initial commit. working on tasking

1 files changed, 87 insertions, 0 deletions

diff --git a/arch/x86_64/hal/obj.c b/arch/x86_64/hal/obj.c
new file mode 100644
index 0000000..783d2f4
--- /dev/null
+++ b/arch/x86_64/hal/obj.c
@@ -0,0 +1,87 @@
+#include "obj.h"
+#include "arch/x86_64/lock.h"
+#include "hal/obj.h"
+#include "jove.h"
+
+jove_owned_obj_t*
+obj_take(jove_obj_t *obj)
+{
+    take_mutex(&obj->lock);
+    return (jove_owned_obj_t*)obj;
+}
+
+jove_obj_t*
+obj_release(jove_owned_obj_t *obj)
+{
+    release_mutex((atomic_flag*)&obj->lock);
+    return (jove_obj_t*)obj;
+}
+
+void*
+obj_deref(jove_owned_obj_t *obj)
+{
+    return (void*)(((uintptr_t)obj_getvalue(obj)) | 0xFFFF800000000000ULL);
+}
+
+uint8_t
+obj_gettype(jove_owned_obj_t *obj)
+{
+    return obj->type;
+}
+
+void
+obj_settype(jove_owned_obj_t *obj, uint8_t type)
+{
+    obj->type = type;
+}
+
+uintmax_t
+obj_getvalue(jove_owned_obj_t *obj)
+{
+    return obj->value;
+}
+
+void
+obj_setvalue(jove_owned_obj_t *obj, uintmax_t value)
+{
+    obj->value = value & 0x00007FFFFFFFFFFFULL;
+}
+
+jove_obj_t*
+objdir_getlocal(
+        jove_owned_obj_t *objdir_obj, 
+        uint16_t entry)
+{
+    if(objdir_obj->type != JOVE_OBJ_OBJDIR) {
+        reterr(EBADOBJ);
+    }
+    if(entry >= JOVE_OBJDIR_ENTRIES) {
+        reterr(EOOB);
+    }
+
+    jove_objdir_t *objtab = obj_deref(objdir_obj);
+    return &objtab->entries[entry];
+}
+
+jove_owned_obj_t*
+objdir_getobj(
+        jove_owned_obj_t *objdir_obj, 
+        const uint16_t *path, 
+        size_t path_len)
+{
+    if(path_len == 0) {
+        return objdir_obj;
+    }
+    {
+        jove_obj_t *child_locked_objdir = objdir_getlocal(objdir_obj, path[0]);
+        if(child_locked_objdir == NULL) {
+            return 0;
+        }
+
+        jove_owned_obj_t *child_objdir = obj_take(child_locked_objdir);
+        jove_owned_obj_t *target_obj = objdir_getobj(child_objdir, path + 1, path_len - 1);
+        obj_release(child_objdir);
+        return target_obj;
+    }
+}
+