Changeset 567807b1 in mainline for arch/ia32/include/mm/page.h

Timestamp:

2006-05-24T17:03:29Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

8d6bc2d5

Parents:

82da5f5

Message:

Modify the hierarchy of page fault handlers to pass access mode that caused the fault.
Architectures are required to pass either PF_ACCESS_READ, PF_ACCESS_WRITE or PF_ACCESS_EXEC
to as_page_fault(), depending on the cause of the fault.

File:

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

arch/ia32/include/mm/page.h

@@ -91 +91 @@
 #include <typedefs.h>
 
+/* Page fault error codes. */
+
+/** When bit on this position is 0, the page fault was caused by a not-present page. */
+#define PFERR_CODE_P            (1<<0)
+
+/** When bit on this position is 1, the page fault was caused by a write. */
+#define PFERR_CODE_RW           (1<<1)
+
+/** When bit on this position is 1, the page fault was caused in user mode. */
+#define PFERR_CODE_US           (1<<2)
+
+/** When bit on this position is 1, a reserved bit was set in page directory. */ 
+#define PFERR_CODE_RSVD         (1<<3)  
+
 /** Page Table Entry. */
 struct page_specifier {
@@ -139 +153 @@
 
 extern void page_arch_init(void);
+extern void page_fault(int n, istate_t *istate);
 
 #endif /* __ASM__ */