racket/c/Mf-a6fb
Matthew Flatt f78dc5724e add pb (portable bytecode) backend
This commit does four things:

 * Adds "pb.ss" and "pb.c", which implement a portable bytecode
   backend and interpreter that is intended for bootstrapping. A
   single set of pb bootfiles can support bootstrapping on all
   platforms --- as long as the C compiler supports a 64-bit integer
   type. The pb machine supports foreign calls for only a small set of
   recognized prototypes, and it does not support foriegn callables.
   Use `./configure --pb` to build the pb variant.

 * Changes the kernel's casts between `ptr` and `void*` types. In a pb
   build, the `ptr` type can be a 64-bit integer type while `void*` is
   a 32-bit pointer type, so casts must go through an intermediate
   integer type.

 * Adjusts the compiler to accomodate run-time-determined endianness.
   Making the compiler agnostic to word size is not practical, but
   only a few pieces depend on the target machine's endianness, and
   those can generally be deferred to a run-time choice of byte-based
   operations. The one exception is that ftype bit fields are not
   allowed unless accompanied by an explicit endianness declaration.

 * Start reducing duplication among platform-specific makefiles. For
   example, `Mf-ta6osx` chains to `Mf-a6osx` to avoid repeating most
   of it. A lot more can be done here.

original commit: 97533fa9d8b8400b0dc1a890768c7d30c91257e0
2020-07-24 13:13:46 -06:00

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# Mf-a6fb
# Copyright 1984-2017 Cisco Systems, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
m ?= a6fb
Cpu ?= X86_64
mdinclude = -I/usr/local/include -I/usr/X11R6/include
mdclib = -L/usr/local/lib -liconv -lm ${ncursesLib} ${threadLibs} -lossp-uuid
C = ${CC} ${CPPFLAGS} ${warningFlags} ${optFlags} ${threadFlags} ${CFLAGS}
o = o
mdsrc ?= i3le.c
mdobj ?= i3le.o
.SUFFIXES:
.SUFFIXES: .c .o
.c.o:
$C -c -D${Cpu} -I${Include} ${zlibInc} ${LZ4Inc} ${mdinclude} $*.c
include Mf-base
${KernelO}: ${kernelobj} ${zlibDep} ${LZ4Dep}
${LD} -r -X -o ${KernelO} ${kernelobj} ${zlibLib} ${LZ4Lib}
${KernelLib}: ${kernelobj}
${AR} ${ARFLAGS} ${KernelLib} ${kernelobj}
${Scheme}: ${Kernel} ${KernelLinkDeps} ${Main}
$C -rdynamic -o ${Scheme} ${Main} ${Kernel} ${mdclib} ${KernelLinkLibs} ${LDFLAGS}
../zlib/configure.log:
(cd ../zlib; ${SetConfigEnv} CFLAGS="${CFLAGS} ${optFlags} -m64" ./configure --64)
../lz4/lib/liblz4.a: ${LZ4Sources}
(cd ../lz4/lib; ${SetConfigEnv} CFLAGS="${CFLAGS} ${optFlags} -m64" ${MAKE} liblz4.a)