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4f193362 PS |
1 | # |
2 | # This file is included by the global makefile so that you can add your own | |
3 | # architecture-specific flags and dependencies. | |
4 | # | |
4c9e1385 | 5 | # Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
1da177e4 LT |
6 | # Licensed under the GPL |
7 | # | |
8 | ||
9 | ARCH_DIR := arch/um | |
10 | OS := $(shell uname -s) | |
11 | # We require bash because the vmlinux link and loader script cpp use bash | |
12 | # features. | |
13 | SHELL := /bin/bash | |
14 | ||
15 | filechk_gen_header = $< | |
16 | ||
17 | core-y += $(ARCH_DIR)/kernel/ \ | |
18 | $(ARCH_DIR)/drivers/ \ | |
19 | $(ARCH_DIR)/os-$(OS)/ | |
20 | ||
21 | # Have to precede the include because the included Makefiles reference them. | |
22 | SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \ | |
fbdf2161 | 23 | module.h vm-flags.h elf.h host_ldt.h |
1da177e4 LT |
24 | SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header)) |
25 | ||
26 | # XXX: The "os" symlink is only used by arch/um/include/os.h, which includes | |
27 | # ../os/include/file.h | |
28 | # | |
29 | # These are cleaned up during mrproper. Please DO NOT fix it again, this is | |
30 | # the Correct Thing(tm) to do! | |
31 | ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \ | |
32 | $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h | |
33 | ||
42fda663 | 34 | MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/skas |
1da177e4 | 35 | |
42fda663 | 36 | include $(srctree)/$(ARCH_DIR)/Makefile-skas |
1da177e4 LT |
37 | |
38 | ARCH_INCLUDE := -I$(ARCH_DIR)/include | |
fd7aab9c | 39 | ifneq ($(KBUILD_SRC),) |
fd7aab9c | 40 | ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include |
fd7aab9c | 41 | endif |
1da177e4 LT |
42 | SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) |
43 | ||
98105d47 PBG |
44 | # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so |
45 | # named - it's a common symbol in libpcap, so we get a binary which crashes. | |
fd748104 | 46 | # |
98105d47 PBG |
47 | # Same things for in6addr_loopback and mktime - found in libc. For these two we |
48 | # only get link-time error, luckily. | |
49 | # | |
50 | # These apply to USER_CFLAGS to. | |
1da177e4 | 51 | |
260c0cb8 | 52 | KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ |
98105d47 | 53 | $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ |
818f6ef4 JD |
54 | -Din6addr_loopback=kernel_in6addr_loopback \ |
55 | -Din6addr_any=kernel_in6addr_any | |
fd748104 | 56 | |
222d394d | 57 | KBUILD_AFLAGS += $(ARCH_INCLUDE) |
1da177e4 | 58 | |
d45e44d4 | 59 | USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\ |
a0f97e06 | 60 | $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ |
260c0cb8 | 61 | $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 |
d45e44d4 | 62 | |
63 | include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) | |
64 | ||
65 | #This will adjust *FLAGS accordingly to the platform. | |
66 | include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) | |
ecc354a9 PBG |
67 | |
68 | # -Derrno=kernel_errno - This turns all kernel references to errno into | |
69 | # kernel_errno to separate them from the libc errno. This allows -fno-common | |
a0f97e06 | 70 | # in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different |
ecc354a9 | 71 | # errnos. |
98105d47 | 72 | # These apply to kernelspace only. |
f15cf515 JD |
73 | # |
74 | # strip leading and trailing whitespace to make the USER_CFLAGS removal of these | |
75 | # defines more robust | |
ecc354a9 | 76 | |
f15cf515 JD |
77 | KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ |
78 | -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)) | |
a0f97e06 SR |
79 | KBUILD_CFLAGS += $(KERNEL_DEFINES) |
80 | KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,) | |
1da177e4 | 81 | |
1da177e4 LT |
82 | # These are needed for clean and mrproper, since in that case .config is not |
83 | # included; the values here are meaningless | |
84 | ||
85 | CONFIG_NEST_LEVEL ?= 0 | |
1da177e4 | 86 | |
42fda663 | 87 | SIZE = ($(CONFIG_NEST_LEVEL) * 0x20000000) |
1da177e4 | 88 | |
4f193362 | 89 | PHONY += linux |
1da177e4 LT |
90 | |
91 | all: linux | |
92 | ||
93 | linux: vmlinux | |
a4b741e3 | 94 | @echo ' LINK $@' |
cb8aa3d2 | 95 | $(Q)ln -f $< $@ |
1da177e4 LT |
96 | |
97 | define archhelp | |
98 | echo '* linux - Binary kernel image (./linux) - for backward' | |
99 | echo ' compatibility only, this creates a hard link to the' | |
4b3f686d | 100 | echo ' real kernel binary, the "vmlinux" binary you' |
1da177e4 LT |
101 | echo ' find in the kernel root.' |
102 | endef | |
103 | ||
fd7aab9c | 104 | ifneq ($(KBUILD_SRC),) |
08b178eb | 105 | $(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch) |
fd7aab9c | 106 | else |
08b178eb | 107 | $(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch) |
fd7aab9c | 108 | endif |
1da177e4 | 109 | |
ecba97d4 AV |
110 | archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h |
111 | prepare: $(ARCH_DIR)/include/kern_constants.h | |
1da177e4 LT |
112 | |
113 | LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static | |
114 | LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib | |
115 | ||
275e6e1e PBG |
116 | CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ |
117 | $(call cc-option, -fno-stack-protector,) \ | |
118 | $(call cc-option, -fno-stack-protector-all,) | |
119 | ||
1da177e4 LT |
120 | CONFIG_KERNEL_STACK_ORDER ?= 2 |
121 | STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) | |
122 | ||
123 | ifndef START | |
1c30385a | 124 | START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] ) |
1da177e4 LT |
125 | endif |
126 | ||
42fda663 JD |
127 | CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ |
128 | -DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE) | |
1da177e4 | 129 | |
4c9e1385 | 130 | # The wrappers will select whether using "malloc" or the kernel allocator. |
1da177e4 LT |
131 | LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc |
132 | ||
260c0cb8 | 133 | LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt)) |
0ba7fe03 JD |
134 | |
135 | CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) | |
1da177e4 LT |
136 | define 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 \ |
75473c1d | 141 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o \ |
1da177e4 LT |
142 | FORCE ,$^) ; rm -f linux |
143 | endef | |
144 | ||
4c9e1385 JD |
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. | |
1da177e4 | 147 | CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ |
ecba97d4 AV |
148 | $(ARCH_DIR)/include/user_constants.h \ |
149 | $(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch | |
1da177e4 | 150 | |
cc70a40b | 151 | MRPROPER_FILES += $(ARCH_SYMLINKS) |
1da177e4 LT |
152 | |
153 | archclean: | |
1da177e4 LT |
154 | @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ |
155 | -o -name '*.gcov' \) -type f -print | xargs rm -f | |
156 | ||
1da177e4 LT |
157 | $(SYMLINK_HEADERS): |
158 | @echo ' SYMLINK $@' | |
fd7aab9c | 159 | ifneq ($(KBUILD_SRC),) |
40dbb867 | 160 | $(Q)mkdir -p $(objtree)/include/asm-um |
5cd10daa | 161 | $(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@ |
fd7aab9c | 162 | else |
47afa1d5 | 163 | $(Q)cd $(srctree)/$(dir $@) ; \ |
1da177e4 | 164 | ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) |
fd7aab9c | 165 | endif |
1da177e4 LT |
166 | |
167 | include/asm-um/arch: | |
168 | @echo ' SYMLINK $@' | |
fd7aab9c | 169 | ifneq ($(KBUILD_SRC),) |
40dbb867 | 170 | $(Q)mkdir -p $(objtree)/include/asm-um |
2b8232ce | 171 | $(Q)ln -fsn $(srctree)/include/asm-$(HEADER_ARCH) include/asm-um/arch |
fd7aab9c | 172 | else |
47afa1d5 | 173 | $(Q)cd $(srctree)/include/asm-um && ln -fsn ../asm-$(HEADER_ARCH) arch |
fd7aab9c | 174 | endif |
1da177e4 | 175 | |
c6b7a1ed JD |
176 | $(objtree)/$(ARCH_DIR)/include: |
177 | @echo ' MKDIR $@' | |
178 | $(Q)mkdir -p $@ | |
179 | ||
180 | $(ARCH_DIR)/include/sysdep: $(objtree)/$(ARCH_DIR)/include | |
1da177e4 | 181 | @echo ' SYMLINK $@' |
fd7aab9c | 182 | ifneq ($(KBUILD_SRC),) |
ecba97d4 | 183 | $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep |
fd7aab9c | 184 | else |
fcbaa088 | 185 | $(Q)cd $(ARCH_DIR)/include && ln -fsn sysdep-$(SUBARCH) sysdep |
fd7aab9c | 186 | endif |
1da177e4 LT |
187 | |
188 | $(ARCH_DIR)/os: | |
189 | @echo ' SYMLINK $@' | |
fd7aab9c AV |
190 | ifneq ($(KBUILD_SRC),) |
191 | $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os | |
192 | else | |
fcbaa088 | 193 | $(Q)cd $(ARCH_DIR) && ln -fsn os-$(OS) os |
fd7aab9c | 194 | endif |
1da177e4 LT |
195 | |
196 | # Generated files | |
197 | define filechk_umlconfig | |
198 | sed 's/ CONFIG/ UML_CONFIG/' | |
199 | endef | |
200 | ||
4ee189a9 JD |
201 | $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h |
202 | $(call filechk,umlconfig) | |
203 | ||
cb8aa3d2 PBG |
204 | $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE |
205 | $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@ | |
4ee189a9 | 206 | |
f64a227b SR |
207 | define filechk_gen-asm-offsets |
208 | (set -e; \ | |
f64a227b SR |
209 | echo "/*"; \ |
210 | echo " * DO NOT MODIFY."; \ | |
211 | echo " *"; \ | |
212 | echo " * This file was generated by arch/$(ARCH)/Makefile"; \ | |
213 | echo " *"; \ | |
214 | echo " */"; \ | |
215 | echo ""; \ | |
216 | sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ | |
ecba97d4 | 217 | echo ""; ) |
f64a227b SR |
218 | endef |
219 | ||
cb8aa3d2 | 220 | $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s |
8d0b9dc9 AV |
221 | $(call filechk,gen-asm-offsets) |
222 | ||
c6b7a1ed | 223 | $(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include |
4ee189a9 | 224 | @echo ' SYMLINK $@' |
cb8aa3d2 | 225 | $(Q)ln -sf ../../../include/asm-um/asm-offsets.h $@ |
1da177e4 | 226 | |
2b8232ce | 227 | export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH |