+vm_offset_t
+kdp_lightweight_fault(vm_map_t map, vm_offset_t cur_target_addr, uint32_t *fault_results)
+{
+#pragma unused(map, cur_target_addr, fault_results)
+
+ return 0;
+#if 0
+ vm_map_entry_t entry;
+ vm_object_t object;
+ vm_offset_t object_offset;
+ vm_page_t m;
+ int compressor_external_state, compressed_count_delta;
+ int compressor_flags = (C_DONT_BLOCK | C_KEEP | C_KDP);
+ int my_fault_type = VM_PROT_READ;
+ kern_return_t kr;
+
+
+ if (not_in_kdp) {
+ panic("kdp_lightweight_fault called from outside of debugger context");
+ }
+
+ assert(map != VM_MAP_NULL);
+
+ assert((cur_target_addr & PAGE_MASK) == 0);
+ if ((cur_target_addr & PAGE_MASK) != 0) {
+ return 0;
+ }
+
+ if (kdp_lck_rw_lock_is_acquired_exclusive(&map->lock)) {
+ return 0;
+ }
+
+ if (!vm_map_lookup_entry(map, cur_target_addr, &entry)) {
+ return 0;
+ }
+
+ if (entry->is_sub_map) {
+ return 0;
+ }
+
+ object = VME_OBJECT(entry);
+ if (object == VM_OBJECT_NULL) {
+ return 0;
+ }
+
+ object_offset = cur_target_addr - entry->vme_start + VME_OFFSET(entry);
+
+ while (TRUE) {
+ if (kdp_lck_rw_lock_is_acquired_exclusive(&object->Lock)) {
+ return 0;
+ }
+
+ if (object->pager_created && (object->paging_in_progress ||
+ object->activity_in_progress)) {
+ return 0;
+ }
+
+ m = kdp_vm_page_lookup(object, object_offset);
+
+ if (m != VM_PAGE_NULL) {
+
+ if ((object->wimg_bits & VM_WIMG_MASK) != VM_WIMG_DEFAULT) {
+ return 0;
+ }
+
+ if (m->laundry || m->busy || m->pageout || m->absent || m->error || m->cleaning ||
+ m->overwriting || m->restart || m->unusual) {
+ return 0;
+ }
+
+ assert(!m->private);
+ if (m->private) {
+ return 0;
+ }
+
+ assert(!m->fictitious);
+ if (m->fictitious) {
+ return 0;
+ }
+
+ assert(!m->encrypted);
+ if (m->encrypted) {
+ return 0;
+ }
+
+ assert(!m->encrypted_cleaning);
+ if (m->encrypted_cleaning) {
+ return 0;
+ }
projects / apple / xnu.git / blobdiff