Changeset 992bbb97 in mainline for arch/ia32/include/mm/page.h

Timestamp:

2005-06-29T20:53:18Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

ff9f858

Parents:

b60a22c

Message:

Start with generic 4-level page table interface.

Usual cleanup.

File:

• arch/ia32/include/mm/page.h (modified) (2 diffs)

arch/ia32/include/mm/page.h

@@ -38 +38 @@
 #define PA2KA(x)        ((x) + 0x80000000)
 
+/*
+ * Implementation of generic 4-level page table interface.
+ * IA-32 has 2-level page tables, so PTL1 and PTL2 are left out.
+ */
+#define PTL0_INDEX_ARCH(vaddr)  (((vaddr)>>22)&0x3ff)
+#define PTL1_INDEX_ARCH(vaddr)  0
+#define PTL2_INDEX_ARCH(vaddr)  0
+#define PTL3_INDEX_ARCH(vaddr)  (((vaddr)>>12)&0x3ff)
+
+#define GET_PTL1_ADDRESS_ARCH(ptl0, i)          ((pte_t *)((((pte_t *)(ptl0))[(i)].frame_address)<<12))
+#define GET_PTL2_ADDRESS_ARCH(ptl1, i)          (ptl1)
+#define GET_PTL3_ADDRESS_ARCH(ptl2, i)          (ptl2)
+#define GET_FRAME_ADDRESS_ARCH(ptl3, i)         ((__address)((((pte_t *)(ptl3))[(i)].frame_address)<<12))
+
+
 struct page_specifier {
         unsigned present : 1;
@@ -51 +66 @@
 } __attribute__ ((packed));
 
+typedef struct page_specifier   pte_t;
+
 extern void page_arch_init(void);