}
}
- return 0;
+ // should never get here
+ return -1;
}
return -1;
}
- return 0;
+ // 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) {
default:
return -1;
}
- return 0;
+
+ // should never get here
+ return -1;
}
*paddr = (addr_t)host_pte;
return 0;
case PT_ENTRY_PAGE:
- if (pte32_lookup(host_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ if (pte32_lookup(V3_VAddr(host_pte), vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
return -1;
}
return 0;
*paddr = 0;
return -1;
case PT_ENTRY_PAGE:
- switch (pde32pae_lookup(host_pde, vaddr, (addr_t *)&host_pte)) {
+ switch (pde32pae_lookup(V3_VAddr(host_pde), vaddr, (addr_t *)&host_pte)) {
case PT_ENTRY_NOT_PRESENT:
*paddr = 0;
return -1;
*paddr = (addr_t)host_pte;
return 0;
case PT_ENTRY_PAGE:
- if (pte32pae_lookup(host_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ if (pte32pae_lookup(V3_VAddr(host_pte), vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
return -1;
}
return 0;
*paddr = 0;
return -1;
case PT_ENTRY_PAGE:
- switch(pdpe64_lookup(host_pdpe, vaddr, (addr_t *)&host_pde)) {
+ switch(pdpe64_lookup(V3_VAddr(host_pdpe), vaddr, (addr_t *)&host_pde)) {
case PT_ENTRY_NOT_PRESENT:
*paddr = 0;
return -1;
PrintError("1 Gigabyte Pages not supported\n");
return -1;
case PT_ENTRY_PAGE:
- switch (pde64_lookup(host_pde, vaddr, (addr_t *)&host_pte)) {
+ 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(host_pte, vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
+ if (pte64_lookup(V3_VAddr(host_pte), vaddr, paddr) == PT_ENTRY_NOT_PRESENT) {
return -1;
}
return 0;
+/*
+ *
+ * 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;
+}
+
+
+
+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;
+
+
+ *access_status = v3_can_access_pml4e64(host_pmle, vaddr, access_type);
+
+ if (*access_status != PT_ACCESS_OK) {
+ return pt_level;
+ }
+
+ 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;
+}
+
+
+
+
+
+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(gen_pt_t * pt, pf_error_t access_type) {
+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)) {
*/
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, access_type);
+ 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, access_type);
+ return can_access_pt_entry(entry, access_type);
}
*/
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, access_type);
+ 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, access_type);
+ 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, access_type);
+ return can_access_pt_entry(entry, access_type);
}
/*
*/
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, access_type);
+ 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, access_type);
+ 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, access_type);
+ 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, access_type);
+ return can_access_pt_entry(entry, access_type);
}
