targets/toolchain_gcc.py
author Laurent Bessard
Wed, 15 May 2013 08:20:17 +0200
changeset 1143 59818c488ead
parent 1023 93022adef055
child 1315 ff14a66bbd12
permissions -rwxr-xr-x
Fixed bug in ST code generator when function output variable has no name
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import os, re, operator
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from util.ProcessLogger import ProcessLogger
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import hashlib
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includes_re =  re.compile('\s*#include\s*["<]([^">]*)[">].*')
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class toolchain_gcc():
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    """
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    This abstract class contains GCC specific code.
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    It cannot be used as this and should be inherited in a target specific
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    class such as target_linux or target_win32
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    """
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    def __init__(self, CTRInstance):
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        self.CTRInstance = CTRInstance
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        self.buildpath = None
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        self.SetBuildPath(self.CTRInstance._getBuildPath())
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    def getBuilderCFLAGS(self):
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        """
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        Returns list of builder specific CFLAGS
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        """
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        return [self.CTRInstance.GetTarget().getcontent()["value"].getCFLAGS()]
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    def getBuilderLDFLAGS(self):
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        """
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        Returns list of builder specific LDFLAGS
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        """
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        return self.CTRInstance.LDFLAGS + \
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               [self.CTRInstance.GetTarget().getcontent()["value"].getLDFLAGS()]
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    def GetBinaryCode(self):
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        try:
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            return open(self.exe_path, "rb").read()
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        except Exception, e:
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            return None
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    def _GetMD5FileName(self):
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        return os.path.join(self.buildpath, "lastbuildPLC.md5")
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    def ResetBinaryCodeMD5(self):
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        self.md5key = None
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        try:
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            os.remove(self._GetMD5FileName())
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        except Exception, e:
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            pass
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    def GetBinaryCodeMD5(self):
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        if self.md5key is not None:
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            return self.md5key
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        else:
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            try:
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                return open(self._GetMD5FileName(), "r").read()
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            except Exception, e:
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                return None
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    def SetBuildPath(self, buildpath):
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        if self.buildpath != buildpath:
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            self.buildpath = buildpath
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            self.exe = self.CTRInstance.GetProjectName() + self.extension
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            self.exe_path = os.path.join(self.buildpath, self.exe)
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            self.md5key = None
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            self.srcmd5 = {}
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    def check_and_update_hash_and_deps(self, bn):
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        # Get latest computed hash and deps
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        oldhash, deps = self.srcmd5.get(bn,(None,[]))
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        # read source
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        src = open(os.path.join(self.buildpath, bn)).read()
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        # compute new hash
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        newhash = hashlib.md5(src).hexdigest()
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        # compare
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        match = (oldhash == newhash)
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        if not match:
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            # file have changed
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            # update direct dependencies
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            deps = []
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            for l in src.splitlines():
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                res = includes_re.match(l)
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                if res is not None:
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                    depfn = res.groups()[0]
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                    if os.path.exists(os.path.join(self.buildpath, depfn)):
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                        #print bn + " depends on "+depfn
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                        deps.append(depfn)
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            # store that hashand deps
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            self.srcmd5[bn] = (newhash, deps)
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        # recurse through deps
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        # TODO detect cicular deps.
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        return reduce(operator.and_, map(self.check_and_update_hash_and_deps, deps), match)
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    def build(self):
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        # Retrieve toolchain user parameters
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        toolchain_params = self.CTRInstance.GetTarget().getcontent()["value"]
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        self.compiler = toolchain_params.getCompiler()
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        self.linker = toolchain_params.getLinker()
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        Builder_CFLAGS = ' '.join(self.getBuilderCFLAGS())
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        ######### GENERATE OBJECT FILES ########################################
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        obns = []
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        objs = []
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        relink = self.GetBinaryCode() is None
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        for Location, CFilesAndCFLAGS, DoCalls in self.CTRInstance.LocationCFilesAndCFLAGS:
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            if CFilesAndCFLAGS:
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                if Location :
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                    self.CTRInstance.logger.write(".".join(map(str,Location))+" :\n")
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                else:
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                    self.CTRInstance.logger.write(_("PLC :\n"))
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            for CFile, CFLAGS in CFilesAndCFLAGS:
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                if CFile.endswith(".c"):
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                    bn = os.path.basename(CFile)
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                    obn = os.path.splitext(bn)[0]+".o"
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                    objectfilename = os.path.splitext(CFile)[0]+".o"
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                    match = self.check_and_update_hash_and_deps(bn)
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                    if match:
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                        self.CTRInstance.logger.write("   [pass]  "+bn+" -> "+obn+"\n")
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                    else:
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                        relink = True
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                        self.CTRInstance.logger.write("   [CC]  "+bn+" -> "+obn+"\n")
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                        status, result, err_result = ProcessLogger(
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                               self.CTRInstance.logger,
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                               "\"%s\" -c \"%s\" -o \"%s\" %s %s"%
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                                   (self.compiler, CFile, objectfilename, Builder_CFLAGS, CFLAGS)
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                               ).spin()
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                        if status :
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                            self.srcmd5.pop(bn)
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                            self.CTRInstance.logger.write_error(_("C compilation of %s failed.\n")%bn)
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                            return False
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                    obns.append(obn)
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                    objs.append(objectfilename)
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                elif CFile.endswith(".o"):
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                    obns.append(os.path.basename(CFile))
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                    objs.append(CFile)
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        ######### GENERATE library FILE ########################################
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        # Link all the object files into one binary file
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        self.CTRInstance.logger.write(_("Linking :\n"))
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        if relink:
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            objstring = []
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            # Generate list .o files
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            listobjstring = '"' + '"  "'.join(objs) + '"'
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            ALLldflags = ' '.join(self.getBuilderLDFLAGS())
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            self.CTRInstance.logger.write("   [CC]  " + ' '.join(obns)+" -> " + self.exe + "\n")
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            status, result, err_result = ProcessLogger(
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                   self.CTRInstance.logger,
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                   "\"%s\" %s -o \"%s\" %s"%
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                       (self.linker,
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                        listobjstring,
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                        self.exe_path,
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                        ALLldflags)
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                   ).spin()
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            if status :
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                return False
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285
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        else:
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            self.CTRInstance.logger.write("   [pass]  " + ' '.join(obns)+" -> " + self.exe + "\n")
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        # Calculate md5 key and get data for the new created PLC
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        data=self.GetBinaryCode()
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        self.md5key = hashlib.md5(data).hexdigest()
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        # Store new PLC filename based on md5 key
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        f = open(self._GetMD5FileName(), "w")
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        f.write(self.md5key)
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        f.close()
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        return True
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