CTAOS v3

SysCore/memory/pte.c

@@ -0,0 +1,26 @@
+#include <pte.h>
+
+void pt_entry_add_attrib (pt_entry* entry, unsigned mask) {
+      *entry |= mask;
+}
+
+ void pt_entry_del_attrib (pt_entry* entry, unsigned mask) {
+      *entry &= ~mask;
+}
+
+ void pt_entry_set_frame (pt_entry* entry, unsigned address) {
+      *entry &= ~_I86_PTE_FRAME;
+      *entry |= address & _I86_PTE_FRAME;
+ }
+ 
+ unsigned pt_entry_get_frame (pt_entry entry) {
+      return entry&_I86_PTE_FRAME;
+}
+
+ unsigned char pt_entry_is_present (pt_entry entry) {
+      return ( (entry & _I86_PTE_PRESENT) > 0 );
+ }
+ 
+ unsigned char pt_entry_is_writable (pt_entry entry) {
+      return ( (entry & _I86_PTE_WRITABLE) > 0 );
+}