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# Makefile for the Hexagon arch
KBUILD_DEFCONFIG = comet_defconfig
# Do not use GP-relative jumps
KBUILD_CFLAGS += -G0
LDFLAGS_vmlinux += -G0
# Do not use single-byte enums; these will overflow.
KBUILD_CFLAGS += -fno-short-enums
# Modules must use either long-calls, or use pic/plt.
# Use long-calls for now, it's easier. And faster.
# CFLAGS_MODULE += -fPIC
# LDFLAGS_MODULE += -shared
CFLAGS_MODULE += -mlong-calls
cflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
aflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
ldflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
KBUILD_CFLAGS += $(cflags-y)
KBUILD_AFLAGS += $(aflags-y)
# no KBUILD_LDFLAGS?
LDFLAGS += $(ldflags-y)
# Thread-info register will be r19. This value is not configureable;
# it is hard-coded in several files.
TIR_NAME := r19
KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
libs-y += $(LIBGCC)
head-y := arch/hexagon/kernel/head.o
core-y += arch/hexagon/kernel/ \
arch/hexagon/mm/ \
arch/hexagon/lib/
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