stos: hal: Add virtual address space helpers

Signed-off-by: Chloe M. <chloe@mensia.org>
2026-06-22 21:46:51 +00:00
parent 53aea637b0
commit 532e46c62f
3 changed files with 93 additions and 0 deletions
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description:  MD virtual address space
+ * Author:       Chloe M.
+ */
+
+#ifndef _MACHINE_VAS_H_
+#define _MACHINE_VAS_H_ 1
+
+#include <stdef.h>
+
+/*
+ * Represents a virtual address space
+ *
+ * @Cr3: Control register 3 value
+ */
+typedef struct {
+    UPTR Cr3;
+} MMU_VAS;
+
+#endif  /* !_MACHINE_VAS_H_ */
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description:  MMU HAL layer
+ * Author:       Chloe M.
+ */
+
+#ifndef _HAL_MMU_H_
+#define _HAL_MMU_H_ 1
+
+#include <stdef.h>
+#include <machine/vas.h>
+
+/*
+ * Read the current virtual address space
+ *
+ * @Result: Result is written here
+ */
+VOID HalMmuReadVas(MMU_VAS *Result);
+
+/*
+ * Write a new virtual address space
+ *
+ * @Vas: Virtual address space to write
+ */
+VOID HalMmuWriteVas(MMU_VAS *Vas);
+
+#endif  /* !_HAL_MMU_H_ */