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linux/arch/mips/boot/compressed/Makefile
Masahiro Yamada 7f7f6f7ad6 Makefile: remove redundant tool coverage variables 
Now Kbuild provides reasonable defaults for objtool, sanitizers, and
profilers.

Remove redundant variables.

Note:

This commit changes the coverage for some objects:

  - include arch/mips/vdso/vdso-image.o into UBSAN, GCOV, KCOV
  - include arch/sparc/vdso/vdso-image-*.o into UBSAN
  - include arch/sparc/vdso/vma.o into UBSAN
  - include arch/x86/entry/vdso/extable.o into KASAN, KCSAN, UBSAN, GCOV, KCOV
  - include arch/x86/entry/vdso/vdso-image-*.o into KASAN, KCSAN, UBSAN, GCOV, KCOV
  - include arch/x86/entry/vdso/vdso32-setup.o into KASAN, KCSAN, UBSAN, GCOV, KCOV
  - include arch/x86/entry/vdso/vma.o into GCOV, KCOV
  - include arch/x86/um/vdso/vma.o into KASAN, GCOV, KCOV

I believe these are positive effects because all of them are kernel
space objects.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Roberto Sassu <roberto.sassu@huawei.com>
2024-05-14 23:35:48 +09:00

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Makefile
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#
# This file is subject to the terms and conditions of the GNU General Public
# License.
#
# Adapted for MIPS Pete Popov, Dan Malek
#
# Copyright (C) 1994 by Linus Torvalds
# Adapted for PowerPC by Gary Thomas
# modified by Cort (cort@cs.nmt.edu)
#
# Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University
# Author: Wu Zhangjin <wuzhangjin@gmail.com>
#
include $(srctree)/arch/mips/Kbuild.platforms
# set the default size of the mallocing area for decompressing
BOOT_HEAP_SIZE := 0x400000
# Disable Function Tracer
KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE), $(KBUILD_CFLAGS))
KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
# Disable lq/sq in zboot
ifdef CONFIG_CPU_LOONGSON64
KBUILD_CFLAGS := $(filter-out -march=loongson3a, $(KBUILD_CFLAGS)) -march=mips64r2
endif
KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ -D__DISABLE_EXPORTS \
-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
-DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
# decompressor objects (linked with vmlinuz)
vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o $(obj)/bswapsi.o
ifdef CONFIG_DEBUG_ZBOOT
vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o
vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o
vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o
endif
vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o
vmlinuzobjs-$(CONFIG_KERNEL_ZSTD) += $(obj)/bswapdi.o $(obj)/ashldi3.o $(obj)/clz_ctz.o
targets := $(notdir $(vmlinuzobjs-y))
targets += vmlinux.bin
OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
$(call if_changed,objcopy)
tool_$(CONFIG_KERNEL_GZIP) = gzip
tool_$(CONFIG_KERNEL_BZIP2) = bzip2_with_size
tool_$(CONFIG_KERNEL_LZ4) = lz4_with_size
tool_$(CONFIG_KERNEL_LZMA) = lzma_with_size
tool_$(CONFIG_KERNEL_LZO) = lzo_with_size
tool_$(CONFIG_KERNEL_XZ) = xzkern_with_size
tool_$(CONFIG_KERNEL_ZSTD) = zstd22_with_size
targets += vmlinux.bin.z
$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
$(call if_changed,$(tool_y))
targets += piggy.o dummy.o
OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
--set-section-flags=.image=contents,alloc,load,readonly,data
$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
$(call if_changed,objcopy)
HOSTCFLAGS_calc_vmlinuz_load_addr.o += $(LINUXINCLUDE)
# Calculate the load address of the compressed kernel image
hostprogs := calc_vmlinuz_load_addr
ifneq (0x0,$(CONFIG_ZBOOT_LOAD_ADDRESS))
zload-y = $(CONFIG_ZBOOT_LOAD_ADDRESS)
endif
ifneq ($(zload-y),)
VMLINUZ_LOAD_ADDRESS := $(zload-y)
else
VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
$(obj)/vmlinux.bin $(LINKER_LOAD_ADDRESS))
endif
UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
vmlinuzobjs-y += $(obj)/piggy.o
targets += ../../../../vmlinuz
quiet_cmd_zld = LD $@
cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
quiet_cmd_strip = STRIP $@
cmd_strip = $(STRIP) -s $@
$(objtree)/vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
$(call cmd,zld)
$(call cmd,strip)
objboot := $(objtree)/arch/mips/boot
$(objboot)/vmlinuz: $(objtree)/vmlinuz FORCE
#
# Some DECstations need all possible sections of an ECOFF executable
#
ifdef CONFIG_MACH_DECSTATION
e2eflag := -a
endif
# elf2ecoff can only handle 32bit image
hostprogs += ../elf2ecoff
ifdef CONFIG_32BIT
VMLINUZ = $(objtree)/vmlinuz
else
VMLINUZ = $(objboot)/vmlinuz.32
endif
targets += ../vmlinuz.32
quiet_cmd_32 = OBJCOPY $@
cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
$(objboot)/vmlinuz.32: $(objtree)/vmlinuz
$(call cmd,32)
targets += ../vmlinuz.ecoff
quiet_cmd_ecoff = ECOFF $@
cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
$(objboot)/vmlinuz.ecoff: $(objboot)/elf2ecoff $(VMLINUZ)
$(call cmd,ecoff)
targets += ../vmlinuz.bin
OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
$(objboot)/vmlinuz.bin: $(objtree)/vmlinuz
$(call cmd,objcopy)
targets += ../vmlinuz.srec
OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
$(objboot)/vmlinuz.srec: $(objtree)/vmlinuz
$(call cmd,objcopy)
targets += ../uzImage.bin
$(objboot)/uzImage.bin: $(objboot)/vmlinuz.bin FORCE
$(call if_changed,uimage,none)
#
# Flattened Image Tree (.itb) image
#
ifeq ($(ADDR_BITS),32)
itb_addr_cells = 1
endif
ifeq ($(ADDR_BITS),64)
itb_addr_cells = 2
endif
targets += ../vmlinuz.its.S
quiet_cmd_its_cat = CAT $@
cmd_its_cat = cat $(real-prereqs) >$@
$(objboot)/vmlinuz.its.S: $(addprefix $(srctree)/arch/mips/$(PLATFORM)/,$(ITS_INPUTS)) FORCE
$(call if_changed,its_cat)
targets += ../vmlinuz.its
quiet_cmd_cpp_its_S = ITS $@
cmd_cpp_its_S = $(CPP) -P -C -o $@ $< \
-DKERNEL_NAME="\"Linux $(KERNELRELEASE)\"" \
-DVMLINUX_BINARY="\"$(2)\"" \
-DVMLINUX_COMPRESSION="\"none\"" \
-DVMLINUX_LOAD_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \
-DVMLINUX_ENTRY_ADDRESS=$(VMLINUZ_LOAD_ADDRESS) \
-DADDR_BITS=$(ADDR_BITS) \
-DADDR_CELLS=$(itb_addr_cells)
$(objboot)/vmlinuz.its: $(objboot)/vmlinuz.its.S FORCE
$(call if_changed,cpp_its_S,vmlinuz.bin)
targets += ../vmlinuz.itb
quiet_cmd_itb-image = ITB $@
cmd_itb-image = \
env PATH="$(objtree)/scripts/dtc:$(PATH)" \
$(BASH) $(MKIMAGE) \
-D "-I dts -O dtb -p 500 \
--include $(objtree)/arch/mips \
--warning no-unit_address_vs_reg" \
-f $(2) $@
$(objboot)/vmlinuz.itb: $(objboot)/vmlinuz.its $(objboot)/vmlinuz.bin FORCE
$(call if_changed,itb-image,$<)
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