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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1f2f01b122
By default, sparse assumes a 64bit machine when compiled on x86-64
and 32bit when compiled on anything else.
This can of course create all sort of problems for the other archs, like
issuing false warnings ('shift too big (32) for type unsigned long'), or
worse, failing to emit legitimate warnings.
Fix this by adding the -m32/-m64 flag, depending on CONFIG_64BIT,
to CHECKFLAGS in the main Makefile (and so for all archs).
Also, remove the now unneeded -m32/-m64 in arch specific Makefiles.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
107 lines
2.7 KiB
Makefile
107 lines
2.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# sparc/Makefile
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#
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# Makefile for the architecture dependent flags and dependencies on the
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# Sparc and sparc64.
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#
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# Copyright (C) 1994,1996,1998 David S. Miller (davem@caip.rutgers.edu)
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# Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
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# We are not yet configured - so test on arch
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ifeq ($(ARCH),sparc)
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KBUILD_DEFCONFIG := sparc32_defconfig
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else
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KBUILD_DEFCONFIG := sparc64_defconfig
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endif
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ifeq ($(CONFIG_SPARC32),y)
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#####
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# sparc32
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#
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CHECKFLAGS += -D__sparc__
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LDFLAGS := -m elf32_sparc
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export BITS := 32
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UTS_MACHINE := sparc
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# We are adding -Wa,-Av8 to KBUILD_CFLAGS to deal with a specs bug in some
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# versions of gcc. Some gcc versions won't pass -Av8 to binutils when you
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# give -mcpu=v8. This silently worked with older bintutils versions but
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# does not any more.
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KBUILD_CFLAGS += -m32 -mcpu=v8 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7
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KBUILD_CFLAGS += -Wa,-Av8
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KBUILD_AFLAGS += -m32 -Wa,-Av8
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else
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#####
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# sparc64
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#
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CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__
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LDFLAGS := -m elf64_sparc
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export BITS := 64
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UTS_MACHINE := sparc64
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KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow
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KBUILD_CFLAGS += -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare
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KBUILD_CFLAGS += -Wa,--undeclared-regs
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KBUILD_CFLAGS += $(call cc-option,-mtune=ultrasparc3)
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KBUILD_AFLAGS += -m64 -mcpu=ultrasparc -Wa,--undeclared-regs
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ifeq ($(CONFIG_MCOUNT),y)
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KBUILD_CFLAGS += -pg
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endif
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endif
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head-y := arch/sparc/kernel/head_$(BITS).o
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# See arch/sparc/Kbuild for the core part of the kernel
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core-y += arch/sparc/
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libs-y += arch/sparc/prom/
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libs-y += arch/sparc/lib/
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drivers-$(CONFIG_PM) += arch/sparc/power/
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drivers-$(CONFIG_OPROFILE) += arch/sparc/oprofile/
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boot := arch/sparc/boot
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# Default target
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all: zImage
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image zImage uImage tftpboot.img vmlinux.aout: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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install:
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$(Q)$(MAKE) $(build)=$(boot) $@
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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PHONY += vdso_install
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vdso_install:
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$(Q)$(MAKE) $(build)=arch/sparc/vdso $@
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# This is the image used for packaging
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KBUILD_IMAGE := $(boot)/zImage
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# Don't use tabs in echo arguments.
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ifeq ($(ARCH),sparc)
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define archhelp
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echo '* image - kernel image ($(boot)/image)'
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echo '* zImage - stripped kernel image ($(boot)/zImage)'
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echo ' uImage - U-Boot SPARC32 Image (only for LEON)'
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echo ' tftpboot.img - image prepared for tftp'
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endef
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else
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define archhelp
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echo '* vmlinux - standard sparc64 kernel'
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echo '* zImage - stripped and compressed sparc64 kernel ($(boot)/zImage)'
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echo ' vmlinux.aout - a.out kernel for sparc64'
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echo ' tftpboot.img - image prepared for tftp'
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endef
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endif
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