mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 02:01:24 +01:00
Frediano Ziglio
26c9d03dd4
This patch introduce coverage support to Xen. Currently it allows to compile Xen with coverage support but there is no way to extract them. The declarations came from Linux source files (as you can see from file headers). The idea is to have some operations mainly - get coverage information size - read coverage information - reset coverage counters Linux use a file system to export these information. The information will be a blob to handle with some tools (as usually tools require a bunch of files but Xen does not handle files at all). I'll pack them to make things simpler as possible. These information cannot be put in a specific section (allowing a safe mapping) as gcc use .rodata, .data, .text and .ctors sections. I added code to handle constructors used in this case to initialize a linked list of files. I excluded %.init.o files as they are used before Xen start and should not have section like .text or .data. I used a "coverage" configuration option to mimic the "debug" one. Signed-off-by: Frediano Ziglio <frediano.ziglio@citrix.com>
235 lines
8.0 KiB
Makefile
235 lines
8.0 KiB
Makefile
# -*- mode: Makefile; -*-
|
|
|
|
ifeq ($(filter /%,$(XEN_ROOT)),)
|
|
$(error XEN_ROOT must be absolute)
|
|
endif
|
|
|
|
# fallback for older make
|
|
realpath = $(wildcard $(foreach file,$(1),$(shell cd -P $(dir $(file)) && echo "$$PWD/$(notdir $(file))")))
|
|
|
|
-include $(XEN_ROOT)/.config
|
|
|
|
# A debug build of Xen and tools?
|
|
debug ?= y
|
|
debug_symbols ?= $(debug)
|
|
|
|
# Test coverage support
|
|
coverage ?= n
|
|
|
|
XEN_COMPILE_ARCH ?= $(shell uname -m | sed -e s/i.86/x86_32/ \
|
|
-e s/i86pc/x86_32/ -e s/amd64/x86_64/ \
|
|
-e s/armv7.*/arm32/)
|
|
|
|
XEN_TARGET_ARCH ?= $(XEN_COMPILE_ARCH)
|
|
XEN_OS ?= $(shell uname -s)
|
|
|
|
CONFIG_$(XEN_OS) := y
|
|
|
|
SHELL ?= /bin/sh
|
|
|
|
# Tools to run on system hosting the build
|
|
HOSTCC = gcc
|
|
HOSTCFLAGS = -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer
|
|
HOSTCFLAGS += -fno-strict-aliasing
|
|
|
|
DISTDIR ?= $(XEN_ROOT)/dist
|
|
DESTDIR ?= /
|
|
|
|
# Allow phony attribute to be listed as dependency rather than fake target
|
|
.PHONY: .phony
|
|
|
|
# Use Clang/LLVM instead of GCC?
|
|
clang ?= n
|
|
ifeq ($(clang),n)
|
|
gcc := y
|
|
else
|
|
gcc := n
|
|
endif
|
|
|
|
|
|
include $(XEN_ROOT)/config/$(XEN_OS).mk
|
|
include $(XEN_ROOT)/config/$(XEN_TARGET_ARCH).mk
|
|
|
|
SHAREDIR ?= $(PREFIX)/share
|
|
DOCDIR ?= $(SHAREDIR)/doc/xen
|
|
MANDIR ?= $(SHAREDIR)/man
|
|
BASH_COMPLETION_DIR ?= $(CONFIG_DIR)/bash_completion.d
|
|
|
|
# arguments: variable, common path part, path to test, if yes, if no
|
|
define setvar_dir
|
|
ifndef $(1)
|
|
ifneq (,$(wildcard $(2)$(3)))
|
|
$(1) ?= $(2)$(4)
|
|
else
|
|
$(1) ?= $(2)$(5)
|
|
endif
|
|
endif
|
|
endef
|
|
|
|
# See distro_mapping.txt for other options
|
|
$(eval $(call setvar_dir,CONFIG_LEAF_DIR,,/etc/sysconfig,sysconfig,default))
|
|
$(eval $(call setvar_dir,SUBSYS_DIR,/var/run,/subsys,/subsys,))
|
|
$(eval $(call setvar_dir,INITD_DIR,/etc,/rc.d/init.d,/rc.d/init.d,/init.d))
|
|
|
|
ifneq ($(EXTRA_PREFIX),)
|
|
EXTRA_INCLUDES += $(EXTRA_PREFIX)/include
|
|
EXTRA_LIB += $(EXTRA_PREFIX)/lib
|
|
endif
|
|
|
|
PYTHON ?= python
|
|
PYTHON_PREFIX_ARG ?= --prefix="$(PREFIX)"
|
|
# The above requires that PREFIX contains *no spaces*. This variable is here
|
|
# to permit the user to set PYTHON_PREFIX_ARG to '' to workaround this bug:
|
|
# https://bugs.launchpad.net/ubuntu/+bug/362570
|
|
|
|
# cc-option: Check if compiler supports first option, else fall back to second.
|
|
#
|
|
# This is complicated by the fact that unrecognised -Wno-* options:
|
|
# (a) are ignored unless the compilation emits a warning; and
|
|
# (b) even then produce a warning rather than an error
|
|
# To handle this we do a test compile, passing the option-under-test, on a code
|
|
# fragment that will always produce a warning (integer assigned to pointer).
|
|
# We then grep for the option-under-test in the compiler's output, the presence
|
|
# of which would indicate an "unrecognized command-line option" warning/error.
|
|
#
|
|
# Usage: cflags-y += $(call cc-option,$(CC),-march=winchip-c6,-march=i586)
|
|
cc-option = $(shell if test -z "`echo 'void*p=1;' | \
|
|
$(1) $(2) -S -o /dev/null -xc - 2>&1 | grep -- $(2) -`"; \
|
|
then echo "$(2)"; else echo "$(3)"; fi ;)
|
|
|
|
# cc-option-add: Add an option to compilation flags, but only if supported.
|
|
# Usage: $(call cc-option-add CFLAGS,CC,-march=winchip-c6)
|
|
cc-option-add = $(eval $(call cc-option-add-closure,$(1),$(2),$(3)))
|
|
define cc-option-add-closure
|
|
ifneq ($$(call cc-option,$$($(2)),$(3),n),n)
|
|
$(1) += $(3)
|
|
endif
|
|
endef
|
|
|
|
cc-options-add = $(foreach o,$(3),$(call cc-option-add,$(1),$(2),$(o)))
|
|
|
|
# cc-ver: Check compiler is at least specified version. Return boolean 'y'/'n'.
|
|
# Usage: ifeq ($(call cc-ver,$(CC),0x030400),y)
|
|
cc-ver = $(shell if [ $$((`$(1) -dumpversion | awk -F. \
|
|
'{ printf "0x%02x%02x%02x", $$1, $$2, $$3}'`)) -ge $$(($(2))) ]; \
|
|
then echo y; else echo n; fi ;)
|
|
|
|
# cc-ver-check: Check compiler is at least specified version, else fail.
|
|
# Usage: $(call cc-ver-check,CC,0x030400,"Require at least gcc-3.4")
|
|
cc-ver-check = $(eval $(call cc-ver-check-closure,$(1),$(2),$(3)))
|
|
define cc-ver-check-closure
|
|
ifeq ($$(call cc-ver,$$($(1)),$(2)),n)
|
|
override $(1) = echo "*** FATAL BUILD ERROR: "$(3) >&2; exit 1;
|
|
cc-option := n
|
|
endif
|
|
endef
|
|
|
|
# Require GCC v4.1+
|
|
check-$(gcc) = $(call cc-ver-check,CC,0x040100,"Xen requires at least gcc-4.1")
|
|
$(eval $(check-y))
|
|
|
|
define buildmakevars2shellvars
|
|
export PREFIX="$(PREFIX)"; \
|
|
export XEN_SCRIPT_DIR="$(XEN_SCRIPT_DIR)"; \
|
|
export XEN_ROOT="$(XEN_ROOT)"
|
|
endef
|
|
|
|
#
|
|
# Compare $(1) and $(2) and replace $(2) with $(1) if they differ
|
|
#
|
|
# Typically $(1) is a newly generated file and $(2) is the target file
|
|
# being regenerated. This prevents changing the timestamp of $(2) only
|
|
# due to being auto regenereated with the same contents.
|
|
define move-if-changed
|
|
if ! cmp -s $(1) $(2); then mv -f $(1) $(2); else rm -f $(1); fi
|
|
endef
|
|
|
|
buildmakevars2file = $(eval $(call buildmakevars2file-closure,$(1)))
|
|
define buildmakevars2file-closure
|
|
.PHONY: genpath
|
|
genpath:
|
|
rm -f $(1).tmp; \
|
|
$(foreach var, \
|
|
SBINDIR BINDIR LIBEXEC LIBDIR SHAREDIR PRIVATE_BINDIR \
|
|
XENFIRMWAREDIR XEN_CONFIG_DIR XEN_SCRIPT_DIR XEN_LOCK_DIR \
|
|
XEN_RUN_DIR XEN_PAGING_DIR, \
|
|
echo "$(var)=\"$($(var))\"" >>$(1).tmp;) \
|
|
$(call move-if-changed,$(1).tmp,$(1))
|
|
endef
|
|
|
|
ifeq ($(debug_symbols),y)
|
|
CFLAGS += -g
|
|
endif
|
|
|
|
CFLAGS += -fno-strict-aliasing
|
|
|
|
CFLAGS += -std=gnu99
|
|
|
|
CFLAGS += -Wall -Wstrict-prototypes
|
|
|
|
# Clang complains about macros that expand to 'if ( ( foo == bar ) ) ...'
|
|
# and is over-zealous with the printf format lint
|
|
# and is a bit too fierce about unused return values
|
|
CFLAGS-$(clang) += -Wno-parentheses -Wno-format -Wno-unused-value
|
|
|
|
$(call cc-option-add,HOSTCFLAGS,HOSTCC,-Wdeclaration-after-statement)
|
|
$(call cc-option-add,CFLAGS,CC,-Wdeclaration-after-statement)
|
|
$(call cc-option-add,CFLAGS,CC,-Wno-unused-but-set-variable)
|
|
$(call cc-option-add,CFLAGS,CC,-Wno-unused-local-typedefs)
|
|
|
|
LDFLAGS += $(foreach i, $(EXTRA_LIB), -L$(i))
|
|
CFLAGS += $(foreach i, $(EXTRA_INCLUDES), -I$(i))
|
|
LDFLAGS += $(foreach i, $(PREPEND_LIB), -L$(i))
|
|
CFLAGS += $(foreach i, $(PREPEND_INCLUDES), -I$(i))
|
|
APPEND_LDFLAGS += $(foreach i, $(APPEND_LIB), -L$(i))
|
|
APPEND_CFLAGS += $(foreach i, $(APPEND_INCLUDES), -I$(i))
|
|
|
|
EMBEDDED_EXTRA_CFLAGS := -nopie -fno-stack-protector -fno-stack-protector-all
|
|
EMBEDDED_EXTRA_CFLAGS += -fno-exceptions
|
|
|
|
# Enable XSM security module (by default, Flask).
|
|
XSM_ENABLE ?= n
|
|
FLASK_ENABLE ?= $(XSM_ENABLE)
|
|
|
|
XEN_EXTFILES_URL=http://xenbits.xen.org/xen-extfiles
|
|
# All the files at that location were downloaded from elsewhere on
|
|
# the internet. The original download URL is preserved as a comment
|
|
# near the place in the Xen Makefiles where the file is used.
|
|
|
|
ifeq ($(GIT_HTTP),y)
|
|
QEMU_REMOTE=http://xenbits.xen.org/git-http/qemu-xen-unstable.git
|
|
else
|
|
QEMU_REMOTE=git://xenbits.xen.org/qemu-xen-unstable.git
|
|
endif
|
|
|
|
ifeq ($(GIT_HTTP),y)
|
|
OVMF_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/ovmf.git
|
|
QEMU_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/qemu-upstream-unstable.git
|
|
SEABIOS_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/seabios.git
|
|
else
|
|
OVMF_UPSTREAM_URL ?= git://xenbits.xen.org/ovmf.git
|
|
QEMU_UPSTREAM_URL ?= git://xenbits.xen.org/qemu-upstream-unstable.git
|
|
SEABIOS_UPSTREAM_URL ?= git://xenbits.xen.org/seabios.git
|
|
endif
|
|
OVMF_UPSTREAM_REVISION ?= b0855f925c6e2e0b21fbb03fab4b5fb5b6876871
|
|
QEMU_UPSTREAM_REVISION ?= master
|
|
SEABIOS_UPSTREAM_TAG ?= rel-1.7.1
|
|
# Wed Aug 29 21:27:37 2012 -0400
|
|
# Make iasl option check work with older versions of iasl.
|
|
|
|
ETHERBOOT_NICS ?= rtl8139 8086100e
|
|
|
|
# Specify which qemu-dm to use. This may be `ioemu' to use the old
|
|
# Mercurial in-tree version, or a local directory, or a git URL.
|
|
# CONFIG_QEMU ?= `pwd`/$(XEN_ROOT)/../qemu-xen.git
|
|
CONFIG_QEMU ?= $(QEMU_REMOTE)
|
|
|
|
QEMU_TAG ?= 3b7917bce51cdf433924d295edcfe84f407bd1f7
|
|
# Wed Feb 20 15:40:13 2013 +0000
|
|
# cpu_ioreq_pio, cpu_ioreq_move: introduce read_phys_req_item, write_phys_reqm
|
|
|
|
# Short answer -- do not enable this unless you know what you are
|
|
# doing and are prepared for some pain.
|
|
|
|
CONFIG_TESTS ?= y
|