SConscript revision 4937 
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 sys
32
33Import('*')
34
35#################################################################
36#
37# ISA "switch header" generation.
38#
39# Auto-generate arch headers that include the right ISA-specific
40# header based on the setting of THE_ISA preprocessor variable.
41#
42#################################################################
43
44# List of headers to generate
45isa_switch_hdrs = Split('''
46        arguments.hh
47        faults.hh
48        interrupts.hh
49        isa_traits.hh
50        kernel_stats.hh
51        locked_mem.hh
52        mmaped_ipr.hh
53        process.hh
54        predecoder.hh
55        regfile.hh
56        remote_gdb.hh
57        stacktrace.hh
58        syscallreturn.hh
59        tlb.hh
60        types.hh
61        utility.hh
62        vtophys.hh
63        ''')
64
65# Set up this directory to support switching headers
66make_switching_dir('arch', isa_switch_hdrs, env)
67
68#################################################################
69#
70# Include architecture-specific files.
71#
72#################################################################
73
74#
75# Build a SCons scanner for ISA files
76#
77import SCons.Scanner
78
79isa_scanner = SCons.Scanner.Classic("ISAScan",
80                                    [".isa", ".ISA"],
81                                    "SRCDIR",
82                                    r'^\s*##include\s+"([\w/.-]*)"')
83
84env.Append(SCANNERS = isa_scanner)
85
86#
87# Now create a Builder object that uses isa_parser.py to generate C++
88# output from the ISA description (*.isa) files.
89#
90
91# Convert to File node to fix path
92isa_parser = File('isa_parser.py')
93cpu_models_file = File('../cpu/cpu_models.py')
94
95# This sucks in the defintions of the CpuModel objects.
96execfile(cpu_models_file.srcnode().abspath)
97
98# Several files are generated from the ISA description.
99# We always get the basic decoder and header file.
100isa_desc_gen_files = [ 'decoder.cc', 'decoder.hh' ]
101# We also get an execute file for each selected CPU model.
102isa_desc_gen_files += [CpuModel.dict[cpu].filename
103                       for cpu in env['CPU_MODELS']]
104
105# Also include the CheckerCPU as one of the models if it is being
106# enabled via command line.
107if env['USE_CHECKER']:
108    isa_desc_gen_files += [CpuModel.dict['CheckerCPU'].filename]
109
110# The emitter patches up the sources & targets to include the
111# autogenerated files as targets and isa parser itself as a source.
112def isa_desc_emitter(target, source, env):
113    return (isa_desc_gen_files, [isa_parser, cpu_models_file] + source)
114
115# Pieces are in place, so create the builder.
116python = sys.executable  # use same Python binary used to run scons
117
118# Also include the CheckerCPU as one of the models if it is being
119# enabled via command line.
120if env['USE_CHECKER']:
121    isa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS CheckerCPU',
122                               emitter = isa_desc_emitter)
123else:
124    isa_desc_builder = Builder(action=python + ' $SOURCES $TARGET.dir $CPU_MODELS',
125                               emitter = isa_desc_emitter)
126
127env.Append(BUILDERS = { 'ISADesc' : isa_desc_builder })
128