67 lines
2.1 KiB
Makefile
67 lines
2.1 KiB
Makefile
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# SPDX-License-Identifier: GPL-2.0-or-later
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# Copyright (c) 2021 Linux Test Project
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top_srcdir ?= ../../..
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include $(top_srcdir)/include/mk/testcases.mk
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ASFLAGS =
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CPPFLAGS += -I$(abs_srcdir)/include
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GUEST_CPPFLAGS = $(CPPFLAGS) -DCOMPILE_PAYLOAD
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GUEST_CFLAGS = -ffreestanding -O2 -Wall -fno-asynchronous-unwind-tables -mno-mmx -mno-sse
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GUEST_LDFLAGS = -nostdlib -Wl,--build-id=none -fno-stack-protector
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GUEST_LDLIBS =
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KVM_LD ?= $(LD)
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FILTER_OUT_MAKE_TARGETS := lib_guest lib_host lib_x86
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ifeq ($(HOST_CPU),x86_64)
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ifneq (,$(findstring m32,$(CFLAGS)))
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HOST_CPU = x86
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endif
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endif
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ifeq ($(HOST_CPU),x86)
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GUEST_CFLAGS += -m32
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ASFLAGS += --32
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endif
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# Some distros enable -pie by default. That breaks KVM payload linking.
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ifdef LTP_CFLAGS_NOPIE
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GUEST_CFLAGS += -fno-pie
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GUEST_LDFLAGS += -no-pie
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endif
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GUEST_LDFLAGS += -Wl,-T$(abs_srcdir)/linker/$(HOST_CPU).lds
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ARCH_OBJ = bootstrap_$(HOST_CPU).o
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ifeq ($(HOST_CPU),x86_64)
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ARCH_OBJ += lib_x86.o
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BIN_FORMAT=elf64-x86-64
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else ifeq ($(HOST_CPU),x86)
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ARCH_OBJ += lib_x86.o
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BIN_FORMAT=elf32-i386
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else
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MAKE_TARGETS =
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endif
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lib_guest.o $(ARCH_OBJ): CPPFLAGS := $(GUEST_CPPFLAGS)
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lib_guest.o $(ARCH_OBJ): CFLAGS := $(GUEST_CFLAGS)
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include $(top_srcdir)/include/mk/generic_leaf_target.mk
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%-payload.o: %.c lib_guest.o $(ARCH_OBJ)
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ifdef VERBOSE
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$(CC) $(GUEST_CPPFLAGS) $(GUEST_CFLAGS) $(GUEST_LDFLAGS) -o $*-payload.elf $^ $(GUEST_LDLIBS)
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objcopy -O binary -j .init.boot -j .text -j .data -j .init -j .preinit_array -j .init_array --gap-fill=0 $*-payload.elf $*-payload.bin
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$(KVM_LD) -z noexecstack -r -T $(abs_srcdir)/linker/payload.lds --oformat=$(BIN_FORMAT) -o $@ $*-payload.bin
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else
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@$(CC) $(GUEST_CPPFLAGS) $(GUEST_CFLAGS) $(GUEST_LDFLAGS) -o $*-payload.elf $^ $(GUEST_LDLIBS)
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@objcopy -O binary -j .init.boot -j .text -j .data -j .init -j .preinit_array -j .init_array --gap-fill=0 $*-payload.elf $*-payload.bin
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@$(KVM_LD) -z noexecstack -r -T $(abs_srcdir)/linker/payload.lds --oformat=$(BIN_FORMAT) -o $@ $*-payload.bin
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@echo KVM_CC $(target_rel_dir)$@
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endif
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@rm $*-payload.elf $*-payload.bin
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$(MAKE_TARGETS): %: %-payload.o lib_host.o
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