[PATCH] uml: reintroduce pcap support
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / um / Makefile
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1#
2# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3# Licensed under the GPL
4#
5
6ARCH_DIR := arch/um
7OS := $(shell uname -s)
8# We require bash because the vmlinux link and loader script cpp use bash
9# features.
10SHELL := /bin/bash
11
12filechk_gen_header = $<
13
14core-y += $(ARCH_DIR)/kernel/ \
15 $(ARCH_DIR)/drivers/ \
16 $(ARCH_DIR)/os-$(OS)/
17
18# Have to precede the include because the included Makefiles reference them.
19SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \
7c5131a5 20 module.h vm-flags.h elf.h
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21SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header))
22
23# XXX: The "os" symlink is only used by arch/um/include/os.h, which includes
24# ../os/include/file.h
25#
26# These are cleaned up during mrproper. Please DO NOT fix it again, this is
27# the Correct Thing(tm) to do!
28ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
29 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
30
31GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h
32
33um-modes-$(CONFIG_MODE_TT) += tt
34um-modes-$(CONFIG_MODE_SKAS) += skas
35
36MODE_INCLUDE += $(foreach mode,$(um-modes-y),\
37 -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include)
38
39MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\
40 $(srctree)/$(ARCH_DIR)/Makefile-$(mode))
41
42ifneq ($(MAKEFILES-INCL),)
43 include $(MAKEFILES-INCL)
44endif
45
46ARCH_INCLUDE := -I$(ARCH_DIR)/include
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47ifneq ($(KBUILD_SRC),)
48ARCH_INCLUDE += -I$(ARCH_DIR)/include2
49ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
50MRPROPER_DIRS += $(ARCH_DIR)/include2
51endif
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52SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
53
54include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
55
56core-y += $(SUBARCH_CORE)
57libs-y += $(SUBARCH_LIBS)
58
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59# -Dvmap=kernel_vmap affects everything, and prevents anything from
60# referencing the libpcap.o symbol so named.
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61
62CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
ecc354a9 63 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap
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64
65USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
66USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
67 $(MODE_INCLUDE) $(ARCH_USER_CFLAGS)
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68
69# -Derrno=kernel_errno - This turns all kernel references to errno into
70# kernel_errno to separate them from the libc errno. This allows -fno-common
71# in CFLAGS. Otherwise, it would cause ld to complain about the two different
72# errnos.
73
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74CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
75CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
76
77#This will adjust *FLAGS accordingly to the platform.
78include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
79
80# These are needed for clean and mrproper, since in that case .config is not
81# included; the values here are meaningless
82
83CONFIG_NEST_LEVEL ?= 0
84CONFIG_KERNEL_HALF_GIGS ?= 0
85
86SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
87
88ifeq ($(CONFIG_MODE_SKAS), y)
89$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
90endif
91
92.PHONY: linux
93
94all: linux
95
96linux: vmlinux
97 ln -f $< $@
98
99define archhelp
100 echo '* linux - Binary kernel image (./linux) - for backward'
101 echo ' compatibility only, this creates a hard link to the'
102 echo ' real kernel binary, the the "vmlinux" binary you'
103 echo ' find in the kernel root.'
104endef
105
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106ifneq ($(KBUILD_SRC),)
107$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig_$(SUBARCH) $(ARCH_DIR)/Kconfig_arch)
108CLEAN_FILES += $(ARCH_DIR)/Kconfig_arch
109else
1da177e4 110$(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch)
fd7aab9c 111endif
1da177e4 112
03f81dc5 113prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)
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114
115LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
116LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
117
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118CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
119CONFIG_KERNEL_STACK_ORDER ?= 2
120STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
121
122ifndef START
1c30385a 123 START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
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124endif
125
1c30385a 126CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
1da177e4 127 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
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128 -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
129 -DKERNEL_STACK_SIZE=$(STACK_SIZE) \
130 -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap_fin.o
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131
132#The wrappers will select whether using "malloc" or the kernel allocator.
133LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
134
135CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS)
136define cmd_vmlinux__
137 $(CC) $(CFLAGS_vmlinux) -o $@ \
138 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
139 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
776cfebb 140 -lutil \
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141 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
142 FORCE ,$^) ; rm -f linux
143endef
144
145#When cleaning we don't include .config, so we don't include
146#TT or skas makefiles and don't clean skas_ptregs.h.
147CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
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148 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \
149 $(ARCH_DIR)/include/user_constants.h
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150
151MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
152 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \
153 $(ARCH_DIR)/Kconfig_arch
154
155archclean:
156 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util
157 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
158 -o -name '*.gcov' \) -type f -print | xargs rm -f
159
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160$(SYMLINK_HEADERS):
161 @echo ' SYMLINK $@'
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162ifneq ($(KBUILD_SRC),)
163 ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
164else
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165 $(Q)cd $(TOPDIR)/$(dir $@) ; \
166 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
fd7aab9c 167endif
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168
169include/asm-um/arch:
170 @echo ' SYMLINK $@'
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171ifneq ($(KBUILD_SRC),)
172 $(Q)mkdir -p include/asm-um
173 $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch
174else
1da177e4 175 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
fd7aab9c 176endif
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177
178$(ARCH_DIR)/include/sysdep:
179 @echo ' SYMLINK $@'
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180ifneq ($(KBUILD_SRC),)
181 $(Q)mkdir -p $(ARCH_DIR)/include
182 $(Q)mkdir -p $(ARCH_DIR)/include2
183 $(Q)ln -fsn sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
184 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include2/sysdep
185else
1da177e4 186 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
fd7aab9c 187endif
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188
189$(ARCH_DIR)/os:
190 @echo ' SYMLINK $@'
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191ifneq ($(KBUILD_SRC),)
192 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
193else
1da177e4 194 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
fd7aab9c 195endif
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196
197# Generated files
198define filechk_umlconfig
199 sed 's/ CONFIG/ UML_CONFIG/'
200endef
201
202$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
203 $(call filechk,umlconfig)
204
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205$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
206 $(CC) $(USER_CFLAGS) -S -o $@ $<
207
208$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
209 $(call filechk,gen-asm-offsets)
210
211CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
212
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213$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
214 $(ARCH_SYMLINKS) \
215 $(SYS_DIR)/sc.h \
216 include/asm include/linux/version.h \
217 include/config/MARKER \
218 $(ARCH_DIR)/include/user_constants.h
219 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
220
221$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
222 $(call filechk,gen-asm-offsets)
223
224CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h
225
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226$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
227 $(call filechk,gen_header)
228
fcddd72e 229$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
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230 $(call filechk,gen_header)
231
232$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
233 $(call filechk,gen_header)
234
235$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
236 $(call filechk,gen_header)
237
fcddd72e 238$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
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239
240$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
241 FORCE ;
242
243$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
244
da998a2a 245$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE
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246 $(Q)$(MAKE) $(build)=$@
247
1cd3bc1c 248$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
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249 $(Q)$(MAKE) $(build)=$@
250
fcddd72e 251$(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE
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252 $(Q)$(MAKE) $(build)=$@
253
254export SUBARCH USER_CFLAGS OS