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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#
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
Al Viro8ede0bd2008-08-17 19:13:17 -040024SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),$(ARCH_DIR)/include/asm/$(header))
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
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!
Al Viro8ede0bd2008-08-17 19:13:17 -040031ARCH_SYMLINKS = $(ARCH_DIR)/include/asm/arch $(ARCH_DIR)/include/shared/sysdep $(ARCH_DIR)/os \
Al Viro8569c912008-08-17 13:48:37 -040032 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/shared/uml-config.h
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
Al Viro8569c912008-08-17 13:48:37 -040034MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/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
Al Viro8569c912008-08-17 13:48:37 -040038ARCH_INCLUDE := -I$(ARCH_DIR)/include/shared
Al Virofd7aab92005-05-05 16:15:29 -070039ifneq ($(KBUILD_SRC),)
Al Viro8569c912008-08-17 13:48:37 -040040ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared
Al Viro8ede0bd2008-08-17 19:13:17 -040041KBUILD_CPPFLAGS += -I$(ARCH_DIR)/include # for arch symlink
Al Virofd7aab92005-05-05 16:15:29 -070042endif
Al Viro8569c912008-08-17 13:48:37 -040043SYS_DIR := $(ARCH_DIR)/include/shared/sysdep-$(SUBARCH)
Linus Torvalds1da177e2005-04-16 15:20:36 -070044
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080045# -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
46# named - it's a common symbol in libpcap, so we get a binary which crashes.
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020047#
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080048# Same things for in6addr_loopback and mktime - found in libc. For these two we
49# only get link-time error, luckily.
50#
51# These apply to USER_CFLAGS to.
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070052
Jeff Dike260c0cb2008-02-04 22:31:02 -080053KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080054 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
Jeff Dike818f6ef2007-10-16 01:26:45 -070055 -Din6addr_loopback=kernel_in6addr_loopback \
56 -Din6addr_any=kernel_in6addr_any
Paolo 'Blaisorblade' Giarrussofd748102005-09-21 18:39:32 +020057
Sam Ravnborg222d3942007-10-15 21:59:31 +020058KBUILD_AFLAGS += $(ARCH_INCLUDE)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070059
akpm@osdl.orgd45e44d2006-10-29 22:46:42 -080060USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
Sam Ravnborga0f97e02007-10-14 22:21:35 +020061 $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
Jeff Dike260c0cb2008-02-04 22:31:02 -080062 $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64
akpm@osdl.orgd45e44d2006-10-29 22:46:42 -080063
64include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
65
66#This will adjust *FLAGS accordingly to the platform.
67include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
Paolo 'Blaisorblade' Giarrussoecc354a2005-07-14 00:33:41 -070068
Al Viro1de15022008-08-17 22:54:55 -040069KBUILD_CPPFLAGS += -I$(srctree)/arch/$(HEADER_ARCH)/include
70
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
Sam Ravnborga0f97e02007-10-14 22:21:35 +020073# in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different
Linus Torvalds1da177e2005-04-16 15:20:36 -070074# errnos.
Paolo 'Blaisorblade' Giarrusso98105d42006-02-01 03:06:25 -080075# These apply to kernelspace only.
Jeff Dikef15cf512007-11-05 14:50:59 -080076#
77# strip leading and trailing whitespace to make the USER_CFLAGS removal of these
78# defines more robust
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Jeff Dikef15cf512007-11-05 14:50:59 -080080KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
81 -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
Sam Ravnborga0f97e02007-10-14 22:21:35 +020082KBUILD_CFLAGS += $(KERNEL_DEFINES)
Linus Torvalds1da177e2005-04-16 15:20:36 -070083
Paul Smith4f193362006-03-05 17:14:10 -050084PHONY += linux
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
86all: linux
87
88linux: vmlinux
Jeff Dikea4b741e2006-05-01 12:16:06 -070089 @echo ' LINK $@'
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -070090 $(Q)ln -f $< $@
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92define archhelp
93 echo '* linux - Binary kernel image (./linux) - for backward'
94 echo ' compatibility only, this creates a hard link to the'
Matt LaPlante4b3f6862006-10-03 22:21:02 +020095 echo ' real kernel binary, the "vmlinux" binary you'
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 echo ' find in the kernel root.'
97endef
98
Al Virofd7aab92005-05-05 16:15:29 -070099ifneq ($(KBUILD_SRC),)
Jeff Dike08b178e2005-09-03 15:57:12 -0700100$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700101else
Al Viro8569c912008-08-17 13:48:37 -0400102$(shell ln -fsn Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch)
Al Virofd7aab92005-05-05 16:15:29 -0700103endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
Al Viro8569c912008-08-17 13:48:37 -0400105archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/shared/user_constants.h
106prepare: $(ARCH_DIR)/include/shared/kern_constants.h
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
108LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
109LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
110
Paolo 'Blaisorblade' Giarrusso275e6e12006-05-01 12:16:04 -0700111CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
112 $(call cc-option, -fno-stack-protector,) \
113 $(call cc-option, -fno-stack-protector-all,)
114
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115CONFIG_KERNEL_STACK_ORDER ?= 2
116STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
117
Jeff Dike42fda662007-10-16 01:26:50 -0700118CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
119 -DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
Jeff Dike4c9e1382007-10-16 01:26:54 -0700121# The wrappers will select whether using "malloc" or the kernel allocator.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
123
Jeff Dike260c0cb2008-02-04 22:31:02 -0800124LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt))
Jeff Dike0ba7fe02008-02-04 22:30:45 -0800125
126CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127define cmd_vmlinux__
128 $(CC) $(CFLAGS_vmlinux) -o $@ \
129 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
130 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \
Paolo 'Blaisorblade' Giarrusso776cfeb2005-05-05 16:15:18 -0700131 -lutil \
Al Viro75473c12007-07-20 02:01:16 +0100132 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 FORCE ,$^) ; rm -f linux
134endef
135
Jeff Dike4c9e1382007-10-16 01:26:54 -0700136# When cleaning we don't include .config, so we don't include
137# TT or skas makefiles and don't clean skas_ptregs.h.
Al Viro8569c912008-08-17 13:48:37 -0400138CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/shared/uml-config.h \
139 $(ARCH_DIR)/include/shared/user_constants.h \
140 $(ARCH_DIR)/include/shared/kern_constants.h $(ARCH_DIR)/Kconfig.arch
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
Al Virocc70a402006-03-31 02:30:13 -0800142MRPROPER_FILES += $(ARCH_SYMLINKS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143
144archclean:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
146 -o -name '*.gcov' \) -type f -print | xargs rm -f
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148$(SYMLINK_HEADERS):
149 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700150ifneq ($(KBUILD_SRC),)
Al Viro8ede0bd2008-08-17 19:13:17 -0400151 $(Q)mkdir -p $(objtree)/$(ARCH_DIR)/include/asm
152 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/asm/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
Al Virofd7aab92005-05-05 16:15:29 -0700153else
Al Viro8569c912008-08-17 13:48:37 -0400154 $(Q)ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
Al Virofd7aab92005-05-05 16:15:29 -0700155endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
Al Viro8ede0bd2008-08-17 19:13:17 -0400157$(ARCH_DIR)/include/asm/arch:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700159ifneq ($(KBUILD_SRC),)
Al Viro8ede0bd2008-08-17 19:13:17 -0400160 $(Q)mkdir -p $(objtree)/$(ARCH_DIR)/include/asm
Al Virobb898552008-08-17 21:05:42 -0400161 $(Q)ln -fsn $(srctree)/arch/$(HEADER_ARCH)/include/asm $@
Al Virofd7aab92005-05-05 16:15:29 -0700162else
Al Virobb898552008-08-17 21:05:42 -0400163 $(Q)ln -fsn ../../../$(HEADER_ARCH)/include/asm $@
Al Virofd7aab92005-05-05 16:15:29 -0700164endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
Al Viro8569c912008-08-17 13:48:37 -0400166$(objtree)/$(ARCH_DIR)/include/shared:
Jeff Dikec6b7a1e2006-02-01 03:06:22 -0800167 @echo ' MKDIR $@'
168 $(Q)mkdir -p $@
169
Al Viro8569c912008-08-17 13:48:37 -0400170$(ARCH_DIR)/include/shared/sysdep: $(objtree)/$(ARCH_DIR)/include/shared
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700172ifneq ($(KBUILD_SRC),)
Al Viro8569c912008-08-17 13:48:37 -0400173 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/shared/sysdep-$(SUBARCH) $@
Al Virofd7aab92005-05-05 16:15:29 -0700174else
Al Viro8569c912008-08-17 13:48:37 -0400175 $(Q)ln -fsn sysdep-$(SUBARCH) $@
Al Virofd7aab92005-05-05 16:15:29 -0700176endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
178$(ARCH_DIR)/os:
179 @echo ' SYMLINK $@'
Al Virofd7aab92005-05-05 16:15:29 -0700180ifneq ($(KBUILD_SRC),)
Al Viro8569c912008-08-17 13:48:37 -0400181 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $@
Al Virofd7aab92005-05-05 16:15:29 -0700182else
Al Viro8569c912008-08-17 13:48:37 -0400183 $(Q)ln -fsn os-$(OS) $@
Al Virofd7aab92005-05-05 16:15:29 -0700184endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185
186# Generated files
187define filechk_umlconfig
188 sed 's/ CONFIG/ UML_CONFIG/'
189endef
190
Al Viro8569c912008-08-17 13:48:37 -0400191$(ARCH_DIR)/include/shared/uml-config.h : include/linux/autoconf.h
Jeff Dike4ee189a2006-01-11 12:17:23 -0800192 $(call filechk,umlconfig)
193
Paolo 'Blaisorblade' Giarrussocb8aa3d2006-05-01 12:16:03 -0700194$(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE
195 $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@
Jeff Dike4ee189a2006-01-11 12:17:23 -0800196
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200197define filechk_gen-asm-offsets
198 (set -e; \
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200199 echo "/*"; \
200 echo " * DO NOT MODIFY."; \
201 echo " *"; \
202 echo " * This file was generated by arch/$(ARCH)/Makefile"; \
203 echo " *"; \
204 echo " */"; \
205 echo ""; \
206 sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
Al Viroecba97d2005-09-28 22:27:23 +0100207 echo ""; )
Sam Ravnborgf64a2272005-09-09 23:10:54 +0200208endef
209
Al Viro8569c912008-08-17 13:48:37 -0400210$(ARCH_DIR)/include/shared/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
Al Viro8d0b9dc2005-05-05 16:15:23 -0700211 $(call filechk,gen-asm-offsets)
212
Al Viro8569c912008-08-17 13:48:37 -0400213$(ARCH_DIR)/include/shared/kern_constants.h: $(objtree)/$(ARCH_DIR)/include/shared
Jeff Dike4ee189a2006-01-11 12:17:23 -0800214 @echo ' SYMLINK $@'
Al Viro8ede0bd2008-08-17 19:13:17 -0400215 $(Q)ln -sf ../../../../include/asm/asm-offsets.h $@
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216
Al Viro2b8232c2007-10-13 08:16:04 +0100217export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH