SConscript revision 3546
1# -*- mode:python -*- 2 3# Copyright (c) 2006 The Regents of The University of Michigan 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions are 8# met: redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer; 10# redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution; 13# neither the name of the copyright holders nor the names of its 14# contributors may be used to endorse or promote products derived from 15# this software without specific prior written permission. 16# 17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28# 29# Authors: Steve Reinhardt 30 31import os.path, sys 32 33# Import build environment variable from SConstruct. 34Import('env') 35 36# Right now there are no source files immediately in this directory 37sources = [] 38 39################################################################# 40# 41# ISA "switch header" generation. 42# 43# Auto-generate arch headers that include the right ISA-specific 44# header based on the setting of THE_ISA preprocessor variable. 45# 46################################################################# 47 48# List of headers to generate 49isa_switch_hdrs = Split(''' 50 arguments.hh 51 faults.hh 52 interrupts.hh 53 isa_traits.hh 54 locked_mem.hh 55 process.hh 56 regfile.hh 57 remote_gdb.hh 58 stacktrace.hh 59 syscallreturn.hh 60 tlb.hh 61 types.hh 62 utility.hh 63 vtophys.hh 64 ''') 65 66# Set up this directory to support switching headers 67env.make_switching_dir('arch', isa_switch_hdrs, env) 68 69################################################################# 70# 71# Include architecture-specific files. 72# 73################################################################# 74 75# 76# Build a SCons scanner for ISA files 77# 78import SCons.Scanner 79 80isa_scanner = SCons.Scanner.Classic("ISAScan", 81 [".isa", ".ISA"], 82 "SRCDIR", 83 r'^\s*##include\s+"([\w/.-]*)"') 84 85env.Append(SCANNERS = isa_scanner) 86 87# 88# Now create a Builder object that uses isa_parser.py to generate C++ 89# output from the ISA description (*.isa) files. 90# 91 92# Convert to File node to fix path 93isa_parser = File('isa_parser.py') 94cpu_models_file = File('../cpu/cpu_models.py') 95 96# This sucks in the defintions of the CpuModel objects. 97execfile(cpu_models_file.srcnode().abspath) 98 99# Several files are generated from the ISA description. 100# We always get the basic decoder and header file. 101isa_desc_gen_files = Split('decoder.cc decoder.hh') 102# We also get an execute file for each selected CPU model. 103isa_desc_gen_files += [CpuModel.dict[cpu].filename 104 for cpu in env['CPU_MODELS']] 105 106# Also include the CheckerCPU as one of the models if it is being 107# enabled via command line. 108if env['USE_CHECKER']: 109 isa_desc_gen_files += [CpuModel.dict['CheckerCPU'].filename] 110 111# The emitter patches up the sources & targets to include the 112# autogenerated files as targets and isa parser itself as a source. 113def isa_desc_emitter(target, source, env): 114 return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source) 115 116# Pieces are in place, so create the builder. 117python = sys.executable # use same Python binary used to run scons 118 119# Also include the CheckerCPU as one of the models if it is being 120# enabled via command line. 121if env['USE_CHECKER']: 122 isa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS CheckerCPU', 123 emitter = isa_desc_emitter) 124else: 125 isa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS', 126 emitter = isa_desc_emitter) 127 128env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder }) 129 130# 131# Now include other ISA-specific sources from the ISA subdirectories. 132# 133 134isa = env['TARGET_ISA'] # someday this may be a list of ISAs 135 136# Let the target architecture define what additional sources it needs 137sources += SConscript(os.path.join(isa, 'SConscript'), exports = 'env') 138 139Return('sources') 140