1 /* Header file for libgcc2.c. */ 2 /* Copyright (C) 2000, 2001 3 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 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 10 version. 11 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 15 for more details. 16 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 20 02111-1307, 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 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__)); 37 38 struct bb; 39 extern void __bb_exit_func (void); 40 extern void __bb_init_func (struct bb *); 41 extern void __bb_fork_func (void); 42 43 #if LONG_TYPE_SIZE == GCOV_TYPE_SIZE 44 typedef long gcov_type; 45 #else 46 typedef long long gcov_type; 47 #endif 48 49 extern gcov_type *__bb_find_arc_counters (void); 50 51 struct exception_descriptor; 52 extern short int __get_eh_table_language (struct exception_descriptor *); 53 extern short int __get_eh_table_version (struct exception_descriptor *); 54 55 /* Permit the tm.h file to select the endianness to use just for this 56 file. This is used when the endianness is determined when the 57 compiler is run. */ 58 59 #ifndef LIBGCC2_WORDS_BIG_ENDIAN 60 #define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN 61 #endif 62 63 #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE 65 #endif 66 67 #ifndef MIN_UNITS_PER_WORD 68 #define MIN_UNITS_PER_WORD UNITS_PER_WORD 69 #endif 70 71 /* In the first part of this file, we are interfacing to calls generated 72 by the compiler itself. These calls pass values into these routines 73 which have very specific modes (rather than very specific types), and 74 these compiler-generated calls also expect any return values to have 75 very specific modes (rather than very specific types). Thus, we need 76 to avoid using regular C language type names in this part of the file 77 because the sizes for those types can be configured to be anything. 78 Instead we use the following special type names. */ 79 80 typedef int QItype __attribute__ ((mode (QI))); 81 typedef unsigned int UQItype __attribute__ ((mode (QI))); 82 typedef int HItype __attribute__ ((mode (HI))); 83 typedef unsigned int UHItype __attribute__ ((mode (HI))); 84 #if MIN_UNITS_PER_WORD > 1 85 /* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1 */ 86 typedef int SItype __attribute__ ((mode (SI))); 87 typedef unsigned int USItype __attribute__ ((mode (SI))); 88 #if LONG_LONG_TYPE_SIZE > 32 89 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2 */ 90 typedef int DItype __attribute__ ((mode (DI))); 91 typedef unsigned int UDItype __attribute__ ((mode (DI))); 92 #if MIN_UNITS_PER_WORD > 4 93 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4 */ 94 typedef int TItype __attribute__ ((mode (TI))); 95 typedef unsigned int UTItype __attribute__ ((mode (TI))); 96 #endif 97 #endif 98 #endif 99 100 #if BITS_PER_UNIT == 8 101 102 typedef float SFtype __attribute__ ((mode (SF))); 103 typedef float DFtype __attribute__ ((mode (DF))); 104 105 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96 106 typedef float XFtype __attribute__ ((mode (XF))); 107 #endif 108 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128 109 typedef float TFtype __attribute__ ((mode (TF))); 110 #endif 111 112 #else /* BITS_PER_UNIT != 8 */ 113 114 /* On dsp's there are usually qf/hf/tqf modes used instead of the above. 115 For now we don't support them in libgcc2.c. */ 116 117 #undef L_fixdfdi 118 #undef L_fixsfdi 119 #undef L_fixtfdi 120 #undef L_fixunsdfdi 121 #undef L_fixunsdfsi 122 #undef L_fixunssfdi 123 #undef L_fixunssfsi 124 #undef L_fixunstfdi 125 #undef L_fixunsxfdi 126 #undef L_fixunsxfsi 127 #undef L_fixxfdi 128 #undef L_floatdidf 129 #undef L_floatdisf 130 #undef L_floatditf 131 #undef L_floatdixf 132 133 #endif /* BITS_PER_UNIT != 8 */ 134 135 typedef int word_type __attribute__ ((mode (__word__))); 136 137 /* Make sure that we don't accidentally use any normal C language built-in 138 type names in the first part of this file. Instead we want to use *only* 139 the type names defined above. The following macro definitions insure 140 that if we *do* accidentally use some normal C language built-in type name, 141 we will get a syntax error. */ 142 143 #define char bogus_type 144 #define short bogus_type 145 #define int bogus_type 146 #define long bogus_type 147 #define unsigned bogus_type 148 #define float bogus_type 149 #define double bogus_type 150 151 #if MIN_UNITS_PER_WORD > 4 152 #define W_TYPE_SIZE (8 * BITS_PER_UNIT) 153 #define Wtype DItype 154 #define UWtype UDItype 155 #define HWtype DItype 156 #define UHWtype UDItype 157 #define DWtype TItype 158 #define UDWtype UTItype 159 #define __NW(a,b) __ ## a ## di ## b 160 #define __NDW(a,b) __ ## a ## ti ## b 161 #elif MIN_UNITS_PER_WORD > 2 \ 162 || (MIN_UNITS_PER_WORD > 1 && LONG_LONG_TYPE_SIZE > 32) 163 #define W_TYPE_SIZE (4 * BITS_PER_UNIT) 164 #define Wtype SItype 165 #define UWtype USItype 166 #define HWtype SItype 167 #define UHWtype USItype 168 #define DWtype DItype 169 #define UDWtype UDItype 170 #define __NW(a,b) __ ## a ## si ## b 171 #define __NDW(a,b) __ ## a ## di ## b 172 #elif MIN_UNITS_PER_WORD > 1 173 #define W_TYPE_SIZE (2 * BITS_PER_UNIT) 174 #define Wtype HItype 175 #define UWtype UHItype 176 #define HWtype HItype 177 #define UHWtype UHItype 178 #define DWtype SItype 179 #define UDWtype USItype 180 #define __NW(a,b) __ ## a ## hi ## b 181 #define __NDW(a,b) __ ## a ## si ## b 182 #else 183 #define W_TYPE_SIZE BITS_PER_UNIT 184 #define Wtype QItype 185 #define UWtype UQItype 186 #define HWtype QItype 187 #define UHWtype UQItype 188 #define DWtype HItype 189 #define UDWtype UHItype 190 #define __NW(a,b) __ ## a ## qi ## b 191 #define __NDW(a,b) __ ## a ## hi ## b 192 #endif 193 194 #define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1)) 195 #define Wtype_MIN (- Wtype_MAX - 1) 196 197 #define __muldi3 __NDW(mul,3) 198 #define __divdi3 __NDW(div,3) 199 #define __udivdi3 __NDW(udiv,3) 200 #define __moddi3 __NDW(mod,3) 201 #define __umoddi3 __NDW(umod,3) 202 #define __negdi2 __NDW(neg,2) 203 #define __lshrdi3 __NDW(lshr,3) 204 #define __ashldi3 __NDW(ashl,3) 205 #define __ashrdi3 __NDW(ashr,3) 206 #define __ffsdi2 __NDW(ffs,2) 207 #define __cmpdi2 __NDW(cmp,2) 208 #define __ucmpdi2 __NDW(ucmp,2) 209 #define __udivmoddi4 __NDW(udivmod,4) 210 #define __fixunstfDI __NDW(fixunstf,) 211 #define __fixtfdi __NDW(fixtf,) 212 #define __fixunsxfDI __NDW(fixunsxf,) 213 #define __fixxfdi __NDW(fixxf,) 214 #define __fixunsdfDI __NDW(fixunsdf,) 215 #define __fixdfdi __NDW(fixdf,) 216 #define __fixunssfDI __NDW(fixunssf,) 217 #define __fixsfdi __NDW(fixsf,) 218 #define __floatdixf __NDW(float,xf) 219 #define __floatditf __NDW(float,tf) 220 #define __floatdidf __NDW(float,df) 221 #define __floatdisf __NDW(float,sf) 222 #define __fixunsxfSI __NW(fixunsxf,) 223 #define __fixunstfSI __NW(fixunstf,) 224 #define __fixunsdfSI __NW(fixunsdf,) 225 #define __fixunssfSI __NW(fixunssf,) 226 227 extern DWtype __muldi3 (DWtype, DWtype); 228 extern DWtype __divdi3 (DWtype, DWtype); 229 extern UDWtype __udivdi3 (UDWtype, UDWtype); 230 extern UDWtype __umoddi3 (UDWtype, UDWtype); 231 extern DWtype __moddi3 (DWtype, DWtype); 232 233 /* __udivmoddi4 is static inline when building other libgcc2 portions. */ 234 #if (!defined (L_udivdi3) && !defined (L_divdi3) && \ 235 !defined (L_umoddi3) && !defined (L_moddi3)) 236 extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *); 237 #endif 238 239 /* __negdi2 is static inline when building other libgcc2 portions. */ 240 #if !defined(L_divdi3) && !defined(L_moddi3) 241 extern DWtype __negdi2 (DWtype); 242 #endif 243 244 extern DWtype __lshrdi3 (DWtype, word_type); 245 extern DWtype __ashldi3 (DWtype, word_type); 246 extern DWtype __ashrdi3 (DWtype, word_type); 247 extern DWtype __ffsdi2 (DWtype); 248 249 /* __udiv_w_sdiv is static inline when building other libgcc2 portions. */ 250 #if (!defined(L_udivdi3) && !defined(L_divdi3) && \ 251 !defined(L_umoddi3) && !defined(L_moddi3)) 252 extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype); 253 #endif 254 255 extern word_type __cmpdi2 (DWtype, DWtype); 256 extern word_type __ucmpdi2 (DWtype, DWtype); 257 258 extern Wtype __absvsi2 (Wtype); 259 extern DWtype __absvdi2 (DWtype); 260 extern Wtype __addvsi3 (Wtype, Wtype); 261 extern DWtype __addvdi3 (DWtype, DWtype); 262 extern Wtype __subvsi3 (Wtype, Wtype); 263 extern DWtype __subvdi3 (DWtype, DWtype); 264 extern Wtype __mulvsi3 (Wtype, Wtype); 265 extern DWtype __mulvdi3 (DWtype, DWtype); 266 extern Wtype __negvsi2 (Wtype); 267 extern DWtype __negvdi2 (DWtype); 268 269 #if BITS_PER_UNIT == 8 270 extern DWtype __fixdfdi (DFtype); 271 extern DWtype __fixsfdi (SFtype); 272 extern DFtype __floatdidf (DWtype); 273 extern SFtype __floatdisf (DWtype); 274 extern UWtype __fixunsdfSI (DFtype); 275 extern UWtype __fixunssfSI (SFtype); 276 extern DWtype __fixunsdfDI (DFtype); 277 extern DWtype __fixunssfDI (SFtype); 278 279 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 96 280 extern DWtype __fixxfdi (XFtype); 281 extern DWtype __fixunsxfDI (XFtype); 282 extern XFtype __floatdixf (DWtype); 283 extern UWtype __fixunsxfSI (XFtype); 284 #endif 285 286 #if LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128 287 extern DWtype __fixunstfDI (TFtype); 288 extern DWtype __fixtfdi (TFtype); 289 extern TFtype __floatditf (DWtype); 290 #endif 291 #endif /* BITS_PER_UNIT == 8 */ 292 293 /* DWstructs are pairs of Wtype values in the order determined by 294 LIBGCC2_WORDS_BIG_ENDIAN. */ 295 296 #if LIBGCC2_WORDS_BIG_ENDIAN 297 struct DWstruct {Wtype high, low;}; 298 #else 299 struct DWstruct {Wtype low, high;}; 300 #endif 301 302 /* We need this union to unpack/pack DImode values, since we don't have 303 any arithmetic yet. Incoming DImode parameters are stored into the 304 `ll' field, and the unpacked result is read from the struct `s'. */ 305 306 typedef union 307 { 308 struct DWstruct s; 309 DWtype ll; 310 } DWunion; 311 312 #include "longlong.h" 313 314 #endif /* ! GCC_LIBGCC2_H */ 315