e7f442d527
Ignoring returned latency for now.
Refactored loadSections in ObjectFile hierarchy.
base/loader/aout_object.cc:
base/loader/aout_object.hh:
base/loader/ecoff_object.cc:
base/loader/ecoff_object.hh:
base/loader/elf_object.cc:
base/loader/elf_object.hh:
base/loader/object_file.hh:
Have each section record a pointer to image data.
This allows us to move common loadSections code into ObjectFile.
base/loader/object_file.cc:
Have each section record a pointer to image data.
This allows us to move common loadSections code into ObjectFile.
Also explicitly load BSS now since we need to allocate the
translations for it in syscall emulation.
cpu/base.hh:
Don't need memPort (just pass port in to ExecContext constructor).
cpu/exec_context.cc:
cpu/exec_context.hh:
mem/port.cc:
mem/translating_port.cc:
mem/translating_port.hh:
Pass syscall emulation Port into constructor instead of
getting it from BaseCPU.
cpu/simple/cpu.cc:
Explicitly choose one of three timing models.
Statically allocate request and packet objects when possible.
Several more minor bug fixes.
Works for simple program with SIMPLE_CPU_MEM_IMMEDIATE model now.
Probably have memory leaks with SIMPLE_CPU_MEM_TIMING (if it works at all).
Pass syscall emulation Port into constructor instead of
getting it from BaseCPU.
cpu/simple/cpu.hh:
Explicitly choose one of three timing models.
Statically allocate request and packet objects when possible.
Pass syscall emulation Port into constructor instead of
getting it from BaseCPU.
mem/physical.cc:
Set packet result field.
--HG--
extra : convert_revision : 359d0ebe4b4665867f4e26e7394ec0f1d17cfc26
152 lines
4.2 KiB
C++
152 lines
4.2 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 <list>
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#include <string>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "base/cprintf.hh"
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#include "base/loader/object_file.hh"
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#include "base/loader/symtab.hh"
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#include "base/loader/ecoff_object.hh"
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#include "base/loader/aout_object.hh"
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#include "base/loader/elf_object.hh"
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#include "mem/translating_port.hh"
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using namespace std;
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ObjectFile::ObjectFile(const string &_filename, int _fd,
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size_t _len, uint8_t *_data,
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Arch _arch, OpSys _opSys)
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: filename(_filename), descriptor(_fd), fileData(_data), len(_len),
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arch(_arch), opSys(_opSys)
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{
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}
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ObjectFile::~ObjectFile()
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{
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close();
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}
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bool
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ObjectFile::loadSection(Section *sec, TranslatingPort *memPort, bool loadPhys)
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{
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if (sec->size != 0) {
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Addr addr = sec->baseAddr;
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if (loadPhys) {
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// this is Alpha-specific... going to have to fix this
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// for other architectures
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addr &= (ULL(1) << 40) - 1;
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}
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if (sec->fileImage) {
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memPort->writeBlobFunctional(addr, sec->fileImage, sec->size, true);
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}
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else {
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// no image: must be bss
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memPort->memsetBlobFunctional(addr, 0, sec->size, true);
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}
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}
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return true;
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}
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bool
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ObjectFile::loadSections(TranslatingPort *memPort, bool loadPhys)
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{
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return (loadSection(&text, memPort, loadPhys)
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&& loadSection(&data, memPort, loadPhys)
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&& loadSection(&bss, memPort, loadPhys));
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}
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void
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ObjectFile::close()
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{
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if (descriptor >= 0) {
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::close(descriptor);
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descriptor = -1;
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}
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if (fileData) {
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::munmap(fileData, len);
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fileData = NULL;
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}
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}
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ObjectFile *
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createObjectFile(const string &fname)
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{
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// open the file
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int fd = open(fname.c_str(), O_RDONLY);
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if (fd < 0) {
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return NULL;
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}
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// find the length of the file by seeking to the end
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size_t len = (size_t)lseek(fd, 0, SEEK_END);
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// mmap the whole shebang
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uint8_t *fileData =
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(uint8_t *)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
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if (fileData == MAP_FAILED) {
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close(fd);
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return NULL;
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}
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ObjectFile *fileObj = NULL;
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// figure out what we have here
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if ((fileObj = EcoffObject::tryFile(fname, fd, len, fileData)) != NULL) {
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return fileObj;
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}
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if ((fileObj = AoutObject::tryFile(fname, fd, len, fileData)) != NULL) {
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return fileObj;
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}
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if ((fileObj = ElfObject::tryFile(fname, fd, len, fileData)) != NULL) {
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return fileObj;
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}
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// don't know what it is
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close(fd);
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munmap(fileData, len);
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return NULL;
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}
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