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-rw-r--r--arch/arm64/Makefile15
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 9b41f1e3b1a0..b35788c909f1 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -14,8 +14,12 @@ LDFLAGS_vmlinux :=-p --no-undefined -X
CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
GZFLAGS :=-9
-ifneq ($(CONFIG_RELOCATABLE),)
-LDFLAGS_vmlinux += -pie -shared -Bsymbolic
+ifeq ($(CONFIG_RELOCATABLE), y)
+# Pass --no-apply-dynamic-relocs to restore pre-binutils-2.27 behaviour
+# for relative relocs, since this leads to better Image compression
+# with the relocation offsets always being zero.
+LDFLAGS_vmlinux += -pie -shared -Bsymbolic \
+ $(call ld-option, --no-apply-dynamic-relocs)
endif
ifeq ($(CONFIG_ARM64_ERRATUM_843419),y)
@@ -50,17 +54,24 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
KBUILD_AFLAGS += $(lseinstr) $(brokengasinst)
+KBUILD_CFLAGS += $(call cc-option,-mabi=lp64)
+KBUILD_AFLAGS += $(call cc-option,-mabi=lp64)
+
+KBUILD_CFLAGS += $(call cc-ifversion, -ge, 0500, -DCONFIG_ARCH_SUPPORTS_INT128)
+
ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
KBUILD_CPPFLAGS += -mbig-endian
CHECKFLAGS += -D__AARCH64EB__
AS += -EB
LD += -EB
+LDFLAGS += -maarch64linuxb
UTS_MACHINE := aarch64_be
else
KBUILD_CPPFLAGS += -mlittle-endian
CHECKFLAGS += -D__AARCH64EL__
AS += -EL
LD += -EL
+LDFLAGS += -maarch64linux
UTS_MACHINE := aarch64
endif