tlb.cc (6132:916f10213bea) | tlb.cc (6141:5babc3f3d8c8) |
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1/* 2 * Copyright (c) 2007-2008 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 5 * Redistribution and use of this software in source and binary forms, 6 * with or without modification, are permitted provided that the 7 * following conditions are met: 8 * --- 172 unchanged lines hidden (view full) --- 181 EntryList::iterator entry = lookupIt(va, false); 182 if (entry != entryList.end()) { 183 freeList.push_back(*entry); 184 entryList.erase(entry); 185 } 186} 187 188Fault | 1/* 2 * Copyright (c) 2007-2008 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 5 * Redistribution and use of this software in source and binary forms, 6 * with or without modification, are permitted provided that the 7 * following conditions are met: 8 * --- 172 unchanged lines hidden (view full) --- 181 EntryList::iterator entry = lookupIt(va, false); 182 if (entry != entryList.end()) { 183 freeList.push_back(*entry); 184 entryList.erase(entry); 185 } 186} 187 188Fault |
189TLB::translate(RequestPtr req, ThreadContext *tc, Translation *translation, 190 Mode mode, bool &delayedResponse, bool timing) | 189TLB::translateInt(RequestPtr req, ThreadContext *tc) |
191{ | 190{ |
192 delayedResponse = false; | 191 DPRINTF(TLB, "Addresses references internal memory.\n"); |
193 Addr vaddr = req->getVaddr(); | 192 Addr vaddr = req->getVaddr(); |
194 DPRINTF(TLB, "Translating vaddr %#x.\n", vaddr); 195 uint32_t flags = req->getFlags(); 196 bool storeCheck = flags & (StoreCheck << FlagShift); | 193 Addr prefix = (vaddr >> 3) & IntAddrPrefixMask; 194 if (prefix == IntAddrPrefixCPUID) { 195 panic("CPUID memory space not yet implemented!\n"); 196 } else if (prefix == IntAddrPrefixMSR) { 197 vaddr = vaddr >> 3; 198 req->setMmapedIpr(true); 199 Addr regNum = 0; 200 switch (vaddr & ~IntAddrPrefixMask) { 201 case 0x10: 202 regNum = MISCREG_TSC; 203 break; 204 case 0x1B: 205 regNum = MISCREG_APIC_BASE; 206 break; 207 case 0xFE: 208 regNum = MISCREG_MTRRCAP; 209 break; 210 case 0x174: 211 regNum = MISCREG_SYSENTER_CS; 212 break; 213 case 0x175: 214 regNum = MISCREG_SYSENTER_ESP; 215 break; 216 case 0x176: 217 regNum = MISCREG_SYSENTER_EIP; 218 break; 219 case 0x179: 220 regNum = MISCREG_MCG_CAP; 221 break; 222 case 0x17A: 223 regNum = MISCREG_MCG_STATUS; 224 break; 225 case 0x17B: 226 regNum = MISCREG_MCG_CTL; 227 break; 228 case 0x1D9: 229 regNum = MISCREG_DEBUG_CTL_MSR; 230 break; 231 case 0x1DB: 232 regNum = MISCREG_LAST_BRANCH_FROM_IP; 233 break; 234 case 0x1DC: 235 regNum = MISCREG_LAST_BRANCH_TO_IP; 236 break; 237 case 0x1DD: 238 regNum = MISCREG_LAST_EXCEPTION_FROM_IP; 239 break; 240 case 0x1DE: 241 regNum = MISCREG_LAST_EXCEPTION_TO_IP; 242 break; 243 case 0x200: 244 regNum = MISCREG_MTRR_PHYS_BASE_0; 245 break; 246 case 0x201: 247 regNum = MISCREG_MTRR_PHYS_MASK_0; 248 break; 249 case 0x202: 250 regNum = MISCREG_MTRR_PHYS_BASE_1; 251 break; 252 case 0x203: 253 regNum = MISCREG_MTRR_PHYS_MASK_1; 254 break; 255 case 0x204: 256 regNum = MISCREG_MTRR_PHYS_BASE_2; 257 break; 258 case 0x205: 259 regNum = MISCREG_MTRR_PHYS_MASK_2; 260 break; 261 case 0x206: 262 regNum = MISCREG_MTRR_PHYS_BASE_3; 263 break; 264 case 0x207: 265 regNum = MISCREG_MTRR_PHYS_MASK_3; 266 break; 267 case 0x208: 268 regNum = MISCREG_MTRR_PHYS_BASE_4; 269 break; 270 case 0x209: 271 regNum = MISCREG_MTRR_PHYS_MASK_4; 272 break; 273 case 0x20A: 274 regNum = MISCREG_MTRR_PHYS_BASE_5; 275 break; 276 case 0x20B: 277 regNum = MISCREG_MTRR_PHYS_MASK_5; 278 break; 279 case 0x20C: 280 regNum = MISCREG_MTRR_PHYS_BASE_6; 281 break; 282 case 0x20D: 283 regNum = MISCREG_MTRR_PHYS_MASK_6; 284 break; 285 case 0x20E: 286 regNum = MISCREG_MTRR_PHYS_BASE_7; 287 break; 288 case 0x20F: 289 regNum = MISCREG_MTRR_PHYS_MASK_7; 290 break; 291 case 0x250: 292 regNum = MISCREG_MTRR_FIX_64K_00000; 293 break; 294 case 0x258: 295 regNum = MISCREG_MTRR_FIX_16K_80000; 296 break; 297 case 0x259: 298 regNum = MISCREG_MTRR_FIX_16K_A0000; 299 break; 300 case 0x268: 301 regNum = MISCREG_MTRR_FIX_4K_C0000; 302 break; 303 case 0x269: 304 regNum = MISCREG_MTRR_FIX_4K_C8000; 305 break; 306 case 0x26A: 307 regNum = MISCREG_MTRR_FIX_4K_D0000; 308 break; 309 case 0x26B: 310 regNum = MISCREG_MTRR_FIX_4K_D8000; 311 break; 312 case 0x26C: 313 regNum = MISCREG_MTRR_FIX_4K_E0000; 314 break; 315 case 0x26D: 316 regNum = MISCREG_MTRR_FIX_4K_E8000; 317 break; 318 case 0x26E: 319 regNum = MISCREG_MTRR_FIX_4K_F0000; 320 break; 321 case 0x26F: 322 regNum = MISCREG_MTRR_FIX_4K_F8000; 323 break; 324 case 0x277: 325 regNum = MISCREG_PAT; 326 break; 327 case 0x2FF: 328 regNum = MISCREG_DEF_TYPE; 329 break; 330 case 0x400: 331 regNum = MISCREG_MC0_CTL; 332 break; 333 case 0x404: 334 regNum = MISCREG_MC1_CTL; 335 break; 336 case 0x408: 337 regNum = MISCREG_MC2_CTL; 338 break; 339 case 0x40C: 340 regNum = MISCREG_MC3_CTL; 341 break; 342 case 0x410: 343 regNum = MISCREG_MC4_CTL; 344 break; 345 case 0x414: 346 regNum = MISCREG_MC5_CTL; 347 break; 348 case 0x418: 349 regNum = MISCREG_MC6_CTL; 350 break; 351 case 0x41C: 352 regNum = MISCREG_MC7_CTL; 353 break; 354 case 0x401: 355 regNum = MISCREG_MC0_STATUS; 356 break; 357 case 0x405: 358 regNum = MISCREG_MC1_STATUS; 359 break; 360 case 0x409: 361 regNum = MISCREG_MC2_STATUS; 362 break; 363 case 0x40D: 364 regNum = MISCREG_MC3_STATUS; 365 break; 366 case 0x411: 367 regNum = MISCREG_MC4_STATUS; 368 break; 369 case 0x415: 370 regNum = MISCREG_MC5_STATUS; 371 break; 372 case 0x419: 373 regNum = MISCREG_MC6_STATUS; 374 break; 375 case 0x41D: 376 regNum = MISCREG_MC7_STATUS; 377 break; 378 case 0x402: 379 regNum = MISCREG_MC0_ADDR; 380 break; 381 case 0x406: 382 regNum = MISCREG_MC1_ADDR; 383 break; 384 case 0x40A: 385 regNum = MISCREG_MC2_ADDR; 386 break; 387 case 0x40E: 388 regNum = MISCREG_MC3_ADDR; 389 break; 390 case 0x412: 391 regNum = MISCREG_MC4_ADDR; 392 break; 393 case 0x416: 394 regNum = MISCREG_MC5_ADDR; 395 break; 396 case 0x41A: 397 regNum = MISCREG_MC6_ADDR; 398 break; 399 case 0x41E: 400 regNum = MISCREG_MC7_ADDR; 401 break; 402 case 0x403: 403 regNum = MISCREG_MC0_MISC; 404 break; 405 case 0x407: 406 regNum = MISCREG_MC1_MISC; 407 break; 408 case 0x40B: 409 regNum = MISCREG_MC2_MISC; 410 break; 411 case 0x40F: 412 regNum = MISCREG_MC3_MISC; 413 break; 414 case 0x413: 415 regNum = MISCREG_MC4_MISC; 416 break; 417 case 0x417: 418 regNum = MISCREG_MC5_MISC; 419 break; 420 case 0x41B: 421 regNum = MISCREG_MC6_MISC; 422 break; 423 case 0x41F: 424 regNum = MISCREG_MC7_MISC; 425 break; 426 case 0xC0000080: 427 regNum = MISCREG_EFER; 428 break; 429 case 0xC0000081: 430 regNum = MISCREG_STAR; 431 break; 432 case 0xC0000082: 433 regNum = MISCREG_LSTAR; 434 break; 435 case 0xC0000083: 436 regNum = MISCREG_CSTAR; 437 break; 438 case 0xC0000084: 439 regNum = MISCREG_SF_MASK; 440 break; 441 case 0xC0000100: 442 regNum = MISCREG_FS_BASE; 443 break; 444 case 0xC0000101: 445 regNum = MISCREG_GS_BASE; 446 break; 447 case 0xC0000102: 448 regNum = MISCREG_KERNEL_GS_BASE; 449 break; 450 case 0xC0000103: 451 regNum = MISCREG_TSC_AUX; 452 break; 453 case 0xC0010000: 454 regNum = MISCREG_PERF_EVT_SEL0; 455 break; 456 case 0xC0010001: 457 regNum = MISCREG_PERF_EVT_SEL1; 458 break; 459 case 0xC0010002: 460 regNum = MISCREG_PERF_EVT_SEL2; 461 break; 462 case 0xC0010003: 463 regNum = MISCREG_PERF_EVT_SEL3; 464 break; 465 case 0xC0010004: 466 regNum = MISCREG_PERF_EVT_CTR0; 467 break; 468 case 0xC0010005: 469 regNum = MISCREG_PERF_EVT_CTR1; 470 break; 471 case 0xC0010006: 472 regNum = MISCREG_PERF_EVT_CTR2; 473 break; 474 case 0xC0010007: 475 regNum = MISCREG_PERF_EVT_CTR3; 476 break; 477 case 0xC0010010: 478 regNum = MISCREG_SYSCFG; 479 break; 480 case 0xC0010016: 481 regNum = MISCREG_IORR_BASE0; 482 break; 483 case 0xC0010017: 484 regNum = MISCREG_IORR_BASE1; 485 break; 486 case 0xC0010018: 487 regNum = MISCREG_IORR_MASK0; 488 break; 489 case 0xC0010019: 490 regNum = MISCREG_IORR_MASK1; 491 break; 492 case 0xC001001A: 493 regNum = MISCREG_TOP_MEM; 494 break; 495 case 0xC001001D: 496 regNum = MISCREG_TOP_MEM2; 497 break; 498 case 0xC0010114: 499 regNum = MISCREG_VM_CR; 500 break; 501 case 0xC0010115: 502 regNum = MISCREG_IGNNE; 503 break; 504 case 0xC0010116: 505 regNum = MISCREG_SMM_CTL; 506 break; 507 case 0xC0010117: 508 regNum = MISCREG_VM_HSAVE_PA; 509 break; 510 default: 511 return new GeneralProtection(0); 512 } 513 //The index is multiplied by the size of a MiscReg so that 514 //any memory dependence calculations will not see these as 515 //overlapping. 516 req->setPaddr(regNum * sizeof(MiscReg)); 517 return NoFault; 518 } else if (prefix == IntAddrPrefixIO) { 519 // TODO If CPL > IOPL or in virtual mode, check the I/O permission 520 // bitmap in the TSS. |
197 | 521 |
198 int seg = flags & SegmentFlagMask; 199 200 // If this is true, we're dealing with a request to read an internal 201 // value. 202 if (seg == SEGMENT_REG_MS) { 203 DPRINTF(TLB, "Addresses references internal memory.\n"); 204 Addr prefix = (vaddr >> 3) & IntAddrPrefixMask; 205 if (prefix == IntAddrPrefixCPUID) { 206 panic("CPUID memory space not yet implemented!\n"); 207 } else if (prefix == IntAddrPrefixMSR) { 208 vaddr = vaddr >> 3; | 522 Addr IOPort = vaddr & ~IntAddrPrefixMask; 523 // Make sure the address fits in the expected 16 bit IO address 524 // space. 525 assert(!(IOPort & ~0xFFFF)); 526 if (IOPort == 0xCF8 && req->getSize() == 4) { |
209 req->setMmapedIpr(true); | 527 req->setMmapedIpr(true); |
210 Addr regNum = 0; 211 switch (vaddr & ~IntAddrPrefixMask) { 212 case 0x10: 213 regNum = MISCREG_TSC; 214 break; 215 case 0x1B: 216 regNum = MISCREG_APIC_BASE; 217 break; 218 case 0xFE: 219 regNum = MISCREG_MTRRCAP; 220 break; 221 case 0x174: 222 regNum = MISCREG_SYSENTER_CS; 223 break; 224 case 0x175: 225 regNum = MISCREG_SYSENTER_ESP; 226 break; 227 case 0x176: 228 regNum = MISCREG_SYSENTER_EIP; 229 break; 230 case 0x179: 231 regNum = MISCREG_MCG_CAP; 232 break; 233 case 0x17A: 234 regNum = MISCREG_MCG_STATUS; 235 break; 236 case 0x17B: 237 regNum = MISCREG_MCG_CTL; 238 break; 239 case 0x1D9: 240 regNum = MISCREG_DEBUG_CTL_MSR; 241 break; 242 case 0x1DB: 243 regNum = MISCREG_LAST_BRANCH_FROM_IP; 244 break; 245 case 0x1DC: 246 regNum = MISCREG_LAST_BRANCH_TO_IP; 247 break; 248 case 0x1DD: 249 regNum = MISCREG_LAST_EXCEPTION_FROM_IP; 250 break; 251 case 0x1DE: 252 regNum = MISCREG_LAST_EXCEPTION_TO_IP; 253 break; 254 case 0x200: 255 regNum = MISCREG_MTRR_PHYS_BASE_0; 256 break; 257 case 0x201: 258 regNum = MISCREG_MTRR_PHYS_MASK_0; 259 break; 260 case 0x202: 261 regNum = MISCREG_MTRR_PHYS_BASE_1; 262 break; 263 case 0x203: 264 regNum = MISCREG_MTRR_PHYS_MASK_1; 265 break; 266 case 0x204: 267 regNum = MISCREG_MTRR_PHYS_BASE_2; 268 break; 269 case 0x205: 270 regNum = MISCREG_MTRR_PHYS_MASK_2; 271 break; 272 case 0x206: 273 regNum = MISCREG_MTRR_PHYS_BASE_3; 274 break; 275 case 0x207: 276 regNum = MISCREG_MTRR_PHYS_MASK_3; 277 break; 278 case 0x208: 279 regNum = MISCREG_MTRR_PHYS_BASE_4; 280 break; 281 case 0x209: 282 regNum = MISCREG_MTRR_PHYS_MASK_4; 283 break; 284 case 0x20A: 285 regNum = MISCREG_MTRR_PHYS_BASE_5; 286 break; 287 case 0x20B: 288 regNum = MISCREG_MTRR_PHYS_MASK_5; 289 break; 290 case 0x20C: 291 regNum = MISCREG_MTRR_PHYS_BASE_6; 292 break; 293 case 0x20D: 294 regNum = MISCREG_MTRR_PHYS_MASK_6; 295 break; 296 case 0x20E: 297 regNum = MISCREG_MTRR_PHYS_BASE_7; 298 break; 299 case 0x20F: 300 regNum = MISCREG_MTRR_PHYS_MASK_7; 301 break; 302 case 0x250: 303 regNum = MISCREG_MTRR_FIX_64K_00000; 304 break; 305 case 0x258: 306 regNum = MISCREG_MTRR_FIX_16K_80000; 307 break; 308 case 0x259: 309 regNum = MISCREG_MTRR_FIX_16K_A0000; 310 break; 311 case 0x268: 312 regNum = MISCREG_MTRR_FIX_4K_C0000; 313 break; 314 case 0x269: 315 regNum = MISCREG_MTRR_FIX_4K_C8000; 316 break; 317 case 0x26A: 318 regNum = MISCREG_MTRR_FIX_4K_D0000; 319 break; 320 case 0x26B: 321 regNum = MISCREG_MTRR_FIX_4K_D8000; 322 break; 323 case 0x26C: 324 regNum = MISCREG_MTRR_FIX_4K_E0000; 325 break; 326 case 0x26D: 327 regNum = MISCREG_MTRR_FIX_4K_E8000; 328 break; 329 case 0x26E: 330 regNum = MISCREG_MTRR_FIX_4K_F0000; 331 break; 332 case 0x26F: 333 regNum = MISCREG_MTRR_FIX_4K_F8000; 334 break; 335 case 0x277: 336 regNum = MISCREG_PAT; 337 break; 338 case 0x2FF: 339 regNum = MISCREG_DEF_TYPE; 340 break; 341 case 0x400: 342 regNum = MISCREG_MC0_CTL; 343 break; 344 case 0x404: 345 regNum = MISCREG_MC1_CTL; 346 break; 347 case 0x408: 348 regNum = MISCREG_MC2_CTL; 349 break; 350 case 0x40C: 351 regNum = MISCREG_MC3_CTL; 352 break; 353 case 0x410: 354 regNum = MISCREG_MC4_CTL; 355 break; 356 case 0x414: 357 regNum = MISCREG_MC5_CTL; 358 break; 359 case 0x418: 360 regNum = MISCREG_MC6_CTL; 361 break; 362 case 0x41C: 363 regNum = MISCREG_MC7_CTL; 364 break; 365 case 0x401: 366 regNum = MISCREG_MC0_STATUS; 367 break; 368 case 0x405: 369 regNum = MISCREG_MC1_STATUS; 370 break; 371 case 0x409: 372 regNum = MISCREG_MC2_STATUS; 373 break; 374 case 0x40D: 375 regNum = MISCREG_MC3_STATUS; 376 break; 377 case 0x411: 378 regNum = MISCREG_MC4_STATUS; 379 break; 380 case 0x415: 381 regNum = MISCREG_MC5_STATUS; 382 break; 383 case 0x419: 384 regNum = MISCREG_MC6_STATUS; 385 break; 386 case 0x41D: 387 regNum = MISCREG_MC7_STATUS; 388 break; 389 case 0x402: 390 regNum = MISCREG_MC0_ADDR; 391 break; 392 case 0x406: 393 regNum = MISCREG_MC1_ADDR; 394 break; 395 case 0x40A: 396 regNum = MISCREG_MC2_ADDR; 397 break; 398 case 0x40E: 399 regNum = MISCREG_MC3_ADDR; 400 break; 401 case 0x412: 402 regNum = MISCREG_MC4_ADDR; 403 break; 404 case 0x416: 405 regNum = MISCREG_MC5_ADDR; 406 break; 407 case 0x41A: 408 regNum = MISCREG_MC6_ADDR; 409 break; 410 case 0x41E: 411 regNum = MISCREG_MC7_ADDR; 412 break; 413 case 0x403: 414 regNum = MISCREG_MC0_MISC; 415 break; 416 case 0x407: 417 regNum = MISCREG_MC1_MISC; 418 break; 419 case 0x40B: 420 regNum = MISCREG_MC2_MISC; 421 break; 422 case 0x40F: 423 regNum = MISCREG_MC3_MISC; 424 break; 425 case 0x413: 426 regNum = MISCREG_MC4_MISC; 427 break; 428 case 0x417: 429 regNum = MISCREG_MC5_MISC; 430 break; 431 case 0x41B: 432 regNum = MISCREG_MC6_MISC; 433 break; 434 case 0x41F: 435 regNum = MISCREG_MC7_MISC; 436 break; 437 case 0xC0000080: 438 regNum = MISCREG_EFER; 439 break; 440 case 0xC0000081: 441 regNum = MISCREG_STAR; 442 break; 443 case 0xC0000082: 444 regNum = MISCREG_LSTAR; 445 break; 446 case 0xC0000083: 447 regNum = MISCREG_CSTAR; 448 break; 449 case 0xC0000084: 450 regNum = MISCREG_SF_MASK; 451 break; 452 case 0xC0000100: 453 regNum = MISCREG_FS_BASE; 454 break; 455 case 0xC0000101: 456 regNum = MISCREG_GS_BASE; 457 break; 458 case 0xC0000102: 459 regNum = MISCREG_KERNEL_GS_BASE; 460 break; 461 case 0xC0000103: 462 regNum = MISCREG_TSC_AUX; 463 break; 464 case 0xC0010000: 465 regNum = MISCREG_PERF_EVT_SEL0; 466 break; 467 case 0xC0010001: 468 regNum = MISCREG_PERF_EVT_SEL1; 469 break; 470 case 0xC0010002: 471 regNum = MISCREG_PERF_EVT_SEL2; 472 break; 473 case 0xC0010003: 474 regNum = MISCREG_PERF_EVT_SEL3; 475 break; 476 case 0xC0010004: 477 regNum = MISCREG_PERF_EVT_CTR0; 478 break; 479 case 0xC0010005: 480 regNum = MISCREG_PERF_EVT_CTR1; 481 break; 482 case 0xC0010006: 483 regNum = MISCREG_PERF_EVT_CTR2; 484 break; 485 case 0xC0010007: 486 regNum = MISCREG_PERF_EVT_CTR3; 487 break; 488 case 0xC0010010: 489 regNum = MISCREG_SYSCFG; 490 break; 491 case 0xC0010016: 492 regNum = MISCREG_IORR_BASE0; 493 break; 494 case 0xC0010017: 495 regNum = MISCREG_IORR_BASE1; 496 break; 497 case 0xC0010018: 498 regNum = MISCREG_IORR_MASK0; 499 break; 500 case 0xC0010019: 501 regNum = MISCREG_IORR_MASK1; 502 break; 503 case 0xC001001A: 504 regNum = MISCREG_TOP_MEM; 505 break; 506 case 0xC001001D: 507 regNum = MISCREG_TOP_MEM2; 508 break; 509 case 0xC0010114: 510 regNum = MISCREG_VM_CR; 511 break; 512 case 0xC0010115: 513 regNum = MISCREG_IGNNE; 514 break; 515 case 0xC0010116: 516 regNum = MISCREG_SMM_CTL; 517 break; 518 case 0xC0010117: 519 regNum = MISCREG_VM_HSAVE_PA; 520 break; 521 default: 522 return new GeneralProtection(0); | 528 req->setPaddr(MISCREG_PCI_CONFIG_ADDRESS * sizeof(MiscReg)); 529 } else if ((IOPort & ~mask(2)) == 0xCFC) { 530 Addr configAddress = 531 tc->readMiscRegNoEffect(MISCREG_PCI_CONFIG_ADDRESS); 532 if (bits(configAddress, 31, 31)) { 533 req->setPaddr(PhysAddrPrefixPciConfig | 534 mbits(configAddress, 30, 2) | 535 (IOPort & mask(2))); |
523 } | 536 } |
524 //The index is multiplied by the size of a MiscReg so that 525 //any memory dependence calculations will not see these as 526 //overlapping. 527 req->setPaddr(regNum * sizeof(MiscReg)); 528 return NoFault; 529 } else if (prefix == IntAddrPrefixIO) { 530 // TODO If CPL > IOPL or in virtual mode, check the I/O permission 531 // bitmap in the TSS. 532 533 Addr IOPort = vaddr & ~IntAddrPrefixMask; 534 // Make sure the address fits in the expected 16 bit IO address 535 // space. 536 assert(!(IOPort & ~0xFFFF)); 537 if (IOPort == 0xCF8 && req->getSize() == 4) { 538 req->setMmapedIpr(true); 539 req->setPaddr(MISCREG_PCI_CONFIG_ADDRESS * sizeof(MiscReg)); 540 } else if ((IOPort & ~mask(2)) == 0xCFC) { 541 Addr configAddress = 542 tc->readMiscRegNoEffect(MISCREG_PCI_CONFIG_ADDRESS); 543 if (bits(configAddress, 31, 31)) { 544 req->setPaddr(PhysAddrPrefixPciConfig | 545 mbits(configAddress, 30, 2) | 546 (IOPort & mask(2))); 547 } 548 } else { 549 req->setPaddr(PhysAddrPrefixIO | IOPort); 550 } 551 return NoFault; | |
552 } else { | 537 } else { |
553 panic("Access to unrecognized internal address space %#x.\n", 554 prefix); | 538 req->setPaddr(PhysAddrPrefixIO | IOPort); |
555 } | 539 } |
540 return NoFault; 541 } else { 542 panic("Access to unrecognized internal address space %#x.\n", 543 prefix); |
|
556 } | 544 } |
545} |
|
557 | 546 |
558 // Get cr0. This will tell us how to do translation. We'll assume it was 559 // verified to be correct and consistent when set. 560 CR0 cr0 = tc->readMiscRegNoEffect(MISCREG_CR0); | 547Fault 548TLB::translate(RequestPtr req, ThreadContext *tc, Translation *translation, 549 Mode mode, bool &delayedResponse, bool timing) 550{ 551 uint32_t flags = req->getFlags(); 552 int seg = flags & SegmentFlagMask; 553 bool storeCheck = flags & (StoreCheck << FlagShift); |
561 | 554 |
555 // If this is true, we're dealing with a request to a non-memory address 556 // space. 557 if (seg == SEGMENT_REG_MS) { 558 return translateInt(req, tc); 559 } 560 561 delayedResponse = false; 562 Addr vaddr = req->getVaddr(); 563 DPRINTF(TLB, "Translating vaddr %#x.\n", vaddr); 564 565 HandyM5Reg m5Reg = tc->readMiscRegNoEffect(MISCREG_M5_REG); 566 |
|
562 // If protected mode has been enabled... | 567 // If protected mode has been enabled... |
563 if (cr0.pe) { | 568 if (m5Reg.prot) { |
564 DPRINTF(TLB, "In protected mode.\n"); | 569 DPRINTF(TLB, "In protected mode.\n"); |
565 Efer efer = tc->readMiscRegNoEffect(MISCREG_EFER); 566 SegAttr csAttr = tc->readMiscRegNoEffect(MISCREG_CS_ATTR); | |
567 // If we're not in 64-bit mode, do protection/limit checks | 570 // If we're not in 64-bit mode, do protection/limit checks |
568 if (!efer.lma || !csAttr.longMode) { | 571 if (m5Reg.mode != LongMode) { |
569 DPRINTF(TLB, "Not in long mode. Checking segment protection.\n"); 570 // Check for a NULL segment selector. 571 if (!(seg == SEGMENT_REG_TSG || seg == SYS_SEGMENT_REG_IDTR || | 572 DPRINTF(TLB, "Not in long mode. Checking segment protection.\n"); 573 // Check for a NULL segment selector. 574 if (!(seg == SEGMENT_REG_TSG || seg == SYS_SEGMENT_REG_IDTR || |
572 seg == SEGMENT_REG_HS || seg == SEGMENT_REG_LS || 573 seg == SEGMENT_REG_MS) | 575 seg == SEGMENT_REG_HS || seg == SEGMENT_REG_LS) |
574 && !tc->readMiscRegNoEffect(MISCREG_SEG_SEL(seg))) 575 return new GeneralProtection(0); 576 bool expandDown = false; 577 SegAttr attr = tc->readMiscRegNoEffect(MISCREG_SEG_ATTR(seg)); 578 if (seg >= SEGMENT_REG_ES && seg <= SEGMENT_REG_HS) { 579 if (!attr.writable && (mode == Write || storeCheck)) 580 return new GeneralProtection(0); 581 if (!attr.readable && mode == Read) 582 return new GeneralProtection(0); 583 expandDown = attr.expandDown; 584 585 } 586 Addr base = tc->readMiscRegNoEffect(MISCREG_SEG_BASE(seg)); 587 Addr limit = tc->readMiscRegNoEffect(MISCREG_SEG_LIMIT(seg)); 588 // This assumes we're not in 64 bit mode. If we were, the default 589 // address size is 64 bits, overridable to 32. 590 int size = 32; 591 bool sizeOverride = (flags & (AddrSizeFlagBit << FlagShift)); | 576 && !tc->readMiscRegNoEffect(MISCREG_SEG_SEL(seg))) 577 return new GeneralProtection(0); 578 bool expandDown = false; 579 SegAttr attr = tc->readMiscRegNoEffect(MISCREG_SEG_ATTR(seg)); 580 if (seg >= SEGMENT_REG_ES && seg <= SEGMENT_REG_HS) { 581 if (!attr.writable && (mode == Write || storeCheck)) 582 return new GeneralProtection(0); 583 if (!attr.readable && mode == Read) 584 return new GeneralProtection(0); 585 expandDown = attr.expandDown; 586 587 } 588 Addr base = tc->readMiscRegNoEffect(MISCREG_SEG_BASE(seg)); 589 Addr limit = tc->readMiscRegNoEffect(MISCREG_SEG_LIMIT(seg)); 590 // This assumes we're not in 64 bit mode. If we were, the default 591 // address size is 64 bits, overridable to 32. 592 int size = 32; 593 bool sizeOverride = (flags & (AddrSizeFlagBit << FlagShift)); |
594 SegAttr csAttr = tc->readMiscRegNoEffect(MISCREG_CS_ATTR); |
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592 if ((csAttr.defaultSize && sizeOverride) || 593 (!csAttr.defaultSize && !sizeOverride)) 594 size = 16; 595 Addr offset = bits(vaddr - base, size-1, 0); 596 Addr endOffset = offset + req->getSize() - 1; 597 if (expandDown) { 598 DPRINTF(TLB, "Checking an expand down segment.\n"); 599 warn_once("Expand down segments are untested.\n"); 600 if (offset <= limit || endOffset <= limit) 601 return new GeneralProtection(0); 602 } else { 603 if (offset > limit || endOffset > limit) 604 return new GeneralProtection(0); 605 } 606 } 607 // If paging is enabled, do the translation. | 595 if ((csAttr.defaultSize && sizeOverride) || 596 (!csAttr.defaultSize && !sizeOverride)) 597 size = 16; 598 Addr offset = bits(vaddr - base, size-1, 0); 599 Addr endOffset = offset + req->getSize() - 1; 600 if (expandDown) { 601 DPRINTF(TLB, "Checking an expand down segment.\n"); 602 warn_once("Expand down segments are untested.\n"); 603 if (offset <= limit || endOffset <= limit) 604 return new GeneralProtection(0); 605 } else { 606 if (offset > limit || endOffset > limit) 607 return new GeneralProtection(0); 608 } 609 } 610 // If paging is enabled, do the translation. |
608 if (cr0.pg) { | 611 if (m5Reg.paging) { |
609 DPRINTF(TLB, "Paging enabled.\n"); 610 // The vaddr already has the segment base applied. 611 TlbEntry *entry = lookup(vaddr); 612 if (!entry) { 613#if FULL_SYSTEM 614 Fault fault = walker->start(tc, translation, req, mode); 615 if (timing || fault != NoFault) { 616 // This gets ignored in atomic mode. --- 21 unchanged lines hidden (view full) --- 638 DPRINTF(TLB, "Mapping %#x to %#x\n", alignedVaddr, 639 newEntry.pageStart()); 640 entry = insert(alignedVaddr, newEntry); 641 } 642 DPRINTF(TLB, "Miss was serviced.\n"); 643#endif 644 } 645 // Do paging protection checks. | 612 DPRINTF(TLB, "Paging enabled.\n"); 613 // The vaddr already has the segment base applied. 614 TlbEntry *entry = lookup(vaddr); 615 if (!entry) { 616#if FULL_SYSTEM 617 Fault fault = walker->start(tc, translation, req, mode); 618 if (timing || fault != NoFault) { 619 // This gets ignored in atomic mode. --- 21 unchanged lines hidden (view full) --- 641 DPRINTF(TLB, "Mapping %#x to %#x\n", alignedVaddr, 642 newEntry.pageStart()); 643 entry = insert(alignedVaddr, newEntry); 644 } 645 DPRINTF(TLB, "Miss was serviced.\n"); 646#endif 647 } 648 // Do paging protection checks. |
646 bool inUser = (csAttr.dpl == 3 && | 649 bool inUser = (m5Reg.cpl == 3 && |
647 !(flags & (CPL0FlagBit << FlagShift))); 648 if ((inUser && !entry->user) || 649 (mode == Write && !entry->writable)) { 650 // The page must have been present to get into the TLB in 651 // the first place. We'll assume the reserved bits are 652 // fine even though we're not checking them. 653 return new PageFault(vaddr, true, mode, inUser, false); 654 } --- 101 unchanged lines hidden --- | 650 !(flags & (CPL0FlagBit << FlagShift))); 651 if ((inUser && !entry->user) || 652 (mode == Write && !entry->writable)) { 653 // The page must have been present to get into the TLB in 654 // the first place. We'll assume the reserved bits are 655 // fine even though we're not checking them. 656 return new PageFault(vaddr, true, mode, inUser, false); 657 } --- 101 unchanged lines hidden --- |