1# SPDX-License-Identifier: GPL-2.0 2# Makefile for the Hexagon arch 3 4KBUILD_DEFCONFIG = comet_defconfig 5 6# Do not use GP-relative jumps 7KBUILD_CFLAGS += -G0 8LDFLAGS_vmlinux += -G0 9 10# Do not use single-byte enums; these will overflow. 11KBUILD_CFLAGS += -fno-short-enums 12 13# Modules must use either long-calls, or use pic/plt. 14# Use long-calls for now, it's easier. And faster. 15# KBUILD_CFLAGS_MODULE += -fPIC 16# KBUILD_LDFLAGS_MODULE += -shared 17KBUILD_CFLAGS_MODULE += -mlong-calls 18 19cflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 20aflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 21ldflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 22 23KBUILD_CFLAGS += $(cflags-y) 24KBUILD_AFLAGS += $(aflags-y) 25KBUILD_LDFLAGS += $(ldflags-y) 26 27# Thread-info register will be r19. This value is not configureable; 28# it is hard-coded in several files. 29TIR_NAME := r19 30KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__ 31KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME) 32 33LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name 2>/dev/null) 34libs-y += $(LIBGCC) 35 36head-y := arch/hexagon/kernel/head.o 37 38core-y += arch/hexagon/kernel/ \ 39 arch/hexagon/mm/ \ 40 arch/hexagon/lib/ 41