Changeset 1ee9ced in mainline for arch/amd64/src/interrupt.c

Timestamp:

2006-03-16T16:33:48Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

6eb103c

Parents:

dabe6333

Message:

Move amd64's ident_page_mapper() and page_fault() to page.h.

File:

• arch/amd64/src/interrupt.c (modified) (3 diffs)

arch/amd64/src/interrupt.c

@@ -43 +43 @@
 #include <proc/thread.h>
 
-static void print_info_errcode(int n, istate_t *istate)
+void print_info_errcode(int n, istate_t *istate)
 {
         char *symbol;
@@ -93 +93 @@
 }
 
-
 void nm_fault(int n, istate_t *istate)
 {
@@ -101 +100 @@
         panic("fpu fault");
 #endif
-}
-
-
-/* Definitions for identic page mapper */
-pte_t helper_ptl1[512] __attribute__((aligned (PAGE_SIZE)));
-pte_t helper_ptl2[512] __attribute__((aligned (PAGE_SIZE)));
-pte_t helper_ptl3[512] __attribute__((aligned (PAGE_SIZE)));
-extern pte_t ptl_0; /* From boot.S */
-
-#define PTL1_PRESENT(ptl0, page) (!(GET_PTL1_FLAGS_ARCH(ptl0, PTL0_INDEX_ARCH(page)) & PAGE_NOT_PRESENT))
-#define PTL2_PRESENT(ptl1, page) (!(GET_PTL2_FLAGS_ARCH(ptl1, PTL1_INDEX_ARCH(page)) & PAGE_NOT_PRESENT))
-#define PTL3_PRESENT(ptl2, page) (!(GET_PTL3_FLAGS_ARCH(ptl2, PTL2_INDEX_ARCH(page)) & PAGE_NOT_PRESENT))
-
-#define PTL1_ADDR(ptl0, page) ((pte_t *)PA2KA(GET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page))))
-#define PTL2_ADDR(ptl1, page) ((pte_t *)PA2KA(GET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page))))
-#define PTL3_ADDR(ptl2, page) ((pte_t *)PA2KA(GET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page))))
-
-#define SETUP_PTL1(ptl0, page, tgt)  {  \
-        SET_PTL1_ADDRESS_ARCH(ptl0, PTL0_INDEX_ARCH(page), (__address)KA2PA(tgt)); \
-        SET_PTL1_FLAGS_ARCH(ptl0, PTL0_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
-    }
-#define SETUP_PTL2(ptl1, page, tgt)  {  \
-        SET_PTL2_ADDRESS_ARCH(ptl1, PTL1_INDEX_ARCH(page), (__address)KA2PA(tgt)); \
-        SET_PTL2_FLAGS_ARCH(ptl1, PTL1_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
-    }
-#define SETUP_PTL3(ptl2, page, tgt)  {  \
-        SET_PTL3_ADDRESS_ARCH(ptl2, PTL2_INDEX_ARCH(page), (__address)KA2PA(tgt)); \
-        SET_PTL3_FLAGS_ARCH(ptl2, PTL2_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
-    }
-#define SETUP_FRAME(ptl3, page, tgt)  { \
-        SET_FRAME_ADDRESS_ARCH(ptl3, PTL3_INDEX_ARCH(page), (__address)KA2PA(tgt)); \
-        SET_FRAME_FLAGS_ARCH(ptl3, PTL3_INDEX_ARCH(page), PAGE_WRITE | PAGE_EXEC); \
-    }
-
-/** Identic page mapper
- *
- * We need to map whole physical memory identically before the page subsystem
- * is initializaed. This thing clears page table and fills in the specific
- * items.
- */
-void ident_page_fault(int n, istate_t *istate)
-{
-        __address page;
-        static __address oldpage = 0;
-        pte_t *aptl_1, *aptl_2, *aptl_3;
-
-        page = read_cr2();
-        if (oldpage) {
-                /* Unmap old address */
-                aptl_1 = PTL1_ADDR(&ptl_0, oldpage);
-                aptl_2 = PTL2_ADDR(aptl_1, oldpage);
-                aptl_3 = PTL3_ADDR(aptl_2, oldpage);
-
-                SET_FRAME_FLAGS_ARCH(aptl_3, PTL3_INDEX_ARCH(oldpage), PAGE_NOT_PRESENT);
-                if (aptl_3 == helper_ptl3)
-                        SET_PTL3_FLAGS_ARCH(aptl_2, PTL2_INDEX_ARCH(oldpage), PAGE_NOT_PRESENT);
-                if (aptl_2 == helper_ptl2)
-                        SET_PTL2_FLAGS_ARCH(aptl_1, PTL1_INDEX_ARCH(oldpage), PAGE_NOT_PRESENT);
-                if (aptl_1 == helper_ptl1)
-                        SET_PTL1_FLAGS_ARCH(&ptl_0, PTL0_INDEX_ARCH(oldpage), PAGE_NOT_PRESENT);
-        }
-        if (PTL1_PRESENT(&ptl_0, page))
-                aptl_1 = PTL1_ADDR(&ptl_0, page);
-        else {
-                SETUP_PTL1(&ptl_0, page, helper_ptl1);
-                aptl_1 = helper_ptl1;
-        }
-            
-        if (PTL2_PRESENT(aptl_1, page)) 
-                aptl_2 = PTL2_ADDR(aptl_1, page);
-        else {
-                SETUP_PTL2(aptl_1, page, helper_ptl2);
-                aptl_2 = helper_ptl2;
-        }
-
-        if (PTL3_PRESENT(aptl_2, page))
-                aptl_3 = PTL3_ADDR(aptl_2, page);
-        else {
-                SETUP_PTL3(aptl_2, page, helper_ptl3);
-                aptl_3 = helper_ptl3;
-        }
-        
-        SETUP_FRAME(aptl_3, page, page);
-
-        oldpage = page;
-}
-
-void page_fault(int n, istate_t *istate)
-{
-        __address page;
-        
-        page = read_cr2();
-        if (!as_page_fault(page)) {
-                print_info_errcode(n, istate);
-                printf("Page fault address: %Q\n", page);
-                panic("page fault\n");
-        }
 }