SConscript revision 2171
14202Sbinkertn@umich.edu# -*- mode:python -*- 24202Sbinkertn@umich.edu 34202Sbinkertn@umich.edu# Copyright (c) 2006 The Regents of The University of Michigan 44202Sbinkertn@umich.edu# All rights reserved. 54202Sbinkertn@umich.edu# 64202Sbinkertn@umich.edu# Redistribution and use in source and binary forms, with or without 74202Sbinkertn@umich.edu# modification, are permitted provided that the following conditions are 84202Sbinkertn@umich.edu# met: redistributions of source code must retain the above copyright 94202Sbinkertn@umich.edu# notice, this list of conditions and the following disclaimer; 104202Sbinkertn@umich.edu# redistributions in binary form must reproduce the above copyright 114202Sbinkertn@umich.edu# notice, this list of conditions and the following disclaimer in the 124202Sbinkertn@umich.edu# documentation and/or other materials provided with the distribution; 134202Sbinkertn@umich.edu# neither the name of the copyright holders nor the names of its 144202Sbinkertn@umich.edu# contributors may be used to endorse or promote products derived from 154202Sbinkertn@umich.edu# this software without specific prior written permission. 164202Sbinkertn@umich.edu# 174202Sbinkertn@umich.edu# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 184202Sbinkertn@umich.edu# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 194202Sbinkertn@umich.edu# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 204202Sbinkertn@umich.edu# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 214202Sbinkertn@umich.edu# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 224202Sbinkertn@umich.edu# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 234202Sbinkertn@umich.edu# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 244202Sbinkertn@umich.edu# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 254202Sbinkertn@umich.edu# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 264202Sbinkertn@umich.edu# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 274202Sbinkertn@umich.edu# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 284202Sbinkertn@umich.edu 294202Sbinkertn@umich.eduimport os.path 304202Sbinkertn@umich.edu 314202Sbinkertn@umich.edu# Import build environment variable from SConstruct. 324202Sbinkertn@umich.eduImport('env') 334295Sbinkertn@umich.edu 344295Sbinkertn@umich.edu# Right now there are no source files immediately in this directory 354295Sbinkertn@umich.edusources = [] 364295Sbinkertn@umich.edu 374295Sbinkertn@umich.edu################################################################# 384295Sbinkertn@umich.edu# 394295Sbinkertn@umich.edu# ISA "switch header" generation. 404295Sbinkertn@umich.edu# 414295Sbinkertn@umich.edu# Auto-generate arch headers that include the right ISA-specific 424295Sbinkertn@umich.edu# header based on the setting of THE_ISA preprocessor variable. 434295Sbinkertn@umich.edu# 444295Sbinkertn@umich.edu################################################################# 454295Sbinkertn@umich.edu 464295Sbinkertn@umich.edu# List of headers to generate 474295Sbinkertn@umich.eduisa_switch_hdrs = Split(''' 484295Sbinkertn@umich.edu isa_traits.hh 494295Sbinkertn@umich.edu linux_process.hh 504295Sbinkertn@umich.edu tru64_process.hh 514295Sbinkertn@umich.edu tlb.hh 524295Sbinkertn@umich.edu aout_machdep.h 534202Sbinkertn@umich.edu ecoff_machdep.h 544202Sbinkertn@umich.edu arguments.hh 554202Sbinkertn@umich.edu stacktrace.hh 564202Sbinkertn@umich.edu vtophys.hh 574202Sbinkertn@umich.edu faults.hh 584202Sbinkertn@umich.edu ev5.hh 594202Sbinkertn@umich.edu ''') 604550Sbinkertn@umich.edu 614550Sbinkertn@umich.edu# Generate the header. target[0] is the full path of the output 624202Sbinkertn@umich.edu# header to generate. 'source' is a dummy variable, since we get the 634202Sbinkertn@umich.edu# list of ISAs from env['ALL_ISA_LIST']. 644202Sbinkertn@umich.edudef gen_switch_hdr(target, source, env): 654202Sbinkertn@umich.edu fname = str(target[0]) 664202Sbinkertn@umich.edu basename = os.path.basename(fname) 674202Sbinkertn@umich.edu f = open(fname, 'w') 684202Sbinkertn@umich.edu f.write('#include "arch/isa_specific.hh"\n') 694202Sbinkertn@umich.edu cond = '#if' 704202Sbinkertn@umich.edu for isa in env['ALL_ISA_LIST']: 714202Sbinkertn@umich.edu f.write('%s THE_ISA == %s_ISA\n#include "arch/%s/%s"\n' 724202Sbinkertn@umich.edu % (cond, isa.upper(), isa, basename)) 734202Sbinkertn@umich.edu cond = '#elif' 744202Sbinkertn@umich.edu f.write('#else\n#error "THE_ISA not set"\n#endif\n') 754202Sbinkertn@umich.edu f.close() 764202Sbinkertn@umich.edu return 0 774202Sbinkertn@umich.edu 784202Sbinkertn@umich.edu# String to print when generating header 794202Sbinkertn@umich.edudef gen_switch_hdr_string(target, source, env): 804202Sbinkertn@umich.edu return "Generating ISA switch header " + str(target[0]) 814202Sbinkertn@umich.edu 824202Sbinkertn@umich.edu# Build SCons Action object. 'varlist' specifies env vars that this 834202Sbinkertn@umich.edu# action depdnds on; when env['ALL_ISA_LIST'] changes these actions 844202Sbinkertn@umich.edu# should get re-executed. 854202Sbinkertn@umich.eduswitch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string, 864202Sbinkertn@umich.edu varlist=['ALL_ISA_LIST']) 874202Sbinkertn@umich.edu 884202Sbinkertn@umich.edu# Instantiate actions for each header 894202Sbinkertn@umich.edufor hdr in isa_switch_hdrs: 904202Sbinkertn@umich.edu env.Command(hdr, [], switch_hdr_action) 914202Sbinkertn@umich.edu 924202Sbinkertn@umich.edu################################################################# 934202Sbinkertn@umich.edu# 944202Sbinkertn@umich.edu# Include architecture-specific files. 954202Sbinkertn@umich.edu# 964202Sbinkertn@umich.edu################################################################# 974202Sbinkertn@umich.edu 984202Sbinkertn@umich.edu# 994202Sbinkertn@umich.edu# Build a SCons scanner for ISA files 1004202Sbinkertn@umich.edu# 1014202Sbinkertn@umich.eduimport SCons.Scanner 1024382Sbinkertn@umich.edu 1034382Sbinkertn@umich.edudef ISAScan(): 104 return SCons.Scanner.Classic("ISAScan", 105 "$ISASUFFIXES", 106 "SRCDIR", 107 '^[ \t]*##[ \t]*include[ \t]*"([^>"]+)"') 108 109def ISAPath(env, dir, target=None, source=None, a=None): 110 return (Dir(env['SRCDIR']), Dir('.')) 111 112iscan = Scanner(function = ISAScan().scan, skeys = [".isa", ".ISA"], 113 path_function = ISAPath) 114env.Append(SCANNERS = iscan) 115 116# 117# Now create a Builder object that uses isa_parser.py to generate C++ 118# output from the ISA description (*.isa) files. 119# 120 121# Convert to File node to fix path 122isa_parser = File('isa_parser.py') 123cpu_models_file = File('#m5/cpu/cpu_models.py') 124 125# This sucks in the defintions of the CpuModel objects. 126execfile(cpu_models_file.srcnode().abspath) 127 128# Several files are generated from the ISA description. 129# We always get the basic decoder and header file. 130isa_desc_gen_files = Split('decoder.cc decoder.hh') 131# We also get an execute file for each selected CPU model. 132isa_desc_gen_files += [CpuModel.dict[cpu].filename 133 for cpu in env['CPU_MODELS']] 134 135# The emitter patches up the sources & targets to include the 136# autogenerated files as targets and isa parser itself as a source. 137def isa_desc_emitter(target, source, env): 138 return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source) 139 140# Pieces are in place, so create the builder. 141isa_desc_builder = Builder(action='$SOURCES $TARGET.dir $CPU_MODELS', 142 source_scanner = iscan, 143 emitter = isa_desc_emitter) 144 145env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder }) 146 147# 148# Now include other ISA-specific sources from the ISA subdirectories. 149# 150 151isa = env['TARGET_ISA'] # someday this may be a list of ISAs 152 153# Let the target architecture define what additional sources it needs 154sources += SConscript(os.path.join(isa, 'SConscript'), 155 exports = 'env', duplicate = False) 156 157Return('sources') 158