target-mips/cpu.h

   1 #if !defined (__MIPS_CPU_H__)
   2 #define __MIPS_CPU_H__
   3
   4 #define TARGET_HAS_ICE 1
   5
   6 #define ELF_MACHINE     EM_MIPS
   7
   8 #define CPUState struct CPUMIPSState
   9
  10 #include "config.h"
  11 #include "mips-defs.h"
  12 #include "cpu-defs.h"
  13 #include "softfloat.h"
  14
  15 // uint_fast8_t and uint_fast16_t not in <sys/int_types.h>
  16 // XXX: move that elsewhere
  17 #if defined(HOST_SOLARIS) && HOST_SOLARIS < 10
  18 typedef unsigned char           uint_fast8_t;
  19 typedef unsigned int            uint_fast16_t;
  20 #endif
  21
  22 struct CPUMIPSState;
  23
  24 typedef struct r4k_tlb_t r4k_tlb_t;
  25 struct r4k_tlb_t {
  26     target_ulong VPN;
  27     uint32_t PageMask;
  28     uint_fast8_t ASID;
  29     uint_fast16_t G:1;
  30     uint_fast16_t C0:3;
  31     uint_fast16_t C1:3;
  32     uint_fast16_t V0:1;
  33     uint_fast16_t V1:1;
  34     uint_fast16_t D0:1;
  35     uint_fast16_t D1:1;
  36     target_ulong PFN[2];
  37 };
  38
  39 typedef struct CPUMIPSTLBContext CPUMIPSTLBContext;
  40 struct CPUMIPSTLBContext {
  41     uint32_t nb_tlb;
  42     uint32_t tlb_in_use;
  43     int (*map_address) (struct CPUMIPSState *env, target_ulong *physical, int *prot, target_ulong address, int rw, int access_type);
  44     void (*helper_tlbwi) (void);
  45     void (*helper_tlbwr) (void);
  46     void (*helper_tlbp) (void);
  47     void (*helper_tlbr) (void);
  48     union {
  49         struct {
  50             r4k_tlb_t tlb[MIPS_TLB_MAX];
  51         } r4k;
  52     } mmu;
  53 };
  54
  55 typedef union fpr_t fpr_t;
  56 union fpr_t {
  57     float64  fd;   /* ieee double precision */
  58     float32  fs[2];/* ieee single precision */
  59     uint64_t d;    /* binary double fixed-point */
  60     uint32_t w[2]; /* binary single fixed-point */
  61 };
  62 /* define FP_ENDIAN_IDX to access the same location
  63  * in the fpr_t union regardless of the host endianess
  64  */
  65 #if defined(WORDS_BIGENDIAN)
  66 #  define FP_ENDIAN_IDX 1
  67 #else
  68 #  define FP_ENDIAN_IDX 0
  69 #endif
  70
  71 typedef struct CPUMIPSFPUContext CPUMIPSFPUContext;
  72 struct CPUMIPSFPUContext {
  73     /* Floating point registers */
  74     fpr_t fpr[32];
  75     float_status fp_status;
  76     /* fpu implementation/revision register (fir) */
  77     uint32_t fcr0;
  78 #define FCR0_F64 22
  79 #define FCR0_L 21
  80 #define FCR0_W 20
  81 #define FCR0_3D 19
  82 #define FCR0_PS 18
  83 #define FCR0_D 17
  84 #define FCR0_S 16
  85 #define FCR0_PRID 8
  86 #define FCR0_REV 0
  87     /* fcsr */
  88     uint32_t fcr31;
  89 #define SET_FP_COND(num,env)     do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  90 #define CLEAR_FP_COND(num,env)   do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  91 #define GET_FP_COND(env)         ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1))
  92 #define GET_FP_CAUSE(reg)        (((reg) >> 12) & 0x3f)
  93 #define GET_FP_ENABLE(reg)       (((reg) >>  7) & 0x1f)
  94 #define GET_FP_FLAGS(reg)        (((reg) >>  2) & 0x1f)
  95 #define SET_FP_CAUSE(reg,v)      do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0)
  96 #define SET_FP_ENABLE(reg,v)     do { (reg) = ((reg) & ~(0x1f <<  7)) | ((v & 0x1f) << 7); } while(0)
  97 #define SET_FP_FLAGS(reg,v)      do { (reg) = ((reg) & ~(0x1f <<  2)) | ((v & 0x1f) << 2); } while(0)
  98 #define UPDATE_FP_FLAGS(reg,v)   do { (reg) |= ((v & 0x1f) << 2); } while(0)
  99 #define FP_INEXACT        1
 100 #define FP_UNDERFLOW      2
 101 #define FP_OVERFLOW       4
 102 #define FP_DIV0           8
 103 #define FP_INVALID        16
 104 #define FP_UNIMPLEMENTED  32
 105 };
 106
 107 #define NB_MMU_MODES 3
 108
 109 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;
 110 struct CPUMIPSMVPContext {
 111     int32_t CP0_MVPControl;
 112 #define CP0MVPCo_CPA    3
 113 #define CP0MVPCo_STLB   2
 114 #define CP0MVPCo_VPC    1
 115 #define CP0MVPCo_EVP    0
 116     int32_t CP0_MVPConf0;
 117 #define CP0MVPC0_M      31
 118 #define CP0MVPC0_TLBS   29
 119 #define CP0MVPC0_GS     28
 120 #define CP0MVPC0_PCP    27
 121 #define CP0MVPC0_PTLBE  16
 122 #define CP0MVPC0_TCA    15
 123 #define CP0MVPC0_PVPE   10
 124 #define CP0MVPC0_PTC    0
 125     int32_t CP0_MVPConf1;
 126 #define CP0MVPC1_CIM    31
 127 #define CP0MVPC1_CIF    30
 128 #define CP0MVPC1_PCX    20
 129 #define CP0MVPC1_PCP2   10
 130 #define CP0MVPC1_PCP1   0
 131 };
 132
 133 typedef struct mips_def_t mips_def_t;
 134
 135 #define MIPS_SHADOW_SET_MAX 16
 136 #define MIPS_TC_MAX 5
 137 #define MIPS_FPU_MAX 1
 138 #define MIPS_DSP_ACC 4
 139
 140 typedef struct TCState TCState;
 141 struct TCState {
 142     target_ulong gpr[32];
 143     target_ulong PC;
 144     target_ulong HI[MIPS_DSP_ACC];
 145     target_ulong LO[MIPS_DSP_ACC];
 146     target_ulong ACX[MIPS_DSP_ACC];
 147     target_ulong DSPControl;
 148     int32_t CP0_TCStatus;
 149 #define CP0TCSt_TCU3    31
 150 #define CP0TCSt_TCU2    30
 151 #define CP0TCSt_TCU1    29
 152 #define CP0TCSt_TCU0    28
 153 #define CP0TCSt_TMX     27
 154 #define CP0TCSt_RNST    23
 155 #define CP0TCSt_TDS     21
 156 #define CP0TCSt_DT      20
 157 #define CP0TCSt_DA      15
 158 #define CP0TCSt_A       13
 159 #define CP0TCSt_TKSU    11
 160 #define CP0TCSt_IXMT    10
 161 #define CP0TCSt_TASID   0
 162     int32_t CP0_TCBind;
 163 #define CP0TCBd_CurTC   21
 164 #define CP0TCBd_TBE     17
 165 #define CP0TCBd_CurVPE  0
 166     target_ulong CP0_TCHalt;
 167     target_ulong CP0_TCContext;
 168     target_ulong CP0_TCSchedule;
 169     target_ulong CP0_TCScheFBack;
 170     int32_t CP0_Debug_tcstatus;
 171 };
 172
 173 typedef struct CPUMIPSState CPUMIPSState;
 174 struct CPUMIPSState {
 175     TCState active_tc;
 176     CPUMIPSFPUContext active_fpu;
 177
 178     CPUMIPSMVPContext *mvp;
 179     CPUMIPSTLBContext *tlb;
 180     uint32_t current_tc;
 181     uint32_t current_fpu;
 182
 183     uint32_t SEGBITS;
 184     uint32_t PABITS;
 185     target_ulong SEGMask;
 186     target_ulong PAMask;
 187
 188     int32_t CP0_Index;
 189     /* CP0_MVP* are per MVP registers. */
 190     int32_t CP0_Random;
 191     int32_t CP0_VPEControl;
 192 #define CP0VPECo_YSI    21
 193 #define CP0VPECo_GSI    20
 194 #define CP0VPECo_EXCPT  16
 195 #define CP0VPECo_TE     15
 196 #define CP0VPECo_TargTC 0
 197     int32_t CP0_VPEConf0;
 198 #define CP0VPEC0_M      31
 199 #define CP0VPEC0_XTC    21
 200 #define CP0VPEC0_TCS    19
 201 #define CP0VPEC0_SCS    18
 202 #define CP0VPEC0_DSC    17
 203 #define CP0VPEC0_ICS    16
 204 #define CP0VPEC0_MVP    1
 205 #define CP0VPEC0_VPA    0
 206     int32_t CP0_VPEConf1;
 207 #define CP0VPEC1_NCX    20
 208 #define CP0VPEC1_NCP2   10
 209 #define CP0VPEC1_NCP1   0
 210     target_ulong CP0_YQMask;
 211     target_ulong CP0_VPESchedule;
 212     target_ulong CP0_VPEScheFBack;
 213     int32_t CP0_VPEOpt;
 214 #define CP0VPEOpt_IWX7  15
 215 #define CP0VPEOpt_IWX6  14
 216 #define CP0VPEOpt_IWX5  13
 217 #define CP0VPEOpt_IWX4  12
 218 #define CP0VPEOpt_IWX3  11
 219 #define CP0VPEOpt_IWX2  10
 220 #define CP0VPEOpt_IWX1  9
 221 #define CP0VPEOpt_IWX0  8
 222 #define CP0VPEOpt_DWX7  7
 223 #define CP0VPEOpt_DWX6  6
 224 #define CP0VPEOpt_DWX5  5
 225 #define CP0VPEOpt_DWX4  4
 226 #define CP0VPEOpt_DWX3  3
 227 #define CP0VPEOpt_DWX2  2
 228 #define CP0VPEOpt_DWX1  1
 229 #define CP0VPEOpt_DWX0  0
 230     target_ulong CP0_EntryLo0;
 231     target_ulong CP0_EntryLo1;
 232     target_ulong CP0_Context;
 233     int32_t CP0_PageMask;
 234     int32_t CP0_PageGrain;
 235     int32_t CP0_Wired;
 236     int32_t CP0_SRSConf0_rw_bitmask;
 237     int32_t CP0_SRSConf0;
 238 #define CP0SRSC0_M      31
 239 #define CP0SRSC0_SRS3   20
 240 #define CP0SRSC0_SRS2   10
 241 #define CP0SRSC0_SRS1   0
 242     int32_t CP0_SRSConf1_rw_bitmask;
 243     int32_t CP0_SRSConf1;
 244 #define CP0SRSC1_M      31
 245 #define CP0SRSC1_SRS6   20
 246 #define CP0SRSC1_SRS5   10
 247 #define CP0SRSC1_SRS4   0
 248     int32_t CP0_SRSConf2_rw_bitmask;
 249     int32_t CP0_SRSConf2;
 250 #define CP0SRSC2_M      31
 251 #define CP0SRSC2_SRS9   20
 252 #define CP0SRSC2_SRS8   10
 253 #define CP0SRSC2_SRS7   0
 254     int32_t CP0_SRSConf3_rw_bitmask;
 255     int32_t CP0_SRSConf3;
 256 #define CP0SRSC3_M      31
 257 #define CP0SRSC3_SRS12  20
 258 #define CP0SRSC3_SRS11  10
 259 #define CP0SRSC3_SRS10  0
 260     int32_t CP0_SRSConf4_rw_bitmask;
 261     int32_t CP0_SRSConf4;
 262 #define CP0SRSC4_SRS15  20
 263 #define CP0SRSC4_SRS14  10
 264 #define CP0SRSC4_SRS13  0
 265     int32_t CP0_HWREna;
 266     target_ulong CP0_BadVAddr;
 267     int32_t CP0_Count;
 268     target_ulong CP0_EntryHi;
 269     int32_t CP0_Compare;
 270     int32_t CP0_Status;
 271 #define CP0St_CU3   31
 272 #define CP0St_CU2   30
 273 #define CP0St_CU1   29
 274 #define CP0St_CU0   28
 275 #define CP0St_RP    27
 276 #define CP0St_FR    26
 277 #define CP0St_RE    25
 278 #define CP0St_MX    24
 279 #define CP0St_PX    23
 280 #define CP0St_BEV   22
 281 #define CP0St_TS    21
 282 #define CP0St_SR    20
 283 #define CP0St_NMI   19
 284 #define CP0St_IM    8
 285 #define CP0St_KX    7
 286 #define CP0St_SX    6
 287 #define CP0St_UX    5
 288 #define CP0St_KSU   3
 289 #define CP0St_ERL   2
 290 #define CP0St_EXL   1
 291 #define CP0St_IE    0
 292     int32_t CP0_IntCtl;
 293 #define CP0IntCtl_IPTI 29
 294 #define CP0IntCtl_IPPC1 26
 295 #define CP0IntCtl_VS 5
 296     int32_t CP0_SRSCtl;
 297 #define CP0SRSCtl_HSS 26
 298 #define CP0SRSCtl_EICSS 18
 299 #define CP0SRSCtl_ESS 12
 300 #define CP0SRSCtl_PSS 6
 301 #define CP0SRSCtl_CSS 0
 302     int32_t CP0_SRSMap;
 303 #define CP0SRSMap_SSV7 28
 304 #define CP0SRSMap_SSV6 24
 305 #define CP0SRSMap_SSV5 20
 306 #define CP0SRSMap_SSV4 16
 307 #define CP0SRSMap_SSV3 12
 308 #define CP0SRSMap_SSV2 8
 309 #define CP0SRSMap_SSV1 4
 310 #define CP0SRSMap_SSV0 0
 311     int32_t CP0_Cause;
 312 #define CP0Ca_BD   31
 313 #define CP0Ca_TI   30
 314 #define CP0Ca_CE   28
 315 #define CP0Ca_DC   27
 316 #define CP0Ca_PCI  26
 317 #define CP0Ca_IV   23
 318 #define CP0Ca_WP   22
 319 #define CP0Ca_IP    8
 320 #define CP0Ca_IP_mask 0x0000FF00
 321 #define CP0Ca_EC    2
 322     target_ulong CP0_EPC;
 323     int32_t CP0_PRid;
 324     int32_t CP0_EBase;
 325     int32_t CP0_Config0;
 326 #define CP0C0_M    31
 327 #define CP0C0_K23  28
 328 #define CP0C0_KU   25
 329 #define CP0C0_MDU  20
 330 #define CP0C0_MM   17
 331 #define CP0C0_BM   16
 332 #define CP0C0_BE   15
 333 #define CP0C0_AT   13
 334 #define CP0C0_AR   10
 335 #define CP0C0_MT   7
 336 #define CP0C0_VI   3
 337 #define CP0C0_K0   0
 338     int32_t CP0_Config1;
 339 #define CP0C1_M    31
 340 #define CP0C1_MMU  25
 341 #define CP0C1_IS   22
 342 #define CP0C1_IL   19
 343 #define CP0C1_IA   16
 344 #define CP0C1_DS   13
 345 #define CP0C1_DL   10
 346 #define CP0C1_DA   7
 347 #define CP0C1_C2   6
 348 #define CP0C1_MD   5
 349 #define CP0C1_PC   4
 350 #define CP0C1_WR   3
 351 #define CP0C1_CA   2
 352 #define CP0C1_EP   1
 353 #define CP0C1_FP   0
 354     int32_t CP0_Config2;
 355 #define CP0C2_M    31
 356 #define CP0C2_TU   28
 357 #define CP0C2_TS   24
 358 #define CP0C2_TL   20
 359 #define CP0C2_TA   16
 360 #define CP0C2_SU   12
 361 #define CP0C2_SS   8
 362 #define CP0C2_SL   4
 363 #define CP0C2_SA   0
 364     int32_t CP0_Config3;
 365 #define CP0C3_M    31
 366 #define CP0C3_DSPP 10
 367 #define CP0C3_LPA  7
 368 #define CP0C3_VEIC 6
 369 #define CP0C3_VInt 5
 370 #define CP0C3_SP   4
 371 #define CP0C3_MT   2
 372 #define CP0C3_SM   1
 373 #define CP0C3_TL   0
 374     int32_t CP0_Config6;
 375     int32_t CP0_Config7;
 376     /* XXX: Maybe make LLAddr per-TC? */
 377     target_ulong CP0_LLAddr;
 378     target_ulong llval;
 379     target_ulong llnewval;
 380     target_ulong llreg;
 381     target_ulong CP0_WatchLo[8];
 382     int32_t CP0_WatchHi[8];
 383     target_ulong CP0_XContext;
 384     int32_t CP0_Framemask;
 385     int32_t CP0_Debug;
 386 #define CP0DB_DBD  31
 387 #define CP0DB_DM   30
 388 #define CP0DB_LSNM 28
 389 #define CP0DB_Doze 27
 390 #define CP0DB_Halt 26
 391 #define CP0DB_CNT  25
 392 #define CP0DB_IBEP 24
 393 #define CP0DB_DBEP 21
 394 #define CP0DB_IEXI 20
 395 #define CP0DB_VER  15
 396 #define CP0DB_DEC  10
 397 #define CP0DB_SSt  8
 398 #define CP0DB_DINT 5
 399 #define CP0DB_DIB  4
 400 #define CP0DB_DDBS 3
 401 #define CP0DB_DDBL 2
 402 #define CP0DB_DBp  1
 403 #define CP0DB_DSS  0
 404     target_ulong CP0_DEPC;
 405     int32_t CP0_Performance0;
 406     int32_t CP0_TagLo;
 407     int32_t CP0_DataLo;
 408     int32_t CP0_TagHi;
 409     int32_t CP0_DataHi;
 410     target_ulong CP0_ErrorEPC;
 411     int32_t CP0_DESAVE;
 412     /* We waste some space so we can handle shadow registers like TCs. */
 413     TCState tcs[MIPS_SHADOW_SET_MAX];
 414     CPUMIPSFPUContext fpus[MIPS_FPU_MAX];
 415     /* Qemu */
 416     int error_code;
 417     uint32_t hflags;    /* CPU State */
 418     /* TMASK defines different execution modes */
 419 #define MIPS_HFLAG_TMASK  0x03FF
 420 #define MIPS_HFLAG_MODE   0x0007 /* execution modes                    */
 421     /* The KSU flags must be the lowest bits in hflags. The flag order
 422        must be the same as defined for CP0 Status. This allows to use
 423        the bits as the value of mmu_idx. */
 424 #define MIPS_HFLAG_KSU    0x0003 /* kernel/supervisor/user mode mask   */
 425 #define MIPS_HFLAG_UM       0x0002 /* user mode flag */
 426 #define MIPS_HFLAG_SM       0x0001 /* supervisor mode flag */
 427 #define MIPS_HFLAG_KM       0x0000 /* kernel mode flag */
 428 #define MIPS_HFLAG_DM     0x0004 /* Debug mode                         */
 429 #define MIPS_HFLAG_64     0x0008 /* 64-bit instructions enabled        */
 430 #define MIPS_HFLAG_CP0    0x0010 /* CP0 enabled                        */
 431 #define MIPS_HFLAG_FPU    0x0020 /* FPU enabled                        */
 432 #define MIPS_HFLAG_F64    0x0040 /* 64-bit FPU enabled                 */
 433     /* True if the MIPS IV COP1X instructions can be used.  This also
 434        controls the non-COP1X instructions RECIP.S, RECIP.D, RSQRT.S
 435        and RSQRT.D.  */
 436 #define MIPS_HFLAG_COP1X  0x0080 /* COP1X instructions enabled         */
 437 #define MIPS_HFLAG_RE     0x0100 /* Reversed endianness                */
 438 #define MIPS_HFLAG_UX     0x0200 /* 64-bit user mode                   */
 439     /* If translation is interrupted between the branch instruction and
 440      * the delay slot, record what type of branch it is so that we can
 441      * resume translation properly.  It might be possible to reduce
 442      * this from three bits to two.  */
 443 #define MIPS_HFLAG_BMASK  0x1C00
 444 #define MIPS_HFLAG_B      0x0400 /* Unconditional branch               */
 445 #define MIPS_HFLAG_BC     0x0800 /* Conditional branch                 */
 446 #define MIPS_HFLAG_BL     0x0C00 /* Likely branch                      */
 447 #define MIPS_HFLAG_BR     0x1000 /* branch to register (can't link TB) */
 448     target_ulong btarget;        /* Jump / branch target               */
 449     target_ulong bcond;          /* Branch condition (if needed)       */
 450
 451     int SYNCI_Step; /* Address step size for SYNCI */
 452     int CCRes; /* Cycle count resolution/divisor */
 453     uint32_t CP0_Status_rw_bitmask; /* Read/write bits in CP0_Status */
 454     uint32_t CP0_TCStatus_rw_bitmask; /* Read/write bits in CP0_TCStatus */
 455     int insn_flags; /* Supported instruction set */
 456
 457     target_ulong tls_value; /* For usermode emulation */
 458
 459     CPU_COMMON
 460
 461     const mips_def_t *cpu_model;
 462     void *irq[8];
 463     struct QEMUTimer *timer; /* Internal timer */
 464 };
 465
 466 int no_mmu_map_address (CPUMIPSState *env, target_ulong *physical, int *prot,
 467                         target_ulong address, int rw, int access_type);
 468 int fixed_mmu_map_address (CPUMIPSState *env, target_ulong *physical, int *prot,
 469                            target_ulong address, int rw, int access_type);
 470 int r4k_map_address (CPUMIPSState *env, target_ulong *physical, int *prot,
 471                      target_ulong address, int rw, int access_type);
 472 void r4k_helper_tlbwi (void);
 473 void r4k_helper_tlbwr (void);
 474 void r4k_helper_tlbp (void);
 475 void r4k_helper_tlbr (void);
 476 void mips_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
 477
 478 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
 479                           int unused, int size);
 480
 481 #define cpu_init cpu_mips_init
 482 #define cpu_exec cpu_mips_exec
 483 #define cpu_gen_code cpu_mips_gen_code
 484 #define cpu_signal_handler cpu_mips_signal_handler
 485 #define cpu_list mips_cpu_list
 486
 487 #define CPU_SAVE_VERSION 3
 488
 489 /* MMU modes definitions. We carefully match the indices with our
 490    hflags layout. */
 491 #define MMU_MODE0_SUFFIX _kernel
 492 #define MMU_MODE1_SUFFIX _super
 493 #define MMU_MODE2_SUFFIX _user
 494 #define MMU_USER_IDX 2
 495 static inline int cpu_mmu_index (CPUState *env)
 496 {
 497     return env->hflags & MIPS_HFLAG_KSU;
 498 }
 499
 500 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 501 {
 502     if (newsp)
 503         env->active_tc.gpr[29] = newsp;
 504     env->active_tc.gpr[7] = 0;
 505     env->active_tc.gpr[2] = 0;
 506 }
 507
 508 #include "cpu-all.h"
 509 #include "exec-all.h"
 510
 511 /* Memory access type :
 512  * may be needed for precise access rights control and precise exceptions.
 513  */
 514 enum {
 515     /* 1 bit to define user level / supervisor access */
 516     ACCESS_USER  = 0x00,
 517     ACCESS_SUPER = 0x01,
 518     /* 1 bit to indicate direction */
 519     ACCESS_STORE = 0x02,
 520     /* Type of instruction that generated the access */
 521     ACCESS_CODE  = 0x10, /* Code fetch access                */
 522     ACCESS_INT   = 0x20, /* Integer load/store access        */
 523     ACCESS_FLOAT = 0x30, /* floating point load/store access */
 524 };
 525
 526 /* Exceptions */
 527 enum {
 528     EXCP_NONE          = -1,
 529     EXCP_RESET         = 0,
 530     EXCP_SRESET,
 531     EXCP_DSS,
 532     EXCP_DINT,
 533     EXCP_DDBL,
 534     EXCP_DDBS,
 535     EXCP_NMI,
 536     EXCP_MCHECK,
 537     EXCP_EXT_INTERRUPT, /* 8 */
 538     EXCP_DFWATCH,
 539     EXCP_DIB,
 540     EXCP_IWATCH,
 541     EXCP_AdEL,
 542     EXCP_AdES,
 543     EXCP_TLBF,
 544     EXCP_IBE,
 545     EXCP_DBp, /* 16 */
 546     EXCP_SYSCALL,
 547     EXCP_BREAK,
 548     EXCP_CpU,
 549     EXCP_RI,
 550     EXCP_OVERFLOW,
 551     EXCP_TRAP,
 552     EXCP_FPE,
 553     EXCP_DWATCH, /* 24 */
 554     EXCP_LTLBL,
 555     EXCP_TLBL,
 556     EXCP_TLBS,
 557     EXCP_DBE,
 558     EXCP_THREAD,
 559     EXCP_MDMX,
 560     EXCP_C2E,
 561     EXCP_CACHE, /* 32 */
 562
 563     EXCP_LAST = EXCP_CACHE,
 564 };
 565 /* Dummy exception for conditional stores.  */
 566 #define EXCP_SC 0x100
 567
 568 int cpu_mips_exec(CPUMIPSState *s);
 569 CPUMIPSState *cpu_mips_init(const char *cpu_model);
 570 //~ uint32_t cpu_mips_get_clock (void);
 571 int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
 572
 573 /* mips_timer.c */
 574 uint32_t cpu_mips_get_random (CPUState *env);
 575 uint32_t cpu_mips_get_count (CPUState *env);
 576 void cpu_mips_store_count (CPUState *env, uint32_t value);
 577 void cpu_mips_store_compare (CPUState *env, uint32_t value);
 578 void cpu_mips_start_count(CPUState *env);
 579 void cpu_mips_stop_count(CPUState *env);
 580
 581 /* mips_int.c */
 582 void cpu_mips_update_irq (CPUState *env);
 583
 584 /* helper.c */
 585 int cpu_mips_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
 586                                int mmu_idx, int is_softmmu);
 587 void do_interrupt (CPUState *env);
 588 void r4k_invalidate_tlb (CPUState *env, int idx, int use_extra);
 589
 590 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
 591 {
 592     env->active_tc.PC = tb->pc;
 593     env->hflags &= ~MIPS_HFLAG_BMASK;
 594     env->hflags |= tb->flags & MIPS_HFLAG_BMASK;
 595 }
 596
 597 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 598                                         target_ulong *cs_base, int *flags)
 599 {
 600     *pc = env->active_tc.PC;
 601     *cs_base = 0;
 602     *flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK);
 603 }
 604
 605 static inline void cpu_set_tls(CPUState *env, target_ulong newtls)
 606 {
 607     env->tls_value = newtls;
 608 }
 609
 610 #endif /* !defined (__MIPS_CPU_H__) */