got.h
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.
- **********/
- #ifndef GOT_H
- #define GOT_H
- #include <stdint.h>
- #include <vector>
- using namespace std;
- #include "swap.h"
- #include "section.h"
- #include "relocation.h"
- #include "symbol.h"
- #include "complain.h"
- class GOT : public Section {
- vector<uint32_t> mEntries;
- vector<const Symbol *> mSymbols;
- public:
- GOT(Image& newImage)
- : Section(newImage)
- { }
- void read(Elf32_Shdr *shdr)
- {
- Section::read(shdr);
- uint32_t *entryArray = (uint32_t *)mContents;
- mEntries.resize(mSize / 4);
- mSymbols.resize(mSize / 4);
- for (unsigned int i = 0; i < mSize / 4; i++) {
- mEntries[i] = swap32(entryArray[i]);
- mSymbols[i] = NULL;
- }
- }
- const vector<uint32_t>& entries(void) const { return mEntries; }
- vector<const Symbol *>& symbols(void) { return mSymbols; }
- void buildRelocations(void)
- {
- // GOT entries may refer to local symbols, which will be stripped.
- // Instead, use section symbol + offset in section.
- mContents = (uint8_t *)calloc(mEntries.size(), 4);
- mSize = mEntries.size() * 4;
- for (unsigned int g = 0; g < mSymbols.size(); g++) {
- if (mSymbols[g]) {
- if (!mSymbols[g]->section()) {
- unimplemented("GOT entry is an absolute or other section-less symbol");
- }
- Symbol *sectionSymbol = mSymbols[g]->section()->baseSymbol();
- mRelocations.push_back
- (Relocation(R_ARM_ABS32, g*4, sectionSymbol,
- mSymbols[g]->offset(thumb)));
- }
- }
- }
- void emit(Elf32_Shdr *shdr, uint8_t *&buf, uint32_t& bufLen)
- {
- // Emitted GOT is all zero. Use NOBITS rather than PROGBITS.
- mType = SHT_NOBITS;
- Section::emit(shdr, buf, bufLen);
- }
- };
- #endif