Question, are there any fundamental reasons we shouldn't use the ELFv2 ABI to build big endian kernels if the compiler supports it?
Thanks, Nick --- arch/powerpc/Makefile | 15 +++++---------- arch/powerpc/boot/Makefile | 2 +- 2 files changed, 6 insertions(+), 11 deletions(-) diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 902da6e..b4867fc 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -72,18 +72,19 @@ GNUTARGET := powerpc MULTIPLEWORD := -mmultiple endif +ifeq ($(CONFIG_PPC64),y) +cflags-y += $(call cc-option,-mabi=elfv2) +aflags-y += $(call cc-option,-mabi=elfv2) +endif + cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian) -cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1) cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian -cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2 ifneq ($(cc-name),clang) cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align endif aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian) -aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1) aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian -aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2 ifeq ($(HAS_BIARCH),y) override AS += -a$(BITS) @@ -113,14 +114,8 @@ endif endif CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no) -ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc)) AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) -else -CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc) -CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1) -AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1) -endif CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc)) CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index 1d50d41..ef2499b 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -33,7 +33,7 @@ BOOTCFLAGS += -m64 endif ifdef CONFIG_CPU_BIG_ENDIAN BOOTCFLAGS += -mbig-endian -BOOTCFLAGS += $(call cc-option,-mabi=elfv1) +BOOTCFLAGS += $(call cc-option,-mabi=elfv2) else BOOTCFLAGS += -mlittle-endian BOOTCFLAGS += $(call cc-option,-mabi=elfv2) -- 2.10.2
