| # SPDX-License-Identifier: GPL-2.0 | |
| # 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 | |
| # We must use long-calls: | |
| KBUILD_CFLAGS += -mlong-calls | |
| # Modules must use either long-calls, or use pic/plt. | |
| # Use long-calls for now, it's easier. And faster. | |
| # KBUILD_CFLAGS_MODULE += -fPIC | |
| # KBUILD_LDFLAGS_MODULE += -shared | |
| KBUILD_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) | |
| KBUILD_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) | |
| # Disable HexagonConstExtenders pass for LLVM versions prior to 19.1.0 | |
| # https://github.com/llvm/llvm-project/issues/99714 | |
| ifneq ($(call clang-min-version, 190100),y) | |
| KBUILD_CFLAGS += -mllvm -hexagon-cext=false | |
| endif |