symbol.cc
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:3k
源码类别:
Windows CE
开发平台:
C/C++
- /********** * Copyright (c) 2004 Greg Parker. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY GREG PARKER ``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 AUTHOR 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 <string> #include <stdint.h> #include "section.h" #include "symbol.h" #include "stringtable.h" Symbol::Symbol(const string &newName, const Section *newSection, uint32_t newOffset, uint8_t newBind, uint8_t newType) : mName(newName), mSection(newSection), mOffset(newOffset), mBind(newBind), mType(newType), mSpecialSection(0) {
- mUsed = false; } Symbol::Symbol(Image& image, const StringTable& strtab, Elf32_Sym *sym) { mName = strtab[swap32(sym->st_name)]; uint16_t shndx = swap16(sym->st_shndx); mSpecialSection = shndx; if (shndx == SHN_ABS) { mSection = NULL; } else if (shndx == SHN_COMMON) { unimplemented("unresolved common symbol '%s'", mName.c_str()); } else { mSection = image.sections()[swap16(sym->st_shndx)]; } mOffset = swap32(sym->st_value) - (mSection ? mSection->vmaddr() : 0); mBind = ELF32_ST_BIND(sym->st_info); mType = ELF32_ST_TYPE(sym->st_info); mUsed = false;
- } const string& Symbol::name(void) const { return mName; } const Section *Symbol::section(void) const { return mSection; } bool Symbol::isGlobal(void) const { return mBind == STB_GLOBAL || mBind == STB_WEAK; } uint32_t Symbol::offset(bool interwork) const { if (interwork && mType == STT_LOPROC) return mOffset+1; else return mOffset; } uint32_t Symbol::vmaddr(bool interwork) const { return offset(interwork) + (mSection ? mSection->vmaddr() : 0); } Elf32_Sym Symbol::asElf(const Image& image) const { Elf32_Sym result; result.st_name = swap32(image.strtab()->indexOf(mName)); result.st_value = swap32(offset()); result.st_size = swap32(0); // fixme? result.st_info = ELF32_ST_INFO(mBind, mType); // 1 byte, don't swap result.st_other = 0; if (mSection) { vector<Section *>::const_iterator pos = find(image.sections().begin(), image.sections().end(), mSection); if (pos == image.sections().end()) { result.st_shndx = 0; } else { result.st_shndx = swap16(pos - image.sections().begin()); } } else { result.st_shndx = swap16(mSpecialSection); } return result; }