SConscript revision 6194 
1# -*- mode:python -*-
2
3# Copyright (c) 2004-2005 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: Nathan Binkert
30
31import array
32import bisect
33import imp
34import marshal
35import os
36import re
37import sys
38import zlib
39
40from os.path import basename, dirname, exists, isdir, isfile, join as joinpath
41
42import SCons
43
44# This file defines how to build a particular configuration of M5
45# based on variable settings in the 'env' build environment.
46
47Import('*')
48
49# Children need to see the environment
50Export('env')
51
52build_env = dict([(opt, env[opt]) for opt in export_vars])
53
54########################################################################
55# Code for adding source files of various types
56#
57class SourceMeta(type):
58    def __init__(cls, name, bases, dict):
59        super(SourceMeta, cls).__init__(name, bases, dict)
60        cls.all = []
61        
62    def get(cls, **kwargs):
63        for src in cls.all:
64            for attr,value in kwargs.iteritems():
65                if getattr(src, attr) != value:
66                    break
67            else:
68                yield src
69
70class SourceFile(object):
71    __metaclass__ = SourceMeta
72    def __init__(self, source):
73        tnode = source
74        if not isinstance(source, SCons.Node.FS.File):
75            tnode = File(source)
76
77        self.tnode = tnode
78        self.snode = tnode.srcnode()
79        self.filename = str(tnode)
80        self.dirname = dirname(self.filename)
81        self.basename = basename(self.filename)
82        index = self.basename.rfind('.')
83        if index <= 0:
84            # dot files aren't extensions
85            self.extname = self.basename, None
86        else:
87            self.extname = self.basename[:index], self.basename[index+1:]
88
89        for base in type(self).__mro__:
90            if issubclass(base, SourceFile):
91                bisect.insort_right(base.all, self)       
92
93    def __lt__(self, other): return self.filename < other.filename
94    def __le__(self, other): return self.filename <= other.filename
95    def __gt__(self, other): return self.filename > other.filename
96    def __ge__(self, other): return self.filename >= other.filename
97    def __eq__(self, other): return self.filename == other.filename
98    def __ne__(self, other): return self.filename != other.filename
99        
100class Source(SourceFile):
101    '''Add a c/c++ source file to the build'''
102    def __init__(self, source, Werror=True, swig=False, bin_only=False,
103                 skip_lib=False):
104        super(Source, self).__init__(source)
105
106        self.Werror = Werror
107        self.swig = swig
108        self.bin_only = bin_only
109        self.skip_lib = bin_only or skip_lib
110
111class PySource(SourceFile):
112    '''Add a python source file to the named package'''
113    invalid_sym_char = re.compile('[^A-z0-9_]')
114    modules = {}
115    tnodes = {}
116    symnames = {}
117    
118    def __init__(self, package, source):
119        super(PySource, self).__init__(source)
120
121        modname,ext = self.extname
122        assert ext == 'py'
123
124        if package:
125            path = package.split('.')
126        else:
127            path = []
128
129        modpath = path[:]
130        if modname != '__init__':
131            modpath += [ modname ]
132        modpath = '.'.join(modpath)
133
134        arcpath = path + [ self.basename ]
135        debugname = self.snode.abspath
136        if not exists(debugname):
137            debugname = self.tnode.abspath
138
139        self.package = package
140        self.modname = modname
141        self.modpath = modpath
142        self.arcname = joinpath(*arcpath)
143        self.debugname = debugname
144        self.compiled = File(self.filename + 'c')
145        self.assembly = File(self.filename + '.s')
146        self.symname = "PyEMB_" + PySource.invalid_sym_char.sub('_', modpath)
147
148        PySource.modules[modpath] = self
149        PySource.tnodes[self.tnode] = self
150        PySource.symnames[self.symname] = self
151
152class SimObject(PySource):
153    '''Add a SimObject python file as a python source object and add
154    it to a list of sim object modules'''
155
156    fixed = False
157    modnames = []
158
159    def __init__(self, source):
160        super(SimObject, self).__init__('m5.objects', source)
161        if self.fixed:
162            raise AttributeError, "Too late to call SimObject now."
163
164        bisect.insort_right(SimObject.modnames, self.modname)
165
166class SwigSource(SourceFile):
167    '''Add a swig file to build'''
168
169    def __init__(self, package, source):
170        super(SwigSource, self).__init__(source)
171
172        modname,ext = self.extname
173        assert ext == 'i'
174
175        self.module = modname
176        cc_file = joinpath(self.dirname, modname + '_wrap.cc')
177        py_file = joinpath(self.dirname, modname + '.py')
178
179        self.cc_source = Source(cc_file, swig=True)
180        self.py_source = PySource(package, py_file)
181
182unit_tests = []
183def UnitTest(target, sources):
184    if not isinstance(sources, (list, tuple)):
185        sources = [ sources ]
186
187    sources = [ Source(src, skip_lib=True) for src in sources ]
188    unit_tests.append((target, sources))
189
190# Children should have access
191Export('Source')
192Export('PySource')
193Export('SimObject')
194Export('SwigSource')
195Export('UnitTest')
196
197########################################################################
198#
199# Trace Flags
200#
201trace_flags = {}
202def TraceFlag(name, desc=None):
203    if name in trace_flags:
204        raise AttributeError, "Flag %s already specified" % name
205    trace_flags[name] = (name, (), desc)
206
207def CompoundFlag(name, flags, desc=None):
208    if name in trace_flags:
209        raise AttributeError, "Flag %s already specified" % name
210
211    compound = tuple(flags)
212    for flag in compound:
213        if flag not in trace_flags:
214            raise AttributeError, "Trace flag %s not found" % flag
215        if trace_flags[flag][1]:
216            raise AttributeError, \
217                "Compound flag can't point to another compound flag"
218
219    trace_flags[name] = (name, compound, desc)
220
221Export('TraceFlag')
222Export('CompoundFlag')
223
224########################################################################
225#
226# Set some compiler variables
227#
228
229# Include file paths are rooted in this directory.  SCons will
230# automatically expand '.' to refer to both the source directory and
231# the corresponding build directory to pick up generated include
232# files.
233env.Append(CPPPATH=Dir('.'))
234
235for extra_dir in extras_dir_list:
236    env.Append(CPPPATH=Dir(extra_dir))
237
238# Add a flag defining what THE_ISA should be for all compilation
239env.Append(CPPDEFINES=[('THE_ISA','%s_ISA' % env['TARGET_ISA'].upper())])
240
241# Workaround for bug in SCons version > 0.97d20071212
242# Scons bug id: 2006 M5 Bug id: 308 
243for root, dirs, files in os.walk(base_dir, topdown=True):
244    Dir(root[len(base_dir) + 1:])
245
246########################################################################
247#
248# Walk the tree and execute all SConscripts in subdirectories
249#
250
251here = Dir('.').srcnode().abspath
252for root, dirs, files in os.walk(base_dir, topdown=True):
253    if root == here:
254        # we don't want to recurse back into this SConscript
255        continue
256
257    if 'SConscript' in files:
258        build_dir = joinpath(env['BUILDDIR'], root[len(base_dir) + 1:])
259        SConscript(joinpath(root, 'SConscript'), build_dir=build_dir)
260
261for extra_dir in extras_dir_list:
262    prefix_len = len(dirname(extra_dir)) + 1
263    for root, dirs, files in os.walk(extra_dir, topdown=True):
264        if 'SConscript' in files:
265            build_dir = joinpath(env['BUILDDIR'], root[prefix_len:])
266            SConscript(joinpath(root, 'SConscript'), build_dir=build_dir)
267
268for opt in export_vars:
269    env.ConfigFile(opt)
270
271########################################################################
272#
273# Prevent any SimObjects from being added after this point, they
274# should all have been added in the SConscripts above
275#
276class DictImporter(object):
277    '''This importer takes a dictionary of arbitrary module names that
278    map to arbitrary filenames.'''
279    def __init__(self, modules):
280        self.modules = modules
281        self.installed = set()
282
283    def __del__(self):
284        self.unload()
285
286    def unload(self):
287        import sys
288        for module in self.installed:
289            del sys.modules[module]
290        self.installed = set()
291
292    def find_module(self, fullname, path):
293        if fullname == 'defines':
294            return self
295
296        if fullname == 'm5.objects':
297            return self
298
299        if fullname.startswith('m5.internal'):
300            return None
301
302        source = self.modules.get(fullname, None)
303        if source is not None and exists(source.snode.abspath):
304            return self
305
306        return None
307
308    def load_module(self, fullname):
309        mod = imp.new_module(fullname)
310        sys.modules[fullname] = mod
311        self.installed.add(fullname)
312
313        mod.__loader__ = self
314        if fullname == 'm5.objects':
315            mod.__path__ = fullname.split('.')
316            return mod
317
318        if fullname == 'defines':
319            mod.__dict__['buildEnv'] = build_env
320            return mod
321
322        source = self.modules[fullname]
323        if source.modname == '__init__':
324            mod.__path__ = source.modpath
325        mod.__file__ = source.snode.abspath
326
327        exec file(source.snode.abspath, 'r') in mod.__dict__
328
329        return mod
330
331# install the python importer so we can grab stuff from the source
332# tree itself.  We can't have SimObjects added after this point or
333# else we won't know about them for the rest of the stuff.
334SimObject.fixed = True
335importer = DictImporter(PySource.modules)
336sys.meta_path[0:0] = [ importer ]
337
338import m5
339
340# import all sim objects so we can populate the all_objects list
341# make sure that we're working with a list, then let's sort it
342for modname in SimObject.modnames:
343    exec('from m5.objects import %s' % modname)
344
345# we need to unload all of the currently imported modules so that they
346# will be re-imported the next time the sconscript is run
347importer.unload()
348sys.meta_path.remove(importer)
349
350sim_objects = m5.SimObject.allClasses
351all_enums = m5.params.allEnums
352
353all_params = {}
354for name,obj in sorted(sim_objects.iteritems()):
355    for param in obj._params.local.values():
356        if not hasattr(param, 'swig_decl'):
357            continue
358        pname = param.ptype_str
359        if pname not in all_params:
360            all_params[pname] = param
361
362########################################################################
363#
364# calculate extra dependencies
365#
366module_depends = ["m5", "m5.SimObject", "m5.params"]
367depends = [ PySource.modules[dep].tnode for dep in module_depends ]
368
369########################################################################
370#
371# Commands for the basic automatically generated python files
372#
373
374# Generate Python file containing a dict specifying the current
375# build_env flags.
376def makeDefinesPyFile(target, source, env):
377    f = file(str(target[0]), 'w')
378    build_env, hg_info = [ x.get_contents() for x in source ]
379    print >>f, "buildEnv = %s" % build_env
380    print >>f, "hgRev = '%s'" % hg_info
381    f.close()
382
383defines_info = [ Value(build_env), Value(env['HG_INFO']) ]
384# Generate a file with all of the compile options in it
385env.Command('python/m5/defines.py', defines_info, makeDefinesPyFile)
386PySource('m5', 'python/m5/defines.py')
387
388# Generate python file containing info about the M5 source code
389def makeInfoPyFile(target, source, env):
390    f = file(str(target[0]), 'w')
391    for src in source:
392        data = ''.join(file(src.srcnode().abspath, 'r').xreadlines())
393        print >>f, "%s = %s" % (src, repr(data))
394    f.close()
395
396# Generate a file that wraps the basic top level files
397env.Command('python/m5/info.py',
398            [ '#/AUTHORS', '#/LICENSE', '#/README', '#/RELEASE_NOTES' ],
399            makeInfoPyFile)
400PySource('m5', 'python/m5/info.py')
401
402# Generate the __init__.py file for m5.objects
403def makeObjectsInitFile(target, source, env):
404    f = file(str(target[0]), 'w')
405    print >>f, 'from params import *'
406    print >>f, 'from m5.SimObject import *'
407    for module in source:
408        print >>f, 'from %s import *' % module.get_contents()
409    f.close()
410
411# Generate an __init__.py file for the objects package
412env.Command('python/m5/objects/__init__.py',
413            map(Value, SimObject.modnames),
414            makeObjectsInitFile)
415PySource('m5.objects', 'python/m5/objects/__init__.py')
416
417########################################################################
418#
419# Create all of the SimObject param headers and enum headers
420#
421
422def createSimObjectParam(target, source, env):
423    assert len(target) == 1 and len(source) == 1
424
425    hh_file = file(target[0].abspath, 'w')
426    name = str(source[0].get_contents())
427    obj = sim_objects[name]
428
429    print >>hh_file, obj.cxx_decl()
430    hh_file.close()
431
432def createSwigParam(target, source, env):
433    assert len(target) == 1 and len(source) == 1
434
435    i_file = file(target[0].abspath, 'w')
436    name = str(source[0].get_contents())
437    param = all_params[name]
438
439    for line in param.swig_decl():
440        print >>i_file, line
441    i_file.close()
442
443def createEnumStrings(target, source, env):
444    assert len(target) == 1 and len(source) == 1
445
446    cc_file = file(target[0].abspath, 'w')
447    name = str(source[0].get_contents())
448    obj = all_enums[name]
449
450    print >>cc_file, obj.cxx_def()
451    cc_file.close()
452
453def createEnumParam(target, source, env):
454    assert len(target) == 1 and len(source) == 1
455
456    hh_file = file(target[0].abspath, 'w')
457    name = str(source[0].get_contents())
458    obj = all_enums[name]
459
460    print >>hh_file, obj.cxx_decl()
461    hh_file.close()
462
463# Generate all of the SimObject param struct header files
464params_hh_files = []
465for name,simobj in sorted(sim_objects.iteritems()):
466    py_source = PySource.modules[simobj.__module__]
467    extra_deps = [ py_source.tnode ]
468
469    hh_file = File('params/%s.hh' % name)
470    params_hh_files.append(hh_file)
471    env.Command(hh_file, Value(name), createSimObjectParam)
472    env.Depends(hh_file, depends + extra_deps)
473
474# Generate any parameter header files needed
475params_i_files = []
476for name,param in all_params.iteritems():
477    if isinstance(param, m5.params.VectorParamDesc):
478        ext = 'vptype'
479    else:
480        ext = 'ptype'
481
482    i_file = File('params/%s_%s.i' % (name, ext))
483    params_i_files.append(i_file)
484    env.Command(i_file, Value(name), createSwigParam)
485    env.Depends(i_file, depends)
486
487# Generate all enum header files
488for name,enum in sorted(all_enums.iteritems()):
489    py_source = PySource.modules[enum.__module__]
490    extra_deps = [ py_source.tnode ]
491
492    cc_file = File('enums/%s.cc' % name)
493    env.Command(cc_file, Value(name), createEnumStrings)
494    env.Depends(cc_file, depends + extra_deps)
495    Source(cc_file)
496
497    hh_file = File('enums/%s.hh' % name)
498    env.Command(hh_file, Value(name), createEnumParam)
499    env.Depends(hh_file, depends + extra_deps)
500
501# Build the big monolithic swigged params module (wraps all SimObject
502# param structs and enum structs)
503def buildParams(target, source, env):
504    names = [ s.get_contents() for s in source ]
505    objs = [ sim_objects[name] for name in names ]
506    out = file(target[0].abspath, 'w')
507
508    ordered_objs = []
509    obj_seen = set()
510    def order_obj(obj):
511        name = str(obj)
512        if name in obj_seen:
513            return
514
515        obj_seen.add(name)
516        if str(obj) != 'SimObject':
517            order_obj(obj.__bases__[0])
518
519        ordered_objs.append(obj)
520
521    for obj in objs:
522        order_obj(obj)
523
524    enums = set()
525    predecls = []
526    pd_seen = set()
527
528    def add_pds(*pds):
529        for pd in pds:
530            if pd not in pd_seen:
531                predecls.append(pd)
532                pd_seen.add(pd)
533
534    for obj in ordered_objs:
535        params = obj._params.local.values()
536        for param in params:
537            ptype = param.ptype
538            if issubclass(ptype, m5.params.Enum):
539                if ptype not in enums:
540                    enums.add(ptype)
541            pds = param.swig_predecls()
542            if isinstance(pds, (list, tuple)):
543                add_pds(*pds)
544            else:
545                add_pds(pds)
546
547    print >>out, '%module params'
548
549    print >>out, '%{'
550    for obj in ordered_objs:
551        print >>out, '#include "params/%s.hh"' % obj
552    print >>out, '%}'
553
554    for pd in predecls:
555        print >>out, pd
556
557    enums = list(enums)
558    enums.sort()
559    for enum in enums:
560        print >>out, '%%include "enums/%s.hh"' % enum.__name__
561    print >>out
562
563    for obj in ordered_objs:
564        if obj.swig_objdecls:
565            for decl in obj.swig_objdecls:
566                print >>out, decl
567            continue
568
569        class_path = obj.cxx_class.split('::')
570        classname = class_path[-1]
571        namespaces = class_path[:-1]
572        namespaces.reverse()
573
574        code = ''
575
576        if namespaces:
577            code += '// avoid name conflicts\n'
578            sep_string = '_COLONS_'
579            flat_name = sep_string.join(class_path)
580            code += '%%rename(%s) %s;\n' % (flat_name, classname)
581
582        code += '// stop swig from creating/wrapping default ctor/dtor\n'
583        code += '%%nodefault %s;\n' % classname
584        code += 'class %s ' % classname
585        if obj._base:
586            code += ': public %s' % obj._base.cxx_class
587        code += ' {};\n'
588
589        for ns in namespaces:
590            new_code = 'namespace %s {\n' % ns
591            new_code += code
592            new_code += '}\n'
593            code = new_code
594
595        print >>out, code
596
597    print >>out, '%%include "src/sim/sim_object_params.hh"' % obj
598    for obj in ordered_objs:
599        print >>out, '%%include "params/%s.hh"' % obj
600
601params_file = File('params/params.i')
602names = sorted(sim_objects.keys())
603env.Command(params_file, map(Value, names), buildParams)
604env.Depends(params_file, params_hh_files + params_i_files + depends)
605SwigSource('m5.objects', params_file)
606
607# Build all swig modules
608for swig in SwigSource.all:
609    env.Command([swig.cc_source.tnode, swig.py_source.tnode], swig.tnode,
610                '$SWIG $SWIGFLAGS -outdir ${TARGETS[1].dir} '
611                '-o ${TARGETS[0]} $SOURCES')
612    env.Depends(swig.py_source.tnode, swig.tnode)
613    env.Depends(swig.cc_source.tnode, swig.tnode)
614
615# Generate the main swig init file
616def makeSwigInit(target, source, env):
617    f = file(str(target[0]), 'w')
618    print >>f, 'extern "C" {'
619    for module in source:
620        print >>f, '    void init_%s();' % module.get_contents()
621    print >>f, '}'
622    print >>f, 'void initSwig() {'
623    for module in source:
624        print >>f, '    init_%s();' % module.get_contents()
625    print >>f, '}'
626    f.close()
627
628env.Command('python/swig/init.cc',
629            map(Value, sorted(s.module for s in SwigSource.all)),
630            makeSwigInit)
631Source('python/swig/init.cc')
632
633# Generate traceflags.py
634def traceFlagsPy(target, source, env):
635    assert(len(target) == 1)
636
637    f = file(str(target[0]), 'w')
638
639    allFlags = []
640    for s in source:
641        val = eval(s.get_contents())
642        allFlags.append(val)
643
644    allFlags.sort()
645
646    print >>f, 'basic = ['
647    for flag, compound, desc in allFlags:
648        if not compound:
649            print >>f, "    '%s'," % flag
650    print >>f, "    ]"
651    print >>f
652
653    print >>f, 'compound = ['
654    print >>f, "    'All',"
655    for flag, compound, desc in allFlags:
656        if compound:
657            print >>f, "    '%s'," % flag
658    print >>f, "    ]"
659    print >>f
660
661    print >>f, "all = frozenset(basic + compound)"
662    print >>f
663
664    print >>f, 'compoundMap = {'
665    all = tuple([flag for flag,compound,desc in allFlags if not compound])
666    print >>f, "    'All' : %s," % (all, )
667    for flag, compound, desc in allFlags:
668        if compound:
669            print >>f, "    '%s' : %s," % (flag, compound)
670    print >>f, "    }"
671    print >>f
672
673    print >>f, 'descriptions = {'
674    print >>f, "    'All' : 'All flags',"
675    for flag, compound, desc in allFlags:
676        print >>f, "    '%s' : '%s'," % (flag, desc)
677    print >>f, "    }"
678
679    f.close()
680
681def traceFlagsCC(target, source, env):
682    assert(len(target) == 1)
683
684    f = file(str(target[0]), 'w')
685
686    allFlags = []
687    for s in source:
688        val = eval(s.get_contents())
689        allFlags.append(val)
690
691    # file header
692    print >>f, '''
693/*
694 * DO NOT EDIT THIS FILE! Automatically generated
695 */
696
697#include "base/traceflags.hh"
698
699using namespace Trace;
700
701const char *Trace::flagStrings[] =
702{'''
703
704    # The string array is used by SimpleEnumParam to map the strings
705    # provided by the user to enum values.
706    for flag, compound, desc in allFlags:
707        if not compound:
708            print >>f, '    "%s",' % flag
709
710    print >>f, '    "All",'
711    for flag, compound, desc in allFlags:
712        if compound:
713            print >>f, '    "%s",' % flag
714
715    print >>f, '};'
716    print >>f
717    print >>f, 'const int Trace::numFlagStrings = %d;' % (len(allFlags) + 1)
718    print >>f
719
720    #
721    # Now define the individual compound flag arrays.  There is an array
722    # for each compound flag listing the component base flags.
723    #
724    all = tuple([flag for flag,compound,desc in allFlags if not compound])
725    print >>f, 'static const Flags AllMap[] = {'
726    for flag, compound, desc in allFlags:
727        if not compound:
728            print >>f, "    %s," % flag
729    print >>f, '};'
730    print >>f
731
732    for flag, compound, desc in allFlags:
733        if not compound:
734            continue
735        print >>f, 'static const Flags %sMap[] = {' % flag
736        for flag in compound:
737            print >>f, "    %s," % flag
738        print >>f, "    (Flags)-1"
739        print >>f, '};'
740        print >>f
741
742    #
743    # Finally the compoundFlags[] array maps the compound flags
744    # to their individual arrays/
745    #
746    print >>f, 'const Flags *Trace::compoundFlags[] ='
747    print >>f, '{'
748    print >>f, '    AllMap,'
749    for flag, compound, desc in allFlags:
750        if compound:
751            print >>f, '    %sMap,' % flag
752    # file trailer
753    print >>f, '};'
754
755    f.close()
756
757def traceFlagsHH(target, source, env):
758    assert(len(target) == 1)
759
760    f = file(str(target[0]), 'w')
761
762    allFlags = []
763    for s in source:
764        val = eval(s.get_contents())
765        allFlags.append(val)
766
767    # file header boilerplate
768    print >>f, '''
769/*
770 * DO NOT EDIT THIS FILE!
771 *
772 * Automatically generated from traceflags.py
773 */
774
775#ifndef __BASE_TRACE_FLAGS_HH__
776#define __BASE_TRACE_FLAGS_HH__
777
778namespace Trace {
779
780enum Flags {'''
781
782    # Generate the enum.  Base flags come first, then compound flags.
783    idx = 0
784    for flag, compound, desc in allFlags:
785        if not compound:
786            print >>f, '    %s = %d,' % (flag, idx)
787            idx += 1
788
789    numBaseFlags = idx
790    print >>f, '    NumFlags = %d,' % idx
791
792    # put a comment in here to separate base from compound flags
793    print >>f, '''
794// The remaining enum values are *not* valid indices for Trace::flags.
795// They are "compound" flags, which correspond to sets of base
796// flags, and are used by changeFlag.'''
797
798    print >>f, '    All = %d,' % idx
799    idx += 1
800    for flag, compound, desc in allFlags:
801        if compound:
802            print >>f, '    %s = %d,' % (flag, idx)
803            idx += 1
804
805    numCompoundFlags = idx - numBaseFlags
806    print >>f, '    NumCompoundFlags = %d' % numCompoundFlags
807
808    # trailer boilerplate
809    print >>f, '''\
810}; // enum Flags
811
812// Array of strings for SimpleEnumParam
813extern const char *flagStrings[];
814extern const int numFlagStrings;
815
816// Array of arraay pointers: for each compound flag, gives the list of
817// base flags to set.  Inidividual flag arrays are terminated by -1.
818extern const Flags *compoundFlags[];
819
820/* namespace Trace */ }
821
822#endif // __BASE_TRACE_FLAGS_HH__
823'''
824
825    f.close()
826
827flags = map(Value, trace_flags.values())
828env.Command('base/traceflags.py', flags, traceFlagsPy)
829PySource('m5', 'base/traceflags.py')
830
831env.Command('base/traceflags.hh', flags, traceFlagsHH)
832env.Command('base/traceflags.cc', flags, traceFlagsCC)
833Source('base/traceflags.cc')
834
835# embed python files.  All .py files that have been indicated by a
836# PySource() call in a SConscript need to be embedded into the M5
837# library.  To do that, we compile the file to byte code, marshal the
838# byte code, compress it, and then generate an assembly file that
839# inserts the result into the data section with symbols indicating the
840# beginning, and end (and with the size at the end)
841def objectifyPyFile(target, source, env):
842    '''Action function to compile a .py into a code object, marshal
843    it, compress it, and stick it into an asm file so the code appears
844    as just bytes with a label in the data section'''
845
846    src = file(str(source[0]), 'r').read()
847    dst = file(str(target[0]), 'w')
848
849    pysource = PySource.tnodes[source[0]]
850    compiled = compile(src, pysource.debugname, 'exec')
851    marshalled = marshal.dumps(compiled)
852    compressed = zlib.compress(marshalled)
853    data = compressed
854
855    # Some C/C++ compilers prepend an underscore to global symbol
856    # names, so if they're going to do that, we need to prepend that
857    # leading underscore to globals in the assembly file.
858    if env['LEADING_UNDERSCORE']:
859        sym = '_' + pysource.symname
860    else:
861        sym = pysource.symname
862
863    step = 16
864    print >>dst, ".data"
865    print >>dst, ".globl %s_beg" % sym
866    print >>dst, ".globl %s_end" % sym
867    print >>dst, "%s_beg:" % sym
868    for i in xrange(0, len(data), step):
869        x = array.array('B', data[i:i+step])
870        print >>dst, ".byte", ','.join([str(d) for d in x])
871    print >>dst, "%s_end:" % sym
872    print >>dst, ".long %d" % len(marshalled)
873
874for source in PySource.all:
875    env.Command(source.assembly, source.tnode, objectifyPyFile)
876    Source(source.assembly)
877
878# Generate init_python.cc which creates a bunch of EmbeddedPyModule
879# structs that describe the embedded python code.  One such struct
880# contains information about the importer that python uses to get at
881# the embedded files, and then there's a list of all of the rest that
882# the importer uses to load the rest on demand.
883def pythonInit(target, source, env):
884    dst = file(str(target[0]), 'w')
885
886    def dump_mod(sym, endchar=','):
887        pysource = PySource.symnames[sym]
888        print >>dst, '    { "%s",' % pysource.arcname
889        print >>dst, '      "%s",' % pysource.modpath
890        print >>dst, '       %s_beg, %s_end,' % (sym, sym)
891        print >>dst, '       %s_end - %s_beg,' % (sym, sym)
892        print >>dst, '       *(int *)%s_end }%s'  % (sym, endchar)
893    
894    print >>dst, '#include "sim/init.hh"'
895
896    for sym in source:
897        sym = sym.get_contents()
898        print >>dst, "extern const char %s_beg[], %s_end[];" % (sym, sym)
899
900    print >>dst, "const EmbeddedPyModule embeddedPyImporter = "
901    dump_mod("PyEMB_importer", endchar=';');
902    print >>dst
903
904    print >>dst, "const EmbeddedPyModule embeddedPyModules[] = {"
905    for i,sym in enumerate(source):
906        sym = sym.get_contents()
907        if sym == "PyEMB_importer":
908            # Skip the importer since we've already exported it
909            continue
910        dump_mod(sym)
911    print >>dst, "    { 0, 0, 0, 0, 0, 0 }"
912    print >>dst, "};"
913
914
915env.Command('sim/init_python.cc',
916            map(Value, (s.symname for s in PySource.all)),
917            pythonInit)
918Source('sim/init_python.cc')
919
920########################################################################
921#
922# Define binaries.  Each different build type (debug, opt, etc.) gets
923# a slightly different build environment.
924#
925
926# List of constructed environments to pass back to SConstruct
927envList = []
928
929date_source = Source('base/date.cc', skip_lib=True)
930
931# Function to create a new build environment as clone of current
932# environment 'env' with modified object suffix and optional stripped
933# binary.  Additional keyword arguments are appended to corresponding
934# build environment vars.
935def makeEnv(label, objsfx, strip = False, **kwargs):
936    # SCons doesn't know to append a library suffix when there is a '.' in the
937    # name.  Use '_' instead.
938    libname = 'm5_' + label
939    exename = 'm5.' + label
940
941    new_env = env.Clone(OBJSUFFIX=objsfx, SHOBJSUFFIX=objsfx + 's')
942    new_env.Label = label
943    new_env.Append(**kwargs)
944
945    swig_env = new_env.Clone()
946    swig_env.Append(CCFLAGS='-Werror')
947    if env['GCC']:
948        swig_env.Append(CCFLAGS='-Wno-uninitialized')
949        swig_env.Append(CCFLAGS='-Wno-sign-compare')
950        swig_env.Append(CCFLAGS='-Wno-parentheses')
951
952    werror_env = new_env.Clone()
953    werror_env.Append(CCFLAGS='-Werror')
954
955    def make_obj(source, static, extra_deps = None):
956        '''This function adds the specified source to the correct
957        build environment, and returns the corresponding SCons Object
958        nodes'''
959
960        if source.swig:
961            env = swig_env
962        elif source.Werror:
963            env = werror_env
964        else:
965            env = new_env
966
967        if static:
968            obj = env.StaticObject(source.tnode)
969        else:
970            obj = env.SharedObject(source.tnode)
971
972        if extra_deps:
973            env.Depends(obj, extra_deps)
974
975        return obj
976
977    static_objs = [ make_obj(s, True) for s in Source.get(skip_lib=False)]
978    shared_objs = [ make_obj(s, False) for s in Source.get(skip_lib=False)]
979
980    static_date = make_obj(date_source, static=True, extra_deps=static_objs)
981    static_objs.append(static_date)
982    
983    shared_date = make_obj(date_source, static=False, extra_deps=shared_objs)
984    shared_objs.append(static_date)
985
986    # First make a library of everything but main() so other programs can
987    # link against m5.
988    static_lib = new_env.StaticLibrary(libname, static_objs)
989    shared_lib = new_env.SharedLibrary(libname, shared_objs)
990
991    for target, sources in unit_tests:
992        objs = [ make_obj(s, static=True) for s in sources ]
993        new_env.Program("unittest/%s.%s" % (target, label), objs + static_objs)
994
995    # Now link a stub with main() and the static library.
996    bin_objs = [make_obj(s, True) for s in Source.get(bin_only=True) ]
997    progname = exename
998    if strip:
999        progname += '.unstripped'
1000
1001    targets = new_env.Program(progname, bin_objs + static_objs)
1002
1003    if strip:
1004        if sys.platform == 'sunos5':
1005            cmd = 'cp $SOURCE $TARGET; strip $TARGET'
1006        else:
1007            cmd = 'strip $SOURCE -o $TARGET'
1008        targets = new_env.Command(exename, progname, cmd)
1009            
1010    new_env.M5Binary = targets[0]
1011    envList.append(new_env)
1012
1013# Debug binary
1014ccflags = {}
1015if env['GCC']:
1016    if sys.platform == 'sunos5':
1017        ccflags['debug'] = '-gstabs+'
1018    else:
1019        ccflags['debug'] = '-ggdb3'
1020    ccflags['opt'] = '-g -O3'
1021    ccflags['fast'] = '-O3'
1022    ccflags['prof'] = '-O3 -g -pg'
1023elif env['SUNCC']:
1024    ccflags['debug'] = '-g0'
1025    ccflags['opt'] = '-g -O'
1026    ccflags['fast'] = '-fast'
1027    ccflags['prof'] = '-fast -g -pg'
1028elif env['ICC']:
1029    ccflags['debug'] = '-g -O0'
1030    ccflags['opt'] = '-g -O'
1031    ccflags['fast'] = '-fast'
1032    ccflags['prof'] = '-fast -g -pg'
1033else:
1034    print 'Unknown compiler, please fix compiler options'
1035    Exit(1)
1036
1037makeEnv('debug', '.do',
1038        CCFLAGS = Split(ccflags['debug']),
1039        CPPDEFINES = ['DEBUG', 'TRACING_ON=1'])
1040
1041# Optimized binary
1042makeEnv('opt', '.o',
1043        CCFLAGS = Split(ccflags['opt']),
1044        CPPDEFINES = ['TRACING_ON=1'])
1045
1046# "Fast" binary
1047makeEnv('fast', '.fo', strip = True,
1048        CCFLAGS = Split(ccflags['fast']),
1049        CPPDEFINES = ['NDEBUG', 'TRACING_ON=0'])
1050
1051# Profiled binary
1052makeEnv('prof', '.po',
1053        CCFLAGS = Split(ccflags['prof']),
1054        CPPDEFINES = ['NDEBUG', 'TRACING_ON=0'],
1055        LINKFLAGS = '-pg')
1056
1057Return('envList')
1058