1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2e95bf452SRichard Kuo# Makefile for the Hexagon arch 3e95bf452SRichard Kuo 4e95bf452SRichard KuoKBUILD_DEFCONFIG = comet_defconfig 5e95bf452SRichard Kuo 6e95bf452SRichard Kuo# Do not use GP-relative jumps 7e95bf452SRichard KuoKBUILD_CFLAGS += -G0 8e95bf452SRichard KuoLDFLAGS_vmlinux += -G0 9e95bf452SRichard Kuo 10e95bf452SRichard Kuo# Do not use single-byte enums; these will overflow. 11e95bf452SRichard KuoKBUILD_CFLAGS += -fno-short-enums 12e95bf452SRichard Kuo 13788dcee0SSid Manning# We must use long-calls: 14788dcee0SSid ManningKBUILD_CFLAGS += -mlong-calls 15788dcee0SSid Manning 16e95bf452SRichard Kuo# Modules must use either long-calls, or use pic/plt. 17e95bf452SRichard Kuo# Use long-calls for now, it's easier. And faster. 183a5befc1SCao jin# KBUILD_CFLAGS_MODULE += -fPIC 193a5befc1SCao jin# KBUILD_LDFLAGS_MODULE += -shared 203a5befc1SCao jinKBUILD_CFLAGS_MODULE += -mlong-calls 21e95bf452SRichard Kuo 2266b03dbfSRichard Kuocflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 2366b03dbfSRichard Kuoaflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 2466b03dbfSRichard Kuoldflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION}) 25e95bf452SRichard Kuo 26e95bf452SRichard KuoKBUILD_CFLAGS += $(cflags-y) 27e95bf452SRichard KuoKBUILD_AFLAGS += $(aflags-y) 28d503ac53SMasahiro YamadaKBUILD_LDFLAGS += $(ldflags-y) 29e95bf452SRichard Kuo 30e95bf452SRichard Kuo# Thread-info register will be r19. This value is not configureable; 31e95bf452SRichard Kuo# it is hard-coded in several files. 32e95bf452SRichard KuoTIR_NAME := r19 33e95bf452SRichard KuoKBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__ 34e95bf452SRichard KuoKBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME) 35*aef25be3SNathan Chancellor 36*aef25be3SNathan Chancellor# Disable HexagonConstExtenders pass for LLVM versions prior to 19.1.0 37*aef25be3SNathan Chancellor# https://github.com/llvm/llvm-project/issues/99714 38*aef25be3SNathan Chancellorifneq ($(call clang-min-version, 190100),y) 39*aef25be3SNathan ChancellorKBUILD_CFLAGS += -mllvm -hexagon-cext=false 40*aef25be3SNathan Chancellorendif 41