target-sparc/cpu.h

   1 #ifndef CPU_SPARC_H
   2 #define CPU_SPARC_H
   3
   4 #include "config.h"
   5
   6 #if !defined(TARGET_SPARC64)
   7 #define TARGET_LONG_BITS 32
   8 #define TARGET_FPREGS 32
   9 #define TARGET_PAGE_BITS 12 /* 4k */
  10 #else
  11 #define TARGET_LONG_BITS 64
  12 #define TARGET_FPREGS 64
  13 #define TARGET_PAGE_BITS 13 /* 8k */
  14 #endif
  15
  16 #define TARGET_PHYS_ADDR_BITS 64
  17
  18 #include "cpu-defs.h"
  19
  20 #include "softfloat.h"
  21
  22 #define TARGET_HAS_ICE 1
  23
  24 #if !defined(TARGET_SPARC64)
  25 #define ELF_MACHINE     EM_SPARC
  26 #else
  27 #define ELF_MACHINE     EM_SPARCV9
  28 #endif
  29
  30 /*#define EXCP_INTERRUPT 0x100*/
  31
  32 /* trap definitions */
  33 #ifndef TARGET_SPARC64
  34 #define TT_TFAULT   0x01
  35 #define TT_ILL_INSN 0x02
  36 #define TT_PRIV_INSN 0x03
  37 #define TT_NFPU_INSN 0x04
  38 #define TT_WIN_OVF  0x05
  39 #define TT_WIN_UNF  0x06
  40 #define TT_UNALIGNED 0x07
  41 #define TT_FP_EXCP  0x08
  42 #define TT_DFAULT   0x09
  43 #define TT_TOVF     0x0a
  44 #define TT_EXTINT   0x10
  45 #define TT_CODE_ACCESS 0x21
  46 #define TT_UNIMP_FLUSH 0x25
  47 #define TT_DATA_ACCESS 0x29
  48 #define TT_DIV_ZERO 0x2a
  49 #define TT_NCP_INSN 0x24
  50 #define TT_TRAP     0x80
  51 #else
  52 #define TT_TFAULT   0x08
  53 #define TT_CODE_ACCESS 0x0a
  54 #define TT_ILL_INSN 0x10
  55 #define TT_UNIMP_FLUSH TT_ILL_INSN
  56 #define TT_PRIV_INSN 0x11
  57 #define TT_NFPU_INSN 0x20
  58 #define TT_FP_EXCP  0x21
  59 #define TT_TOVF     0x23
  60 #define TT_CLRWIN   0x24
  61 #define TT_DIV_ZERO 0x28
  62 #define TT_DFAULT   0x30
  63 #define TT_DATA_ACCESS 0x32
  64 #define TT_UNALIGNED 0x34
  65 #define TT_PRIV_ACT 0x37
  66 #define TT_EXTINT   0x40
  67 #define TT_IVEC     0x60
  68 #define TT_TMISS    0x64
  69 #define TT_DMISS    0x68
  70 #define TT_DPROT    0x6c
  71 #define TT_SPILL    0x80
  72 #define TT_FILL     0xc0
  73 #define TT_WOTHER   0x10
  74 #define TT_TRAP     0x100
  75 #endif
  76
  77 #define PSR_NEG_SHIFT 23
  78 #define PSR_NEG   (1 << PSR_NEG_SHIFT)
  79 #define PSR_ZERO_SHIFT 22
  80 #define PSR_ZERO  (1 << PSR_ZERO_SHIFT)
  81 #define PSR_OVF_SHIFT 21
  82 #define PSR_OVF   (1 << PSR_OVF_SHIFT)
  83 #define PSR_CARRY_SHIFT 20
  84 #define PSR_CARRY (1 << PSR_CARRY_SHIFT)
  85 #define PSR_ICC   (PSR_NEG|PSR_ZERO|PSR_OVF|PSR_CARRY)
  86 #define PSR_EF    (1<<12)
  87 #define PSR_PIL   0xf00
  88 #define PSR_S     (1<<7)
  89 #define PSR_PS    (1<<6)
  90 #define PSR_ET    (1<<5)
  91 #define PSR_CWP   0x1f
  92
  93 /* Trap base register */
  94 #define TBR_BASE_MASK 0xfffff000
  95
  96 #if defined(TARGET_SPARC64)
  97 #define PS_IG    (1<<11)
  98 #define PS_MG    (1<<10)
  99 #define PS_RMO   (1<<7)
 100 #define PS_RED   (1<<5)
 101 #define PS_PEF   (1<<4)
 102 #define PS_AM    (1<<3)
 103 #define PS_PRIV  (1<<2)
 104 #define PS_IE    (1<<1)
 105 #define PS_AG    (1<<0)
 106
 107 #define FPRS_FEF (1<<2)
 108
 109 #define HS_PRIV  (1<<2)
 110 #endif
 111
 112 /* Fcc */
 113 #define FSR_RD1        (1ULL << 31)
 114 #define FSR_RD0        (1ULL << 30)
 115 #define FSR_RD_MASK    (FSR_RD1 | FSR_RD0)
 116 #define FSR_RD_NEAREST 0
 117 #define FSR_RD_ZERO    FSR_RD0
 118 #define FSR_RD_POS     FSR_RD1
 119 #define FSR_RD_NEG     (FSR_RD1 | FSR_RD0)
 120
 121 #define FSR_NVM   (1ULL << 27)
 122 #define FSR_OFM   (1ULL << 26)
 123 #define FSR_UFM   (1ULL << 25)
 124 #define FSR_DZM   (1ULL << 24)
 125 #define FSR_NXM   (1ULL << 23)
 126 #define FSR_TEM_MASK (FSR_NVM | FSR_OFM | FSR_UFM | FSR_DZM | FSR_NXM)
 127
 128 #define FSR_NVA   (1ULL << 9)
 129 #define FSR_OFA   (1ULL << 8)
 130 #define FSR_UFA   (1ULL << 7)
 131 #define FSR_DZA   (1ULL << 6)
 132 #define FSR_NXA   (1ULL << 5)
 133 #define FSR_AEXC_MASK (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA)
 134
 135 #define FSR_NVC   (1ULL << 4)
 136 #define FSR_OFC   (1ULL << 3)
 137 #define FSR_UFC   (1ULL << 2)
 138 #define FSR_DZC   (1ULL << 1)
 139 #define FSR_NXC   (1ULL << 0)
 140 #define FSR_CEXC_MASK (FSR_NVC | FSR_OFC | FSR_UFC | FSR_DZC | FSR_NXC)
 141
 142 #define FSR_FTT2   (1ULL << 16)
 143 #define FSR_FTT1   (1ULL << 15)
 144 #define FSR_FTT0   (1ULL << 14)
 145 //gcc warns about constant overflow for ~FSR_FTT_MASK
 146 //#define FSR_FTT_MASK (FSR_FTT2 | FSR_FTT1 | FSR_FTT0)
 147 #ifdef TARGET_SPARC64
 148 #define FSR_FTT_NMASK      0xfffffffffffe3fffULL
 149 #define FSR_FTT_CEXC_NMASK 0xfffffffffffe3fe0ULL
 150 #define FSR_LDFSR_OLDMASK  0x0000003f000fc000ULL
 151 #define FSR_LDXFSR_MASK    0x0000003fcfc00fffULL
 152 #define FSR_LDXFSR_OLDMASK 0x00000000000fc000ULL
 153 #else
 154 #define FSR_FTT_NMASK      0xfffe3fffULL
 155 #define FSR_FTT_CEXC_NMASK 0xfffe3fe0ULL
 156 #define FSR_LDFSR_OLDMASK  0x000fc000ULL
 157 #endif
 158 #define FSR_LDFSR_MASK     0xcfc00fffULL
 159 #define FSR_FTT_IEEE_EXCP (1ULL << 14)
 160 #define FSR_FTT_UNIMPFPOP (3ULL << 14)
 161 #define FSR_FTT_SEQ_ERROR (4ULL << 14)
 162 #define FSR_FTT_INVAL_FPR (6ULL << 14)
 163
 164 #define FSR_FCC1_SHIFT 11
 165 #define FSR_FCC1  (1ULL << FSR_FCC1_SHIFT)
 166 #define FSR_FCC0_SHIFT 10
 167 #define FSR_FCC0  (1ULL << FSR_FCC0_SHIFT)
 168
 169 /* MMU */
 170 #define MMU_E     (1<<0)
 171 #define MMU_NF    (1<<1)
 172
 173 #define PTE_ENTRYTYPE_MASK 3
 174 #define PTE_ACCESS_MASK    0x1c
 175 #define PTE_ACCESS_SHIFT   2
 176 #define PTE_PPN_SHIFT      7
 177 #define PTE_ADDR_MASK      0xffffff00
 178
 179 #define PG_ACCESSED_BIT 5
 180 #define PG_MODIFIED_BIT 6
 181 #define PG_CACHE_BIT    7
 182
 183 #define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
 184 #define PG_MODIFIED_MASK (1 << PG_MODIFIED_BIT)
 185 #define PG_CACHE_MASK    (1 << PG_CACHE_BIT)
 186
 187 /* 3 <= NWINDOWS <= 32. */
 188 #define MIN_NWINDOWS 3
 189 #define MAX_NWINDOWS 32
 190
 191 #if !defined(TARGET_SPARC64)
 192 #define NB_MMU_MODES 2
 193 #else
 194 #define NB_MMU_MODES 3
 195 typedef struct trap_state {
 196     uint64_t tpc;
 197     uint64_t tnpc;
 198     uint64_t tstate;
 199     uint32_t tt;
 200 } trap_state;
 201 #endif
 202
 203 typedef struct sparc_def_t {
 204     const char *name;
 205     target_ulong iu_version;
 206     uint32_t fpu_version;
 207     uint32_t mmu_version;
 208     uint32_t mmu_bm;
 209     uint32_t mmu_ctpr_mask;
 210     uint32_t mmu_cxr_mask;
 211     uint32_t mmu_sfsr_mask;
 212     uint32_t mmu_trcr_mask;
 213     uint32_t mxcc_version;
 214     uint32_t features;
 215     uint32_t nwindows;
 216     uint32_t maxtl;
 217 } sparc_def_t;
 218
 219 #define CPU_FEATURE_FLOAT    (1 << 0)
 220 #define CPU_FEATURE_FLOAT128 (1 << 1)
 221 #define CPU_FEATURE_SWAP     (1 << 2)
 222 #define CPU_FEATURE_MUL      (1 << 3)
 223 #define CPU_FEATURE_DIV      (1 << 4)
 224 #define CPU_FEATURE_FLUSH    (1 << 5)
 225 #define CPU_FEATURE_FSQRT    (1 << 6)
 226 #define CPU_FEATURE_FMUL     (1 << 7)
 227 #define CPU_FEATURE_VIS1     (1 << 8)
 228 #define CPU_FEATURE_VIS2     (1 << 9)
 229 #define CPU_FEATURE_FSMULD   (1 << 10)
 230 #define CPU_FEATURE_HYPV     (1 << 11)
 231 #define CPU_FEATURE_CMT      (1 << 12)
 232 #define CPU_FEATURE_GL       (1 << 13)
 233 #ifndef TARGET_SPARC64
 234 #define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP |  \
 235                               CPU_FEATURE_MUL | CPU_FEATURE_DIV |     \
 236                               CPU_FEATURE_FLUSH | CPU_FEATURE_FSQRT | \
 237                               CPU_FEATURE_FMUL | CPU_FEATURE_FSMULD)
 238 #else
 239 #define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP |  \
 240                               CPU_FEATURE_MUL | CPU_FEATURE_DIV |     \
 241                               CPU_FEATURE_FLUSH | CPU_FEATURE_FSQRT | \
 242                               CPU_FEATURE_FMUL | CPU_FEATURE_VIS1 |   \
 243                               CPU_FEATURE_VIS2 | CPU_FEATURE_FSMULD)
 244 enum {
 245     mmu_us_12, // Ultrasparc < III (64 entry TLB)
 246     mmu_us_3,  // Ultrasparc III (512 entry TLB)
 247     mmu_us_4,  // Ultrasparc IV (several TLBs, 32 and 256MB pages)
 248     mmu_sun4v, // T1, T2
 249 };
 250 #endif
 251
 252 typedef struct CPUSPARCState {
 253     target_ulong gregs[8]; /* general registers */
 254     target_ulong *regwptr; /* pointer to current register window */
 255     target_ulong pc;       /* program counter */
 256     target_ulong npc;      /* next program counter */
 257     target_ulong y;        /* multiply/divide register */
 258
 259     /* emulator internal flags handling */
 260     target_ulong cc_src, cc_src2;
 261     target_ulong cc_dst;
 262
 263     target_ulong t0, t1; /* temporaries live across basic blocks */
 264     target_ulong cond; /* conditional branch result (XXX: save it in a
 265                           temporary register when possible) */
 266
 267     uint32_t psr;      /* processor state register */
 268     target_ulong fsr;      /* FPU state register */
 269     float32 fpr[TARGET_FPREGS];  /* floating point registers */
 270     uint32_t cwp;      /* index of current register window (extracted
 271                           from PSR) */
 272     uint32_t wim;      /* window invalid mask */
 273     target_ulong tbr;  /* trap base register */
 274     int      psrs;     /* supervisor mode (extracted from PSR) */
 275     int      psrps;    /* previous supervisor mode */
 276     int      psret;    /* enable traps */
 277     uint32_t psrpil;   /* interrupt blocking level */
 278     uint32_t pil_in;   /* incoming interrupt level bitmap */
 279     int      psref;    /* enable fpu */
 280     target_ulong version;
 281     int interrupt_index;
 282     uint32_t nwindows;
 283     /* NOTE: we allow 8 more registers to handle wrapping */
 284     target_ulong regbase[MAX_NWINDOWS * 16 + 8];
 285
 286     CPU_COMMON
 287
 288     /* MMU regs */
 289 #if defined(TARGET_SPARC64)
 290     uint64_t lsu;
 291 #define DMMU_E 0x8
 292 #define IMMU_E 0x4
 293     uint64_t immuregs[16];
 294     uint64_t dmmuregs[16];
 295     uint64_t itlb_tag[64];
 296     uint64_t itlb_tte[64];
 297     uint64_t dtlb_tag[64];
 298     uint64_t dtlb_tte[64];
 299     uint32_t mmu_version;
 300 #else
 301     uint32_t mmuregs[32];
 302     uint64_t mxccdata[4];
 303     uint64_t mxccregs[8];
 304     uint64_t mmubpregs[4];
 305     uint64_t prom_addr;
 306 #endif
 307     /* temporary float registers */
 308     float64 dt0, dt1;
 309     float128 qt0, qt1;
 310     float_status fp_status;
 311 #if defined(TARGET_SPARC64)
 312 #define MAXTL_MAX 8
 313 #define MAXTL_MASK (MAXTL_MAX - 1)
 314     trap_state *tsptr;
 315     trap_state ts[MAXTL_MAX];
 316     uint32_t xcc;               /* Extended integer condition codes */
 317     uint32_t asi;
 318     uint32_t pstate;
 319     uint32_t tl;
 320     uint32_t maxtl;
 321     uint32_t cansave, canrestore, otherwin, wstate, cleanwin;
 322     uint64_t agregs[8]; /* alternate general registers */
 323     uint64_t bgregs[8]; /* backup for normal global registers */
 324     uint64_t igregs[8]; /* interrupt general registers */
 325     uint64_t mgregs[8]; /* mmu general registers */
 326     uint64_t fprs;
 327     uint64_t tick_cmpr, stick_cmpr;
 328     void *tick, *stick;
 329     uint64_t gsr;
 330     uint32_t gl; // UA2005
 331     /* UA 2005 hyperprivileged registers */
 332     uint64_t hpstate, htstate[MAXTL_MAX], hintp, htba, hver, hstick_cmpr, ssr;
 333     void *hstick; // UA 2005
 334     uint32_t softint;
 335 #define SOFTINT_TIMER   1
 336 #define SOFTINT_STIMER  (1 << 16)
 337 #endif
 338     sparc_def_t *def;
 339 } CPUSPARCState;
 340
 341 /* helper.c */
 342 CPUSPARCState *cpu_sparc_init(const char *cpu_model);
 343 void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu);
 344 void sparc_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt,
 345                                                  ...));
 346 void cpu_lock(void);
 347 void cpu_unlock(void);
 348 int cpu_sparc_handle_mmu_fault(CPUSPARCState *env1, target_ulong address, int rw,
 349                                int mmu_idx, int is_softmmu);
 350 target_ulong mmu_probe(CPUSPARCState *env, target_ulong address, int mmulev);
 351 void dump_mmu(CPUSPARCState *env);
 352
 353 /* translate.c */
 354 void gen_intermediate_code_init(CPUSPARCState *env);
 355
 356 /* cpu-exec.c */
 357 int cpu_sparc_exec(CPUSPARCState *s);
 358
 359 #define GET_PSR(env) (env->version | (env->psr & PSR_ICC) |             \
 360                       (env->psref? PSR_EF : 0) |                        \
 361                       (env->psrpil << 8) |                              \
 362                       (env->psrs? PSR_S : 0) |                          \
 363                       (env->psrps? PSR_PS : 0) |                        \
 364                       (env->psret? PSR_ET : 0) | env->cwp)
 365
 366 #ifndef NO_CPU_IO_DEFS
 367 static inline void memcpy32(target_ulong *dst, const target_ulong *src)
 368 {
 369     dst[0] = src[0];
 370     dst[1] = src[1];
 371     dst[2] = src[2];
 372     dst[3] = src[3];
 373     dst[4] = src[4];
 374     dst[5] = src[5];
 375     dst[6] = src[6];
 376     dst[7] = src[7];
 377 }
 378
 379 static inline void cpu_set_cwp(CPUSPARCState *env1, int new_cwp)
 380 {
 381     /* put the modified wrap registers at their proper location */
 382     if (env1->cwp == env1->nwindows - 1)
 383         memcpy32(env1->regbase, env1->regbase + env1->nwindows * 16);
 384     env1->cwp = new_cwp;
 385     /* put the wrap registers at their temporary location */
 386     if (new_cwp == env1->nwindows - 1)
 387         memcpy32(env1->regbase + env1->nwindows * 16, env1->regbase);
 388     env1->regwptr = env1->regbase + (new_cwp * 16);
 389 }
 390
 391 static inline int cpu_cwp_inc(CPUSPARCState *env1, int cwp)
 392 {
 393     if (unlikely(cwp >= env1->nwindows))
 394         cwp -= env1->nwindows;
 395     return cwp;
 396 }
 397
 398 static inline int cpu_cwp_dec(CPUSPARCState *env1, int cwp)
 399 {
 400     if (unlikely(cwp < 0))
 401         cwp += env1->nwindows;
 402     return cwp;
 403 }
 404 #endif
 405
 406 #define PUT_PSR(env, val) do { int _tmp = val;                          \
 407         env->psr = _tmp & PSR_ICC;                                      \
 408         env->psref = (_tmp & PSR_EF)? 1 : 0;                            \
 409         env->psrpil = (_tmp & PSR_PIL) >> 8;                            \
 410         env->psrs = (_tmp & PSR_S)? 1 : 0;                              \
 411         env->psrps = (_tmp & PSR_PS)? 1 : 0;                            \
 412         env->psret = (_tmp & PSR_ET)? 1 : 0;                            \
 413         cpu_set_cwp(env, _tmp & PSR_CWP);                               \
 414     } while (0)
 415
 416 #ifdef TARGET_SPARC64
 417 #define GET_CCR(env) (((env->xcc >> 20) << 4) | ((env->psr & PSR_ICC) >> 20))
 418 #define PUT_CCR(env, val) do { int _tmp = val;                          \
 419         env->xcc = (_tmp >> 4) << 20;                                   \
 420         env->psr = (_tmp & 0xf) << 20;                                  \
 421     } while (0)
 422 #define GET_CWP64(env) (env->nwindows - 1 - (env)->cwp)
 423
 424 #ifndef NO_CPU_IO_DEFS
 425 static inline void PUT_CWP64(CPUSPARCState *env1, int cwp)
 426 {
 427     if (unlikely(cwp >= env1->nwindows || cwp < 0))
 428         cwp = 0;
 429     cpu_set_cwp(env1, env1->nwindows - 1 - cwp);
 430 }
 431 #endif
 432 #endif
 433
 434 /* cpu-exec.c */
 435 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
 436                           int is_asi, int size);
 437 int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
 438
 439 #define CPUState CPUSPARCState
 440 #define cpu_init cpu_sparc_init
 441 #define cpu_exec cpu_sparc_exec
 442 #define cpu_gen_code cpu_sparc_gen_code
 443 #define cpu_signal_handler cpu_sparc_signal_handler
 444 #define cpu_list sparc_cpu_list
 445
 446 #define CPU_SAVE_VERSION 5
 447
 448 /* MMU modes definitions */
 449 #define MMU_MODE0_SUFFIX _user
 450 #define MMU_MODE1_SUFFIX _kernel
 451 #ifdef TARGET_SPARC64
 452 #define MMU_MODE2_SUFFIX _hypv
 453 #endif
 454 #define MMU_USER_IDX   0
 455 #define MMU_KERNEL_IDX 1
 456 #define MMU_HYPV_IDX   2
 457
 458 static inline int cpu_mmu_index(CPUState *env1)
 459 {
 460 #if defined(CONFIG_USER_ONLY)
 461     return MMU_USER_IDX;
 462 #elif !defined(TARGET_SPARC64)
 463     return env1->psrs;
 464 #else
 465     if (!env1->psrs)
 466         return MMU_USER_IDX;
 467     else if ((env1->hpstate & HS_PRIV) == 0)
 468         return MMU_KERNEL_IDX;
 469     else
 470         return MMU_HYPV_IDX;
 471 #endif
 472 }
 473
 474 static inline int cpu_fpu_enabled(CPUState *env1)
 475 {
 476 #if defined(CONFIG_USER_ONLY)
 477     return 1;
 478 #elif !defined(TARGET_SPARC64)
 479     return env1->psref;
 480 #else
 481     return ((env1->pstate & PS_PEF) != 0) && ((env1->fprs & FPRS_FEF) != 0);
 482 #endif
 483 }
 484
 485 #if defined(CONFIG_USER_ONLY)
 486 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 487 {
 488     if (newsp)
 489         env->regwptr[22] = newsp;
 490     env->regwptr[0] = 0;
 491     /* FIXME: Do we also need to clear CF?  */
 492     /* XXXXX */
 493     printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
 494 }
 495 #endif
 496
 497 #include "cpu-all.h"
 498 #include "exec-all.h"
 499
 500 /* sum4m.c, sun4u.c */
 501 void cpu_check_irqs(CPUSPARCState *env);
 502
 503 #ifdef TARGET_SPARC64
 504 /* sun4u.c */
 505 void cpu_tick_set_count(void *opaque, uint64_t count);
 506 uint64_t cpu_tick_get_count(void *opaque);
 507 void cpu_tick_set_limit(void *opaque, uint64_t limit);
 508 #endif
 509
 510 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
 511 {
 512     env->pc = tb->pc;
 513     env->npc = tb->cs_base;
 514 }
 515
 516 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 517                                         target_ulong *cs_base, int *flags)
 518 {
 519     *pc = env->pc;
 520     *cs_base = env->npc;
 521 #ifdef TARGET_SPARC64
 522     // AM . Combined FPU enable bits . PRIV . DMMU enabled . IMMU enabled
 523     *flags = ((env->pstate & PS_AM) << 2)
 524         | (((env->pstate & PS_PEF) >> 1) | ((env->fprs & FPRS_FEF) << 2))
 525         | (env->pstate & PS_PRIV) | ((env->lsu & (DMMU_E | IMMU_E)) >> 2);
 526 #else
 527     // FPU enable . Supervisor
 528     *flags = (env->psref << 4) | env->psrs;
 529 #endif
 530 }
 531
 532 #endif