2006-03-05 15:14:10 -07:00
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies.
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#
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2007-10-16 02:26:54 -06:00
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# Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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2005-04-16 16:20:36 -06:00
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# Licensed under the GPL
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#
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2013-09-26 22:14:46 -06:00
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# select defconfig based on actual architecture
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ifeq ($(SUBARCH),x86)
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ifeq ($(shell uname -m),x86_64)
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KBUILD_DEFCONFIG := x86_64_defconfig
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else
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KBUILD_DEFCONFIG := i386_defconfig
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endif
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else
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KBUILD_DEFCONFIG := $(SUBARCH)_defconfig
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endif
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2005-04-16 16:20:36 -06:00
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ARCH_DIR := arch/um
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OS := $(shell uname -s)
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# We require bash because the vmlinux link and loader script cpp use bash
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# features.
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SHELL := /bin/bash
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filechk_gen_header = $<
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core-y += $(ARCH_DIR)/kernel/ \
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$(ARCH_DIR)/drivers/ \
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$(ARCH_DIR)/os-$(OS)/
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2008-08-17 11:48:37 -06:00
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MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas
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2005-04-16 16:20:36 -06:00
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2011-08-18 13:06:29 -06:00
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HEADER_ARCH := $(SUBARCH)
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2013-11-29 07:39:41 -07:00
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ifneq ($(filter $(SUBARCH),x86 x86_64 i386),)
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HEADER_ARCH := x86
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2011-08-18 13:06:29 -06:00
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endif
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2013-11-29 07:39:41 -07:00
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ifdef CONFIG_64BIT
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2012-01-24 12:09:12 -07:00
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KBUILD_CFLAGS += -mcmodel=large
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2011-08-18 13:06:29 -06:00
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endif
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2011-08-18 13:06:39 -06:00
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HOST_DIR := arch/$(HEADER_ARCH)
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2015-03-27 05:43:36 -06:00
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include $(ARCH_DIR)/Makefile-skas
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include $(HOST_DIR)/Makefile.um
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2011-08-18 13:06:39 -06:00
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core-y += $(HOST_DIR)/um/
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2005-04-16 16:20:36 -06:00
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2009-01-05 10:18:42 -07:00
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SHARED_HEADERS := $(ARCH_DIR)/include/shared
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ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS)
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2011-08-18 13:06:39 -06:00
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ARCH_INCLUDE += -I$(srctree)/$(HOST_DIR)/um/shared
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KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um
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2005-04-16 16:20:36 -06:00
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2006-02-01 04:06:25 -07:00
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# -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so
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# named - it's a common symbol in libpcap, so we get a binary which crashes.
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2005-09-21 10:39:32 -06:00
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#
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2006-02-01 04:06:25 -07:00
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# Same things for in6addr_loopback and mktime - found in libc. For these two we
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# only get link-time error, luckily.
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#
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# These apply to USER_CFLAGS to.
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2005-04-16 16:20:36 -06:00
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2012-02-11 03:39:56 -07:00
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KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \
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2006-02-01 04:06:25 -07:00
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$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
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2007-10-16 02:26:45 -06:00
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-Din6addr_loopback=kernel_in6addr_loopback \
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2011-09-14 17:21:38 -06:00
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-Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr
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2005-09-21 10:39:32 -06:00
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2007-10-15 13:59:31 -06:00
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KBUILD_AFLAGS += $(ARCH_INCLUDE)
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2005-04-16 16:20:36 -06:00
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2015-05-31 11:50:57 -06:00
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USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \
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$(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \
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-D_FILE_OFFSET_BITS=64 -idirafter include \
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-D__KERNEL__ -D__UM_HOST__
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2006-10-29 23:46:42 -07:00
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#This will adjust *FLAGS accordingly to the platform.
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2015-03-27 05:43:36 -06:00
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include $(ARCH_DIR)/Makefile-os-$(OS)
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2005-07-14 01:33:41 -06:00
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2011-12-05 17:03:30 -07:00
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KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \
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2012-10-02 11:01:26 -06:00
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-I$(srctree)/$(HOST_DIR)/include/uapi \
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-I$(HOST_DIR)/include/generated \
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-I$(HOST_DIR)/include/generated/uapi
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2008-08-17 20:54:55 -06:00
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2005-07-14 01:33:41 -06:00
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# -Derrno=kernel_errno - This turns all kernel references to errno into
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# kernel_errno to separate them from the libc errno. This allows -fno-common
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2007-10-14 14:21:35 -06:00
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# in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different
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2005-07-14 01:33:41 -06:00
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# errnos.
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2006-02-01 04:06:25 -07:00
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# These apply to kernelspace only.
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2007-11-05 15:50:59 -07:00
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#
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# strip leading and trailing whitespace to make the USER_CFLAGS removal of these
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# defines more robust
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2005-07-14 01:33:41 -06:00
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2007-11-05 15:50:59 -07:00
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KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
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-Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
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2007-10-14 14:21:35 -06:00
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KBUILD_CFLAGS += $(KERNEL_DEFINES)
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2005-04-16 16:20:36 -06:00
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2006-03-05 15:14:10 -07:00
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PHONY += linux
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2005-04-16 16:20:36 -06:00
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all: linux
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linux: vmlinux
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2006-05-01 13:16:06 -06:00
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@echo ' LINK $@'
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2006-05-01 13:16:03 -06:00
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$(Q)ln -f $< $@
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2005-04-16 16:20:36 -06:00
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define archhelp
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echo '* linux - Binary kernel image (./linux) - for backward'
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echo ' compatibility only, this creates a hard link to the'
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2006-10-03 14:21:02 -06:00
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echo ' real kernel binary, the "vmlinux" binary you'
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2005-04-16 16:20:36 -06:00
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echo ' find in the kernel root.'
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endef
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2011-08-18 13:06:39 -06:00
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KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig
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2005-04-16 16:20:36 -06:00
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2011-12-05 17:03:30 -07:00
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archheaders:
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2014-06-05 09:44:44 -06:00
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$(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders
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2011-12-05 17:03:30 -07:00
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2011-08-18 13:01:19 -06:00
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archprepare: include/generated/user_constants.h
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2005-04-16 16:20:36 -06:00
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LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
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LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
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2006-05-01 13:16:04 -06:00
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CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
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$(call cc-option, -fno-stack-protector,) \
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$(call cc-option, -fno-stack-protector-all,)
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2009-09-20 04:28:22 -06:00
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# Options used by linker script
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export LDS_START := $(START)
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export LDS_ELF_ARCH := $(ELF_ARCH)
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export LDS_ELF_FORMAT := $(ELF_FORMAT)
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2005-04-16 16:20:36 -06:00
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2007-10-16 02:26:54 -06:00
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# The wrappers will select whether using "malloc" or the kernel allocator.
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2005-04-16 16:20:36 -06:00
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LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
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2008-02-04 23:31:02 -07:00
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LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt))
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2008-02-04 23:30:45 -07:00
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2012-05-05 02:18:41 -06:00
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# Used by link-vmlinux.sh which has special support for um link
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export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE)
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2005-04-16 16:20:36 -06:00
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2007-10-16 02:26:54 -06:00
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# When cleaning we don't include .config, so we don't include
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# TT or skas makefiles and don't clean skas_ptregs.h.
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2011-08-18 13:01:49 -06:00
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CLEAN_FILES += linux x.i gmon.out
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2005-04-16 16:20:36 -06:00
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archclean:
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@find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
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-o -name '*.gcov' \) -type f -print | xargs rm -f
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# Generated files
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[PATCH] uml: fix missing KBUILD_BASENAME
2.6.15-mm1 caused kernel-offsets.c to stop compiling with a syntax error in a
header. The problem was with KBUILD_BASENAME, which didn't get a definition
with the by-hand compilation in the main UML Makefile.
This was OK before since the expansion was syntactically the same as the
KBUILD_BASENAME token. With -mm1, the expansion is now a quote-delimited
string, so there needs to be a definition of it.
Since kernel-offsets.c is basically the same as other arches' asm-offsets.c,
and those seem to build OK, this patch turns kernel-offsets.c into
asm-offsets.c. kernel-offsets.c is in arch/um/sys-$(SUBARCH), i.e. sys-i386
and sys-x86_64, while kbuild expects it to be in arch/um/kernel.
kernel-offsets.c is moved to
arch/um/include/sysdep-$(SUBARCH)/kernel-offsets.h, which is included by
arch/um/kernel/asm-offsets.c. With that, include/asm-um/asm-offsets.h is
generated automatically. kernel-offsets.h continues to exist because it needs
to be accessible to userspace UML code, and include/asm-um isn't. So, a
symlink is made from arch/um/include/kernel-offsets.h to
include/asm-um/asm-offsets.h.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 13:17:23 -07:00
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2011-12-05 17:06:02 -07:00
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$(HOST_DIR)/um/user-offsets.s: __headers FORCE
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2011-08-18 13:06:39 -06:00
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$(Q)$(MAKE) $(build)=$(HOST_DIR)/um $@
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[PATCH] uml: fix missing KBUILD_BASENAME
2.6.15-mm1 caused kernel-offsets.c to stop compiling with a syntax error in a
header. The problem was with KBUILD_BASENAME, which didn't get a definition
with the by-hand compilation in the main UML Makefile.
This was OK before since the expansion was syntactically the same as the
KBUILD_BASENAME token. With -mm1, the expansion is now a quote-delimited
string, so there needs to be a definition of it.
Since kernel-offsets.c is basically the same as other arches' asm-offsets.c,
and those seem to build OK, this patch turns kernel-offsets.c into
asm-offsets.c. kernel-offsets.c is in arch/um/sys-$(SUBARCH), i.e. sys-i386
and sys-x86_64, while kbuild expects it to be in arch/um/kernel.
kernel-offsets.c is moved to
arch/um/include/sysdep-$(SUBARCH)/kernel-offsets.h, which is included by
arch/um/kernel/asm-offsets.c. With that, include/asm-um/asm-offsets.h is
generated automatically. kernel-offsets.h continues to exist because it needs
to be accessible to userspace UML code, and include/asm-um isn't. So, a
symlink is made from arch/um/include/kernel-offsets.h to
include/asm-um/asm-offsets.h.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 13:17:23 -07:00
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2005-09-09 15:10:54 -06:00
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define filechk_gen-asm-offsets
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(set -e; \
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echo "/*"; \
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echo " * DO NOT MODIFY."; \
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echo " *"; \
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echo " * This file was generated by arch/$(ARCH)/Makefile"; \
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echo " *"; \
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echo " */"; \
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echo ""; \
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sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
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2005-09-28 15:27:23 -06:00
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echo ""; )
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2005-09-09 15:10:54 -06:00
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endef
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2011-08-18 13:06:39 -06:00
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include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s
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2005-05-05 17:15:23 -06:00
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$(call filechk,gen-asm-offsets)
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2011-08-18 13:06:39 -06:00
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export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
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