1# SPDX-License-Identifier: GPL-2.0 2core-y += arch/x86/crypto/ 3 4# 5# Disable SSE and other FP/SIMD instructions to match normal x86 6# This is required to work around issues in older LLVM versions, but breaks 7# GCC versions < 11. See: 8# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99652 9# 10ifeq ($(call gcc-min-version, 110000)$(CONFIG_CC_IS_CLANG),y) 11KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx 12KBUILD_RUSTFLAGS += -Ctarget-feature=-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-avx,-avx2 13endif 14 15KBUILD_RUSTFLAGS += --target=$(objtree)/scripts/target.json 16 17# The target.json file is not available when invoking rustc-option, so use the 18# built-in target when checking whether flags are supported instead. 19ifeq ($(CONFIG_X86_32),y) 20KBUILD_RUSTFLAGS_OPTION_CHKS += --target=i686-unknown-linux-gnu 21else 22KBUILD_RUSTFLAGS_OPTION_CHKS += --target=x86_64-unknown-linux-gnu 23endif 24 25ifeq ($(CONFIG_X86_32),y) 26START := 0x8048000 27 28KBUILD_LDFLAGS += -m elf_i386 29ELF_ARCH := i386 30ELF_FORMAT := elf32-i386 31CHECKFLAGS += -D__i386__ 32 33KBUILD_CFLAGS += $(call cc-option,-m32) 34KBUILD_AFLAGS += $(call cc-option,-m32) 35LINK-y += $(call cc-option,-m32) 36 37LDS_EXTRA := -Ui386 38export LDS_EXTRA 39 40# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y. 41include $(srctree)/arch/x86/Makefile_32.cpu 42 43# prevent gcc from keeping the stack 16 byte aligned. Taken from i386. 44cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) 45 46# Prevent sprintf in nfsd from being converted to strcpy and resulting in 47# an unresolved reference. 48cflags-y += -ffreestanding 49 50KBUILD_CFLAGS += $(cflags-y) 51 52else 53 54START := 0x60000000 55 56KBUILD_CFLAGS += -fno-builtin -m64 57 58CHECKFLAGS += -m64 -D__x86_64__ 59KBUILD_AFLAGS += -m64 60KBUILD_LDFLAGS += -m elf_x86_64 61KBUILD_CPPFLAGS += -m64 62 63ELF_ARCH := i386:x86-64 64ELF_FORMAT := elf64-x86-64 65 66# Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example. 67 68LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib64 69LINK-y += -m64 70 71vdso-install-y += arch/x86/um/vdso/vdso.so.dbg 72 73endif 74