add memory region object for better memory managment

3 files changed, 47 insertions, 1 deletions

diff --git a/api/init.h b/api/init.h
index e92c910..3458ca1 100644
--- a/api/init.h
+++ b/api/init.h
@@ -8,7 +8,7 @@ enum {
     ROOTDIR_DIR_I,
     ROOTDIR_PROCESSORS_I,
     ROOTDIR_PAGEDIR_I,
-    ROOTDIR_UNTYPED_I,
+    ROOTDIR_FREEMEMORY_I,
     ROOTDIR_HWMEMORY_I,
     ROOTDIR_PCB_I,
     ROOTDIR_INTERRUPTS_I,
diff --git a/api/obj.h b/api/obj.h
index 6e9ddc6..29238c1 100644
--- a/api/obj.h
+++ b/api/obj.h
@@ -3,6 +3,8 @@
 
 #include <stdint.h>
 
+typedef unsigned char objtype_t;
+
 enum
 {
     JOVE_OBJ_NONE = 0,
@@ -10,6 +12,7 @@ enum
     JOVE_OBJ_OBJDIR,
     JOVE_OBJ_PAGEDIR,
     JOVE_OBJ_PROCESSOR,
+    JOVE_OBJ_REGION,
     JOVE_OBJ_SHMEMORY,
     JOVE_OBJ_INT_HANDLE,
     JOVE_OBJ_PCB,
diff --git a/api/syscall.h b/api/syscall.h
index 2502621..3f9d115 100644
--- a/api/syscall.h
+++ b/api/syscall.h
@@ -124,6 +124,49 @@ struct syscall_pagedir_unmap
     objpath_part_t none_path[];
 };
 
+/**JOVE_OBJ_REGION syscalls.
+ * */
+
+enum
+{
+    _SYSCALL_REGION_NONE = 0,
+    SYSCALL_REGION_ADDRESS,
+    SYSCALL_REGION_TOTAL_PAGES,
+    SYSCALL_REGION_FREE_PAGES,
+    SYSCALL_REGION_ALLOC,
+    SYSCALL_REGION_SPLIT,
+    SYSCALL_REGION_RELEASE,
+};
+
+#define SYSCALL_PERM_REGION_GETTERS (JOVE_PERM_READ)
+#define SYSCALL_PERM_REGION_ALLOC (JOVE_PERM_WRITE)
+#define SYSCALL_PERM_REGION_SPLIT (JOVE_PERM_WRITE | JOVE_PERM_MUTATE)
+#define SYSCALL_PERM_REGION_MERGE (JOVE_PERM_WRITE | JOVE_PERM_MUTATE)
+
+#define SYSCALL_PERM_REGION_ALLOC_TGT (JOVE_PERM_MUTATE)
+#define SYSCALL_PERM_REGION_SPLIT_TGT (JOVE_PERM_MUTATE)
+#define SYSCALL_PERM_REGION_MERGE_TGT (JOVE_PERM_WRITE | JOVE_PERM_MUTATE)
+
+struct syscall_region_alloc
+{
+    size_t alloc_pages;
+    objpath_part_t dest_pathlen;
+    objpath_part_t dest_path[];
+};
+
+struct syscall_region_split
+{
+    size_t split_pages;
+    objpath_part_t dest_pathlen;
+    objpath_part_t dest_path[];
+};
+
+struct syscall_region_merge
+{
+    objpath_part_t dest_pathlen;
+    objpath_part_t dest_path[];
+};
+
 /**JOVE_OBJ_PCB syscalls.
  * */