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 #include "config.h"
   9 #include "mips-defs.h"
  10 #include "cpu-defs.h"
  11 #include "softfloat.h"
  12
  13 // uint_fast8_t and uint_fast16_t not in <sys/int_types.h>
  14 // XXX: move that elsewhere
  15 #if defined(HOST_SOLARIS) && HOST_SOLARIS < 10
  16 typedef unsigned char           uint_fast8_t;
  17 typedef unsigned int            uint_fast16_t;
  18 #endif
  19
  20 struct CPUMIPSState;
  21
  22 typedef struct r4k_tlb_t r4k_tlb_t;
  23 struct r4k_tlb_t {
  24     target_ulong VPN;
  25     uint32_t PageMask;
  26     uint_fast8_t ASID;
  27     uint_fast16_t G:1;
  28     uint_fast16_t C0:3;
  29     uint_fast16_t C1:3;
  30     uint_fast16_t V0:1;
  31     uint_fast16_t V1:1;
  32     uint_fast16_t D0:1;
  33     uint_fast16_t D1:1;
  34     target_ulong PFN[2];
  35 };
  36
  37 typedef struct CPUMIPSTLBContext CPUMIPSTLBContext;
  38 struct CPUMIPSTLBContext {
  39     uint32_t nb_tlb;
  40     uint32_t tlb_in_use;
  41     int (*map_address) (struct CPUMIPSState *env, target_ulong *physical, int *prot, target_ulong address, int rw, int access_type);
  42     void (*do_tlbwi) (void);
  43     void (*do_tlbwr) (void);
  44     void (*do_tlbp) (void);
  45     void (*do_tlbr) (void);
  46     union {
  47         struct {
  48             r4k_tlb_t tlb[MIPS_TLB_MAX];
  49         } r4k;
  50     } mmu;
  51 };
  52
  53 typedef union fpr_t fpr_t;
  54 union fpr_t {
  55     float64  fd;   /* ieee double precision */
  56     float32  fs[2];/* ieee single precision */
  57     uint64_t d;    /* binary double fixed-point */
  58     uint32_t w[2]; /* binary single fixed-point */
  59 };
  60 /* define FP_ENDIAN_IDX to access the same location
  61  * in the fpr_t union regardless of the host endianess
  62  */
  63 #if defined(WORDS_BIGENDIAN)
  64 #  define FP_ENDIAN_IDX 1
  65 #else
  66 #  define FP_ENDIAN_IDX 0
  67 #endif
  68
  69 typedef struct CPUMIPSFPUContext CPUMIPSFPUContext;
  70 struct CPUMIPSFPUContext {
  71     /* Floating point registers */
  72     fpr_t fpr[32];
  73 #ifndef USE_HOST_FLOAT_REGS
  74     fpr_t ft0;
  75     fpr_t ft1;
  76     fpr_t ft2;
  77 #endif
  78     float_status fp_status;
  79     /* fpu implementation/revision register (fir) */
  80     uint32_t fcr0;
  81 #define FCR0_F64 22
  82 #define FCR0_L 21
  83 #define FCR0_W 20
  84 #define FCR0_3D 19
  85 #define FCR0_PS 18
  86 #define FCR0_D 17
  87 #define FCR0_S 16
  88 #define FCR0_PRID 8
  89 #define FCR0_REV 0
  90     /* fcsr */
  91     uint32_t fcr31;
  92 #define SET_FP_COND(num,env)     do { ((env)->fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  93 #define CLEAR_FP_COND(num,env)   do { ((env)->fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  94 #define GET_FP_COND(env)         ((((env)->fcr31 >> 24) & 0xfe) | (((env)->fcr31 >> 23) & 0x1))
  95 #define GET_FP_CAUSE(reg)        (((reg) >> 12) & 0x3f)
  96 #define GET_FP_ENABLE(reg)       (((reg) >>  7) & 0x1f)
  97 #define GET_FP_FLAGS(reg)        (((reg) >>  2) & 0x1f)
  98 #define SET_FP_CAUSE(reg,v)      do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0)
  99 #define SET_FP_ENABLE(reg,v)     do { (reg) = ((reg) & ~(0x1f <<  7)) | ((v & 0x1f) << 7); } while(0)
 100 #define SET_FP_FLAGS(reg,v)      do { (reg) = ((reg) & ~(0x1f <<  2)) | ((v & 0x1f) << 2); } while(0)
 101 #define UPDATE_FP_FLAGS(reg,v)   do { (reg) |= ((v & 0x1f) << 2); } while(0)
 102 #define FP_INEXACT        1
 103 #define FP_UNDERFLOW      2
 104 #define FP_OVERFLOW       4
 105 #define FP_DIV0           8
 106 #define FP_INVALID        16
 107 #define FP_UNIMPLEMENTED  32
 108 };
 109
 110 #define NB_MMU_MODES 3
 111
 112 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;
 113 struct CPUMIPSMVPContext {
 114     int32_t CP0_MVPControl;
 115 #define CP0MVPCo_CPA    3
 116 #define CP0MVPCo_STLB   2
 117 #define CP0MVPCo_VPC    1
 118 #define CP0MVPCo_EVP    0
 119     int32_t CP0_MVPConf0;
 120 #define CP0MVPC0_M      31
 121 #define CP0MVPC0_TLBS   29
 122 #define CP0MVPC0_GS     28
 123 #define CP0MVPC0_PCP    27
 124 #define CP0MVPC0_PTLBE  16
 125 #define CP0MVPC0_TCA    15
 126 #define CP0MVPC0_PVPE   10
 127 #define CP0MVPC0_PTC    0
 128     int32_t CP0_MVPConf1;
 129 #define CP0MVPC1_CIM    31
 130 #define CP0MVPC1_CIF    30
 131 #define CP0MVPC1_PCX    20
 132 #define CP0MVPC1_PCP2   10
 133 #define CP0MVPC1_PCP1   0
 134 };
 135
 136 typedef struct mips_def_t mips_def_t;
 137
 138 #define MIPS_SHADOW_SET_MAX 16
 139 #define MIPS_TC_MAX 5
 140 #define MIPS_DSP_ACC 4
 141
 142 typedef struct CPUMIPSState CPUMIPSState;
 143 struct CPUMIPSState {
 144     /* General integer registers */
 145     target_ulong gpr[MIPS_SHADOW_SET_MAX][32];
 146     /* Special registers */
 147     target_ulong PC[MIPS_TC_MAX];
 148 #if TARGET_LONG_BITS > HOST_LONG_BITS
 149     target_ulong t0;
 150     target_ulong t1;
 151 #endif
 152     target_ulong HI[MIPS_TC_MAX][MIPS_DSP_ACC];
 153     target_ulong LO[MIPS_TC_MAX][MIPS_DSP_ACC];
 154     target_ulong ACX[MIPS_TC_MAX][MIPS_DSP_ACC];
 155     target_ulong DSPControl[MIPS_TC_MAX];
 156
 157     CPUMIPSMVPContext *mvp;
 158     CPUMIPSTLBContext *tlb;
 159     CPUMIPSFPUContext *fpu;
 160     uint32_t current_tc;
 161     target_ulong *current_tc_gprs;
 162     target_ulong *current_tc_hi;
 163
 164     uint32_t SEGBITS;
 165     target_ulong SEGMask;
 166     uint32_t PABITS;
 167     target_ulong PAMask;
 168
 169     int32_t CP0_Index;
 170     /* CP0_MVP* are per MVP registers. */
 171     int32_t CP0_Random;
 172     int32_t CP0_VPEControl;
 173 #define CP0VPECo_YSI    21
 174 #define CP0VPECo_GSI    20
 175 #define CP0VPECo_EXCPT  16
 176 #define CP0VPECo_TE     15
 177 #define CP0VPECo_TargTC 0
 178     int32_t CP0_VPEConf0;
 179 #define CP0VPEC0_M      31
 180 #define CP0VPEC0_XTC    21
 181 #define CP0VPEC0_TCS    19
 182 #define CP0VPEC0_SCS    18
 183 #define CP0VPEC0_DSC    17
 184 #define CP0VPEC0_ICS    16
 185 #define CP0VPEC0_MVP    1
 186 #define CP0VPEC0_VPA    0
 187     int32_t CP0_VPEConf1;
 188 #define CP0VPEC1_NCX    20
 189 #define CP0VPEC1_NCP2   10
 190 #define CP0VPEC1_NCP1   0
 191     target_ulong CP0_YQMask;
 192     target_ulong CP0_VPESchedule;
 193     target_ulong CP0_VPEScheFBack;
 194     int32_t CP0_VPEOpt;
 195 #define CP0VPEOpt_IWX7  15
 196 #define CP0VPEOpt_IWX6  14
 197 #define CP0VPEOpt_IWX5  13
 198 #define CP0VPEOpt_IWX4  12
 199 #define CP0VPEOpt_IWX3  11
 200 #define CP0VPEOpt_IWX2  10
 201 #define CP0VPEOpt_IWX1  9
 202 #define CP0VPEOpt_IWX0  8
 203 #define CP0VPEOpt_DWX7  7
 204 #define CP0VPEOpt_DWX6  6
 205 #define CP0VPEOpt_DWX5  5
 206 #define CP0VPEOpt_DWX4  4
 207 #define CP0VPEOpt_DWX3  3
 208 #define CP0VPEOpt_DWX2  2
 209 #define CP0VPEOpt_DWX1  1
 210 #define CP0VPEOpt_DWX0  0
 211     target_ulong CP0_EntryLo0;
 212     int32_t CP0_TCStatus[MIPS_TC_MAX];
 213 #define CP0TCSt_TCU3    31
 214 #define CP0TCSt_TCU2    30
 215 #define CP0TCSt_TCU1    29
 216 #define CP0TCSt_TCU0    28
 217 #define CP0TCSt_TMX     27
 218 #define CP0TCSt_RNST    23
 219 #define CP0TCSt_TDS     21
 220 #define CP0TCSt_DT      20
 221 #define CP0TCSt_DA      15
 222 #define CP0TCSt_A       13
 223 #define CP0TCSt_TKSU    11
 224 #define CP0TCSt_IXMT    10
 225 #define CP0TCSt_TASID   0
 226     int32_t CP0_TCBind[MIPS_TC_MAX];
 227 #define CP0TCBd_CurTC   21
 228 #define CP0TCBd_TBE     17
 229 #define CP0TCBd_CurVPE  0
 230     target_ulong CP0_TCHalt[MIPS_TC_MAX];
 231     target_ulong CP0_TCContext[MIPS_TC_MAX];
 232     target_ulong CP0_TCSchedule[MIPS_TC_MAX];
 233     target_ulong CP0_TCScheFBack[MIPS_TC_MAX];
 234     target_ulong CP0_EntryLo1;
 235     target_ulong CP0_Context;
 236     int32_t CP0_PageMask;
 237     int32_t CP0_PageGrain;
 238     int32_t CP0_Wired;
 239     int32_t CP0_SRSConf0_rw_bitmask;
 240     int32_t CP0_SRSConf0;
 241 #define CP0SRSC0_M      31
 242 #define CP0SRSC0_SRS3   20
 243 #define CP0SRSC0_SRS2   10
 244 #define CP0SRSC0_SRS1   0
 245     int32_t CP0_SRSConf1_rw_bitmask;
 246     int32_t CP0_SRSConf1;
 247 #define CP0SRSC1_M      31
 248 #define CP0SRSC1_SRS6   20
 249 #define CP0SRSC1_SRS5   10
 250 #define CP0SRSC1_SRS4   0
 251     int32_t CP0_SRSConf2_rw_bitmask;
 252     int32_t CP0_SRSConf2;
 253 #define CP0SRSC2_M      31
 254 #define CP0SRSC2_SRS9   20
 255 #define CP0SRSC2_SRS8   10
 256 #define CP0SRSC2_SRS7   0
 257     int32_t CP0_SRSConf3_rw_bitmask;
 258     int32_t CP0_SRSConf3;
 259 #define CP0SRSC3_M      31
 260 #define CP0SRSC3_SRS12  20
 261 #define CP0SRSC3_SRS11  10
 262 #define CP0SRSC3_SRS10  0
 263     int32_t CP0_SRSConf4_rw_bitmask;
 264     int32_t CP0_SRSConf4;
 265 #define CP0SRSC4_SRS15  20
 266 #define CP0SRSC4_SRS14  10
 267 #define CP0SRSC4_SRS13  0
 268     int32_t CP0_HWREna;
 269     target_ulong CP0_BadVAddr;
 270     int32_t CP0_Count;
 271     target_ulong CP0_EntryHi;
 272     int32_t CP0_Compare;
 273     int32_t CP0_Status;
 274 #define CP0St_CU3   31
 275 #define CP0St_CU2   30
 276 #define CP0St_CU1   29
 277 #define CP0St_CU0   28
 278 #define CP0St_RP    27
 279 #define CP0St_FR    26
 280 #define CP0St_RE    25
 281 #define CP0St_MX    24
 282 #define CP0St_PX    23
 283 #define CP0St_BEV   22
 284 #define CP0St_TS    21
 285 #define CP0St_SR    20
 286 #define CP0St_NMI   19
 287 #define CP0St_IM    8
 288 #define CP0St_KX    7
 289 #define CP0St_SX    6
 290 #define CP0St_UX    5
 291 #define CP0St_KSU   3
 292 #define CP0St_ERL   2
 293 #define CP0St_EXL   1
 294 #define CP0St_IE    0
 295     int32_t CP0_IntCtl;
 296 #define CP0IntCtl_IPTI 29
 297 #define CP0IntCtl_IPPC1 26
 298 #define CP0IntCtl_VS 5
 299     int32_t CP0_SRSCtl;
 300 #define CP0SRSCtl_HSS 26
 301 #define CP0SRSCtl_EICSS 18
 302 #define CP0SRSCtl_ESS 12
 303 #define CP0SRSCtl_PSS 6
 304 #define CP0SRSCtl_CSS 0
 305     int32_t CP0_SRSMap;
 306 #define CP0SRSMap_SSV7 28
 307 #define CP0SRSMap_SSV6 24
 308 #define CP0SRSMap_SSV5 20
 309 #define CP0SRSMap_SSV4 16
 310 #define CP0SRSMap_SSV3 12
 311 #define CP0SRSMap_SSV2 8
 312 #define CP0SRSMap_SSV1 4
 313 #define CP0SRSMap_SSV0 0
 314     int32_t CP0_Cause;
 315 #define CP0Ca_BD   31
 316 #define CP0Ca_TI   30
 317 #define CP0Ca_CE   28
 318 #define CP0Ca_DC   27
 319 #define CP0Ca_PCI  26
 320 #define CP0Ca_IV   23
 321 #define CP0Ca_WP   22
 322 #define CP0Ca_IP    8
 323 #define CP0Ca_IP_mask 0x0000FF00
 324 #define CP0Ca_EC    2
 325     target_ulong CP0_EPC;
 326     int32_t CP0_PRid;
 327     int32_t CP0_EBase;
 328     int32_t CP0_Config0;
 329 #define CP0C0_M    31
 330 #define CP0C0_K23  28
 331 #define CP0C0_KU   25
 332 #define CP0C0_MDU  20
 333 #define CP0C0_MM   17
 334 #define CP0C0_BM   16
 335 #define CP0C0_BE   15
 336 #define CP0C0_AT   13
 337 #define CP0C0_AR   10
 338 #define CP0C0_MT   7
 339 #define CP0C0_VI   3
 340 #define CP0C0_K0   0
 341     int32_t CP0_Config1;
 342 #define CP0C1_M    31
 343 #define CP0C1_MMU  25
 344 #define CP0C1_IS   22
 345 #define CP0C1_IL   19
 346 #define CP0C1_IA   16
 347 #define CP0C1_DS   13
 348 #define CP0C1_DL   10
 349 #define CP0C1_DA   7
 350 #define CP0C1_C2   6
 351 #define CP0C1_MD   5
 352 #define CP0C1_PC   4
 353 #define CP0C1_WR   3
 354 #define CP0C1_CA   2
 355 #define CP0C1_EP   1
 356 #define CP0C1_FP   0
 357     int32_t CP0_Config2;
 358 #define CP0C2_M    31
 359 #define CP0C2_TU   28
 360 #define CP0C2_TS   24
 361 #define CP0C2_TL   20
 362 #define CP0C2_TA   16
 363 #define CP0C2_SU   12
 364 #define CP0C2_SS   8
 365 #define CP0C2_SL   4
 366 #define CP0C2_SA   0
 367     int32_t CP0_Config3;
 368 #define CP0C3_M    31
 369 #define CP0C3_DSPP 10
 370 #define CP0C3_LPA  7
 371 #define CP0C3_VEIC 6
 372 #define CP0C3_VInt 5
 373 #define CP0C3_SP   4
 374 #define CP0C3_MT   2
 375 #define CP0C3_SM   1
 376 #define CP0C3_TL   0
 377     int32_t CP0_Config6;
 378     int32_t CP0_Config7;
 379     /* XXX: Maybe make LLAddr per-TC? */
 380     target_ulong CP0_LLAddr;
 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     int32_t CP0_Debug_tcstatus[MIPS_TC_MAX];
 405     target_ulong CP0_DEPC;
 406     int32_t CP0_Performance0;
 407     int32_t CP0_TagLo;
 408     int32_t CP0_DataLo;
 409     int32_t CP0_TagHi;
 410     int32_t CP0_DataHi;
 411     target_ulong CP0_ErrorEPC;
 412     int32_t CP0_DESAVE;
 413     /* Qemu */
 414     int interrupt_request;
 415     int error_code;
 416     int user_mode_only; /* user mode only simulation */
 417     uint32_t hflags;    /* CPU State */
 418     /* TMASK defines different execution modes */
 419 #define MIPS_HFLAG_TMASK  0x01FF
 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     /* If translation is interrupted between the branch instruction and
 439      * the delay slot, record what type of branch it is so that we can
 440      * resume translation properly.  It might be possible to reduce
 441      * this from three bits to two.  */
 442 #define MIPS_HFLAG_BMASK  0x0e00
 443 #define MIPS_HFLAG_B      0x0200 /* Unconditional branch               */
 444 #define MIPS_HFLAG_BC     0x0400 /* Conditional branch                 */
 445 #define MIPS_HFLAG_BL     0x0600 /* Likely branch                      */
 446 #define MIPS_HFLAG_BR     0x0800 /* branch to register (can't link TB) */
 447     target_ulong btarget;        /* Jump / branch target               */
 448     int bcond;                   /* Branch condition (if needed)       */
 449
 450     int SYNCI_Step; /* Address step size for SYNCI */
 451     int CCRes; /* Cycle count resolution/divisor */
 452     uint32_t CP0_Status_rw_bitmask; /* Read/write bits in CP0_Status */
 453     uint32_t CP0_TCStatus_rw_bitmask; /* Read/write bits in CP0_TCStatus */
 454     int insn_flags; /* Supported instruction set */
 455
 456 #ifdef CONFIG_USER_ONLY
 457     target_ulong tls_value;
 458 #endif
 459
 460     CPU_COMMON
 461
 462     const mips_def_t *cpu_model;
 463 #ifndef CONFIG_USER_ONLY
 464     void *irq[8];
 465 #endif
 466
 467     struct QEMUTimer *timer; /* Internal timer */
 468 };
 469
 470 int no_mmu_map_address (CPUMIPSState *env, target_ulong *physical, int *prot,
 471                         target_ulong address, int rw, int access_type);
 472 int fixed_mmu_map_address (CPUMIPSState *env, target_ulong *physical, int *prot,
 473                            target_ulong address, int rw, int access_type);
 474 int r4k_map_address (CPUMIPSState *env, target_ulong *physical, int *prot,
 475                      target_ulong address, int rw, int access_type);
 476 void r4k_do_tlbwi (void);
 477 void r4k_do_tlbwr (void);
 478 void r4k_do_tlbp (void);
 479 void r4k_do_tlbr (void);
 480 void mips_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
 481
 482 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
 483                           int unused);
 484
 485 #define CPUState CPUMIPSState
 486 #define cpu_init cpu_mips_init
 487 #define cpu_exec cpu_mips_exec
 488 #define cpu_gen_code cpu_mips_gen_code
 489 #define cpu_signal_handler cpu_mips_signal_handler
 490 #define cpu_list mips_cpu_list
 491
 492 /* MMU modes definitions. We carefully match the indices with our
 493    hflags layout. */
 494 #define MMU_MODE0_SUFFIX _kernel
 495 #define MMU_MODE1_SUFFIX _super
 496 #define MMU_MODE2_SUFFIX _user
 497 #define MMU_USER_IDX 2
 498 static inline int cpu_mmu_index (CPUState *env)
 499 {
 500     return env->hflags & MIPS_HFLAG_KSU;
 501 }
 502
 503 #if defined(CONFIG_USER_ONLY)
 504 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 505 {
 506     if (newsp)
 507         env->gpr[env->current_tc][29] = newsp;
 508     env->gpr[env->current_tc][7] = 0;
 509     env->gpr[env->current_tc][2] = 0;
 510 }
 511 #endif
 512
 513 #include "cpu-all.h"
 514
 515 /* Memory access type :
 516  * may be needed for precise access rights control and precise exceptions.
 517  */
 518 enum {
 519     /* 1 bit to define user level / supervisor access */
 520     ACCESS_USER  = 0x00,
 521     ACCESS_SUPER = 0x01,
 522     /* 1 bit to indicate direction */
 523     ACCESS_STORE = 0x02,
 524     /* Type of instruction that generated the access */
 525     ACCESS_CODE  = 0x10, /* Code fetch access                */
 526     ACCESS_INT   = 0x20, /* Integer load/store access        */
 527     ACCESS_FLOAT = 0x30, /* floating point load/store access */
 528 };
 529
 530 /* Exceptions */
 531 enum {
 532     EXCP_NONE          = -1,
 533     EXCP_RESET         = 0,
 534     EXCP_SRESET,
 535     EXCP_DSS,
 536     EXCP_DINT,
 537     EXCP_DDBL,
 538     EXCP_DDBS,
 539     EXCP_NMI,
 540     EXCP_MCHECK,
 541     EXCP_EXT_INTERRUPT, /* 8 */
 542     EXCP_DFWATCH,
 543     EXCP_DIB,
 544     EXCP_IWATCH,
 545     EXCP_AdEL,
 546     EXCP_AdES,
 547     EXCP_TLBF,
 548     EXCP_IBE,
 549     EXCP_DBp, /* 16 */
 550     EXCP_SYSCALL,
 551     EXCP_BREAK,
 552     EXCP_CpU,
 553     EXCP_RI,
 554     EXCP_OVERFLOW,
 555     EXCP_TRAP,
 556     EXCP_FPE,
 557     EXCP_DWATCH, /* 24 */
 558     EXCP_LTLBL,
 559     EXCP_TLBL,
 560     EXCP_TLBS,
 561     EXCP_DBE,
 562     EXCP_THREAD,
 563     EXCP_MDMX,
 564     EXCP_C2E,
 565     EXCP_CACHE, /* 32 */
 566
 567     EXCP_LAST = EXCP_CACHE,
 568 };
 569
 570 int cpu_mips_exec(CPUMIPSState *s);
 571 CPUMIPSState *cpu_mips_init(const char *cpu_model);
 572 uint32_t cpu_mips_get_clock (void);
 573 int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
 574
 575 #endif /* !defined (__MIPS_CPU_H__) */