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Scan all of swa functions

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Sajid 2024-09-13 20:54:18 +06:00
parent 3d5f05f529
commit ed81fec868
1 changed files with 92 additions and 15 deletions
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105
PowerAnalyse/main.cpp
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@ -4,33 +4,60 @@
#include <image.h> #include <image.h>
#include "function.h" #include "function.h"
#include <print> #include <print>
#include <xbox.h>
int main() int main()
{ {
const auto file = LoadFile("cond-fall.elf").value(); const auto file = LoadFile("private/default.xex").value();
auto image = Image::ParseImage(file.data(), file.size()).value(); auto image = Image::ParseImage(file.data(), file.size()).value();
for (const auto& section : image.sections) //for (const auto& section : image.sections)
{ //{
image.symbols.emplace(section.name, section.base, section.size, Symbol_Section); // image.symbols.emplace(section.name, section.base, section.size, Symbol_Section);
} //}
//ppc_insn insn; uint32_t cxxFrameHandler = std::byteswap(0x831B1C90);
//uint8_t c[4] = { 0x10, 0x00, 0x59, 0xC3 }; uint32_t cSpecificFrameHandler = std::byteswap(0x8324B3BC);
//ppc::Disassemble(c, 0x831D6C64, insn); image.symbols.emplace("__CxxFrameHandler", 0x831B1C90, 0x38, Symbol_Function);
//std::println("{:20}{}", insn.opcode->name, insn.op_str); image.symbols.emplace("__C_specific_handler", 0x82BD7780, 0x38, Symbol_Function);
image.symbols.emplace("memcpy", 0x831B0ED0, 0x488, Symbol_Function);
image.symbols.emplace("memset", 0x831B0BA0, 0xA0, Symbol_Function);
image.symbols.emplace("blkmov", 0x831B1358, 0xA8, Symbol_Function);
image.symbols.emplace(std::format("sub_{:X}", 0x82EF5D78), 0x82EF5D78, 0x3F8, Symbol_Function);
auto fnd = Function::Analyze(image.Find(0x831B1358), image.size, 0x831B1358);
std::vector<Function> functions; std::vector<Function> functions;
auto& pdata = *image.Find(".pdata");
size_t count = pdata.size / sizeof(IMAGE_CE_RUNTIME_FUNCTION);
auto* pf = (IMAGE_CE_RUNTIME_FUNCTION*)pdata.data;
for (size_t i = 0; i < count; i++)
{
auto fn = pf[i];
fn.BeginAddress = std::byteswap(fn.BeginAddress);
fn.Data = std::byteswap(fn.Data);
auto& f = functions.emplace_back();
f.base = fn.BeginAddress;
f.size = fn.FunctionLength * 4;
image.symbols.emplace(std::format("sub_{:X}", f.base), f.base, f.size, Symbol_Function);
}
// auto sym = image.symbols.find(0x822C0000);
std::vector<Function> missingFunctions;
for (const auto& section : image.sections) for (const auto& section : image.sections)
{ {
if (!(section.flags & SectionFlags_Code)) if (!(section.flags & SectionFlags_Code))
{ {
continue; continue;
} }
size_t base = section.base; size_t base = section.base;
uint8_t* data = section.data; uint8_t* data = section.data;
uint8_t* dataEnd = section.data + section.size; uint8_t* dataEnd = section.data + section.size;
const Symbol* prevSymbol = nullptr;
while (data < dataEnd) while (data < dataEnd)
{ {
if (*(uint32_t*)data == 0) if (*(uint32_t*)data == 0)
@ -40,13 +67,63 @@ int main()
continue; continue;
} }
const auto& fn = functions.emplace_back(Function::Analyze(data, dataEnd - data, base)); if (*(uint32_t*)data == cxxFrameHandler || *(uint32_t*)data == cSpecificFrameHandler)
data += fn.size; {
base += fn.size; data += 8;
base += 8;
continue;
}
image.symbols.emplace(std::format("sub_{:X}", fn.base), fn.base, fn.size, Symbol_Function); auto fnSymbol = image.symbols.find(base);
if (fnSymbol != image.symbols.end() && fnSymbol->type == Symbol_Function)
{
assert(fnSymbol->address == base);
prevSymbol = &*fnSymbol;
base += fnSymbol->size;
data += fnSymbol->size;
}
else
{
auto& missingFn = missingFunctions.emplace_back(Function::Analyze(data, dataEnd - data, base));
base += missingFn.size;
data += missingFn.size;
std::println("sub_{:X}", missingFn.base);
} }
} }
}
//ppc_insn insn;
//uint8_t c[4] = { 0x10, 0x00, 0x59, 0xC3 };
//ppc::Disassemble(c, 0x831D6C64, insn);
//std::println("{:20}{}", insn.opcode->name, insn.op_str);
//for (const auto& section : image.sections)
//{
// if (!(section.flags & SectionFlags_Code))
// {
// continue;
// }
// size_t base = section.base;
// uint8_t* data = section.data;
// uint8_t* dataEnd = section.data + section.size;
// while (data < dataEnd)
// {
// if (*(uint32_t*)data == 0)
// {
// data += 4;
// base += 4;
// continue;
// }
// const auto& fn = functions.emplace_back(Function::Analyze(data, dataEnd - data, base));
// data += fn.size;
// base += fn.size;
// image.symbols.emplace(std::format("sub_{:X}", fn.base), fn.base, fn.size, Symbol_Function);
// }
//}
const auto entrySymbol = image.symbols.find(image.entry_point); const auto entrySymbol = image.symbols.find(image.entry_point);
assert(entrySymbol != image.symbols.end()); assert(entrySymbol != image.symbols.end());