mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-11-18 23:54:26 +08:00
22409f9c80
We need to make asm-offsets.h contents visible for objects built with userland headers. Instead of creating a symlink, just have the file with equivalent include (relative to location of header) created once. That kills the last symlink used in arch/um builds. Additionally, both generated headers can become dependencies of archprepare now, killing the misuse of prepare. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
156 lines
5.0 KiB
Makefile
156 lines
5.0 KiB
Makefile
#
|
|
# 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
|
|
#
|
|
|
|
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
|
|
|
|
include $(srctree)/$(ARCH_DIR)/Makefile-skas
|
|
|
|
SHARED_HEADERS := $(ARCH_DIR)/include/shared
|
|
ARCH_INCLUDE := -I$(srctree)/$(SHARED_HEADERS)
|
|
ARCH_INCLUDE += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)/shared
|
|
ifneq ($(KBUILD_SRC),)
|
|
ARCH_INCLUDE += -I$(SHARED_HEADERS)
|
|
endif
|
|
KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)
|
|
|
|
# -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) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
|
|
$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
|
|
-Din6addr_loopback=kernel_in6addr_loopback \
|
|
-Din6addr_any=kernel_in6addr_any
|
|
|
|
KBUILD_AFLAGS += $(ARCH_INCLUDE)
|
|
|
|
USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
|
|
$(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
|
|
$(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64
|
|
|
|
include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
|
|
|
|
#This will adjust *FLAGS accordingly to the platform.
|
|
include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
|
|
|
|
KBUILD_CPPFLAGS += -I$(srctree)/arch/$(HEADER_ARCH)/include
|
|
|
|
# -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 $< $@
|
|
|
|
define archhelp
|
|
echo '* linux - Binary kernel image (./linux) - for backward'
|
|
echo ' compatibility only, this creates a hard link to the'
|
|
echo ' real kernel binary, the "vmlinux" binary you'
|
|
echo ' find in the kernel root.'
|
|
endef
|
|
|
|
KBUILD_KCONFIG := arch/um/Kconfig.$(HEADER_ARCH)
|
|
|
|
archprepare: $(SHARED_HEADERS)/user_constants.h
|
|
archprepare: $(SHARED_HEADERS)/kern_constants.h
|
|
|
|
LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
|
|
LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
|
|
|
|
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,)
|
|
|
|
CONFIG_KERNEL_STACK_ORDER ?= 2
|
|
STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
|
|
|
|
CPPFLAGS_vmlinux.lds = -U$(SUBARCH) -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
|
|
-DELF_FORMAT="$(ELF_FORMAT)" -DKERNEL_STACK_SIZE=$(STACK_SIZE)
|
|
|
|
# The wrappers will select whether using "malloc" or the kernel allocator.
|
|
LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
|
|
|
|
LD_FLAGS_CMDLINE = $(foreach opt,$(LDFLAGS),-Wl,$(opt))
|
|
|
|
CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE)
|
|
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) $(vmlinux-main) vmlinux.o \
|
|
FORCE ,$^) ; 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 \
|
|
$(SHARED_HEADERS)/user_constants.h \
|
|
$(SHARED_HEADERS)/kern_constants.h
|
|
|
|
archclean:
|
|
@find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
|
|
-o -name '*.gcov' \) -type f -print | xargs rm -f
|
|
|
|
# Generated files
|
|
|
|
$(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE
|
|
$(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@
|
|
|
|
define filechk_gen-asm-offsets
|
|
(set -e; \
|
|
echo "/*"; \
|
|
echo " * DO NOT MODIFY."; \
|
|
echo " *"; \
|
|
echo " * This file was generated by arch/$(ARCH)/Makefile"; \
|
|
echo " *"; \
|
|
echo " */"; \
|
|
echo ""; \
|
|
sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \
|
|
echo ""; )
|
|
endef
|
|
|
|
$(SHARED_HEADERS)/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
|
|
$(call filechk,gen-asm-offsets)
|
|
|
|
$(SHARED_HEADERS)/kern_constants.h:
|
|
$(Q)mkdir -p $(dir $@)
|
|
$(Q)echo '#include "../../../../include/asm/asm-offsets.h"' >$@
|
|
|
|
export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS HEADER_ARCH DEV_NULL_PATH
|