add memory region object for better memory managment

1 files changed, 43 insertions, 0 deletions

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.
  * */