From 7f350e7ee1c2c38e5ac0b6c22c17388f6c78f0b5 Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Wed, 10 Sep 2025 13:28:28 -0400
Subject: refactor paging code. regression on loading init program

---
 lib/untyped-retype.c | 38 +++++++++++++++++++++++++++++++++++---
 lib/untyped.c        | 16 ++++++++++++++++
 2 files changed, 51 insertions(+), 3 deletions(-)
 create mode 100644 lib/untyped.c

(limited to 'lib')

diff --git a/lib/untyped-retype.c b/lib/untyped-retype.c
index 70fb4d2..526f19e 100644
--- a/lib/untyped-retype.c
+++ b/lib/untyped-retype.c
@@ -1,11 +1,43 @@
-#include <object.h>
-#include <memory.h>
+#include "object.h"
+#include "memory.h"
 #include <stddef.h>
-#include <error.h>
+#include "error.h"
+#include "string.h"
 
 int
 ko_untyped_retype_objdir(objdir_entry_t *target)
 {
     size_t *untyped = ko_entry_data(target);
     if(*untyped != 0x1000) return -KE_BADSIZE;
+
+    objdir_t *objdir = (objdir_t*)untyped;
+    memset(objdir, 0, 0x1000);
+
+    objdir->self = (objdir_entry_t) {
+        .type = KO_OBJECT_DIRECTORY,
+        .data = target->data
+    };
+    *target = (objdir_entry_t) {
+        .type = KO_OBJECT_DIRECTORY,
+        .lock = 0,
+        .extra = 0,
+        .data = objdir->self.data
+    };
+    return 0;
+}
+
+int
+ko_untyped_retype_message(objdir_entry_t *target, uintptr_t vptr)
+{
+    size_t *untyped = ko_entry_data(target);
+    if(*untyped != 0x1000) return -KE_BADSIZE;
+
+    memset(untyped, 0, KO_MESSAGE_BYTES);
+    *target = (objdir_entry_t) {
+        .type = KO_OBJECT_DIRECTORY,
+        .lock = 0,
+        .extra = 0,
+        .data = target->data
+    };
+    return 0;
 }
diff --git a/lib/untyped.c b/lib/untyped.c
new file mode 100644
index 0000000..8a20f63
--- /dev/null
+++ b/lib/untyped.c
@@ -0,0 +1,16 @@
+#include "include/object.h"
+#include "error.h"
+
+int
+ko_untyped_split(objdir_entry_t *target, objdir_entry_t *dest, size_t bytes)
+{
+    size_t *untyped = ko_entry_data(target);
+    if(*untyped <= bytes) return KE_TOOSMALL;
+
+    *untyped -= bytes;
+    dest->data = target->data + *untyped;
+    *(size_t*)ko_entry_data(dest) = bytes;
+    dest->type = KO_MEMORY_UNTYPED;
+
+    return 0;
+}
-- 
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