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| author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-10-23 18:06:40 +0200 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2015-11-10 15:03:48 +0100 |
| commit | 62e92077a8936e60087d55683538ee386cc673aa (patch) | |
| tree | 98bf9f9796ab466ad1bff97c7672d5c3159526d3 /examples | |
| parent | bf104ffa2594e5bf14ef2d5ac2711084c763ef77 (diff) | |
| download | u-boot-62e92077a8936e60087d55683538ee386cc673aa.tar.gz | |
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 <albert.u.boot@aribaud.net>
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/standalone/Makefile | 10 |
1 files changed, 10 insertions, 0 deletions
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 |