Changeset da1bafb in mainline for kernel/genarch/include/mm/page_pt.h

Timestamp:

2010-05-24T18:57:31Z (14 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

0095368

Parents:

666f492

Message:

major code revision

• replace spinlocks taken with interrupts disabled with irq_spinlocks
• change spacing (not indendation) to be tab-size independent
• use unsigned integer types where appropriate (especially bit flags)
• visual separation
• remove argument names in function prototypes
• string changes
• correct some formating directives
• replace various cryptic single-character variables (t, a, m, c, b, etc.) with proper identifiers (thread, task, timeout, as, itm, itc, etc.)
• unify some assembler constructs
• unused page table levels are now optimized out in compile time
• replace several ints (with boolean semantics) with bools
• use specifically sized types instead of generic types where appropriate (size_t, uint32_t, btree_key_t)
• improve comments
• split asserts with conjuction into multiple independent asserts

File:

• kernel/genarch/include/mm/page_pt.h (modified) (2 diffs)

kernel/genarch/include/mm/page_pt.h

@@ -37 +37 @@
  * Architectures that use hierarchical page tables
  * are supposed to implement *_ARCH macros.
+ *
  */
 
@@ -52 +53 @@
  * Number of entries in each level.
  */
-#define PTL0_ENTRIES                    PTL0_ENTRIES_ARCH
-#define PTL1_ENTRIES                    PTL1_ENTRIES_ARCH
-#define PTL2_ENTRIES                    PTL2_ENTRIES_ARCH
-#define PTL3_ENTRIES                    PTL3_ENTRIES_ARCH
+#define PTL0_ENTRIES  PTL0_ENTRIES_ARCH
+#define PTL1_ENTRIES  PTL1_ENTRIES_ARCH
+#define PTL2_ENTRIES  PTL2_ENTRIES_ARCH
+#define PTL3_ENTRIES  PTL3_ENTRIES_ARCH
 
 /* Table sizes in each level */
-#define PTL0_SIZE                       PTL0_SIZE_ARCH
-#define PTL1_SIZE                       PTL1_SIZE_ARCH
-#define PTL2_SIZE                       PTL2_SIZE_ARCH
-#define PTL3_SIZE                       PTL3_SIZE_ARCH
+#define PTL0_SIZE  PTL0_SIZE_ARCH
+#define PTL1_SIZE  PTL1_SIZE_ARCH
+#define PTL2_SIZE  PTL2_SIZE_ARCH
+#define PTL3_SIZE  PTL3_SIZE_ARCH
 
 /*
  * These macros process vaddr and extract those portions
  * of it that function as indices to respective page tables.
+ *
  */
-#define PTL0_INDEX(vaddr)               PTL0_INDEX_ARCH(vaddr)
-#define PTL1_INDEX(vaddr)               PTL1_INDEX_ARCH(vaddr)
-#define PTL2_INDEX(vaddr)               PTL2_INDEX_ARCH(vaddr)
-#define PTL3_INDEX(vaddr)               PTL3_INDEX_ARCH(vaddr)
+#define PTL0_INDEX(vaddr)  PTL0_INDEX_ARCH(vaddr)
+#define PTL1_INDEX(vaddr)  PTL1_INDEX_ARCH(vaddr)
+#define PTL2_INDEX(vaddr)  PTL2_INDEX_ARCH(vaddr)
+#define PTL3_INDEX(vaddr)  PTL3_INDEX_ARCH(vaddr)
 
-#define SET_PTL0_ADDRESS(ptl0)          SET_PTL0_ADDRESS_ARCH(ptl0)
+#define SET_PTL0_ADDRESS(ptl0)  SET_PTL0_ADDRESS_ARCH(ptl0)
 
 /*
  * These macros traverse the 4-level tree of page tables,
  * each descending by one level.
+ *
  */
-#define GET_PTL1_ADDRESS(ptl0, i)       GET_PTL1_ADDRESS_ARCH(ptl0, i)
-#define GET_PTL2_ADDRESS(ptl1, i)       GET_PTL2_ADDRESS_ARCH(ptl1, i)
-#define GET_PTL3_ADDRESS(ptl2, i)       GET_PTL3_ADDRESS_ARCH(ptl2, i)
-#define GET_FRAME_ADDRESS(ptl3, i)      GET_FRAME_ADDRESS_ARCH(ptl3, i)
+#define GET_PTL1_ADDRESS(ptl0, i)   GET_PTL1_ADDRESS_ARCH(ptl0, i)
+#define GET_PTL2_ADDRESS(ptl1, i)   GET_PTL2_ADDRESS_ARCH(ptl1, i)
+#define GET_PTL3_ADDRESS(ptl2, i)   GET_PTL3_ADDRESS_ARCH(ptl2, i)
+#define GET_FRAME_ADDRESS(ptl3, i)  GET_FRAME_ADDRESS_ARCH(ptl3, i)
 
 /*
  * These macros are provided to change the shape of the 4-level tree of page
  * tables on respective level.
+ *
  */
-#define SET_PTL1_ADDRESS(ptl0, i, a)    SET_PTL1_ADDRESS_ARCH(ptl0, i, a)
-#define SET_PTL2_ADDRESS(ptl1, i, a)    SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
-#define SET_PTL3_ADDRESS(ptl2, i, a)    SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
-#define SET_FRAME_ADDRESS(ptl3, i, a)   SET_FRAME_ADDRESS_ARCH(ptl3, i, a)
+#define SET_PTL1_ADDRESS(ptl0, i, a)   SET_PTL1_ADDRESS_ARCH(ptl0, i, a)
+#define SET_PTL2_ADDRESS(ptl1, i, a)   SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
+#define SET_PTL3_ADDRESS(ptl2, i, a)   SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
+#define SET_FRAME_ADDRESS(ptl3, i, a)  SET_FRAME_ADDRESS_ARCH(ptl3, i, a)
 
 /*
  * These macros are provided to query various flags within the page tables.
+ *
  */
-#define GET_PTL1_FLAGS(ptl0, i)         GET_PTL1_FLAGS_ARCH(ptl0, i)
-#define GET_PTL2_FLAGS(ptl1, i)         GET_PTL2_FLAGS_ARCH(ptl1, i)
-#define GET_PTL3_FLAGS(ptl2, i)         GET_PTL3_FLAGS_ARCH(ptl2, i)
-#define GET_FRAME_FLAGS(ptl3, i)        GET_FRAME_FLAGS_ARCH(ptl3, i)
+#define GET_PTL1_FLAGS(ptl0, i)   GET_PTL1_FLAGS_ARCH(ptl0, i)
+#define GET_PTL2_FLAGS(ptl1, i)   GET_PTL2_FLAGS_ARCH(ptl1, i)
+#define GET_PTL3_FLAGS(ptl2, i)   GET_PTL3_FLAGS_ARCH(ptl2, i)
+#define GET_FRAME_FLAGS(ptl3, i)  GET_FRAME_FLAGS_ARCH(ptl3, i)
 
 /*
  * These macros are provided to set/clear various flags within the page tables.
+ *
  */
-#define SET_PTL1_FLAGS(ptl0, i, x)      SET_PTL1_FLAGS_ARCH(ptl0, i, x)
-#define SET_PTL2_FLAGS(ptl1, i, x)      SET_PTL2_FLAGS_ARCH(ptl1, i, x)
-#define SET_PTL3_FLAGS(ptl2, i, x)      SET_PTL3_FLAGS_ARCH(ptl2, i, x)
-#define SET_FRAME_FLAGS(ptl3, i, x)     SET_FRAME_FLAGS_ARCH(ptl3, i, x)
+#define SET_PTL1_FLAGS(ptl0, i, x)   SET_PTL1_FLAGS_ARCH(ptl0, i, x)
+#define SET_PTL2_FLAGS(ptl1, i, x)   SET_PTL2_FLAGS_ARCH(ptl1, i, x)
+#define SET_PTL3_FLAGS(ptl2, i, x)   SET_PTL3_FLAGS_ARCH(ptl2, i, x)
+#define SET_FRAME_FLAGS(ptl3, i, x)  SET_FRAME_FLAGS_ARCH(ptl3, i, x)
 
 /*
  * Macros for querying the last-level PTEs.
+ *
  */
-#define PTE_VALID(p)            PTE_VALID_ARCH((p))
-#define PTE_PRESENT(p)          PTE_PRESENT_ARCH((p))
-#define PTE_GET_FRAME(p)        PTE_GET_FRAME_ARCH((p))
-#define PTE_READABLE(p)         1
-#define PTE_WRITABLE(p)         PTE_WRITABLE_ARCH((p))
-#define PTE_EXECUTABLE(p)       PTE_EXECUTABLE_ARCH((p))
+#define PTE_VALID(p)       PTE_VALID_ARCH((p))
+#define PTE_PRESENT(p)     PTE_PRESENT_ARCH((p))
+#define PTE_GET_FRAME(p)   PTE_GET_FRAME_ARCH((p))
+#define PTE_READABLE(p)    1
+#define PTE_WRITABLE(p)    PTE_WRITABLE_ARCH((p))
+#define PTE_EXECUTABLE(p)  PTE_EXECUTABLE_ARCH((p))
 
 extern as_operations_t as_pt_operations;
 extern page_mapping_operations_t pt_mapping_operations;
 
-extern void page_mapping_insert_pt(as_t *as, uintptr_t page, uintptr_t frame,
-    int flags);
-extern pte_t *page_mapping_find_pt(as_t *as, uintptr_t page);
+extern void page_mapping_insert_pt(as_t *, uintptr_t, uintptr_t, unsigned int);
+extern pte_t *page_mapping_find_pt(as_t *, uintptr_t);
 
 #endif