1 #if !defined (__MIPS_CPU_H__)
2 #define __MIPS_CPU_H__
3
4 //#define DEBUG_OP
5
6 #define TARGET_HAS_ICE 1
7
8 #define ELF_MACHINE EM_MIPS
9
10 // TODO(digit): Remove this define.
11 #define CPUOldState struct CPUMIPSState
12
13 #define CPUArchState struct CPUMIPSState
14
15 #include "config.h"
16 #include "qemu-common.h"
17 #include "mips-defs.h"
18 #include "exec/cpu-defs.h"
19 #include "fpu/softfloat.h"
20
21 // uint_fast8_t and uint_fast16_t not in <sys/int_types.h>
22 // XXX: move that elsewhere
23 #if defined(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 10
24 typedef unsigned char uint_fast8_t;
25 typedef unsigned int uint_fast16_t;
26 #endif
27
28 struct CPUMIPSState;
29
30 typedef struct r4k_tlb_t r4k_tlb_t;
31 struct r4k_tlb_t {
32 target_ulong VPN;
33 uint32_t PageMask;
34 uint_fast8_t ASID;
35 uint_fast16_t G:1;
36 uint_fast16_t C0:3;
37 uint_fast16_t C1:3;
38 uint_fast16_t V0:1;
39 uint_fast16_t V1:1;
40 uint_fast16_t D0:1;
41 uint_fast16_t D1:1;
42 target_ulong PFN[2];
43 };
44
45 #if !defined(CONFIG_USER_ONLY)
46 typedef struct CPUMIPSTLBContext CPUMIPSTLBContext;
47 struct CPUMIPSTLBContext {
48 uint32_t nb_tlb;
49 int (*map_address) (struct CPUMIPSState *env, hwaddr *physical, int *prot, target_ulong address, int rw, int access_type);
50 void (*helper_tlbwi)(struct CPUMIPSState *env);
51 void (*helper_tlbwr)(struct CPUMIPSState *env);
52 void (*helper_tlbp)(struct CPUMIPSState *env);
53 void (*helper_tlbr)(struct CPUMIPSState *env);
54 union {
55 struct {
56 r4k_tlb_t tlb[MIPS_TLB_MAX];
57 } r4k;
58 } mmu;
59 };
60 #endif
61
62 typedef union fpr_t fpr_t;
63 union fpr_t {
64 float64 fd; /* ieee double precision */
65 float32 fs[2];/* ieee single precision */
66 uint64_t d; /* binary double fixed-point */
67 uint32_t w[2]; /* binary single fixed-point */
68 };
69 /* define FP_ENDIAN_IDX to access the same location
70 * in the fpr_t union regardless of the host endianness
71 */
72 #if defined(HOST_WORDS_BIGENDIAN)
73 # define FP_ENDIAN_IDX 1
74 #else
75 # define FP_ENDIAN_IDX 0
76 #endif
77
78 typedef struct CPUMIPSFPUContext CPUMIPSFPUContext;
79 struct CPUMIPSFPUContext {
80 /* Floating point registers */
81 fpr_t fpr[32];
82 float_status fp_status;
83 /* fpu implementation/revision register (fir) */
84 uint32_t fcr0;
85 #define FCR0_F64 22
86 #define FCR0_L 21
87 #define FCR0_W 20
88 #define FCR0_3D 19
89 #define FCR0_PS 18
90 #define FCR0_D 17
91 #define FCR0_S 16
92 #define FCR0_PRID 8
93 #define FCR0_REV 0
94 /* fcsr */
95 uint32_t fcr31;
96 #define SET_FP_COND(num,env) do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
97 #define CLEAR_FP_COND(num,env) do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
98 #define GET_FP_COND(env) ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1))
99 #define GET_FP_CAUSE(reg) (((reg) >> 12) & 0x3f)
100 #define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
101 #define GET_FP_FLAGS(reg) (((reg) >> 2) & 0x1f)
102 #define SET_FP_CAUSE(reg,v) do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0)
103 #define SET_FP_ENABLE(reg,v) do { (reg) = ((reg) & ~(0x1f << 7)) | ((v & 0x1f) << 7); } while(0)
104 #define SET_FP_FLAGS(reg,v) do { (reg) = ((reg) & ~(0x1f << 2)) | ((v & 0x1f) << 2); } while(0)
105 #define UPDATE_FP_FLAGS(reg,v) do { (reg) |= ((v & 0x1f) << 2); } while(0)
106 #define FP_INEXACT 1
107 #define FP_UNDERFLOW 2
108 #define FP_OVERFLOW 4
109 #define FP_DIV0 8
110 #define FP_INVALID 16
111 #define FP_UNIMPLEMENTED 32
112 };
113
114 #define NB_MMU_MODES 3
115
116 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;
117 struct CPUMIPSMVPContext {
118 int32_t CP0_MVPControl;
119 #define CP0MVPCo_CPA 3
120 #define CP0MVPCo_STLB 2
121 #define CP0MVPCo_VPC 1
122 #define CP0MVPCo_EVP 0
123 int32_t CP0_MVPConf0;
124 #define CP0MVPC0_M 31
125 #define CP0MVPC0_TLBS 29
126 #define CP0MVPC0_GS 28
127 #define CP0MVPC0_PCP 27
128 #define CP0MVPC0_PTLBE 16
129 #define CP0MVPC0_TCA 15
130 #define CP0MVPC0_PVPE 10
131 #define CP0MVPC0_PTC 0
132 int32_t CP0_MVPConf1;
133 #define CP0MVPC1_CIM 31
134 #define CP0MVPC1_CIF 30
135 #define CP0MVPC1_PCX 20
136 #define CP0MVPC1_PCP2 10
137 #define CP0MVPC1_PCP1 0
138 };
139
140 typedef struct mips_def_t mips_def_t;
141
142 #define MIPS_SHADOW_SET_MAX 16
143 #define MIPS_TC_MAX 5
144 #define MIPS_FPU_MAX 1
145 #define MIPS_DSP_ACC 4
146
147 typedef struct TCState TCState;
148 struct TCState {
149 target_ulong gpr[32];
150 target_ulong PC;
151 target_ulong HI[MIPS_DSP_ACC];
152 target_ulong LO[MIPS_DSP_ACC];
153 target_ulong ACX[MIPS_DSP_ACC];
154 target_ulong DSPControl;
155 int32_t CP0_TCStatus;
156 #define CP0TCSt_TCU3 31
157 #define CP0TCSt_TCU2 30
158 #define CP0TCSt_TCU1 29
159 #define CP0TCSt_TCU0 28
160 #define CP0TCSt_TMX 27
161 #define CP0TCSt_RNST 23
162 #define CP0TCSt_TDS 21
163 #define CP0TCSt_DT 20
164 #define CP0TCSt_DA 15
165 #define CP0TCSt_A 13
166 #define CP0TCSt_TKSU 11
167 #define CP0TCSt_IXMT 10
168 #define CP0TCSt_TASID 0
169 int32_t CP0_TCBind;
170 #define CP0TCBd_CurTC 21
171 #define CP0TCBd_TBE 17
172 #define CP0TCBd_CurVPE 0
173 target_ulong CP0_TCHalt;
174 target_ulong CP0_TCContext;
175 target_ulong CP0_TCSchedule;
176 target_ulong CP0_TCScheFBack;
177 int32_t CP0_Debug_tcstatus;
178 };
179
180 typedef struct CPUMIPSState CPUMIPSState;
181 struct CPUMIPSState {
182 TCState active_tc;
183 CPUMIPSFPUContext active_fpu;
184
185 uint32_t current_tc;
186 uint32_t current_fpu;
187
188 uint32_t SEGBITS;
189 uint32_t PABITS;
190 target_ulong SEGMask;
191 target_ulong PAMask;
192
193 int32_t CP0_Index;
194 /* CP0_MVP* are per MVP registers. */
195 int32_t CP0_Random;
196 int32_t CP0_VPEControl;
197 #define CP0VPECo_YSI 21
198 #define CP0VPECo_GSI 20
199 #define CP0VPECo_EXCPT 16
200 #define CP0VPECo_TE 15
201 #define CP0VPECo_TargTC 0
202 int32_t CP0_VPEConf0;
203 #define CP0VPEC0_M 31
204 #define CP0VPEC0_XTC 21
205 #define CP0VPEC0_TCS 19
206 #define CP0VPEC0_SCS 18
207 #define CP0VPEC0_DSC 17
208 #define CP0VPEC0_ICS 16
209 #define CP0VPEC0_MVP 1
210 #define CP0VPEC0_VPA 0
211 int32_t CP0_VPEConf1;
212 #define CP0VPEC1_NCX 20
213 #define CP0VPEC1_NCP2 10
214 #define CP0VPEC1_NCP1 0
215 target_ulong CP0_YQMask;
216 target_ulong CP0_VPESchedule;
217 target_ulong CP0_VPEScheFBack;
218 int32_t CP0_VPEOpt;
219 #define CP0VPEOpt_IWX7 15
220 #define CP0VPEOpt_IWX6 14
221 #define CP0VPEOpt_IWX5 13
222 #define CP0VPEOpt_IWX4 12
223 #define CP0VPEOpt_IWX3 11
224 #define CP0VPEOpt_IWX2 10
225 #define CP0VPEOpt_IWX1 9
226 #define CP0VPEOpt_IWX0 8
227 #define CP0VPEOpt_DWX7 7
228 #define CP0VPEOpt_DWX6 6
229 #define CP0VPEOpt_DWX5 5
230 #define CP0VPEOpt_DWX4 4
231 #define CP0VPEOpt_DWX3 3
232 #define CP0VPEOpt_DWX2 2
233 #define CP0VPEOpt_DWX1 1
234 #define CP0VPEOpt_DWX0 0
235 target_ulong CP0_EntryLo0;
236 target_ulong CP0_EntryLo1;
237 target_ulong CP0_Context;
238 int32_t CP0_PageMask;
239 int32_t CP0_PageGrain;
240 int32_t CP0_Wired;
241 int32_t CP0_SRSConf0_rw_bitmask;
242 int32_t CP0_SRSConf0;
243 #define CP0SRSC0_M 31
244 #define CP0SRSC0_SRS3 20
245 #define CP0SRSC0_SRS2 10
246 #define CP0SRSC0_SRS1 0
247 int32_t CP0_SRSConf1_rw_bitmask;
248 int32_t CP0_SRSConf1;
249 #define CP0SRSC1_M 31
250 #define CP0SRSC1_SRS6 20
251 #define CP0SRSC1_SRS5 10
252 #define CP0SRSC1_SRS4 0
253 int32_t CP0_SRSConf2_rw_bitmask;
254 int32_t CP0_SRSConf2;
255 #define CP0SRSC2_M 31
256 #define CP0SRSC2_SRS9 20
257 #define CP0SRSC2_SRS8 10
258 #define CP0SRSC2_SRS7 0
259 int32_t CP0_SRSConf3_rw_bitmask;
260 int32_t CP0_SRSConf3;
261 #define CP0SRSC3_M 31
262 #define CP0SRSC3_SRS12 20
263 #define CP0SRSC3_SRS11 10
264 #define CP0SRSC3_SRS10 0
265 int32_t CP0_SRSConf4_rw_bitmask;
266 int32_t CP0_SRSConf4;
267 #define CP0SRSC4_SRS15 20
268 #define CP0SRSC4_SRS14 10
269 #define CP0SRSC4_SRS13 0
270 int32_t CP0_HWREna;
271 target_ulong CP0_BadVAddr;
272 int32_t CP0_Count;
273 target_ulong CP0_EntryHi;
274 int32_t CP0_Compare;
275 int32_t CP0_Status;
276 #define CP0St_CU3 31
277 #define CP0St_CU2 30
278 #define CP0St_CU1 29
279 #define CP0St_CU0 28
280 #define CP0St_RP 27
281 #define CP0St_FR 26
282 #define CP0St_RE 25
283 #define CP0St_MX 24
284 #define CP0St_PX 23
285 #define CP0St_BEV 22
286 #define CP0St_TS 21
287 #define CP0St_SR 20
288 #define CP0St_NMI 19
289 #define CP0St_IM 8
290 #define CP0St_KX 7
291 #define CP0St_SX 6
292 #define CP0St_UX 5
293 #define CP0St_KSU 3
294 #define CP0St_ERL 2
295 #define CP0St_EXL 1
296 #define CP0St_IE 0
297 int32_t CP0_IntCtl;
298 #define CP0IntCtl_IPTI 29
299 #define CP0IntCtl_IPPC1 26
300 #define CP0IntCtl_VS 5
301 int32_t CP0_SRSCtl;
302 #define CP0SRSCtl_HSS 26
303 #define CP0SRSCtl_EICSS 18
304 #define CP0SRSCtl_ESS 12
305 #define CP0SRSCtl_PSS 6
306 #define CP0SRSCtl_CSS 0
307 int32_t CP0_SRSMap;
308 #define CP0SRSMap_SSV7 28
309 #define CP0SRSMap_SSV6 24
310 #define CP0SRSMap_SSV5 20
311 #define CP0SRSMap_SSV4 16
312 #define CP0SRSMap_SSV3 12
313 #define CP0SRSMap_SSV2 8
314 #define CP0SRSMap_SSV1 4
315 #define CP0SRSMap_SSV0 0
316 int32_t CP0_Cause;
317 #define CP0Ca_BD 31
318 #define CP0Ca_TI 30
319 #define CP0Ca_CE 28
320 #define CP0Ca_DC 27
321 #define CP0Ca_PCI 26
322 #define CP0Ca_IV 23
323 #define CP0Ca_WP 22
324 #define CP0Ca_IP 8
325 #define CP0Ca_IP_mask 0x0000FF00
326 #define CP0Ca_EC 2
327 target_ulong CP0_EPC;
328 int32_t CP0_PRid;
329 int32_t CP0_EBase;
330 int32_t CP0_Config0;
331 #define CP0C0_M 31
332 #define CP0C0_K23 28
333 #define CP0C0_KU 25
334 #define CP0C0_MDU 20
335 #define CP0C0_MM 17
336 #define CP0C0_BM 16
337 #define CP0C0_BE 15
338 #define CP0C0_AT 13
339 #define CP0C0_AR 10
340 #define CP0C0_MT 7
341 #define CP0C0_VI 3
342 #define CP0C0_K0 0
343 int32_t CP0_Config1;
344 #define CP0C1_M 31
345 #define CP0C1_MMU 25
346 #define CP0C1_IS 22
347 #define CP0C1_IL 19
348 #define CP0C1_IA 16
349 #define CP0C1_DS 13
350 #define CP0C1_DL 10
351 #define CP0C1_DA 7
352 #define CP0C1_C2 6
353 #define CP0C1_MD 5
354 #define CP0C1_PC 4
355 #define CP0C1_WR 3
356 #define CP0C1_CA 2
357 #define CP0C1_EP 1
358 #define CP0C1_FP 0
359 int32_t CP0_Config2;
360 #define CP0C2_M 31
361 #define CP0C2_TU 28
362 #define CP0C2_TS 24
363 #define CP0C2_TL 20
364 #define CP0C2_TA 16
365 #define CP0C2_SU 12
366 #define CP0C2_SS 8
367 #define CP0C2_SL 4
368 #define CP0C2_SA 0
369 int32_t CP0_Config3;
370 #define CP0C3_M 31
371 #define CP0C3_ISA_ON_EXC 16
372 #define CP0C3_DSPP 10
373 #define CP0C3_LPA 7
374 #define CP0C3_VEIC 6
375 #define CP0C3_VInt 5
376 #define CP0C3_SP 4
377 #define CP0C3_MT 2
378 #define CP0C3_SM 1
379 #define CP0C3_TL 0
380 int32_t CP0_Config6;
381 int32_t CP0_Config7;
382 /* XXX: Maybe make LLAddr per-TC? */
383 target_ulong lladdr;
384 target_ulong llval;
385 target_ulong llnewval;
386 target_ulong llreg;
387 target_ulong CP0_LLAddr_rw_bitmask;
388 int CP0_LLAddr_shift;
389 target_ulong CP0_WatchLo[8];
390 int32_t CP0_WatchHi[8];
391 target_ulong CP0_XContext;
392 int32_t CP0_Framemask;
393 int32_t CP0_Debug;
394 #define CP0DB_DBD 31
395 #define CP0DB_DM 30
396 #define CP0DB_LSNM 28
397 #define CP0DB_Doze 27
398 #define CP0DB_Halt 26
399 #define CP0DB_CNT 25
400 #define CP0DB_IBEP 24
401 #define CP0DB_DBEP 21
402 #define CP0DB_IEXI 20
403 #define CP0DB_VER 15
404 #define CP0DB_DEC 10
405 #define CP0DB_SSt 8
406 #define CP0DB_DINT 5
407 #define CP0DB_DIB 4
408 #define CP0DB_DDBS 3
409 #define CP0DB_DDBL 2
410 #define CP0DB_DBp 1
411 #define CP0DB_DSS 0
412 target_ulong CP0_DEPC;
413 int32_t CP0_Performance0;
414 int32_t CP0_TagLo;
415 int32_t CP0_DataLo;
416 int32_t CP0_TagHi;
417 int32_t CP0_DataHi;
418 target_ulong CP0_ErrorEPC;
419 int32_t CP0_DESAVE;
420 /* We waste some space so we can handle shadow registers like TCs. */
421 TCState tcs[MIPS_SHADOW_SET_MAX];
422 CPUMIPSFPUContext fpus[MIPS_FPU_MAX];
423 /* QEMU */
424 int error_code;
425 uint32_t hflags; /* CPU State */
426 /* TMASK defines different execution modes */
427 #define MIPS_HFLAG_TMASK 0x03FF
428 #define MIPS_HFLAG_MODE 0x0007 /* execution modes */
429 /* The KSU flags must be the lowest bits in hflags. The flag order
430 must be the same as defined for CP0 Status. This allows to use
431 the bits as the value of mmu_idx. */
432 #define MIPS_HFLAG_KSU 0x0003 /* kernel/supervisor/user mode mask */
433 #define MIPS_HFLAG_UM 0x0002 /* user mode flag */
434 #define MIPS_HFLAG_SM 0x0001 /* supervisor mode flag */
435 #define MIPS_HFLAG_KM 0x0000 /* kernel mode flag */
436 #define MIPS_HFLAG_DM 0x0004 /* Debug mode */
437 #define MIPS_HFLAG_64 0x0008 /* 64-bit instructions enabled */
438 #define MIPS_HFLAG_CP0 0x0010 /* CP0 enabled */
439 #define MIPS_HFLAG_FPU 0x0020 /* FPU enabled */
440 #define MIPS_HFLAG_F64 0x0040 /* 64-bit FPU enabled */
441 /* True if the MIPS IV COP1X instructions can be used. This also
442 controls the non-COP1X instructions RECIP.S, RECIP.D, RSQRT.S
443 and RSQRT.D. */
444 #define MIPS_HFLAG_COP1X 0x0080 /* COP1X instructions enabled */
445 #define MIPS_HFLAG_RE 0x0100 /* Reversed endianness */
446 #define MIPS_HFLAG_UX 0x0200 /* 64-bit user mode */
447 /* If translation is interrupted between the branch instruction and
448 * the delay slot, record what type of branch it is so that we can
449 * resume translation properly. It might be possible to reduce
450 * this from three bits to two. */
451 #define MIPS_HFLAG_BMASK 0x1C00
452 #define MIPS_HFLAG_B 0x0400 /* Unconditional branch */
453 #define MIPS_HFLAG_BC 0x0800 /* Conditional branch */
454 #define MIPS_HFLAG_BL 0x0C00 /* Likely branch */
455 #define MIPS_HFLAG_BR 0x1000 /* branch to register (can't link TB) */
456 target_ulong btarget; /* Jump / branch target */
457 target_ulong bcond; /* Branch condition (if needed) */
458
459 int SYNCI_Step; /* Address step size for SYNCI */
460 int CCRes; /* Cycle count resolution/divisor */
461 uint32_t CP0_Status_rw_bitmask; /* Read/write bits in CP0_Status */
462 uint32_t CP0_TCStatus_rw_bitmask; /* Read/write bits in CP0_TCStatus */
463 int insn_flags; /* Supported instruction set */
464
465 target_ulong tls_value; /* For usermode emulation */
466
467 CPU_COMMON
468
469 CPUMIPSMVPContext *mvp;
470 #if !defined(CONFIG_USER_ONLY)
471 CPUMIPSTLBContext *tlb;
472 #endif
473
474 const mips_def_t *cpu_model;
475 void *irq[8];
476 struct QEMUTimer *timer; /* Internal timer */
477 };
478
479 #include "cpu-qom.h"
480
481 int no_mmu_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
482 target_ulong address, int rw, int access_type);
483 int fixed_mmu_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
484 target_ulong address, int rw, int access_type);
485 int r4k_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
486 target_ulong address, int rw, int access_type);
487 void r4k_helper_tlbwi(CPUMIPSState *env);
488 void r4k_helper_tlbwr(CPUMIPSState *env);
489 void r4k_helper_tlbp(CPUMIPSState *env);
490 void r4k_helper_tlbr(CPUMIPSState *env);
491 void mips_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
492
493 void cpu_unassigned_access(CPUArchState* env, hwaddr addr,
494 int is_write, int is_exec, int unused, int size);
495
496 #define cpu_init cpu_mips_init
497 #define cpu_exec cpu_mips_exec
498 #define cpu_gen_code cpu_mips_gen_code
499 #define cpu_signal_handler cpu_mips_signal_handler
500 #define cpu_list mips_cpu_list
501
502 #define CPU_SAVE_VERSION 3
503
504 // NOTE(digit): Came from cpu-all.h, to be removed later.
505 #define CPU_INTERRUPT_TIMER 0x08 /* internal timer exception pending */
506
507 /* MMU modes definitions. We carefully match the indices with our
508 hflags layout. */
509 #define MMU_MODE0_SUFFIX _kernel
510 #define MMU_MODE1_SUFFIX _super
511 #define MMU_MODE2_SUFFIX _user
512 #define MMU_USER_IDX 2
cpu_mmu_index(CPUMIPSState * env)513 static inline int cpu_mmu_index (CPUMIPSState *env)
514 {
515 return env->hflags & MIPS_HFLAG_KSU;
516 }
517
is_cpu_user(CPUMIPSState * env)518 static inline int is_cpu_user (CPUMIPSState *env)
519 {
520 #ifdef CONFIG_USER_ONLY
521 return 1;
522 #else
523 return ((env->CP0_Status &
524 ((3 << CP0St_KSU) | (1 << CP0St_ERL) | (1 << CP0St_EXL))) == (3 << CP0St_KSU));
525 #endif // CONFIG_USER_ONLY
526 }
527
cpu_clone_regs(CPUMIPSState * env,target_ulong newsp)528 static inline void cpu_clone_regs(CPUMIPSState *env, target_ulong newsp)
529 {
530 if (newsp)
531 env->active_tc.gpr[29] = newsp;
532 env->active_tc.gpr[7] = 0;
533 env->active_tc.gpr[2] = 0;
534 }
535
cpu_mips_hw_interrupts_pending(CPUMIPSState * env)536 static inline int cpu_mips_hw_interrupts_pending(CPUMIPSState *env)
537 {
538 int32_t pending;
539 int32_t status;
540 int r;
541
542 if (!(env->CP0_Status & (1 << CP0St_IE)) ||
543 (env->CP0_Status & (1 << CP0St_EXL)) ||
544 (env->CP0_Status & (1 << CP0St_ERL)) ||
545 (env->hflags & MIPS_HFLAG_DM)) {
546 /* Interrupts are disabled */
547 return 0;
548 }
549
550 pending = env->CP0_Cause & CP0Ca_IP_mask;
551 status = env->CP0_Status & CP0Ca_IP_mask;
552
553 if (env->CP0_Config3 & (1 << CP0C3_VEIC)) {
554 /* A MIPS configured with a vectorizing external interrupt controller
555 will feed a vector into the Cause pending lines. The core treats
556 the status lines as a vector level, not as indiviual masks. */
557 r = pending > status;
558 } else {
559 /* A MIPS configured with compatibility or VInt (Vectored Interrupts)
560 treats the pending lines as individual interrupt lines, the status
561 lines are individual masks. */
562 r = pending & status;
563 }
564 return r;
565 }
566
567 #include "exec/cpu-all.h"
568 #include "exec/exec-all.h"
569
570 /* Memory access type :
571 * may be needed for precise access rights control and precise exceptions.
572 */
573 enum {
574 /* 1 bit to define user level / supervisor access */
575 ACCESS_USER = 0x00,
576 ACCESS_SUPER = 0x01,
577 /* 1 bit to indicate direction */
578 ACCESS_STORE = 0x02,
579 /* Type of instruction that generated the access */
580 ACCESS_CODE = 0x10, /* Code fetch access */
581 ACCESS_INT = 0x20, /* Integer load/store access */
582 ACCESS_FLOAT = 0x30, /* floating point load/store access */
583 };
584
585 /* Exceptions */
586 enum {
587 EXCP_NONE = -1,
588 EXCP_RESET = 0,
589 EXCP_SRESET,
590 EXCP_DSS,
591 EXCP_DINT,
592 EXCP_DDBL,
593 EXCP_DDBS,
594 EXCP_NMI,
595 EXCP_MCHECK,
596 EXCP_EXT_INTERRUPT, /* 8 */
597 EXCP_DFWATCH,
598 EXCP_DIB,
599 EXCP_IWATCH,
600 EXCP_AdEL,
601 EXCP_AdES,
602 EXCP_TLBF,
603 EXCP_IBE,
604 EXCP_DBp, /* 16 */
605 EXCP_SYSCALL,
606 EXCP_BREAK,
607 EXCP_CpU,
608 EXCP_RI,
609 EXCP_OVERFLOW,
610 EXCP_TRAP,
611 EXCP_FPE,
612 EXCP_DWATCH, /* 24 */
613 EXCP_LTLBL,
614 EXCP_TLBL,
615 EXCP_TLBS,
616 EXCP_DBE,
617 EXCP_THREAD,
618 EXCP_MDMX,
619 EXCP_C2E,
620 EXCP_CACHE, /* 32 */
621
622 EXCP_LAST = EXCP_CACHE,
623 };
624 /* Dummy exception for conditional stores. */
625 #define EXCP_SC 0x100
626
627 /*
628 * This is an interrnally generated WAKE request line.
629 * It is driven by the CPU itself. Raised when the MT
630 * block wants to wake a VPE from an inactive state and
631 * cleared when VPE goes from active to inactive.
632 */
633 #define CPU_INTERRUPT_WAKE CPU_INTERRUPT_TGT_INT_0
634
635 int cpu_mips_exec(CPUMIPSState *s);
636 CPUMIPSState *cpu_mips_init(const char *cpu_model);
637 //~ uint32_t cpu_mips_get_clock (void);
638 int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
639
640 /* mips_timer.c */
641 uint32_t cpu_mips_get_random (CPUMIPSState *env);
642 uint32_t cpu_mips_get_count (CPUMIPSState *env);
643 void cpu_mips_store_count (CPUMIPSState *env, uint32_t value);
644 void cpu_mips_store_compare (CPUMIPSState *env, uint32_t value);
645 void cpu_mips_start_count(CPUMIPSState *env);
646 void cpu_mips_stop_count(CPUMIPSState *env);
647
648 /* mips_int.c */
649 void cpu_mips_update_irq (CPUMIPSState *env);
650
651 /* helper.c */
652 int cpu_mips_handle_mmu_fault (CPUMIPSState *env, target_ulong address, int rw,
653 int mmu_idx);
654 #define cpu_handle_mmu_fault cpu_mips_handle_mmu_fault
655 void do_interrupt (CPUMIPSState *env);
656 hwaddr cpu_mips_translate_address (CPUMIPSState *env, target_ulong address,
657 int rw);
658
cpu_get_tb_cpu_state(CPUMIPSState * env,target_ulong * pc,target_ulong * cs_base,int * flags)659 static inline void cpu_get_tb_cpu_state(CPUMIPSState *env, target_ulong *pc,
660 target_ulong *cs_base, int *flags)
661 {
662 *pc = env->active_tc.PC;
663 *cs_base = 0;
664 *flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK);
665 }
666
cpu_set_tls(CPUMIPSState * env,target_ulong newtls)667 static inline void cpu_set_tls(CPUMIPSState *env, target_ulong newtls)
668 {
669 env->tls_value = newtls;
670 }
671
cpu_has_work(CPUState * cpu)672 static inline bool cpu_has_work(CPUState *cpu)
673 {
674 int has_work = 0;
675
676 /* It is implementation dependent if non-enabled interrupts
677 wake-up the CPU, however most of the implementations only
678 check for interrupts that can be taken. */
679 if ((cpu->interrupt_request & CPU_INTERRUPT_HARD) &&
680 cpu_mips_hw_interrupts_pending(cpu->env_ptr)) {
681 has_work = 1;
682 }
683
684 if (cpu->interrupt_request & CPU_INTERRUPT_TIMER) {
685 has_work = 1;
686 }
687
688 return has_work;
689 }
690
cpu_pc_from_tb(CPUMIPSState * env,TranslationBlock * tb)691 static inline void cpu_pc_from_tb(CPUMIPSState *env, TranslationBlock *tb)
692 {
693 env->active_tc.PC = tb->pc;
694 env->hflags &= ~MIPS_HFLAG_BMASK;
695 env->hflags |= tb->flags & MIPS_HFLAG_BMASK;
696 }
697
698 #endif /* !defined (__MIPS_CPU_H__) */
699