ghc/includes/Regs.h

   1 /* -----------------------------------------------------------------------------
   2  * $Id: Regs.h,v 1.9 2000/03/23 17:45:31 simonpj Exp $
   3  *
   4  * (c) The GHC Team, 1998-1999
   5  *
   6  * Registers used in STG code.  Might or might not correspond to
   7  * actual machine registers.
   8  *
   9  * ---------------------------------------------------------------------------*/
  10
  11 #ifndef REGS_H
  12 #define REGS_H
  13
  14 /*
  15  * This file should do the right thing if we have no machine-registers
  16  * defined, i.e. everything lives in the RegTable.
  17  */
  18
  19 /*
  20  * This is the table that holds shadow-locations for all the STG
  21  * registers.  The shadow locations are used when:
  22  *
  23  *     1) the particular register isn't mapped to a real machine
  24  *        register, probably because there's a shortage of real registers.
  25  *     2) caller-saves registers are saved across a CCall
  26  */
  27
  28 typedef struct StgSparkPool_ {
  29   StgClosure **base;
  30   StgClosure **lim;
  31   StgClosure **hd;
  32   StgClosure **tl;
  33 } StgSparkPool;
  34
  35 typedef struct StgRegTable_ {
  36   StgUnion        rR1;
  37   StgUnion        rR2;
  38   StgUnion        rR3;
  39   StgUnion        rR4;
  40   StgUnion        rR5;
  41   StgUnion        rR6;
  42   StgUnion        rR7;
  43   StgUnion        rR8;
  44   StgUnion        rR9;          /* used occasionally by heap/stack checks */
  45   StgUnion        rR10;         /* used occasionally by heap/stack checks */
  46   StgFloat        rF1;
  47   StgFloat        rF2;
  48   StgFloat        rF3;
  49   StgFloat        rF4;
  50   StgDouble       rD1;
  51   StgDouble       rD2;
  52   StgWord64       rL1;
  53   StgPtr          rSp;
  54   StgUpdateFrame *rSu;
  55   StgPtr          rSpLim;
  56   StgPtr          rHp;
  57   StgPtr          rHpLim;
  58   StgTSO         *rCurrentTSO;
  59   struct _bdescr *rNursery;
  60   struct _bdescr *rCurrentNursery;
  61 #if defined(SMP) || defined(PAR)
  62   StgSparkPool   rSparks;       /* per-task spark pool */
  63 #endif
  64 #if defined(SMP)
  65   struct StgRegTable_ *link;    /* per-task register tables are linked together */
  66 #endif
  67 } StgRegTable;
  68
  69 /* No such thing as a MainRegTable under SMP - each thread must
  70  * have its own MainRegTable.
  71  */
  72 #ifndef SMP
  73 extern DLL_IMPORT_RTS StgRegTable  MainRegTable;
  74 #endif
  75
  76 #if IN_STG_CODE
  77
  78 /*
  79  * Registers Hp and HpLim are global across the entire system, and are
  80  * copied into the RegTable before executing a thread.
  81  *
  82  * Registers Sp, Su, and SpLim are saved in the TSO for the
  83  * thread, but are copied into the RegTable before executing a thread.
  84  *
  85  * All other registers are "general purpose", and are used for passing
  86  * arguments to functions, and returning values.  The code generator
  87  * knows how many of these are in real registers, and avoids
  88  * generating code that uses non-real registers.  General purpose
  89  * registers are never saved when returning to the scheduler, instead
  90  * we save whatever is live at the time on the stack, and restore it
  91  * later.  This should reduce the context switch time, amongst other
  92  * things.
  93  *
  94  * For argument passing, the stack will be used in preference to
  95  * pseudo-registers if the architecture has too few general purpose
  96  * registers.
  97  *
  98  * Some special RTS functions like newArray and the Integer primitives
  99  * expect their arguments to be in registers R1-Rn, so we use these
 100  * (pseudo-)registers in those cases.
 101  */
 102
 103 /*
 104  * Locations for saving per-thread registers.
 105  */
 106
 107 #define SAVE_Sp             (CurrentTSO->sp)
 108 #define SAVE_Su             (CurrentTSO->su)
 109 #define SAVE_SpLim          (CurrentTSO->splim)
 110
 111 #define SAVE_Hp             (BaseReg->rHp)
 112 #define SAVE_HpLim          (BaseReg->rHpLim)
 113
 114 #define SAVE_CurrentTSO     (BaseReg->rCurrentTSO)
 115 #define SAVE_CurrentNursery (BaseReg->rCurrentNursery)
 116 #if defined(SMP) || defined(PAR)
 117 #define SAVE_SparkHd        (BaseReg->rSparks.hd)
 118 #define SAVE_SparkTl        (BaseReg->rSparks.tl)
 119 #define SAVE_SparkBase      (BaseReg->rSparks.base)
 120 #define SAVE_SparkLim       (BaseReg->rSparks.lim)
 121 #endif
 122
 123 /* We sometimes need to save registers across a C-call, eg. if they
 124  * are clobbered in the standard calling convention.  We define the
 125  * save locations for all registers in the register table.
 126  */
 127
 128 #define SAVE_R1             (BaseReg->rR1)
 129 #define SAVE_R2             (BaseReg->rR2)
 130 #define SAVE_R3             (BaseReg->rR3)
 131 #define SAVE_R4             (BaseReg->rR4)
 132 #define SAVE_R5             (BaseReg->rR5)
 133 #define SAVE_R6             (BaseReg->rR6)
 134 #define SAVE_R7             (BaseReg->rR7)
 135 #define SAVE_R8             (BaseReg->rR8)
 136
 137 #define SAVE_F1             (BaseReg->rF1)
 138 #define SAVE_F2             (BaseReg->rF2)
 139 #define SAVE_F3             (BaseReg->rF3)
 140 #define SAVE_F4             (BaseReg->rF4)
 141
 142 #define SAVE_D1             (BaseReg->rD1)
 143 #define SAVE_D2             (BaseReg->rD2)
 144
 145 #define SAVE_L1             (BaseReg->rL1)
 146
 147 /* -----------------------------------------------------------------------------
 148  * Emit the GCC-specific register declarations for each machine
 149  * register being used.  If any STG register isn't mapped to a machine
 150  * register, then map it to an offset from BaseReg.
 151  *
 152  * First, the general purpose registers.  The idea is, if a particular
 153  * general-purpose STG register can't be mapped to a real machine
 154  * register, it won't be used at all.  Instead, we'll use the stack.
 155  *
 156  * This is an improvement on the way things used to be done, when all
 157  * registers were mapped to locations in the register table, and stuff
 158  * was being shifted from the stack to the register table and back
 159  * again for no good reason (on register-poor architectures).
 160  */
 161
 162 #define GLOBAL_REG_DECL(type,name,reg) register type name REG(reg);
 163
 164 #ifdef REG_R1
 165 GLOBAL_REG_DECL(StgUnion,R1,REG_R1)
 166 #else
 167 #define R1 (BaseReg->rR1)
 168 #endif
 169
 170 #ifdef REG_R2
 171 GLOBAL_REG_DECL(StgUnion,R2,REG_R2)
 172 #else
 173 #define R2 (BaseReg->rR2)
 174 #endif
 175
 176 #ifdef REG_R3
 177 GLOBAL_REG_DECL(StgUnion,R3,REG_R3)
 178 #else
 179 # define R3 (BaseReg->rR3)
 180 #endif
 181
 182 #ifdef REG_R4
 183 GLOBAL_REG_DECL(StgUnion,R4,REG_R4)
 184 #else
 185 # define R4 (BaseReg->rR4)
 186 #endif
 187
 188 #ifdef REG_R5
 189 GLOBAL_REG_DECL(StgUnion,R5,REG_R5)
 190 #else
 191 # define R5 (BaseReg->rR5)
 192 #endif
 193
 194 #ifdef REG_R6
 195 GLOBAL_REG_DECL(StgUnion,R6,REG_R6)
 196 #else
 197 # define R6 (BaseReg->rR6)
 198 #endif
 199
 200 #ifdef REG_R7
 201 GLOBAL_REG_DECL(StgUnion,R7,REG_R7)
 202 #else
 203 # define R7 (BaseReg->rR7)
 204 #endif
 205
 206 #ifdef REG_R8
 207 GLOBAL_REG_DECL(StgUnion,R8,REG_R8)
 208 #else
 209 # define R8 (BaseReg->rR8)
 210 #endif
 211
 212 #ifdef REG_R9
 213 GLOBAL_REG_DECL(StgUnion,R9,REG_R9)
 214 #else
 215 # define R9 (BaseReg->rR9)
 216 #endif
 217
 218 #ifdef REG_R10
 219 GLOBAL_REG_DECL(StgUnion,R10,REG_R10)
 220 #else
 221 # define R10 (BaseReg->rR10)
 222 #endif
 223
 224 #ifdef REG_F1
 225 GLOBAL_REG_DECL(StgFloat,F1,REG_F1)
 226 #else
 227 #define F1 (BaseReg->rF1)
 228 #endif
 229
 230 #ifdef REG_F2
 231 GLOBAL_REG_DECL(StgFloat,F2,REG_F2)
 232 #else
 233 #define F2 (BaseReg->rF2)
 234 #endif
 235
 236 #ifdef REG_F3
 237 GLOBAL_REG_DECL(StgFloat,F3,REG_F3)
 238 #else
 239 #define F3 (BaseReg->rF3)
 240 #endif
 241
 242 #ifdef REG_F4
 243 GLOBAL_REG_DECL(StgFloat,F4,REG_F4)
 244 #else
 245 #define F4 (BaseReg->rF4)
 246 #endif
 247
 248 #ifdef REG_D1
 249 GLOBAL_REG_DECL(StgDouble,D1,REG_D1)
 250 #else
 251 #define D1 (BaseReg->rD1)
 252 #endif
 253
 254 #ifdef REG_D2
 255 GLOBAL_REG_DECL(StgDouble,D2,REG_D2)
 256 #else
 257 #define D2 (BaseReg->rD2)
 258 #endif
 259
 260 #ifdef REG_L1
 261 GLOBAL_REG_DECL(StgWord64,L1,REG_L1)
 262 #else
 263 #define L1 (BaseReg->rL1)
 264 #endif
 265
 266 /*
 267  * If BaseReg isn't mapped to a machine register, just use the global
 268  * address of the current register table (CurrentRegTable in
 269  * concurrent Haskell, MainRegTable otherwise).
 270  */
 271
 272 #ifdef REG_Base
 273 GLOBAL_REG_DECL(StgRegTable *,BaseReg,REG_Base)
 274 #else
 275 #ifdef SMP
 276 #error BaseReg must be in a register for SMP
 277 #endif
 278 #define BaseReg (&MainRegTable)
 279 #endif
 280
 281 #ifdef REG_Sp
 282 GLOBAL_REG_DECL(P_,Sp,REG_Sp)
 283 #else
 284 #define Sp (BaseReg->rSp)
 285 #endif
 286
 287 #ifdef REG_Su
 288 GLOBAL_REG_DECL(StgUpdateFrame *,Su,REG_Su)
 289 #else
 290 #define Su (BaseReg->rSu)
 291 #endif
 292
 293 #ifdef REG_SpLim
 294 GLOBAL_REG_DECL(P_,SpLim,REG_SpLim)
 295 #else
 296 #define SpLim (BaseReg->rSpLim)
 297 #endif
 298
 299 #ifdef REG_Hp
 300 GLOBAL_REG_DECL(P_,Hp,REG_Hp)
 301 #else
 302 #define Hp (BaseReg->rHp)
 303 #endif
 304
 305 #ifdef REG_HpLim
 306 GLOBAL_REG_DECL(P_,HpLim,REG_HpLim)
 307 #else
 308 #define HpLim (BaseReg->rHpLim)
 309 #endif
 310
 311 #ifdef REG_CurrentTSO
 312 GLOBAL_REG_DECL(StgTSO *,CurrentTSO,REG_CurrentTSO)
 313 #else
 314 #define CurrentTSO (BaseReg->rCurrentTSO)
 315 #endif
 316
 317 #ifdef REG_CurrentNursery
 318 GLOBAL_REG_DECL(bdescr *,CurrentNursery,REG_CurrentNursery)
 319 #else
 320 #define CurrentNursery (BaseReg->rCurrentNursery)
 321 #endif
 322
 323 #ifdef REG_SparkHd
 324 GLOBAL_REG_DECL(bdescr *,SparkHd,REG_SparkHd)
 325 #else
 326 #define SparkHd (BaseReg->rSparks.hd)
 327 #endif
 328
 329 #ifdef REG_SparkTl
 330 GLOBAL_REG_DECL(bdescr *,SparkTl,REG_SparkTl)
 331 #else
 332 #define SparkTl (BaseReg->rSparks.tl)
 333 #endif
 334
 335 #ifdef REG_SparkBase
 336 GLOBAL_REG_DECL(bdescr *,SparkBase,REG_SparkBase)
 337 #else
 338 #define SparkBase (BaseReg->rSparks.base)
 339 #endif
 340
 341 #ifdef REG_SparkLim
 342 GLOBAL_REG_DECL(bdescr *,SparkLim,REG_SparkLim)
 343 #else
 344 #define SparkLim (BaseReg->rSparks.lim)
 345 #endif
 346
 347 /* -----------------------------------------------------------------------------
 348    For any registers which are denoted "caller-saves" by the C calling
 349    convention, we have to emit code to save and restore them across C
 350    calls.
 351    -------------------------------------------------------------------------- */
 352
 353 #ifdef CALLER_SAVES_R1
 354 #define CALLER_SAVE_R1          SAVE_R1 = R1;
 355 #define CALLER_RESTORE_R1       R1 = SAVE_R1;
 356 #else
 357 #define CALLER_SAVE_R1          /* nothing */
 358 #define CALLER_RESTORE_R1       /* nothing */
 359 #endif
 360
 361 #ifdef CALLER_SAVES_R2
 362 #define CALLER_SAVE_R2          SAVE_R2 = R2;
 363 #define CALLER_RESTORE_R2       R2 = SAVE_R2;
 364 #else
 365 #define CALLER_SAVE_R2          /* nothing */
 366 #define CALLER_RESTORE_R2       /* nothing */
 367 #endif
 368
 369 #ifdef CALLER_SAVES_R3
 370 #define CALLER_SAVE_R3          SAVE_R3 = R3;
 371 #define CALLER_RESTORE_R3       R3 = SAVE_R3;
 372 #else
 373 #define CALLER_SAVE_R3          /* nothing */
 374 #define CALLER_RESTORE_R3       /* nothing */
 375 #endif
 376
 377 #ifdef CALLER_SAVES_R4
 378 #define CALLER_SAVE_R4          SAVE_R4 = R4;
 379 #define CALLER_RESTORE_R4       R4 = SAVE_R4;
 380 #else
 381 #define CALLER_SAVE_R4          /* nothing */
 382 #define CALLER_RESTORE_R4       /* nothing */
 383 #endif
 384
 385 #ifdef CALLER_SAVES_R5
 386 #define CALLER_SAVE_R5          SAVE_R5 = R5;
 387 #define CALLER_RESTORE_R5       R5 = SAVE_R5;
 388 #else
 389 #define CALLER_SAVE_R5          /* nothing */
 390 #define CALLER_RESTORE_R5       /* nothing */
 391 #endif
 392
 393 #ifdef CALLER_SAVES_R6
 394 #define CALLER_SAVE_R6          SAVE_R6 = R6;
 395 #define CALLER_RESTORE_R6       R6 = SAVE_R6;
 396 #else
 397 #define CALLER_SAVE_R6          /* nothing */
 398 #define CALLER_RESTORE_R6       /* nothing */
 399 #endif
 400
 401 #ifdef CALLER_SAVES_R7
 402 #define CALLER_SAVE_R7          SAVE_R7 = R7;
 403 #define CALLER_RESTORE_R7       R7 = SAVE_R7;
 404 #else
 405 #define CALLER_SAVE_R7          /* nothing */
 406 #define CALLER_RESTORE_R7       /* nothing */
 407 #endif
 408
 409 #ifdef CALLER_SAVES_R8
 410 #define CALLER_SAVE_R8          SAVE_R8 = R8;
 411 #define CALLER_RESTORE_R8       R8 = SAVE_R8;
 412 #else
 413 #define CALLER_SAVE_R8          /* nothing */
 414 #define CALLER_RESTORE_R8       /* nothing */
 415 #endif
 416
 417 #ifdef CALLER_SAVES_R9
 418 #define CALLER_SAVE_R9          SAVE_R9 = R9;
 419 #define CALLER_RESTORE_R9       R9 = SAVE_R9;
 420 #else
 421 #define CALLER_SAVE_R9          /* nothing */
 422 #define CALLER_RESTORE_R9       /* nothing */
 423 #endif
 424
 425 #ifdef CALLER_SAVES_R10
 426 #define CALLER_SAVE_R10         SAVE_R10 = R10;
 427 #define CALLER_RESTORE_R10      R10 = SAVE_R10;
 428 #else
 429 #define CALLER_SAVE_R10         /* nothing */
 430 #define CALLER_RESTORE_R10      /* nothing */
 431 #endif
 432
 433 #ifdef CALLER_SAVES_F1
 434 #define CALLER_SAVE_F1          SAVE_F1 = F1;
 435 #define CALLER_RESTORE_F1       F1 = SAVE_F1;
 436 #else
 437 #define CALLER_SAVE_F1          /* nothing */
 438 #define CALLER_RESTORE_F1       /* nothing */
 439 #endif
 440
 441 #ifdef CALLER_SAVES_F2
 442 #define CALLER_SAVE_F2          SAVE_F2 = F2;
 443 #define CALLER_RESTORE_F2       F2 = SAVE_F2;
 444 #else
 445 #define CALLER_SAVE_F2          /* nothing */
 446 #define CALLER_RESTORE_F2       /* nothing */
 447 #endif
 448
 449 #ifdef CALLER_SAVES_F3
 450 #define CALLER_SAVE_F3          SAVE_F3 = F3;
 451 #define CALLER_RESTORE_F3       F3 = SAVE_F3;
 452 #else
 453 #define CALLER_SAVE_F3          /* nothing */
 454 #define CALLER_RESTORE_F3       /* nothing */
 455 #endif
 456
 457 #ifdef CALLER_SAVES_F4
 458 #define CALLER_SAVE_F4          SAVE_F4 = F4;
 459 #define CALLER_RESTORE_F4       F4 = SAVE_F4;
 460 #else
 461 #define CALLER_SAVE_F4          /* nothing */
 462 #define CALLER_RESTORE_F4       /* nothing */
 463 #endif
 464
 465 #ifdef CALLER_SAVES_D1
 466 #define CALLER_SAVE_D1          SAVE_D1 = D1;
 467 #define CALLER_RESTORE_D1       D1 = SAVE_D1;
 468 #else
 469 #define CALLER_SAVE_D1          /* nothing */
 470 #define CALLER_RESTORE_D1       /* nothing */
 471 #endif
 472
 473 #ifdef CALLER_SAVES_D2
 474 #define CALLER_SAVE_D2          SAVE_D2 = D2;
 475 #define CALLER_RESTORE_D2       D2 = SAVE_D2;
 476 #else
 477 #define CALLER_SAVE_D2          /* nothing */
 478 #define CALLER_RESTORE_D2       /* nothing */
 479 #endif
 480
 481 #ifdef CALLER_SAVES_L1
 482 #define CALLER_SAVE_L1          SAVE_L1 = L1;
 483 #define CALLER_RESTORE_L1       L1 = SAVE_L1;
 484 #else
 485 #define CALLER_SAVE_L1          /* nothing */
 486 #define CALLER_RESTORE_L1       /* nothing */
 487 #endif
 488
 489 #ifdef CALLER_SAVES_Sp
 490 #define CALLER_SAVE_Sp          SAVE_Sp = Sp;
 491 #define CALLER_RESTORE_Sp       Sp = SAVE_Sp;
 492 #else
 493 #define CALLER_SAVE_Sp          /* nothing */
 494 #define CALLER_RESTORE_Sp       /* nothing */
 495 #endif
 496
 497 #ifdef CALLER_SAVES_Su
 498 #define CALLER_SAVE_Su          SAVE_Su = Su;
 499 #define CALLER_RESTORE_Su       Su = SAVE_Su;
 500 #else
 501 #define CALLER_SAVE_Su          /* nothing */
 502 #define CALLER_RESTORE_Su       /* nothing */
 503 #endif
 504
 505 #ifdef CALLER_SAVES_SpLim
 506 #define CALLER_SAVE_SpLim       SAVE_SpLim = SpLim;
 507 #define CALLER_RESTORE_SpLim    SpLim = SAVE_SpLim;
 508 #else
 509 #define CALLER_SAVE_SpLim       /* nothing */
 510 #define CALLER_RESTORE_SpLim    /* nothing */
 511 #endif
 512
 513 #ifdef CALLER_SAVES_Hp
 514 #define CALLER_SAVE_Hp          SAVE_Hp = Hp;
 515 #define CALLER_RESTORE_Hp       Hp = SAVE_Hp;
 516 #else
 517 #define CALLER_SAVE_Hp          /* nothing */
 518 #define CALLER_RESTORE_Hp       /* nothing */
 519 #endif
 520
 521 #ifdef CALLER_SAVES_HpLim
 522 #define CALLER_SAVE_HpLim       SAVE_HpLim = HpLim;
 523 #define CALLER_RESTORE_HpLim    HpLim = SAVE_HpLim;
 524 #else
 525 #define CALLER_SAVE_HpLim       /* nothing */
 526 #define CALLER_RESTORE_HpLim    /* nothing */
 527 #endif
 528
 529 #ifdef CALLER_SAVES_Base
 530 #ifdef SMP
 531 #error "Can't have caller-saved BaseReg with SMP"
 532 #endif
 533 #define CALLER_SAVE_Base        /* nothing */
 534 #define CALLER_RESTORE_Base     BaseReg = &MainRegTable;
 535 #else
 536 #define CALLER_SAVE_Base        /* nothing */
 537 #define CALLER_RESTORE_Base     /* nothing */
 538 #endif
 539
 540 #ifdef CALLER_SAVES_CurrentTSO
 541 #define CALLER_SAVE_CurrentTSO          SAVE_CurrentTSO = CurrentTSO;
 542 #define CALLER_RESTORE_CurrentTSO       CurrentTSO = SAVE_CurrentTSO;
 543 #else
 544 #define CALLER_SAVE_CurrentTSO          /* nothing */
 545 #define CALLER_RESTORE_CurrentTSO       /* nothing */
 546 #endif
 547
 548 #ifdef CALLER_SAVES_CurrentNursery
 549 #define CALLER_SAVE_CurrentNursery      SAVE_CurrentNursery = CurrentNursery;
 550 #define CALLER_RESTORE_CurrentNursery   CurrentNursery = SAVE_CurrentNursery;
 551 #else
 552 #define CALLER_SAVE_CurrentNursery      /* nothing */
 553 #define CALLER_RESTORE_CurrentNursery   /* nothing */
 554 #endif
 555
 556 #ifdef CALLER_SAVES_SparkHd
 557 #define CALLER_SAVE_SparkHd             SAVE_SparkHd = SparkHd;
 558 #define CALLER_RESTORE_SparkHd          SparkHd = SAVE_SparkHd;
 559 #else
 560 #define CALLER_SAVE_SparkHd             /* nothing */
 561 #define CALLER_RESTORE_SparkHd          /* nothing */
 562 #endif
 563
 564 #ifdef CALLER_SAVES_SparkTl
 565 #define CALLER_SAVE_SparkTl             SAVE_SparkTl = SparkTl;
 566 #define CALLER_RESTORE_SparkTl          SparkTl = SAVE_SparkTl;
 567 #else
 568 #define CALLER_SAVE_SparkTl             /* nothing */
 569 #define CALLER_RESTORE_SparkTl          /* nothing */
 570 #endif
 571
 572 #ifdef CALLER_SAVES_SparkBase
 573 #define CALLER_SAVE_SparkBase           SAVE_SparkBase = SparkBase;
 574 #define CALLER_RESTORE_SparkBase        SparkBase = SAVE_SparkBase;
 575 #else
 576 #define CALLER_SAVE_SparkBase           /* nothing */
 577 #define CALLER_RESTORE_SparkBase        /* nothing */
 578 #endif
 579
 580 #ifdef CALLER_SAVES_SparkLim
 581 #define CALLER_SAVE_SparkLim            SAVE_SparkLim = SparkLim;
 582 #define CALLER_RESTORE_SparkLim         SparkLim = SAVE_SparkLim;
 583 #else
 584 #define CALLER_SAVE_SparkLim            /* nothing */
 585 #define CALLER_RESTORE_SparkLim         /* nothing */
 586 #endif
 587
 588 #endif /* IN_STG_CODE */
 589
 590 /* ----------------------------------------------------------------------------
 591    Handy bunches of saves/restores
 592    ------------------------------------------------------------------------  */
 593
 594 #if IN_STG_CODE
 595
 596 #define CALLER_SAVE_USER                        \
 597   CALLER_SAVE_R1                                \
 598   CALLER_SAVE_R2                                \
 599   CALLER_SAVE_R3                                \
 600   CALLER_SAVE_R4                                \
 601   CALLER_SAVE_R5                                \
 602   CALLER_SAVE_R6                                \
 603   CALLER_SAVE_R7                                \
 604   CALLER_SAVE_R8                                \
 605   CALLER_SAVE_F1                                \
 606   CALLER_SAVE_F2                                \
 607   CALLER_SAVE_F3                                \
 608   CALLER_SAVE_F4                                \
 609   CALLER_SAVE_D1                                \
 610   CALLER_SAVE_D2                                \
 611   CALLER_SAVE_L1
 612
 613      /* Save Base last, since the others may
 614         be addressed relative to it */
 615 #define CALLER_SAVE_SYSTEM                      \
 616   CALLER_SAVE_Sp                                \
 617   CALLER_SAVE_Su                                \
 618   CALLER_SAVE_SpLim                             \
 619   CALLER_SAVE_Hp                                \
 620   CALLER_SAVE_HpLim                             \
 621   CALLER_SAVE_CurrentTSO                        \
 622   CALLER_SAVE_CurrentNursery                    \
 623   CALLER_SAVE_SparkHd                           \
 624   CALLER_SAVE_SparkTl                           \
 625   CALLER_SAVE_SparkBase                         \
 626   CALLER_SAVE_SparkLim                          \
 627   CALLER_SAVE_Base
 628
 629 #define CALLER_RESTORE_USER                     \
 630   CALLER_RESTORE_R1                             \
 631   CALLER_RESTORE_R2                             \
 632   CALLER_RESTORE_R3                             \
 633   CALLER_RESTORE_R4                             \
 634   CALLER_RESTORE_R5                             \
 635   CALLER_RESTORE_R6                             \
 636   CALLER_RESTORE_R7                             \
 637   CALLER_RESTORE_R8                             \
 638   CALLER_RESTORE_F1                             \
 639   CALLER_RESTORE_F2                             \
 640   CALLER_RESTORE_F3                             \
 641   CALLER_RESTORE_F4                             \
 642   CALLER_RESTORE_D1                             \
 643   CALLER_RESTORE_D2                             \
 644   CALLER_RESTORE_L1
 645
 646      /* Restore Base first, since the others may
 647         be addressed relative to it */
 648 #define CALLER_RESTORE_SYSTEM                   \
 649   CALLER_RESTORE_Base                           \
 650   CALLER_RESTORE_Sp                             \
 651   CALLER_RESTORE_Su                             \
 652   CALLER_RESTORE_SpLim                          \
 653   CALLER_RESTORE_Hp                             \
 654   CALLER_RESTORE_HpLim                          \
 655   CALLER_RESTORE_CurrentTSO                     \
 656   CALLER_RESTORE_CurrentNursery                 \
 657   CALLER_RESTORE_SparkHd                        \
 658   CALLER_RESTORE_SparkTl                        \
 659   CALLER_RESTORE_SparkBase                      \
 660   CALLER_RESTORE_SparkLim
 661
 662 #else /* not IN_STG_CODE */
 663
 664 #define CALLER_SAVE_USER       /* nothing */
 665 #define CALLER_SAVE_SYSTEM     /* nothing */
 666 #define CALLER_RESTORE_USER    /* nothing */
 667 #define CALLER_RESTORE_SYSTEM  /* nothing */
 668
 669 #endif /* IN_STG_CODE */
 670
 671 #define CALLER_SAVE_ALL                         \
 672   CALLER_SAVE_SYSTEM                            \
 673   CALLER_SAVE_USER
 674
 675 #define CALLER_RESTORE_ALL                      \
 676   CALLER_RESTORE_SYSTEM                         \
 677   CALLER_RESTORE_USER
 678
 679 #endif /* REGS_H */
 680