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8b3165e545
linux-imx/arch/mips/boot/compressed/Makefile
Xingxing Su 8b3165e545 MIPS: Enable GCOV 
Enable gcov profiling of the entire kernel on mips. Required changes
include disabling profiling for:

* arch/kernel/boot/compressed: not linked to main kernel.

Lightly tested on Loongson 3A3000 an 3A4000, seems to work as expected.

without "GCOV_PROFILE := n" in compressed Makefile,
build errors as follows:
...
ld: arch/mips/boot/compressed/string.o:(.data+0x88):
 undefined reference to `__gcov_merge_add'
ld: arch/mips/boot/compressed/string.o:
 in function `_GLOBAL__sub_I_00100_0_memcpy':
string.c:(.text.startup+0x4): undefined reference to `__gcov_init'
ld: arch/mips/boot/compressed/string.o:
 in function `_GLOBAL__sub_D_00100_1_memcpy':
string.c:(.text.exit+0x0): undefined reference to `__gcov_exit'
...

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Xingxing Su <suxingxing@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-12-04 13:00:53 +01:00

5.9 KiB
Raw Blame History

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 -pg, $(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)

Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.

KCOV_INSTRUMENT := n GCOV_PROFILE := n

decompressor objects (linked with vmlinuz)

vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.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

extra-y += uart-ath79.c $(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c $(call cmd,shipped)

vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o

extra-y += ashldi3.c $(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE $(call if_changed,shipped)

extra-y += bswapsi.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE $(call if_changed,shipped)

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 tool_$(CONFIG_KERNEL_LZ4) = lz4 tool_$(CONFIG_KERNEL_LZMA) = lzma tool_$(CONFIG_KERNEL_LZO) = lzo tool_$(CONFIG_KERNEL_XZ) = xzkern tool_$(CONFIG_KERNEL_ZSTD) = zstd22

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 ($(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 $(call if_changed,itb-image,$<)