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Implement ELF support

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This commit is contained in:
Sajid
2024-09-07 22:56:20 +06:00
parent 1e24423ea7
commit 36fb31de3a
11 changed files with 735 additions and 27 deletions
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34
PowerUtils/xex.cpp
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@@ -1,16 +1,19 @@
#include "xex.h"
#include "image.h"
#include <cassert>
std::unique_ptr<uint8_t[]> Xex2LoadImage(const uint8_t* data)
Image Xex2LoadImage(const uint8_t* data)
{
auto* header = reinterpret_cast<const XEX_HEADER*>(data);
auto* security = reinterpret_cast<const XEX2_SECURITY_INFO*>(data + header->AddressOfSecurityInfo);
const auto* compressionInfo = Xex2FindOptionalHeader<XEX_FILE_FORMAT_INFO>(header, XEX_HEADER_FILE_FORMAT_INFO);
Image image{};
std::unique_ptr<uint8_t[]> result{};
size_t imageSize = security->SizeOfImage;
// Decompress image
if (compressionInfo != nullptr)
{
assert(compressionInfo->CompressionType >= XEX_COMPRESSION_BASIC);
@@ -49,5 +52,32 @@ std::unique_ptr<uint8_t[]> Xex2LoadImage(const uint8_t* data)
}
}
return result;
image.data = std::move(result);
image.size = imageSize;
// Map image
const auto* dosHeader = reinterpret_cast<IMAGE_DOS_HEADER*>(image.data.get());
const auto* ntHeaders = reinterpret_cast<IMAGE_NT_HEADERS32*>(image.data.get() + dosHeader->e_lfanew);
image.base = ntHeaders->OptionalHeader.ImageBase;
image.entry_point = image.base + ntHeaders->OptionalHeader.AddressOfEntryPoint;
const auto numSections = ntHeaders->FileHeader.NumberOfSections;
const auto* sections = reinterpret_cast<const IMAGE_SECTION_HEADER*>(ntHeaders + 1);
for (size_t i = 0; i < numSections; i++)
{
const auto& section = sections[i];
uint8_t flags{};
if (section.Characteristics & IMAGE_SCN_CNT_CODE)
{
flags |= SectionFlags_Code;
}
image.Map(reinterpret_cast<const char*>(section.Name), section.VirtualAddress,
section.Misc.VirtualSize, flags, image.data.get() + section.VirtualAddress);
}
return image;
}