1 /* Header file for libgcc2.c. */
2 /* Copyright (C) 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* As a special exception, if you link this library with other files,
23 some of which are compiled with GCC, to produce an executable,
24 this library does not by itself cause the resulting executable
25 to be covered by the GNU General Public License.
26 This exception does not however invalidate any other reasons why
27 the executable file might be covered by the GNU General Public License. */
33 extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t);
34 extern void __clear_cache (char *, char *);
35 extern void __eprintf (const char *, const char *, unsigned int, const char *)
36 __attribute__ ((__noreturn__
));
38 struct exception_descriptor
;
39 extern short int __get_eh_table_language (struct exception_descriptor
*);
40 extern short int __get_eh_table_version (struct exception_descriptor
*);
42 /* Permit the tm.h file to select the endianness to use just for this
43 file. This is used when the endianness is determined when the
46 #ifndef LIBGCC2_WORDS_BIG_ENDIAN
47 #define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
50 #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
51 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
54 #ifndef MIN_UNITS_PER_WORD
55 #define MIN_UNITS_PER_WORD UNITS_PER_WORD
58 /* In the first part of this file, we are interfacing to calls generated
59 by the compiler itself. These calls pass values into these routines
60 which have very specific modes (rather than very specific types), and
61 these compiler-generated calls also expect any return values to have
62 very specific modes (rather than very specific types). Thus, we need
63 to avoid using regular C language type names in this part of the file
64 because the sizes for those types can be configured to be anything.
65 Instead we use the following special type names. */
67 typedef int QItype
__attribute__ ((mode (QI
)));
68 typedef unsigned int UQItype
__attribute__ ((mode (QI
)));
69 typedef int HItype
__attribute__ ((mode (HI
)));
70 typedef unsigned int UHItype
__attribute__ ((mode (HI
)));
71 #if MIN_UNITS_PER_WORD > 1
72 /* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1. */
73 typedef int SItype
__attribute__ ((mode (SI
)));
74 typedef unsigned int USItype
__attribute__ ((mode (SI
)));
75 #if LONG_LONG_TYPE_SIZE > 32
76 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2. */
77 typedef int DItype
__attribute__ ((mode (DI
)));
78 typedef unsigned int UDItype
__attribute__ ((mode (DI
)));
79 #if MIN_UNITS_PER_WORD > 4
80 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4. */
81 typedef int TItype
__attribute__ ((mode (TI
)));
82 typedef unsigned int UTItype
__attribute__ ((mode (TI
)));
87 #if BITS_PER_UNIT == 8
89 typedef float SFtype
__attribute__ ((mode (SF
)));
90 typedef float DFtype
__attribute__ ((mode (DF
)));
92 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96
93 typedef float XFtype
__attribute__ ((mode (XF
)));
95 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128
96 typedef float TFtype
__attribute__ ((mode (TF
)));
99 #else /* BITS_PER_UNIT != 8 */
101 /* On dsp's there are usually qf/hf/tqf modes used instead of the above.
102 For now we don't support them in libgcc2.c. */
120 #endif /* BITS_PER_UNIT != 8 */
122 typedef int word_type
__attribute__ ((mode (__word__
)));
124 /* Make sure that we don't accidentally use any normal C language built-in
125 type names in the first part of this file. Instead we want to use *only*
126 the type names defined above. The following macro definitions insure
127 that if we *do* accidentally use some normal C language built-in type name,
128 we will get a syntax error. */
130 #define char bogus_type
131 #define short bogus_type
132 #define int bogus_type
133 #define long bogus_type
134 #define unsigned bogus_type
135 #define float bogus_type
136 #define double bogus_type
138 /* Versions prior to 3.4.4 were not taking into account the word size for
139 the 5 trapping arithmetic functions absv, addv, subv, mulv and negv. As
140 a consequence, the si and di variants were always and the only ones emitted.
141 To maintain backward compatibility, COMPAT_SIMODE_TRAPPING_ARITHMETIC is
142 defined on platforms where it makes sense to still have the si variants
143 emitted. As a bonus, their implementation is now correct. Note that the
144 same mechanism should have been implemented for the di variants, but it
145 turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC
148 #if MIN_UNITS_PER_WORD > 4
149 #define W_TYPE_SIZE (8 * BITS_PER_UNIT)
151 #define UWtype UDItype
152 #define HWtype DItype
153 #define UHWtype UDItype
154 #define DWtype TItype
155 #define UDWtype UTItype
156 #define __NW(a,b) __ ## a ## di ## b
157 #define __NDW(a,b) __ ## a ## ti ## b
158 #define COMPAT_SIMODE_TRAPPING_ARITHMETIC
159 #elif MIN_UNITS_PER_WORD > 2 \
160 || (MIN_UNITS_PER_WORD > 1 && LONG_LONG_TYPE_SIZE > 32)
161 #define W_TYPE_SIZE (4 * BITS_PER_UNIT)
163 #define UWtype USItype
164 #define HWtype SItype
165 #define UHWtype USItype
166 #define DWtype DItype
167 #define UDWtype UDItype
168 #define __NW(a,b) __ ## a ## si ## b
169 #define __NDW(a,b) __ ## a ## di ## b
170 #elif MIN_UNITS_PER_WORD > 1
171 #define W_TYPE_SIZE (2 * BITS_PER_UNIT)
173 #define UWtype UHItype
174 #define HWtype HItype
175 #define UHWtype UHItype
176 #define DWtype SItype
177 #define UDWtype USItype
178 #define __NW(a,b) __ ## a ## hi ## b
179 #define __NDW(a,b) __ ## a ## si ## b
181 #define W_TYPE_SIZE BITS_PER_UNIT
183 #define UWtype UQItype
184 #define HWtype QItype
185 #define UHWtype UQItype
186 #define DWtype HItype
187 #define UDWtype UHItype
188 #define __NW(a,b) __ ## a ## qi ## b
189 #define __NDW(a,b) __ ## a ## hi ## b
192 #define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1))
193 #define Wtype_MIN (- Wtype_MAX - 1)
195 #define __muldi3 __NDW(mul,3)
196 #define __divdi3 __NDW(div,3)
197 #define __udivdi3 __NDW(udiv,3)
198 #define __moddi3 __NDW(mod,3)
199 #define __umoddi3 __NDW(umod,3)
200 #define __negdi2 __NDW(neg,2)
201 #define __lshrdi3 __NDW(lshr,3)
202 #define __ashldi3 __NDW(ashl,3)
203 #define __ashrdi3 __NDW(ashr,3)
204 #define __cmpdi2 __NDW(cmp,2)
205 #define __ucmpdi2 __NDW(ucmp,2)
206 #define __udivmoddi4 __NDW(udivmod,4)
207 #define __fixunstfDI __NDW(fixunstf,)
208 #define __fixtfdi __NDW(fixtf,)
209 #define __fixunsxfDI __NDW(fixunsxf,)
210 #define __fixxfdi __NDW(fixxf,)
211 #define __fixunsdfDI __NDW(fixunsdf,)
212 #define __fixdfdi __NDW(fixdf,)
213 #define __fixunssfDI __NDW(fixunssf,)
214 #define __fixsfdi __NDW(fixsf,)
215 #define __floatdixf __NDW(float,xf)
216 #define __floatditf __NDW(float,tf)
217 #define __floatdidf __NDW(float,df)
218 #define __floatdisf __NDW(float,sf)
219 #define __fixunsxfSI __NW(fixunsxf,)
220 #define __fixunstfSI __NW(fixunstf,)
221 #define __fixunsdfSI __NW(fixunsdf,)
222 #define __fixunssfSI __NW(fixunssf,)
224 #define __absvSI2 __NW(absv,2)
225 #define __addvSI3 __NW(addv,3)
226 #define __subvSI3 __NW(subv,3)
227 #define __mulvSI3 __NW(mulv,3)
228 #define __negvSI2 __NW(negv,2)
229 #define __absvDI2 __NDW(absv,2)
230 #define __addvDI3 __NDW(addv,3)
231 #define __subvDI3 __NDW(subv,3)
232 #define __mulvDI3 __NDW(mulv,3)
233 #define __negvDI2 __NDW(negv,2)
235 #define __ffsSI2 __NW(ffs,2)
236 #define __clzSI2 __NW(clz,2)
237 #define __ctzSI2 __NW(ctz,2)
238 #define __popcountSI2 __NW(popcount,2)
239 #define __paritySI2 __NW(parity,2)
240 #define __ffsDI2 __NDW(ffs,2)
241 #define __clzDI2 __NDW(clz,2)
242 #define __ctzDI2 __NDW(ctz,2)
243 #define __popcountDI2 __NDW(popcount,2)
244 #define __parityDI2 __NDW(parity,2)
246 extern DWtype
__muldi3 (DWtype
, DWtype
);
247 extern DWtype
__divdi3 (DWtype
, DWtype
);
248 extern UDWtype
__udivdi3 (UDWtype
, UDWtype
);
249 extern UDWtype
__umoddi3 (UDWtype
, UDWtype
);
250 extern DWtype
__moddi3 (DWtype
, DWtype
);
252 /* __udivmoddi4 is static inline when building other libgcc2 portions. */
253 #if (!defined (L_udivdi3) && !defined (L_divdi3) && \
254 !defined (L_umoddi3) && !defined (L_moddi3))
255 extern UDWtype
__udivmoddi4 (UDWtype
, UDWtype
, UDWtype
*);
258 /* __negdi2 is static inline when building other libgcc2 portions. */
259 #if !defined(L_divdi3) && !defined(L_moddi3)
260 extern DWtype
__negdi2 (DWtype
);
263 extern DWtype
__lshrdi3 (DWtype
, word_type
);
264 extern DWtype
__ashldi3 (DWtype
, word_type
);
265 extern DWtype
__ashrdi3 (DWtype
, word_type
);
267 /* __udiv_w_sdiv is static inline when building other libgcc2 portions. */
268 #if (!defined(L_udivdi3) && !defined(L_divdi3) && \
269 !defined(L_umoddi3) && !defined(L_moddi3))
270 extern UWtype
__udiv_w_sdiv (UWtype
*, UWtype
, UWtype
, UWtype
);
273 extern word_type
__cmpdi2 (DWtype
, DWtype
);
274 extern word_type
__ucmpdi2 (DWtype
, DWtype
);
276 extern Wtype
__absvSI2 (Wtype
);
277 extern Wtype
__addvSI3 (Wtype
, Wtype
);
278 extern Wtype
__subvSI3 (Wtype
, Wtype
);
279 extern Wtype
__mulvSI3 (Wtype
, Wtype
);
280 extern Wtype
__negvSI2 (Wtype
);
281 extern DWtype
__absvDI2 (DWtype
);
282 extern DWtype
__addvDI3 (DWtype
, DWtype
);
283 extern DWtype
__subvDI3 (DWtype
, DWtype
);
284 extern DWtype
__mulvDI3 (DWtype
, DWtype
);
285 extern DWtype
__negvDI2 (DWtype
);
287 #ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
288 extern SItype
__absvsi2 (SItype
);
289 extern SItype
__addvsi3 (SItype
, SItype
);
290 extern SItype
__subvsi3 (SItype
, SItype
);
291 extern SItype
__mulvsi3 (SItype
, SItype
);
292 extern SItype
__negvsi2 (SItype
);
293 #endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
295 #if BITS_PER_UNIT == 8
296 extern DWtype
__fixdfdi (DFtype
);
297 extern DWtype
__fixsfdi (SFtype
);
298 extern DFtype
__floatdidf (DWtype
);
299 extern SFtype
__floatdisf (DWtype
);
300 extern UWtype
__fixunsdfSI (DFtype
);
301 extern UWtype
__fixunssfSI (SFtype
);
302 extern DWtype
__fixunsdfDI (DFtype
);
303 extern DWtype
__fixunssfDI (SFtype
);
305 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96
306 extern DWtype
__fixxfdi (XFtype
);
307 extern DWtype
__fixunsxfDI (XFtype
);
308 extern XFtype
__floatdixf (DWtype
);
309 extern UWtype
__fixunsxfSI (XFtype
);
312 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128
313 extern DWtype
__fixunstfDI (TFtype
);
314 extern DWtype
__fixtfdi (TFtype
);
315 extern TFtype
__floatditf (DWtype
);
317 #endif /* BITS_PER_UNIT == 8 */
319 /* DWstructs are pairs of Wtype values in the order determined by
320 LIBGCC2_WORDS_BIG_ENDIAN. */
322 #if LIBGCC2_WORDS_BIG_ENDIAN
323 struct DWstruct
{Wtype high
, low
;};
325 struct DWstruct
{Wtype low
, high
;};
328 /* We need this union to unpack/pack DImode values, since we don't have
329 any arithmetic yet. Incoming DImode parameters are stored into the
330 `ll' field, and the unpacked result is read from the struct `s'. */
338 #include "longlong.h"
340 #endif /* ! GCC_LIBGCC2_H */