Changeset c23502d in mainline for generic/src/mm/as.c

Timestamp:

2006-03-15T23:54:19Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

2d5a54f3

Parents:

649799a

Message:

Support only anonymous address space areas.

File:

• generic/src/mm/as.c (modified) (4 diffs)

generic/src/mm/as.c

@@ -120 +120 @@
  *
  * @param as Target address space.
- * @param type Type of area.
+ * @param flags Flags of the area.
  * @param size Size of area in multiples of PAGE_SIZE.
  * @param base Base address of area.
@@ -126 +126 @@
  * @return Address space area on success or NULL on failure.
  */
-as_area_t *as_area_create(as_t *as, as_area_type_t type, size_t size, __address base)
+as_area_t *as_area_create(as_t *as, int flags, size_t size, __address base)
 {
         ipl_t ipl;
@@ -146 +146 @@
         
         link_initialize(&a->link);                      
-        a->type = type;
+        a->flags = flags;
         a->size = size;
         a->base = base;
@@ -327 +327 @@
         int flags;
 
-        switch (a->type) {
-                case AS_AREA_TEXT:
-                        flags = PAGE_EXEC | PAGE_READ | PAGE_USER | PAGE_PRESENT | PAGE_CACHEABLE;
-                        break;
-                case AS_AREA_DATA:
-                case AS_AREA_STACK:
-                        flags = PAGE_READ | PAGE_WRITE | PAGE_USER | PAGE_PRESENT | PAGE_CACHEABLE;
-                        break;
-                default:
-                        panic("unexpected as_area_type_t %d", a->type);
-        }
+        flags = PAGE_USER | PAGE_PRESENT | PAGE_CACHEABLE;
+        
+        if (a->flags & AS_AREA_READ)
+                flags |= PAGE_READ;
+                
+        if (a->flags & AS_AREA_WRITE)
+                flags |= PAGE_WRITE;
+        
+        if (a->flags & AS_AREA_EXEC)
+                flags |= PAGE_EXEC;
         
         return flags;