arch/x86/pagetable_walker.cc

286     PageTableEntry pte;
288         pte = read->getLE<uint64_t>();
290         pte = read->getLE<uint32_t>();
292     bool uncacheable = pte.pcd;
297     bool badNX = pte.nx && mode == BaseTLB::Execute && enableNX;
301                 "Got long mode PML4 entry %#016x.\n", (uint64_t)pte);
302         nextRead = ((uint64_t)pte & (mask(40) << 12)) + vaddr.longl3 * dataSize;
303         doWrite = !pte.a;
304         pte.a = 1;
305         entry.writable = pte.w;
306         entry.user = pte.u;
307         if (badNX || !pte.p) {
309             fault = pageFault(pte.p);
312         entry.noExec = pte.nx;
317                 "Got long mode PDP entry %#016x.\n", (uint64_t)pte);
318         nextRead = ((uint64_t)pte & (mask(40) << 12)) + vaddr.longl2 * dataSize;
319         doWrite = !pte.a;
320         pte.a = 1;
321         entry.writable = entry.writable && pte.w;
322         entry.user = entry.user && pte.u;
323         if (badNX || !pte.p) {
325             fault = pageFault(pte.p);
332                 "Got long mode PD entry %#016x.\n", (uint64_t)pte);
333         doWrite = !pte.a;
334         pte.a = 1;
335         entry.writable = entry.writable && pte.w;
336         entry.user = entry.user && pte.u;
337         if (badNX || !pte.p) {
339             fault = pageFault(pte.p);
342         if (!pte.ps) {
346                 ((uint64_t)pte & (mask(40) << 12)) + vaddr.longl1 * dataSize;
352             entry.paddr = (uint64_t)pte & (mask(31) << 21);
354             entry.global = pte.g;
355             entry.patBit = bits(pte, 12);
363                 "Got long mode PTE entry %#016x.\n", (uint64_t)pte);
364         doWrite = !pte.a;
365         pte.a = 1;
366         entry.writable = entry.writable && pte.w;
367         entry.user = entry.user && pte.u;
368         if (badNX || !pte.p) {
370             fault = pageFault(pte.p);
373         entry.paddr = (uint64_t)pte & (mask(40) << 12);
375         entry.global = pte.g;
376         entry.patBit = bits(pte, 12);
383                 "Got legacy mode PAE PDP entry %#08x.\n", (uint32_t)pte);
384         nextRead = ((uint64_t)pte & (mask(40) << 12)) + vaddr.pael2 * dataSize;
385         if (!pte.p) {
387             fault = pageFault(pte.p);
394                 "Got legacy mode PAE PD entry %#08x.\n", (uint32_t)pte);
395         doWrite = !pte.a;
396         pte.a = 1;
397         entry.writable = pte.w;
398         entry.user = pte.u;
399         if (badNX || !pte.p) {
401             fault = pageFault(pte.p);
404         if (!pte.ps) {
407             nextRead = ((uint64_t)pte & (mask(40) << 12)) + vaddr.pael1 * dataSize;
413             entry.paddr = (uint64_t)pte & (mask(31) << 21);
415             entry.global = pte.g;
416             entry.patBit = bits(pte, 12);
424                 "Got legacy mode PAE PTE entry %#08x.\n", (uint32_t)pte);
425         doWrite = !pte.a;
426         pte.a = 1;
427         entry.writable = entry.writable && pte.w;
428         entry.user = entry.user && pte.u;
429         if (badNX || !pte.p) {
431             fault = pageFault(pte.p);
434         entry.paddr = (uint64_t)pte & (mask(40) << 12);
436         entry.global = pte.g;
437         entry.patBit = bits(pte, 7);
444                 "Got legacy mode PSE PD entry %#08x.\n", (uint32_t)pte);
445         doWrite = !pte.a;
446         pte.a = 1;
447         entry.writable = pte.w;
448         entry.user = pte.u;
449         if (!pte.p) {
451             fault = pageFault(pte.p);
454         if (!pte.ps) {
458                 ((uint64_t)pte & (mask(20) << 12)) + vaddr.norml2 * dataSize;
464             entry.paddr = bits(pte, 20, 13) << 32 | bits(pte, 31, 22) << 22;
466             entry.global = pte.g;
467             entry.patBit = bits(pte, 12);
475                 "Got legacy mode PD entry %#08x.\n", (uint32_t)pte);
476         doWrite = !pte.a;
477         pte.a = 1;
478         entry.writable = pte.w;
479         entry.user = pte.u;
480         if (!pte.p) {
482             fault = pageFault(pte.p);
487         nextRead = ((uint64_t)pte & (mask(20) << 12)) + vaddr.norml2 * dataSize;
492                 "Got legacy mode PTE entry %#08x.\n", (uint32_t)pte);
493         doWrite = !pte.a;
494         pte.a = 1;
495         entry.writable = pte.w;
496         entry.user = pte.u;
497         if (!pte.p) {
499             fault = pageFault(pte.p);
502         entry.paddr = (uint64_t)pte & (mask(20) << 12);
504         entry.global = pte.g;
505         entry.patBit = bits(pte, 7);
531             write->setLE<uint64_t>(pte);