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Paul Smith4f193362006-03-05 17:14:10 -05001#
2# This file is included by the global makefile so that you can add your own
3# architecture-specific flags and dependencies.
4#
Linus Torvalds1da177e2005-04-16 15:20:36 -07005# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
6# Licensed under the GPL
7#
8
9ARCH_DIR := arch/um
10OS := $(shell uname -s)
11# We require bash because the vmlinux link and loader script cpp use bash
12# features.
13SHELL := /bin/bash
14
15filechk_gen_header = $<
16
17core-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.
22SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \
Paolo 'Blaisorblade' Giarrussofbdf2162006-03-31 02:30:19 -080023 module.h vm-flags.h elf.h host_ldt.h
Linus Torvalds1da177e2005-04-16 15:20:36 -070024SYMLINK_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!
31ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
32 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
33
Linus Torvalds1da177e2005-04-16 15:20:36 -070034um-modes-$(CONFIG_MODE_TT) += tt
35um-modes-$(CONFIG_MODE_SKAS) += skas
36
37MODE_INCLUDE += $(foreach mode,$(um-modes-y),\
Gennady Sharapov4abfbf42006-01-18 17:42:44 -080038 -I$(srctree)/$(ARCH_DIR)/include/$(mode))
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
40MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\
41 $(srctree)/$(ARCH_DIR)/Makefile-$(mode))
42
43ifneq ($(MAKEFILES-INCL),)
44 include $(MAKEFILES-INCL)
45endif
46
47ARCH_INCLUDE := -I$(ARCH_DIR)/include
Al Virofd7aab92005-05-05 16:15:29 -070048ifneq ($(KBUILD_SRC),)
Al Virofd7aab92005-05-05 16:15:29 -070049ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
Al Virofd7aab92005-05-05 16:15:29 -070050endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070051SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
52
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080053# -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.
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020055#
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080056# 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.
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070060
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080061CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
62 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020063 -Din6addr_loopback=kernel_in6addr_loopback
64
Al Viro93ea5a5b2005-09-03 15:57:30 -070065AFLAGS += $(ARCH_INCLUDE)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070066
67USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
68USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
Jeff Dikeae173812005-11-07 00:58:57 -080069 $(MODE_INCLUDE) -D_FILE_OFFSET_BITS=64
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070070
Linus Torvalds1da177e2005-04-16 15:20:36 -070071# -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.
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080075# These apply to kernelspace only.
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Miklos Szerediee7be5d2006-01-14 13:20:44 -080077CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
78 -Dmktime=kernel_mktime
Linus Torvalds1da177e2005-04-16 15:20:36 -070079CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
80
Paolo 'Blaisorblade' Giarrusso20d00212005-07-14 00:33:43 -070081include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
82
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#This will adjust *FLAGS accordingly to the platform.
84include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
85
86# These are needed for clean and mrproper, since in that case .config is not
87# included; the values here are meaningless
88
89CONFIG_NEST_LEVEL ?= 0
90CONFIG_KERNEL_HALF_GIGS ?= 0
91
92SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
93
Paul Smith4f193362006-03-05 17:14:10 -050094PHONY += linux
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96all: linux
97
98linux: vmlinux
Jeff Dikea4b741e2006-05-01 12:16:06 -070099 @echo ' LINK $@'
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700100 $(Q)ln -f $< $@
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
102define archhelp
103 echo '* linux - Binary kernel image (./linux) - for backward'
104 echo ' compatibility only, this creates a hard link to the'
105 echo ' real kernel binary, the the "vmlinux" binary you'
106 echo ' find in the kernel root.'
107endef
108
Al Virofd7aab92005-05-05 16:15:29 -0700109ifneq ($(KBUILD_SRC),)
Jeff Dike08b178e2005-09-03 15:57:12 -0700110$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700111else
Jeff Dike08b178e2005-09-03 15:57:12 -0700112$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700113endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
Al Viroecba97d2005-09-28 22:27:23 +0100115archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h
116prepare: $(ARCH_DIR)/include/kern_constants.h
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117
118LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
119LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
120
Paolo 'Blaisorblade' Giarrusso275e6e12006-05-01 12:16:04 -0700121CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
122 $(call cc-option, -fno-stack-protector,) \
123 $(call cc-option, -fno-stack-protector-all,)
124
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
126CONFIG_KERNEL_STACK_ORDER ?= 2
127STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
128
129ifndef START
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700130 START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131endif
132
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700133CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700135 -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
136 -DKERNEL_STACK_SIZE=$(STACK_SIZE) \
Al Viro7b99edc2006-03-31 02:30:12 -0800137 -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap.o
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
139#The wrappers will select whether using "malloc" or the kernel allocator.
140LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
141
Paolo 'Blaisorblade' Giarrusso20d00212005-07-14 00:33:43 -0700142CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143define cmd_vmlinux__
144 $(CC) $(CFLAGS_vmlinux) -o $@ \
145 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
146 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
Paolo 'Blaisorblade' Giarrusso776cfeb2005-05-05 16:15:18 -0700147 -lutil \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
149 FORCE ,$^) ; rm -f linux
150endef
151
152#When cleaning we don't include .config, so we don't include
153#TT or skas makefiles and don't clean skas_ptregs.h.
154CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
Al Viroecba97d2005-09-28 22:27:23 +0100155 $(ARCH_DIR)/include/user_constants.h \
156 $(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157
Al Virocc70a402006-03-31 02:30:13 -0800158MRPROPER_FILES += $(ARCH_SYMLINKS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
160archclean:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
162 -o -name '*.gcov' \) -type f -print | xargs rm -f
163
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164$(SYMLINK_HEADERS):
165 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700166ifneq ($(KBUILD_SRC),)
Paolo 'Blaisorblade' Giarrusso40dbb862006-04-10 22:53:40 -0700167 $(Q)mkdir -p $(objtree)/include/asm-um
Paolo 'Blaisorblade' Giarrusso5cd10da2005-10-09 21:37:05 +0200168 $(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
Al Virofd7aab92005-05-05 16:15:29 -0700169else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170 $(Q)cd $(TOPDIR)/$(dir $@) ; \
171 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
Al Virofd7aab92005-05-05 16:15:29 -0700172endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173
174include/asm-um/arch:
175 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700176ifneq ($(KBUILD_SRC),)
Paolo 'Blaisorblade' Giarrusso40dbb862006-04-10 22:53:40 -0700177 $(Q)mkdir -p $(objtree)/include/asm-um
Al Virofd7aab92005-05-05 16:15:29 -0700178 $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch
179else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
Al Virofd7aab92005-05-05 16:15:29 -0700181endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
Jeff Dikec6b7a1e2006-02-01 03:06:22 -0800183$(objtree)/$(ARCH_DIR)/include:
184 @echo ' MKDIR $@'
185 $(Q)mkdir -p $@
186
187$(ARCH_DIR)/include/sysdep: $(objtree)/$(ARCH_DIR)/include
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700189ifneq ($(KBUILD_SRC),)
Al Viroecba97d2005-09-28 22:27:23 +0100190 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
Al Virofd7aab92005-05-05 16:15:29 -0700191else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
Al Virofd7aab92005-05-05 16:15:29 -0700193endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195$(ARCH_DIR)/os:
196 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700197ifneq ($(KBUILD_SRC),)
198 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
199else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
Al Virofd7aab92005-05-05 16:15:29 -0700201endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202
203# Generated files
204define filechk_umlconfig
205 sed 's/ CONFIG/ UML_CONFIG/'
206endef
207
Jeff Dike4ee189a2006-01-11 12:17:23 -0800208$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
209 $(call filechk,umlconfig)
210
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700211$(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE
212 $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@
Jeff Dike4ee189a2006-01-11 12:17:23 -0800213
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200214define filechk_gen-asm-offsets
215 (set -e; \
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200216 echo "/*"; \
217 echo " * DO NOT MODIFY."; \
218 echo " *"; \
219 echo " * This file was generated by arch/$(ARCH)/Makefile"; \
220 echo " *"; \
221 echo " */"; \
222 echo ""; \
223 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
Al Viroecba97d2005-09-28 22:27:23 +0100224 echo ""; )
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200225endef
226
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700227$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
Al Viro8d0b9dc2005-05-05 16:15:23 -0700228 $(call filechk,gen-asm-offsets)
229
Jeff Dikec6b7a1e2006-02-01 03:06:22 -0800230$(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include
Jeff Dike4ee189a2006-01-11 12:17:23 -0800231 @echo ' SYMLINK $@'
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700232 $(Q)ln -sf ../../../include/asm-um/asm-offsets.h $@
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Paolo 'Blaisorblade' Giarrusso275e6e12006-05-01 12:16:04 -0700234export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS