+/* (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> */
+/* (c) 2008, The V3VEE Project <http://www.v3vee.org> */
+
+
#include <palacios/vmm_mem.h>
#include <palacios/vmm.h>
#include <palacios/vmm_util.h>
+#include <palacios/vmm_decoder.h>
-extern struct vmm_os_hooks * os_hooks;
-void init_shadow_region(shadow_region_t * entry,
+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,
entry->guest_start = guest_addr_start;
entry->guest_end = guest_addr_end;
entry->host_type = host_region_type;
+ entry->host_addr = 0;
entry->next=entry->prev = NULL;
}
int add_shadow_region_passthrough( struct guest_info * guest_info,
addr_t guest_addr_start,
addr_t guest_addr_end,
- addr_t host_addr_start)
+ addr_t host_addr)
{
- shadow_region_t * entry = os_hooks->malloc(sizeof(shadow_region_t));
+ struct shadow_region * entry = (struct shadow_region *)V3_Malloc(sizeof(struct shadow_region));
init_shadow_region(entry, guest_addr_start, guest_addr_end,
GUEST_REGION_PHYSICAL_MEMORY, HOST_REGION_PHYSICAL_MEMORY);
- entry->host_addr.phys_addr.host_start = host_addr_start;
+ entry->host_addr = host_addr;
return add_shadow_region(&(guest_info->mem_map), entry);
}
+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) {
+
+ struct shadow_region * entry = (struct shadow_region *)V3_Malloc(sizeof(struct shadow_region));
+ struct vmm_mem_hook * hook = (struct vmm_mem_hook *)V3_Malloc(sizeof(struct vmm_mem_hook));
+
+ memset(hook, 0, sizeof(struct vmm_mem_hook));
+
+ hook->read = read;
+ hook->write = write;
+ hook->region = entry;
+ hook->priv_data = priv_data;
+
+
+ init_shadow_region(entry, guest_addr_start, guest_addr_end,
+ GUEST_REGION_PHYSICAL_MEMORY, HOST_REGION_HOOK);
+
+ entry->host_addr = (addr_t)hook;
+
+ return add_shadow_region(&(info->mem_map), entry);
+}
+
+
+struct vmm_mem_hook * get_mem_hook(struct guest_info * info, addr_t guest_addr) {
+ struct shadow_region * region = get_shadow_region_by_addr(&(info->mem_map), guest_addr);
+
+ if (region == NULL) {
+ PrintDebug("Could not find shadow region for addr: %x\n", guest_addr);
+ return NULL;
+ }
+
+ return (struct vmm_mem_hook *)(region->host_addr);
+}
+
+
+/* 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) {
+ 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 {
+ 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 0;
+}
+
+
+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, fault_gva, fault_gpa, access_info, (struct vmm_mem_hook *)(reg->host_addr));
+ default:
+ return -1;
+ }
+
+ return 0;
+
+}
+
+void init_shadow_map(struct guest_info * info) {
+ struct shadow_map * map = &(info->mem_map);
-void init_shadow_map(struct shadow_map * map) {
map->num_regions = 0;
map->head = NULL;
void free_shadow_map(struct shadow_map * map) {
- shadow_region_t * cursor = map->head;
- shadow_region_t * tmp = NULL;
+ struct shadow_region * cursor = map->head;
+ struct shadow_region * tmp = NULL;
while(cursor) {
tmp = cursor;
cursor = cursor->next;
- VMMFree(tmp);
+ V3_Free(tmp);
}
- VMMFree(map);
+ V3_Free(map);
}
int add_shadow_region(struct shadow_map * map,
- shadow_region_t * region)
+ struct shadow_region * region)
{
- shadow_region_t * cursor = map->head;
+ struct shadow_region * cursor = map->head;
PrintDebug("Adding Shadow Region: (0x%x-0x%x)\n", region->guest_start, region->guest_end);
} 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;
-shadow_region_t *get_shadow_region_by_index(struct shadow_map * map,
- uint_t index) {
- shadow_region_t * reg = map->head;
+struct shadow_region *get_shadow_region_by_index(struct shadow_map * map,
+ uint_t index) {
+ struct shadow_region * reg = map->head;
uint_t i = 0;
while (reg) {
}
-shadow_region_t * get_shadow_region_by_addr(struct shadow_map * map,
- addr_t addr) {
- shadow_region_t * reg = map->head;
+struct shadow_region * get_shadow_region_by_addr(struct shadow_map * map,
+ addr_t addr) {
+ struct shadow_region * reg = map->head;
while (reg) {
if ((reg->guest_start <= addr) && (reg->guest_end > addr)) {
}
+host_region_type_t get_shadow_addr_type(struct guest_info * info, addr_t guest_addr) {
+ struct shadow_region * reg = get_shadow_region_by_addr(&(info->mem_map), guest_addr);
+
+ if (!reg) {
+ return HOST_REGION_INVALID;
+ } else {
+ return reg->host_type;
+ }
+}
+
+addr_t get_shadow_addr(struct guest_info * info, addr_t guest_addr) {
+ struct shadow_region * reg = get_shadow_region_by_addr(&(info->mem_map), guest_addr);
+
+ if (!reg) {
+ return 0;
+ } else {
+ return (guest_addr - reg->guest_start) + reg->host_addr;
+ }
+}
+
host_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr) {
- shadow_region_t * reg = get_shadow_region_by_addr(map, guest_addr);
+ struct shadow_region * reg = get_shadow_region_by_addr(map, guest_addr);
if (!reg) {
// No mapping exists
} else {
switch (reg->host_type) {
case HOST_REGION_PHYSICAL_MEMORY:
- *host_addr = (guest_addr - reg->guest_start) + reg->host_addr.phys_addr.host_start;
+ *host_addr = (guest_addr - reg->guest_start) + reg->host_addr;
return reg->host_type;
case HOST_REGION_MEMORY_MAPPED_DEVICE:
case HOST_REGION_UNALLOCATED:
void print_shadow_map(struct shadow_map * map) {
- shadow_region_t * cur = map->head;
+ struct shadow_region * cur = map->head;
int i = 0;
PrintDebug("Memory Layout (regions: %d) \n", map->num_regions);
if (cur->host_type == HOST_REGION_PHYSICAL_MEMORY ||
cur->host_type == HOST_REGION_UNALLOCATED ||
cur->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE) {
- PrintDebug("0x%x", cur->host_addr.phys_addr.host_start);
+ PrintDebug("0x%x", cur->host_addr);
}
PrintDebug("(%s)\n",
cur->host_type == HOST_REGION_PHYSICAL_MEMORY ? "HOST_REGION_PHYSICAL_MEMORY" :
cur->host_type == HOST_REGION_UNALLOCATED ? "HOST_REGION_UNALLOACTED" :
- cur->host_type == HOST_REGION_NOTHING ? "HOST_REGION_NOTHING" :
+ cur->host_type == HOST_REGION_HOOK ? "HOST_REGION_HOOK" :
cur->host_type == HOST_REGION_MEMORY_MAPPED_DEVICE ? "HOST_REGION_MEMORY_MAPPED_DEVICE" :
cur->host_type == HOST_REGION_REMOTE ? "HOST_REGION_REMOTE" :
cur->host_type == HOST_REGION_SWAPPED ? "HOST_REGION_SWAPPED" :
