sim/d10v/d10v_sim.h

   1 #include "config.h"
   2 #include <stdio.h>
   3 #include <ctype.h>
   4 #include <limits.h>
   5 #include "ansidecl.h"
   6 #include "gdb/callback.h"
   7 #include "opcode/d10v.h"
   8 #include "bfd.h"
   9
  10 #define DEBUG_TRACE             0x00000001
  11 #define DEBUG_VALUES            0x00000002
  12 #define DEBUG_LINE_NUMBER       0x00000004
  13 #define DEBUG_MEMSIZE           0x00000008
  14 #define DEBUG_INSTRUCTION       0x00000010
  15 #define DEBUG_TRAP              0x00000020
  16 #define DEBUG_MEMORY            0x00000040
  17
  18 #ifndef DEBUG
  19 #define DEBUG (DEBUG_TRACE | DEBUG_VALUES | DEBUG_LINE_NUMBER)
  20 #endif
  21
  22 extern int d10v_debug;
  23
  24 #include "gdb/remote-sim.h"
  25 #include "sim-config.h"
  26 #include "sim-types.h"
  27
  28 typedef unsigned8 uint8;
  29 typedef unsigned16 uint16;
  30 typedef signed16 int16;
  31 typedef unsigned32 uint32;
  32 typedef signed32 int32;
  33 typedef unsigned64 uint64;
  34 typedef signed64 int64;
  35
  36 /* FIXME: D10V defines */
  37 typedef uint16 reg_t;
  38
  39 struct simops
  40 {
  41   long opcode;
  42   int  is_long;
  43   long mask;
  44   int format;
  45   int cycles;
  46   int unit;
  47   int exec_type;
  48   void (*func)();
  49   int numops;
  50   int operands[9];
  51 };
  52
  53 enum _ins_type
  54 {
  55   INS_UNKNOWN,                  /* unknown instruction */
  56   INS_COND_TRUE,                /* # times EXExxx executed other instruction */
  57   INS_COND_FALSE,               /* # times EXExxx did not execute other instruction */
  58   INS_COND_JUMP,                /* # times JUMP skipped other instruction */
  59   INS_CYCLES,                   /* # cycles */
  60   INS_LONG,                     /* long instruction (both containers, ie FM == 11) */
  61   INS_LEFTRIGHT,                /* # times instruction encoded as L -> R (ie, FM == 01) */
  62   INS_RIGHTLEFT,                /* # times instruction encoded as L <- R (ie, FM == 10) */
  63   INS_PARALLEL,                 /* # times instruction encoded as L || R (ie, RM == 00) */
  64
  65   INS_LEFT,                     /* normal left instructions */
  66   INS_LEFT_PARALLEL,            /* left side of || */
  67   INS_LEFT_COND_TEST,           /* EXExx test on left side */
  68   INS_LEFT_COND_EXE,            /* execution after EXExxx test on right side succeeded */
  69   INS_LEFT_NOPS,                /* NOP on left side */
  70
  71   INS_RIGHT,                    /* normal right instructions */
  72   INS_RIGHT_PARALLEL,           /* right side of || */
  73   INS_RIGHT_COND_TEST,          /* EXExx test on right side */
  74   INS_RIGHT_COND_EXE,           /* execution after EXExxx test on left side succeeded */
  75   INS_RIGHT_NOPS,               /* NOP on right side */
  76
  77   INS_MAX
  78 };
  79
  80 extern unsigned long ins_type_counters[ (int)INS_MAX ];
  81
  82 enum {
  83   SP_IDX = 15,
  84 };
  85
  86 /* Write-back slots */
  87 union slot_data {
  88   unsigned_1 _1;
  89   unsigned_2 _2;
  90   unsigned_4 _4;
  91   unsigned_8 _8;
  92 };
  93 struct slot {
  94   void *dest;
  95   int size;
  96   union slot_data data;
  97   union slot_data mask;
  98 };
  99 enum {
 100  NR_SLOTS = 16,
 101 };
 102 #define SLOT (State.slot)
 103 #define SLOT_NR (State.slot_nr)
 104 #define SLOT_PEND_MASK(DEST, MSK, VAL) \
 105   do \
 106     { \
 107       SLOT[SLOT_NR].dest = &(DEST); \
 108       SLOT[SLOT_NR].size = sizeof (DEST); \
 109       switch (sizeof (DEST)) \
 110         { \
 111         case 1: \
 112           SLOT[SLOT_NR].data._1 = (unsigned_1) (VAL); \
 113           SLOT[SLOT_NR].mask._1 = (unsigned_1) (MSK); \
 114           break; \
 115         case 2: \
 116           SLOT[SLOT_NR].data._2 = (unsigned_2) (VAL); \
 117           SLOT[SLOT_NR].mask._2 = (unsigned_2) (MSK); \
 118           break; \
 119         case 4: \
 120           SLOT[SLOT_NR].data._4 = (unsigned_4) (VAL); \
 121           SLOT[SLOT_NR].mask._4 = (unsigned_4) (MSK); \
 122           break; \
 123         case 8: \
 124           SLOT[SLOT_NR].data._8 = (unsigned_8) (VAL); \
 125           SLOT[SLOT_NR].mask._8 = (unsigned_8) (MSK); \
 126           break; \
 127         } \
 128       SLOT_NR = (SLOT_NR + 1); \
 129     } \
 130   while (0)
 131 #define SLOT_PEND(DEST, VAL) SLOT_PEND_MASK(DEST, 0, VAL)
 132 #define SLOT_DISCARD() (SLOT_NR = 0)
 133 #define SLOT_FLUSH() \
 134   do \
 135     { \
 136       int i; \
 137       for (i = 0; i < SLOT_NR; i++) \
 138         { \
 139           switch (SLOT[i].size) \
 140             { \
 141             case 1: \
 142               *(unsigned_1*) SLOT[i].dest &= SLOT[i].mask._1; \
 143               *(unsigned_1*) SLOT[i].dest |= SLOT[i].data._1; \
 144               break; \
 145             case 2: \
 146               *(unsigned_2*) SLOT[i].dest &= SLOT[i].mask._2; \
 147               *(unsigned_2*) SLOT[i].dest |= SLOT[i].data._2; \
 148               break; \
 149             case 4: \
 150               *(unsigned_4*) SLOT[i].dest &= SLOT[i].mask._4; \
 151               *(unsigned_4*) SLOT[i].dest |= SLOT[i].data._4; \
 152               break; \
 153             case 8: \
 154               *(unsigned_8*) SLOT[i].dest &= SLOT[i].mask._8; \
 155               *(unsigned_8*) SLOT[i].dest |= SLOT[i].data._8; \
 156               break; \
 157             } \
 158         } \
 159       SLOT_NR = 0; \
 160     } \
 161   while (0)
 162 #define SLOT_DUMP() \
 163   do \
 164     { \
 165       int i; \
 166       for (i = 0; i < SLOT_NR; i++) \
 167         { \
 168           switch (SLOT[i].size) \
 169             { \
 170             case 1: \
 171               printf ("SLOT %d *0x%08lx & 0x%02x | 0x%02x\n", i, \
 172                       (long) SLOT[i].dest, \
 173                       (unsigned) SLOT[i].mask._1, \
 174                       (unsigned) SLOT[i].data._1); \
 175               break; \
 176             case 2: \
 177               printf ("SLOT %d *0x%08lx & 0x%04x | 0x%04x\n", i, \
 178                       (long) SLOT[i].dest, \
 179                       (unsigned) SLOT[i].mask._2, \
 180                       (unsigned) SLOT[i].data._2); \
 181               break; \
 182             case 4: \
 183               printf ("SLOT %d *0x%08lx & 0x%08x | 0x%08x\n", i, \
 184                       (long) SLOT[i].dest, \
 185                       (unsigned) SLOT[i].mask._4, \
 186                       (unsigned) SLOT[i].data._4); \
 187               break; \
 188             case 8: \
 189               printf ("SLOT %d *0x%08lx & 0x%08x%08x | 0x%08x%08x\n", i, \
 190                       (long) SLOT[i].dest, \
 191                       (unsigned) (SLOT[i].mask._8 >> 32),  \
 192                       (unsigned) SLOT[i].mask._8, \
 193                       (unsigned) (SLOT[i].data._8 >> 32),  \
 194                       (unsigned) SLOT[i].data._8); \
 195               break; \
 196             } \
 197         } \
 198     } \
 199   while (0)
 200
 201 /* d10v memory: There are three separate d10v memory regions IMEM,
 202    UMEM and DMEM.  The IMEM and DMEM are further broken down into
 203    blocks (very like VM pages). */
 204
 205 enum
 206 {
 207   IMAP_BLOCK_SIZE = 0x20000,
 208   DMAP_BLOCK_SIZE = 0x4000,
 209 };
 210
 211 /* Implement the three memory regions using sparse arrays.  Allocate
 212    memory using ``segments''.  A segment must be at least as large as
 213    a BLOCK - ensures that an access that doesn't cross a block
 214    boundary can't cross a segment boundary */
 215
 216 enum
 217 {
 218   SEGMENT_SIZE = 0x20000, /* 128KB - MAX(IMAP_BLOCK_SIZE,DMAP_BLOCK_SIZE) */
 219   IMEM_SEGMENTS = 8, /* 1MB */
 220   DMEM_SEGMENTS = 8, /* 1MB */
 221   UMEM_SEGMENTS = 128 /* 16MB */
 222 };
 223
 224 struct d10v_memory
 225 {
 226   uint8 *insn[IMEM_SEGMENTS];
 227   uint8 *data[DMEM_SEGMENTS];
 228   uint8 *unif[UMEM_SEGMENTS];
 229   uint8 fault[16];
 230 };
 231
 232 struct _state
 233 {
 234   reg_t regs[16];               /* general-purpose registers */
 235 #define GPR(N) (State.regs[(N)] + 0)
 236 #define SET_GPR(N,VAL) SLOT_PEND (State.regs[(N)], (VAL))
 237
 238 #define GPR32(N) ((((uint32) State.regs[(N) + 0]) << 16) \
 239                   | (uint16) State.regs[(N) + 1])
 240 #define SET_GPR32(N,VAL) do { SET_GPR (OP[0] + 0, (VAL) >> 16); SET_GPR (OP[0] + 1, (VAL)); } while (0)
 241
 242   reg_t cregs[16];              /* control registers */
 243 #define CREG(N) (State.cregs[(N)] + 0)
 244 #define SET_CREG(N,VAL) move_to_cr ((N), 0, (VAL), 0)
 245 #define SET_HW_CREG(N,VAL) move_to_cr ((N), 0, (VAL), 1)
 246
 247   reg_t sp[2];                  /* holding area for SPI(0)/SPU(1) */
 248 #define HELD_SP(N) (State.sp[(N)] + 0)
 249 #define SET_HELD_SP(N,VAL) SLOT_PEND (State.sp[(N)], (VAL))
 250
 251   int64 a[2];                   /* accumulators */
 252 #define ACC(N) (State.a[(N)] + 0)
 253 #define SET_ACC(N,VAL) SLOT_PEND (State.a[(N)], (VAL) & MASK40)
 254
 255   /* writeback info */
 256   struct slot slot[NR_SLOTS];
 257   int slot_nr;
 258
 259   /* trace data */
 260   struct {
 261     uint16 psw;
 262   } trace;
 263
 264   uint8 exe;
 265   int   exception;
 266   int   pc_changed;
 267
 268   /* NOTE: everything below this line is not reset by
 269      sim_create_inferior() */
 270
 271   struct d10v_memory mem;
 272
 273   enum _ins_type ins_type;
 274
 275 } State;
 276
 277
 278 extern host_callback *d10v_callback;
 279 extern uint16 OP[4];
 280 extern struct simops Simops[];
 281 extern asection *text;
 282 extern bfd_vma text_start;
 283 extern bfd_vma text_end;
 284 extern bfd *prog_bfd;
 285
 286 enum
 287 {
 288   PSW_CR = 0,
 289   BPSW_CR = 1,
 290   PC_CR = 2,
 291   BPC_CR = 3,
 292   DPSW_CR = 4,
 293   DPC_CR = 5,
 294   RPT_C_CR = 7,
 295   RPT_S_CR = 8,
 296   RPT_E_CR = 9,
 297   MOD_S_CR = 10,
 298   MOD_E_CR = 11,
 299   IBA_CR = 14,
 300 };
 301
 302 enum
 303 {
 304   PSW_SM_BIT = 0x8000,
 305   PSW_EA_BIT = 0x2000,
 306   PSW_DB_BIT = 0x1000,
 307   PSW_DM_BIT = 0x0800,
 308   PSW_IE_BIT = 0x0400,
 309   PSW_RP_BIT = 0x0200,
 310   PSW_MD_BIT = 0x0100,
 311   PSW_FX_BIT = 0x0080,
 312   PSW_ST_BIT = 0x0040,
 313   PSW_F0_BIT = 0x0008,
 314   PSW_F1_BIT = 0x0004,
 315   PSW_C_BIT =  0x0001,
 316 };
 317
 318 #define PSW CREG (PSW_CR)
 319 #define SET_PSW(VAL) SET_CREG (PSW_CR, (VAL))
 320 #define SET_HW_PSW(VAL) SET_HW_CREG (PSW_CR, (VAL))
 321 #define SET_PSW_BIT(MASK,VAL) move_to_cr (PSW_CR, ~((reg_t) MASK), (VAL) ? (MASK) : 0, 1)
 322
 323 #define PSW_SM ((PSW & PSW_SM_BIT) != 0)
 324 #define SET_PSW_SM(VAL) SET_PSW_BIT (PSW_SM_BIT, (VAL))
 325
 326 #define PSW_EA ((PSW & PSW_EA_BIT) != 0)
 327 #define SET_PSW_EA(VAL) SET_PSW_BIT (PSW_EA_BIT, (VAL))
 328
 329 #define PSW_DB ((PSW & PSW_DB_BIT) != 0)
 330 #define SET_PSW_DB(VAL) SET_PSW_BIT (PSW_DB_BIT, (VAL))
 331
 332 #define PSW_DM ((PSW & PSW_DM_BIT) != 0)
 333 #define SET_PSW_DM(VAL) SET_PSW_BIT (PSW_DM_BIT, (VAL))
 334
 335 #define PSW_IE ((PSW & PSW_IE_BIT) != 0)
 336 #define SET_PSW_IE(VAL) SET_PSW_BIT (PSW_IE_BIT, (VAL))
 337
 338 #define PSW_RP ((PSW & PSW_RP_BIT) != 0)
 339 #define SET_PSW_RP(VAL) SET_PSW_BIT (PSW_RP_BIT, (VAL))
 340
 341 #define PSW_MD ((PSW & PSW_MD_BIT) != 0)
 342 #define SET_PSW_MD(VAL) SET_PSW_BIT (PSW_MD_BIT, (VAL))
 343
 344 #define PSW_FX ((PSW & PSW_FX_BIT) != 0)
 345 #define SET_PSW_FX(VAL) SET_PSW_BIT (PSW_FX_BIT, (VAL))
 346
 347 #define PSW_ST ((PSW & PSW_ST_BIT) != 0)
 348 #define SET_PSW_ST(VAL) SET_PSW_BIT (PSW_ST_BIT, (VAL))
 349
 350 #define PSW_F0 ((PSW & PSW_F0_BIT) != 0)
 351 #define SET_PSW_F0(VAL) SET_PSW_BIT (PSW_F0_BIT, (VAL))
 352
 353 #define PSW_F1 ((PSW & PSW_F1_BIT) != 0)
 354 #define SET_PSW_F1(VAL) SET_PSW_BIT (PSW_F1_BIT, (VAL))
 355
 356 #define PSW_C ((PSW & PSW_C_BIT) != 0)
 357 #define SET_PSW_C(VAL) SET_PSW_BIT (PSW_C_BIT, (VAL))
 358
 359 /* See simopsc.:move_to_cr() for registers that can not be read-from
 360    or assigned-to directly */
 361
 362 #define PC      CREG (PC_CR)
 363 #define SET_PC(VAL) SET_CREG (PC_CR, (VAL))
 364
 365 #define BPSW    CREG (BPSW_CR)
 366 #define SET_BPSW(VAL) SET_CREG (BPSW_CR, (VAL))
 367
 368 #define BPC     CREG (BPC_CR)
 369 #define SET_BPC(VAL) SET_CREG (BPC_CR, (VAL))
 370
 371 #define DPSW    CREG (DPSW_CR)
 372 #define SET_DPSW(VAL) SET_CREG (DPSW_CR, (VAL))
 373
 374 #define DPC     CREG (DPC_CR)
 375 #define SET_DPC(VAL) SET_CREG (DPC_CR, (VAL))
 376
 377 #define RPT_C   CREG (RPT_C_CR)
 378 #define SET_RPT_C(VAL) SET_CREG (RPT_C_CR, (VAL))
 379
 380 #define RPT_S   CREG (RPT_S_CR)
 381 #define SET_RPT_S(VAL) SET_CREG (RPT_S_CR, (VAL))
 382
 383 #define RPT_E   CREG (RPT_E_CR)
 384 #define SET_RPT_E(VAL) SET_CREG (RPT_E_CR, (VAL))
 385
 386 #define MOD_S   CREG (MOD_S_CR)
 387 #define SET_MOD_S(VAL) SET_CREG (MOD_S_CR, (VAL))
 388
 389 #define MOD_E   CREG (MOD_E_CR)
 390 #define SET_MOD_E(VAL) SET_CREG (MOD_E_CR, (VAL))
 391
 392 #define IBA     CREG (IBA_CR)
 393 #define SET_IBA(VAL) SET_CREG (IBA_CR, (VAL))
 394
 395
 396 #define SIG_D10V_STOP   -1
 397 #define SIG_D10V_EXIT   -2
 398 #define SIG_D10V_BUS    -3
 399
 400 #define SEXT3(x)        ((((x)&0x7)^(~3))+4)
 401
 402 /* sign-extend a 4-bit number */
 403 #define SEXT4(x)        ((((x)&0xf)^(~7))+8)
 404
 405 /* sign-extend an 8-bit number */
 406 #define SEXT8(x)        ((((x)&0xff)^(~0x7f))+0x80)
 407
 408 /* sign-extend a 16-bit number */
 409 #define SEXT16(x)       ((((x)&0xffff)^(~0x7fff))+0x8000)
 410
 411 /* sign-extend a 32-bit number */
 412 #define SEXT32(x)       ((((x)&SIGNED64(0xffffffff))^(~SIGNED64(0x7fffffff)))+SIGNED64(0x80000000))
 413
 414 /* sign extend a 40 bit number */
 415 #define SEXT40(x)       ((((x)&SIGNED64(0xffffffffff))^(~SIGNED64(0x7fffffffff)))+SIGNED64(0x8000000000))
 416
 417 /* sign extend a 44 bit number */
 418 #define SEXT44(x)       ((((x)&SIGNED64(0xfffffffffff))^(~SIGNED64(0x7ffffffffff)))+SIGNED64(0x80000000000))
 419
 420 /* sign extend a 56 bit number */
 421 #define SEXT56(x)       ((((x)&SIGNED64(0xffffffffffffff))^(~SIGNED64(0x7fffffffffffff)))+SIGNED64(0x80000000000000))
 422
 423 /* sign extend a 60 bit number */
 424 #define SEXT60(x)       ((((x)&SIGNED64(0xfffffffffffffff))^(~SIGNED64(0x7ffffffffffffff)))+SIGNED64(0x800000000000000))
 425
 426 #define MAX32   SIGNED64(0x7fffffff)
 427 #define MIN32   SIGNED64(0xff80000000)
 428 #define MASK32  SIGNED64(0xffffffff)
 429 #define MASK40  SIGNED64(0xffffffffff)
 430
 431 /* The alignment of MOD_E in the following macro depends upon "i"
 432    always being a power of 2. */
 433 #define INC_ADDR(x,i) \
 434 do \
 435   { \
 436     int test_i = i < 0 ? i : ~((i) - 1); \
 437     if (PSW_MD && GPR (x) == (MOD_E & test_i)) \
 438       SET_GPR (x, MOD_S & test_i); \
 439     else \
 440       SET_GPR (x, GPR (x) + (i)); \
 441   } \
 442 while (0)
 443
 444 extern uint8 *dmem_addr (uint16 offset);
 445 extern uint8 *imem_addr (uint32);
 446 extern bfd_vma decode_pc (void);
 447
 448 #define RB(x)   (*(dmem_addr(x)))
 449 #define SB(addr,data)   ( RB(addr) = (data & 0xff))
 450
 451 #if defined(__GNUC__) && defined(__OPTIMIZE__) && !defined(NO_ENDIAN_INLINE)
 452 #define ENDIAN_INLINE static __inline__
 453 #include "endian.c"
 454 #undef ENDIAN_INLINE
 455
 456 #else
 457 extern uint32 get_longword (uint8 *);
 458 extern uint16 get_word (uint8 *);
 459 extern int64 get_longlong (uint8 *);
 460 extern void write_word (uint8 *addr, uint16 data);
 461 extern void write_longword (uint8 *addr, uint32 data);
 462 extern void write_longlong (uint8 *addr, int64 data);
 463 #endif
 464
 465 #define SW(addr,data)           write_word(dmem_addr(addr),data)
 466 #define RW(x)                   get_word(dmem_addr(x))
 467 #define SLW(addr,data)          write_longword(dmem_addr(addr),data)
 468 #define RLW(x)                  get_longword(dmem_addr(x))
 469 #define READ_16(x)              get_word(x)
 470 #define WRITE_16(addr,data)     write_word(addr,data)
 471 #define READ_64(x)              get_longlong(x)
 472 #define WRITE_64(addr,data)     write_longlong(addr,data)
 473
 474 #define JMP(x)                  do { SET_PC (x); State.pc_changed = 1; } while (0)
 475
 476 #define RIE_VECTOR_START 0xffc2
 477 #define AE_VECTOR_START 0xffc3
 478 #define TRAP_VECTOR_START 0xffc4        /* vector for trap 0 */
 479 #define DBT_VECTOR_START 0xffd4
 480 #define SDBT_VECTOR_START 0xffd5
 481
 482 /* Scedule a store of VAL into cr[CR].  MASK indicates the bits in
 483    cr[CR] that should not be modified (i.e. cr[CR] = (cr[CR] & MASK) |
 484    (VAL & ~MASK)).  In addition, unless PSW_HW_P, a VAL intended for
 485    PSW is masked for zero bits. */
 486
 487 extern reg_t move_to_cr (int cr, reg_t mask, reg_t val, int psw_hw_p);