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(CONFIG_SOLARIS) && CONFIG_SOLARIS_VERSION < 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 #if !defined(CONFIG_USER_ONLY)
  40 typedef struct CPUMIPSTLBContext CPUMIPSTLBContext;
  41 struct CPUMIPSTLBContext {
  42     uint32_t nb_tlb;
  43     uint32_t tlb_in_use;
  44     int (*map_address) (struct CPUMIPSState *env, target_phys_addr_t *physical, int *prot, target_ulong address, int rw, int access_type);
  45     void (*helper_tlbwi) (void);
  46     void (*helper_tlbwr) (void);
  47     void (*helper_tlbp) (void);
  48     void (*helper_tlbr) (void);
  49     union {
  50         struct {
  51             r4k_tlb_t tlb[MIPS_TLB_MAX];
  52         } r4k;
  53     } mmu;
  54 };
  55 #endif
  56
  57 typedef union fpr_t fpr_t;
  58 union fpr_t {
  59     float64  fd;   /* ieee double precision */
  60     float32  fs[2];/* ieee single precision */
  61     uint64_t d;    /* binary double fixed-point */
  62     uint32_t w[2]; /* binary single fixed-point */
  63 };
  64 /* define FP_ENDIAN_IDX to access the same location
  65  * in the fpr_t union regardless of the host endianess
  66  */
  67 #if defined(HOST_WORDS_BIGENDIAN)
  68 #  define FP_ENDIAN_IDX 1
  69 #else
  70 #  define FP_ENDIAN_IDX 0
  71 #endif
  72
  73 typedef struct CPUMIPSFPUContext CPUMIPSFPUContext;
  74 struct CPUMIPSFPUContext {
  75     /* Floating point registers */
  76     fpr_t fpr[32];
  77     float_status fp_status;
  78     /* fpu implementation/revision register (fir) */
  79     uint32_t fcr0;
  80 #define FCR0_F64 22
  81 #define FCR0_L 21
  82 #define FCR0_W 20
  83 #define FCR0_3D 19
  84 #define FCR0_PS 18
  85 #define FCR0_D 17
  86 #define FCR0_S 16
  87 #define FCR0_PRID 8
  88 #define FCR0_REV 0
  89     /* fcsr */
  90     uint32_t fcr31;
  91 #define SET_FP_COND(num,env)     do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  92 #define CLEAR_FP_COND(num,env)   do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  93 #define GET_FP_COND(env)         ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1))
  94 #define GET_FP_CAUSE(reg)        (((reg) >> 12) & 0x3f)
  95 #define GET_FP_ENABLE(reg)       (((reg) >>  7) & 0x1f)
  96 #define GET_FP_FLAGS(reg)        (((reg) >>  2) & 0x1f)
  97 #define SET_FP_CAUSE(reg,v)      do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0)
  98 #define SET_FP_ENABLE(reg,v)     do { (reg) = ((reg) & ~(0x1f <<  7)) | ((v & 0x1f) << 7); } while(0)
  99 #define SET_FP_FLAGS(reg,v)      do { (reg) = ((reg) & ~(0x1f <<  2)) | ((v & 0x1f) << 2); } while(0)
 100 #define UPDATE_FP_FLAGS(reg,v)   do { (reg) |= ((v & 0x1f) << 2); } while(0)
 101 #define FP_INEXACT        1
 102 #define FP_UNDERFLOW      2
 103 #define FP_OVERFLOW       4
 104 #define FP_DIV0           8
 105 #define FP_INVALID        16
 106 #define FP_UNIMPLEMENTED  32
 107 };
 108
 109 #define NB_MMU_MODES 3
 110
 111 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;
 112 struct CPUMIPSMVPContext {
 113     int32_t CP0_MVPControl;
 114 #define CP0MVPCo_CPA    3
 115 #define CP0MVPCo_STLB   2
 116 #define CP0MVPCo_VPC    1
 117 #define CP0MVPCo_EVP    0
 118     int32_t CP0_MVPConf0;
 119 #define CP0MVPC0_M      31
 120 #define CP0MVPC0_TLBS   29
 121 #define CP0MVPC0_GS     28
 122 #define CP0MVPC0_PCP    27
 123 #define CP0MVPC0_PTLBE  16
 124 #define CP0MVPC0_TCA    15
 125 #define CP0MVPC0_PVPE   10
 126 #define CP0MVPC0_PTC    0
 127     int32_t CP0_MVPConf1;
 128 #define CP0MVPC1_CIM    31
 129 #define CP0MVPC1_CIF    30
 130 #define CP0MVPC1_PCX    20
 131 #define CP0MVPC1_PCP2   10
 132 #define CP0MVPC1_PCP1   0
 133 };
 134
 135 typedef struct mips_def_t mips_def_t;
 136
 137 #define MIPS_SHADOW_SET_MAX 16
 138 #define MIPS_TC_MAX 5
 139 #define MIPS_FPU_MAX 1
 140 #define MIPS_DSP_ACC 4
 141
 142 typedef struct TCState TCState;
 143 struct TCState {
 144     target_ulong gpr[32];
 145     target_ulong PC;
 146     target_ulong HI[MIPS_DSP_ACC];
 147     target_ulong LO[MIPS_DSP_ACC];
 148     target_ulong ACX[MIPS_DSP_ACC];
 149     target_ulong DSPControl;
 150     int32_t CP0_TCStatus;
 151 #define CP0TCSt_TCU3    31
 152 #define CP0TCSt_TCU2    30
 153 #define CP0TCSt_TCU1    29
 154 #define CP0TCSt_TCU0    28
 155 #define CP0TCSt_TMX     27
 156 #define CP0TCSt_RNST    23
 157 #define CP0TCSt_TDS     21
 158 #define CP0TCSt_DT      20
 159 #define CP0TCSt_DA      15
 160 #define CP0TCSt_A       13
 161 #define CP0TCSt_TKSU    11
 162 #define CP0TCSt_IXMT    10
 163 #define CP0TCSt_TASID   0
 164     int32_t CP0_TCBind;
 165 #define CP0TCBd_CurTC   21
 166 #define CP0TCBd_TBE     17
 167 #define CP0TCBd_CurVPE  0
 168     target_ulong CP0_TCHalt;
 169     target_ulong CP0_TCContext;
 170     target_ulong CP0_TCSchedule;
 171     target_ulong CP0_TCScheFBack;
 172     int32_t CP0_Debug_tcstatus;
 173 };
 174
 175 typedef struct CPUMIPSState CPUMIPSState;
 176 struct CPUMIPSState {
 177     TCState active_tc;
 178     CPUMIPSFPUContext active_fpu;
 179
 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_ISA_ON_EXC 16
 367 #define CP0C3_DSPP 10
 368 #define CP0C3_LPA  7
 369 #define CP0C3_VEIC 6
 370 #define CP0C3_VInt 5
 371 #define CP0C3_SP   4
 372 #define CP0C3_MT   2
 373 #define CP0C3_SM   1
 374 #define CP0C3_TL   0
 375     int32_t CP0_Config6;
 376     int32_t CP0_Config7;
 377     /* XXX: Maybe make LLAddr per-TC? */
 378     target_ulong lladdr;
 379     target_ulong llval;
 380     target_ulong llnewval;
 381     target_ulong llreg;
 382     target_ulong CP0_LLAddr_rw_bitmask;
 383     int CP0_LLAddr_shift;
 384     target_ulong CP0_WatchLo[8];
 385     int32_t CP0_WatchHi[8];
 386     target_ulong CP0_XContext;
 387     int32_t CP0_Framemask;
 388     int32_t CP0_Debug;
 389 #define CP0DB_DBD  31
 390 #define CP0DB_DM   30
 391 #define CP0DB_LSNM 28
 392 #define CP0DB_Doze 27
 393 #define CP0DB_Halt 26
 394 #define CP0DB_CNT  25
 395 #define CP0DB_IBEP 24
 396 #define CP0DB_DBEP 21
 397 #define CP0DB_IEXI 20
 398 #define CP0DB_VER  15
 399 #define CP0DB_DEC  10
 400 #define CP0DB_SSt  8
 401 #define CP0DB_DINT 5
 402 #define CP0DB_DIB  4
 403 #define CP0DB_DDBS 3
 404 #define CP0DB_DDBL 2
 405 #define CP0DB_DBp  1
 406 #define CP0DB_DSS  0
 407     target_ulong CP0_DEPC;
 408     int32_t CP0_Performance0;
 409     int32_t CP0_TagLo;
 410     int32_t CP0_DataLo;
 411     int32_t CP0_TagHi;
 412     int32_t CP0_DataHi;
 413     target_ulong CP0_ErrorEPC;
 414     int32_t CP0_DESAVE;
 415     /* We waste some space so we can handle shadow registers like TCs. */
 416     TCState tcs[MIPS_SHADOW_SET_MAX];
 417     CPUMIPSFPUContext fpus[MIPS_FPU_MAX];
 418     /* Qemu */
 419     int error_code;
 420     uint32_t hflags;    /* CPU State */
 421     /* TMASK defines different execution modes */
 422 #define MIPS_HFLAG_TMASK  0x007FF
 423 #define MIPS_HFLAG_MODE   0x00007 /* execution modes                    */
 424     /* The KSU flags must be the lowest bits in hflags. The flag order
 425        must be the same as defined for CP0 Status. This allows to use
 426        the bits as the value of mmu_idx. */
 427 #define MIPS_HFLAG_KSU    0x00003 /* kernel/supervisor/user mode mask   */
 428 #define MIPS_HFLAG_UM     0x00002 /* user mode flag                     */
 429 #define MIPS_HFLAG_SM     0x00001 /* supervisor mode flag               */
 430 #define MIPS_HFLAG_KM     0x00000 /* kernel mode flag                   */
 431 #define MIPS_HFLAG_DM     0x00004 /* Debug mode                         */
 432 #define MIPS_HFLAG_64     0x00008 /* 64-bit instructions enabled        */
 433 #define MIPS_HFLAG_CP0    0x00010 /* CP0 enabled                        */
 434 #define MIPS_HFLAG_FPU    0x00020 /* FPU enabled                        */
 435 #define MIPS_HFLAG_F64    0x00040 /* 64-bit FPU enabled                 */
 436     /* True if the MIPS IV COP1X instructions can be used.  This also
 437        controls the non-COP1X instructions RECIP.S, RECIP.D, RSQRT.S
 438        and RSQRT.D.  */
 439 #define MIPS_HFLAG_COP1X  0x00080 /* COP1X instructions enabled         */
 440 #define MIPS_HFLAG_RE     0x00100 /* Reversed endianness                */
 441 #define MIPS_HFLAG_UX     0x00200 /* 64-bit user mode                   */
 442 #define MIPS_HFLAG_M16    0x00400 /* MIPS16 mode flag                   */
 443 #define MIPS_HFLAG_M16_SHIFT 10
 444     /* If translation is interrupted between the branch instruction and
 445      * the delay slot, record what type of branch it is so that we can
 446      * resume translation properly.  It might be possible to reduce
 447      * this from three bits to two.  */
 448 #define MIPS_HFLAG_BMASK_BASE  0x03800
 449 #define MIPS_HFLAG_B      0x00800 /* Unconditional branch               */
 450 #define MIPS_HFLAG_BC     0x01000 /* Conditional branch                 */
 451 #define MIPS_HFLAG_BL     0x01800 /* Likely branch                      */
 452 #define MIPS_HFLAG_BR     0x02000 /* branch to register (can't link TB) */
 453     /* Extra flags about the current pending branch.  */
 454 #define MIPS_HFLAG_BMASK_EXT 0x3C000
 455 #define MIPS_HFLAG_B16    0x04000 /* branch instruction was 16 bits     */
 456 #define MIPS_HFLAG_BDS16  0x08000 /* branch requires 16-bit delay slot  */
 457 #define MIPS_HFLAG_BDS32  0x10000 /* branch requires 32-bit delay slot  */
 458 #define MIPS_HFLAG_BX     0x20000 /* branch exchanges execution mode    */
 459 #define MIPS_HFLAG_BMASK  (MIPS_HFLAG_BMASK_BASE | MIPS_HFLAG_BMASK_EXT)
 460     target_ulong btarget;        /* Jump / branch target               */
 461     target_ulong bcond;          /* Branch condition (if needed)       */
 462
 463     int SYNCI_Step; /* Address step size for SYNCI */
 464     int CCRes; /* Cycle count resolution/divisor */
 465     uint32_t CP0_Status_rw_bitmask; /* Read/write bits in CP0_Status */
 466     uint32_t CP0_TCStatus_rw_bitmask; /* Read/write bits in CP0_TCStatus */
 467     int insn_flags; /* Supported instruction set */
 468
 469     target_ulong tls_value; /* For usermode emulation */
 470
 471     CPU_COMMON
 472
 473     CPUMIPSMVPContext *mvp;
 474 #if !defined(CONFIG_USER_ONLY)
 475     CPUMIPSTLBContext *tlb;
 476 #endif
 477
 478     const mips_def_t *cpu_model;
 479     void *irq[8];
 480     struct QEMUTimer *timer; /* Internal timer */
 481 };
 482
 483 #if !defined(CONFIG_USER_ONLY)
 484 int no_mmu_map_address (CPUMIPSState *env, target_phys_addr_t *physical, int *prot,
 485                         target_ulong address, int rw, int access_type);
 486 int fixed_mmu_map_address (CPUMIPSState *env, target_phys_addr_t *physical, int *prot,
 487                            target_ulong address, int rw, int access_type);
 488 int r4k_map_address (CPUMIPSState *env, target_phys_addr_t *physical, int *prot,
 489                      target_ulong address, int rw, int access_type);
 490 void r4k_helper_tlbwi (void);
 491 void r4k_helper_tlbwr (void);
 492 void r4k_helper_tlbp (void);
 493 void r4k_helper_tlbr (void);
 494
 495 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
 496                           int unused, int size);
 497 #endif
 498
 499 void mips_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
 500
 501 #define cpu_init cpu_mips_init
 502 #define cpu_exec cpu_mips_exec
 503 #define cpu_gen_code cpu_mips_gen_code
 504 #define cpu_signal_handler cpu_mips_signal_handler
 505 #define cpu_list mips_cpu_list
 506
 507 #define CPU_SAVE_VERSION 3
 508
 509 /* MMU modes definitions. We carefully match the indices with our
 510    hflags layout. */
 511 #define MMU_MODE0_SUFFIX _kernel
 512 #define MMU_MODE1_SUFFIX _super
 513 #define MMU_MODE2_SUFFIX _user
 514 #define MMU_USER_IDX 2
 515 static inline int cpu_mmu_index (CPUState *env)
 516 {
 517     return env->hflags & MIPS_HFLAG_KSU;
 518 }
 519
 520 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 521 {
 522     if (newsp)
 523         env->active_tc.gpr[29] = newsp;
 524     env->active_tc.gpr[7] = 0;
 525     env->active_tc.gpr[2] = 0;
 526 }
 527
 528 static inline int cpu_mips_hw_interrupts_pending(CPUState *env)
 529 {
 530     int32_t pending;
 531     int32_t status;
 532     int r;
 533
 534     pending = env->CP0_Cause & CP0Ca_IP_mask;
 535     status = env->CP0_Status & CP0Ca_IP_mask;
 536
 537     if (env->CP0_Config3 & (1 << CP0C3_VEIC)) {
 538         /* A MIPS configured with a vectorizing external interrupt controller
 539            will feed a vector into the Cause pending lines. The core treats
 540            the status lines as a vector level, not as indiviual masks.  */
 541         r = pending > status;
 542     } else {
 543         /* A MIPS configured with compatibility or VInt (Vectored Interrupts)
 544            treats the pending lines as individual interrupt lines, the status
 545            lines are individual masks.  */
 546         r = pending & status;
 547     }
 548     return r;
 549 }
 550
 551 #include "cpu-all.h"
 552
 553 /* Memory access type :
 554  * may be needed for precise access rights control and precise exceptions.
 555  */
 556 enum {
 557     /* 1 bit to define user level / supervisor access */
 558     ACCESS_USER  = 0x00,
 559     ACCESS_SUPER = 0x01,
 560     /* 1 bit to indicate direction */
 561     ACCESS_STORE = 0x02,
 562     /* Type of instruction that generated the access */
 563     ACCESS_CODE  = 0x10, /* Code fetch access                */
 564     ACCESS_INT   = 0x20, /* Integer load/store access        */
 565     ACCESS_FLOAT = 0x30, /* floating point load/store access */
 566 };
 567
 568 /* Exceptions */
 569 enum {
 570     EXCP_NONE          = -1,
 571     EXCP_RESET         = 0,
 572     EXCP_SRESET,
 573     EXCP_DSS,
 574     EXCP_DINT,
 575     EXCP_DDBL,
 576     EXCP_DDBS,
 577     EXCP_NMI,
 578     EXCP_MCHECK,
 579     EXCP_EXT_INTERRUPT, /* 8 */
 580     EXCP_DFWATCH,
 581     EXCP_DIB,
 582     EXCP_IWATCH,
 583     EXCP_AdEL,
 584     EXCP_AdES,
 585     EXCP_TLBF,
 586     EXCP_IBE,
 587     EXCP_DBp, /* 16 */
 588     EXCP_SYSCALL,
 589     EXCP_BREAK,
 590     EXCP_CpU,
 591     EXCP_RI,
 592     EXCP_OVERFLOW,
 593     EXCP_TRAP,
 594     EXCP_FPE,
 595     EXCP_DWATCH, /* 24 */
 596     EXCP_LTLBL,
 597     EXCP_TLBL,
 598     EXCP_TLBS,
 599     EXCP_DBE,
 600     EXCP_THREAD,
 601     EXCP_MDMX,
 602     EXCP_C2E,
 603     EXCP_CACHE, /* 32 */
 604
 605     EXCP_LAST = EXCP_CACHE,
 606 };
 607 /* Dummy exception for conditional stores.  */
 608 #define EXCP_SC 0x100
 609
 610 int cpu_mips_exec(CPUMIPSState *s);
 611 CPUMIPSState *cpu_mips_init(const char *cpu_model);
 612 //~ uint32_t cpu_mips_get_clock (void);
 613 int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
 614
 615 /* mips_timer.c */
 616 uint32_t cpu_mips_get_random (CPUState *env);
 617 uint32_t cpu_mips_get_count (CPUState *env);
 618 void cpu_mips_store_count (CPUState *env, uint32_t value);
 619 void cpu_mips_store_compare (CPUState *env, uint32_t value);
 620 void cpu_mips_start_count(CPUState *env);
 621 void cpu_mips_stop_count(CPUState *env);
 622
 623 /* mips_int.c */
 624 void cpu_mips_soft_irq(CPUState *env, int irq, int level);
 625
 626 /* helper.c */
 627 int cpu_mips_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
 628                                int mmu_idx, int is_softmmu);
 629 #define cpu_handle_mmu_fault cpu_mips_handle_mmu_fault
 630 void do_interrupt (CPUState *env);
 631 #if !defined(CONFIG_USER_ONLY)
 632 void r4k_invalidate_tlb (CPUState *env, int idx, int use_extra);
 633 target_phys_addr_t cpu_mips_translate_address (CPUState *env, target_ulong address,
 634                                                int rw);
 635 #endif
 636
 637 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 638                                         target_ulong *cs_base, int *flags)
 639 {
 640     *pc = env->active_tc.PC;
 641     *cs_base = 0;
 642     *flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK);
 643 }
 644
 645 static inline void cpu_set_tls(CPUState *env, target_ulong newtls)
 646 {
 647     env->tls_value = newtls;
 648 }
 649
 650 #endif /* !defined (__MIPS_CPU_H__) */