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 CPUState struct CPUSPARCState
  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 #define CC_SRC (env->cc_src)
  94 #define CC_SRC2 (env->cc_src2)
  95 #define CC_DST (env->cc_dst)
  96 #define CC_OP  (env->cc_op)
  97
  98 enum {
  99     CC_OP_DYNAMIC, /* must use dynamic code to get cc_op */
 100     CC_OP_FLAGS,   /* all cc are back in status register */
 101     CC_OP_DIV,     /* modify N, Z and V, C = 0*/
 102     CC_OP_ADD,     /* modify all flags, CC_DST = res, CC_SRC = src1 */
 103     CC_OP_ADDX,    /* modify all flags, CC_DST = res, CC_SRC = src1 */
 104     CC_OP_TADD,    /* modify all flags, CC_DST = res, CC_SRC = src1 */
 105     CC_OP_TADDTV,  /* modify all flags except V, CC_DST = res, CC_SRC = src1 */
 106     CC_OP_SUB,     /* modify all flags, CC_DST = res, CC_SRC = src1 */
 107     CC_OP_SUBX,    /* modify all flags, CC_DST = res, CC_SRC = src1 */
 108     CC_OP_TSUB,    /* modify all flags, CC_DST = res, CC_SRC = src1 */
 109     CC_OP_TSUBTV,  /* modify all flags except V, CC_DST = res, CC_SRC = src1 */
 110     CC_OP_LOGIC,   /* modify N and Z, C = V = 0, CC_DST = res */
 111     CC_OP_NB,
 112 };
 113
 114 /* Trap base register */
 115 #define TBR_BASE_MASK 0xfffff000
 116
 117 #if defined(TARGET_SPARC64)
 118 #define PS_IG    (1<<11)
 119 #define PS_MG    (1<<10)
 120 #define PS_RMO   (1<<7)
 121 #define PS_RED   (1<<5)
 122 #define PS_PEF   (1<<4)
 123 #define PS_AM    (1<<3)
 124 #define PS_PRIV  (1<<2)
 125 #define PS_IE    (1<<1)
 126 #define PS_AG    (1<<0)
 127
 128 #define FPRS_FEF (1<<2)
 129
 130 #define HS_PRIV  (1<<2)
 131 #endif
 132
 133 /* Fcc */
 134 #define FSR_RD1        (1ULL << 31)
 135 #define FSR_RD0        (1ULL << 30)
 136 #define FSR_RD_MASK    (FSR_RD1 | FSR_RD0)
 137 #define FSR_RD_NEAREST 0
 138 #define FSR_RD_ZERO    FSR_RD0
 139 #define FSR_RD_POS     FSR_RD1
 140 #define FSR_RD_NEG     (FSR_RD1 | FSR_RD0)
 141
 142 #define FSR_NVM   (1ULL << 27)
 143 #define FSR_OFM   (1ULL << 26)
 144 #define FSR_UFM   (1ULL << 25)
 145 #define FSR_DZM   (1ULL << 24)
 146 #define FSR_NXM   (1ULL << 23)
 147 #define FSR_TEM_MASK (FSR_NVM | FSR_OFM | FSR_UFM | FSR_DZM | FSR_NXM)
 148
 149 #define FSR_NVA   (1ULL << 9)
 150 #define FSR_OFA   (1ULL << 8)
 151 #define FSR_UFA   (1ULL << 7)
 152 #define FSR_DZA   (1ULL << 6)
 153 #define FSR_NXA   (1ULL << 5)
 154 #define FSR_AEXC_MASK (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA)
 155
 156 #define FSR_NVC   (1ULL << 4)
 157 #define FSR_OFC   (1ULL << 3)
 158 #define FSR_UFC   (1ULL << 2)
 159 #define FSR_DZC   (1ULL << 1)
 160 #define FSR_NXC   (1ULL << 0)
 161 #define FSR_CEXC_MASK (FSR_NVC | FSR_OFC | FSR_UFC | FSR_DZC | FSR_NXC)
 162
 163 #define FSR_FTT2   (1ULL << 16)
 164 #define FSR_FTT1   (1ULL << 15)
 165 #define FSR_FTT0   (1ULL << 14)
 166 //gcc warns about constant overflow for ~FSR_FTT_MASK
 167 //#define FSR_FTT_MASK (FSR_FTT2 | FSR_FTT1 | FSR_FTT0)
 168 #ifdef TARGET_SPARC64
 169 #define FSR_FTT_NMASK      0xfffffffffffe3fffULL
 170 #define FSR_FTT_CEXC_NMASK 0xfffffffffffe3fe0ULL
 171 #define FSR_LDFSR_OLDMASK  0x0000003f000fc000ULL
 172 #define FSR_LDXFSR_MASK    0x0000003fcfc00fffULL
 173 #define FSR_LDXFSR_OLDMASK 0x00000000000fc000ULL
 174 #else
 175 #define FSR_FTT_NMASK      0xfffe3fffULL
 176 #define FSR_FTT_CEXC_NMASK 0xfffe3fe0ULL
 177 #define FSR_LDFSR_OLDMASK  0x000fc000ULL
 178 #endif
 179 #define FSR_LDFSR_MASK     0xcfc00fffULL
 180 #define FSR_FTT_IEEE_EXCP (1ULL << 14)
 181 #define FSR_FTT_UNIMPFPOP (3ULL << 14)
 182 #define FSR_FTT_SEQ_ERROR (4ULL << 14)
 183 #define FSR_FTT_INVAL_FPR (6ULL << 14)
 184
 185 #define FSR_FCC1_SHIFT 11
 186 #define FSR_FCC1  (1ULL << FSR_FCC1_SHIFT)
 187 #define FSR_FCC0_SHIFT 10
 188 #define FSR_FCC0  (1ULL << FSR_FCC0_SHIFT)
 189
 190 /* MMU */
 191 #define MMU_E     (1<<0)
 192 #define MMU_NF    (1<<1)
 193
 194 #define PTE_ENTRYTYPE_MASK 3
 195 #define PTE_ACCESS_MASK    0x1c
 196 #define PTE_ACCESS_SHIFT   2
 197 #define PTE_PPN_SHIFT      7
 198 #define PTE_ADDR_MASK      0xffffff00
 199
 200 #define PG_ACCESSED_BIT 5
 201 #define PG_MODIFIED_BIT 6
 202 #define PG_CACHE_BIT    7
 203
 204 #define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
 205 #define PG_MODIFIED_MASK (1 << PG_MODIFIED_BIT)
 206 #define PG_CACHE_MASK    (1 << PG_CACHE_BIT)
 207
 208 /* 3 <= NWINDOWS <= 32. */
 209 #define MIN_NWINDOWS 3
 210 #define MAX_NWINDOWS 32
 211
 212 #if !defined(TARGET_SPARC64)
 213 #define NB_MMU_MODES 2
 214 #else
 215 #define NB_MMU_MODES 3
 216 typedef struct trap_state {
 217     uint64_t tpc;
 218     uint64_t tnpc;
 219     uint64_t tstate;
 220     uint32_t tt;
 221 } trap_state;
 222 #endif
 223
 224 typedef struct sparc_def_t {
 225     const char *name;
 226     target_ulong iu_version;
 227     uint32_t fpu_version;
 228     uint32_t mmu_version;
 229     uint32_t mmu_bm;
 230     uint32_t mmu_ctpr_mask;
 231     uint32_t mmu_cxr_mask;
 232     uint32_t mmu_sfsr_mask;
 233     uint32_t mmu_trcr_mask;
 234     uint32_t mxcc_version;
 235     uint32_t features;
 236     uint32_t nwindows;
 237     uint32_t maxtl;
 238 } sparc_def_t;
 239
 240 #define CPU_FEATURE_FLOAT    (1 << 0)
 241 #define CPU_FEATURE_FLOAT128 (1 << 1)
 242 #define CPU_FEATURE_SWAP     (1 << 2)
 243 #define CPU_FEATURE_MUL      (1 << 3)
 244 #define CPU_FEATURE_DIV      (1 << 4)
 245 #define CPU_FEATURE_FLUSH    (1 << 5)
 246 #define CPU_FEATURE_FSQRT    (1 << 6)
 247 #define CPU_FEATURE_FMUL     (1 << 7)
 248 #define CPU_FEATURE_VIS1     (1 << 8)
 249 #define CPU_FEATURE_VIS2     (1 << 9)
 250 #define CPU_FEATURE_FSMULD   (1 << 10)
 251 #define CPU_FEATURE_HYPV     (1 << 11)
 252 #define CPU_FEATURE_CMT      (1 << 12)
 253 #define CPU_FEATURE_GL       (1 << 13)
 254 #ifndef TARGET_SPARC64
 255 #define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP |  \
 256                               CPU_FEATURE_MUL | CPU_FEATURE_DIV |     \
 257                               CPU_FEATURE_FLUSH | CPU_FEATURE_FSQRT | \
 258                               CPU_FEATURE_FMUL | CPU_FEATURE_FSMULD)
 259 #else
 260 #define CPU_DEFAULT_FEATURES (CPU_FEATURE_FLOAT | CPU_FEATURE_SWAP |  \
 261                               CPU_FEATURE_MUL | CPU_FEATURE_DIV |     \
 262                               CPU_FEATURE_FLUSH | CPU_FEATURE_FSQRT | \
 263                               CPU_FEATURE_FMUL | CPU_FEATURE_VIS1 |   \
 264                               CPU_FEATURE_VIS2 | CPU_FEATURE_FSMULD)
 265 enum {
 266     mmu_us_12, // Ultrasparc < III (64 entry TLB)
 267     mmu_us_3,  // Ultrasparc III (512 entry TLB)
 268     mmu_us_4,  // Ultrasparc IV (several TLBs, 32 and 256MB pages)
 269     mmu_sun4v, // T1, T2
 270 };
 271 #endif
 272
 273 typedef struct CPUSPARCState {
 274     target_ulong gregs[8]; /* general registers */
 275     target_ulong *regwptr; /* pointer to current register window */
 276     target_ulong pc;       /* program counter */
 277     target_ulong npc;      /* next program counter */
 278     target_ulong y;        /* multiply/divide register */
 279
 280     /* emulator internal flags handling */
 281     target_ulong cc_src, cc_src2;
 282     target_ulong cc_dst;
 283     uint32_t cc_op;
 284
 285     target_ulong t0, t1; /* temporaries live across basic blocks */
 286     target_ulong cond; /* conditional branch result (XXX: save it in a
 287                           temporary register when possible) */
 288
 289     uint32_t psr;      /* processor state register */
 290     target_ulong fsr;      /* FPU state register */
 291     float32 fpr[TARGET_FPREGS];  /* floating point registers */
 292     uint32_t cwp;      /* index of current register window (extracted
 293                           from PSR) */
 294     uint32_t wim;      /* window invalid mask */
 295     target_ulong tbr;  /* trap base register */
 296     int      psrs;     /* supervisor mode (extracted from PSR) */
 297     int      psrps;    /* previous supervisor mode */
 298     int      psret;    /* enable traps */
 299     uint32_t psrpil;   /* interrupt blocking level */
 300     uint32_t pil_in;   /* incoming interrupt level bitmap */
 301     int      psref;    /* enable fpu */
 302     target_ulong version;
 303     int interrupt_index;
 304     uint32_t nwindows;
 305     /* NOTE: we allow 8 more registers to handle wrapping */
 306     target_ulong regbase[MAX_NWINDOWS * 16 + 8];
 307
 308     CPU_COMMON
 309
 310     /* MMU regs */
 311 #if defined(TARGET_SPARC64)
 312     uint64_t lsu;
 313 #define DMMU_E 0x8
 314 #define IMMU_E 0x4
 315     uint64_t immuregs[16];
 316     uint64_t dmmuregs[16];
 317     uint64_t itlb_tag[64];
 318     uint64_t itlb_tte[64];
 319     uint64_t dtlb_tag[64];
 320     uint64_t dtlb_tte[64];
 321     uint32_t mmu_version;
 322 #else
 323     uint32_t mmuregs[32];
 324     uint64_t mxccdata[4];
 325     uint64_t mxccregs[8];
 326     uint64_t mmubpregs[4];
 327     uint64_t prom_addr;
 328 #endif
 329     /* temporary float registers */
 330     float64 dt0, dt1;
 331     float128 qt0, qt1;
 332     float_status fp_status;
 333 #if defined(TARGET_SPARC64)
 334 #define MAXTL_MAX 8
 335 #define MAXTL_MASK (MAXTL_MAX - 1)
 336     trap_state *tsptr;
 337     trap_state ts[MAXTL_MAX];
 338     uint32_t xcc;               /* Extended integer condition codes */
 339     uint32_t asi;
 340     uint32_t pstate;
 341     uint32_t tl;
 342     uint32_t maxtl;
 343     uint32_t cansave, canrestore, otherwin, wstate, cleanwin;
 344     uint64_t agregs[8]; /* alternate general registers */
 345     uint64_t bgregs[8]; /* backup for normal global registers */
 346     uint64_t igregs[8]; /* interrupt general registers */
 347     uint64_t mgregs[8]; /* mmu general registers */
 348     uint64_t fprs;
 349     uint64_t tick_cmpr, stick_cmpr;
 350     void *tick, *stick;
 351     uint64_t gsr;
 352     uint32_t gl; // UA2005
 353     /* UA 2005 hyperprivileged registers */
 354     uint64_t hpstate, htstate[MAXTL_MAX], hintp, htba, hver, hstick_cmpr, ssr;
 355     void *hstick; // UA 2005
 356     uint32_t softint;
 357 #define SOFTINT_TIMER   1
 358 #define SOFTINT_STIMER  (1 << 16)
 359 #endif
 360     sparc_def_t *def;
 361 } CPUSPARCState;
 362
 363 /* helper.c */
 364 CPUSPARCState *cpu_sparc_init(const char *cpu_model);
 365 void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu);
 366 void sparc_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt,
 367                                                  ...));
 368 void cpu_lock(void);
 369 void cpu_unlock(void);
 370 int cpu_sparc_handle_mmu_fault(CPUSPARCState *env1, target_ulong address, int rw,
 371                                int mmu_idx, int is_softmmu);
 372 target_ulong mmu_probe(CPUSPARCState *env, target_ulong address, int mmulev);
 373 void dump_mmu(CPUSPARCState *env);
 374
 375 /* translate.c */
 376 void gen_intermediate_code_init(CPUSPARCState *env);
 377
 378 /* cpu-exec.c */
 379 int cpu_sparc_exec(CPUSPARCState *s);
 380
 381 #define GET_PSR(env) (env->version | (env->psr & PSR_ICC) |             \
 382                       (env->psref? PSR_EF : 0) |                        \
 383                       (env->psrpil << 8) |                              \
 384                       (env->psrs? PSR_S : 0) |                          \
 385                       (env->psrps? PSR_PS : 0) |                        \
 386                       (env->psret? PSR_ET : 0) | env->cwp)
 387
 388 #ifndef NO_CPU_IO_DEFS
 389 static inline void memcpy32(target_ulong *dst, const target_ulong *src)
 390 {
 391     dst[0] = src[0];
 392     dst[1] = src[1];
 393     dst[2] = src[2];
 394     dst[3] = src[3];
 395     dst[4] = src[4];
 396     dst[5] = src[5];
 397     dst[6] = src[6];
 398     dst[7] = src[7];
 399 }
 400
 401 static inline void cpu_set_cwp(CPUSPARCState *env1, int new_cwp)
 402 {
 403     /* put the modified wrap registers at their proper location */
 404     if (env1->cwp == env1->nwindows - 1)
 405         memcpy32(env1->regbase, env1->regbase + env1->nwindows * 16);
 406     env1->cwp = new_cwp;
 407     /* put the wrap registers at their temporary location */
 408     if (new_cwp == env1->nwindows - 1)
 409         memcpy32(env1->regbase + env1->nwindows * 16, env1->regbase);
 410     env1->regwptr = env1->regbase + (new_cwp * 16);
 411 }
 412
 413 static inline int cpu_cwp_inc(CPUSPARCState *env1, int cwp)
 414 {
 415     if (unlikely(cwp >= env1->nwindows))
 416         cwp -= env1->nwindows;
 417     return cwp;
 418 }
 419
 420 static inline int cpu_cwp_dec(CPUSPARCState *env1, int cwp)
 421 {
 422     if (unlikely(cwp < 0))
 423         cwp += env1->nwindows;
 424     return cwp;
 425 }
 426 #endif
 427
 428 #define PUT_PSR(env, val) do { int _tmp = val;                          \
 429         env->psr = _tmp & PSR_ICC;                                      \
 430         env->psref = (_tmp & PSR_EF)? 1 : 0;                            \
 431         env->psrpil = (_tmp & PSR_PIL) >> 8;                            \
 432         env->psrs = (_tmp & PSR_S)? 1 : 0;                              \
 433         env->psrps = (_tmp & PSR_PS)? 1 : 0;                            \
 434         env->psret = (_tmp & PSR_ET)? 1 : 0;                            \
 435         cpu_set_cwp(env, _tmp & PSR_CWP);                               \
 436         CC_OP = CC_OP_FLAGS;                                            \
 437     } while (0)
 438
 439 #ifdef TARGET_SPARC64
 440 #define GET_CCR(env) (((env->xcc >> 20) << 4) | ((env->psr & PSR_ICC) >> 20))
 441 #define PUT_CCR(env, val) do { int _tmp = val;                          \
 442         env->xcc = (_tmp >> 4) << 20;                                   \
 443         env->psr = (_tmp & 0xf) << 20;                                  \
 444         CC_OP = CC_OP_FLAGS;                                            \
 445     } while (0)
 446 #define GET_CWP64(env) (env->nwindows - 1 - (env)->cwp)
 447
 448 #ifndef NO_CPU_IO_DEFS
 449 static inline void PUT_CWP64(CPUSPARCState *env1, int cwp)
 450 {
 451     if (unlikely(cwp >= env1->nwindows || cwp < 0))
 452         cwp = 0;
 453     cpu_set_cwp(env1, env1->nwindows - 1 - cwp);
 454 }
 455 #endif
 456 #endif
 457
 458 /* cpu-exec.c */
 459 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
 460                           int is_asi, int size);
 461 int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
 462
 463 #define cpu_init cpu_sparc_init
 464 #define cpu_exec cpu_sparc_exec
 465 #define cpu_gen_code cpu_sparc_gen_code
 466 #define cpu_signal_handler cpu_sparc_signal_handler
 467 #define cpu_list sparc_cpu_list
 468
 469 #define CPU_SAVE_VERSION 5
 470
 471 /* MMU modes definitions */
 472 #define MMU_MODE0_SUFFIX _user
 473 #define MMU_MODE1_SUFFIX _kernel
 474 #ifdef TARGET_SPARC64
 475 #define MMU_MODE2_SUFFIX _hypv
 476 #endif
 477 #define MMU_USER_IDX   0
 478 #define MMU_KERNEL_IDX 1
 479 #define MMU_HYPV_IDX   2
 480
 481 static inline int cpu_mmu_index(CPUState *env1)
 482 {
 483 #if defined(CONFIG_USER_ONLY)
 484     return MMU_USER_IDX;
 485 #elif !defined(TARGET_SPARC64)
 486     return env1->psrs;
 487 #else
 488     if (!env1->psrs)
 489         return MMU_USER_IDX;
 490     else if ((env1->hpstate & HS_PRIV) == 0)
 491         return MMU_KERNEL_IDX;
 492     else
 493         return MMU_HYPV_IDX;
 494 #endif
 495 }
 496
 497 static inline int cpu_fpu_enabled(CPUState *env1)
 498 {
 499 #if defined(CONFIG_USER_ONLY)
 500     return 1;
 501 #elif !defined(TARGET_SPARC64)
 502     return env1->psref;
 503 #else
 504     return ((env1->pstate & PS_PEF) != 0) && ((env1->fprs & FPRS_FEF) != 0);
 505 #endif
 506 }
 507
 508 #if defined(CONFIG_USER_ONLY)
 509 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 510 {
 511     if (newsp)
 512         env->regwptr[22] = newsp;
 513     env->regwptr[0] = 0;
 514     /* FIXME: Do we also need to clear CF?  */
 515     /* XXXXX */
 516     printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
 517 }
 518 #endif
 519
 520 #include "cpu-all.h"
 521 #include "exec-all.h"
 522
 523 /* sum4m.c, sun4u.c */
 524 void cpu_check_irqs(CPUSPARCState *env);
 525
 526 #ifdef TARGET_SPARC64
 527 /* sun4u.c */
 528 void cpu_tick_set_count(void *opaque, uint64_t count);
 529 uint64_t cpu_tick_get_count(void *opaque);
 530 void cpu_tick_set_limit(void *opaque, uint64_t limit);
 531 #endif
 532
 533 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
 534 {
 535     env->pc = tb->pc;
 536     env->npc = tb->cs_base;
 537 }
 538
 539 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 540                                         target_ulong *cs_base, int *flags)
 541 {
 542     *pc = env->pc;
 543     *cs_base = env->npc;
 544 #ifdef TARGET_SPARC64
 545     // AM . Combined FPU enable bits . PRIV . DMMU enabled . IMMU enabled
 546     *flags = ((env->pstate & PS_AM) << 2)
 547         | (((env->pstate & PS_PEF) >> 1) | ((env->fprs & FPRS_FEF) << 2))
 548         | (env->pstate & PS_PRIV) | ((env->lsu & (DMMU_E | IMMU_E)) >> 2);
 549 #else
 550     // FPU enable . Supervisor
 551     *flags = (env->psref << 4) | env->psrs;
 552 #endif
 553 }
 554
 555 #endif