diff options
Diffstat (limited to 'arch/powerpc/Makefile')
| -rw-r--r-- | arch/powerpc/Makefile | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 8a2ce14d68d0..488c9edffa58 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -30,6 +30,10 @@ endif endif endif +ifdef CONFIG_PPC_BOOK3S_32 +KBUILD_CFLAGS += -mcpu=powerpc +endif + ifeq ($(CROSS_COMPILE),) KBUILD_DEFCONFIG := $(shell uname -m)_defconfig else @@ -152,7 +156,14 @@ endif CFLAGS-$(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 $(MULTIPLEWORD) +# Clang unconditionally reserves r2 on ppc32 and does not support the flag +# https://bugs.llvm.org/show_bug.cgi?id=39555 +CFLAGS-$(CONFIG_PPC32) := $(call cc-option, -ffixed-r2) + +# Clang doesn't support -mmultiple / -mno-multiple +# https://bugs.llvm.org/show_bug.cgi?id=39556 +CFLAGS-$(CONFIG_PPC32) += $(call cc-option, $(MULTIPLEWORD)) + CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-mno-readonly-in-sdata) ifdef CONFIG_PPC_BOOK3S_64 @@ -228,10 +239,6 @@ KBUILD_CFLAGS += $(call cc-option,-mno-vsx) KBUILD_CFLAGS += $(call cc-option,-mno-spe) KBUILD_CFLAGS += $(call cc-option,-mspe=no) -# Enable unit-at-a-time mode when possible. It shrinks the -# kernel considerably. -KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) - # FIXME: the module load should be taught about the additional relocs # generated by this. # revert to pre-gcc-4.4 behaviour of .eh_frame @@ -241,10 +248,6 @@ KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) # often slow when they are implemented at all KBUILD_CFLAGS += $(call cc-option,-mno-string) -ifdef CONFIG_6xx -KBUILD_CFLAGS += -mcpu=powerpc -endif - cpu-as-$(CONFIG_4xx) += -Wa,-m405 cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec) cpu-as-$(CONFIG_E200) += -Wa,-me200 @@ -317,6 +320,14 @@ PHONY += ppc64le_defconfig ppc64le_defconfig: $(call merge_into_defconfig,ppc64_defconfig,le) +PHONY += ppc64le_guest_defconfig +ppc64le_guest_defconfig: + $(call merge_into_defconfig,ppc64_defconfig,le guest) + +PHONY += ppc64_guest_defconfig +ppc64_guest_defconfig: + $(call merge_into_defconfig,ppc64_defconfig,be guest) + PHONY += powernv_be_defconfig powernv_be_defconfig: $(call merge_into_defconfig,powernv_defconfig,be) @@ -402,6 +413,9 @@ archclean: archprepare: checkbin +archheaders: + $(Q)$(MAKE) $(build)=arch/powerpc/kernel/syscalls all + ifdef CONFIG_STACKPROTECTOR prepare: stack_protector_prepare |