1 /* -----------------------------------------------------------------------------
2 * $Id: PrimOps.h,v 1.37 1999/08/25 16:11:43 simonmar Exp $
4 * (c) The GHC Team, 1998-1999
6 * Macros for primitive operations in STG-ish C code.
8 * ---------------------------------------------------------------------------*/
13 /* -----------------------------------------------------------------------------
15 -------------------------------------------------------------------------- */
17 #define gtCharzh(r,a,b) r=(I_)((a)> (b))
18 #define geCharzh(r,a,b) r=(I_)((a)>=(b))
19 #define eqCharzh(r,a,b) r=(I_)((a)==(b))
20 #define neCharzh(r,a,b) r=(I_)((a)!=(b))
21 #define ltCharzh(r,a,b) r=(I_)((a)< (b))
22 #define leCharzh(r,a,b) r=(I_)((a)<=(b))
24 /* Int comparisons: >#, >=# etc */
25 #define zgzh(r,a,b) r=(I_)((I_)(a) >(I_)(b))
26 #define zgzezh(r,a,b) r=(I_)((I_)(a)>=(I_)(b))
27 #define zezezh(r,a,b) r=(I_)((I_)(a)==(I_)(b))
28 #define zszezh(r,a,b) r=(I_)((I_)(a)!=(I_)(b))
29 #define zlzh(r,a,b) r=(I_)((I_)(a) <(I_)(b))
30 #define zlzezh(r,a,b) r=(I_)((I_)(a)<=(I_)(b))
32 #define gtWordzh(r,a,b) r=(I_)((W_)(a) >(W_)(b))
33 #define geWordzh(r,a,b) r=(I_)((W_)(a)>=(W_)(b))
34 #define eqWordzh(r,a,b) r=(I_)((W_)(a)==(W_)(b))
35 #define neWordzh(r,a,b) r=(I_)((W_)(a)!=(W_)(b))
36 #define ltWordzh(r,a,b) r=(I_)((W_)(a) <(W_)(b))
37 #define leWordzh(r,a,b) r=(I_)((W_)(a)<=(W_)(b))
39 #define gtAddrzh(r,a,b) r=(I_)((a) >(b))
40 #define geAddrzh(r,a,b) r=(I_)((a)>=(b))
41 #define eqAddrzh(r,a,b) r=(I_)((a)==(b))
42 #define neAddrzh(r,a,b) r=(I_)((a)!=(b))
43 #define ltAddrzh(r,a,b) r=(I_)((a) <(b))
44 #define leAddrzh(r,a,b) r=(I_)((a)<=(b))
46 #define gtFloatzh(r,a,b) r=(I_)((a)> (b))
47 #define geFloatzh(r,a,b) r=(I_)((a)>=(b))
48 #define eqFloatzh(r,a,b) r=(I_)((a)==(b))
49 #define neFloatzh(r,a,b) r=(I_)((a)!=(b))
50 #define ltFloatzh(r,a,b) r=(I_)((a)< (b))
51 #define leFloatzh(r,a,b) r=(I_)((a)<=(b))
53 /* Double comparisons: >##, >=#@ etc */
54 #define zgzhzh(r,a,b) r=(I_)((a) >(b))
55 #define zgzezhzh(r,a,b) r=(I_)((a)>=(b))
56 #define zezezhzh(r,a,b) r=(I_)((a)==(b))
57 #define zszezhzh(r,a,b) r=(I_)((a)!=(b))
58 #define zlzhzh(r,a,b) r=(I_)((a) <(b))
59 #define zlzezhzh(r,a,b) r=(I_)((a)<=(b))
61 /* -----------------------------------------------------------------------------
63 -------------------------------------------------------------------------- */
65 #define ordzh(r,a) r=(I_)((W_) (a))
66 #define chrzh(r,a) r=(StgChar)((W_)(a))
68 /* -----------------------------------------------------------------------------
70 -------------------------------------------------------------------------- */
72 I_ stg_div (I_ a, I_ b);
74 #define zpzh(r,a,b) r=(a)+(b)
75 #define zmzh(r,a,b) r=(a)-(b)
76 #define ztzh(r,a,b) r=(a)*(b)
77 #define quotIntzh(r,a,b) r=(a)/(b)
78 #define zszh(r,a,b) r=ULTRASAFESTGCALL2(I_,(void *, I_, I_),stg_div,(a),(b))
79 #define remIntzh(r,a,b) r=(a)%(b)
80 #define negateIntzh(r,a) r=-(a)
82 /* -----------------------------------------------------------------------------
83 * Int operations with carry.
84 * -------------------------------------------------------------------------- */
86 /* With some bit-twiddling, we can define int{Add,Sub}Czh portably in
87 * C, and without needing any comparisons. This may not be the
88 * fastest way to do it - if you have better code, please send it! --SDM
90 * Return : r = a + b, c = 0 if no overflow, 1 on overflow.
92 * We currently don't make use of the r value if c is != 0 (i.e.
93 * overflow), we just convert to big integers and try again. This
94 * could be improved by making r and c the correct values for
95 * plugging into a new J#.
97 #define addIntCzh(r,c,a,b) \
99 c = ((StgWord)(~(a^b) & (a^r))) \
100 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
104 #define subIntCzh(r,c,a,b) \
106 c = ((StgWord)((a^b) & (a^r))) \
107 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
110 /* Multiply with overflow checking.
112 * This is slightly more tricky - the usual sign rules for add/subtract
115 * On x86 hardware we use a hand-crafted assembly fragment to do the job.
117 * On other 32-bit machines we use gcc's 'long long' types, finding
118 * overflow with some careful bit-twiddling.
120 * On 64-bit machines where gcc's 'long long' type is also 64-bits,
121 * we use a crude approximation, testing whether either operand is
122 * larger than 32-bits; if neither is, then we go ahead with the
128 #define mulIntCzh(r,c,a,b) \
130 __asm__("xor %1,%1\n\t \
135 : "=r" (r), "=&r" (c) : "r" (a), "0" (b)); \
138 #elif SIZEOF_VOID_P == 4
140 #ifdef WORDS_BIGENDIAN
153 #define mulIntCzh(r,c,a,b) \
156 z.l = (StgInt64)a * (StgInt64)b; \
159 if (c == 0 || c == -1) { \
160 c = ((StgWord)((a^b) ^ r)) \
161 >> (BITS_PER_BYTE * sizeof(I_) - 1); \
164 /* Careful: the carry calculation above is extremely delicate. Make sure
165 * you test it thoroughly after changing it.
170 #define HALF_INT (1 << (BITS_PER_BYTE * sizeof(I_) / 2))
172 #define stg_abs(a) ((a) < 0 ? -(a) : (a))
174 #define mulIntCzh(r,c,a,b) \
176 if (stg_abs(a) >= HALF_INT \
177 stg_abs(b) >= HALF_INT) { \
186 /* -----------------------------------------------------------------------------
188 -------------------------------------------------------------------------- */
190 #define quotWordzh(r,a,b) r=((W_)a)/((W_)b)
191 #define remWordzh(r,a,b) r=((W_)a)%((W_)b)
193 #define andzh(r,a,b) r=(a)&(b)
194 #define orzh(r,a,b) r=(a)|(b)
195 #define xorzh(r,a,b) r=(a)^(b)
196 #define notzh(r,a) r=~(a)
198 /* The extra tests below properly define the behaviour when shifting
199 * by offsets larger than the width of the value being shifted. Doing
200 * so is undefined in C (and in fact gives different answers depending
201 * on whether the operation is constant folded or not with gcc on x86!)
204 #define shiftLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)<<(b)
205 #define shiftRLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)>>(b)
206 #define iShiftLzh(r,a,b) r=((b) >= BITS_IN(W_)) ? 0 : (a)<<(b)
207 /* Right shifting of signed quantities is not portable in C, so
208 the behaviour you'll get from using these primops depends
209 on the whatever your C compiler is doing. ToDo: fix/document. -- sof 8/98
211 #define iShiftRAzh(r,a,b) r=((b) >= BITS_IN(I_)) ? (((a) < 0) ? -1 : 0) : (a)>>(b)
212 #define iShiftRLzh(r,a,b) r=((b) >= BITS_IN(I_)) ? 0 : ((W_)(a))>>(b)
214 #define int2Wordzh(r,a) r=(W_)(a)
215 #define word2Intzh(r,a) r=(I_)(a)
217 /* -----------------------------------------------------------------------------
219 -------------------------------------------------------------------------- */
221 #define int2Addrzh(r,a) r=(A_)(a)
222 #define addr2Intzh(r,a) r=(I_)(a)
224 #define indexCharOffAddrzh(r,a,i) r= ((C_ *)(a))[i]
225 #define indexIntOffAddrzh(r,a,i) r= ((I_ *)(a))[i]
226 #define indexAddrOffAddrzh(r,a,i) r= ((PP_)(a))[i]
227 #define indexFloatOffAddrzh(r,a,i) r= PK_FLT((P_) (((StgFloat *)(a)) + i))
228 #define indexDoubleOffAddrzh(r,a,i) r= PK_DBL((P_) (((StgDouble *)(a)) + i))
229 #define indexStablePtrOffAddrzh(r,a,i) r= ((StgStablePtr *)(a))[i]
230 #ifdef SUPPORT_LONG_LONGS
231 #define indexInt64OffAddrzh(r,a,i) r= ((LI_ *)(a))[i]
232 #define indexWord64OffAddrzh(r,a,i) r= ((LW_ *)(a))[i]
235 #define writeCharOffAddrzh(a,i,v) ((C_ *)(a))[i] = (v)
236 #define writeIntOffAddrzh(a,i,v) ((I_ *)(a))[i] = (v)
237 #define writeWordOffAddrzh(a,i,v) ((W_ *)(a))[i] = (v)
238 #define writeAddrOffAddrzh(a,i,v) ((PP_)(a))[i] = (v)
239 #define writeForeignObjOffAddrzh(a,i,v) ((PP_)(a))[i] = ForeignObj_CLOSURE_DATA(v)
240 #define writeFloatOffAddrzh(a,i,v) ASSIGN_FLT((P_) (((StgFloat *)(a)) + i),v)
241 #define writeDoubleOffAddrzh(a,i,v) ASSIGN_DBL((P_) (((StgDouble *)(a)) + i),v)
242 #define writeStablePtrOffAddrzh(a,i,v) ((StgStablePtr *)(a))[i] = (v)
243 #ifdef SUPPORT_LONG_LONGS
244 #define writeInt64OffAddrzh(a,i,v) ((LI_ *)(a))[i] = (v)
245 #define writeWord64OffAddrzh(a,i,v) ((LW_ *)(a))[i] = (v)
248 /* -----------------------------------------------------------------------------
250 -------------------------------------------------------------------------- */
252 #define plusFloatzh(r,a,b) r=(a)+(b)
253 #define minusFloatzh(r,a,b) r=(a)-(b)
254 #define timesFloatzh(r,a,b) r=(a)*(b)
255 #define divideFloatzh(r,a,b) r=(a)/(b)
256 #define negateFloatzh(r,a) r=-(a)
258 #define int2Floatzh(r,a) r=(StgFloat)(a)
259 #define float2Intzh(r,a) r=(I_)(a)
261 #define expFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,exp,a)
262 #define logFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,log,a)
263 #define sqrtFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sqrt,a)
264 #define sinFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sin,a)
265 #define cosFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,cos,a)
266 #define tanFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,tan,a)
267 #define asinFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,asin,a)
268 #define acosFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,acos,a)
269 #define atanFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,atan,a)
270 #define sinhFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,sinh,a)
271 #define coshFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,cosh,a)
272 #define tanhFloatzh(r,a) r=(StgFloat) RET_PRIM_STGCALL1(StgDouble,tanh,a)
273 #define powerFloatzh(r,a,b) r=(StgFloat) RET_PRIM_STGCALL2(StgDouble,pow,a,b)
275 /* -----------------------------------------------------------------------------
277 -------------------------------------------------------------------------- */
279 #define zpzhzh(r,a,b) r=(a)+(b)
280 #define zmzhzh(r,a,b) r=(a)-(b)
281 #define ztzhzh(r,a,b) r=(a)*(b)
282 #define zszhzh(r,a,b) r=(a)/(b)
283 #define negateDoublezh(r,a) r=-(a)
285 #define int2Doublezh(r,a) r=(StgDouble)(a)
286 #define double2Intzh(r,a) r=(I_)(a)
288 #define float2Doublezh(r,a) r=(StgDouble)(a)
289 #define double2Floatzh(r,a) r=(StgFloat)(a)
291 #define expDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,exp,a)
292 #define logDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,log,a)
293 #define sqrtDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sqrt,a)
294 #define sinDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sin,a)
295 #define cosDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,cos,a)
296 #define tanDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,tan,a)
297 #define asinDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,asin,a)
298 #define acosDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,acos,a)
299 #define atanDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,atan,a)
300 #define sinhDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,sinh,a)
301 #define coshDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,cosh,a)
302 #define tanhDoublezh(r,a) r=(StgDouble) RET_PRIM_STGCALL1(StgDouble,tanh,a)
304 #define ztztzhzh(r,a,b) r=(StgDouble) RET_PRIM_STGCALL2(StgDouble,pow,a,b)
306 /* -----------------------------------------------------------------------------
308 -------------------------------------------------------------------------- */
310 /* We can do integer2Int and cmpInteger inline, since they don't need
311 * to allocate any memory.
313 * integer2Int# is now modular.
316 #define integer2Intzh(r, sa,da) \
317 { StgWord word0 = ((StgWord *)BYTE_ARR_CTS(da))[0]; \
323 ( size < 0 && word0 != 0x8000000 ) ? \
328 #define integer2Wordzh(r, sa,da) \
329 { StgWord word0 = ((StgWord *)BYTE_ARR_CTS(da))[0]; \
331 (r) = ( size == 0 ) ? 0 : word0 ; \
334 #define cmpIntegerzh(r, s1,d1, s2,d2) \
338 arg1._mp_size = (s1); \
339 arg1._mp_alloc= ((StgArrWords *)d1)->words; \
340 arg1._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d1)); \
341 arg2._mp_size = (s2); \
342 arg2._mp_alloc= ((StgArrWords *)d2)->words; \
343 arg2._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d2)); \
345 (r) = RET_PRIM_STGCALL2(I_,mpz_cmp,&arg1,&arg2); \
348 #define cmpIntegerIntzh(r, s,d, i) \
351 arg._mp_size = (s); \
352 arg._mp_alloc = ((StgArrWords *)d)->words; \
353 arg._mp_d = (unsigned long int *) (BYTE_ARR_CTS(d)); \
355 (r) = RET_PRIM_STGCALL2(I_,mpz_cmp_si,&arg,i); \
358 /* The rest are all out-of-line: -------- */
360 /* Integer arithmetic */
361 EF_(plusIntegerzh_fast);
362 EF_(minusIntegerzh_fast);
363 EF_(timesIntegerzh_fast);
364 EF_(gcdIntegerzh_fast);
365 EF_(quotRemIntegerzh_fast);
366 EF_(divModIntegerzh_fast);
369 EF_(int2Integerzh_fast);
370 EF_(word2Integerzh_fast);
371 EF_(addr2Integerzh_fast);
373 /* Floating-point decodings */
374 EF_(decodeFloatzh_fast);
375 EF_(decodeDoublezh_fast);
377 /* -----------------------------------------------------------------------------
379 -------------------------------------------------------------------------- */
381 #ifdef SUPPORT_LONG_LONGS
383 #define integerToWord64zh(r, sa,da) \
384 { unsigned long int* d; \
388 d = (unsigned long int *) (BYTE_ARR_CTS(da)); \
389 aa = ((StgArrWords *)da)->words; \
392 } else if ( (aa) == 1) { \
395 res = (LW_)d[0] + (LW_)d[1] * 0x100000000ULL; \
400 #define integerToInt64zh(r, sa,da) \
401 { unsigned long int* d; \
405 d = (unsigned long int *) (BYTE_ARR_CTS(da)); \
406 aa = ((StgArrWords *)da)->words; \
409 } else if ( (aa) == 1) { \
412 res = (LI_)d[0] + (LI_)d[1] * 0x100000000LL; \
421 EF_(int64ToIntegerzh_fast);
422 EF_(word64ToIntegerzh_fast);
424 /* The rest are (way!) out of line, implemented via C entry points.
426 I_ stg_gtWord64 (StgWord64, StgWord64);
427 I_ stg_geWord64 (StgWord64, StgWord64);
428 I_ stg_eqWord64 (StgWord64, StgWord64);
429 I_ stg_neWord64 (StgWord64, StgWord64);
430 I_ stg_ltWord64 (StgWord64, StgWord64);
431 I_ stg_leWord64 (StgWord64, StgWord64);
433 I_ stg_gtInt64 (StgInt64, StgInt64);
434 I_ stg_geInt64 (StgInt64, StgInt64);
435 I_ stg_eqInt64 (StgInt64, StgInt64);
436 I_ stg_neInt64 (StgInt64, StgInt64);
437 I_ stg_ltInt64 (StgInt64, StgInt64);
438 I_ stg_leInt64 (StgInt64, StgInt64);
440 LW_ stg_remWord64 (StgWord64, StgWord64);
441 LW_ stg_quotWord64 (StgWord64, StgWord64);
443 LI_ stg_remInt64 (StgInt64, StgInt64);
444 LI_ stg_quotInt64 (StgInt64, StgInt64);
445 LI_ stg_negateInt64 (StgInt64);
446 LI_ stg_plusInt64 (StgInt64, StgInt64);
447 LI_ stg_minusInt64 (StgInt64, StgInt64);
448 LI_ stg_timesInt64 (StgInt64, StgInt64);
450 LW_ stg_and64 (StgWord64, StgWord64);
451 LW_ stg_or64 (StgWord64, StgWord64);
452 LW_ stg_xor64 (StgWord64, StgWord64);
453 LW_ stg_not64 (StgWord64);
455 LW_ stg_shiftL64 (StgWord64, StgInt);
456 LW_ stg_shiftRL64 (StgWord64, StgInt);
457 LI_ stg_iShiftL64 (StgInt64, StgInt);
458 LI_ stg_iShiftRL64 (StgInt64, StgInt);
459 LI_ stg_iShiftRA64 (StgInt64, StgInt);
461 LI_ stg_intToInt64 (StgInt);
462 I_ stg_int64ToInt (StgInt64);
463 LW_ stg_int64ToWord64 (StgInt64);
465 LW_ stg_wordToWord64 (StgWord);
466 W_ stg_word64ToWord (StgWord64);
467 LI_ stg_word64ToInt64 (StgWord64);
470 /* -----------------------------------------------------------------------------
472 -------------------------------------------------------------------------- */
474 /* We cast to void* instead of StgChar* because this avoids a warning
475 * about increasing the alignment requirements.
477 #define REAL_BYTE_ARR_CTS(a) ((void *) (((StgArrWords *)(a))->payload))
478 #define REAL_PTRS_ARR_CTS(a) ((P_) (((StgMutArrPtrs *)(a))->payload))
481 #define BYTE_ARR_CTS(a) \
482 ({ ASSERT(GET_INFO((StgArrWords *)(a)) == &ARR_WORDS_info); \
483 REAL_BYTE_ARR_CTS(a); })
484 #define PTRS_ARR_CTS(a) \
485 ({ ASSERT((GET_INFO((StgMutArrPtrs *)(a)) == &MUT_ARR_PTRS_FROZEN_info) \
486 || (GET_INFO((StgMutArrPtrs *)(a)) == &MUT_ARR_PTRS_info)); \
487 REAL_PTRS_ARR_CTS(a); })
489 #define BYTE_ARR_CTS(a) REAL_BYTE_ARR_CTS(a)
490 #define PTRS_ARR_CTS(a) REAL_PTRS_ARR_CTS(a)
493 extern I_ genSymZh(void);
494 extern I_ resetGenSymZh(void);
496 /*--- everything except new*Array is done inline: */
498 #define sameMutableArrayzh(r,a,b) r=(I_)((a)==(b))
499 #define sameMutableByteArrayzh(r,a,b) r=(I_)((a)==(b))
501 #define readArrayzh(r,a,i) r=((PP_) PTRS_ARR_CTS(a))[(i)]
503 #define readCharArrayzh(r,a,i) indexCharOffAddrzh(r,BYTE_ARR_CTS(a),i)
504 #define readIntArrayzh(r,a,i) indexIntOffAddrzh(r,BYTE_ARR_CTS(a),i)
505 #define readWordArrayzh(r,a,i) indexWordOffAddrzh(r,BYTE_ARR_CTS(a),i)
506 #define readAddrArrayzh(r,a,i) indexAddrOffAddrzh(r,BYTE_ARR_CTS(a),i)
507 #define readFloatArrayzh(r,a,i) indexFloatOffAddrzh(r,BYTE_ARR_CTS(a),i)
508 #define readDoubleArrayzh(r,a,i) indexDoubleOffAddrzh(r,BYTE_ARR_CTS(a),i)
509 #define readStablePtrArrayzh(r,a,i) indexStablePtrOffAddrzh(r,BYTE_ARR_CTS(a),i)
510 #ifdef SUPPORT_LONG_LONGS
511 #define readInt64Arrayzh(r,a,i) indexInt64OffAddrzh(r,BYTE_ARR_CTS(a),i)
512 #define readWord64Arrayzh(r,a,i) indexWord64OffAddrzh(r,BYTE_ARR_CTS(a),i)
515 /* result ("r") arg ignored in write macros! */
516 #define writeArrayzh(a,i,v) ((PP_) PTRS_ARR_CTS(a))[(i)]=(v)
518 #define writeCharArrayzh(a,i,v) ((C_ *)(BYTE_ARR_CTS(a)))[i] = (v)
519 #define writeIntArrayzh(a,i,v) ((I_ *)(BYTE_ARR_CTS(a)))[i] = (v)
520 #define writeWordArrayzh(a,i,v) ((W_ *)(BYTE_ARR_CTS(a)))[i] = (v)
521 #define writeAddrArrayzh(a,i,v) ((PP_)(BYTE_ARR_CTS(a)))[i] = (v)
522 #define writeFloatArrayzh(a,i,v) \
523 ASSIGN_FLT((P_) (((StgFloat *)(BYTE_ARR_CTS(a))) + i),v)
524 #define writeDoubleArrayzh(a,i,v) \
525 ASSIGN_DBL((P_) (((StgDouble *)(BYTE_ARR_CTS(a))) + i),v)
526 #define writeStablePtrArrayzh(a,i,v) ((StgStablePtr *)(BYTE_ARR_CTS(a)))[i] = (v)
527 #ifdef SUPPORT_LONG_LONGS
528 #define writeInt64Arrayzh(a,i,v) ((LI_ *)(BYTE_ARR_CTS(a)))[i] = (v)
529 #define writeWord64Arrayzh(a,i,v) ((LW_ *)(BYTE_ARR_CTS(a)))[i] = (v)
532 #define indexArrayzh(r,a,i) r=((PP_) PTRS_ARR_CTS(a))[(i)]
534 #define indexCharArrayzh(r,a,i) indexCharOffAddrzh(r,BYTE_ARR_CTS(a),i)
535 #define indexIntArrayzh(r,a,i) indexIntOffAddrzh(r,BYTE_ARR_CTS(a),i)
536 #define indexWordArrayzh(r,a,i) indexWordOffAddrzh(r,BYTE_ARR_CTS(a),i)
537 #define indexAddrArrayzh(r,a,i) indexAddrOffAddrzh(r,BYTE_ARR_CTS(a),i)
538 #define indexFloatArrayzh(r,a,i) indexFloatOffAddrzh(r,BYTE_ARR_CTS(a),i)
539 #define indexDoubleArrayzh(r,a,i) indexDoubleOffAddrzh(r,BYTE_ARR_CTS(a),i)
540 #define indexStablePtrArrayzh(r,a,i) indexStablePtrOffAddrzh(r,BYTE_ARR_CTS(a),i)
541 #ifdef SUPPORT_LONG_LONGS
542 #define indexInt64Arrayzh(r,a,i) indexInt64OffAddrzh(r,BYTE_ARR_CTS(a),i)
543 #define indexWord64Arrayzh(r,a,i) indexWord64OffAddrzh(r,BYTE_ARR_CTS(a),i)
546 #define indexCharOffForeignObjzh(r,fo,i) indexCharOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
547 #define indexIntOffForeignObjzh(r,fo,i) indexIntOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
548 #define indexWordOffForeignObjzh(r,fo,i) indexWordOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
549 #define indexAddrOffForeignObjzh(r,fo,i) indexAddrOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
550 #define indexFloatOffForeignObjzh(r,fo,i) indexFloatOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
551 #define indexDoubleOffForeignObjzh(r,fo,i) indexDoubleOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
552 #define indexStablePtrOffForeignObjzh(r,fo,i) indexStablePtrOffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
553 #ifdef SUPPORT_LONG_LONGS
554 #define indexInt64OffForeignObjzh(r,fo,i) indexInt64OffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
555 #define indexWord64OffForeignObjzh(r,fo,i) indexWord64OffAddrzh(r,ForeignObj_CLOSURE_DATA(fo),i)
558 #define indexCharOffAddrzh(r,a,i) r= ((C_ *)(a))[i]
559 #define indexIntOffAddrzh(r,a,i) r= ((I_ *)(a))[i]
560 #define indexWordOffAddrzh(r,a,i) r= ((W_ *)(a))[i]
561 #define indexAddrOffAddrzh(r,a,i) r= ((PP_)(a))[i]
562 #define indexFloatOffAddrzh(r,a,i) r= PK_FLT((P_) (((StgFloat *)(a)) + i))
563 #define indexDoubleOffAddrzh(r,a,i) r= PK_DBL((P_) (((StgDouble *)(a)) + i))
564 #ifdef SUPPORT_LONG_LONGS
565 #define indexInt64OffAddrzh(r,a,i) r= ((LI_ *)(a))[i]
566 #define indexWord64OffAddrzh(r,a,i) r= ((LW_ *)(a))[i]
569 /* Freezing arrays-of-ptrs requires changing an info table, for the
570 benefit of the generational collector. It needs to scavenge mutable
571 objects, even if they are in old space. When they become immutable,
572 they can be removed from this scavenge list. */
574 #define unsafeFreezzeArrayzh(r,a) \
576 SET_INFO((StgClosure *)a,&MUT_ARR_PTRS_FROZEN_info); \
580 #define unsafeFreezzeByteArrayzh(r,a) r=(a)
581 #define unsafeThawByteArrayzh(r,a) r=(a)
583 EF_(unsafeThawArrayzh_fast);
585 #define sizzeofByteArrayzh(r,a) \
586 r = (((StgArrWords *)(a))->words * sizeof(W_))
587 #define sizzeofMutableByteArrayzh(r,a) \
588 r = (((StgArrWords *)(a))->words * sizeof(W_))
590 /* and the out-of-line ones... */
592 EF_(newCharArrayzh_fast);
593 EF_(newIntArrayzh_fast);
594 EF_(newWordArrayzh_fast);
595 EF_(newAddrArrayzh_fast);
596 EF_(newFloatArrayzh_fast);
597 EF_(newDoubleArrayzh_fast);
598 EF_(newStablePtrArrayzh_fast);
599 EF_(newArrayzh_fast);
601 /* encoding and decoding of floats/doubles. */
603 /* We only support IEEE floating point format */
604 #include "ieee-flpt.h"
606 /* The decode operations are out-of-line because they need to allocate
609 #ifdef FLOATS_AS_DOUBLES
610 #define decodeFloatzh_fast decodeDoublezh_fast
612 EF_(decodeFloatzh_fast);
615 EF_(decodeDoublezh_fast);
617 /* grimy low-level support functions defined in StgPrimFloat.c */
619 extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
620 extern StgDouble __int_encodeDouble (I_ j, I_ e);
621 #ifndef FLOATS_AS_DOUBLES
622 extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
623 extern StgFloat __int_encodeFloat (I_ j, I_ e);
625 extern void __decodeDouble (MP_INT *man, I_ *_exp, StgDouble dbl);
626 extern void __decodeFloat (MP_INT *man, I_ *_exp, StgFloat flt);
627 extern StgInt isDoubleNaN(StgDouble d);
628 extern StgInt isDoubleInfinite(StgDouble d);
629 extern StgInt isDoubleDenormalized(StgDouble d);
630 extern StgInt isDoubleNegativeZero(StgDouble d);
631 extern StgInt isFloatNaN(StgFloat f);
632 extern StgInt isFloatInfinite(StgFloat f);
633 extern StgInt isFloatDenormalized(StgFloat f);
634 extern StgInt isFloatNegativeZero(StgFloat f);
636 /* -----------------------------------------------------------------------------
639 newMutVar is out of line.
640 -------------------------------------------------------------------------- */
642 EF_(newMutVarzh_fast);
644 #define readMutVarzh(r,a) r=(P_)(((StgMutVar *)(a))->var)
645 #define writeMutVarzh(a,v) (P_)(((StgMutVar *)(a))->var)=(v)
646 #define sameMutVarzh(r,a,b) r=(I_)((a)==(b))
648 /* -----------------------------------------------------------------------------
651 All out of line, because they either allocate or may block.
652 -------------------------------------------------------------------------- */
653 #define sameMVarzh(r,a,b) r=(I_)((a)==(b))
655 /* Assume external decl of EMPTY_MVAR_info is in scope by now */
656 #define isEmptyMVarzh(r,a) r=(I_)((GET_INFO((StgMVar*)(a))) == &EMPTY_MVAR_info )
658 EF_(takeMVarzh_fast);
662 /* -----------------------------------------------------------------------------
664 -------------------------------------------------------------------------- */
666 EF_(waitReadzh_fast);
667 EF_(waitWritezh_fast);
670 /* -----------------------------------------------------------------------------
671 Primitive I/O, error-handling PrimOps
672 -------------------------------------------------------------------------- */
677 extern void stg_exit(I_ n) __attribute__ ((noreturn));
679 /* -----------------------------------------------------------------------------
680 Stable Name / Stable Pointer PrimOps
681 -------------------------------------------------------------------------- */
685 EF_(makeStableNamezh_fast);
687 #define stableNameToIntzh(r,s) (r = ((StgStableName *)s)->sn)
689 #define eqStableNamezh(r,sn1,sn2) \
690 (r = (((StgStableName *)sn1)->sn == ((StgStableName *)sn2)->sn))
692 #define makeStablePtrzh(r,a) \
693 r = RET_STGCALL1(StgStablePtr,getStablePtr,a)
695 #define deRefStablePtrzh(r,sp) do { \
696 ASSERT(stable_ptr_table[sp & ~STABLEPTR_WEIGHT_MASK].weight > 0); \
697 r = stable_ptr_table[sp & ~STABLEPTR_WEIGHT_MASK].addr; \
700 #define eqStablePtrzh(r,sp1,sp2) \
701 (r = ((sp1 & ~STABLEPTR_WEIGHT_MASK) == (sp2 & ~STABLEPTR_WEIGHT_MASK)))
705 /* -----------------------------------------------------------------------------
707 -------------------------------------------------------------------------- */
711 EF_(killThreadzh_fast);
714 #define myThreadIdzh(t) (t = CurrentTSO)
716 extern int cmp_thread(const StgTSO *tso1, const StgTSO *tso2);
718 /* Hmm, I'll think about these later. */
719 /* -----------------------------------------------------------------------------
721 -------------------------------------------------------------------------- */
723 /* warning: extremely non-referentially transparent, need to hide in
724 an appropriate monad.
726 ToDo: follow indirections.
729 #define reallyUnsafePtrEqualityzh(r,a,b) r=((StgPtr)(a) == (StgPtr)(b))
731 /* -----------------------------------------------------------------------------
732 Weak Pointer PrimOps.
733 -------------------------------------------------------------------------- */
738 EF_(finalizzeWeakzh_fast);
740 #define deRefWeakzh(code,val,w) \
741 if (((StgWeak *)w)->header.info == &WEAK_info) { \
743 val = (P_)((StgWeak *)w)->value; \
749 #define sameWeakzh(w1,w2) ((w1)==(w2))
753 /* -----------------------------------------------------------------------------
754 Foreign Object PrimOps.
755 -------------------------------------------------------------------------- */
759 #define ForeignObj_CLOSURE_DATA(c) (((StgForeignObj *)c)->data)
761 EF_(makeForeignObjzh_fast);
763 #define writeForeignObjzh(res,datum) \
764 (ForeignObj_CLOSURE_DATA(res) = (P_)(datum))
766 #define eqForeignObj(f1,f2) ((f1)==(f2))
770 /* -----------------------------------------------------------------------------
772 -------------------------------------------------------------------------- */
774 #define dataToTagzh(r,a) r=(GET_TAG(((StgClosure *)a)->header.info))
775 /* tagToEnum# is handled directly by the code generator. */
777 /* -----------------------------------------------------------------------------
778 Signal processing. Not really primops, but called directly from
780 -------------------------------------------------------------------------- */
782 #define STG_SIG_DFL (-1)
783 #define STG_SIG_IGN (-2)
784 #define STG_SIG_ERR (-3)
785 #define STG_SIG_HAN (-4)
787 extern StgInt sig_install (StgInt, StgInt, StgStablePtr, sigset_t *);
788 #define stg_sig_default(sig,mask) sig_install(sig,STG_SIG_DFL,0,(sigset_t *)mask)
789 #define stg_sig_ignore(sig,mask) sig_install(sig,STG_SIG_IGN,0,(sigset_t *)mask)
790 #define stg_sig_catch(sig,ptr,mask) sig_install(sig,STG_SIG_HAN,ptr,(sigset_t *)mask)