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 #define SIM_HAVE_COMMON_SIM_STATE
  24
  25 /* MIPS uses an unusual format for floating point quiet NaNs.  */
  26 #define SIM_QUIET_NAN_NEGATED
  27
  28 #define SIM_CORE_SIGNAL(SD,CPU,CIA,MAP,NR_BYTES,ADDR,TRANSFER,ERROR) \
  29 mips_core_signal ((SD), (CPU), (CIA), (MAP), (NR_BYTES), (ADDR), (TRANSFER), (ERROR))
  30
  31 #include "sim-basics.h"
  32 #include "sim-base.h"
  33 #include "bfd.h"
  34
  35 /* Deprecated macros and types for manipulating 64bit values.  Use
  36    ../common/sim-bits.h and ../common/sim-endian.h macros instead. */
  37
  38 typedef signed64 word64;
  39 typedef unsigned64 uword64;
  40
  41 #define WORD64LO(t)     (unsigned int)((t)&0xFFFFFFFF)
  42 #define WORD64HI(t)     (unsigned int)(((uword64)(t))>>32)
  43 #define SET64LO(t)      (((uword64)(t))&0xFFFFFFFF)
  44 #define SET64HI(t)      (((uword64)(t))<<32)
  45 #define WORD64(h,l)     ((word64)((SET64HI(h)|SET64LO(l))))
  46 #define UWORD64(h,l)     (SET64HI(h)|SET64LO(l))
  47
  48 /* Check if a value will fit within a halfword: */
  49 #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))
  50
  51
  52 typedef enum {
  53   cp0_dmfc0,
  54   cp0_dmtc0,
  55   cp0_mfc0,
  56   cp0_mtc0,
  57   cp0_tlbr,
  58   cp0_tlbwi,
  59   cp0_tlbwr,
  60   cp0_tlbp,
  61   cp0_cache,
  62   cp0_eret,
  63   cp0_deret,
  64   cp0_rfe
  65 } CP0_operation;
  66
  67 /* Floating-point operations: */
  68
  69 #include "sim-fpu.h"
  70 #include "cp1.h"
  71
  72 /* FPU registers must be one of the following types. All other values
  73    are reserved (and undefined). */
  74 typedef enum {
  75  fmt_single  = 0,
  76  fmt_double  = 1,
  77  fmt_word    = 4,
  78  fmt_long    = 5,
  79  fmt_ps      = 6,
  80  /* The following are well outside the normal acceptable format
  81     range, and are used in the register status vector. */
  82  fmt_unknown       = 0x10000000,
  83  fmt_uninterpreted = 0x20000000,
  84  fmt_uninterpreted_32 = 0x40000000,
  85  fmt_uninterpreted_64 = 0x80000000U,
  86 } FP_formats;
  87
  88 /* For paired word (pw) operations, the opcode representation is fmt_word,
  89    but register transfers (StoreFPR, ValueFPR, etc.) are done as fmt_long.  */
  90 #define fmt_pw fmt_long
  91
  92 /* This should be the COC1 value at the start of the preceding
  93    instruction: */
  94 #define PREVCOC1() ((STATE & simPCOC1) ? 1 : 0)
  95
  96 #ifdef TARGET_ENABLE_FR
  97 /* FIXME: this should be enabled for all targets, but needs testing first. */
  98 #define SizeFGR() (((WITH_TARGET_FLOATING_POINT_BITSIZE) == 64) \
  99    ? ((SR & status_FR) ? 64 : 32) \
 100    : (WITH_TARGET_FLOATING_POINT_BITSIZE))
 101 #else
 102 #define SizeFGR() (WITH_TARGET_FLOATING_POINT_BITSIZE)
 103 #endif
 104
 105
 106
 107
 108
 109 /* HI/LO register accesses */
 110
 111 /* For some MIPS targets, the HI/LO registers have certain timing
 112    restrictions in that, for instance, a read of a HI register must be
 113    separated by at least three instructions from a preceeding read.
 114
 115    The struct below is used to record the last access by each of A MT,
 116    MF or other OP instruction to a HI/LO register.  See mips.igen for
 117    more details. */
 118
 119 typedef struct _hilo_access {
 120   signed64 timestamp;
 121   address_word cia;
 122 } hilo_access;
 123
 124 typedef struct _hilo_history {
 125   hilo_access mt;
 126   hilo_access mf;
 127   hilo_access op;
 128 } hilo_history;
 129
 130
 131
 132
 133 /* Integer ALU operations: */
 134
 135 #include "sim-alu.h"
 136
 137 #define ALU32_END(ANS) \
 138   if (ALU32_HAD_OVERFLOW) \
 139     SignalExceptionIntegerOverflow (); \
 140   (ANS) = (signed32) ALU32_OVERFLOW_RESULT
 141
 142
 143 #define ALU64_END(ANS) \
 144   if (ALU64_HAD_OVERFLOW) \
 145     SignalExceptionIntegerOverflow (); \
 146   (ANS) = ALU64_OVERFLOW_RESULT;
 147
 148
 149
 150
 151
 152 /* The following is probably not used for MIPS IV onwards: */
 153 /* Slots for delayed register updates. For the moment we just have a
 154    fixed number of slots (rather than a more generic, dynamic
 155    system). This keeps the simulator fast. However, we only allow
 156    for the register update to be delayed for a single instruction
 157    cycle. */
 158 #define PSLOTS (8) /* Maximum number of instruction cycles */
 159
 160 typedef struct _pending_write_queue {
 161   int in;
 162   int out;
 163   int total;
 164   int slot_delay[PSLOTS];
 165   int slot_size[PSLOTS];
 166   int slot_bit[PSLOTS];
 167   void *slot_dest[PSLOTS];
 168   unsigned64 slot_value[PSLOTS];
 169 } pending_write_queue;
 170
 171 #ifndef PENDING_TRACE
 172 #define PENDING_TRACE 0
 173 #endif
 174 #define PENDING_IN ((CPU)->pending.in)
 175 #define PENDING_OUT ((CPU)->pending.out)
 176 #define PENDING_TOTAL ((CPU)->pending.total)
 177 #define PENDING_SLOT_SIZE ((CPU)->pending.slot_size)
 178 #define PENDING_SLOT_BIT ((CPU)->pending.slot_bit)
 179 #define PENDING_SLOT_DELAY ((CPU)->pending.slot_delay)
 180 #define PENDING_SLOT_DEST ((CPU)->pending.slot_dest)
 181 #define PENDING_SLOT_VALUE ((CPU)->pending.slot_value)
 182
 183 /* Invalidate the pending write queue, all pending writes are
 184    discarded. */
 185
 186 #define PENDING_INVALIDATE() \
 187 memset (&(CPU)->pending, 0, sizeof ((CPU)->pending))
 188
 189 /* Schedule a write to DEST for N cycles time.  For 64 bit
 190    destinations, schedule two writes.  For floating point registers,
 191    the caller should schedule a write to both the dest register and
 192    the FPR_STATE register.  When BIT is non-negative, only BIT of DEST
 193    is updated. */
 194
 195 #define PENDING_SCHED(DEST,VAL,DELAY,BIT)                               \
 196   do {                                                                  \
 197     if (PENDING_SLOT_DEST[PENDING_IN] != NULL)                          \
 198       sim_engine_abort (SD, CPU, cia,                                   \
 199                         "PENDING_SCHED - buffer overflow\n");           \
 200     if (PENDING_TRACE)                                                  \
 201       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",                  \
 202                       (unsigned long) cia, (unsigned long) &(DEST),     \
 203                       (unsigned long) (VAL), (BIT), (int) sizeof (DEST),\
 204                       PENDING_IN, PENDING_OUT, PENDING_TOTAL);          \
 205     PENDING_SLOT_DELAY[PENDING_IN] = (DELAY) + 1;                       \
 206     PENDING_SLOT_DEST[PENDING_IN] = &(DEST);                            \
 207     PENDING_SLOT_VALUE[PENDING_IN] = (VAL);                             \
 208     PENDING_SLOT_SIZE[PENDING_IN] = sizeof (DEST);                      \
 209     PENDING_SLOT_BIT[PENDING_IN] = (BIT);                               \
 210     PENDING_IN = (PENDING_IN + 1) % PSLOTS;                             \
 211     PENDING_TOTAL += 1;                                                 \
 212   } while (0)
 213
 214 #define PENDING_WRITE(DEST,VAL,DELAY) PENDING_SCHED(DEST,VAL,DELAY,-1)
 215 #define PENDING_BIT(DEST,VAL,DELAY,BIT) PENDING_SCHED(DEST,VAL,DELAY,BIT)
 216
 217 #define PENDING_TICK() pending_tick (SD, CPU, cia)
 218
 219 #define PENDING_FLUSH() abort () /* think about this one */
 220 #define PENDING_FP() abort () /* think about this one */
 221
 222 /* For backward compatibility */
 223 #define PENDING_FILL(R,VAL)                                             \
 224 do {                                                                    \
 225   if ((R) >= FGR_BASE && (R) < FGR_BASE + NR_FGR)                       \
 226     {                                                                   \
 227       PENDING_SCHED(FGR[(R) - FGR_BASE], VAL, 1, -1);                   \
 228       PENDING_SCHED(FPR_STATE[(R) - FGR_BASE], fmt_uninterpreted, 1, -1); \
 229     }                                                                   \
 230   else                                                                  \
 231     PENDING_SCHED(GPR[(R)], VAL, 1, -1);                                \
 232 } while (0)
 233
 234
 235 enum float_operation
 236   {
 237     FLOP_ADD,    FLOP_SUB,    FLOP_MUL,    FLOP_MADD,
 238     FLOP_MSUB,   FLOP_MAX=10, FLOP_MIN,    FLOP_ABS,
 239     FLOP_ITOF0=14, FLOP_FTOI0=18, FLOP_NEG=23
 240   };
 241
 242
 243 /* The internal representation of an MDMX accumulator.
 244    Note that 24 and 48 bit accumulator elements are represented in
 245    32 or 64 bits.  Since the accumulators are 2's complement with
 246    overflow suppressed, high-order bits can be ignored in most contexts.  */
 247
 248 typedef signed32 signed24;
 249 typedef signed64 signed48;
 250
 251 typedef union {
 252   signed24  ob[8];
 253   signed48  qh[4];
 254 } MDMX_accumulator;
 255
 256
 257 /* Conventional system arguments.  */
 258 #define SIM_STATE  sim_cpu *cpu, address_word cia
 259 #define SIM_ARGS   CPU, cia
 260
 261 struct _sim_cpu {
 262
 263
 264   /* The following are internal simulator state variables: */
 265   address_word dspc;  /* delay-slot PC */
 266 #define DSPC ((CPU)->dspc)
 267
 268 #define DELAY_SLOT(TARGET) NIA = delayslot32 (SD_, (TARGET))
 269 #define NULLIFY_NEXT_INSTRUCTION() NIA = nullify_next_insn32 (SD_)
 270
 271
 272   /* State of the simulator */
 273   unsigned int state;
 274   unsigned int dsstate;
 275 #define STATE ((CPU)->state)
 276 #define DSSTATE ((CPU)->dsstate)
 277
 278 /* Flags in the "state" variable: */
 279 #define simHALTEX       (1 << 2)  /* 0 = run; 1 = halt on exception */
 280 #define simHALTIN       (1 << 3)  /* 0 = run; 1 = halt on interrupt */
 281 #define simTRACE        (1 << 8)  /* 0 = do nothing; 1 = trace address activity */
 282 #define simPCOC0        (1 << 17) /* COC[1] from current */
 283 #define simPCOC1        (1 << 18) /* COC[1] from previous */
 284 #define simDELAYSLOT    (1 << 24) /* 0 = do nothing; 1 = delay slot entry exists */
 285 #define simSKIPNEXT     (1 << 25) /* 0 = do nothing; 1 = skip instruction */
 286 #define simSIGINT       (1 << 28)  /* 0 = do nothing; 1 = SIGINT has occured */
 287 #define simJALDELAYSLOT (1 << 29) /* 1 = in jal delay slot */
 288
 289 #ifndef ENGINE_ISSUE_PREFIX_HOOK
 290 #define ENGINE_ISSUE_PREFIX_HOOK() \
 291   { \
 292     /* Perform any pending writes */ \
 293     PENDING_TICK(); \
 294     /* Set previous flag, depending on current: */ \
 295     if (STATE & simPCOC0) \
 296      STATE |= simPCOC1; \
 297     else \
 298      STATE &= ~simPCOC1; \
 299     /* and update the current value: */ \
 300     if (GETFCC(0)) \
 301      STATE |= simPCOC0; \
 302     else \
 303      STATE &= ~simPCOC0; \
 304   }
 305 #endif /* ENGINE_ISSUE_PREFIX_HOOK */
 306
 307
 308 /* This is nasty, since we have to rely on matching the register
 309    numbers used by GDB. Unfortunately, depending on the MIPS target
 310    GDB uses different register numbers. We cannot just include the
 311    relevant "gdb/tm.h" link, since GDB may not be configured before
 312    the sim world, and also the GDB header file requires too much other
 313    state. */
 314
 315 #ifndef TM_MIPS_H
 316 #define LAST_EMBED_REGNUM (96)
 317 #define NUM_REGS (LAST_EMBED_REGNUM + 1)
 318
 319 #define FP0_REGNUM 38           /* Floating point register 0 (single float) */
 320 #define FCRCS_REGNUM 70         /* FP control/status */
 321 #define FCRIR_REGNUM 71         /* FP implementation/revision */
 322 #endif
 323
 324
 325 /* To keep this default simulator simple, and fast, we use a direct
 326    vector of registers. The internal simulator engine then uses
 327    manifests to access the correct slot. */
 328
 329   unsigned_word registers[LAST_EMBED_REGNUM + 1];
 330
 331   int register_widths[NUM_REGS];
 332 #define REGISTERS       ((CPU)->registers)
 333
 334 #define GPR     (&REGISTERS[0])
 335 #define GPR_SET(N,VAL) (REGISTERS[(N)] = (VAL))
 336
 337 #define LO      (REGISTERS[33])
 338 #define HI      (REGISTERS[34])
 339 #define PCIDX   37
 340 #define PC      (REGISTERS[PCIDX])
 341 #define CAUSE   (REGISTERS[36])
 342 #define SRIDX   (32)
 343 #define SR      (REGISTERS[SRIDX])      /* CPU status register */
 344 #define FCR0IDX  (71)
 345 #define FCR0    (REGISTERS[FCR0IDX])    /* really a 32bit register */
 346 #define FCR31IDX (70)
 347 #define FCR31   (REGISTERS[FCR31IDX])   /* really a 32bit register */
 348 #define FCSR    (FCR31)
 349 #define Debug   (REGISTERS[86])
 350 #define DEPC    (REGISTERS[87])
 351 #define EPC     (REGISTERS[88])
 352 #define ACX     (REGISTERS[89])
 353
 354 #define AC0LOIDX        (33)    /* Must be the same register as LO */
 355 #define AC0HIIDX        (34)    /* Must be the same register as HI */
 356 #define AC1LOIDX        (90)
 357 #define AC1HIIDX        (91)
 358 #define AC2LOIDX        (92)
 359 #define AC2HIIDX        (93)
 360 #define AC3LOIDX        (94)
 361 #define AC3HIIDX        (95)
 362
 363 #define DSPLO(N)        (REGISTERS[DSPLO_REGNUM[N]])
 364 #define DSPHI(N)        (REGISTERS[DSPHI_REGNUM[N]])
 365
 366 #define DSPCRIDX        (96)    /* DSP control register */
 367 #define DSPCR           (REGISTERS[DSPCRIDX])
 368
 369 #define DSPCR_POS_SHIFT         (0)
 370 #define DSPCR_POS_MASK          (0x3f)
 371 #define DSPCR_POS_SMASK         (DSPCR_POS_MASK << DSPCR_POS_SHIFT)
 372
 373 #define DSPCR_SCOUNT_SHIFT      (7)
 374 #define DSPCR_SCOUNT_MASK       (0x3f)
 375 #define DSPCR_SCOUNT_SMASK      (DSPCR_SCOUNT_MASK << DSPCR_SCOUNT_SHIFT)
 376
 377 #define DSPCR_CARRY_SHIFT       (13)
 378 #define DSPCR_CARRY_MASK        (1)
 379 #define DSPCR_CARRY_SMASK       (DSPCR_CARRY_MASK << DSPCR_CARRY_SHIFT)
 380 #define DSPCR_CARRY             (1 << DSPCR_CARRY_SHIFT)
 381
 382 #define DSPCR_EFI_SHIFT         (14)
 383 #define DSPCR_EFI_MASK          (1)
 384 #define DSPCR_EFI_SMASK         (DSPCR_EFI_MASK << DSPCR_EFI_SHIFT)
 385 #define DSPCR_EFI               (1 << DSPCR_EFI_MASK)
 386
 387 #define DSPCR_OUFLAG_SHIFT      (16)
 388 #define DSPCR_OUFLAG_MASK       (0xff)
 389 #define DSPCR_OUFLAG_SMASK      (DSPCR_OUFLAG_MASK << DSPCR_OUFLAG_SHIFT)
 390 #define DSPCR_OUFLAG4           (1 << (DSPCR_OUFLAG_SHIFT + 4))
 391 #define DSPCR_OUFLAG5           (1 << (DSPCR_OUFLAG_SHIFT + 5))
 392 #define DSPCR_OUFLAG6           (1 << (DSPCR_OUFLAG_SHIFT + 6))
 393 #define DSPCR_OUFLAG7           (1 << (DSPCR_OUFLAG_SHIFT + 7))
 394
 395 #define DSPCR_CCOND_SHIFT       (24)
 396 #define DSPCR_CCOND_MASK        (0xf)
 397 #define DSPCR_CCOND_SMASK       (DSPCR_CCOND_MASK << DSPCR_CCOND_SHIFT)
 398
 399   /* All internal state modified by signal_exception() that may need to be
 400      rolled back for passing moment-of-exception image back to gdb. */
 401   unsigned_word exc_trigger_registers[LAST_EMBED_REGNUM + 1];
 402   unsigned_word exc_suspend_registers[LAST_EMBED_REGNUM + 1];
 403   int exc_suspended;
 404
 405 #define SIM_CPU_EXCEPTION_TRIGGER(SD,CPU,CIA) mips_cpu_exception_trigger(SD,CPU,CIA)
 406 #define SIM_CPU_EXCEPTION_SUSPEND(SD,CPU,EXC) mips_cpu_exception_suspend(SD,CPU,EXC)
 407 #define SIM_CPU_EXCEPTION_RESUME(SD,CPU,EXC) mips_cpu_exception_resume(SD,CPU,EXC)
 408
 409   unsigned_word c0_config_reg;
 410 #define C0_CONFIG ((CPU)->c0_config_reg)
 411
 412 /* The following are pseudonyms for standard registers */
 413 #define ZERO    (REGISTERS[0])
 414 #define V0      (REGISTERS[2])
 415 #define A0      (REGISTERS[4])
 416 #define A1      (REGISTERS[5])
 417 #define A2      (REGISTERS[6])
 418 #define A3      (REGISTERS[7])
 419 #define T8IDX   24
 420 #define T8      (REGISTERS[T8IDX])
 421 #define SPIDX   29
 422 #define SP      (REGISTERS[SPIDX])
 423 #define RAIDX   31
 424 #define RA      (REGISTERS[RAIDX])
 425
 426   /* While space is allocated in the main registers arrray for some of
 427      the COP0 registers, that space isn't sufficient.  Unknown COP0
 428      registers overflow into the array below */
 429
 430 #define NR_COP0_GPR     32
 431   unsigned_word cop0_gpr[NR_COP0_GPR];
 432 #define COP0_GPR        ((CPU)->cop0_gpr)
 433 #define COP0_BADVADDR   (COP0_GPR[8])
 434
 435   /* While space is allocated for the floating point registers in the
 436      main registers array, they are stored separatly.  This is because
 437      their size may not necessarily match the size of either the
 438      general-purpose or system specific registers.  */
 439 #define NR_FGR    (32)
 440 #define FGR_BASE  FP0_REGNUM
 441   fp_word fgr[NR_FGR];
 442 #define FGR       ((CPU)->fgr)
 443
 444   /* Keep the current format state for each register: */
 445   FP_formats fpr_state[32];
 446 #define FPR_STATE ((CPU)->fpr_state)
 447
 448   pending_write_queue pending;
 449
 450   /* The MDMX accumulator (used only for MDMX ASE).  */
 451   MDMX_accumulator acc;
 452 #define ACC             ((CPU)->acc)
 453
 454   /* LLBIT = Load-Linked bit. A bit of "virtual" state used by atomic
 455      read-write instructions. It is set when a linked load occurs. It
 456      is tested and cleared by the conditional store. It is cleared
 457      (during other CPU operations) when a store to the location would
 458      no longer be atomic. In particular, it is cleared by exception
 459      return instructions. */
 460   int llbit;
 461 #define LLBIT ((CPU)->llbit)
 462
 463
 464 /* The HIHISTORY and LOHISTORY timestamps are used to ensure that
 465    corruptions caused by using the HI or LO register too close to a
 466    following operation is spotted. See mips.igen for more details. */
 467
 468   hilo_history hi_history;
 469 #define HIHISTORY (&(CPU)->hi_history)
 470   hilo_history lo_history;
 471 #define LOHISTORY (&(CPU)->lo_history)
 472
 473
 474   sim_cpu_base base;
 475 };
 476
 477 extern void mips_sim_close (SIM_DESC sd, int quitting);
 478 #define SIM_CLOSE_HOOK(...) mips_sim_close (__VA_ARGS__)
 479
 480 /* FIXME: At present much of the simulator is still static */
 481 struct mips_sim_state {
 482   /* microMIPS ISA mode.  */
 483   int isa_mode;
 484 };
 485 #define MIPS_SIM_STATE(sd) ((struct mips_sim_state *) STATE_ARCH_DATA (sd))
 486
 487
 488 /* Status information: */
 489
 490 /* TODO : these should be the bitmasks for these bits within the
 491    status register. At the moment the following are VR4300
 492    bit-positions: */
 493 #define status_KSU_mask  (0x18)         /* mask for KSU bits */
 494 #define status_KSU_shift (3)            /* shift for field */
 495 #define ksu_kernel       (0x0)
 496 #define ksu_supervisor   (0x1)
 497 #define ksu_user         (0x2)
 498 #define ksu_unknown      (0x3)
 499
 500 #define SR_KSU           ((SR & status_KSU_mask) >> status_KSU_shift)
 501
 502 #define status_IE        (1 <<  0)      /* Interrupt enable */
 503 #define status_EIE       (1 << 16)      /* Enable Interrupt Enable */
 504 #define status_EXL       (1 <<  1)      /* Exception level */
 505 #define status_RE        (1 << 25)      /* Reverse Endian in user mode */
 506 #define status_FR        (1 << 26)      /* enables MIPS III additional FP registers */
 507 #define status_SR        (1 << 20)      /* soft reset or NMI */
 508 #define status_BEV       (1 << 22)      /* Location of general exception vectors */
 509 #define status_TS        (1 << 21)      /* TLB shutdown has occurred */
 510 #define status_ERL       (1 <<  2)      /* Error level */
 511 #define status_IM7       (1 << 15)      /* Timer Interrupt Mask */
 512 #define status_RP        (1 << 27)      /* Reduced Power mode */
 513
 514 /* Specializations for TX39 family */
 515 #define status_IEc       (1 << 0)       /* Interrupt enable (current) */
 516 #define status_KUc       (1 << 1)       /* Kernel/User mode */
 517 #define status_IEp       (1 << 2)       /* Interrupt enable (previous) */
 518 #define status_KUp       (1 << 3)       /* Kernel/User mode */
 519 #define status_IEo       (1 << 4)       /* Interrupt enable (old) */
 520 #define status_KUo       (1 << 5)       /* Kernel/User mode */
 521 #define status_IM_mask   (0xff)         /* Interrupt mask */
 522 #define status_IM_shift  (8)
 523 #define status_NMI       (1 << 20)      /* NMI */
 524 #define status_NMI       (1 << 20)      /* NMI */
 525
 526 /* Status bits used by MIPS32/MIPS64.  */
 527 #define status_UX        (1 <<  5)      /* 64-bit user addrs */
 528 #define status_SX        (1 <<  6)      /* 64-bit supervisor addrs */
 529 #define status_KX        (1 <<  7)      /* 64-bit kernel addrs */
 530 #define status_TS        (1 << 21)      /* TLB shutdown has occurred */
 531 #define status_PX        (1 << 23)      /* Enable 64 bit operations */
 532 #define status_MX        (1 << 24)      /* Enable MDMX resources */
 533 #define status_CU0       (1 << 28)      /* Coprocessor 0 usable */
 534 #define status_CU1       (1 << 29)      /* Coprocessor 1 usable */
 535 #define status_CU2       (1 << 30)      /* Coprocessor 2 usable */
 536 #define status_CU3       (1 << 31)      /* Coprocessor 3 usable */
 537 /* Bits reserved for implementations:  */
 538 #define status_SBX       (1 << 16)      /* Enable SiByte SB-1 extensions.  */
 539
 540 #define cause_BD ((unsigned)1 << 31)    /* L1 Exception in branch delay slot */
 541 #define cause_BD2         (1 << 30)     /* L2 Exception in branch delay slot */
 542 #define cause_CE_mask     0x30000000    /* Coprocessor exception */
 543 #define cause_CE_shift    28
 544 #define cause_EXC2_mask   0x00070000
 545 #define cause_EXC2_shift  16
 546 #define cause_IP7         (1 << 15)     /* Interrupt pending */
 547 #define cause_SIOP        (1 << 12)     /* SIO pending */
 548 #define cause_IP3         (1 << 11)     /* Int 0 pending */
 549 #define cause_IP2         (1 << 10)     /* Int 1 pending */
 550
 551 #define cause_EXC_mask  (0x1c)          /* Exception code */
 552 #define cause_EXC_shift (2)
 553
 554 #define cause_SW0       (1 << 8)        /* Software interrupt 0 */
 555 #define cause_SW1       (1 << 9)        /* Software interrupt 1 */
 556 #define cause_IP_mask   (0x3f)          /* Interrupt pending field */
 557 #define cause_IP_shift  (10)
 558
 559 #define cause_set_EXC(x)  CAUSE = (CAUSE & ~cause_EXC_mask)  | ((x << cause_EXC_shift)  & cause_EXC_mask)
 560 #define cause_set_EXC2(x) CAUSE = (CAUSE & ~cause_EXC2_mask) | ((x << cause_EXC2_shift) & cause_EXC2_mask)
 561
 562
 563 /* NOTE: We keep the following status flags as bit values (1 for true,
 564    0 for false). This allows them to be used in binary boolean
 565    operations without worrying about what exactly the non-zero true
 566    value is. */
 567
 568 /* UserMode */
 569 #ifdef SUBTARGET_R3900
 570 #define UserMode        ((SR & status_KUc) ? 1 : 0)
 571 #else
 572 #define UserMode        ((((SR & status_KSU_mask) >> status_KSU_shift) == ksu_user) ? 1 : 0)
 573 #endif /* SUBTARGET_R3900 */
 574
 575 /* BigEndianMem */
 576 /* Hardware configuration. Affects endianness of LoadMemory and
 577    StoreMemory and the endianness of Kernel and Supervisor mode
 578    execution. The value is 0 for little-endian; 1 for big-endian. */
 579 #define BigEndianMem    (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
 580 /*(state & simBE) ? 1 : 0)*/
 581
 582 /* ReverseEndian */
 583 /* This mode is selected if in User mode with the RE bit being set in
 584    SR (Status Register). It reverses the endianness of load and store
 585    instructions. */
 586 #define ReverseEndian   (((SR & status_RE) && UserMode) ? 1 : 0)
 587
 588 /* BigEndianCPU */
 589 /* The endianness for load and store instructions (0=little;1=big). In
 590    User mode this endianness may be switched by setting the state_RE
 591    bit in the SR register. Thus, BigEndianCPU may be computed as
 592    (BigEndianMem EOR ReverseEndian). */
 593 #define BigEndianCPU    (BigEndianMem ^ ReverseEndian) /* Already bits */
 594
 595
 596
 597 /* Exceptions: */
 598
 599 /* NOTE: These numbers depend on the processor architecture being
 600    simulated: */
 601 enum ExceptionCause {
 602   Interrupt               = 0,
 603   TLBModification         = 1,
 604   TLBLoad                 = 2,
 605   TLBStore                = 3,
 606   AddressLoad             = 4,
 607   AddressStore            = 5,
 608   InstructionFetch        = 6,
 609   DataReference           = 7,
 610   SystemCall              = 8,
 611   BreakPoint              = 9,
 612   ReservedInstruction     = 10,
 613   CoProcessorUnusable     = 11,
 614   IntegerOverflow         = 12,    /* Arithmetic overflow (IDT monitor raises SIGFPE) */
 615   Trap                    = 13,
 616   FPE                     = 15,
 617   DebugBreakPoint         = 16,    /* Impl. dep. in MIPS32/MIPS64.  */
 618   MDMX                    = 22,
 619   Watch                   = 23,
 620   MCheck                  = 24,
 621   CacheErr                = 30,
 622   NMIReset                = 31,    /* Reserved in MIPS32/MIPS64.  */
 623
 624
 625 /* The following exception code is actually private to the simulator
 626    world. It is *NOT* a processor feature, and is used to signal
 627    run-time errors in the simulator. */
 628   SimulatorFault          = 0xFFFFFFFF
 629 };
 630
 631 #define TLB_REFILL  (0)
 632 #define TLB_INVALID (1)
 633
 634
 635 /* The following break instructions are reserved for use by the
 636    simulator.  The first is used to halt the simulation.  The second
 637    is used by gdb for break-points.  NOTE: Care must be taken, since
 638    this value may be used in later revisions of the MIPS ISA. */
 639 #define HALT_INSTRUCTION_MASK   (0x03FFFFC0)
 640
 641 #define HALT_INSTRUCTION        (0x03ff000d)
 642 #define HALT_INSTRUCTION2       (0x0000ffcd)
 643
 644
 645 #define BREAKPOINT_INSTRUCTION  (0x0005000d)
 646 #define BREAKPOINT_INSTRUCTION2 (0x0000014d)
 647
 648
 649
 650 void interrupt_event (SIM_DESC sd, void *data);
 651
 652 void signal_exception (SIM_DESC sd, sim_cpu *cpu, address_word cia, int exception, ...);
 653 #define SignalException(exc,instruction)     signal_exception (SD, CPU, cia, (exc), (instruction))
 654 #define SignalExceptionInterrupt(level)      signal_exception (SD, CPU, cia, Interrupt, level)
 655 #define SignalExceptionInstructionFetch()    signal_exception (SD, CPU, cia, InstructionFetch)
 656 #define SignalExceptionAddressStore()        signal_exception (SD, CPU, cia, AddressStore)
 657 #define SignalExceptionAddressLoad()         signal_exception (SD, CPU, cia, AddressLoad)
 658 #define SignalExceptionDataReference()       signal_exception (SD, CPU, cia, DataReference)
 659 #define SignalExceptionSimulatorFault(buf)   signal_exception (SD, CPU, cia, SimulatorFault, buf)
 660 #define SignalExceptionFPE()                 signal_exception (SD, CPU, cia, FPE)
 661 #define SignalExceptionIntegerOverflow()     signal_exception (SD, CPU, cia, IntegerOverflow)
 662 #define SignalExceptionCoProcessorUnusable(cop) signal_exception (SD, CPU, cia, CoProcessorUnusable)
 663 #define SignalExceptionNMIReset()            signal_exception (SD, CPU, cia, NMIReset)
 664 #define SignalExceptionTLBRefillStore()      signal_exception (SD, CPU, cia, TLBStore, TLB_REFILL)
 665 #define SignalExceptionTLBRefillLoad()       signal_exception (SD, CPU, cia, TLBLoad, TLB_REFILL)
 666 #define SignalExceptionTLBInvalidStore()     signal_exception (SD, CPU, cia, TLBStore, TLB_INVALID)
 667 #define SignalExceptionTLBInvalidLoad()      signal_exception (SD, CPU, cia, TLBLoad, TLB_INVALID)
 668 #define SignalExceptionTLBModification()     signal_exception (SD, CPU, cia, TLBModification)
 669 #define SignalExceptionMDMX()                signal_exception (SD, CPU, cia, MDMX)
 670 #define SignalExceptionWatch()               signal_exception (SD, CPU, cia, Watch)
 671 #define SignalExceptionMCheck()              signal_exception (SD, CPU, cia, MCheck)
 672 #define SignalExceptionCacheErr()            signal_exception (SD, CPU, cia, CacheErr)
 673
 674 /* Co-processor accesses */
 675
 676 /* XXX FIXME: For now, assume that FPU (cp1) is always usable.  */
 677 #define COP_Usable(coproc_num)          (coproc_num == 1)
 678
 679 void cop_lw  (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg, unsigned int memword);
 680 void cop_ld  (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg, uword64 memword);
 681 unsigned int cop_sw (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg);
 682 uword64 cop_sd (SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg);
 683
 684 #define COP_LW(coproc_num,coproc_reg,memword) \
 685 cop_lw (SD, CPU, cia, coproc_num, coproc_reg, memword)
 686 #define COP_LD(coproc_num,coproc_reg,memword) \
 687 cop_ld (SD, CPU, cia, coproc_num, coproc_reg, memword)
 688 #define COP_SW(coproc_num,coproc_reg) \
 689 cop_sw (SD, CPU, cia, coproc_num, coproc_reg)
 690 #define COP_SD(coproc_num,coproc_reg) \
 691 cop_sd (SD, CPU, cia, coproc_num, coproc_reg)
 692
 693
 694 void decode_coproc (SIM_DESC sd, sim_cpu *cpu, address_word cia,
 695                     unsigned int instruction, int coprocnum, CP0_operation op,
 696                     int rt, int rd, int sel);
 697 #define DecodeCoproc(instruction,coprocnum,op,rt,rd,sel) \
 698   decode_coproc (SD, CPU, cia, (instruction), (coprocnum), (op), \
 699                  (rt), (rd), (sel))
 700
 701 int sim_monitor (SIM_DESC sd, sim_cpu *cpu, address_word cia, unsigned int arg);
 702
 703
 704 /* FPR access.  */
 705 unsigned64 value_fpr (SIM_STATE, int fpr, FP_formats);
 706 #define ValueFPR(FPR,FMT) value_fpr (SIM_ARGS, (FPR), (FMT))
 707 void store_fpr (SIM_STATE, int fpr, FP_formats fmt, unsigned64 value);
 708 #define StoreFPR(FPR,FMT,VALUE) store_fpr (SIM_ARGS, (FPR), (FMT), (VALUE))
 709 unsigned64 ps_lower (SIM_STATE, unsigned64 op);
 710 #define PSLower(op) ps_lower (SIM_ARGS, op)
 711 unsigned64 ps_upper (SIM_STATE, unsigned64 op);
 712 #define PSUpper(op) ps_upper (SIM_ARGS, op)
 713 unsigned64 pack_ps (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats from);
 714 #define PackPS(op1,op2) pack_ps (SIM_ARGS, op1, op2, fmt_single)
 715
 716
 717 /* FCR access.  */
 718 unsigned_word value_fcr (SIM_STATE, int fcr);
 719 #define ValueFCR(FCR) value_fcr (SIM_ARGS, (FCR))
 720 void store_fcr (SIM_STATE, int fcr, unsigned_word value);
 721 #define StoreFCR(FCR,VALUE) store_fcr (SIM_ARGS, (FCR), (VALUE))
 722 void test_fcsr (SIM_STATE);
 723 #define TestFCSR() test_fcsr (SIM_ARGS)
 724
 725
 726 /* FPU operations.  */
 727 void fp_cmp (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt, int abs, int cond, int cc);
 728 #define Compare(op1,op2,fmt,cond,cc) fp_cmp(SIM_ARGS, op1, op2, fmt, 0, cond, cc)
 729 unsigned64 fp_abs (SIM_STATE, unsigned64 op, FP_formats fmt);
 730 #define AbsoluteValue(op,fmt) fp_abs(SIM_ARGS, op, fmt)
 731 unsigned64 fp_neg (SIM_STATE, unsigned64 op, FP_formats fmt);
 732 #define Negate(op,fmt) fp_neg(SIM_ARGS, op, fmt)
 733 unsigned64 fp_add (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 734 #define Add(op1,op2,fmt) fp_add(SIM_ARGS, op1, op2, fmt)
 735 unsigned64 fp_sub (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 736 #define Sub(op1,op2,fmt) fp_sub(SIM_ARGS, op1, op2, fmt)
 737 unsigned64 fp_mul (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 738 #define Multiply(op1,op2,fmt) fp_mul(SIM_ARGS, op1, op2, fmt)
 739 unsigned64 fp_div (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 740 #define Divide(op1,op2,fmt) fp_div(SIM_ARGS, op1, op2, fmt)
 741 unsigned64 fp_recip (SIM_STATE, unsigned64 op, FP_formats fmt);
 742 #define Recip(op,fmt) fp_recip(SIM_ARGS, op, fmt)
 743 unsigned64 fp_sqrt (SIM_STATE, unsigned64 op, FP_formats fmt);
 744 #define SquareRoot(op,fmt) fp_sqrt(SIM_ARGS, op, fmt)
 745 unsigned64 fp_rsqrt (SIM_STATE, unsigned64 op, FP_formats fmt);
 746 #define RSquareRoot(op,fmt) fp_rsqrt(SIM_ARGS, op, fmt)
 747 unsigned64 fp_madd (SIM_STATE, unsigned64 op1, unsigned64 op2,
 748                     unsigned64 op3, FP_formats fmt);
 749 #define MultiplyAdd(op1,op2,op3,fmt) fp_madd(SIM_ARGS, op1, op2, op3, fmt)
 750 unsigned64 fp_msub (SIM_STATE, unsigned64 op1, unsigned64 op2,
 751                     unsigned64 op3, FP_formats fmt);
 752 #define MultiplySub(op1,op2,op3,fmt) fp_msub(SIM_ARGS, op1, op2, op3, fmt)
 753 unsigned64 fp_nmadd (SIM_STATE, unsigned64 op1, unsigned64 op2,
 754                      unsigned64 op3, FP_formats fmt);
 755 #define NegMultiplyAdd(op1,op2,op3,fmt) fp_nmadd(SIM_ARGS, op1, op2, op3, fmt)
 756 unsigned64 fp_nmsub (SIM_STATE, unsigned64 op1, unsigned64 op2,
 757                      unsigned64 op3, FP_formats fmt);
 758 #define NegMultiplySub(op1,op2,op3,fmt) fp_nmsub(SIM_ARGS, op1, op2, op3, fmt)
 759 unsigned64 convert (SIM_STATE, int rm, unsigned64 op, FP_formats from, FP_formats to);
 760 #define Convert(rm,op,from,to) convert (SIM_ARGS, rm, op, from, to)
 761 unsigned64 convert_ps (SIM_STATE, int rm, unsigned64 op, FP_formats from,
 762                        FP_formats to);
 763 #define ConvertPS(rm,op,from,to) convert_ps (SIM_ARGS, rm, op, from, to)
 764
 765
 766 /* MIPS-3D ASE operations.  */
 767 #define CompareAbs(op1,op2,fmt,cond,cc) \
 768 fp_cmp(SIM_ARGS, op1, op2, fmt, 1, cond, cc)
 769 unsigned64 fp_add_r (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 770 #define AddR(op1,op2,fmt) fp_add_r(SIM_ARGS, op1, op2, fmt)
 771 unsigned64 fp_mul_r (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 772 #define MultiplyR(op1,op2,fmt) fp_mul_r(SIM_ARGS, op1, op2, fmt)
 773 unsigned64 fp_recip1 (SIM_STATE, unsigned64 op, FP_formats fmt);
 774 #define Recip1(op,fmt) fp_recip1(SIM_ARGS, op, fmt)
 775 unsigned64 fp_recip2 (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 776 #define Recip2(op1,op2,fmt) fp_recip2(SIM_ARGS, op1, op2, fmt)
 777 unsigned64 fp_rsqrt1 (SIM_STATE, unsigned64 op, FP_formats fmt);
 778 #define RSquareRoot1(op,fmt) fp_rsqrt1(SIM_ARGS, op, fmt)
 779 unsigned64 fp_rsqrt2 (SIM_STATE, unsigned64 op1, unsigned64 op2, FP_formats fmt);
 780 #define RSquareRoot2(op1,op2,fmt) fp_rsqrt2(SIM_ARGS, op1, op2, fmt)
 781
 782
 783 /* MDMX access.  */
 784
 785 typedef unsigned int MX_fmtsel;   /* MDMX format select field (5 bits).  */
 786 #define ob_fmtsel(sel) (((sel)<<1)|0x0)
 787 #define qh_fmtsel(sel) (((sel)<<2)|0x1)
 788
 789 #define fmt_mdmx fmt_uninterpreted
 790
 791 #define MX_VECT_AND  (0)
 792 #define MX_VECT_NOR  (1)
 793 #define MX_VECT_OR   (2)
 794 #define MX_VECT_XOR  (3)
 795 #define MX_VECT_SLL  (4)
 796 #define MX_VECT_SRL  (5)
 797 #define MX_VECT_ADD  (6)
 798 #define MX_VECT_SUB  (7)
 799 #define MX_VECT_MIN  (8)
 800 #define MX_VECT_MAX  (9)
 801 #define MX_VECT_MUL  (10)
 802 #define MX_VECT_MSGN (11)
 803 #define MX_VECT_SRA  (12)
 804 #define MX_VECT_ABSD (13)               /* SB-1 only.  */
 805 #define MX_VECT_AVG  (14)               /* SB-1 only.  */
 806
 807 unsigned64 mdmx_cpr_op (SIM_STATE, int op, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 808 #define MX_Add(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_ADD, op1, vt, fmtsel)
 809 #define MX_And(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_AND, op1, vt, fmtsel)
 810 #define MX_Max(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MAX, op1, vt, fmtsel)
 811 #define MX_Min(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MIN, op1, vt, fmtsel)
 812 #define MX_Msgn(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MSGN, op1, vt, fmtsel)
 813 #define MX_Mul(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_MUL, op1, vt, fmtsel)
 814 #define MX_Nor(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_NOR, op1, vt, fmtsel)
 815 #define MX_Or(op1,vt,fmtsel)  mdmx_cpr_op(SIM_ARGS, MX_VECT_OR,  op1, vt, fmtsel)
 816 #define MX_ShiftLeftLogical(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SLL, op1, vt, fmtsel)
 817 #define MX_ShiftRightArith(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SRA, op1, vt, fmtsel)
 818 #define MX_ShiftRightLogical(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SRL, op1, vt, fmtsel)
 819 #define MX_Sub(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_SUB, op1, vt, fmtsel)
 820 #define MX_Xor(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_XOR, op1, vt, fmtsel)
 821 #define MX_AbsDiff(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_ABSD, op1, vt, fmtsel)
 822 #define MX_Avg(op1,vt,fmtsel) mdmx_cpr_op(SIM_ARGS, MX_VECT_AVG, op1, vt, fmtsel)
 823
 824 #define MX_C_EQ  0x1
 825 #define MX_C_LT  0x4
 826
 827 void mdmx_cc_op (SIM_STATE, int cond, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 828 #define MX_Comp(op1,cond,vt,fmtsel) mdmx_cc_op(SIM_ARGS, cond, op1, vt, fmtsel)
 829
 830 unsigned64 mdmx_pick_op (SIM_STATE, int tf, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 831 #define MX_Pick(tf,op1,vt,fmtsel) mdmx_pick_op(SIM_ARGS, tf, op1, vt, fmtsel)
 832
 833 #define MX_VECT_ADDA  (0)
 834 #define MX_VECT_ADDL  (1)
 835 #define MX_VECT_MULA  (2)
 836 #define MX_VECT_MULL  (3)
 837 #define MX_VECT_MULS  (4)
 838 #define MX_VECT_MULSL (5)
 839 #define MX_VECT_SUBA  (6)
 840 #define MX_VECT_SUBL  (7)
 841 #define MX_VECT_ABSDA (8)               /* SB-1 only.  */
 842
 843 void mdmx_acc_op (SIM_STATE, int op, unsigned64 op1, int vt, MX_fmtsel fmtsel);
 844 #define MX_AddA(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_ADDA, op1, vt, fmtsel)
 845 #define MX_AddL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_ADDL, op1, vt, fmtsel)
 846 #define MX_MulA(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULA, op1, vt, fmtsel)
 847 #define MX_MulL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULL, op1, vt, fmtsel)
 848 #define MX_MulS(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULS, op1, vt, fmtsel)
 849 #define MX_MulSL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_MULSL, op1, vt, fmtsel)
 850 #define MX_SubA(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_SUBA, op1, vt, fmtsel)
 851 #define MX_SubL(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_SUBL, op1, vt, fmtsel)
 852 #define MX_AbsDiffC(op1,vt,fmtsel) mdmx_acc_op(SIM_ARGS, MX_VECT_ABSDA, op1, vt, fmtsel)
 853
 854 #define MX_FMT_OB   (0)
 855 #define MX_FMT_QH   (1)
 856
 857 /* The following codes chosen to indicate the units of shift.  */
 858 #define MX_RAC_L    (0)
 859 #define MX_RAC_M    (1)
 860 #define MX_RAC_H    (2)
 861
 862 unsigned64 mdmx_rac_op (SIM_STATE, int, int);
 863 #define MX_RAC(op,fmt) mdmx_rac_op(SIM_ARGS, op, fmt)
 864
 865 void mdmx_wacl (SIM_STATE, int, unsigned64, unsigned64);
 866 #define MX_WACL(fmt,vs,vt) mdmx_wacl(SIM_ARGS, fmt, vs, vt)
 867 void mdmx_wach (SIM_STATE, int, unsigned64);
 868 #define MX_WACH(fmt,vs) mdmx_wach(SIM_ARGS, fmt, vs)
 869
 870 #define MX_RND_AS   (0)
 871 #define MX_RND_AU   (1)
 872 #define MX_RND_ES   (2)
 873 #define MX_RND_EU   (3)
 874 #define MX_RND_ZS   (4)
 875 #define MX_RND_ZU   (5)
 876
 877 unsigned64 mdmx_round_op (SIM_STATE, int, int, MX_fmtsel);
 878 #define MX_RNAS(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_AS, vt, fmt)
 879 #define MX_RNAU(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_AU, vt, fmt)
 880 #define MX_RNES(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_ES, vt, fmt)
 881 #define MX_RNEU(vt,fmt) mdmx_round_op(SIM_ARGS, MX_RND_EU, vt, fmt)
 882 #define MX_RZS(vt,fmt)  mdmx_round_op(SIM_ARGS, MX_RND_ZS, vt, fmt)
 883 #define MX_RZU(vt,fmt)  mdmx_round_op(SIM_ARGS, MX_RND_ZU, vt, fmt)
 884
 885 unsigned64 mdmx_shuffle (SIM_STATE, int, unsigned64, unsigned64);
 886 #define MX_SHFL(shop,op1,op2) mdmx_shuffle(SIM_ARGS, shop, op1, op2)
 887
 888
 889
 890 /* Memory accesses */
 891
 892 /* The following are generic to all versions of the MIPS architecture
 893    to date: */
 894
 895 #define isINSTRUCTION   (1 == 0) /* FALSE */
 896 #define isDATA          (1 == 1) /* TRUE */
 897 #define isLOAD          (1 == 0) /* FALSE */
 898 #define isSTORE         (1 == 1) /* TRUE */
 899 #define isREAL          (1 == 0) /* FALSE */
 900 #define isRAW           (1 == 1) /* TRUE */
 901 /* The parameter HOST (isTARGET / isHOST) is ignored */
 902 #define isTARGET        (1 == 0) /* FALSE */
 903 /* #define isHOST          (1 == 1) TRUE */
 904
 905 /* The "AccessLength" specifications for Loads and Stores. NOTE: This
 906    is the number of bytes minus 1. */
 907 #define AccessLength_BYTE       (0)
 908 #define AccessLength_HALFWORD   (1)
 909 #define AccessLength_TRIPLEBYTE (2)
 910 #define AccessLength_WORD       (3)
 911 #define AccessLength_QUINTIBYTE (4)
 912 #define AccessLength_SEXTIBYTE  (5)
 913 #define AccessLength_SEPTIBYTE  (6)
 914 #define AccessLength_DOUBLEWORD (7)
 915 #define AccessLength_QUADWORD   (15)
 916
 917 #define LOADDRMASK (WITH_TARGET_WORD_BITSIZE == 64 \
 918                     ? AccessLength_DOUBLEWORD /*7*/ \
 919                     : AccessLength_WORD /*3*/)
 920 #define PSIZE (WITH_TARGET_ADDRESS_BITSIZE)
 921
 922
 923 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);
 924 #define LoadMemory(memvalp,memval1p,AccessLength,pAddr,vAddr,IorD,raw) \
 925 load_memory (SD, CPU, cia, memvalp, memval1p, 0, AccessLength, pAddr, vAddr, IorD)
 926
 927 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);
 928 #define StoreMemory(AccessLength,MemElem,MemElem1,pAddr,vAddr,raw) \
 929 store_memory (SD, CPU, cia, 0, AccessLength, MemElem, MemElem1, pAddr, vAddr)
 930
 931 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);
 932 #define CacheOp(op,pAddr,vAddr,instruction) \
 933 cache_op (SD, CPU, cia, op, pAddr, vAddr, instruction)
 934
 935 INLINE_SIM_MAIN (void) sync_operation (SIM_DESC sd, sim_cpu *cpu, address_word cia, int stype);
 936 #define SyncOperation(stype) \
 937 sync_operation (SD, CPU, cia, (stype))
 938
 939 void unpredictable_action (sim_cpu *cpu, address_word cia);
 940 #define NotWordValue(val)       not_word_value (SD_, (val))
 941 #define Unpredictable()         unpredictable (SD_)
 942 #define UnpredictableResult()   /* For now, do nothing.  */
 943
 944 INLINE_SIM_MAIN (unsigned32) ifetch32 (SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word vaddr);
 945 #define IMEM32(CIA) ifetch32 (SD, CPU, (CIA), (CIA))
 946 INLINE_SIM_MAIN (unsigned16) ifetch16 (SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word vaddr);
 947 #define IMEM16(CIA) ifetch16 (SD, CPU, (CIA), ((CIA) & ~1))
 948 #define IMEM16_IMMED(CIA,NR) ifetch16 (SD, CPU, (CIA), ((CIA) & ~1) + 2 * (NR))
 949 #define IMEM32_MICROMIPS(CIA) \
 950   (ifetch16 (SD, CPU, (CIA), (CIA)) << 16 | ifetch16 (SD, CPU, (CIA + 2), \
 951                                                       (CIA + 2)))
 952 #define IMEM16_MICROMIPS(CIA) ifetch16 (SD, CPU, (CIA), ((CIA)))
 953
 954 #define MICROMIPS_MINOR_OPCODE(INSN) ((INSN & 0x1C00) >> 10)
 955
 956 #define MICROMIPS_DELAYSLOT_SIZE_ANY 0
 957 #define MICROMIPS_DELAYSLOT_SIZE_16 2
 958 #define MICROMIPS_DELAYSLOT_SIZE_32 4
 959
 960 extern int isa_mode;
 961
 962 #define ISA_MODE_MIPS32 0
 963 #define ISA_MODE_MICROMIPS 1
 964
 965 address_word micromips_instruction_decode (SIM_DESC sd, sim_cpu * cpu,
 966                                            address_word cia,
 967                                            int instruction_size);
 968
 969 #if WITH_TRACE_ANY_P
 970 void dotrace (SIM_DESC sd, sim_cpu *cpu, FILE *tracefh, int type, SIM_ADDR address, int width, char *comment, ...);
 971 extern FILE *tracefh;
 972 #else
 973 #define dotrace(sd, cpu, tracefh, type, address, width, comment, ...)
 974 #endif
 975
 976 extern int DSPLO_REGNUM[4];
 977 extern int DSPHI_REGNUM[4];
 978
 979 INLINE_SIM_MAIN (void) pending_tick (SIM_DESC sd, sim_cpu *cpu, address_word cia);
 980 extern SIM_CORE_SIGNAL_FN mips_core_signal;
 981
 982 char* pr_addr (SIM_ADDR addr);
 983 char* pr_uword64 (uword64 addr);
 984
 985
 986 #define GPR_CLEAR(N) do { GPR_SET((N),0); } while (0)
 987
 988 void mips_cpu_exception_trigger(SIM_DESC sd, sim_cpu* cpu, address_word pc);
 989 void mips_cpu_exception_suspend(SIM_DESC sd, sim_cpu* cpu, int exception);
 990 void mips_cpu_exception_resume(SIM_DESC sd, sim_cpu* cpu, int exception);
 991
 992 #ifdef MIPS_MACH_MULTI
 993 extern int mips_mach_multi(SIM_DESC sd);
 994 #define MIPS_MACH(SD)   mips_mach_multi(SD)
 995 #else
 996 #define MIPS_MACH(SD)   MIPS_MACH_DEFAULT
 997 #endif
 998
 999 /* Macros for determining whether a MIPS IV or MIPS V part is subject
1000    to the hi/lo restrictions described in mips.igen.  */
1001
1002 #define MIPS_MACH_HAS_MT_HILO_HAZARD(SD) \
1003   (MIPS_MACH (SD) != bfd_mach_mips5500)
1004
1005 #define MIPS_MACH_HAS_MULT_HILO_HAZARD(SD) \
1006   (MIPS_MACH (SD) != bfd_mach_mips5500)
1007
1008 #define MIPS_MACH_HAS_DIV_HILO_HAZARD(SD) \
1009   (MIPS_MACH (SD) != bfd_mach_mips5500)
1010
1011 #if H_REVEALS_MODULE_P (SIM_MAIN_INLINE)
1012 #include "sim-main.c"
1013 #endif
1014
1015 #endif