#include <palacios/vmm_mem.h>
#include <palacios/vmm.h>
#include <palacios/vmm_util.h>
-//#include <palacios/vmm_decoder.h>
#include <palacios/vmm_emulator.h>
-
+#define MEM_OFFSET_HCALL 0x1000
struct v3_shadow_region * region);
+static int mem_offset_hypercall(struct guest_info * info, uint_t hcall_id, void * private_data) {
+ info->vm_regs.rbx = info->mem_map.base_region.host_addr;
+
+ return 0;
+}
+
void v3_init_shadow_map(struct guest_info * info) {
v3_shdw_map_t * map = &(info->mem_map);
+ addr_t mem_pages = info->mem_size >> 12;
map->shdw_regions.rb_node = NULL;
map->hook_hva = (addr_t)V3_VAddr(V3_AllocPages(1));
+ // There is an underlying region that contains all of the guest memory
+ map->base_region.guest_start = 0;
+ map->base_region.guest_end = info->mem_size;
+ map->base_region.host_type = SHDW_REGION_ALLOCATED;
+ map->base_region.host_addr = (addr_t)V3_AllocPages(mem_pages);
+
+ v3_register_hypercall(info, MEM_OFFSET_HCALL, mem_offset_hypercall, NULL);
}
void v3_delete_shadow_map(struct guest_info * info) {
-
-
-
-
int handle_special_page_fault(struct guest_info * info,
addr_t fault_gva, addr_t fault_gpa,
pf_error_t access_info)
}
}
- return NULL;
-}
-
+ // There is not registered region, so we check if its a valid address in the base region
-addr_t v3_get_shadow_addr(struct v3_shadow_region * reg, addr_t guest_addr) {
- if ( (reg) &&
- (reg->host_type != SHDW_REGION_FULL_HOOK) &&
- (reg->host_type != SHDW_REGION_INVALID) ) {
- return (guest_addr - reg->guest_start) + reg->host_addr;
- } else {
- PrintDebug("MEM Region Invalid\n");
- return 0;
+ if (guest_addr > info->mem_map.base_region.guest_end) {
+ PrintError("Guest Address Exceeds Base Memory Size (ga=%p), (limit=%p)\n",
+ (void *)guest_addr, (void *)info->mem_map.base_region.guest_end);
+ return NULL;
}
+
+ return &(info->mem_map.base_region);
}
-
void v3_delete_shadow_region(struct guest_info * info, struct v3_shadow_region * reg) {
if (reg != NULL) {
v3_rb_erase(&(reg->tree_node), &(info->mem_map.shdw_regions));
+addr_t v3_get_shadow_addr(struct v3_shadow_region * reg, addr_t guest_addr) {
+ if ( (reg) &&
+ (reg->host_type != SHDW_REGION_FULL_HOOK)) {
+ return (guest_addr - reg->guest_start) + reg->host_addr;
+ } else {
+ PrintDebug("MEM Region Invalid\n");
+ return 0;
+ }
+
+}
+
+
+
void print_shadow_map(struct guest_info * info) {
struct rb_node * node = v3_rb_first(&(info->mem_map.shdw_regions));
- struct v3_shadow_region * reg;
+ struct v3_shadow_region * reg = &(info->mem_map.base_region);
int i = 0;
PrintDebug("Memory Layout:\n");
+
+ PrintDebug("Base Region: 0x%p - 0x%p -> 0x%p\n",
+ (void *)(reg->guest_start),
+ (void *)(reg->guest_end - 1),
+ (void *)(reg->host_addr));
+
do {
reg = rb_entry(node, struct v3_shadow_region, tree_node);
}
-static const uchar_t SHDW_REGION_INVALID_STR[] = "SHDW_REGION_INVALID";
static const uchar_t SHDW_REGION_WRITE_HOOK_STR[] = "SHDW_REGION_WRITE_HOOK";
static const uchar_t SHDW_REGION_FULL_HOOK_STR[] = "SHDW_REGION_FULL_HOOK";
static const uchar_t SHDW_REGION_ALLOCATED_STR[] = "SHDW_REGION_ALLOCATED";
-
-
const uchar_t * v3_shdw_region_type_to_str(v3_shdw_region_type_t type) {
switch (type) {
case SHDW_REGION_WRITE_HOOK:
case SHDW_REGION_ALLOCATED:
return SHDW_REGION_ALLOCATED_STR;
default:
- return SHDW_REGION_INVALID_STR;
+ return (uchar_t *)"SHDW_REGION_INVALID";
}
}