1 1.3 martin /* $NetBSD: systfloat.S,v 1.3 2008/04/28 20:23:04 martin Exp $ */ 2 1.2 ross 3 1.2 ross /* This is a derivative work. */ 4 1.2 ross 5 1.2 ross /*- 6 1.2 ross * Copyright (c) 2001 The NetBSD Foundation, Inc. 7 1.2 ross * All rights reserved. 8 1.2 ross * 9 1.2 ross * This code is derived from software contributed to The NetBSD Foundation 10 1.2 ross * by Ross Harvey. 11 1.2 ross * 12 1.2 ross * Redistribution and use in source and binary forms, with or without 13 1.2 ross * modification, are permitted provided that the following conditions 14 1.2 ross * are met: 15 1.2 ross * 1. Redistributions of source code must retain the above copyright 16 1.2 ross * notice, this list of conditions and the following disclaimer. 17 1.2 ross * 2. Redistributions in binary form must reproduce the above copyright 18 1.2 ross * notice, this list of conditions and the following disclaimer in the 19 1.2 ross * documentation and/or other materials provided with the distribution. 20 1.2 ross * 21 1.2 ross * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 1.2 ross * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 1.2 ross * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 1.2 ross * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 1.2 ross * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 1.2 ross * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 1.2 ross * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 1.2 ross * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 1.2 ross * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 1.2 ross * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 1.2 ross * POSSIBILITY OF SUCH DAMAGE. 32 1.2 ross */ 33 1.1 ross 34 1.1 ross /* 35 1.1 ross =============================================================================== 36 1.1 ross 37 1.1 ross This GNU assembler source file is part of TestFloat, Release 2a, a package 38 1.1 ross of programs for testing the correctness of floating-point arithmetic 39 1.1 ross complying to the IEC/IEEE Standard for Floating-Point. 40 1.1 ross 41 1.1 ross Written by John R. Hauser. More information is available through the Web 42 1.1 ross page `http://HTTP.CS.Berkeley.EDU/~jhauser/arithmetic/TestFloat.html'. 43 1.1 ross 44 1.1 ross THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort 45 1.1 ross has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT 46 1.1 ross TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO 47 1.1 ross PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY 48 1.1 ross AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE. 49 1.1 ross 50 1.1 ross Derivative works are acceptable, even for commercial purposes, so long as 51 1.1 ross (1) they include prominent notice that the work is derivative, and (2) they 52 1.1 ross include prominent notice akin to these four paragraphs for those parts of 53 1.1 ross this code that are retained. 54 1.1 ross 55 1.1 ross =============================================================================== 56 1.1 ross */ 57 1.1 ross 58 1.1 ross .text 59 1.1 ross 60 1.1 ross /* 61 1.1 ross ------------------------------------------------------------------------------- 62 1.1 ross ------------------------------------------------------------------------------- 63 1.1 ross */ 64 1.2 ross 65 1.2 ross #include <machine/asm.h> 66 1.2 ross 67 1.2 ross ENTRY(syst_int32_to_floatx80) 68 1.1 ross fildl 8(%esp) 69 1.1 ross movl 4(%esp),%eax 70 1.1 ross fstpt (%eax) 71 1.1 ross ret $4 72 1.1 ross 73 1.1 ross /* 74 1.1 ross ------------------------------------------------------------------------------- 75 1.1 ross ------------------------------------------------------------------------------- 76 1.1 ross */ 77 1.2 ross 78 1.2 ross ENTRY(syst_int64_to_floatx80) 79 1.1 ross fildq 8(%esp) 80 1.1 ross movl 4(%esp),%eax 81 1.1 ross fstpt (%eax) 82 1.1 ross ret $4 83 1.1 ross 84 1.1 ross /* 85 1.1 ross ------------------------------------------------------------------------------- 86 1.1 ross ------------------------------------------------------------------------------- 87 1.1 ross */ 88 1.2 ross ENTRY(syst_float32_to_floatx80) 89 1.1 ross flds 8(%esp) 90 1.1 ross movl 4(%esp),%eax 91 1.1 ross fstpt (%eax) 92 1.1 ross ret $4 93 1.1 ross 94 1.1 ross /* 95 1.1 ross ------------------------------------------------------------------------------- 96 1.1 ross ------------------------------------------------------------------------------- 97 1.1 ross */ 98 1.2 ross ENTRY(syst_float64_to_floatx80) 99 1.1 ross fldl 8(%esp) 100 1.1 ross movl 4(%esp),%eax 101 1.1 ross fstpt (%eax) 102 1.1 ross ret $4 103 1.1 ross 104 1.1 ross /* 105 1.1 ross ------------------------------------------------------------------------------- 106 1.1 ross ------------------------------------------------------------------------------- 107 1.1 ross */ 108 1.2 ross ENTRY(syst_floatx80_to_int32) 109 1.1 ross fldt 4(%esp) 110 1.1 ross subl $4,%esp 111 1.1 ross fistpl (%esp) 112 1.1 ross movl (%esp),%eax 113 1.1 ross addl $4,%esp 114 1.1 ross ret 115 1.1 ross 116 1.1 ross /* 117 1.1 ross ------------------------------------------------------------------------------- 118 1.1 ross ------------------------------------------------------------------------------- 119 1.1 ross */ 120 1.2 ross ENTRY(syst_floatx80_to_int64) 121 1.1 ross fldt 4(%esp) 122 1.1 ross subl $8,%esp 123 1.1 ross fistpq (%esp) 124 1.1 ross movl (%esp),%eax 125 1.1 ross movl 4(%esp),%edx 126 1.1 ross addl $8,%esp 127 1.1 ross ret 128 1.1 ross 129 1.1 ross /* 130 1.1 ross ------------------------------------------------------------------------------- 131 1.1 ross ------------------------------------------------------------------------------- 132 1.1 ross */ 133 1.2 ross ENTRY(syst_floatx80_to_float32) 134 1.1 ross fldt 4(%esp) 135 1.1 ross subl $4,%esp 136 1.1 ross fstps (%esp) 137 1.1 ross movl (%esp),%eax 138 1.1 ross addl $4,%esp 139 1.1 ross ret 140 1.1 ross 141 1.1 ross /* 142 1.1 ross ------------------------------------------------------------------------------- 143 1.1 ross ------------------------------------------------------------------------------- 144 1.1 ross */ 145 1.2 ross ENTRY(syst_floatx80_to_float64) 146 1.1 ross fldt 4(%esp) 147 1.1 ross subl $8,%esp 148 1.1 ross fstpl (%esp) 149 1.1 ross movl 4(%esp),%edx 150 1.1 ross movl (%esp),%eax 151 1.1 ross addl $8,%esp 152 1.1 ross ret 153 1.1 ross 154 1.1 ross /* 155 1.1 ross ------------------------------------------------------------------------------- 156 1.1 ross ------------------------------------------------------------------------------- 157 1.1 ross */ 158 1.2 ross ENTRY(syst_floatx80_round_to_int) 159 1.1 ross fldt 8(%esp) 160 1.1 ross frndint 161 1.1 ross movl 4(%esp),%eax 162 1.1 ross fstpt (%eax) 163 1.1 ross ret $4 164 1.1 ross 165 1.1 ross /* 166 1.1 ross ------------------------------------------------------------------------------- 167 1.1 ross ------------------------------------------------------------------------------- 168 1.1 ross */ 169 1.2 ross ENTRY(syst_floatx80_add) 170 1.1 ross fldt 8(%esp) 171 1.1 ross fldt 20(%esp) 172 1.1 ross faddp 173 1.1 ross movl 4(%esp),%eax 174 1.1 ross fstpt (%eax) 175 1.1 ross ret $4 176 1.1 ross 177 1.1 ross /* 178 1.1 ross ------------------------------------------------------------------------------- 179 1.1 ross ------------------------------------------------------------------------------- 180 1.1 ross */ 181 1.2 ross ENTRY(syst_floatx80_sub) 182 1.1 ross fldt 8(%esp) 183 1.1 ross fldt 20(%esp) 184 1.1 ross fsubrp 185 1.1 ross movl 4(%esp),%eax 186 1.1 ross fstpt (%eax) 187 1.1 ross ret $4 188 1.1 ross 189 1.1 ross /* 190 1.1 ross ------------------------------------------------------------------------------- 191 1.1 ross ------------------------------------------------------------------------------- 192 1.1 ross */ 193 1.2 ross ENTRY(syst_floatx80_mul) 194 1.1 ross fldt 8(%esp) 195 1.1 ross fldt 20(%esp) 196 1.1 ross fmulp 197 1.1 ross movl 4(%esp),%eax 198 1.1 ross fstpt (%eax) 199 1.1 ross ret $4 200 1.1 ross 201 1.1 ross /* 202 1.1 ross ------------------------------------------------------------------------------- 203 1.1 ross ------------------------------------------------------------------------------- 204 1.1 ross */ 205 1.2 ross ENTRY(syst_floatx80_div) 206 1.1 ross fldt 8(%esp) 207 1.1 ross fldt 20(%esp) 208 1.1 ross fdivrp 209 1.1 ross movl 4(%esp),%eax 210 1.1 ross fstpt (%eax) 211 1.1 ross ret $4 212 1.1 ross 213 1.1 ross /* 214 1.1 ross ------------------------------------------------------------------------------- 215 1.1 ross ------------------------------------------------------------------------------- 216 1.1 ross */ 217 1.2 ross ENTRY(syst_floatx80_rem) 218 1.1 ross fldt 20(%esp) 219 1.1 ross fldt 8(%esp) 220 1.1 ross floatx80_rem_loop: 221 1.1 ross fprem1 222 1.1 ross fnstsw %ax 223 1.1 ross btw $10,%ax 224 1.1 ross jc floatx80_rem_loop 225 1.1 ross movl 4(%esp),%eax 226 1.1 ross fstpt (%eax) 227 1.1 ross fstp %st(0) 228 1.1 ross ret $4 229 1.1 ross 230 1.1 ross /* 231 1.1 ross ------------------------------------------------------------------------------- 232 1.1 ross ------------------------------------------------------------------------------- 233 1.1 ross */ 234 1.2 ross ENTRY(syst_floatx80_sqrt) 235 1.1 ross fldt 8(%esp) 236 1.1 ross fsqrt 237 1.1 ross movl 4(%esp),%eax 238 1.1 ross fstpt (%eax) 239 1.1 ross ret $4 240 1.1 ross 241 1.1 ross /* 242 1.1 ross ------------------------------------------------------------------------------- 243 1.1 ross ------------------------------------------------------------------------------- 244 1.1 ross */ 245 1.2 ross ENTRY(syst_floatx80_eq) 246 1.1 ross fldt 16(%esp) 247 1.1 ross fldt 4(%esp) 248 1.1 ross fucompp 249 1.1 ross fnstsw %ax 250 1.1 ross andw $17664,%ax 251 1.1 ross cmpw $16384,%ax 252 1.1 ross seteb %al 253 1.1 ross movzb %al,%eax 254 1.1 ross ret 255 1.1 ross 256 1.1 ross /* 257 1.1 ross ------------------------------------------------------------------------------- 258 1.1 ross ------------------------------------------------------------------------------- 259 1.1 ross */ 260 1.2 ross ENTRY(syst_floatx80_le) 261 1.1 ross fldt 4(%esp) 262 1.1 ross fldt 16(%esp) 263 1.1 ross fcompp 264 1.1 ross fnstsw %ax 265 1.1 ross notl %eax 266 1.1 ross shrl $8,%eax 267 1.1 ross andl $1,%eax 268 1.1 ross ret 269 1.1 ross 270 1.1 ross /* 271 1.1 ross ------------------------------------------------------------------------------- 272 1.1 ross ------------------------------------------------------------------------------- 273 1.1 ross */ 274 1.2 ross ENTRY(syst_floatx80_lt) 275 1.1 ross fldt 4(%esp) 276 1.1 ross fldt 16(%esp) 277 1.1 ross fcompp 278 1.1 ross fnstsw %ax 279 1.1 ross andw $17664,%ax 280 1.1 ross setzb %al 281 1.1 ross movzb %al,%eax 282 1.1 ross ret 283 1.1 ross 284 1.1 ross /* 285 1.1 ross ------------------------------------------------------------------------------- 286 1.1 ross ------------------------------------------------------------------------------- 287 1.1 ross */ 288 1.2 ross ENTRY(syst_floatx80_eq_signaling) 289 1.1 ross fldt 16(%esp) 290 1.1 ross fldt 4(%esp) 291 1.1 ross fcompp 292 1.1 ross fnstsw %ax 293 1.1 ross andw $17664,%ax 294 1.1 ross cmpw $16384,%ax 295 1.1 ross seteb %al 296 1.1 ross movzb %al,%eax 297 1.1 ross ret 298 1.1 ross 299 1.1 ross /* 300 1.1 ross ------------------------------------------------------------------------------- 301 1.1 ross ------------------------------------------------------------------------------- 302 1.1 ross */ 303 1.2 ross ENTRY(syst_floatx80_le_quiet) 304 1.1 ross fldt 4(%esp) 305 1.1 ross fldt 16(%esp) 306 1.1 ross fucompp 307 1.1 ross fnstsw %ax 308 1.1 ross notl %eax 309 1.1 ross shrl $8,%eax 310 1.1 ross andl $1,%eax 311 1.1 ross ret 312 1.1 ross 313 1.1 ross /* 314 1.1 ross ------------------------------------------------------------------------------- 315 1.1 ross ------------------------------------------------------------------------------- 316 1.1 ross */ 317 1.2 ross 318 1.2 ross ENTRY(syst_floatx80_lt_quiet) 319 1.1 ross fldt 4(%esp) 320 1.1 ross fldt 16(%esp) 321 1.1 ross fucompp 322 1.1 ross fnstsw %ax 323 1.1 ross andw $17664,%ax 324 1.1 ross setzb %al 325 1.1 ross movzb %al,%eax 326 1.1 ross ret 327 1.1 ross 328 1.2 ross /* 329 1.2 ross ------------------------------------------------------------------------------- 330 1.2 ross ------------------------------------------------------------------------------- 331 1.2 ross */ 332 1.2 ross 333 1.2 ross ENTRY(syst_floatx80_to_int32_round_to_zero) 334 1.2 ross pushl %ebp 335 1.2 ross movl %esp,%ebp 336 1.2 ross subl $12,%esp 337 1.2 ross fldt 8(%ebp) 338 1.2 ross fnstcw -4(%ebp) 339 1.2 ross movl -4(%ebp),%edx 340 1.2 ross movb $12,%dh 341 1.2 ross movl %edx,-12(%ebp) 342 1.2 ross fldcw -12(%ebp) 343 1.2 ross fistpl -12(%ebp) 344 1.2 ross movl -12(%ebp),%eax 345 1.2 ross fldcw -4(%ebp) 346 1.2 ross leave 347 1.2 ross ret 348 1.2 ross 349 1.2 ross /* 350 1.2 ross ------------------------------------------------------------------------------- 351 1.2 ross ------------------------------------------------------------------------------- 352 1.2 ross */ 353 1.2 ross 354 1.2 ross ENTRY(syst_floatx80_to_int64_round_to_zero) 355 1.2 ross pushl %ebp 356 1.2 ross movl %esp,%ebp 357 1.2 ross subl $12,%esp 358 1.2 ross fldt 8(%ebp) 359 1.2 ross fnstcw -4(%ebp) 360 1.2 ross movl -4(%ebp),%ecx 361 1.2 ross movb $12,%ch 362 1.2 ross movl %ecx,-12(%ebp) 363 1.2 ross fldcw -12(%ebp) 364 1.2 ross fistpq -12(%ebp) 365 1.2 ross movl -12(%ebp),%eax 366 1.2 ross movl -8(%ebp),%edx 367 1.2 ross fldcw -4(%ebp) 368 1.2 ross leave 369 1.2 ross ret 370