target-mips/cpu.h

   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 #define CPUArchState struct CPUMIPSState
  11
  12 #include "config.h"
  13 #include "qemu-common.h"
  14 #include "mips-defs.h"
  15 #include "exec/cpu-defs.h"
  16 #include "fpu/softfloat.h"
  17
  18 struct CPUMIPSState;
  19
  20 typedef struct r4k_tlb_t r4k_tlb_t;
  21 struct r4k_tlb_t {
  22     target_ulong VPN;
  23     uint32_t PageMask;
  24     uint_fast8_t ASID;
  25     uint_fast16_t G:1;
  26     uint_fast16_t C0:3;
  27     uint_fast16_t C1:3;
  28     uint_fast16_t V0:1;
  29     uint_fast16_t V1:1;
  30     uint_fast16_t D0:1;
  31     uint_fast16_t D1:1;
  32     target_ulong PFN[2];
  33 };
  34
  35 #if !defined(CONFIG_USER_ONLY)
  36 typedef struct CPUMIPSTLBContext CPUMIPSTLBContext;
  37 struct CPUMIPSTLBContext {
  38     uint32_t nb_tlb;
  39     uint32_t tlb_in_use;
  40     int (*map_address) (struct CPUMIPSState *env, hwaddr *physical, int *prot, target_ulong address, int rw, int access_type);
  41     void (*helper_tlbwi)(struct CPUMIPSState *env);
  42     void (*helper_tlbwr)(struct CPUMIPSState *env);
  43     void (*helper_tlbp)(struct CPUMIPSState *env);
  44     void (*helper_tlbr)(struct CPUMIPSState *env);
  45     union {
  46         struct {
  47             r4k_tlb_t tlb[MIPS_TLB_MAX];
  48         } r4k;
  49     } mmu;
  50 };
  51 #endif
  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 endianness
  62  */
  63 #if defined(HOST_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     float_status fp_status;
  74     /* fpu implementation/revision register (fir) */
  75     uint32_t fcr0;
  76 #define FCR0_UFRP 28
  77 #define FCR0_F64 22
  78 #define FCR0_L 21
  79 #define FCR0_W 20
  80 #define FCR0_3D 19
  81 #define FCR0_PS 18
  82 #define FCR0_D 17
  83 #define FCR0_S 16
  84 #define FCR0_PRID 8
  85 #define FCR0_REV 0
  86     /* fcsr */
  87     uint32_t fcr31;
  88 #define SET_FP_COND(num,env)     do { ((env).fcr31) |= ((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  89 #define CLEAR_FP_COND(num,env)   do { ((env).fcr31) &= ~((num) ? (1 << ((num) + 24)) : (1 << 23)); } while(0)
  90 #define GET_FP_COND(env)         ((((env).fcr31 >> 24) & 0xfe) | (((env).fcr31 >> 23) & 0x1))
  91 #define GET_FP_CAUSE(reg)        (((reg) >> 12) & 0x3f)
  92 #define GET_FP_ENABLE(reg)       (((reg) >>  7) & 0x1f)
  93 #define GET_FP_FLAGS(reg)        (((reg) >>  2) & 0x1f)
  94 #define SET_FP_CAUSE(reg,v)      do { (reg) = ((reg) & ~(0x3f << 12)) | ((v & 0x3f) << 12); } while(0)
  95 #define SET_FP_ENABLE(reg,v)     do { (reg) = ((reg) & ~(0x1f <<  7)) | ((v & 0x1f) << 7); } while(0)
  96 #define SET_FP_FLAGS(reg,v)      do { (reg) = ((reg) & ~(0x1f <<  2)) | ((v & 0x1f) << 2); } while(0)
  97 #define UPDATE_FP_FLAGS(reg,v)   do { (reg) |= ((v & 0x1f) << 2); } while(0)
  98 #define FP_INEXACT        1
  99 #define FP_UNDERFLOW      2
 100 #define FP_OVERFLOW       4
 101 #define FP_DIV0           8
 102 #define FP_INVALID        16
 103 #define FP_UNIMPLEMENTED  32
 104 };
 105
 106 #define NB_MMU_MODES 3
 107
 108 typedef struct CPUMIPSMVPContext CPUMIPSMVPContext;
 109 struct CPUMIPSMVPContext {
 110     int32_t CP0_MVPControl;
 111 #define CP0MVPCo_CPA    3
 112 #define CP0MVPCo_STLB   2
 113 #define CP0MVPCo_VPC    1
 114 #define CP0MVPCo_EVP    0
 115     int32_t CP0_MVPConf0;
 116 #define CP0MVPC0_M      31
 117 #define CP0MVPC0_TLBS   29
 118 #define CP0MVPC0_GS     28
 119 #define CP0MVPC0_PCP    27
 120 #define CP0MVPC0_PTLBE  16
 121 #define CP0MVPC0_TCA    15
 122 #define CP0MVPC0_PVPE   10
 123 #define CP0MVPC0_PTC    0
 124     int32_t CP0_MVPConf1;
 125 #define CP0MVPC1_CIM    31
 126 #define CP0MVPC1_CIF    30
 127 #define CP0MVPC1_PCX    20
 128 #define CP0MVPC1_PCP2   10
 129 #define CP0MVPC1_PCP1   0
 130 };
 131
 132 typedef struct mips_def_t mips_def_t;
 133
 134 #define MIPS_SHADOW_SET_MAX 16
 135 #define MIPS_TC_MAX 5
 136 #define MIPS_FPU_MAX 1
 137 #define MIPS_DSP_ACC 4
 138
 139 typedef struct TCState TCState;
 140 struct TCState {
 141     target_ulong gpr[32];
 142     target_ulong PC;
 143     target_ulong HI[MIPS_DSP_ACC];
 144     target_ulong LO[MIPS_DSP_ACC];
 145     target_ulong ACX[MIPS_DSP_ACC];
 146     target_ulong DSPControl;
 147     int32_t CP0_TCStatus;
 148 #define CP0TCSt_TCU3    31
 149 #define CP0TCSt_TCU2    30
 150 #define CP0TCSt_TCU1    29
 151 #define CP0TCSt_TCU0    28
 152 #define CP0TCSt_TMX     27
 153 #define CP0TCSt_RNST    23
 154 #define CP0TCSt_TDS     21
 155 #define CP0TCSt_DT      20
 156 #define CP0TCSt_DA      15
 157 #define CP0TCSt_A       13
 158 #define CP0TCSt_TKSU    11
 159 #define CP0TCSt_IXMT    10
 160 #define CP0TCSt_TASID   0
 161     int32_t CP0_TCBind;
 162 #define CP0TCBd_CurTC   21
 163 #define CP0TCBd_TBE     17
 164 #define CP0TCBd_CurVPE  0
 165     target_ulong CP0_TCHalt;
 166     target_ulong CP0_TCContext;
 167     target_ulong CP0_TCSchedule;
 168     target_ulong CP0_TCScheFBack;
 169     int32_t CP0_Debug_tcstatus;
 170 };
 171
 172 typedef struct CPUMIPSState CPUMIPSState;
 173 struct CPUMIPSState {
 174     TCState active_tc;
 175     CPUMIPSFPUContext active_fpu;
 176
 177     uint32_t current_tc;
 178     uint32_t current_fpu;
 179
 180     uint32_t SEGBITS;
 181     uint32_t PABITS;
 182     target_ulong SEGMask;
 183     target_ulong PAMask;
 184
 185     int32_t CP0_Index;
 186     /* CP0_MVP* are per MVP registers. */
 187     int32_t CP0_Random;
 188     int32_t CP0_VPEControl;
 189 #define CP0VPECo_YSI    21
 190 #define CP0VPECo_GSI    20
 191 #define CP0VPECo_EXCPT  16
 192 #define CP0VPECo_TE     15
 193 #define CP0VPECo_TargTC 0
 194     int32_t CP0_VPEConf0;
 195 #define CP0VPEC0_M      31
 196 #define CP0VPEC0_XTC    21
 197 #define CP0VPEC0_TCS    19
 198 #define CP0VPEC0_SCS    18
 199 #define CP0VPEC0_DSC    17
 200 #define CP0VPEC0_ICS    16
 201 #define CP0VPEC0_MVP    1
 202 #define CP0VPEC0_VPA    0
 203     int32_t CP0_VPEConf1;
 204 #define CP0VPEC1_NCX    20
 205 #define CP0VPEC1_NCP2   10
 206 #define CP0VPEC1_NCP1   0
 207     target_ulong CP0_YQMask;
 208     target_ulong CP0_VPESchedule;
 209     target_ulong CP0_VPEScheFBack;
 210     int32_t CP0_VPEOpt;
 211 #define CP0VPEOpt_IWX7  15
 212 #define CP0VPEOpt_IWX6  14
 213 #define CP0VPEOpt_IWX5  13
 214 #define CP0VPEOpt_IWX4  12
 215 #define CP0VPEOpt_IWX3  11
 216 #define CP0VPEOpt_IWX2  10
 217 #define CP0VPEOpt_IWX1  9
 218 #define CP0VPEOpt_IWX0  8
 219 #define CP0VPEOpt_DWX7  7
 220 #define CP0VPEOpt_DWX6  6
 221 #define CP0VPEOpt_DWX5  5
 222 #define CP0VPEOpt_DWX4  4
 223 #define CP0VPEOpt_DWX3  3
 224 #define CP0VPEOpt_DWX2  2
 225 #define CP0VPEOpt_DWX1  1
 226 #define CP0VPEOpt_DWX0  0
 227     target_ulong CP0_EntryLo0;
 228     target_ulong CP0_EntryLo1;
 229     target_ulong CP0_Context;
 230     int32_t CP0_PageMask;
 231     int32_t CP0_PageGrain;
 232     int32_t CP0_Wired;
 233     int32_t CP0_SRSConf0_rw_bitmask;
 234     int32_t CP0_SRSConf0;
 235 #define CP0SRSC0_M      31
 236 #define CP0SRSC0_SRS3   20
 237 #define CP0SRSC0_SRS2   10
 238 #define CP0SRSC0_SRS1   0
 239     int32_t CP0_SRSConf1_rw_bitmask;
 240     int32_t CP0_SRSConf1;
 241 #define CP0SRSC1_M      31
 242 #define CP0SRSC1_SRS6   20
 243 #define CP0SRSC1_SRS5   10
 244 #define CP0SRSC1_SRS4   0
 245     int32_t CP0_SRSConf2_rw_bitmask;
 246     int32_t CP0_SRSConf2;
 247 #define CP0SRSC2_M      31
 248 #define CP0SRSC2_SRS9   20
 249 #define CP0SRSC2_SRS8   10
 250 #define CP0SRSC2_SRS7   0
 251     int32_t CP0_SRSConf3_rw_bitmask;
 252     int32_t CP0_SRSConf3;
 253 #define CP0SRSC3_M      31
 254 #define CP0SRSC3_SRS12  20
 255 #define CP0SRSC3_SRS11  10
 256 #define CP0SRSC3_SRS10  0
 257     int32_t CP0_SRSConf4_rw_bitmask;
 258     int32_t CP0_SRSConf4;
 259 #define CP0SRSC4_SRS15  20
 260 #define CP0SRSC4_SRS14  10
 261 #define CP0SRSC4_SRS13  0
 262     int32_t CP0_HWREna;
 263     target_ulong CP0_BadVAddr;
 264     int32_t CP0_Count;
 265     target_ulong CP0_EntryHi;
 266     int32_t CP0_Compare;
 267     int32_t CP0_Status;
 268 #define CP0St_CU3   31
 269 #define CP0St_CU2   30
 270 #define CP0St_CU1   29
 271 #define CP0St_CU0   28
 272 #define CP0St_RP    27
 273 #define CP0St_FR    26
 274 #define CP0St_RE    25
 275 #define CP0St_MX    24
 276 #define CP0St_PX    23
 277 #define CP0St_BEV   22
 278 #define CP0St_TS    21
 279 #define CP0St_SR    20
 280 #define CP0St_NMI   19
 281 #define CP0St_IM    8
 282 #define CP0St_KX    7
 283 #define CP0St_SX    6
 284 #define CP0St_UX    5
 285 #define CP0St_KSU   3
 286 #define CP0St_ERL   2
 287 #define CP0St_EXL   1
 288 #define CP0St_IE    0
 289     int32_t CP0_IntCtl;
 290 #define CP0IntCtl_IPTI 29
 291 #define CP0IntCtl_IPPC1 26
 292 #define CP0IntCtl_VS 5
 293     int32_t CP0_SRSCtl;
 294 #define CP0SRSCtl_HSS 26
 295 #define CP0SRSCtl_EICSS 18
 296 #define CP0SRSCtl_ESS 12
 297 #define CP0SRSCtl_PSS 6
 298 #define CP0SRSCtl_CSS 0
 299     int32_t CP0_SRSMap;
 300 #define CP0SRSMap_SSV7 28
 301 #define CP0SRSMap_SSV6 24
 302 #define CP0SRSMap_SSV5 20
 303 #define CP0SRSMap_SSV4 16
 304 #define CP0SRSMap_SSV3 12
 305 #define CP0SRSMap_SSV2 8
 306 #define CP0SRSMap_SSV1 4
 307 #define CP0SRSMap_SSV0 0
 308     int32_t CP0_Cause;
 309 #define CP0Ca_BD   31
 310 #define CP0Ca_TI   30
 311 #define CP0Ca_CE   28
 312 #define CP0Ca_DC   27
 313 #define CP0Ca_PCI  26
 314 #define CP0Ca_IV   23
 315 #define CP0Ca_WP   22
 316 #define CP0Ca_IP    8
 317 #define CP0Ca_IP_mask 0x0000FF00
 318 #define CP0Ca_EC    2
 319     target_ulong CP0_EPC;
 320     int32_t CP0_PRid;
 321     int32_t CP0_EBase;
 322     int32_t CP0_Config0;
 323 #define CP0C0_M    31
 324 #define CP0C0_K23  28
 325 #define CP0C0_KU   25
 326 #define CP0C0_MDU  20
 327 #define CP0C0_MM   17
 328 #define CP0C0_BM   16
 329 #define CP0C0_BE   15
 330 #define CP0C0_AT   13
 331 #define CP0C0_AR   10
 332 #define CP0C0_MT   7
 333 #define CP0C0_VI   3
 334 #define CP0C0_K0   0
 335     int32_t CP0_Config1;
 336 #define CP0C1_M    31
 337 #define CP0C1_MMU  25
 338 #define CP0C1_IS   22
 339 #define CP0C1_IL   19
 340 #define CP0C1_IA   16
 341 #define CP0C1_DS   13
 342 #define CP0C1_DL   10
 343 #define CP0C1_DA   7
 344 #define CP0C1_C2   6
 345 #define CP0C1_MD   5
 346 #define CP0C1_PC   4
 347 #define CP0C1_WR   3
 348 #define CP0C1_CA   2
 349 #define CP0C1_EP   1
 350 #define CP0C1_FP   0
 351     int32_t CP0_Config2;
 352 #define CP0C2_M    31
 353 #define CP0C2_TU   28
 354 #define CP0C2_TS   24
 355 #define CP0C2_TL   20
 356 #define CP0C2_TA   16
 357 #define CP0C2_SU   12
 358 #define CP0C2_SS   8
 359 #define CP0C2_SL   4
 360 #define CP0C2_SA   0
 361     int32_t CP0_Config3;
 362 #define CP0C3_M    31
 363 #define CP0C3_ISA_ON_EXC 16
 364 #define CP0C3_DSPP 10
 365 #define CP0C3_LPA  7
 366 #define CP0C3_VEIC 6
 367 #define CP0C3_VInt 5
 368 #define CP0C3_SP   4
 369 #define CP0C3_MT   2
 370 #define CP0C3_SM   1
 371 #define CP0C3_TL   0
 372     uint32_t CP0_Config4;
 373     uint32_t CP0_Config4_rw_bitmask;
 374 #define CP0C4_M    31
 375     uint32_t CP0_Config5;
 376     uint32_t CP0_Config5_rw_bitmask;
 377 #define CP0C5_M          31
 378 #define CP0C5_K          30
 379 #define CP0C5_CV         29
 380 #define CP0C5_EVA        28
 381 #define CP0C5_MSAEn      27
 382 #define CP0C5_UFR        2
 383 #define CP0C5_NFExists   0
 384     int32_t CP0_Config6;
 385     int32_t CP0_Config7;
 386     /* XXX: Maybe make LLAddr per-TC? */
 387     target_ulong lladdr;
 388     target_ulong llval;
 389     target_ulong llnewval;
 390     target_ulong llreg;
 391     target_ulong CP0_LLAddr_rw_bitmask;
 392     int CP0_LLAddr_shift;
 393     target_ulong CP0_WatchLo[8];
 394     int32_t CP0_WatchHi[8];
 395     target_ulong CP0_XContext;
 396     int32_t CP0_Framemask;
 397     int32_t CP0_Debug;
 398 #define CP0DB_DBD  31
 399 #define CP0DB_DM   30
 400 #define CP0DB_LSNM 28
 401 #define CP0DB_Doze 27
 402 #define CP0DB_Halt 26
 403 #define CP0DB_CNT  25
 404 #define CP0DB_IBEP 24
 405 #define CP0DB_DBEP 21
 406 #define CP0DB_IEXI 20
 407 #define CP0DB_VER  15
 408 #define CP0DB_DEC  10
 409 #define CP0DB_SSt  8
 410 #define CP0DB_DINT 5
 411 #define CP0DB_DIB  4
 412 #define CP0DB_DDBS 3
 413 #define CP0DB_DDBL 2
 414 #define CP0DB_DBp  1
 415 #define CP0DB_DSS  0
 416     target_ulong CP0_DEPC;
 417     int32_t CP0_Performance0;
 418     int32_t CP0_TagLo;
 419     int32_t CP0_DataLo;
 420     int32_t CP0_TagHi;
 421     int32_t CP0_DataHi;
 422     target_ulong CP0_ErrorEPC;
 423     int32_t CP0_DESAVE;
 424     /* We waste some space so we can handle shadow registers like TCs. */
 425     TCState tcs[MIPS_SHADOW_SET_MAX];
 426     CPUMIPSFPUContext fpus[MIPS_FPU_MAX];
 427     /* QEMU */
 428     int error_code;
 429     uint32_t hflags;    /* CPU State */
 430     /* TMASK defines different execution modes */
 431 #define MIPS_HFLAG_TMASK  0xC07FF
 432 #define MIPS_HFLAG_MODE   0x00007 /* execution modes                    */
 433     /* The KSU flags must be the lowest bits in hflags. The flag order
 434        must be the same as defined for CP0 Status. This allows to use
 435        the bits as the value of mmu_idx. */
 436 #define MIPS_HFLAG_KSU    0x00003 /* kernel/supervisor/user mode mask   */
 437 #define MIPS_HFLAG_UM     0x00002 /* user mode flag                     */
 438 #define MIPS_HFLAG_SM     0x00001 /* supervisor mode flag               */
 439 #define MIPS_HFLAG_KM     0x00000 /* kernel mode flag                   */
 440 #define MIPS_HFLAG_DM     0x00004 /* Debug mode                         */
 441 #define MIPS_HFLAG_64     0x00008 /* 64-bit instructions enabled        */
 442 #define MIPS_HFLAG_CP0    0x00010 /* CP0 enabled                        */
 443 #define MIPS_HFLAG_FPU    0x00020 /* FPU enabled                        */
 444 #define MIPS_HFLAG_F64    0x00040 /* 64-bit FPU enabled                 */
 445     /* True if the MIPS IV COP1X instructions can be used.  This also
 446        controls the non-COP1X instructions RECIP.S, RECIP.D, RSQRT.S
 447        and RSQRT.D.  */
 448 #define MIPS_HFLAG_COP1X  0x00080 /* COP1X instructions enabled         */
 449 #define MIPS_HFLAG_RE     0x00100 /* Reversed endianness                */
 450 #define MIPS_HFLAG_UX     0x00200 /* 64-bit user mode                   */
 451 #define MIPS_HFLAG_M16    0x00400 /* MIPS16 mode flag                   */
 452 #define MIPS_HFLAG_M16_SHIFT 10
 453     /* If translation is interrupted between the branch instruction and
 454      * the delay slot, record what type of branch it is so that we can
 455      * resume translation properly.  It might be possible to reduce
 456      * this from three bits to two.  */
 457 #define MIPS_HFLAG_BMASK_BASE  0x03800
 458 #define MIPS_HFLAG_B      0x00800 /* Unconditional branch               */
 459 #define MIPS_HFLAG_BC     0x01000 /* Conditional branch                 */
 460 #define MIPS_HFLAG_BL     0x01800 /* Likely branch                      */
 461 #define MIPS_HFLAG_BR     0x02000 /* branch to register (can't link TB) */
 462     /* Extra flags about the current pending branch.  */
 463 #define MIPS_HFLAG_BMASK_EXT 0x3C000
 464 #define MIPS_HFLAG_B16    0x04000 /* branch instruction was 16 bits     */
 465 #define MIPS_HFLAG_BDS16  0x08000 /* branch requires 16-bit delay slot  */
 466 #define MIPS_HFLAG_BDS32  0x10000 /* branch requires 32-bit delay slot  */
 467 #define MIPS_HFLAG_BX     0x20000 /* branch exchanges execution mode    */
 468 #define MIPS_HFLAG_BMASK  (MIPS_HFLAG_BMASK_BASE | MIPS_HFLAG_BMASK_EXT)
 469     /* MIPS DSP resources access. */
 470 #define MIPS_HFLAG_DSP   0x40000  /* Enable access to MIPS DSP resources. */
 471 #define MIPS_HFLAG_DSPR2 0x80000  /* Enable access to MIPS DSPR2 resources. */
 472     target_ulong btarget;        /* Jump / branch target               */
 473     target_ulong bcond;          /* Branch condition (if needed)       */
 474
 475     int SYNCI_Step; /* Address step size for SYNCI */
 476     int CCRes; /* Cycle count resolution/divisor */
 477     uint32_t CP0_Status_rw_bitmask; /* Read/write bits in CP0_Status */
 478     uint32_t CP0_TCStatus_rw_bitmask; /* Read/write bits in CP0_TCStatus */
 479     int insn_flags; /* Supported instruction set */
 480
 481     target_ulong tls_value; /* For usermode emulation */
 482
 483     CPU_COMMON
 484
 485     /* Fields from here on are preserved across CPU reset. */
 486     CPUMIPSMVPContext *mvp;
 487 #if !defined(CONFIG_USER_ONLY)
 488     CPUMIPSTLBContext *tlb;
 489 #endif
 490
 491     const mips_def_t *cpu_model;
 492     void *irq[8];
 493     QEMUTimer *timer; /* Internal timer */
 494 };
 495
 496 #include "cpu-qom.h"
 497
 498 #if !defined(CONFIG_USER_ONLY)
 499 int no_mmu_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
 500                         target_ulong address, int rw, int access_type);
 501 int fixed_mmu_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
 502                            target_ulong address, int rw, int access_type);
 503 int r4k_map_address (CPUMIPSState *env, hwaddr *physical, int *prot,
 504                      target_ulong address, int rw, int access_type);
 505 void r4k_helper_tlbwi(CPUMIPSState *env);
 506 void r4k_helper_tlbwr(CPUMIPSState *env);
 507 void r4k_helper_tlbp(CPUMIPSState *env);
 508 void r4k_helper_tlbr(CPUMIPSState *env);
 509
 510 void mips_cpu_unassigned_access(CPUState *cpu, hwaddr addr,
 511                                 bool is_write, bool is_exec, int unused,
 512                                 unsigned size);
 513 #endif
 514
 515 void mips_cpu_list (FILE *f, fprintf_function cpu_fprintf);
 516
 517 #define cpu_exec cpu_mips_exec
 518 #define cpu_gen_code cpu_mips_gen_code
 519 #define cpu_signal_handler cpu_mips_signal_handler
 520 #define cpu_list mips_cpu_list
 521
 522 extern void cpu_wrdsp(uint32_t rs, uint32_t mask_num, CPUMIPSState *env);
 523 extern uint32_t cpu_rddsp(uint32_t mask_num, CPUMIPSState *env);
 524
 525 #define CPU_SAVE_VERSION 3
 526
 527 /* MMU modes definitions. We carefully match the indices with our
 528    hflags layout. */
 529 #define MMU_MODE0_SUFFIX _kernel
 530 #define MMU_MODE1_SUFFIX _super
 531 #define MMU_MODE2_SUFFIX _user
 532 #define MMU_USER_IDX 2
 533 static inline int cpu_mmu_index (CPUMIPSState *env)
 534 {
 535     return env->hflags & MIPS_HFLAG_KSU;
 536 }
 537
 538 static inline int cpu_mips_hw_interrupts_pending(CPUMIPSState *env)
 539 {
 540     int32_t pending;
 541     int32_t status;
 542     int r;
 543
 544     if (!(env->CP0_Status & (1 << CP0St_IE)) ||
 545         (env->CP0_Status & (1 << CP0St_EXL)) ||
 546         (env->CP0_Status & (1 << CP0St_ERL)) ||
 547         /* Note that the TCStatus IXMT field is initialized to zero,
 548            and only MT capable cores can set it to one. So we don't
 549            need to check for MT capabilities here.  */
 550         (env->active_tc.CP0_TCStatus & (1 << CP0TCSt_IXMT)) ||
 551         (env->hflags & MIPS_HFLAG_DM)) {
 552         /* Interrupts are disabled */
 553         return 0;
 554     }
 555
 556     pending = env->CP0_Cause & CP0Ca_IP_mask;
 557     status = env->CP0_Status & CP0Ca_IP_mask;
 558
 559     if (env->CP0_Config3 & (1 << CP0C3_VEIC)) {
 560         /* A MIPS configured with a vectorizing external interrupt controller
 561            will feed a vector into the Cause pending lines. The core treats
 562            the status lines as a vector level, not as indiviual masks.  */
 563         r = pending > status;
 564     } else {
 565         /* A MIPS configured with compatibility or VInt (Vectored Interrupts)
 566            treats the pending lines as individual interrupt lines, the status
 567            lines are individual masks.  */
 568         r = pending & status;
 569     }
 570     return r;
 571 }
 572
 573 #include "exec/cpu-all.h"
 574
 575 /* Memory access type :
 576  * may be needed for precise access rights control and precise exceptions.
 577  */
 578 enum {
 579     /* 1 bit to define user level / supervisor access */
 580     ACCESS_USER  = 0x00,
 581     ACCESS_SUPER = 0x01,
 582     /* 1 bit to indicate direction */
 583     ACCESS_STORE = 0x02,
 584     /* Type of instruction that generated the access */
 585     ACCESS_CODE  = 0x10, /* Code fetch access                */
 586     ACCESS_INT   = 0x20, /* Integer load/store access        */
 587     ACCESS_FLOAT = 0x30, /* floating point load/store access */
 588 };
 589
 590 /* Exceptions */
 591 enum {
 592     EXCP_NONE          = -1,
 593     EXCP_RESET         = 0,
 594     EXCP_SRESET,
 595     EXCP_DSS,
 596     EXCP_DINT,
 597     EXCP_DDBL,
 598     EXCP_DDBS,
 599     EXCP_NMI,
 600     EXCP_MCHECK,
 601     EXCP_EXT_INTERRUPT, /* 8 */
 602     EXCP_DFWATCH,
 603     EXCP_DIB,
 604     EXCP_IWATCH,
 605     EXCP_AdEL,
 606     EXCP_AdES,
 607     EXCP_TLBF,
 608     EXCP_IBE,
 609     EXCP_DBp, /* 16 */
 610     EXCP_SYSCALL,
 611     EXCP_BREAK,
 612     EXCP_CpU,
 613     EXCP_RI,
 614     EXCP_OVERFLOW,
 615     EXCP_TRAP,
 616     EXCP_FPE,
 617     EXCP_DWATCH, /* 24 */
 618     EXCP_LTLBL,
 619     EXCP_TLBL,
 620     EXCP_TLBS,
 621     EXCP_DBE,
 622     EXCP_THREAD,
 623     EXCP_MDMX,
 624     EXCP_C2E,
 625     EXCP_CACHE, /* 32 */
 626     EXCP_DSPDIS,
 627
 628     EXCP_LAST = EXCP_DSPDIS,
 629 };
 630 /* Dummy exception for conditional stores.  */
 631 #define EXCP_SC 0x100
 632
 633 /*
 634  * This is an interrnally generated WAKE request line.
 635  * It is driven by the CPU itself. Raised when the MT
 636  * block wants to wake a VPE from an inactive state and
 637  * cleared when VPE goes from active to inactive.
 638  */
 639 #define CPU_INTERRUPT_WAKE CPU_INTERRUPT_TGT_INT_0
 640
 641 int cpu_mips_exec(CPUMIPSState *s);
 642 void mips_tcg_init(void);
 643 MIPSCPU *cpu_mips_init(const char *cpu_model);
 644 int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc);
 645
 646 static inline CPUMIPSState *cpu_init(const char *cpu_model)
 647 {
 648     MIPSCPU *cpu = cpu_mips_init(cpu_model);
 649     if (cpu == NULL) {
 650         return NULL;
 651     }
 652     return &cpu->env;
 653 }
 654
 655 /* TODO QOM'ify CPU reset and remove */
 656 void cpu_state_reset(CPUMIPSState *s);
 657
 658 /* mips_timer.c */
 659 uint32_t cpu_mips_get_random (CPUMIPSState *env);
 660 uint32_t cpu_mips_get_count (CPUMIPSState *env);
 661 void cpu_mips_store_count (CPUMIPSState *env, uint32_t value);
 662 void cpu_mips_store_compare (CPUMIPSState *env, uint32_t value);
 663 void cpu_mips_start_count(CPUMIPSState *env);
 664 void cpu_mips_stop_count(CPUMIPSState *env);
 665
 666 /* mips_int.c */
 667 void cpu_mips_soft_irq(CPUMIPSState *env, int irq, int level);
 668
 669 /* helper.c */
 670 int mips_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
 671                               int mmu_idx);
 672 #if !defined(CONFIG_USER_ONLY)
 673 void r4k_invalidate_tlb (CPUMIPSState *env, int idx, int use_extra);
 674 hwaddr cpu_mips_translate_address (CPUMIPSState *env, target_ulong address,
 675                                                int rw);
 676 #endif
 677 target_ulong exception_resume_pc (CPUMIPSState *env);
 678
 679 static inline void cpu_get_tb_cpu_state(CPUMIPSState *env, target_ulong *pc,
 680                                         target_ulong *cs_base, int *flags)
 681 {
 682     *pc = env->active_tc.PC;
 683     *cs_base = 0;
 684     *flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK);
 685 }
 686
 687 static inline int mips_vpe_active(CPUMIPSState *env)
 688 {
 689     int active = 1;
 690
 691     /* Check that the VPE is enabled.  */
 692     if (!(env->mvp->CP0_MVPControl & (1 << CP0MVPCo_EVP))) {
 693         active = 0;
 694     }
 695     /* Check that the VPE is activated.  */
 696     if (!(env->CP0_VPEConf0 & (1 << CP0VPEC0_VPA))) {
 697         active = 0;
 698     }
 699
 700     /* Now verify that there are active thread contexts in the VPE.
 701
 702        This assumes the CPU model will internally reschedule threads
 703        if the active one goes to sleep. If there are no threads available
 704        the active one will be in a sleeping state, and we can turn off
 705        the entire VPE.  */
 706     if (!(env->active_tc.CP0_TCStatus & (1 << CP0TCSt_A))) {
 707         /* TC is not activated.  */
 708         active = 0;
 709     }
 710     if (env->active_tc.CP0_TCHalt & 1) {
 711         /* TC is in halt state.  */
 712         active = 0;
 713     }
 714
 715     return active;
 716 }
 717
 718 #include "exec/exec-all.h"
 719
 720 static inline void compute_hflags(CPUMIPSState *env)
 721 {
 722     env->hflags &= ~(MIPS_HFLAG_COP1X | MIPS_HFLAG_64 | MIPS_HFLAG_CP0 |
 723                      MIPS_HFLAG_F64 | MIPS_HFLAG_FPU | MIPS_HFLAG_KSU |
 724                      MIPS_HFLAG_UX | MIPS_HFLAG_DSP | MIPS_HFLAG_DSPR2);
 725     if (!(env->CP0_Status & (1 << CP0St_EXL)) &&
 726         !(env->CP0_Status & (1 << CP0St_ERL)) &&
 727         !(env->hflags & MIPS_HFLAG_DM)) {
 728         env->hflags |= (env->CP0_Status >> CP0St_KSU) & MIPS_HFLAG_KSU;
 729     }
 730 #if defined(TARGET_MIPS64)
 731     if (((env->hflags & MIPS_HFLAG_KSU) != MIPS_HFLAG_UM) ||
 732         (env->CP0_Status & (1 << CP0St_PX)) ||
 733         (env->CP0_Status & (1 << CP0St_UX))) {
 734         env->hflags |= MIPS_HFLAG_64;
 735     }
 736     if (env->CP0_Status & (1 << CP0St_UX)) {
 737         env->hflags |= MIPS_HFLAG_UX;
 738     }
 739 #endif
 740     if ((env->CP0_Status & (1 << CP0St_CU0)) ||
 741         !(env->hflags & MIPS_HFLAG_KSU)) {
 742         env->hflags |= MIPS_HFLAG_CP0;
 743     }
 744     if (env->CP0_Status & (1 << CP0St_CU1)) {
 745         env->hflags |= MIPS_HFLAG_FPU;
 746     }
 747     if (env->CP0_Status & (1 << CP0St_FR)) {
 748         env->hflags |= MIPS_HFLAG_F64;
 749     }
 750     if (env->insn_flags & ASE_DSPR2) {
 751         /* Enables access MIPS DSP resources, now our cpu is DSP ASER2,
 752            so enable to access DSPR2 resources. */
 753         if (env->CP0_Status & (1 << CP0St_MX)) {
 754             env->hflags |= MIPS_HFLAG_DSP | MIPS_HFLAG_DSPR2;
 755         }
 756
 757     } else if (env->insn_flags & ASE_DSP) {
 758         /* Enables access MIPS DSP resources, now our cpu is DSP ASE,
 759            so enable to access DSP resources. */
 760         if (env->CP0_Status & (1 << CP0St_MX)) {
 761             env->hflags |= MIPS_HFLAG_DSP;
 762         }
 763
 764     }
 765     if (env->insn_flags & ISA_MIPS32R2) {
 766         if (env->active_fpu.fcr0 & (1 << FCR0_F64)) {
 767             env->hflags |= MIPS_HFLAG_COP1X;
 768         }
 769     } else if (env->insn_flags & ISA_MIPS32) {
 770         if (env->hflags & MIPS_HFLAG_64) {
 771             env->hflags |= MIPS_HFLAG_COP1X;
 772         }
 773     } else if (env->insn_flags & ISA_MIPS4) {
 774         /* All supported MIPS IV CPUs use the XX (CU3) to enable
 775            and disable the MIPS IV extensions to the MIPS III ISA.
 776            Some other MIPS IV CPUs ignore the bit, so the check here
 777            would be too restrictive for them.  */
 778         if (env->CP0_Status & (1U << CP0St_CU3)) {
 779             env->hflags |= MIPS_HFLAG_COP1X;
 780         }
 781     }
 782 }
 783
 784 #endif /* !defined (__MIPS_CPU_H__) */