153 lines
5.3 KiB
Python
153 lines
5.3 KiB
Python
# -*- mode:python -*-
|
|
|
|
# Copyright (c) 2006 The Regents of The University of Michigan
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are
|
|
# met: redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer;
|
|
# redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution;
|
|
# neither the name of the copyright holders nor the names of its
|
|
# contributors may be used to endorse or promote products derived from
|
|
# this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
#
|
|
# Authors: Steve Reinhardt
|
|
|
|
import os.path
|
|
|
|
# Import build environment variable from SConstruct.
|
|
Import('env')
|
|
|
|
# Right now there are no source files immediately in this directory
|
|
sources = []
|
|
|
|
#################################################################
|
|
#
|
|
# ISA "switch header" generation.
|
|
#
|
|
# Auto-generate arch headers that include the right ISA-specific
|
|
# header based on the setting of THE_ISA preprocessor variable.
|
|
#
|
|
#################################################################
|
|
|
|
# List of headers to generate
|
|
isa_switch_hdrs = Split('''
|
|
arguments.hh
|
|
constants.hh
|
|
faults.hh
|
|
isa_traits.hh
|
|
process.hh
|
|
regfile.hh
|
|
stacktrace.hh
|
|
tlb.hh
|
|
types.hh
|
|
utility.hh
|
|
vtophys.hh
|
|
''')
|
|
|
|
# Generate the header. target[0] is the full path of the output
|
|
# header to generate. 'source' is a dummy variable, since we get the
|
|
# list of ISAs from env['ALL_ISA_LIST'].
|
|
def gen_switch_hdr(target, source, env):
|
|
fname = str(target[0])
|
|
basename = os.path.basename(fname)
|
|
f = open(fname, 'w')
|
|
f.write('#include "arch/isa_specific.hh"\n')
|
|
cond = '#if'
|
|
for isa in env['ALL_ISA_LIST']:
|
|
f.write('%s THE_ISA == %s_ISA\n#include "arch/%s/%s"\n'
|
|
% (cond, isa.upper(), isa, basename))
|
|
cond = '#elif'
|
|
f.write('#else\n#error "THE_ISA not set"\n#endif\n')
|
|
f.close()
|
|
return 0
|
|
|
|
# String to print when generating header
|
|
def gen_switch_hdr_string(target, source, env):
|
|
return "Generating ISA switch header " + str(target[0])
|
|
|
|
# Build SCons Action object. 'varlist' specifies env vars that this
|
|
# action depends on; when env['ALL_ISA_LIST'] changes these actions
|
|
# should get re-executed.
|
|
switch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string,
|
|
varlist=['ALL_ISA_LIST'])
|
|
|
|
# Instantiate actions for each header
|
|
for hdr in isa_switch_hdrs:
|
|
env.Command(hdr, [], switch_hdr_action)
|
|
|
|
#################################################################
|
|
#
|
|
# Include architecture-specific files.
|
|
#
|
|
#################################################################
|
|
|
|
#
|
|
# Build a SCons scanner for ISA files
|
|
#
|
|
import SCons.Scanner
|
|
|
|
isa_scanner = SCons.Scanner.Classic("ISAScan",
|
|
[".isa", ".ISA"],
|
|
"SRCDIR",
|
|
r'^\s*##include\s+"([\w/.-]*)"')
|
|
|
|
env.Append(SCANNERS = isa_scanner)
|
|
|
|
#
|
|
# Now create a Builder object that uses isa_parser.py to generate C++
|
|
# output from the ISA description (*.isa) files.
|
|
#
|
|
|
|
# Convert to File node to fix path
|
|
isa_parser = File('isa_parser.py')
|
|
cpu_models_file = File('../cpu/cpu_models.py')
|
|
|
|
# This sucks in the defintions of the CpuModel objects.
|
|
execfile(cpu_models_file.srcnode().abspath)
|
|
|
|
# Several files are generated from the ISA description.
|
|
# We always get the basic decoder and header file.
|
|
isa_desc_gen_files = Split('decoder.cc decoder.hh')
|
|
# We also get an execute file for each selected CPU model.
|
|
isa_desc_gen_files += [CpuModel.dict[cpu].filename
|
|
for cpu in env['CPU_MODELS']]
|
|
|
|
# The emitter patches up the sources & targets to include the
|
|
# autogenerated files as targets and isa parser itself as a source.
|
|
def isa_desc_emitter(target, source, env):
|
|
return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source)
|
|
|
|
# Pieces are in place, so create the builder.
|
|
isa_desc_builder = Builder(action='python2.4 $SOURCES $TARGET.dir $CPU_MODELS',
|
|
emitter = isa_desc_emitter)
|
|
|
|
env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder })
|
|
|
|
#
|
|
# Now include other ISA-specific sources from the ISA subdirectories.
|
|
#
|
|
|
|
isa = env['TARGET_ISA'] # someday this may be a list of ISAs
|
|
|
|
# Let the target architecture define what additional sources it needs
|
|
sources += SConscript(os.path.join(isa, 'SConscript'),
|
|
exports = 'env', duplicate = False)
|
|
|
|
Return('sources')
|