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git-svn-id: http://svn.purei.org/purei/trunk@153 b36208d7-6611-0410-8bec-b1987f11c4a2

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This commit is contained in:
jpd002 2007-10-25 02:51:35 +00:00
parent f0c904f881
commit e7a02f3461
2 changed files with 113 additions and 113 deletions
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224
Source/ELF.cpp
View File

@ -1,112 +1,112 @@
#include <assert.h>
#include <string.h>
#include <exception>
#include "ELF.h"
using namespace Framework;
using namespace std;
CELF::CELF(CStream* pS)
{
unsigned int nCount, i;
pS->Seek(0, STREAM_SEEK_END);
m_nLenght = (unsigned int)pS->Tell();
m_pData = new char[m_nLenght];
pS->Seek(0, STREAM_SEEK_SET);
pS->Read(m_pData, m_nLenght);
pS->Seek(0, STREAM_SEEK_SET);
pS->Read(&m_Header, sizeof(ELFHEADER));
if(m_Header.nId[0] != 0x7F || m_Header.nId[1] != 'E' || m_Header.nId[2] != 'L' || m_Header.nId[3] != 'F')
{
throw exception("This file isn't a valid ELF file.");
}
if(m_Header.nId[4] != 1 || m_Header.nId[5] != 1)
{
throw exception("This ELF file format is not supported. Only 32-bits LSB ordered ELFs are supported.");
}
nCount = m_Header.nProgHeaderCount;
m_pProgram = new ELFPROGRAMHEADER[nCount];
pS->Seek(m_Header.nProgHeaderStart, STREAM_SEEK_SET);
for(i = 0; i < nCount; i++)
{
pS->Read(&m_pProgram[i], sizeof(ELFPROGRAMHEADER));
}
nCount = m_Header.nSectHeaderCount;
m_pSection = new ELFSECTIONHEADER[nCount];
pS->Seek(m_Header.nSectHeaderStart, STREAM_SEEK_SET);
for(i = 0; i < nCount; i++)
{
pS->Read(&m_pSection[i], sizeof(ELFSECTIONHEADER));
}
}
CELF::~CELF()
{
delete [] m_pProgram;
delete [] m_pSection;
delete [] m_pData;
}
ELFSECTIONHEADER* CELF::GetSection(unsigned int nIndex)
{
if(nIndex >= m_Header.nSectHeaderCount)
{
return NULL;
}
return &m_pSection[nIndex];
}
const void* CELF::GetSectionData(unsigned int nIndex)
{
ELFSECTIONHEADER* pSect;
pSect = GetSection(nIndex);
if(pSect == NULL) return NULL;
return (const uint8*)m_pData + pSect->nOffset;
}
const void* CELF::FindSectionData(const char* sName)
{
ELFSECTIONHEADER* pSect;
pSect = FindSection(sName);
if(pSect == NULL) return NULL;
return (const uint8*)m_pData + pSect->nOffset;
}
ELFSECTIONHEADER* CELF::FindSection(const char* sName)
{
unsigned int i;
ELFSECTIONHEADER* pTemp;
const char* sSectData;
const char* sSectName;
sSectData = (const char*)GetSectionData(m_Header.nSectHeaderStringTableIndex);
if(sSectData == NULL) return NULL;
for(i = 0; i < m_Header.nSectHeaderCount; i++)
{
pTemp = GetSection(i);
sSectName = sSectData + pTemp->nStringTableIndex;
if(!strcmp(sName, sSectName))
{
return pTemp;
}
}
return NULL;
}
ELFPROGRAMHEADER* CELF::GetProgram(unsigned int nIndex)
{
if(nIndex >= m_Header.nProgHeaderCount)
{
return NULL;
}
return &m_pProgram[nIndex];
}
#include <assert.h>
#include <string.h>
#include <stdexcept>
#include "ELF.h"
using namespace Framework;
using namespace std;
CELF::CELF(CStream* pS)
{
unsigned int nCount, i;
pS->Seek(0, STREAM_SEEK_END);
m_nLenght = (unsigned int)pS->Tell();
m_pData = new char[m_nLenght];
pS->Seek(0, STREAM_SEEK_SET);
pS->Read(m_pData, m_nLenght);
pS->Seek(0, STREAM_SEEK_SET);
pS->Read(&m_Header, sizeof(ELFHEADER));
if(m_Header.nId[0] != 0x7F || m_Header.nId[1] != 'E' || m_Header.nId[2] != 'L' || m_Header.nId[3] != 'F')
{
throw runtime_error("This file isn't a valid ELF file.");
}
if(m_Header.nId[4] != 1 || m_Header.nId[5] != 1)
{
throw runtime_error("This ELF file format is not supported. Only 32-bits LSB ordered ELFs are supported.");
}
nCount = m_Header.nProgHeaderCount;
m_pProgram = new ELFPROGRAMHEADER[nCount];
pS->Seek(m_Header.nProgHeaderStart, STREAM_SEEK_SET);
for(i = 0; i < nCount; i++)
{
pS->Read(&m_pProgram[i], sizeof(ELFPROGRAMHEADER));
}
nCount = m_Header.nSectHeaderCount;
m_pSection = new ELFSECTIONHEADER[nCount];
pS->Seek(m_Header.nSectHeaderStart, STREAM_SEEK_SET);
for(i = 0; i < nCount; i++)
{
pS->Read(&m_pSection[i], sizeof(ELFSECTIONHEADER));
}
}
CELF::~CELF()
{
delete [] m_pProgram;
delete [] m_pSection;
delete [] m_pData;
}
ELFSECTIONHEADER* CELF::GetSection(unsigned int nIndex)
{
if(nIndex >= m_Header.nSectHeaderCount)
{
return NULL;
}
return &m_pSection[nIndex];
}
const void* CELF::GetSectionData(unsigned int nIndex)
{
ELFSECTIONHEADER* pSect;
pSect = GetSection(nIndex);
if(pSect == NULL) return NULL;
return (const uint8*)m_pData + pSect->nOffset;
}
const void* CELF::FindSectionData(const char* sName)
{
ELFSECTIONHEADER* pSect;
pSect = FindSection(sName);
if(pSect == NULL) return NULL;
return (const uint8*)m_pData + pSect->nOffset;
}
ELFSECTIONHEADER* CELF::FindSection(const char* sName)
{
unsigned int i;
ELFSECTIONHEADER* pTemp;
const char* sSectData;
const char* sSectName;
sSectData = (const char*)GetSectionData(m_Header.nSectHeaderStringTableIndex);
if(sSectData == NULL) return NULL;
for(i = 0; i < m_Header.nSectHeaderCount; i++)
{
pTemp = GetSection(i);
sSectName = sSectData + pTemp->nStringTableIndex;
if(!strcmp(sName, sSectName))
{
return pTemp;
}
}
return NULL;
}
ELFPROGRAMHEADER* CELF::GetProgram(unsigned int nIndex)
{
if(nIndex >= m_Header.nProgHeaderCount)
{
return NULL;
}
return &m_pProgram[nIndex];
}

2
Source/ELF.h
View File

@ -73,7 +73,7 @@ public:
const void* FindSectionData(const char*);
ELFPROGRAMHEADER* GetProgram(unsigned int);
ELFHEADER m_Header;
void* m_pData;
char* m_pData;
int m_nLenght;
private:
ELFSECTIONHEADER* m_pSection;