Changeset ae6f303 in mainline

Timestamp:

2011-02-03T21:07:14Z (14 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

0b37882

Parents:

66485741

Message:

add some helpful macros

File:

• uspace/lib/c/include/as.h (modified) (1 diff)

uspace/lib/c/include/as.h

@@ -41 +41 @@
 #include <libarch/config.h>
 
+static inline size_t SIZE2PAGES(size_t size)
+{
+        if (size == 0)
+                return 0;
+        
+        return (size_t) ((size - 1) >> PAGE_WIDTH) + 1;
+}
+
+static inline size_t PAGES2SIZE(size_t pages)
+{
+        return (size_t) (pages << PAGE_WIDTH);
+}
+
 extern void *as_area_create(void *address, size_t size, int flags);
 extern int as_area_resize(void *address, size_t size, int flags);