Commit | Line | Data |
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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 | # | |
1da177e4 LT |
5 | # Copyright (C) 2002 Jeff Dike (jdike@karaya.com) |
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) $(ARCH_DIR)/include/uml-config.h | |
33 | ||
1da177e4 LT |
34 | um-modes-$(CONFIG_MODE_TT) += tt |
35 | um-modes-$(CONFIG_MODE_SKAS) += skas | |
36 | ||
37 | MODE_INCLUDE += $(foreach mode,$(um-modes-y),\ | |
4abfbf40 | 38 | -I$(srctree)/$(ARCH_DIR)/include/$(mode)) |
1da177e4 LT |
39 | |
40 | MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\ | |
41 | $(srctree)/$(ARCH_DIR)/Makefile-$(mode)) | |
42 | ||
43 | ifneq ($(MAKEFILES-INCL),) | |
44 | include $(MAKEFILES-INCL) | |
45 | endif | |
46 | ||
47 | ARCH_INCLUDE := -I$(ARCH_DIR)/include | |
fd7aab9c | 48 | ifneq ($(KBUILD_SRC),) |
fd7aab9c | 49 | ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include |
fd7aab9c | 50 | endif |
1da177e4 LT |
51 | SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) |
52 | ||
98105d47 PBG |
53 | # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so |
54 | # named - it's a common symbol in libpcap, so we get a binary which crashes. | |
fd748104 | 55 | # |
98105d47 PBG |
56 | # Same things for in6addr_loopback and mktime - found in libc. For these two we |
57 | # only get link-time error, luckily. | |
58 | # | |
59 | # These apply to USER_CFLAGS to. | |
1da177e4 | 60 | |
98105d47 PBG |
61 | CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ |
62 | $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ | |
fd748104 PBG |
63 | -Din6addr_loopback=kernel_in6addr_loopback |
64 | ||
93ea5a5b | 65 | AFLAGS += $(ARCH_INCLUDE) |
1da177e4 LT |
66 | |
67 | USER_CFLAGS := $(patsubst -I%,,$(CFLAGS)) | |
68 | USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \ | |
ae173816 | 69 | $(MODE_INCLUDE) -D_FILE_OFFSET_BITS=64 |
ecc354a9 PBG |
70 | |
71 | # -Derrno=kernel_errno - This turns all kernel references to errno into | |
72 | # kernel_errno to separate them from the libc errno. This allows -fno-common | |
73 | # in CFLAGS. Otherwise, it would cause ld to complain about the two different | |
74 | # errnos. | |
98105d47 | 75 | # These apply to kernelspace only. |
ecc354a9 | 76 | |
ee7be5de MS |
77 | CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ |
78 | -Dmktime=kernel_mktime | |
1da177e4 LT |
79 | CFLAGS += $(call cc-option,-fno-unit-at-a-time,) |
80 | ||
20d00213 PBG |
81 | include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) |
82 | ||
1da177e4 LT |
83 | #This will adjust *FLAGS accordingly to the platform. |
84 | include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) | |
85 | ||
86 | # These are needed for clean and mrproper, since in that case .config is not | |
87 | # included; the values here are meaningless | |
88 | ||
89 | CONFIG_NEST_LEVEL ?= 0 | |
90 | CONFIG_KERNEL_HALF_GIGS ?= 0 | |
91 | ||
92 | SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000) | |
93 | ||
4f193362 | 94 | PHONY += linux |
1da177e4 LT |
95 | |
96 | all: linux | |
97 | ||
98 | linux: vmlinux | |
99 | ln -f $< $@ | |
100 | ||
101 | define archhelp | |
102 | echo '* linux - Binary kernel image (./linux) - for backward' | |
103 | echo ' compatibility only, this creates a hard link to the' | |
104 | echo ' real kernel binary, the the "vmlinux" binary you' | |
105 | echo ' find in the kernel root.' | |
106 | endef | |
107 | ||
fd7aab9c | 108 | ifneq ($(KBUILD_SRC),) |
08b178eb | 109 | $(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch) |
fd7aab9c | 110 | else |
08b178eb | 111 | $(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch) |
fd7aab9c | 112 | endif |
1da177e4 | 113 | |
ecba97d4 AV |
114 | archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h |
115 | prepare: $(ARCH_DIR)/include/kern_constants.h | |
1da177e4 LT |
116 | |
117 | LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static | |
118 | LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib | |
119 | ||
1da177e4 LT |
120 | CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT |
121 | CONFIG_KERNEL_STACK_ORDER ?= 2 | |
122 | STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) | |
123 | ||
124 | ifndef START | |
1c30385a | 125 | START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] ) |
1da177e4 LT |
126 | endif |
127 | ||
1c30385a | 128 | CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \ |
1da177e4 | 129 | -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ |
1c30385a PBG |
130 | -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \ |
131 | -DKERNEL_STACK_SIZE=$(STACK_SIZE) \ | |
7b99edc7 | 132 | -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap.o |
1da177e4 LT |
133 | |
134 | #The wrappers will select whether using "malloc" or the kernel allocator. | |
135 | LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc | |
136 | ||
20d00213 | 137 | CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) |
1da177e4 LT |
138 | define cmd_vmlinux__ |
139 | $(CC) $(CFLAGS_vmlinux) -o $@ \ | |
140 | -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ | |
141 | -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ | |
776cfebb | 142 | -lutil \ |
1da177e4 LT |
143 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \ |
144 | FORCE ,$^) ; rm -f linux | |
145 | endef | |
146 | ||
147 | #When cleaning we don't include .config, so we don't include | |
148 | #TT or skas makefiles and don't clean skas_ptregs.h. | |
149 | CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ | |
ecba97d4 AV |
150 | $(ARCH_DIR)/include/user_constants.h \ |
151 | $(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch | |
1da177e4 | 152 | |
cc70a40b | 153 | MRPROPER_FILES += $(ARCH_SYMLINKS) |
1da177e4 LT |
154 | |
155 | archclean: | |
1da177e4 LT |
156 | @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ |
157 | -o -name '*.gcov' \) -type f -print | xargs rm -f | |
158 | ||
1da177e4 LT |
159 | $(SYMLINK_HEADERS): |
160 | @echo ' SYMLINK $@' | |
fd7aab9c | 161 | ifneq ($(KBUILD_SRC),) |
40dbb867 | 162 | $(Q)mkdir -p $(objtree)/include/asm-um |
5cd10daa | 163 | $(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@ |
fd7aab9c | 164 | else |
1da177e4 LT |
165 | $(Q)cd $(TOPDIR)/$(dir $@) ; \ |
166 | ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) | |
fd7aab9c | 167 | endif |
1da177e4 LT |
168 | |
169 | include/asm-um/arch: | |
170 | @echo ' SYMLINK $@' | |
fd7aab9c | 171 | ifneq ($(KBUILD_SRC),) |
40dbb867 | 172 | $(Q)mkdir -p $(objtree)/include/asm-um |
fd7aab9c AV |
173 | $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch |
174 | else | |
1da177e4 | 175 | $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch |
fd7aab9c | 176 | endif |
1da177e4 | 177 | |
c6b7a1ed JD |
178 | $(objtree)/$(ARCH_DIR)/include: |
179 | @echo ' MKDIR $@' | |
180 | $(Q)mkdir -p $@ | |
181 | ||
182 | $(ARCH_DIR)/include/sysdep: $(objtree)/$(ARCH_DIR)/include | |
1da177e4 | 183 | @echo ' SYMLINK $@' |
fd7aab9c | 184 | ifneq ($(KBUILD_SRC),) |
ecba97d4 | 185 | $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep |
fd7aab9c | 186 | else |
1da177e4 | 187 | $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep |
fd7aab9c | 188 | endif |
1da177e4 LT |
189 | |
190 | $(ARCH_DIR)/os: | |
191 | @echo ' SYMLINK $@' | |
fd7aab9c AV |
192 | ifneq ($(KBUILD_SRC),) |
193 | $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os | |
194 | else | |
1da177e4 | 195 | $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os |
fd7aab9c | 196 | endif |
1da177e4 LT |
197 | |
198 | # Generated files | |
199 | define filechk_umlconfig | |
200 | sed 's/ CONFIG/ UML_CONFIG/' | |
201 | endef | |
202 | ||
4ee189a9 JD |
203 | $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h |
204 | $(call filechk,umlconfig) | |
205 | ||
206 | $(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c | |
207 | $(CC) $(USER_CFLAGS) -S -o $@ $< | |
208 | ||
f64a227b SR |
209 | define filechk_gen-asm-offsets |
210 | (set -e; \ | |
f64a227b SR |
211 | echo "/*"; \ |
212 | echo " * DO NOT MODIFY."; \ | |
213 | echo " *"; \ | |
214 | echo " * This file was generated by arch/$(ARCH)/Makefile"; \ | |
215 | echo " *"; \ | |
216 | echo " */"; \ | |
217 | echo ""; \ | |
218 | sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ | |
ecba97d4 | 219 | echo ""; ) |
f64a227b SR |
220 | endef |
221 | ||
ecba97d4 | 222 | $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/user-offsets.s |
8d0b9dc9 AV |
223 | $(call filechk,gen-asm-offsets) |
224 | ||
ecba97d4 | 225 | CLEAN_FILES += $(ARCH_DIR)/user-offsets.s |
8d0b9dc9 | 226 | |
c6b7a1ed | 227 | $(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include |
4ee189a9 JD |
228 | @echo ' SYMLINK $@' |
229 | $(Q) ln -sf ../../../include/asm-um/asm-offsets.h $@ | |
1da177e4 LT |
230 | |
231 | export SUBARCH USER_CFLAGS OS |