CTAOS v4

SysCore/memory/lib/pte.c

@@ -0,0 +1,25 @@
+#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 = (*entry & ~_I86_PTE_FRAME) | address;
+ }
+ 
+ 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);
+ }
+ 
+ unsigned char pt_entry_is_writable (pt_entry entry) {
+      return (entry & _I86_PTE_WRITABLE);
+}