SConscript revision 2874
112837Sgabeblack@google.com# -*- mode:python -*- 212837Sgabeblack@google.com 312837Sgabeblack@google.com# Copyright (c) 2006 The Regents of The University of Michigan 412837Sgabeblack@google.com# All rights reserved. 512837Sgabeblack@google.com# 612837Sgabeblack@google.com# Redistribution and use in source and binary forms, with or without 712837Sgabeblack@google.com# modification, are permitted provided that the following conditions are 812837Sgabeblack@google.com# met: redistributions of source code must retain the above copyright 912837Sgabeblack@google.com# notice, this list of conditions and the following disclaimer; 1012837Sgabeblack@google.com# redistributions in binary form must reproduce the above copyright 1112837Sgabeblack@google.com# notice, this list of conditions and the following disclaimer in the 1212837Sgabeblack@google.com# documentation and/or other materials provided with the distribution; 1312837Sgabeblack@google.com# neither the name of the copyright holders nor the names of its 1412837Sgabeblack@google.com# contributors may be used to endorse or promote products derived from 1512837Sgabeblack@google.com# this software without specific prior written permission. 1612837Sgabeblack@google.com# 1712837Sgabeblack@google.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1812837Sgabeblack@google.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1912837Sgabeblack@google.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2012837Sgabeblack@google.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2112837Sgabeblack@google.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2212837Sgabeblack@google.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2312837Sgabeblack@google.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2412837Sgabeblack@google.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2512837Sgabeblack@google.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2612837Sgabeblack@google.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2712837Sgabeblack@google.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2812837Sgabeblack@google.com# 2912837Sgabeblack@google.com# Authors: Steve Reinhardt 3012837Sgabeblack@google.com 3112837Sgabeblack@google.comimport os.path, sys 3212837Sgabeblack@google.com 3312860Sgabeblack@google.com# Import build environment variable from SConstruct. 3412860Sgabeblack@google.comImport('env') 3512860Sgabeblack@google.com 3612837Sgabeblack@google.com# Right now there are no source files immediately in this directory 3712837Sgabeblack@google.comsources = [] 3812837Sgabeblack@google.com 3912837Sgabeblack@google.com################################################################# 4012837Sgabeblack@google.com# 4112837Sgabeblack@google.com# ISA "switch header" generation. 4212837Sgabeblack@google.com# 4312837Sgabeblack@google.com# Auto-generate arch headers that include the right ISA-specific 4412837Sgabeblack@google.com# header based on the setting of THE_ISA preprocessor variable. 4512860Sgabeblack@google.com# 4612860Sgabeblack@google.com################################################################# 4712860Sgabeblack@google.com 4812860Sgabeblack@google.com# List of headers to generate 4912860Sgabeblack@google.comisa_switch_hdrs = Split(''' 5012860Sgabeblack@google.com arguments.hh 5112860Sgabeblack@google.com constants.hh 5212860Sgabeblack@google.com faults.hh 5312860Sgabeblack@google.com isa_traits.hh 5412860Sgabeblack@google.com process.hh 5512860Sgabeblack@google.com regfile.hh 5612860Sgabeblack@google.com stacktrace.hh 5712860Sgabeblack@google.com tlb.hh 5812860Sgabeblack@google.com types.hh 5912860Sgabeblack@google.com utility.hh 6012860Sgabeblack@google.com vtophys.hh 6112860Sgabeblack@google.com ''') 6212860Sgabeblack@google.com 6312860Sgabeblack@google.com# Generate the header. target[0] is the full path of the output 6412860Sgabeblack@google.com# header to generate. 'source' is a dummy variable, since we get the 6512860Sgabeblack@google.com# list of ISAs from env['ALL_ISA_LIST']. 6612860Sgabeblack@google.comdef gen_switch_hdr(target, source, env): 6712860Sgabeblack@google.com fname = str(target[0]) 6812860Sgabeblack@google.com basename = os.path.basename(fname) 6912860Sgabeblack@google.com f = open(fname, 'w') 7012860Sgabeblack@google.com f.write('#include "arch/isa_specific.hh"\n') 7112860Sgabeblack@google.com cond = '#if' 7212860Sgabeblack@google.com for isa in env['ALL_ISA_LIST']: 7312860Sgabeblack@google.com f.write('%s THE_ISA == %s_ISA\n#include "arch/%s/%s"\n' 7412860Sgabeblack@google.com % (cond, isa.upper(), isa, basename)) 7512860Sgabeblack@google.com cond = '#elif' 7612860Sgabeblack@google.com f.write('#else\n#error "THE_ISA not set"\n#endif\n') 7712860Sgabeblack@google.com f.close() 7812860Sgabeblack@google.com return 0 7912860Sgabeblack@google.com 8012860Sgabeblack@google.com# String to print when generating header 8112860Sgabeblack@google.comdef gen_switch_hdr_string(target, source, env): 8212860Sgabeblack@google.com return "Generating ISA switch header " + str(target[0]) 8312860Sgabeblack@google.com 8412860Sgabeblack@google.com# Build SCons Action object. 'varlist' specifies env vars that this 8512860Sgabeblack@google.com# action depends on; when env['ALL_ISA_LIST'] changes these actions 8612860Sgabeblack@google.com# should get re-executed. 8712860Sgabeblack@google.comswitch_hdr_action = Action(gen_switch_hdr, gen_switch_hdr_string, 8812860Sgabeblack@google.com varlist=['ALL_ISA_LIST']) 8912860Sgabeblack@google.com 9012860Sgabeblack@google.com# Instantiate actions for each header 9112860Sgabeblack@google.comfor hdr in isa_switch_hdrs: 9212860Sgabeblack@google.com env.Command(hdr, [], switch_hdr_action) 9312860Sgabeblack@google.com 9412837Sgabeblack@google.com################################################################# 9512837Sgabeblack@google.com# 9612837Sgabeblack@google.com# Include architecture-specific files. 97# 98################################################################# 99 100# 101# Build a SCons scanner for ISA files 102# 103import SCons.Scanner 104 105isa_scanner = SCons.Scanner.Classic("ISAScan", 106 [".isa", ".ISA"], 107 "SRCDIR", 108 r'^\s*##include\s+"([\w/.-]*)"') 109 110env.Append(SCANNERS = isa_scanner) 111 112# 113# Now create a Builder object that uses isa_parser.py to generate C++ 114# output from the ISA description (*.isa) files. 115# 116 117# Convert to File node to fix path 118isa_parser = File('isa_parser.py') 119cpu_models_file = File('../cpu/cpu_models.py') 120 121# This sucks in the defintions of the CpuModel objects. 122execfile(cpu_models_file.srcnode().abspath) 123 124# Several files are generated from the ISA description. 125# We always get the basic decoder and header file. 126isa_desc_gen_files = Split('decoder.cc decoder.hh') 127# We also get an execute file for each selected CPU model. 128isa_desc_gen_files += [CpuModel.dict[cpu].filename 129 for cpu in env['CPU_MODELS']] 130 131# Also include the CheckerCPU as one of the models if it is being 132# enabled via command line. 133if env['USE_CHECKER']: 134 isa_desc_gen_files += [CpuModel.dict['CheckerCPU'].filename] 135 136# The emitter patches up the sources & targets to include the 137# autogenerated files as targets and isa parser itself as a source. 138def isa_desc_emitter(target, source, env): 139 return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source) 140 141# Pieces are in place, so create the builder. 142python = sys.executable # use same Python binary used to run scons 143isa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS', 144 emitter = isa_desc_emitter) 145 146env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder }) 147 148# 149# Now include other ISA-specific sources from the ISA subdirectories. 150# 151 152isa = env['TARGET_ISA'] # someday this may be a list of ISAs 153 154# Let the target architecture define what additional sources it needs 155sources += SConscript(os.path.join(isa, 'SConscript'), exports = 'env') 156 157Return('sources') 158