Code-base clean-up and refactoring (#47)

[lunaix-os.git] / lunaix-os / arch / generic / procvm.c

diff --git a/lunaix-os/arch/generic/procvm.c b/lunaix-os/arch/generic/procvm.c
new file mode 100644 (file)
index 0000000..91c4845
--- /dev/null
+++ b/lunaix-os/arch/generic/procvm.c
@@ -0,0 +1,36 @@
+#include <lunaix/mm/procvm.h>
+#include <lunaix/mm/pagetable.h>
+#include <lunaix/mm/page.h>
+
+_default void
+procvm_link_kernel(ptr_t dest_mnt)
+{
+    pte_t *ptep_smx, *src_smx;
+    struct leaflet* leaflet;
+    unsigned int i;
+    
+    i = va_level_index(KERNEL_RESIDENT, L0T_SIZE);
+    ptep_smx = mkl1tep_va(VMS_SELF, dest_mnt);
+    src_smx  = mkl0tep_va(VMS_SELF, 0);
+
+    for (; i < LEVEL_SIZE; i++)
+    {
+        pte_t* ptep = &ptep_smx[i];
+        pte_t  pte  = pte_at(&src_smx[i]);
+        if (lntep_implie_vmnts(ptep, L0T_SIZE)) {
+            continue;
+        }
+
+        // sanity check
+        leaflet = pte_leaflet_aligned(pte);
+        assert(leaflet_refcount(leaflet) > 0);
+
+        set_pte(ptep, pte);
+    }
+}
+
+_default void
+procvm_unlink_kernel()
+{
+    // nothing to do here.
+}
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