480effb522
This adds multi-mode support and allows the simulator to read, interpret and execute 32bit and 64-bit, big and little endian binaries in syscall emulation mode. During process initialization, a minimal set of hardware capabilities are also advertised by the simulator to show support for 64-bit mode and little endian byte order. This also adds some fixups specific to 64-bit ELF ABI v1 that readjust the entry point and symbol table due to the use of function descriptors. Change-Id: I124339eff7b70dbd14e50ff970340c88c13bd0ad Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/40944 Reviewed-by: Boris Shingarov <shingarov@labware.com> Maintainer: Boris Shingarov <shingarov@labware.com> Tested-by: kokoro <noreply+kokoro@google.com>
141 lines
3.6 KiB
C++
141 lines
3.6 KiB
C++
/*
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* Copyright (c) 2002-2004 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "base/loader/object_file.hh"
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#include <string>
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#include <vector>
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#include "base/loader/raw_image.hh"
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namespace gem5
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{
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GEM5_DEPRECATED_NAMESPACE(Loader, loader);
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namespace loader
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{
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ObjectFile::ObjectFile(ImageFileDataPtr ifd) : ImageFile(ifd) {}
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const char *
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archToString(Arch arch)
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{
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switch (arch) {
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case UnknownArch:
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return "unknown";
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case SPARC64:
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return "sparc64";
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case SPARC32:
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return "sparc32";
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case Mips:
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return "mips";
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case X86_64:
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return "x86_64";
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case I386:
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return "i386";
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case Arm64:
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return "arm64";
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case Arm:
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return "arm";
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case Thumb:
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return "thumb";
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case Power:
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return "power";
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case Power64:
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return "power64";
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case Riscv64:
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return "riscv64";
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case Riscv32:
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return "riscv32";
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default:
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panic("Unrecognized arch %d.", arch);
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}
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}
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const char *
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opSysToString(OpSys op_sys)
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{
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switch (op_sys) {
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case UnknownOpSys:
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return "unknown";
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case Tru64:
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return "tru64";
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case Linux:
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case LinuxPower64ABIv1:
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case LinuxPower64ABIv2:
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return "linux";
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case Solaris:
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return "solaris";
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case LinuxArmOABI:
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return "linux_arm_OABI";
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case FreeBSD:
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return "freebsd";
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default:
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panic("Unrecognized operating system %d.", op_sys);
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}
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}
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namespace
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{
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typedef std::vector<ObjectFileFormat *> ObjectFileFormatList;
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ObjectFileFormatList &
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object_file_formats()
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{
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static ObjectFileFormatList formats;
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return formats;
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}
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} // anonymous namespace
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ObjectFileFormat::ObjectFileFormat()
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{
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object_file_formats().emplace_back(this);
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}
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ObjectFile *
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createObjectFile(const std::string &fname, bool raw)
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{
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ImageFileDataPtr ifd(new ImageFileData(fname));
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for (auto &format: object_file_formats()) {
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ObjectFile *file_obj = format->load(ifd);
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if (file_obj)
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return file_obj;
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}
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if (raw)
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return new RawImage(ifd);
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return nullptr;
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}
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} // namespace loader
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} // namespace gem5
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