1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Linux/PA-RISC Project (http://www.parisc-linux.org/) 4 * 5 * Floating-point emulation code 6 * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org> 7 */ 8/* 9 * BEGIN_DESC 10 * 11 * File: 12 * @(#) pa/spmath/float.h $Revision: 1.1 $ 13 * 14 * Purpose: 15 * <<please update with a synopis of the functionality provided by this file>> 16 * 17 * BE header: no 18 * 19 * Shipped: yes 20 * /usr/conf/pa/spmath/float.h 21 * 22 * END_DESC 23*/ 24 25#ifdef __NO_PA_HDRS 26 PA header file -- do not include this header file for non-PA builds. 27#endif 28 29#include "fpbits.h" 30#include "hppa.h" 31/* 32 * Want to pick up the FPU capability flags, not the PDC structures. 33 * 'LOCORE' isn't really true in this case, but we don't want the C structures 34 * so it suits our purposes 35 */ 36#define LOCORE 37#include "fpu.h" 38 39/* 40 * Declare the basic structures for the 3 different 41 * floating-point precisions. 42 * 43 * Single number 44 * +-------+-------+-------+-------+-------+-------+-------+-------+ 45 * |s| exp | mantissa | 46 * +-------+-------+-------+-------+-------+-------+-------+-------+ 47 */ 48#define Sall(object) (object) 49#define Ssign(object) Bitfield_extract( 0, 1,object) 50#define Ssignedsign(object) Bitfield_signed_extract( 0, 1,object) 51#define Sexponent(object) Bitfield_extract( 1, 8,object) 52#define Smantissa(object) Bitfield_mask( 9, 23,object) 53#define Ssignaling(object) Bitfield_extract( 9, 1,object) 54#define Ssignalingnan(object) Bitfield_extract( 1, 9,object) 55#define Shigh2mantissa(object) Bitfield_extract( 9, 2,object) 56#define Sexponentmantissa(object) Bitfield_mask( 1, 31,object) 57#define Ssignexponent(object) Bitfield_extract( 0, 9,object) 58#define Shidden(object) Bitfield_extract( 8, 1,object) 59#define Shiddenoverflow(object) Bitfield_extract( 7, 1,object) 60#define Shiddenhigh7mantissa(object) Bitfield_extract( 8, 8,object) 61#define Shiddenhigh3mantissa(object) Bitfield_extract( 8, 4,object) 62#define Slow(object) Bitfield_mask( 31, 1,object) 63#define Slow4(object) Bitfield_mask( 28, 4,object) 64#define Slow31(object) Bitfield_mask( 1, 31,object) 65#define Shigh31(object) Bitfield_extract( 0, 31,object) 66#define Ssignedhigh31(object) Bitfield_signed_extract( 0, 31,object) 67#define Shigh4(object) Bitfield_extract( 0, 4,object) 68#define Sbit24(object) Bitfield_extract( 24, 1,object) 69#define Sbit28(object) Bitfield_extract( 28, 1,object) 70#define Sbit29(object) Bitfield_extract( 29, 1,object) 71#define Sbit30(object) Bitfield_extract( 30, 1,object) 72#define Sbit31(object) Bitfield_mask( 31, 1,object) 73 74#define Deposit_ssign(object,value) Bitfield_deposit(value,0,1,object) 75#define Deposit_sexponent(object,value) Bitfield_deposit(value,1,8,object) 76#define Deposit_smantissa(object,value) Bitfield_deposit(value,9,23,object) 77#define Deposit_shigh2mantissa(object,value) Bitfield_deposit(value,9,2,object) 78#define Deposit_sexponentmantissa(object,value) \ 79 Bitfield_deposit(value,1,31,object) 80#define Deposit_ssignexponent(object,value) Bitfield_deposit(value,0,9,object) 81#define Deposit_slow(object,value) Bitfield_deposit(value,31,1,object) 82#define Deposit_shigh4(object,value) Bitfield_deposit(value,0,4,object) 83 84#define Is_ssign(object) Bitfield_mask( 0, 1,object) 85#define Is_ssignaling(object) Bitfield_mask( 9, 1,object) 86#define Is_shidden(object) Bitfield_mask( 8, 1,object) 87#define Is_shiddenoverflow(object) Bitfield_mask( 7, 1,object) 88#define Is_slow(object) Bitfield_mask( 31, 1,object) 89#define Is_sbit24(object) Bitfield_mask( 24, 1,object) 90#define Is_sbit28(object) Bitfield_mask( 28, 1,object) 91#define Is_sbit29(object) Bitfield_mask( 29, 1,object) 92#define Is_sbit30(object) Bitfield_mask( 30, 1,object) 93#define Is_sbit31(object) Bitfield_mask( 31, 1,object) 94 95/* 96 * Double number. 97 * +-------+-------+-------+-------+-------+-------+-------+-------+ 98 * |s| exponent | mantissa part 1 | 99 * +-------+-------+-------+-------+-------+-------+-------+-------+ 100 * 101 * +-------+-------+-------+-------+-------+-------+-------+-------+ 102 * | mantissa part 2 | 103 * +-------+-------+-------+-------+-------+-------+-------+-------+ 104 */ 105#define Dallp1(object) (object) 106#define Dsign(object) Bitfield_extract( 0, 1,object) 107#define Dsignedsign(object) Bitfield_signed_extract( 0, 1,object) 108#define Dexponent(object) Bitfield_extract( 1, 11,object) 109#define Dmantissap1(object) Bitfield_mask( 12, 20,object) 110#define Dsignaling(object) Bitfield_extract( 12, 1,object) 111#define Dsignalingnan(object) Bitfield_extract( 1, 12,object) 112#define Dhigh2mantissa(object) Bitfield_extract( 12, 2,object) 113#define Dexponentmantissap1(object) Bitfield_mask( 1, 31,object) 114#define Dsignexponent(object) Bitfield_extract( 0, 12,object) 115#define Dhidden(object) Bitfield_extract( 11, 1,object) 116#define Dhiddenoverflow(object) Bitfield_extract( 10, 1,object) 117#define Dhiddenhigh7mantissa(object) Bitfield_extract( 11, 8,object) 118#define Dhiddenhigh3mantissa(object) Bitfield_extract( 11, 4,object) 119#define Dlowp1(object) Bitfield_mask( 31, 1,object) 120#define Dlow31p1(object) Bitfield_mask( 1, 31,object) 121#define Dhighp1(object) Bitfield_extract( 0, 1,object) 122#define Dhigh4p1(object) Bitfield_extract( 0, 4,object) 123#define Dhigh31p1(object) Bitfield_extract( 0, 31,object) 124#define Dsignedhigh31p1(object) Bitfield_signed_extract( 0, 31,object) 125#define Dbit3p1(object) Bitfield_extract( 3, 1,object) 126 127#define Deposit_dsign(object,value) Bitfield_deposit(value,0,1,object) 128#define Deposit_dexponent(object,value) Bitfield_deposit(value,1,11,object) 129#define Deposit_dmantissap1(object,value) Bitfield_deposit(value,12,20,object) 130#define Deposit_dhigh2mantissa(object,value) Bitfield_deposit(value,12,2,object) 131#define Deposit_dexponentmantissap1(object,value) \ 132 Bitfield_deposit(value,1,31,object) 133#define Deposit_dsignexponent(object,value) Bitfield_deposit(value,0,12,object) 134#define Deposit_dlowp1(object,value) Bitfield_deposit(value,31,1,object) 135#define Deposit_dhigh4p1(object,value) Bitfield_deposit(value,0,4,object) 136 137#define Is_dsign(object) Bitfield_mask( 0, 1,object) 138#define Is_dsignaling(object) Bitfield_mask( 12, 1,object) 139#define Is_dhidden(object) Bitfield_mask( 11, 1,object) 140#define Is_dhiddenoverflow(object) Bitfield_mask( 10, 1,object) 141#define Is_dlowp1(object) Bitfield_mask( 31, 1,object) 142#define Is_dhighp1(object) Bitfield_mask( 0, 1,object) 143#define Is_dbit3p1(object) Bitfield_mask( 3, 1,object) 144 145#define Dallp2(object) (object) 146#define Dmantissap2(object) (object) 147#define Dlowp2(object) Bitfield_mask( 31, 1,object) 148#define Dlow4p2(object) Bitfield_mask( 28, 4,object) 149#define Dlow31p2(object) Bitfield_mask( 1, 31,object) 150#define Dhighp2(object) Bitfield_extract( 0, 1,object) 151#define Dhigh31p2(object) Bitfield_extract( 0, 31,object) 152#define Dbit2p2(object) Bitfield_extract( 2, 1,object) 153#define Dbit3p2(object) Bitfield_extract( 3, 1,object) 154#define Dbit21p2(object) Bitfield_extract( 21, 1,object) 155#define Dbit28p2(object) Bitfield_extract( 28, 1,object) 156#define Dbit29p2(object) Bitfield_extract( 29, 1,object) 157#define Dbit30p2(object) Bitfield_extract( 30, 1,object) 158#define Dbit31p2(object) Bitfield_mask( 31, 1,object) 159 160#define Deposit_dlowp2(object,value) Bitfield_deposit(value,31,1,object) 161 162#define Is_dlowp2(object) Bitfield_mask( 31, 1,object) 163#define Is_dhighp2(object) Bitfield_mask( 0, 1,object) 164#define Is_dbit2p2(object) Bitfield_mask( 2, 1,object) 165#define Is_dbit3p2(object) Bitfield_mask( 3, 1,object) 166#define Is_dbit21p2(object) Bitfield_mask( 21, 1,object) 167#define Is_dbit28p2(object) Bitfield_mask( 28, 1,object) 168#define Is_dbit29p2(object) Bitfield_mask( 29, 1,object) 169#define Is_dbit30p2(object) Bitfield_mask( 30, 1,object) 170#define Is_dbit31p2(object) Bitfield_mask( 31, 1,object) 171 172/* 173 * Quad number. 174 * +-------+-------+-------+-------+-------+-------+-------+-------+ 175 * |s| exponent | mantissa part 1 | 176 * +-------+-------+-------+-------+-------+-------+-------+-------+ 177 * 178 * +-------+-------+-------+-------+-------+-------+-------+-------+ 179 * | mantissa part 2 | 180 * +-------+-------+-------+-------+-------+-------+-------+-------+ 181 * 182 * +-------+-------+-------+-------+-------+-------+-------+-------+ 183 * | mantissa part 3 | 184 * +-------+-------+-------+-------+-------+-------+-------+-------+ 185 * 186 * +-------+-------+-------+-------+-------+-------+-------+-------+ 187 * | mantissa part 4 | 188 * +-------+-------+-------+-------+-------+-------+-------+-------+ 189 */ 190typedef struct 191 { 192 union 193 { 194 struct { unsigned qallp1; } u_qallp1; 195/* Not needed for now... 196 Bitfield_extract( 0, 1,u_qsign,qsign) 197 Bitfield_signed_extract( 0, 1,u_qsignedsign,qsignedsign) 198 Bitfield_extract( 1, 15,u_qexponent,qexponent) 199 Bitfield_extract(16, 16,u_qmantissap1,qmantissap1) 200 Bitfield_extract(16, 1,u_qsignaling,qsignaling) 201 Bitfield_extract(1, 16,u_qsignalingnan,qsignalingnan) 202 Bitfield_extract(16, 2,u_qhigh2mantissa,qhigh2mantissa) 203 Bitfield_extract( 1, 31,u_qexponentmantissap1,qexponentmantissap1) 204 Bitfield_extract( 0, 16,u_qsignexponent,qsignexponent) 205 Bitfield_extract(15, 1,u_qhidden,qhidden) 206 Bitfield_extract(14, 1,u_qhiddenoverflow,qhiddenoverflow) 207 Bitfield_extract(15, 8,u_qhiddenhigh7mantissa,qhiddenhigh7mantissa) 208 Bitfield_extract(15, 4,u_qhiddenhigh3mantissa,qhiddenhigh3mantissa) 209 Bitfield_extract(31, 1,u_qlowp1,qlowp1) 210 Bitfield_extract( 1, 31,u_qlow31p1,qlow31p1) 211 Bitfield_extract( 0, 1,u_qhighp1,qhighp1) 212 Bitfield_extract( 0, 4,u_qhigh4p1,qhigh4p1) 213 Bitfield_extract( 0, 31,u_qhigh31p1,qhigh31p1) 214 */ 215 } quad_u1; 216 union 217 { 218 struct { unsigned qallp2; } u_qallp2; 219 /* Not needed for now... 220 Bitfield_extract(31, 1,u_qlowp2,qlowp2) 221 Bitfield_extract( 1, 31,u_qlow31p2,qlow31p2) 222 Bitfield_extract( 0, 1,u_qhighp2,qhighp2) 223 Bitfield_extract( 0, 31,u_qhigh31p2,qhigh31p2) 224 */ 225 } quad_u2; 226 union 227 { 228 struct { unsigned qallp3; } u_qallp3; 229 /* Not needed for now... 230 Bitfield_extract(31, 1,u_qlowp3,qlowp3) 231 Bitfield_extract( 1, 31,u_qlow31p3,qlow31p3) 232 Bitfield_extract( 0, 1,u_qhighp3,qhighp3) 233 Bitfield_extract( 0, 31,u_qhigh31p3,qhigh31p3) 234 */ 235 } quad_u3; 236 union 237 { 238 struct { unsigned qallp4; } u_qallp4; 239 /* Not need for now... 240 Bitfield_extract(31, 1,u_qlowp4,qlowp4) 241 Bitfield_extract( 1, 31,u_qlow31p4,qlow31p4) 242 Bitfield_extract( 0, 1,u_qhighp4,qhighp4) 243 Bitfield_extract( 0, 31,u_qhigh31p4,qhigh31p4) 244 */ 245 } quad_u4; 246 } quad_floating_point; 247 248/* Extension - An additional structure to hold the guard, round and 249 * sticky bits during computations. 250 */ 251#define Extall(object) (object) 252#define Extsign(object) Bitfield_extract( 0, 1,object) 253#define Exthigh31(object) Bitfield_extract( 0, 31,object) 254#define Extlow31(object) Bitfield_extract( 1, 31,object) 255#define Extlow(object) Bitfield_extract( 31, 1,object) 256 257/* 258 * Single extended - The upper word is just like single precision, 259 * but one additional word of mantissa is needed. 260 */ 261#define Sextallp1(object) (object) 262#define Sextallp2(object) (object) 263#define Sextlowp1(object) Bitfield_extract( 31, 1,object) 264#define Sexthighp2(object) Bitfield_extract( 0, 1,object) 265#define Sextlow31p2(object) Bitfield_extract( 1, 31,object) 266#define Sexthiddenoverflow(object) Bitfield_extract( 4, 1,object) 267#define Is_sexthiddenoverflow(object) Bitfield_mask( 4, 1,object) 268 269/* 270 * Double extended - The upper two words are just like double precision, 271 * but two additional words of mantissa are needed. 272 */ 273#define Dextallp1(object) (object) 274#define Dextallp2(object) (object) 275#define Dextallp3(object) (object) 276#define Dextallp4(object) (object) 277#define Dextlowp2(object) Bitfield_extract( 31, 1,object) 278#define Dexthighp3(object) Bitfield_extract( 0, 1,object) 279#define Dextlow31p3(object) Bitfield_extract( 1, 31,object) 280#define Dexthiddenoverflow(object) Bitfield_extract( 10, 1,object) 281#define Is_dexthiddenoverflow(object) Bitfield_mask( 10, 1,object) 282#define Deposit_dextlowp4(object,value) Bitfield_deposit(value,31,1,object) 283 284/* 285 * Declare the basic structures for the 3 different 286 * fixed-point precisions. 287 * 288 * Single number 289 * +-------+-------+-------+-------+-------+-------+-------+-------+ 290 * |s| integer | 291 * +-------+-------+-------+-------+-------+-------+-------+-------+ 292 */ 293typedef int sgl_integer; 294 295/* 296 * Double number. 297 * +-------+-------+-------+-------+-------+-------+-------+-------+ 298 * |s| high integer | 299 * +-------+-------+-------+-------+-------+-------+-------+-------+ 300 * 301 * +-------+-------+-------+-------+-------+-------+-------+-------+ 302 * | low integer | 303 * +-------+-------+-------+-------+-------+-------+-------+-------+ 304 */ 305struct dint { 306 int wd0; 307 unsigned int wd1; 308}; 309 310struct dblwd { 311 unsigned int wd0; 312 unsigned int wd1; 313}; 314 315/* 316 * Quad number. 317 * +-------+-------+-------+-------+-------+-------+-------+-------+ 318 * |s| integer part1 | 319 * +-------+-------+-------+-------+-------+-------+-------+-------+ 320 * 321 * +-------+-------+-------+-------+-------+-------+-------+-------+ 322 * | integer part 2 | 323 * +-------+-------+-------+-------+-------+-------+-------+-------+ 324 * 325 * +-------+-------+-------+-------+-------+-------+-------+-------+ 326 * | integer part 3 | 327 * +-------+-------+-------+-------+-------+-------+-------+-------+ 328 * 329 * +-------+-------+-------+-------+-------+-------+-------+-------+ 330 * | integer part 4 | 331 * +-------+-------+-------+-------+-------+-------+-------+-------+ 332 */ 333 334struct quadwd { 335 int wd0; 336 unsigned int wd1; 337 unsigned int wd2; 338 unsigned int wd3; 339}; 340 341typedef struct quadwd quad_integer; 342 343 344/* useful typedefs */ 345typedef unsigned int sgl_floating_point; 346typedef struct dblwd dbl_floating_point; 347typedef struct dint dbl_integer; 348typedef struct dblwd dbl_unsigned; 349 350/* 351 * Define the different precisions' parameters. 352 */ 353#define SGL_BITLENGTH 32 354#define SGL_EMAX 127 355#define SGL_EMIN (-126) 356#define SGL_BIAS 127 357#define SGL_WRAP 192 358#define SGL_INFINITY_EXPONENT (SGL_EMAX+SGL_BIAS+1) 359#define SGL_THRESHOLD 32 360#define SGL_EXP_LENGTH 8 361#define SGL_P 24 362 363#define DBL_BITLENGTH 64 364#define DBL_EMAX 1023 365#define DBL_EMIN (-1022) 366#define DBL_BIAS 1023 367#define DBL_WRAP 1536 368#define DBL_INFINITY_EXPONENT (DBL_EMAX+DBL_BIAS+1) 369#define DBL_THRESHOLD 64 370#define DBL_EXP_LENGTH 11 371#define DBL_P 53 372 373#define QUAD_BITLENGTH 128 374#define QUAD_EMAX 16383 375#define QUAD_EMIN (-16382) 376#define QUAD_BIAS 16383 377#define QUAD_WRAP 24576 378#define QUAD_INFINITY_EXPONENT (QUAD_EMAX+QUAD_BIAS+1) 379#define QUAD_P 113 380 381/* Boolean Values etc. */ 382#define FALSE 0 383#define TRUE (!FALSE) 384#define NOT ! 385#define XOR ^ 386 387/* other constants */ 388#undef NULL 389#define NULL 0 390#define NIL 0 391#define SGL 0 392#define DBL 1 393#define BADFMT 2 394#define QUAD 3 395 396 397/* Types */ 398typedef int boolean; 399typedef int FORMAT; 400typedef int VOID; 401 402 403/* Declare status register 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 * |V|Z|O|U|I|C| rsv | model | version |RM |rsv|T|r|V|Z|O|U|I| 408 * +-------+-------+-------+-------+-------+-------+-------+-------+ 409 */ 410#define Cbit(object) Bitfield_extract( 5, 1,object) 411#define Tbit(object) Bitfield_extract( 25, 1,object) 412#define Roundingmode(object) Bitfield_extract( 21, 2,object) 413#define Invalidtrap(object) Bitfield_extract( 27, 1,object) 414#define Divisionbyzerotrap(object) Bitfield_extract( 28, 1,object) 415#define Overflowtrap(object) Bitfield_extract( 29, 1,object) 416#define Underflowtrap(object) Bitfield_extract( 30, 1,object) 417#define Inexacttrap(object) Bitfield_extract( 31, 1,object) 418#define Invalidflag(object) Bitfield_extract( 0, 1,object) 419#define Divisionbyzeroflag(object) Bitfield_extract( 1, 1,object) 420#define Overflowflag(object) Bitfield_extract( 2, 1,object) 421#define Underflowflag(object) Bitfield_extract( 3, 1,object) 422#define Inexactflag(object) Bitfield_extract( 4, 1,object) 423#define Allflags(object) Bitfield_extract( 0, 5,object) 424 425/* Definitions relevant to the status register */ 426 427/* Rounding Modes */ 428#define ROUNDNEAREST 0 429#define ROUNDZERO 1 430#define ROUNDPLUS 2 431#define ROUNDMINUS 3 432 433/* Exceptions */ 434#define NOEXCEPTION 0x0 435#define INVALIDEXCEPTION 0x20 436#define DIVISIONBYZEROEXCEPTION 0x10 437#define OVERFLOWEXCEPTION 0x08 438#define UNDERFLOWEXCEPTION 0x04 439#define INEXACTEXCEPTION 0x02 440#define UNIMPLEMENTEDEXCEPTION 0x01 441 442/* New exceptions for the 2E Opcode */ 443#define OPC_2E_INVALIDEXCEPTION 0x30 444#define OPC_2E_OVERFLOWEXCEPTION 0x18 445#define OPC_2E_UNDERFLOWEXCEPTION 0x0c 446#define OPC_2E_INEXACTEXCEPTION 0x12 447 448/* Declare exception registers equivalent to FPUs architecture 449 * 450 * 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 1 451 * +-------+-------+-------+-------+-------+-------+-------+-------+ 452 * |excepttype | r1 | r2/ext | operation |parm |n| t/cond | 453 * +-------+-------+-------+-------+-------+-------+-------+-------+ 454 */ 455#define Allexception(object) (object) 456#define Exceptiontype(object) Bitfield_extract( 0, 6,object) 457#define Instructionfield(object) Bitfield_mask( 6,26,object) 458#define Parmfield(object) Bitfield_extract( 23, 3,object) 459#define Rabit(object) Bitfield_extract( 24, 1,object) 460#define Ibit(object) Bitfield_extract( 25, 1,object) 461 462#define Set_exceptiontype(object,value) Bitfield_deposit(value, 0, 6,object) 463#define Set_parmfield(object,value) Bitfield_deposit(value, 23, 3,object) 464#define Set_exceptiontype_and_instr_field(exception,instruction,object) \ 465 object = exception << 26 | instruction 466 467/* Declare the condition field 468 * 469 * 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 1 470 * +-------+-------+-------+-------+-------+-------+-------+-------+ 471 * | |G|L|E|U|X| 472 * +-------+-------+-------+-------+-------+-------+-------+-------+ 473 */ 474#define Greaterthanbit(object) Bitfield_extract( 27, 1,object) 475#define Lessthanbit(object) Bitfield_extract( 28, 1,object) 476#define Equalbit(object) Bitfield_extract( 29, 1,object) 477#define Unorderedbit(object) Bitfield_extract( 30, 1,object) 478#define Exceptionbit(object) Bitfield_extract( 31, 1,object) 479 480/* An alias name for the status register */ 481#define Fpustatus_register (*status) 482 483/************************************************** 484 * Status register referencing and manipulation. * 485 **************************************************/ 486 487/* Rounding mode */ 488#define Rounding_mode() Roundingmode(Fpustatus_register) 489#define Is_rounding_mode(rmode) \ 490 (Roundingmode(Fpustatus_register) == rmode) 491#define Set_rounding_mode(value) \ 492 Bitfield_deposit(value,21,2,Fpustatus_register) 493 494/* Boolean testing of the trap enable bits */ 495#define Is_invalidtrap_enabled() Invalidtrap(Fpustatus_register) 496#define Is_divisionbyzerotrap_enabled() Divisionbyzerotrap(Fpustatus_register) 497#define Is_overflowtrap_enabled() Overflowtrap(Fpustatus_register) 498#define Is_underflowtrap_enabled() Underflowtrap(Fpustatus_register) 499#define Is_inexacttrap_enabled() Inexacttrap(Fpustatus_register) 500 501/* Set the indicated flags in the status register */ 502#define Set_invalidflag() Bitfield_deposit(1,0,1,Fpustatus_register) 503#define Set_divisionbyzeroflag() Bitfield_deposit(1,1,1,Fpustatus_register) 504#define Set_overflowflag() Bitfield_deposit(1,2,1,Fpustatus_register) 505#define Set_underflowflag() Bitfield_deposit(1,3,1,Fpustatus_register) 506#define Set_inexactflag() Bitfield_deposit(1,4,1,Fpustatus_register) 507 508#define Clear_all_flags() Bitfield_deposit(0,0,5,Fpustatus_register) 509 510/* Manipulate the trap and condition code bits (tbit and cbit) */ 511#define Set_tbit() Bitfield_deposit(1,25,1,Fpustatus_register) 512#define Clear_tbit() Bitfield_deposit(0,25,1,Fpustatus_register) 513#define Is_tbit_set() Tbit(Fpustatus_register) 514#define Is_cbit_set() Cbit(Fpustatus_register) 515 516#define Set_status_cbit(value) \ 517 Bitfield_deposit(value,5,1,Fpustatus_register) 518 519/******************************* 520 * Condition field referencing * 521 *******************************/ 522#define Unordered(cond) Unorderedbit(cond) 523#define Equal(cond) Equalbit(cond) 524#define Lessthan(cond) Lessthanbit(cond) 525#define Greaterthan(cond) Greaterthanbit(cond) 526#define Exception(cond) Exceptionbit(cond) 527 528 529/* Defines for the extension */ 530#define Ext_isone_sign(extent) (Extsign(extent)) 531#define Ext_isnotzero(extent) \ 532 (Extall(extent)) 533#define Ext_isnotzero_lower(extent) \ 534 (Extlow31(extent)) 535#define Ext_leftshiftby1(extent) \ 536 Extall(extent) <<= 1 537#define Ext_negate(extent) \ 538 (int )Extall(extent) = 0 - (int )Extall(extent) 539#define Ext_setone_low(extent) Bitfield_deposit(1,31,1,extent) 540#define Ext_setzero(extent) Extall(extent) = 0 541 542typedef int operation; 543 544/* error messages */ 545 546#define NONE 0 547#define UNDEFFPINST 1 548 549/* Function definitions: opcode, opclass */ 550#define FTEST (1<<2) | 0 551#define FCPY (2<<2) | 0 552#define FABS (3<<2) | 0 553#define FSQRT (4<<2) | 0 554#define FRND (5<<2) | 0 555 556#define FCNVFF (0<<2) | 1 557#define FCNVXF (1<<2) | 1 558#define FCNVFX (2<<2) | 1 559#define FCNVFXT (3<<2) | 1 560 561#define FCMP (0<<2) | 2 562 563#define FADD (0<<2) | 3 564#define FSUB (1<<2) | 3 565#define FMPY (2<<2) | 3 566#define FDIV (3<<2) | 3 567#define FREM (4<<2) | 3 568 569