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Filled out the object file loader so it can load object files for several OSs and architectures.

Browse source 
SConscript:
    Added ./libelf as an include search directory. There might be a better spot for this than where I put it.
arch/SConscript:
    Combined the linux_process.h and tru64_process.h into process.h. This allows each ISA to support processes from arbitrary OSs.
arch/alpha/SConscript:
    Added process.cc as a source file. It provides an implementation of createProcess, which takes an object_file object and creates the appropriate process object, or dies.
base/loader/elf_object.cc:
    Actually extract the OS and architecture from the elf file, rather than always guessing Alpha and Linux.
base/loader/object_file.hh:
    Added constants for SPARC, MIPS, and Solaris, and changed the include for the Addr type.
sim/process.cc:
    Pushed creation of specific process objects into the ISA specific code.

--HG--
extra : convert_revision : b4754e7ca8328672d07e1394c4d162e199606b53
This commit is contained in:
Gabe Black 2006-03-04 03:09:23 -05:00
parent dd0d8e6287
commit 7c4c623302
12 changed files with 368 additions and 32 deletions
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1
SConscript
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@ -374,6 +374,7 @@ def make_objs(sources, env):
# the corresponding build directory to pick up generated include
# files.
env.Append(CPPPATH='.')
env.Append(CPPPATH='./libelf')
# Debug binary
debugEnv = env.Copy(OBJSUFFIX='.do')

3
arch/SConscript
View file

@ -46,9 +46,8 @@ sources = []
# List of headers to generate
isa_switch_hdrs = Split('''
isa_traits.hh
linux_process.hh
tru64_process.hh
tlb.hh
process.hh
aout_machdep.h
ecoff_machdep.h
arguments.hh

1
arch/alpha/SConscript
View file

@ -64,6 +64,7 @@ syscall_emulation_sources = Split('''
common_syscall_emul.cc
linux_process.cc
tru64_process.cc
process.cc
''')
# Set up complete list of sources based on configuration.

61
arch/alpha/process.cc Normal file
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@ -0,0 +1,61 @@
/*
* Copyright (c) 2003-2004 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.
*/
#include "arch/alpha/process.hh"
namespace AlphaISA
{
LiveProcess *
createProcess(const std::string &nm, ObjectFile * objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
std::vector<std::string> &argv, std::vector<std::string> &envp)
{
LiveProcess * process = NULL;
if (objFile->getArch() != ObjectFile::Alpha)
fatal("Object file does not match architecture.");
switch (objFile->getOpSys()) {
case ObjectFile::Tru64:
process = new AlphaTru64Process(nm, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
case ObjectFile::Linux:
process = new AlphaLinuxProcess(nm, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
default:
fatal("Unknown/unsupported operating system.");
}
return process;
}
} // namespace AlphaISA

48
arch/alpha/process.hh Normal file
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@ -0,0 +1,48 @@
/*
* Copyright (c) 2003-2004 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.
*/
#ifndef __ALPHA_PROCESS_HH__
#define __ALPHA_PROCESS_HH__
#include <string>
#include "arch/alpha/linux_process.hh"
#include "arch/alpha/tru64_process.hh"
#include "base/loader/object_file.hh"
namespace AlphaISA
{
LiveProcess *
createProcess(const std::string &nm, ObjectFile * objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
std::vector<std::string> &argv, std::vector<std::string> &envp);
} // namespace AlphaISA
#endif // __ALPHA_PROCESS_HH__

56
arch/mips/process.cc Normal file
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@ -0,0 +1,56 @@
/*
* Copyright (c) 2003-2004 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.
*/
#include "arch/mips/process.hh"
namespace MipsISA
{
LiveProcess *
createProcess(const string &nm, ObjectFile * objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp)
{
LiveProcess * process = NULL;
if (objFile->getArch() != ObjectFile::MIPS)
fatal("Object file does not match architecture.");
switch (objFile->getOpSys()) {
case ObjectFile::Linux:
process = new MipsLinuxProcess(nm, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
default:
fatal("Unknown/unsupported operating system.");
}
return process;
}
} // namespace MipsISA

45
arch/mips/process.hh Normal file
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@ -0,0 +1,45 @@
/*
* Copyright (c) 2003-2004 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.
*/
#ifndef __MIPS_PROCESS_HH__
#define __MIPS_PROCESS_HH__
#include "arch/mips/linux_process.hh"
#include "base/loader/object_file.hh"
namespace MipsISA
{
LiveProcess *
createProcess(const string &nm, ObjectFile * objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp);
} // namespace MipsISA
#endif // __MIPS_PROCESS_HH__

56
arch/sparc/process.cc Normal file
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@ -0,0 +1,56 @@
/*
* Copyright (c) 2003-2004 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.
*/
#include "arch/sparc/process.hh"
namespace SparcISA
{
LiveProcess *
createProcess(const string &nm, ObjectFile * objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp)
{
LiveProcess * process = NULL;
if (objFile->getArch() != ObjectFile::SPARC)
fatal("Object file does not match architecture.");
switch (objFile->getOpSys()) {
case ObjectFile::Linux:
process = new SparcLinuxProcess(nm, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
case ObjectFile::Solaris:
default:
fatal("Unknown/unsupported operating system.");
}
return process;
}
} // namespace SparcISA

45
arch/sparc/process.hh Normal file
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@ -0,0 +1,45 @@
/*
* Copyright (c) 2003-2004 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.
*/
#ifndef __SPARC_PROCESS_HH__
#define __SPARC_PROCESS_HH__
#include "arch/sparc/linux_process.hh"
#include "base/loader/object_file.hh"
namespace SparcISA
{
LiveProcess *
createProcess(const string &nm, ObjectFile * objFile,
int stdin_fd, int stdout_fd, int stderr_fd,
vector<string> &argv, vector<string> &envp);
} // namespace SparcISA
#endif // __SPARC_PROCESS_HH__

45
base/loader/elf_object.cc
View file

@ -56,6 +56,8 @@ ElfObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
{
Elf *elf;
GElf_Ehdr ehdr;
Arch arch = UnknownArch;
OpSys opSys = UnknownOpSys;
// check that header matches library version
if (elf_version(EV_CURRENT) == EV_NONE)
@ -73,8 +75,8 @@ ElfObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
return NULL;
}
else {
if (ehdr.e_ident[EI_CLASS] == ELFCLASS32)
panic("32 bit ELF Binary, Not Supported");
// if (ehdr.e_ident[EI_CLASS] == ELFCLASS32)
// panic("32 bit ELF Binary, Not Supported");
/* @todo this emachine value isn't offical yet.
* so we probably shouldn't check it. */
// if (ehdr.e_machine != EM_ALPHA)
@ -82,8 +84,43 @@ ElfObject::tryFile(const string &fname, int fd, size_t len, uint8_t *data)
elf_end(elf);
return new ElfObject(fname, fd, len, data,
ObjectFile::Alpha, ObjectFile::Linux);
//Detect the architecture
//Versioning issues in libelf need to be resolved to get the correct
//SPARC constants.
//If MIPS supports 32 bit executables, this may need to be changed.
//Also, there are other MIPS constants which may be used, like
//EM_MIPS_RS3_LE and EM_MIPS_X
//Since we don't know how to check for alpha right now, we'll
//just assume if it wasn't something else and it's 64 bit, that's
//what it must be.
if (ehdr.e_machine == EM_SPARC64 ||
ehdr.e_machine == EM_SPARC ||
ehdr.e_machine == EM_SPARCV9) {
arch = ObjectFile::SPARC;
} else if (ehdr.e_machine == EM_MIPS
&& ehdr.e_ident[EI_CLASS] == ELFCLASS32) {
arch = ObjectFile::MIPS;
} else if (ehdr.e_ident[EI_CLASS] == ELFCLASS64) {
arch = ObjectFile::Alpha;
} else {
arch = ObjectFile::UnknownArch;
}
//Detect the operating system
switch (ehdr.e_ident[EI_OSABI])
{
case ELFOSABI_LINUX:
opSys = ObjectFile::Linux;
break;
case ELFOSABI_SOLARIS:
opSys = ObjectFile::Solaris;
case ELFOSABI_TRU64:
opSys = ObjectFile::Tru64;
default:
opSys = ObjectFile::UnknownOpSys;
}
return new ElfObject(fname, fd, len, data, arch, opSys);
}
}

11
base/loader/object_file.hh
View file

@ -29,7 +29,9 @@
#ifndef __OBJECT_FILE_HH__
#define __OBJECT_FILE_HH__
#include "arch/isa_traits.hh" // for Addr
#include <string>
#include "sim/host.hh" // for Addr
class FunctionalMemory;
class SymbolTable;
@ -40,13 +42,16 @@ class ObjectFile
enum Arch {
UnknownArch,
Alpha
Alpha,
SPARC,
MIPS
};
enum OpSys {
UnknownOpSys,
Tru64,
Linux
Linux,
Solaris
};
protected:

28
sim/process.cc
View file

@ -48,8 +48,7 @@
#include "sim/stats.hh"
#include "sim/syscall_emul.hh"
#include "arch/tru64_process.hh"
#include "arch/linux_process.hh"
#include "arch/process.hh"
using namespace std;
using namespace TheISA;
@ -376,27 +375,10 @@ LiveProcess::create(const string &nm,
fatal("Can't load object file %s", executable);
}
// check object type & set up syscall emulation pointer
if (objFile->getArch() == ObjectFile::Alpha) {
switch (objFile->getOpSys()) {
case ObjectFile::Tru64:
process = new AlphaTru64Process(nm, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
case ObjectFile::Linux:
process = new AlphaLinuxProcess(nm, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
break;
default:
fatal("Unknown/unsupported operating system.");
}
} else {
fatal("Unknown object file architecture.");
}
// set up syscall emulation pointer for the current ISA
process = createProcess(nm, objFile,
stdin_fd, stdout_fd, stderr_fd,
argv, envp);
delete objFile;