blob: cb4af9bf20747bf06b572c669589e1dd0d543c87 [file] [log] [blame]
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#
Jeff Dike4c9e1382007-10-16 01:26:54 -07005# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006# 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) $(ARCH_DIR)/include/uml-config.h
33
Jeff Dike42fda662007-10-16 01:26:50 -070034MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/skas
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
Jeff Dike42fda662007-10-16 01:26:50 -070036include $(srctree)/$(ARCH_DIR)/Makefile-skas
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
38ARCH_INCLUDE := -I$(ARCH_DIR)/include
Al Virofd7aab92005-05-05 16:15:29 -070039ifneq ($(KBUILD_SRC),)
Al Virofd7aab92005-05-05 16:15:29 -070040ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include
Al Virofd7aab92005-05-05 16:15:29 -070041endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070042SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
43
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080044# -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.
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020046#
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080047# 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.
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070051
Jeff Dike260c0cb2008-02-04 22:31:02 -080052KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080053 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
Jeff Dike818f6ef2007-10-16 01:26:45 -070054 -Din6addr_loopback=kernel_in6addr_loopback \
55 -Din6addr_any=kernel_in6addr_any
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020056
Sam Ravnborg222d3942007-10-15 21:59:31 +020057KBUILD_AFLAGS += $(ARCH_INCLUDE)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070058
akpm@osdl.orgd45e44d2006-10-29 22:46:42 -080059USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
Sam Ravnborga0f97e02007-10-14 22:21:35 +020060 $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
Jeff Dike260c0cb2008-02-04 22:31:02 -080061 $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64
akpm@osdl.orgd45e44d2006-10-29 22:46:42 -080062
63include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
64
65#This will adjust *FLAGS accordingly to the platform.
66include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070067
Linus Torvalds1da177e2005-04-16 15:20:36 -070068# -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
Sam Ravnborga0f97e02007-10-14 22:21:35 +020070# in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different
Linus Torvalds1da177e2005-04-16 15:20:36 -070071# errnos.
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080072# These apply to kernelspace only.
Jeff Dikef15cf512007-11-05 14:50:59 -080073#
74# strip leading and trailing whitespace to make the USER_CFLAGS removal of these
75# defines more robust
Linus Torvalds1da177e2005-04-16 15:20:36 -070076
Jeff Dikef15cf512007-11-05 14:50:59 -080077KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
78 -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
Sam Ravnborga0f97e02007-10-14 22:21:35 +020079KBUILD_CFLAGS += $(KERNEL_DEFINES)
80KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
Linus Torvalds1da177e2005-04-16 15:20:36 -070082# These are needed for clean and mrproper, since in that case .config is not
83# included; the values here are meaningless
84
85CONFIG_NEST_LEVEL ?= 0
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Jeff Dike42fda662007-10-16 01:26:50 -070087SIZE = ($(CONFIG_NEST_LEVEL) * 0x20000000)
Linus Torvalds1da177e2005-04-16 15:20:36 -070088
Paul Smith4f193362006-03-05 17:14:10 -050089PHONY += linux
Linus Torvalds1da177e2005-04-16 15:20:36 -070090
91all: linux
92
93linux: vmlinux
Jeff Dikea4b741e2006-05-01 12:16:06 -070094 @echo ' LINK $@'
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -070095 $(Q)ln -f $< $@
Linus Torvalds1da177e2005-04-16 15:20:36 -070096
97define archhelp
98 echo '* linux - Binary kernel image (./linux) - for backward'
99 echo ' compatibility only, this creates a hard link to the'
Matt LaPlante4b3f6862006-10-03 22:21:02 +0200100 echo ' real kernel binary, the "vmlinux" binary you'
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 echo ' find in the kernel root.'
102endef
103
Al Virofd7aab92005-05-05 16:15:29 -0700104ifneq ($(KBUILD_SRC),)
Jeff Dike08b178e2005-09-03 15:57:12 -0700105$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700106else
Jeff Dike08b178e2005-09-03 15:57:12 -0700107$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700108endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
Al Viroecba97d2005-09-28 22:27:23 +0100110archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h
111prepare: $(ARCH_DIR)/include/kern_constants.h
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112
113LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
114LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
115
Paolo 'Blaisorblade' Giarrusso275e6e12006-05-01 12:16:04 -0700116CFLAGS_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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120CONFIG_KERNEL_STACK_ORDER ?= 2
121STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
122
123ifndef START
Paolo 'Blaisorblade' Giarrusso1c303852005-07-14 00:33:38 -0700124 START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125endif
126
Jeff Dike42fda662007-10-16 01:26:50 -0700127CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
128 -DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
Jeff Dike4c9e1382007-10-16 01:26:54 -0700130# The wrappers will select whether using "malloc" or the kernel allocator.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
132
Jeff Dike260c0cb2008-02-04 22:31:02 -0800133LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt))
Jeff Dike0ba7fe02008-02-04 22:30:45 -0800134
135CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136define cmd_vmlinux__
137 $(CC) $(CFLAGS_vmlinux) -o $@ \
138 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
139 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
Paolo 'Blaisorblade' Giarrusso776cfeb2005-05-05 16:15:18 -0700140 -lutil \
Al Viro75473c12007-07-20 02:01:16 +0100141 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 FORCE ,$^) ; rm -f linux
143endef
144
Jeff Dike4c9e1382007-10-16 01:26:54 -0700145# When cleaning we don't include .config, so we don't include
146# TT or skas makefiles and don't clean skas_ptregs.h.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
Al Viroecba97d2005-09-28 22:27:23 +0100148 $(ARCH_DIR)/include/user_constants.h \
149 $(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
Al Virocc70a402006-03-31 02:30:13 -0800151MRPROPER_FILES += $(ARCH_SYMLINKS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153archclean:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
155 -o -name '*.gcov' \) -type f -print | xargs rm -f
156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157$(SYMLINK_HEADERS):
158 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700159ifneq ($(KBUILD_SRC),)
Paolo 'Blaisorblade' Giarrusso40dbb862006-04-10 22:53:40 -0700160 $(Q)mkdir -p $(objtree)/include/asm-um
Paolo 'Blaisorblade' Giarrusso5cd10da2005-10-09 21:37:05 +0200161 $(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
Al Virofd7aab92005-05-05 16:15:29 -0700162else
WANG Cong47afa1d2008-02-04 22:31:23 -0800163 $(Q)cd $(srctree)/$(dir $@) ; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
Al Virofd7aab92005-05-05 16:15:29 -0700165endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166
167include/asm-um/arch:
168 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700169ifneq ($(KBUILD_SRC),)
Paolo 'Blaisorblade' Giarrusso40dbb862006-04-10 22:53:40 -0700170 $(Q)mkdir -p $(objtree)/include/asm-um
Al Viro2b8232c2007-10-13 08:16:04 +0100171 $(Q)ln -fsn $(srctree)/include/asm-$(HEADER_ARCH) include/asm-um/arch
Al Virofd7aab92005-05-05 16:15:29 -0700172else
WANG Cong47afa1d2008-02-04 22:31:23 -0800173 $(Q)cd $(srctree)/include/asm-um && ln -fsn ../asm-$(HEADER_ARCH) arch
Al Virofd7aab92005-05-05 16:15:29 -0700174endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
Jeff Dikec6b7a1e2006-02-01 03:06:22 -0800176$(objtree)/$(ARCH_DIR)/include:
177 @echo ' MKDIR $@'
178 $(Q)mkdir -p $@
179
180$(ARCH_DIR)/include/sysdep: $(objtree)/$(ARCH_DIR)/include
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700182ifneq ($(KBUILD_SRC),)
Al Viroecba97d2005-09-28 22:27:23 +0100183 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
Al Virofd7aab92005-05-05 16:15:29 -0700184else
Jeff Dikefcbaa082007-11-14 16:58:42 -0800185 $(Q)cd $(ARCH_DIR)/include && ln -fsn sysdep-$(SUBARCH) sysdep
Al Virofd7aab92005-05-05 16:15:29 -0700186endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
188$(ARCH_DIR)/os:
189 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700190ifneq ($(KBUILD_SRC),)
191 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
192else
Jeff Dikefcbaa082007-11-14 16:58:42 -0800193 $(Q)cd $(ARCH_DIR) && ln -fsn os-$(OS) os
Al Virofd7aab92005-05-05 16:15:29 -0700194endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196# Generated files
197define filechk_umlconfig
198 sed 's/ CONFIG/ UML_CONFIG/'
199endef
200
Jeff Dike4ee189a2006-01-11 12:17:23 -0800201$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
202 $(call filechk,umlconfig)
203
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700204$(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE
205 $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@
Jeff Dike4ee189a2006-01-11 12:17:23 -0800206
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200207define filechk_gen-asm-offsets
208 (set -e; \
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200209 echo "/*"; \
210 echo " * DO NOT MODIFY."; \
211 echo " *"; \
212 echo " * This file was generated by arch/$(ARCH)/Makefile"; \
213 echo " *"; \
214 echo " */"; \
215 echo ""; \
216 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
Al Viroecba97d2005-09-28 22:27:23 +0100217 echo ""; )
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200218endef
219
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700220$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
Al Viro8d0b9dc2005-05-05 16:15:23 -0700221 $(call filechk,gen-asm-offsets)
222
Jeff Dikec6b7a1e2006-02-01 03:06:22 -0800223$(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include
Jeff Dike4ee189a2006-01-11 12:17:23 -0800224 @echo ' SYMLINK $@'
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700225 $(Q)ln -sf ../../../include/asm-um/asm-offsets.h $@
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226
Al Viro2b8232c2007-10-13 08:16:04 +0100227export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH