diff options
| -rw-r--r-- | arch/arm/config.mk | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/config.mk b/arch/arm/config.mk index 3f4453a..24b9d7c 100644 --- a/arch/arm/config.mk +++ b/arch/arm/config.mk @@ -87,3 +87,21 @@ endif ifndef CONFIG_NAND_SPL LDFLAGS_u-boot += -pie endif + +# +# FIXME: binutils versions < 2.22 have a bug in the assembler where +# branches to weak symbols can be incorrectly optimized in thumb mode +# to a short branch (b.n instruction) that won't reach when the symbol +# gets preempted +# +# http://sourceware.org/bugzilla/show_bug.cgi?id=12532 +# +ifeq ($(CONFIG_SYS_THUMB_BUILD),y) +ifeq ($(GAS_BUG_12532),) +export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \ + then echo y; else echo n; fi) +endif +ifeq ($(GAS_BUG_12532),y) +PLATFORM_RELFLAGS += -fno-optimize-sibling-calls +endif +endif |