X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fum%2FMakefile;h=f6ad832faf130dfd15714e0d54bbcb91736cce1b;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=0406c1a90714f3de31e809736465469fe694cb2d;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git

diff --git a/arch/um/Makefile b/arch/um/Makefile
index 0406c1a90..f6ad832fa 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -1,54 +1,87 @@
-# 
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
 # Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
 # Licensed under the GPL
 #
 
-ARCH_DIR = arch/um
+ARCH_DIR := arch/um
 OS := $(shell uname -s)
-#We require it or things break.
+# 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/		\
-			   $(ARCH_DIR)/sys-$(SUBARCH)/
+			   $(ARCH_DIR)/os-$(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
+SYMLINK_HEADERS := archparam.h system.h sigcontext.h processor.h ptrace.h \
+	module.h vm-flags.h elf.h host_ldt.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
 
-MAKEFILE-$(CONFIG_MODE_TT) += Makefile-tt
-MAKEFILE-$(CONFIG_MODE_SKAS) += Makefile-skas
+MODE_INCLUDE	+= $(foreach mode,$(um-modes-y),\
+		   -I$(srctree)/$(ARCH_DIR)/include/$(mode))
 
-ifneq ($(MAKEFILE-y),)
-  include $(addprefix $(ARCH_DIR)/,$(MAKEFILE-y))
+MAKEFILES-INCL	+= $(foreach mode,$(um-modes-y),\
+		   $(srctree)/$(ARCH_DIR)/Makefile-$(mode))
+
+ifneq ($(MAKEFILES-INCL),)
+  include $(MAKEFILES-INCL)
 endif
 
 ARCH_INCLUDE	:= -I$(ARCH_DIR)/include
+ifneq ($(KBUILD_SRC),)
+ARCH_INCLUDE	+= -I$(srctree)/$(ARCH_DIR)/include
+endif
 SYS_DIR		:= $(ARCH_DIR)/include/sysdep-$(SUBARCH)
 
-include $(ARCH_DIR)/Makefile-$(SUBARCH)
-include $(ARCH_DIR)/Makefile-os-$(OS)
+# -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.
+
+CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\"	\
+	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap	\
+	-Din6addr_loopback=kernel_in6addr_loopback
+
+AFLAGS += $(ARCH_INCLUDE)
+
+USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
+USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
+	$(MODE_INCLUDE) -D_FILE_OFFSET_BITS=64
 
 # -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.
+# These apply to kernelspace only.
 
-CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
-	-D_LARGEFILE64_SOURCE $(ARCH_INCLUDE) -Derrno=kernel_errno \
-	-Dsigprocmask=kernel_sigprocmask $(MODE_INCLUDE)
-
+CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
+	-Dmktime=kernel_mktime
 CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
 
-LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
+include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
+
+#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
@@ -58,104 +91,114 @@ 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
 
-prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) \
-	$(ARCH_DIR)/kernel/vmlinux.lds.S
+all: linux
 
-# These aren't in Makefile-tt because they are needed in the !CONFIG_MODE_TT +
-# CONFIG_MODE_SKAS + CONFIG_STATIC_LINK case.
+linux: vmlinux
+	@echo '  LINK $@'
+	$(Q)ln -f $< $@
 
-LINK_TT = -static
-LD_SCRIPT_TT := uml.lds.S
+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
 
-ifeq ($(CONFIG_STATIC_LINK),y)
-  LINK-y += $(LINK_TT)
-  LD_SCRIPT-y := $(LD_SCRIPT_TT)
-else
-ifeq ($(CONFIG_MODE_TT),y)
-  LINK-y += $(LINK_TT)
-  LD_SCRIPT-y := $(LD_SCRIPT_TT)
+ifneq ($(KBUILD_SRC),)
+$(shell mkdir -p $(ARCH_DIR) && ln -fsn $(srctree)/$(ARCH_DIR)/Kconfig.$(SUBARCH) $(ARCH_DIR)/Kconfig.arch)
 else
-ifeq ($(CONFIG_MODE_SKAS),y)
-  LINK-y += $(LINK_SKAS)
-  LD_SCRIPT-y := $(LD_SCRIPT_SKAS)
-endif
-endif
+$(shell cd $(ARCH_DIR) && ln -sf Kconfig.$(SUBARCH) Kconfig.arch)
 endif
 
-CPP_MODE_TT := $(shell [ "$(CONFIG_MODE_TT)" = "y" ] && echo -DMODE_TT)
+archprepare: $(ARCH_SYMLINKS) $(ARCH_DIR)/include/user_constants.h
+prepare: $(ARCH_DIR)/include/kern_constants.h
+
+LINK-$(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,) \
+	$(call cc-option, -fno-stack-protector-all,)
+
+CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
 CONFIG_KERNEL_STACK_ORDER ?= 2
 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
 
 ifndef START
-  START = $$(($(TOP_ADDR) - $(SIZE)))
+  START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
 endif
 
-CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \
+CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
 	-DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
-	-DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE_TT) \
-	-DKERNEL_STACK_SIZE=$(STACK_SIZE))
+	-DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
+	-DKERNEL_STACK_SIZE=$(STACK_SIZE) \
+	-DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap.o
 
-CFLAGS_vmlinux = $(LINK-y) $(LINK_WRAPS)
+#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 \
-	-L/usr/lib -lutil \
-	$(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
+	-lutil \
+	$(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) \
+	FORCE ,$^) ; rm -f linux
 endef
 
-USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
-USER_CFLAGS := $(patsubst -Derrno=kernel_errno,,$(USER_CFLAGS))
-USER_CFLAGS := $(patsubst -Dsigprocmask=kernel_sigprocmask,,$(USER_CFLAGS))
-USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
-	$(MODE_INCLUDE)
-
-# To get a definition of F_SETSIG
-USER_CFLAGS += -D_GNU_SOURCE
-
 #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)/include/user_constants.h \
+	$(ARCH_DIR)/include/kern_constants.h $(ARCH_DIR)/Kconfig.arch
 
-archmrproper:
-	@:
+MRPROPER_FILES += $(ARCH_SYMLINKS)
 
 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
 
-#We need to re-preprocess this when the symlink dest changes.
-#So we touch it.
-$(ARCH_DIR)/kernel/vmlinux.lds.S: FORCE
-	@echo '  SYMLINK $@'
-	$(Q)ln -sf $(LD_SCRIPT-y) $@
-	$(Q)touch $@
-
 $(SYMLINK_HEADERS):
 	@echo '  SYMLINK $@'
+ifneq ($(KBUILD_SRC),)
+	$(Q)mkdir -p $(objtree)/include/asm-um
+	$(Q)ln -fsn $(srctree)/include/asm-um/$(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $@
+else
 	$(Q)cd $(TOPDIR)/$(dir $@) ; \
 	ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
+endif
 
 include/asm-um/arch:
 	@echo '  SYMLINK $@'
+ifneq ($(KBUILD_SRC),)
+	$(Q)mkdir -p $(objtree)/include/asm-um
+	$(Q)ln -fsn $(srctree)/include/asm-$(SUBARCH) include/asm-um/arch
+else
 	$(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
+endif
 
-$(ARCH_DIR)/include/sysdep:
+$(objtree)/$(ARCH_DIR)/include:
+	@echo '  MKDIR $@'
+	$(Q)mkdir -p $@
+
+$(ARCH_DIR)/include/sysdep: $(objtree)/$(ARCH_DIR)/include
 	@echo '  SYMLINK $@'
+ifneq ($(KBUILD_SRC),)
+	$(Q)ln -fsn $(srctree)/$(ARCH_DIR)/include/sysdep-$(SUBARCH) $(ARCH_DIR)/include/sysdep
+else
 	$(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
+endif
 
 $(ARCH_DIR)/os:
 	@echo '  SYMLINK $@'
+ifneq ($(KBUILD_SRC),)
+	$(Q)ln -fsn $(srctree)/$(ARCH_DIR)/os-$(OS) $(ARCH_DIR)/os
+else
 	$(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
+endif
 
 # Generated files
 define filechk_umlconfig
@@ -165,24 +208,27 @@ endef
 $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h
 	$(call filechk,umlconfig)
 
-$(ARCH_DIR)/include/task.h: $(ARCH_DIR)/util/mk_task
-	$(call filechk,gen_header)
-
-$(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)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/util \
-	FORCE ;
-
-$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
+$(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
 
-$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h FORCE
-	$(Q)$(MAKE) $(build)=$@
+$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s
+	$(call filechk,gen-asm-offsets)
 
-$(ARCH_DIR)/kernel/skas/util: scripts_basic FORCE
-	$(Q)$(MAKE) $(build)=$@
+$(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include
+	@echo '  SYMLINK $@'
+	$(Q)ln -sf ../../../include/asm-um/asm-offsets.h $@
 
-export SUBARCH USER_CFLAGS OS
+export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS