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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 \ | |
20 | arch-signal.h module.h vm-flags.h | |
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 | ||
31 | GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h | |
32 | ||
33 | um-modes-$(CONFIG_MODE_TT) += tt | |
34 | um-modes-$(CONFIG_MODE_SKAS) += skas | |
35 | ||
36 | MODE_INCLUDE += $(foreach mode,$(um-modes-y),\ | |
37 | -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include) | |
38 | ||
39 | MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\ | |
40 | $(srctree)/$(ARCH_DIR)/Makefile-$(mode)) | |
41 | ||
42 | ifneq ($(MAKEFILES-INCL),) | |
43 | include $(MAKEFILES-INCL) | |
44 | endif | |
45 | ||
46 | ARCH_INCLUDE := -I$(ARCH_DIR)/include | |
47 | SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) | |
48 | ||
49 | include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) | |
50 | ||
51 | core-y += $(SUBARCH_CORE) | |
52 | libs-y += $(SUBARCH_LIBS) | |
53 | ||
54 | # -Derrno=kernel_errno - This turns all kernel references to errno into | |
55 | # kernel_errno to separate them from the libc errno. This allows -fno-common | |
56 | # in CFLAGS. Otherwise, it would cause ld to complain about the two different | |
57 | # errnos. | |
58 | ||
59 | CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ | |
60 | $(ARCH_INCLUDE) $(MODE_INCLUDE) | |
61 | ||
62 | USER_CFLAGS := $(patsubst -I%,,$(CFLAGS)) | |
63 | USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \ | |
64 | $(MODE_INCLUDE) $(ARCH_USER_CFLAGS) | |
65 | CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask | |
66 | CFLAGS += $(call cc-option,-fno-unit-at-a-time,) | |
67 | ||
68 | #This will adjust *FLAGS accordingly to the platform. | |
69 | include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) | |
70 | ||
71 | # These are needed for clean and mrproper, since in that case .config is not | |
72 | # included; the values here are meaningless | |
73 | ||
74 | CONFIG_NEST_LEVEL ?= 0 | |
75 | CONFIG_KERNEL_HALF_GIGS ?= 0 | |
76 | ||
77 | SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000) | |
78 | ||
79 | ifeq ($(CONFIG_MODE_SKAS), y) | |
80 | $(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h | |
81 | endif | |
82 | ||
83 | .PHONY: linux | |
84 | ||
85 | all: linux | |
86 | ||
87 | linux: vmlinux | |
88 | ln -f $< $@ | |
89 | ||
90 | define archhelp | |
91 | echo '* linux - Binary kernel image (./linux) - for backward' | |
92 | echo ' compatibility only, this creates a hard link to the' | |
93 | echo ' real kernel binary, the the "vmlinux" binary you' | |
94 | echo ' find in the kernel root.' | |
95 | endef | |
96 | ||
97 | $(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch) | |
98 | ||
03f81dc5 | 99 | prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) |
1da177e4 LT |
100 | |
101 | LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static | |
102 | LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib | |
103 | ||
1da177e4 LT |
104 | CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT |
105 | CONFIG_KERNEL_STACK_ORDER ?= 2 | |
106 | STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) | |
107 | ||
108 | ifndef START | |
109 | START = $$(($(TOP_ADDR) - $(SIZE))) | |
110 | endif | |
111 | ||
112 | CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \ | |
113 | -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ | |
114 | -DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE-y) \ | |
115 | -DKERNEL_STACK_SIZE=$(STACK_SIZE)) | |
116 | ||
117 | #The wrappers will select whether using "malloc" or the kernel allocator. | |
118 | LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc | |
119 | ||
120 | CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS) | |
121 | define cmd_vmlinux__ | |
122 | $(CC) $(CFLAGS_vmlinux) -o $@ \ | |
123 | -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ | |
124 | -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ | |
776cfebb | 125 | -lutil \ |
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126 | $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \ |
127 | FORCE ,$^) ; rm -f linux | |
128 | endef | |
129 | ||
130 | #When cleaning we don't include .config, so we don't include | |
131 | #TT or skas makefiles and don't clean skas_ptregs.h. | |
132 | CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ | |
133 | $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h | |
134 | ||
135 | MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \ | |
136 | $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \ | |
137 | $(ARCH_DIR)/Kconfig_arch | |
138 | ||
139 | archclean: | |
140 | $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util | |
141 | @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ | |
142 | -o -name '*.gcov' \) -type f -print | xargs rm -f | |
143 | ||
1da177e4 LT |
144 | $(SYMLINK_HEADERS): |
145 | @echo ' SYMLINK $@' | |
146 | $(Q)cd $(TOPDIR)/$(dir $@) ; \ | |
147 | ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) | |
148 | ||
149 | include/asm-um/arch: | |
150 | @echo ' SYMLINK $@' | |
151 | $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch | |
152 | ||
153 | $(ARCH_DIR)/include/sysdep: | |
154 | @echo ' SYMLINK $@' | |
155 | $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep | |
156 | ||
157 | $(ARCH_DIR)/os: | |
158 | @echo ' SYMLINK $@' | |
159 | $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os | |
160 | ||
161 | # Generated files | |
162 | define filechk_umlconfig | |
163 | sed 's/ CONFIG/ UML_CONFIG/' | |
164 | endef | |
165 | ||
166 | $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h | |
167 | $(call filechk,umlconfig) | |
168 | ||
169 | $(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task | |
170 | $(call filechk,gen_header) | |
171 | ||
fcddd72e | 172 | $(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants |
1da177e4 LT |
173 | $(call filechk,gen_header) |
174 | ||
175 | $(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants | |
176 | $(call filechk,gen_header) | |
177 | ||
178 | $(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs | |
179 | $(call filechk,gen_header) | |
180 | ||
fcddd72e | 181 | $(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ; |
1da177e4 LT |
182 | |
183 | $(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \ | |
184 | FORCE ; | |
185 | ||
186 | $(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ; | |
187 | ||
188 | $(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h FORCE | |
189 | $(Q)$(MAKE) $(build)=$@ | |
190 | ||
191 | $(ARCH_DIR)/kernel/skas/util: scripts_basic FORCE | |
192 | $(Q)$(MAKE) $(build)=$@ | |
193 | ||
fcddd72e | 194 | $(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE |
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195 | $(Q)$(MAKE) $(build)=$@ |
196 | ||
197 | export SUBARCH USER_CFLAGS OS |