_CHECK_INTERRUPTS |
392 XTENSA_OP_EXIT_TB_M1 |
393 XTENSA_OP_EXIT_TB_0 |
394 XTENSA_OP_SYNC_REGISTER_WINDOW,
395
396 XTENSA_OP_NAME_ARRAY = 0x8000,
397
398 XTENSA_OP_CONTROL_FLOW = 0x10000,
399 XTENSA_OP_STORE = 0x20000,
400 XTENSA_OP_LOAD = 0x40000,
401 XTENSA_OP_LOAD_STORE =
402 XTENSA_OP_LOAD | XTENSA_OP_STORE,
403 };
404
405 typedef struct XtensaOpcodeOps {
406 const void *name;
407 XtensaOpcodeOp translate;
408 XtensaOpcodeBoolTest test_ill;
409 XtensaOpcodeUintTest test_overflow;
410 const uint32_t *par;
411 uint32_t op_flags;
412 uint32_t coprocessor;
413 } XtensaOpcodeOps;
414
415 typedef struct XtensaOpcodeTranslators {
416 unsigned num_opcodes;
417 const XtensaOpcodeOps *opcode;
418 } XtensaOpcodeTranslators;
419
420 extern const XtensaOpcodeTranslators xtensa_core_opcodes;
421 extern const XtensaOpcodeTranslators xtensa_fpu2000_opcodes;
422
423 struct XtensaConfig {
424 const char *name;
425 uint64_t options;
426 XtensaGdbRegmap gdb_regmap;
427 unsigned nareg;
428 int excm_level;
429 int ndepc;
430 unsigned inst_fetch_width;
431 unsigned max_insn_size;
432 uint32_t vecbase;
433 uint32_t exception_vector[EXC_MAX];
434 unsigned ninterrupt;
435 unsigned nlevel;
436 uint32_t interrupt_vector[MAX_NLEVEL + MAX_NNMI + 1];
437 uint32_t level_mask[MAX_NLEVEL + MAX_NNMI + 1];
438 uint32_t inttype_mask[INTTYPE_MAX];
439 struct {
440 uint32_t level;
441 interrupt_type inttype;
442 } interrupt[MAX_NINTERRUPT];
443 unsigned nccompare;
444 uint32_t timerint[MAX_NCCOMPARE];
445 unsigned nextint;
446 unsigned extint[MAX_NINTERRUPT];
447
448 unsigned debug_level;
449 unsigned nibreak;
450 unsigned ndbreak;
451
452 unsigned icache_ways;
453 unsigned dcache_ways;
454 unsigned dcache_line_bytes;
455 uint32_t memctl_mask;
456
457 XtensaMemory instrom;
458 XtensaMemory instram;
459 XtensaMemory datarom;
460 XtensaMemory dataram;
461 XtensaMemory sysrom;
462 XtensaMemory sysram;
463
464 uint32_t configid[2];
465
466 void *isa_internal;
467 xtensa_isa isa;
468 XtensaOpcodeOps **opcode_ops;
469 const XtensaOpcodeTranslators **opcode_translators;
470 xtensa_regfile a_regfile;
471 void ***regfile;
472
473 uint32_t clock_freq_khz;
474
475 xtensa_tlb itlb;
476 xtensa_tlb dtlb;
477
478 uint32_t mpu_align;
479 unsigned n_mpu_fg_segments;
480 unsigned n_mpu_bg_segments;
481 const xtensa_mpu_entry *mpu_bg;
482 };
483
484 typedef struct XtensaConfigList {
485 const XtensaConfig *config;
486 struct XtensaConfigList *next;
487 } XtensaConfigList;
488
489 #ifdef HOST_WORDS_BIGENDIAN
490 enum {
491 FP_F32_HIGH,
492 FP_F32_LOW,
493 };
494 #else
495 enum {
496 FP_F32_LOW,
497 FP_F32_HIGH,
498 };
499 #endif
500
501 typedef struct CPUXtensaState {
502 const XtensaConfig *config;
503 uint32_t regs[16];
504 uint32_t pc;
505 uint32_t sregs[256];
506 uint32_t uregs[256];
507 uint32_t phys_regs[MAX_NAREG];
508 union {
509 float32 f32[2];
510 float64 f64;
511 } fregs[16];
512 float_status fp_status;
513 uint32_t windowbase_next;
514 uint32_t exclusive_addr;
515 uint32_t exclusive_val;
516
517 #ifndef CONFIG_USER_ONLY
518 xtensa_tlb_entry itlb[7][MAX_TLB_WAY_SIZE];
519 xtensa_tlb_entry dtlb[10][MAX_TLB_WAY_SIZE];
520 xtensa_mpu_entry mpu_fg[MAX_MPU_FOREGROUND_SEGMENTS];
521 unsigned autorefill_idx;
522 bool runstall;
523 AddressSpace *address_space_er;
524 MemoryRegion *system_er;
525 int pending_irq_level; /* level of last raised IRQ */
526 qemu_irq *irq_inputs;
527 qemu_irq ext_irq_inputs[MAX_NINTERRUPT];
528 qemu_irq runstall_irq;
529 XtensaCcompareTimer ccompare[MAX_NCCOMPARE];
530 uint64_t time_base;
531 uint64_t ccount_time;
532 uint32_t ccount_base;
533 #endif
534
535 int exception_taken;
536 int yield_needed;
537 unsigned static_vectors;
538
539 /* Watchpoints for DBREAK registers */
540 struct CPUWatchpoint *cpu_watchpoint[MAX_NDBREAK];
541 } CPUXtensaState;
542
543 /**
544 * XtensaCPU:
545 * @env: #CPUXtensaState
546 *
547 * An Xtensa CPU.
548 */
549 struct XtensaCPU {
550 /*< private >*/
551 CPUState parent_obj;
552 /*< public >*/
553
554 CPUNegativeOffsetState neg;
555 CPUXtensaState env;
556 };
557
558
559 bool xtensa_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
560 MMUAccessType access_type, int mmu_idx,
561 bool probe, uintptr_t retaddr);
562 void xtensa_cpu_do_interrupt(CPUState *cpu);
563 bool xtensa_cpu_exec_interrupt(CPUState *cpu, int interrupt_request);
564 void xtensa_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, vaddr addr,
565 unsigned size, MMUAccessType access_type,
566 int mmu_idx, MemTxAttrs attrs,
567 MemTxResult response, uintptr_t retaddr);
568 void xtensa_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
569 hwaddr xtensa_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
570 void xtensa_count_regs(const XtensaConfig *config,
571 unsigned *n_regs, unsigned *n_core_regs);
572 int xtensa_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
573 int xtensa_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
574 void xtensa_cpu_do_unaligned_access(CPUState *cpu, vaddr addr,
575 MMUAccessType access_type,
576 int mmu_idx, uintptr_t retaddr);
577
578 #define cpu_signal_handler cpu_xtensa_signal_handler
579 #define cpu_list xtensa_cpu_list
580
581 #define XTENSA_CPU_TYPE_SUFFIX "-" TYPE_XTENSA_CPU
582 #define XTENSA_CPU_TYPE_NAME(model) model XTENSA_CPU_TYPE_SUFFIX
583 #define CPU_RESOLVING_TYPE TYPE_XTENSA_CPU
584
585 #ifdef TARGET_WORDS_BIGENDIAN
586 #define XTENSA_DEFAULT_CPU_MODEL "fsf"
587 #define XTENSA_DEFAULT_CPU_NOMMU_MODEL "fsf"
588 #else
589 #define XTENSA_DEFAULT_CPU_MODEL "dc232b"
590 #define XTENSA_DEFAULT_CPU_NOMMU_MODEL "de212"
591 #endif
592 #define XTENSA_DEFAULT_CPU_TYPE \
593 XTENSA_CPU_TYPE_NAME(XTENSA_DEFAULT_CPU_MODEL)
594 #define XTENSA_DEFAULT_CPU_NOMMU_TYPE \
595 XTENSA_CPU_TYPE_NAME(XTENSA_DEFAULT_CPU_NOMMU_MODEL)
596
597 void xtensa_collect_sr_names(const XtensaConfig *config);
598 void xtensa_translate_init(void);
599 void **xtensa_get_regfile_by_name(const char *name);
600 void xtensa_breakpoint_handler(CPUState *cs);
601 void xtensa_register_core(XtensaConfigList *node);
602 void xtensa_sim_open_console(Chardev *chr);
603 void check_interrupts(CPUXtensaState *s);
604 void xtensa_irq_init(CPUXtensaState *env);
605 qemu_irq *xtensa_get_extints(CPUXtensaState *env);
606 qemu_irq xtensa_get_runstall(CPUXtensaState *env);
607 int cpu_xtensa_signal_handler(int host_signum, void *pinfo, void *puc);
608 void xtensa_cpu_list(void);
609 void xtensa_sync_window_from_phys(CPUXtensaState *env);
610 void xtensa_sync_phys_from_window(CPUXtensaState *env);
611 void xtensa_rotate_window(CPUXtensaState *env, uint32_t delta);
612 void xtensa_restore_owb(CPUXtensaState *env);
613 void debug_exception_env(CPUXtensaState *new_env, uint32_t cause);
614
615 static inline void xtensa_select_static_vectors(CPUXtensaState *env,
616 unsigned n)
617 {
618 assert(n < 2);
619 env->static_vectors = n;
620 }
621 void xtensa_runstall(CPUXtensaState *env, bool runstall);
622
623 #define XTENSA_OPTION_BIT(opt) (((uint64_t)1) << (opt))
624 #define XTENSA_OPTION_ALL (~(uint64_t)0)
625
626 static inline bool xtensa_option_bits_enabled(const XtensaConfig *config,
627 uint64_t opt)
628 {
629 return (config->options & opt) != 0;
630 }
631
632 static inline bool xtensa_option_enabled(const XtensaConfig *config, int opt)
633 {
634 return xtensa_option_bits_enabled(config, XTENSA_OPTION_BIT(opt));
635 }
636
637 static inline int xtensa_get_cintlevel(const CPUXtensaState *env)
638 {
639 int level = (env->sregs[PS] & PS_INTLEVEL) >> PS_INTLEVEL_SHIFT;
640 if ((env->sregs[PS] & PS_EXCM) && env->config->excm_level > level) {
641 level = env->config->excm_level;
642 }
643 return level;
644 }
645
646 static inline int xtensa_get_ring(const CPUXtensaState *env)
647 {
648 if (xtensa_option_bits_enabled(env->config,
649 XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) |
650 XTENSA_OPTION_BIT(XTENSA_OPTION_MPU))) {
651 return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT;
652 } else {
653 return 0;
654 }
655 }
656
657 static inline int xtensa_get_cring(const CPUXtensaState *env)
658 {
659 if (xtensa_option_bits_enabled(env->config,
660 XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) |
661 XTENSA_OPTION_BIT(XTENSA_OPTION_MPU)) &&
662 (env->sregs[PS] & PS_EXCM) == 0) {
663 return (env->sregs[PS] & PS_RING) >> PS_RING_SHIFT;
664 } else {
665 return 0;
666 }
667 }
668
669 #ifndef CONFIG_USER_ONLY
670 int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb,
671 uint32_t vaddr, int is_write, int mmu_idx,
672 uint32_t *paddr, uint32_t *page_size, unsigned *access);
673 void reset_mmu(CPUXtensaState *env);
674 void dump_mmu(CPUXtensaState *env);
675
676 static inline MemoryRegion *xtensa_get_er_region(CPUXtensaState *env)
677 {
678 return env->system_er;
679 }
680 #else
681 void xtensa_set_abi_call0(void);
682 bool xtensa_abi_call0(void);
683 #endif
684
685 static inline uint32_t xtensa_replicate_windowstart(CPUXtensaState *env)
686 {
687 return env->sregs[WINDOW_START] |
688 (env->sregs[WINDOW_START] << env->config->nareg / 4);
689 }
690
691 /* MMU modes definitions */
692 #define MMU_USER_IDX 3
693
694 static inline int cpu_mmu_index(CPUXtensaState *env, bool ifetch)
695 {
696 return xtensa_get_cring(env);
697 }
698
699 #define XTENSA_TBFLAG_RING_MASK 0x3
700 #define XTENSA_TBFLAG_EXCM 0x4
701 #define XTENSA_TBFLAG_LITBASE 0x8
702 #define XTENSA_TBFLAG_DEBUG 0x10
703 #define XTENSA_TBFLAG_ICOUNT 0x20
704 #define XTENSA_TBFLAG_CPENABLE_MASK 0x3fc0
705 #define XTENSA_TBFLAG_CPENABLE_SHIFT 6
706 #define XTENSA_TBFLAG_EXCEPTION 0x4000
707 #define XTENSA_TBFLAG_WINDOW_MASK 0x18000
708 #define XTENSA_TBFLAG_WINDOW_SHIFT 15
709 #define XTENSA_TBFLAG_YIELD 0x20000
710 #define XTENSA_TBFLAG_CWOE 0x40000
711 #define XTENSA_TBFLAG_CALLINC_MASK 0x180000
712 #define XTENSA_TBFLAG_CALLINC_SHIFT 19
713
714 #define XTENSA_CSBASE_LEND_MASK 0x0000ffff
715 #define XTENSA_CSBASE_LEND_SHIFT 0
716 #define XTENSA_CSBASE_LBEG_OFF_MASK 0x00ff0000
717 #define XTENSA_CSBASE_LBEG_OFF_SHIFT 16
718
719 typedef CPUXtensaState CPUArchState;
720 typedef XtensaCPU ArchCPU;
721
722 #include "exec/cpu-all.h"
723
724 static inline void cpu_get_tb_cpu_state(CPUXtensaState *env, target_ulong *pc,
725 target_ulong *cs_base, uint32_t *flags)
726 {
727 CPUState *cs = env_cpu(env);
728
729 *pc = env->pc;
730 *cs_base = 0;
731 *flags = 0;
732 *flags |= xtensa_get_ring(env);
733 if (env->sregs[PS] & PS_EXCM) {
734 *flags |= XTENSA_TBFLAG_EXCM;
735 } else if (xtensa_option_enabled(env->config, XTENSA_OPTION_LOOP)) {
736 target_ulong lend_dist =
737 env->sregs[LEND] - (env->pc & -(1u << TARGET_PAGE_BITS));
738
739 /*
740 * 0 in the csbase_lend field means that there may not be a loopback
741 * for any instruction that starts inside this page. Any other value
742 * means that an instruction that ends at this offset from the page
743 * start may loop back and will need loopback code to be generated.
744 *
745 * lend_dist is 0 when LEND points to the start of the page, but
746 * no instruction that starts inside this page may end at offset 0,
747 * so it's still correct.
748 *
749 * When an instruction ends at a page boundary it may only start in
750 * the previous page. lend_dist will be encoded as TARGET_PAGE_SIZE
751 * for the TB that contains this instruction.
752 */
753 if (lend_dist < (1u << TARGET_PAGE_BITS) + env->config->max_insn_size) {
754 target_ulong lbeg_off = env->sregs[LEND] - env->sregs[LBEG];
755
756 *cs_base = lend_dist;
757 if (lbeg_off < 256) {
758 *cs_base |= lbeg_off << XTENSA_CSBASE_LBEG_OFF_SHIFT;
759 }
760 }
761 }
762 if (xtensa_option_enabled(env->config, XTENSA_OPTION_EXTENDED_L32R) &&
763 (env->sregs[LITBASE] & 1)) {
764 *flags |= XTENSA_TBFLAG_LITBASE;
765 }
766 if (xtensa_option_enabled(env->config, XTENSA_OPTION_DEBUG)) {
767 if (xtensa_get_cintlevel(env) < env->config->debug_level) {
768 *flags |= XTENSA_TBFLAG_DEBUG;
769 }
770 if (xtensa_get_cintlevel(env) < env->sregs[ICOUNTLEVEL]) {
771 *flags |= XTENSA_TBFLAG_ICOUNT;
772 }
773 }
774 if (xtensa_option_enabled(env->config, XTENSA_OPTION_COPROCESSOR)) {
775 *flags |= env->sregs[CPENABLE] << XTENSA_TBFLAG_CPENABLE_SHIFT;
776 }
777 if (cs->singlestep_enabled && env->exception_taken) {
778 *flags |= XTENSA_TBFLAG_EXCEPTION;
779 }
780 if (xtensa_option_enabled(env->config, XTENSA_OPTION_WINDOWED_REGISTER) &&
781 (env->sregs[PS] & (PS_WOE | PS_EXCM)) == PS_WOE) {
782 uint32_t windowstart = xtensa_replicate_windowstart(env) >>
783 (env->sregs[WINDOW_BASE] + 1);
784 uint32_t w = ctz32(windowstart | 0x8);
785
786 *flags |= (w << XTENSA_TBFLAG_WINDOW_SHIFT) | XTENSA_TBFLAG_CWOE;
787 *flags |= extract32(env->sregs[PS], PS_CALLINC_SHIFT,
788 PS_CALLINC_LEN) << XTENSA_TBFLAG_CALLINC_SHIFT;
789 } else {
790 *flags |= 3 << XTENSA_TBFLAG_WINDOW_SHIFT;
791 }
792 if (env->yield_needed) {
793 *flags |= XTENSA_TBFLAG_YIELD;
794 }
795 }
796
797 #endif