@@ -296,7 +296,7 @@ endif # need-config
.PHONY: build install uninstall clean distclean MAP
build install uninstall debug clean distclean MAP::
ifneq ($(XEN_TARGET_ARCH),x86_32)
- $(MAKE) -f Rules.mk _$@
+ $(MAKE) -f Rules.mk MKRELOC=$(MKRELOC) _$@
else
echo "*** Xen x86/32 target no longer supported!"
endif
@@ -404,7 +404,7 @@ $(TARGET): FORCE
$(MAKE) -f $(BASEDIR)/Rules.mk -C include
$(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) include
$(MAKE) -f $(BASEDIR)/Rules.mk arch/$(TARGET_ARCH)/include/asm/asm-offsets.h
- $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) $@
+ $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) MKRELOC=$(MKRELOC) $@
quiet_cmd_banner = BANNER $@
define cmd_banner
@@ -121,44 +121,8 @@ $(TARGET): $(TARGET)-syms $(efi-y) boot/mkelf32
{ echo "No Multiboot2 header found" >&2; false; }
mv $(TMP) $(TARGET)
-ifneq ($(efi-y),)
-
-# Check if the compiler supports the MS ABI.
-export XEN_BUILD_EFI := $(shell $(CC) $(XEN_CFLAGS) -c efi/check.c -o efi/check.o 2>/dev/null && echo y)
CFLAGS-$(XEN_BUILD_EFI) += -DXEN_BUILD_EFI
-# Check if the linker supports PE.
-EFI_LDFLAGS = $(patsubst -m%,-mi386pep,$(XEN_LDFLAGS)) --subsystem=10
-XEN_BUILD_PE := $(if $(XEN_BUILD_EFI),$(call ld-option,$(EFI_LDFLAGS) --image-base=0x100000000 -o efi/check.efi efi/check.o))
-# If the above failed, it may be merely because of the linker not dealing well
-# with debug info. Try again with stripping it.
-ifeq ($(CONFIG_DEBUG_INFO)-$(XEN_BUILD_PE),y-n)
-EFI_LDFLAGS += --strip-debug
-XEN_BUILD_PE := $(call ld-option,$(EFI_LDFLAGS) --image-base=0x100000000 -o efi/check.efi efi/check.o)
-endif
-
-ifeq ($(XEN_BUILD_PE),y)
-
-# Check if the linker produces fixups in PE by default
-nr-fixups := $(shell $(OBJDUMP) -p efi/check.efi | grep '^[[:blank:]]*reloc[[:blank:]]*[0-9][[:blank:]].*DIR64$$' | wc -l)
-ifeq ($(nr-fixups),2)
-MKRELOC := :
-relocs-dummy :=
-else
-MKRELOC := efi/mkreloc
-relocs-dummy := efi/relocs-dummy.o
-# If the linker produced fixups but not precisely two of them, we need to
-# disable it doing so. But if it didn't produce any fixups, it also wouldn't
-# recognize the option.
-ifneq ($(nr-fixups),0)
-EFI_LDFLAGS += --disable-reloc-section
-endif
-endif
-
-endif # $(XEN_BUILD_PE)
-
-endif # $(efi-y)
-
ALL_OBJS := $(BASEDIR)/arch/x86/boot/built_in.o $(BASEDIR)/arch/x86/efi/built_in.o $(ALL_OBJS)
ifeq ($(CONFIG_LTO),y)
@@ -182,13 +146,13 @@ $(TARGET)-syms: prelink.o xen.lds
$(NM) -pa --format=sysv $(@D)/.$(@F).0 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort \
>$(@D)/.$(@F).0.S
- $(MAKE) -f $(BASEDIR)/Rules.mk efi-y= $(@D)/.$(@F).0.o
+ $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).0.o
$(LD) $(XEN_LDFLAGS) -T xen.lds -N prelink.o $(build_id_linker) \
$(@D)/.$(@F).0.o -o $(@D)/.$(@F).1
$(NM) -pa --format=sysv $(@D)/.$(@F).1 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort $(syms-warn-dup-y) \
>$(@D)/.$(@F).1.S
- $(MAKE) -f $(BASEDIR)/Rules.mk efi-y= $(@D)/.$(@F).1.o
+ $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).1.o
$(LD) $(XEN_LDFLAGS) -T xen.lds -N prelink.o $(build_id_linker) \
$(@D)/.$(@F).1.o -o $@
$(NM) -pa --format=sysv $(@D)/$(@F) \
@@ -217,8 +181,10 @@ endif
$(TARGET).efi: VIRT_BASE = 0x$(shell $(NM) efi/relocs-dummy.o | sed -n 's, A VIRT_START$$,,p')
ifeq ($(MKRELOC),:)
+relocs-dummy :=
$(TARGET).efi: ALT_BASE :=
else
+relocs-dummy := efi/relocs-dummy.o
$(TARGET).efi: ALT_BASE = 0x$(shell $(NM) efi/relocs-dummy.o | sed -n 's, A ALT_START$$,,p')
endif
@@ -250,14 +216,14 @@ endif
$(MKRELOC) $(foreach base,$(VIRT_BASE) $(ALT_BASE),$(@D)/.$(@F).$(base).0) >$(@D)/.$(@F).0r.S
$(NM) -pa --format=sysv $(@D)/.$(@F).$(VIRT_BASE).0 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort >$(@D)/.$(@F).0s.S
- $(MAKE) -f $(BASEDIR)/Rules.mk efi-y= $(@D)/.$(@F).0r.o $(@D)/.$(@F).0s.o
+ $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).0r.o $(@D)/.$(@F).0s.o
$(foreach base, $(VIRT_BASE) $(ALT_BASE), \
$(LD) $(call EFI_LDFLAGS,$(base)) -T efi.lds -N $< \
$(@D)/.$(@F).0r.o $(@D)/.$(@F).0s.o $(note_file_option) -o $(@D)/.$(@F).$(base).1 &&) :
$(MKRELOC) $(foreach base,$(VIRT_BASE) $(ALT_BASE),$(@D)/.$(@F).$(base).1) >$(@D)/.$(@F).1r.S
$(NM) -pa --format=sysv $(@D)/.$(@F).$(VIRT_BASE).1 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort >$(@D)/.$(@F).1s.S
- $(MAKE) -f $(BASEDIR)/Rules.mk efi-y= $(@D)/.$(@F).1r.o $(@D)/.$(@F).1s.o
+ $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).1r.o $(@D)/.$(@F).1s.o
$(LD) $(call EFI_LDFLAGS,$(VIRT_BASE)) -T efi.lds -N $< \
$(@D)/.$(@F).1r.o $(@D)/.$(@F).1s.o $(note_file_option) -o $@
$(NM) -pa --format=sysv $(@D)/$(@F) \
@@ -60,5 +60,47 @@ ifeq ($(CONFIG_UBSAN),y)
$(call cc-option-add,CFLAGS_UBSAN,CC,-fno-sanitize=alignment)
endif
+ifneq ($(CONFIG_PV_SHIM_EXCLUSIVE),y)
+
+efi-check := arch/x86/efi/check
+
+# Check if the compiler supports the MS ABI.
+XEN_BUILD_EFI := $(call if-success,$(CC) $(CFLAGS) -c $(efi-check).c -o $(efi-check).o,y)
+
+# Check if the linker supports PE.
+EFI_LDFLAGS := $(patsubst -m%,-mi386pep,$(LDFLAGS)) --subsystem=10
+LD_PE_check_cmd = $(call ld-option,$(EFI_LDFLAGS) --image-base=0x100000000 -o $(efi-check).efi $(efi-check).o)
+XEN_BUILD_PE := $(LD_PE_check_cmd)
+
+# If the above failed, it may be merely because of the linker not dealing well
+# with debug info. Try again with stripping it.
+ifeq ($(CONFIG_DEBUG_INFO)-$(XEN_BUILD_PE),y-n)
+EFI_LDFLAGS += --strip-debug
+XEN_BUILD_PE := $(LD_PE_check_cmd)
+endif
+
+ifeq ($(XEN_BUILD_PE),y)
+
+# Check if the linker produces fixups in PE by default
+efi-nr-fixups := $(shell $(OBJDUMP) -p $(efi-check).efi | grep '^[[:blank:]]*reloc[[:blank:]]*[0-9][[:blank:]].*DIR64$$' | wc -l)
+
+ifeq ($(efi-nr-fixups),2)
+MKRELOC := :
+else
+MKRELOC := efi/mkreloc
+# If the linker produced fixups but not precisely two of them, we need to
+# disable it doing so. But if it didn't produce any fixups, it also wouldn't
+# recognize the option.
+ifneq ($(efi-nr-fixups),0)
+EFI_LDFLAGS += --disable-reloc-section
+endif
+endif
+
+endif # $(XEN_BUILD_PE)
+
+export XEN_BUILD_EFI XEN_BUILD_PE
+export EFI_LDFLAGS
+endif
+
# Set up the assembler include path properly for older toolchains.
CFLAGS += -Wa,-I$(BASEDIR)/include
We are going to need the variable XEN_BUILD_EFI earlier. But a side effect of calculating the value of $(XEN_BUILD_EFI) is to also to generate "efi/check.o" which is used for further checks. Thus the whole chain that check for EFI support is moved to "arch.mk". Some other changes are made to avoid too much duplication: - $(efi-check): Used to avoid repeating "efi/check.*". We don't set it to the path to the source as it would be wrong as soon as we support out-of-tree build. - $(LD_PE_check_cmd): As it is called twice, with an updated $(EFI_LDFLAGS). $(nr-fixups) is renamed to $(efi-nr-fixups) as the former might be a bit too generic. In order to avoid exporting MKRELOC, the variable is added to $(MAKE) command line. The only modification needed is in target "build", the modification target "$(TARGET)" will be needed with a following patch "build: avoid re-executing the main Makefile by introducing build.mk". We can now revert 24b0ce9a5da2, we don't need to override efi-y on recursion anymore. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> --- Notes: v9: - change $(efi-check) to hold the $(basename ) of check.c, and rename the variable from $(efi-check-0). - unexport MKRELOC, pass it down via command line instead. - remove efi-y override which reverts 24b0ce9a5da2 v8: - rename to efi-nr-fixups rather than efi-check-relocs - use := when assigning variable in makefile when recursive expansion isn't needed. - no more check of $(efi-y) value for "CFLAGS-$(XEN_BUILD_EFI) += -DXEN_BUILD_EFI". v7: - Do the whole check for EFI support in arch.mk. So efi/check.o is produce there and used there, and produce efi/check.efi and use it there. Thus avoid the need to repeat the test done for XEN_BUILD_EFI. xen/Makefile | 4 ++-- xen/arch/x86/Makefile | 46 ++++++------------------------------------- xen/arch/x86/arch.mk | 42 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 50 insertions(+), 42 deletions(-)