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_DATA_ACCESS 0x29
  47 #define TT_DIV_ZERO 0x2a
  48 #define TT_NCP_INSN 0x24
  49 #define TT_TRAP     0x80
  50 #else
  51 #define TT_TFAULT   0x08
  52 #define TT_TMISS    0x09
  53 #define TT_CODE_ACCESS 0x0a
  54 #define TT_ILL_INSN 0x10
  55 #define TT_PRIV_INSN 0x11
  56 #define TT_NFPU_INSN 0x20
  57 #define TT_FP_EXCP  0x21
  58 #define TT_TOVF     0x23
  59 #define TT_CLRWIN   0x24
  60 #define TT_DIV_ZERO 0x28
  61 #define TT_DFAULT   0x30
  62 #define TT_DMISS    0x31
  63 #define TT_DATA_ACCESS 0x32
  64 #define TT_DPROT    0x33
  65 #define TT_UNALIGNED 0x34
  66 #define TT_PRIV_ACT 0x37
  67 #define TT_EXTINT   0x40
  68 #define TT_SPILL    0x80
  69 #define TT_FILL     0xc0
  70 #define TT_WOTHER   0x10
  71 #define TT_TRAP     0x100
  72 #endif
  73
  74 #define PSR_NEG   (1<<23)
  75 #define PSR_ZERO  (1<<22)
  76 #define PSR_OVF   (1<<21)
  77 #define PSR_CARRY (1<<20)
  78 #define PSR_ICC   (PSR_NEG|PSR_ZERO|PSR_OVF|PSR_CARRY)
  79 #define PSR_EF    (1<<12)
  80 #define PSR_PIL   0xf00
  81 #define PSR_S     (1<<7)
  82 #define PSR_PS    (1<<6)
  83 #define PSR_ET    (1<<5)
  84 #define PSR_CWP   0x1f
  85
  86 /* Trap base register */
  87 #define TBR_BASE_MASK 0xfffff000
  88
  89 #if defined(TARGET_SPARC64)
  90 #define PS_IG    (1<<11)
  91 #define PS_MG    (1<<10)
  92 #define PS_RMO   (1<<7)
  93 #define PS_RED   (1<<5)
  94 #define PS_PEF   (1<<4)
  95 #define PS_AM    (1<<3)
  96 #define PS_PRIV  (1<<2)
  97 #define PS_IE    (1<<1)
  98 #define PS_AG    (1<<0)
  99
 100 #define FPRS_FEF (1<<2)
 101
 102 #define HS_PRIV  (1<<2)
 103 #endif
 104
 105 /* Fcc */
 106 #define FSR_RD1        (1<<31)
 107 #define FSR_RD0        (1<<30)
 108 #define FSR_RD_MASK    (FSR_RD1 | FSR_RD0)
 109 #define FSR_RD_NEAREST 0
 110 #define FSR_RD_ZERO    FSR_RD0
 111 #define FSR_RD_POS     FSR_RD1
 112 #define FSR_RD_NEG     (FSR_RD1 | FSR_RD0)
 113
 114 #define FSR_NVM   (1<<27)
 115 #define FSR_OFM   (1<<26)
 116 #define FSR_UFM   (1<<25)
 117 #define FSR_DZM   (1<<24)
 118 #define FSR_NXM   (1<<23)
 119 #define FSR_TEM_MASK (FSR_NVM | FSR_OFM | FSR_UFM | FSR_DZM | FSR_NXM)
 120
 121 #define FSR_NVA   (1<<9)
 122 #define FSR_OFA   (1<<8)
 123 #define FSR_UFA   (1<<7)
 124 #define FSR_DZA   (1<<6)
 125 #define FSR_NXA   (1<<5)
 126 #define FSR_AEXC_MASK (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA)
 127
 128 #define FSR_NVC   (1<<4)
 129 #define FSR_OFC   (1<<3)
 130 #define FSR_UFC   (1<<2)
 131 #define FSR_DZC   (1<<1)
 132 #define FSR_NXC   (1<<0)
 133 #define FSR_CEXC_MASK (FSR_NVC | FSR_OFC | FSR_UFC | FSR_DZC | FSR_NXC)
 134
 135 #define FSR_FTT2   (1<<16)
 136 #define FSR_FTT1   (1<<15)
 137 #define FSR_FTT0   (1<<14)
 138 #define FSR_FTT_MASK (FSR_FTT2 | FSR_FTT1 | FSR_FTT0)
 139 #define FSR_FTT_IEEE_EXCP (1 << 14)
 140 #define FSR_FTT_UNIMPFPOP (3 << 14)
 141 #define FSR_FTT_SEQ_ERROR (4 << 14)
 142 #define FSR_FTT_INVAL_FPR (6 << 14)
 143
 144 #define FSR_FCC1  (1<<11)
 145 #define FSR_FCC0  (1<<10)
 146
 147 /* MMU */
 148 #define MMU_E     (1<<0)
 149 #define MMU_NF    (1<<1)
 150
 151 #define PTE_ENTRYTYPE_MASK 3
 152 #define PTE_ACCESS_MASK    0x1c
 153 #define PTE_ACCESS_SHIFT   2
 154 #define PTE_PPN_SHIFT      7
 155 #define PTE_ADDR_MASK      0xffffff00
 156
 157 #define PG_ACCESSED_BIT 5
 158 #define PG_MODIFIED_BIT 6
 159 #define PG_CACHE_BIT    7
 160
 161 #define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
 162 #define PG_MODIFIED_MASK (1 << PG_MODIFIED_BIT)
 163 #define PG_CACHE_MASK    (1 << PG_CACHE_BIT)
 164
 165 /* 2 <= NWINDOWS <= 32. In QEMU it must also be a power of two. */
 166 #define NWINDOWS  8
 167
 168 #if !defined(TARGET_SPARC64)
 169 #define NB_MMU_MODES 2
 170 #else
 171 #define NB_MMU_MODES 3
 172 typedef struct trap_state {
 173     uint64_t tpc;
 174     uint64_t tnpc;
 175     uint64_t tstate;
 176     uint32_t tt;
 177 } trap_state;
 178 #endif
 179
 180 typedef struct CPUSPARCState {
 181     target_ulong gregs[8]; /* general registers */
 182     target_ulong *regwptr; /* pointer to current register window */
 183     float32 fpr[TARGET_FPREGS];  /* floating point registers */
 184     target_ulong pc;       /* program counter */
 185     target_ulong npc;      /* next program counter */
 186     target_ulong y;        /* multiply/divide register */
 187
 188     /* emulator internal flags handling */
 189     target_ulong cc_src;
 190     target_ulong cc_dst;
 191
 192     uint32_t psr;      /* processor state register */
 193     target_ulong fsr;      /* FPU state register */
 194     uint32_t cwp;      /* index of current register window (extracted
 195                           from PSR) */
 196     uint32_t wim;      /* window invalid mask */
 197     target_ulong tbr;  /* trap base register */
 198     int      psrs;     /* supervisor mode (extracted from PSR) */
 199     int      psrps;    /* previous supervisor mode */
 200     int      psret;    /* enable traps */
 201     uint32_t psrpil;   /* interrupt blocking level */
 202     uint32_t pil_in;   /* incoming interrupt level bitmap */
 203     int      psref;    /* enable fpu */
 204     target_ulong version;
 205     jmp_buf  jmp_env;
 206     int user_mode_only;
 207     int exception_index;
 208     int interrupt_index;
 209     int interrupt_request;
 210     int halted;
 211     uint32_t mmu_bm;
 212     uint32_t mmu_ctpr_mask;
 213     uint32_t mmu_cxr_mask;
 214     uint32_t mmu_sfsr_mask;
 215     uint32_t mmu_trcr_mask;
 216     /* NOTE: we allow 8 more registers to handle wrapping */
 217     target_ulong regbase[NWINDOWS * 16 + 8];
 218
 219     CPU_COMMON
 220
 221     /* MMU regs */
 222 #if defined(TARGET_SPARC64)
 223     uint64_t lsu;
 224 #define DMMU_E 0x8
 225 #define IMMU_E 0x4
 226     uint64_t immuregs[16];
 227     uint64_t dmmuregs[16];
 228     uint64_t itlb_tag[64];
 229     uint64_t itlb_tte[64];
 230     uint64_t dtlb_tag[64];
 231     uint64_t dtlb_tte[64];
 232 #else
 233     uint32_t mmuregs[32];
 234     uint64_t mxccdata[4];
 235     uint64_t mxccregs[8];
 236     uint64_t prom_addr;
 237 #endif
 238     /* temporary float registers */
 239     float32 ft0, ft1;
 240     float64 dt0, dt1;
 241 #if defined(CONFIG_USER_ONLY)
 242     float128 qt0, qt1;
 243 #endif
 244     float_status fp_status;
 245 #if defined(TARGET_SPARC64)
 246 #define MAXTL 4
 247     uint64_t t0, t1, t2;
 248     trap_state *tsptr;
 249     trap_state ts[MAXTL];
 250     uint32_t xcc;               /* Extended integer condition codes */
 251     uint32_t asi;
 252     uint32_t pstate;
 253     uint32_t tl;
 254     uint32_t cansave, canrestore, otherwin, wstate, cleanwin;
 255     uint64_t agregs[8]; /* alternate general registers */
 256     uint64_t bgregs[8]; /* backup for normal global registers */
 257     uint64_t igregs[8]; /* interrupt general registers */
 258     uint64_t mgregs[8]; /* mmu general registers */
 259     uint64_t fprs;
 260     uint64_t tick_cmpr, stick_cmpr;
 261     void *tick, *stick;
 262     uint64_t gsr;
 263     uint32_t gl; // UA2005
 264     /* UA 2005 hyperprivileged registers */
 265     uint64_t hpstate, htstate[MAXTL], hintp, htba, hver, hstick_cmpr, ssr;
 266     void *hstick; // UA 2005
 267 #endif
 268 #if !defined(TARGET_SPARC64) && !defined(reg_T2)
 269     target_ulong t2;
 270 #endif
 271 } CPUSPARCState;
 272 #if defined(TARGET_SPARC64)
 273 #define GET_FSR32(env) (env->fsr & 0xcfc1ffff)
 274 #define PUT_FSR32(env, val) do { uint32_t _tmp = val;                   \
 275         env->fsr = (_tmp & 0xcfc1c3ff) | (env->fsr & 0x3f00000000ULL);  \
 276     } while (0)
 277 #define GET_FSR64(env) (env->fsr & 0x3fcfc1ffffULL)
 278 #define PUT_FSR64(env, val) do { uint64_t _tmp = val;   \
 279         env->fsr = _tmp & 0x3fcfc1c3ffULL;              \
 280     } while (0)
 281 #else
 282 #define GET_FSR32(env) (env->fsr)
 283 #define PUT_FSR32(env, val) do { uint32_t _tmp = val;                   \
 284         env->fsr = (_tmp & 0xcfc1dfff) | (env->fsr & 0x000e0000);       \
 285     } while (0)
 286 #endif
 287
 288 CPUSPARCState *cpu_sparc_init(const char *cpu_model);
 289 int cpu_sparc_exec(CPUSPARCState *s);
 290 int cpu_sparc_close(CPUSPARCState *s);
 291 void sparc_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt,
 292                                                  ...));
 293 void cpu_sparc_set_id(CPUSPARCState *env, unsigned int cpu);
 294
 295 #define GET_PSR(env) (env->version | (env->psr & PSR_ICC) |             \
 296                       (env->psref? PSR_EF : 0) |                        \
 297                       (env->psrpil << 8) |                              \
 298                       (env->psrs? PSR_S : 0) |                          \
 299                       (env->psrps? PSR_PS : 0) |                        \
 300                       (env->psret? PSR_ET : 0) | env->cwp)
 301
 302 #ifndef NO_CPU_IO_DEFS
 303 void cpu_set_cwp(CPUSPARCState *env1, int new_cwp);
 304 #endif
 305
 306 #define PUT_PSR(env, val) do { int _tmp = val;                          \
 307         env->psr = _tmp & PSR_ICC;                                      \
 308         env->psref = (_tmp & PSR_EF)? 1 : 0;                            \
 309         env->psrpil = (_tmp & PSR_PIL) >> 8;                            \
 310         env->psrs = (_tmp & PSR_S)? 1 : 0;                              \
 311         env->psrps = (_tmp & PSR_PS)? 1 : 0;                            \
 312         env->psret = (_tmp & PSR_ET)? 1 : 0;                            \
 313         cpu_set_cwp(env, _tmp & PSR_CWP);                               \
 314     } while (0)
 315
 316 #ifdef TARGET_SPARC64
 317 #define GET_CCR(env) (((env->xcc >> 20) << 4) | ((env->psr & PSR_ICC) >> 20))
 318 #define PUT_CCR(env, val) do { int _tmp = val;                          \
 319         env->xcc = (_tmp >> 4) << 20;                                           \
 320         env->psr = (_tmp & 0xf) << 20;                                  \
 321     } while (0)
 322 #define GET_CWP64(env) (NWINDOWS - 1 - (env)->cwp)
 323 #define PUT_CWP64(env, val) \
 324     cpu_set_cwp(env, NWINDOWS - 1 - ((val) & (NWINDOWS - 1)))
 325
 326 #endif
 327
 328 int cpu_sparc_signal_handler(int host_signum, void *pinfo, void *puc);
 329 void do_unassigned_access(target_phys_addr_t addr, int is_write, int is_exec,
 330                           int is_asi);
 331 void cpu_check_irqs(CPUSPARCState *env);
 332
 333 #define CPUState CPUSPARCState
 334 #define cpu_init cpu_sparc_init
 335 #define cpu_exec cpu_sparc_exec
 336 #define cpu_gen_code cpu_sparc_gen_code
 337 #define cpu_signal_handler cpu_sparc_signal_handler
 338 #define cpu_list sparc_cpu_list
 339
 340 /* MMU modes definitions */
 341 #define MMU_MODE0_SUFFIX _user
 342 #define MMU_MODE1_SUFFIX _kernel
 343 #ifdef TARGET_SPARC64
 344 #define MMU_MODE2_SUFFIX _hypv
 345 #endif
 346 #define MMU_USER_IDX   0
 347 #define MMU_KERNEL_IDX 1
 348 #define MMU_HYPV_IDX   2
 349
 350 static inline int cpu_mmu_index (CPUState *env)
 351 {
 352 #if defined(CONFIG_USER_ONLY)
 353     return MMU_USER_IDX;
 354 #elif !defined(TARGET_SPARC64)
 355     return env->psrs;
 356 #else
 357     if (!env->psrs)
 358         return MMU_USER_IDX;
 359     else if ((env->hpstate & HS_PRIV) == 0)
 360         return MMU_KERNEL_IDX;
 361     else
 362         return MMU_HYPV_IDX;
 363 #endif
 364 }
 365
 366 static inline int cpu_fpu_enabled(CPUState *env)
 367 {
 368 #if defined(CONFIG_USER_ONLY)
 369     return 1;
 370 #elif !defined(TARGET_SPARC64)
 371     return env->psref;
 372 #else
 373     return ((env->pstate & PS_PEF) != 0) && ((env->fprs & FPRS_FEF) != 0);
 374 #endif
 375 }
 376
 377 #include "cpu-all.h"
 378
 379 #endif