Merge branch 'master' of ssh://crater.dragonflybsd.org/repository/git/dragonfly
[dragonfly.git] / contrib / gcc-3.4 / gcc / libgcc2.h
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1/* Header file for libgcc2.c. */
2/* Copyright (C) 2000, 2001
3 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
9Software Foundation; either version 2, or (at your option) any later
10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING. If not, write to the Free
19Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, USA. */
21
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. */
28
29
30#ifndef GCC_LIBGCC2_H
31#define GCC_LIBGCC2_H
32
33extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t);
34extern void __clear_cache (char *, char *);
35extern void __eprintf (const char *, const char *, unsigned int, const char *)
36 __attribute__ ((__noreturn__));
37
38struct exception_descriptor;
39extern short int __get_eh_table_language (struct exception_descriptor *);
40extern short int __get_eh_table_version (struct exception_descriptor *);
41
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
44 compiler is run. */
45
46#ifndef LIBGCC2_WORDS_BIG_ENDIAN
47#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
48#endif
49
50#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
51#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE
52#endif
53
54#ifndef MIN_UNITS_PER_WORD
55#define MIN_UNITS_PER_WORD UNITS_PER_WORD
56#endif
57
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. */
66
67typedef int QItype __attribute__ ((mode (QI)));
68typedef unsigned int UQItype __attribute__ ((mode (QI)));
69typedef int HItype __attribute__ ((mode (HI)));
70typedef 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. */
73typedef int SItype __attribute__ ((mode (SI)));
74typedef 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. */
77typedef int DItype __attribute__ ((mode (DI)));
78typedef 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. */
81typedef int TItype __attribute__ ((mode (TI)));
82typedef unsigned int UTItype __attribute__ ((mode (TI)));
83#endif
84#endif
85#endif
86
87#if BITS_PER_UNIT == 8
88
89typedef float SFtype __attribute__ ((mode (SF)));
90typedef float DFtype __attribute__ ((mode (DF)));
91
92#if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96
93typedef float XFtype __attribute__ ((mode (XF)));
94#endif
95#if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128
96typedef float TFtype __attribute__ ((mode (TF)));
97#endif
98
99#else /* BITS_PER_UNIT != 8 */
100
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. */
103
104#undef L_fixdfdi
105#undef L_fixsfdi
106#undef L_fixtfdi
107#undef L_fixunsdfdi
108#undef L_fixunsdfsi
109#undef L_fixunssfdi
110#undef L_fixunssfsi
111#undef L_fixunstfdi
112#undef L_fixunsxfdi
113#undef L_fixunsxfsi
114#undef L_fixxfdi
115#undef L_floatdidf
116#undef L_floatdisf
117#undef L_floatditf
118#undef L_floatdixf
119
120#endif /* BITS_PER_UNIT != 8 */
121
122typedef int word_type __attribute__ ((mode (__word__)));
123
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. */
129
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
137
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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
146 if it existed. */
147
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148#if MIN_UNITS_PER_WORD > 4
149#define W_TYPE_SIZE (8 * BITS_PER_UNIT)
150#define Wtype DItype
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
1c1138ce 158#define COMPAT_SIMODE_TRAPPING_ARITHMETIC
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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)
162#define Wtype SItype
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)
172#define Wtype HItype
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
180#else
181#define W_TYPE_SIZE BITS_PER_UNIT
182#define Wtype QItype
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
190#endif
191
192#define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1))
193#define Wtype_MIN (- Wtype_MAX - 1)
194
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,)
223
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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)
234
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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)
245
246extern DWtype __muldi3 (DWtype, DWtype);
247extern DWtype __divdi3 (DWtype, DWtype);
248extern UDWtype __udivdi3 (UDWtype, UDWtype);
249extern UDWtype __umoddi3 (UDWtype, UDWtype);
250extern DWtype __moddi3 (DWtype, DWtype);
251
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))
255extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *);
256#endif
257
258/* __negdi2 is static inline when building other libgcc2 portions. */
259#if !defined(L_divdi3) && !defined(L_moddi3)
260extern DWtype __negdi2 (DWtype);
261#endif
262
263extern DWtype __lshrdi3 (DWtype, word_type);
264extern DWtype __ashldi3 (DWtype, word_type);
265extern DWtype __ashrdi3 (DWtype, word_type);
266
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))
270extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);
271#endif
272
273extern word_type __cmpdi2 (DWtype, DWtype);
274extern word_type __ucmpdi2 (DWtype, DWtype);
275
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276extern Wtype __absvSI2 (Wtype);
277extern Wtype __addvSI3 (Wtype, Wtype);
278extern Wtype __subvSI3 (Wtype, Wtype);
279extern Wtype __mulvSI3 (Wtype, Wtype);
280extern Wtype __negvSI2 (Wtype);
281extern DWtype __absvDI2 (DWtype);
282extern DWtype __addvDI3 (DWtype, DWtype);
283extern DWtype __subvDI3 (DWtype, DWtype);
284extern DWtype __mulvDI3 (DWtype, DWtype);
285extern DWtype __negvDI2 (DWtype);
286
287#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
288extern SItype __absvsi2 (SItype);
289extern SItype __addvsi3 (SItype, SItype);
290extern SItype __subvsi3 (SItype, SItype);
291extern SItype __mulvsi3 (SItype, SItype);
292extern SItype __negvsi2 (SItype);
293#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
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294
295#if BITS_PER_UNIT == 8
296extern DWtype __fixdfdi (DFtype);
297extern DWtype __fixsfdi (SFtype);
298extern DFtype __floatdidf (DWtype);
299extern SFtype __floatdisf (DWtype);
300extern UWtype __fixunsdfSI (DFtype);
301extern UWtype __fixunssfSI (SFtype);
302extern DWtype __fixunsdfDI (DFtype);
303extern DWtype __fixunssfDI (SFtype);
304
305#if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96
306extern DWtype __fixxfdi (XFtype);
307extern DWtype __fixunsxfDI (XFtype);
308extern XFtype __floatdixf (DWtype);
309extern UWtype __fixunsxfSI (XFtype);
310#endif
311
312#if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128
313extern DWtype __fixunstfDI (TFtype);
314extern DWtype __fixtfdi (TFtype);
315extern TFtype __floatditf (DWtype);
316#endif
317#endif /* BITS_PER_UNIT == 8 */
318
319/* DWstructs are pairs of Wtype values in the order determined by
320 LIBGCC2_WORDS_BIG_ENDIAN. */
321
322#if LIBGCC2_WORDS_BIG_ENDIAN
323 struct DWstruct {Wtype high, low;};
324#else
325 struct DWstruct {Wtype low, high;};
326#endif
327
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'. */
331
332typedef union
333{
334 struct DWstruct s;
335 DWtype ll;
336} DWunion;
337
338#include "longlong.h"
339
340#endif /* ! GCC_LIBGCC2_H */