ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer
[muen/linux.git] / arch / arm / Makefile
1 #
2 # arch/arm/Makefile
3 #
4 # This file is included by the global makefile so that you can add your own
5 # architecture-specific flags and dependencies.
6 #
7 # This file is subject to the terms and conditions of the GNU General Public
8 # License.  See the file "COPYING" in the main directory of this archive
9 # for more details.
10 #
11 # Copyright (C) 1995-2001 by Russell King
12
13 LDFLAGS_vmlinux := --no-undefined -X --pic-veneer
14 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
15 LDFLAGS_vmlinux += --be8
16 KBUILD_LDFLAGS_MODULE   += --be8
17 endif
18
19 ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
20 KBUILD_LDFLAGS_MODULE   += -T $(srctree)/arch/arm/kernel/module.lds
21 endif
22
23 GZFLAGS         :=-9
24 #KBUILD_CFLAGS  +=-pipe
25
26 # Never generate .eh_frame
27 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
28
29 # This should work on most of the modern platforms
30 KBUILD_DEFCONFIG := multi_v7_defconfig
31
32 # defines filename extension depending memory management type.
33 ifeq ($(CONFIG_MMU),)
34 MMUEXT          := -nommu
35 KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
36 endif
37
38 ifeq ($(CONFIG_FRAME_POINTER),y)
39 KBUILD_CFLAGS   +=-fno-omit-frame-pointer
40 ifeq ($(CONFIG_CC_IS_GCC),y)
41 KBUILD_CFLAGS += -mapcs -mno-sched-prolog
42 endif
43 endif
44
45 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
46 KBUILD_CPPFLAGS += -mbig-endian
47 CHECKFLAGS      += -D__ARMEB__
48 AS              += -EB
49 KBUILD_LDFLAGS  += -EB
50 else
51 KBUILD_CPPFLAGS += -mlittle-endian
52 CHECKFLAGS      += -D__ARMEL__
53 AS              += -EL
54 KBUILD_LDFLAGS  += -EL
55 endif
56
57 #
58 # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
59 # later may result in code being generated that handles signed short and signed
60 # char struct members incorrectly. So disable it.
61 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
62 #
63 KBUILD_CFLAGS   += $(call cc-option,-fno-ipa-sra)
64
65 # This selects which instruction set is used.
66 # Note that GCC does not numerically define an architecture version
67 # macro, but instead defines a whole series of macros which makes
68 # testing for a specific architecture or later rather impossible.
69 arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
70 arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
71 arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
72 # Only override the compiler option if ARMv6. The ARMv6K extensions are
73 # always available in ARMv7
74 ifeq ($(CONFIG_CPU_32v6),y)
75 arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
76 endif
77 arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
78 arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
79 arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
80 arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3m
81
82 # Evaluate arch cc-option calls now
83 arch-y := $(arch-y)
84
85 # This selects how we optimise for the processor.
86 tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
87 tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
88 tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
89 tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
90 tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
91 tune-$(CONFIG_CPU_ARM946E)      =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
92 tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
93 tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
94 tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
95 tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
96 tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
97 tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
98 tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
99 tune-$(CONFIG_CPU_XSCALE)       =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
100 tune-$(CONFIG_CPU_XSC3)         =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
101 tune-$(CONFIG_CPU_FEROCEON)     =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
102 tune-$(CONFIG_CPU_V6)           =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
103 tune-$(CONFIG_CPU_V6K)          =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
104
105 # Evaluate tune cc-option calls now
106 tune-y := $(tune-y)
107
108 ifeq ($(CONFIG_AEABI),y)
109 CFLAGS_ABI      :=-mabi=aapcs-linux -mfpu=vfp
110 else
111 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
112 endif
113
114 ifeq ($(CONFIG_ARM_UNWIND),y)
115 CFLAGS_ABI      +=-funwind-tables
116 endif
117
118 ifeq ($(CONFIG_CC_IS_CLANG),y)
119 CFLAGS_ABI      += -meabi gnu
120 endif
121
122 # Accept old syntax despite ".syntax unified"
123 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
124
125 ifeq ($(CONFIG_THUMB2_KERNEL),y)
126 CFLAGS_ISA      :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
127 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
128 # Work around buggy relocation from gas if requested:
129 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
130 KBUILD_CFLAGS_MODULE    +=-fno-optimize-sibling-calls
131 endif
132 else
133 CFLAGS_ISA      :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
134 AFLAGS_ISA      :=$(CFLAGS_ISA)
135 endif
136
137 # Need -Uarm for gcc < 3.x
138 KBUILD_CFLAGS   +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
139 KBUILD_AFLAGS   +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
140
141 CHECKFLAGS      += -D__arm__
142
143 #Default value
144 head-y          := arch/arm/kernel/head$(MMUEXT).o
145
146 # Text offset. This list is sorted numerically by address in order to
147 # provide a means to avoid/resolve conflicts in multi-arch kernels.
148 textofs-y       := 0x00008000
149 # We don't want the htc bootloader to corrupt kernel during resume
150 textofs-$(CONFIG_PM_H1940)      := 0x00108000
151 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
152 ifeq ($(CONFIG_ARCH_SA1100),y)
153 textofs-$(CONFIG_SA1111) := 0x00208000
154 endif
155 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
156 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
157 textofs-$(CONFIG_ARCH_MESON) := 0x00208000
158 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
159
160 # Machine directory name.  This list is sorted alphanumerically
161 # by CONFIG_* macro name.
162 machine-$(CONFIG_ARCH_ACTIONS)          += actions
163 machine-$(CONFIG_ARCH_ALPINE)           += alpine
164 machine-$(CONFIG_ARCH_ARTPEC)           += artpec
165 machine-$(CONFIG_ARCH_AT91)             += at91
166 machine-$(CONFIG_ARCH_AXXIA)            += axxia
167 machine-$(CONFIG_ARCH_BCM)              += bcm
168 machine-$(CONFIG_ARCH_BERLIN)           += berlin
169 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
170 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
171 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
172 machine-$(CONFIG_ARCH_DIGICOLOR)        += digicolor
173 machine-$(CONFIG_ARCH_DOVE)             += dove
174 machine-$(CONFIG_ARCH_EBSA110)          += ebsa110
175 machine-$(CONFIG_ARCH_EFM32)            += efm32
176 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
177 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
178 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
179 machine-$(CONFIG_ARCH_GEMINI)           += gemini
180 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
181 machine-$(CONFIG_ARCH_HISI)             += hisi
182 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
183 machine-$(CONFIG_ARCH_IOP13XX)          += iop13xx
184 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
185 machine-$(CONFIG_ARCH_IOP33X)           += iop33x
186 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
187 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
188 machine-$(CONFIG_ARCH_KS8695)           += ks8695
189 machine-$(CONFIG_ARCH_LPC18XX)          += lpc18xx
190 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
191 machine-$(CONFIG_ARCH_MESON)            += meson
192 machine-$(CONFIG_ARCH_MMP)              += mmp
193 machine-$(CONFIG_ARCH_MPS2)             += vexpress
194 machine-$(CONFIG_ARCH_MOXART)           += moxart
195 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
196 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
197 machine-$(CONFIG_ARCH_MXC)              += imx
198 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
199 machine-$(CONFIG_ARCH_MILBEAUT)         += milbeaut
200 machine-$(CONFIG_ARCH_MXS)              += mxs
201 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
202 machine-$(CONFIG_ARCH_NPCM)             += npcm
203 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
204 machine-$(CONFIG_ARCH_OXNAS)            += oxnas
205 machine-$(CONFIG_ARCH_OMAP1)            += omap1
206 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
207 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
208 machine-$(CONFIG_ARCH_PICOXCELL)        += picoxcell
209 machine-$(CONFIG_ARCH_PXA)              += pxa
210 machine-$(CONFIG_ARCH_QCOM)             += qcom
211 machine-$(CONFIG_ARCH_RDA)              += rda
212 machine-$(CONFIG_ARCH_REALVIEW)         += realview
213 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
214 machine-$(CONFIG_ARCH_RPC)              += rpc
215 machine-$(CONFIG_ARCH_S3C24XX)          += s3c24xx
216 machine-$(CONFIG_ARCH_S3C64XX)          += s3c64xx
217 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
218 machine-$(CONFIG_ARCH_SA1100)           += sa1100
219 machine-$(CONFIG_ARCH_RENESAS)          += shmobile
220 machine-$(CONFIG_ARCH_SIRF)             += prima2
221 machine-$(CONFIG_ARCH_SOCFPGA)          += socfpga
222 machine-$(CONFIG_ARCH_STI)              += sti
223 machine-$(CONFIG_ARCH_STM32)            += stm32
224 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
225 machine-$(CONFIG_ARCH_TANGO)            += tango
226 machine-$(CONFIG_ARCH_TEGRA)            += tegra
227 machine-$(CONFIG_ARCH_U300)             += u300
228 machine-$(CONFIG_ARCH_U8500)            += ux500
229 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
230 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
231 machine-$(CONFIG_ARCH_VT8500)           += vt8500
232 machine-$(CONFIG_ARCH_W90X900)          += w90x900
233 machine-$(CONFIG_ARCH_ZX)               += zx
234 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
235 machine-$(CONFIG_PLAT_SPEAR)            += spear
236
237 # Platform directory name.  This list is sorted alphanumerically
238 # by CONFIG_* macro name.
239 plat-$(CONFIG_ARCH_EXYNOS)      += samsung
240 plat-$(CONFIG_ARCH_OMAP)        += omap
241 plat-$(CONFIG_ARCH_S3C64XX)     += samsung
242 plat-$(CONFIG_ARCH_S5PV210)     += samsung
243 plat-$(CONFIG_PLAT_IOP)         += iop
244 plat-$(CONFIG_PLAT_ORION)       += orion
245 plat-$(CONFIG_PLAT_PXA)         += pxa
246 plat-$(CONFIG_PLAT_S3C24XX)     += samsung
247 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
248
249 ifeq ($(CONFIG_ARCH_EBSA110),y)
250 # This is what happens if you forget the IOCS16 line.
251 # PCMCIA cards stop working.
252 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
253 export CFLAGS_3c589_cs.o
254 endif
255
256 # The byte offset of the kernel image in RAM from the start of RAM.
257 TEXT_OFFSET := $(textofs-y)
258
259 # The first directory contains additional information for the boot setup code
260 ifneq ($(machine-y),)
261 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
262 else
263 MACHINE  :=
264 endif
265 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
266 MACHINE  :=
267 endif
268
269 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
270 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
271
272 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
273 ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
274 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
275 endif
276 endif
277
278 export  TEXT_OFFSET GZFLAGS MMUEXT
279
280 core-$(CONFIG_FPE_NWFPE)        += arch/arm/nwfpe/
281 # Put arch/arm/fastfpe/ to use this.
282 core-$(CONFIG_FPE_FASTFPE)      += $(patsubst $(srctree)/%,%,$(wildcard $(srctree)/arch/arm/fastfpe/))
283 core-$(CONFIG_VFP)              += arch/arm/vfp/
284 core-$(CONFIG_XEN)              += arch/arm/xen/
285 core-$(CONFIG_KVM_ARM_HOST)     += arch/arm/kvm/
286 core-$(CONFIG_VDSO)             += arch/arm/vdso/
287
288 # If we have a machine-specific directory, then include it in the build.
289 core-y                          += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
290 core-y                          += arch/arm/probes/
291 core-y                          += arch/arm/net/
292 core-y                          += arch/arm/crypto/
293 core-y                          += $(machdirs) $(platdirs)
294
295 # For cleaning
296 core-                           += $(patsubst %,arch/arm/mach-%/, $(machine-))
297 core-                           += $(patsubst %,arch/arm/plat-%/, $(plat-))
298
299 drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
300
301 libs-y                          := arch/arm/lib/ $(libs-y)
302
303 # Default target when executing plain make
304 boot := arch/arm/boot
305 ifeq ($(CONFIG_XIP_KERNEL),y)
306 KBUILD_IMAGE := $(boot)/xipImage
307 else
308 KBUILD_IMAGE := $(boot)/zImage
309 endif
310
311 ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
312 prepare: stack_protector_prepare
313 stack_protector_prepare: prepare0
314         $(eval KBUILD_CFLAGS += \
315                 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell        \
316                         awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\
317                                 include/generated/asm-offsets.h)        \
318                 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell     \
319                         awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\
320                                 include/generated/asm-offsets.h))
321 endif
322
323 all:    $(notdir $(KBUILD_IMAGE))
324
325
326 archheaders:
327         $(Q)$(MAKE) $(build)=arch/arm/tools uapi
328
329 archprepare:
330         $(Q)$(MAKE) $(build)=arch/arm/tools kapi
331
332 # Convert bzImage to zImage
333 bzImage: zImage
334
335 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
336 INSTALL_TARGETS = zinstall uinstall install
337
338 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
339
340 bootpImage uImage: zImage
341 zImage: Image
342
343 $(BOOT_TARGETS): vmlinux
344         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
345         @$(kecho) '  Kernel: $(boot)/$@ is ready'
346
347 $(INSTALL_TARGETS):
348         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
349
350 PHONY += vdso_install
351 vdso_install:
352 ifeq ($(CONFIG_VDSO),y)
353         $(Q)$(MAKE) $(build)=arch/arm/vdso $@
354 endif
355
356 # We use MRPROPER_FILES and CLEAN_FILES now
357 archclean:
358         $(Q)$(MAKE) $(clean)=$(boot)
359
360 # My testing targets (bypasses dependencies)
361 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
362
363
364 define archhelp
365   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
366   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
367   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
368   echo  '  uImage        - U-Boot wrapped zImage'
369   echo  '  bootpImage    - Combined zImage and initial RAM disk'
370   echo  '                  (supply initrd image via make variable INITRD=<path>)'
371   echo  '  install       - Install uncompressed kernel'
372   echo  '  zinstall      - Install compressed kernel'
373   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
374   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
375   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
376   echo  '                  install to $$(INSTALL_PATH) and run lilo'
377   echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
378 endef