cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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Makefile (5831B)


      1# SPDX-License-Identifier: GPL-2.0
      2#
      3# s390/Makefile
      4#
      5# This file is included by the global makefile so that you can add your own
      6# architecture-specific flags and dependencies.
      7#
      8# Copyright (C) 1994 by Linus Torvalds
      9#
     10
     11LD_BFD		:= elf64-s390
     12KBUILD_LDFLAGS	:= -m elf64_s390
     13KBUILD_AFLAGS_MODULE += -fPIC
     14KBUILD_CFLAGS_MODULE += -fPIC
     15KBUILD_AFLAGS	+= -m64
     16KBUILD_CFLAGS	+= -m64
     17ifeq ($(CONFIG_RELOCATABLE),y)
     18KBUILD_CFLAGS	+= -fPIE
     19LDFLAGS_vmlinux	:= -pie
     20endif
     21aflags_dwarf	:= -Wa,-gdwarf-2
     22KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__
     23ifndef CONFIG_AS_IS_LLVM
     24KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf))
     25endif
     26KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack
     27KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY
     28KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain
     29KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables
     30KBUILD_CFLAGS_DECOMPRESSOR += -ffreestanding
     31KBUILD_CFLAGS_DECOMPRESSOR += -fno-stack-protector
     32KBUILD_CFLAGS_DECOMPRESSOR += $(call cc-disable-warning, address-of-packed-member)
     33KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),-g)
     34KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO_DWARF4), $(call cc-option, -gdwarf-4,))
     35KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC_NO_ARRAY_BOUNDS),-Wno-array-bounds)
     36
     37UTS_MACHINE	:= s390x
     38STACK_SIZE	:= $(if $(CONFIG_KASAN),65536,16384)
     39CHECKFLAGS	+= -D__s390__ -D__s390x__
     40
     41export LD_BFD
     42
     43mflags-$(CONFIG_MARCH_Z10)    := -march=z10
     44mflags-$(CONFIG_MARCH_Z196)   := -march=z196
     45mflags-$(CONFIG_MARCH_ZEC12)  := -march=zEC12
     46mflags-$(CONFIG_MARCH_Z13)    := -march=z13
     47mflags-$(CONFIG_MARCH_Z14)    := -march=z14
     48mflags-$(CONFIG_MARCH_Z15)    := -march=z15
     49mflags-$(CONFIG_MARCH_Z16)    := -march=z16
     50
     51export CC_FLAGS_MARCH := $(mflags-y)
     52
     53aflags-y += $(mflags-y)
     54cflags-y += $(mflags-y)
     55
     56cflags-$(CONFIG_MARCH_Z10_TUNE)		+= -mtune=z10
     57cflags-$(CONFIG_MARCH_Z196_TUNE)	+= -mtune=z196
     58cflags-$(CONFIG_MARCH_ZEC12_TUNE)	+= -mtune=zEC12
     59cflags-$(CONFIG_MARCH_Z13_TUNE)		+= -mtune=z13
     60cflags-$(CONFIG_MARCH_Z14_TUNE)		+= -mtune=z14
     61cflags-$(CONFIG_MARCH_Z15_TUNE)		+= -mtune=z15
     62cflags-$(CONFIG_MARCH_Z16_TUNE)		+= -mtune=z16
     63
     64cflags-y += -Wa,-I$(srctree)/arch/$(ARCH)/include
     65
     66#
     67# Prevent tail-call optimizations, to get clearer backtraces:
     68#
     69cflags-$(CONFIG_FRAME_POINTER) += -fno-optimize-sibling-calls
     70
     71KBUILD_AFLAGS_DECOMPRESSOR += $(aflags-y)
     72KBUILD_CFLAGS_DECOMPRESSOR += $(cflags-y)
     73
     74ifneq ($(call cc-option,-mstack-size=8192 -mstack-guard=128),)
     75  CC_FLAGS_CHECK_STACK := -mstack-size=$(STACK_SIZE)
     76  ifeq ($(call cc-option,-mstack-size=8192),)
     77    CC_FLAGS_CHECK_STACK += -mstack-guard=$(CONFIG_STACK_GUARD)
     78  endif
     79  export CC_FLAGS_CHECK_STACK
     80  cflags-$(CONFIG_CHECK_STACK) += $(CC_FLAGS_CHECK_STACK)
     81endif
     82
     83ifdef CONFIG_EXPOLINE
     84  ifdef CONFIG_EXPOLINE_EXTERN
     85    KBUILD_LDFLAGS_MODULE += arch/s390/lib/expoline.o
     86    CC_FLAGS_EXPOLINE := -mindirect-branch=thunk-extern
     87    CC_FLAGS_EXPOLINE += -mfunction-return=thunk-extern
     88  else
     89    CC_FLAGS_EXPOLINE := -mindirect-branch=thunk
     90    CC_FLAGS_EXPOLINE += -mfunction-return=thunk
     91  endif
     92  CC_FLAGS_EXPOLINE += -mindirect-branch-table
     93  export CC_FLAGS_EXPOLINE
     94  cflags-y += $(CC_FLAGS_EXPOLINE) -DCC_USING_EXPOLINE
     95  aflags-y += -DCC_USING_EXPOLINE
     96endif
     97
     98ifdef CONFIG_FUNCTION_TRACER
     99  ifeq ($(call cc-option,-mfentry -mnop-mcount),)
    100    # make use of hotpatch feature if the compiler supports it
    101    cc_hotpatch	:= -mhotpatch=0,3
    102    ifneq ($(call cc-option,$(cc_hotpatch)),)
    103      CC_FLAGS_FTRACE := $(cc_hotpatch)
    104      KBUILD_AFLAGS	+= -DCC_USING_HOTPATCH
    105      KBUILD_CFLAGS	+= -DCC_USING_HOTPATCH
    106    endif
    107  endif
    108endif
    109
    110# Test CFI features of binutils
    111cfi := $(call as-instr,.cfi_startproc\n.cfi_val_offset 15$(comma)-160\n.cfi_endproc,-DCONFIG_AS_CFI_VAL_OFFSET=1)
    112
    113KBUILD_CFLAGS	+= -mpacked-stack -mbackchain -msoft-float $(cflags-y)
    114KBUILD_CFLAGS	+= -pipe -Wno-sign-compare
    115KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables $(cfi)
    116KBUILD_AFLAGS	+= $(aflags-y) $(cfi)
    117export KBUILD_AFLAGS_DECOMPRESSOR
    118export KBUILD_CFLAGS_DECOMPRESSOR
    119
    120OBJCOPYFLAGS	:= -O binary
    121
    122head-y		:= arch/s390/kernel/head64.o
    123
    124libs-y		+= arch/s390/lib/
    125drivers-y	+= drivers/s390/
    126
    127boot		:= arch/s390/boot
    128syscalls	:= arch/s390/kernel/syscalls
    129tools		:= arch/s390/tools
    130
    131all: bzImage
    132
    133#KBUILD_IMAGE is necessary for packaging targets like rpm-pkg, deb-pkg...
    134KBUILD_IMAGE	:= $(boot)/bzImage
    135
    136install:
    137	$(call cmd,install)
    138
    139bzImage: vmlinux
    140	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
    141
    142zfcpdump:
    143	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
    144
    145vdso_install:
    146	$(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
    147
    148archheaders:
    149	$(Q)$(MAKE) $(build)=$(syscalls) uapi
    150
    151archprepare:
    152	$(Q)$(MAKE) $(build)=$(syscalls) kapi
    153	$(Q)$(MAKE) $(build)=$(tools) kapi
    154ifeq ($(KBUILD_EXTMOD),)
    155# We need to generate vdso-offsets.h before compiling certain files in kernel/.
    156# In order to do that, we should use the archprepare target, but we can't since
    157# asm-offsets.h is included in some files used to generate vdso-offsets.h, and
    158# asm-offsets.h is built in prepare0, for which archprepare is a dependency.
    159# Therefore we need to generate the header after prepare0 has been made, hence
    160# this hack.
    161prepare: vdso_prepare
    162vdso_prepare: prepare0
    163	$(Q)$(MAKE) $(build)=arch/s390/kernel/vdso64 include/generated/vdso64-offsets.h
    164	$(if $(CONFIG_COMPAT),$(Q)$(MAKE) \
    165		$(build)=arch/s390/kernel/vdso32 include/generated/vdso32-offsets.h)
    166endif
    167
    168# Don't use tabs in echo arguments
    169define archhelp
    170  echo	'* bzImage         - Kernel image for IPL ($(boot)/bzImage)'
    171  echo	'  install         - Install kernel using'
    172  echo	'                    (your) ~/bin/$(INSTALLKERNEL) or'
    173  echo	'                    (distribution) /sbin/$(INSTALLKERNEL) or'
    174  echo	'                    install to $$(INSTALL_PATH)'
    175endef