-
-
+#define USE_VMM_PAGING_DEBUG
+// All of the debug functions defined in vmm_paging.h are implemented in this file
+#include "vmm_paging_debug.h"
+#undef USE_VMM_PAGING_DEBUG
-void delete_page_tables_pde32(pde32_t * pde) {
- int i;//, j;
+void delete_page_tables_32(pde32_t * pde) {
+ int i;
if (pde == NULL) {
return;
PrintDebug("PTE base addr %x \n", pde[i].pt_base_addr);
pte32_t * pte = (pte32_t *)((addr_t)(uint_t)(pde[i].pt_base_addr << PAGE_POWER));
- /*
- for (j = 0; (j < MAX_PTE32_ENTRIES); j++) {
- if ((pte[j].present)) {
- os_hooks->free_page((void *)(pte[j].page_base_addr << PAGE_POWER));
- }
- }
- */
PrintDebug("Deleting PTE %d (%p)\n", i, pte);
V3_FreePage(pte);
}
V3_FreePage(V3_PAddr(pde));
}
+void delete_page_tables_32PAE(pdpe32pae_t * pdpe) {
+ PrintError("Unimplemented function\n");
+}
+
+void delete_page_tables_64(pml4e64_t * pml4) {
+ PrintError("Unimplemented function\n");
+}
+
+
+int translate_guest_pt_32(struct guest_info * info, addr_t guest_cr3, addr_t vaddr, addr_t * paddr) {
+ addr_t guest_pde_pa = CR3_TO_PDE32_PA((void *)guest_cr3);
+ pde32_t * guest_pde = 0;
+ addr_t guest_pte_pa = 0;
+
+ if (guest_pa_to_host_va(info, guest_pde_pa, (addr_t*)&guest_pde) == -1) {
+ PrintError("Could not get virtual address of Guest PDE32 (PA=%p)\n",
+ (void *)guest_pde_pa);
+ return -1;
+ }
+
+ switch (pde32_lookup(guest_pde, vaddr, &guest_pte_pa)) {
+ case PDE32_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PDE32_ENTRY_LARGE_PAGE:
+ *paddr = guest_pte_pa;
+ return 0;
+ case PDE32_ENTRY_PTE32:
+ {
+ pte32_t * guest_pte;
+ if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t*)&guest_pte) == -1) {
+ PrintError("Could not get virtual address of Guest PTE32 (PA=%p)\n",
+ (void *)guest_pte_pa);
+ return -1;
+ }
+
+ if (pte32_lookup(guest_pte, vaddr, paddr) == -1) {
+ return -1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+int translate_host_pt_32(addr_t host_cr3, addr_t vaddr, addr_t * paddr) {
+ pde32_t * host_pde = (pde32_t *)CR3_TO_PDE32_VA((void *)host_cr3);
+ pte32_t * host_pte = 0;
+
+ switch (pde32_lookup(host_pde, vaddr, (addr_t *)&host_pte)) {
+ case PDE32_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PDE32_ENTRY_LARGE_PAGE:
+ *paddr = (addr_t)host_pte;
+ return 0;
+ case PDE32_ENTRY_PTE32:
+ if (pte32_lookup(host_pte, vaddr, paddr) == -1) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+int translate_host_pt_32pae(addr_t host_cr3, addr_t vaddr, addr_t * paddr) {
+ pde32_t * host_pde = (pde32_t *)CR3_TO_PDE32_VA((void *)host_cr3);
+ pte32_t * host_pte = 0;
+
+ switch (pde32_lookup(host_pde, vaddr, (addr_t *)&host_pte)) {
+ case PDE32_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PDE32_ENTRY_LARGE_PAGE:
+ *paddr = (addr_t)host_pte;
+ return 0;
+ case PDE32_ENTRY_PTE32:
+ if (pte32_lookup(host_pte, vaddr, paddr) == -1) {
+ return -1;
+ }
+ }
+
+ return -1;
+}
+
+
+int translate_host_pt_64(addr_t host_cr3, addr_t vaddr, addr_t * paddr) {
+ pde32_t * host_pde = (pde32_t *)CR3_TO_PDE32_VA((void *)host_cr3);
+ pte32_t * host_pte = 0;
+
+ switch (pde32_lookup(host_pde, vaddr, (addr_t *)&host_pte)) {
+ case PDE32_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PDE32_ENTRY_LARGE_PAGE:
+ *paddr = (addr_t)host_pte;
+ return 0;
+ case PDE32_ENTRY_PTE32:
+ if (pte32_lookup(host_pte, vaddr, paddr) == -1) {
+ return -1;
+ }
+ }
+
+ return -1;
+}
+
+
* The entry addresses could be pointing to either guest physical memory or host physical memory
* Instead we just return the entry address, and a flag to show if it points to a pte or a large page...
*/
+/* The value of entry is a return type:
+ * Page not present: *entry = 0
+ * Large Page: *entry = translated physical address (byte granularity)
+ * PTE entry: *entry is the address of the PTE Page
+ */
pde32_entry_type_t pde32_lookup(pde32_t * pd, addr_t addr, addr_t * entry) {
pde32_t * pde_entry = &(pd[PDE32_INDEX(addr)]);
if (pde_entry->large_page) {
pde32_4MB_t * large_pde = (pde32_4MB_t *)pde_entry;
- *entry = PDE32_4MB_T_ADDR(*large_pde);
- *entry += PD32_4MB_PAGE_OFFSET(addr);
+ *entry = BASE_TO_PAGE_ADDR_4MB(large_pde->page_base_addr);
+ *entry += PAGE_OFFSET_4MB(addr);
return PDE32_ENTRY_LARGE_PAGE;
} else {
- *entry = PDE32_T_ADDR(*pde_entry);
+ *entry = BASE_TO_PAGE_ADDR(pde_entry->pt_base_addr);
return PDE32_ENTRY_PTE32;
}
}
if (!pte_entry->present) {
*entry = 0;
- PrintDebug("Lookup at non present page (index=%d)\n", PTE32_INDEX(addr));
+ // PrintDebug("Lookup at non present page (index=%d)\n", PTE32_INDEX(addr));
+ return -1;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pte_entry->page_base_addr) + PAGE_OFFSET(addr);
+ return 0;
+ }
+
+ return -1;
+}
+
+
+int pdpe32pae_lookup(pdpe32pae_t * pdp, addr_t addr, addr_t * entry) {
+ pdpe32pae_t * pdpe_entry = &(pdp[PDPE32PAE_INDEX(addr)]);
+
+ if (!pdpe_entry->present) {
+ *entry = 0;
return -1;
} else {
- *entry = PTE32_T_ADDR(*pte_entry) + PT32_PAGE_OFFSET(addr);
+ *entry = BASE_TO_PAGE_ADDR(pdpe_entry->pd_base_addr) + PAGE_OFFSET(addr);
return 0;
}
pde[i].large_page = 0;
pde[i].global_page = 0;
pde[i].vmm_info = 0;
- pde[i].pt_base_addr = PAGE_ALIGNED_ADDR((addr_t)V3_PAddr(pte));
+ pde[i].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
}
}
* pulling pages from the mem_list when necessary
* If there are any gaps in the layout, we add them as unmapped pages
*/
-pdpe32pae_t * create_passthrough_pts_PAE32(struct guest_info * guest_info) {
+pdpe32pae_t * create_passthrough_pts_32PAE(struct guest_info * guest_info) {
addr_t current_page_addr = 0;
int i, j, k;
struct shadow_map * map = &(guest_info->mem_map);
pde[j].large_page = 0;
pde[j].global_page = 0;
pde[j].vmm_info = 0;
- pde[j].pt_base_addr = PAGE_ALIGNED_ADDR((addr_t)V3_PAddr(pte));
+ pde[j].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
pde[j].rsvd = 0;
pde_present = 1;
pdpe[i].avail = 0;
pdpe[i].rsvd2 = 0;
pdpe[i].vmm_info = 0;
- pdpe[i].pd_base_addr = PAGE_ALIGNED_ADDR((addr_t)V3_PAddr(pde));
+ pdpe[i].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde));
pdpe[i].rsvd3 = 0;
}
int pdpe_present = 0;
pdpe64_t * pdpe = V3_VAddr(V3_AllocPages(1));
- for (j = 0; j < 1; j++) {
+ for (j = 0; j < 20; j++) {
int pde_present = 0;
pde64_t * pde = V3_VAddr(V3_AllocPages(1));
return NULL;
}
- pte[m].page_base_addr = PTE64_BASE_ADDR(host_addr);
+ pte[m].page_base_addr = PAGE_BASE_ADDR(host_addr);
//PrintPTE64(current_page_addr, &(pte[m]));
pde[k].large_page = 0;
//pde[k].global_page = 0;
pde[k].vmm_info = 0;
- pde[k].pt_base_addr = PAGE_ALIGNED_ADDR((addr_t)V3_PAddr(pte));
+ pde[k].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
pde_present = 1;
}
pdpe[j].large_page = 0;
//pdpe[j].global_page = 0;
pdpe[j].vmm_info = 0;
- pdpe[j].pd_base_addr = PAGE_ALIGNED_ADDR((addr_t)V3_PAddr(pde));
+ pdpe[j].pd_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pde));
pdpe_present = 1;
//pml[i].large_page = 0;
//pml[i].global_page = 0;
pml[i].vmm_info = 0;
- pml[i].pdp_base_addr = PAGE_ALIGNED_ADDR((addr_t)V3_PAddr(pdpe));
+ pml[i].pdp_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pdpe));
}
}
-
-void PrintPDE32(addr_t virtual_address, pde32_t * pde)
-{
- PrintDebug("PDE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, reserved=%x, largePages=%x, globalPage=%x, kernelInfo=%x\n",
- (void *)virtual_address,
- (void *)(addr_t) (pde->pt_base_addr << PAGE_POWER),
- pde->present,
- pde->writable,
- pde->user_page,
- pde->write_through,
- pde->cache_disable,
- pde->accessed,
- pde->reserved,
- pde->large_page,
- pde->global_page,
- pde->vmm_info);
-}
-
-
-void PrintPTE32(addr_t virtual_address, pte32_t * pte)
-{
- PrintDebug("PTE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, dirty=%x, pteAttribute=%x, globalPage=%x, vmm_info=%x\n",
- (void *)virtual_address,
- (void*)(addr_t)(pte->page_base_addr << PAGE_POWER),
- pte->present,
- pte->writable,
- pte->user_page,
- pte->write_through,
- pte->cache_disable,
- pte->accessed,
- pte->dirty,
- pte->pte_attr,
- pte->global_page,
- pte->vmm_info);
-}
-
-
-
-
-
-
-void PrintPDE64(addr_t virtual_address, pde64_t * pde)
-{
- PrintDebug("PDE64 %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, reserved=%x, largePages=%x, globalPage=%x, kernelInfo=%x\n",
- (void *)virtual_address,
- (void *)(addr_t) (pde->pt_base_addr << PAGE_POWER),
- pde->present,
- pde->writable,
- pde->user_page,
- pde->write_through,
- pde->cache_disable,
- pde->accessed,
- pde->reserved,
- pde->large_page,
- 0,//pde->global_page,
- pde->vmm_info);
-}
-
-
-void PrintPTE64(addr_t virtual_address, pte64_t * pte)
-{
- PrintDebug("PTE64 %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, dirty=%x, pteAttribute=%x, globalPage=%x, vmm_info=%x\n",
- (void *)virtual_address,
- (void*)(addr_t)(pte->page_base_addr << PAGE_POWER),
- pte->present,
- pte->writable,
- pte->user_page,
- pte->write_through,
- pte->cache_disable,
- pte->accessed,
- pte->dirty,
- pte->pte_attr,
- pte->global_page,
- pte->vmm_info);
-}
-
-
-
-
-
-
-void PrintPD32(pde32_t * pde)
-{
- int i;
-
- PrintDebug("Page Directory at %p:\n", pde);
- for (i = 0; (i < MAX_PDE32_ENTRIES); i++) {
- if ( pde[i].present) {
- PrintPDE32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), &(pde[i]));
- }
- }
-}
-
-void PrintPT32(addr_t starting_address, pte32_t * pte)
-{
- int i;
-
- PrintDebug("Page Table at %p:\n", pte);
- for (i = 0; (i < MAX_PTE32_ENTRIES) ; i++) {
- if (pte[i].present) {
- PrintPTE32(starting_address + (PAGE_SIZE * i), &(pte[i]));
- }
- }
-}
-
-
-
-
-
-
-
-void PrintDebugPageTables(pde32_t * pde)
-{
- int i;
-
- PrintDebug("Dumping the pages starting with the pde page at %p\n", pde);
-
- for (i = 0; (i < MAX_PDE32_ENTRIES); i++) {
- if (pde[i].present) {
- PrintPDE32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), &(pde[i]));
- PrintPT32((addr_t)(PAGE_SIZE * MAX_PTE32_ENTRIES * i), (pte32_t *)V3_VAddr((void *)(addr_t)(pde[i].pt_base_addr << PAGE_POWER)));
- }
- }
-}
-
-
-
-
-
-
-
-
-void PrintPDPE32PAE(addr_t virtual_address, pdpe32pae_t * pdpe)
-{
- PrintDebug("PDPE %p -> %p : present=%x, wt=%x, cd=%x, accessed=%x, kernelInfo=%x\n",
- (void *)virtual_address,
- (void *)(addr_t) (pdpe->pd_base_addr << PAGE_POWER),
- pdpe->present,
- pdpe->write_through,
- pdpe->cache_disable,
- pdpe->accessed,
- pdpe->vmm_info);
-}
-
-void PrintPDE32PAE(addr_t virtual_address, pde32pae_t * pde)
-{
- PrintDebug("PDE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, largePages=%x, globalPage=%x, kernelInfo=%x\n",
- (void *)virtual_address,
- (void *)(addr_t) (pde->pt_base_addr << PAGE_POWER),
- pde->present,
- pde->writable,
- pde->user_page,
- pde->write_through,
- pde->cache_disable,
- pde->accessed,
- pde->large_page,
- pde->global_page,
- pde->vmm_info);
-}
-
-
-void PrintPTE32PAE(addr_t virtual_address, pte32pae_t * pte)
-{
- PrintDebug("PTE %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, dirty=%x, pteAttribute=%x, globalPage=%x, vmm_info=%x\n",
- (void *)virtual_address,
- (void*)(addr_t)(pte->page_base_addr << PAGE_POWER),
- pte->present,
- pte->writable,
- pte->user_page,
- pte->write_through,
- pte->cache_disable,
- pte->accessed,
- pte->dirty,
- pte->pte_attr,
- pte->global_page,
- pte->vmm_info);
-}
-
-
-
-
-
-
-void PrintDebugPageTables32PAE(pdpe32pae_t * pdpe)
-{
- int i, j, k;
- pde32pae_t * pde;
- pte32pae_t * pte;
- addr_t virtual_addr = 0;
-
- PrintDebug("Dumping the pages starting with the pde page at %p\n", pdpe);
-
- for (i = 0; (i < MAX_PDPE32PAE_ENTRIES); i++) {
-
- if (pdpe[i].present) {
- pde = (pde32pae_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(pdpe[i].pd_base_addr));
-
- PrintPDPE32PAE(virtual_addr, &(pdpe[i]));
-
- for (j = 0; j < MAX_PDE32PAE_ENTRIES; j++) {
-
- if (pde[j].present) {
- pte = (pte32pae_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(pde[j].pt_base_addr));
-
- PrintPDE32PAE(virtual_addr, &(pde[j]));
-
- for (k = 0; k < MAX_PTE32PAE_ENTRIES; k++) {
- if (pte[k].present) {
- PrintPTE32PAE(virtual_addr, &(pte[k]));
- }
-
- virtual_addr += PAGE_SIZE;
- }
- } else {
- virtual_addr += PAGE_SIZE * MAX_PTE32PAE_ENTRIES;
- }
- }
- } else {
- virtual_addr += PAGE_SIZE * MAX_PDE32PAE_ENTRIES * MAX_PTE32PAE_ENTRIES;
- }
- }
-}
-
-
