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8e1a7e29b6
Some, particularly KASAN, may insert redzones around global symbols, resulting in incorrect offset definitions because genassym.sh (ab)uses symbol sizes to assign semantic meaning. (Ideally I would be able to define this pattern in one place, but I haven't found a way to define a GENSYM_CFLAGS that actually works for all of the consumers (kern.post.mk, kmod.mk, sys/conf/files*).) MFC after: 1 week Sponsored by: Klara, Inc. Sponsored by: Juniper Networks, Inc.
113 lines
3.1 KiB
Makefile
113 lines
3.1 KiB
Makefile
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.PATH: ${SRCTOP}/sys/compat/linux ${SRCTOP}/sys/${MACHINE}/linux
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.if ${MACHINE_CPUARCH} == "amd64"
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.PATH: ${SRCTOP}/sys/x86/linux
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.endif
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KMOD= linux64
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SRCS= linux_dummy_machdep.c \
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linux_elf64.c \
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linux_event.c \
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linux_file.c \
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linux_fork.c \
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linux_futex.c \
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linux_getcwd.c \
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linux_ioctl.c \
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linux_ipc.c \
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linux_machdep.c \
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linux_misc.c \
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linux_ptrace.c \
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linux_rseq.c \
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linux_signal.c \
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linux_socket.c \
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linux_stats.c \
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linux_syscalls.c \
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linux_sysctl.c \
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linux_sysent.c \
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linux_sysvec.c \
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linux_time.c \
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linux_vdso.c \
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linux_timer.c \
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linux_xattr.c \
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opt_ktrace.h \
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opt_inet6.h \
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opt_posix.h \
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bus_if.h \
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device_if.h \
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vnode_if.h \
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linux_support.S
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.if ${MACHINE_CPUARCH} == "amd64"
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SRCS+= linux_dummy_x86.c
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.endif
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DPSRCS= assym.inc linux_genassym.c
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# XXX: for assym.inc
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SRCS+= opt_kstack_pages.h opt_nfs.h opt_hwpmc_hooks.h
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CLEANFILES= linux_assym.h linux_genassym.o linux_locore.o \
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genassym.o linux_vdso_gtod.o linux_vdso.so.o
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OBJS= linux_vdso.so
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linux_assym.h: linux_genassym.o
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sh ${SYSDIR}/kern/genassym.sh linux_genassym.o > ${.TARGET}
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.if ${MACHINE_CPUARCH} == "amd64"
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VDSOFLAGS=-mcmodel=small -msoft-float
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VDSODEPS=linux_vdso_gettc_x86.inc
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.elif ${MACHINE_CPUARCH} == "aarch64"
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# The Linux uses tiny memory model, but our ld does not know about
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# some of relocation types which is generated by cc
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VDSOFLAGS=-mgeneral-regs-only -mcmodel=small -ffixed-x18
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.endif
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linux_locore.o: linux_assym.h assym.inc
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${CC} -c -x assembler-with-cpp -DLOCORE \
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-fPIC -pipe -O2 -Werror ${VDSOFLAGS} \
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-nostdinc -fasynchronous-unwind-tables \
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-fno-omit-frame-pointer -foptimize-sibling-calls \
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-fno-stack-protector -I. -I${SYSDIR} -I${SRCTOP}/include \
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${.IMPSRC} -o ${.TARGET}
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linux_vdso_gtod.o: linux_vdso_gtod.inc ${VDSODEPS}
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${CC} -c -fPIC -pipe -O2 -Werror ${VDSOFLAGS} \
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-nostdinc -fasynchronous-unwind-tables \
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-fno-omit-frame-pointer -foptimize-sibling-calls \
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-fno-stack-protector -I. -I${SYSDIR} -I${SRCTOP}/include \
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${.IMPSRC} -o ${.TARGET}
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linux_vdso.so.o: linux_locore.o linux_vdso_gtod.o
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${LD} --shared --eh-frame-hdr -soname=linux-vdso.so.1 \
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--no-undefined --hash-style=both -warn-common -nostdlib \
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--strip-debug -s --build-id=sha1 -Bsymbolic \
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-T${SRCTOP}/sys/${MACHINE}/linux/linux_vdso.lds.s \
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-o ${.TARGET} ${.ALLSRC:M*.o}
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.if ${MACHINE_CPUARCH} == "aarch64"
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OBJCOPY_TARGET=--output-target elf64-littleaarch64 --binary-architecture aarch64
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.elif ${MACHINE_CPUARCH} == "amd64"
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OBJCOPY_TARGET=--output-target elf64-x86-64 --binary-architecture i386:x86-64
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.else
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.error ${MACHINE_CPUARCH} not yet supported by linux64
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.endif
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linux_vdso.so: linux_vdso.so.o
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${OBJCOPY} --input-target binary ${OBJCOPY_TARGET} \
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linux_vdso.so.o ${.TARGET}
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${STRIPBIN} -N _binary_linux_vdso_so_o_size ${.TARGET}
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linux_support.o: linux_support.S assym.inc linux_assym.h
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${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
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${.ALLSRC:M*.S:u} -o ${.TARGET}
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linux_genassym.o: offset.inc
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${CC} -c ${CFLAGS:N-flto*:N-fno-common:N-fsanitize*:N-fno-sanitize*} \
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-fcommon ${.IMPSRC}
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.if !defined(KERNBUILDDIR)
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.warning Building Linuxulator outside of a kernel does not make sense
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.endif
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EXPORT_SYMS= YES
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.include <bsd.kmod.mk>
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