add paging support

1 files changed, 27 insertions, 2 deletions

diff --git a/arch/x86_64/hal/obj.c b/arch/x86_64/hal/obj.c
index c5d5c69..b8924a6 100644
--- a/arch/x86_64/hal/obj.c
+++ b/arch/x86_64/hal/obj.c
@@ -37,6 +37,12 @@ obj_gettype(jove_owned_obj_t *obj)
     return obj->locked.type;
 }
 
+uint8_t
+obj_peektype(jove_obj_t obj)
+{
+    return obj.type;
+}
+
 void
 obj_settype(jove_owned_obj_t *obj, uint8_t type)
 {
@@ -55,6 +61,24 @@ obj_setvalue(jove_owned_obj_t *obj, uintmax_t value)
     obj->locked.value = value & 0x00007FFFFFFFFFFFULL;
 }
 
+jove_obj_t
+objdir_peeklocal(
+        jove_owned_obj_t *objdir_obj, 
+        uint16_t entry)
+{
+    if(obj_gettype_linked(objdir_obj) != JOVE_OBJ_OBJDIR) {
+        errno = EBADOBJ;
+        return (jove_obj_t) { 0 };
+    }
+    if(entry >= JOVE_OBJDIR_ENTRIES) {
+        errno = EBADPATH;
+        return (jove_obj_t) { 0 };
+    }
+
+    jove_objdir_t *objtab = obj_deref_linked(objdir_obj);
+    return objtab->entries[entry];
+}
+
 jove_owned_obj_t*
 objdir_getlocal(
         jove_owned_obj_t *objdir_obj, 
@@ -64,7 +88,7 @@ objdir_getlocal(
         reterr(EBADOBJ);
     }
     if(entry >= JOVE_OBJDIR_ENTRIES) {
-        reterr(EOOB);
+        reterr(EBADPATH);
     }
 
     jove_objdir_t *objtab = obj_deref_linked(objdir_obj);
@@ -81,9 +105,10 @@ objdir_getobj(
         return objdir_obj;
     }
     {
+        errno = 0;
         jove_owned_obj_t *child_objdir = objdir_getlocal(objdir_obj, path[0]);
         if(child_objdir == 0) {
-            return 0;
+            reterr(EBADPATH);
         }
 
         jove_owned_obj_t *target_obj = objdir_getobj(child_objdir, path + 1, path_len - 1);