1 /* $NetBSD: float.h,v 1.4 2009/01/27 11:49:54 skrll Exp $ */ 2 3 /* $OpenBSD: float.h,v 1.7 2004/01/02 14:39:01 mickey Exp $ */ 4 5 /* 6 * Copyright 1996 1995 by Open Software Foundation, Inc. 7 * All Rights Reserved 8 * 9 * Permission to use, copy, modify, and distribute this software and 10 * its documentation for any purpose and without fee is hereby granted, 11 * provided that the above copyright notice appears in all copies and 12 * that both the copyright notice and this permission notice appear in 13 * supporting documentation. 14 * 15 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 17 * FOR A PARTICULAR PURPOSE. 18 * 19 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 21 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 22 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 23 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 24 */ 25 /* 26 * pmk1.1 27 */ 28 /* 29 * (c) Copyright 1986 HEWLETT-PACKARD COMPANY 30 * 31 * To anyone who acknowledges that this file is provided "AS IS" 32 * without any express or implied warranty: 33 * permission to use, copy, modify, and distribute this file 34 * for any purpose is hereby granted without fee, provided that 35 * the above copyright notice and this notice appears in all 36 * copies, and that the name of Hewlett-Packard Company not be 37 * used in advertising or publicity pertaining to distribution 38 * of the software without specific, written prior permission. 39 * Hewlett-Packard Company makes no representations about the 40 * suitability of this software for any purpose. 41 */ 42 43 #include <sys/types.h> 44 #include <machine/float.h> 45 46 #include "../spmath/fpbits.h" 47 #include "../spmath/hppa.h" 48 49 /* 50 * Declare the basic structures for the 3 different 51 * floating-point precisions. 52 * 53 * Single number 54 * +-------+-------+-------+-------+-------+-------+-------+-------+ 55 * |s| exp | mantissa | 56 * +-------+-------+-------+-------+-------+-------+-------+-------+ 57 */ 58 #define Sall(object) (object) 59 #define Ssign(object) Bitfield_extract( 0, 1,object) 60 #define Ssignedsign(object) Bitfield_signed_extract( 0, 1,object) 61 #define Sexponent(object) Bitfield_extract( 1, 8,object) 62 #define Smantissa(object) Bitfield_mask( 9, 23,object) 63 #define Ssignaling(object) Bitfield_extract( 9, 1,object) 64 #define Ssignalingnan(object) Bitfield_extract( 1, 9,object) 65 #define Shigh2mantissa(object) Bitfield_extract( 9, 2,object) 66 #define Sexponentmantissa(object) Bitfield_mask( 1, 31,object) 67 #define Ssignexponent(object) Bitfield_extract( 0, 9,object) 68 #define Shidden(object) Bitfield_extract( 8, 1,object) 69 #define Shiddenoverflow(object) Bitfield_extract( 7, 1,object) 70 #define Shiddenhigh7mantissa(object) Bitfield_extract( 8, 8,object) 71 #define Shiddenhigh3mantissa(object) Bitfield_extract( 8, 4,object) 72 #define Slow(object) Bitfield_mask( 31, 1,object) 73 #define Slow4(object) Bitfield_mask( 28, 4,object) 74 #define Slow31(object) Bitfield_mask( 1, 31,object) 75 #define Shigh31(object) Bitfield_extract( 0, 31,object) 76 #define Ssignedhigh31(object) Bitfield_signed_extract( 0, 31,object) 77 #define Shigh4(object) Bitfield_extract( 0, 4,object) 78 #define Sbit24(object) Bitfield_extract( 24, 1,object) 79 #define Sbit28(object) Bitfield_extract( 28, 1,object) 80 #define Sbit29(object) Bitfield_extract( 29, 1,object) 81 #define Sbit30(object) Bitfield_extract( 30, 1,object) 82 #define Sbit31(object) Bitfield_mask( 31, 1,object) 83 84 #define Deposit_ssign(object,value) Bitfield_deposit(value,0,1,object) 85 #define Deposit_sexponent(object,value) Bitfield_deposit(value,1,8,object) 86 #define Deposit_smantissa(object,value) Bitfield_deposit(value,9,23,object) 87 #define Deposit_shigh2mantissa(object,value) Bitfield_deposit(value,9,2,object) 88 #define Deposit_sexponentmantissa(object,value) \ 89 Bitfield_deposit(value,1,31,object) 90 #define Deposit_ssignexponent(object,value) Bitfield_deposit(value,0,9,object) 91 #define Deposit_slow(object,value) Bitfield_deposit(value,31,1,object) 92 #define Deposit_shigh4(object,value) Bitfield_deposit(value,0,4,object) 93 94 #define Is_ssign(object) Bitfield_mask( 0, 1,object) 95 #define Is_ssignaling(object) Bitfield_mask( 9, 1,object) 96 #define Is_shidden(object) Bitfield_mask( 8, 1,object) 97 #define Is_shiddenoverflow(object) Bitfield_mask( 7, 1,object) 98 #define Is_slow(object) Bitfield_mask( 31, 1,object) 99 #define Is_sbit24(object) Bitfield_mask( 24, 1,object) 100 #define Is_sbit28(object) Bitfield_mask( 28, 1,object) 101 #define Is_sbit29(object) Bitfield_mask( 29, 1,object) 102 #define Is_sbit30(object) Bitfield_mask( 30, 1,object) 103 #define Is_sbit31(object) Bitfield_mask( 31, 1,object) 104 105 /* 106 * Double number. 107 * +-------+-------+-------+-------+-------+-------+-------+-------+ 108 * |s| exponent | mantissa part 1 | 109 * +-------+-------+-------+-------+-------+-------+-------+-------+ 110 * 111 * +-------+-------+-------+-------+-------+-------+-------+-------+ 112 * | mantissa part 2 | 113 * +-------+-------+-------+-------+-------+-------+-------+-------+ 114 */ 115 #define Dallp1(object) (object) 116 #define Dsign(object) Bitfield_extract( 0, 1,object) 117 #define Dsignedsign(object) Bitfield_signed_extract( 0, 1,object) 118 #define Dexponent(object) Bitfield_extract( 1, 11,object) 119 #define Dmantissap1(object) Bitfield_mask( 12, 20,object) 120 #define Dsignaling(object) Bitfield_extract( 12, 1,object) 121 #define Dsignalingnan(object) Bitfield_extract( 1, 12,object) 122 #define Dhigh2mantissa(object) Bitfield_extract( 12, 2,object) 123 #define Dexponentmantissap1(object) Bitfield_mask( 1, 31,object) 124 #define Dsignexponent(object) Bitfield_extract( 0, 12,object) 125 #define Dhidden(object) Bitfield_extract( 11, 1,object) 126 #define Dhiddenoverflow(object) Bitfield_extract( 10, 1,object) 127 #define Dhiddenhigh7mantissa(object) Bitfield_extract( 11, 8,object) 128 #define Dhiddenhigh3mantissa(object) Bitfield_extract( 11, 4,object) 129 #define Dlowp1(object) Bitfield_mask( 31, 1,object) 130 #define Dlow31p1(object) Bitfield_mask( 1, 31,object) 131 #define Dhighp1(object) Bitfield_extract( 0, 1,object) 132 #define Dhigh4p1(object) Bitfield_extract( 0, 4,object) 133 #define Dhigh31p1(object) Bitfield_extract( 0, 31,object) 134 #define Dsignedhigh31p1(object) Bitfield_signed_extract( 0, 31,object) 135 #define Dbit3p1(object) Bitfield_extract( 3, 1,object) 136 137 #define Deposit_dsign(object,value) Bitfield_deposit(value,0,1,object) 138 #define Deposit_dexponent(object,value) Bitfield_deposit(value,1,11,object) 139 #define Deposit_dmantissap1(object,value) Bitfield_deposit(value,12,20,object) 140 #define Deposit_dhigh2mantissa(object,value) Bitfield_deposit(value,12,2,object) 141 #define Deposit_dexponentmantissap1(object,value) \ 142 Bitfield_deposit(value,1,31,object) 143 #define Deposit_dsignexponent(object,value) Bitfield_deposit(value,0,12,object) 144 #define Deposit_dlowp1(object,value) Bitfield_deposit(value,31,1,object) 145 #define Deposit_dhigh4p1(object,value) Bitfield_deposit(value,0,4,object) 146 147 #define Is_dsign(object) Bitfield_mask( 0, 1,object) 148 #define Is_dsignaling(object) Bitfield_mask( 12, 1,object) 149 #define Is_dhidden(object) Bitfield_mask( 11, 1,object) 150 #define Is_dhiddenoverflow(object) Bitfield_mask( 10, 1,object) 151 #define Is_dlowp1(object) Bitfield_mask( 31, 1,object) 152 #define Is_dhighp1(object) Bitfield_mask( 0, 1,object) 153 #define Is_dbit3p1(object) Bitfield_mask( 3, 1,object) 154 155 #define Dallp2(object) (object) 156 #define Dmantissap2(object) (object) 157 #define Dlowp2(object) Bitfield_mask( 31, 1,object) 158 #define Dlow4p2(object) Bitfield_mask( 28, 4,object) 159 #define Dlow31p2(object) Bitfield_mask( 1, 31,object) 160 #define Dhighp2(object) Bitfield_extract( 0, 1,object) 161 #define Dhigh31p2(object) Bitfield_extract( 0, 31,object) 162 #define Dbit2p2(object) Bitfield_extract( 2, 1,object) 163 #define Dbit3p2(object) Bitfield_extract( 3, 1,object) 164 #define Dbit21p2(object) Bitfield_extract( 21, 1,object) 165 #define Dbit28p2(object) Bitfield_extract( 28, 1,object) 166 #define Dbit29p2(object) Bitfield_extract( 29, 1,object) 167 #define Dbit30p2(object) Bitfield_extract( 30, 1,object) 168 #define Dbit31p2(object) Bitfield_mask( 31, 1,object) 169 170 #define Deposit_dlowp2(object,value) Bitfield_deposit(value,31,1,object) 171 172 #define Is_dlowp2(object) Bitfield_mask( 31, 1,object) 173 #define Is_dhighp2(object) Bitfield_mask( 0, 1,object) 174 #define Is_dbit2p2(object) Bitfield_mask( 2, 1,object) 175 #define Is_dbit3p2(object) Bitfield_mask( 3, 1,object) 176 #define Is_dbit21p2(object) Bitfield_mask( 21, 1,object) 177 #define Is_dbit28p2(object) Bitfield_mask( 28, 1,object) 178 #define Is_dbit29p2(object) Bitfield_mask( 29, 1,object) 179 #define Is_dbit30p2(object) Bitfield_mask( 30, 1,object) 180 #define Is_dbit31p2(object) Bitfield_mask( 31, 1,object) 181 182 /* 183 * Quad number. 184 * +-------+-------+-------+-------+-------+-------+-------+-------+ 185 * |s| exponent | mantissa part 1 | 186 * +-------+-------+-------+-------+-------+-------+-------+-------+ 187 * 188 * +-------+-------+-------+-------+-------+-------+-------+-------+ 189 * | mantissa part 2 | 190 * +-------+-------+-------+-------+-------+-------+-------+-------+ 191 * 192 * +-------+-------+-------+-------+-------+-------+-------+-------+ 193 * | mantissa part 3 | 194 * +-------+-------+-------+-------+-------+-------+-------+-------+ 195 * 196 * +-------+-------+-------+-------+-------+-------+-------+-------+ 197 * | mantissa part 4 | 198 * +-------+-------+-------+-------+-------+-------+-------+-------+ 199 */ 200 typedef struct 201 { 202 union 203 { 204 struct { unsigned qallp1; } u_qallp1; 205 /* Not needed for now... 206 Bitfield_extract( 0, 1,u_qsign,qsign) 207 Bitfield_signed_extract( 0, 1,u_qsignedsign,qsignedsign) 208 Bitfield_extract( 1, 15,u_qexponent,qexponent) 209 Bitfield_extract(16, 16,u_qmantissap1,qmantissap1) 210 Bitfield_extract(16, 1,u_qsignaling,qsignaling) 211 Bitfield_extract(1, 16,u_qsignalingnan,qsignalingnan) 212 Bitfield_extract(16, 2,u_qhigh2mantissa,qhigh2mantissa) 213 Bitfield_extract( 1, 31,u_qexponentmantissap1,qexponentmantissap1) 214 Bitfield_extract( 0, 16,u_qsignexponent,qsignexponent) 215 Bitfield_extract(15, 1,u_qhidden,qhidden) 216 Bitfield_extract(14, 1,u_qhiddenoverflow,qhiddenoverflow) 217 Bitfield_extract(15, 8,u_qhiddenhigh7mantissa,qhiddenhigh7mantissa) 218 Bitfield_extract(15, 4,u_qhiddenhigh3mantissa,qhiddenhigh3mantissa) 219 Bitfield_extract(31, 1,u_qlowp1,qlowp1) 220 Bitfield_extract( 1, 31,u_qlow31p1,qlow31p1) 221 Bitfield_extract( 0, 1,u_qhighp1,qhighp1) 222 Bitfield_extract( 0, 4,u_qhigh4p1,qhigh4p1) 223 Bitfield_extract( 0, 31,u_qhigh31p1,qhigh31p1) 224 */ 225 } quad_u1; 226 union 227 { 228 struct { unsigned qallp2; } u_qallp2; 229 /* Not needed for now... 230 Bitfield_extract(31, 1,u_qlowp2,qlowp2) 231 Bitfield_extract( 1, 31,u_qlow31p2,qlow31p2) 232 Bitfield_extract( 0, 1,u_qhighp2,qhighp2) 233 Bitfield_extract( 0, 31,u_qhigh31p2,qhigh31p2) 234 */ 235 } quad_u2; 236 union 237 { 238 struct { unsigned qallp3; } u_qallp3; 239 /* Not needed for now... 240 Bitfield_extract(31, 1,u_qlowp3,qlowp3) 241 Bitfield_extract( 1, 31,u_qlow31p3,qlow31p3) 242 Bitfield_extract( 0, 1,u_qhighp3,qhighp3) 243 Bitfield_extract( 0, 31,u_qhigh31p3,qhigh31p3) 244 */ 245 } quad_u3; 246 union 247 { 248 struct { unsigned qallp4; } u_qallp4; 249 /* Not need for now... 250 Bitfield_extract(31, 1,u_qlowp4,qlowp4) 251 Bitfield_extract( 1, 31,u_qlow31p4,qlow31p4) 252 Bitfield_extract( 0, 1,u_qhighp4,qhighp4) 253 Bitfield_extract( 0, 31,u_qhigh31p4,qhigh31p4) 254 */ 255 } quad_u4; 256 } quad_floating_point; 257 258 /* Extension - An additional structure to hold the guard, round and 259 * sticky bits during computations. 260 */ 261 #define Extall(object) (object) 262 #define Extsign(object) Bitfield_extract( 0, 1,object) 263 #define Exthigh31(object) Bitfield_extract( 0, 31,object) 264 #define Extlow31(object) Bitfield_extract( 1, 31,object) 265 #define Extlow(object) Bitfield_extract( 31, 1,object) 266 267 /* 268 * Declare the basic structures for the 3 different 269 * fixed-point precisions. 270 * 271 * Single number 272 * +-------+-------+-------+-------+-------+-------+-------+-------+ 273 * |s| integer | 274 * +-------+-------+-------+-------+-------+-------+-------+-------+ 275 */ 276 typedef int sgl_integer; 277 278 /* 279 * Double number. 280 * +-------+-------+-------+-------+-------+-------+-------+-------+ 281 * |s| high integer | 282 * +-------+-------+-------+-------+-------+-------+-------+-------+ 283 * 284 * +-------+-------+-------+-------+-------+-------+-------+-------+ 285 * | low integer | 286 * +-------+-------+-------+-------+-------+-------+-------+-------+ 287 */ 288 struct dint { 289 int wd0; 290 unsigned int wd1; 291 }; 292 293 struct dblwd { 294 unsigned int wd0; 295 unsigned int wd1; 296 }; 297 298 /* 299 * Quad number. 300 * +-------+-------+-------+-------+-------+-------+-------+-------+ 301 * |s| integer part1 | 302 * +-------+-------+-------+-------+-------+-------+-------+-------+ 303 * 304 * +-------+-------+-------+-------+-------+-------+-------+-------+ 305 * | integer part 2 | 306 * +-------+-------+-------+-------+-------+-------+-------+-------+ 307 * 308 * +-------+-------+-------+-------+-------+-------+-------+-------+ 309 * | integer part 3 | 310 * +-------+-------+-------+-------+-------+-------+-------+-------+ 311 * 312 * +-------+-------+-------+-------+-------+-------+-------+-------+ 313 * | integer part 4 | 314 * +-------+-------+-------+-------+-------+-------+-------+-------+ 315 */ 316 317 struct quadwd { 318 int wd0; 319 unsigned int wd1; 320 unsigned int wd2; 321 unsigned int wd3; 322 }; 323 324 typedef struct quadwd quad_integer; 325 326 327 /* useful typedefs */ 328 typedef int sgl_floating_point; 329 typedef struct dblwd dbl_floating_point; 330 typedef struct dint dbl_integer; 331 332 /* 333 * Define the different precisions' parameters. 334 */ 335 #define SGL_BITLENGTH 32 336 #define SGL_EMAX 127 337 #define SGL_BIAS 127 338 #define SGL_WRAP 192 339 #define SGL_INFINITY_EXPONENT (SGL_EMAX+SGL_BIAS+1) 340 #define SGL_THRESHOLD 32 341 #define SGL_EXP_LENGTH 8 342 #define SGL_P 24 343 344 #define DBL_BITLENGTH 64 345 #define DBL_EMAX 1023 346 #define DBL_BIAS 1023 347 #define DBL_WRAP 1536 348 #define DBL_INFINITY_EXPONENT (DBL_EMAX+DBL_BIAS+1) 349 #define DBL_THRESHOLD 64 350 #define DBL_EXP_LENGTH 11 351 #define DBL_P 53 352 353 #define QUAD_BITLENGTH 128 354 #define QUAD_EMAX 16383 355 #define QUAD_BIAS 16383 356 #define QUAD_WRAP 24576 357 #define QUAD_INFINITY_EXPONENT (QUAD_EMAX+QUAD_BIAS+1) 358 #define QUAD_P 113 359 360 /* Boolean Values etc. */ 361 #define NOT ! 362 #define XOR ^ 363 364 /* Declare status register equivalent to FPUs architecture. 365 * 366 * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1 367 * +-------+-------+-------+-------+-------+-------+-------+-------+ 368 * |V|Z|O|U|I|C| rsv | model | version |RM |rsv|T|r|V|Z|O|U|I| 369 * +-------+-------+-------+-------+-------+-------+-------+-------+ 370 */ 371 #define Cbit(object) Bitfield_extract( 5, 1,object) 372 #define Tbit(object) Bitfield_extract( 25, 1,object) 373 #define Roundingmode(object) Bitfield_extract( 21, 2,object) 374 #define Invalidtrap(object) Bitfield_extract( 27, 1,object) 375 #define Divisionbyzerotrap(object) Bitfield_extract( 28, 1,object) 376 #define Overflowtrap(object) Bitfield_extract( 29, 1,object) 377 #define Underflowtrap(object) Bitfield_extract( 30, 1,object) 378 #define Inexacttrap(object) Bitfield_extract( 31, 1,object) 379 #define Invalidflag(object) Bitfield_extract( 0, 1,object) 380 #define Divisionbyzeroflag(object) Bitfield_extract( 1, 1,object) 381 #define Overflowflag(object) Bitfield_extract( 2, 1,object) 382 #define Underflowflag(object) Bitfield_extract( 3, 1,object) 383 #define Inexactflag(object) Bitfield_extract( 4, 1,object) 384 #define Allflags(object) Bitfield_extract( 0, 5,object) 385 386 /* Definitions relevant to the status register */ 387 388 /* Rounding Modes */ 389 #define ROUNDNEAREST 0 390 #define ROUNDZERO 1 391 #define ROUNDPLUS 2 392 #define ROUNDMINUS 3 393 394 /* Exceptions */ 395 #define NOEXCEPTION 0x0 396 #define INVALIDEXCEPTION 0x20 397 #define DIVISIONBYZEROEXCEPTION 0x10 398 #define OVERFLOWEXCEPTION 0x08 399 #define UNDERFLOWEXCEPTION 0x04 400 #define INEXACTEXCEPTION 0x02 401 #define UNIMPLEMENTEDEXCEPTION 0x01 402 403 /* Declare exception registers equivalent to FPUs architecture 404 * 405 * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1 406 * +-------+-------+-------+-------+-------+-------+-------+-------+ 407 * |excepttype | r1 | r2/ext | operation |parm |n| t/cond | 408 * +-------+-------+-------+-------+-------+-------+-------+-------+ 409 */ 410 #define Allexception(object) (object) 411 #define Exceptiontype(object) Bitfield_extract( 0, 6,object) 412 #define Instructionfield(object) Bitfield_mask( 6,26,object) 413 #define Parmfield(object) Bitfield_extract( 23, 3,object) 414 #define Rabit(object) Bitfield_extract( 24, 1,object) 415 #define Ibit(object) Bitfield_extract( 25, 1,object) 416 417 #define Set_exceptiontype(object,value) Bitfield_deposit(value, 0, 6,object) 418 #define Set_parmfield(object,value) Bitfield_deposit(value, 23, 3,object) 419 #define Set_exceptiontype_and_instr_field(exception,instruction,object) \ 420 object = ((exception) << 26) | (instruction) 421 422 /* Declare the condition field 423 * 424 * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1 425 * +-------+-------+-------+-------+-------+-------+-------+-------+ 426 * | |G|L|E|U|X| 427 * +-------+-------+-------+-------+-------+-------+-------+-------+ 428 */ 429 #define Allexception(object) (object) 430 #define Greaterthanbit(object) Bitfield_extract( 27, 1,object) 431 #define Lessthanbit(object) Bitfield_extract( 28, 1,object) 432 #define Equalbit(object) Bitfield_extract( 29, 1,object) 433 #define Unorderedbit(object) Bitfield_extract( 30, 1,object) 434 #define Exceptionbit(object) Bitfield_extract( 31, 1,object) 435 436 /* An alias name for the status register */ 437 #define Fpustatus_register (*status) 438 439 /************************************************** 440 * Status register referencing and manipulation. * 441 **************************************************/ 442 443 /* Rounding mode */ 444 #define Rounding_mode() Roundingmode(Fpustatus_register) 445 #define Is_rounding_mode(rmode) \ 446 (Roundingmode(Fpustatus_register) == rmode) 447 #define Set_rounding_mode(value) \ 448 Bitfield_deposit(value,21,2,Fpustatus_register) 449 450 /* Boolean testing of the trap enable bits */ 451 #define Is_invalidtrap_enabled() Invalidtrap(Fpustatus_register) 452 #define Is_divisionbyzerotrap_enabled() Divisionbyzerotrap(Fpustatus_register) 453 #define Is_overflowtrap_enabled() Overflowtrap(Fpustatus_register) 454 #define Is_underflowtrap_enabled() Underflowtrap(Fpustatus_register) 455 #define Is_inexacttrap_enabled() Inexacttrap(Fpustatus_register) 456 457 /* Set the indicated flags in the status register */ 458 #define Set_invalidflag() Bitfield_deposit(1,0,1,Fpustatus_register) 459 #define Set_divisionbyzeroflag() Bitfield_deposit(1,1,1,Fpustatus_register) 460 #define Set_overflowflag() Bitfield_deposit(1,2,1,Fpustatus_register) 461 #define Set_underflowflag() Bitfield_deposit(1,3,1,Fpustatus_register) 462 #define Set_inexactflag() Bitfield_deposit(1,4,1,Fpustatus_register) 463 464 #define Clear_all_flags() Bitfield_deposit(0,0,5,Fpustatus_register) 465 466 /* Manipulate the trap and condition code bits (tbit and cbit) */ 467 #define Set_tbit() Bitfield_deposit(1,25,1,Fpustatus_register) 468 #define Clear_tbit() Bitfield_deposit(0,25,1,Fpustatus_register) 469 #define Is_tbit_set() Tbit(Fpustatus_register) 470 #define Is_cbit_set() Cbit(Fpustatus_register) 471 472 #ifdef TIMEX 473 #define Set_status_cbit(value) \ 474 Bitfield_deposit(Bitfield_extract(10,10,Fpustatus_register),11,10,Fpustatus_register); \ 475 Bitfield_deposit(Bitfield_extract(5,1,Fpustatus_register),10,1,Fpustatus_register); \ 476 Bitfield_deposit(value,5,1,Fpustatus_register) 477 #else 478 #define Set_status_cbit(value) Bitfield_deposit(value,5,1,Fpustatus_register) 479 #endif 480 481 /******************************* 482 * Condition field referencing * 483 *******************************/ 484 #define Unordered(cond) Unorderedbit(cond) 485 #define Equal(cond) Equalbit(cond) 486 #define Lessthan(cond) Lessthanbit(cond) 487 #define Greaterthan(cond) Greaterthanbit(cond) 488 #define Exception(cond) Exceptionbit(cond) 489 490 491 /* Defines for the extension */ 492 #define Ext_isone_sign(extent) (Extsign(extent)) 493 #define Ext_isnotzero(extent) \ 494 (Extall(extent)) 495 #define Ext_isnotzero_lower(extent) \ 496 (Extlow31(extent)) 497 #define Ext_leftshiftby1(extent) \ 498 Extall(extent) <<= 1 499 #define Ext_negate(extent) \ 500 (int )Extall(extent) = 0 - (int )Extall(extent) 501 #define Ext_setone_low(extent) Bitfield_deposit(1,31,1,extent) 502 503
Indexes created Sun Sep 21 20:09:37 GMT 2025