xlat: Use MAP_REGION macro as compatibility layer
Use the MAP_REGION to build the mmap_region_t argument in wrappers like
mmap_add_region(). Evolution of the mmap_region_t might require adding
new members with a non-zero default value. Users of MAP_REGION are
protected against such evolution. This commit also protects users of
mmap_add_region() and mmap_add_dynamic_region() functions against these
evolutions.
Also make the MAP_REGION macro implementation more explicit and make it
a mmap_region_t compound literal to make it useable as a function
parameter on its own and to prevent using it in initialization of
variables of different type.
Change-Id: I7bfc4689f6dd4dd23c895b65f628d8ee991fc161
Signed-off-by: Douglas Raillard <douglas.raillard@arm.com>
diff --git a/include/lib/xlat_tables/xlat_tables_v2.h b/include/lib/xlat_tables/xlat_tables_v2.h
index 288a8e0..2be4329 100644
--- a/include/lib/xlat_tables/xlat_tables_v2.h
+++ b/include/lib/xlat_tables/xlat_tables_v2.h
@@ -23,7 +23,12 @@
/* Helper macro to define entries for mmap_region_t. It allows to
* re-map address mappings from 'pa' to 'va' for each region.
*/
-#define MAP_REGION(pa, va, sz, attr) {(pa), (va), (sz), (attr)}
+#define MAP_REGION(_pa, _va, _sz, _attr) ((mmap_region_t){ \
+ .base_pa = (_pa), \
+ .base_va = (_va), \
+ .size = (_sz), \
+ .attr = (_attr), \
+ })
/*
* Shifts and masks to access fields of an mmap_attr_t