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Search for and print out register save/load locations

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Signed-off-by: Isaac Marovitz <isaacryu@icloud.com>
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Isaac Marovitz 2025-03-13 10:17:10 -04:00
parent 1c571c8576
commit 9c6c3dbaa6
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GPG Key ID: 97250B2B09A132E1
1 changed files with 59 additions and 4 deletions
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63
XenonAnalyse/main.cpp
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@ -1,11 +1,11 @@
#include "fmt/xchar.h"
#include "function.h"
#include <algorithm>
#include <cassert> #include <cassert>
#include <iterator>
#include <file.h>
#include <disasm.h> #include <disasm.h>
#include <file.h>
#include <image.h> #include <image.h>
#include <xbox.h> #include <xbox.h>
#include <fmt/core.h>
#include "function.h"
#define SWITCH_ABSOLUTE 0 #define SWITCH_ABSOLUTE 0
#define SWITCH_COMPUTED 1 #define SWITCH_COMPUTED 1
@ -21,6 +21,59 @@ struct SwitchTable
uint32_t type{}; uint32_t type{};
}; };
static const std::vector<uint8_t> RESTGPRLR_14 = { 0xe9, 0xc1, 0xff, 0x68 };
static const std::vector<uint8_t> SAVEGPRLR_14 = { 0xf9, 0xc1, 0xff, 0x68 };
static const std::vector<uint8_t> RESTFPR_14 = { 0xc9, 0xcc, 0xff, 0x70 };
static const std::vector<uint8_t> SAVEFPR_14 = { 0xd9, 0xcc, 0xff, 0x70 };
static const std::vector<uint8_t> RESTVMX_14 = { 0x39, 0x60, 0xfe, 0xe0, 0x7d, 0xcb, 0x60, 0xce };
static const std::vector<uint8_t> SAVEVMX_14 = { 0x39, 0x60, 0xfe, 0xe0, 0x7d, 0xcb, 0x61, 0xce };
static const std::vector<uint8_t> RESTVMX_64 = { 0x39, 0x60, 0xfc, 0x00, 0x10, 0x0b, 0x60, 0xcb };
static const std::vector<uint8_t> SAVEVMX_64 = { 0x39, 0x60, 0xfc, 0x00, 0x10, 0x0b, 0x61, 0xcb };
uint32_t BytePatternSearch(uint8_t* data, uint32_t size, uint32_t baseAddress, const std::vector<uint8_t>& pattern)
{
auto result = std::search(data, data + size, pattern.begin(), pattern.end());
if (result != data + size) {
return baseAddress + std::distance(data, result);
}
return UINT32_MAX;
}
void RegisterFunctionsSearch(Image& image)
{
uint32_t baseAddress = UINT32_MAX;
for (const auto& section : image.sections) {
if (section.name == ".text") {
baseAddress = section.base;
if (baseAddress == UINT32_MAX) {
fmt::println("Could not find \".text\" section.");
return;
}
uint32_t restgprlr_14 = BytePatternSearch(section.data, section.size, baseAddress, RESTGPRLR_14);
uint32_t savegprlr_14 = BytePatternSearch(section.data, section.size, baseAddress, SAVEGPRLR_14);
uint32_t restfpr_14 = BytePatternSearch(section.data, section.size, baseAddress, RESTFPR_14);
uint32_t savefpr_14 = BytePatternSearch(section.data, section.size, baseAddress, SAVEFPR_14);
uint32_t restvmx_14 = BytePatternSearch(section.data, section.size, baseAddress, RESTVMX_14);
uint32_t savevmx_14 = BytePatternSearch(section.data, section.size, baseAddress, SAVEVMX_14);
uint32_t restvmx_64 = BytePatternSearch(section.data, section.size, baseAddress, RESTVMX_64);
uint32_t savevmx_64 = BytePatternSearch(section.data, section.size, baseAddress, SAVEVMX_64);
fmt::println("restgprlr_14_address = 0x{:X}", restgprlr_14);
fmt::println("savegprlr_14_address = 0x{:X}", savegprlr_14);
fmt::println("restfpr_14_address = 0x{:X}", restfpr_14);
fmt::println("savefpr_14_address = 0x{:X}", savefpr_14);
fmt::println("restvmx_14_address = 0x{:X}", restvmx_14);
fmt::println("savevmx_14_address = 0x{:X}", savevmx_14);
fmt::println("restvmx_64_address = 0x{:X}", restvmx_64);
fmt::println("savevmx_64_address = 0x{:X}", savevmx_64);
}
}
}
void ReadTable(Image& image, SwitchTable& table) void ReadTable(Image& image, SwitchTable& table)
{ {
uint32_t pOffset; uint32_t pOffset;
@ -192,6 +245,8 @@ int main(int argc, char** argv)
const auto file = LoadFile(argv[1]); const auto file = LoadFile(argv[1]);
auto image = Image::ParseImage(file.data(), file.size()); auto image = Image::ParseImage(file.data(), file.size());
RegisterFunctionsSearch(image);
auto printTable = [&](const SwitchTable& table) auto printTable = [&](const SwitchTable& table)
{ {
println("[[switch]]"); println("[[switch]]");