}
-int mem_hook_dispatch(struct guest_info * info, addr_t mem_addr, pf_error_t access_info, struct vmm_mem_hook * hook) {
+/* mem_addr is the guest physical memory address */
+static int mem_hook_dispatch(struct guest_info * info,
+ addr_t fault_gva, addr_t fault_gpa,
+ pf_error_t access_info, struct vmm_mem_hook * hook)
+{
+
+ // emulate and then dispatch
+ // or dispatch and emulate
- if (access_info.write == 1) {
- void * src = NULL;
- uint_t length = 0;
- PrintDebug("Memory hook write\n");
- return -1;
- if (hook->write(mem_addr, src, length, hook->priv_data) != length) {
+ if (access_info.write == 1) {
+ if (v3_emulate_memory_write(info, fault_gva, hook->write, fault_gpa, hook->priv_data) == -1) {
+ PrintError("Memory write emulation failed\n");
return -1;
}
+
} else {
- PrintDebug("Memory hook read\n");
- return -1;
+ if (v3_emulate_memory_read(info, fault_gva, hook->read, fault_gpa, hook->priv_data) == -1) {
+ PrintError("Memory read emulation failed\n");
+ return -1;
+ }
}
- return -1;
+ return 0;
}
-int handle_special_page_fault(struct guest_info * info, addr_t mem_addr, pf_error_t access_info) {
- struct shadow_region * reg = get_shadow_region_by_addr(&(info->mem_map), mem_addr);
+int handle_special_page_fault(struct guest_info * info,
+ addr_t fault_gva, addr_t fault_gpa,
+ pf_error_t access_info)
+{
+ struct shadow_region * reg = get_shadow_region_by_addr(&(info->mem_map), fault_gpa);
switch (reg->host_type) {
case HOST_REGION_HOOK:
- return mem_hook_dispatch(info, mem_addr, access_info, (struct vmm_mem_hook *)(reg->host_addr));
+ return mem_hook_dispatch(info, fault_gva, fault_gpa, access_info, (struct vmm_mem_hook *)(reg->host_addr));
default:
return -1;
}
-void init_shadow_map(struct shadow_map * map) {
+void init_shadow_map(struct guest_info * info) {
+ struct shadow_map * map = &(info->mem_map);
+
map->num_regions = 0;
map->head = NULL;
} else if (cursor->next->guest_end <= region->guest_start) {
cursor = cursor->next;
} else {
- PrintDebug("WTF?\n");
// This cannot happen!
// we should panic here
return -1;
struct shadow_region *get_shadow_region_by_index(struct shadow_map * map,
- uint_t index) {
+ uint_t index) {
struct shadow_region * reg = map->head;
uint_t i = 0;
struct shadow_region * get_shadow_region_by_addr(struct shadow_map * map,
- addr_t addr) {
+ addr_t addr) {
struct shadow_region * reg = map->head;
while (reg) {