1# 2# Copyright (C) 2002 Jeff Dike (jdike@karaya.com) 3# Licensed under the GPL 4# 5 6ARCH_DIR := arch/um 7OS := $(shell uname -s) 8# We require bash because the vmlinux link and loader script cpp use bash 9# features. 10SHELL := /bin/bash 11 12filechk_gen_header = $< 13 14core-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. 19SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \ 20 module.h vm-flags.h elf.h 21SYMLINK_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! 28ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \ 29 $(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h 30 31GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h 32 33um-modes-$(CONFIG_MODE_TT) += tt 34um-modes-$(CONFIG_MODE_SKAS) += skas 35 36MODE_INCLUDE += $(foreach mode,$(um-modes-y),\ 37 -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include) 38 39MAKEFILES-INCL += $(foreach mode,$(um-modes-y),\ 40 $(srctree)/$(ARCH_DIR)/Makefile-$(mode)) 41 42ifneq ($(MAKEFILES-INCL),) 43 include $(MAKEFILES-INCL) 44endif 45 46ARCH_INCLUDE := -I$(ARCH_DIR)/include 47ifneq ($(KBUILD_SRC),) 48ARCH_INCLUDE += -I$(ARCH_DIR)/include2 49ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include 50MRPROPER_DIRS += $(ARCH_DIR)/include2 51endif 52SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) 53 54# -Dvmap=kernel_vmap affects everything, and prevents anything from 55# referencing the libpcap.o symbol so named. 56 57CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ 58 $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap 59AFLAGS += $(ARCH_INCLUDE) 60 61USER_CFLAGS := $(patsubst -I%,,$(CFLAGS)) 62USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \ 63 $(MODE_INCLUDE) 64 65# -Derrno=kernel_errno - This turns all kernel references to errno into 66# kernel_errno to separate them from the libc errno. This allows -fno-common 67# in CFLAGS. Otherwise, it would cause ld to complain about the two different 68# errnos. 69 70CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask 71CFLAGS += $(call cc-option,-fno-unit-at-a-time,) 72 73include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) 74 75#This will adjust *FLAGS accordingly to the platform. 76include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) 77 78# These are needed for clean and mrproper, since in that case .config is not 79# included; the values here are meaningless 80 81CONFIG_NEST_LEVEL ?= 0 82CONFIG_KERNEL_HALF_GIGS ?= 0 83 84SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000) 85 86ifeq ($(CONFIG_MODE_SKAS), y) 87$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h 88endif 89 90.PHONY: linux 91 92all: linux 93 94linux: vmlinux 95 ln -f $< $@ 96 97define archhelp 98 echo '* linux - Binary kernel image (./linux) - for backward' 99 echo ' compatibility only, this creates a hard link to the' 100 echo ' real kernel binary, the the "vmlinux" binary you' 101 echo ' find in the kernel root.' 102endef 103 104ifneq ($(KBUILD_SRC),) 105$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch) 106CLEAN_FILES += $(ARCH_DIR)/Kconfig.arch 107else 108$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch) 109endif 110 111prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) 112 113LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static 114LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib 115 116CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT 117CONFIG_KERNEL_STACK_ORDER ?= 2 118STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) 119 120ifndef START 121 START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] ) 122endif 123 124CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \ 125 -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \ 126 -DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \ 127 -DKERNEL_STACK_SIZE=$(STACK_SIZE) \ 128 -DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap_fin.o 129 130#The wrappers will select whether using "malloc" or the kernel allocator. 131LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc 132 133CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) 134define cmd_vmlinux__ 135 $(CC) $(CFLAGS_vmlinux) -o $@ \ 136 -Wl,-T,$(vmlinux-lds) $(vmlinux-init) \ 137 -Wl,--start-group $(vmlinux-main) -Wl,--end-group \ 138 -lutil \ 139 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \ 140 FORCE ,$^) ; rm -f linux 141endef 142 143#When cleaning we don't include .config, so we don't include 144#TT or skas makefiles and don't clean skas_ptregs.h. 145CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/include/uml-config.h \ 146 $(GEN_HEADERS) $(ARCH_DIR)/include/skas_ptregs.h \ 147 $(ARCH_DIR)/include/user_constants.h 148 149MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \ 150 $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS)) $(ARCH_DIR)/os \ 151 $(ARCH_DIR)/Kconfig.arch 152 153archclean: 154 $(Q)$(MAKE) $(clean)=$(ARCH_DIR)/util 155 @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ 156 -o -name '*.gcov' \) -type f -print | xargs rm -f 157 158$(SYMLINK_HEADERS): 159 @echo ' SYMLINK $@' 160ifneq ($(KBUILD_SRC),) 161 ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@ 162else 163 $(Q)cd $(TOPDIR)/$(dir $@) ; \ 164 ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@) 165endif 166 167include/asm-um/arch: 168 @echo ' SYMLINK $@' 169ifneq ($(KBUILD_SRC),) 170 $(Q)mkdir -p include/asm-um 171 $(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch 172else 173 $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch 174endif 175 176$(ARCH_DIR)/include/sysdep: 177 @echo ' SYMLINK $@' 178ifneq ($(KBUILD_SRC),) 179 $(Q)mkdir -p $(ARCH_DIR)/include 180 $(Q)mkdir -p $(ARCH_DIR)/include2 181 $(Q)ln -fsn sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep 182 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include2/sysdep 183else 184 $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep 185endif 186 187$(ARCH_DIR)/os: 188 @echo ' SYMLINK $@' 189ifneq ($(KBUILD_SRC),) 190 $(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os 191else 192 $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os 193endif 194 195# Generated files 196define filechk_umlconfig 197 sed 's/ CONFIG/ UML_CONFIG/' 198endef 199 200$(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h 201 $(call filechk,umlconfig) 202 203$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c 204 $(CC) $(USER_CFLAGS) -S -o $@ $< 205 206$(ARCH_DIR)/user-offsets.h: $(ARCH_DIR)/user-offsets.s 207 $(call filechk,gen-asm-offsets) 208 209CLEAN_FILES += $(ARCH_DIR)/user-offsets.s $(ARCH_DIR)/user-offsets.h 210 211$(ARCH_DIR)/kernel-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/kernel-offsets.c \ 212 $(ARCH_SYMLINKS) \ 213 $(SYS_DIR)/sc.h \ 214 include/asm include/linux/version.h \ 215 include/config/MARKER \ 216 $(ARCH_DIR)/include/user_constants.h 217 $(CC) $(CFLAGS) $(NOSTDINC_FLAGS) $(CPPFLAGS) -S -o $@ $< 218 219$(ARCH_DIR)/kernel-offsets.h: $(ARCH_DIR)/kernel-offsets.s 220 $(call filechk,gen-asm-offsets) 221 222CLEAN_FILES += $(ARCH_DIR)/kernel-offsets.s $(ARCH_DIR)/kernel-offsets.h 223 224$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task 225 $(call filechk,gen_header) 226 227$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/os-$(OS)/util/mk_user_constants 228 $(call filechk,gen_header) 229 230$(ARCH_DIR)/include/kern_constants.h: $(ARCH_DIR)/util/mk_constants 231 $(call filechk,gen_header) 232 233$(ARCH_DIR)/include/skas_ptregs.h: $(ARCH_DIR)/kernel/skas/util/mk_ptregs 234 $(call filechk,gen_header) 235 236$(ARCH_DIR)/os-$(OS)/util/mk_user_constants: $(ARCH_DIR)/os-$(OS)/util FORCE ; 237 238$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \ 239 FORCE ; 240 241$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ; 242 243$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h $(ARCH_DIR)/kernel-offsets.h FORCE 244 $(Q)$(MAKE) $(build)=$@ 245 246$(ARCH_DIR)/kernel/skas/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE 247 $(Q)$(MAKE) $(build)=$@ 248 249$(ARCH_DIR)/os-$(OS)/util: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE 250 $(Q)$(MAKE) $(build)=$@ 251 252export SUBARCH USER_CFLAGS OS 253