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1da177e4 LT |
1 | # |
2 | # Copyright (C) 2002 Jeff Dike (jdike@karaya.com) | |
3 | # Licensed under the GPL | |
4 | # | |
5 | ||
6 | ARCH_DIR := arch/um | |
7 | OS := $(shell uname -s) | |
8 | # We require bash because the vmlinux link and loader script cpp use bash | |
9 | # features. | |
10 | SHELL := /bin/bash | |
11 | ||
12 | filechk_gen_header = $< | |
13 | ||
14 | core-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. | |
19 | SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \ | |
e23181de | 20 | module.h vm-flags.h elf.h ldt.h |
1da177e4 LT |
21 | SYMLINK_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! | |
28 | ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \ | |
29 | $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h | |
30 | ||
1da177e4 LT |
31 | um-modes-$(CONFIG_MODE_TT) += tt |
32 | um-modes-$(CONFIG_MODE_SKAS) += skas | |
33 | ||
34 | MODE_INCLUDE += $(foreach mode,$(um-modes-y),\ | |
35 | -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include) | |
36 | ||
37 | MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\ | |
38 | $(srctree)/$(ARCH_DIR)/Makefile-$(mode)) | |
39 | ||
40 | ifneq ($(MAKEFILES-INCL),) | |
41 | include $(MAKEFILES-INCL) | |
42 | endif | |
43 | ||
44 | ARCH_INCLUDE := -I$(ARCH_DIR)/include | |
fd7aab9c | 45 | ifneq ($(KBUILD_SRC),) |
fd7aab9c | 46 | ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include |
fd7aab9c | 47 | endif |
1da177e4 LT |
48 | SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) |
49 | ||
ecc354a9 PBG |
50 | # -Dvmap=kernel_vmap affects everything, and prevents anything from |
51 | # referencing the libpcap.o symbol so named. | |
fd748104 PBG |
52 | # |
53 | # Same things for in6addr_loopback - found in libc. | |
1da177e4 LT |
54 | |
55 | CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ | |
fd748104 PBG |
56 | $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ |
57 | -Din6addr_loopback=kernel_in6addr_loopback | |
58 | ||
93ea5a5b | 59 | AFLAGS += $(ARCH_INCLUDE) |
1da177e4 LT |
60 | |
61 | USER_CFLAGS := $(patsubst -I%,,$(CFLAGS)) | |
62 | USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \ | |
ae173816 | 63 | $(MODE_INCLUDE) -D_FILE_OFFSET_BITS=64 |
ecc354a9 PBG |
64 | |
65 | # -Derrno=kernel_errno - This turns all kernel references to errno into | |
66 | # kernel_errno to separate them from the libc errno. This allows -fno-common | |
67 | # in CFLAGS. Otherwise, it would cause ld to complain about the two different | |
68 | # errnos. | |
69 | ||
1da177e4 LT |
70 | CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask |
71 | CFLAGS += $(call cc-option,-fno-unit-at-a-time,) | |
72 | ||
20d00213 PBG |
73 | include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) |
74 | ||
1da177e4 LT |
75 | #This will adjust *FLAGS accordingly to the platform. |
76 | include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) | |
77 | ||
78 | # These are needed for clean and mrproper, since in that case .config is not | |
79 | # included; the values here are meaningless | |
80 | ||
81 | CONFIG_NEST_LEVEL ?= 0 | |
82 | CONFIG_KERNEL_HALF_GIGS ?= 0 | |
83 | ||
84 | SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000) | |
85 | ||
1da177e4 LT |
86 | .PHONY: linux |
87 | ||
88 | all: linux | |
89 | ||
90 | linux: vmlinux | |
91 | ln -f $< $@ | |
92 | ||
93 | define archhelp | |
94 | echo '* linux - Binary kernel image (./linux) - for backward' | |
95 | echo ' compatibility only, this creates a hard link to the' | |
96 | echo ' real kernel binary, the the "vmlinux" binary you' | |
97 | echo ' find in the kernel root.' | |
98 | endef | |
99 | ||
fd7aab9c | 100 | ifneq ($(KBUILD_SRC),) |
08b178eb | 101 | $(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch) |
fd7aab9c | 102 | else |
08b178eb | 103 | $(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch) |
fd7aab9c | 104 | endif |
1da177e4 | 105 | |
ecba97d4 AV |
106 | archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h |
107 | prepare: $(ARCH_DIR)/include/kern_constants.h | |
1da177e4 LT |
108 | |
109 | LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static | |
110 | LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib | |
111 | ||
1da177e4 LT |
112 | CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT |
113 | CONFIG_KERNEL_STACK_ORDER ?= 2 | |
114 | STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) | |
115 | ||
116 | ifndef START | |
1c30385a | 117 | START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] ) |
1da177e4 LT |
118 | endif |
119 | ||
1c30385a | 120 | CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \ |
1da177e4 | 121 | -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ |
1c30385a PBG |
122 | -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \ |
123 | -DKERNEL_STACK_SIZE=$(STACK_SIZE) \ | |
124 | -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap_fin.o | |
1da177e4 LT |
125 | |
126 | #The wrappers will select whether using "malloc" or the kernel allocator. | |
127 | LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc | |
128 | ||
20d00213 | 129 | CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) |
1da177e4 LT |
130 | define cmd_vmlinux__ |
131 | $(CC) $(CFLAGS_vmlinux) -o $@ \ | |
132 | -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ | |
133 | -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ | |
776cfebb | 134 | -lutil \ |
1da177e4 LT |
135 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \ |
136 | FORCE ,$^) ; rm -f linux | |
137 | endef | |
138 | ||
139 | #When cleaning we don't include .config, so we don't include | |
140 | #TT or skas makefiles and don't clean skas_ptregs.h. | |
141 | CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ | |
ecba97d4 AV |
142 | $(ARCH_DIR)/include/user_constants.h \ |
143 | $(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch | |
1da177e4 LT |
144 | |
145 | MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \ | |
2d5cbf32 | 146 | $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os |
1da177e4 LT |
147 | |
148 | archclean: | |
1da177e4 LT |
149 | @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ |
150 | -o -name '*.gcov' \) -type f -print | xargs rm -f | |
151 | ||
1da177e4 LT |
152 | $(SYMLINK_HEADERS): |
153 | @echo ' SYMLINK $@' | |
fd7aab9c | 154 | ifneq ($(KBUILD_SRC),) |
5cd10daa | 155 | $(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@ |
fd7aab9c | 156 | else |
1da177e4 LT |
157 | $(Q)cd $(TOPDIR)/$(dir $@) ; \ |
158 | ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) | |
fd7aab9c | 159 | endif |
1da177e4 LT |
160 | |
161 | include/asm-um/arch: | |
162 | @echo ' SYMLINK $@' | |
fd7aab9c AV |
163 | ifneq ($(KBUILD_SRC),) |
164 | $(Q)mkdir -p include/asm-um | |
165 | $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch | |
166 | else | |
1da177e4 | 167 | $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch |
fd7aab9c | 168 | endif |
1da177e4 LT |
169 | |
170 | $(ARCH_DIR)/include/sysdep: | |
171 | @echo ' SYMLINK $@' | |
fd7aab9c AV |
172 | ifneq ($(KBUILD_SRC),) |
173 | $(Q)mkdir -p $(ARCH_DIR)/include | |
ecba97d4 | 174 | $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep |
fd7aab9c | 175 | else |
1da177e4 | 176 | $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep |
fd7aab9c | 177 | endif |
1da177e4 LT |
178 | |
179 | $(ARCH_DIR)/os: | |
180 | @echo ' SYMLINK $@' | |
fd7aab9c AV |
181 | ifneq ($(KBUILD_SRC),) |
182 | $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os | |
183 | else | |
1da177e4 | 184 | $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os |
fd7aab9c | 185 | endif |
1da177e4 LT |
186 | |
187 | # Generated files | |
188 | define filechk_umlconfig | |
189 | sed 's/ CONFIG/ UML_CONFIG/' | |
190 | endef | |
191 | ||
f64a227b SR |
192 | define filechk_gen-asm-offsets |
193 | (set -e; \ | |
f64a227b SR |
194 | echo "/*"; \ |
195 | echo " * DO NOT MODIFY."; \ | |
196 | echo " *"; \ | |
197 | echo " * This file was generated by arch/$(ARCH)/Makefile"; \ | |
198 | echo " *"; \ | |
199 | echo " */"; \ | |
200 | echo ""; \ | |
201 | sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ | |
ecba97d4 | 202 | echo ""; ) |
f64a227b SR |
203 | endef |
204 | ||
1da177e4 LT |
205 | $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h |
206 | $(call filechk,umlconfig) | |
207 | ||
8d0b9dc9 AV |
208 | $(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c |
209 | $(CC) $(USER_CFLAGS) -S -o $@ $< | |
210 | ||
ecba97d4 | 211 | $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/user-offsets.s |
8d0b9dc9 AV |
212 | $(call filechk,gen-asm-offsets) |
213 | ||
ecba97d4 | 214 | CLEAN_FILES += $(ARCH_DIR)/user-offsets.s |
8d0b9dc9 | 215 | |
a31769ed | 216 | $(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \ |
ecba97d4 | 217 | archprepare |
a31769ed AV |
218 | $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $< |
219 | ||
ecba97d4 | 220 | $(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/kernel-offsets.s |
a31769ed AV |
221 | $(call filechk,gen-asm-offsets) |
222 | ||
ecba97d4 | 223 | CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s |
1da177e4 LT |
224 | |
225 | export SUBARCH USER_CFLAGS OS |