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d49a062621
Generic function-alignment infrastructure.
Architectures can select FUNCTION_ALIGNMENT_xxB symbols; the
FUNCTION_ALIGNMENT symbol is then set to the largest such selected
size, 0 otherwise.
From this the -falign-functions compiler argument and __ALIGN macro
are set.
This incorporates the DEBUG_FORCE_FUNCTION_ALIGN_64B knob and future
alignment requirements for x86_64 (later in this series) into a single
place.
NOTE: also removes the 0x90 filler byte from the generic __ALIGN
primitive, that value makes no sense outside of x86.
NOTE: .balign 0 reverts to a no-op.
Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220915111143.719248727@infradead.org
83 lines
2.2 KiB
Makefile
83 lines
2.2 KiB
Makefile
#
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# ia64/Makefile
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies.
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1998-2004 by David Mosberger-Tang <davidm@hpl.hp.com>
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#
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KBUILD_DEFCONFIG := generic_defconfig
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NM := $(CROSS_COMPILE)nm -B
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CHECKFLAGS += -D__ia64=1 -D__ia64__=1 -D_LP64 -D__LP64__
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OBJCOPYFLAGS := --strip-all
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LDFLAGS_vmlinux := -static
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KBUILD_AFLAGS_KERNEL := -mconstant-gp
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EXTRA :=
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cflags-y := -pipe $(EXTRA) -ffixed-r13 -mfixed-range=f12-f15,f32-f127 \
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-frename-registers -fno-optimize-sibling-calls
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KBUILD_CFLAGS_KERNEL := -mconstant-gp
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GAS_STATUS = $(shell $(srctree)/arch/ia64/scripts/check-gas "$(CC)" "$(OBJDUMP)")
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KBUILD_CPPFLAGS += $(shell $(srctree)/arch/ia64/scripts/toolchain-flags "$(CC)" "$(OBJDUMP)" "$(READELF)")
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ifeq ($(GAS_STATUS),buggy)
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$(error Sorry, you need a newer version of the assember, one that is built from \
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a source-tree that post-dates 18-Dec-2002. You can find a pre-compiled \
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static binary of such an assembler at: \
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\
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ftp://ftp.hpl.hp.com/pub/linux-ia64/gas-030124.tar.gz)
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endif
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quiet_cmd_gzip = GZIP $@
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cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@
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quiet_cmd_objcopy = OBJCOPY $@
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cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
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KBUILD_CFLAGS += $(cflags-y)
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libs-y += arch/ia64/lib/
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drivers-y += arch/ia64/pci/ arch/ia64/hp/common/
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PHONY += compressed check
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all: compressed unwcheck
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compressed: vmlinux.gz
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vmlinuz: vmlinux.gz
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vmlinux.gz: vmlinux.bin FORCE
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$(call if_changed,gzip)
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vmlinux.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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unwcheck: vmlinux
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-$(Q)READELF=$(READELF) $(PYTHON3) $(srctree)/arch/ia64/scripts/unwcheck.py $<
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archheaders:
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$(Q)$(MAKE) $(build)=arch/ia64/kernel/syscalls all
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CLEAN_FILES += vmlinux.gz
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install: KBUILD_IMAGE := vmlinux.gz
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install:
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$(call cmd,install)
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define archhelp
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echo '* compressed - Build compressed kernel image'
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echo ' install - Install compressed kernel image'
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echo '* unwcheck - Check vmlinux for invalid unwind info'
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endef
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