1 /* -----------------------------------------------------------------------------
2 * $Id: PrimOps.h,v 1.65 2000/11/07 10:42:56 simonmar 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); \
46 /* -----------------------------------------------------------------------------
48 -------------------------------------------------------------------------- */
50 #define gtCharzh(r,a,b) r=(I_)((a)> (b))
51 #define geCharzh(r,a,b) r=(I_)((a)>=(b))
52 #define eqCharzh(r,a,b) r=(I_)((a)==(b))
53 #define neCharzh(r,a,b) r=(I_)((a)!=(b))
54 #define ltCharzh(r,a,b) r=(I_)((a)< (b))
55 #define leCharzh(r,a,b) r=(I_)((a)<=(b))
57 /* Int comparisons: >#, >=# etc */
58 #define zgzh(r,a,b) r=(I_)((I_)(a) >(I_)(b))
59 #define zgzezh(r,a,b) r=(I_)((I_)(a)>=(I_)(b))
60 #define zezezh(r,a,b) r=(I_)((I_)(a)==(I_)(b))
61 #define zszezh(r,a,b) r=(I_)((I_)(a)!=(I_)(b))
62 #define zlzh(r,a,b) r=(I_)((I_)(a) <(I_)(b))
63 #define zlzezh(r,a,b) r=(I_)((I_)(a)<=(I_)(b))
65 #define gtWordzh(r,a,b) r=(I_)((W_)(a) >(W_)(b))
66 #define geWordzh(r,a,b) r=(I_)((W_)(a)>=(W_)(b))
67 #define eqWordzh(r,a,b) r=(I_)((W_)(a)==(W_)(b))
68 #define neWordzh(r,a,b) r=(I_)((W_)(a)!=(W_)(b))
69 #define ltWordzh(r,a,b) r=(I_)((W_)(a) <(W_)(b))
70 #define leWordzh(r,a,b) r=(I_)((W_)(a)<=(W_)(b))
72 #define gtAddrzh(r,a,b) r=(I_)((a) >(b))
73 #define geAddrzh(r,a,b) r=(I_)((a)>=(b))
74 #define eqAddrzh(r,a,b) r=(I_)((a)==(b))
75 #define neAddrzh(r,a,b) r=(I_)((a)!=(b))
76 #define ltAddrzh(r,a,b) r=(I_)((a) <(b))
77 #define leAddrzh(r,a,b) r=(I_)((a)<=(b))
79 #define gtFloatzh(r,a,b) r=(I_)((a)> (b))
80 #define geFloatzh(r,a,b) r=(I_)((a)>=(b))
81 #define eqFloatzh(r,a,b) r=(I_)((a)==(b))
82 #define neFloatzh(r,a,b) r=(I_)((a)!=(b))
83 #define ltFloatzh(r,a,b) r=(I_)((a)< (b))
84 #define leFloatzh(r,a,b) r=(I_)((a)<=(b))
86 /* Double comparisons: >##, >=#@ etc */
87 #define zgzhzh(r,a,b) r=(I_)((a) >(b))
88 #define zgzezhzh(r,a,b) r=(I_)((a)>=(b))
89 #define zezezhzh(r,a,b) r=(I_)((a)==(b))
90 #define zszezhzh(r,a,b) r=(I_)((a)!=(b))
91 #define zlzhzh(r,a,b) r=(I_)((a) <(b))
92 #define zlzezhzh(r,a,b) r=(I_)((a)<=(b))
94 /* -----------------------------------------------------------------------------
96 -------------------------------------------------------------------------- */
98 #define ordzh(r,a) r=(I_)((W_) (a))
99 #define chrzh(r,a) r=(StgChar)((W_)(a))
101 /* -----------------------------------------------------------------------------
103 -------------------------------------------------------------------------- */
105 I_ stg_div (I_ a, I_ b);
107 #define zpzh(r,a,b) r=(a)+(b)
108 #define zmzh(r,a,b) r=(a)-(b)
109 #define ztzh(r,a,b) r=(a)*(b)
110 #define quotIntzh(r,a,b) r=(a)/(b)
111 #define zszh(r,a,b) r=ULTRASAFESTGCALL2(I_,(void *, I_, I_),stg_div,(a),(b))
112 #define remIntzh(r,a,b) r=(a)%(b)
113 #define negateIntzh(r,a) r=-(a)
115 /* -----------------------------------------------------------------------------
116 * Int operations with carry.
117 * -------------------------------------------------------------------------- */
119 /* With some bit-twiddling, we can define int{Add,Sub}Czh portably in
120 * C, and without needing any comparisons. This may not be the
121 * fastest way to do it - if you have better code, please send it! --SDM
123 * Return : r = a + b, c = 0 if no overflow, 1 on overflow.
125 * We currently don't make use of the r value if c is != 0 (i.e.
126 * overflow), we just convert to big integers and try again. This
127 * could be improved by making r and c the correct values for
128 * plugging into a new J#.
130 #define addIntCzh(r,c,a,b) \
132 c = ((StgWord)(~(a^b) & (a^r))) \
133 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
137 #define subIntCzh(r,c,a,b) \
139 c = ((StgWord)((a^b) & (a^r))) \
140 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
143 /* Multiply with overflow checking.
145 * This is slightly more tricky - the usual sign rules for add/subtract
148 * On x86 hardware we use a hand-crafted assembly fragment to do the job.
150 * On other 32-bit machines we use gcc's 'long long' types, finding
151 * overflow with some careful bit-twiddling.
153 * On 64-bit machines where gcc's 'long long' type is also 64-bits,
154 * we use a crude approximation, testing whether either operand is
155 * larger than 32-bits; if neither is, then we go ahead with the
161 #define mulIntCzh(r,c,a,b) \
163 __asm__("xorl %1,%1\n\t \
168 : "=r" (r), "=&r" (c) : "r" (a), "0" (b)); \
171 #elif SIZEOF_VOID_P == 4
173 #ifdef WORDS_BIGENDIAN
186 #define mulIntCzh(r,c,a,b) \
189 z.l = (StgInt64)a * (StgInt64)b; \
192 if (c == 0 || c == -1) { \
193 c = ((StgWord)((a^b) ^ r)) \
194 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
197 /* Careful: the carry calculation above is extremely delicate. Make sure
198 * you test it thoroughly after changing it.
203 #define HALF_INT (1 << (BITS_PER_BYTE * sizeof(I_) / 2))
205 #define stg_abs(a) ((a) < 0 ? -(a) : (a))
207 #define mulIntCzh(r,c,a,b) \
209 if (stg_abs(a) >= HALF_INT \
210 stg_abs(b) >= HALF_INT) { \
219 /* -----------------------------------------------------------------------------
221 -------------------------------------------------------------------------- */
223 #define quotWordzh(r,a,b) r=((W_)a)/((W_)b)
224 #define remWordzh(r,a,b) r=((W_)a)%((W_)b)
226 #define andzh(r,a,b) r=(a)&(b)
227 #define orzh(r,a,b) r=(a)|(b)
228 #define xorzh(r,a,b) r=(a)^(b)
229 #define notzh(r,a) r=~(a)
231 /* The extra tests below properly define the behaviour when shifting
232 * by offsets larger than the width of the value being shifted. Doing
233 * so is undefined in C (and in fact gives different answers depending
234 * on whether the operation is constant folded or not with gcc on x86!)
237 #define shiftLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)<<(b)
238 #define shiftRLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)>>(b)
239 #define iShiftLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)<<(b)
240 /* Right shifting of signed quantities is not portable in C, so
241 the behaviour you'll get from using these primops depends
242 on the whatever your C compiler is doing. ToDo: fix/document. -- sof 8/98
244 #define iShiftRAzh(r,a,b) r=((b) >= BITS_IN(I_)) ? (((a) < 0) ? -1 : 0) : (a)>>(b)
245 #define iShiftRLzh(r,a,b) r=((b) >= BITS_IN(I_)) ? 0 : ((W_)(a))>>(b)
247 #define int2Wordzh(r,a) r=(W_)(a)
248 #define word2Intzh(r,a) r=(I_)(a)
250 /* -----------------------------------------------------------------------------
252 -------------------------------------------------------------------------- */
254 #define int2Addrzh(r,a) r=(A_)(a)
255 #define addr2Intzh(r,a) r=(I_)(a)
257 #define readCharOffAddrzh(r,a,i) r= ((unsigned char *)(a))[i]
258 /* unsigned char is for compatibility: the index is still in bytes. */
259 #define readIntOffAddrzh(r,a,i) r= ((I_ *)(a))[i]
260 #define readWordOffAddrzh(r,a,i) r= ((W_ *)(a))[i]
261 #define readAddrOffAddrzh(r,a,i) r= ((PP_)(a))[i]
262 #define readFloatOffAddrzh(r,a,i) r= PK_FLT((P_) (((StgFloat *)(a)) + i))
263 #define readDoubleOffAddrzh(r,a,i) r= PK_DBL((P_) (((StgDouble *)(a)) + i))
264 #define readStablePtrOffAddrzh(r,a,i) r= ((StgStablePtr *)(a))[i]
265 #ifdef SUPPORT_LONG_LONGS
266 #define readInt64OffAddrzh(r,a,i) r= ((LI_ *)(a))[i]
267 #define readWord64OffAddrzh(r,a,i) r= ((LW_ *)(a))[i]
270 #define writeCharOffAddrzh(a,i,v) ((unsigned char *)(a))[i] = (unsigned char)(v)
271 /* unsigned char is for compatibility: the index is still in bytes. */
272 #define writeIntOffAddrzh(a,i,v) ((I_ *)(a))[i] = (v)
273 #define writeWordOffAddrzh(a,i,v) ((W_ *)(a))[i] = (v)
274 #define writeAddrOffAddrzh(a,i,v) ((PP_)(a))[i] = (v)
275 #define writeForeignObjOffAddrzh(a,i,v) ((PP_)(a))[i] = ForeignObj_CLOSURE_DATA(v)
276 #define writeFloatOffAddrzh(a,i,v) ASSIGN_FLT((P_) (((StgFloat *)(a)) + i),v)
277 #define writeDoubleOffAddrzh(a,i,v) ASSIGN_DBL((P_) (((StgDouble *)(a)) + i),v)
278 #define writeStablePtrOffAddrzh(a,i,v) ((StgStablePtr *)(a))[i] = (v)
279 #ifdef SUPPORT_LONG_LONGS
280 #define writeInt64OffAddrzh(a,i,v) ((LI_ *)(a))[i] = (v)
281 #define writeWord64OffAddrzh(a,i,v) ((LW_ *)(a))[i] = (v)
284 #define indexCharOffAddrzh(r,a,i) r= ((unsigned char *)(a))[i]
285 /* unsigned char is for compatibility: the index is still in bytes. */
286 #define indexIntOffAddrzh(r,a,i) r= ((I_ *)(a))[i]
287 #define indexWordOffAddrzh(r,a,i) r= ((W_ *)(a))[i]
288 #define indexAddrOffAddrzh(r,a,i) r= ((PP_)(a))[i]
289 #define indexFloatOffAddrzh(r,a,i) r= PK_FLT((P_) (((StgFloat *)(a)) + i))
290 #define indexDoubleOffAddrzh(r,a,i) r= PK_DBL((P_) (((StgDouble *)(a)) + i))
291 #define indexStablePtrOffAddrzh(r,a,i) r= ((StgStablePtr *)(a))[i]
292 #ifdef SUPPORT_LONG_LONGS
293 #define indexInt64OffAddrzh(r,a,i) r= ((LI_ *)(a))[i]
294 #define indexWord64OffAddrzh(r,a,i) r= ((LW_ *)(a))[i]
297 /* -----------------------------------------------------------------------------
299 -------------------------------------------------------------------------- */
301 #define plusFloatzh(r,a,b) r=(a)+(b)
302 #define minusFloatzh(r,a,b) r=(a)-(b)
303 #define timesFloatzh(r,a,b) r=(a)*(b)
304 #define divideFloatzh(r,a,b) r=(a)/(b)
305 #define negateFloatzh(r,a) r=-(a)
307 #define int2Floatzh(r,a) r=(StgFloat)(a)
308 #define float2Intzh(r,a) r=(I_)(a)
310 #define expFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,exp,a)
311 #define logFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,log,a)
312 #define sqrtFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sqrt,a)
313 #define sinFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sin,a)
314 #define cosFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,cos,a)
315 #define tanFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,tan,a)
316 #define asinFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,asin,a)
317 #define acosFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,acos,a)
318 #define atanFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,atan,a)
319 #define sinhFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sinh,a)
320 #define coshFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,cosh,a)
321 #define tanhFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,tanh,a)
322 #define powerFloatzh(r,a,b) r=(StgFloat) RET_PRIM_STGCALL2(StgDouble,pow,a,b)
324 /* -----------------------------------------------------------------------------
326 -------------------------------------------------------------------------- */
328 #define zpzhzh(r,a,b) r=(a)+(b)
329 #define zmzhzh(r,a,b) r=(a)-(b)
330 #define ztzhzh(r,a,b) r=(a)*(b)
331 #define zszhzh(r,a,b) r=(a)/(b)
332 #define negateDoublezh(r,a) r=-(a)
334 #define int2Doublezh(r,a) r=(StgDouble)(a)
335 #define double2Intzh(r,a) r=(I_)(a)
337 #define float2Doublezh(r,a) r=(StgDouble)(a)
338 #define double2Floatzh(r,a) r=(StgFloat)(a)
340 #define expDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,exp,a)
341 #define logDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,log,a)
342 #define sqrtDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sqrt,a)
343 #define sinDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sin,a)
344 #define cosDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,cos,a)
345 #define tanDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,tan,a)
346 #define asinDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,asin,a)
347 #define acosDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,acos,a)
348 #define atanDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,atan,a)
349 #define sinhDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sinh,a)
350 #define coshDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,cosh,a)
351 #define tanhDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,tanh,a)
353 #define ztztzhzh(r,a,b) r=(StgDouble) RET_PRIM_STGCALL2(StgDouble,pow,a,b)
355 /* -----------------------------------------------------------------------------
357 -------------------------------------------------------------------------- */
359 /* We can do integer2Int and cmpInteger inline, since they don't need
360 * to allocate any memory.
362 * integer2Int# is now modular.
365 #define integer2Intzh(r, sa,da) \
366 { StgWord word0 = ((StgWord *)BYTE_ARR_CTS(da))[0]; \
372 ( size < 0 && word0 != 0x8000000 ) ? \
377 #define integer2Wordzh(r, sa,da) \
378 { StgWord word0 = ((StgWord *)BYTE_ARR_CTS(da))[0]; \
380 (r) = ( size == 0 ) ? 0 : word0 ; \
383 #define cmpIntegerzh(r, s1,d1, s2,d2) \
387 arg1._mp_size = (s1); \
388 arg1._mp_alloc= ((StgArrWords *)d1)->words; \
389 arg1._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d1)); \
390 arg2._mp_size = (s2); \
391 arg2._mp_alloc= ((StgArrWords *)d2)->words; \
392 arg2._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d2)); \
394 (r) = RET_PRIM_STGCALL2(I_,mpz_cmp,&arg1,&arg2); \
397 #define cmpIntegerIntzh(r, s,d, i) \
400 arg._mp_size = (s); \
401 arg._mp_alloc = ((StgArrWords *)d)->words; \
402 arg._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d)); \
404 (r) = RET_PRIM_STGCALL2(I_,mpz_cmp_si,&arg,i); \
407 /* NOTE: gcdIntzh and gcdIntegerIntzh work only for positive inputs! */
409 /* mp_limb_t must be able to hold an StgInt for this to work properly */
410 #define gcdIntzh(r,a,b) \
411 { mp_limb_t aa = (mp_limb_t)(a); \
412 r = RET_STGCALL3(StgInt, mpn_gcd_1, (mp_limb_t *)(&aa), 1, (mp_limb_t)(b)); \
415 #define gcdIntegerIntzh(r,sa,a,b) \
416 r = RET_STGCALL3(StgInt, mpn_gcd_1, (mp_limb_t *)(BYTE_ARR_CTS(a)), sa, b)
418 /* The rest are all out-of-line: -------- */
420 /* Integer arithmetic */
421 EXTFUN_RTS(plusIntegerzh_fast);
422 EXTFUN_RTS(minusIntegerzh_fast);
423 EXTFUN_RTS(timesIntegerzh_fast);
424 EXTFUN_RTS(gcdIntegerzh_fast);
425 EXTFUN_RTS(quotRemIntegerzh_fast);
426 EXTFUN_RTS(quotIntegerzh_fast);
427 EXTFUN_RTS(remIntegerzh_fast);
428 EXTFUN_RTS(divExactIntegerzh_fast);
429 EXTFUN_RTS(divModIntegerzh_fast);
432 EXTFUN_RTS(int2Integerzh_fast);
433 EXTFUN_RTS(word2Integerzh_fast);
435 /* Floating-point decodings */
436 EXTFUN_RTS(decodeFloatzh_fast);
437 EXTFUN_RTS(decodeDoublezh_fast);
440 EXTFUN_RTS(andIntegerzh_fast);
441 EXTFUN_RTS(orIntegerzh_fast);
442 EXTFUN_RTS(xorIntegerzh_fast);
443 EXTFUN_RTS(complementIntegerzh_fast);
445 /* -----------------------------------------------------------------------------
447 -------------------------------------------------------------------------- */
449 #ifdef SUPPORT_LONG_LONGS
451 #define integerToWord64zh(r, sa,da) \
452 { unsigned long int* d; \
456 d = (unsigned long int *) (BYTE_ARR_CTS(da)); \
460 } else if ( s == 1) { \
463 res = (LW_)d[0] + (LW_)d[1] * 0x100000000ULL; \
468 #define integerToInt64zh(r, sa,da) \
469 { unsigned long int* d; \
473 d = (unsigned long int *) (BYTE_ARR_CTS(da)); \
477 } else if ( s == 1) { \
480 res = (LI_)d[0] + (LI_)d[1] * 0x100000000LL; \
489 EXTFUN_RTS(int64ToIntegerzh_fast);
490 EXTFUN_RTS(word64ToIntegerzh_fast);
492 /* The rest are (way!) out of line, implemented via C entry points.
494 I_ stg_gtWord64 (StgWord64, StgWord64);
495 I_ stg_geWord64 (StgWord64, StgWord64);
496 I_ stg_eqWord64 (StgWord64, StgWord64);
497 I_ stg_neWord64 (StgWord64, StgWord64);
498 I_ stg_ltWord64 (StgWord64, StgWord64);
499 I_ stg_leWord64 (StgWord64, StgWord64);
501 I_ stg_gtInt64 (StgInt64, StgInt64);
502 I_ stg_geInt64 (StgInt64, StgInt64);
503 I_ stg_eqInt64 (StgInt64, StgInt64);
504 I_ stg_neInt64 (StgInt64, StgInt64);
505 I_ stg_ltInt64 (StgInt64, StgInt64);
506 I_ stg_leInt64 (StgInt64, StgInt64);
508 LW_ stg_remWord64 (StgWord64, StgWord64);
509 LW_ stg_quotWord64 (StgWord64, StgWord64);
511 LI_ stg_remInt64 (StgInt64, StgInt64);
512 LI_ stg_quotInt64 (StgInt64, StgInt64);
513 LI_ stg_negateInt64 (StgInt64);
514 LI_ stg_plusInt64 (StgInt64, StgInt64);
515 LI_ stg_minusInt64 (StgInt64, StgInt64);
516 LI_ stg_timesInt64 (StgInt64, StgInt64);
518 LW_ stg_and64 (StgWord64, StgWord64);
519 LW_ stg_or64 (StgWord64, StgWord64);
520 LW_ stg_xor64 (StgWord64, StgWord64);
521 LW_ stg_not64 (StgWord64);
523 LW_ stg_shiftL64 (StgWord64, StgInt);
524 LW_ stg_shiftRL64 (StgWord64, StgInt);
525 LI_ stg_iShiftL64 (StgInt64, StgInt);
526 LI_ stg_iShiftRL64 (StgInt64, StgInt);
527 LI_ stg_iShiftRA64 (StgInt64, StgInt);
529 LI_ stg_intToInt64 (StgInt);
530 I_ stg_int64ToInt (StgInt64);
531 LW_ stg_int64ToWord64 (StgInt64);
533 LW_ stg_wordToWord64 (StgWord);
534 W_ stg_word64ToWord (StgWord64);
535 LI_ stg_word64ToInt64 (StgWord64);
538 /* -----------------------------------------------------------------------------
540 -------------------------------------------------------------------------- */
542 /* We cast to void* instead of StgChar* because this avoids a warning
543 * about increasing the alignment requirements.
545 #define REAL_BYTE_ARR_CTS(a) ((void *) (((StgArrWords *)(a))->payload))
546 #define REAL_PTRS_ARR_CTS(a) ((P_) (((StgMutArrPtrs *)(a))->payload))
549 #define BYTE_ARR_CTS(a) \
550 ({ ASSERT(GET_INFO((StgArrWords *)(a)) == &ARR_WORDS_info); \
551 REAL_BYTE_ARR_CTS(a); })
552 #define PTRS_ARR_CTS(a) \
553 ({ ASSERT((GET_INFO((StgMutArrPtrs *)(a)) == &MUT_ARR_PTRS_FROZEN_info) \
554 || (GET_INFO((StgMutArrPtrs *)(a)) == &MUT_ARR_PTRS_info)); \
555 REAL_PTRS_ARR_CTS(a); })
557 #define BYTE_ARR_CTS(a) REAL_BYTE_ARR_CTS(a)
558 #define PTRS_ARR_CTS(a) REAL_PTRS_ARR_CTS(a)
561 extern I_ genSymZh(void);
562 extern I_ resetGenSymZh(void);
564 /*--- everything except new*Array is done inline: */
566 #define sameMutableArrayzh(r,a,b) r=(I_)((a)==(b))
567 #define sameMutableByteArrayzh(r,a,b) r=(I_)((a)==(b))
569 #define readArrayzh(r,a,i) r=((PP_) PTRS_ARR_CTS(a))[(i)]
571 #define readCharArrayzh(r,a,i) indexCharOffAddrzh(r,BYTE_ARR_CTS(a),i)
572 #define readIntArrayzh(r,a,i) indexIntOffAddrzh(r,BYTE_ARR_CTS(a),i)
573 #define readWordArrayzh(r,a,i) indexWordOffAddrzh(r,BYTE_ARR_CTS(a),i)
574 #define readAddrArrayzh(r,a,i) indexAddrOffAddrzh(r,BYTE_ARR_CTS(a),i)
575 #define readFloatArrayzh(r,a,i) indexFloatOffAddrzh(r,BYTE_ARR_CTS(a),i)
576 #define readDoubleArrayzh(r,a,i) indexDoubleOffAddrzh(r,BYTE_ARR_CTS(a),i)
577 #define readStablePtrArrayzh(r,a,i) indexStablePtrOffAddrzh(r,BYTE_ARR_CTS(a),i)
578 #ifdef SUPPORT_LONG_LONGS
579 #define readInt64Arrayzh(r,a,i) indexInt64OffAddrzh(r,BYTE_ARR_CTS(a),i)
580 #define readWord64Arrayzh(r,a,i) indexWord64OffAddrzh(r,BYTE_ARR_CTS(a),i)
583 /* result ("r") arg ignored in write macros! */
584 #define writeArrayzh(a,i,v) ((PP_) PTRS_ARR_CTS(a))[(i)]=(v)
586 #define writeCharArrayzh(a,i,v) ((unsigned char *)(BYTE_ARR_CTS(a)))[i] = (unsigned char)(v)
587 /* unsigned char is for compatibility: the index is still in bytes. */
588 #define writeIntArrayzh(a,i,v) ((I_ *)(BYTE_ARR_CTS(a)))[i] = (v)
589 #define writeWordArrayzh(a,i,v) ((W_ *)(BYTE_ARR_CTS(a)))[i] = (v)
590 #define writeAddrArrayzh(a,i,v) ((PP_)(BYTE_ARR_CTS(a)))[i] = (v)
591 #define writeFloatArrayzh(a,i,v) \
592 ASSIGN_FLT((P_) (((StgFloat *)(BYTE_ARR_CTS(a))) + i),v)
593 #define writeDoubleArrayzh(a,i,v) \
594 ASSIGN_DBL((P_) (((StgDouble *)(BYTE_ARR_CTS(a))) + i),v)
595 #define writeStablePtrArrayzh(a,i,v) ((StgStablePtr *)(BYTE_ARR_CTS(a)))[i] = (v)
596 #ifdef SUPPORT_LONG_LONGS
597 #define writeInt64Arrayzh(a,i,v) ((LI_ *)(BYTE_ARR_CTS(a)))[i] = (v)
598 #define writeWord64Arrayzh(a,i,v) ((LW_ *)(BYTE_ARR_CTS(a)))[i] = (v)
601 #define indexArrayzh(r,a,i) r=((PP_) PTRS_ARR_CTS(a))[(i)]
603 #define indexCharArrayzh(r,a,i) indexCharOffAddrzh(r,BYTE_ARR_CTS(a),i)
604 #define indexIntArrayzh(r,a,i) indexIntOffAddrzh(r,BYTE_ARR_CTS(a),i)
605 #define indexWordArrayzh(r,a,i) indexWordOffAddrzh(r,BYTE_ARR_CTS(a),i)
606 #define indexAddrArrayzh(r,a,i) indexAddrOffAddrzh(r,BYTE_ARR_CTS(a),i)
607 #define indexFloatArrayzh(r,a,i) indexFloatOffAddrzh(r,BYTE_ARR_CTS(a),i)
608 #define indexDoubleArrayzh(r,a,i) indexDoubleOffAddrzh(r,BYTE_ARR_CTS(a),i)
609 #define indexStablePtrArrayzh(r,a,i) indexStablePtrOffAddrzh(r,BYTE_ARR_CTS(a),i)
610 #ifdef SUPPORT_LONG_LONGS
611 #define indexInt64Arrayzh(r,a,i) indexInt64OffAddrzh(r,BYTE_ARR_CTS(a),i)
612 #define indexWord64Arrayzh(r,a,i) indexWord64OffAddrzh(r,BYTE_ARR_CTS(a),i)
615 /* Freezing arrays-of-ptrs requires changing an info table, for the
616 benefit of the generational collector. It needs to scavenge mutable
617 objects, even if they are in old space. When they become immutable,
618 they can be removed from this scavenge list. */
620 #define unsafeFreezzeArrayzh(r,a) \
622 SET_INFO((StgClosure *)a,&MUT_ARR_PTRS_FROZEN_info); \
626 #define unsafeFreezzeByteArrayzh(r,a) r=(a)
628 EXTFUN_RTS(unsafeThawArrayzh_fast);
630 #define sizzeofByteArrayzh(r,a) \
631 r = (((StgArrWords *)(a))->words * sizeof(W_))
632 #define sizzeofMutableByteArrayzh(r,a) \
633 r = (((StgArrWords *)(a))->words * sizeof(W_))
635 /* and the out-of-line ones... */
637 EXTFUN_RTS(newCharArrayzh_fast);
638 EXTFUN_RTS(newIntArrayzh_fast);
639 EXTFUN_RTS(newWordArrayzh_fast);
640 EXTFUN_RTS(newAddrArrayzh_fast);
641 EXTFUN_RTS(newFloatArrayzh_fast);
642 EXTFUN_RTS(newDoubleArrayzh_fast);
643 EXTFUN_RTS(newStablePtrArrayzh_fast);
644 EXTFUN_RTS(newArrayzh_fast);
646 /* encoding and decoding of floats/doubles. */
648 /* We only support IEEE floating point format */
649 #include "ieee-flpt.h"
651 /* The decode operations are out-of-line because they need to allocate
654 #ifdef FLOATS_AS_DOUBLES
655 #define decodeFloatzh_fast decodeDoublezh_fast
657 EXTFUN_RTS(decodeFloatzh_fast);
660 EXTFUN_RTS(decodeDoublezh_fast);
662 /* grimy low-level support functions defined in StgPrimFloat.c */
664 extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
665 extern StgDouble __int_encodeDouble (I_ j, I_ e);
666 #ifndef FLOATS_AS_DOUBLES
667 extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
668 extern StgFloat __int_encodeFloat (I_ j, I_ e);
670 extern void __decodeDouble (MP_INT *man, I_ *_exp, StgDouble dbl);
671 extern void __decodeFloat (MP_INT *man, I_ *_exp, StgFloat flt);
672 extern StgInt isDoubleNaN(StgDouble d);
673 extern StgInt isDoubleInfinite(StgDouble d);
674 extern StgInt isDoubleDenormalized(StgDouble d);
675 extern StgInt isDoubleNegativeZero(StgDouble d);
676 extern StgInt isFloatNaN(StgFloat f);
677 extern StgInt isFloatInfinite(StgFloat f);
678 extern StgInt isFloatDenormalized(StgFloat f);
679 extern StgInt isFloatNegativeZero(StgFloat f);
681 /* -----------------------------------------------------------------------------
684 newMutVar is out of line.
685 -------------------------------------------------------------------------- */
687 EXTFUN_RTS(newMutVarzh_fast);
689 #define readMutVarzh(r,a) r=(P_)(((StgMutVar *)(a))->var)
690 #define writeMutVarzh(a,v) (P_)(((StgMutVar *)(a))->var)=(v)
691 #define sameMutVarzh(r,a,b) r=(I_)((a)==(b))
693 /* -----------------------------------------------------------------------------
696 All out of line, because they either allocate or may block.
697 -------------------------------------------------------------------------- */
698 #define sameMVarzh(r,a,b) r=(I_)((a)==(b))
700 /* Assume external decl of EMPTY_MVAR_info is in scope by now */
701 #define isEmptyMVarzh(r,a) r=(I_)((GET_INFO((StgMVar*)(a))) == &EMPTY_MVAR_info )
702 EXTFUN_RTS(newMVarzh_fast);
703 EXTFUN_RTS(takeMVarzh_fast);
704 EXTFUN_RTS(tryTakeMVarzh_fast);
705 EXTFUN_RTS(putMVarzh_fast);
708 /* -----------------------------------------------------------------------------
710 -------------------------------------------------------------------------- */
712 EXTFUN_RTS(waitReadzh_fast);
713 EXTFUN_RTS(waitWritezh_fast);
714 EXTFUN_RTS(delayzh_fast);
716 /* -----------------------------------------------------------------------------
717 Primitive I/O, error-handling PrimOps
718 -------------------------------------------------------------------------- */
720 EXTFUN_RTS(catchzh_fast);
721 EXTFUN_RTS(raisezh_fast);
723 extern void stg_exit(I_ n) __attribute__ ((noreturn));
725 /* -----------------------------------------------------------------------------
726 Stable Name / Stable Pointer PrimOps
727 -------------------------------------------------------------------------- */
731 EXTFUN_RTS(makeStableNamezh_fast);
733 #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
735 #define eqStableNamezh(r,sn1,sn2) \
736 (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
738 #define makeStablePtrzh(r,a) \
739 r = RET_STGCALL1(StgStablePtr,getStablePtr,a)
741 #define deRefStablePtrzh(r,sp) do { \
742 ASSERT(stable_ptr_table[stgCast(StgWord,sp) & ~STABLEPTR_WEIGHT_MASK].weight > 0); \
743 r = stable_ptr_table[stgCast(StgWord,sp) & ~STABLEPTR_WEIGHT_MASK].addr; \
746 #define eqStablePtrzh(r,sp1,sp2) \
747 (r = ((stgCast(StgWord,sp1) & ~STABLEPTR_WEIGHT_MASK) == (stgCast(StgWord,sp2) & ~STABLEPTR_WEIGHT_MASK)))
751 /* -----------------------------------------------------------------------------
752 Concurrency/Exception PrimOps.
753 -------------------------------------------------------------------------- */
755 EXTFUN_RTS(forkzh_fast);
756 EXTFUN_RTS(yieldzh_fast);
757 EXTFUN_RTS(killThreadzh_fast);
758 EXTFUN_RTS(seqzh_fast);
759 EXTFUN_RTS(blockAsyncExceptionszh_fast);
760 EXTFUN_RTS(unblockAsyncExceptionszh_fast);
762 #define myThreadIdzh(t) (t = CurrentTSO)
764 extern int cmp_thread(const StgTSO *tso1, const StgTSO *tso2);
766 /* ------------------------------------------------------------------------
769 A par in the Haskell code is ultimately translated to a parzh macro
770 (with a case wrapped around it to guarantee that the macro is actually
771 executed; see compiler/prelude/PrimOps.lhs)
772 In GUM and SMP we only add a pointer to the spark pool.
773 In GranSim we call an RTS fct, forwarding additional parameters which
774 supply info on granularity of the computation, size of the result value
775 and the degree of parallelism in the sparked expression.
776 ---------------------------------------------------------------------- */
780 #define parzh(r,node) PAR(r,node,1,0,0,0,0,0)
783 #define parAtzh(r,node,where,identifier,gran_info,size_info,par_info,rest) \
784 parAT(r,node,where,identifier,gran_info,size_info,par_info,rest,1)
787 #define parAtAbszh(r,node,proc,identifier,gran_info,size_info,par_info,rest) \
788 parAT(r,node,proc,identifier,gran_info,size_info,par_info,rest,2)
791 #define parAtRelzh(r,node,proc,identifier,gran_info,size_info,par_info,rest) \
792 parAT(r,node,proc,identifier,gran_info,size_info,par_info,rest,3)
794 //@cindex _parAtForNow_
795 #define parAtForNowzh(r,node,where,identifier,gran_info,size_info,par_info,rest) \
796 parAT(r,node,where,identifier,gran_info,size_info,par_info,rest,0)
798 #define parAT(r,node,where,identifier,gran_info,size_info,par_info,rest,local) \
800 if (closure_SHOULD_SPARK((StgClosure*)node)) { \
804 STGCALL6(newSpark, node,identifier,gran_info,size_info,par_info,local); \
806 case 2: p = where; /* parAtAbs means absolute PE no. expected */ \
808 case 3: p = CurrentProc+where; /* parAtRel means rel PE no. expected */\
810 default: p = where_is(where); /* parAt means closure expected */ \
813 /* update GranSim state according to this spark */ \
814 STGCALL3(GranSimSparkAtAbs, result, (I_)p, identifier); \
819 #define parLocalzh(r,node,identifier,gran_info,size_info,par_info,rest) \
820 PAR(r,node,rest,identifier,gran_info,size_info,par_info,1)
822 //@cindex _parGlobal_
823 #define parGlobalzh(r,node,identifier,gran_info,size_info,par_info,rest) \
824 PAR(r,node,rest,identifier,gran_info,size_info,par_info,0)
826 #define PAR(r,node,rest,identifier,gran_info,size_info,par_info,local) \
828 if (closure_SHOULD_SPARK((StgClosure*)node)) { \
830 result = RET_STGCALL6(rtsSpark*, newSpark, \
831 node,identifier,gran_info,size_info,par_info,local);\
832 STGCALL1(add_to_spark_queue,result); \
833 STGCALL2(GranSimSpark, local,(P_)node); \
837 #define copyablezh(r,node) \
838 /* copyable not yet implemented!! */
840 #define noFollowzh(r,node) \
841 /* noFollow not yet implemented!! */
843 #elif defined(SMP) || defined(PAR)
845 #define parzh(r,node) \
847 extern unsigned int context_switch; \
848 if (closure_SHOULD_SPARK((StgClosure *)node) && \
849 SparkTl < SparkLim) { \
850 *SparkTl++ = (StgClosure *)(node); \
852 r = context_switch = 1; \
854 #else /* !GRAN && !SMP && !PAR */
855 #define parzh(r,node) r = 1
858 /* -----------------------------------------------------------------------------
860 -------------------------------------------------------------------------- */
862 /* warning: extremely non-referentially transparent, need to hide in
863 an appropriate monad.
865 ToDo: follow indirections.
868 #define reallyUnsafePtrEqualityzh(r,a,b) r=((StgPtr)(a) == (StgPtr)(b))
870 /* -----------------------------------------------------------------------------
871 Weak Pointer PrimOps.
872 -------------------------------------------------------------------------- */
876 EXTFUN_RTS(mkWeakzh_fast);
877 EXTFUN_RTS(finalizzeWeakzh_fast);
879 #define deRefWeakzh(code,val,w) \
880 if (((StgWeak *)w)->header.info == &WEAK_info) { \
882 val = (P_)((StgWeak *)w)->value; \
888 #define sameWeakzh(w1,w2) ((w1)==(w2))
892 /* -----------------------------------------------------------------------------
893 Foreign Object PrimOps.
894 -------------------------------------------------------------------------- */
898 #define ForeignObj_CLOSURE_DATA(c) (((StgForeignObj *)c)->data)
900 #define foreignObjToAddrzh(r,fo) r=ForeignObj_CLOSURE_DATA(fo)
901 #define touchzh(o) /* nothing */
903 EXTFUN_RTS(mkForeignObjzh_fast);
905 #define writeForeignObjzh(res,datum) \
906 (ForeignObj_CLOSURE_DATA(res) = (P_)(datum))
908 #define eqForeignObj(f1,f2) ((f1)==(f2))
910 #define indexCharOffForeignObjzh(r,fo,i) indexCharOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
911 #define indexIntOffForeignObjzh(r,fo,i) indexIntOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
912 #define indexWordOffForeignObjzh(r,fo,i) indexWordOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
913 #define indexAddrOffForeignObjzh(r,fo,i) indexAddrOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
914 #define indexFloatOffForeignObjzh(r,fo,i) indexFloatOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
915 #define indexDoubleOffForeignObjzh(r,fo,i) indexDoubleOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
916 #define indexStablePtrOffForeignObjzh(r,fo,i) indexStablePtrOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
917 #ifdef SUPPORT_LONG_LONGS
918 #define indexInt64OffForeignObjzh(r,fo,i) indexInt64OffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
919 #define indexWord64OffForeignObjzh(r,fo,i) indexWord64OffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
925 /* -----------------------------------------------------------------------------
927 -------------------------------------------------------------------------- */
930 #define dataToTagzh(r,a) \
931 do { StgClosure* tmp = (StgClosure*)(a); \
932 CHASE_INDIRECTIONS(tmp); \
933 r = (GET_TAG(((StgClosure *)tmp)->header.info)); \
936 /* Original version doesn't chase indirections. */
937 #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
940 /* tagToEnum# is handled directly by the code generator. */
942 /* -----------------------------------------------------------------------------
943 Signal processing. Not really primops, but called directly from
945 -------------------------------------------------------------------------- */
947 #define STG_SIG_DFL (-1)
948 #define STG_SIG_IGN (-2)
949 #define STG_SIG_ERR (-3)
950 #define STG_SIG_HAN (-4)
952 extern StgInt sig_install (StgInt, StgInt, StgStablePtr, sigset_t *);
953 #define stg_sig_default(sig,mask) sig_install(sig,STG_SIG_DFL,0,(sigset_t *)mask)
954 #define stg_sig_ignore(sig,mask) sig_install(sig,STG_SIG_IGN,0,(sigset_t *)mask)
955 #define stg_sig_catch(sig,ptr,mask) sig_install(sig,STG_SIG_HAN,ptr,(sigset_t *)mask)
957 #endif /* PRIMOPS_H */