Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

simulators/gem5/util/statetrace/base/arch_check.h

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2006-2007 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#if defined __STATETRACE_ALPHA__
+    #if !defined __alpha__
+        #error "Alpha toolchain required."
+    #endif
+#elif defined __STATETRACE_AMD64__
+    #if !defined __amd64__
+        #error "Amd64 toolchain required."
+    #endif
+#elif defined __STATETRACE_ARM__
+    #if !defined __arm__
+        #error "Arm toolchain required."
+    #endif
+#elif defined __STATETRACE_HPPA__
+    #if !defined __hppa__
+        #error "Hppa toolchain required."
+    #endif
+#elif defined __STATETRACE_I686__
+    #if !(defined __i386__ || defined __i486__ || \
+            defined __i586__ || defined __i686__)
+        #error "I686 toolchain required."
+    #endif
+#elif defined __STATETRACE_IA64__
+    #if !defined __ia64__
+        #error "IA64 toolchain required."
+    #endif
+#elif defined __STATETRACE_MIPS__
+    #if !defined __mips__
+        #error "Mips toolchain required."
+    #endif
+#elif defined __STATETRACE_POWERPC__
+    #if !defined __powerpc__
+        #error "PowerPC toolchain required."
+    #endif
+#elif defined __STATETRACE_SPARC__
+    #if !defined __sparc__
+        #error "Sparc toolchain required."
+    #endif
+#elif defined __STATETRACE_SH__
+    #if !defined __sh__
+        #error "SuperH toolchain required."
+    #endif
+#elif defined __STATETRACE__S390__
+    #if !defined __s390__
+        #error "System/390 toolchain required."
+    #endif
+#else
+    #error "Couldn't determine architecture."
+#endif

simulators/gem5/util/statetrace/base/regstate.hh

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2006 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef REGSTATE_H
+#define REGSTATE_H
+
+#include <stdint.h>
+
+#include <string>
+
+class RegState
+{
+  protected:
+    virtual bool update(int pid) = 0;
+  public:
+    virtual int64_t getRegVal(int num) = 0;
+    virtual int64_t getOldRegVal(int num) = 0;
+};
+
+#endif

simulators/gem5/util/statetrace/base/statetrace.cc

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2006-2007 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#include <netinet/in.h>
+#include <sys/ptrace.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <netdb.h>
+#include <unistd.h>
+
+#include <cerrno>
+#include <cstdio>
+#include <cstring>
+#include <fstream>
+#include <iostream>
+#include <string>
+
+#include "base/arch_check.h"
+#include "tracechild.hh"
+
+using namespace std;
+
+void
+printUsage(const char * execName)
+{
+    cout << execName << " <options> -- <command> <arguments>" << endl;
+    cout << "options:" << endl;
+    cout << "         -h          print this help" << endl;
+    cout << "         --host      remote m5 host to connect to" << endl;
+    cout << "         -i          print initial stack state" << endl;
+    cout << "         -nt         don't trace execution" << endl;
+}
+
+int
+main(int argc, char * argv[], char * envp[])
+{
+    TraceChild * child = genTraceChild();
+    string args;
+    int startProgramArgs;
+
+    //Parse the command line arguments
+    bool printInitial = false;
+    bool printTrace = true;
+    string host = "localhost";
+
+    if (argc == 1) {
+        printUsage(argv[0]);
+        return 0;
+    }
+    for (int x = 1; x < argc; x++) {
+        if (!strcmp(argv[x], "-h")) {
+            printUsage(argv[0]);
+            return 0;
+        }
+        if (!strcmp(argv[x], "--host")) {
+            x++;
+            if (x >= argc) {
+                cerr << "Incorrect usage.\n" << endl;
+                printUsage(argv[0]);
+                return 1;
+            }
+            host = argv[x];
+        } else if (!strcmp(argv[x], "-i")) {
+            printInitial = true;
+        } else if (!strcmp(argv[x], "-nt")) {
+            printTrace = false;
+        } else if (!strcmp(argv[x], "--")) {
+            x++;
+            if (x >= argc) {
+                cerr << "Incorrect usage.\n" << endl;
+                printUsage(argv[0]);
+                return 1;
+            }
+            startProgramArgs = x;
+            break;
+        } else {
+            cerr << "Incorrect usage.\n" << endl;
+            printUsage(argv[0]);
+            return 1;
+        }
+    }
+    if (!child->startTracing(argv[startProgramArgs],
+                argv + startProgramArgs)) {
+        cerr << "Couldn't start target program" << endl;
+        return 1;
+    }
+    child->step();
+    if (printInitial)
+        child->outputStartState(cout);
+    if (printTrace) {
+        // Connect to m5
+        bool portSet = false;
+        int port;
+        int sock = socket(AF_INET, SOCK_STREAM, 0);
+        if (sock < 0) {
+            cerr << "Error opening socket! " << strerror(errno) << endl;
+            return 1;
+        }
+        struct hostent *server;
+        server = gethostbyname(host.c_str());
+        if (!server) {
+            cerr << "Couldn't get host ip! " << strerror(errno) << endl;
+            return 1;
+        }
+        struct sockaddr_in serv_addr;
+        bzero((char *)&serv_addr, sizeof(serv_addr));
+        serv_addr.sin_family = AF_INET;
+        bcopy((char *)server->h_addr,
+                (char *)&serv_addr.sin_addr.s_addr,
+                server->h_length);
+        serv_addr.sin_port = htons(8000);
+        if (connect(sock, (sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
+            cerr << "Couldn't connect to server! " << strerror(errno) << endl;
+            return 1;
+        }
+        while (child->isTracing()) {
+            if (!child->sendState(sock))
+                break;
+            child->step();
+        }
+    }
+    if (!child->stopTracing()) {
+        cerr << "Couldn't stop child" << endl;
+        return 1;
+    }
+    return 0;
+}
+

simulators/gem5/util/statetrace/base/tracechild.cc

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2006-2007 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#include <sys/ptrace.h>
+#include <sys/wait.h>
+
+#include <cerrno>
+#include <cstring>
+#include <iostream>
+
+#include "tracechild.hh"
+
+using namespace std;
+
+bool
+TraceChild::startTracing(const char * pathToFile, char * const argv[])
+{
+    instructions = 0;
+    pid = fork();
+    if (pid == -1) {
+        cout << "fork failed" << endl;
+        return false;
+    } else if (pid == 0) {
+        //We're the child. Get things ready and then exec the program to trace.
+        //Let our parent trace us
+        if (ptrace(PTRACE_TRACEME, 0, 0, 0) == -1) {
+            cout << "Failure calling TRACEME\n" << strerror(errno) << endl;
+            return false;
+        }
+
+        //Set up an empty environment for the child... We would want to
+        //specify this somehow at some point
+        char * env[] = {NULL};
+
+        //Start the program to trace
+        execve(pathToFile, argv, env);
+
+        //We should never get here, so this is an error!
+        cout << "Exec failed\n" <<  strerror(errno) << endl;
+        return false;
+    }
+
+    //From this point forward, we know we're in the parent process.
+    if (!doWait()) {
+        cout << "Didn't wait successfully" << endl;
+        return false;
+    }
+    tracing = true;
+    return true;
+}
+
+bool
+TraceChild::stopTracing()
+{
+    if (ptrace(PTRACE_KILL, pid, 0, 0) != 0)
+        return false;
+    tracing = false;
+    return true;
+}
+
+bool
+TraceChild::step()
+{
+    ptraceSingleStep();
+}
+
+bool
+TraceChild::ptraceSingleStep()
+{
+    if (!tracing) {
+        cout << "Not tracing!" << endl;
+        return false;
+    }
+    if (ptrace(PTRACE_SINGLESTEP, pid, 0, 0) != 0) {
+        switch (errno) {
+          case EBUSY: cout << "EBUSY" << endl; break;
+          case EFAULT: cout << "EFAULT" << endl; break;
+          case EIO: cout << "EIO" << endl; break;
+          case EPERM: cout << "EPERM" << endl; break;
+          case ESRCH: cout << "ESRCH" << endl; break;
+          default: cout << "Unknown error" << endl; break;
+        }
+        cout << "Not able to single step!" << endl;
+        tracing == false;
+        return false;
+    }
+    doWait();
+    update(pid);
+}
+
+bool
+TraceChild::doWait()
+{
+    int wait_val;
+    wait(&wait_val);
+    if (WIFEXITED(wait_val)) {
+        cerr << "Program exited! Exit status is "
+             << WEXITSTATUS(wait_val) << endl;
+        cerr << "Executed " << instructions
+             << " instructions." << endl;
+        tracing = false;
+        return false;
+    }
+    if (WIFSIGNALED(wait_val)) {
+        if (WTERMSIG(wait_val))
+            cerr << "Program terminated by signal "
+                 << WTERMSIG(wait_val) << endl;
+        if (WCOREDUMP(wait_val))
+            cerr << "Program core dumped!" << endl;
+        tracing = false;
+        cerr << "Executed " << instructions
+             << " instructions." << endl;
+        return false;
+    }
+    if (WIFSTOPPED(wait_val) && WSTOPSIG(wait_val) != SIGTRAP) {
+        cerr << "Program stopped by signal " << WSTOPSIG(wait_val) << endl;
+        tracing = false;
+        cerr << "Executed " << instructions << " instructions." << endl;
+            return false;
+    }
+    return true;
+}

simulators/gem5/util/statetrace/base/tracechild.hh

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2006-2007 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef TRACECHILD_HH
+#define TRACECHILD_HH
+
+#include "base/regstate.hh"
+
+class TraceChild : public RegState
+{
+  protected:
+    int pid;
+    uint64_t instructions;
+    bool tracing;
+  public:
+    TraceChild() : tracing(false), instructions(0)
+    {;}
+    virtual bool sendState(int socket) = 0;
+    virtual bool startTracing(const char * pathToFile, char * const argv[]);
+    virtual bool stopTracing();
+    virtual bool step();
+    virtual std::ostream & outputStartState(std::ostream & os) = 0;
+    bool
+    isTracing()
+    {
+        return tracing;
+    }
+  protected:
+    bool ptraceSingleStep();
+    bool doWait();
+};
+
+TraceChild * genTraceChild();
+
+#endif