X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_mem.c;h=b4a181f490b227dcece5242696e1889080438626;hb=8c767ddb04d3ac42d080d9f9f5f40196d6f8f217;hp=7c2a53a3eb78b69f660e7c54748c7db44c47aa05;hpb=a1e0475bbefa968791679c5e71232ddca522868b;p=palacios.git

diff --git a/palacios/src/palacios/vmm_mem.c b/palacios/src/palacios/vmm_mem.c
index 7c2a53a..b4a181f 100644
--- a/palacios/src/palacios/vmm_mem.c
+++ b/palacios/src/palacios/vmm_mem.c
@@ -1,3 +1,22 @@
+/* 
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National 
+ * Science Foundation and the Department of Energy.  
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico.  You can find out more at 
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> 
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org> 
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software.  You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
 #include <palacios/vmm_mem.h>
 #include <palacios/vmm.h>
 #include <palacios/vmm_util.h>
@@ -62,7 +81,7 @@ 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);
+    PrintDebug("Could not find shadow region for addr: %p\n", (void *)guest_addr);
     return NULL;
   }
 
@@ -70,32 +89,42 @@ struct vmm_mem_hook * get_mem_hook(struct guest_info * info, addr_t guest_addr)
 }
 
 
-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) 
+{
 
-  if (access_info.write == 1) {
-    void * src = NULL;
-    uint_t length = 0;
-    PrintDebug("Memory hook write\n");
-    return -1;
+  // emulate and then dispatch 
+  // or dispatch and emulate
 
-    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;
   }
@@ -136,7 +165,8 @@ int add_shadow_region(struct shadow_map * map,
 {
   struct shadow_region * cursor = map->head;
 
-  PrintDebug("Adding Shadow Region: (0x%x-0x%x)\n", region->guest_start, region->guest_end);
+  PrintDebug("Adding Shadow Region: (0x%p-0x%p)\n", 
+	     (void *)region->guest_start, (void *)region->guest_end);
 
   if ((!cursor) || (cursor->guest_start >= region->guest_end)) {
     region->prev = NULL;
@@ -174,7 +204,6 @@ int add_shadow_region(struct shadow_map * map,
     } 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;
@@ -196,7 +225,7 @@ int delete_shadow_region(struct shadow_map * map,
 
 
 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;
 
@@ -212,7 +241,7 @@ struct shadow_region *get_shadow_region_by_index(struct shadow_map *  map,
 
 
 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) {
@@ -278,7 +307,8 @@ void print_shadow_map(struct shadow_map * map) {
   PrintDebug("Memory Layout (regions: %d) \n", map->num_regions);
 
   while (cur) {
-    PrintDebug("%d:  0x%x - 0x%x (%s) -> ", i, cur->guest_start, cur->guest_end - 1,
+    PrintDebug("%d:  0x%p - 0x%p (%s) -> ", i, 
+	       (void *)cur->guest_start, (void *)(cur->guest_end - 1),
 	       cur->guest_type == GUEST_REGION_PHYSICAL_MEMORY ? "GUEST_REGION_PHYSICAL_MEMORY" :
 	       cur->guest_type == GUEST_REGION_NOTHING ? "GUEST_REGION_NOTHING" :
 	       cur->guest_type == GUEST_REGION_MEMORY_MAPPED_DEVICE ? "GUEST_REGION_MEMORY_MAPPED_DEVICE" :
@@ -286,7 +316,7 @@ void print_shadow_map(struct shadow_map * map) {
     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);
+      PrintDebug("0x%p", (void *)(cur->host_addr));
     }
     PrintDebug("(%s)\n",
 	       cur->host_type == HOST_REGION_PHYSICAL_MEMORY ? "HOST_REGION_PHYSICAL_MEMORY" :