1# Copyright (c) 2008 The Regents of The University of Michigan 2# All rights reserved. 3# 4# Redistribution and use in source and binary forms, with or without 5# modification, are permitted provided that the following conditions are 6# met: redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer; 8# redistributions in binary form must reproduce the above copyright --- 70 unchanged lines hidden (view full) --- 79# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 80# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 81# 82# Authors: Gabe Black 83 84microcode = ''' 85def macroop BSF_R_R { 86 # Determine if the input was zero, and also move it to a temp reg. |
87 movi t1, t1, t0, dataSize=8 |
88 and t1, regm, regm, flags=(ZF,) 89 bri t0, label("end"), flags=(CZF,) 90 91 # Zero out the result register 92 movi reg, reg, 0x0 93 94 # Bit 6 |
95 srli t3, t1, 32, dataSize=8, flags=(EZF,) |
96 ori t4, reg, 0x20 97 mov reg, reg, t4, flags=(nCEZF,) 98 mov t1, t1, t3, flags=(nCEZF,) 99 100 # Bit 5 |
101 srli t3, t1, 16, dataSize=8, flags=(EZF,) |
102 ori t4, reg, 0x10 103 mov reg, reg, t4, flags=(nCEZF,) 104 mov t1, t1, t3, flags=(nCEZF,) 105 106 # Bit 4 |
107 srli t3, t1, 8, dataSize=8, flags=(EZF,) |
108 ori t4, reg, 0x8 109 mov reg, reg, t4, flags=(nCEZF,) 110 mov t1, t1, t3, flags=(nCEZF,) 111 112 # Bit 3 |
113 srli t3, t1, 4, dataSize=8, flags=(EZF,) |
114 ori t4, reg, 0x4 115 mov reg, reg, t4, flags=(nCEZF,) 116 mov t1, t1, t3, flags=(nCEZF,) 117 118 # Bit 2 |
119 srli t3, t1, 2, dataSize=8, flags=(EZF,) |
120 ori t4, reg, 0x2 121 mov reg, reg, t4, flags=(nCEZF,) 122 mov t1, t1, t3, flags=(nCEZF,) 123 124 # Bit 1 |
125 srli t3, t1, 1, dataSize=8, flags=(EZF,) |
126 ori t4, reg, 0x1 127 mov reg, reg, t4, flags=(nCEZF,) 128 mov t1, t1, t3, flags=(nCEZF,) 129 130end: 131 fault "NoFault" 132}; 133 134def macroop BSF_R_M { 135 |
136 movi t1, t1, t0, dataSize=8 |
137 ld t1, seg, sib, disp 138 139 # Determine if the input was zero, and also move it to a temp reg. 140 and t1, t1, t1, flags=(ZF,) 141 bri t0, label("end"), flags=(CZF,) 142 143 # Zero out the result register 144 movi reg, reg, 0x0 145 146 # Bit 6 |
147 srli t3, t1, 32, dataSize=8, flags=(EZF,) |
148 ori t4, reg, 0x20 149 mov reg, reg, t4, flags=(nCEZF,) 150 mov t1, t1, t3, flags=(nCEZF,) 151 152 # Bit 5 |
153 srli t3, t1, 16, dataSize=8, flags=(EZF,) |
154 ori t4, reg, 0x10 155 mov reg, reg, t4, flags=(nCEZF,) 156 mov t1, t1, t3, flags=(nCEZF,) 157 158 # Bit 4 |
159 srli t3, t1, 8, dataSize=8, flags=(EZF,) |
160 ori t4, reg, 0x8 161 mov reg, reg, t4, flags=(nCEZF,) 162 mov t1, t1, t3, flags=(nCEZF,) 163 164 # Bit 3 |
165 srli t3, t1, 4, dataSize=8, flags=(EZF,) |
166 ori t4, reg, 0x4 167 mov reg, reg, t4, flags=(nCEZF,) 168 mov t1, t1, t3, flags=(nCEZF,) 169 170 # Bit 2 |
171 srli t3, t1, 2, dataSize=8, flags=(EZF,) |
172 ori t4, reg, 0x2 173 mov reg, reg, t4, flags=(nCEZF,) 174 mov t1, t1, t3, flags=(nCEZF,) 175 176 # Bit 1 |
177 srli t3, t1, 1, dataSize=8, flags=(EZF,) |
178 ori t4, reg, 0x1 179 mov reg, reg, t4, flags=(nCEZF,) 180 mov t1, t1, t3, flags=(nCEZF,) 181 182end: 183 fault "NoFault" 184}; 185 186def macroop BSF_R_P { 187 188 rdip t7 |
189 movi t1, t1, t0, dataSize=8 |
190 ld t1, seg, riprel, disp 191 192 # Determine if the input was zero, and also move it to a temp reg. 193 and t1, t1, t1, flags=(ZF,) 194 bri t0, label("end"), flags=(CZF,) 195 196 # Zero out the result register 197 movi reg, reg, 0x0 198 199 # Bit 6 |
200 srli t3, t1, 32, dataSize=8, flags=(EZF,) |
201 ori t4, reg, 0x20 202 mov reg, reg, t4, flags=(nCEZF,) 203 mov t1, t1, t3, flags=(nCEZF,) 204 205 # Bit 5 |
206 srli t3, t1, 16, dataSize=8, flags=(EZF,) |
207 ori t4, reg, 0x10 208 mov reg, reg, t4, flags=(nCEZF,) 209 mov t1, t1, t3, flags=(nCEZF,) 210 211 # Bit 4 |
212 srli t3, t1, 8, dataSize=8, flags=(EZF,) |
213 ori t4, reg, 0x8 214 mov reg, reg, t4, flags=(nCEZF,) 215 mov t1, t1, t3, flags=(nCEZF,) 216 217 # Bit 3 |
218 srli t3, t1, 4, dataSize=8, flags=(EZF,) |
219 ori t4, reg, 0x4 220 mov reg, reg, t4, flags=(nCEZF,) 221 mov t1, t1, t3, flags=(nCEZF,) 222 223 # Bit 2 |
224 srli t3, t1, 2, dataSize=8, flags=(EZF,) |
225 ori t4, reg, 0x2 226 mov reg, reg, t4, flags=(nCEZF,) 227 mov t1, t1, t3, flags=(nCEZF,) 228 229 # Bit 1 |
230 srli t3, t1, 1, dataSize=8, flags=(EZF,) |
231 ori t4, reg, 0x1 232 mov reg, reg, t4, flags=(nCEZF,) 233 mov t1, t1, t3, flags=(nCEZF,) 234 235end: 236 fault "NoFault" 237}; 238 239def macroop BSR_R_R { 240 # Determine if the input was zero, and also move it to a temp reg. |
241 mov t1, t1, t0, dataSize=8 |
242 and t1, regm, regm, flags=(ZF,) 243 bri t0, label("end"), flags=(CZF,) 244 245 # Zero out the result register 246 movi reg, reg, 0 247 |
248 subi t2, t1, 1 249 xor t1, t2, t1 250 |
251 # Bit 6 |
252 srli t3, t1, 32, dataSize=8 253 andi t3, t3, 32 254 or reg, reg, t3 |
255 256 # Bit 5 |
257 srli t3, t1, 16, dataSize=8 258 andi t3, t3, 16 259 or reg, reg, t3 |
260 261 # Bit 4 |
262 srli t3, t1, 8, dataSize=8 263 andi t3, t3, 8 264 or reg, reg, t3 |
265 266 # Bit 3 |
267 srli t3, t1, 4, dataSize=8 268 andi t3, t3, 4 269 or reg, reg, t3 |
270 271 # Bit 2 |
272 srli t3, t1, 2, dataSize=8 273 andi t3, t3, 2 274 or reg, reg, t3 |
275 276 # Bit 1 |
277 srli t3, t1, 1, dataSize=8 278 andi t3, t3, 1 279 or reg, reg, t3 |
280 281end: 282 fault "NoFault" 283}; 284 285def macroop BSR_R_M { 286 |
287 mov t1, t1, t0, dataSize=8 |
288 ld t1, seg, sib, disp 289 290 # Determine if the input was zero, and also move it to a temp reg. 291 and t1, t1, t1, flags=(ZF,) 292 bri t0, label("end"), flags=(CZF,) 293 294 # Zero out the result register 295 mov reg, reg, t0 296 |
297 subi t2, t1, 1 298 xor t1, t2, t1 299 |
300 # Bit 6 |
301 srli t3, t1, 32, dataSize=8 302 andi t3, t3, 32 303 or reg, reg, t3 |
304 305 # Bit 5 |
306 srli t3, t1, 16, dataSize=8 307 andi t3, t3, 16 308 or reg, reg, t3 |
309 310 # Bit 4 |
311 srli t3, t1, 8, dataSize=8 312 andi t3, t3, 8 313 or reg, reg, t3 |
314 315 # Bit 3 |
316 srli t3, t1, 4, dataSize=8 317 andi t3, t3, 4 318 or reg, reg, t3 |
319 320 # Bit 2 |
321 srli t3, t1, 2, dataSize=8 322 andi t3, t3, 2 323 or reg, reg, t3 |
324 325 # Bit 1 |
326 srli t3, t1, 1, dataSize=8 327 andi t3, t3, 1 328 or reg, reg, t3 |
329 330end: 331 fault "NoFault" 332}; 333 334def macroop BSR_R_P { 335 336 rdip t7 |
337 mov t1, t1, t0, dataSize=8 |
338 ld t1, seg, riprel, disp 339 340 # Determine if the input was zero, and also move it to a temp reg. 341 and t1, t1, t1, flags=(ZF,) 342 bri t0, label("end"), flags=(CZF,) 343 344 # Zero out the result register 345 mov reg, reg, t0 346 |
347 subi t2, t1, 1 348 xor t1, t2, t1 349 |
350 # Bit 6 |
351 srli t3, t1, 32, dataSize=8 352 andi t3, t3, 32 353 or reg, reg, t3 |
354 355 # Bit 5 |
356 srli t3, t1, 16, dataSize=8 357 andi t3, t3, 16 358 or reg, reg, t3 |
359 360 # Bit 4 |
361 srli t3, t1, 8, dataSize=8 362 andi t3, t3, 8 363 or reg, reg, t3 |
364 365 # Bit 3 |
366 srli t3, t1, 4, dataSize=8 367 andi t3, t3, 4 368 or reg, reg, t3 |
369 370 # Bit 2 |
371 srli t3, t1, 2, dataSize=8 372 andi t3, t3, 2 373 or reg, reg, t3 |
374 375 # Bit 1 |
376 srli t3, t1, 1, dataSize=8 377 andi t3, t3, 1 378 or reg, reg, t3 |
379 380end: 381 fault "NoFault" 382}; 383''' |