1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # s390/Makefile !! 2 # i386/Makefile
4 # 3 #
5 # This file is included by the global makefile 4 # This file is included by the global makefile so that you can add your own
6 # architecture-specific flags and dependencies !! 5 # architecture-specific flags and dependencies. Remember to do have actions
>> 6 # for "archclean" and "archdep" for cleaning up and making dependencies for
>> 7 # this architecture
>> 8 #
>> 9 # This file is subject to the terms and conditions of the GNU General Public
>> 10 # License. See the file "COPYING" in the main directory of this archive
>> 11 # for more details.
7 # 12 #
8 # Copyright (C) 1994 by Linus Torvalds 13 # Copyright (C) 1994 by Linus Torvalds
9 # 14 #
>> 15 # 19990713 Artur Skawina <skawina@geocities.com>
>> 16 # Added '-march' and '-mpreferred-stack-boundary' support
>> 17 #
10 18
11 LD_BFD := elf64-s390 !! 19 LD=$(CROSS_COMPILE)ld -m elf_i386
12 KBUILD_LDFLAGS := -m elf64_s390 !! 20 OBJCOPY=$(CROSS_COMPILE)objcopy -O binary -R .note -R .comment -S
13 KBUILD_AFLAGS_MODULE += -fPIC !! 21 LDFLAGS=-e stext
14 KBUILD_CFLAGS_MODULE += -fPIC !! 22 LINKFLAGS =-T $(TOPDIR)/arch/i386/vmlinux.lds $(LDFLAGS)
15 KBUILD_AFLAGS += -m64 <<
16 KBUILD_CFLAGS += -m64 <<
17 KBUILD_CFLAGS += -fPIC <<
18 LDFLAGS_vmlinux := -no-pie --emit-relocs --dis <<
19 extra_tools := relocs <<
20 aflags_dwarf := -Wa,-gdwarf-2 <<
21 KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) - <<
22 ifndef CONFIG_AS_IS_LLVM <<
23 KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DE <<
24 endif <<
25 KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) - <<
26 KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH <<
27 KBUILD_CFLAGS_DECOMPRESSOR += -D__DECOMPRESSOR <<
28 KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null <<
29 KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronou <<
30 KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding <<
31 KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-prote <<
32 KBUILD_CFLAGS_DECOMPRESSOR += -fPIE <<
33 KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disabl <<
34 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DE <<
35 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DE <<
36 KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC <<
37 <<
38 UTS_MACHINE := s390x <<
39 STACK_SIZE := $(if $(CONFIG_KASAN),65536, <<
40 CHECKFLAGS += -D__s390__ -D__s390x__ <<
41 <<
42 export LD_BFD <<
43 <<
44 mflags-$(CONFIG_MARCH_Z10) := -march=z10 <<
45 mflags-$(CONFIG_MARCH_Z196) := -march=z196 <<
46 mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12 <<
47 mflags-$(CONFIG_MARCH_Z13) := -march=z13 <<
48 mflags-$(CONFIG_MARCH_Z14) := -march=z14 <<
49 mflags-$(CONFIG_MARCH_Z15) := -march=z15 <<
50 mflags-$(CONFIG_MARCH_Z16) := -march=z16 <<
51 <<
52 export CC_FLAGS_MARCH := $(mflags-y) <<
53 <<
54 aflags-y += $(mflags-y) <<
55 cflags-y += $(mflags-y) <<
56 <<
57 cflags-$(CONFIG_MARCH_Z10_TUNE) += -mt <<
58 cflags-$(CONFIG_MARCH_Z196_TUNE) += -mt <<
59 cflags-$(CONFIG_MARCH_ZEC12_TUNE) += -mt <<
60 cflags-$(CONFIG_MARCH_Z13_TUNE) += -mt <<
61 cflags-$(CONFIG_MARCH_Z14_TUNE) += -mt <<
62 cflags-$(CONFIG_MARCH_Z15_TUNE) += -mt <<
63 cflags-$(CONFIG_MARCH_Z16_TUNE) += -mt <<
64 <<
65 cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/incl <<
66 <<
67 # <<
68 # Prevent tail-call optimizations, to get clea <<
69 # <<
70 cflags-$(CONFIG_FRAME_POINTER) += -fno-optimiz <<
71 <<
72 KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y) <<
73 KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y) <<
74 <<
75 ifneq ($(call cc-option,-mstack-size=8192 -mst <<
76 CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK <<
77 ifeq ($(call cc-option,-mstack-size=8192),) <<
78 CC_FLAGS_CHECK_STACK += -mstack-guard=$(CO <<
79 endif <<
80 export CC_FLAGS_CHECK_STACK <<
81 cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_C <<
82 endif <<
83 <<
84 ifdef CONFIG_EXPOLINE <<
85 ifdef CONFIG_EXPOLINE_EXTERN <<
86 CC_FLAGS_EXPOLINE := -mindirect-branch=thu <<
87 CC_FLAGS_EXPOLINE += -mfunction-return=thu <<
88 else <<
89 CC_FLAGS_EXPOLINE := -mindirect-branch=thu <<
90 CC_FLAGS_EXPOLINE += -mfunction-return=thu <<
91 endif <<
92 CC_FLAGS_EXPOLINE += -mindirect-branch-table <<
93 export CC_FLAGS_EXPOLINE <<
94 cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_ <<
95 aflags-y += -DCC_USING_EXPOLINE <<
96 endif <<
97 <<
98 ifdef CONFIG_FUNCTION_TRACER <<
99 ifeq ($(call cc-option,-mfentry -mnop-mcount <<
100 # make use of hotpatch feature if the comp <<
101 cc_hotpatch := -mhotpatch=0,3 <<
102 ifneq ($(call cc-option,$(cc_hotpatch)),) <<
103 CC_FLAGS_FTRACE := $(cc_hotpatch) <<
104 KBUILD_AFLAGS += -DCC_USING_HOTPATCH <<
105 KBUILD_CFLAGS += -DCC_USING_HOTPATCH <<
106 endif <<
107 endif <<
108 endif <<
109 <<
110 # Test CFI features of binutils <<
111 cfi := $(call as-instr,.cfi_startproc\n.cfi_va <<
112 <<
113 KBUILD_CFLAGS += -mpacked-stack -mbackchain <<
114 KBUILD_CFLAGS += -pipe -Wno-sign-compare <<
115 KBUILD_CFLAGS += -fno-asynchronous-unwind-ta <<
116 KBUILD_AFLAGS += $(aflags-y) $(cfi) <<
117 export KBUILD_AFLAGS_DECOMPRESSOR <<
118 export KBUILD_CFLAGS_DECOMPRESSOR <<
119 <<
120 OBJCOPYFLAGS := -O binary <<
121 <<
122 libs-y += arch/s390/lib/ <<
123 <<
124 boot := arch/s390/boot <<
125 syscalls := arch/s390/kernel/syscalls <<
126 tools := arch/s390/tools <<
127 23
128 all: bzImage !! 24 CFLAGS += -pipe
129 25
130 #KBUILD_IMAGE is necessary for packaging targe !! 26 # prevent gcc from keeping the stack 16 byte aligned
131 KBUILD_IMAGE := $(boot)/bzImage !! 27 CFLAGS += $(call check_gcc,-mpreferred-stack-boundary=2,)
132 28
133 install: !! 29 ifdef CONFIG_M386
134 $(call cmd,install) !! 30 CFLAGS += -march=i386
>> 31 endif
135 32
136 bzImage: vmlinux !! 33 ifdef CONFIG_M486
137 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ !! 34 CFLAGS += -march=i486
>> 35 endif
>> 36
>> 37 ifdef CONFIG_M586
>> 38 CFLAGS += -march=i586
>> 39 endif
>> 40
>> 41 ifdef CONFIG_M586TSC
>> 42 CFLAGS += -march=i586
>> 43 endif
>> 44
>> 45 ifdef CONFIG_M586MMX
>> 46 CFLAGS += -march=i586
>> 47 endif
>> 48
>> 49 ifdef CONFIG_M686
>> 50 CFLAGS += -march=i686
>> 51 endif
>> 52
>> 53 ifdef CONFIG_MPENTIUMIII
>> 54 CFLAGS += -march=i686
>> 55 endif
>> 56
>> 57 ifdef CONFIG_MPENTIUM4
>> 58 CFLAGS += -march=i686
>> 59 endif
>> 60
>> 61 ifdef CONFIG_MK6
>> 62 CFLAGS += $(call check_gcc,-march=k6,-march=i586)
>> 63 endif
>> 64
>> 65 ifdef CONFIG_MK7
>> 66 CFLAGS += $(call check_gcc,-march=athlon,-march=i686 -malign-functions=4)
>> 67 endif
>> 68
>> 69 ifdef CONFIG_MCRUSOE
>> 70 CFLAGS += -march=i686
>> 71 CFLAGS += $(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,-malign-functions=0 -malign-jumps=0 -malign-loops=0)
>> 72 endif
>> 73
>> 74 ifdef CONFIG_MGEODE_LX
>> 75 CFLAGS += -march=i686
>> 76 endif
138 77
139 zfcpdump: !! 78 ifdef CONFIG_MWINCHIPC6
140 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ !! 79 CFLAGS += -march=i586
>> 80 endif
>> 81
>> 82 ifdef CONFIG_MWINCHIP2
>> 83 CFLAGS += -march=i586
>> 84 endif
141 85
142 archheaders: !! 86 ifdef CONFIG_MWINCHIP3D
143 $(Q)$(MAKE) $(build)=$(syscalls) uapi !! 87 CFLAGS += -march=i586
>> 88 endif
>> 89
>> 90 ifdef CONFIG_MCYRIXIII
>> 91 CFLAGS += $(call check_gcc,-march=c3,-march=i486)
>> 92 CFLAGS += $(call check_gcc,-falign-functions=0 -falign-jumps=0 -falign-loops=0,-malign-functions=0 -malign-jumps=0 -malign-loops=0)
>> 93 endif
144 94
145 archprepare: !! 95 ifdef CONFIG_MVIAC3_2
146 $(Q)$(MAKE) $(build)=$(syscalls) kapi !! 96 CFLAGS += $(call check_gcc,-march=c3-2,-march=i686)
147 $(Q)$(MAKE) $(build)=$(tools) kapi $(e !! 97 endif
148 ifeq ($(KBUILD_EXTMOD),) <<
149 # We need to generate vdso-offsets.h before co <<
150 # In order to do that, we should use the archp <<
151 # asm-offsets.h is included in some files used <<
152 # asm-offsets.h is built in prepare0, for whic <<
153 # Therefore we need to generate the header aft <<
154 # this hack. <<
155 prepare: vdso_prepare <<
156 vdso_prepare: prepare0 <<
157 $(Q)$(MAKE) $(build)=arch/s390/kernel/ <<
158 $(if $(CONFIG_COMPAT),$(Q)$(MAKE) \ <<
159 $(build)=arch/s390/kernel/vdso <<
160 <<
161 vdso-install-y += arch/s390/k <<
162 vdso-install-$(CONFIG_COMPAT) += arch/s390/k <<
163 98
>> 99 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
>> 100 # a lot more stack due to the lack of sharing of stacklots.
>> 101 # CFLAGS += $(call if_gcc4,,$(call check_gcc,-fno-unit-at-a-time,))
>> 102 # Disable unit-at-a-time on gcc >= 4 too, because it removes seemingly unused
>> 103 # variables which are indeed module params.
>> 104 CFLAGS += $(call check_gcc,-fno-unit-at-a-time,)
>> 105
>> 106 HEAD := arch/i386/kernel/head.o arch/i386/kernel/init_task.o
>> 107
>> 108 SUBDIRS += arch/i386/kernel arch/i386/mm arch/i386/lib
>> 109
>> 110 CORE_FILES := arch/i386/kernel/kernel.o arch/i386/mm/mm.o $(CORE_FILES)
>> 111 LIBS := $(TOPDIR)/arch/i386/lib/lib.a $(LIBS) $(TOPDIR)/arch/i386/lib/lib.a
>> 112
>> 113 ifdef CONFIG_MATH_EMULATION
>> 114 SUBDIRS += arch/i386/math-emu
>> 115 DRIVERS += arch/i386/math-emu/math.o
164 endif 116 endif
165 117
166 # Don't use tabs in echo arguments !! 118 arch/i386/kernel: dummy
167 define archhelp !! 119 $(MAKE) linuxsubdirs SUBDIRS=arch/i386/kernel
168 echo '* bzImage - Kernel image for !! 120
169 echo ' install - Install kernel us !! 121 arch/i386/mm: dummy
170 echo ' (your) ~/bin/$(IN !! 122 $(MAKE) linuxsubdirs SUBDIRS=arch/i386/mm
171 echo ' (distribution) /s !! 123
172 echo ' install to $$(INS !! 124 MAKEBOOT = $(MAKE) -C arch/$(ARCH)/boot
173 endef !! 125
>> 126 vmlinux: arch/i386/vmlinux.lds
>> 127
>> 128 FORCE: ;
>> 129
>> 130 .PHONY: zImage bzImage compressed zlilo bzlilo zdisk bzdisk install \
>> 131 clean archclean archmrproper archdep
>> 132
>> 133 zImage: vmlinux
>> 134 @$(MAKEBOOT) zImage
>> 135
>> 136 bzImage: vmlinux
>> 137 @$(MAKEBOOT) bzImage
>> 138
>> 139 compressed: zImage
>> 140
>> 141 zlilo: vmlinux
>> 142 @$(MAKEBOOT) BOOTIMAGE=zImage zlilo
>> 143
>> 144 tmp:
>> 145 @$(MAKEBOOT) BOOTIMAGE=bzImage zlilo
>> 146 bzlilo: vmlinux
>> 147 @$(MAKEBOOT) BOOTIMAGE=bzImage zlilo
>> 148
>> 149 zdisk: vmlinux
>> 150 @$(MAKEBOOT) BOOTIMAGE=zImage zdisk
>> 151
>> 152 bzdisk: vmlinux
>> 153 @$(MAKEBOOT) BOOTIMAGE=bzImage zdisk
>> 154
>> 155 install: vmlinux
>> 156 @$(MAKEBOOT) BOOTIMAGE=bzImage install
>> 157
>> 158 archclean:
>> 159 @$(MAKEBOOT) clean
>> 160
>> 161 archmrproper:
>> 162
>> 163 archdep:
>> 164 @$(MAKEBOOT) dep
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