1 files changed, 210 insertions, 0 deletions

diff --git a/arch/um/Makefile b/arch/um/Makefile
new file mode 100644
index 000000000000..97bca6b5ca95
--- /dev/null
+++ b/arch/um/Makefile
@@ -0,0 +1,210 @@
+# 
+# Copyright (C) 2002 Jeff Dike (jdike@karaya.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)/
+
+# 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 vm-flags.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
+
+MODE_INCLUDE    += $(foreach mode,$(um-modes-y),\
+                   -I$(srctree)/$(ARCH_DIR)/kernel/$(mode)/include)
+
+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
+SYS_DIR         := $(ARCH_DIR)/include/sysdep-$(SUBARCH)
+
+include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH)
+
+core-y += $(SUBARCH_CORE)
+libs-y += $(SUBARCH_LIBS)
+
+# -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.
+
+CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
+        $(ARCH_INCLUDE) $(MODE_INCLUDE)
+
+USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
+USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
+        $(MODE_INCLUDE) $(ARCH_USER_CFLAGS)
+CFLAGS += -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask
+CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
+
+#This will adjust *FLAGS accordingly to the platform.
+include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
+
+# These are needed for clean and mrproper, since in that case .config is not
+# included; the values here are meaningless
+
+CONFIG_NEST_LEVEL ?= 0
+CONFIG_KERNEL_HALF_GIGS ?= 0
+
+SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
+
+ifeq ($(CONFIG_MODE_SKAS), y)
+$(SYS_HEADERS) : $(ARCH_DIR)/include/skas_ptregs.h
+endif
+
+.PHONY: linux
+
+all: linux
+
+linux: vmlinux
+        ln -f $< $@
+
+define archhelp
+  echo '* linux         - Binary kernel image (./linux) - for backward'
+  echo '                   compatibility only, this creates a hard link to the'
+  echo '                   real kernel binary, the the "vmlinux" binary you'
+  echo '                   find in the kernel root.'
+endef
+
+$(shell cd $(ARCH_DIR) && ln -sf Kconfig_$(SUBARCH) Kconfig_arch)
+
+prepare: $(ARCH_SYMLINKS) $(SYS_HEADERS) $(GEN_HEADERS) \
+        $(ARCH_DIR)/kernel/vmlinux.lds.S
+
+LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
+LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
+
+LD_SCRIPT-$(CONFIG_LD_SCRIPT_STATIC) := uml.lds.S
+LD_SCRIPT-$(CONFIG_LD_SCRIPT_DYN) := dyn.lds.S
+
+CPP_MODE-$(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)))
+endif
+
+CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \
+        -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
+        -DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE-y) \
+        -DKERNEL_STACK_SIZE=$(STACK_SIZE))
+
+#The wrappers will select whether using "malloc" or the kernel allocator.
+LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
+
+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) $(vmlinux-main) \
+        FORCE ,$^) ; 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 $(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)/Kconfig_arch
+
+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 when needed.
+$(ARCH_DIR)/kernel/vmlinux.lds.S: FORCE
+        $(Q)if [ "$(shell readlink $@)" != "$(LD_SCRIPT-y)" ]; then \
+                echo '  SYMLINK $@'; \
+                ln -sf $(LD_SCRIPT-y) $@; \
+                touch $@; \
+        fi;
+
+$(SYMLINK_HEADERS):
+        @echo '  SYMLINK $@'
+        $(Q)cd $(TOPDIR)/$(dir $@) ; \
+        ln -sf $(basename $(notdir $@))-$(SUBARCH)$(suffix $@) $(notdir $@)
+
+include/asm-um/arch:
+        @echo '  SYMLINK $@'
+        $(Q)cd $(TOPDIR)/include/asm-um && ln -sf ../asm-$(SUBARCH) arch
+
+$(ARCH_DIR)/include/sysdep:
+        @echo '  SYMLINK $@'
+        $(Q)cd $(ARCH_DIR)/include && ln -sf sysdep-$(SUBARCH) sysdep
+
+$(ARCH_DIR)/os:
+        @echo '  SYMLINK $@'
+        $(Q)cd $(ARCH_DIR) && ln -sf os-$(OS) os
+
+# Generated files
+define filechk_umlconfig
+        sed 's/ CONFIG/ UML_CONFIG/'
+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/user_constants.h: $(ARCH_DIR)/os/util/mk_user_constants
+        $(call filechk,gen_header)
+
+$(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)/os/util/mk_user_constants: $(ARCH_DIR)/os/util FORCE ;
+
+$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants: $(ARCH_DIR)/include/user_constants.h $(ARCH_DIR)/util \
+        FORCE ;
+
+$(ARCH_DIR)/kernel/skas/util/mk_ptregs: $(ARCH_DIR)/kernel/skas/util FORCE ;
+
+$(ARCH_DIR)/util: scripts_basic $(SYS_DIR)/sc.h FORCE
+        $(Q)$(MAKE) $(build)=$@
+
+$(ARCH_DIR)/kernel/skas/util: scripts_basic FORCE
+        $(Q)$(MAKE) $(build)=$@
+
+$(ARCH_DIR)/os/util: scripts_basic FORCE
+        $(Q)$(MAKE) $(build)=$@
+
+export SUBARCH USER_CFLAGS OS