freebsd-nq/share/mk/local.meta.sys.mk
Justin Hibbits dc9b124d66 Create a new MACHINE_ARCH for Freescale PowerPC e500v2
Summary:
The Freescale e500v2 PowerPC core does not use a standard FPU.
Instead, it uses a Signal Processing Engine (SPE)--a DSP-style vector processor
unit, which doubles as a FPU.  The PowerPC SPE ABI is incompatible with the
stock powerpc ABI, so a new MACHINE_ARCH was created to deal with this.
Additionaly, the SPE opcodes overlap with Altivec, so these are mutually
exclusive.  Taking advantage of this fact, a new file, powerpc/booke/spe.c, was
created with the same function set as in powerpc/powerpc/altivec.c, so it
becomes effectively a drop-in replacement.  setjmp/longjmp were modified to save
the upper 32-bits of the now-64-bit GPRs (upper 32-bits are only accessible by
the SPE).

Note: This does _not_ support the SPE in the e500v1, as the e500v1 SPE does not
support double-precision floating point.

Also, without a new MACHINE_ARCH it would be impossible to provide binary
packages which utilize the SPE.

Additionally, no work has been done to support ports, work is needed for this.
This also means no newer gcc can yet be used.  However, gcc's powerpc support
has been refactored which would make adding a powerpcspe-freebsd target very
easy.

Test Plan:
This was lightly tested on a RouterBoard RB800 and an AmigaOne A1222
(P1022-based) board, compiled against the new ABI.  Base system utilities
(/bin/sh, /bin/ls, etc) still function appropriately, the system is able to boot
multiuser.

Reviewed By:	bdrewery, imp
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D5683
2016-10-22 01:57:15 +00:00

287 lines
8.1 KiB
Makefile

# $FreeBSD$
# local configuration specific to meta mode
# XXX some of this should be in meta.sys.mk
# we assume that MK_DIRDEPS_BUILD=yes
# we need this until there is an alternative
MK_INSTALL_AS_USER= yes
_default_makeobjdir=$${.CURDIR:S,^$${SRCTOP},$${OBJTOP},}
.if empty(OBJROOT) || ${.MAKE.LEVEL} == 0
.if defined(MAKEOBJDIRPREFIX) && !empty(MAKEOBJDIRPREFIX)
# put things approximately where they want
OBJROOT:=${MAKEOBJDIRPREFIX}${SRCTOP}/
MAKEOBJDIRPREFIX=
.export MAKEOBJDIRPREFIX
.endif
.if empty(MAKEOBJDIR)
# OBJTOP set below
MAKEOBJDIR=${_default_makeobjdir}
# export but do not track
.export-env MAKEOBJDIR
# Expand for our own use
MAKEOBJDIR:= ${MAKEOBJDIR}
.endif
.if !empty(SB)
SB_OBJROOT ?= ${SB}/obj/
# this is what we use below
OBJROOT ?= ${SB_OBJROOT}
.endif
OBJROOT ?= /usr/obj${SRCTOP}/
.if ${OBJROOT:M*/} != ""
OBJROOT:= ${OBJROOT:H:tA}/
.else
OBJROOT:= ${OBJROOT:H:tA}/${OBJROOT:T}
.endif
.export OBJROOT SRCTOP
# we need HOST_TARGET etc below.
.include <host-target.mk>
.export HOST_TARGET
.endif
# from src/Makefile (for universe)
TARGET_ARCHES_arm?= arm armeb armv6
TARGET_ARCHES_arm64?= aarch64
TARGET_ARCHES_mips?= mipsel mips mips64el mips64 mipsn32 mipsn32el
TARGET_ARCHES_powerpc?= powerpc powerpc64 powerpcspe
TARGET_ARCHES_pc98?= i386
TARGET_ARCHES_riscv?= riscv64
# some corner cases
BOOT_MACHINE_DIR.amd64 = boot/i386
MACHINE_ARCH.host = ${_HOST_ARCH}
# the list of machines we support
ALL_MACHINE_LIST?= amd64 arm arm64 i386 mips pc98 powerpc riscv sparc64
.for m in ${ALL_MACHINE_LIST:O:u}
MACHINE_ARCH_LIST.$m?= ${TARGET_ARCHES_${m}:U$m}
MACHINE_ARCH.$m?= ${MACHINE_ARCH_LIST.$m:[1]}
BOOT_MACHINE_DIR.$m ?= boot/$m
.endfor
.ifndef _TARGET_SPEC
.if empty(MACHINE_ARCH)
.if !empty(TARGET_ARCH)
MACHINE_ARCH= ${TARGET_ARCH}
.else
MACHINE_ARCH= ${MACHINE_ARCH.${MACHINE}}
.endif
.endif
MACHINE_ARCH?= ${MACHINE_ARCH.${MACHINE}}
MACHINE_ARCH:= ${MACHINE_ARCH}
.else
# we got here via dirdeps
MACHINE_ARCH:= ${MACHINE_ARCH.${MACHINE}}
.endif
# now because for universe we want to potentially
# build for multiple MACHINE_ARCH per MACHINE
# we need more than MACHINE in TARGET_SPEC
TARGET_SPEC_VARS= MACHINE MACHINE_ARCH
# see dirdeps.mk
.if ${TARGET_SPEC:Uno:M*,*} != ""
_tspec := ${TARGET_SPEC:S/,/ /g}
MACHINE := ${_tspec:[1]}
MACHINE_ARCH := ${_tspec:[2]}
# etc.
# We need to stop that TARGET_SPEC affecting any submakes
# and deal with MACHINE=${TARGET_SPEC} in the environment.
TARGET_SPEC=
# export but do not track
.export-env TARGET_SPEC
.export ${TARGET_SPEC_VARS}
.for v in ${TARGET_SPEC_VARS:O:u}
.if empty($v)
.undef $v
.endif
.endfor
.endif
# make sure we know what TARGET_SPEC is
# as we may need it to find Makefile.depend*
TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
# to be consistent with src/Makefile just concatenate with '.'s
TARGET_OBJ_SPEC:= ${TARGET_SPEC:S;,;.;g}
OBJTOP:= ${OBJROOT}${TARGET_OBJ_SPEC}
.if defined(MAKEOBJDIR)
.if ${MAKEOBJDIR:M*/*} == ""
.error Cannot use MAKEOBJDIR=${MAKEOBJDIR}${.newline}Unset MAKEOBJDIR to get default: MAKEOBJDIR='${_default_makeobjdir}'
.endif
.endif
HOST_OBJTOP ?= ${OBJROOT}${HOST_TARGET}
.if ${OBJTOP} == ${HOST_OBJTOP} || ${REQUESTED_MACHINE:U${MACHINE}} == "host"
MACHINE= host
.if ${TARGET_MACHINE:Uno} == ${HOST_TARGET}
# not what we want
TARGET_MACHINE= host
.endif
.endif
.if ${MACHINE} == "host"
OBJTOP := ${HOST_OBJTOP}
.endif
.if ${.MAKE.LEVEL} == 0
PYTHON ?= /usr/local/bin/python
.export PYTHON
# this works best if share/mk is ready for it.
BUILD_AT_LEVEL0= no
# _SKIP_BUILD is not 100% as it requires wrapping all 'all:' targets to avoid
# building in MAKELEVEL0. Just prohibit 'all' entirely in this case to avoid
# problems.
.if ${MK_DIRDEPS_BUILD} == "yes" && \
${.MAKE.LEVEL} == 0 && ${BUILD_AT_LEVEL0:Uyes:tl} == "no"
.MAIN: dirdeps
.if make(all)
.error DIRDEPS_BUILD: Please run '${MAKE}' instead of '${MAKE} all'.
.endif
.endif
# we want to end up with a singe stage tree for all machines
.if ${MK_STAGING} == "yes"
.if empty(STAGE_ROOT)
STAGE_ROOT?= ${OBJROOT}stage
.export STAGE_ROOT
.endif
.endif
.endif
.if ${MK_STAGING} == "yes"
.if ${MACHINE} == "host"
STAGE_MACHINE= ${HOST_TARGET}
.else
STAGE_MACHINE:= ${TARGET_OBJ_SPEC}
.endif
STAGE_OBJTOP:= ${STAGE_ROOT}/${STAGE_MACHINE}
STAGE_COMMON_OBJTOP:= ${STAGE_ROOT}/common
STAGE_TARGET_OBJTOP:= ${STAGE_ROOT}/${TARGET_OBJ_SPEC}
STAGE_HOST_OBJTOP:= ${STAGE_ROOT}/${HOST_TARGET}
# These are exported for hooking in out-of-tree builds. They will always
# be overridden in sub-makes above when building in-tree.
.export STAGE_OBJTOP STAGE_TARGET_OBJTOP STAGE_HOST_OBJTOP
# Use tools/install.sh which can avoid the need for xinstall for simple cases.
INSTALL?= sh ${SRCTOP}/tools/install.sh
# This is for stage-install to pickup from the environment.
REAL_INSTALL:= ${INSTALL}
.export REAL_INSTALL
STAGE_INSTALL= sh ${.PARSEDIR:tA}/stage-install.sh OBJDIR=${.OBJDIR:tA}
STAGE_LIBDIR= ${STAGE_OBJTOP}${_LIBDIR:U${LIBDIR:U/lib}}
STAGE_INCLUDEDIR= ${STAGE_OBJTOP}${INCLUDEDIR:U/usr/include}
# this is not the same as INCLUDEDIR
STAGE_INCSDIR= ${STAGE_OBJTOP}${INCSDIR:U/include}
# the target is usually an absolute path
STAGE_SYMLINKS_DIR= ${STAGE_OBJTOP}
LDFLAGS_LAST+= -Wl,-rpath-link,${STAGE_LIBDIR}
.if ${MK_SYSROOT} == "yes"
SYSROOT?= ${STAGE_OBJTOP}
.else
LDFLAGS_LAST+= -L${STAGE_LIBDIR}
.endif
.endif # MK_STAGING
# this is sufficient for most of the tree.
.MAKE.DEPENDFILE_DEFAULT = ${.MAKE.DEPENDFILE_PREFIX}
# but if we have a machine qualified file it should be used in preference
.MAKE.DEPENDFILE_PREFERENCE = \
${.MAKE.DEPENDFILE_PREFIX}.${MACHINE} \
${.MAKE.DEPENDFILE_PREFIX}
.undef .MAKE.DEPENDFILE
.include "sys.dependfile.mk"
.if ${.MAKE.LEVEL} > 0 && ${MACHINE} == "host" && ${.MAKE.DEPENDFILE:E} != "host"
# we can use this but should not update it.
UPDATE_DEPENDFILE= NO
.endif
# define the list of places that contain files we are responsible for
.MAKE.META.BAILIWICK = ${SB} ${OBJROOT} ${STAGE_ROOT}
CSU_DIR.${MACHINE_ARCH} ?= csu/${MACHINE_ARCH}
CSU_DIR := ${CSU_DIR.${MACHINE_ARCH}}
.if !empty(TIME_STAMP)
TRACER= ${TIME_STAMP} ${:U}
.endif
.if !defined(_RECURSING_PROGS) && !defined(_RECURSING_CRUNCH) && \
!make(print-dir)
WITH_META_STATS= t
.endif
# toolchains can be a pain - especially bootstrappping them
.if ${MACHINE} == "host"
MK_SHARED_TOOLCHAIN= no
.endif
TOOLCHAIN_VARS= AS AR CC CLANG_TBLGEN CXX CPP LD NM OBJCOPY RANLIB \
STRINGS SIZE LLVM_TBLGEN
_toolchain_bin_CLANG_TBLGEN= /usr/bin/clang-tblgen
_toolchain_bin_LLVM_TBLGEN= /usr/bin/llvm-tblgen
_toolchain_bin_CXX= /usr/bin/c++
.ifdef WITH_TOOLSDIR
TOOLSDIR?= ${HOST_OBJTOP}/tools
.elif defined(STAGE_HOST_OBJTOP)
TOOLSDIR?= ${STAGE_HOST_OBJTOP}
.endif
# Only define if it exists in case user didn't run bootstrap-tools. Otherwise
# the tool will be built during the build. Building it assumes it is
# TARGET==MACHINE.
.if exists(${HOST_OBJTOP}/tools${.CURDIR})
BTOOLSPATH= ${HOST_OBJTOP}/tools${.CURDIR}
.endif
# Don't use the bootstrap tools logic on itself.
.if ${.TARGETS:Mbootstrap-tools} == "" && \
!make(showconfig) && \
!defined(BOOTSTRAPPING_TOOLS) && !empty(TOOLSDIR) && ${.MAKE.LEVEL} == 0
.for dir in /sbin /bin /usr/sbin /usr/bin
PATH:= ${TOOLSDIR}${dir}:${PATH}
.endfor
.export PATH
# Prefer the TOOLSDIR version of the toolchain if present vs the host version.
.for var in ${TOOLCHAIN_VARS}
_toolchain_bin.${var}= ${TOOLSDIR}${_toolchain_bin_${var}:U/usr/bin/${var:tl}}
.if exists(${_toolchain_bin.${var}})
HOST_${var}?= ${_toolchain_bin.${var}}
.export HOST_${var}
.endif
.endfor
.endif
.for var in ${TOOLCHAIN_VARS}
HOST_${var}?= ${_toolchain_bin_${var}:U/usr/bin/${var:tl}}
.endfor
.if ${MACHINE} == "host"
.for var in ${TOOLCHAIN_VARS}
${var}= ${HOST_${var}}
.endfor
.endif
.if ${MACHINE:Nhost:Ncommon} != "" && ${MACHINE} != ${HOST_MACHINE}
# cross-building
.if !defined(FREEBSD_REVISION)
FREEBSD_REVISION!= sed -n '/^REVISION=/{s,.*=,,;s,",,g;p; }' ${SRCTOP}/sys/conf/newvers.sh
.export FREEBSD_REVISION
.endif
CROSS_TARGET_FLAGS= -target ${MACHINE_ARCH}-unknown-freebsd${FREEBSD_REVISION}
CFLAGS+= ${CROSS_TARGET_FLAGS}
ACFLAGS+= ${CROSS_TARGET_FLAGS}
LDFLAGS+= -Wl,-m -Wl,elf_${MACHINE_ARCH}_fbsd
.endif
META_MODE+= missing-meta=yes
.if empty(META_MODE:Mnofilemon)
META_MODE+= missing-filemon=yes
.endif