1 /* Header file for libgcc2.c. */
2 /* Copyright (C) 2000-2013 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 3, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 Under Section 7 of GPL version 3, you are granted additional
17 permissions described in the GCC Runtime Library Exception, version
18 3.1, as published by the Free Software Foundation.
20 You should have received a copy of the GNU General Public License and
21 a copy of the GCC Runtime Library Exception along with this program;
22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 <http://www.gnu.org/licenses/>. */
29 #pragma GCC visibility push(default)
32 extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t);
33 extern void __clear_cache (char *, char *);
34 extern void __eprintf (const char *, const char *, unsigned int, const char *)
35 __attribute__ ((__noreturn__));
37 #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
38 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
41 #ifndef LIBGCC2_HAS_SF_MODE
42 #define LIBGCC2_HAS_SF_MODE (BITS_PER_UNIT == 8)
45 #ifndef LIBGCC2_HAS_DF_MODE
46 #define LIBGCC2_HAS_DF_MODE \
48 && (__SIZEOF_DOUBLE__ * __CHAR_BIT__ == 64 \
49 || LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64))
52 #ifndef LIBGCC2_HAS_XF_MODE
53 #define LIBGCC2_HAS_XF_MODE \
54 (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)
57 #ifndef LIBGCC2_HAS_TF_MODE
58 #define LIBGCC2_HAS_TF_MODE \
59 (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)
63 #if LIBGCC2_HAS_SF_MODE
64 #define SF_SIZE FLT_MANT_DIG
71 #if LIBGCC2_HAS_DF_MODE
72 #if __SIZEOF_DOUBLE__ * __CHAR_BIT__ == 64
73 #define DF_SIZE DBL_MANT_DIG
74 #elif LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64
75 #define DF_SIZE LDBL_MANT_DIG
85 #if LIBGCC2_HAS_XF_MODE
86 #define XF_SIZE LDBL_MANT_DIG
93 #if LIBGCC2_HAS_TF_MODE
94 #define TF_SIZE LDBL_MANT_DIG
100 /* FIXME: This #ifdef probably should be removed, ie. enable the test
102 /* Don't use IBM Extended Double TFmode for TI->SF calculations.
103 The conversion from long double to float suffers from double
104 rounding, because we convert via double. In other cases, going
105 through the software fp routines is much slower than the fallback. */
107 #define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE == 106)
108 #elif defined(WIDEST_HARDWARE_FP_SIZE)
109 #define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE > WIDEST_HARDWARE_FP_SIZE)
111 #define AVOID_FP_TYPE_CONVERSION(SIZE) 0
114 /* In the first part of this file, we are interfacing to calls generated
115 by the compiler itself. These calls pass values into these routines
116 which have very specific modes (rather than very specific types), and
117 these compiler-generated calls also expect any return values to have
118 very specific modes (rather than very specific types). Thus, we need
119 to avoid using regular C language type names in this part of the file
120 because the sizes for those types can be configured to be anything.
121 Instead we use the following special type names. */
123 typedef int QItype __attribute__ ((mode (QI)));
124 typedef unsigned int UQItype __attribute__ ((mode (QI)));
125 typedef int HItype __attribute__ ((mode (HI)));
126 typedef unsigned int UHItype __attribute__ ((mode (HI)));
127 #if MIN_UNITS_PER_WORD > 1
128 /* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1. */
129 typedef int SItype __attribute__ ((mode (SI)));
130 typedef unsigned int USItype __attribute__ ((mode (SI)));
131 #if __SIZEOF_LONG_LONG__ > 4
132 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2. */
133 typedef int DItype __attribute__ ((mode (DI)));
134 typedef unsigned int UDItype __attribute__ ((mode (DI)));
135 #if MIN_UNITS_PER_WORD > 4
136 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4. */
137 typedef int TItype __attribute__ ((mode (TI)));
138 typedef unsigned int UTItype __attribute__ ((mode (TI)));
143 #if LIBGCC2_HAS_SF_MODE
144 typedef float SFtype __attribute__ ((mode (SF)));
145 typedef _Complex float SCtype __attribute__ ((mode (SC)));
147 #if LIBGCC2_HAS_DF_MODE
148 typedef float DFtype __attribute__ ((mode (DF)));
149 typedef _Complex float DCtype __attribute__ ((mode (DC)));
151 #if LIBGCC2_HAS_XF_MODE
152 typedef float XFtype __attribute__ ((mode (XF)));
153 typedef _Complex float XCtype __attribute__ ((mode (XC)));
155 #if LIBGCC2_HAS_TF_MODE
156 typedef float TFtype __attribute__ ((mode (TF)));
157 typedef _Complex float TCtype __attribute__ ((mode (TC)));
160 typedef int cmp_return_type __attribute__((mode (__libgcc_cmp_return__)));
161 typedef int shift_count_type __attribute__((mode (__libgcc_shift_count__)));
163 /* Make sure that we don't accidentally use any normal C language built-in
164 type names in the first part of this file. Instead we want to use *only*
165 the type names defined above. The following macro definitions insure
166 that if we *do* accidentally use some normal C language built-in type name,
167 we will get a syntax error. */
169 #define char bogus_type
170 #define short bogus_type
171 #define int bogus_type
172 #define long bogus_type
173 #define unsigned bogus_type
174 #define float bogus_type
175 #define double bogus_type
177 /* Versions prior to 3.4.4 were not taking into account the word size for
178 the 5 trapping arithmetic functions absv, addv, subv, mulv and negv. As
179 a consequence, the si and di variants were always and the only ones emitted.
180 To maintain backward compatibility, COMPAT_SIMODE_TRAPPING_ARITHMETIC is
181 defined on platforms where it makes sense to still have the si variants
182 emitted. As a bonus, their implementation is now correct. Note that the
183 same mechanism should have been implemented for the di variants, but it
184 turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC
187 #if LIBGCC2_UNITS_PER_WORD == 8
188 #define W_TYPE_SIZE (8 * BITS_PER_UNIT)
190 #define UWtype UDItype
191 #define HWtype DItype
192 #define UHWtype UDItype
193 #define DWtype TItype
194 #define UDWtype UTItype
195 #ifdef LIBGCC2_GNU_PREFIX
196 #define __NW(a,b) __gnu_ ## a ## di ## b
197 #define __NDW(a,b) __gnu_ ## a ## ti ## b
199 #define __NW(a,b) __ ## a ## di ## b
200 #define __NDW(a,b) __ ## a ## ti ## b
202 #define COMPAT_SIMODE_TRAPPING_ARITHMETIC
203 #elif LIBGCC2_UNITS_PER_WORD == 4
204 #define W_TYPE_SIZE (4 * BITS_PER_UNIT)
206 #define UWtype USItype
207 #define HWtype SItype
208 #define UHWtype USItype
209 #define DWtype DItype
210 #define UDWtype UDItype
211 #ifdef LIBGCC2_GNU_PREFIX
212 #define __NW(a,b) __gnu_ ## a ## si ## b
213 #define __NDW(a,b) __gnu_ ## a ## di ## b
215 #define __NW(a,b) __ ## a ## si ## b
216 #define __NDW(a,b) __ ## a ## di ## b
218 #elif LIBGCC2_UNITS_PER_WORD == 2
219 #define W_TYPE_SIZE (2 * BITS_PER_UNIT)
221 #define UWtype UHItype
222 #define HWtype HItype
223 #define UHWtype UHItype
224 #define DWtype SItype
225 #define UDWtype USItype
226 #ifdef LIBGCC2_GNU_PREFIX
227 #define __NW(a,b) __gnu_ ## a ## hi ## b
228 #define __NDW(a,b) __gnu_ ## a ## si ## b
230 #define __NW(a,b) __ ## a ## hi ## b
231 #define __NDW(a,b) __ ## a ## si ## b
234 #define W_TYPE_SIZE BITS_PER_UNIT
236 #define UWtype UQItype
237 #define HWtype QItype
238 #define UHWtype UQItype
239 #define DWtype HItype
240 #define UDWtype UHItype
241 #ifdef LIBGCC2_GNU_PREFIX
242 #define __NW(a,b) __gnu_ ## a ## qi ## b
243 #define __NDW(a,b) __gnu_ ## a ## hi ## b
245 #define __NW(a,b) __ ## a ## qi ## b
246 #define __NDW(a,b) __ ## a ## hi ## b
250 #ifdef LIBGCC2_GNU_PREFIX
251 #define __N(a) __gnu_ ## a
253 #define __N(a) __ ## a
255 #define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1))
256 #define Wtype_MIN (- Wtype_MAX - 1)
259 # define Wtype_MAXp1_F 0x1p8f
260 #elif W_TYPE_SIZE == 16
261 # define Wtype_MAXp1_F 0x1p16f
262 #elif W_TYPE_SIZE == 32
263 # define Wtype_MAXp1_F 0x1p32f
264 #elif W_TYPE_SIZE == 64
265 # define Wtype_MAXp1_F 0x1p64f
267 # error "expand the table"
270 #define __muldi3 __NDW(mul,3)
271 #define __divdi3 __NDW(div,3)
272 #define __udivdi3 __NDW(udiv,3)
273 #define __moddi3 __NDW(mod,3)
274 #define __umoddi3 __NDW(umod,3)
275 #define __negdi2 __NDW(neg,2)
276 #define __lshrdi3 __NDW(lshr,3)
277 #define __ashldi3 __NDW(ashl,3)
278 #define __ashrdi3 __NDW(ashr,3)
279 #define __cmpdi2 __NDW(cmp,2)
280 #define __ucmpdi2 __NDW(ucmp,2)
281 #define __udivmoddi4 __NDW(udivmod,4)
282 #define __fixunstfDI __NDW(fixunstf,)
283 #define __fixtfdi __NDW(fixtf,)
284 #define __fixunsxfDI __NDW(fixunsxf,)
285 #define __fixxfdi __NDW(fixxf,)
286 #define __fixunsdfDI __NDW(fixunsdf,)
287 #define __fixdfdi __NDW(fixdf,)
288 #define __fixunssfDI __NDW(fixunssf,)
289 #define __fixsfdi __NDW(fixsf,)
290 #define __floatdixf __NDW(float,xf)
291 #define __floatditf __NDW(float,tf)
292 #define __floatdidf __NDW(float,df)
293 #define __floatdisf __NDW(float,sf)
294 #define __floatundixf __NDW(floatun,xf)
295 #define __floatunditf __NDW(floatun,tf)
296 #define __floatundidf __NDW(floatun,df)
297 #define __floatundisf __NDW(floatun,sf)
298 #define __fixunsxfSI __NW(fixunsxf,)
299 #define __fixunstfSI __NW(fixunstf,)
300 #define __fixunsdfSI __NW(fixunsdf,)
301 #define __fixunssfSI __NW(fixunssf,)
303 #define __absvSI2 __NW(absv,2)
304 #define __addvSI3 __NW(addv,3)
305 #define __subvSI3 __NW(subv,3)
306 #define __mulvSI3 __NW(mulv,3)
307 #define __negvSI2 __NW(negv,2)
308 #define __absvDI2 __NDW(absv,2)
309 #define __addvDI3 __NDW(addv,3)
310 #define __subvDI3 __NDW(subv,3)
311 #define __mulvDI3 __NDW(mulv,3)
312 #define __negvDI2 __NDW(negv,2)
314 #define __ffsSI2 __NW(ffs,2)
315 #define __clzSI2 __NW(clz,2)
316 #define __ctzSI2 __NW(ctz,2)
317 #define __clrsbSI2 __NW(clrsb,2)
318 #define __popcountSI2 __NW(popcount,2)
319 #define __paritySI2 __NW(parity,2)
320 #define __ffsDI2 __NDW(ffs,2)
321 #define __clzDI2 __NDW(clz,2)
322 #define __ctzDI2 __NDW(ctz,2)
323 #define __clrsbDI2 __NDW(clrsb,2)
324 #define __popcountDI2 __NDW(popcount,2)
325 #define __parityDI2 __NDW(parity,2)
327 #define __clz_tab __N(clz_tab)
328 #define __bswapsi2 __N(bswapsi2)
329 #define __bswapdi2 __N(bswapdi2)
330 #define __udiv_w_sdiv __N(udiv_w_sdiv)
331 #define __clear_cache __N(clear_cache)
332 #define __enable_execute_stack __N(enable_execute_stack)
335 #define __powisf2 __N(powisf2)
338 #define __powidf2 __N(powidf2)
341 #define __powitf2 __N(powitf2)
344 #define __powixf2 __N(powixf2)
347 #define __mulsc3 __N(mulsc3)
350 #define __muldc3 __N(muldc3)
353 #define __mulxc3 __N(mulxc3)
356 #define __multc3 __N(multc3)
359 #define __divsc3 __N(divsc3)
362 #define __divdc3 __N(divdc3)
365 #define __divxc3 __N(divxc3)
368 #define __divtc3 __N(divtc3)
371 extern DWtype __muldi3 (DWtype, DWtype);
372 extern DWtype __divdi3 (DWtype, DWtype);
373 extern UDWtype __udivdi3 (UDWtype, UDWtype);
374 extern UDWtype __umoddi3 (UDWtype, UDWtype);
375 extern DWtype __moddi3 (DWtype, DWtype);
377 /* __udivmoddi4 is static inline when building other libgcc2 portions. */
378 #if (!defined (L_udivdi3) && !defined (L_divdi3) && \
379 !defined (L_umoddi3) && !defined (L_moddi3))
380 extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *);
383 /* __negdi2 is static inline when building other libgcc2 portions. */
384 #if !defined(L_divdi3) && !defined(L_moddi3)
385 extern DWtype __negdi2 (DWtype);
388 extern DWtype __lshrdi3 (DWtype, shift_count_type);
389 extern DWtype __ashldi3 (DWtype, shift_count_type);
390 extern DWtype __ashrdi3 (DWtype, shift_count_type);
392 /* __udiv_w_sdiv is static inline when building other libgcc2 portions. */
393 #if (!defined(L_udivdi3) && !defined(L_divdi3) && \
394 !defined(L_umoddi3) && !defined(L_moddi3))
395 extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);
398 extern cmp_return_type __cmpdi2 (DWtype, DWtype);
399 extern cmp_return_type __ucmpdi2 (DWtype, DWtype);
401 #if MIN_UNITS_PER_WORD > 1
402 extern SItype __bswapsi2 (SItype);
404 #if __SIZEOF_LONG_LONG__ > 4
405 extern DItype __bswapdi2 (DItype);
408 extern Wtype __absvSI2 (Wtype);
409 extern Wtype __addvSI3 (Wtype, Wtype);
410 extern Wtype __subvSI3 (Wtype, Wtype);
411 extern Wtype __mulvSI3 (Wtype, Wtype);
412 extern Wtype __negvSI2 (Wtype);
413 extern DWtype __absvDI2 (DWtype);
414 extern DWtype __addvDI3 (DWtype, DWtype);
415 extern DWtype __subvDI3 (DWtype, DWtype);
416 extern DWtype __mulvDI3 (DWtype, DWtype);
417 extern DWtype __negvDI2 (DWtype);
419 #ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
420 #define __absvsi2 __N(absvsi2)
421 #define __negvsi2 __N(negvsi2)
422 #define __addvsi3 __N(addvsi3)
423 #define __subvsi3 __N(subvsi3)
424 #define __mulvsi3 __N(mulvsi3)
426 extern SItype __absvsi2 (SItype);
427 extern SItype __addvsi3 (SItype, SItype);
428 extern SItype __subvsi3 (SItype, SItype);
429 extern SItype __mulvsi3 (SItype, SItype);
430 extern SItype __negvsi2 (SItype);
431 #endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
434 #if LIBGCC2_HAS_SF_MODE
435 extern DWtype __fixsfdi (SFtype);
436 extern SFtype __floatdisf (DWtype);
437 extern SFtype __floatundisf (UDWtype);
438 extern UWtype __fixunssfSI (SFtype);
439 extern UDWtype __fixunssfDI (SFtype);
440 extern SFtype __powisf2 (SFtype, int);
441 extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype);
442 extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);
444 #if LIBGCC2_HAS_DF_MODE
445 extern DWtype __fixdfdi (DFtype);
446 extern DFtype __floatdidf (DWtype);
447 extern DFtype __floatundidf (UDWtype);
448 extern UWtype __fixunsdfSI (DFtype);
449 extern UDWtype __fixunsdfDI (DFtype);
450 extern DFtype __powidf2 (DFtype, int);
451 extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype);
452 extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);
455 #if LIBGCC2_HAS_XF_MODE
456 extern DWtype __fixxfdi (XFtype);
457 extern UDWtype __fixunsxfDI (XFtype);
458 extern XFtype __floatdixf (DWtype);
459 extern XFtype __floatundixf (UDWtype);
460 extern UWtype __fixunsxfSI (XFtype);
461 extern XFtype __powixf2 (XFtype, int);
462 extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype);
463 extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype);
466 #if LIBGCC2_HAS_TF_MODE
467 extern UDWtype __fixunstfDI (TFtype);
468 extern DWtype __fixtfdi (TFtype);
469 extern TFtype __floatditf (DWtype);
470 extern TFtype __floatunditf (UDWtype);
471 extern TFtype __powitf2 (TFtype, int);
472 extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype);
473 extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype);
475 #define int bogus_type
477 /* DWstructs are pairs of Wtype values in the order determined by
480 #if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
481 struct DWstruct {Wtype high, low;};
483 struct DWstruct {Wtype low, high;};
486 /* We need this union to unpack/pack DImode values, since we don't have
487 any arithmetic yet. Incoming DImode parameters are stored into the
488 `ll' field, and the unpacked result is read from the struct `s'. */
496 /* Defined for L_popcount_tab. Exported here because some targets may
497 want to use it for their own versions of the __popcount builtins. */
498 extern const UQItype __popcount_tab[256];
500 /* Defined for L_clz. Exported here because some targets may want to use
501 it for their own versions of the __clz builtins. It contains the bit
502 position of the first set bit for the numbers 0 - 255. This avoids the
503 need for a separate table for the __ctz builtins. */
504 extern const UQItype __clz_tab[256];
506 #include "longlong.h"
509 extern int __clzDI2 (UDWtype);
510 extern int __clzSI2 (UWtype);
511 extern int __ctzSI2 (UWtype);
512 extern int __ctzDI2 (UDWtype);
513 extern int __clrsbSI2 (Wtype);
514 extern int __clrsbDI2 (DWtype);
515 extern int __ffsSI2 (UWtype);
516 extern int __ffsDI2 (DWtype);
517 extern int __popcountSI2 (UWtype);
518 extern int __popcountDI2 (UDWtype);
519 extern int __paritySI2 (UWtype);
520 extern int __parityDI2 (UDWtype);
521 #define int bogus_type
523 extern void __enable_execute_stack (void *);
526 #pragma GCC visibility pop
529 #endif /* ! GCC_LIBGCC2_H */