7a0c0ff7ee
CPUTYPE?=native causes -march=native to be added to the command line. When the host machine is haswell, this causes some versions of clang to generate code that can't execute in the efi boot loader environment. Set _CPUCFLAGS= to undo what's done bsd.cpu.mk. bsd.cpu.mk is included too early to control with NO_CPU_CFLAGS here. The only other option is to put that in all the Makefiles, and this is less tedious and error prone. PR: 194641 Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D31187 MFC After: 1 week
253 lines
7.3 KiB
Makefile
253 lines
7.3 KiB
Makefile
# $FreeBSD$
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.if !defined(__BOOT_DEFS_MK__)
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__BOOT_DEFS_MK__=${MFILE}
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# We need to define all the MK_ options before including src.opts.mk
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# because it includes bsd.own.mk which needs the right MK_ values,
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# espeically MK_CTF.
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MK_CTF= no
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MK_SSP= no
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MK_PROFILE= no
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MAN=
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.if !defined(PIC)
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NO_PIC=
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INTERNALLIB=
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.endif
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# Should be NO_CPU_FLAGS, but bsd.cpu.mk is included too early in bsd.init.mk
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# via the early include of bsd.opts.mk. Moving Makefile.inc include earlier in
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# that file causes weirdness, so this is the next best thing. We need to do this
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# because the loader needs very specific flags to work right, and things like
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# CPUTYPE?=native prevent that, and introduce an endless game of whack-a-mole
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# to disable more and more features. Boot loader performance is never improved
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# enough to make that hassle worth chasing.
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_CPUCFLAGS=
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.include <src.opts.mk>
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.include <bsd.linker.mk>
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WARNS?= 1
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BOOTSRC= ${SRCTOP}/stand
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EFISRC= ${BOOTSRC}/efi
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EFIINC= ${EFISRC}/include
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EFIINCMD= ${EFIINC}/${MACHINE}
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FDTSRC= ${BOOTSRC}/fdt
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FICLSRC= ${BOOTSRC}/ficl
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LDRSRC= ${BOOTSRC}/common
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LIBLUASRC= ${BOOTSRC}/liblua
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LIBOFWSRC= ${BOOTSRC}/libofw
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LUASRC= ${SRCTOP}/contrib/lua/src
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SASRC= ${BOOTSRC}/libsa
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SYSDIR= ${SRCTOP}/sys
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UBOOTSRC= ${BOOTSRC}/uboot
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ZFSSRC= ${SASRC}/zfs
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OZFS= ${SRCTOP}/sys/contrib/openzfs
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ZFSOSSRC= ${OZFS}/module/os/freebsd/
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ZFSOSINC= ${OZFS}/include/os/freebsd
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LIBCSRC= ${SRCTOP}/lib/libc
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BOOTOBJ= ${OBJTOP}/stand
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# BINDIR is where we install
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BINDIR?= /boot
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# LUAPATH is where we search for and install lua scripts.
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LUAPATH?= /boot/lua
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FLUASRC?= ${SRCTOP}/libexec/flua
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LIBSA= ${BOOTOBJ}/libsa/libsa.a
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.if ${MACHINE} == "i386"
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LIBSA32= ${LIBSA}
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.else
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LIBSA32= ${BOOTOBJ}/libsa32/libsa32.a
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.endif
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# Standard options:
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CFLAGS+= -nostdinc
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# Allow CFLAGS_EARLY.file/target so that code that needs specific stack
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# of include paths can set them up before our include paths. Normally
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# the only thing that should be there are -I directives, and as few of
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# those as possible.
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CFLAGS+= ${CFLAGS_EARLY} ${CFLAGS_EARLY.${.IMPSRC:T}} ${CFLAGS_EARLY.${.TARGET:T}}
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.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
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CFLAGS+= -I${BOOTOBJ}/libsa32
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.else
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CFLAGS+= -I${BOOTOBJ}/libsa
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.endif
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CFLAGS+= -I${SASRC} -D_STANDALONE
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CFLAGS+= -I${SYSDIR}
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# Spike the floating point interfaces
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CFLAGS+= -Ddouble=jagged-little-pill -Dfloat=floaty-mcfloatface
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.if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
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# Slim down the image. This saves about 15% in size with clang 6 on x86
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# Our most constrained /boot/loader env is BIOS booting on x86, where
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# our text + data + BTX have to fit into 640k below the ISA hole.
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# Experience has shown that problems arise between ~520k to ~530k.
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CFLAGS.clang+= -Oz
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CFLAGS.gcc+= -Os
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CFLAGS+= -ffunction-sections -fdata-sections
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.endif
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# GELI Support, with backward compat hooks (mostly)
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.if defined(LOADER_NO_GELI_SUPPORT)
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MK_LOADER_GELI=no
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.warning "Please move from LOADER_NO_GELI_SUPPORT to WITHOUT_LOADER_GELI"
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.endif
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.if defined(LOADER_GELI_SUPPORT)
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MK_LOADER_GELI=yes
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.warning "Please move from LOADER_GELI_SUPPORT to WITH_LOADER_GELI"
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.endif
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.if ${MK_LOADER_GELI} == "yes"
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CFLAGS+= -DLOADER_GELI_SUPPORT
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CFLAGS+= -I${SASRC}/geli
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.endif # MK_LOADER_GELI
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# These should be confined to loader.mk, but can't because uboot/lib
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# also uses it. It's part of loader, but isn't a loader so we can't
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# just include loader.mk
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.if ${LOADER_DISK_SUPPORT:Uyes} == "yes"
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CFLAGS+= -DLOADER_DISK_SUPPORT
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.endif
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# Machine specific flags for all builds here
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# Ensure PowerPC64 and PowerPC64LE boot loaders are compiled as 32 bit
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# and in big endian.
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.if ${MACHINE_ARCH:Mpowerpc64*} != ""
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CFLAGS+= -m32 -mcpu=powerpc -mbig-endian
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.endif
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# For amd64, there's a bit of mixed bag. Some of the tree (i386, lib*32) is
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# build 32-bit and some 64-bit (lib*, efi). Centralize all the 32-bit magic here
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# and activate it when DO32 is explicitly defined to be 1.
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.if ${MACHINE_ARCH} == "amd64" && ${DO32:U0} == 1
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CFLAGS+= -m32
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# LD_FLAGS is passed directly to ${LD}, not via ${CC}:
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LD_FLAGS+= -m elf_i386_fbsd
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AFLAGS+= --32
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.endif
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SSP_CFLAGS=
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# Add in the no float / no SIMD stuff and announce we're freestanding
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# aarch64 and riscv don't have -msoft-float, but all others do.
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CFLAGS+= -ffreestanding ${CFLAGS_NO_SIMD}
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.if ${MACHINE_CPUARCH} == "aarch64"
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CFLAGS+= -mgeneral-regs-only -ffixed-x18 -fPIC
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.elif ${MACHINE_CPUARCH} == "riscv"
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CFLAGS+= -march=rv64imac -mabi=lp64 -fPIC
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CFLAGS.clang+= -mcmodel=medium
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CFLAGS.gcc+= -mcmodel=medany
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.else
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CFLAGS+= -msoft-float
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.endif
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# -msoft-float seems to be insufficient for powerpcspe
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.if ${MACHINE_ARCH} == "powerpcspe"
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CFLAGS+= -mno-spe
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.endif
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.if ${MACHINE_CPUARCH} == "i386" || (${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 1)
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CFLAGS+= -march=i386
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CFLAGS.gcc+= -mpreferred-stack-boundary=2
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.endif
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.if ${MACHINE_CPUARCH} == "amd64" && ${DO32:U0} == 0
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CFLAGS+= -fPIC -mno-red-zone
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.endif
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.if ${MACHINE_CPUARCH} == "arm"
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# Do not generate movt/movw, because the relocation fixup for them does not
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# translate to the -Bsymbolic -pie format required by self_reloc() in loader(8).
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# Also, the fpu is not available in a standalone environment.
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CFLAGS.clang+= -mno-movt
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CFLAGS.clang+= -mfpu=none
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CFLAGS+= -fPIC
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.endif
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# Some RISC-V linkers have support for relaxations, while some (lld) do not
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# yet. If this is the case we inhibit the compiler from emitting relaxations.
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.if ${LINKER_FEATURES:Mriscv-relaxations} == ""
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CFLAGS+= -mno-relax
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.endif
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# The boot loader build uses dd status=none, where possible, for reproducible
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# build output (since performance varies from run to run). Trouble is that
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# option was recently (10.3) added to FreeBSD and is non-standard. Only use it
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# when this test succeeds rather than require dd to be a bootstrap tool.
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DD_NOSTATUS!=(dd status=none count=0 2> /dev/null && echo status=none) || true
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DD=dd ${DD_NOSTATUS}
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.if ${MACHINE_CPUARCH} == "mips"
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CFLAGS+= -G0 -fno-pic -mno-abicalls
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.endif
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#
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# Have a sensible default
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#
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.if ${MK_LOADER_LUA} == "yes"
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LOADER_DEFAULT_INTERP?=lua
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.elif ${MK_FORTH} == "yes"
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LOADER_DEFAULT_INTERP?=4th
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.else
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LOADER_DEFAULT_INTERP?=simp
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.endif
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LOADER_INTERP?=${LOADER_DEFAULT_INTERP}
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# Make sure we use the machine link we're about to create
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CFLAGS+=-I.
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all: ${PROG}
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CLEANFILES+= teken_state.h
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teken.c: teken_state.h
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teken_state.h: ${SYSDIR}/teken/sequences
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awk -f ${SYSDIR}/teken/gensequences \
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${SYSDIR}/teken/sequences > teken_state.h
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.if !defined(NO_OBJ)
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_ILINKS=include/machine
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.if ${MACHINE} != ${MACHINE_CPUARCH} && ${MACHINE} != "arm64"
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_ILINKS+=include/${MACHINE_CPUARCH}
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.endif
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.if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
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_ILINKS+=include/x86
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.endif
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CFLAGS+= -Iinclude
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CLEANDIRS+= include
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beforedepend: ${_ILINKS}
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beforebuild: ${_ILINKS}
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# Ensure that the links exist without depending on it when it exists which
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# causes all the modules to be rebuilt when the directory pointed to changes.
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.for _link in ${_ILINKS}
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.if !exists(${.OBJDIR}/${_link})
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${OBJS}: ${_link}
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.endif # _link exists
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.endfor
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.NOPATH: ${_ILINKS}
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${_ILINKS}: .NOMETA
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@case ${.TARGET:T} in \
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machine) \
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if [ ${DO32:U0} -eq 0 ]; then \
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path=${SYSDIR}/${MACHINE}/include ; \
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else \
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path=${SYSDIR}/${MACHINE:C/amd64/i386/}/include ; \
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fi ;; \
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*) \
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path=${SYSDIR}/${.TARGET:T}/include ;; \
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esac ; \
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case ${.TARGET} in \
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*/*) mkdir -p ${.TARGET:H};; \
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esac ; \
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path=`(cd $$path && /bin/pwd)` ; \
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${ECHO} ${.TARGET} "->" $$path ; \
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ln -fns $$path ${.TARGET}
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.endif # !NO_OBJ
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.endif # __BOOT_DEFS_MK__
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