build(bl31): sort sections by alignment by default

This change forces LD to sort all input sections by alignment when
allocating them within an output section. This is done in some places
explicitly in the linker scripts today, but this makes sure we don't
miss any easy targets.

Change-Id: Iadcd38a66a7a9f4b2af3adbc0487a15091486b17
Signed-off-by: Chris Kay <chris.kay@arm.com>

diff --git a/bl31/bl31.mk b/bl31/bl31.mk
index 4d151ab45a23984662d3782c52be2fd4667b751a..9b5cf55bcea85cd1ac5729aee0cf5df56eba56b6 100644 (file)
--- a/bl31/bl31.mk
+++ b/bl31/bl31.mk
@@ -159,6 +159,12 @@ endif
 
 BL31_DEFAULT_LINKER_SCRIPT_SOURCE := bl31/bl31.ld.S
 
+ifneq ($(findstring gcc,$(notdir $(LD))),)
+        BL31_LDFLAGS   +=      -Wl,--sort-section=alignment
+else ifneq ($(findstring ld,$(notdir $(LD))),)
+        BL31_LDFLAGS   +=      --sort-section=alignment
+endif
+
 # Flag used to indicate if Crash reporting via console should be included
 # in BL31. This defaults to being present in DEBUG builds only
 ifndef CRASH_REPORTING