target/mips/cpu.h

   1 #ifndef MIPS_CPU_H
   2 #define MIPS_CPU_H
   3
   4 #define ALIGNED_ONLY
   5
   6 #define CPUArchState struct CPUMIPSState
   7
   8 #include "qemu-common.h"
   9 #include "cpu-qom.h"
  10 #include "mips-defs.h"
  11 #include "exec/cpu-defs.h"
  12 #include "fpu/softfloat.h"
  13
  14 struct CPUMIPSState;
  15
  16 typedef struct CPUMIPSTLBContext CPUMIPSTLBContext;
  17
  18 /* MSA Context */
  19 #define MSA_WRLEN (128)
  20
  21 typedef union wr_t wr_t;
  22 union wr_t {
  23     int8_t  b[MSA_WRLEN/8];
  24     int16_t h[MSA_WRLEN/16];
  25     int32_t w[MSA_WRLEN/32];
  26     int64_t d[MSA_WRLEN/64];
  27 };
  28
  29 typedef union fpr_t fpr_t;
  30 union fpr_t {
  31     float64  fd;   /* ieee double precision */
  32     float32  fs[2];/* ieee single precision */
  33     uint64_t d;    /* binary double fixed-point */
  34     uint32_t w[2]; /* binary single fixed-point */
  35 /* FPU/MSA register mapping is not tested on big-endian hosts. */
  36     wr_t     wr;   /* vector data */
  37 };
  38 /* define FP_ENDIAN_IDX to access the same location
  39  * in the fpr_t union regardless of the host endianness
  40  */
  41 #if defined(HOST_WORDS_BIGENDIAN)
  42 #  define FP_ENDIAN_IDX 1
  43 #else
  44 #  define FP_ENDIAN_IDX 0
  45 #endif
  46
  47 typedef struct CPUMIPSFPUContext CPUMIPSFPUContext;
  48 struct CPUMIPSFPUContext {
  49     /* Floating point registers */
  50     fpr_t fpr[32];
  51     float_status fp_status;
  52     /* fpu implementation/revision register (fir) */
  53     uint32_t fcr0;
  54 #define FCR0_FREP 29
  55 #define FCR0_UFRP 28
  56 #define FCR0_HAS2008 23
  57 #define FCR0_F64 22
  58 #define FCR0_L 21
  59 #define FCR0_W 20
  60 #define FCR0_3D 19
  61 #define FCR0_PS 18
  62 #define FCR0_D 17
  63 #define FCR0_S 16
  64 #define FCR0_PRID 8
  65 #define FCR0_REV 0
  66     /* fcsr */
  67     uint32_t fcr31_rw_bitmask;
  68     uint32_t fcr31;
  69 #define FCR31_FS 24
  70 #define FCR31_ABS2008 19
  71 #define FCR31_NAN2008 18
  72 #define SET_FP_COND(num,env)     do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  73 #define CLEAR_FP_COND(num,env)   do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  74 #define GET_FP_COND(env)         ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1))
  75 #define GET_FP_CAUSE(reg)        (((reg) >> 12) & 0x3f)
  76 #define GET_FP_ENABLE(reg)       (((reg) >>  7) & 0x1f)
  77 #define GET_FP_FLAGS(reg)        (((reg) >>  2) & 0x1f)
  78 #define SET_FP_CAUSE(reg,v)      do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0)
  79 #define SET_FP_ENABLE(reg,v)     do { (reg) = ((reg) & ~(0x1f <<  7)) | ((v & 0x1f) << 7); } while(0)
  80 #define SET_FP_FLAGS(reg,v)      do { (reg) = ((reg) & ~(0x1f <<  2)) | ((v & 0x1f) << 2); } while(0)
  81 #define UPDATE_FP_FLAGS(reg,v)   do { (reg) |= ((v & 0x1f) << 2); } while(0)
  82 #define FP_INEXACT        1
  83 #define FP_UNDERFLOW      2
  84 #define FP_OVERFLOW       4
  85 #define FP_DIV0           8
  86 #define FP_INVALID        16
  87 #define FP_UNIMPLEMENTED  32
  88 };
  89
  90 #define NB_MMU_MODES 4
  91 #define TARGET_INSN_START_EXTRA_WORDS 2
  92
  93 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;
  94 struct CPUMIPSMVPContext {
  95     int32_t CP0_MVPControl;
  96 #define CP0MVPCo_CPA    3
  97 #define CP0MVPCo_STLB   2
  98 #define CP0MVPCo_VPC    1
  99 #define CP0MVPCo_EVP    0
 100     int32_t CP0_MVPConf0;
 101 #define CP0MVPC0_M      31
 102 #define CP0MVPC0_TLBS   29
 103 #define CP0MVPC0_GS     28
 104 #define CP0MVPC0_PCP    27
 105 #define CP0MVPC0_PTLBE  16
 106 #define CP0MVPC0_TCA    15
 107 #define CP0MVPC0_PVPE   10
 108 #define CP0MVPC0_PTC    0
 109     int32_t CP0_MVPConf1;
 110 #define CP0MVPC1_CIM    31
 111 #define CP0MVPC1_CIF    30
 112 #define CP0MVPC1_PCX    20
 113 #define CP0MVPC1_PCP2   10
 114 #define CP0MVPC1_PCP1   0
 115 };
 116
 117 typedef struct mips_def_t mips_def_t;
 118
 119 #define MIPS_SHADOW_SET_MAX 16
 120 #define MIPS_TC_MAX 5
 121 #define MIPS_FPU_MAX 1
 122 #define MIPS_DSP_ACC 4
 123 #define MIPS_KSCRATCH_NUM 6
 124 #define MIPS_MAAR_MAX 16 /* Must be an even number. */
 125
 126 typedef struct TCState TCState;
 127 struct TCState {
 128     target_ulong gpr[32];
 129     target_ulong PC;
 130     target_ulong HI[MIPS_DSP_ACC];
 131     target_ulong LO[MIPS_DSP_ACC];
 132     target_ulong ACX[MIPS_DSP_ACC];
 133     target_ulong DSPControl;
 134     int32_t CP0_TCStatus;
 135 #define CP0TCSt_TCU3    31
 136 #define CP0TCSt_TCU2    30
 137 #define CP0TCSt_TCU1    29
 138 #define CP0TCSt_TCU0    28
 139 #define CP0TCSt_TMX     27
 140 #define CP0TCSt_RNST    23
 141 #define CP0TCSt_TDS     21
 142 #define CP0TCSt_DT      20
 143 #define CP0TCSt_DA      15
 144 #define CP0TCSt_A       13
 145 #define CP0TCSt_TKSU    11
 146 #define CP0TCSt_IXMT    10
 147 #define CP0TCSt_TASID   0
 148     int32_t CP0_TCBind;
 149 #define CP0TCBd_CurTC   21
 150 #define CP0TCBd_TBE     17
 151 #define CP0TCBd_CurVPE  0
 152     target_ulong CP0_TCHalt;
 153     target_ulong CP0_TCContext;
 154     target_ulong CP0_TCSchedule;
 155     target_ulong CP0_TCScheFBack;
 156     int32_t CP0_Debug_tcstatus;
 157     target_ulong CP0_UserLocal;
 158
 159     int32_t msacsr;
 160
 161 #define MSACSR_FS       24
 162 #define MSACSR_FS_MASK  (1 << MSACSR_FS)
 163 #define MSACSR_NX       18
 164 #define MSACSR_NX_MASK  (1 << MSACSR_NX)
 165 #define MSACSR_CEF      2
 166 #define MSACSR_CEF_MASK (0xffff << MSACSR_CEF)
 167 #define MSACSR_RM       0
 168 #define MSACSR_RM_MASK  (0x3 << MSACSR_RM)
 169 #define MSACSR_MASK     (MSACSR_RM_MASK | MSACSR_CEF_MASK | MSACSR_NX_MASK | \
 170         MSACSR_FS_MASK)
 171
 172     float_status msa_fp_status;
 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 #if defined(TARGET_MIPS64)
 186 # define PABITS_BASE 36
 187 #else
 188 # define PABITS_BASE 32
 189 #endif
 190     target_ulong SEGMask;
 191     uint64_t PAMask;
 192 #define PAMASK_BASE ((1ULL << PABITS_BASE) - 1)
 193
 194     int32_t msair;
 195 #define MSAIR_ProcID    8
 196 #define MSAIR_Rev       0
 197
 198     int32_t CP0_Index;
 199     /* CP0_MVP* are per MVP registers. */
 200     int32_t CP0_VPControl;
 201 #define CP0VPCtl_DIS    0
 202     int32_t CP0_Random;
 203     int32_t CP0_VPEControl;
 204 #define CP0VPECo_YSI    21
 205 #define CP0VPECo_GSI    20
 206 #define CP0VPECo_EXCPT  16
 207 #define CP0VPECo_TE     15
 208 #define CP0VPECo_TargTC 0
 209     int32_t CP0_VPEConf0;
 210 #define CP0VPEC0_M      31
 211 #define CP0VPEC0_XTC    21
 212 #define CP0VPEC0_TCS    19
 213 #define CP0VPEC0_SCS    18
 214 #define CP0VPEC0_DSC    17
 215 #define CP0VPEC0_ICS    16
 216 #define CP0VPEC0_MVP    1
 217 #define CP0VPEC0_VPA    0
 218     int32_t CP0_VPEConf1;
 219 #define CP0VPEC1_NCX    20
 220 #define CP0VPEC1_NCP2   10
 221 #define CP0VPEC1_NCP1   0
 222     target_ulong CP0_YQMask;
 223     target_ulong CP0_VPESchedule;
 224     target_ulong CP0_VPEScheFBack;
 225     int32_t CP0_VPEOpt;
 226 #define CP0VPEOpt_IWX7  15
 227 #define CP0VPEOpt_IWX6  14
 228 #define CP0VPEOpt_IWX5  13
 229 #define CP0VPEOpt_IWX4  12
 230 #define CP0VPEOpt_IWX3  11
 231 #define CP0VPEOpt_IWX2  10
 232 #define CP0VPEOpt_IWX1  9
 233 #define CP0VPEOpt_IWX0  8
 234 #define CP0VPEOpt_DWX7  7
 235 #define CP0VPEOpt_DWX6  6
 236 #define CP0VPEOpt_DWX5  5
 237 #define CP0VPEOpt_DWX4  4
 238 #define CP0VPEOpt_DWX3  3
 239 #define CP0VPEOpt_DWX2  2
 240 #define CP0VPEOpt_DWX1  1
 241 #define CP0VPEOpt_DWX0  0
 242     uint64_t CP0_EntryLo0;
 243     uint64_t CP0_EntryLo1;
 244 #if defined(TARGET_MIPS64)
 245 # define CP0EnLo_RI 63
 246 # define CP0EnLo_XI 62
 247 #else
 248 # define CP0EnLo_RI 31
 249 # define CP0EnLo_XI 30
 250 #endif
 251     int32_t CP0_GlobalNumber;
 252 #define CP0GN_VPId 0
 253     target_ulong CP0_Context;
 254     target_ulong CP0_KScratch[MIPS_KSCRATCH_NUM];
 255     int32_t CP0_PageMask;
 256     int32_t CP0_PageGrain_rw_bitmask;
 257     int32_t CP0_PageGrain;
 258 #define CP0PG_RIE 31
 259 #define CP0PG_XIE 30
 260 #define CP0PG_ELPA 29
 261 #define CP0PG_IEC 27
 262     target_ulong CP0_SegCtl0;
 263     target_ulong CP0_SegCtl1;
 264     target_ulong CP0_SegCtl2;
 265 #define CP0SC_PA        9
 266 #define CP0SC_PA_MASK   (0x7FULL << CP0SC_PA)
 267 #define CP0SC_PA_1GMASK (0x7EULL << CP0SC_PA)
 268 #define CP0SC_AM        4
 269 #define CP0SC_AM_MASK   (0x7ULL << CP0SC_AM)
 270 #define CP0SC_AM_UK     0ULL
 271 #define CP0SC_AM_MK     1ULL
 272 #define CP0SC_AM_MSK    2ULL
 273 #define CP0SC_AM_MUSK   3ULL
 274 #define CP0SC_AM_MUSUK  4ULL
 275 #define CP0SC_AM_USK    5ULL
 276 #define CP0SC_AM_UUSK   7ULL
 277 #define CP0SC_EU        3
 278 #define CP0SC_EU_MASK   (1ULL << CP0SC_EU)
 279 #define CP0SC_C         0
 280 #define CP0SC_C_MASK    (0x7ULL << CP0SC_C)
 281 #define CP0SC_MASK      (CP0SC_C_MASK | CP0SC_EU_MASK | CP0SC_AM_MASK | \
 282                          CP0SC_PA_MASK)
 283 #define CP0SC_1GMASK    (CP0SC_C_MASK | CP0SC_EU_MASK | CP0SC_AM_MASK | \
 284                          CP0SC_PA_1GMASK)
 285 #define CP0SC0_MASK     (CP0SC_MASK | (CP0SC_MASK << 16))
 286 #define CP0SC1_XAM      59
 287 #define CP0SC1_XAM_MASK (0x7ULL << CP0SC1_XAM)
 288 #define CP0SC1_MASK     (CP0SC_MASK | (CP0SC_MASK << 16) | CP0SC1_XAM_MASK)
 289 #define CP0SC2_XR       56
 290 #define CP0SC2_XR_MASK  (0xFFULL << CP0SC2_XR)
 291 #define CP0SC2_MASK     (CP0SC_1GMASK | (CP0SC_1GMASK << 16) | CP0SC2_XR_MASK)
 292     int32_t CP0_Wired;
 293     int32_t CP0_SRSConf0_rw_bitmask;
 294     int32_t CP0_SRSConf0;
 295 #define CP0SRSC0_M      31
 296 #define CP0SRSC0_SRS3   20
 297 #define CP0SRSC0_SRS2   10
 298 #define CP0SRSC0_SRS1   0
 299     int32_t CP0_SRSConf1_rw_bitmask;
 300     int32_t CP0_SRSConf1;
 301 #define CP0SRSC1_M      31
 302 #define CP0SRSC1_SRS6   20
 303 #define CP0SRSC1_SRS5   10
 304 #define CP0SRSC1_SRS4   0
 305     int32_t CP0_SRSConf2_rw_bitmask;
 306     int32_t CP0_SRSConf2;
 307 #define CP0SRSC2_M      31
 308 #define CP0SRSC2_SRS9   20
 309 #define CP0SRSC2_SRS8   10
 310 #define CP0SRSC2_SRS7   0
 311     int32_t CP0_SRSConf3_rw_bitmask;
 312     int32_t CP0_SRSConf3;
 313 #define CP0SRSC3_M      31
 314 #define CP0SRSC3_SRS12  20
 315 #define CP0SRSC3_SRS11  10
 316 #define CP0SRSC3_SRS10  0
 317     int32_t CP0_SRSConf4_rw_bitmask;
 318     int32_t CP0_SRSConf4;
 319 #define CP0SRSC4_SRS15  20
 320 #define CP0SRSC4_SRS14  10
 321 #define CP0SRSC4_SRS13  0
 322     int32_t CP0_HWREna;
 323     target_ulong CP0_BadVAddr;
 324     uint32_t CP0_BadInstr;
 325     uint32_t CP0_BadInstrP;
 326     uint32_t CP0_BadInstrX;
 327     int32_t CP0_Count;
 328     target_ulong CP0_EntryHi;
 329 #define CP0EnHi_EHINV 10
 330     target_ulong CP0_EntryHi_ASID_mask;
 331     int32_t CP0_Compare;
 332     int32_t CP0_Status;
 333 #define CP0St_CU3   31
 334 #define CP0St_CU2   30
 335 #define CP0St_CU1   29
 336 #define CP0St_CU0   28
 337 #define CP0St_RP    27
 338 #define CP0St_FR    26
 339 #define CP0St_RE    25
 340 #define CP0St_MX    24
 341 #define CP0St_PX    23
 342 #define CP0St_BEV   22
 343 #define CP0St_TS    21
 344 #define CP0St_SR    20
 345 #define CP0St_NMI   19
 346 #define CP0St_IM    8
 347 #define CP0St_KX    7
 348 #define CP0St_SX    6
 349 #define CP0St_UX    5
 350 #define CP0St_KSU   3
 351 #define CP0St_ERL   2
 352 #define CP0St_EXL   1
 353 #define CP0St_IE    0
 354     int32_t CP0_IntCtl;
 355 #define CP0IntCtl_IPTI 29
 356 #define CP0IntCtl_IPPCI 26
 357 #define CP0IntCtl_VS 5
 358     int32_t CP0_SRSCtl;
 359 #define CP0SRSCtl_HSS 26
 360 #define CP0SRSCtl_EICSS 18
 361 #define CP0SRSCtl_ESS 12
 362 #define CP0SRSCtl_PSS 6
 363 #define CP0SRSCtl_CSS 0
 364     int32_t CP0_SRSMap;
 365 #define CP0SRSMap_SSV7 28
 366 #define CP0SRSMap_SSV6 24
 367 #define CP0SRSMap_SSV5 20
 368 #define CP0SRSMap_SSV4 16
 369 #define CP0SRSMap_SSV3 12
 370 #define CP0SRSMap_SSV2 8
 371 #define CP0SRSMap_SSV1 4
 372 #define CP0SRSMap_SSV0 0
 373     int32_t CP0_Cause;
 374 #define CP0Ca_BD   31
 375 #define CP0Ca_TI   30
 376 #define CP0Ca_CE   28
 377 #define CP0Ca_DC   27
 378 #define CP0Ca_PCI  26
 379 #define CP0Ca_IV   23
 380 #define CP0Ca_WP   22
 381 #define CP0Ca_IP    8
 382 #define CP0Ca_IP_mask 0x0000FF00
 383 #define CP0Ca_EC    2
 384     target_ulong CP0_EPC;
 385     int32_t CP0_PRid;
 386     target_ulong CP0_EBase;
 387     target_ulong CP0_EBaseWG_rw_bitmask;
 388 #define CP0EBase_WG 11
 389     target_ulong CP0_CMGCRBase;
 390     int32_t CP0_Config0;
 391 #define CP0C0_M    31
 392 #define CP0C0_K23  28    /* 30..28 */
 393 #define CP0C0_KU   25    /* 27..25 */
 394 #define CP0C0_MDU  20
 395 #define CP0C0_MM   18
 396 #define CP0C0_BM   16
 397 #define CP0C0_Impl 16    /* 24..16 */
 398 #define CP0C0_BE   15
 399 #define CP0C0_AT   13    /* 14..13 */
 400 #define CP0C0_AR   10    /* 12..10 */
 401 #define CP0C0_MT   7     /*  9..7  */
 402 #define CP0C0_VI   3
 403 #define CP0C0_K0   0     /*  2..0  */
 404     int32_t CP0_Config1;
 405 #define CP0C1_M    31
 406 #define CP0C1_MMU  25    /* 30..25 */
 407 #define CP0C1_IS   22    /* 24..22 */
 408 #define CP0C1_IL   19    /* 21..19 */
 409 #define CP0C1_IA   16    /* 18..16 */
 410 #define CP0C1_DS   13    /* 15..13 */
 411 #define CP0C1_DL   10    /* 12..10 */
 412 #define CP0C1_DA   7     /*  9..7  */
 413 #define CP0C1_C2   6
 414 #define CP0C1_MD   5
 415 #define CP0C1_PC   4
 416 #define CP0C1_WR   3
 417 #define CP0C1_CA   2
 418 #define CP0C1_EP   1
 419 #define CP0C1_FP   0
 420     int32_t CP0_Config2;
 421 #define CP0C2_M    31
 422 #define CP0C2_TU   28    /* 30..28 */
 423 #define CP0C2_TS   24    /* 27..24 */
 424 #define CP0C2_TL   20    /* 23..20 */
 425 #define CP0C2_TA   16    /* 19..16 */
 426 #define CP0C2_SU   12    /* 15..12 */
 427 #define CP0C2_SS   8     /* 11..8  */
 428 #define CP0C2_SL   4     /*  7..4  */
 429 #define CP0C2_SA   0     /*  3..0  */
 430     int32_t CP0_Config3;
 431 #define CP0C3_M            31
 432 #define CP0C3_BPG          30
 433 #define CP0C3_CMGCR        29
 434 #define CP0C3_MSAP         28
 435 #define CP0C3_BP           27
 436 #define CP0C3_BI           26
 437 #define CP0C3_SC           25
 438 #define CP0C3_PW           24
 439 #define CP0C3_VZ           23
 440 #define CP0C3_IPLV         21    /* 22..21 */
 441 #define CP0C3_MMAR         18    /* 20..18 */
 442 #define CP0C3_MCU          17
 443 #define CP0C3_ISA_ON_EXC   16
 444 #define CP0C3_ISA          14    /* 15..14 */
 445 #define CP0C3_ULRI         13
 446 #define CP0C3_RXI          12
 447 #define CP0C3_DSP2P        11
 448 #define CP0C3_DSPP         10
 449 #define CP0C3_CTXTC        9
 450 #define CP0C3_ITL          8
 451 #define CP0C3_LPA          7
 452 #define CP0C3_VEIC         6
 453 #define CP0C3_VInt         5
 454 #define CP0C3_SP           4
 455 #define CP0C3_CDMM         3
 456 #define CP0C3_MT           2
 457 #define CP0C3_SM           1
 458 #define CP0C3_TL           0
 459     int32_t CP0_Config4;
 460     int32_t CP0_Config4_rw_bitmask;
 461 #define CP0C4_M            31
 462 #define CP0C4_IE           29    /* 30..29 */
 463 #define CP0C4_AE           28
 464 #define CP0C4_VTLBSizeExt  24    /* 27..24 */
 465 #define CP0C4_KScrExist    16
 466 #define CP0C4_MMUExtDef    14
 467 #define CP0C4_FTLBPageSize 8     /* 12..8  */
 468 /* bit layout if MMUExtDef=1 */
 469 #define CP0C4_MMUSizeExt   0     /*  7..0  */
 470 /* bit layout if MMUExtDef=2 */
 471 #define CP0C4_FTLBWays     4     /*  7..4  */
 472 #define CP0C4_FTLBSets     0     /*  3..0  */
 473     int32_t CP0_Config5;
 474     int32_t CP0_Config5_rw_bitmask;
 475 #define CP0C5_M            31
 476 #define CP0C5_K            30
 477 #define CP0C5_CV           29
 478 #define CP0C5_EVA          28
 479 #define CP0C5_MSAEn        27
 480 #define CP0C5_PMJ          23    /* 25..23 */
 481 #define CP0C5_WR2          22
 482 #define CP0C5_NMS          21
 483 #define CP0C5_ULS          20
 484 #define CP0C5_XPA          19
 485 #define CP0C5_CRCP         18
 486 #define CP0C5_MI           17
 487 #define CP0C5_GI           15    /* 16..15 */
 488 #define CP0C5_CA2          14
 489 #define CP0C5_XNP          13
 490 #define CP0C5_DEC          11
 491 #define CP0C5_L2C          10
 492 #define CP0C5_UFE          9
 493 #define CP0C5_FRE          8
 494 #define CP0C5_VP           7
 495 #define CP0C5_SBRI         6
 496 #define CP0C5_MVH          5
 497 #define CP0C5_LLB          4
 498 #define CP0C5_MRP          3
 499 #define CP0C5_UFR          2
 500 #define CP0C5_NFExists     0
 501     int32_t CP0_Config6;
 502     int32_t CP0_Config7;
 503     uint64_t CP0_MAAR[MIPS_MAAR_MAX];
 504     int32_t CP0_MAARI;
 505     /* XXX: Maybe make LLAddr per-TC? */
 506     uint64_t lladdr;
 507     target_ulong llval;
 508     target_ulong llnewval;
 509     uint64_t llval_wp;
 510     uint32_t llnewval_wp;
 511     target_ulong llreg;
 512     uint64_t CP0_LLAddr_rw_bitmask;
 513     int CP0_LLAddr_shift;
 514     target_ulong CP0_WatchLo[8];
 515     int32_t CP0_WatchHi[8];
 516 #define CP0WH_ASID 16
 517     target_ulong CP0_XContext;
 518     int32_t CP0_Framemask;
 519     int32_t CP0_Debug;
 520 #define CP0DB_DBD  31
 521 #define CP0DB_DM   30
 522 #define CP0DB_LSNM 28
 523 #define CP0DB_Doze 27
 524 #define CP0DB_Halt 26
 525 #define CP0DB_CNT  25
 526 #define CP0DB_IBEP 24
 527 #define CP0DB_DBEP 21
 528 #define CP0DB_IEXI 20
 529 #define CP0DB_VER  15
 530 #define CP0DB_DEC  10
 531 #define CP0DB_SSt  8
 532 #define CP0DB_DINT 5
 533 #define CP0DB_DIB  4
 534 #define CP0DB_DDBS 3
 535 #define CP0DB_DDBL 2
 536 #define CP0DB_DBp  1
 537 #define CP0DB_DSS  0
 538     target_ulong CP0_DEPC;
 539     int32_t CP0_Performance0;
 540     int32_t CP0_ErrCtl;
 541 #define CP0EC_WST 29
 542 #define CP0EC_SPR 28
 543 #define CP0EC_ITC 26
 544     uint64_t CP0_TagLo;
 545     int32_t CP0_DataLo;
 546     int32_t CP0_TagHi;
 547     int32_t CP0_DataHi;
 548     target_ulong CP0_ErrorEPC;
 549     int32_t CP0_DESAVE;
 550     /* We waste some space so we can handle shadow registers like TCs. */
 551     TCState tcs[MIPS_SHADOW_SET_MAX];
 552     CPUMIPSFPUContext fpus[MIPS_FPU_MAX];
 553     /* QEMU */
 554     int error_code;
 555 #define EXCP_TLB_NOMATCH   0x1
 556 #define EXCP_INST_NOTAVAIL 0x2 /* No valid instruction word for BadInstr */
 557     uint32_t hflags;    /* CPU State */
 558     /* TMASK defines different execution modes */
 559 #define MIPS_HFLAG_TMASK  0x1F5807FF
 560 #define MIPS_HFLAG_MODE   0x00007 /* execution modes                    */
 561     /* The KSU flags must be the lowest bits in hflags. The flag order
 562        must be the same as defined for CP0 Status. This allows to use
 563        the bits as the value of mmu_idx. */
 564 #define MIPS_HFLAG_KSU    0x00003 /* kernel/supervisor/user mode mask   */
 565 #define MIPS_HFLAG_UM     0x00002 /* user mode flag                     */
 566 #define MIPS_HFLAG_SM     0x00001 /* supervisor mode flag               */
 567 #define MIPS_HFLAG_KM     0x00000 /* kernel mode flag                   */
 568 #define MIPS_HFLAG_DM     0x00004 /* Debug mode                         */
 569 #define MIPS_HFLAG_64     0x00008 /* 64-bit instructions enabled        */
 570 #define MIPS_HFLAG_CP0    0x00010 /* CP0 enabled                        */
 571 #define MIPS_HFLAG_FPU    0x00020 /* FPU enabled                        */
 572 #define MIPS_HFLAG_F64    0x00040 /* 64-bit FPU enabled                 */
 573     /* True if the MIPS IV COP1X instructions can be used.  This also
 574        controls the non-COP1X instructions RECIP.S, RECIP.D, RSQRT.S
 575        and RSQRT.D.  */
 576 #define MIPS_HFLAG_COP1X  0x00080 /* COP1X instructions enabled         */
 577 #define MIPS_HFLAG_RE     0x00100 /* Reversed endianness                */
 578 #define MIPS_HFLAG_AWRAP  0x00200 /* 32-bit compatibility address wrapping */
 579 #define MIPS_HFLAG_M16    0x00400 /* MIPS16 mode flag                   */
 580 #define MIPS_HFLAG_M16_SHIFT 10
 581     /* If translation is interrupted between the branch instruction and
 582      * the delay slot, record what type of branch it is so that we can
 583      * resume translation properly.  It might be possible to reduce
 584      * this from three bits to two.  */
 585 #define MIPS_HFLAG_BMASK_BASE  0x803800
 586 #define MIPS_HFLAG_B      0x00800 /* Unconditional branch               */
 587 #define MIPS_HFLAG_BC     0x01000 /* Conditional branch                 */
 588 #define MIPS_HFLAG_BL     0x01800 /* Likely branch                      */
 589 #define MIPS_HFLAG_BR     0x02000 /* branch to register (can't link TB) */
 590     /* Extra flags about the current pending branch.  */
 591 #define MIPS_HFLAG_BMASK_EXT 0x7C000
 592 #define MIPS_HFLAG_B16    0x04000 /* branch instruction was 16 bits     */
 593 #define MIPS_HFLAG_BDS16  0x08000 /* branch requires 16-bit delay slot  */
 594 #define MIPS_HFLAG_BDS32  0x10000 /* branch requires 32-bit delay slot  */
 595 #define MIPS_HFLAG_BDS_STRICT  0x20000 /* Strict delay slot size */
 596 #define MIPS_HFLAG_BX     0x40000 /* branch exchanges execution mode    */
 597 #define MIPS_HFLAG_BMASK  (MIPS_HFLAG_BMASK_BASE | MIPS_HFLAG_BMASK_EXT)
 598     /* MIPS DSP resources access. */
 599 #define MIPS_HFLAG_DSP   0x080000  /* Enable access to MIPS DSP resources. */
 600 #define MIPS_HFLAG_DSPR2 0x100000  /* Enable access to MIPS DSPR2 resources. */
 601     /* Extra flag about HWREna register. */
 602 #define MIPS_HFLAG_HWRENA_ULR 0x200000 /* ULR bit from HWREna is set. */
 603 #define MIPS_HFLAG_SBRI  0x400000 /* R6 SDBBP causes RI excpt. in user mode */
 604 #define MIPS_HFLAG_FBNSLOT 0x800000 /* Forbidden slot                   */
 605 #define MIPS_HFLAG_MSA   0x1000000
 606 #define MIPS_HFLAG_FRE   0x2000000 /* FRE enabled */
 607 #define MIPS_HFLAG_ELPA  0x4000000
 608 #define MIPS_HFLAG_ITC_CACHE  0x8000000 /* CACHE instr. operates on ITC tag */
 609 #define MIPS_HFLAG_ERL   0x10000000 /* error level flag */
 610     target_ulong btarget;        /* Jump / branch target               */
 611     target_ulong bcond;          /* Branch condition (if needed)       */
 612
 613     int SYNCI_Step; /* Address step size for SYNCI */
 614     int CCRes; /* Cycle count resolution/divisor */
 615     uint32_t CP0_Status_rw_bitmask; /* Read/write bits in CP0_Status */
 616     uint32_t CP0_TCStatus_rw_bitmask; /* Read/write bits in CP0_TCStatus */
 617     int insn_flags; /* Supported instruction set */
 618
 619     /* Fields up to this point are cleared by a CPU reset */
 620     struct {} end_reset_fields;
 621
 622     CPU_COMMON
 623
 624     /* Fields from here on are preserved across CPU reset. */
 625     CPUMIPSMVPContext *mvp;
 626 #if !defined(CONFIG_USER_ONLY)
 627     CPUMIPSTLBContext *tlb;
 628 #endif
 629
 630     const mips_def_t *cpu_model;
 631     void *irq[8];
 632     QEMUTimer *timer; /* Internal timer */
 633     MemoryRegion *itc_tag; /* ITC Configuration Tags */
 634     target_ulong exception_base; /* ExceptionBase input to the core */
 635 };
 636
 637 /**
 638  * MIPSCPU:
 639  * @env: #CPUMIPSState
 640  *
 641  * A MIPS CPU.
 642  */
 643 struct MIPSCPU {
 644     /*< private >*/
 645     CPUState parent_obj;
 646     /*< public >*/
 647
 648     CPUMIPSState env;
 649 };
 650
 651 static inline MIPSCPU *mips_env_get_cpu(CPUMIPSState *env)
 652 {
 653     return container_of(env, MIPSCPU, env);
 654 }
 655
 656 #define ENV_GET_CPU(e) CPU(mips_env_get_cpu(e))
 657
 658 #define ENV_OFFSET offsetof(MIPSCPU, env)
 659
 660 void mips_cpu_list (FILE *f, fprintf_function cpu_fprintf);
 661
 662 #define cpu_signal_handler cpu_mips_signal_handler
 663 #define cpu_list mips_cpu_list
 664
 665 extern void cpu_wrdsp(uint32_t rs, uint32_t mask_num, CPUMIPSState *env);
 666 extern uint32_t cpu_rddsp(uint32_t mask_num, CPUMIPSState *env);
 667
 668 /* MMU modes definitions. We carefully match the indices with our
 669    hflags layout. */
 670 #define MMU_MODE0_SUFFIX _kernel
 671 #define MMU_MODE1_SUFFIX _super
 672 #define MMU_MODE2_SUFFIX _user
 673 #define MMU_MODE3_SUFFIX _error
 674 #define MMU_USER_IDX 2
 675
 676 static inline int hflags_mmu_index(uint32_t hflags)
 677 {
 678     if (hflags & MIPS_HFLAG_ERL) {
 679         return 3; /* ERL */
 680     } else {
 681         return hflags & MIPS_HFLAG_KSU;
 682     }
 683 }
 684
 685 static inline int cpu_mmu_index (CPUMIPSState *env, bool ifetch)
 686 {
 687     return hflags_mmu_index(env->hflags);
 688 }
 689
 690 #include "exec/cpu-all.h"
 691
 692 /* Memory access type :
 693  * may be needed for precise access rights control and precise exceptions.
 694  */
 695 enum {
 696     /* 1 bit to define user level / supervisor access */
 697     ACCESS_USER  = 0x00,
 698     ACCESS_SUPER = 0x01,
 699     /* 1 bit to indicate direction */
 700     ACCESS_STORE = 0x02,
 701     /* Type of instruction that generated the access */
 702     ACCESS_CODE  = 0x10, /* Code fetch access                */
 703     ACCESS_INT   = 0x20, /* Integer load/store access        */
 704     ACCESS_FLOAT = 0x30, /* floating point load/store access */
 705 };
 706
 707 /* Exceptions */
 708 enum {
 709     EXCP_NONE          = -1,
 710     EXCP_RESET         = 0,
 711     EXCP_SRESET,
 712     EXCP_DSS,
 713     EXCP_DINT,
 714     EXCP_DDBL,
 715     EXCP_DDBS,
 716     EXCP_NMI,
 717     EXCP_MCHECK,
 718     EXCP_EXT_INTERRUPT, /* 8 */
 719     EXCP_DFWATCH,
 720     EXCP_DIB,
 721     EXCP_IWATCH,
 722     EXCP_AdEL,
 723     EXCP_AdES,
 724     EXCP_TLBF,
 725     EXCP_IBE,
 726     EXCP_DBp, /* 16 */
 727     EXCP_SYSCALL,
 728     EXCP_BREAK,
 729     EXCP_CpU,
 730     EXCP_RI,
 731     EXCP_OVERFLOW,
 732     EXCP_TRAP,
 733     EXCP_FPE,
 734     EXCP_DWATCH, /* 24 */
 735     EXCP_LTLBL,
 736     EXCP_TLBL,
 737     EXCP_TLBS,
 738     EXCP_DBE,
 739     EXCP_THREAD,
 740     EXCP_MDMX,
 741     EXCP_C2E,
 742     EXCP_CACHE, /* 32 */
 743     EXCP_DSPDIS,
 744     EXCP_MSADIS,
 745     EXCP_MSAFPE,
 746     EXCP_TLBXI,
 747     EXCP_TLBRI,
 748
 749     EXCP_LAST = EXCP_TLBRI,
 750 };
 751 /* Dummy exception for conditional stores.  */
 752 #define EXCP_SC 0x100
 753
 754 /*
 755  * This is an internally generated WAKE request line.
 756  * It is driven by the CPU itself. Raised when the MT
 757  * block wants to wake a VPE from an inactive state and
 758  * cleared when VPE goes from active to inactive.
 759  */
 760 #define CPU_INTERRUPT_WAKE CPU_INTERRUPT_TGT_INT_0
 761
 762 int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
 763
 764 #define MIPS_CPU_TYPE_SUFFIX "-" TYPE_MIPS_CPU
 765 #define MIPS_CPU_TYPE_NAME(model) model MIPS_CPU_TYPE_SUFFIX
 766 #define CPU_RESOLVING_TYPE TYPE_MIPS_CPU
 767
 768 bool cpu_supports_cps_smp(const char *cpu_type);
 769 bool cpu_supports_isa(const char *cpu_type, unsigned int isa);
 770 void cpu_set_exception_base(int vp_index, target_ulong address);
 771
 772 /* mips_int.c */
 773 void cpu_mips_soft_irq(CPUMIPSState *env, int irq, int level);
 774
 775 /* helper.c */
 776 target_ulong exception_resume_pc (CPUMIPSState *env);
 777
 778 static inline void restore_snan_bit_mode(CPUMIPSState *env)
 779 {
 780     set_snan_bit_is_one((env->active_fpu.fcr31 & (1 << FCR31_NAN2008)) == 0,
 781                         &env->active_fpu.fp_status);
 782 }
 783
 784 static inline void cpu_get_tb_cpu_state(CPUMIPSState *env, target_ulong *pc,
 785                                         target_ulong *cs_base, uint32_t *flags)
 786 {
 787     *pc = env->active_tc.PC;
 788     *cs_base = 0;
 789     *flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK |
 790                             MIPS_HFLAG_HWRENA_ULR);
 791 }
 792
 793 #endif /* MIPS_CPU_H */