1/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
2 Copyright (C) 1991-2020 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 <https://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
60extern 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)
159extern 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 "rICal" ((USItype) (bh)), \
201 "%r" ((USItype) (al)), \
202 "rICal" ((USItype) (bl)) \
203 : "cc")
204#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
205 __asm__ ("sub.f %1, %4, %5\n\tsbc %0, %2, %3" \
206 : "=r" ((USItype) (sh)), \
207 "=&r" ((USItype) (sl)) \
208 : "r" ((USItype) (ah)), \
209 "rICal" ((USItype) (bh)), \
210 "r" ((USItype) (al)), \
211 "rICal" ((USItype) (bl)) \
212 : "cc")
213
214#define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
215#ifdef __ARC_NORM__
216#define count_leading_zeros(count, x) \
217 do \
218 { \
219 SItype c_; \
220 \
221 __asm__ ("norm.f\t%0,%1\n\tmov.mi\t%0,-1" : "=r" (c_) : "r" (x) : "cc");\
222 (count) = c_ + 1; \
223 } \
224 while (0)
225#define COUNT_LEADING_ZEROS_0 32
226#endif /* __ARC_NORM__ */
227#endif /* __arc__ */
228
229#if defined (__arm__) && (defined (__thumb2__) || !defined (__thumb__)) \
230 && W_TYPE_SIZE == 32
231#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
232 __asm__ ("adds %1, %4, %5\n\tadc %0, %2, %3" \
233 : "=r" ((USItype) (sh)), \
234 "=&r" ((USItype) (sl)) \
235 : "%r" ((USItype) (ah)), \
236 "rI" ((USItype) (bh)), \
237 "%r" ((USItype) (al)), \
238 "rI" ((USItype) (bl)) __CLOBBER_CC)
239#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
240 __asm__ ("subs %1, %4, %5\n\tsbc %0, %2, %3" \
241 : "=r" ((USItype) (sh)), \
242 "=&r" ((USItype) (sl)) \
243 : "r" ((USItype) (ah)), \
244 "rI" ((USItype) (bh)), \
245 "r" ((USItype) (al)), \
246 "rI" ((USItype) (bl)) __CLOBBER_CC)
247# if defined(__ARM_ARCH_2__) || defined(__ARM_ARCH_2A__) \
248 || defined(__ARM_ARCH_3__)
249# define umul_ppmm(xh, xl, a, b) \
250 do { \
251 register USItype __t0, __t1, __t2; \
252 __asm__ ("%@ Inlined umul_ppmm\n" \
253 " mov %2, %5, lsr #16\n" \
254 " mov %0, %6, lsr #16\n" \
255 " bic %3, %5, %2, lsl #16\n" \
256 " bic %4, %6, %0, lsl #16\n" \
257 " mul %1, %3, %4\n" \
258 " mul %4, %2, %4\n" \
259 " mul %3, %0, %3\n" \
260 " mul %0, %2, %0\n" \
261 " adds %3, %4, %3\n" \
262 " addcs %0, %0, #65536\n" \
263 " adds %1, %1, %3, lsl #16\n" \
264 " adc %0, %0, %3, lsr #16" \
265 : "=&r" ((USItype) (xh)), \
266 "=r" ((USItype) (xl)), \
267 "=&r" (__t0), "=&r" (__t1), "=r" (__t2) \
268 : "r" ((USItype) (a)), \
269 "r" ((USItype) (b)) __CLOBBER_CC ); \
270 } while (0)
271# define UMUL_TIME 20
272# else
273# define umul_ppmm(xh, xl, a, b) \
274 do { \
275 /* Generate umull, under compiler control. */ \
276 register UDItype __t0 = (UDItype)(USItype)(a) * (USItype)(b); \
277 (xl) = (USItype)__t0; \
278 (xh) = (USItype)(__t0 >> 32); \
279 } while (0)
280# define UMUL_TIME 3
281# endif
282# define UDIV_TIME 100
283#endif /* __arm__ */
284
285#if defined(__arm__)
286/* Let gcc decide how best to implement count_leading_zeros. */
287#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
288#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctz (X))
289#define COUNT_LEADING_ZEROS_0 32
290#endif
291
292#if defined (__AVR__)
293
294#if W_TYPE_SIZE == 16
295#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
296#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctz (X))
297#define COUNT_LEADING_ZEROS_0 16
298#endif /* W_TYPE_SIZE == 16 */
299
300#if W_TYPE_SIZE == 32
301#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzl (X))
302#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzl (X))
303#define COUNT_LEADING_ZEROS_0 32
304#endif /* W_TYPE_SIZE == 32 */
305
306#if W_TYPE_SIZE == 64
307#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzll (X))
308#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzll (X))
309#define COUNT_LEADING_ZEROS_0 64
310#endif /* W_TYPE_SIZE == 64 */
311
312#endif /* defined (__AVR__) */
313
314#if defined (__CRIS__)
315
316#if __CRIS_arch_version >= 3
317#define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
318#define COUNT_LEADING_ZEROS_0 32
319#endif /* __CRIS_arch_version >= 3 */
320
321#if __CRIS_arch_version >= 8
322#define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
323#endif /* __CRIS_arch_version >= 8 */
324
325#if __CRIS_arch_version >= 10
326#define __umulsidi3(u,v) ((UDItype)(USItype) (u) * (UDItype)(USItype) (v))
327#else
328#define __umulsidi3 __umulsidi3
329extern UDItype __umulsidi3 (USItype, USItype);
330#endif /* __CRIS_arch_version >= 10 */
331
332#define umul_ppmm(w1, w0, u, v) \
333 do { \
334 UDItype __x = __umulsidi3 (u, v); \
335 (w0) = (USItype) (__x); \
336 (w1) = (USItype) (__x >> 32); \
337 } while (0)
338
339/* FIXME: defining add_ssaaaa and sub_ddmmss should be advantageous for
340 DFmode ("double" intrinsics, avoiding two of the three insns handling
341 carry), but defining them as open-code C composing and doing the
342 operation in DImode (UDImode) shows that the DImode needs work:
343 register pressure from requiring neighboring registers and the
344 traffic to and from them come to dominate, in the 4.7 series. */
345
346#endif /* defined (__CRIS__) */
347
348#if defined (__hppa) && W_TYPE_SIZE == 32
349#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
350 __asm__ ("add %4,%5,%1\n\taddc %2,%3,%0" \
351 : "=r" ((USItype) (sh)), \
352 "=&r" ((USItype) (sl)) \
353 : "%rM" ((USItype) (ah)), \
354 "rM" ((USItype) (bh)), \
355 "%rM" ((USItype) (al)), \
356 "rM" ((USItype) (bl)))
357#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
358 __asm__ ("sub %4,%5,%1\n\tsubb %2,%3,%0" \
359 : "=r" ((USItype) (sh)), \
360 "=&r" ((USItype) (sl)) \
361 : "rM" ((USItype) (ah)), \
362 "rM" ((USItype) (bh)), \
363 "rM" ((USItype) (al)), \
364 "rM" ((USItype) (bl)))
365#if defined (_PA_RISC1_1)
366#define umul_ppmm(w1, w0, u, v) \
367 do { \
368 union \
369 { \
370 UDItype __f; \
371 struct {USItype __w1, __w0;} __w1w0; \
372 } __t; \
373 __asm__ ("xmpyu %1,%2,%0" \
374 : "=x" (__t.__f) \
375 : "x" ((USItype) (u)), \
376 "x" ((USItype) (v))); \
377 (w1) = __t.__w1w0.__w1; \
378 (w0) = __t.__w1w0.__w0; \
379 } while (0)
380#define UMUL_TIME 8
381#else
382#define UMUL_TIME 30
383#endif
384#define UDIV_TIME 40
385#define count_leading_zeros(count, x) \
386 do { \
387 USItype __tmp; \
388 __asm__ ( \
389 "ldi 1,%0\n" \
390" extru,= %1,15,16,%%r0 ; Bits 31..16 zero?\n" \
391" extru,tr %1,15,16,%1 ; No. Shift down, skip add.\n"\
392" ldo 16(%0),%0 ; Yes. Perform add.\n" \
393" extru,= %1,23,8,%%r0 ; Bits 15..8 zero?\n" \
394" extru,tr %1,23,8,%1 ; No. Shift down, skip add.\n"\
395" ldo 8(%0),%0 ; Yes. Perform add.\n" \
396" extru,= %1,27,4,%%r0 ; Bits 7..4 zero?\n" \
397" extru,tr %1,27,4,%1 ; No. Shift down, skip add.\n"\
398" ldo 4(%0),%0 ; Yes. Perform add.\n" \
399" extru,= %1,29,2,%%r0 ; Bits 3..2 zero?\n" \
400" extru,tr %1,29,2,%1 ; No. Shift down, skip add.\n"\
401" ldo 2(%0),%0 ; Yes. Perform add.\n" \
402" extru %1,30,1,%1 ; Extract bit 1.\n" \
403" sub %0,%1,%0 ; Subtract it.\n" \
404 : "=r" (count), "=r" (__tmp) : "1" (x)); \
405 } while (0)
406#endif
407
408#if (defined (__i370__) || defined (__s390__) || defined (__mvs__)) && W_TYPE_SIZE == 32
409#if !defined (__zarch__)
410#define smul_ppmm(xh, xl, m0, m1) \
411 do { \
412 union {DItype __ll; \
413 struct {USItype __h, __l;} __i; \
414 } __x; \
415 __asm__ ("lr %N0,%1\n\tmr %0,%2" \
416 : "=&r" (__x.__ll) \
417 : "r" (m0), "r" (m1)); \
418 (xh) = __x.__i.__h; (xl) = __x.__i.__l; \
419 } while (0)
420#define sdiv_qrnnd(q, r, n1, n0, d) \
421 do { \
422 union {DItype __ll; \
423 struct {USItype __h, __l;} __i; \
424 } __x; \
425 __x.__i.__h = n1; __x.__i.__l = n0; \
426 __asm__ ("dr %0,%2" \
427 : "=r" (__x.__ll) \
428 : "0" (__x.__ll), "r" (d)); \
429 (q) = __x.__i.__l; (r) = __x.__i.__h; \
430 } while (0)
431#else
432#define smul_ppmm(xh, xl, m0, m1) \
433 do { \
434 register SItype __r0 __asm__ ("0"); \
435 register SItype __r1 __asm__ ("1") = (m0); \
436 \
437 __asm__ ("mr\t%%r0,%3" \
438 : "=r" (__r0), "=r" (__r1) \
439 : "r" (__r1), "r" (m1)); \
440 (xh) = __r0; (xl) = __r1; \
441 } while (0)
442
443#define sdiv_qrnnd(q, r, n1, n0, d) \
444 do { \
445 register SItype __r0 __asm__ ("0") = (n1); \
446 register SItype __r1 __asm__ ("1") = (n0); \
447 \
448 __asm__ ("dr\t%%r0,%4" \
449 : "=r" (__r0), "=r" (__r1) \
450 : "r" (__r0), "r" (__r1), "r" (d)); \
451 (q) = __r1; (r) = __r0; \
452 } while (0)
453#endif /* __zarch__ */
454#endif
455
456#if (defined (__i386__) || defined (__i486__)) && W_TYPE_SIZE == 32
457#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
458 __asm__ ("add{l} {%5,%1|%1,%5}\n\tadc{l} {%3,%0|%0,%3}" \
459 : "=r" ((USItype) (sh)), \
460 "=&r" ((USItype) (sl)) \
461 : "%0" ((USItype) (ah)), \
462 "g" ((USItype) (bh)), \
463 "%1" ((USItype) (al)), \
464 "g" ((USItype) (bl)))
465#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
466 __asm__ ("sub{l} {%5,%1|%1,%5}\n\tsbb{l} {%3,%0|%0,%3}" \
467 : "=r" ((USItype) (sh)), \
468 "=&r" ((USItype) (sl)) \
469 : "0" ((USItype) (ah)), \
470 "g" ((USItype) (bh)), \
471 "1" ((USItype) (al)), \
472 "g" ((USItype) (bl)))
473#define umul_ppmm(w1, w0, u, v) \
474 __asm__ ("mul{l} %3" \
475 : "=a" ((USItype) (w0)), \
476 "=d" ((USItype) (w1)) \
477 : "%0" ((USItype) (u)), \
478 "rm" ((USItype) (v)))
479#define udiv_qrnnd(q, r, n1, n0, dv) \
480 __asm__ ("div{l} %4" \
481 : "=a" ((USItype) (q)), \
482 "=d" ((USItype) (r)) \
483 : "0" ((USItype) (n0)), \
484 "1" ((USItype) (n1)), \
485 "rm" ((USItype) (dv)))
486#define count_leading_zeros(count, x) ((count) = __builtin_clz (x))
487#define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
488#define UMUL_TIME 40
489#define UDIV_TIME 40
490#endif /* 80x86 */
491
492#if defined (__x86_64__) && W_TYPE_SIZE == 64
493#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
494 __asm__ ("add{q} {%5,%1|%1,%5}\n\tadc{q} {%3,%0|%0,%3}" \
495 : "=r" ((UDItype) (sh)), \
496 "=&r" ((UDItype) (sl)) \
497 : "%0" ((UDItype) (ah)), \
498 "rme" ((UDItype) (bh)), \
499 "%1" ((UDItype) (al)), \
500 "rme" ((UDItype) (bl)))
501#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
502 __asm__ ("sub{q} {%5,%1|%1,%5}\n\tsbb{q} {%3,%0|%0,%3}" \
503 : "=r" ((UDItype) (sh)), \
504 "=&r" ((UDItype) (sl)) \
505 : "0" ((UDItype) (ah)), \
506 "rme" ((UDItype) (bh)), \
507 "1" ((UDItype) (al)), \
508 "rme" ((UDItype) (bl)))
509#define umul_ppmm(w1, w0, u, v) \
510 __asm__ ("mul{q} %3" \
511 : "=a" ((UDItype) (w0)), \
512 "=d" ((UDItype) (w1)) \
513 : "%0" ((UDItype) (u)), \
514 "rm" ((UDItype) (v)))
515#define udiv_qrnnd(q, r, n1, n0, dv) \
516 __asm__ ("div{q} %4" \
517 : "=a" ((UDItype) (q)), \
518 "=d" ((UDItype) (r)) \
519 : "0" ((UDItype) (n0)), \
520 "1" ((UDItype) (n1)), \
521 "rm" ((UDItype) (dv)))
522#define count_leading_zeros(count, x) ((count) = __builtin_clzll (x))
523#define count_trailing_zeros(count, x) ((count) = __builtin_ctzll (x))
524#define UMUL_TIME 40
525#define UDIV_TIME 40
526#endif /* x86_64 */
527
528#if defined (__i960__) && W_TYPE_SIZE == 32
529#define umul_ppmm(w1, w0, u, v) \
530 ({union {UDItype __ll; \
531 struct {USItype __l, __h;} __i; \
532 } __xx; \
533 __asm__ ("emul %2,%1,%0" \
534 : "=d" (__xx.__ll) \
535 : "%dI" ((USItype) (u)), \
536 "dI" ((USItype) (v))); \
537 (w1) = __xx.__i.__h; (w0) = __xx.__i.__l;})
538#define __umulsidi3(u, v) \
539 ({UDItype __w; \
540 __asm__ ("emul %2,%1,%0" \
541 : "=d" (__w) \
542 : "%dI" ((USItype) (u)), \
543 "dI" ((USItype) (v))); \
544 __w; })
545#endif /* __i960__ */
546
547#if defined (__ia64) && W_TYPE_SIZE == 64
548/* This form encourages gcc (pre-release 3.4 at least) to emit predicated
549 "sub r=r,r" and "sub r=r,r,1", giving a 2 cycle latency. The generic
550 code using "al<bl" arithmetically comes out making an actual 0 or 1 in a
551 register, which takes an extra cycle. */
552#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
553 do { \
554 UWtype __x; \
555 __x = (al) - (bl); \
556 if ((al) < (bl)) \
557 (sh) = (ah) - (bh) - 1; \
558 else \
559 (sh) = (ah) - (bh); \
560 (sl) = __x; \
561 } while (0)
562
563/* Do both product parts in assembly, since that gives better code with
564 all gcc versions. Some callers will just use the upper part, and in
565 that situation we waste an instruction, but not any cycles. */
566#define umul_ppmm(ph, pl, m0, m1) \
567 __asm__ ("xma.hu %0 = %2, %3, f0\n\txma.l %1 = %2, %3, f0" \
568 : "=&f" (ph), "=f" (pl) \
569 : "f" (m0), "f" (m1))
570#define count_leading_zeros(count, x) \
571 do { \
572 UWtype _x = (x), _y, _a, _c; \
573 __asm__ ("mux1 %0 = %1, @rev" : "=r" (_y) : "r" (_x)); \
574 __asm__ ("czx1.l %0 = %1" : "=r" (_a) : "r" (-_y | _y)); \
575 _c = (_a - 1) << 3; \
576 _x >>= _c; \
577 if (_x >= 1 << 4) \
578 _x >>= 4, _c += 4; \
579 if (_x >= 1 << 2) \
580 _x >>= 2, _c += 2; \
581 _c += _x >> 1; \
582 (count) = W_TYPE_SIZE - 1 - _c; \
583 } while (0)
584/* similar to what gcc does for __builtin_ffs, but 0 based rather than 1
585 based, and we don't need a special case for x==0 here */
586#define count_trailing_zeros(count, x) \
587 do { \
588 UWtype __ctz_x = (x); \
589 __asm__ ("popcnt %0 = %1" \
590 : "=r" (count) \
591 : "r" ((__ctz_x-1) & ~__ctz_x)); \
592 } while (0)
593#define UMUL_TIME 14
594#endif
595
596#if defined (__M32R__) && W_TYPE_SIZE == 32
597#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
598 /* The cmp clears the condition bit. */ \
599 __asm__ ("cmp %0,%0\n\taddx %1,%5\n\taddx %0,%3" \
600 : "=r" ((USItype) (sh)), \
601 "=&r" ((USItype) (sl)) \
602 : "0" ((USItype) (ah)), \
603 "r" ((USItype) (bh)), \
604 "1" ((USItype) (al)), \
605 "r" ((USItype) (bl)) \
606 : "cbit")
607#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
608 /* The cmp clears the condition bit. */ \
609 __asm__ ("cmp %0,%0\n\tsubx %1,%5\n\tsubx %0,%3" \
610 : "=r" ((USItype) (sh)), \
611 "=&r" ((USItype) (sl)) \
612 : "0" ((USItype) (ah)), \
613 "r" ((USItype) (bh)), \
614 "1" ((USItype) (al)), \
615 "r" ((USItype) (bl)) \
616 : "cbit")
617#endif /* __M32R__ */
618
619#if defined (__mc68000__) && W_TYPE_SIZE == 32
620#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
621 __asm__ ("add%.l %5,%1\n\taddx%.l %3,%0" \
622 : "=d" ((USItype) (sh)), \
623 "=&d" ((USItype) (sl)) \
624 : "%0" ((USItype) (ah)), \
625 "d" ((USItype) (bh)), \
626 "%1" ((USItype) (al)), \
627 "g" ((USItype) (bl)))
628#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
629 __asm__ ("sub%.l %5,%1\n\tsubx%.l %3,%0" \
630 : "=d" ((USItype) (sh)), \
631 "=&d" ((USItype) (sl)) \
632 : "0" ((USItype) (ah)), \
633 "d" ((USItype) (bh)), \
634 "1" ((USItype) (al)), \
635 "g" ((USItype) (bl)))
636
637/* The '020, '030, '040, '060 and CPU32 have 32x32->64 and 64/32->32q-32r. */
638#if (defined (__mc68020__) && !defined (__mc68060__))
639#define umul_ppmm(w1, w0, u, v) \
640 __asm__ ("mulu%.l %3,%1:%0" \
641 : "=d" ((USItype) (w0)), \
642 "=d" ((USItype) (w1)) \
643 : "%0" ((USItype) (u)), \
644 "dmi" ((USItype) (v)))
645#define UMUL_TIME 45
646#define udiv_qrnnd(q, r, n1, n0, d) \
647 __asm__ ("divu%.l %4,%1:%0" \
648 : "=d" ((USItype) (q)), \
649 "=d" ((USItype) (r)) \
650 : "0" ((USItype) (n0)), \
651 "1" ((USItype) (n1)), \
652 "dmi" ((USItype) (d)))
653#define UDIV_TIME 90
654#define sdiv_qrnnd(q, r, n1, n0, d) \
655 __asm__ ("divs%.l %4,%1:%0" \
656 : "=d" ((USItype) (q)), \
657 "=d" ((USItype) (r)) \
658 : "0" ((USItype) (n0)), \
659 "1" ((USItype) (n1)), \
660 "dmi" ((USItype) (d)))
661
662#elif defined (__mcoldfire__) /* not mc68020 */
663
664#define umul_ppmm(xh, xl, a, b) \
665 __asm__ ("| Inlined umul_ppmm\n" \
666 " move%.l %2,%/d0\n" \
667 " move%.l %3,%/d1\n" \
668 " move%.l %/d0,%/d2\n" \
669 " swap %/d0\n" \
670 " move%.l %/d1,%/d3\n" \
671 " swap %/d1\n" \
672 " move%.w %/d2,%/d4\n" \
673 " mulu %/d3,%/d4\n" \
674 " mulu %/d1,%/d2\n" \
675 " mulu %/d0,%/d3\n" \
676 " mulu %/d0,%/d1\n" \
677 " move%.l %/d4,%/d0\n" \
678 " clr%.w %/d0\n" \
679 " swap %/d0\n" \
680 " add%.l %/d0,%/d2\n" \
681 " add%.l %/d3,%/d2\n" \
682 " jcc 1f\n" \
683 " add%.l %#65536,%/d1\n" \
684 "1: swap %/d2\n" \
685 " moveq %#0,%/d0\n" \
686 " move%.w %/d2,%/d0\n" \
687 " move%.w %/d4,%/d2\n" \
688 " move%.l %/d2,%1\n" \
689 " add%.l %/d1,%/d0\n" \
690 " move%.l %/d0,%0" \
691 : "=g" ((USItype) (xh)), \
692 "=g" ((USItype) (xl)) \
693 : "g" ((USItype) (a)), \
694 "g" ((USItype) (b)) \
695 : "d0", "d1", "d2", "d3", "d4")
696#define UMUL_TIME 100
697#define UDIV_TIME 400
698#else /* not ColdFire */
699/* %/ inserts REGISTER_PREFIX, %# inserts IMMEDIATE_PREFIX. */
700#define umul_ppmm(xh, xl, a, b) \
701 __asm__ ("| Inlined umul_ppmm\n" \
702 " move%.l %2,%/d0\n" \
703 " move%.l %3,%/d1\n" \
704 " move%.l %/d0,%/d2\n" \
705 " swap %/d0\n" \
706 " move%.l %/d1,%/d3\n" \
707 " swap %/d1\n" \
708 " move%.w %/d2,%/d4\n" \
709 " mulu %/d3,%/d4\n" \
710 " mulu %/d1,%/d2\n" \
711 " mulu %/d0,%/d3\n" \
712 " mulu %/d0,%/d1\n" \
713 " move%.l %/d4,%/d0\n" \
714 " eor%.w %/d0,%/d0\n" \
715 " swap %/d0\n" \
716 " add%.l %/d0,%/d2\n" \
717 " add%.l %/d3,%/d2\n" \
718 " jcc 1f\n" \
719 " add%.l %#65536,%/d1\n" \
720 "1: swap %/d2\n" \
721 " moveq %#0,%/d0\n" \
722 " move%.w %/d2,%/d0\n" \
723 " move%.w %/d4,%/d2\n" \
724 " move%.l %/d2,%1\n" \
725 " add%.l %/d1,%/d0\n" \
726 " move%.l %/d0,%0" \
727 : "=g" ((USItype) (xh)), \
728 "=g" ((USItype) (xl)) \
729 : "g" ((USItype) (a)), \
730 "g" ((USItype) (b)) \
731 : "d0", "d1", "d2", "d3", "d4")
732#define UMUL_TIME 100
733#define UDIV_TIME 400
734
735#endif /* not mc68020 */
736
737/* The '020, '030, '040 and '060 have bitfield insns.
738 cpu32 disguises as a 68020, but lacks them. */
739#if defined (__mc68020__) && !defined (__mcpu32__)
740#define count_leading_zeros(count, x) \
741 __asm__ ("bfffo %1{%b2:%b2},%0" \
742 : "=d" ((USItype) (count)) \
743 : "od" ((USItype) (x)), "n" (0))
744/* Some ColdFire architectures have a ff1 instruction supported via
745 __builtin_clz. */
746#elif defined (__mcfisaaplus__) || defined (__mcfisac__)
747#define count_leading_zeros(count,x) ((count) = __builtin_clz (x))
748#define COUNT_LEADING_ZEROS_0 32
749#endif
750#endif /* mc68000 */
751
752#if defined (__m88000__) && W_TYPE_SIZE == 32
753#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
754 __asm__ ("addu.co %1,%r4,%r5\n\taddu.ci %0,%r2,%r3" \
755 : "=r" ((USItype) (sh)), \
756 "=&r" ((USItype) (sl)) \
757 : "%rJ" ((USItype) (ah)), \
758 "rJ" ((USItype) (bh)), \
759 "%rJ" ((USItype) (al)), \
760 "rJ" ((USItype) (bl)))
761#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
762 __asm__ ("subu.co %1,%r4,%r5\n\tsubu.ci %0,%r2,%r3" \
763 : "=r" ((USItype) (sh)), \
764 "=&r" ((USItype) (sl)) \
765 : "rJ" ((USItype) (ah)), \
766 "rJ" ((USItype) (bh)), \
767 "rJ" ((USItype) (al)), \
768 "rJ" ((USItype) (bl)))
769#define count_leading_zeros(count, x) \
770 do { \
771 USItype __cbtmp; \
772 __asm__ ("ff1 %0,%1" \
773 : "=r" (__cbtmp) \
774 : "r" ((USItype) (x))); \
775 (count) = __cbtmp ^ 31; \
776 } while (0)
777#define COUNT_LEADING_ZEROS_0 63 /* sic */
778#if defined (__mc88110__)
779#define umul_ppmm(wh, wl, u, v) \
780 do { \
781 union {UDItype __ll; \
782 struct {USItype __h, __l;} __i; \
783 } __xx; \
784 __asm__ ("mulu.d %0,%1,%2" \
785 : "=r" (__xx.__ll) \
786 : "r" ((USItype) (u)), \
787 "r" ((USItype) (v))); \
788 (wh) = __xx.__i.__h; \
789 (wl) = __xx.__i.__l; \
790 } while (0)
791#define udiv_qrnnd(q, r, n1, n0, d) \
792 ({union {UDItype __ll; \
793 struct {USItype __h, __l;} __i; \
794 } __xx; \
795 USItype __q; \
796 __xx.__i.__h = (n1); __xx.__i.__l = (n0); \
797 __asm__ ("divu.d %0,%1,%2" \
798 : "=r" (__q) \
799 : "r" (__xx.__ll), \
800 "r" ((USItype) (d))); \
801 (r) = (n0) - __q * (d); (q) = __q; })
802#define UMUL_TIME 5
803#define UDIV_TIME 25
804#else
805#define UMUL_TIME 17
806#define UDIV_TIME 150
807#endif /* __mc88110__ */
808#endif /* __m88000__ */
809
810#if defined (__mn10300__)
811# if defined (__AM33__)
812# define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
813# define umul_ppmm(w1, w0, u, v) \
814 asm("mulu %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v))
815# define smul_ppmm(w1, w0, u, v) \
816 asm("mul %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v))
817# else
818# define umul_ppmm(w1, w0, u, v) \
819 asm("nop; nop; mulu %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v))
820# define smul_ppmm(w1, w0, u, v) \
821 asm("nop; nop; mul %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v))
822# endif
823# define add_ssaaaa(sh, sl, ah, al, bh, bl) \
824 do { \
825 DWunion __s, __a, __b; \
826 __a.s.low = (al); __a.s.high = (ah); \
827 __b.s.low = (bl); __b.s.high = (bh); \
828 __s.ll = __a.ll + __b.ll; \
829 (sl) = __s.s.low; (sh) = __s.s.high; \
830 } while (0)
831# define sub_ddmmss(sh, sl, ah, al, bh, bl) \
832 do { \
833 DWunion __s, __a, __b; \
834 __a.s.low = (al); __a.s.high = (ah); \
835 __b.s.low = (bl); __b.s.high = (bh); \
836 __s.ll = __a.ll - __b.ll; \
837 (sl) = __s.s.low; (sh) = __s.s.high; \
838 } while (0)
839# define udiv_qrnnd(q, r, nh, nl, d) \
840 asm("divu %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh))
841# define sdiv_qrnnd(q, r, nh, nl, d) \
842 asm("div %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh))
843# define UMUL_TIME 3
844# define UDIV_TIME 38
845#endif
846
847#if defined (__mips__) && W_TYPE_SIZE == 32
848#define umul_ppmm(w1, w0, u, v) \
849 do { \
850 UDItype __x = (UDItype) (USItype) (u) * (USItype) (v); \
851 (w1) = (USItype) (__x >> 32); \
852 (w0) = (USItype) (__x); \
853 } while (0)
854#define UMUL_TIME 10
855#define UDIV_TIME 100
856
857#if (__mips == 32 || __mips == 64) && ! defined (__mips16)
858#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
859#define COUNT_LEADING_ZEROS_0 32
860#endif
861#endif /* __mips__ */
862
863/* FIXME: We should test _IBMR2 here when we add assembly support for the
864 system vendor compilers.
865 FIXME: What's needed for gcc PowerPC VxWorks? __vxworks__ is not good
866 enough, since that hits ARM and m68k too. */
867#if (defined (_ARCH_PPC) /* AIX */ \
868 || defined (__powerpc__) /* gcc */ \
869 || defined (__POWERPC__) /* BEOS */ \
870 || defined (__ppc__) /* Darwin */ \
871 || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */ \
872 || (defined (PPC) && defined (CPU_FAMILY) /* VxWorks */ \
873 && CPU_FAMILY == PPC) \
874 ) && W_TYPE_SIZE == 32
875#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
876 do { \
877 if (__builtin_constant_p (bh) && (bh) == 0) \
878 __asm__ ("add%I4c %1,%3,%4\n\taddze %0,%2" \
879 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
880 else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \
881 __asm__ ("add%I4c %1,%3,%4\n\taddme %0,%2" \
882 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
883 else \
884 __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3" \
885 : "=r" (sh), "=&r" (sl) \
886 : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl)); \
887 } while (0)
888#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
889 do { \
890 if (__builtin_constant_p (ah) && (ah) == 0) \
891 __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2" \
892 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
893 else if (__builtin_constant_p (ah) && (ah) == ~(USItype) 0) \
894 __asm__ ("subf%I3c %1,%4,%3\n\tsubfme %0,%2" \
895 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
896 else if (__builtin_constant_p (bh) && (bh) == 0) \
897 __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2" \
898 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
899 else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \
900 __asm__ ("subf%I3c %1,%4,%3\n\taddze %0,%2" \
901 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
902 else \
903 __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2" \
904 : "=r" (sh), "=&r" (sl) \
905 : "r" (ah), "r" (bh), "rI" (al), "r" (bl)); \
906 } while (0)
907#define count_leading_zeros(count, x) \
908 __asm__ ("cntlzw %0,%1" : "=r" (count) : "r" (x))
909#define COUNT_LEADING_ZEROS_0 32
910#if defined (_ARCH_PPC) || defined (__powerpc__) || defined (__POWERPC__) \
911 || defined (__ppc__) \
912 || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */ \
913 || (defined (PPC) && defined (CPU_FAMILY) /* VxWorks */ \
914 && CPU_FAMILY == PPC)
915#define umul_ppmm(ph, pl, m0, m1) \
916 do { \
917 USItype __m0 = (m0), __m1 = (m1); \
918 __asm__ ("mulhwu %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
919 (pl) = __m0 * __m1; \
920 } while (0)
921#define UMUL_TIME 15
922#define smul_ppmm(ph, pl, m0, m1) \
923 do { \
924 SItype __m0 = (m0), __m1 = (m1); \
925 __asm__ ("mulhw %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
926 (pl) = __m0 * __m1; \
927 } while (0)
928#define SMUL_TIME 14
929#define UDIV_TIME 120
930#endif
931#endif /* 32-bit POWER architecture variants. */
932
933/* We should test _IBMR2 here when we add assembly support for the system
934 vendor compilers. */
935#if (defined (_ARCH_PPC64) || defined (__powerpc64__)) && W_TYPE_SIZE == 64
936#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
937 do { \
938 if (__builtin_constant_p (bh) && (bh) == 0) \
939 __asm__ ("add%I4c %1,%3,%4\n\taddze %0,%2" \
940 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
941 else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0) \
942 __asm__ ("add%I4c %1,%3,%4\n\taddme %0,%2" \
943 : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
944 else \
945 __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3" \
946 : "=r" (sh), "=&r" (sl) \
947 : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl)); \
948 } while (0)
949#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
950 do { \
951 if (__builtin_constant_p (ah) && (ah) == 0) \
952 __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2" \
953 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
954 else if (__builtin_constant_p (ah) && (ah) == ~(UDItype) 0) \
955 __asm__ ("subf%I3c %1,%4,%3\n\tsubfme %0,%2" \
956 : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
957 else if (__builtin_constant_p (bh) && (bh) == 0) \
958 __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2" \
959 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
960 else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0) \
961 __asm__ ("subf%I3c %1,%4,%3\n\taddze %0,%2" \
962 : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
963 else \
964 __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2" \
965 : "=r" (sh), "=&r" (sl) \
966 : "r" (ah), "r" (bh), "rI" (al), "r" (bl)); \
967 } while (0)
968#define count_leading_zeros(count, x) \
969 __asm__ ("cntlzd %0,%1" : "=r" (count) : "r" (x))
970#define COUNT_LEADING_ZEROS_0 64
971#define umul_ppmm(ph, pl, m0, m1) \
972 do { \
973 UDItype __m0 = (m0), __m1 = (m1); \
974 __asm__ ("mulhdu %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
975 (pl) = __m0 * __m1; \
976 } while (0)
977#define UMUL_TIME 15
978#define smul_ppmm(ph, pl, m0, m1) \
979 do { \
980 DItype __m0 = (m0), __m1 = (m1); \
981 __asm__ ("mulhd %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \
982 (pl) = __m0 * __m1; \
983 } while (0)
984#define SMUL_TIME 14 /* ??? */
985#define UDIV_TIME 120 /* ??? */
986#endif /* 64-bit PowerPC. */
987
988#if defined (__ibm032__) /* RT/ROMP */ && W_TYPE_SIZE == 32
989#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
990 __asm__ ("a %1,%5\n\tae %0,%3" \
991 : "=r" ((USItype) (sh)), \
992 "=&r" ((USItype) (sl)) \
993 : "%0" ((USItype) (ah)), \
994 "r" ((USItype) (bh)), \
995 "%1" ((USItype) (al)), \
996 "r" ((USItype) (bl)))
997#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
998 __asm__ ("s %1,%5\n\tse %0,%3" \
999 : "=r" ((USItype) (sh)), \
1000 "=&r" ((USItype) (sl)) \
1001 : "0" ((USItype) (ah)), \
1002 "r" ((USItype) (bh)), \
1003 "1" ((USItype) (al)), \
1004 "r" ((USItype) (bl)))
1005#define umul_ppmm(ph, pl, m0, m1) \
1006 do { \
1007 USItype __m0 = (m0), __m1 = (m1); \
1008 __asm__ ( \
1009 "s r2,r2\n" \
1010" mts r10,%2\n" \
1011" m r2,%3\n" \
1012" m r2,%3\n" \
1013" m r2,%3\n" \
1014" m r2,%3\n" \
1015" m r2,%3\n" \
1016" m r2,%3\n" \
1017" m r2,%3\n" \
1018" m r2,%3\n" \
1019" m r2,%3\n" \
1020" m r2,%3\n" \
1021" m r2,%3\n" \
1022" m r2,%3\n" \
1023" m r2,%3\n" \
1024" m r2,%3\n" \
1025" m r2,%3\n" \
1026" m r2,%3\n" \
1027" cas %0,r2,r0\n" \
1028" mfs r10,%1" \
1029 : "=r" ((USItype) (ph)), \
1030 "=r" ((USItype) (pl)) \
1031 : "%r" (__m0), \
1032 "r" (__m1) \
1033 : "r2"); \
1034 (ph) += ((((SItype) __m0 >> 31) & __m1) \
1035 + (((SItype) __m1 >> 31) & __m0)); \
1036 } while (0)
1037#define UMUL_TIME 20
1038#define UDIV_TIME 200
1039#define count_leading_zeros(count, x) \
1040 do { \
1041 if ((x) >= 0x10000) \
1042 __asm__ ("clz %0,%1" \
1043 : "=r" ((USItype) (count)) \
1044 : "r" ((USItype) (x) >> 16)); \
1045 else \
1046 { \
1047 __asm__ ("clz %0,%1" \
1048 : "=r" ((USItype) (count)) \
1049 : "r" ((USItype) (x))); \
1050 (count) += 16; \
1051 } \
1052 } while (0)
1053#endif
1054
1055#if defined(__riscv)
1056#ifdef __riscv_mul
1057#define __umulsidi3(u,v) ((UDWtype)(UWtype)(u) * (UWtype)(v))
1058#define __muluw3(a, b) ((UWtype)(a) * (UWtype)(b))
1059#else
1060#if __riscv_xlen == 32
1061 #define MULUW3 "call __mulsi3"
1062#elif __riscv_xlen == 64
1063 #define MULUW3 "call __muldi3"
1064#else
1065#error unsupport xlen
1066#endif /* __riscv_xlen */
1067/* We rely on the fact that MULUW3 doesn't clobber the t-registers.
1068 It can get better register allocation result. */
1069#define __muluw3(a, b) \
1070 ({ \
1071 register UWtype __op0 asm ("a0") = a; \
1072 register UWtype __op1 asm ("a1") = b; \
1073 asm volatile (MULUW3 \
1074 : "+r" (__op0), "+r" (__op1) \
1075 : \
1076 : "ra", "a2", "a3"); \
1077 __op0; \
1078 })
1079#endif /* __riscv_mul */
1080#define umul_ppmm(w1, w0, u, v) \
1081 do { \
1082 UWtype __x0, __x1, __x2, __x3; \
1083 UHWtype __ul, __vl, __uh, __vh; \
1084 \
1085 __ul = __ll_lowpart (u); \
1086 __uh = __ll_highpart (u); \
1087 __vl = __ll_lowpart (v); \
1088 __vh = __ll_highpart (v); \
1089 \
1090 __x0 = __muluw3 (__ul, __vl); \
1091 __x1 = __muluw3 (__ul, __vh); \
1092 __x2 = __muluw3 (__uh, __vl); \
1093 __x3 = __muluw3 (__uh, __vh); \
1094 \
1095 __x1 += __ll_highpart (__x0);/* this can't give carry */ \
1096 __x1 += __x2; /* but this indeed can */ \
1097 if (__x1 < __x2) /* did we get it? */ \
1098 __x3 += __ll_B; /* yes, add it in the proper pos. */ \
1099 \
1100 (w1) = __x3 + __ll_highpart (__x1); \
1101 (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \
1102 } while (0)
1103#endif /* __riscv */
1104
1105#if defined(__sh__) && W_TYPE_SIZE == 32
1106#ifndef __sh1__
1107#define umul_ppmm(w1, w0, u, v) \
1108 __asm__ ( \
1109 "dmulu.l %2,%3\n\tsts%M1 macl,%1\n\tsts%M0 mach,%0" \
1110 : "=r<" ((USItype)(w1)), \
1111 "=r<" ((USItype)(w0)) \
1112 : "r" ((USItype)(u)), \
1113 "r" ((USItype)(v)) \
1114 : "macl", "mach")
1115#define UMUL_TIME 5
1116#endif
1117
1118/* This is the same algorithm as __udiv_qrnnd_c. */
1119#define UDIV_NEEDS_NORMALIZATION 1
1120
1121#ifdef __FDPIC__
1122/* FDPIC needs a special version of the asm fragment to extract the
1123 code address from the function descriptor. __udiv_qrnnd_16 is
1124 assumed to be local and not to use the GOT, so loading r12 is
1125 not needed. */
1126#define udiv_qrnnd(q, r, n1, n0, d) \
1127 do { \
1128 extern UWtype __udiv_qrnnd_16 (UWtype, UWtype) \
1129 __attribute__ ((visibility ("hidden"))); \
1130 /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ \
1131 __asm__ ( \
1132 "mov%M4 %4,r5\n" \
1133" swap.w %3,r4\n" \
1134" swap.w r5,r6\n" \
1135" mov.l @%5,r2\n" \
1136" jsr @r2\n" \
1137" shll16 r6\n" \
1138" swap.w r4,r4\n" \
1139" mov.l @%5,r2\n" \
1140" jsr @r2\n" \
1141" swap.w r1,%0\n" \
1142" or r1,%0" \
1143 : "=r" (q), "=&z" (r) \
1144 : "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
1145 : "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
1146 } while (0)
1147#else
1148#define udiv_qrnnd(q, r, n1, n0, d) \
1149 do { \
1150 extern UWtype __udiv_qrnnd_16 (UWtype, UWtype) \
1151 __attribute__ ((visibility ("hidden"))); \
1152 /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */ \
1153 __asm__ ( \
1154 "mov%M4 %4,r5\n" \
1155" swap.w %3,r4\n" \
1156" swap.w r5,r6\n" \
1157" jsr @%5\n" \
1158" shll16 r6\n" \
1159" swap.w r4,r4\n" \
1160" jsr @%5\n" \
1161" swap.w r1,%0\n" \
1162" or r1,%0" \
1163 : "=r" (q), "=&z" (r) \
1164 : "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16) \
1165 : "r1", "r2", "r4", "r5", "r6", "pr", "t"); \
1166 } while (0)
1167#endif /* __FDPIC__ */
1168
1169#define UDIV_TIME 80
1170
1171#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1172 __asm__ ("clrt;subc %5,%1; subc %4,%0" \
1173 : "=r" (sh), "=r" (sl) \
1174 : "0" (ah), "1" (al), "r" (bh), "r" (bl) : "t")
1175
1176#endif /* __sh__ */
1177
1178#if defined (__sparc__) && !defined (__arch64__) && !defined (__sparcv9) \
1179 && W_TYPE_SIZE == 32
1180#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1181 __asm__ ("addcc %r4,%5,%1\n\taddx %r2,%3,%0" \
1182 : "=r" ((USItype) (sh)), \
1183 "=&r" ((USItype) (sl)) \
1184 : "%rJ" ((USItype) (ah)), \
1185 "rI" ((USItype) (bh)), \
1186 "%rJ" ((USItype) (al)), \
1187 "rI" ((USItype) (bl)) \
1188 __CLOBBER_CC)
1189#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1190 __asm__ ("subcc %r4,%5,%1\n\tsubx %r2,%3,%0" \
1191 : "=r" ((USItype) (sh)), \
1192 "=&r" ((USItype) (sl)) \
1193 : "rJ" ((USItype) (ah)), \
1194 "rI" ((USItype) (bh)), \
1195 "rJ" ((USItype) (al)), \
1196 "rI" ((USItype) (bl)) \
1197 __CLOBBER_CC)
1198#if defined (__sparc_v9__)
1199#define umul_ppmm(w1, w0, u, v) \
1200 do { \
1201 register USItype __g1 asm ("g1"); \
1202 __asm__ ("umul\t%2,%3,%1\n\t" \
1203 "srlx\t%1, 32, %0" \
1204 : "=r" ((USItype) (w1)), \
1205 "=r" (__g1) \
1206 : "r" ((USItype) (u)), \
1207 "r" ((USItype) (v))); \
1208 (w0) = __g1; \
1209 } while (0)
1210#define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
1211 __asm__ ("mov\t%2,%%y\n\t" \
1212 "udiv\t%3,%4,%0\n\t" \
1213 "umul\t%0,%4,%1\n\t" \
1214 "sub\t%3,%1,%1" \
1215 : "=&r" ((USItype) (__q)), \
1216 "=&r" ((USItype) (__r)) \
1217 : "r" ((USItype) (__n1)), \
1218 "r" ((USItype) (__n0)), \
1219 "r" ((USItype) (__d)))
1220#else
1221#if defined (__sparc_v8__)
1222#define umul_ppmm(w1, w0, u, v) \
1223 __asm__ ("umul %2,%3,%1;rd %%y,%0" \
1224 : "=r" ((USItype) (w1)), \
1225 "=r" ((USItype) (w0)) \
1226 : "r" ((USItype) (u)), \
1227 "r" ((USItype) (v)))
1228#define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
1229 __asm__ ("mov %2,%%y;nop;nop;nop;udiv %3,%4,%0;umul %0,%4,%1;sub %3,%1,%1"\
1230 : "=&r" ((USItype) (__q)), \
1231 "=&r" ((USItype) (__r)) \
1232 : "r" ((USItype) (__n1)), \
1233 "r" ((USItype) (__n0)), \
1234 "r" ((USItype) (__d)))
1235#else
1236#if defined (__sparclite__)
1237/* This has hardware multiply but not divide. It also has two additional
1238 instructions scan (ffs from high bit) and divscc. */
1239#define umul_ppmm(w1, w0, u, v) \
1240 __asm__ ("umul %2,%3,%1;rd %%y,%0" \
1241 : "=r" ((USItype) (w1)), \
1242 "=r" ((USItype) (w0)) \
1243 : "r" ((USItype) (u)), \
1244 "r" ((USItype) (v)))
1245#define udiv_qrnnd(q, r, n1, n0, d) \
1246 __asm__ ("! Inlined udiv_qrnnd\n" \
1247" wr %%g0,%2,%%y ! Not a delayed write for sparclite\n" \
1248" tst %%g0\n" \
1249" divscc %3,%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,%%g1\n" \
1280" divscc %%g1,%4,%0\n" \
1281" rd %%y,%1\n" \
1282" bl,a 1f\n" \
1283" add %1,%4,%1\n" \
1284"1: ! End of inline udiv_qrnnd" \
1285 : "=r" ((USItype) (q)), \
1286 "=r" ((USItype) (r)) \
1287 : "r" ((USItype) (n1)), \
1288 "r" ((USItype) (n0)), \
1289 "rI" ((USItype) (d)) \
1290 : "g1" __AND_CLOBBER_CC)
1291#define UDIV_TIME 37
1292#define count_leading_zeros(count, x) \
1293 do { \
1294 __asm__ ("scan %1,1,%0" \
1295 : "=r" ((USItype) (count)) \
1296 : "r" ((USItype) (x))); \
1297 } while (0)
1298/* Early sparclites return 63 for an argument of 0, but they warn that future
1299 implementations might change this. Therefore, leave COUNT_LEADING_ZEROS_0
1300 undefined. */
1301#else
1302/* SPARC without integer multiplication and divide instructions.
1303 (i.e. at least Sun4/20,40,60,65,75,110,260,280,330,360,380,470,490) */
1304#define umul_ppmm(w1, w0, u, v) \
1305 __asm__ ("! Inlined umul_ppmm\n" \
1306" wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n"\
1307" sra %3,31,%%o5 ! Don't move this insn\n" \
1308" and %2,%%o5,%%o5 ! Don't move this insn\n" \
1309" andcc %%g0,0,%%g1 ! Don't move this insn\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,%3,%%g1\n" \
1342" mulscc %%g1,0,%%g1\n" \
1343" add %%g1,%%o5,%0\n" \
1344" rd %%y,%1" \
1345 : "=r" ((USItype) (w1)), \
1346 "=r" ((USItype) (w0)) \
1347 : "%rI" ((USItype) (u)), \
1348 "r" ((USItype) (v)) \
1349 : "g1", "o5" __AND_CLOBBER_CC)
1350#define UMUL_TIME 39 /* 39 instructions */
1351/* It's quite necessary to add this much assembler for the sparc.
1352 The default udiv_qrnnd (in C) is more than 10 times slower! */
1353#define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
1354 __asm__ ("! Inlined udiv_qrnnd\n" \
1355" mov 32,%%g1\n" \
1356" subcc %1,%2,%%g0\n" \
1357"1: bcs 5f\n" \
1358" addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n" \
1359" sub %1,%2,%1 ! this kills msb of n\n" \
1360" addx %1,%1,%1 ! so this can't give carry\n" \
1361" subcc %%g1,1,%%g1\n" \
1362"2: bne 1b\n" \
1363" subcc %1,%2,%%g0\n" \
1364" bcs 3f\n" \
1365" addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n" \
1366" b 3f\n" \
1367" sub %1,%2,%1 ! this kills msb of n\n" \
1368"4: sub %1,%2,%1\n" \
1369"5: addxcc %1,%1,%1\n" \
1370" bcc 2b\n" \
1371" subcc %%g1,1,%%g1\n" \
1372"! Got carry from n. Subtract next step to cancel this carry.\n" \
1373" bne 4b\n" \
1374" addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb\n" \
1375" sub %1,%2,%1\n" \
1376"3: xnor %0,0,%0\n" \
1377" ! End of inline udiv_qrnnd" \
1378 : "=&r" ((USItype) (__q)), \
1379 "=&r" ((USItype) (__r)) \
1380 : "r" ((USItype) (__d)), \
1381 "1" ((USItype) (__n1)), \
1382 "0" ((USItype) (__n0)) : "g1" __AND_CLOBBER_CC)
1383#define UDIV_TIME (3+7*32) /* 7 instructions/iteration. 32 iterations. */
1384#endif /* __sparclite__ */
1385#endif /* __sparc_v8__ */
1386#endif /* __sparc_v9__ */
1387#endif /* sparc32 */
1388
1389#if ((defined (__sparc__) && defined (__arch64__)) || defined (__sparcv9)) \
1390 && W_TYPE_SIZE == 64
1391#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1392 do { \
1393 UDItype __carry = 0; \
1394 __asm__ ("addcc\t%r5,%6,%1\n\t" \
1395 "add\t%r3,%4,%0\n\t" \
1396 "movcs\t%%xcc, 1, %2\n\t" \
1397 "add\t%0, %2, %0" \
1398 : "=r" ((UDItype)(sh)), \
1399 "=&r" ((UDItype)(sl)), \
1400 "+r" (__carry) \
1401 : "%rJ" ((UDItype)(ah)), \
1402 "rI" ((UDItype)(bh)), \
1403 "%rJ" ((UDItype)(al)), \
1404 "rI" ((UDItype)(bl)) \
1405 __CLOBBER_CC); \
1406 } while (0)
1407
1408#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1409 do { \
1410 UDItype __carry = 0; \
1411 __asm__ ("subcc\t%r5,%6,%1\n\t" \
1412 "sub\t%r3,%4,%0\n\t" \
1413 "movcs\t%%xcc, 1, %2\n\t" \
1414 "sub\t%0, %2, %0" \
1415 : "=r" ((UDItype)(sh)), \
1416 "=&r" ((UDItype)(sl)), \
1417 "+r" (__carry) \
1418 : "%rJ" ((UDItype)(ah)), \
1419 "rI" ((UDItype)(bh)), \
1420 "%rJ" ((UDItype)(al)), \
1421 "rI" ((UDItype)(bl)) \
1422 __CLOBBER_CC); \
1423 } while (0)
1424
1425#define umul_ppmm(wh, wl, u, v) \
1426 do { \
1427 UDItype tmp1, tmp2, tmp3, tmp4; \
1428 __asm__ __volatile__ ( \
1429 "srl %7,0,%3\n\t" \
1430 "mulx %3,%6,%1\n\t" \
1431 "srlx %6,32,%2\n\t" \
1432 "mulx %2,%3,%4\n\t" \
1433 "sllx %4,32,%5\n\t" \
1434 "srl %6,0,%3\n\t" \
1435 "sub %1,%5,%5\n\t" \
1436 "srlx %5,32,%5\n\t" \
1437 "addcc %4,%5,%4\n\t" \
1438 "srlx %7,32,%5\n\t" \
1439 "mulx %3,%5,%3\n\t" \
1440 "mulx %2,%5,%5\n\t" \
1441 "sethi %%hi(0x80000000),%2\n\t" \
1442 "addcc %4,%3,%4\n\t" \
1443 "srlx %4,32,%4\n\t" \
1444 "add %2,%2,%2\n\t" \
1445 "movcc %%xcc,%%g0,%2\n\t" \
1446 "addcc %5,%4,%5\n\t" \
1447 "sllx %3,32,%3\n\t" \
1448 "add %1,%3,%1\n\t" \
1449 "add %5,%2,%0" \
1450 : "=r" ((UDItype)(wh)), \
1451 "=&r" ((UDItype)(wl)), \
1452 "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \
1453 : "r" ((UDItype)(u)), \
1454 "r" ((UDItype)(v)) \
1455 __CLOBBER_CC); \
1456 } while (0)
1457#define UMUL_TIME 96
1458#define UDIV_TIME 230
1459#endif /* sparc64 */
1460
1461#if defined (__vax__) && W_TYPE_SIZE == 32
1462#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1463 __asm__ ("addl2 %5,%1\n\tadwc %3,%0" \
1464 : "=g" ((USItype) (sh)), \
1465 "=&g" ((USItype) (sl)) \
1466 : "%0" ((USItype) (ah)), \
1467 "g" ((USItype) (bh)), \
1468 "%1" ((USItype) (al)), \
1469 "g" ((USItype) (bl)))
1470#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1471 __asm__ ("subl2 %5,%1\n\tsbwc %3,%0" \
1472 : "=g" ((USItype) (sh)), \
1473 "=&g" ((USItype) (sl)) \
1474 : "0" ((USItype) (ah)), \
1475 "g" ((USItype) (bh)), \
1476 "1" ((USItype) (al)), \
1477 "g" ((USItype) (bl)))
1478#define umul_ppmm(xh, xl, m0, m1) \
1479 do { \
1480 union { \
1481 UDItype __ll; \
1482 struct {USItype __l, __h;} __i; \
1483 } __xx; \
1484 USItype __m0 = (m0), __m1 = (m1); \
1485 __asm__ ("emul %1,%2,$0,%0" \
1486 : "=r" (__xx.__ll) \
1487 : "g" (__m0), \
1488 "g" (__m1)); \
1489 (xh) = __xx.__i.__h; \
1490 (xl) = __xx.__i.__l; \
1491 (xh) += ((((SItype) __m0 >> 31) & __m1) \
1492 + (((SItype) __m1 >> 31) & __m0)); \
1493 } while (0)
1494#define sdiv_qrnnd(q, r, n1, n0, d) \
1495 do { \
1496 union {DItype __ll; \
1497 struct {SItype __l, __h;} __i; \
1498 } __xx; \
1499 __xx.__i.__h = n1; __xx.__i.__l = n0; \
1500 __asm__ ("ediv %3,%2,%0,%1" \
1501 : "=g" (q), "=g" (r) \
1502 : "g" (__xx.__ll), "g" (d)); \
1503 } while (0)
1504#endif /* __vax__ */
1505
1506#ifdef _TMS320C6X
1507#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1508 do \
1509 { \
1510 UDItype __ll; \
1511 __asm__ ("addu .l1 %1, %2, %0" \
1512 : "=a" (__ll) : "a" (al), "a" (bl)); \
1513 (sl) = (USItype)__ll; \
1514 (sh) = ((USItype)(__ll >> 32)) + (ah) + (bh); \
1515 } \
1516 while (0)
1517
1518#ifdef _TMS320C6400_PLUS
1519#define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
1520#define umul_ppmm(w1, w0, u, v) \
1521 do { \
1522 UDItype __x = (UDItype) (USItype) (u) * (USItype) (v); \
1523 (w1) = (USItype) (__x >> 32); \
1524 (w0) = (USItype) (__x); \
1525 } while (0)
1526#endif /* _TMS320C6400_PLUS */
1527
1528#define count_leading_zeros(count, x) ((count) = __builtin_clz (x))
1529#ifdef _TMS320C6400
1530#define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
1531#endif
1532#define UMUL_TIME 4
1533#define UDIV_TIME 40
1534#endif /* _TMS320C6X */
1535
1536#if defined (__xtensa__) && W_TYPE_SIZE == 32
1537/* This code is not Xtensa-configuration-specific, so rely on the compiler
1538 to expand builtin functions depending on what configuration features
1539 are available. This avoids library calls when the operation can be
1540 performed in-line. */
1541#define umul_ppmm(w1, w0, u, v) \
1542 do { \
1543 DWunion __w; \
1544 __w.ll = __builtin_umulsidi3 (u, v); \
1545 w1 = __w.s.high; \
1546 w0 = __w.s.low; \
1547 } while (0)
1548#define __umulsidi3(u, v) __builtin_umulsidi3 (u, v)
1549#define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
1550#define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
1551#endif /* __xtensa__ */
1552
1553#if defined xstormy16
1554extern UHItype __stormy16_count_leading_zeros (UHItype);
1555#define count_leading_zeros(count, x) \
1556 do \
1557 { \
1558 UHItype size; \
1559 \
1560 /* We assume that W_TYPE_SIZE is a multiple of 16... */ \
1561 for ((count) = 0, size = W_TYPE_SIZE; size; size -= 16) \
1562 { \
1563 UHItype c; \
1564 \
1565 c = __clzhi2 ((x) >> (size - 16)); \
1566 (count) += c; \
1567 if (c != 16) \
1568 break; \
1569 } \
1570 } \
1571 while (0)
1572#define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
1573#endif
1574
1575#if defined (__z8000__) && W_TYPE_SIZE == 16
1576#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1577 __asm__ ("add %H1,%H5\n\tadc %H0,%H3" \
1578 : "=r" ((unsigned int)(sh)), \
1579 "=&r" ((unsigned int)(sl)) \
1580 : "%0" ((unsigned int)(ah)), \
1581 "r" ((unsigned int)(bh)), \
1582 "%1" ((unsigned int)(al)), \
1583 "rQR" ((unsigned int)(bl)))
1584#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1585 __asm__ ("sub %H1,%H5\n\tsbc %H0,%H3" \
1586 : "=r" ((unsigned int)(sh)), \
1587 "=&r" ((unsigned int)(sl)) \
1588 : "0" ((unsigned int)(ah)), \
1589 "r" ((unsigned int)(bh)), \
1590 "1" ((unsigned int)(al)), \
1591 "rQR" ((unsigned int)(bl)))
1592#define umul_ppmm(xh, xl, m0, m1) \
1593 do { \
1594 union {long int __ll; \
1595 struct {unsigned int __h, __l;} __i; \
1596 } __xx; \
1597 unsigned int __m0 = (m0), __m1 = (m1); \
1598 __asm__ ("mult %S0,%H3" \
1599 : "=r" (__xx.__i.__h), \
1600 "=r" (__xx.__i.__l) \
1601 : "%1" (__m0), \
1602 "rQR" (__m1)); \
1603 (xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
1604 (xh) += ((((signed int) __m0 >> 15) & __m1) \
1605 + (((signed int) __m1 >> 15) & __m0)); \
1606 } while (0)
1607#endif /* __z8000__ */
1608
1609#endif /* __GNUC__ */
1610
1611/* If this machine has no inline assembler, use C macros. */
1612
1613#if !defined (add_ssaaaa)
1614#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
1615 do { \
1616 UWtype __x; \
1617 __x = (al) + (bl); \
1618 (sh) = (ah) + (bh) + (__x < (al)); \
1619 (sl) = __x; \
1620 } while (0)
1621#endif
1622
1623#if !defined (sub_ddmmss)
1624#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
1625 do { \
1626 UWtype __x; \
1627 __x = (al) - (bl); \
1628 (sh) = (ah) - (bh) - (__x > (al)); \
1629 (sl) = __x; \
1630 } while (0)
1631#endif
1632
1633/* If we lack umul_ppmm but have smul_ppmm, define umul_ppmm in terms of
1634 smul_ppmm. */
1635#if !defined (umul_ppmm) && defined (smul_ppmm)
1636#define umul_ppmm(w1, w0, u, v) \
1637 do { \
1638 UWtype __w1; \
1639 UWtype __xm0 = (u), __xm1 = (v); \
1640 smul_ppmm (__w1, w0, __xm0, __xm1); \
1641 (w1) = __w1 + (-(__xm0 >> (W_TYPE_SIZE - 1)) & __xm1) \
1642 + (-(__xm1 >> (W_TYPE_SIZE - 1)) & __xm0); \
1643 } while (0)
1644#endif
1645
1646/* If we still don't have umul_ppmm, define it using plain C. */
1647#if !defined (umul_ppmm)
1648#define umul_ppmm(w1, w0, u, v) \
1649 do { \
1650 UWtype __x0, __x1, __x2, __x3; \
1651 UHWtype __ul, __vl, __uh, __vh; \
1652 \
1653 __ul = __ll_lowpart (u); \
1654 __uh = __ll_highpart (u); \
1655 __vl = __ll_lowpart (v); \
1656 __vh = __ll_highpart (v); \
1657 \
1658 __x0 = (UWtype) __ul * __vl; \
1659 __x1 = (UWtype) __ul * __vh; \
1660 __x2 = (UWtype) __uh * __vl; \
1661 __x3 = (UWtype) __uh * __vh; \
1662 \
1663 __x1 += __ll_highpart (__x0);/* this can't give carry */ \
1664 __x1 += __x2; /* but this indeed can */ \
1665 if (__x1 < __x2) /* did we get it? */ \
1666 __x3 += __ll_B; /* yes, add it in the proper pos. */ \
1667 \
1668 (w1) = __x3 + __ll_highpart (__x1); \
1669 (w0) = __ll_lowpart (__x1) * __ll_B + __ll_lowpart (__x0); \
1670 } while (0)
1671#endif
1672
1673#if !defined (__umulsidi3)
1674#define __umulsidi3(u, v) \
1675 ({DWunion __w; \
1676 umul_ppmm (__w.s.high, __w.s.low, u, v); \
1677 __w.ll; })
1678#endif
1679
1680/* Define this unconditionally, so it can be used for debugging. */
1681#define __udiv_qrnnd_c(q, r, n1, n0, d) \
1682 do { \
1683 UWtype __d1, __d0, __q1, __q0; \
1684 UWtype __r1, __r0, __m; \
1685 __d1 = __ll_highpart (d); \
1686 __d0 = __ll_lowpart (d); \
1687 \
1688 __r1 = (n1) % __d1; \
1689 __q1 = (n1) / __d1; \
1690 __m = (UWtype) __q1 * __d0; \
1691 __r1 = __r1 * __ll_B | __ll_highpart (n0); \
1692 if (__r1 < __m) \
1693 { \
1694 __q1--, __r1 += (d); \
1695 if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
1696 if (__r1 < __m) \
1697 __q1--, __r1 += (d); \
1698 } \
1699 __r1 -= __m; \
1700 \
1701 __r0 = __r1 % __d1; \
1702 __q0 = __r1 / __d1; \
1703 __m = (UWtype) __q0 * __d0; \
1704 __r0 = __r0 * __ll_B | __ll_lowpart (n0); \
1705 if (__r0 < __m) \
1706 { \
1707 __q0--, __r0 += (d); \
1708 if (__r0 >= (d)) \
1709 if (__r0 < __m) \
1710 __q0--, __r0 += (d); \
1711 } \
1712 __r0 -= __m; \
1713 \
1714 (q) = (UWtype) __q1 * __ll_B | __q0; \
1715 (r) = __r0; \
1716 } while (0)
1717
1718/* If the processor has no udiv_qrnnd but sdiv_qrnnd, go through
1719 __udiv_w_sdiv (defined in libgcc or elsewhere). */
1720#if !defined (udiv_qrnnd) && defined (sdiv_qrnnd)
1721#define udiv_qrnnd(q, r, nh, nl, d) \
1722 do { \
1723 extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype); \
1724 UWtype __r; \
1725 (q) = __udiv_w_sdiv (&__r, nh, nl, d); \
1726 (r) = __r; \
1727 } while (0)
1728#endif
1729
1730/* If udiv_qrnnd was not defined for this processor, use __udiv_qrnnd_c. */
1731#if !defined (udiv_qrnnd)
1732#define UDIV_NEEDS_NORMALIZATION 1
1733#define udiv_qrnnd __udiv_qrnnd_c
1734#endif
1735
1736#if !defined (count_leading_zeros)
1737#define count_leading_zeros(count, x) \
1738 do { \
1739 UWtype __xr = (x); \
1740 UWtype __a; \
1741 \
1742 if (W_TYPE_SIZE <= 32) \
1743 { \
1744 __a = __xr < ((UWtype)1<<2*__BITS4) \
1745 ? (__xr < ((UWtype)1<<__BITS4) ? 0 : __BITS4) \
1746 : (__xr < ((UWtype)1<<3*__BITS4) ? 2*__BITS4 : 3*__BITS4); \
1747 } \
1748 else \
1749 { \
1750 for (__a = W_TYPE_SIZE - 8; __a > 0; __a -= 8) \
1751 if (((__xr >> __a) & 0xff) != 0) \
1752 break; \
1753 } \
1754 \
1755 (count) = W_TYPE_SIZE - (__clz_tab[__xr >> __a] + __a); \
1756 } while (0)
1757#define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
1758#endif
1759
1760#if !defined (count_trailing_zeros)
1761/* Define count_trailing_zeros using count_leading_zeros. The latter might be
1762 defined in asm, but if it is not, the C version above is good enough. */
1763#define count_trailing_zeros(count, x) \
1764 do { \
1765 UWtype __ctz_x = (x); \
1766 UWtype __ctz_c; \
1767 count_leading_zeros (__ctz_c, __ctz_x & -__ctz_x); \
1768 (count) = W_TYPE_SIZE - 1 - __ctz_c; \
1769 } while (0)
1770#endif
1771
1772#ifndef UDIV_NEEDS_NORMALIZATION
1773#define UDIV_NEEDS_NORMALIZATION 0
1774#endif
1775