[deliverable/linux.git] / arch / um / Makefile

# 
# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
# Licensed under the GPL
#

ARCH_DIR := arch/um
OS := $(shell uname -s)
# We require bash because the vmlinux link and loader script cpp use bash
# features.
SHELL := /bin/bash

filechk_gen_header = $<

core-y			+= $(ARCH_DIR)/kernel/		\
			   $(ARCH_DIR)/drivers/		\
			   $(ARCH_DIR)/os-$(OS)/

# Have to precede the include because the included Makefiles reference them.
SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \
	arch-signal.h module.h vm-flags.h
SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header))

# XXX: The "os" symlink is only used by arch/um/include/os.h, which includes
# ../os/include/file.h
#
# These are cleaned up during mrproper. Please DO NOT fix it again, this is
# the Correct Thing(tm) to do!
ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
	$(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h

GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h

um-modes-$(CONFIG_MODE_TT) += tt
um-modes-$(CONFIG_MODE_SKAS) += skas

MODE_INCLUDE	+= $(foreach mode,$(um-modes-y),\
		   -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include)

MAKEFILES-INCL	+= $(foreach mode,$(um-modes-y),\
		   $(srctree)/$(ARCH_DIR)/Makefile-$(mode))

ifneq ($(MAKEFILES-INCL),)
  include $(MAKEFILES-INCL)
endif

ARCH_INCLUDE	:= -I$(ARCH_DIR)/include
SYS_DIR		:= $(ARCH_DIR)/include/sysdep-$(SUBARCH)

include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)

core-y += $(SUBARCH_CORE)
libs-y += $(SUBARCH_LIBS)

# -Derrno=kernel_errno - This turns all kernel references to errno into
# kernel_errno to separate them from the libc errno.  This allows -fno-common
# in CFLAGS.  Otherwise, it would cause ld to complain about the two different
# errnos.

CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
	$(ARCH_INCLUDE) $(MODE_INCLUDE)

USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
	$(MODE_INCLUDE) $(ARCH_USER_CFLAGS)
CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
CFLAGS += $(call cc-option,-fno-unit-at-a-time,)

#This will adjust *FLAGS accordingly to the platform.
include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)

# These are needed for clean and mrproper, since in that case .config is not
# included; the values here are meaningless

CONFIG_NEST_LEVEL ?= 0
CONFIG_KERNEL_HALF_GIGS ?= 0

SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)

ifeq ($(CONFIG_MODE_SKAS), y)
$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
endif

.PHONY: linux

all: linux

linux: vmlinux
	ln -f $< $@

define archhelp
  echo '* linux		- Binary kernel image (./linux) - for backward'
  echo '		   compatibility only, this creates a hard link to the'
  echo '		   real kernel binary, the the "vmlinux" binary you'
  echo '		   find in the kernel root.'
endef

$(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch)

prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS)

LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib

CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
CONFIG_KERNEL_STACK_ORDER ?= 2
STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )

ifndef START
  START = $$(($(TOP_ADDR) - $(SIZE)))
endif

CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \
	-DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
	-DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE-y) \
	-DKERNEL_STACK_SIZE=$(STACK_SIZE))

#The wrappers will select whether using "malloc" or the kernel allocator.
LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc

CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS)
define cmd_vmlinux__
	$(CC) $(CFLAGS_vmlinux) -o $@ \
	-Wl,-T,$(vmlinux-lds) $(vmlinux-init) \
	-Wl,--start-group $(vmlinux-main) -Wl,--end-group \
	-lutil \
	$(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
	FORCE ,$^) ; rm -f linux
endef

#When cleaning we don't include .config, so we don't include
#TT or skas makefiles and don't clean skas_ptregs.h.
CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \
	$(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h

MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
	$(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \
	$(ARCH_DIR)/Kconfig_arch

archclean:
	$(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util
	@find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
		-o -name '*.gcov' \) -type f -print | xargs rm -f

$(SYMLINK_HEADERS):
	@echo '  SYMLINK $@'
	$(Q)cd $(TOPDIR)/$(dir $@) ; \
	ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)

include/asm-um/arch:
	@echo '  SYMLINK $@'
	$(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch

$(ARCH_DIR)/include/sysdep:
	@echo '  SYMLINK $@'
	$(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep

$(ARCH_DIR)/os:
	@echo '  SYMLINK $@'
	$(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os

# Generated files
define filechk_umlconfig
	sed 's/ CONFIG/ UML_CONFIG/'
endef

$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
	$(call filechk,umlconfig)

$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
	$(CC) $(USER_CFLAGS) -S -o $@ $<

$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
	$(call filechk,gen-asm-offsets)

CLEAN_FILES += $(ARCH_DIR)/user-offsets.s  $(ARCH_DIR)/user-offsets.h

$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
				   $(ARCH_SYMLINKS) \
				   $(SYS_DIR)/sc.h \
				   include/asm include/linux/version.h \
				   include/config/MARKER \
				   $(ARCH_DIR)/include/user_constants.h
	$(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<

$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
	$(call filechk,gen-asm-offsets)

CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s  $(ARCH_DIR)/kernel-offsets.h

$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
	$(call filechk,gen_header)

$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
	$(call filechk,gen_header)

$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
	$(call filechk,gen_header)

$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
	$(call filechk,gen_header)

$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;

$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
	FORCE ;

$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;

$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE
	$(Q)$(MAKE) $(build)=$@

$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
	$(Q)$(MAKE) $(build)=$@

$(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE
	$(Q)$(MAKE) $(build)=$@

export SUBARCH USER_CFLAGS OS
Commit	Line	Data
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 \
1da177e4 LT	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
8d0b9dc9 AV	169	$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c
	170	$(CC) $(USER_CFLAGS) -S -o $@ $<
	171
	172	$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s
	173	$(call filechk,gen-asm-offsets)
	174
	175	CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h
	176
a31769ed AV	177	$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \
	178	$(ARCH_SYMLINKS) \
	179	$(SYS_DIR)/sc.h \
	180	include/asm include/linux/version.h \
	181	include/config/MARKER \
	182	$(ARCH_DIR)/include/user_constants.h
	183	$(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $<
	184
	185	$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s
	186	$(call filechk,gen-asm-offsets)
	187
	188	CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h
	189
1da177e4 LT	190	$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
	191	$(call filechk,gen_header)
	192
fcddd72e	193	$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants
1da177e4 LT	194	$(call filechk,gen_header)
	195
	196	$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants
	197	$(call filechk,gen_header)
	198
	199	$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs
	200	$(call filechk,gen_header)
	201
fcddd72e	202	$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ;
1da177e4 LT	203
	204	$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
	205	FORCE ;
	206
	207	$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
	208
da998a2a	209	$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE
1da177e4 LT	210	$(Q)$(MAKE) $(build)=$@
1da177e4 LT	211
1cd3bc1c	212	$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
1da177e4 LT	213	$(Q)$(MAKE) $(build)=$@
1da177e4 LT	214
fcddd72e	215	$(ARCH_DIR)/os-$(OS)/util: scripts_basic FORCE
1da177e4 LT	216	$(Q)$(MAKE) $(build)=$@
	217
	218	export SUBARCH USER_CFLAGS OS