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Consolidate Linux truncate implementations
[glibc.git] / stdlib / longlong.h
blob5cbc410fb035f7e89212c0661c41f82454469e35
1 /* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
2 Copyright (C) 1991-2016 Free Software Foundation, Inc.
3
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 In addition to the permissions in the GNU Lesser General Public
12 License, the Free Software Foundation gives you unlimited
13 permission to link the compiled version of this file into
14 combinations with other programs, and to distribute those
15 combinations without any restriction coming from the use of this
16 file. (The Lesser General Public License restrictions do apply in
17 other respects; for example, they cover modification of the file,
18 and distribution when not linked into a combine executable.)
19
20 The GNU C Library is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 Lesser General Public License for more details.
24
25 You should have received a copy of the GNU Lesser General Public
26 License along with the GNU C Library; if not, see
27 <http://www.gnu.org/licenses/>. */
28
29 /* You have to define the following before including this file:
30
31 UWtype -- An unsigned type, default type for operations (typically a "word")
32 UHWtype -- An unsigned type, at least half the size of UWtype.
33 UDWtype -- An unsigned type, at least twice as large a UWtype
34 W_TYPE_SIZE -- size in bits of UWtype
35
36 UQItype -- Unsigned 8 bit type.
37 SItype, USItype -- Signed and unsigned 32 bit types.
38 DItype, UDItype -- Signed and unsigned 64 bit types.
39
40 On a 32 bit machine UWtype should typically be USItype;
41 on a 64 bit machine, UWtype should typically be UDItype. */
42
43 #define __BITS4 (W_TYPE_SIZE / 4)
44 #define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
45 #define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
46 #define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
47
48 #ifndef W_TYPE_SIZE
49 #define W_TYPE_SIZE 32
50 #define UWtype USItype
51 #define UHWtype USItype
52 #define UDWtype UDItype
53 #endif
54
55 /* Used in glibc only. */
56 #ifndef attribute_hidden
57 #define attribute_hidden
58 #endif
59
60 extern const UQItype __clz_tab[256] attribute_hidden;
61
62 /* Define auxiliary asm macros.
63
64 1) umul_ppmm(high_prod, low_prod, multiplier, multiplicand) multiplies two
65 UWtype integers MULTIPLIER and MULTIPLICAND, and generates a two UWtype
66 word product in HIGH_PROD and LOW_PROD.
67
68 2) __umulsidi3(a,b) multiplies two UWtype integers A and B, and returns a
69 UDWtype product. This is just a variant of umul_ppmm.
70
71 3) udiv_qrnnd(quotient, remainder, high_numerator, low_numerator,
72 denominator) divides a UDWtype, composed by the UWtype integers
73 HIGH_NUMERATOR and LOW_NUMERATOR, by DENOMINATOR and places the quotient
74 in QUOTIENT and the remainder in REMAINDER. HIGH_NUMERATOR must be less
75 than DENOMINATOR for correct operation. If, in addition, the most
76 significant bit of DENOMINATOR must be 1, then the pre-processor symbol
77 UDIV_NEEDS_NORMALIZATION is defined to 1.
78
79 4) sdiv_qrnnd(quotient, remainder, high_numerator, low_numerator,
80 denominator). Like udiv_qrnnd but the numbers are signed. The quotient
81 is rounded towards 0.
82
83 5) count_leading_zeros(count, x) counts the number of zero-bits from the
84 msb to the first nonzero bit in the UWtype X. This is the number of
85 steps X needs to be shifted left to set the msb. Undefined for X == 0,
86 unless the symbol COUNT_LEADING_ZEROS_0 is defined to some value.
87
88 6) count_trailing_zeros(count, x) like count_leading_zeros, but counts
89 from the least significant end.
90
91 7) add_ssaaaa(high_sum, low_sum, high_addend_1, low_addend_1,
92 high_addend_2, low_addend_2) adds two UWtype integers, composed by
93 HIGH_ADDEND_1 and LOW_ADDEND_1, and HIGH_ADDEND_2 and LOW_ADDEND_2
94 respectively. The result is placed in HIGH_SUM and LOW_SUM. Overflow
95 (i.e. carry out) is not stored anywhere, and is lost.
96
97 8) sub_ddmmss(high_difference, low_difference, high_minuend, low_minuend,
98 high_subtrahend, low_subtrahend) subtracts two two-word UWtype integers,
99 composed by HIGH_MINUEND_1 and LOW_MINUEND_1, and HIGH_SUBTRAHEND_2 and
100 LOW_SUBTRAHEND_2 respectively. The result is placed in HIGH_DIFFERENCE
101 and LOW_DIFFERENCE. Overflow (i.e. carry out) is not stored anywhere,
102 and is lost.
103
104 If any of these macros are left undefined for a particular CPU,
105 C macros are used. */
106
107 /* The CPUs come in alphabetical order below.
108
109 Please add support for more CPUs here, or improve the current support
110 for the CPUs below!
111 (E.g. WE32100, IBM360.) */
112
113 #if defined (__GNUC__) && !defined (NO_ASM)
114
115 /* We sometimes need to clobber "cc" with gcc2, but that would not be
116 understood by gcc1. Use cpp to avoid major code duplication. */
117 #if __GNUC__ < 2
118 #define __CLOBBER_CC
119 #define __AND_CLOBBER_CC
120 #else /* __GNUC__ >= 2 */
121 #define __CLOBBER_CC : "cc"
122 #define __AND_CLOBBER_CC , "cc"
123 #endif /* __GNUC__ < 2 */
124
125 #if defined (__aarch64__)
126
127 #if W_TYPE_SIZE == 32
128 #define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
129 #define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
130 #define COUNT_LEADING_ZEROS_0 32
131 #endif /* W_TYPE_SIZE == 32 */
132
133 #if W_TYPE_SIZE == 64
134 #define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clzll (X))
135 #define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctzll (X))
136 #define COUNT_LEADING_ZEROS_0 64
137 #endif /* W_TYPE_SIZE == 64 */
138
139 #endif /* __aarch64__ */
140
141 #if defined (__alpha) && W_TYPE_SIZE == 64
142 /* There is a bug in g++ before version 5 that
143 errors on __builtin_alpha_umulh. */
144 #if !defined(__cplusplus) || __GNUC__ >= 5
145 #define umul_ppmm(ph, pl, m0, m1) \
146 do { \
147 UDItype __m0 = (m0), __m1 = (m1); \
148 (ph) = __builtin_alpha_umulh (__m0, __m1); \
149 (pl) = __m0 * __m1; \
150 } while (0)
151 #define UMUL_TIME 46
152 #endif /* !c++ */
153 #ifndef LONGLONG_STANDALONE
154 #define udiv_qrnnd(q, r, n1, n0, d) \
155 do { UDItype __r; \
156 (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \
157 (r) = __r; \
158 } while (0)
159 extern UDItype __udiv_qrnnd (UDItype *, UDItype, UDItype, UDItype);
160 #define UDIV_TIME 220
161 #endif /* LONGLONG_STANDALONE */
162 #ifdef __alpha_cix__
163 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzl (X))
164 #define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzl (X))
165 #define COUNT_LEADING_ZEROS_0 64
166 #else
167 #define count_leading_zeros(COUNT,X) \
168 do { \
169 UDItype __xr = (X), __t, __a; \
170 __t = __builtin_alpha_cmpbge (0, __xr); \
171 __a = __clz_tab[__t ^ 0xff] - 1; \
172 __t = __builtin_alpha_extbl (__xr, __a); \
173 (COUNT) = 64 - (__clz_tab[__t] + __a*8); \
174 } while (0)
175 #define count_trailing_zeros(COUNT,X) \
176 do { \
177 UDItype __xr = (X), __t, __a; \
178 __t = __builtin_alpha_cmpbge (0, __xr); \
179 __t = ~__t & -~__t; \
180 __a = ((__t & 0xCC) != 0) * 2; \
181 __a += ((__t & 0xF0) != 0) * 4; \
182 __a += ((__t & 0xAA) != 0); \
183 __t = __builtin_alpha_extbl (__xr, __a); \
184 __a <<= 3; \
185 __t &= -__t; \
186 __a += ((__t & 0xCC) != 0) * 2; \
187 __a += ((__t & 0xF0) != 0) * 4; \
188 __a += ((__t & 0xAA) != 0); \
189 (COUNT) = __a; \
190 } while (0)
191 #endif /* __alpha_cix__ */
192 #endif /* __alpha */
193
194 #if defined (__arc__) && W_TYPE_SIZE == 32
195 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
196 __asm__ ("add.f %1, %4, %5\n\tadc %0, %2, %3" \
197 : "=r" ((USItype) (sh)), \
198 "=&r" ((USItype) (sl)) \
199 : "%r" ((USItype) (ah)), \
200 "rIJ" ((USItype) (bh)), \
201 "%r" ((USItype) (al)), \
202 "rIJ" ((USItype) (bl)))
203 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
204 __asm__ ("sub.f %1, %4, %5\n\tsbc %0, %2, %3" \
205 : "=r" ((USItype) (sh)), \
206 "=&r" ((USItype) (sl)) \
207 : "r" ((USItype) (ah)), \
208 "rIJ" ((USItype) (bh)), \
209 "r" ((USItype) (al)), \
210 "rIJ" ((USItype) (bl)))
211
212 #define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
213 #ifdef __ARC_NORM__
214 #define count_leading_zeros(count, x) \
215 do \
216 { \
217 SItype c_; \
218 \
219 __asm__ ("norm.f\t%0,%1\n\tmov.mi\t%0,-1" : "=r" (c_) : "r" (x) : "cc");\
220 (count) = c_ + 1; \
221 } \
222 while (0)
223 #define COUNT_LEADING_ZEROS_0 32
224 #endif
225 #endif
226
227 #if defined (__arm__) && (defined (__thumb2__) || !defined (__thumb__)) \
228 && W_TYPE_SIZE == 32
229 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
230 __asm__ ("adds %1, %4, %5\n\tadc %0, %2, %3" \
231 : "=r" ((USItype) (sh)), \
232 "=&r" ((USItype) (sl)) \
233 : "%r" ((USItype) (ah)), \
234 "rI" ((USItype) (bh)), \
235 "%r" ((USItype) (al)), \
236 "rI" ((USItype) (bl)) __CLOBBER_CC)
237 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
238 __asm__ ("subs %1, %4, %5\n\tsbc %0, %2, %3" \
239 : "=r" ((USItype) (sh)), \
240 "=&r" ((USItype) (sl)) \
241 : "r" ((USItype) (ah)), \
242 "rI" ((USItype) (bh)), \
243 "r" ((USItype) (al)), \
244 "rI" ((USItype) (bl)) __CLOBBER_CC)
245 # if defined(__ARM_ARCH_2__) || defined(__ARM_ARCH_2A__) \
246 || defined(__ARM_ARCH_3__)
247 # define umul_ppmm(xh, xl, a, b) \
248 do { \
249 register USItype __t0, __t1, __t2; \
250 __asm__ ("%@ Inlined umul_ppmm\n" \
251 " mov %2, %5, lsr #16\n" \
252 " mov %0, %6, lsr #16\n" \
253 " bic %3, %5, %2, lsl #16\n" \
254 " bic %4, %6, %0, lsl #16\n" \
255 " mul %1, %3, %4\n" \
256 " mul %4, %2, %4\n" \
257 " mul %3, %0, %3\n" \
258 " mul %0, %2, %0\n" \
259 " adds %3, %4, %3\n" \
260 " addcs %0, %0, #65536\n" \
261 " adds %1, %1, %3, lsl #16\n" \
262 " adc %0, %0, %3, lsr #16" \
263 : "=&r" ((USItype) (xh)), \
264 "=r" ((USItype) (xl)), \
265 "=&r" (__t0), "=&r" (__t1), "=r" (__t2) \
266 : "r" ((USItype) (a)), \
267 "r" ((USItype) (b)) __CLOBBER_CC ); \
268 } while (0)
269 # define UMUL_TIME 20
270 # else
271 # define umul_ppmm(xh, xl, a, b) \
272 do { \
273 /* Generate umull, under compiler control. */ \
274 register UDItype __t0 = (UDItype)(USItype)(a) * (USItype)(b); \
275 (xl) = (USItype)__t0; \
276 (xh) = (USItype)(__t0 >> 32); \
277 } while (0)
278 # define UMUL_TIME 3
279 # endif
280 # define UDIV_TIME 100
281 #endif /* __arm__ */
282
283 #if defined(__arm__)
284 /* Let gcc decide how best to implement count_leading_zeros. */
285 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
286 #define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctz (X))
287 #define COUNT_LEADING_ZEROS_0 32
288 #endif
289
290 #if defined (__AVR__)
291
292 #if W_TYPE_SIZE == 16
293 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
294 #define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctz (X))
295 #define COUNT_LEADING_ZEROS_0 16
296 #endif /* W_TYPE_SIZE == 16 */
297
298 #if W_TYPE_SIZE == 32
299 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzl (X))
300 #define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzl (X))
301 #define COUNT_LEADING_ZEROS_0 32
302 #endif /* W_TYPE_SIZE == 32 */
303
304 #if W_TYPE_SIZE == 64
305 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzll (X))
306 #define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzll (X))
307 #define COUNT_LEADING_ZEROS_0 64
308 #endif /* W_TYPE_SIZE == 64 */
309
310 #endif /* defined (__AVR__) */
311
312 #if defined (__CRIS__)
313
314 #if __CRIS_arch_version >= 3
315 #define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
316 #define COUNT_LEADING_ZEROS_0 32
317 #endif /* __CRIS_arch_version >= 3 */
318
319 #if __CRIS_arch_version >= 8
320 #define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
321 #endif /* __CRIS_arch_version >= 8 */
322
323 #if __CRIS_arch_version >= 10
324 #define __umulsidi3(u,v) ((UDItype)(USItype) (u) * (UDItype)(USItype) (v))
325 #else
326 #define __umulsidi3 __umulsidi3
327 extern UDItype __umulsidi3 (USItype, USItype);
328 #endif /* __CRIS_arch_version >= 10 */
329
330 #define umul_ppmm(w1, w0, u, v) \
331 do { \
332 UDItype __x = __umulsidi3 (u, v); \
333 (w0) = (USItype) (__x); \
334 (w1) = (USItype) (__x >> 32); \
335 } while (0)
336
337 /* FIXME: defining add_ssaaaa and sub_ddmmss should be advantageous for
338 DFmode ("double" intrinsics, avoiding two of the three insns handling
339 carry), but defining them as open-code C composing and doing the
340 operation in DImode (UDImode) shows that the DImode needs work:
341 register pressure from requiring neighboring registers and the
342 traffic to and from them come to dominate, in the 4.7 series. */
343
344 #endif /* defined (__CRIS__) */
345
346 #if defined (__hppa) && W_TYPE_SIZE == 32
347 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
348 __asm__ ("add %4,%5,%1\n\taddc %2,%3,%0" \
349 : "=r" ((USItype) (sh)), \
350 "=&r" ((USItype) (sl)) \
351 : "%rM" ((USItype) (ah)), \
352 "rM" ((USItype) (bh)), \
353 "%rM" ((USItype) (al)), \
354 "rM" ((USItype) (bl)))
355 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
356 __asm__ ("sub %4,%5,%1\n\tsubb %2,%3,%0" \
357 : "=r" ((USItype) (sh)), \
358 "=&r" ((USItype) (sl)) \
359 : "rM" ((USItype) (ah)), \
360 "rM" ((USItype) (bh)), \
361 "rM" ((USItype) (al)), \
362 "rM" ((USItype) (bl)))
363 #if defined (_PA_RISC1_1)
364 #define umul_ppmm(w1, w0, u, v) \
365 do { \
366 union \
367 { \
368 UDItype __f; \
369 struct {USItype __w1, __w0;} __w1w0; \
370 } __t; \
371 __asm__ ("xmpyu %1,%2,%0" \
372 : "=x" (__t.__f) \
373 : "x" ((USItype) (u)), \
374 "x" ((USItype) (v))); \
375 (w1) = __t.__w1w0.__w1; \
376 (w0) = __t.__w1w0.__w0; \
377 } while (0)
378 #define UMUL_TIME 8
379 #else
380 #define UMUL_TIME 30
381 #endif
382 #define UDIV_TIME 40
383 #define count_leading_zeros(count, x) \
384 do { \
385 USItype __tmp; \
386 __asm__ ( \
387 "ldi 1,%0\n" \
388 " extru,= %1,15,16,%%r0 ; Bits 31..16 zero?\n" \
389 " extru,tr %1,15,16,%1 ; No. Shift down, skip add.\n"\
390 " ldo 16(%0),%0 ; Yes. Perform add.\n" \
391 " extru,= %1,23,8,%%r0 ; Bits 15..8 zero?\n" \
392 " extru,tr %1,23,8,%1 ; No. Shift down, skip add.\n"\
393 " ldo 8(%0),%0 ; Yes. Perform add.\n" \
394 " extru,= %1,27,4,%%r0 ; Bits 7..4 zero?\n" \
395 " extru,tr %1,27,4,%1 ; No. Shift down, skip add.\n"\
396 " ldo 4(%0),%0 ; Yes. Perform add.\n" \
397 " extru,= %1,29,2,%%r0 ; Bits 3..2 zero?\n" \
398 " extru,tr %1,29,2,%1 ; No. Shift down, skip add.\n"\
399 " ldo 2(%0),%0 ; Yes. Perform add.\n" \
400 " extru %1,30,1,%1 ; Extract bit 1.\n" \
401 " sub %0,%1,%0 ; Subtract it.\n" \
402 : "=r" (count), "=r" (__tmp) : "1" (x)); \
403 } while (0)
404 #endif
405
406 #if (defined (__i370__) || defined (__s390__) || defined (__mvs__)) && W_TYPE_SIZE == 32
407 #if !defined (__zarch__)
408 #define smul_ppmm(xh, xl, m0, m1) \
409 do { \
410 union {DItype __ll; \
411 struct {USItype __h, __l;} __i; \
412 } __x; \
413 __asm__ ("lr %N0,%1\n\tmr %0,%2" \
414 : "=&r" (__x.__ll) \
415 : "r" (m0), "r" (m1)); \
416 (xh) = __x.__i.__h; (xl) = __x.__i.__l; \
417 } while (0)
418 #define sdiv_qrnnd(q, r, n1, n0, d) \
419 do { \
420 union {DItype __ll; \
421 struct {USItype __h, __l;} __i; \
422 } __x; \
423 __x.__i.__h = n1; __x.__i.__l = n0; \
424 __asm__ ("dr %0,%2" \
425 : "=r" (__x.__ll) \
426 : "0" (__x.__ll), "r" (d)); \
427 (q) = __x.__i.__l; (r) = __x.__i.__h; \
428 } while (0)
429 #else
430 #define smul_ppmm(xh, xl, m0, m1) \
431 do { \
432 register SItype __r0 __asm__ ("0"); \
433 register SItype __r1 __asm__ ("1") = (m0); \
434 \
435 __asm__ ("mr\t%%r0,%3" \
436 : "=r" (__r0), "=r" (__r1) \
437 : "r" (__r1), "r" (m1)); \
438 (xh) = __r0; (xl) = __r1; \
439 } while (0)
440
441 #define sdiv_qrnnd(q, r, n1, n0, d) \
442 do { \
443 register SItype __r0 __asm__ ("0") = (n1); \
444 register SItype __r1 __asm__ ("1") = (n0); \
445 \
446 __asm__ ("dr\t%%r0,%4" \
447 : "=r" (__r0), "=r" (__r1) \
448 : "r" (__r0), "r" (__r1), "r" (d)); \
449 (q) = __r1; (r) = __r0; \
450 } while (0)
451 #endif /* __zarch__ */
452 #endif
453
454 #if (defined (__i386__) || defined (__i486__)) && W_TYPE_SIZE == 32
455 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
456 __asm__ ("add{l} {%5,%1|%1,%5}\n\tadc{l} {%3,%0|%0,%3}" \
457 : "=r" ((USItype) (sh)), \
458 "=&r" ((USItype) (sl)) \
459 : "%0" ((USItype) (ah)), \
460 "g" ((USItype) (bh)), \
461 "%1" ((USItype) (al)), \
462 "g" ((USItype) (bl)))
463 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
464 __asm__ ("sub{l} {%5,%1|%1,%5}\n\tsbb{l} {%3,%0|%0,%3}" \
465 : "=r" ((USItype) (sh)), \
466 "=&r" ((USItype) (sl)) \
467 : "0" ((USItype) (ah)), \
468 "g" ((USItype) (bh)), \
469 "1" ((USItype) (al)), \
470 "g" ((USItype) (bl)))
471 #define umul_ppmm(w1, w0, u, v) \
472 __asm__ ("mul{l} %3" \
473 : "=a" ((USItype) (w0)), \
474 "=d" ((USItype) (w1)) \
475 : "%0" ((USItype) (u)), \
476 "rm" ((USItype) (v)))
477 #define udiv_qrnnd(q, r, n1, n0, dv) \
478 __asm__ ("div{l} %4" \
479 : "=a" ((USItype) (q)), \
480 "=d" ((USItype) (r)) \
481 : "0" ((USItype) (n0)), \
482 "1" ((USItype) (n1)), \
483 "rm" ((USItype) (dv)))
484 #define count_leading_zeros(count, x) ((count) = __builtin_clz (x))
485 #define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
486 #define UMUL_TIME 40
487 #define UDIV_TIME 40
488 #endif /* 80x86 */
489
490 #if defined (__x86_64__) && W_TYPE_SIZE == 64
491 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
492 __asm__ ("add{q} {%5,%1|%1,%5}\n\tadc{q} {%3,%0|%0,%3}" \
493 : "=r" ((UDItype) (sh)), \
494 "=&r" ((UDItype) (sl)) \
495 : "%0" ((UDItype) (ah)), \
496 "rme" ((UDItype) (bh)), \
497 "%1" ((UDItype) (al)), \
498 "rme" ((UDItype) (bl)))
499 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
500 __asm__ ("sub{q} {%5,%1|%1,%5}\n\tsbb{q} {%3,%0|%0,%3}" \
501 : "=r" ((UDItype) (sh)), \
502 "=&r" ((UDItype) (sl)) \
503 : "0" ((UDItype) (ah)), \
504 "rme" ((UDItype) (bh)), \
505 "1" ((UDItype) (al)), \
506 "rme" ((UDItype) (bl)))
507 #define umul_ppmm(w1, w0, u, v) \
508 __asm__ ("mul{q} %3" \
509 : "=a" ((UDItype) (w0)), \
510 "=d" ((UDItype) (w1)) \
511 : "%0" ((UDItype) (u)), \
512 "rm" ((UDItype) (v)))
513 #define udiv_qrnnd(q, r, n1, n0, dv) \
514 __asm__ ("div{q} %4" \
515 : "=a" ((UDItype) (q)), \
516 "=d" ((UDItype) (r)) \
517 : "0" ((UDItype) (n0)), \
518 "1" ((UDItype) (n1)), \
519 "rm" ((UDItype) (dv)))
520 #define count_leading_zeros(count, x) ((count) = __builtin_clzll (x))
521 #define count_trailing_zeros(count, x) ((count) = __builtin_ctzll (x))
522 #define UMUL_TIME 40
523 #define UDIV_TIME 40
524 #endif /* x86_64 */
525
526 #if defined (__i960__) && W_TYPE_SIZE == 32
527 #define umul_ppmm(w1, w0, u, v) \
528 ({union {UDItype __ll; \
529 struct {USItype __l, __h;} __i; \
530 } __xx; \
531 __asm__ ("emul %2,%1,%0" \
532 : "=d" (__xx.__ll) \
533 : "%dI" ((USItype) (u)), \
534 "dI" ((USItype) (v))); \
535 (w1) = __xx.__i.__h; (w0) = __xx.__i.__l;})
536 #define __umulsidi3(u, v) \
537 ({UDItype __w; \
538 __asm__ ("emul %2,%1,%0" \
539 : "=d" (__w) \
540 : "%dI" ((USItype) (u)), \
541 "dI" ((USItype) (v))); \
542 __w; })
543 #endif /* __i960__ */
544
545 #if defined (__ia64) && W_TYPE_SIZE == 64
546 /* This form encourages gcc (pre-release 3.4 at least) to emit predicated
547 "sub r=r,r" and "sub r=r,r,1", giving a 2 cycle latency. The generic
548 code using "al<bl" arithmetically comes out making an actual 0 or 1 in a
549 register, which takes an extra cycle. */
550 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
551 do { \
552 UWtype __x; \
553 __x = (al) - (bl); \
554 if ((al) < (bl)) \
555 (sh) = (ah) - (bh) - 1; \
556 else \
557 (sh) = (ah) - (bh); \
558 (sl) = __x; \
559 } while (0)
560
561 /* Do both product parts in assembly, since that gives better code with
562 all gcc versions. Some callers will just use the upper part, and in
563 that situation we waste an instruction, but not any cycles. */
564 #define umul_ppmm(ph, pl, m0, m1) \
565 __asm__ ("xma.hu %0 = %2, %3, f0\n\txma.l %1 = %2, %3, f0" \
566 : "=&f" (ph), "=f" (pl) \
567 : "f" (m0), "f" (m1))
568 #define count_leading_zeros(count, x) \
569 do { \
570 UWtype _x = (x), _y, _a, _c; \
571 __asm__ ("mux1 %0 = %1, @rev" : "=r" (_y) : "r" (_x)); \
572 __asm__ ("czx1.l %0 = %1" : "=r" (_a) : "r" (-_y | _y)); \
573 _c = (_a - 1) << 3; \
574 _x >>= _c; \
575 if (_x >= 1 << 4) \
576 _x >>= 4, _c += 4; \
577 if (_x >= 1 << 2) \
578 _x >>= 2, _c += 2; \
579 _c += _x >> 1; \
580 (count) = W_TYPE_SIZE - 1 - _c; \
581 } while (0)
582 /* similar to what gcc does for __builtin_ffs, but 0 based rather than 1
583 based, and we don't need a special case for x==0 here */
584 #define count_trailing_zeros(count, x) \
585 do { \
586 UWtype __ctz_x = (x); \
587 __asm__ ("popcnt %0 = %1" \
588 : "=r" (count) \
589 : "r" ((__ctz_x-1) & ~__ctz_x)); \
590 } while (0)
591 #define UMUL_TIME 14
592 #endif
593
594 #if defined (__M32R__) && W_TYPE_SIZE == 32
595 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
596 /* The cmp clears the condition bit. */ \
597 __asm__ ("cmp %0,%0\n\taddx %1,%5\n\taddx %0,%3" \
598 : "=r" ((USItype) (sh)), \
599 "=&r" ((USItype) (sl)) \
600 : "0" ((USItype) (ah)), \
601 "r" ((USItype) (bh)), \
602 "1" ((USItype) (al)), \
603 "r" ((USItype) (bl)) \
604 : "cbit")
605 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
606 /* The cmp clears the condition bit. */ \
607 __asm__ ("cmp %0,%0\n\tsubx %1,%5\n\tsubx %0,%3" \
608 : "=r" ((USItype) (sh)), \
609 "=&r" ((USItype) (sl)) \
610 : "0" ((USItype) (ah)), \
611 "r" ((USItype) (bh)), \
612 "1" ((USItype) (al)), \
613 "r" ((USItype) (bl)) \
614 : "cbit")
615 #endif /* __M32R__ */
616
617 #if defined (__mc68000__) && W_TYPE_SIZE == 32
618 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
619 __asm__ ("add%.l %5,%1\n\taddx%.l %3,%0" \
620 : "=d" ((USItype) (sh)), \
621 "=&d" ((USItype) (sl)) \
622 : "%0" ((USItype) (ah)), \
623 "d" ((USItype) (bh)), \
624 "%1" ((USItype) (al)), \
625 "g" ((USItype) (bl)))
626 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
627 __asm__ ("sub%.l %5,%1\n\tsubx%.l %3,%0" \
628 : "=d" ((USItype) (sh)), \
629 "=&d" ((USItype) (sl)) \
630 : "0" ((USItype) (ah)), \
631 "d" ((USItype) (bh)), \
632 "1" ((USItype) (al)), \
633 "g" ((USItype) (bl)))
634
635 /* The '020, '030, '040, '060 and CPU32 have 32x32->64 and 64/32->32q-32r. */
636 #if (defined (__mc68020__) && !defined (__mc68060__))
637 #define umul_ppmm(w1, w0, u, v) \
638 __asm__ ("mulu%.l %3,%1:%0" \
639 : "=d" ((USItype) (w0)), \
640 "=d" ((USItype) (w1)) \
641 : "%0" ((USItype) (u)), \
642 "dmi" ((USItype) (v)))
643 #define UMUL_TIME 45
644 #define udiv_qrnnd(q, r, n1, n0, d) \
645 __asm__ ("divu%.l %4,%1:%0" \
646 : "=d" ((USItype) (q)), \
647 "=d" ((USItype) (r)) \
648 : "0" ((USItype) (n0)), \
649 "1" ((USItype) (n1)), \
650 "dmi" ((USItype) (d)))
651 #define UDIV_TIME 90
652 #define sdiv_qrnnd(q, r, n1, n0, d) \
653 __asm__ ("divs%.l %4,%1:%0" \
654 : "=d" ((USItype) (q)), \
655 "=d" ((USItype) (r)) \
656 : "0" ((USItype) (n0)), \
657 "1" ((USItype) (n1)), \
658 "dmi" ((USItype) (d)))
659
660 #elif defined (__mcoldfire__) /* not mc68020 */
661
662 #define umul_ppmm(xh, xl, a, b) \
663 __asm__ ("| Inlined umul_ppmm\n" \
664 " move%.l %2,%/d0\n" \
665 " move%.l %3,%/d1\n" \
666 " move%.l %/d0,%/d2\n" \
667 " swap %/d0\n" \
668 " move%.l %/d1,%/d3\n" \
669 " swap %/d1\n" \
670 " move%.w %/d2,%/d4\n" \
671 " mulu %/d3,%/d4\n" \
672 " mulu %/d1,%/d2\n" \
673 " mulu %/d0,%/d3\n" \
674 " mulu %/d0,%/d1\n" \
675 " move%.l %/d4,%/d0\n" \
676 " clr%.w %/d0\n" \
677 " swap %/d0\n" \
678 " add%.l %/d0,%/d2\n" \
679 " add%.l %/d3,%/d2\n" \
680 " jcc 1f\n" \
681 " add%.l %#65536,%/d1\n" \
682 "1: swap %/d2\n" \
683 " moveq %#0,%/d0\n" \
684 " move%.w %/d2,%/d0\n" \
685 " move%.w %/d4,%/d2\n" \
686 " move%.l %/d2,%1\n" \
687 " add%.l %/d1,%/d0\n" \
688 " move%.l %/d0,%0" \
689 : "=g" ((USItype) (xh)), \
690 "=g" ((USItype) (xl)) \
691 : "g" ((USItype) (a)), \
692 "g" ((USItype) (b)) \
693 : "d0", "d1", "d2", "d3", "d4")
694 #define UMUL_TIME 100
695 #define UDIV_TIME 400
696 #else /* not ColdFire */
697 /* %/ inserts REGISTER_PREFIX, %# inserts IMMEDIATE_PREFIX. */
698 #define umul_ppmm(xh, xl, a, b) \
699 __asm__ ("| Inlined umul_ppmm\n" \
700 " move%.l %2,%/d0\n" \
701 " move%.l %3,%/d1\n" \
702 " move%.l %/d0,%/d2\n" \
703 " swap %/d0\n" \
704 " move%.l %/d1,%/d3\n" \
705 " swap %/d1\n" \
706 " move%.w %/d2,%/d4\n" \
707 " mulu %/d3,%/d4\n" \
708 " mulu %/d1,%/d2\n" \
709 " mulu %/d0,%/d3\n" \
710 " mulu %/d0,%/d1\n" \
711 " move%.l %/d4,%/d0\n" \
712 " eor%.w %/d0,%/d0\n" \
713 " swap %/d0\n" \
714 " add%.l %/d0,%/d2\n" \
715 " add%.l %/d3,%/d2\n" \
716 " jcc 1f\n" \
717 " add%.l %#65536,%/d1\n" \
718 "1: swap %/d2\n" \
719 " moveq %#0,%/d0\n" \
720 " move%.w %/d2,%/d0\n" \
721 " move%.w %/d4,%/d2\n" \
722 " move%.l %/d2,%1\n" \
723 " add%.l %/d1,%/d0\n" \
724 " move%.l %/d0,%0" \
725 : "=g" ((USItype) (xh)), \
726 "=g" ((USItype) (xl)) \
727 : "g" ((USItype) (a)), \
728 "g" ((USItype) (b)) \
729 : "d0", "d1", "d2", "d3", "d4")
730 #define UMUL_TIME 100
731 #define UDIV_TIME 400
732
733 #endif /* not mc68020 */
734
735 /* The '020, '030, '040 and '060 have bitfield insns.
736 cpu32 disguises as a 68020, but lacks them. */
737 #if defined (__mc68020__) && !defined (__mcpu32__)
738 #define count_leading_zeros(count, x) \
739 __asm__ ("bfffo %1{%b2:%b2},%0" \
740 : "=d" ((USItype) (count)) \
741 : "od" ((USItype) (x)), "n" (0))
742 /* Some ColdFire architectures have a ff1 instruction supported via
743 __builtin_clz. */
744 #elif defined (__mcfisaaplus__) || defined (__mcfisac__)
745 #define count_leading_zeros(count,x) ((count) = __builtin_clz (x))
746 #define COUNT_LEADING_ZEROS_0 32
747 #endif
748 #endif /* mc68000 */
749
750 #if defined (__m88000__) && W_TYPE_SIZE == 32
751 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
752 __asm__ ("addu.co %1,%r4,%r5\n\taddu.ci %0,%r2,%r3" \
753 : "=r" ((USItype) (sh)), \
754 "=&r" ((USItype) (sl)) \
755 : "%rJ" ((USItype) (ah)), \
756 "rJ" ((USItype) (bh)), \
757 "%rJ" ((USItype) (al)), \
758 "rJ" ((USItype) (bl)))
759 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
760 __asm__ ("subu.co %1,%r4,%r5\n\tsubu.ci %0,%r2,%r3" \
761 : "=r" ((USItype) (sh)), \
762 "=&r" ((USItype) (sl)) \
763 : "rJ" ((USItype) (ah)), \
764 "rJ" ((USItype) (bh)), \
765 "rJ" ((USItype) (al)), \
766 "rJ" ((USItype) (bl)))
767 #define count_leading_zeros(count, x) \
768 do { \
769 USItype __cbtmp; \
770 __asm__ ("ff1 %0,%1" \
771 : "=r" (__cbtmp) \
772 : "r" ((USItype) (x))); \
773 (count) = __cbtmp ^ 31; \
774 } while (0)
775 #define COUNT_LEADING_ZEROS_0 63 /* sic */
776 #if defined (__mc88110__)
777 #define umul_ppmm(wh, wl, u, v) \
778 do { \
779 union {UDItype __ll; \
780 struct {USItype __h, __l;} __i; \
781 } __xx; \
782 __asm__ ("mulu.d %0,%1,%2" \
783 : "=r" (__xx.__ll) \
784 : "r" ((USItype) (u)), \
785 "r" ((USItype) (v))); \
786 (wh) = __xx.__i.__h; \
787 (wl) = __xx.__i.__l; \
788 } while (0)
789 #define udiv_qrnnd(q, r, n1, n0, d) \
790 ({union {UDItype __ll; \
791 struct {USItype __h, __l;} __i; \
792 } __xx; \
793 USItype __q; \
794 __xx.__i.__h = (n1); __xx.__i.__l = (n0); \
795 __asm__ ("divu.d %0,%1,%2" \
796 : "=r" (__q) \
797 : "r" (__xx.__ll), \
798 "r" ((USItype) (d))); \
799 (r) = (n0) - __q * (d); (q) = __q; })
800 #define UMUL_TIME 5
801 #define UDIV_TIME 25
802 #else
803 #define UMUL_TIME 17
804 #define UDIV_TIME 150
805 #endif /* __mc88110__ */
806 #endif /* __m88000__ */
807
808 #if defined (__mn10300__)
809 # if defined (__AM33__)
810 # define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
811 # define umul_ppmm(w1, w0, u, v) \
812 asm("mulu %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v))
813 # define smul_ppmm(w1, w0, u, v) \
814 asm("mul %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v))
815 # else
816 # define umul_ppmm(w1, w0, u, v) \
817 asm("nop; nop; mulu %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v))
818 # define smul_ppmm(w1, w0, u, v) \
819 asm("nop; nop; mul %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v))
820 # endif
821 # define add_ssaaaa(sh, sl, ah, al, bh, bl) \
822 do { \
823 DWunion __s, __a, __b; \
824 __a.s.low = (al); __a.s.high = (ah); \
825 __b.s.low = (bl); __b.s.high = (bh); \
826 __s.ll = __a.ll + __b.ll; \
827 (sl) = __s.s.low; (sh) = __s.s.high; \
828 } while (0)
829 # define sub_ddmmss(sh, sl, ah, al, bh, bl) \
830 do { \
831 DWunion __s, __a, __b; \
832 __a.s.low = (al); __a.s.high = (ah); \
833 __b.s.low = (bl); __b.s.high = (bh); \
834 __s.ll = __a.ll - __b.ll; \
835 (sl) = __s.s.low; (sh) = __s.s.high; \
836 } while (0)
837 # define udiv_qrnnd(q, r, nh, nl, d) \
838 asm("divu %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh))
839 # define sdiv_qrnnd(q, r, nh, nl, d) \
840 asm("div %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh))
841 # define UMUL_TIME 3
842 # define UDIV_TIME 38
843 #endif
844
845 #if defined (__mips__) && W_TYPE_SIZE == 32
846 #define umul_ppmm(w1, w0, u, v) \
847 do { \
848 UDItype __x = (UDItype) (USItype) (u) * (USItype) (v); \
849 (w1) = (USItype) (__x >> 32); \
850 (w0) = (USItype) (__x); \
851 } while (0)
852 #define UMUL_TIME 10
853 #define UDIV_TIME 100
854
855 #if (__mips == 32 || __mips == 64) && ! defined (__mips16)
856 #define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
857 #define COUNT_LEADING_ZEROS_0 32
858 #endif
859 #endif /* __mips__ */
860
861 #if defined (__ns32000__) && W_TYPE_SIZE == 32
862 #define umul_ppmm(w1, w0, u, v) \
863 ({union {UDItype __ll; \
864 struct {USItype __l, __h;} __i; \
865 } __xx; \
866 __asm__ ("meid %2,%0" \
867 : "=g" (__xx.__ll) \
868 : "%0" ((USItype) (u)), \
869 "g" ((USItype) (v))); \
870 (w1) = __xx.__i.__h; (w0) = __xx.__i.__l;})
871 #define __umulsidi3(u, v) \
872 ({UDItype __w; \
873 __asm__ ("meid %2,%0" \
874 : "=g" (__w) \
875 : "%0" ((USItype) (u)), \
876 "g" ((USItype) (v))); \
877 __w; })
878 #define udiv_qrnnd(q, r, n1, n0, d) \
879 ({union {UDItype __ll; \
880 struct {USItype __l, __h;} __i; \
881 } __xx; \
882 __xx.__i.__h = (n1); __xx.__i.__l = (n0); \
883 __asm__ ("deid %2,%0" \
884 : "=g" (__xx.__ll) \
885 : "0" (__xx.__ll), \
886 "g" ((USItype) (d))); \
887 (r) = __xx.__i.__l; (q) = __xx.__i.__h; })
888 #define count_trailing_zeros(count,x) \
889 do { \
890 __asm__ ("ffsd %2,%0" \
891 : "=r" ((USItype) (count)) \
892 : "0" ((USItype) 0), \
893 "r" ((USItype) (x))); \
894 } while (0)
895 #endif /* __ns32000__ */
896
897 /* FIXME: We should test _IBMR2 here when we add assembly support for the
898 system vendor compilers.
899 FIXME: What's needed for gcc PowerPC VxWorks? __vxworks__ is not good
900 enough, since that hits ARM and m68k too. */
901 #if (defined (_ARCH_PPC) /* AIX */ \
902 || defined (__powerpc__) /* gcc */ \
903 || defined (__POWERPC__) /* BEOS */ \
904 || defined (__ppc__) /* Darwin */ \
905 || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */ \
906 || (defined (PPC) && defined (CPU_FAMILY) /* VxWorks */ \
907 && CPU_FAMILY == PPC) \
908 ) && W_TYPE_SIZE == 32
909 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
910 do { \
911 if (__builtin_constant_p (bh) && (bh) == 0) \
912 __asm__ ("add%I4c %1,%3,%4\n\taddze %0,%2" \
913 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
914 else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \
915 __asm__ ("add%I4c %1,%3,%4\n\taddme %0,%2" \
916 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
917 else \
918 __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3" \
919 : "=r" (sh), "=&r" (sl) \
920 : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl)); \
921 } while (0)
922 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
923 do { \
924 if (__builtin_constant_p (ah) && (ah) == 0) \
925 __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2" \
926 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
927 else if (__builtin_constant_p (ah) && (ah) == ~(USItype) 0) \
928 __asm__ ("subf%I3c %1,%4,%3\n\tsubfme %0,%2" \
929 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
930 else if (__builtin_constant_p (bh) && (bh) == 0) \
931 __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2" \
932 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
933 else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \
934 __asm__ ("subf%I3c %1,%4,%3\n\taddze %0,%2" \
935 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
936 else \
937 __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2" \
938 : "=r" (sh), "=&r" (sl) \
939 : "r" (ah), "r" (bh), "rI" (al), "r" (bl)); \
940 } while (0)
941 #define count_leading_zeros(count, x) \
942 __asm__ ("cntlzw %0,%1" : "=r" (count) : "r" (x))
943 #define COUNT_LEADING_ZEROS_0 32
944 #if defined (_ARCH_PPC) || defined (__powerpc__) || defined (__POWERPC__) \
945 || defined (__ppc__) \
946 || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */ \
947 || (defined (PPC) && defined (CPU_FAMILY) /* VxWorks */ \
948 && CPU_FAMILY == PPC)
949 #define umul_ppmm(ph, pl, m0, m1) \
950 do { \
951 USItype __m0 = (m0), __m1 = (m1); \
952 __asm__ ("mulhwu %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
953 (pl) = __m0 * __m1; \
954 } while (0)
955 #define UMUL_TIME 15
956 #define smul_ppmm(ph, pl, m0, m1) \
957 do { \
958 SItype __m0 = (m0), __m1 = (m1); \
959 __asm__ ("mulhw %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
960 (pl) = __m0 * __m1; \
961 } while (0)
962 #define SMUL_TIME 14
963 #define UDIV_TIME 120
964 #endif
965 #endif /* 32-bit POWER architecture variants. */
966
967 /* We should test _IBMR2 here when we add assembly support for the system
968 vendor compilers. */
969 #if (defined (_ARCH_PPC64) || defined (__powerpc64__)) && W_TYPE_SIZE == 64
970 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
971 do { \
972 if (__builtin_constant_p (bh) && (bh) == 0) \
973 __asm__ ("add%I4c %1,%3,%4\n\taddze %0,%2" \
974 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
975 else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0) \
976 __asm__ ("add%I4c %1,%3,%4\n\taddme %0,%2" \
977 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
978 else \
979 __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3" \
980 : "=r" (sh), "=&r" (sl) \
981 : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl)); \
982 } while (0)
983 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
984 do { \
985 if (__builtin_constant_p (ah) && (ah) == 0) \
986 __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2" \
987 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
988 else if (__builtin_constant_p (ah) && (ah) == ~(UDItype) 0) \
989 __asm__ ("subf%I3c %1,%4,%3\n\tsubfme %0,%2" \
990 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
991 else if (__builtin_constant_p (bh) && (bh) == 0) \
992 __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2" \
993 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
994 else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0) \
995 __asm__ ("subf%I3c %1,%4,%3\n\taddze %0,%2" \
996 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
997 else \
998 __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2" \
999 : "=r" (sh), "=&r" (sl) \
1000 : "r" (ah), "r" (bh), "rI" (al), "r" (bl)); \
1001 } while (0)
1002 #define count_leading_zeros(count, x) \
1003 __asm__ ("cntlzd %0,%1" : "=r" (count) : "r" (x))
1004 #define COUNT_LEADING_ZEROS_0 64
1005 #define umul_ppmm(ph, pl, m0, m1) \
1006 do { \
1007 UDItype __m0 = (m0), __m1 = (m1); \
1008 __asm__ ("mulhdu %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
1009 (pl) = __m0 * __m1; \
1010 } while (0)
1011 #define UMUL_TIME 15
1012 #define smul_ppmm(ph, pl, m0, m1) \
1013 do { \
1014 DItype __m0 = (m0), __m1 = (m1); \
1015 __asm__ ("mulhd %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
1016 (pl) = __m0 * __m1; \
1017 } while (0)
1018 #define SMUL_TIME 14 /* ??? */
1019 #define UDIV_TIME 120 /* ??? */
1020 #endif /* 64-bit PowerPC. */
1021
1022 #if defined (__ibm032__) /* RT/ROMP */ && W_TYPE_SIZE == 32
1023 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1024 __asm__ ("a %1,%5\n\tae %0,%3" \
1025 : "=r" ((USItype) (sh)), \
1026 "=&r" ((USItype) (sl)) \
1027 : "%0" ((USItype) (ah)), \
1028 "r" ((USItype) (bh)), \
1029 "%1" ((USItype) (al)), \
1030 "r" ((USItype) (bl)))
1031 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1032 __asm__ ("s %1,%5\n\tse %0,%3" \
1033 : "=r" ((USItype) (sh)), \
1034 "=&r" ((USItype) (sl)) \
1035 : "0" ((USItype) (ah)), \
1036 "r" ((USItype) (bh)), \
1037 "1" ((USItype) (al)), \
1038 "r" ((USItype) (bl)))
1039 #define umul_ppmm(ph, pl, m0, m1) \
1040 do { \
1041 USItype __m0 = (m0), __m1 = (m1); \
1042 __asm__ ( \
1043 "s r2,r2\n" \
1044 " mts r10,%2\n" \
1045 " m r2,%3\n" \
1046 " m r2,%3\n" \
1047 " m r2,%3\n" \
1048 " m r2,%3\n" \
1049 " m r2,%3\n" \
1050 " m r2,%3\n" \
1051 " m r2,%3\n" \
1052 " m r2,%3\n" \
1053 " m r2,%3\n" \
1054 " m r2,%3\n" \
1055 " m r2,%3\n" \
1056 " m r2,%3\n" \
1057 " m r2,%3\n" \
1058 " m r2,%3\n" \
1059 " m r2,%3\n" \
1060 " m r2,%3\n" \
1061 " cas %0,r2,r0\n" \
1062 " mfs r10,%1" \
1063 : "=r" ((USItype) (ph)), \
1064 "=r" ((USItype) (pl)) \
1065 : "%r" (__m0), \
1066 "r" (__m1) \
1067 : "r2"); \
1068 (ph) += ((((SItype) __m0 >> 31) & __m1) \
1069 + (((SItype) __m1 >> 31) & __m0)); \
1070 } while (0)
1071 #define UMUL_TIME 20
1072 #define UDIV_TIME 200
1073 #define count_leading_zeros(count, x) \
1074 do { \
1075 if ((x) >= 0x10000) \
1076 __asm__ ("clz %0,%1" \
1077 : "=r" ((USItype) (count)) \
1078 : "r" ((USItype) (x) >> 16)); \
1079 else \
1080 { \
1081 __asm__ ("clz %0,%1" \
1082 : "=r" ((USItype) (count)) \
1083 : "r" ((USItype) (x))); \
1084 (count) += 16; \
1085 } \
1086 } while (0)
1087 #endif
1088
1089 #if defined(__sh__) && (!defined (__SHMEDIA__) || !__SHMEDIA__) && W_TYPE_SIZE == 32
1090 #ifndef __sh1__
1091 #define umul_ppmm(w1, w0, u, v) \
1092 __asm__ ( \
1093 "dmulu.l %2,%3\n\tsts%M1 macl,%1\n\tsts%M0 mach,%0" \
1094 : "=r<" ((USItype)(w1)), \
1095 "=r<" ((USItype)(w0)) \
1096 : "r" ((USItype)(u)), \
1097 "r" ((USItype)(v)) \
1098 : "macl", "mach")
1099 #define UMUL_TIME 5
1100 #endif
1101
1102 /* This is the same algorithm as __udiv_qrnnd_c. */
1103 #define UDIV_NEEDS_NORMALIZATION 1
1104
1105 #ifdef __FDPIC__
1106 /* FDPIC needs a special version of the asm fragment to extract the
1107 code address from the function descriptor. __udiv_qrnnd_16 is
1108 assumed to be local and not to use the GOT, so loading r12 is
1109 not needed. */
1110 #define udiv_qrnnd(q, r, n1, n0, d) \
1111 do { \
1112 extern UWtype __udiv_qrnnd_16 (UWtype, UWtype) \
1113 __attribute__ ((visibility ("hidden"))); \
1114 /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ \
1115 __asm__ ( \
1116 "mov%M4 %4,r5\n" \
1117 " swap.w %3,r4\n" \
1118 " swap.w r5,r6\n" \
1119 " mov.l @%5,r2\n" \
1120 " jsr @r2\n" \
1121 " shll16 r6\n" \
1122 " swap.w r4,r4\n" \
1123 " mov.l @%5,r2\n" \
1124 " jsr @r2\n" \
1125 " swap.w r1,%0\n" \
1126 " or r1,%0" \
1127 : "=r" (q), "=&z" (r) \
1128 : "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
1129 : "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
1130 } while (0)
1131 #else
1132 #define udiv_qrnnd(q, r, n1, n0, d) \
1133 do { \
1134 extern UWtype __udiv_qrnnd_16 (UWtype, UWtype) \
1135 __attribute__ ((visibility ("hidden"))); \
1136 /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ \
1137 __asm__ ( \
1138 "mov%M4 %4,r5\n" \
1139 " swap.w %3,r4\n" \
1140 " swap.w r5,r6\n" \
1141 " jsr @%5\n" \
1142 " shll16 r6\n" \
1143 " swap.w r4,r4\n" \
1144 " jsr @%5\n" \
1145 " swap.w r1,%0\n" \
1146 " or r1,%0" \
1147 : "=r" (q), "=&z" (r) \
1148 : "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
1149 : "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
1150 } while (0)
1151 #endif /* __FDPIC__ */
1152
1153 #define UDIV_TIME 80
1154
1155 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1156 __asm__ ("clrt;subc %5,%1; subc %4,%0" \
1157 : "=r" (sh), "=r" (sl) \
1158 : "0" (ah), "1" (al), "r" (bh), "r" (bl) : "t")
1159
1160 #endif /* __sh__ */
1161
1162 #if defined (__SH5__) && defined (__SHMEDIA__) && __SHMEDIA__ && W_TYPE_SIZE == 32
1163 #define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
1164 #define count_leading_zeros(count, x) \
1165 do \
1166 { \
1167 UDItype x_ = (USItype)(x); \
1168 SItype c_; \
1169 \
1170 __asm__ ("nsb %1, %0" : "=r" (c_) : "r" (x_)); \
1171 (count) = c_ - 31; \
1172 } \
1173 while (0)
1174 #define COUNT_LEADING_ZEROS_0 32
1175 #endif
1176
1177 #if defined (__sparc__) && !defined (__arch64__) && !defined (__sparcv9) \
1178 && W_TYPE_SIZE == 32
1179 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1180 __asm__ ("addcc %r4,%5,%1\n\taddx %r2,%3,%0" \
1181 : "=r" ((USItype) (sh)), \
1182 "=&r" ((USItype) (sl)) \
1183 : "%rJ" ((USItype) (ah)), \
1184 "rI" ((USItype) (bh)), \
1185 "%rJ" ((USItype) (al)), \
1186 "rI" ((USItype) (bl)) \
1187 __CLOBBER_CC)
1188 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1189 __asm__ ("subcc %r4,%5,%1\n\tsubx %r2,%3,%0" \
1190 : "=r" ((USItype) (sh)), \
1191 "=&r" ((USItype) (sl)) \
1192 : "rJ" ((USItype) (ah)), \
1193 "rI" ((USItype) (bh)), \
1194 "rJ" ((USItype) (al)), \
1195 "rI" ((USItype) (bl)) \
1196 __CLOBBER_CC)
1197 #if defined (__sparc_v9__)
1198 #define umul_ppmm(w1, w0, u, v) \
1199 do { \
1200 register USItype __g1 asm ("g1"); \
1201 __asm__ ("umul\t%2,%3,%1\n\t" \
1202 "srlx\t%1, 32, %0" \
1203 : "=r" ((USItype) (w1)), \
1204 "=r" (__g1) \
1205 : "r" ((USItype) (u)), \
1206 "r" ((USItype) (v))); \
1207 (w0) = __g1; \
1208 } while (0)
1209 #define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
1210 __asm__ ("mov\t%2,%%y\n\t" \
1211 "udiv\t%3,%4,%0\n\t" \
1212 "umul\t%0,%4,%1\n\t" \
1213 "sub\t%3,%1,%1" \
1214 : "=&r" ((USItype) (__q)), \
1215 "=&r" ((USItype) (__r)) \
1216 : "r" ((USItype) (__n1)), \
1217 "r" ((USItype) (__n0)), \
1218 "r" ((USItype) (__d)))
1219 #else
1220 #if defined (__sparc_v8__)
1221 #define umul_ppmm(w1, w0, u, v) \
1222 __asm__ ("umul %2,%3,%1;rd %%y,%0" \
1223 : "=r" ((USItype) (w1)), \
1224 "=r" ((USItype) (w0)) \
1225 : "r" ((USItype) (u)), \
1226 "r" ((USItype) (v)))
1227 #define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
1228 __asm__ ("mov %2,%%y;nop;nop;nop;udiv %3,%4,%0;umul %0,%4,%1;sub %3,%1,%1"\
1229 : "=&r" ((USItype) (__q)), \
1230 "=&r" ((USItype) (__r)) \
1231 : "r" ((USItype) (__n1)), \
1232 "r" ((USItype) (__n0)), \
1233 "r" ((USItype) (__d)))
1234 #else
1235 #if defined (__sparclite__)
1236 /* This has hardware multiply but not divide. It also has two additional
1237 instructions scan (ffs from high bit) and divscc. */
1238 #define umul_ppmm(w1, w0, u, v) \
1239 __asm__ ("umul %2,%3,%1;rd %%y,%0" \
1240 : "=r" ((USItype) (w1)), \
1241 "=r" ((USItype) (w0)) \
1242 : "r" ((USItype) (u)), \
1243 "r" ((USItype) (v)))
1244 #define udiv_qrnnd(q, r, n1, n0, d) \
1245 __asm__ ("! Inlined udiv_qrnnd\n" \
1246 " wr %%g0,%2,%%y ! Not a delayed write for sparclite\n" \
1247 " tst %%g0\n" \
1248 " divscc %3,%4,%%g1\n" \
1249 " divscc %%g1,%4,%%g1\n" \
1250 " divscc %%g1,%4,%%g1\n" \
1251 " divscc %%g1,%4,%%g1\n" \
1252 " divscc %%g1,%4,%%g1\n" \
1253 " divscc %%g1,%4,%%g1\n" \
1254 " divscc %%g1,%4,%%g1\n" \
1255 " divscc %%g1,%4,%%g1\n" \
1256 " divscc %%g1,%4,%%g1\n" \
1257 " divscc %%g1,%4,%%g1\n" \
1258 " divscc %%g1,%4,%%g1\n" \
1259 " divscc %%g1,%4,%%g1\n" \
1260 " divscc %%g1,%4,%%g1\n" \
1261 " divscc %%g1,%4,%%g1\n" \
1262 " divscc %%g1,%4,%%g1\n" \
1263 " divscc %%g1,%4,%%g1\n" \
1264 " divscc %%g1,%4,%%g1\n" \
1265 " divscc %%g1,%4,%%g1\n" \
1266 " divscc %%g1,%4,%%g1\n" \
1267 " divscc %%g1,%4,%%g1\n" \
1268 " divscc %%g1,%4,%%g1\n" \
1269 " divscc %%g1,%4,%%g1\n" \
1270 " divscc %%g1,%4,%%g1\n" \
1271 " divscc %%g1,%4,%%g1\n" \
1272 " divscc %%g1,%4,%%g1\n" \
1273 " divscc %%g1,%4,%%g1\n" \
1274 " divscc %%g1,%4,%%g1\n" \
1275 " divscc %%g1,%4,%%g1\n" \
1276 " divscc %%g1,%4,%%g1\n" \
1277 " divscc %%g1,%4,%%g1\n" \
1278 " divscc %%g1,%4,%%g1\n" \
1279 " divscc %%g1,%4,%0\n" \
1280 " rd %%y,%1\n" \
1281 " bl,a 1f\n" \
1282 " add %1,%4,%1\n" \
1283 "1: ! End of inline udiv_qrnnd" \
1284 : "=r" ((USItype) (q)), \
1285 "=r" ((USItype) (r)) \
1286 : "r" ((USItype) (n1)), \
1287 "r" ((USItype) (n0)), \
1288 "rI" ((USItype) (d)) \
1289 : "g1" __AND_CLOBBER_CC)
1290 #define UDIV_TIME 37
1291 #define count_leading_zeros(count, x) \
1292 do { \
1293 __asm__ ("scan %1,1,%0" \
1294 : "=r" ((USItype) (count)) \
1295 : "r" ((USItype) (x))); \
1296 } while (0)
1297 /* Early sparclites return 63 for an argument of 0, but they warn that future
1298 implementations might change this. Therefore, leave COUNT_LEADING_ZEROS_0
1299 undefined. */
1300 #else
1301 /* SPARC without integer multiplication and divide instructions.
1302 (i.e. at least Sun4/20,40,60,65,75,110,260,280,330,360,380,470,490) */
1303 #define umul_ppmm(w1, w0, u, v) \
1304 __asm__ ("! Inlined umul_ppmm\n" \
1305 " wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n"\
1306 " sra %3,31,%%o5 ! Don't move this insn\n" \
1307 " and %2,%%o5,%%o5 ! Don't move this insn\n" \
1308 " andcc %%g0,0,%%g1 ! Don't move this insn\n" \
1309 " mulscc %%g1,%3,%%g1\n" \
1310 " mulscc %%g1,%3,%%g1\n" \
1311 " mulscc %%g1,%3,%%g1\n" \
1312 " mulscc %%g1,%3,%%g1\n" \
1313 " mulscc %%g1,%3,%%g1\n" \
1314 " mulscc %%g1,%3,%%g1\n" \
1315 " mulscc %%g1,%3,%%g1\n" \
1316 " mulscc %%g1,%3,%%g1\n" \
1317 " mulscc %%g1,%3,%%g1\n" \
1318 " mulscc %%g1,%3,%%g1\n" \
1319 " mulscc %%g1,%3,%%g1\n" \
1320 " mulscc %%g1,%3,%%g1\n" \
1321 " mulscc %%g1,%3,%%g1\n" \
1322 " mulscc %%g1,%3,%%g1\n" \
1323 " mulscc %%g1,%3,%%g1\n" \
1324 " mulscc %%g1,%3,%%g1\n" \
1325 " mulscc %%g1,%3,%%g1\n" \
1326 " mulscc %%g1,%3,%%g1\n" \
1327 " mulscc %%g1,%3,%%g1\n" \
1328 " mulscc %%g1,%3,%%g1\n" \
1329 " mulscc %%g1,%3,%%g1\n" \
1330 " mulscc %%g1,%3,%%g1\n" \
1331 " mulscc %%g1,%3,%%g1\n" \
1332 " mulscc %%g1,%3,%%g1\n" \
1333 " mulscc %%g1,%3,%%g1\n" \
1334 " mulscc %%g1,%3,%%g1\n" \
1335 " mulscc %%g1,%3,%%g1\n" \
1336 " mulscc %%g1,%3,%%g1\n" \
1337 " mulscc %%g1,%3,%%g1\n" \
1338 " mulscc %%g1,%3,%%g1\n" \
1339 " mulscc %%g1,%3,%%g1\n" \
1340 " mulscc %%g1,%3,%%g1\n" \
1341 " mulscc %%g1,0,%%g1\n" \
1342 " add %%g1,%%o5,%0\n" \
1343 " rd %%y,%1" \
1344 : "=r" ((USItype) (w1)), \
1345 "=r" ((USItype) (w0)) \
1346 : "%rI" ((USItype) (u)), \
1347 "r" ((USItype) (v)) \
1348 : "g1", "o5" __AND_CLOBBER_CC)
1349 #define UMUL_TIME 39 /* 39 instructions */
1350 /* It's quite necessary to add this much assembler for the sparc.
1351 The default udiv_qrnnd (in C) is more than 10 times slower! */
1352 #define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
1353 __asm__ ("! Inlined udiv_qrnnd\n" \
1354 " mov 32,%%g1\n" \
1355 " subcc %1,%2,%%g0\n" \
1356 "1: bcs 5f\n" \
1357 " addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n" \
1358 " sub %1,%2,%1 ! this kills msb of n\n" \
1359 " addx %1,%1,%1 ! so this can't give carry\n" \
1360 " subcc %%g1,1,%%g1\n" \
1361 "2: bne 1b\n" \
1362 " subcc %1,%2,%%g0\n" \
1363 " bcs 3f\n" \
1364 " addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n" \
1365 " b 3f\n" \
1366 " sub %1,%2,%1 ! this kills msb of n\n" \
1367 "4: sub %1,%2,%1\n" \
1368 "5: addxcc %1,%1,%1\n" \
1369 " bcc 2b\n" \
1370 " subcc %%g1,1,%%g1\n" \
1371 "! Got carry from n. Subtract next step to cancel this carry.\n" \
1372 " bne 4b\n" \
1373 " addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb\n" \
1374 " sub %1,%2,%1\n" \
1375 "3: xnor %0,0,%0\n" \
1376 " ! End of inline udiv_qrnnd" \
1377 : "=&r" ((USItype) (__q)), \
1378 "=&r" ((USItype) (__r)) \
1379 : "r" ((USItype) (__d)), \
1380 "1" ((USItype) (__n1)), \
1381 "0" ((USItype) (__n0)) : "g1" __AND_CLOBBER_CC)
1382 #define UDIV_TIME (3+7*32) /* 7 instructions/iteration. 32 iterations. */
1383 #endif /* __sparclite__ */
1384 #endif /* __sparc_v8__ */
1385 #endif /* __sparc_v9__ */
1386 #endif /* sparc32 */
1387
1388 #if ((defined (__sparc__) && defined (__arch64__)) || defined (__sparcv9)) \
1389 && W_TYPE_SIZE == 64
1390 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1391 do { \
1392 UDItype __carry = 0; \
1393 __asm__ ("addcc\t%r5,%6,%1\n\t" \
1394 "add\t%r3,%4,%0\n\t" \
1395 "movcs\t%%xcc, 1, %2\n\t" \
1396 "add\t%0, %2, %0" \
1397 : "=r" ((UDItype)(sh)), \
1398 "=&r" ((UDItype)(sl)), \
1399 "+r" (__carry) \
1400 : "%rJ" ((UDItype)(ah)), \
1401 "rI" ((UDItype)(bh)), \
1402 "%rJ" ((UDItype)(al)), \
1403 "rI" ((UDItype)(bl)) \
1404 __CLOBBER_CC); \
1405 } while (0)
1406
1407 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1408 do { \
1409 UDItype __carry = 0; \
1410 __asm__ ("subcc\t%r5,%6,%1\n\t" \
1411 "sub\t%r3,%4,%0\n\t" \
1412 "movcs\t%%xcc, 1, %2\n\t" \
1413 "sub\t%0, %2, %0" \
1414 : "=r" ((UDItype)(sh)), \
1415 "=&r" ((UDItype)(sl)), \
1416 "+r" (__carry) \
1417 : "%rJ" ((UDItype)(ah)), \
1418 "rI" ((UDItype)(bh)), \
1419 "%rJ" ((UDItype)(al)), \
1420 "rI" ((UDItype)(bl)) \
1421 __CLOBBER_CC); \
1422 } while (0)
1423
1424 #define umul_ppmm(wh, wl, u, v) \
1425 do { \
1426 UDItype tmp1, tmp2, tmp3, tmp4; \
1427 __asm__ __volatile__ ( \
1428 "srl %7,0,%3\n\t" \
1429 "mulx %3,%6,%1\n\t" \
1430 "srlx %6,32,%2\n\t" \
1431 "mulx %2,%3,%4\n\t" \
1432 "sllx %4,32,%5\n\t" \
1433 "srl %6,0,%3\n\t" \
1434 "sub %1,%5,%5\n\t" \
1435 "srlx %5,32,%5\n\t" \
1436 "addcc %4,%5,%4\n\t" \
1437 "srlx %7,32,%5\n\t" \
1438 "mulx %3,%5,%3\n\t" \
1439 "mulx %2,%5,%5\n\t" \
1440 "sethi %%hi(0x80000000),%2\n\t" \
1441 "addcc %4,%3,%4\n\t" \
1442 "srlx %4,32,%4\n\t" \
1443 "add %2,%2,%2\n\t" \
1444 "movcc %%xcc,%%g0,%2\n\t" \
1445 "addcc %5,%4,%5\n\t" \
1446 "sllx %3,32,%3\n\t" \
1447 "add %1,%3,%1\n\t" \
1448 "add %5,%2,%0" \
1449 : "=r" ((UDItype)(wh)), \
1450 "=&r" ((UDItype)(wl)), \
1451 "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \
1452 : "r" ((UDItype)(u)), \
1453 "r" ((UDItype)(v)) \
1454 __CLOBBER_CC); \
1455 } while (0)
1456 #define UMUL_TIME 96
1457 #define UDIV_TIME 230
1458 #endif /* sparc64 */
1459
1460 #if defined (__vax__) && W_TYPE_SIZE == 32
1461 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1462 __asm__ ("addl2 %5,%1\n\tadwc %3,%0" \
1463 : "=g" ((USItype) (sh)), \
1464 "=&g" ((USItype) (sl)) \
1465 : "%0" ((USItype) (ah)), \
1466 "g" ((USItype) (bh)), \
1467 "%1" ((USItype) (al)), \
1468 "g" ((USItype) (bl)))
1469 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1470 __asm__ ("subl2 %5,%1\n\tsbwc %3,%0" \
1471 : "=g" ((USItype) (sh)), \
1472 "=&g" ((USItype) (sl)) \
1473 : "0" ((USItype) (ah)), \
1474 "g" ((USItype) (bh)), \
1475 "1" ((USItype) (al)), \
1476 "g" ((USItype) (bl)))
1477 #define umul_ppmm(xh, xl, m0, m1) \
1478 do { \
1479 union { \
1480 UDItype __ll; \
1481 struct {USItype __l, __h;} __i; \
1482 } __xx; \
1483 USItype __m0 = (m0), __m1 = (m1); \
1484 __asm__ ("emul %1,%2,$0,%0" \
1485 : "=r" (__xx.__ll) \
1486 : "g" (__m0), \
1487 "g" (__m1)); \
1488 (xh) = __xx.__i.__h; \
1489 (xl) = __xx.__i.__l; \
1490 (xh) += ((((SItype) __m0 >> 31) & __m1) \
1491 + (((SItype) __m1 >> 31) & __m0)); \
1492 } while (0)
1493 #define sdiv_qrnnd(q, r, n1, n0, d) \
1494 do { \
1495 union {DItype __ll; \
1496 struct {SItype __l, __h;} __i; \
1497 } __xx; \
1498 __xx.__i.__h = n1; __xx.__i.__l = n0; \
1499 __asm__ ("ediv %3,%2,%0,%1" \
1500 : "=g" (q), "=g" (r) \
1501 : "g" (__xx.__ll), "g" (d)); \
1502 } while (0)
1503 #endif /* __vax__ */
1504
1505 #ifdef _TMS320C6X
1506 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1507 do \
1508 { \
1509 UDItype __ll; \
1510 __asm__ ("addu .l1 %1, %2, %0" \
1511 : "=a" (__ll) : "a" (al), "a" (bl)); \
1512 (sl) = (USItype)__ll; \
1513 (sh) = ((USItype)(__ll >> 32)) + (ah) + (bh); \
1514 } \
1515 while (0)
1516
1517 #ifdef _TMS320C6400_PLUS
1518 #define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
1519 #define umul_ppmm(w1, w0, u, v) \
1520 do { \
1521 UDItype __x = (UDItype) (USItype) (u) * (USItype) (v); \
1522 (w1) = (USItype) (__x >> 32); \
1523 (w0) = (USItype) (__x); \
1524 } while (0)
1525 #endif /* _TMS320C6400_PLUS */
1526
1527 #define count_leading_zeros(count, x) ((count) = __builtin_clz (x))
1528 #ifdef _TMS320C6400
1529 #define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
1530 #endif
1531 #define UMUL_TIME 4
1532 #define UDIV_TIME 40
1533 #endif /* _TMS320C6X */
1534
1535 #if defined (__xtensa__) && W_TYPE_SIZE == 32
1536 /* This code is not Xtensa-configuration-specific, so rely on the compiler
1537 to expand builtin functions depending on what configuration features
1538 are available. This avoids library calls when the operation can be
1539 performed in-line. */
1540 #define umul_ppmm(w1, w0, u, v) \
1541 do { \
1542 DWunion __w; \
1543 __w.ll = __builtin_umulsidi3 (u, v); \
1544 w1 = __w.s.high; \
1545 w0 = __w.s.low; \
1546 } while (0)
1547 #define __umulsidi3(u, v) __builtin_umulsidi3 (u, v)
1548 #define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
1549 #define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
1550 #endif /* __xtensa__ */
1551
1552 #if defined xstormy16
1553 extern UHItype __stormy16_count_leading_zeros (UHItype);
1554 #define count_leading_zeros(count, x) \
1555 do \
1556 { \
1557 UHItype size; \
1558 \
1559 /* We assume that W_TYPE_SIZE is a multiple of 16... */ \
1560 for ((count) = 0, size = W_TYPE_SIZE; size; size -= 16) \
1561 { \
1562 UHItype c; \
1563 \
1564 c = __clzhi2 ((x) >> (size - 16)); \
1565 (count) += c; \
1566 if (c != 16) \
1567 break; \
1568 } \
1569 } \
1570 while (0)
1571 #define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
1572 #endif
1573
1574 #if defined (__z8000__) && W_TYPE_SIZE == 16
1575 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1576 __asm__ ("add %H1,%H5\n\tadc %H0,%H3" \
1577 : "=r" ((unsigned int)(sh)), \
1578 "=&r" ((unsigned int)(sl)) \
1579 : "%0" ((unsigned int)(ah)), \
1580 "r" ((unsigned int)(bh)), \
1581 "%1" ((unsigned int)(al)), \
1582 "rQR" ((unsigned int)(bl)))
1583 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1584 __asm__ ("sub %H1,%H5\n\tsbc %H0,%H3" \
1585 : "=r" ((unsigned int)(sh)), \
1586 "=&r" ((unsigned int)(sl)) \
1587 : "0" ((unsigned int)(ah)), \
1588 "r" ((unsigned int)(bh)), \
1589 "1" ((unsigned int)(al)), \
1590 "rQR" ((unsigned int)(bl)))
1591 #define umul_ppmm(xh, xl, m0, m1) \
1592 do { \
1593 union {long int __ll; \
1594 struct {unsigned int __h, __l;} __i; \
1595 } __xx; \
1596 unsigned int __m0 = (m0), __m1 = (m1); \
1597 __asm__ ("mult %S0,%H3" \
1598 : "=r" (__xx.__i.__h), \
1599 "=r" (__xx.__i.__l) \
1600 : "%1" (__m0), \
1601 "rQR" (__m1)); \
1602 (xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
1603 (xh) += ((((signed int) __m0 >> 15) & __m1) \
1604 + (((signed int) __m1 >> 15) & __m0)); \
1605 } while (0)
1606 #endif /* __z8000__ */
1607
1608 #endif /* __GNUC__ */
1609
1610 /* If this machine has no inline assembler, use C macros. */
1611
1612 #if !defined (add_ssaaaa)
1613 #define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1614 do { \
1615 UWtype __x; \
1616 __x = (al) + (bl); \
1617 (sh) = (ah) + (bh) + (__x < (al)); \
1618 (sl) = __x; \
1619 } while (0)
1620 #endif
1621
1622 #if !defined (sub_ddmmss)
1623 #define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1624 do { \
1625 UWtype __x; \
1626 __x = (al) - (bl); \
1627 (sh) = (ah) - (bh) - (__x > (al)); \
1628 (sl) = __x; \
1629 } while (0)
1630 #endif
1631
1632 /* If we lack umul_ppmm but have smul_ppmm, define umul_ppmm in terms of
1633 smul_ppmm. */
1634 #if !defined (umul_ppmm) && defined (smul_ppmm)
1635 #define umul_ppmm(w1, w0, u, v) \
1636 do { \
1637 UWtype __w1; \
1638 UWtype __xm0 = (u), __xm1 = (v); \
1639 smul_ppmm (__w1, w0, __xm0, __xm1); \
1640 (w1) = __w1 + (-(__xm0 >> (W_TYPE_SIZE - 1)) & __xm1) \
1641 + (-(__xm1 >> (W_TYPE_SIZE - 1)) & __xm0); \
1642 } while (0)
1643 #endif
1644
1645 /* If we still don't have umul_ppmm, define it using plain C. */
1646 #if !defined (umul_ppmm)
1647 #define umul_ppmm(w1, w0, u, v) \
1648 do { \
1649 UWtype __x0, __x1, __x2, __x3; \
1650 UHWtype __ul, __vl, __uh, __vh; \
1651 \
1652 __ul = __ll_lowpart (u); \
1653 __uh = __ll_highpart (u); \
1654 __vl = __ll_lowpart (v); \
1655 __vh = __ll_highpart (v); \
1656 \
1657 __x0 = (UWtype) __ul * __vl; \
1658 __x1 = (UWtype) __ul * __vh; \
1659 __x2 = (UWtype) __uh * __vl; \
1660 __x3 = (UWtype) __uh * __vh; \
1661 \
1662 __x1 += __ll_highpart (__x0);/* this can't give carry */ \
1663 __x1 += __x2; /* but this indeed can */ \
1664 if (__x1 < __x2) /* did we get it? */ \
1665 __x3 += __ll_B; /* yes, add it in the proper pos. */ \
1666 \
1667 (w1) = __x3 + __ll_highpart (__x1); \
1668 (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \
1669 } while (0)
1670 #endif
1671
1672 #if !defined (__umulsidi3)
1673 #define __umulsidi3(u, v) \
1674 ({DWunion __w; \
1675 umul_ppmm (__w.s.high, __w.s.low, u, v); \
1676 __w.ll; })
1677 #endif
1678
1679 /* Define this unconditionally, so it can be used for debugging. */
1680 #define __udiv_qrnnd_c(q, r, n1, n0, d) \
1681 do { \
1682 UWtype __d1, __d0, __q1, __q0; \
1683 UWtype __r1, __r0, __m; \
1684 __d1 = __ll_highpart (d); \
1685 __d0 = __ll_lowpart (d); \
1686 \
1687 __r1 = (n1) % __d1; \
1688 __q1 = (n1) / __d1; \
1689 __m = (UWtype) __q1 * __d0; \
1690 __r1 = __r1 * __ll_B | __ll_highpart (n0); \
1691 if (__r1 < __m) \
1692 { \
1693 __q1--, __r1 += (d); \
1694 if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
1695 if (__r1 < __m) \
1696 __q1--, __r1 += (d); \
1697 } \
1698 __r1 -= __m; \
1699 \
1700 __r0 = __r1 % __d1; \
1701 __q0 = __r1 / __d1; \
1702 __m = (UWtype) __q0 * __d0; \
1703 __r0 = __r0 * __ll_B | __ll_lowpart (n0); \
1704 if (__r0 < __m) \
1705 { \
1706 __q0--, __r0 += (d); \
1707 if (__r0 >= (d)) \
1708 if (__r0 < __m) \
1709 __q0--, __r0 += (d); \
1710 } \
1711 __r0 -= __m; \
1712 \
1713 (q) = (UWtype) __q1 * __ll_B | __q0; \
1714 (r) = __r0; \
1715 } while (0)
1716
1717 /* If the processor has no udiv_qrnnd but sdiv_qrnnd, go through
1718 __udiv_w_sdiv (defined in libgcc or elsewhere). */
1719 #if !defined (udiv_qrnnd) && defined (sdiv_qrnnd)
1720 #define udiv_qrnnd(q, r, nh, nl, d) \
1721 do { \
1722 extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype); \
1723 UWtype __r; \
1724 (q) = __udiv_w_sdiv (&__r, nh, nl, d); \
1725 (r) = __r; \
1726 } while (0)
1727 #endif
1728
1729 /* If udiv_qrnnd was not defined for this processor, use __udiv_qrnnd_c. */
1730 #if !defined (udiv_qrnnd)
1731 #define UDIV_NEEDS_NORMALIZATION 1
1732 #define udiv_qrnnd __udiv_qrnnd_c
1733 #endif
1734
1735 #if !defined (count_leading_zeros)
1736 #define count_leading_zeros(count, x) \
1737 do { \
1738 UWtype __xr = (x); \
1739 UWtype __a; \
1740 \
1741 if (W_TYPE_SIZE <= 32) \
1742 { \
1743 __a = __xr < ((UWtype)1<<2*__BITS4) \
1744 ? (__xr < ((UWtype)1<<__BITS4) ? 0 : __BITS4) \
1745 : (__xr < ((UWtype)1<<3*__BITS4) ? 2*__BITS4 : 3*__BITS4); \
1746 } \
1747 else \
1748 { \
1749 for (__a = W_TYPE_SIZE - 8; __a > 0; __a -= 8) \
1750 if (((__xr >> __a) & 0xff) != 0) \
1751 break; \
1752 } \
1753 \
1754 (count) = W_TYPE_SIZE - (__clz_tab[__xr >> __a] + __a); \
1755 } while (0)
1756 #define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
1757 #endif
1758
1759 #if !defined (count_trailing_zeros)
1760 /* Define count_trailing_zeros using count_leading_zeros. The latter might be
1761 defined in asm, but if it is not, the C version above is good enough. */
1762 #define count_trailing_zeros(count, x) \
1763 do { \
1764 UWtype __ctz_x = (x); \
1765 UWtype __ctz_c; \
1766 count_leading_zeros (__ctz_c, __ctz_x & -__ctz_x); \
1767 (count) = W_TYPE_SIZE - 1 - __ctz_c; \
1768 } while (0)
1769 #endif
1770
1771 #ifndef UDIV_NEEDS_NORMALIZATION
1772 #define UDIV_NEEDS_NORMALIZATION 0
1773 #endif
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