sim/mips/sim-main.h

   1 /* MIPS Simulator definition.
   2    Copyright (C) 1997-2021 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.
   4
   5 This file is part of the MIPS sim.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef SIM_MAIN_H
  21 #define SIM_MAIN_H
  22
  23 /* MIPS uses an unusual format for floating point quiet NaNs.  */
  24 #define SIM_QUIET_NAN_NEGATED
  25
  26 #define SIM_CORE_SIGNAL(SD,CPU,CIA,MAP,NR_BYTES,ADDR,TRANSFER,ERROR) \
  27 mips_core_signal ((SD), (CPU), (CIA), (MAP), (NR_BYTES), (ADDR), (TRANSFER), (ERROR))
  28
  29 #include "sim-basics.h"
  30 #include "sim-base.h"
  31 #include "bfd.h"
  32
  33 /* Deprecated macros and types for manipulating 64bit values.  Use
  34    ../common/sim-bits.h and ../common/sim-endian.h macros instead. */
  35
  36 typedef signed64 word64;
  37 typedef unsigned64 uword64;
  38
  39 #define WORD64LO(t)     (unsigned int)((t)&0xFFFFFFFF)
  40 #define WORD64HI(t)     (unsigned int)(((uword64)(t))>>32)
  41 #define SET64LO(t)      (((uword64)(t))&0xFFFFFFFF)
  42 #define SET64HI(t)      (((uword64)(t))<<32)
  43 #define WORD64(h,l)     ((word64)((SET64HI(h)|SET64LO(l))))
  44 #define UWORD64(h,l)     (SET64HI(h)|SET64LO(l))
  45
  46 /* Check if a value will fit within a halfword: */
  47 #define NOTHALFWORDVALUE(v) ((((((uword64)(v)>>16) == 0) && !((v) & ((unsigned)1 << 15))) || (((((uword64)(v)>>32) == 0xFFFFFFFF) && ((((uword64)(v)>>16) & 0xFFFF) == 0xFFFF)) && ((v) & ((unsigned)1 << 15)))) ? (1 == 0) : (1 == 1))
  48
  49
  50 typedef enum {
  51   cp0_dmfc0,
  52   cp0_dmtc0,
  53   cp0_mfc0,
  54   cp0_mtc0,
  55   cp0_tlbr,
  56   cp0_tlbwi,
  57   cp0_tlbwr,
  58   cp0_tlbp,
  59   cp0_cache,
  60   cp0_eret,
  61   cp0_deret,
  62   cp0_rfe
  63 } CP0_operation;
  64
  65 /* Floating-point operations: */
  66
  67 #include "sim-fpu.h"
  68 #include "cp1.h"
  69
  70 /* FPU registers must be one of the following types. All other values
  71    are reserved (and undefined). */
  72 typedef enum {
  73  fmt_single  = 0,
  74  fmt_double  = 1,
  75  fmt_word    = 4,
  76  fmt_long    = 5,
  77  fmt_ps      = 6,
  78  /* The following are well outside the normal acceptable format
  79     range, and are used in the register status vector. */
  80  fmt_unknown       = 0x10000000,
  81  fmt_uninterpreted = 0x20000000,
  82  fmt_uninterpreted_32 = 0x40000000,
  83  fmt_uninterpreted_64 = 0x80000000U,
  84 } FP_formats;
  85
  86 /* For paired word (pw) operations, the opcode representation is fmt_word,
  87    but register transfers (StoreFPR, ValueFPR, etc.) are done as fmt_long.  */
  88 #define fmt_pw fmt_long
  89
  90 /* This should be the COC1 value at the start of the preceding
  91    instruction: */
  92 #define PREVCOC1() ((STATE & simPCOC1) ? 1 : 0)
  93
  94 #ifdef TARGET_ENABLE_FR
  95 /* FIXME: this should be enabled for all targets, but needs testing first. */
  96 #define SizeFGR() (((WITH_TARGET_FLOATING_POINT_BITSIZE) == 64) \
  97    ? ((SR & status_FR) ? 64 : 32) \
  98    : (WITH_TARGET_FLOATING_POINT_BITSIZE))
  99 #else
 100 #define SizeFGR() (WITH_TARGET_FLOATING_POINT_BITSIZE)
 101 #endif
 102
 103
 104
 105
 106
 107 /* HI/LO register accesses */
 108
 109 /* For some MIPS targets, the HI/LO registers have certain timing
 110    restrictions in that, for instance, a read of a HI register must be
 111    separated by at least three instructions from a preceeding read.
 112
 113    The struct below is used to record the last access by each of A MT,
 114    MF or other OP instruction to a HI/LO register.  See mips.igen for
 115    more details. */
 116
 117 typedef struct _hilo_access {
 118   signed64 timestamp;
 119   address_word cia;
 120 } hilo_access;
 121
 122 typedef struct _hilo_history {
 123   hilo_access mt;
 124   hilo_access mf;
 125   hilo_access op;
 126 } hilo_history;
 127
 128
 129
 130
 131 /* Integer ALU operations: */
 132
 133 #include "sim-alu.h"
 134
 135 #define ALU32_END(ANS) \
 136   if (ALU32_HAD_OVERFLOW) \
 137     SignalExceptionIntegerOverflow (); \
 138   (ANS) = (signed32) ALU32_OVERFLOW_RESULT
 139
 140
 141 #define ALU64_END(ANS) \
 142   if (ALU64_HAD_OVERFLOW) \
 143     SignalExceptionIntegerOverflow (); \
 144   (ANS) = ALU64_OVERFLOW_RESULT;
 145
 146
 147
 148
 149
 150 /* The following is probably not used for MIPS IV onwards: */
 151 /* Slots for delayed register updates. For the moment we just have a
 152    fixed number of slots (rather than a more generic, dynamic
 153    system). This keeps the simulator fast. However, we only allow
 154    for the register update to be delayed for a single instruction
 155    cycle. */
 156 #define PSLOTS (8) /* Maximum number of instruction cycles */
 157
 158 typedef struct _pending_write_queue {
 159   int in;
 160   int out;
 161   int total;
 162   int slot_delay[PSLOTS];
 163   int slot_size[PSLOTS];
 164   int slot_bit[PSLOTS];
 165   void *slot_dest[PSLOTS];
 166   unsigned64 slot_value[PSLOTS];
 167 } pending_write_queue;
 168
 169 #ifndef PENDING_TRACE
 170 #define PENDING_TRACE 0
 171 #endif
 172 #define PENDING_IN ((CPU)->pending.in)
 173 #define PENDING_OUT ((CPU)->pending.out)
 174 #define PENDING_TOTAL ((CPU)->pending.total)
 175 #define PENDING_SLOT_SIZE ((CPU)->pending.slot_size)
 176 #define PENDING_SLOT_BIT ((CPU)->pending.slot_bit)
 177 #define PENDING_SLOT_DELAY ((CPU)->pending.slot_delay)
 178 #define PENDING_SLOT_DEST ((CPU)->pending.slot_dest)
 179 #define PENDING_SLOT_VALUE ((CPU)->pending.slot_value)
 180
 181 /* Invalidate the pending write queue, all pending writes are
 182    discarded. */
 183
 184 #define PENDING_INVALIDATE() \
 185 memset (&(CPU)->pending, 0, sizeof ((CPU)->pending))
 186
 187 /* Schedule a write to DEST for N cycles time.  For 64 bit
 188    destinations, schedule two writes.  For floating point registers,
 189    the caller should schedule a write to both the dest register and
 190    the FPR_STATE register.  When BIT is non-negative, only BIT of DEST
 191    is updated. */
 192
 193 #define PENDING_SCHED(DEST,VAL,DELAY,BIT)                               \
 194   do {                                                                  \
 195     if (PENDING_SLOT_DEST[PENDING_IN] != NULL)                          \
 196       sim_engine_abort (SD, CPU, cia,                                   \
 197                         "PENDING_SCHED - buffer overflow\n");           \
 198     if (PENDING_TRACE)                                                  \
 199       sim_io_eprintf (SD, "PENDING_SCHED - 0x%lx - dest 0x%lx, val 0x%lx, bit %d, size %d, pending_in %d, pending_out %d, pending_total %d\n",                  \
 200                       (unsigned long) cia, (unsigned long) &(DEST),     \
 201                       (unsigned long) (VAL), (BIT), (int) sizeof (DEST),\
 202                       PENDING_IN, PENDING_OUT, PENDING_TOTAL);          \
 203     PENDING_SLOT_DELAY[PENDING_IN] = (DELAY) + 1;                       \
 204     PENDING_SLOT_DEST[PENDING_IN] = &(DEST);                            \
 205     PENDING_SLOT_VALUE[PENDING_IN] = (VAL);                             \
 206     PENDING_SLOT_SIZE[PENDING_IN] = sizeof (DEST);                      \
 207     PENDING_SLOT_BIT[PENDING_IN] = (BIT);                               \
 208     PENDING_IN = (PENDING_IN + 1) % PSLOTS;                             \
 209     PENDING_TOTAL += 1;                                                 \
 210   } while (0)
 211
 212 #define PENDING_WRITE(DEST,VAL,DELAY) PENDING_SCHED(DEST,VAL,DELAY,-1)
 213 #define PENDING_BIT(DEST,VAL,DELAY,BIT) PENDING_SCHED(DEST,VAL,DELAY,BIT)
 214
 215 #define PENDING_TICK() pending_tick (SD, CPU, cia)
 216
 217 #define PENDING_FLUSH() abort () /* think about this one */
 218 #define PENDING_FP() abort () /* think about this one */
 219
 220 /* For backward compatibility */
 221 #define PENDING_FILL(R,VAL)                                             \
 222 do {                                                                    \
 223   if ((R) >= FGR_BASE && (R) < FGR_BASE + NR_FGR)                       \
 224     {                                                                   \
 225       PENDING_SCHED(FGR[(R) - FGR_BASE], VAL, 1, -1);                   \
 226       PENDING_SCHED(FPR_STATE[(R) - FGR_BASE], fmt_uninterpreted, 1, -1); \
 227     }                                                                   \
 228   else                                                                  \
 229     PENDING_SCHED(GPR[(R)], VAL, 1, -1);                                \
 230 } while (0)
 231
 232
 233 enum float_operation
 234   {
 235     FLOP_ADD,    FLOP_SUB,    FLOP_MUL,    FLOP_MADD,
 236     FLOP_MSUB,   FLOP_MAX=10, FLOP_MIN,    FLOP_ABS,
 237     FLOP_ITOF0=14, FLOP_FTOI0=18, FLOP_NEG=23
 238   };
 239
 240
 241 /* The internal representation of an MDMX accumulator.
 242    Note that 24 and 48 bit accumulator elements are represented in
 243    32 or 64 bits.  Since the accumulators are 2's complement with
 244    overflow suppressed, high-order bits can be ignored in most contexts.  */
 245
 246 typedef signed32 signed24;
 247 typedef signed64 signed48;
 248
 249 typedef union {
 250   signed24  ob[8];
 251   signed48  qh[4];
 252 } MDMX_accumulator;
 253
 254
 255 /* Conventional system arguments.  */
 256 #define SIM_STATE  sim_cpu *cpu, address_word cia
 257 #define SIM_ARGS   CPU, cia
 258
 259 struct _sim_cpu {
 260
 261
 262   /* The following are internal simulator state variables: */
 263   address_word dspc;  /* delay-slot PC */
 264 #define DSPC ((CPU)->dspc)
 265
 266 #define DELAY_SLOT(TARGET) NIA = delayslot32 (SD_, (TARGET))
 267 #define NULLIFY_NEXT_INSTRUCTION() NIA = nullify_next_insn32 (SD_)
 268
 269
 270   /* State of the simulator */
 271   unsigned int state;
 272   unsigned int dsstate;
 273 #define STATE ((CPU)->state)
 274 #define DSSTATE ((CPU)->dsstate)
 275
 276 /* Flags in the "state" variable: */
 277 #define simHALTEX       (1 << 2)  /* 0 = run; 1 = halt on exception */
 278 #define simHALTIN       (1 << 3)  /* 0 = run; 1 = halt on interrupt */
 279 #define simTRACE        (1 << 8)  /* 0 = do nothing; 1 = trace address activity */
 280 #define simPCOC0        (1 << 17) /* COC[1] from current */
 281 #define simPCOC1        (1 << 18) /* COC[1] from previous */
 282 #define simDELAYSLOT    (1 << 24) /* 0 = do nothing; 1 = delay slot entry exists */
 283 #define simSKIPNEXT     (1 << 25) /* 0 = do nothing; 1 = skip instruction */
 284 #define simSIGINT       (1 << 28)  /* 0 = do nothing; 1 = SIGINT has occured */
 285 #define simJALDELAYSLOT (1 << 29) /* 1 = in jal delay slot */
 286
 287 #ifndef ENGINE_ISSUE_PREFIX_HOOK
 288 #define ENGINE_ISSUE_PREFIX_HOOK() \
 289   { \
 290     /* Perform any pending writes */ \
 291     PENDING_TICK(); \
 292     /* Set previous flag, depending on current: */ \
 293     if (STATE & simPCOC0) \
 294      STATE |= simPCOC1; \
 295     else \
 296      STATE &= ~simPCOC1; \
 297     /* and update the current value: */ \
 298     if (GETFCC(0)) \
 299      STATE |= simPCOC0; \
 300     else \
 301      STATE &= ~simPCOC0; \
 302   }
 303 #endif /* ENGINE_ISSUE_PREFIX_HOOK */
 304
 305
 306 /* This is nasty, since we have to rely on matching the register
 307    numbers used by GDB. Unfortunately, depending on the MIPS target
 308    GDB uses different register numbers. We cannot just include the
 309    relevant "gdb/tm.h" link, since GDB may not be configured before
 310    the sim world, and also the GDB header file requires too much other
 311    state. */
 312
 313 #ifndef TM_MIPS_H
 314 #define LAST_EMBED_REGNUM (96)
 315 #define NUM_REGS (LAST_EMBED_REGNUM + 1)
 316
 317 #define FP0_REGNUM 38           /* Floating point register 0 (single float) */
 318 #define FCRCS_REGNUM 70         /* FP control/status */
 319 #define FCRIR_REGNUM 71         /* FP implementation/revision */
 320 #endif
 321
 322
 323 /* To keep this default simulator simple, and fast, we use a direct
 324    vector of registers. The internal simulator engine then uses
 325    manifests to access the correct slot. */
 326
 327   unsigned_word registers[LAST_EMBED_REGNUM + 1];
 328
 329   int register_widths[NUM_REGS];
 330 #define REGISTERS       ((CPU)->registers)
 331
 332 #define GPR     (&REGISTERS[0])
 333 #define GPR_SET(N,VAL) (REGISTERS[(N)] = (VAL))
 334
 335 #define LO      (REGISTERS[33])
 336 #define HI      (REGISTERS[34])
 337 #define PCIDX   37
 338 #define PC      (REGISTERS[PCIDX])
 339 #define CAUSE   (REGISTERS[36])
 340 #define SRIDX   (32)
 341 #define SR      (REGISTERS[SRIDX])      /* CPU status register */
 342 #define FCR0IDX  (71)
 343 #define FCR0    (REGISTERS[FCR0IDX])    /* really a 32bit register */
 344 #define FCR31IDX (70)
 345 #define FCR31   (REGISTERS[FCR31IDX])   /* really a 32bit register */
 346 #define FCSR    (FCR31)
 347 #define Debug   (REGISTERS[86])
 348 #define DEPC    (REGISTERS[87])
 349 #define EPC     (REGISTERS[88])
 350 #define ACX     (REGISTERS[89])
 351
 352 #define AC0LOIDX        (33)    /* Must be the same register as LO */
 353 #define AC0HIIDX        (34)    /* Must be the same register as HI */
 354 #define AC1LOIDX        (90)
 355 #define AC1HIIDX        (91)
 356 #define AC2LOIDX        (92)
 357 #define AC2HIIDX        (93)
 358 #define AC3LOIDX        (94)
 359 #define AC3HIIDX        (95)
 360
 361 #define DSPLO(N)        (REGISTERS[DSPLO_REGNUM[N]])
 362 #define DSPHI(N)        (REGISTERS[DSPHI_REGNUM[N]])
 363
 364 #define DSPCRIDX        (96)    /* DSP control register */
 365 #define DSPCR           (REGISTERS[DSPCRIDX])
 366
 367 #define DSPCR_POS_SHIFT         (0)
 368 #define DSPCR_POS_MASK          (0x3f)
 369 #define DSPCR_POS_SMASK         (DSPCR_POS_MASK << DSPCR_POS_SHIFT)
 370
 371 #define DSPCR_SCOUNT_SHIFT      (7)
 372 #define DSPCR_SCOUNT_MASK       (0x3f)
 373 #define DSPCR_SCOUNT_SMASK      (DSPCR_SCOUNT_MASK << DSPCR_SCOUNT_SHIFT)
 374
 375 #define DSPCR_CARRY_SHIFT       (13)
 376 #define DSPCR_CARRY_MASK        (1)
 377 #define DSPCR_CARRY_SMASK       (DSPCR_CARRY_MASK << DSPCR_CARRY_SHIFT)
 378 #define DSPCR_CARRY             (1 << DSPCR_CARRY_SHIFT)
 379
 380 #define DSPCR_EFI_SHIFT         (14)
 381 #define DSPCR_EFI_MASK          (1)
 382 #define DSPCR_EFI_SMASK         (DSPCR_EFI_MASK << DSPCR_EFI_SHIFT)
 383 #define DSPCR_EFI               (1 << DSPCR_EFI_MASK)
 384
 385 #define DSPCR_OUFLAG_SHIFT      (16)
 386 #define DSPCR_OUFLAG_MASK       (0xff)
 387 #define DSPCR_OUFLAG_SMASK      (DSPCR_OUFLAG_MASK << DSPCR_OUFLAG_SHIFT)
 388 #define DSPCR_OUFLAG4           (1 << (DSPCR_OUFLAG_SHIFT + 4))
 389 #define DSPCR_OUFLAG5           (1 << (DSPCR_OUFLAG_SHIFT + 5))
 390 #define DSPCR_OUFLAG6           (1 << (DSPCR_OUFLAG_SHIFT + 6))
 391 #define DSPCR_OUFLAG7           (1 << (DSPCR_OUFLAG_SHIFT + 7))
 392
 393 #define DSPCR_CCOND_SHIFT       (24)
 394 #define DSPCR_CCOND_MASK        (0xf)
 395 #define DSPCR_CCOND_SMASK       (DSPCR_CCOND_MASK << DSPCR_CCOND_SHIFT)
 396
 397   /* All internal state modified by signal_exception() that may need to be
 398      rolled back for passing moment-of-exception image back to gdb. */
 399   unsigned_word exc_trigger_registers[LAST_EMBED_REGNUM + 1];
 400   unsigned_word exc_suspend_registers[LAST_EMBED_REGNUM + 1];
 401   int exc_suspended;
 402
 403 #define SIM_CPU_EXCEPTION_TRIGGER(SD,CPU,CIA) mips_cpu_exception_trigger(SD,CPU,CIA)
 404 #define SIM_CPU_EXCEPTION_SUSPEND(SD,CPU,EXC) mips_cpu_exception_suspend(SD,CPU,EXC)
 405 #define SIM_CPU_EXCEPTION_RESUME(SD,CPU,EXC) mips_cpu_exception_resume(SD,CPU,EXC)
 406
 407   unsigned_word c0_config_reg;
 408 #define C0_CONFIG ((CPU)->c0_config_reg)
 409
 410 /* The following are pseudonyms for standard registers */
 411 #define ZERO    (REGISTERS[0])
 412 #define V0      (REGISTERS[2])
 413 #define A0      (REGISTERS[4])
 414 #define A1      (REGISTERS[5])
 415 #define A2      (REGISTERS[6])
 416 #define A3      (REGISTERS[7])
 417 #define T8IDX   24
 418 #define T8      (REGISTERS[T8IDX])
 419 #define SPIDX   29
 420 #define SP      (REGISTERS[SPIDX])
 421 #define RAIDX   31
 422 #define RA      (REGISTERS[RAIDX])
 423
 424   /* While space is allocated in the main registers arrray for some of
 425      the COP0 registers, that space isn't sufficient.  Unknown COP0
 426      registers overflow into the array below */
 427
 428 #define NR_COP0_GPR     32
 429   unsigned_word cop0_gpr[NR_COP0_GPR];
 430 #define COP0_GPR        ((CPU)->cop0_gpr)
 431 #define COP0_BADVADDR   (COP0_GPR[8])
 432
 433   /* While space is allocated for the floating point registers in the
 434      main registers array, they are stored separatly.  This is because
 435      their size may not necessarily match the size of either the
 436      general-purpose or system specific registers.  */
 437 #define NR_FGR    (32)
 438 #define FGR_BASE  FP0_REGNUM
 439   fp_word fgr[NR_FGR];
 440 #define FGR       ((CPU)->fgr)
 441
 442   /* Keep the current format state for each register: */
 443   FP_formats fpr_state[32];
 444 #define FPR_STATE ((CPU)->fpr_state)
 445
 446   pending_write_queue pending;
 447
 448   /* The MDMX accumulator (used only for MDMX ASE).  */
 449   MDMX_accumulator acc;
 450 #define ACC             ((CPU)->acc)
 451
 452   /* LLBIT = Load-Linked bit. A bit of "virtual" state used by atomic
 453      read-write instructions. It is set when a linked load occurs. It
 454      is tested and cleared by the conditional store. It is cleared
 455      (during other CPU operations) when a store to the location would
 456      no longer be atomic. In particular, it is cleared by exception
 457      return instructions. */
 458   int llbit;
 459 #define LLBIT ((CPU)->llbit)
 460
 461
 462 /* The HIHISTORY and LOHISTORY timestamps are used to ensure that
 463    corruptions caused by using the HI or LO register too close to a
 464    following operation is spotted. See mips.igen for more details. */
 465
 466   hilo_history hi_history;
 467 #define HIHISTORY (&(CPU)->hi_history)
 468   hilo_history lo_history;
 469 #define LOHISTORY (&(CPU)->lo_history)
 470
 471
 472   sim_cpu_base base;
 473 };
 474
 475 extern void mips_sim_close (SIM_DESC sd, int quitting);
 476 #define SIM_CLOSE_HOOK(...) mips_sim_close (__VA_ARGS__)
 477
 478 /* FIXME: At present much of the simulator is still static */
 479 struct mips_sim_state {
 480   /* microMIPS ISA mode.  */
 481   int isa_mode;
 482 };
 483 #define MIPS_SIM_STATE(sd) ((struct mips_sim_state *) STATE_ARCH_DATA (sd))
 484
 485
 486 /* Status information: */
 487
 488 /* TODO : these should be the bitmasks for these bits within the
 489    status register. At the moment the following are VR4300
 490    bit-positions: */
 491 #define status_KSU_mask  (0x18)         /* mask for KSU bits */
 492 #define status_KSU_shift (3)            /* shift for field */
 493 #define ksu_kernel       (0x0)
 494 #define ksu_supervisor   (0x1)
 495 #define ksu_user         (0x2)
 496 #define ksu_unknown      (0x3)
 497
 498 #define SR_KSU           ((SR & status_KSU_mask) >> status_KSU_shift)
 499
 500 #define status_IE        (1 <<  0)      /* Interrupt enable */
 501 #define status_EIE       (1 << 16)      /* Enable Interrupt Enable */
 502 #define status_EXL       (1 <<  1)      /* Exception level */
 503 #define status_RE        (1 << 25)      /* Reverse Endian in user mode */
 504 #define status_FR        (1 << 26)      /* enables MIPS III additional FP registers */
 505 #define status_SR        (1 << 20)      /* soft reset or NMI */
 506 #define status_BEV       (1 << 22)      /* Location of general exception vectors */
 507 #define status_TS        (1 << 21)      /* TLB shutdown has occurred */
 508 #define status_ERL       (1 <<  2)      /* Error level */
 509 #define status_IM7       (1 << 15)      /* Timer Interrupt Mask */
 510 #define status_RP        (1 << 27)      /* Reduced Power mode */
 511
 512 /* Specializations for TX39 family */
 513 #define status_IEc       (1 << 0)       /* Interrupt enable (current) */
 514 #define status_KUc       (1 << 1)       /* Kernel/User mode */
 515 #define status_IEp       (1 << 2)       /* Interrupt enable (previous) */
 516 #define status_KUp       (1 << 3)       /* Kernel/User mode */
 517 #define status_IEo       (1 << 4)       /* Interrupt enable (old) */
 518 #define status_KUo       (1 << 5)       /* Kernel/User mode */
 519 #define status_IM_mask   (0xff)         /* Interrupt mask */
 520 #define status_IM_shift  (8)
 521 #define status_NMI       (1 << 20)      /* NMI */
 522 #define status_NMI       (1 << 20)      /* NMI */
 523
 524 /* Status bits used by MIPS32/MIPS64.  */
 525 #define status_UX        (1 <<  5)      /* 64-bit user addrs */
 526 #define status_SX        (1 <<  6)      /* 64-bit supervisor addrs */
 527 #define status_KX        (1 <<  7)      /* 64-bit kernel addrs */
 528 #define status_TS        (1 << 21)      /* TLB shutdown has occurred */
 529 #define status_PX        (1 << 23)      /* Enable 64 bit operations */
 530 #define status_MX        (1 << 24)      /* Enable MDMX resources */
 531 #define status_CU0       (1 << 28)      /* Coprocessor 0 usable */
 532 #define status_CU1       (1 << 29)      /* Coprocessor 1 usable */
 533 #define status_CU2       (1 << 30)      /* Coprocessor 2 usable */
 534 #define status_CU3       (1 << 31)      /* Coprocessor 3 usable */
 535 /* Bits reserved for implementations:  */
 536 #define status_SBX       (1 << 16)      /* Enable SiByte SB-1 extensions.  */
 537
 538 #define cause_BD ((unsigned)1 << 31)    /* L1 Exception in branch delay slot */
 539 #define cause_BD2         (1 << 30)     /* L2 Exception in branch delay slot */
 540 #define cause_CE_mask     0x30000000    /* Coprocessor exception */
 541 #define cause_CE_shift    28
 542 #define cause_EXC2_mask   0x00070000
 543 #define cause_EXC2_shift  16
 544 #define cause_IP7         (1 << 15)     /* Interrupt pending */
 545 #define cause_SIOP        (1 << 12)     /* SIO pending */
 546 #define cause_IP3         (1 << 11)     /* Int 0 pending */
 547 #define cause_IP2         (1 << 10)     /* Int 1 pending */
 548
 549 #define cause_EXC_mask  (0x1c)          /* Exception code */
 550 #define cause_EXC_shift (2)
 551
 552 #define cause_SW0       (1 << 8)        /* Software interrupt 0 */
 553 #define cause_SW1       (1 << 9)        /* Software interrupt 1 */
 554 #define cause_IP_mask   (0x3f)          /* Interrupt pending field */
 555 #define cause_IP_shift  (10)
 556
 557 #define cause_set_EXC(x)  CAUSE = (CAUSE & ~cause_EXC_mask)  | ((x << cause_EXC_shift)  & cause_EXC_mask)
 558 #define cause_set_EXC2(x) CAUSE = (CAUSE & ~cause_EXC2_mask) | ((x << cause_EXC2_shift) & cause_EXC2_mask)
 559
 560
 561 /* NOTE: We keep the following status flags as bit values (1 for true,
 562    0 for false). This allows them to be used in binary boolean
 563    operations without worrying about what exactly the non-zero true
 564    value is. */
 565
 566 /* UserMode */
 567 #ifdef SUBTARGET_R3900
 568 #define UserMode        ((SR & status_KUc) ? 1 : 0)
 569 #else
 570 #define UserMode        ((((SR & status_KSU_mask) >> status_KSU_shift) == ksu_user) ? 1 : 0)
 571 #endif /* SUBTARGET_R3900 */
 572
 573 /* BigEndianMem */
 574 /* Hardware configuration. Affects endianness of LoadMemory and
 575    StoreMemory and the endianness of Kernel and Supervisor mode
 576    execution. The value is 0 for little-endian; 1 for big-endian. */
 577 #define BigEndianMem    (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
 578 /*(state & simBE) ? 1 : 0)*/
 579
 580 /* ReverseEndian */
 581 /* This mode is selected if in User mode with the RE bit being set in
 582    SR (Status Register). It reverses the endianness of load and store
 583    instructions. */
 584 #define ReverseEndian   (((SR & status_RE) && UserMode) ? 1 : 0)
 585
 586 /* BigEndianCPU */
 587 /* The endianness for load and store instructions (0=little;1=big). In
 588    User mode this endianness may be switched by setting the state_RE
 589    bit in the SR register. Thus, BigEndianCPU may be computed as
 590    (BigEndianMem EOR ReverseEndian). */
 591 #define BigEndianCPU    (BigEndianMem ^ ReverseEndian) /* Already bits */
 592
 593
 594
 595 /* Exceptions: */
 596
 597 /* NOTE: These numbers depend on the processor architecture being
 598    simulated: */
 599 enum ExceptionCause {
 600   Interrupt               = 0,
 601   TLBModification         = 1,
 602   TLBLoad                 = 2,
 603   TLBStore                = 3,
 604   AddressLoad             = 4,
 605   AddressStore            = 5,
 606   InstructionFetch        = 6,
 607   DataReference           = 7,
 608   SystemCall              = 8,
 609   BreakPoint              = 9,
 610   ReservedInstruction     = 10,
 611   CoProcessorUnusable     = 11,
 612   IntegerOverflow         = 12,    /* Arithmetic overflow (IDT monitor raises SIGFPE) */
 613   Trap                    = 13,
 614   FPE                     = 15,
 615   DebugBreakPoint         = 16,    /* Impl. dep. in MIPS32/MIPS64.  */
 616   MDMX                    = 22,
 617   Watch                   = 23,
 618   MCheck                  = 24,
 619   CacheErr                = 30,
 620   NMIReset                = 31,    /* Reserved in MIPS32/MIPS64.  */
 621
 622
 623 /* The following exception code is actually private to the simulator
 624    world. It is *NOT* a processor feature, and is used to signal
 625    run-time errors in the simulator. */
 626   SimulatorFault          = 0xFFFFFFFF
 627 };
 628
 629 #define TLB_REFILL  (0)
 630 #define TLB_INVALID (1)
 631
 632
 633 /* The following break instructions are reserved for use by the
 634    simulator.  The first is used to halt the simulation.  The second
 635    is used by gdb for break-points.  NOTE: Care must be taken, since
 636    this value may be used in later revisions of the MIPS ISA. */
 637 #define HALT_INSTRUCTION_MASK   (0x03FFFFC0)
 638
 639 #define HALT_INSTRUCTION        (0x03ff000d)
 640 #define HALT_INSTRUCTION2       (0x0000ffcd)
 641
 642
 643 #define BREAKPOINT_INSTRUCTION  (0x0005000d)
 644 #define BREAKPOINT_INSTRUCTION2 (0x0000014d)
 645
 646
 647
 648 void interrupt_event (SIM_DESC sd, void *data);
 649
 650 void signal_exception (SIM_DESC sd, sim_cpu *cpu, address_word cia, int exception, ...);
 651 #define SignalException(exc,instruction)     signal_exception (SD, CPU, cia, (exc), (instruction))
 652 #define SignalExceptionInterrupt(level)      signal_exception (SD, CPU, cia, Interrupt, level)
 653 #define SignalExceptionInstructionFetch()    signal_exception (SD, CPU, cia, InstructionFetch)
 654 #define SignalExceptionAddressStore()        signal_exception (SD, CPU, cia, AddressStore)
 655 #define SignalExceptionAddressLoad()         signal_exception (SD, CPU, cia, AddressLoad)
 656 #define SignalExceptionDataReference()       signal_exception (SD, CPU, cia, DataReference)
 657 #define SignalExceptionSimulatorFault(buf)   signal_exception (SD, CPU, cia, SimulatorFault, buf)
 658 #define SignalExceptionFPE()                 signal_exception (SD, CPU, cia, FPE)
 659 #define SignalExceptionIntegerOverflow()     signal_exception (SD, CPU, cia, IntegerOverflow)
 660 #define SignalExceptionCoProcessorUnusable(cop) signal_exception (SD, CPU, cia, CoProcessorUnusable)
 661 #define SignalExceptionNMIReset()            signal_exception (SD, CPU, cia, NMIReset)
 662 #define SignalExceptionTLBRefillStore()      signal_exception (SD, CPU, cia, TLBStore, TLB_REFILL)
 663 #define SignalExceptionTLBRefillLoad()       signal_exception (SD, CPU, cia, TLBLoad, TLB_REFILL)
 664 #define SignalExceptionTLBInvalidStore()     signal_exception (SD, CPU, cia, TLBStore, TLB_INVALID)
 665 #define SignalExceptionTLBInvalidLoad()      signal_exception (SD, CPU, cia, TLBLoad, TLB_INVALID)
 666 #define SignalExceptionTLBModification()     signal_exception (SD, CPU, cia, TLBModification)
 667 #define SignalExceptionMDMX()                signal_exception (SD, CPU, cia, MDMX)
 668 #define SignalExceptionWatch()               signal_exception (SD, CPU, cia, Watch)
 669 #define SignalExceptionMCheck()              signal_exception (SD, CPU, cia, MCheck)
 670 #define SignalExceptionCacheErr()            signal_exception (SD, CPU, cia, CacheErr)
 671
 672 /* Co-processor accesses */
 673
 674 /* XXX FIXME: For now, assume that FPU (cp1) is always usable.  */
 675 #define COP_Usable(coproc_num)          (coproc_num == 1)
 676
 677 void cop_lw  (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg, unsigned int memword);
 678 void cop_ld  (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg, uword64 memword);
 679 unsigned int cop_sw (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg);
 680 uword64 cop_sd (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg);
 681
 682 #define COP_LW(coproc_num,coproc_reg,memword) \
 683 cop_lw (SD, CPU, cia, coproc_num, coproc_reg, memword)
 684 #define COP_LD(coproc_num,coproc_reg,memword) \
 685 cop_ld (SD, CPU, cia, coproc_num, coproc_reg, memword)
 686 #define COP_SW(coproc_num,coproc_reg) \
 687 cop_sw (SD, CPU, cia, coproc_num, coproc_reg)
 688 #define COP_SD(coproc_num,coproc_reg) \
 689 cop_sd (SD, CPU, cia, coproc_num, coproc_reg)
 690
 691
 692 void decode_coproc (SIM_DESC sd, sim_cpu *cpu, address_word cia,
 693                     unsigned int instruction, int coprocnum, CP0_operation op,
 694                     int rt, int rd, int sel);
 695 #define DecodeCoproc(instruction,coprocnum,op,rt,rd,sel) \
 696   decode_coproc (SD, CPU, cia, (instruction), (coprocnum), (op), \
 697                  (rt), (rd), (sel))
 698
 699 int sim_monitor (SIM_DESC sd, sim_cpu *cpu, address_word cia, unsigned int arg);
 700
 701
 702 /* FPR access.  */
 703 unsigned64 value_fpr (SIM_STATE, int fpr, FP_formats);
 704 #define ValueFPR(FPR,FMT) value_fpr (SIM_ARGS, (FPR), (FMT))
 705 void store_fpr (SIM_STATE, int fpr, FP_formats fmt, unsigned64 value);
 706 #define StoreFPR(FPR,FMT,VALUE) store_fpr (SIM_ARGS, (FPR), (FMT), (VALUE))
 707 unsigned64 ps_lower (SIM_STATE, unsigned64 op);
 708 #define PSLower(op) ps_lower (SIM_ARGS, op)
 709 unsigned64 ps_upper (SIM_STATE, unsigned64 op);
 710 #define PSUpper(op) ps_upper (SIM_ARGS, op)
 711 unsigned64 pack_ps (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats from);
 712 #define PackPS(op1,op2) pack_ps (SIM_ARGS, op1, op2, fmt_single)
 713
 714
 715 /* FCR access.  */
 716 unsigned_word value_fcr (SIM_STATE, int fcr);
 717 #define ValueFCR(FCR) value_fcr (SIM_ARGS, (FCR))
 718 void store_fcr (SIM_STATE, int fcr, unsigned_word value);
 719 #define StoreFCR(FCR,VALUE) store_fcr (SIM_ARGS, (FCR), (VALUE))
 720 void test_fcsr (SIM_STATE);
 721 #define TestFCSR() test_fcsr (SIM_ARGS)
 722
 723
 724 /* FPU operations.  */
 725 void fp_cmp (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt, int abs, int cond, int cc);
 726 #define Compare(op1,op2,fmt,cond,cc) fp_cmp(SIM_ARGS, op1, op2, fmt, 0, cond, cc)
 727 unsigned64 fp_abs (SIM_STATE, unsigned64 op, FP_formats fmt);
 728 #define AbsoluteValue(op,fmt) fp_abs(SIM_ARGS, op, fmt)
 729 unsigned64 fp_neg (SIM_STATE, unsigned64 op, FP_formats fmt);
 730 #define Negate(op,fmt) fp_neg(SIM_ARGS, op, fmt)
 731 unsigned64 fp_add (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 732 #define Add(op1,op2,fmt) fp_add(SIM_ARGS, op1, op2, fmt)
 733 unsigned64 fp_sub (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 734 #define Sub(op1,op2,fmt) fp_sub(SIM_ARGS, op1, op2, fmt)
 735 unsigned64 fp_mul (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 736 #define Multiply(op1,op2,fmt) fp_mul(SIM_ARGS, op1, op2, fmt)
 737 unsigned64 fp_div (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 738 #define Divide(op1,op2,fmt) fp_div(SIM_ARGS, op1, op2, fmt)
 739 unsigned64 fp_recip (SIM_STATE, unsigned64 op, FP_formats fmt);
 740 #define Recip(op,fmt) fp_recip(SIM_ARGS, op, fmt)
 741 unsigned64 fp_sqrt (SIM_STATE, unsigned64 op, FP_formats fmt);
 742 #define SquareRoot(op,fmt) fp_sqrt(SIM_ARGS, op, fmt)
 743 unsigned64 fp_rsqrt (SIM_STATE, unsigned64 op, FP_formats fmt);
 744 #define RSquareRoot(op,fmt) fp_rsqrt(SIM_ARGS, op, fmt)
 745 unsigned64 fp_madd (SIM_STATE, unsigned64 op1, unsigned64 op2,
 746                     unsigned64 op3, FP_formats fmt);
 747 #define MultiplyAdd(op1,op2,op3,fmt) fp_madd(SIM_ARGS, op1, op2, op3, fmt)
 748 unsigned64 fp_msub (SIM_STATE, unsigned64 op1, unsigned64 op2,
 749                     unsigned64 op3, FP_formats fmt);
 750 #define MultiplySub(op1,op2,op3,fmt) fp_msub(SIM_ARGS, op1, op2, op3, fmt)
 751 unsigned64 fp_nmadd (SIM_STATE, unsigned64 op1, unsigned64 op2,
 752                      unsigned64 op3, FP_formats fmt);
 753 #define NegMultiplyAdd(op1,op2,op3,fmt) fp_nmadd(SIM_ARGS, op1, op2, op3, fmt)
 754 unsigned64 fp_nmsub (SIM_STATE, unsigned64 op1, unsigned64 op2,
 755                      unsigned64 op3, FP_formats fmt);
 756 #define NegMultiplySub(op1,op2,op3,fmt) fp_nmsub(SIM_ARGS, op1, op2, op3, fmt)
 757 unsigned64 convert (SIM_STATE, int rm, unsigned64 op, FP_formats from, FP_formats to);
 758 #define Convert(rm,op,from,to) convert (SIM_ARGS, rm, op, from, to)
 759 unsigned64 convert_ps (SIM_STATE, int rm, unsigned64 op, FP_formats from,
 760                        FP_formats to);
 761 #define ConvertPS(rm,op,from,to) convert_ps (SIM_ARGS, rm, op, from, to)
 762
 763
 764 /* MIPS-3D ASE operations.  */
 765 #define CompareAbs(op1,op2,fmt,cond,cc) \
 766 fp_cmp(SIM_ARGS, op1, op2, fmt, 1, cond, cc)
 767 unsigned64 fp_add_r (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 768 #define AddR(op1,op2,fmt) fp_add_r(SIM_ARGS, op1, op2, fmt)
 769 unsigned64 fp_mul_r (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 770 #define MultiplyR(op1,op2,fmt) fp_mul_r(SIM_ARGS, op1, op2, fmt)
 771 unsigned64 fp_recip1 (SIM_STATE, unsigned64 op, FP_formats fmt);
 772 #define Recip1(op,fmt) fp_recip1(SIM_ARGS, op, fmt)
 773 unsigned64 fp_recip2 (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 774 #define Recip2(op1,op2,fmt) fp_recip2(SIM_ARGS, op1, op2, fmt)
 775 unsigned64 fp_rsqrt1 (SIM_STATE, unsigned64 op, FP_formats fmt);
 776 #define RSquareRoot1(op,fmt) fp_rsqrt1(SIM_ARGS, op, fmt)
 777 unsigned64 fp_rsqrt2 (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 778 #define RSquareRoot2(op1,op2,fmt) fp_rsqrt2(SIM_ARGS, op1, op2, fmt)
 779
 780
 781 /* MDMX access.  */
 782
 783 typedef unsigned int MX_fmtsel;   /* MDMX format select field (5 bits).  */
 784 #define ob_fmtsel(sel) (((sel)<<1)|0x0)
 785 #define qh_fmtsel(sel) (((sel)<<2)|0x1)
 786
 787 #define fmt_mdmx fmt_uninterpreted
 788
 789 #define MX_VECT_AND  (0)
 790 #define MX_VECT_NOR  (1)
 791 #define MX_VECT_OR   (2)
 792 #define MX_VECT_XOR  (3)
 793 #define MX_VECT_SLL  (4)
 794 #define MX_VECT_SRL  (5)
 795 #define MX_VECT_ADD  (6)
 796 #define MX_VECT_SUB  (7)
 797 #define MX_VECT_MIN  (8)
 798 #define MX_VECT_MAX  (9)
 799 #define MX_VECT_MUL  (10)
 800 #define MX_VECT_MSGN (11)
 801 #define MX_VECT_SRA  (12)
 802 #define MX_VECT_ABSD (13)               /* SB-1 only.  */
 803 #define MX_VECT_AVG  (14)               /* SB-1 only.  */
 804
 805 unsigned64 mdmx_cpr_op (SIM_STATE, int op, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 806 #define MX_Add(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_ADD, op1, vt, fmtsel)
 807 #define MX_And(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_AND, op1, vt, fmtsel)
 808 #define MX_Max(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MAX, op1, vt, fmtsel)
 809 #define MX_Min(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MIN, op1, vt, fmtsel)
 810 #define MX_Msgn(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MSGN, op1, vt, fmtsel)
 811 #define MX_Mul(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MUL, op1, vt, fmtsel)
 812 #define MX_Nor(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_NOR, op1, vt, fmtsel)
 813 #define MX_Or(op1,vt,fmtsel)  mdmx_cpr_op(SIM_ARGS, MX_VECT_OR,  op1, vt, fmtsel)
 814 #define MX_ShiftLeftLogical(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SLL, op1, vt, fmtsel)
 815 #define MX_ShiftRightArith(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SRA, op1, vt, fmtsel)
 816 #define MX_ShiftRightLogical(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SRL, op1, vt, fmtsel)
 817 #define MX_Sub(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SUB, op1, vt, fmtsel)
 818 #define MX_Xor(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_XOR, op1, vt, fmtsel)
 819 #define MX_AbsDiff(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_ABSD, op1, vt, fmtsel)
 820 #define MX_Avg(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_AVG, op1, vt, fmtsel)
 821
 822 #define MX_C_EQ  0x1
 823 #define MX_C_LT  0x4
 824
 825 void mdmx_cc_op (SIM_STATE, int cond, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 826 #define MX_Comp(op1,cond,vt,fmtsel) mdmx_cc_op(SIM_ARGS, cond, op1, vt, fmtsel)
 827
 828 unsigned64 mdmx_pick_op (SIM_STATE, int tf, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 829 #define MX_Pick(tf,op1,vt,fmtsel) mdmx_pick_op(SIM_ARGS, tf, op1, vt, fmtsel)
 830
 831 #define MX_VECT_ADDA  (0)
 832 #define MX_VECT_ADDL  (1)
 833 #define MX_VECT_MULA  (2)
 834 #define MX_VECT_MULL  (3)
 835 #define MX_VECT_MULS  (4)
 836 #define MX_VECT_MULSL (5)
 837 #define MX_VECT_SUBA  (6)
 838 #define MX_VECT_SUBL  (7)
 839 #define MX_VECT_ABSDA (8)               /* SB-1 only.  */
 840
 841 void mdmx_acc_op (SIM_STATE, int op, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 842 #define MX_AddA(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_ADDA, op1, vt, fmtsel)
 843 #define MX_AddL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_ADDL, op1, vt, fmtsel)
 844 #define MX_MulA(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULA, op1, vt, fmtsel)
 845 #define MX_MulL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULL, op1, vt, fmtsel)
 846 #define MX_MulS(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULS, op1, vt, fmtsel)
 847 #define MX_MulSL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULSL, op1, vt, fmtsel)
 848 #define MX_SubA(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_SUBA, op1, vt, fmtsel)
 849 #define MX_SubL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_SUBL, op1, vt, fmtsel)
 850 #define MX_AbsDiffC(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_ABSDA, op1, vt, fmtsel)
 851
 852 #define MX_FMT_OB   (0)
 853 #define MX_FMT_QH   (1)
 854
 855 /* The following codes chosen to indicate the units of shift.  */
 856 #define MX_RAC_L    (0)
 857 #define MX_RAC_M    (1)
 858 #define MX_RAC_H    (2)
 859
 860 unsigned64 mdmx_rac_op (SIM_STATE, int, int);
 861 #define MX_RAC(op,fmt) mdmx_rac_op(SIM_ARGS, op, fmt)
 862
 863 void mdmx_wacl (SIM_STATE, int, unsigned64, unsigned64);
 864 #define MX_WACL(fmt,vs,vt) mdmx_wacl(SIM_ARGS, fmt, vs, vt)
 865 void mdmx_wach (SIM_STATE, int, unsigned64);
 866 #define MX_WACH(fmt,vs) mdmx_wach(SIM_ARGS, fmt, vs)
 867
 868 #define MX_RND_AS   (0)
 869 #define MX_RND_AU   (1)
 870 #define MX_RND_ES   (2)
 871 #define MX_RND_EU   (3)
 872 #define MX_RND_ZS   (4)
 873 #define MX_RND_ZU   (5)
 874
 875 unsigned64 mdmx_round_op (SIM_STATE, int, int, MX_fmtsel);
 876 #define MX_RNAS(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_AS, vt, fmt)
 877 #define MX_RNAU(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_AU, vt, fmt)
 878 #define MX_RNES(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_ES, vt, fmt)
 879 #define MX_RNEU(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_EU, vt, fmt)
 880 #define MX_RZS(vt,fmt)  mdmx_round_op(SIM_ARGS, MX_RND_ZS, vt, fmt)
 881 #define MX_RZU(vt,fmt)  mdmx_round_op(SIM_ARGS, MX_RND_ZU, vt, fmt)
 882
 883 unsigned64 mdmx_shuffle (SIM_STATE, int, unsigned64, unsigned64);
 884 #define MX_SHFL(shop,op1,op2) mdmx_shuffle(SIM_ARGS, shop, op1, op2)
 885
 886
 887
 888 /* Memory accesses */
 889
 890 /* The following are generic to all versions of the MIPS architecture
 891    to date: */
 892
 893 #define isINSTRUCTION   (1 == 0) /* FALSE */
 894 #define isDATA          (1 == 1) /* TRUE */
 895 #define isLOAD          (1 == 0) /* FALSE */
 896 #define isSTORE         (1 == 1) /* TRUE */
 897 #define isREAL          (1 == 0) /* FALSE */
 898 #define isRAW           (1 == 1) /* TRUE */
 899 /* The parameter HOST (isTARGET / isHOST) is ignored */
 900 #define isTARGET        (1 == 0) /* FALSE */
 901 /* #define isHOST          (1 == 1) TRUE */
 902
 903 /* The "AccessLength" specifications for Loads and Stores. NOTE: This
 904    is the number of bytes minus 1. */
 905 #define AccessLength_BYTE       (0)
 906 #define AccessLength_HALFWORD   (1)
 907 #define AccessLength_TRIPLEBYTE (2)
 908 #define AccessLength_WORD       (3)
 909 #define AccessLength_QUINTIBYTE (4)
 910 #define AccessLength_SEXTIBYTE  (5)
 911 #define AccessLength_SEPTIBYTE  (6)
 912 #define AccessLength_DOUBLEWORD (7)
 913 #define AccessLength_QUADWORD   (15)
 914
 915 #define LOADDRMASK (WITH_TARGET_WORD_BITSIZE == 64 \
 916                     ? AccessLength_DOUBLEWORD /*7*/ \
 917                     : AccessLength_WORD /*3*/)
 918 #define PSIZE (WITH_TARGET_ADDRESS_BITSIZE)
 919
 920
 921 INLINE_SIM_MAIN (void) load_memory (SIM_DESC sd, sim_cpu *cpu, address_word cia, uword64* memvalp, uword64* memval1p, int CCA, unsigned int AccessLength, address_word pAddr, address_word vAddr, int IorD);
 922 #define LoadMemory(memvalp,memval1p,AccessLength,pAddr,vAddr,IorD,raw) \
 923 load_memory (SD, CPU, cia, memvalp, memval1p, 0, AccessLength, pAddr, vAddr, IorD)
 924
 925 INLINE_SIM_MAIN (void) store_memory (SIM_DESC sd, sim_cpu *cpu, address_word cia, int CCA, unsigned int AccessLength, uword64 MemElem, uword64 MemElem1, address_word pAddr, address_word vAddr);
 926 #define StoreMemory(AccessLength,MemElem,MemElem1,pAddr,vAddr,raw) \
 927 store_memory (SD, CPU, cia, 0, AccessLength, MemElem, MemElem1, pAddr, vAddr)
 928
 929 INLINE_SIM_MAIN (void) cache_op (SIM_DESC sd, sim_cpu *cpu, address_word cia, int op, address_word pAddr, address_word vAddr, unsigned int instruction);
 930 #define CacheOp(op,pAddr,vAddr,instruction) \
 931 cache_op (SD, CPU, cia, op, pAddr, vAddr, instruction)
 932
 933 INLINE_SIM_MAIN (void) sync_operation (SIM_DESC sd, sim_cpu *cpu, address_word cia, int stype);
 934 #define SyncOperation(stype) \
 935 sync_operation (SD, CPU, cia, (stype))
 936
 937 void unpredictable_action (sim_cpu *cpu, address_word cia);
 938 #define NotWordValue(val)       not_word_value (SD_, (val))
 939 #define Unpredictable()         unpredictable (SD_)
 940 #define UnpredictableResult()   /* For now, do nothing.  */
 941
 942 INLINE_SIM_MAIN (unsigned32) ifetch32 (SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word vaddr);
 943 #define IMEM32(CIA) ifetch32 (SD, CPU, (CIA), (CIA))
 944 INLINE_SIM_MAIN (unsigned16) ifetch16 (SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word vaddr);
 945 #define IMEM16(CIA) ifetch16 (SD, CPU, (CIA), ((CIA) & ~1))
 946 #define IMEM16_IMMED(CIA,NR) ifetch16 (SD, CPU, (CIA), ((CIA) & ~1) + 2 * (NR))
 947 #define IMEM32_MICROMIPS(CIA) \
 948   (ifetch16 (SD, CPU, (CIA), (CIA)) << 16 | ifetch16 (SD, CPU, (CIA + 2), \
 949                                                       (CIA + 2)))
 950 #define IMEM16_MICROMIPS(CIA) ifetch16 (SD, CPU, (CIA), ((CIA)))
 951
 952 #define MICROMIPS_MINOR_OPCODE(INSN) ((INSN & 0x1C00) >> 10)
 953
 954 #define MICROMIPS_DELAYSLOT_SIZE_ANY 0
 955 #define MICROMIPS_DELAYSLOT_SIZE_16 2
 956 #define MICROMIPS_DELAYSLOT_SIZE_32 4
 957
 958 extern int isa_mode;
 959
 960 #define ISA_MODE_MIPS32 0
 961 #define ISA_MODE_MICROMIPS 1
 962
 963 address_word micromips_instruction_decode (SIM_DESC sd, sim_cpu * cpu,
 964                                            address_word cia,
 965                                            int instruction_size);
 966
 967 #if WITH_TRACE_ANY_P
 968 void dotrace (SIM_DESC sd, sim_cpu *cpu, FILE *tracefh, int type, SIM_ADDR address, int width, const char *comment, ...) ATTRIBUTE_PRINTF (7, 8);
 969 extern FILE *tracefh;
 970 #else
 971 #define dotrace(sd, cpu, tracefh, type, address, width, comment, ...)
 972 #endif
 973
 974 extern int DSPLO_REGNUM[4];
 975 extern int DSPHI_REGNUM[4];
 976
 977 INLINE_SIM_MAIN (void) pending_tick (SIM_DESC sd, sim_cpu *cpu, address_word cia);
 978 extern SIM_CORE_SIGNAL_FN mips_core_signal;
 979
 980 char* pr_addr (SIM_ADDR addr);
 981 char* pr_uword64 (uword64 addr);
 982
 983
 984 #define GPR_CLEAR(N) do { GPR_SET((N),0); } while (0)
 985
 986 void mips_cpu_exception_trigger(SIM_DESC sd, sim_cpu* cpu, address_word pc);
 987 void mips_cpu_exception_suspend(SIM_DESC sd, sim_cpu* cpu, int exception);
 988 void mips_cpu_exception_resume(SIM_DESC sd, sim_cpu* cpu, int exception);
 989
 990 #ifdef MIPS_MACH_MULTI
 991 extern int mips_mach_multi(SIM_DESC sd);
 992 #define MIPS_MACH(SD)   mips_mach_multi(SD)
 993 #else
 994 #define MIPS_MACH(SD)   MIPS_MACH_DEFAULT
 995 #endif
 996
 997 /* Macros for determining whether a MIPS IV or MIPS V part is subject
 998    to the hi/lo restrictions described in mips.igen.  */
 999
1000 #define MIPS_MACH_HAS_MT_HILO_HAZARD(SD) \
1001   (MIPS_MACH (SD) != bfd_mach_mips5500)
1002
1003 #define MIPS_MACH_HAS_MULT_HILO_HAZARD(SD) \
1004   (MIPS_MACH (SD) != bfd_mach_mips5500)
1005
1006 #define MIPS_MACH_HAS_DIV_HILO_HAZARD(SD) \
1007   (MIPS_MACH (SD) != bfd_mach_mips5500)
1008
1009 #if H_REVEALS_MODULE_P (SIM_MAIN_INLINE)
1010 #include "sim-main.c"
1011 #endif
1012
1013 #endif