Automated merge with ssh://m5sim.org//repo/m5

9 files changed, 152 insertions, 51 deletions

diff --git a/src/arch/alpha/linux/process.cc b/src/arch/alpha/linux/process.cc
index efcd6623e..6684051af 100644
--- a/src/arch/alpha/linux/process.cc
+++ b/src/arch/alpha/linux/process.cc
@@ -52,7 +52,7 @@ unameFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
 
     strcpy(name->sysname, "Linux");
     strcpy(name->nodename, "m5.eecs.umich.edu");
-    strcpy(name->release, "2.4.20");
+    strcpy(name->release, "2.6.26");
     strcpy(name->version, "#1 Mon Aug 18 11:32:15 EDT 2003");
     strcpy(name->machine, "alpha");
 
diff --git a/src/arch/alpha/process.cc b/src/arch/alpha/process.cc
index 28e8df308..3e5851e74 100644
--- a/src/arch/alpha/process.cc
+++ b/src/arch/alpha/process.cc
@@ -32,8 +32,11 @@
 #include "arch/alpha/isa_traits.hh"
 #include "arch/alpha/process.hh"
 #include "base/loader/object_file.hh"
+#include "base/loader/elf_object.hh"
 #include "base/misc.hh"
 #include "cpu/thread_context.hh"
+#include "mem/page_table.hh"
+#include "sim/process_impl.hh"
 #include "sim/system.hh"
 
 using namespace AlphaISA;
@@ -60,11 +63,126 @@ AlphaLiveProcess::AlphaLiveProcess(LiveProcessParams *params,
 }
 
 void
+AlphaLiveProcess::argsInit(int intSize, int pageSize)
+{
+    objFile->loadSections(initVirtMem);
+
+    typedef M5_auxv_t<uint64_t> auxv_t;
+    std::vector<auxv_t>  auxv;
+
+    ElfObject * elfObject = dynamic_cast<ElfObject *>(objFile);
+    if(elfObject)
+    {
+        // modern glibc uses a bunch of auxiliary vectors to set up 
+        // TLS as well as do a bunch of other stuff
+        // these vectors go on the bottom of the stack, below argc/argv/envp
+        // pointers but above actual arg strings
+        // I don't have all the ones glibc looks at here, but so far it doesn't
+        // seem to be a problem.
+        // check out _dl_aux_init() in glibc/elf/dl-support.c for details
+        // --Lisa
+        auxv.push_back(auxv_t(M5_AT_PAGESZ, AlphaISA::VMPageSize));
+        auxv.push_back(auxv_t(M5_AT_CLKTCK, 100));
+        auxv.push_back(auxv_t(M5_AT_PHDR, elfObject->programHeaderTable()));
+        DPRINTF(Loader, "auxv at PHDR %08p\n", elfObject->programHeaderTable());
+        auxv.push_back(auxv_t(M5_AT_PHNUM, elfObject->programHeaderCount()));
+        auxv.push_back(auxv_t(M5_AT_ENTRY, objFile->entryPoint()));
+        auxv.push_back(auxv_t(M5_AT_UID, uid()));
+        auxv.push_back(auxv_t(M5_AT_EUID, euid()));
+        auxv.push_back(auxv_t(M5_AT_GID, gid()));
+        auxv.push_back(auxv_t(M5_AT_EGID, egid()));
+
+    }
+
+    // Calculate how much space we need for arg & env & auxv arrays.
+    int argv_array_size = intSize * (argv.size() + 1);
+    int envp_array_size = intSize * (envp.size() + 1);
+    int auxv_array_size = intSize * 2 * (auxv.size() + 1);
+
+    int arg_data_size = 0;
+    for (int i = 0; i < argv.size(); ++i) {
+        arg_data_size += argv[i].size() + 1;
+    }
+    int env_data_size = 0;
+    for (int i = 0; i < envp.size(); ++i) {
+        env_data_size += envp[i].size() + 1;
+    }
+
+    int space_needed =
+        argv_array_size + 
+        envp_array_size + 
+        auxv_array_size +
+        arg_data_size + 
+        env_data_size;
+
+    if (space_needed < 32*1024)
+        space_needed = 32*1024;
+
+    // set bottom of stack
+    stack_min = stack_base - space_needed;
+    // align it
+    stack_min = roundDown(stack_min, pageSize);
+    stack_size = stack_base - stack_min;
+    // map memory
+    pTable->allocate(stack_min, roundUp(stack_size, pageSize));
+
+    // map out initial stack contents
+    Addr argv_array_base = stack_min + intSize; // room for argc
+    Addr envp_array_base = argv_array_base + argv_array_size;
+    Addr auxv_array_base = envp_array_base + envp_array_size;
+    Addr arg_data_base = auxv_array_base + auxv_array_size;
+    Addr env_data_base = arg_data_base + arg_data_size;
+
+    // write contents to stack
+    uint64_t argc = argv.size();
+    if (intSize == 8)
+        argc = htog((uint64_t)argc);
+    else if (intSize == 4)
+        argc = htog((uint32_t)argc);
+    else
+        panic("Unknown int size");
+
+    initVirtMem->writeBlob(stack_min, (uint8_t*)&argc, intSize);
+
+    copyStringArray(argv, argv_array_base, arg_data_base, initVirtMem);
+    copyStringArray(envp, envp_array_base, env_data_base, initVirtMem);
+
+    //Copy the aux stuff
+    for(int x = 0; x < auxv.size(); x++)
+    {
+        initVirtMem->writeBlob(auxv_array_base + x * 2 * intSize,
+                (uint8_t*)&(auxv[x].a_type), intSize);
+        initVirtMem->writeBlob(auxv_array_base + (x * 2 + 1) * intSize,
+                (uint8_t*)&(auxv[x].a_val), intSize);
+    }
+
+    assert(NumArgumentRegs >= 2);
+
+    ThreadContext *tc = system->getThreadContext(contextIds[0]);
+
+    tc->setIntReg(ArgumentReg[0], argc);
+    tc->setIntReg(ArgumentReg[1], argv_array_base);
+    tc->setIntReg(StackPointerReg, stack_min);
+
+    Addr prog_entry = objFile->entryPoint();
+    tc->setPC(prog_entry);
+    tc->setNextPC(prog_entry + sizeof(MachInst));
+
+#if THE_ISA != ALPHA_ISA //e.g. MIPS or Sparc
+    tc->setNextNPC(prog_entry + (2 * sizeof(MachInst)));
+#endif
+
+
+}
+
+void
 AlphaLiveProcess::startup()
 {
     if (checkpointRestored)
         return;
 
+    Process::startup();
+
     argsInit(MachineBytes, VMPageSize);
 
     ThreadContext *tc = system->getThreadContext(contextIds[0]);
diff --git a/src/arch/alpha/process.hh b/src/arch/alpha/process.hh
index 0aeeb25db..65c4624ae 100644
--- a/src/arch/alpha/process.hh
+++ b/src/arch/alpha/process.hh
@@ -34,15 +34,14 @@
 
 #include "sim/process.hh"
 
-class ObjectFile;
-class System;
-
 class AlphaLiveProcess : public LiveProcess
 {
   protected:
     AlphaLiveProcess(LiveProcessParams *params, ObjectFile *objFile);
 
     void startup();
+
+    void argsInit(int intSize, int pageSize);
 };
 
 #endif // __ARCH_ALPHA_PROCESS_HH__
diff --git a/src/arch/sparc/process.hh b/src/arch/sparc/process.hh
index a37760139..95abb93d3 100644
--- a/src/arch/sparc/process.hh
+++ b/src/arch/sparc/process.hh
@@ -71,26 +71,6 @@ class SparcLiveProcess : public LiveProcess
     virtual void flushWindows(ThreadContext *tc) = 0;
 };
 
-template<class IntType>
-struct M5_auxv_t
-{
-    IntType a_type;
-    union {
-        IntType a_val;
-        IntType a_ptr;
-        IntType a_fcn;
-    };
-
-    M5_auxv_t()
-    {}
-
-    M5_auxv_t(IntType type, IntType val)
-    {
-        a_type = SparcISA::htog(type);
-        a_val = SparcISA::htog(val);
-    }
-};
-
 class Sparc32LiveProcess : public SparcLiveProcess
 {
   protected:
diff --git a/src/arch/x86/process.cc b/src/arch/x86/process.cc
index 52933b7f4..8d0cd5038 100644
--- a/src/arch/x86/process.cc
+++ b/src/arch/x86/process.cc
@@ -103,11 +103,6 @@
 using namespace std;
 using namespace X86ISA;
 
-M5_64_auxv_t::M5_64_auxv_t(int64_t type, int64_t val)
-{
-    a_type = X86ISA::htog(type);
-    a_val = X86ISA::htog(val);
-}
 
 X86LiveProcess::X86LiveProcess(LiveProcessParams * params,
         ObjectFile *objFile)
@@ -205,7 +200,9 @@ X86LiveProcess::startup()
 void
 X86LiveProcess::argsInit(int intSize, int pageSize)
 {
-    typedef M5_64_auxv_t auxv_t;
+    typedef M5_auxv_t<uint64_t> auxv_t;
+    std::vector<auxv_t>  auxv;
+
     Process::startup();
 
     string filename;
diff --git a/src/arch/x86/process.hh b/src/arch/x86/process.hh
index 5def9e13d..d034d990e 100644
--- a/src/arch/x86/process.hh
+++ b/src/arch/x86/process.hh
@@ -64,26 +64,10 @@
 
 namespace X86ISA
 {
-    struct M5_64_auxv_t
-    {
-        int64_t a_type;
-        union {
-            int64_t a_val;
-            int64_t a_ptr;
-            int64_t a_fcn;
-        };
-
-        M5_64_auxv_t()
-        {}
-
-        M5_64_auxv_t(int64_t type, int64_t val);
-    };
 
     class X86LiveProcess : public LiveProcess
     {
       protected:
-        std::vector<M5_64_auxv_t> auxv;
-
         X86LiveProcess(LiveProcessParams * params, ObjectFile *objFile);
 
         void startup();
diff --git a/src/base/loader/elf_object.cc b/src/base/loader/elf_object.cc
index f71c4456b..edaf323c7 100644
--- a/src/base/loader/elf_object.cc
+++ b/src/base/loader/elf_object.cc
@@ -291,6 +291,8 @@ ElfObject::ElfObject(const string &_filename, int _fd,
             data.size = phdr.p_filesz;
             data.fileImage = fileData + phdr.p_offset;
         } else {
+            // If it's none of the above but is loadable, 
+            // load the filesize worth of data
             Segment extra;
             extra.baseAddr = phdr.p_paddr;
             extra.size = phdr.p_filesz;
diff --git a/src/sim/process.cc b/src/sim/process.cc
index dab374d84..244fb9297 100644
--- a/src/sim/process.cc
+++ b/src/sim/process.cc
@@ -86,6 +86,16 @@ using namespace TheISA;
 // current number of allocated processes
 int num_processes = 0;
 
+template<class IntType>
+M5_auxv_t<IntType>::M5_auxv_t(IntType type, IntType val)
+{
+    a_type = TheISA::htog(type);
+    a_val = TheISA::htog(val);
+}
+
+template class M5_auxv_t<uint32_t>;
+template class M5_auxv_t<uint64_t>;
+
 Process::Process(ProcessParams * params)
     : SimObject(params), system(params->system), checkpointRestored(false),
     max_stack_size(params->max_stack_size)
@@ -658,11 +668,6 @@ LiveProcess::create(LiveProcessParams * params)
     if (objFile->getArch() != ObjectFile::Alpha)
         fatal("Object file architecture does not match compiled ISA (Alpha).");
 
-    if (objFile->hasTLS())
-        fatal("Object file has a TLS section and single threaded TLS is not\n"
-              "       currently supported for Alpha! Please recompile your "
-              "executable with \n       a non-TLS toolchain.\n");
-
     switch (objFile->getOpSys()) {
       case ObjectFile::Tru64:
         process = new AlphaTru64Process(params, objFile);
diff --git a/src/sim/process.hh b/src/sim/process.hh
index d6ed59ced..996663847 100644
--- a/src/sim/process.hh
+++ b/src/sim/process.hh
@@ -61,6 +61,22 @@ namespace TheISA
     class RemoteGDB;
 }
 
+template<class IntType>
+struct M5_auxv_t
+{
+    IntType a_type;
+    union {
+        IntType a_val;
+        IntType a_ptr;
+        IntType a_fcn;
+    };
+
+    M5_auxv_t()
+    {}
+
+    M5_auxv_t(IntType type, IntType val);
+};
+
 class Process : public SimObject
 {
   public: