X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/9fe5e02cf615ad121c4460fbaaac2787d1e09c0e..05b7549a0f980efa33265a091a5174a78851ce05:/lunaix-os/includes/lunaix/mm/page.h?ds=sidebyside

diff --git a/lunaix-os/includes/lunaix/mm/page.h b/lunaix-os/includes/lunaix/mm/page.h
index e97de1d..c202184 100644
--- a/lunaix-os/includes/lunaix/mm/page.h
+++ b/lunaix-os/includes/lunaix/mm/page.h
@@ -3,13 +3,16 @@
 #include <stdint.h>
 #include <lunaix/constants.h>
 
-#define PG_SIZE_BITS              12
+#define PG_SIZE_BITS                12
+#define PG_SIZE                     (1 << PG_SIZE_BITS)
 #define PG_INDEX_BITS               10
 
 #define PG_MAX_ENTRIES              1024U
 #define PG_LAST_TABLE               PG_MAX_ENTRIES - 1
 #define PG_FIRST_TABLE              0
 
+#define PTE_NULL                    0
+
 #define P2V(paddr)          ((uintptr_t)(paddr)  +  HIGHER_HLF_BASE)
 #define V2P(vaddr)          ((uintptr_t)(vaddr)  -  HIGHER_HLF_BASE)
 
@@ -43,6 +46,9 @@
 #define PG_ENTRY_FLAGS(entry)   (entry & 0xFFFU)
 #define PG_ENTRY_ADDR(entry)   (entry & ~0xFFFU)
 
+#define HAS_FLAGS(entry, flags)             ((PG_ENTRY_FLAGS(entry) & (flags)) == flags)
+#define CONTAINS_FLAGS(entry, flags)        (PG_ENTRY_FLAGS(entry) & (flags))
+
 #define PG_PREM_R              PG_PRESENT
 #define PG_PREM_RW             PG_PRESENT | PG_WRITE
 #define PG_PREM_UR             PG_PRESENT | PG_ALLOW_USER
@@ -78,5 +84,12 @@ typedef struct {
     uint16_t flags;
 } v_mapping;
 
+typedef uint32_t x86_pte_t;
+typedef struct
+{
+    x86_pte_t entry[PG_MAX_ENTRIES];
+} __attribute__((packed)) x86_page_table;
+
+
 
 #endif /* __LUNAIX_PAGE_H */