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37 lines
1.1 KiB
Makefile
37 lines
1.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Makefile for the Hexagon arch
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KBUILD_DEFCONFIG = comet_defconfig
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# Do not use GP-relative jumps
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KBUILD_CFLAGS += -G0
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LDFLAGS_vmlinux += -G0
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# Do not use single-byte enums; these will overflow.
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KBUILD_CFLAGS += -fno-short-enums
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# We must use long-calls:
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KBUILD_CFLAGS += -mlong-calls
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# Modules must use either long-calls, or use pic/plt.
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# Use long-calls for now, it's easier. And faster.
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# KBUILD_CFLAGS_MODULE += -fPIC
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# KBUILD_LDFLAGS_MODULE += -shared
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KBUILD_CFLAGS_MODULE += -mlong-calls
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cflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
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aflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
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ldflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
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KBUILD_CFLAGS += $(cflags-y)
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KBUILD_AFLAGS += $(aflags-y)
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KBUILD_LDFLAGS += $(ldflags-y)
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# Thread-info register will be r19. This value is not configureable;
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# it is hard-coded in several files.
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TIR_NAME := r19
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KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
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KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
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head-y := arch/hexagon/kernel/head.o
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