struct guest_info;
-/*
-
- Guest Shadow Host
- Virtual Physical Virtual Physical Virtual Physical
- OK OK
- OK NOK
- NOK OK
- NOK NOK
-
-*/
-
-// These are the types of physical memory address regions
-// from the perspective of the guest
-typedef enum guest_region_type {
- GUEST_REGION_NOTHING,
- GUEST_REGION_PHYSICAL_MEMORY,
- GUEST_REGION_MEMORY_MAPPED_DEVICE} guest_region_type_t;
// These are the types of physical memory address regions
// from the perspective of the HOST
-typedef enum host_region_type {
- HOST_REGION_INVALID, // This region is INVALID (this is a return type, to denote errors)
- HOST_REGION_HOOK, // This region is mapped as not present (always generate page faults)
- HOST_REGION_PHYSICAL_MEMORY, // Region is a section of host memory
- HOST_REGION_MEMORY_MAPPED_DEVICE, // Region is allocated for DMA
- HOST_REGION_UNALLOCATED, // Region is mapped on demand
- HOST_REGION_REMOTE, // Region is located on a remote machine
- HOST_REGION_SWAPPED, // Region is swapped
-} host_region_type_t;
+typedef enum shdw_region_type {
+ SHDW_REGION_INVALID, // This region is INVALID (this is a return type to denote errors)
+ SHDW_REGION_WRITE_HOOK, // This region is mapped as read-only (page faults on write)
+ SHDW_REGION_FULL_HOOK, // This region is mapped as not present (always generate page faults)
+ SHDW_REGION_ALLOCATED, // Region is a section of host memory
+ SHDW_REGION_UNALLOCATED, // Region is mapped on demand
+} shdw_region_type_t;
-#define shadow_mem_type_t host_region_type_t
+struct vmm_mem_hook;
struct shadow_region {
- guest_region_type_t guest_type;
addr_t guest_start;
addr_t guest_end;
- host_region_type_t host_type;
- addr_t host_addr; // This either points to a host address mapping,
- // or a structure holding the map info
+ shdw_region_type_t host_type;
+
+ addr_t host_addr; // This either points to a host address mapping
+
+
+ // Called when data is read from a memory page
+ int (*read_hook)(addr_t guest_addr, void * dst, uint_t length, void * priv_data);
+ // Called when data is written to a memory page
+ int (*write_hook)(addr_t guest_addr, void * src, uint_t length, void * priv_data);
+
+ void * priv_data;
struct shadow_region *next, *prev;
};
};
+
void init_shadow_region(struct shadow_region * entry,
- addr_t guest_addr_start,
- addr_t guest_addr_end,
- guest_region_type_t guest_region_type,
- host_region_type_t host_region_type);
+ addr_t guest_addr_start,
+ addr_t guest_addr_end,
+ shdw_region_type_t shdw_region_type);
-/*
-void init_shadow_region_physical(struct shadow_region * entry,
- addr_t guest_addr_start,
- addr_t guest_addr_end,
- guest_region_type_t guest_region_type,
- addr_t host_addr_start,
- host_region_type_t host_region_type);
-*/
int add_shadow_region_passthrough(struct guest_info * guest_info,
addr_t guest_addr_start,
struct shadow_region * get_shadow_region_by_index(struct shadow_map * map, uint_t index);
-host_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr);
+shdw_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr);
-host_region_type_t get_shadow_addr_type(struct guest_info * info, addr_t guest_addr);
+shdw_region_type_t get_shadow_addr_type(struct guest_info * info, addr_t guest_addr);
addr_t get_shadow_addr(struct guest_info * info, addr_t guest_addr);
// Semantics:
// Semantics:
// Deletions result in splitting
int delete_shadow_region(struct shadow_map * map,
- addr_t guest_start,
- addr_t guest_end);
+ addr_t guest_start,
+ addr_t guest_end);
void print_shadow_map(struct shadow_map * map);
-struct vmm_mem_hook {
- // Called when data is read from a memory page
- int (*read)(addr_t guest_addr, void * dst, uint_t length, void * priv_data);
-
- // Called when data is written to a memory page
- int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data);
-
- void * priv_data;
- struct shadow_region * region;
-};
+struct shadow_region * v3_get_shadow_region(struct guest_info * info, addr_t addr);
+int v3_hook_full_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end,
+ int (*read)(addr_t guest_addr, void * dst, uint_t length, void * priv_data),
+ int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data),
+ void * priv_data);
+int v3_hook_write_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end,
+ addr_t host_addr,
+ int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data),
+ void * priv_data);
-struct vmm_mem_hook * get_mem_hook(struct guest_info * info, addr_t guest_addr);
-
-int hook_guest_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end,
- int (*read)(addr_t guest_addr, void * dst, uint_t length, void * priv_data),
- int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data),
- void * priv_data);
int unhook_guest_mem(struct guest_info * info, addr_t guest_addr);
+const uchar_t * shdw_region_type_to_str(shdw_region_type_t type);
+
int handle_special_page_fault(struct guest_info * info, addr_t fault_addr, addr_t gp_addr, pf_error_t access_info);
+int v3_handle_mem_wr_hook(struct guest_info * info, addr_t guest_va, addr_t guest_pa,
+ struct shadow_region * reg, pf_error_t access_info);
+int v3_handle_mem_full_hook(struct guest_info * info, addr_t guest_va, addr_t guest_pa,
+ struct shadow_region * reg, pf_error_t access_info);
#endif // ! __V3VEE__
