projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| b25364a0 | 1 | /* Libgcc Target specific implementation. |
| 8d9254fc | 2 | Copyright (C) 2012-2020 Free Software Foundation, Inc. |
| b25364a0 S |
3 | Contributed by KPIT Cummins Infosystems Limited. |
| 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 3, 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 | Under Section 7 of GPL version 3, you are granted additional | |
| 18 | permissions described in the GCC Runtime Library Exception, version | |
| 19 | 3.1, as published by the Free Software Foundation. | |
| 20 | ||
| 21 | You should have received a copy of the GNU General Public License and | |
| 22 | a copy of the GCC Runtime Library Exception along with this program; | |
| 23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 24 | <http://www.gnu.org/licenses/>. */ | |
| 25 | ||
| 26 | #ifdef L_mulsi3 | |
| 27 | .text | |
| 28 | .align 4 | |
| 29 | .globl ___mulsi3 | |
| 30 | ___mulsi3: | |
| 31 | movw r4,r0 | |
| 32 | movw r2,r1 | |
| 33 | /* Extended multiplication between the 2 lower words */ | |
| 34 | muluw r1,(r1,r0) | |
| 35 | ||
| 36 | /* Multiply the lower word of each parameter */ | |
| 37 | mulw r2,r5 | |
| 38 | ||
| 39 | /* With the higher word of the other */ | |
| 40 | mulw r3,r4 | |
| 41 | ||
| 42 | /* Add products to the higher part of the final result */ | |
| 43 | addw r4,r1 | |
| 44 | addw r5,r1 | |
| 45 | jump (ra) | |
| 46 | #endif | |
| 47 | ||
| 48 | #ifdef L_divdi3 | |
| 49 | .text | |
| 50 | .align 4 | |
| 51 | .globl ___divdi3 | |
| 52 | ||
| 53 | ___divdi3: | |
| 54 | push $4, r7, ra | |
| 55 | ||
| 56 | /* Param #1 Long Long low bit first */ | |
| 57 | loadd 12(sp), (r1, r0) | |
| 58 | loadd 16(sp), (r3, r2) | |
| 59 | ||
| 60 | /* Param #2 Long Long low bit first */ | |
| 61 | loadd 20(sp), (r5, r4) | |
| 62 | loadd 24(sp), (r7, r6) | |
| 63 | ||
| 64 | /* Set neg to 0 */ | |
| 65 | movw $0, r10 | |
| 66 | ||
| 67 | subd $16, (sp) | |
| 68 | ||
| 69 | /* Compare if param1 is greater than 0 */ | |
| 70 | cmpw $0, r3 | |
| 71 | ble L4 | |
| 72 | ||
| 73 | /* Invert param1 and neg */ | |
| 74 | movd $-1, (r9, r8) /* Temp set to FFFFFFFF */ | |
| 75 | xord (r9, r8), (r1, r0) /* Xor low bits of param 1 with temp */ | |
| 76 | xord (r9, r8), (r3, r2) /* Xor high bits of param 1 with temp */ | |
| 77 | addd $1, (r1, r0) /* Add 1 to low bits of param 1 */ | |
| 78 | xorw $1, r10 /* Invert neg */ | |
| 79 | bcc L4 /* If no carry occurred go to L4 */ | |
| 80 | addd $1, (r3, r2) /* Add 1 to high bits of param 1 */ | |
| 81 | ||
| 82 | L4: stord (r1, r0), 0(sp) | |
| 83 | stord (r3, r2), 4(sp) | |
| 84 | ||
| 85 | /* Compare if param2 is greater than 0 */ | |
| 86 | cmpw $0, r7 | |
| 87 | ble L5 | |
| 88 | ||
| 89 | /* Invert param2 and neg */ | |
| 90 | movd $-1, (r9, r8) /* Temp set to FFFFFFFF */ | |
| 91 | xord (r9, r8), (r5, r4) /* Xor low bits of param 2 with temp */ | |
| 92 | xord (r9, r8), (r7, r6) /* Xor high bits of param 2 with temp */ | |
| 93 | addd $1, (r5, r4) /* Add 1 to low bits of param 2 */ | |
| 94 | xorw $1, r10 /* Invert neg */ | |
| 95 | bcc L5 /* If no carry occurred go to L5 */ | |
| 96 | addd $1, (r7, r6) /* Add 1 to high bits of param 2 */ | |
| 97 | ||
| 98 | L5: stord (r5, r4), 8(sp) | |
| 99 | stord (r7, r6), 12(sp) | |
| 100 | movw $0, r2 | |
| 101 | ||
| 102 | /* Call udivmoddi3 */ | |
| 103 | #ifdef __PIC__ | |
| 104 | loadd ___udivmoddi3@cGOT(r12), (r1,r0) | |
| 105 | jal (r1,r0) | |
| 106 | #else | |
| 107 | bal (ra), ___udivmoddi3 | |
| 108 | #endif | |
| 109 | ||
| 110 | /* If (neg) */ | |
| 111 | addd $16, (sp) | |
| 112 | cmpw $0, r10 /* Compare 0 with neg */ | |
| 113 | beq Lexit__ | |
| 114 | ||
| 115 | /* Neg = -Neg */ | |
| 116 | xord (r9, r8), (r1, r0) /* Xor low bits of ures with temp */ | |
| 117 | xord (r9, r8), (r3, r2) /* Xor high bits of ures with temp */ | |
| 118 | addd $1, (r1, r0) /* Add 1 to low bits of ures */ | |
| 119 | bcc Lexit__ | |
| 120 | addd $1, (r3, r2) /* Add 1 to high bit of ures */ | |
| 121 | ||
| 122 | Lexit__: | |
| 123 | # ifdef __ID_SHARED_LIB__ | |
| 124 | pop $2, r12 | |
| 125 | # endif | |
| 126 | popret $4, r7, ra | |
| 127 | #endif | |
| 128 | ||
| 129 | #ifdef L_lshrdi3 | |
| 130 | .text | |
| 131 | .align 4 | |
| 132 | .globl ___lshrdi3 | |
| 133 | ||
| 134 | ___lshrdi3: | |
| 135 | push $3, r7 | |
| 136 | ||
| 137 | /* Load parameters from stack in this order */ | |
| 138 | movw r2, r6 /* Number of shifts */ | |
| 139 | loadd 6(sp), (r1, r0) /* Low bits */ | |
| 140 | loadd 10(sp), (r3, r2)/* High bits */ | |
| 141 | ||
| 142 | xorw $-1, r6 /* Invert number of shifts */ | |
| 143 | addw $1, r6 /* Add 1 by number of shifts */ | |
| 144 | ||
| 145 | movw r6, r7 /* Copy number of shifts */ | |
| 146 | ||
| 147 | tbit $15, r6 /* Test if number is negative */ | |
| 148 | bfs L2 /* If negative jump to L2 */ | |
| 149 | ||
| 150 | movd (r1, r0), (r9, r8) /* Copy low bits */ | |
| 151 | ||
| 152 | subw $32, r7 /* Calc how many bits will overflow */ | |
| 153 | /* Shift the temp low bit to the right to see the overflowing bits */ | |
| 154 | lshd r7, (r9, r8) | |
| 155 | ||
| 156 | cmpw $32, r6 /* If number of shifts is higher than 31 */ | |
| 157 | blt L1 /* Shift by moving */ | |
| 158 | ||
| 159 | lshd r6, (r3, r2) /* Shift high bits */ | |
| 160 | lshd r6, (r1, r0) /* Shift low bits */ | |
| 161 | addd (r9, r8), (r3, r2) /* Add overflow to the high bits */ | |
| 162 | popret $3, r7 /* Return */ | |
| 163 | ||
| 164 | L1: movd $0, (r1, r0) /* Reset low bit */ | |
| 165 | movd (r9, r8), (r3, r2) /* Add the overflow from the low bit */ | |
| 166 | popret $3, r7 /* Return */ | |
| 167 | ||
| 168 | L2: movd (r3, r2), (r9, r8) /* Copy high bits */ | |
| 169 | ||
| 170 | addw $32, r7 /* Calc how many bits will overflow */ | |
| 171 | /* Shift the temp low bit to the left to see the overflowing bits */ | |
| 172 | lshd r7, (r9, r8) | |
| 173 | ||
| 174 | cmpw $-32, r6 /* If number of shifts is lower than -31 */ | |
| 175 | bgt L3 /* Shift by moving */ | |
| 176 | ||
| 177 | lshd r6, (r1, r0) /* Shift low bits */ | |
| 178 | lshd r6, (r3, r2) /* Shift high bits */ | |
| 179 | addd (r9, r8), (r1, r0) /* Add overflow to the low bits */ | |
| 180 | popret $3, r7 /* Return */ | |
| 181 | ||
| 182 | L3: movd $0, (r3, r2) /* Reset the high bit */ | |
| 183 | movd (r9, r8), (r1, r0) /* Add the overflow from the high bit */ | |
| 184 | popret $3, r7 /* Return */ | |
| 185 | #endif | |
| 186 | ||
| 187 | #ifdef L_moddi3 | |
| 188 | .text | |
| 189 | .align 4 | |
| 190 | .globl ___moddi3 | |
| 191 | ||
| 192 | ___moddi3: | |
| 193 | push $4, r7, ra | |
| 194 | ||
| 195 | /* Param #1 Long Long low bit first */ | |
| 196 | loadd 12(sp), (r1, r0) | |
| 197 | loadd 16(sp), (r3, r2) | |
| 198 | ||
| 199 | /* Param #2 Long Long low bit first */ | |
| 200 | loadd 20(sp), (r5, r4) | |
| 201 | loadd 24(sp), (r7, r6) | |
| 202 | ||
| 203 | subd $18, (sp) | |
| 204 | ||
| 205 | /* Set neg to 0 */ | |
| 206 | storw $0, 16(sp) | |
| 207 | ||
| 208 | movd $-1, (r9, r8) /* Temp set to FFFFFFFF */ | |
| 209 | ||
| 210 | /* Compare if param1 is greater than 0 */ | |
| 211 | cmpw $0, r3 | |
| 212 | ble L4 | |
| 213 | ||
| 214 | /* Invert param1 and neg */ | |
| 215 | xord (r9, r8), (r1, r0) /* Xor low bits of param 1 with temp */ | |
| 216 | xord (r9, r8), (r3, r2) /* Xor high bits of param 1 with temp */ | |
| 217 | addd $1, (r1, r0) /* Add 1 to low bits of param 1 */ | |
| 218 | storw $1, 16(sp) | |
| 219 | bcc L4 /* If no carry occurred go to L4 */ | |
| 220 | addd $1, (r3, r2) /* Add 1 to high bits of param 1 */ | |
| 221 | ||
| 222 | L4: stord (r1, r0), 0(sp) | |
| 223 | stord (r3, r2), 4(sp) | |
| 224 | ||
| 225 | /* Compare if param2 is greater than 0 */ | |
| 226 | cmpw $0, r7 | |
| 227 | ble L5 | |
| 228 | ||
| 229 | /* Invert param2 and neg */ | |
| 230 | xord (r9, r8), (r5, r4) /* Xor low bits of param 2 with temp */ | |
| 231 | xord (r9, r8), (r7, r6) /* Xor high bits of param 2 with temp */ | |
| 232 | addd $1, (r5, r4) /* Add 1 to low bits of param 2 */ | |
| 233 | bcc L5 /* If no carry occurred go to L5 */ | |
| 234 | addd $1, (r7, r6) /* Add 1 to high bits of param 2 */ | |
| 235 | ||
| 236 | L5: stord (r5, r4), 8(sp) | |
| 237 | stord (r7, r6), 12(sp) | |
| 238 | movw $1, r2 | |
| 239 | ||
| 240 | /* Call udivmoddi3 */ | |
| 241 | #ifdef __PIC__ | |
| 242 | loadd ___udivmoddi3@cGOT(r12), (r1,r0) | |
| 243 | jal (r1,r0) | |
| 244 | #else | |
| 245 | bal (ra), ___udivmoddi3 | |
| 246 | #endif | |
| 247 | ||
| 248 | /* If (neg) */ | |
| 249 | loadw 16(sp), r10 /* Load neg from stack */ | |
| 250 | addd $18, (sp) | |
| 251 | cmpw $0, r10 /* Compare 0 with neg */ | |
| 252 | beq Lexit__ | |
| 253 | ||
| 254 | /* Neg = -Neg */ | |
| 255 | xord (r9, r8), (r1, r0) /* Xor low bits of ures with temp */ | |
| 256 | xord (r9, r8), (r3, r2) /* Xor high bits of ures with temp */ | |
| 257 | addd $1, (r1, r0) /* Add 1 to low bits of ures */ | |
| 258 | bcc Lexit__ | |
| 259 | addd $1, (r3, r2) /* Add 1 to high bit of ures */ | |
| 260 | Lexit__: | |
| 261 | # ifdef __ID_SHARED_LIB__ | |
| 262 | pop $2, r12 | |
| 263 | # endif | |
| 264 | popret $4, r7, ra | |
| 265 | #endif | |
| 266 | ||
| 267 | #ifdef L_muldi3 | |
| 268 | .text | |
| 269 | .align 4 | |
| 270 | .globl ___muldi3 | |
| 271 | ||
| 272 | ___muldi3: | |
| 273 | push $2, r13 | |
| 274 | push $7, r7 | |
| 275 | ||
| 276 | /* Param #1 Long Long low bit first */ | |
| 277 | loadd 18(sp), (r1, r0) | |
| 278 | loadd 22(sp), (r3, r2) | |
| 279 | ||
| 280 | /* Param #2 Long Long low bit first */ | |
| 281 | loadd 26(sp), (r5, r4) | |
| 282 | loadd 30(sp), (r7, r6) | |
| 283 | ||
| 284 | /* Clear r13, r12 */ | |
| 285 | movd $0, (r12) | |
| 286 | movd $0, (r13) | |
| 287 | ||
| 288 | /* Set neg */ | |
| 289 | movw $0, r10 | |
| 290 | ||
| 291 | /* Compare if param1 is greater than 0 */ | |
| 292 | cmpw $0, r3 | |
| 293 | ble L1 | |
| 294 | ||
| 295 | /* Invert param1 and neg */ | |
| 296 | movd $-1, (r9, r8) /* Temp set to FFFFFFFF */ | |
| 297 | xord (r9, r8), (r1, r0) /* Xor low bits of param 1 with temp */ | |
| 298 | xord (r9, r8), (r3, r2) /* Xor high bits of param 1 with temp */ | |
| 299 | addd $1, (r1, r0) /* Add 1 to low bits of param 1 */ | |
| 300 | xorw $1, r10 /* Invert neg */ | |
| 301 | bcc L1 /* If no carry occurred go to L1 */ | |
| 302 | addd $1, (r3, r2) /* Add 1 to high bits of param 1 */ | |
| 303 | ||
| 304 | L1: /* Compare if param2 is greater than 0 */ | |
| 305 | cmpw $0, r7 | |
| 306 | ble L2 | |
| 307 | ||
| 308 | /* Invert param2 and neg */ | |
| 309 | movd $-1, (r9, r8) /* Temp set to FFFFFFFF */ | |
| 310 | xord (r9, r8), (r5, r4) /* Xor low bits of param 2 with temp */ | |
| 311 | xord (r9, r8), (r7, r6) /* Xor high bits of param 2 with temp */ | |
| 312 | addd $1, (r5, r4) /* Add 1 to low bits of param 2 */ | |
| 313 | xorw $1, r10 /* Invert neg */ | |
| 314 | bcc L2 /* If no carry occurred go to L2 */ | |
| 315 | addd $1, (r7, r6) /* Add 1 to high bits of param 2 */ | |
| 316 | ||
| 317 | L2: storw r10, 18(sp) /* Store neg to stack so we can use r10 */ | |
| 318 | ||
| 319 | /* B*D */ | |
| 320 | /* Bl*Dl */ | |
| 321 | macuw r0, r4, (r12) /* Multiply r0 and r4 and add to r12 */ | |
| 322 | ||
| 323 | /* Bh*Dl */ | |
| 324 | movd $0, (r9, r8) /* Clear r9, r8 */ | |
| 325 | macuw r1, r4, (r9, r8) /* Multiply Bh*Dl and add result to (r9, r8) */ | |
| 326 | movw r9, r10 /* Shift left: r9 to r10 */ | |
| 327 | lshd $16, (r9, r8) /* Shift left: r8 to r9 */ | |
| 328 | movw $0, r11 /* Clear r11 */ | |
| 329 | addd (r9, r8), (r12) /* Add (r9, r8) to r12 */ | |
| 330 | bcc L3 /* If no carry occurred go to L3 */ | |
| 331 | addd $1, (r13) /* If carry occurred add 1 to r13 */ | |
| 332 | ||
| 333 | L3: addd (r11, r10), (r13) /* Add (r11, r10) to r13 */ | |
| 334 | ||
| 335 | /* Bl*Dh */ | |
| 336 | movd $0, (r9, r8) /* Clear (r9, r8) */ | |
| 337 | macuw r0, r5, (r9, r8) /* Multiply r0 and r5 and stor in (r9, r8) */ | |
| 338 | movw r9, r10 /* Shift left: r9 to r10 */ | |
| 339 | lshd $16, (r9, r8) /* Shift left: r8 to r9 */ | |
| 340 | addd (r9, r8), (r12) /* Add (r9, r8) to r12 */ | |
| 341 | bcc L4 /* If no carry occurred go to L4 */ | |
| 342 | addd $1, (r13) /* If carry occurred add 1 to r13 */ | |
| 343 | ||
| 344 | L4: addd (r11, r10), (r13) /* Add (r11, r10) to r13 */ | |
| 345 | ||
| 346 | /* Bh*Dh */ | |
| 347 | movd $0, (r9, r8) /* Clear (r9, r8) */ | |
| 348 | macuw r1, r5, (r9, r8) /* Multiply r1 and r5 and add to r13 */ | |
| 349 | addd (r9, r8), (r13) /* Add (r9, r8) to result */ | |
| 350 | ||
| 351 | /* A*D */ | |
| 352 | /* Al*Dl */ | |
| 353 | movd $0, (r11, r10) /* Clear (r11, r10) */ | |
| 354 | macuw r2, r4, (r11, r10)/* Multiply r2 and r4 and add to (r11, r10) */ | |
| 355 | ||
| 356 | addd (r13), (r11, r10) /* Copy r13 to (r11, r10) */ | |
| 357 | ||
| 358 | /* Al*Dh */ | |
| 359 | movd $0, (r9, r8) /* Clear (r9, r8) */ | |
| 360 | macuw r2, r5, (r9, r8) /* Multiply r2 and r5 and add to (r9, r8) */ | |
| 361 | addw r8, r11 /* Add r8 to r11 */ | |
| 362 | ||
| 363 | /* Ah*Dl */ | |
| 364 | muluw r3, (r5, r4) /* Multiply r3 and r4 and stor in (r5, r4) */ | |
| 365 | addw r4, r11 /* Add r4 to r11 */ | |
| 366 | ||
| 367 | /* B*C */ | |
| 368 | /* Bl*Cl */ | |
| 369 | movd $0, (r9, r8) /* Clear (r9, r8) */ | |
| 370 | macuw r0, r6, (r9, r8) /* Multiply r0 and r6 and add to (r9, r8) */ | |
| 371 | addd (r9, r8), (r11, r10)/* Add (r9, r8) to result */ | |
| 372 | ||
| 373 | /* Bl*Ch */ | |
| 374 | movd $0, (r9, r8) /* Clear (r9, r8) */ | |
| 375 | macuw r0, r7, (r9, r8) /* Multiply r0 and r7 and add to (r9, r8) */ | |
| 376 | addw r8, r11 /* Add r8 to r11 */ | |
| 377 | ||
| 378 | loadw 18(sp), r8 /* Load neg from stack */ | |
| 379 | ||
| 380 | /* Bh*Cl */ | |
| 381 | muluw r1, (r7, r6) /* Multiply r1 and r6 and stor in (r7, r6) */ | |
| 382 | addw r6, r11 /* Add r6 to r11 */ | |
| 383 | ||
| 384 | E1: movd (r11, r10), (r3, r2) | |
| 385 | movd (r12), (r1, r0) | |
| 386 | ||
| 387 | /* If (neg) */ | |
| 388 | cmpw $0, r8 /* Compare 0 with neg */ | |
| 389 | beq Lexit__ | |
| 390 | ||
| 391 | /* Neg = -Neg */ | |
| 392 | movd $-1, (r9, r8) /* Temp set to FFFFFFFF */ | |
| 393 | xord (r9, r8), (r1, r0) /* Xor low bits of result with temp */ | |
| 394 | xord (r9, r8), (r3, r2) /* Xor high bits of result with temp */ | |
| 395 | addd $1, (r1, r0) /* Add 1 to low bits of result */ | |
| 396 | bcc Lexit__ | |
| 397 | addd $1, (r3, r2) /* Add 1 to high bit of result */ | |
| 398 | Lexit__: | |
| 399 | pop $7, r7 | |
| 400 | popret $2, r13 | |
| 401 | #endif | |
| 402 | ||
| 403 | #ifdef L_negdi2 | |
| 404 | .text | |
| 405 | .align 4 | |
| 406 | .globl ___negdi2 | |
| 407 | ||
| 408 | ___negdi2: | |
| 409 | /* Load parameter from the registers in this order */ | |
| 410 | loadd 0(sp), (r1, r0) | |
| 411 | loadd 4(sp), (r3, r2) | |
| 412 | ||
| 413 | movd $-1, (r6, r5) /* Set temp to FFFFFFFF */ | |
| 414 | xord (r6, r5), (r1, r0) /* Xor low bits with temp */ | |
| 415 | xord (r6, r5), (r3, r2) /* Xor high bits with temp */ | |
| 416 | addd $1, (r1, r0) /* Add one */ | |
| 417 | jcc (ra) | |
| 418 | addd $1, (r3, r2) /* Add the carry to the high bits */ | |
| 419 | jump (ra) | |
| 420 | #endif | |
| 421 | ||
| 422 | #ifdef L_udivdi3 | |
| 423 | .text | |
| 424 | .align 4 | |
| 425 | .globl ___udivdi3 | |
| 426 | ||
| 427 | ___udivdi3: | |
| 428 | movw $0, r2 | |
| 429 | br ___udivmoddi3 | |
| 430 | #endif | |
| 431 | ||
| 432 | #ifdef L_udivmoddi3 | |
| 433 | .text | |
| 434 | .align 4 | |
| 435 | .globl ___udivmoddi3 | |
| 436 | ||
| 437 | ___udivmoddi3: | |
| 438 | push $2, r13 | |
| 439 | push $7, r7 | |
| 440 | ||
| 441 | /* Param #1 Long Long low bit first */ | |
| 442 | loadd 18(sp), (r1, r0) | |
| 443 | storw r2, 18(sp) /* Store modulo on stack */ | |
| 444 | loadd 22(sp), (r3, r2) | |
| 445 | ||
| 446 | /* Param #2 Long Long low bit first */ | |
| 447 | loadd 26(sp), (r5, r4) | |
| 448 | loadd 30(sp), (r7, r6) | |
| 449 | ||
| 450 | /* Set ures to 0 */ | |
| 451 | movd $0, (r13) | |
| 452 | movd $0, (r12) | |
| 453 | ||
| 454 | cmpd (r12), (r5, r4) | |
| 455 | beq LE | |
| 456 | ||
| 457 | L5: movd $1, (r9, r8) /* Store 1 in low bits from bit */ | |
| 458 | movd $0, (r11, r10) /* Store 0 in high bits from bit */ | |
| 459 | ||
| 460 | L6: /* While (den < num && (!den & (1LL<<63))) */ | |
| 461 | /* Compare high bits from param 1 and param 2 */ | |
| 462 | cmpd (r7, r6), (r3, r2) | |
| 463 | bhi L10 /* If param 2 is greater go to L10 */ | |
| 464 | bne L8 /* If param 1 is greater go to L8 */ | |
| 465 | cmpd (r5, r4), (r1, r0) /* Compare low bits from param 1 and param 2 */ | |
| 466 | /* If param 2 is greater or the same go to L1 */ | |
| 467 | bhs L10 | |
| 468 | ||
| 469 | L8: /* Check if most significant bit of param 2 is set */ | |
| 470 | tbit $15, r7 | |
| 471 | bfs L10 /* If PSR is set go to L10 */ | |
| 472 | ||
| 473 | /* Shift bit */ | |
| 474 | lshd $1, (r11, r10) /* Shift left: high bits of bit */ | |
| 475 | /* Check if most significant bit of bit is set */ | |
| 476 | tbit $15, r9 | |
| 477 | lshd $1, (r9, r8) /* Shift left: low bits of bit */ | |
| 478 | bfs L28 /* If PSR is set go to L28 */ | |
| 479 | ||
| 480 | L9: /* Shift b */ | |
| 481 | lshd $1, (r7, r6) /* Shift left: high bits of param 2 */ | |
| 482 | /* Check if most significant bit of param 2 is set */ | |
| 483 | tbit $15, r5 | |
| 484 | lshd $1, (r5, r4) /* Shift left: low bits of param 2 */ | |
| 485 | bfc L6 /* If PSR is set go to L6 */ | |
| 486 | addw $1, r6 /* Add 1 to the highest bits of b */ | |
| 487 | br L6 /* Go to L6 */ | |
| 488 | ||
| 489 | L10: /* While (bit) */ | |
| 490 | cmpd $0, (r11, r10) | |
| 491 | bne L11 | |
| 492 | cmpd $0, (r9, r8) | |
| 493 | beq E1 | |
| 494 | ||
| 495 | L11: /* If (num >= den) */ | |
| 496 | cmpd (r3, r2), (r7, r6) /* Compare high bits of param 1 and param 2 */ | |
| 497 | blo L15 /* If param 1 lower than param 2 go to L15 */ | |
| 498 | bne L12 /* If not equal go to L12 */ | |
| 499 | cmpd (r1, r0), (r5, r4) /* Compare low bits of param 1 and param 2 */ | |
| 500 | blo L15 /* If param 1 lower than param 2 go to L15 */ | |
| 501 | ||
| 502 | L12: /* Ures |= bit */ | |
| 503 | ord (r11, r10), (r13) | |
| 504 | ord (r9, r8), (r12) | |
| 505 | ||
| 506 | /* Num -= den */ | |
| 507 | subd (r7, r6), (r3, r2) /* Subtract highest 32 bits from each other */ | |
| 508 | subd (r5, r4), (r1, r0) /* Subtract lowest 32 bits from each other */ | |
| 509 | bcc L15 /* If no carry occurred go to L15 */ | |
| 510 | subd $1, (r3, r2) /* Subtract the carry */ | |
| 511 | ||
| 512 | L15: /* Shift bit to the right */ | |
| 513 | lshd $-1, (r9, r8) /* Shift right: low bits of bit */ | |
| 514 | /* Check if least significant bit of high bits is set */ | |
| 515 | tbit $0, r10 | |
| 516 | lshd $-1, (r11, r10) /* Shift right: high bits of bit */ | |
| 517 | bfs L18 /* If PSR is set go to L18 */ | |
| 518 | ||
| 519 | L17: /* Shift param#2 to the right */ | |
| 520 | lshd $-1, (r5, r4) /* Shift right: low bits of param 2 */ | |
| 521 | /* Check if least significant bit of high bits is set */ | |
| 522 | tbit $0, r6 | |
| 523 | lshd $-1, (r7, r6) /* Shift right: high bits of param 2 */ | |
| 524 | bfc L10 /* If PSR is not set go to L10 */ | |
| 525 | /* Or with 0x8000 to set most significant bit */ | |
| 526 | orw $32768, r5 | |
| 527 | br L10 /* Go to L10 */ | |
| 528 | ||
| 529 | L18: /* Or with 0x8000 to set most significant bit */ | |
| 530 | orw $32768, r9 | |
| 531 | br L17 | |
| 532 | ||
| 533 | L28: /* Left shift bit */ | |
| 534 | addw $1, r10 /* Add 1 to highest bits of bit */ | |
| 535 | br L9 /* Go to L9 */ | |
| 536 | ||
| 537 | LE: cmpd (r12), (r7, r6) | |
| 538 | bne L5 | |
| 539 | excp dvz | |
| 540 | br Lexit__ | |
| 541 | ||
| 542 | E1: loadw 18(sp), r4 | |
| 543 | cmpw $0, r4 | |
| 544 | bne Lexit__ | |
| 545 | ||
| 546 | /* Return result */ | |
| 547 | movd (r12), (r1, r0) | |
| 548 | movd (r13), (r3, r2) | |
| 549 | Lexit__: | |
| 550 | pop $7, r7 | |
| 551 | popret $2, r13 | |
| 552 | #endif | |
| 553 | ||
| 554 | #ifdef L_umoddi3 | |
| 555 | .text | |
| 556 | .align 4 | |
| 557 | .globl ___umoddi3 | |
| 558 | ||
| 559 | ___umoddi3: | |
| 560 | movw $1, r2 | |
| 561 | br ___udivmoddi3 | |
| 562 | #endif | |
| 563 |