| # SPDX-License-Identifier: GPL-2.0 | |
| core-y += arch/x86/crypto/ | |
| # | |
| # Disable SSE and other FP/SIMD instructions to match normal x86 | |
| # This is required to work around issues in older LLVM versions, but breaks | |
| # GCC versions < 11. See: | |
| # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99652 | |
| # | |
| ifeq ($(call gcc-min-version, 110000)$(CONFIG_CC_IS_CLANG),y) | |
| KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx | |
| KBUILD_RUSTFLAGS += -Ctarget-feature=-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-avx,-avx2 | |
| endif | |
| KBUILD_RUSTFLAGS += --target=$(objtree)/scripts/target.json | |
| # The target.json file is not available when invoking rustc-option, so use the | |
| # built-in target when checking whether flags are supported instead. | |
| ifeq ($(CONFIG_X86_32),y) | |
| KBUILD_RUSTFLAGS_OPTION_CHKS += --target=i686-unknown-linux-gnu | |
| else | |
| KBUILD_RUSTFLAGS_OPTION_CHKS += --target=x86_64-unknown-linux-gnu | |
| endif | |
| ifeq ($(CONFIG_X86_32),y) | |
| START := 0x8048000 | |
| KBUILD_LDFLAGS += -m elf_i386 | |
| ELF_ARCH := i386 | |
| ELF_FORMAT := elf32-i386 | |
| CHECKFLAGS += -D__i386__ | |
| KBUILD_CFLAGS += $(call cc-option,-m32) | |
| KBUILD_AFLAGS += $(call cc-option,-m32) | |
| LINK-y += $(call cc-option,-m32) | |
| LDS_EXTRA := -Ui386 | |
| export LDS_EXTRA | |
| # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y. | |
| include $(srctree)/arch/x86/Makefile_32.cpu | |
| # prevent gcc from keeping the stack 16 byte aligned. Taken from i386. | |
| cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) | |
| # Prevent sprintf in nfsd from being converted to strcpy and resulting in | |
| # an unresolved reference. | |
| cflags-y += -ffreestanding | |
| KBUILD_CFLAGS += $(cflags-y) | |
| else | |
| START := 0x60000000 | |
| KBUILD_CFLAGS += -fno-builtin -m64 | |
| CHECKFLAGS += -m64 -D__x86_64__ | |
| KBUILD_AFLAGS += -m64 | |
| KBUILD_LDFLAGS += -m elf_x86_64 | |
| KBUILD_CPPFLAGS += -m64 | |
| ELF_ARCH := i386:x86-64 | |
| ELF_FORMAT := elf64-x86-64 | |
| # Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example. | |
| LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib64 | |
| LINK-y += -m64 | |
| vdso-install-y += arch/x86/um/vdso/vdso.so.dbg | |
| endif |