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 #else
  10 #define TARGET_LONG_BITS 64
  11 #define TARGET_FPREGS 64
  12 #endif
  13 #define TARGET_FPREG_T float
  14
  15 #include "cpu-defs.h"
  16
  17 #include "softfloat.h"
  18
  19 #define TARGET_HAS_ICE 1
  20
  21 /*#define EXCP_INTERRUPT 0x100*/
  22
  23 /* trap definitions */
  24 #ifndef TARGET_SPARC64
  25 #define TT_TFAULT   0x01
  26 #define TT_ILL_INSN 0x02
  27 #define TT_PRIV_INSN 0x03
  28 #define TT_NFPU_INSN 0x04
  29 #define TT_WIN_OVF  0x05
  30 #define TT_WIN_UNF  0x06
  31 #define TT_FP_EXCP  0x08
  32 #define TT_DFAULT   0x09
  33 #define TT_EXTINT   0x10
  34 #define TT_DIV_ZERO 0x2a
  35 #define TT_TRAP     0x80
  36 #else
  37 #define TT_TFAULT   0x08
  38 #define TT_ILL_INSN 0x10
  39 #define TT_PRIV_INSN 0x11
  40 #define TT_NFPU_INSN 0x20
  41 #define TT_FP_EXCP  0x21
  42 #define TT_CLRWIN   0x24
  43 #define TT_DIV_ZERO 0x28
  44 #define TT_DFAULT   0x30
  45 #define TT_EXTINT   0x40
  46 #define TT_SPILL    0x80
  47 #define TT_FILL     0xc0
  48 #define TT_WOTHER   0x10
  49 #define TT_TRAP     0x100
  50 #endif
  51
  52 #define PSR_NEG   (1<<23)
  53 #define PSR_ZERO  (1<<22)
  54 #define PSR_OVF   (1<<21)
  55 #define PSR_CARRY (1<<20)
  56 #define PSR_ICC   (PSR_NEG|PSR_ZERO|PSR_OVF|PSR_CARRY)
  57 #define PSR_EF    (1<<12)
  58 #define PSR_PIL   0xf00
  59 #define PSR_S     (1<<7)
  60 #define PSR_PS    (1<<6)
  61 #define PSR_ET    (1<<5)
  62 #define PSR_CWP   0x1f
  63
  64 /* Trap base register */
  65 #define TBR_BASE_MASK 0xfffff000
  66
  67 #if defined(TARGET_SPARC64)
  68 #define PS_PEF   (1<<4)
  69 #define PS_AM    (1<<3)
  70 #define PS_PRIV  (1<<2)
  71 #define PS_IE    (1<<1)
  72 #endif
  73
  74 /* Fcc */
  75 #define FSR_RD1        (1<<31)
  76 #define FSR_RD0        (1<<30)
  77 #define FSR_RD_MASK    (FSR_RD1 | FSR_RD0)
  78 #define FSR_RD_NEAREST 0
  79 #define FSR_RD_ZERO    FSR_RD0
  80 #define FSR_RD_POS     FSR_RD1
  81 #define FSR_RD_NEG     (FSR_RD1 | FSR_RD0)
  82
  83 #define FSR_NVM   (1<<27)
  84 #define FSR_OFM   (1<<26)
  85 #define FSR_UFM   (1<<25)
  86 #define FSR_DZM   (1<<24)
  87 #define FSR_NXM   (1<<23)
  88 #define FSR_TEM_MASK (FSR_NVM | FSR_OFM | FSR_UFM | FSR_DZM | FSR_NXM)
  89
  90 #define FSR_NVA   (1<<9)
  91 #define FSR_OFA   (1<<8)
  92 #define FSR_UFA   (1<<7)
  93 #define FSR_DZA   (1<<6)
  94 #define FSR_NXA   (1<<5)
  95 #define FSR_AEXC_MASK (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA)
  96
  97 #define FSR_NVC   (1<<4)
  98 #define FSR_OFC   (1<<3)
  99 #define FSR_UFC   (1<<2)
 100 #define FSR_DZC   (1<<1)
 101 #define FSR_NXC   (1<<0)
 102 #define FSR_CEXC_MASK (FSR_NVC | FSR_OFC | FSR_UFC | FSR_DZC | FSR_NXC)
 103
 104 #define FSR_FTT2   (1<<16)
 105 #define FSR_FTT1   (1<<15)
 106 #define FSR_FTT0   (1<<14)
 107 #define FSR_FTT_MASK (FSR_FTT2 | FSR_FTT1 | FSR_FTT0)
 108 #define FSR_FTT_IEEE_EXCP (1 << 14)
 109 #define FSR_FTT_UNIMPFPOP (3 << 14)
 110 #define FSR_FTT_INVAL_FPR (6 << 14)
 111
 112 #define FSR_FCC1  (1<<11)
 113 #define FSR_FCC0  (1<<10)
 114
 115 /* MMU */
 116 #define MMU_E     (1<<0)
 117 #define MMU_NF    (1<<1)
 118
 119 #define PTE_ENTRYTYPE_MASK 3
 120 #define PTE_ACCESS_MASK    0x1c
 121 #define PTE_ACCESS_SHIFT   2
 122 #define PTE_PPN_SHIFT      7
 123 #define PTE_ADDR_MASK      0xffffff00
 124
 125 #define PG_ACCESSED_BIT 5
 126 #define PG_MODIFIED_BIT 6
 127 #define PG_CACHE_BIT    7
 128
 129 #define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
 130 #define PG_MODIFIED_MASK (1 << PG_MODIFIED_BIT)
 131 #define PG_CACHE_MASK    (1 << PG_CACHE_BIT)
 132
 133 /* 2 <= NWINDOWS <= 32. In QEMU it must also be a power of two. */
 134 #define NWINDOWS  8
 135
 136 typedef struct CPUSPARCState {
 137     target_ulong gregs[8]; /* general registers */
 138     target_ulong *regwptr; /* pointer to current register window */
 139     TARGET_FPREG_T    fpr[TARGET_FPREGS];  /* floating point registers */
 140     target_ulong pc;       /* program counter */
 141     target_ulong npc;      /* next program counter */
 142     target_ulong y;        /* multiply/divide register */
 143     uint32_t psr;      /* processor state register */
 144     target_ulong fsr;      /* FPU state register */
 145     uint32_t cwp;      /* index of current register window (extracted
 146                           from PSR) */
 147     uint32_t wim;      /* window invalid mask */
 148     target_ulong tbr;  /* trap base register */
 149     int      psrs;     /* supervisor mode (extracted from PSR) */
 150     int      psrps;    /* previous supervisor mode */
 151     int      psret;    /* enable traps */
 152     uint32_t psrpil;   /* interrupt level */
 153     int      psref;    /* enable fpu */
 154     jmp_buf  jmp_env;
 155     int user_mode_only;
 156     int exception_index;
 157     int interrupt_index;
 158     int interrupt_request;
 159     struct TranslationBlock *current_tb;
 160     void *opaque;
 161     /* NOTE: we allow 8 more registers to handle wrapping */
 162     target_ulong regbase[NWINDOWS * 16 + 8];
 163
 164     /* in order to avoid passing too many arguments to the memory
 165        write helpers, we store some rarely used information in the CPU
 166        context) */
 167     unsigned long mem_write_pc; /* host pc at which the memory was
 168                                    written */
 169     unsigned long mem_write_vaddr; /* target virtual addr at which the
 170                                       memory was written */
 171     /* 0 = kernel, 1 = user (may have 2 = kernel code, 3 = user code ?) */
 172     CPUTLBEntry tlb_read[2][CPU_TLB_SIZE];
 173     CPUTLBEntry tlb_write[2][CPU_TLB_SIZE];
 174     /* MMU regs */
 175 #if defined(TARGET_SPARC64)
 176     uint64_t lsu;
 177 #define DMMU_E 0x8
 178 #define IMMU_E 0x4
 179     uint64_t immuregs[16];
 180     uint64_t dmmuregs[16];
 181     uint64_t itlb_tag[64];
 182     uint64_t itlb_tte[64];
 183     uint64_t dtlb_tag[64];
 184     uint64_t dtlb_tte[64];
 185 #else
 186     uint32_t mmuregs[16];
 187 #endif
 188     /* temporary float registers */
 189     float ft0, ft1;
 190     double dt0, dt1;
 191     float_status fp_status;
 192 #if defined(TARGET_SPARC64)
 193 #define MAXTL 4
 194     uint64_t t0, t1, t2;
 195     uint64_t tpc[MAXTL];
 196     uint64_t tnpc[MAXTL];
 197     uint64_t tstate[MAXTL];
 198     uint32_t tt[MAXTL];
 199     uint32_t xcc;               /* Extended integer condition codes */
 200     uint32_t asi;
 201     uint32_t pstate;
 202     uint32_t tl;
 203     uint32_t cansave, canrestore, otherwin, wstate, cleanwin;
 204     target_ulong agregs[8]; /* alternate general registers */
 205     target_ulong igregs[8]; /* interrupt general registers */
 206     target_ulong mgregs[8]; /* mmu general registers */
 207     uint64_t version;
 208     uint64_t fprs;
 209 #endif
 210 #if !defined(TARGET_SPARC64) && !defined(reg_T2)
 211     target_ulong t2;
 212 #endif
 213
 214     /* ice debug support */
 215     target_ulong breakpoints[MAX_BREAKPOINTS];
 216     int nb_breakpoints;
 217     int singlestep_enabled; /* XXX: should use CPU single step mode instead */
 218
 219 } CPUSPARCState;
 220 #if defined(TARGET_SPARC64)
 221 #define GET_FSR32(env) (env->fsr & 0xcfc1ffff)
 222 #define PUT_FSR32(env, val) do { uint32_t _tmp = val;                   \
 223         env->fsr = (_tmp & 0xcfc1c3ff) | (env->fsr & 0x3f00000000ULL);  \
 224     } while (0)
 225 #define GET_FSR64(env) (env->fsr & 0x3fcfc1ffffULL)
 226 #define PUT_FSR64(env, val) do { uint64_t _tmp = val;   \
 227         env->fsr = _tmp & 0x3fcfc1c3ffULL;              \
 228     } while (0)
 229 // Manuf 0x17, version 0x11, mask 0 (UltraSparc-II)
 230 #define GET_VER(env) ((0x17ULL << 48) | (0x11ULL << 32) |               \
 231                       (0 << 24) | (MAXTL << 8) | (NWINDOWS - 1))
 232 #else
 233 #define GET_FSR32(env) (env->fsr)
 234 #define PUT_FSR32(env, val) do { uint32_t _tmp = val;   \
 235         env->fsr = _tmp & 0xcfc1ffff;                   \
 236     } while (0)
 237 #endif
 238
 239 CPUSPARCState *cpu_sparc_init(void);
 240 int cpu_sparc_exec(CPUSPARCState *s);
 241 int cpu_sparc_close(CPUSPARCState *s);
 242 void cpu_get_fp64(uint64_t *pmant, uint16_t *pexp, double f);
 243 double cpu_put_fp64(uint64_t mant, uint16_t exp);
 244
 245 /* Fake impl 0, version 4 */
 246 #define GET_PSR(env) ((0 << 28) | (4 << 24) | (env->psr & PSR_ICC) |    \
 247                       (env->psref? PSR_EF : 0) |                        \
 248                       (env->psrpil << 8) |                              \
 249                       (env->psrs? PSR_S : 0) |                          \
 250                       (env->psrps? PSR_PS : 0) |                        \
 251                       (env->psret? PSR_ET : 0) | env->cwp)
 252
 253 #ifndef NO_CPU_IO_DEFS
 254 void cpu_set_cwp(CPUSPARCState *env1, int new_cwp);
 255 #endif
 256
 257 #define PUT_PSR(env, val) do { int _tmp = val;                          \
 258         env->psr = _tmp & PSR_ICC;                                      \
 259         env->psref = (_tmp & PSR_EF)? 1 : 0;                            \
 260         env->psrpil = (_tmp & PSR_PIL) >> 8;                            \
 261         env->psrs = (_tmp & PSR_S)? 1 : 0;                              \
 262         env->psrps = (_tmp & PSR_PS)? 1 : 0;                            \
 263         env->psret = (_tmp & PSR_ET)? 1 : 0;                            \
 264         cpu_set_cwp(env, _tmp & PSR_CWP & (NWINDOWS - 1));              \
 265     } while (0)
 266
 267 #ifdef TARGET_SPARC64
 268 #define GET_CCR(env) ((env->xcc << 4) | (env->psr & PSR_ICC))
 269 #define PUT_CCR(env, val) do { int _tmp = val;                          \
 270         env->xcc = _tmp >> 4;                                           \
 271         env->psr = (_tmp & 0xf) << 20;                                  \
 272     } while (0)
 273 #endif
 274
 275 struct siginfo;
 276 int cpu_sparc_signal_handler(int hostsignum, struct siginfo *info, void *puc);
 277
 278 #define TARGET_PAGE_BITS 12 /* 4k */
 279 #include "cpu-all.h"
 280
 281 #endif