SConscript revision 3170 
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
32import os.path
33
34# Import build environment variable from SConstruct.
35Import('env')
36
37#################################################################
38#
39# Generate StaticInst execute() method signatures.
40#
41# There must be one signature for each CPU model compiled in.
42# Since the set of compiled-in models is flexible, we generate a
43# header containing the appropriate set of signatures on the fly.
44#
45#################################################################
46
47# CPU model-specific data is contained in cpu_models.py
48# Convert to SCons File node to get path handling
49models_db = File('cpu_models.py')
50# slurp in contents of file
51execfile(models_db.srcnode().abspath)
52
53# Template for execute() signature.
54exec_sig_template = '''
55virtual Fault execute(%s *xc, Trace::InstRecord *traceData) const = 0;
56virtual Fault initiateAcc(%s *xc, Trace::InstRecord *traceData) const
57{ panic("initiateAcc not defined!"); };
58virtual Fault completeAcc(Packet *pkt, %s *xc,
59                          Trace::InstRecord *traceData) const
60{ panic("completeAcc not defined!"); };
61'''
62
63mem_ini_sig_template = '''
64virtual Fault initiateAcc(%s *xc, Trace::InstRecord *traceData) const { panic("Not defined!"); };
65'''
66
67mem_comp_sig_template = '''
68virtual Fault completeAcc(uint8_t *data, %s *xc, Trace::InstRecord *traceData) const { panic("Not defined!"); return NoFault; };
69'''
70
71# Generate a temporary CPU list, including the CheckerCPU if
72# it's enabled.  This isn't used for anything else other than StaticInst
73# headers.
74temp_cpu_list = env['CPU_MODELS'][:]
75
76if env['USE_CHECKER']:
77    temp_cpu_list.append('CheckerCPU')
78
79# Generate header.  
80def gen_cpu_exec_signatures(target, source, env):
81    f = open(str(target[0]), 'w')
82    print >> f, '''
83#ifndef __CPU_STATIC_INST_EXEC_SIGS_HH__
84#define __CPU_STATIC_INST_EXEC_SIGS_HH__
85'''
86    for cpu in temp_cpu_list:
87        xc_type = CpuModel.dict[cpu].strings['CPU_exec_context']
88        print >> f, exec_sig_template % (xc_type, xc_type, xc_type)
89    print >> f, '''
90#endif  // __CPU_STATIC_INST_EXEC_SIGS_HH__
91'''
92
93# Generate string that gets printed when header is rebuilt
94def gen_sigs_string(target, source, env):
95    return "Generating static_inst_exec_sigs.hh: " \
96           + ', '.join(temp_cpu_list)
97
98# Add command to generate header to environment.
99env.Command('static_inst_exec_sigs.hh', models_db,
100            Action(gen_cpu_exec_signatures, gen_sigs_string,
101                   varlist = temp_cpu_list))
102
103env.Depends('static_inst_exec_sigs.hh', Value(env['USE_CHECKER']))
104env.Depends('static_inst_exec_sigs.hh', Value(env['CPU_MODELS']))
105
106# List of suppported CPUs by the Checker.  Errors out if USE_CHECKER=True
107# and one of these are not being used.
108CheckerSupportedCPUList = ['O3CPU', 'OzoneCPU']
109
110#################################################################
111#
112# Include CPU-model-specific files based on set of models
113# specified in CPU_MODELS build option.
114#
115#################################################################
116
117# Keep a list of CPU models that support SMT
118env['SMT_CPU_MODELS'] = []
119
120sources = []
121
122need_simple_base = False
123if 'AtomicSimpleCPU' in env['CPU_MODELS']:
124    need_simple_base = True
125    sources += Split('simple/atomic.cc')
126
127if 'TimingSimpleCPU' in env['CPU_MODELS']:
128    need_simple_base = True
129    sources += Split('simple/timing.cc')
130
131if need_simple_base:
132    sources += Split('simple/base.cc')
133
134if 'FastCPU' in env['CPU_MODELS']:
135    sources += Split('fast/cpu.cc')
136
137need_bp_unit = False
138if 'O3CPU' in env['CPU_MODELS']:
139    need_bp_unit = True
140    sources += SConscript('o3/SConscript', exports = 'env')
141    sources += Split('''
142        o3/base_dyn_inst.cc
143        o3/bpred_unit.cc
144        o3/commit.cc
145        o3/decode.cc
146        o3/fetch.cc
147        o3/free_list.cc
148        o3/fu_pool.cc
149        o3/cpu.cc
150        o3/iew.cc
151        o3/inst_queue.cc
152        o3/lsq_unit.cc
153        o3/lsq.cc
154        o3/mem_dep_unit.cc
155        o3/rename.cc
156        o3/rename_map.cc
157        o3/rob.cc
158        o3/scoreboard.cc
159        o3/store_set.cc
160        ''')
161    if env['USE_CHECKER']:
162        sources += Split('o3/checker_builder.cc')
163    else:
164        env['SMT_CPU_MODELS'].append('O3CPU') # Checker doesn't support SMT right now
165
166if 'OzoneCPU' in env['CPU_MODELS']:
167    need_bp_unit = True
168    sources += Split('''
169        ozone/base_dyn_inst.cc
170        ozone/bpred_unit.cc
171        ozone/cpu.cc
172        ozone/cpu_builder.cc
173        ozone/dyn_inst.cc
174        ozone/front_end.cc
175        ozone/lw_back_end.cc
176        ozone/lw_lsq.cc
177        ozone/rename_table.cc
178        ''')
179    if env['USE_CHECKER']:
180        sources += Split('ozone/checker_builder.cc')
181
182if need_bp_unit:
183    sources += Split('''
184        o3/2bit_local_pred.cc
185        o3/btb.cc
186        o3/ras.cc
187        o3/tournament_pred.cc
188        ''')
189
190if env['USE_CHECKER']:
191    sources += Split('checker/cpu.cc')
192    checker_supports = False
193    for i in CheckerSupportedCPUList:
194        if i in env['CPU_MODELS']:
195            checker_supports = True
196    if not checker_supports:
197        print "Checker only supports CPU models",
198        for i in CheckerSupportedCPUList:
199            print i,
200        print ", please set USE_CHECKER=False or use one of those CPU models"              
201        Exit(1)
202
203
204# FullCPU sources are included from src/SConscript since they're not
205# below this point in the file hierarchy.
206
207# Convert file names to SCons File objects.  This takes care of the
208# path relative to the top of the directory tree.
209sources = [File(s) for s in sources]
210
211Return('sources')
212
213