SConscript revision 2718
12139SN/A# -*- mode:python -*- 22139SN/A 32139SN/A# Copyright (c) 2006 The Regents of The University of Michigan 42139SN/A# All rights reserved. 52139SN/A# 62139SN/A# Redistribution and use in source and binary forms, with or without 72139SN/A# modification, are permitted provided that the following conditions are 82139SN/A# met: redistributions of source code must retain the above copyright 92139SN/A# notice, this list of conditions and the following disclaimer; 102139SN/A# redistributions in binary form must reproduce the above copyright 112139SN/A# notice, this list of conditions and the following disclaimer in the 122139SN/A# documentation and/or other materials provided with the distribution; 132139SN/A# neither the name of the copyright holders nor the names of its 142139SN/A# contributors may be used to endorse or promote products derived from 152139SN/A# this software without specific prior written permission. 162139SN/A# 172139SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 182139SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 192139SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 202139SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 212139SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 222139SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 232139SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 242139SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 252139SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 262139SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 272139SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 282665Ssaidi@eecs.umich.edu# 292665Ssaidi@eecs.umich.edu# Authors: Steve Reinhardt 302139SN/A 312718Sstever@eecs.umich.eduimport os.path, sys 322139SN/A 332139SN/A# Import build environment variable from SConstruct. 342139SN/AImport('env') 352139SN/A 362152SN/A# Right now there are no source files immediately in this directory 372152SN/Asources = [] 382152SN/A 392152SN/A################################################################# 402139SN/A# 412139SN/A# ISA "switch header" generation. 422139SN/A# 432139SN/A# Auto-generate arch headers that include the right ISA-specific 442139SN/A# header based on the setting of THE_ISA preprocessor variable. 452152SN/A# 462152SN/A################################################################# 472139SN/A 482139SN/A# List of headers to generate 492139SN/Aisa_switch_hdrs = Split(''' 502439SN/A arguments.hh 512439SN/A constants.hh 522439SN/A faults.hh 532139SN/A isa_traits.hh 542439SN/A process.hh 552460SN/A regfile.hh 562439SN/A stacktrace.hh 572171SN/A tlb.hh 582439SN/A types.hh 592439SN/A utility.hh 602170SN/A vtophys.hh 612139SN/A ''') 622139SN/A 632139SN/A# Generate the header. target[0] is the full path of the output 642139SN/A# header to generate. 'source' is a dummy variable, since we get the 652139SN/A# list of ISAs from env['ALL_ISA_LIST']. 662139SN/Adef gen_switch_hdr(target, source, env): 672139SN/A fname = str(target[0]) 682139SN/A basename = os.path.basename(fname) 692139SN/A f = open(fname, 'w') 702139SN/A f.write('#include "arch/isa_specific.hh"\n') 712139SN/A cond = '#if' 722139SN/A for isa in env['ALL_ISA_LIST']: 732139SN/A f.write('%s THE_ISA == %s_ISA\n#include "arch/%s/%s"\n' 742139SN/A % (cond, isa.upper(), isa, basename)) 752139SN/A cond = '#elif' 762139SN/A f.write('#else\n#error "THE_ISA not set"\n#endif\n') 772139SN/A f.close() 782139SN/A return 0 792139SN/A 802139SN/A# String to print when generating header 812139SN/Adef gen_switch_hdr_string(target, source, env): 822139SN/A return "Generating ISA switch header " + str(target[0]) 832139SN/A 842139SN/A# Build SCons Action object. 'varlist' specifies env vars that this 852178SN/A# action depends on; when env['ALL_ISA_LIST'] changes these actions 862139SN/A# should get re-executed. 872139SN/Aswitch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string, 882139SN/A varlist=['ALL_ISA_LIST']) 892139SN/A 902139SN/A# Instantiate actions for each header 912139SN/Afor hdr in isa_switch_hdrs: 922139SN/A env.Command(hdr, [], switch_hdr_action) 932152SN/A 942152SN/A################################################################# 952152SN/A# 962152SN/A# Include architecture-specific files. 972152SN/A# 982152SN/A################################################################# 992152SN/A 1002152SN/A# 1012152SN/A# Build a SCons scanner for ISA files 1022152SN/A# 1032152SN/Aimport SCons.Scanner 1042152SN/A 1052504SN/Aisa_scanner = SCons.Scanner.Classic("ISAScan", 1062504SN/A [".isa", ".ISA"], 1072504SN/A "SRCDIR", 1082504SN/A r'^\s*##include\s+"([\w/.-]*)"') 1092152SN/A 1102504SN/Aenv.Append(SCANNERS = isa_scanner) 1112152SN/A 1122152SN/A# 1132152SN/A# Now create a Builder object that uses isa_parser.py to generate C++ 1142152SN/A# output from the ISA description (*.isa) files. 1152152SN/A# 1162152SN/A 1172152SN/A# Convert to File node to fix path 1182152SN/Aisa_parser = File('isa_parser.py') 1192632Sstever@eecs.umich.educpu_models_file = File('../cpu/cpu_models.py') 1202155SN/A 1212155SN/A# This sucks in the defintions of the CpuModel objects. 1222155SN/Aexecfile(cpu_models_file.srcnode().abspath) 1232155SN/A 1242155SN/A# Several files are generated from the ISA description. 1252155SN/A# We always get the basic decoder and header file. 1262155SN/Aisa_desc_gen_files = Split('decoder.cc decoder.hh') 1272155SN/A# We also get an execute file for each selected CPU model. 1282155SN/Aisa_desc_gen_files += [CpuModel.dict[cpu].filename 1292155SN/A for cpu in env['CPU_MODELS']] 1302152SN/A 1312152SN/A# The emitter patches up the sources & targets to include the 1322152SN/A# autogenerated files as targets and isa parser itself as a source. 1332152SN/Adef isa_desc_emitter(target, source, env): 1342155SN/A return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source) 1352152SN/A 1362152SN/A# Pieces are in place, so create the builder. 1372718Sstever@eecs.umich.edupython = sys.executable # use same Python binary used to run scons 1382718Sstever@eecs.umich.eduisa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS', 1392152SN/A emitter = isa_desc_emitter) 1402152SN/A 1412152SN/Aenv.Append(BUILDERS = { 'ISADesc' : isa_desc_builder }) 1422152SN/A 1432152SN/A# 1442152SN/A# Now include other ISA-specific sources from the ISA subdirectories. 1452152SN/A# 1462152SN/A 1472152SN/Aisa = env['TARGET_ISA'] # someday this may be a list of ISAs 1482152SN/A 1492152SN/A# Let the target architecture define what additional sources it needs 1502667Sstever@eecs.umich.edusources += SConscript(os.path.join(isa, 'SConscript'), exports = 'env') 1512152SN/A 1522152SN/AReturn('sources') 153