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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | # # This file is included by the global makefile so that you can add your own # architecture-specific flags and dependencies. # # Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) # Licensed under the GPL # # select defconfig based on actual architecture ifeq ($(SUBARCH),x86) ifeq ($(shell uname -m),x86_64) KBUILD_DEFCONFIG := x86_64_defconfig else KBUILD_DEFCONFIG := i386_defconfig endif else KBUILD_DEFCONFIG := $(SUBARCH)_defconfig endif 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)/ MODE_INCLUDE += -I$(srctree)/$(ARCH_DIR)/include/shared/skas HEADER_ARCH := $(SUBARCH) ifneq ($(filter $(SUBARCH),x86 x86_64 i386),) HEADER_ARCH := x86 endif ifdef CONFIG_64BIT KBUILD_CFLAGS += -mcmodel=large endif HOST_DIR := arch/$(HEADER_ARCH) include $(ARCH_DIR)/Makefile-skas include $(HOST_DIR)/Makefile.um core-y += $(HOST_DIR)/um/ SHARED_HEADERS := $(ARCH_DIR)/include/shared ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS) ARCH_INCLUDE += -I$(srctree)/$(HOST_DIR)/um/shared KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/um # -Dvmap=kernel_vmap prevents anything from referencing the libpcap.o symbol so # named - it's a common symbol in libpcap, so we get a binary which crashes. # # Same things for in6addr_loopback and mktime - found in libc. For these two we # only get link-time error, luckily. # # These apply to USER_CFLAGS to. KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \ $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ -Din6addr_loopback=kernel_in6addr_loopback \ -Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr KBUILD_AFLAGS += $(ARCH_INCLUDE) USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \ $(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \ -D_FILE_OFFSET_BITS=64 -idirafter $(srctree)/include \ -idirafter $(obj)/include -D__KERNEL__ -D__UM_HOST__ #This will adjust *FLAGS accordingly to the platform. include $(ARCH_DIR)/Makefile-os-$(OS) KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_DIR)/include \ -I$(srctree)/$(HOST_DIR)/include/uapi \ -I$(HOST_DIR)/include/generated \ -I$(HOST_DIR)/include/generated/uapi # -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 KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different # errnos. # These apply to kernelspace only. # # strip leading and trailing whitespace to make the USER_CFLAGS removal of these # defines more robust KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)) KBUILD_CFLAGS += $(KERNEL_DEFINES) PHONY += linux all: linux linux: vmlinux @echo ' LINK $@' $(Q)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 "vmlinux" binary you' echo ' find in the kernel root.' endef KBUILD_KCONFIG := $(HOST_DIR)/um/Kconfig archheaders: $(Q)$(MAKE) KBUILD_SRC= ARCH=$(HEADER_ARCH) archheaders archprepare: include/generated/user_constants.h LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie) CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ $(call cc-option, -fno-stack-protector,) \ $(call cc-option, -fno-stack-protector-all,) # Options used by linker script export LDS_START := $(START) export LDS_ELF_ARCH := $(ELF_ARCH) export LDS_ELF_FORMAT := $(ELF_FORMAT) # The wrappers will select whether using "malloc" or the kernel allocator. LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt)) # Used by link-vmlinux.sh which has special support for um link export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) # 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 archclean: @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \ -o -name '*.gcov' \) -type f -print | xargs rm -f # Generated files $(HOST_DIR)/um/user-offsets.s: __headers FORCE $(Q)$(MAKE) $(build)=$(HOST_DIR)/um $@ define filechk_gen-asm-offsets (set -e; \ echo "/*"; \ echo " * DO NOT MODIFY."; \ echo " *"; \ echo " * This file was generated by arch/$(ARCH)/Makefile"; \ echo " *"; \ echo " */"; \ echo ""; \ sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ echo ""; ) endef include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s $(call filechk,gen-asm-offsets) export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH |