mirror of
https://github.com/reactos/reactos.git
synced 2025-05-18 16:51:18 +00:00
[OBJ2BIN]
- Rewrite large parts of the tool - Support IMAGE_REL_I386_DIR32 svn path=/trunk/; revision=52217
This commit is contained in:
Timo Kreuzer
parent
1d9a93046a
commit
330b33ea0d
1 changed files with 76 additions and 125 deletions
|
|
@ -13,29 +13,43 @@ Usage(void)
|
|||
|
||||
static
|
||||
void
|
||||
RelocateImage(
|
||||
RelocateSection(
|
||||
char *pData,
|
||||
unsigned int nSize,
|
||||
PIMAGE_RELOCATION pReloc,
|
||||
unsigned int cNumRelocs,
|
||||
IMAGE_SECTION_HEADER *pSectionHeader,
|
||||
PIMAGE_SYMBOL pSymbols,
|
||||
unsigned int iOffset)
|
||||
{
|
||||
unsigned int i;
|
||||
unsigned int i, nOffset;
|
||||
PIMAGE_RELOCATION pReloc;
|
||||
char *pSection;
|
||||
WORD *p16;
|
||||
DWORD *p32;
|
||||
|
||||
for (i = 0; i < cNumRelocs; i++)
|
||||
pSection = pData + pSectionHeader->PointerToRawData;
|
||||
|
||||
/* Calculate pointer to relocation table */
|
||||
pReloc = (PIMAGE_RELOCATION)(pData + pSectionHeader->PointerToRelocations);
|
||||
|
||||
/* Loop all relocations */
|
||||
for (i = 0; i < pSectionHeader->NumberOfRelocations; i++)
|
||||
{
|
||||
if (pReloc->VirtualAddress > nSize) continue;
|
||||
nOffset = pReloc->VirtualAddress - pSectionHeader->VirtualAddress;
|
||||
|
||||
if (nOffset > pSectionHeader->SizeOfRawData) continue;
|
||||
|
||||
switch (pReloc->Type)
|
||||
{
|
||||
case IMAGE_REL_I386_ABSOLUTE:
|
||||
case 16:
|
||||
p16 = (void*)(pData + pReloc->VirtualAddress);
|
||||
p16 = (void*)(pSection + nOffset);
|
||||
*p16 += (WORD)(pSymbols[pReloc->SymbolTableIndex].Value + iOffset);
|
||||
break;
|
||||
|
||||
case IMAGE_REL_I386_DIR32:
|
||||
p32 = (void*)(pSection + nOffset);
|
||||
*p32 += (DWORD)(pSymbols[pReloc->SymbolTableIndex].Value + iOffset);
|
||||
break;
|
||||
|
||||
default:
|
||||
printf("Unknown relocatation type %ld address %ld\n",
|
||||
pReloc->Type, pReloc->VirtualAddress);
|
||||
|
|
@ -49,13 +63,13 @@ int main(int argc, char *argv[])
|
|||
{
|
||||
char *pszSourceFile;
|
||||
char *pszDestFile;
|
||||
unsigned long iOffset;
|
||||
unsigned long nFileSize, nBaseAddress, nOffsetSectionHeaders;
|
||||
FILE *pSourceFile, *pDestFile;
|
||||
IMAGE_FILE_HEADER FileHeader;
|
||||
IMAGE_SECTION_HEADER SectionHeader;
|
||||
IMAGE_FILE_HEADER *pFileHeader;
|
||||
IMAGE_SECTION_HEADER *pSectionHeader;
|
||||
unsigned int i;
|
||||
size_t nSize;
|
||||
void *pData;
|
||||
char *pData;
|
||||
PIMAGE_RELOCATION pReloc;
|
||||
PIMAGE_SYMBOL pSymbols;
|
||||
|
||||
|
|
@ -67,144 +81,81 @@ int main(int argc, char *argv[])
|
|||
|
||||
pszSourceFile = argv[1];
|
||||
pszDestFile = argv[2];
|
||||
nBaseAddress = strtol(argv[3], 0, 16);
|
||||
|
||||
pSourceFile = fopen(pszSourceFile, "rb");
|
||||
if (!pSourceFile)
|
||||
{
|
||||
fprintf(stderr, "Couldn't open source file '%s'\n", pszSourceFile);
|
||||
return -1;
|
||||
return -2;
|
||||
}
|
||||
|
||||
/* Get file size */
|
||||
fseek(pSourceFile, 0, SEEK_END);
|
||||
nFileSize = ftell(pSourceFile);
|
||||
rewind(pSourceFile);
|
||||
|
||||
/* Allocate memory for the file */
|
||||
pData = malloc(nFileSize);
|
||||
if (!pData)
|
||||
{
|
||||
fprintf(stderr, "Failed to allocate %ld bytes\n", nFileSize);
|
||||
return -3;
|
||||
}
|
||||
|
||||
/* Read the whole source file */
|
||||
if (!fread(pData, nFileSize, 1, pSourceFile))
|
||||
{
|
||||
fprintf(stderr, "Failed to read source file: %ld\n", nFileSize);
|
||||
return -4;
|
||||
}
|
||||
|
||||
/* Close source file */
|
||||
fclose(pSourceFile);
|
||||
|
||||
/* Open the destination file */
|
||||
pDestFile = fopen(pszDestFile, "wb");
|
||||
if (!pszDestFile)
|
||||
{
|
||||
fprintf(stderr, "Couldn't open dest file '%s'\n", pszDestFile);
|
||||
return -2;
|
||||
return -5;
|
||||
}
|
||||
|
||||
iOffset = strtol(argv[3], 0, 16);
|
||||
|
||||
/* Load the coff header */
|
||||
nSize = fread(&FileHeader, 1, sizeof(FileHeader), pSourceFile);
|
||||
if (nSize != sizeof(FileHeader))
|
||||
{
|
||||
fprintf(stderr, "Failed to read source file\n");
|
||||
return -3;
|
||||
}
|
||||
|
||||
/* Jump to section headers (skip optional header) */
|
||||
if (fseek(pSourceFile, FileHeader.SizeOfOptionalHeader, SEEK_CUR))
|
||||
{
|
||||
fprintf(stderr, "Failed to set file pointer\n");
|
||||
return -4;
|
||||
}
|
||||
/* Calculate table pointers */
|
||||
pFileHeader = (IMAGE_FILE_HEADER*)pData;
|
||||
pSymbols = (void*)(pData + pFileHeader->PointerToSymbolTable);
|
||||
pSectionHeader = (void*)(((char*)(pFileHeader + 1)) + pFileHeader->SizeOfOptionalHeader);
|
||||
|
||||
/* Loop all sections */
|
||||
for (i = 0; i < FileHeader.NumberOfSections; i++)
|
||||
for (i = 0; i < pFileHeader->NumberOfSections; i++)
|
||||
{
|
||||
/* Read section header */
|
||||
nSize = fread(&SectionHeader, 1, sizeof(SectionHeader), pSourceFile);
|
||||
if (nSize != sizeof(SectionHeader))
|
||||
{
|
||||
fprintf(stderr, "Failed to read section %ld file\n", i);
|
||||
return -5;
|
||||
}
|
||||
|
||||
/* Skip empty sections */
|
||||
if (SectionHeader.SizeOfRawData == 0) continue;
|
||||
if (pSectionHeader->SizeOfRawData == 0) continue;
|
||||
|
||||
/* Check if this is '.text' section */
|
||||
if (strcmp(SectionHeader.Name, ".text") == 0) break;
|
||||
}
|
||||
if (strcmp(pSectionHeader->Name, ".text") == 0)
|
||||
{
|
||||
RelocateSection(pData,
|
||||
pSectionHeader,
|
||||
pSymbols,
|
||||
nBaseAddress);
|
||||
|
||||
if (i == FileHeader.NumberOfSections)
|
||||
{
|
||||
fprintf(stderr, "No .text section found\n");
|
||||
return -6;
|
||||
}
|
||||
/* Write the section to the destination file */
|
||||
if (!fwrite(pData + pSectionHeader->PointerToRawData,
|
||||
pSectionHeader->SizeOfRawData, 1, pDestFile))
|
||||
{
|
||||
fprintf(stderr, "Failed to write data %ld\n",
|
||||
pSectionHeader->SizeOfRawData);
|
||||
return -6;
|
||||
}
|
||||
|
||||
/* Move file pointer to the symbol table */
|
||||
if (fseek(pSourceFile, FileHeader.PointerToSymbolTable, SEEK_SET))
|
||||
{
|
||||
fprintf(stderr, "Failed to set file pointer\n");
|
||||
return -7;
|
||||
}
|
||||
nBaseAddress += pSectionHeader->SizeOfRawData;
|
||||
}
|
||||
|
||||
/* Allocate memory for the symbols */
|
||||
nSize = FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
|
||||
pSymbols = malloc(nSize);
|
||||
if (!pSymbols)
|
||||
{
|
||||
fprintf(stderr, "Failed to allocate %ld bytes\n", nSize);
|
||||
return -8;
|
||||
}
|
||||
|
||||
/* Read symbol data */
|
||||
if (!fread(pSymbols, nSize, 1, pSourceFile))
|
||||
{
|
||||
fprintf(stderr, "Failed to read symbols: %ld\n", nSize);
|
||||
return -9;
|
||||
}
|
||||
|
||||
/* Move file pointer to the start of the section */
|
||||
if (fseek(pSourceFile, SectionHeader.PointerToRawData, SEEK_SET))
|
||||
{
|
||||
fprintf(stderr, "Failed to set file pointer\n");
|
||||
return -10;
|
||||
}
|
||||
|
||||
/* Allocate memory for the section */
|
||||
pData = malloc(SectionHeader.SizeOfRawData);
|
||||
if (!pData)
|
||||
{
|
||||
fprintf(stderr, "Failed to allocate %ld bytes\n", SectionHeader.SizeOfRawData);
|
||||
return -11;
|
||||
}
|
||||
|
||||
/* Read section data */
|
||||
if (!fread(pData, SectionHeader.SizeOfRawData, 1, pSourceFile))
|
||||
{
|
||||
fprintf(stderr, "Failed to read section %ld, at 0x%lx size=0x%lx \n",
|
||||
i, SectionHeader.PointerToRawData, SectionHeader.SizeOfRawData);
|
||||
return -12;
|
||||
}
|
||||
|
||||
/* Allocate memory for the relocation */
|
||||
nSize = SectionHeader.NumberOfRelocations * sizeof(IMAGE_RELOCATION);
|
||||
pReloc = malloc(nSize);
|
||||
if (!pReloc)
|
||||
{
|
||||
fprintf(stderr, "Failed to allocate %ld bytes\n", nSize);
|
||||
return -13;
|
||||
}
|
||||
|
||||
/* Move file pointer to the relocation table */
|
||||
if (fseek(pSourceFile, SectionHeader.PointerToRelocations, SEEK_SET))
|
||||
{
|
||||
fprintf(stderr, "Failed to set file pointer\n");
|
||||
return -14;
|
||||
}
|
||||
|
||||
/* Read relocation data */
|
||||
if (!fread(pReloc, nSize, 1, pSourceFile))
|
||||
{
|
||||
fprintf(stderr, "Failed to read section %ld file\n", i);
|
||||
return -15;
|
||||
}
|
||||
|
||||
RelocateImage(pData, SectionHeader.SizeOfRawData,
|
||||
pReloc, SectionHeader.NumberOfRelocations, pSymbols, iOffset);
|
||||
|
||||
/* Write the section to the destination file */
|
||||
if (!fwrite(pData, SectionHeader.SizeOfRawData, 1, pDestFile))
|
||||
{
|
||||
fprintf(stderr, "Failed to write data %ld\n",
|
||||
SectionHeader.SizeOfRawData);
|
||||
return -16;
|
||||
pSectionHeader++;
|
||||
}
|
||||
|
||||
fclose(pDestFile);
|
||||
fclose(pSourceFile);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue