From 62e92077a8936e60087d55683538ee386cc673aa Mon Sep 17 00:00:00 2001 From: Albert ARIBAUD Date: Fri, 23 Oct 2015 18:06:40 +0200 Subject: arm: support Thumb-1 with CONFIG_SYS_THUMB_BUILD When building a Thumb-1-only target with CONFIG_SYS_THUMB_BUILD, some files fail to build, most of the time because they include mcr instructions, which only exist for Thumb-2. This patch introduces a Kconfig option CONFIG_THUMB2 and uses it to select between Thumb-2 and ARM mode for the aforementioned files. Signed-off-by: Albert ARIBAUD --- examples/standalone/Makefile | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'examples') diff --git a/examples/standalone/Makefile b/examples/standalone/Makefile index 0863a8cda2..5a6ae0013c 100644 --- a/examples/standalone/Makefile +++ b/examples/standalone/Makefile @@ -73,3 +73,13 @@ $(obj)/%.srec: $(obj)/% FORCE $(obj)/%.bin: OBJCOPYFLAGS := -O binary $(obj)/%.bin: $(obj)/% FORCE $(call if_changed,objcopy) + +# some files can only build in ARM or THUMB2, not THUMB1 + +ifdef CONFIG_SYS_THUMB_BUILD +ifndef CONFIG_HAS_THUMB2 + +CFLAGS_stubs.o := -marm + +endif +endif -- cgit