Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
5c48b108 | 2 | core-y += arch/x86/crypto/ |
1da177e4 | 3 | |
7bbe7204 | 4 | ifeq ($(CONFIG_X86_32),y) |
42fda663 | 5 | START := 0x8048000 |
1da177e4 | 6 | |
20d00213 | 7 | LDFLAGS += -m elf_i386 |
a6e77d6c AV |
8 | ELF_ARCH := i386 |
9 | ELF_FORMAT := elf32-i386 | |
ca5cd877 | 10 | CHECKFLAGS += -D__i386__ |
20d00213 | 11 | |
a0f97e06 | 12 | KBUILD_CFLAGS += $(call cc-option,-m32) |
222d394d | 13 | KBUILD_AFLAGS += $(call cc-option,-m32) |
20d00213 | 14 | LINK-y += $(call cc-option,-m32) |
20d00213 | 15 | |
a6e77d6c | 16 | export LDFLAGS |
20d00213 | 17 | |
3cb42092 AV |
18 | LDS_EXTRA := -Ui386 |
19 | export LDS_EXTRA | |
20 | ||
96d55b88 | 21 | # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y. |
a436bb7b | 22 | include arch/x86/Makefile_32.cpu |
96d55b88 PBG |
23 | |
24 | # prevent gcc from keeping the stack 16 byte aligned. Taken from i386. | |
25 | cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) | |
26 | ||
fec468b0 JD |
27 | # Prevent sprintf in nfsd from being converted to strcpy and resulting in |
28 | # an unresolved reference. | |
29 | cflags-y += -ffreestanding | |
30 | ||
4f81c535 JD |
31 | # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use |
32 | # a lot more stack due to the lack of sharing of stacklots. Also, gcc | |
33 | # 4.3.0 needs -funit-at-a-time for extern inline functions. | |
665d92e3 | 34 | KBUILD_CFLAGS += $(shell if [ $(cc-version) -lt 0400 ] ; then \ |
4f81c535 JD |
35 | echo $(call cc-option,-fno-unit-at-a-time); \ |
36 | else echo $(call cc-option,-funit-at-a-time); fi ;) | |
37 | ||
a0f97e06 | 38 | KBUILD_CFLAGS += $(cflags-y) |
7bbe7204 AV |
39 | |
40 | else | |
41 | ||
42 | START := 0x60000000 | |
43 | ||
44 | KBUILD_CFLAGS += -fno-builtin -m64 | |
45 | ||
46 | CHECKFLAGS += -m64 -D__x86_64__ | |
47 | KBUILD_AFLAGS += -m64 | |
48 | LDFLAGS += -m elf_x86_64 | |
49 | KBUILD_CPPFLAGS += -m64 | |
50 | ||
51 | ELF_ARCH := i386:x86-64 | |
52 | ELF_FORMAT := elf64-x86-64 | |
53 | ||
54 | # Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example. | |
55 | ||
56 | LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64 | |
57 | LINK-y += -m64 | |
58 | ||
59 | # Do unit-at-a-time unconditionally on x86_64, following the host | |
60 | KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) | |
61 | endif |