1 /* -----------------------------------------------------------------------------
2 * $Id: PrimOps.h,v 1.63 2000/09/26 16:45:34 simonpj Exp $
4 * (c) The GHC Team, 1998-1999
6 * Macros for primitive operations in STG-ish C code.
8 * ---------------------------------------------------------------------------*/
13 /* -----------------------------------------------------------------------------
14 Helpers for the metacircular interpreter.
15 -------------------------------------------------------------------------- */
19 #define CHASE_INDIRECTIONS(lval) \
24 if (get_itbl((StgClosure*)lval)->type == IND) \
25 { again = 1; lval = ((StgInd*)lval)->indirectee; } \
27 if (get_itbl((StgClosure*)lval)->type == IND_OLDGEN) \
28 { again = 1; lval = ((StgIndOldGen*)lval)->indirectee; } \
32 #define indexWordOffClosurezh(r,a,i) \
33 do { StgClosure* tmp = (StgClosure*)(a); \
34 CHASE_INDIRECTIONS(tmp); \
38 #define indexPtrOffClosurezh(r,a,i) \
39 do { StgClosure* tmp = (StgClosure*)(a); \
40 CHASE_INDIRECTIONS(tmp); \
47 /* These are the original definitions. They don't chase indirections. */
48 #define indexWordOffClosurezh(r,a,i) r= ((W_ *)(a))[i]
49 #define indexPtrOffClosurezh(r,a,i) r= ((P_ *)(a))[i]
54 /* -----------------------------------------------------------------------------
56 -------------------------------------------------------------------------- */
58 #define gtCharzh(r,a,b) r=(I_)((a)> (b))
59 #define geCharzh(r,a,b) r=(I_)((a)>=(b))
60 #define eqCharzh(r,a,b) r=(I_)((a)==(b))
61 #define neCharzh(r,a,b) r=(I_)((a)!=(b))
62 #define ltCharzh(r,a,b) r=(I_)((a)< (b))
63 #define leCharzh(r,a,b) r=(I_)((a)<=(b))
65 /* Int comparisons: >#, >=# etc */
66 #define zgzh(r,a,b) r=(I_)((I_)(a) >(I_)(b))
67 #define zgzezh(r,a,b) r=(I_)((I_)(a)>=(I_)(b))
68 #define zezezh(r,a,b) r=(I_)((I_)(a)==(I_)(b))
69 #define zszezh(r,a,b) r=(I_)((I_)(a)!=(I_)(b))
70 #define zlzh(r,a,b) r=(I_)((I_)(a) <(I_)(b))
71 #define zlzezh(r,a,b) r=(I_)((I_)(a)<=(I_)(b))
73 #define gtWordzh(r,a,b) r=(I_)((W_)(a) >(W_)(b))
74 #define geWordzh(r,a,b) r=(I_)((W_)(a)>=(W_)(b))
75 #define eqWordzh(r,a,b) r=(I_)((W_)(a)==(W_)(b))
76 #define neWordzh(r,a,b) r=(I_)((W_)(a)!=(W_)(b))
77 #define ltWordzh(r,a,b) r=(I_)((W_)(a) <(W_)(b))
78 #define leWordzh(r,a,b) r=(I_)((W_)(a)<=(W_)(b))
80 #define gtAddrzh(r,a,b) r=(I_)((a) >(b))
81 #define geAddrzh(r,a,b) r=(I_)((a)>=(b))
82 #define eqAddrzh(r,a,b) r=(I_)((a)==(b))
83 #define neAddrzh(r,a,b) r=(I_)((a)!=(b))
84 #define ltAddrzh(r,a,b) r=(I_)((a) <(b))
85 #define leAddrzh(r,a,b) r=(I_)((a)<=(b))
87 #define gtFloatzh(r,a,b) r=(I_)((a)> (b))
88 #define geFloatzh(r,a,b) r=(I_)((a)>=(b))
89 #define eqFloatzh(r,a,b) r=(I_)((a)==(b))
90 #define neFloatzh(r,a,b) r=(I_)((a)!=(b))
91 #define ltFloatzh(r,a,b) r=(I_)((a)< (b))
92 #define leFloatzh(r,a,b) r=(I_)((a)<=(b))
94 /* Double comparisons: >##, >=#@ etc */
95 #define zgzhzh(r,a,b) r=(I_)((a) >(b))
96 #define zgzezhzh(r,a,b) r=(I_)((a)>=(b))
97 #define zezezhzh(r,a,b) r=(I_)((a)==(b))
98 #define zszezhzh(r,a,b) r=(I_)((a)!=(b))
99 #define zlzhzh(r,a,b) r=(I_)((a) <(b))
100 #define zlzezhzh(r,a,b) r=(I_)((a)<=(b))
102 /* -----------------------------------------------------------------------------
104 -------------------------------------------------------------------------- */
106 #define ordzh(r,a) r=(I_)((W_) (a))
107 #define chrzh(r,a) r=(StgChar)((W_)(a))
109 /* -----------------------------------------------------------------------------
111 -------------------------------------------------------------------------- */
113 I_ stg_div (I_ a, I_ b);
115 #define zpzh(r,a,b) r=(a)+(b)
116 #define zmzh(r,a,b) r=(a)-(b)
117 #define ztzh(r,a,b) r=(a)*(b)
118 #define quotIntzh(r,a,b) r=(a)/(b)
119 #define zszh(r,a,b) r=ULTRASAFESTGCALL2(I_,(void *, I_, I_),stg_div,(a),(b))
120 #define remIntzh(r,a,b) r=(a)%(b)
121 #define negateIntzh(r,a) r=-(a)
123 /* -----------------------------------------------------------------------------
124 * Int operations with carry.
125 * -------------------------------------------------------------------------- */
127 /* With some bit-twiddling, we can define int{Add,Sub}Czh portably in
128 * C, and without needing any comparisons. This may not be the
129 * fastest way to do it - if you have better code, please send it! --SDM
131 * Return : r = a + b, c = 0 if no overflow, 1 on overflow.
133 * We currently don't make use of the r value if c is != 0 (i.e.
134 * overflow), we just convert to big integers and try again. This
135 * could be improved by making r and c the correct values for
136 * plugging into a new J#.
138 #define addIntCzh(r,c,a,b) \
140 c = ((StgWord)(~(a^b) & (a^r))) \
141 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
145 #define subIntCzh(r,c,a,b) \
147 c = ((StgWord)((a^b) & (a^r))) \
148 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
151 /* Multiply with overflow checking.
153 * This is slightly more tricky - the usual sign rules for add/subtract
156 * On x86 hardware we use a hand-crafted assembly fragment to do the job.
158 * On other 32-bit machines we use gcc's 'long long' types, finding
159 * overflow with some careful bit-twiddling.
161 * On 64-bit machines where gcc's 'long long' type is also 64-bits,
162 * we use a crude approximation, testing whether either operand is
163 * larger than 32-bits; if neither is, then we go ahead with the
169 #define mulIntCzh(r,c,a,b) \
171 __asm__("xorl %1,%1\n\t \
176 : "=r" (r), "=&r" (c) : "r" (a), "0" (b)); \
179 #elif SIZEOF_VOID_P == 4
181 #ifdef WORDS_BIGENDIAN
194 #define mulIntCzh(r,c,a,b) \
197 z.l = (StgInt64)a * (StgInt64)b; \
200 if (c == 0 || c == -1) { \
201 c = ((StgWord)((a^b) ^ r)) \
202 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
205 /* Careful: the carry calculation above is extremely delicate. Make sure
206 * you test it thoroughly after changing it.
211 #define HALF_INT (1 << (BITS_PER_BYTE * sizeof(I_) / 2))
213 #define stg_abs(a) ((a) < 0 ? -(a) : (a))
215 #define mulIntCzh(r,c,a,b) \
217 if (stg_abs(a) >= HALF_INT \
218 stg_abs(b) >= HALF_INT) { \
227 /* -----------------------------------------------------------------------------
229 -------------------------------------------------------------------------- */
231 #define quotWordzh(r,a,b) r=((W_)a)/((W_)b)
232 #define remWordzh(r,a,b) r=((W_)a)%((W_)b)
234 #define andzh(r,a,b) r=(a)&(b)
235 #define orzh(r,a,b) r=(a)|(b)
236 #define xorzh(r,a,b) r=(a)^(b)
237 #define notzh(r,a) r=~(a)
239 /* The extra tests below properly define the behaviour when shifting
240 * by offsets larger than the width of the value being shifted. Doing
241 * so is undefined in C (and in fact gives different answers depending
242 * on whether the operation is constant folded or not with gcc on x86!)
245 #define shiftLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)<<(b)
246 #define shiftRLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)>>(b)
247 #define iShiftLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)<<(b)
248 /* Right shifting of signed quantities is not portable in C, so
249 the behaviour you'll get from using these primops depends
250 on the whatever your C compiler is doing. ToDo: fix/document. -- sof 8/98
252 #define iShiftRAzh(r,a,b) r=((b) >= BITS_IN(I_)) ? (((a) < 0) ? -1 : 0) : (a)>>(b)
253 #define iShiftRLzh(r,a,b) r=((b) >= BITS_IN(I_)) ? 0 : ((W_)(a))>>(b)
255 #define int2Wordzh(r,a) r=(W_)(a)
256 #define word2Intzh(r,a) r=(I_)(a)
258 /* -----------------------------------------------------------------------------
260 -------------------------------------------------------------------------- */
262 #define int2Addrzh(r,a) r=(A_)(a)
263 #define addr2Intzh(r,a) r=(I_)(a)
265 #define readCharOffAddrzh(r,a,i) r= ((unsigned char *)(a))[i]
266 /* unsigned char is for compatibility: the index is still in bytes. */
267 #define readIntOffAddrzh(r,a,i) r= ((I_ *)(a))[i]
268 #define readWordOffAddrzh(r,a,i) r= ((W_ *)(a))[i]
269 #define readAddrOffAddrzh(r,a,i) r= ((PP_)(a))[i]
270 #define readFloatOffAddrzh(r,a,i) r= PK_FLT((P_) (((StgFloat *)(a)) + i))
271 #define readDoubleOffAddrzh(r,a,i) r= PK_DBL((P_) (((StgDouble *)(a)) + i))
272 #define readStablePtrOffAddrzh(r,a,i) r= ((StgStablePtr *)(a))[i]
273 #ifdef SUPPORT_LONG_LONGS
274 #define readInt64OffAddrzh(r,a,i) r= ((LI_ *)(a))[i]
275 #define readWord64OffAddrzh(r,a,i) r= ((LW_ *)(a))[i]
278 #define writeCharOffAddrzh(a,i,v) ((unsigned char *)(a))[i] = (unsigned char)(v)
279 /* unsigned char is for compatibility: the index is still in bytes. */
280 #define writeIntOffAddrzh(a,i,v) ((I_ *)(a))[i] = (v)
281 #define writeWordOffAddrzh(a,i,v) ((W_ *)(a))[i] = (v)
282 #define writeAddrOffAddrzh(a,i,v) ((PP_)(a))[i] = (v)
283 #define writeForeignObjOffAddrzh(a,i,v) ((PP_)(a))[i] = ForeignObj_CLOSURE_DATA(v)
284 #define writeFloatOffAddrzh(a,i,v) ASSIGN_FLT((P_) (((StgFloat *)(a)) + i),v)
285 #define writeDoubleOffAddrzh(a,i,v) ASSIGN_DBL((P_) (((StgDouble *)(a)) + i),v)
286 #define writeStablePtrOffAddrzh(a,i,v) ((StgStablePtr *)(a))[i] = (v)
287 #ifdef SUPPORT_LONG_LONGS
288 #define writeInt64OffAddrzh(a,i,v) ((LI_ *)(a))[i] = (v)
289 #define writeWord64OffAddrzh(a,i,v) ((LW_ *)(a))[i] = (v)
292 #define indexCharOffAddrzh(r,a,i) r= ((unsigned char *)(a))[i]
293 /* unsigned char is for compatibility: the index is still in bytes. */
294 #define indexIntOffAddrzh(r,a,i) r= ((I_ *)(a))[i]
295 #define indexWordOffAddrzh(r,a,i) r= ((W_ *)(a))[i]
296 #define indexAddrOffAddrzh(r,a,i) r= ((PP_)(a))[i]
297 #define indexFloatOffAddrzh(r,a,i) r= PK_FLT((P_) (((StgFloat *)(a)) + i))
298 #define indexDoubleOffAddrzh(r,a,i) r= PK_DBL((P_) (((StgDouble *)(a)) + i))
299 #define indexStablePtrOffAddrzh(r,a,i) r= ((StgStablePtr *)(a))[i]
300 #ifdef SUPPORT_LONG_LONGS
301 #define indexInt64OffAddrzh(r,a,i) r= ((LI_ *)(a))[i]
302 #define indexWord64OffAddrzh(r,a,i) r= ((LW_ *)(a))[i]
305 /* -----------------------------------------------------------------------------
307 -------------------------------------------------------------------------- */
309 #define plusFloatzh(r,a,b) r=(a)+(b)
310 #define minusFloatzh(r,a,b) r=(a)-(b)
311 #define timesFloatzh(r,a,b) r=(a)*(b)
312 #define divideFloatzh(r,a,b) r=(a)/(b)
313 #define negateFloatzh(r,a) r=-(a)
315 #define int2Floatzh(r,a) r=(StgFloat)(a)
316 #define float2Intzh(r,a) r=(I_)(a)
318 #define expFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,exp,a)
319 #define logFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,log,a)
320 #define sqrtFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sqrt,a)
321 #define sinFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sin,a)
322 #define cosFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,cos,a)
323 #define tanFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,tan,a)
324 #define asinFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,asin,a)
325 #define acosFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,acos,a)
326 #define atanFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,atan,a)
327 #define sinhFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sinh,a)
328 #define coshFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,cosh,a)
329 #define tanhFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,tanh,a)
330 #define powerFloatzh(r,a,b) r=(StgFloat) RET_PRIM_STGCALL2(StgDouble,pow,a,b)
332 /* -----------------------------------------------------------------------------
334 -------------------------------------------------------------------------- */
336 #define zpzhzh(r,a,b) r=(a)+(b)
337 #define zmzhzh(r,a,b) r=(a)-(b)
338 #define ztzhzh(r,a,b) r=(a)*(b)
339 #define zszhzh(r,a,b) r=(a)/(b)
340 #define negateDoublezh(r,a) r=-(a)
342 #define int2Doublezh(r,a) r=(StgDouble)(a)
343 #define double2Intzh(r,a) r=(I_)(a)
345 #define float2Doublezh(r,a) r=(StgDouble)(a)
346 #define double2Floatzh(r,a) r=(StgFloat)(a)
348 #define expDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,exp,a)
349 #define logDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,log,a)
350 #define sqrtDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sqrt,a)
351 #define sinDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sin,a)
352 #define cosDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,cos,a)
353 #define tanDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,tan,a)
354 #define asinDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,asin,a)
355 #define acosDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,acos,a)
356 #define atanDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,atan,a)
357 #define sinhDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sinh,a)
358 #define coshDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,cosh,a)
359 #define tanhDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,tanh,a)
361 #define ztztzhzh(r,a,b) r=(StgDouble) RET_PRIM_STGCALL2(StgDouble,pow,a,b)
363 /* -----------------------------------------------------------------------------
365 -------------------------------------------------------------------------- */
367 /* We can do integer2Int and cmpInteger inline, since they don't need
368 * to allocate any memory.
370 * integer2Int# is now modular.
373 #define integer2Intzh(r, sa,da) \
374 { StgWord word0 = ((StgWord *)BYTE_ARR_CTS(da))[0]; \
380 ( size < 0 && word0 != 0x8000000 ) ? \
385 #define integer2Wordzh(r, sa,da) \
386 { StgWord word0 = ((StgWord *)BYTE_ARR_CTS(da))[0]; \
388 (r) = ( size == 0 ) ? 0 : word0 ; \
391 #define cmpIntegerzh(r, s1,d1, s2,d2) \
395 arg1._mp_size = (s1); \
396 arg1._mp_alloc= ((StgArrWords *)d1)->words; \
397 arg1._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d1)); \
398 arg2._mp_size = (s2); \
399 arg2._mp_alloc= ((StgArrWords *)d2)->words; \
400 arg2._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d2)); \
402 (r) = RET_PRIM_STGCALL2(I_,mpz_cmp,&arg1,&arg2); \
405 #define cmpIntegerIntzh(r, s,d, i) \
408 arg._mp_size = (s); \
409 arg._mp_alloc = ((StgArrWords *)d)->words; \
410 arg._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d)); \
412 (r) = RET_PRIM_STGCALL2(I_,mpz_cmp_si,&arg,i); \
415 /* NOTE: gcdIntzh and gcdIntegerIntzh work only for positive inputs! */
417 /* mp_limb_t must be able to hold an StgInt for this to work properly */
418 #define gcdIntzh(r,a,b) \
419 { mp_limb_t aa = (mp_limb_t)(a); \
420 r = RET_STGCALL3(StgInt, mpn_gcd_1, (mp_limb_t *)(&aa), 1, (mp_limb_t)(b)); \
423 #define gcdIntegerIntzh(r,sa,a,b) \
424 r = RET_STGCALL3(StgInt, mpn_gcd_1, (mp_limb_t *)(BYTE_ARR_CTS(a)), sa, b)
426 /* The rest are all out-of-line: -------- */
428 /* Integer arithmetic */
429 EXTFUN_RTS(plusIntegerzh_fast);
430 EXTFUN_RTS(minusIntegerzh_fast);
431 EXTFUN_RTS(timesIntegerzh_fast);
432 EXTFUN_RTS(gcdIntegerzh_fast);
433 EXTFUN_RTS(quotRemIntegerzh_fast);
434 EXTFUN_RTS(quotIntegerzh_fast);
435 EXTFUN_RTS(remIntegerzh_fast);
436 EXTFUN_RTS(divExactIntegerzh_fast);
437 EXTFUN_RTS(divModIntegerzh_fast);
440 EXTFUN_RTS(int2Integerzh_fast);
441 EXTFUN_RTS(word2Integerzh_fast);
443 /* Floating-point decodings */
444 EXTFUN_RTS(decodeFloatzh_fast);
445 EXTFUN_RTS(decodeDoublezh_fast);
447 /* -----------------------------------------------------------------------------
449 -------------------------------------------------------------------------- */
451 #ifdef SUPPORT_LONG_LONGS
453 #define integerToWord64zh(r, sa,da) \
454 { unsigned long int* d; \
458 d = (unsigned long int *) (BYTE_ARR_CTS(da)); \
462 } else if ( s == 1) { \
465 res = (LW_)d[0] + (LW_)d[1] * 0x100000000ULL; \
470 #define integerToInt64zh(r, sa,da) \
471 { unsigned long int* d; \
475 d = (unsigned long int *) (BYTE_ARR_CTS(da)); \
479 } else if ( s == 1) { \
482 res = (LI_)d[0] + (LI_)d[1] * 0x100000000LL; \
491 EXTFUN_RTS(int64ToIntegerzh_fast);
492 EXTFUN_RTS(word64ToIntegerzh_fast);
494 /* The rest are (way!) out of line, implemented via C entry points.
496 I_ stg_gtWord64 (StgWord64, StgWord64);
497 I_ stg_geWord64 (StgWord64, StgWord64);
498 I_ stg_eqWord64 (StgWord64, StgWord64);
499 I_ stg_neWord64 (StgWord64, StgWord64);
500 I_ stg_ltWord64 (StgWord64, StgWord64);
501 I_ stg_leWord64 (StgWord64, StgWord64);
503 I_ stg_gtInt64 (StgInt64, StgInt64);
504 I_ stg_geInt64 (StgInt64, StgInt64);
505 I_ stg_eqInt64 (StgInt64, StgInt64);
506 I_ stg_neInt64 (StgInt64, StgInt64);
507 I_ stg_ltInt64 (StgInt64, StgInt64);
508 I_ stg_leInt64 (StgInt64, StgInt64);
510 LW_ stg_remWord64 (StgWord64, StgWord64);
511 LW_ stg_quotWord64 (StgWord64, StgWord64);
513 LI_ stg_remInt64 (StgInt64, StgInt64);
514 LI_ stg_quotInt64 (StgInt64, StgInt64);
515 LI_ stg_negateInt64 (StgInt64);
516 LI_ stg_plusInt64 (StgInt64, StgInt64);
517 LI_ stg_minusInt64 (StgInt64, StgInt64);
518 LI_ stg_timesInt64 (StgInt64, StgInt64);
520 LW_ stg_and64 (StgWord64, StgWord64);
521 LW_ stg_or64 (StgWord64, StgWord64);
522 LW_ stg_xor64 (StgWord64, StgWord64);
523 LW_ stg_not64 (StgWord64);
525 LW_ stg_shiftL64 (StgWord64, StgInt);
526 LW_ stg_shiftRL64 (StgWord64, StgInt);
527 LI_ stg_iShiftL64 (StgInt64, StgInt);
528 LI_ stg_iShiftRL64 (StgInt64, StgInt);
529 LI_ stg_iShiftRA64 (StgInt64, StgInt);
531 LI_ stg_intToInt64 (StgInt);
532 I_ stg_int64ToInt (StgInt64);
533 LW_ stg_int64ToWord64 (StgInt64);
535 LW_ stg_wordToWord64 (StgWord);
536 W_ stg_word64ToWord (StgWord64);
537 LI_ stg_word64ToInt64 (StgWord64);
540 /* -----------------------------------------------------------------------------
542 -------------------------------------------------------------------------- */
544 /* We cast to void* instead of StgChar* because this avoids a warning
545 * about increasing the alignment requirements.
547 #define REAL_BYTE_ARR_CTS(a) ((void *) (((StgArrWords *)(a))->payload))
548 #define REAL_PTRS_ARR_CTS(a) ((P_) (((StgMutArrPtrs *)(a))->payload))
551 #define BYTE_ARR_CTS(a) \
552 ({ ASSERT(GET_INFO((StgArrWords *)(a)) == &ARR_WORDS_info); \
553 REAL_BYTE_ARR_CTS(a); })
554 #define PTRS_ARR_CTS(a) \
555 ({ ASSERT((GET_INFO((StgMutArrPtrs *)(a)) == &MUT_ARR_PTRS_FROZEN_info) \
556 || (GET_INFO((StgMutArrPtrs *)(a)) == &MUT_ARR_PTRS_info)); \
557 REAL_PTRS_ARR_CTS(a); })
559 #define BYTE_ARR_CTS(a) REAL_BYTE_ARR_CTS(a)
560 #define PTRS_ARR_CTS(a) REAL_PTRS_ARR_CTS(a)
563 extern I_ genSymZh(void);
564 extern I_ resetGenSymZh(void);
566 /*--- everything except new*Array is done inline: */
568 #define sameMutableArrayzh(r,a,b) r=(I_)((a)==(b))
569 #define sameMutableByteArrayzh(r,a,b) r=(I_)((a)==(b))
571 #define readArrayzh(r,a,i) r=((PP_) PTRS_ARR_CTS(a))[(i)]
573 #define readCharArrayzh(r,a,i) indexCharOffAddrzh(r,BYTE_ARR_CTS(a),i)
574 #define readIntArrayzh(r,a,i) indexIntOffAddrzh(r,BYTE_ARR_CTS(a),i)
575 #define readWordArrayzh(r,a,i) indexWordOffAddrzh(r,BYTE_ARR_CTS(a),i)
576 #define readAddrArrayzh(r,a,i) indexAddrOffAddrzh(r,BYTE_ARR_CTS(a),i)
577 #define readFloatArrayzh(r,a,i) indexFloatOffAddrzh(r,BYTE_ARR_CTS(a),i)
578 #define readDoubleArrayzh(r,a,i) indexDoubleOffAddrzh(r,BYTE_ARR_CTS(a),i)
579 #define readStablePtrArrayzh(r,a,i) indexStablePtrOffAddrzh(r,BYTE_ARR_CTS(a),i)
580 #ifdef SUPPORT_LONG_LONGS
581 #define readInt64Arrayzh(r,a,i) indexInt64OffAddrzh(r,BYTE_ARR_CTS(a),i)
582 #define readWord64Arrayzh(r,a,i) indexWord64OffAddrzh(r,BYTE_ARR_CTS(a),i)
585 /* result ("r") arg ignored in write macros! */
586 #define writeArrayzh(a,i,v) ((PP_) PTRS_ARR_CTS(a))[(i)]=(v)
588 #define writeCharArrayzh(a,i,v) ((unsigned char *)(BYTE_ARR_CTS(a)))[i] = (unsigned char)(v)
589 /* unsigned char is for compatibility: the index is still in bytes. */
590 #define writeIntArrayzh(a,i,v) ((I_ *)(BYTE_ARR_CTS(a)))[i] = (v)
591 #define writeWordArrayzh(a,i,v) ((W_ *)(BYTE_ARR_CTS(a)))[i] = (v)
592 #define writeAddrArrayzh(a,i,v) ((PP_)(BYTE_ARR_CTS(a)))[i] = (v)
593 #define writeFloatArrayzh(a,i,v) \
594 ASSIGN_FLT((P_) (((StgFloat *)(BYTE_ARR_CTS(a))) + i),v)
595 #define writeDoubleArrayzh(a,i,v) \
596 ASSIGN_DBL((P_) (((StgDouble *)(BYTE_ARR_CTS(a))) + i),v)
597 #define writeStablePtrArrayzh(a,i,v) ((StgStablePtr *)(BYTE_ARR_CTS(a)))[i] = (v)
598 #ifdef SUPPORT_LONG_LONGS
599 #define writeInt64Arrayzh(a,i,v) ((LI_ *)(BYTE_ARR_CTS(a)))[i] = (v)
600 #define writeWord64Arrayzh(a,i,v) ((LW_ *)(BYTE_ARR_CTS(a)))[i] = (v)
603 #define indexArrayzh(r,a,i) r=((PP_) PTRS_ARR_CTS(a))[(i)]
605 #define indexCharArrayzh(r,a,i) indexCharOffAddrzh(r,BYTE_ARR_CTS(a),i)
606 #define indexIntArrayzh(r,a,i) indexIntOffAddrzh(r,BYTE_ARR_CTS(a),i)
607 #define indexWordArrayzh(r,a,i) indexWordOffAddrzh(r,BYTE_ARR_CTS(a),i)
608 #define indexAddrArrayzh(r,a,i) indexAddrOffAddrzh(r,BYTE_ARR_CTS(a),i)
609 #define indexFloatArrayzh(r,a,i) indexFloatOffAddrzh(r,BYTE_ARR_CTS(a),i)
610 #define indexDoubleArrayzh(r,a,i) indexDoubleOffAddrzh(r,BYTE_ARR_CTS(a),i)
611 #define indexStablePtrArrayzh(r,a,i) indexStablePtrOffAddrzh(r,BYTE_ARR_CTS(a),i)
612 #ifdef SUPPORT_LONG_LONGS
613 #define indexInt64Arrayzh(r,a,i) indexInt64OffAddrzh(r,BYTE_ARR_CTS(a),i)
614 #define indexWord64Arrayzh(r,a,i) indexWord64OffAddrzh(r,BYTE_ARR_CTS(a),i)
617 /* Freezing arrays-of-ptrs requires changing an info table, for the
618 benefit of the generational collector. It needs to scavenge mutable
619 objects, even if they are in old space. When they become immutable,
620 they can be removed from this scavenge list. */
622 #define unsafeFreezzeArrayzh(r,a) \
624 SET_INFO((StgClosure *)a,&MUT_ARR_PTRS_FROZEN_info); \
628 #define unsafeFreezzeByteArrayzh(r,a) r=(a)
630 EXTFUN_RTS(unsafeThawArrayzh_fast);
632 #define sizzeofByteArrayzh(r,a) \
633 r = (((StgArrWords *)(a))->words * sizeof(W_))
634 #define sizzeofMutableByteArrayzh(r,a) \
635 r = (((StgArrWords *)(a))->words * sizeof(W_))
637 /* and the out-of-line ones... */
639 EXTFUN_RTS(newCharArrayzh_fast);
640 EXTFUN_RTS(newIntArrayzh_fast);
641 EXTFUN_RTS(newWordArrayzh_fast);
642 EXTFUN_RTS(newAddrArrayzh_fast);
643 EXTFUN_RTS(newFloatArrayzh_fast);
644 EXTFUN_RTS(newDoubleArrayzh_fast);
645 EXTFUN_RTS(newStablePtrArrayzh_fast);
646 EXTFUN_RTS(newArrayzh_fast);
648 /* encoding and decoding of floats/doubles. */
650 /* We only support IEEE floating point format */
651 #include "ieee-flpt.h"
653 /* The decode operations are out-of-line because they need to allocate
656 #ifdef FLOATS_AS_DOUBLES
657 #define decodeFloatzh_fast decodeDoublezh_fast
659 EXTFUN_RTS(decodeFloatzh_fast);
662 EXTFUN_RTS(decodeDoublezh_fast);
664 /* grimy low-level support functions defined in StgPrimFloat.c */
666 extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
667 extern StgDouble __int_encodeDouble (I_ j, I_ e);
668 #ifndef FLOATS_AS_DOUBLES
669 extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
670 extern StgFloat __int_encodeFloat (I_ j, I_ e);
672 extern void __decodeDouble (MP_INT *man, I_ *_exp, StgDouble dbl);
673 extern void __decodeFloat (MP_INT *man, I_ *_exp, StgFloat flt);
674 extern StgInt isDoubleNaN(StgDouble d);
675 extern StgInt isDoubleInfinite(StgDouble d);
676 extern StgInt isDoubleDenormalized(StgDouble d);
677 extern StgInt isDoubleNegativeZero(StgDouble d);
678 extern StgInt isFloatNaN(StgFloat f);
679 extern StgInt isFloatInfinite(StgFloat f);
680 extern StgInt isFloatDenormalized(StgFloat f);
681 extern StgInt isFloatNegativeZero(StgFloat f);
683 /* -----------------------------------------------------------------------------
686 newMutVar is out of line.
687 -------------------------------------------------------------------------- */
689 EXTFUN_RTS(newMutVarzh_fast);
691 #define readMutVarzh(r,a) r=(P_)(((StgMutVar *)(a))->var)
692 #define writeMutVarzh(a,v) (P_)(((StgMutVar *)(a))->var)=(v)
693 #define sameMutVarzh(r,a,b) r=(I_)((a)==(b))
695 /* -----------------------------------------------------------------------------
698 All out of line, because they either allocate or may block.
699 -------------------------------------------------------------------------- */
700 #define sameMVarzh(r,a,b) r=(I_)((a)==(b))
702 /* Assume external decl of EMPTY_MVAR_info is in scope by now */
703 #define isEmptyMVarzh(r,a) r=(I_)((GET_INFO((StgMVar*)(a))) == &EMPTY_MVAR_info )
704 EXTFUN_RTS(newMVarzh_fast);
705 EXTFUN_RTS(takeMVarzh_fast);
706 EXTFUN_RTS(tryTakeMVarzh_fast);
707 EXTFUN_RTS(putMVarzh_fast);
710 /* -----------------------------------------------------------------------------
712 -------------------------------------------------------------------------- */
714 EXTFUN_RTS(waitReadzh_fast);
715 EXTFUN_RTS(waitWritezh_fast);
716 EXTFUN_RTS(delayzh_fast);
718 /* -----------------------------------------------------------------------------
719 Primitive I/O, error-handling PrimOps
720 -------------------------------------------------------------------------- */
722 EXTFUN_RTS(catchzh_fast);
723 EXTFUN_RTS(raisezh_fast);
725 extern void stg_exit(I_ n) __attribute__ ((noreturn));
727 /* -----------------------------------------------------------------------------
728 Stable Name / Stable Pointer PrimOps
729 -------------------------------------------------------------------------- */
733 EXTFUN_RTS(makeStableNamezh_fast);
735 #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
737 #define eqStableNamezh(r,sn1,sn2) \
738 (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
740 #define makeStablePtrzh(r,a) \
741 r = RET_STGCALL1(StgStablePtr,getStablePtr,a)
743 #define deRefStablePtrzh(r,sp) do { \
744 ASSERT(stable_ptr_table[stgCast(StgWord,sp) & ~STABLEPTR_WEIGHT_MASK].weight > 0); \
745 r = stable_ptr_table[stgCast(StgWord,sp) & ~STABLEPTR_WEIGHT_MASK].addr; \
748 #define eqStablePtrzh(r,sp1,sp2) \
749 (r = ((stgCast(StgWord,sp1) & ~STABLEPTR_WEIGHT_MASK) == (stgCast(StgWord,sp2) & ~STABLEPTR_WEIGHT_MASK)))
753 /* -----------------------------------------------------------------------------
754 Concurrency/Exception PrimOps.
755 -------------------------------------------------------------------------- */
757 EXTFUN_RTS(forkzh_fast);
758 EXTFUN_RTS(yieldzh_fast);
759 EXTFUN_RTS(killThreadzh_fast);
760 EXTFUN_RTS(seqzh_fast);
761 EXTFUN_RTS(blockAsyncExceptionszh_fast);
762 EXTFUN_RTS(unblockAsyncExceptionszh_fast);
764 #define myThreadIdzh(t) (t = CurrentTSO)
766 extern int cmp_thread(const StgTSO *tso1, const StgTSO *tso2);
768 /* ------------------------------------------------------------------------
771 A par in the Haskell code is ultimately translated to a parzh macro
772 (with a case wrapped around it to guarantee that the macro is actually
773 executed; see compiler/prelude/PrimOps.lhs)
774 In GUM and SMP we only add a pointer to the spark pool.
775 In GranSim we call an RTS fct, forwarding additional parameters which
776 supply info on granularity of the computation, size of the result value
777 and the degree of parallelism in the sparked expression.
778 ---------------------------------------------------------------------- */
782 #define parzh(r,node) PAR(r,node,1,0,0,0,0,0)
785 #define parAtzh(r,node,where,identifier,gran_info,size_info,par_info,rest) \
786 parAT(r,node,where,identifier,gran_info,size_info,par_info,rest,1)
789 #define parAtAbszh(r,node,proc,identifier,gran_info,size_info,par_info,rest) \
790 parAT(r,node,proc,identifier,gran_info,size_info,par_info,rest,2)
793 #define parAtRelzh(r,node,proc,identifier,gran_info,size_info,par_info,rest) \
794 parAT(r,node,proc,identifier,gran_info,size_info,par_info,rest,3)
796 //@cindex _parAtForNow_
797 #define parAtForNowzh(r,node,where,identifier,gran_info,size_info,par_info,rest) \
798 parAT(r,node,where,identifier,gran_info,size_info,par_info,rest,0)
800 #define parAT(r,node,where,identifier,gran_info,size_info,par_info,rest,local) \
802 if (closure_SHOULD_SPARK((StgClosure*)node)) { \
806 STGCALL6(newSpark, node,identifier,gran_info,size_info,par_info,local); \
808 case 2: p = where; /* parAtAbs means absolute PE no. expected */ \
810 case 3: p = CurrentProc+where; /* parAtRel means rel PE no. expected */\
812 default: p = where_is(where); /* parAt means closure expected */ \
815 /* update GranSim state according to this spark */ \
816 STGCALL3(GranSimSparkAtAbs, result, (I_)p, identifier); \
821 #define parLocalzh(r,node,identifier,gran_info,size_info,par_info,rest) \
822 PAR(r,node,rest,identifier,gran_info,size_info,par_info,1)
824 //@cindex _parGlobal_
825 #define parGlobalzh(r,node,identifier,gran_info,size_info,par_info,rest) \
826 PAR(r,node,rest,identifier,gran_info,size_info,par_info,0)
828 #define PAR(r,node,rest,identifier,gran_info,size_info,par_info,local) \
830 if (closure_SHOULD_SPARK((StgClosure*)node)) { \
832 result = RET_STGCALL6(rtsSpark*, newSpark, \
833 node,identifier,gran_info,size_info,par_info,local);\
834 STGCALL1(add_to_spark_queue,result); \
835 STGCALL2(GranSimSpark, local,(P_)node); \
839 #define copyablezh(r,node) \
840 /* copyable not yet implemented!! */
842 #define noFollowzh(r,node) \
843 /* noFollow not yet implemented!! */
845 #elif defined(SMP) || defined(PAR)
847 #define parzh(r,node) \
849 extern unsigned int context_switch; \
850 if (closure_SHOULD_SPARK((StgClosure *)node) && \
851 SparkTl < SparkLim) { \
852 *SparkTl++ = (StgClosure *)(node); \
854 r = context_switch = 1; \
856 #else /* !GRAN && !SMP && !PAR */
857 #define parzh(r,node) r = 1
860 /* -----------------------------------------------------------------------------
862 -------------------------------------------------------------------------- */
864 /* warning: extremely non-referentially transparent, need to hide in
865 an appropriate monad.
867 ToDo: follow indirections.
870 #define reallyUnsafePtrEqualityzh(r,a,b) r=((StgPtr)(a) == (StgPtr)(b))
872 /* -----------------------------------------------------------------------------
873 Weak Pointer PrimOps.
874 -------------------------------------------------------------------------- */
878 EXTFUN_RTS(mkWeakzh_fast);
879 EXTFUN_RTS(finalizzeWeakzh_fast);
881 #define deRefWeakzh(code,val,w) \
882 if (((StgWeak *)w)->header.info == &WEAK_info) { \
884 val = (P_)((StgWeak *)w)->value; \
890 #define sameWeakzh(w1,w2) ((w1)==(w2))
894 /* -----------------------------------------------------------------------------
895 Foreign Object PrimOps.
896 -------------------------------------------------------------------------- */
900 #define ForeignObj_CLOSURE_DATA(c) (((StgForeignObj *)c)->data)
902 #define foreignObjToAddrzh(r,fo) r=ForeignObj_CLOSURE_DATA(fo)
903 #define touchzh(o) /* nothing */
905 EXTFUN_RTS(mkForeignObjzh_fast);
907 #define writeForeignObjzh(res,datum) \
908 (ForeignObj_CLOSURE_DATA(res) = (P_)(datum))
910 #define eqForeignObj(f1,f2) ((f1)==(f2))
912 #define indexCharOffForeignObjzh(r,fo,i) indexCharOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
913 #define indexIntOffForeignObjzh(r,fo,i) indexIntOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
914 #define indexWordOffForeignObjzh(r,fo,i) indexWordOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
915 #define indexAddrOffForeignObjzh(r,fo,i) indexAddrOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
916 #define indexFloatOffForeignObjzh(r,fo,i) indexFloatOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
917 #define indexDoubleOffForeignObjzh(r,fo,i) indexDoubleOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
918 #define indexStablePtrOffForeignObjzh(r,fo,i) indexStablePtrOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
919 #ifdef SUPPORT_LONG_LONGS
920 #define indexInt64OffForeignObjzh(r,fo,i) indexInt64OffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
921 #define indexWord64OffForeignObjzh(r,fo,i) indexWord64OffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
927 /* -----------------------------------------------------------------------------
929 -------------------------------------------------------------------------- */
932 #define dataToTagzh(r,a) \
933 do { StgClosure* tmp = (StgClosure*)(a); \
934 CHASE_INDIRECTIONS(tmp); \
935 r = (GET_TAG(((StgClosure *)tmp)->header.info)); \
938 /* Original version doesn't chase indirections. */
939 #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
942 /* tagToEnum# is handled directly by the code generator. */
944 /* -----------------------------------------------------------------------------
945 Signal processing. Not really primops, but called directly from
947 -------------------------------------------------------------------------- */
949 #define STG_SIG_DFL (-1)
950 #define STG_SIG_IGN (-2)
951 #define STG_SIG_ERR (-3)
952 #define STG_SIG_HAN (-4)
954 extern StgInt sig_install (StgInt, StgInt, StgStablePtr, sigset_t *);
955 #define stg_sig_default(sig,mask) sig_install(sig,STG_SIG_DFL,0,(sigset_t *)mask)
956 #define stg_sig_ignore(sig,mask) sig_install(sig,STG_SIG_IGN,0,(sigset_t *)mask)
957 #define stg_sig_catch(sig,ptr,mask) sig_install(sig,STG_SIG_HAN,ptr,(sigset_t *)mask)
959 #endif /* PRIMOPS_H */