rename abi to sys. better memory allocation

1 files changed, 26 insertions, 7 deletions

diff --git a/mem/zone.h b/mem/zone.h
index 7e863bf..c0b0f52 100644
--- a/mem/zone.h
+++ b/mem/zone.h
@@ -22,23 +22,42 @@ struct PhysicalMemoryZone
     uintptr_t base;
     uintptr_t limit;
 
-    size_t npages_total;
-    size_t npages_free;
-
     struct BuddyMap freemap;
 };
 
+/**Return the zone index for the given address
+ * @param addr address to look up
+ * @return zone index*/
+int mem_zone_for(uintptr_t addr);
+
+/**Return the lower bound for the given zone index.
+ * @param zone index into zones.
+ * @return lower bound.*/
+uintptr_t mem_zone_bound_lower(size_t zone);
+
+/**Return the upper bound for the given zone index.
+ * @param zone index into zones.
+ * @return upper bound.*/
+uintptr_t mem_zone_bound_upper(size_t zone);
+
+/**Return the number of pages free in the given zone.
+ * @param zone index into zones.
+ * @return number of free pages.*/
+size_t mem_zone_pages_free(size_t zone);
+
 /** Using a given zone, reserve a range of physical addresses
  * @param zone identifier of zone to modify
  * @param base starting address to reserve
- * @param limit ending address to reserve*/
-void mem_zone_resv(size_t zone, uintptr_t base, uintptr_t limit);
+ * @param limit ending address to reserve
+ * @return error code or 0 if success */
+int mem_zone_resv(size_t zone, uintptr_t base, uintptr_t limit);
 
 /** Using a given zone, free a range of physical addresses
  * @param zone identifier of zone to modify
  * @param base starting address to free
- * @param limit ending address to free*/
-void mem_zone_free(size_t zone, uintptr_t base, uintptr_t limit);
+ * @param limit ending address to free
+ * @return error code or 0 if success*/
+int mem_zone_free(size_t zone, uintptr_t base, uintptr_t limit);
 
 /** Allocate a number of pages from the given zone
  * @param zone identifier of the zone to modify