-
-
+#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_32(pde32_t * pde) {
}
+int v3_translate_guest_pt_32(struct guest_info * info, v3_reg_t guest_cr3, addr_t vaddr, addr_t * paddr) {
+ addr_t guest_pde_pa = CR3_TO_PDE32_PA(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 PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = guest_pte_pa;
+ return 0;
+ case PT_ENTRY_PAGE:
+ {
+ pte32_t * guest_pte = NULL;
+
+ 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) == PT_ENTRY_NOT_PRESENT) {
+ return -1;
+ }
+
+ return 0;
+ }
+ }
+
+ // should never get here
+ return -1;
+}
+
+
+int v3_translate_guest_pt_32pae(struct guest_info * info, v3_reg_t guest_cr3, addr_t vaddr, addr_t * paddr) {
+ addr_t guest_pdpe_pa = CR3_TO_PDPE32PAE_PA(guest_cr3);
+ pdpe32pae_t * guest_pdpe = 0;
+ addr_t guest_pde_pa = 0;
+
+ if (guest_pa_to_host_va(info, guest_pdpe_pa, (addr_t*)&guest_pdpe) == -1) {
+ PrintError("Could not get virtual address of Guest PDPE32PAE (PA=%p)\n",
+ (void *)guest_pdpe_pa);
+ return -1;
+ }
+
+ switch (pdpe32pae_lookup(guest_pdpe, vaddr, &guest_pde_pa))
+ {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_PAGE:
+ {
+ pde32pae_t * guest_pde = NULL;
+ 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 PDE32PAE (PA=%p)\n",
+ (void *)guest_pde_pa);
+ return -1;
+ }
+
+ switch (pde32pae_lookup(guest_pde, vaddr, &guest_pte_pa))
+ {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = guest_pte_pa;
+ return 0;
+ case PT_ENTRY_PAGE:
+ {
+ pte32pae_t * guest_pte = NULL;
+
+ if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t *)&guest_pte) == -1) {
+ PrintError("Could not get virtual Address of Guest PTE32PAE (PA=%p)\n",
+ (void *)guest_pte_pa);
+ return -1;
+ }
+
+ if (pte32pae_lookup(guest_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ return -1;
+ }
+
+ return 0;
+ }
+ }
+ }
+ default:
+ return -1;
+ }
+
+ // should never get here
+ return -1;
+}
+int v3_translate_guest_pt_64(struct guest_info * info, v3_reg_t guest_cr3, addr_t vaddr, addr_t * paddr) {
+ addr_t guest_pml4_pa = CR3_TO_PML4E64_PA(guest_cr3);
+ pml4e64_t * guest_pmle = 0;
+ addr_t guest_pdpe_pa = 0;
+ if (guest_pa_to_host_va(info, guest_pml4_pa, (addr_t*)&guest_pmle) == -1) {
+ PrintError("Could not get virtual address of Guest PML4E64 (PA=%p)\n",
+ (void *)guest_pml4_pa);
+ return -1;
+ }
+
+ switch (pml4e64_lookup(guest_pmle, vaddr, &guest_pdpe_pa)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_PAGE:
+ {
+ pdpe64_t * guest_pdp = NULL;
+ addr_t guest_pde_pa = 0;
+
+ if (guest_pa_to_host_va(info, guest_pdpe_pa, (addr_t *)&guest_pdp) == -1) {
+ PrintError("Could not get virtual address of Guest PDPE64 (PA=%p)\n",
+ (void *)guest_pdpe_pa);
+ return -1;
+ }
-int pt32_lookup(pde32_t * pd, addr_t vaddr, addr_t * paddr) {
- addr_t pde_entry;
- pde32_entry_type_t pde_entry_type;
+ switch (pdpe64_lookup(guest_pdp, vaddr, &guest_pde_pa)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = 0;
+ PrintError("1 Gigabyte Pages not supported\n");
+ return -1;
+ case PT_ENTRY_PAGE:
+ {
+ pde64_t * guest_pde = NULL;
+ 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 PDE64 (PA=%p)\n",
+ (void *)guest_pde_pa);
+ return -1;
+ }
- if (pd == 0) {
+ switch (pde64_lookup(guest_pde, vaddr, &guest_pte_pa)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = guest_pte_pa;
+ return 0;
+ case PT_ENTRY_PAGE:
+ {
+ pte64_t * guest_pte = NULL;
+
+ if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t *)&guest_pte) == -1) {
+ PrintError("Could not get virtual address of guest PTE64 (PA=%p)\n",
+ (void *)guest_pte_pa);
+ return -1;
+ }
+
+ if (pte64_lookup(guest_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ return -1;
+ }
+
+ return 0;
+ }
+ }
+ }
+ }
+ }
+ default:
return -1;
}
- pde_entry_type = pde32_lookup(pd, vaddr, &pde_entry);
+ // should never get here
+ return -1;
+}
+
- if (pde_entry_type == PDE32_ENTRY_PTE32) {
- return pte32_lookup((pte32_t *)pde_entry, vaddr, paddr);
- } else if (pde_entry_type == PDE32_ENTRY_LARGE_PAGE) {
- *paddr = pde_entry;
+
+int v3_translate_host_pt_32(v3_reg_t host_cr3, addr_t vaddr, addr_t * paddr) {
+ pde32_t * host_pde = (pde32_t *)CR3_TO_PDE32_VA(host_cr3);
+ pte32_t * host_pte = 0;
+
+ switch (pde32_lookup(host_pde, vaddr, (addr_t *)&host_pte)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = (addr_t)host_pte;
+ return 0;
+ case PT_ENTRY_PAGE:
+ if (pte32_lookup(V3_VAddr(host_pte), vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ return -1;
+ }
return 0;
}
+
+ // should never get here
+ return -1;
+}
+
+
+int v3_translate_host_pt_32pae(v3_reg_t host_cr3, addr_t vaddr, addr_t * paddr) {
+ pdpe32pae_t * host_pdpe = (pdpe32pae_t *)CR3_TO_PDPE32PAE_VA(host_cr3);
+ pde32pae_t * host_pde = NULL;
+ pte32pae_t * host_pte = NULL;
+ switch (pdpe32pae_lookup(host_pdpe, vaddr, (addr_t *)&host_pde)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_PAGE:
+ switch (pde32pae_lookup(V3_VAddr(host_pde), vaddr, (addr_t *)&host_pte)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = (addr_t)host_pte;
+ return 0;
+ case PT_ENTRY_PAGE:
+ if (pte32pae_lookup(V3_VAddr(host_pte), vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ return -1;
+ }
+ return 0;
+ }
+ default:
+ return -1;
+ }
+
+ // should never get here
return -1;
}
+int v3_translate_host_pt_64(v3_reg_t host_cr3, addr_t vaddr, addr_t * paddr) {
+ pml4e64_t * host_pmle = (pml4e64_t *)CR3_TO_PML4E64_VA(host_cr3);
+ pdpe64_t * host_pdpe = NULL;
+ pde64_t * host_pde = NULL;
+ pte64_t * host_pte = NULL;
+
+ switch(pml4e64_lookup(host_pmle, vaddr, (addr_t *)&host_pdpe)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_PAGE:
+ switch(pdpe64_lookup(V3_VAddr(host_pdpe), vaddr, (addr_t *)&host_pde)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = 0;
+ PrintError("1 Gigabyte Pages not supported\n");
+ return -1;
+ case PT_ENTRY_PAGE:
+ switch (pde64_lookup(V3_VAddr(host_pde), vaddr, (addr_t *)&host_pte)) {
+ case PT_ENTRY_NOT_PRESENT:
+ *paddr = 0;
+ return -1;
+ case PT_ENTRY_LARGE_PAGE:
+ *paddr = (addr_t)host_pte;
+ return 0;
+ case PT_ENTRY_PAGE:
+ if (pte64_lookup(V3_VAddr(host_pte), vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ return -1;
+ }
+ return 0;
+ }
+ }
+ default:
+ return -1;
+ }
-/* We can't do a full lookup because we don't know what context the page tables are in...
- * 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...
+ // should never get here
+ return -1;
+}
+
+
+
+
+
+/*
+ * PAGE TABLE LOOKUP FUNCTIONS
+ *
+ *
+ * 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) {
+
+/**
+ *
+ * 32 bit Page Table lookup functions
+ *
+ **/
+
+pt_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->present) {
*entry = 0;
- return PDE32_ENTRY_NOT_PRESENT;
- } else {
+ return PT_ENTRY_NOT_PRESENT;
+ } else if (pde_entry->large_page) {
+ pde32_4MB_t * large_pde = (pde32_4MB_t *)pde_entry;
- if (pde_entry->large_page) {
- pde32_4MB_t * large_pde = (pde32_4MB_t *)pde_entry;
+ *entry = BASE_TO_PAGE_ADDR_4MB(large_pde->page_base_addr);
+ *entry += PAGE_OFFSET_4MB(addr);
- *entry = PDE32_4MB_T_ADDR(*large_pde);
- *entry += PD32_4MB_PAGE_OFFSET(addr);
- return PDE32_ENTRY_LARGE_PAGE;
- } else {
- *entry = PDE32_T_ADDR(*pde_entry);
- return PDE32_ENTRY_PTE32;
- }
- }
- return PDE32_ENTRY_NOT_PRESENT;
+ return PT_ENTRY_LARGE_PAGE;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pde_entry->pt_base_addr);
+ return PT_ENTRY_PAGE;
+ }
}
/* Takes a virtual addr (addr) and returns the physical addr (entry) as defined in the page table
*/
-int pte32_lookup(pte32_t * pt, addr_t addr, addr_t * entry) {
+pt_entry_type_t pte32_lookup(pte32_t * pt, addr_t addr, addr_t * entry) {
pte32_t * pte_entry = &(pt[PTE32_INDEX(addr)]);
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 PT_ENTRY_NOT_PRESENT;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pte_entry->page_base_addr) + PAGE_OFFSET(addr);
+ return PT_ENTRY_PAGE;
+ }
+
+}
+
+
+
+/**
+ *
+ * 32 bit PAE Page Table lookup functions
+ *
+ **/
+pt_entry_type_t 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 PT_ENTRY_NOT_PRESENT;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pdpe_entry->pd_base_addr);
+ return PT_ENTRY_PAGE;
+ }
+}
+
+pt_entry_type_t pde32pae_lookup(pde32pae_t * pd, addr_t addr, addr_t * entry) {
+ pde32pae_t * pde_entry = &(pd[PDE32PAE_INDEX(addr)]);
+
+ if (!pde_entry->present) {
+ *entry = 0;
+ return PT_ENTRY_NOT_PRESENT;
+ } else if (pde_entry->large_page) {
+ pde32pae_2MB_t * large_pde = (pde32pae_2MB_t *)pde_entry;
+
+ *entry = BASE_TO_PAGE_ADDR_2MB(large_pde->page_base_addr);
+ *entry += PAGE_OFFSET_2MB(addr);
+
+ return PT_ENTRY_LARGE_PAGE;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pde_entry->pt_base_addr);
+ return PT_ENTRY_PAGE;
+ }
+}
+
+pt_entry_type_t pte32pae_lookup(pte32pae_t * pt, addr_t addr, addr_t * entry) {
+ pte32pae_t * pte_entry = &(pt[PTE32PAE_INDEX(addr)]);
+
+ if (!pte_entry->present) {
+ *entry = 0;
+ return PT_ENTRY_NOT_PRESENT;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pte_entry->page_base_addr) + PAGE_OFFSET(addr);
+ return PT_ENTRY_PAGE;
+ }
+}
+
+
+
+/**
+ *
+ * 64 bit Page Table lookup functions
+ *
+ **/
+pt_entry_type_t pml4e64_lookup(pml4e64_t * pml, addr_t addr, addr_t * entry) {
+ pml4e64_t * pml_entry = &(pml[PML4E64_INDEX(addr)]);
+
+ if (!pml_entry->present) {
+ *entry = 0;
+ return PT_ENTRY_NOT_PRESENT;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pml_entry->pdp_base_addr);
+ return PT_ENTRY_PAGE;
+ }
+}
+
+pt_entry_type_t pdpe64_lookup(pdpe64_t * pdp, addr_t addr, addr_t * entry) {
+ pdpe64_t * pdpe_entry = &(pdp[PDPE64_INDEX(addr)]);
+
+ if (!pdpe_entry->present) {
+ *entry = 0;
+ return PT_ENTRY_NOT_PRESENT;
+ } else if (pdpe_entry->large_page) {
+ PrintError("1 Gigabyte pages not supported\n");
+ V3_ASSERT(0);
return -1;
} else {
- *entry = PTE32_T_ADDR(*pte_entry) + PT32_PAGE_OFFSET(addr);
+ *entry = BASE_TO_PAGE_ADDR(pdpe_entry->pd_base_addr);
+ return PT_ENTRY_PAGE;
+ }
+}
+
+pt_entry_type_t pde64_lookup(pde64_t * pd, addr_t addr, addr_t * entry) {
+ pde64_t * pde_entry = &(pd[PDE64_INDEX(addr)]);
+
+ if (!pde_entry->present) {
+ *entry = 0;
+ return PT_ENTRY_NOT_PRESENT;
+ } else if (pde_entry->large_page) {
+ pde64_2MB_t * large_pde = (pde64_2MB_t *)pde_entry;
+
+ *entry = BASE_TO_PAGE_ADDR_2MB(large_pde->page_base_addr);
+ *entry += PAGE_OFFSET_2MB(addr);
+
+ return PT_ENTRY_LARGE_PAGE;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pde_entry->pt_base_addr);
+ return PT_ENTRY_PAGE;
+ }
+}
+
+pt_entry_type_t pte64_lookup(pte64_t * pt, addr_t addr, addr_t * entry) {
+ pte64_t * pte_entry = &(pt[PTE64_INDEX(addr)]);
+
+ if (!pte_entry->present) {
+ *entry = 0;
+ return PT_ENTRY_NOT_PRESENT;
+ } else {
+ *entry = BASE_TO_PAGE_ADDR(pte_entry->page_base_addr) + PAGE_OFFSET(addr);
+ return PT_ENTRY_PAGE;
+ }
+}
+
+
+
+
+
+
+
+
+/*
+ *
+ * Page Table Access Checks
+ *
+ */
+
+
+
+
+
+
+int v3_check_host_pt_32(v3_reg_t host_cr3, addr_t vaddr, pf_error_t access_type, pt_access_status_t * access_status) {
+ pde32_t * host_pde = (pde32_t *)CR3_TO_PDE32_VA(host_cr3);
+ pte32_t * host_pte = 0;
+
+ int pt_level = 2;
+
+ // Check accessibility of PDE
+ *access_status = v3_can_access_pde32(host_pde, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pde32_lookup(host_pde, vaddr, (addr_t *)&host_pte)) {
+ case PT_ENTRY_LARGE_PAGE:
return 0;
+ case PT_ENTRY_PAGE:
+ *access_status = v3_can_access_pte32(V3_VAddr(host_pte), vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ return 0;
+ default:
+ return -1;
}
+
+ // should never get here
+ return -1;
+}
+
+int v3_check_host_pt_32pae(v3_reg_t host_cr3, addr_t vaddr, pf_error_t access_type, pt_access_status_t * access_status) {
+ pdpe32pae_t * host_pdpe = (pdpe32pae_t *)CR3_TO_PDPE32PAE_VA(host_cr3);
+ pde32pae_t * host_pde = NULL;
+ pte32pae_t * host_pte = NULL;
+ int pt_level = 3;
+
+ *access_status = v3_can_access_pdpe32pae(host_pdpe, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pdpe32pae_lookup(host_pdpe, vaddr, (addr_t *)&host_pde)) {
+ case PT_ENTRY_PAGE:
+ *access_status = v3_can_access_pde32pae(V3_VAddr(host_pde), vaddr, access_type);
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pde32pae_lookup(V3_VAddr(host_pde), vaddr, (addr_t *)&host_pte)) {
+ case PT_ENTRY_LARGE_PAGE:
+ return 0;
+ case PT_ENTRY_PAGE:
+ *access_status = v3_can_access_pte32pae(V3_VAddr(host_pte), vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ return 0;
+ default:
+ return -1;
+ }
+ default:
+ return -1;
+ }
+
+ // should never get here
return -1;
}
-pt_access_status_t can_access_pde32(pde32_t * pde, addr_t addr, pf_error_t access_type) {
- pde32_t * entry = &pde[PDE32_INDEX(addr)];
+int v3_check_host_pt_64(v3_reg_t host_cr3, addr_t vaddr, pf_error_t access_type, pt_access_status_t * access_status) {
+ pml4e64_t * host_pmle = (pml4e64_t *)CR3_TO_PML4E64_VA(host_cr3);
+ pdpe64_t * host_pdpe = NULL;
+ pde64_t * host_pde = NULL;
+ pte64_t * host_pte = NULL;
+ int pt_level = 4;
- if (entry->present == 0) {
- return PT_ENTRY_NOT_PRESENT;
- } else if ((entry->writable == 0) && (access_type.write == 1)) {
- return PT_WRITE_ERROR;
- } else if ((entry->user_page == 0) && (access_type.user == 1)) {
- // Check CR0.WP?
- return PT_USER_ERROR;
+
+ *access_status = v3_can_access_pml4e64(host_pmle, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
}
- return PT_ACCESS_OK;
+ pt_level--;
+
+ switch(pml4e64_lookup(host_pmle, vaddr, (addr_t *)&host_pdpe)) {
+ case PT_ENTRY_PAGE:
+ *access_status = v3_can_access_pdpe64(V3_VAddr(host_pdpe), vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch(pdpe64_lookup(V3_VAddr(host_pdpe), vaddr, (addr_t *)&host_pde)) {
+ case PT_ENTRY_LARGE_PAGE:
+ return 0;
+ case PT_ENTRY_PAGE:
+ *access_status = v3_can_access_pde64(V3_VAddr(host_pde), vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pde64_lookup(V3_VAddr(host_pde), vaddr, (addr_t *)&host_pte)) {
+ case PT_ENTRY_LARGE_PAGE:
+ return 0;
+ case PT_ENTRY_PAGE:
+ *access_status = v3_can_access_pte64(V3_VAddr(host_pte), vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ return 0;
+ default:
+ return -1;
+ }
+ default:
+ return -1;
+ }
+ default:
+ return -1;
+ }
+
+ // should never get here
+ return -1;
}
-pt_access_status_t can_access_pte32(pte32_t * pte, addr_t addr, pf_error_t access_type) {
- pte32_t * entry = &pte[PTE32_INDEX(addr)];
- if (entry->present == 0) {
- return PT_ENTRY_NOT_PRESENT;
- } else if ((entry->writable == 0) && (access_type.write == 1)) {
- return PT_WRITE_ERROR;
- } else if ((entry->user_page == 0) && (access_type.user == 1)) {
+
+
+int v3_check_guest_pt_32(struct guest_info * info, v3_reg_t guest_cr3, addr_t vaddr,
+ pf_error_t access_type, pt_access_status_t * access_status) {
+ addr_t guest_pde_pa = CR3_TO_PDE32_PA(guest_cr3);
+ pde32_t * guest_pde = NULL;
+ addr_t guest_pte_pa = 0;
+ int pt_level = 2;
+
+ 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;
+ }
+
+
+ // Check accessibility of PDE
+ *access_status = v3_can_access_pde32(guest_pde, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pde32_lookup(guest_pde, vaddr, &guest_pte_pa)) {
+ case PT_ENTRY_LARGE_PAGE:
+ return 0;
+ case PT_ENTRY_PAGE:
+ {
+ pte32_t * guest_pte = NULL;
+
+ 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;
+ }
+
+ *access_status = v3_can_access_pte32(guest_pte, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+ return 0;
+ }
+ default:
+ return -1;
+ }
+
+ // should never get here
+ return -1;
+}
+
+
+
+
+
+int v3_check_guest_pt_32pae(struct guest_info * info, v3_reg_t guest_cr3, addr_t vaddr,
+ pf_error_t access_type, pt_access_status_t * access_status) {
+ addr_t guest_pdpe_pa = CR3_TO_PDPE32PAE_PA(guest_cr3);
+ pdpe32pae_t * guest_pdpe = NULL;
+ addr_t guest_pde_pa = 0;
+ int pt_level = 3;
+
+ if (guest_pa_to_host_va(info, guest_pdpe_pa, (addr_t*)&guest_pdpe) == -1) {
+ PrintError("Could not get virtual address of Guest PDPE32PAE (PA=%p)\n",
+ (void *)guest_pdpe_pa);
+ return -1;
+ }
+
+ *access_status = v3_can_access_pdpe32pae(guest_pdpe, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pdpe32pae_lookup(guest_pdpe, vaddr, &guest_pde_pa)) {
+ case PT_ENTRY_PAGE:
+ {
+ pde32pae_t * guest_pde = NULL;
+ 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 PDE32PAE (PA=%p)\n",
+ (void *)guest_pde_pa);
+ return -1;
+ }
+
+ *access_status = v3_can_access_pde32pae(guest_pde, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pde32pae_lookup(guest_pde, vaddr, &guest_pte_pa)) {
+ case PT_ENTRY_LARGE_PAGE:
+ return 0;
+ case PT_ENTRY_PAGE:
+ {
+ pte32pae_t * guest_pte = NULL;
+
+ if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t *)&guest_pte) == -1) {
+ PrintError("Could not get virtual Address of Guest PTE32PAE (PA=%p)\n",
+ (void *)guest_pte_pa);
+ return -1;
+ }
+
+ *access_status = v3_can_access_pte32pae(guest_pte, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ return 0;
+ }
+ default:
+ return -1;
+ }
+ }
+ default:
+ return -1;
+ }
+
+ // should never get here
+ return -1;
+}
+
+
+ pte64_t * guest_pte = NULL;
+
+int v3_check_guest_pt_64(struct guest_info * info, v3_reg_t guest_cr3, addr_t vaddr,
+ pf_error_t access_type, pt_access_status_t * access_status) {
+ addr_t guest_pml4_pa = CR3_TO_PML4E64_PA(guest_cr3);
+ pml4e64_t * guest_pmle = NULL;
+ addr_t guest_pdpe_pa = 0;
+ int pt_level = 4;
+
+ if (guest_pa_to_host_va(info, guest_pml4_pa, (addr_t*)&guest_pmle) == -1) {
+ PrintError("Could not get virtual address of Guest PML4E64 (PA=%p)\n",
+ (void *)guest_pml4_pa);
+ return -1;
+ }
+
+ *access_status = v3_can_access_pml4e64(guest_pmle, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch(pml4e64_lookup(guest_pmle, vaddr, &guest_pdpe_pa)) {
+ case PT_ENTRY_PAGE:
+ {
+ pdpe64_t * guest_pdp = NULL;
+ addr_t guest_pde_pa = 0;
+
+ if (guest_pa_to_host_va(info, guest_pdpe_pa, (addr_t *)&guest_pdp) == -1) {
+ PrintError("Could not get virtual address of Guest PDPE64 (PA=%p)\n",
+ (void *)guest_pdpe_pa);
+ return -1;
+ }
+
+ *access_status = v3_can_access_pdpe64(guest_pdp, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch(pdpe64_lookup(guest_pdp, vaddr, &guest_pde_pa)) {
+ case PT_ENTRY_LARGE_PAGE:
+ return 0;
+ case PT_ENTRY_PAGE:
+ {
+ pde64_t * guest_pde = NULL;
+ 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 PDE64 (PA=%p)\n",
+ (void *)guest_pde_pa);
+ return -1;
+ }
+
+ *access_status = v3_can_access_pde64(guest_pde, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ pt_level--;
+
+ switch (pde64_lookup(guest_pde, vaddr, &guest_pte_pa)) {
+ case PT_ENTRY_LARGE_PAGE:
+ return 0;
+ case PT_ENTRY_PAGE:
+ {
+ pte64_t * guest_pte = NULL;
+
+ if (guest_pa_to_host_va(info, guest_pte_pa, (addr_t *)&guest_pte) == -1) {
+ PrintError("Could not get virtual address of guest PTE64 (PA=%p)\n",
+ (void *)guest_pte_pa);
+ return -1;
+ }
+
+ *access_status = v3_can_access_pte64(guest_pte, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ return 0;
+ }
+ default:
+ return -1;
+ }
+ }
+ default:
+ return -1;
+ }
+ }
+ default:
+ return -1;
+ }
+
+ // should never get here
+ return -1;
+}
+
+
+
+
+
+static pt_access_status_t can_access_pt_entry(gen_pt_t * pt, pf_error_t access_type) {
+ if (pt->present == 0) {
+ return PT_ACCESS_NOT_PRESENT;
+ } else if ((pt->writable == 0) && (access_type.write == 1)) {
+ return PT_ACCESS_WRITE_ERROR;
+ } else if ((pt->user_page == 0) && (access_type.user == 1)) {
// Check CR0.WP?
- return PT_USER_ERROR;
+ return PT_ACCESS_USER_ERROR;
}
return PT_ACCESS_OK;
+/*
+ * 32 bit access checks
+ */
+pt_access_status_t inline v3_can_access_pde32(pde32_t * pde, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pde[PDE32_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+pt_access_status_t inline v3_can_access_pte32(pte32_t * pte, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pte[PTE32_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+
+/*
+ * 32 bit PAE access checks
+ */
+pt_access_status_t inline v3_can_access_pdpe32pae(pdpe32pae_t * pdpe, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pdpe[PDPE32PAE_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+pt_access_status_t inline v3_can_access_pde32pae(pde32pae_t * pde, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pde[PDE32PAE_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+pt_access_status_t inline v3_can_access_pte32pae(pte32pae_t * pte, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pte[PTE32PAE_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+/*
+ * 64 Bit access checks
+ */
+pt_access_status_t inline v3_can_access_pml4e64(pml4e64_t * pmle, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pmle[PML4E64_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+pt_access_status_t inline v3_can_access_pdpe64(pdpe64_t * pdpe, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pdpe[PDPE64_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+pt_access_status_t inline v3_can_access_pde64(pde64_t * pde, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pde[PDE32_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+pt_access_status_t inline v3_can_access_pte64(pte64_t * pte, addr_t addr, pf_error_t access_type) {
+ gen_pt_t * entry = (gen_pt_t *)&pte[PTE64_INDEX(addr)];
+ return can_access_pt_entry(entry, access_type);
+}
+
+
+
+
+
+
+
+
+
/* We generate a page table to correspond to a given memory layout
* pulling pages from the mem_list when necessary
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));
}
}
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;
}
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].write_through = 0;
pde[k].cache_disable = 0;
pde[k].accessed = 0;
- pde[k].reserved = 0;
+ pde[k].avail = 0;
pde[k].large_page = 0;
//pde[k].global_page = 0;
pde[k].vmm_info = 0;
pde[k].write_through = 0;
pde[k].cache_disable = 0;
pde[k].accessed = 0;
- pde[k].reserved = 0;
+ pde[k].avail = 0;
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].write_through = 0;
pdpe[j].cache_disable = 0;
pdpe[j].accessed = 0;
- pdpe[j].reserved = 0;
+ pdpe[j].avail = 0;
pdpe[j].large_page = 0;
//pdpe[j].global_page = 0;
pdpe[j].vmm_info = 0;
pdpe[j].write_through = 0;
pdpe[j].cache_disable = 0;
pdpe[j].accessed = 0;
- pdpe[j].reserved = 0;
+ pdpe[j].avail = 0;
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));
}
}
return pml;
}
+/*
+int v3_walk_guest_pt_32(struct guest_info * info, v3_reg_t guest_cr3,
+ int (*callback)(int level, addr_t page_va, addr_t page_pa, void private_data),
+ void * private_data) {
+ addr_t guest_pde_pa = CR3_TO_PDE32_PA(guest_cr3);
+ pde32_t * guest_pde = NULL;
+ int i, j;
+ if (!callback) {
+ PrintError("Call back was not specified\n");
+ return -1;
+ }
+ 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;
+ }
+ callback(PAGE_PD32, guest_pde, guest_pde_pa, private_data);
+ for (i = 0; i < MAX_PDE32_ENTRIES; i++) {
+ if (guet_pde[i].present) {
+ if (guest_pde[i].large_page) {
-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);
}
+*/
+int v3_walk_host_pt_32(v3_reg_t host_cr3,
+ int (*callback)(int level, addr_t page_va, addr_t page_pa, void * private_data),
+ void * private_data) {
+ pde32_t * host_pde = (pde32_t *)CR3_TO_PDE32_VA(host_cr3);
+ addr_t pde_pa = CR3_TO_PDE32_PA(host_cr3);
+ int i, j;
+ if (!callback) {
+ PrintError("Call back was not specified\n");
+ return -1;
+ }
+ callback(PAGE_PD32, (addr_t)host_pde, pde_pa, private_data);
+ for (i = 0; i < MAX_PDE32_ENTRIES; i++) {
+ if (host_pde[i].present) {
+ if (host_pde[i].large_page) {
+ pde32_4MB_t * large_pde = (pde32_4MB_t *)&(host_pde[i]);
+ addr_t large_page_pa = BASE_TO_PAGE_ADDR_4MB(large_pde->page_base_addr);
+ callback(PAGE_4MB, (addr_t)V3_VAddr((void *)large_page_pa), large_page_pa, private_data);
+ } else {
+ addr_t pte_pa = BASE_TO_PAGE_ADDR(host_pde[i].pt_base_addr);
+ pte32_t * tmp_pte = (pte32_t *)V3_VAddr((void *)pte_pa);
+ callback(PAGE_PT32, (addr_t)tmp_pte, pte_pa, private_data);
-
-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]));
+ for (j = 0; j < MAX_PTE32_ENTRIES; j++) {
+ if (tmp_pte[j].present) {
+ addr_t page_pa = BASE_TO_PAGE_ADDR(tmp_pte[j].page_base_addr);
+ callback(PAGE_4KB, (addr_t)V3_VAddr((void *)page_pa), page_pa, private_data);
+ }
+ }
+ }
}
}
+ return 0;
}
+
-
-
-
-void PrintDebugPageTables(pde32_t * pde)
-{
- int i;
+int v3_walk_host_pt_32pae(v3_reg_t host_cr3,
+ void (*callback)(page_type_t type, addr_t page_va, addr_t page_pa, void * private_data),
+ void * private_data) {
+ pdpe32pae_t * host_pdpe = (pdpe32pae_t *)CR3_TO_PDPE32PAE_VA(host_cr3);
+ addr_t pdpe_pa = CR3_TO_PDPE32PAE_PA(host_cr3);
+ int i, j, k;
- 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)));
- }
+ if (!callback) {
+ PrintError("Callback was not specified\n");
+ return -1;
}
-}
-
-
-
-
-
-
-
-
-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]));
-
+ callback(PAGE_PDP32PAE, (addr_t)host_pdpe, pdpe_pa, private_data);
+
+ for (i = 0; i < MAX_PDPE32PAE_ENTRIES; i++) {
+ if (host_pdpe[i].present) {
+ addr_t pde_pa = BASE_TO_PAGE_ADDR(host_pdpe[i].pd_base_addr);
+ pde32pae_t * tmp_pde = (pde32pae_t *)V3_VAddr((void *)pde_pa);
+
+ callback(PAGE_PD32PAE, (addr_t)tmp_pde, pde_pa, private_data);
+
for (j = 0; j < MAX_PDE32PAE_ENTRIES; j++) {
+ if (tmp_pde[j].present) {
+
+ if (tmp_pde[j].large_page) {
+ pde32pae_2MB_t * large_pde = (pde32pae_2MB_t *)&(tmp_pde[j]);
+ addr_t large_page_pa = BASE_TO_PAGE_ADDR_2MB(large_pde->page_base_addr);
- 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]));
+ callback(PAGE_2MB, (addr_t)V3_VAddr((void *)large_page_pa), large_page_pa, private_data);
+ } else {
+ addr_t pte_pa = BASE_TO_PAGE_ADDR(tmp_pde[j].pt_base_addr);
+ pte32pae_t * tmp_pte = (pte32pae_t *)V3_VAddr((void *)pte_pa);
+
+ callback(PAGE_PT32PAE, (addr_t)tmp_pte, pte_pa, private_data);
+
+ for (k = 0; k < MAX_PTE32PAE_ENTRIES; k++) {
+ if (tmp_pte[k].present) {
+ addr_t page_pa = BASE_TO_PAGE_ADDR(tmp_pte[k].page_base_addr);
+ callback(PAGE_4KB, (addr_t)V3_VAddr((void *)page_pa), page_pa, private_data);
+ }
}
-
- virtual_addr += PAGE_SIZE;
- }
- } else {
- virtual_addr += PAGE_SIZE * MAX_PTE32PAE_ENTRIES;
+ }
}
}
- } else {
- virtual_addr += PAGE_SIZE * MAX_PDE32PAE_ENTRIES * MAX_PTE32PAE_ENTRIES;
}
}
+ return 0;
}
-
-
-
-void PrintPML4e64(addr_t virtual_address, pml4e64_t * pml)
-{
- PrintDebug("PML4e64 %p -> %p : present=%x, writable=%x, user=%x, wt=%x, cd=%x, accessed=%x, reserved=%x, kernelInfo=%x\n",
- (void *)virtual_address,
- (void *)(addr_t) (BASE_TO_PAGE_ADDR(pml->pdp_base_addr)),
- pml->present,
- pml->writable,
- pml->user_page,
- pml->write_through,
- pml->cache_disable,
- pml->accessed,
- pml->reserved,
- pml->vmm_info);
-}
-
-void PrintPDPE64(addr_t virtual_address, pdpe64_t * pdpe)
-{
- PrintDebug("PDPE64 %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) (BASE_TO_PAGE_ADDR(pdpe->pd_base_addr)),
- pdpe->present,
- pdpe->writable,
- pdpe->user_page,
- pdpe->write_through,
- pdpe->cache_disable,
- pdpe->accessed,
- pdpe->reserved,
- pdpe->large_page,
- 0,//pdpe->global_page,
- pdpe->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) (BASE_TO_PAGE_ADDR(pde->pt_base_addr)),
- 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)(BASE_TO_PAGE_ADDR(pte->page_base_addr)),
- 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);
-}
+int v3_walk_host_pt_64(v3_reg_t host_cr3,
+ void (*callback)(page_type_t type, addr_t page_va, addr_t page_pa, void * private_data),
+ void * private_data) {
+ pml4e64_t * host_pml = (pml4e64_t *)CR3_TO_PML4E64_VA(host_cr3);
+ addr_t pml_pa = CR3_TO_PML4E64_PA(host_cr3);
+ int i, j, k, m;
-
+ if (!callback) {
+ PrintError("Callback was not specified\n");
+ return -1;
+ }
+ callback(PAGE_PML464, (addr_t)host_pml, pml_pa, private_data);
+ for (i = 0; i < MAX_PML4E64_ENTRIES; i++) {
+ if (host_pml[i].present) {
+ addr_t pdpe_pa = BASE_TO_PAGE_ADDR(host_pml[i].pdp_base_addr);
+ pdpe64_t * tmp_pdpe = (pdpe64_t *)V3_VAddr((void *)pdpe_pa);
-void PrintPageTree_64(addr_t virtual_addr, pml4e64_t * pml) {
- uint_t pml4_index = PML4E64_INDEX(virtual_addr);
- uint_t pdpe_index = PDPE64_INDEX(virtual_addr);
- uint_t pde_index = PDE64_INDEX(virtual_addr);
- uint_t pte_index = PTE64_INDEX(virtual_addr);
+ callback(PAGE_PDP64, (addr_t)tmp_pdpe, pdpe_pa, private_data);
- PrintPML4e64(virtual_addr, &(pml[pml4_index]));
- if (pml[pml4_index].present) {
- pdpe64_t * pdpe = (pdpe64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(pml[pml4_index].pdp_base_addr));
- PrintPDPE64(virtual_addr, &(pdpe[pdpe_index]));
+ for (j = 0; j < MAX_PDPE64_ENTRIES; j++) {
+ if (tmp_pdpe[j].present) {
+ if (tmp_pdpe[j].large_page) {
+ pdpe64_1GB_t * large_pdp = (pdpe64_1GB_t *)&(tmp_pdpe[j]);
+ addr_t large_page_pa = BASE_TO_PAGE_ADDR_1GB(large_pdp->page_base_addr);
- if (pdpe[pdpe_index].present) {
- pde64_t * pde = (pde64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
- PrintPDE64(virtual_addr, &(pde[pde_index]));
-
- if (pde[pde_index].present) {
- pte64_t * pte = (pte64_t *)V3_VAddr((void *)(addr_t)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
- PrintPTE64(virtual_addr, &(pte[pte_index]));
+ callback(PAGE_1GB, (addr_t)V3_VAddr((void *)large_page_pa), large_page_pa, private_data);
+ } else {
+ addr_t pde_pa = BASE_TO_PAGE_ADDR(tmp_pdpe[j].pd_base_addr);
+ pde64_t * tmp_pde = (pde64_t *)V3_VAddr((void *)pde_pa);
+
+ callback(PAGE_PD64, (addr_t)tmp_pde, pde_pa, private_data);
+
+ for (k = 0; k < MAX_PDE64_ENTRIES; k++) {
+ if (tmp_pde[k].present) {
+ if (tmp_pde[k].large_page) {
+ pde64_2MB_t * large_pde = (pde64_2MB_t *)&(tmp_pde[k]);
+ addr_t large_page_pa = BASE_TO_PAGE_ADDR_2MB(large_pde->page_base_addr);
+
+ callback(PAGE_2MB, (addr_t)V3_VAddr((void *)large_page_pa), large_page_pa, private_data);
+ } else {
+ addr_t pte_pa = BASE_TO_PAGE_ADDR(tmp_pde[k].pt_base_addr);
+ pte64_t * tmp_pte = (pte64_t *)V3_VAddr((void *)pte_pa);
+
+ callback(PAGE_PT64, (addr_t)tmp_pte, pte_pa, private_data);
+
+ for (m = 0; m < MAX_PTE64_ENTRIES; m++) {
+ if (tmp_pte[m].present) {
+ addr_t page_pa = BASE_TO_PAGE_ADDR(tmp_pte[m].page_base_addr);
+ callback(PAGE_4KB, (addr_t)V3_VAddr((void *)page_pa), page_pa, private_data);
+ }
+ }
+ }
+ }
+ }
+ }
+ }
}
-
}
-
- }
-
-}
-
-
-
-
-void PrintPageTree(v3_vm_cpu_mode_t cpu_mode, addr_t virtual_addr, addr_t cr3) {
- switch (cpu_mode) {
- case LONG:
- case LONG_32_COMPAT:
- case LONG_16_COMPAT:
- PrintPageTree_64(virtual_addr, CR3_TO_PML4E64(cr3));
- break;
- default:
- PrintError("Unsupported CPU MODE %d\n", cpu_mode);
- break;
}
+ return 0;
}
