291 lines
14 KiB
C++
291 lines
14 KiB
C++
#include "views/view_disassembler.hpp"
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#include "providers/provider.hpp"
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#include "utils.hpp"
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#include <cstring>
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using namespace std::literals::string_literals;
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namespace hex {
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ViewDisassembler::ViewDisassembler(prv::Provider* &dataProvider) : View("Disassembler"), m_dataProvider(dataProvider) {
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View::subscribeEvent(Events::DataChanged, [this](const void*){
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this->m_shouldInvalidate = true;
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});
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View::subscribeEvent(Events::RegionSelected, [this](const void *userData) {
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Region region = *static_cast<const Region*>(userData);
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if (this->m_shouldMatchSelection) {
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this->m_codeRegion[0] = region.address;
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this->m_codeRegion[1] = region.address + region.size - 1;
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}
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});
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}
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ViewDisassembler::~ViewDisassembler() {
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View::unsubscribeEvent(Events::DataChanged);
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View::unsubscribeEvent(Events::RegionSelected);
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}
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void ViewDisassembler::createView() {
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if (this->m_shouldInvalidate) {
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this->m_disassembly.clear();
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csh capstoneHandle;
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cs_insn *instructions = nullptr;
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cs_mode mode = cs_mode(this->m_modeBasicARM | this->m_modeExtraARM | this->m_modeBasicMIPS | this->m_modeBasicX86 | this->m_modeBasicPPC);
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if (this->m_littleEndianMode)
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mode = cs_mode(mode | CS_MODE_LITTLE_ENDIAN);
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else
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mode = cs_mode(mode | CS_MODE_BIG_ENDIAN);
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if (this->m_micoMode)
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mode = cs_mode(mode | CS_MODE_MICRO);
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if (this->m_sparcV9Mode)
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mode = cs_mode(mode | CS_MODE_V9);
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if (cs_open(this->m_architecture, mode, &capstoneHandle) == CS_ERR_OK) {
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std::vector<u8> buffer(2048, 0x00);
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for (u64 address = 0; address < (this->m_codeRegion[1] - this->m_codeRegion[0] + 1); address += 2048) {
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size_t bufferSize = std::min(u64(2048), (this->m_codeRegion[1] - this->m_codeRegion[0] + 1) - address);
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this->m_dataProvider->read(this->m_codeRegion[0] + address, buffer.data(), bufferSize);
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size_t instructionCount = cs_disasm(capstoneHandle, buffer.data(), bufferSize, this->m_baseAddress + address, 0, &instructions);
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if (instructionCount == 0)
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break;
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u64 usedBytes = 0;
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for (u32 instr = 0; instr < instructionCount; instr++) {
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Disassembly disassembly = { 0 };
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disassembly.address = instructions[instr].address;
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disassembly.offset = this->m_codeRegion[0] + address + usedBytes;
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disassembly.size = instructions[instr].size;
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disassembly.mnemonic = instructions[instr].mnemonic;
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disassembly.operators = instructions[instr].op_str;
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for (u8 i = 0; i < instructions[instr].size; i++)
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disassembly.bytes += hex::format("%02X ", instructions[instr].bytes[i]);
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disassembly.bytes.pop_back();
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this->m_disassembly.push_back(disassembly);
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usedBytes += instructions[instr].size;
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}
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if (instructionCount < bufferSize)
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address -= (bufferSize - usedBytes);
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cs_free(instructions, instructionCount);
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}
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cs_close(&capstoneHandle);
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}
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this->m_shouldInvalidate = false;
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}
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if (ImGui::Begin("Disassembler", &this->getWindowOpenState(), ImGuiWindowFlags_NoCollapse)) {
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if (this->m_dataProvider != nullptr && this->m_dataProvider->isReadable()) {
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constexpr static const char * const ArchitectureNames[] = { "ARM32", "ARM64", "MIPS", "x86", "PowerPC", "Sparc", "SystemZ", "XCore", "68K", "TMS320C64x", "680X", "Ethereum" };
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ImGui::TextUnformatted("Position");
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ImGui::Separator();
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ImGui::InputScalar("Base address", ImGuiDataType_U64, &this->m_baseAddress, nullptr, nullptr, "%08llX", ImGuiInputTextFlags_CharsHexadecimal);
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ImGui::InputScalarN("Code region", ImGuiDataType_U64, this->m_codeRegion, 2, nullptr, nullptr, "%08llX", ImGuiInputTextFlags_CharsHexadecimal);
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ImGui::Checkbox("Match selection", &this->m_shouldMatchSelection);
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ImGui::NewLine();
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ImGui::TextUnformatted("Settings");
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ImGui::Separator();
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ImGui::Combo("Architecture", reinterpret_cast<int*>(&this->m_architecture), ArchitectureNames, 12);
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if (ImGui::BeginChild("modes", ImVec2(0, 100), true)) {
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if (ImGui::RadioButton("Little Endian", this->m_littleEndianMode))
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this->m_littleEndianMode = true;
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ImGui::SameLine();
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if (ImGui::RadioButton("Big Endian", !this->m_littleEndianMode))
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this->m_littleEndianMode = false;
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ImGui::NewLine();
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switch (this->m_architecture) {
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case CS_ARCH_ARM:
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this->m_modeBasicMIPS = cs_mode(0);
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this->m_modeBasicX86 = cs_mode(0);
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this->m_modeBasicPPC = cs_mode(0);
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this->m_micoMode = false;
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this->m_sparcV9Mode = false;
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if (this->m_modeBasicARM == cs_mode(0))
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this->m_modeBasicARM = CS_MODE_ARM;
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if (ImGui::RadioButton("ARM mode", this->m_modeBasicARM == CS_MODE_ARM))
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this->m_modeBasicARM = CS_MODE_ARM;
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ImGui::SameLine();
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if (ImGui::RadioButton("Thumb mode", this->m_modeBasicARM == CS_MODE_THUMB))
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this->m_modeBasicARM = CS_MODE_THUMB;
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if (ImGui::RadioButton("Default mode", (this->m_modeExtraARM & (CS_MODE_MCLASS | CS_MODE_V8)) == 0))
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this->m_modeExtraARM = cs_mode(0);
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ImGui::SameLine();
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if (ImGui::RadioButton("Cortex-M mode", (this->m_modeExtraARM & (CS_MODE_MCLASS | CS_MODE_V8)) == CS_MODE_MCLASS))
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this->m_modeExtraARM = CS_MODE_MCLASS;
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ImGui::SameLine();
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if (ImGui::RadioButton("ARMv8 mode", (this->m_modeExtraARM & (CS_MODE_MCLASS | CS_MODE_V8)) == CS_MODE_V8))
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this->m_modeExtraARM = CS_MODE_V8;
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break;
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case CS_ARCH_MIPS:
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this->m_modeBasicARM = cs_mode(0);
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this->m_modeExtraARM = cs_mode(0);
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this->m_modeBasicX86 = cs_mode(0);
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this->m_modeBasicPPC = cs_mode(0);
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this->m_sparcV9Mode = false;
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if (this->m_modeBasicMIPS == cs_mode(0))
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this->m_modeBasicMIPS = CS_MODE_MIPS32;
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if (ImGui::RadioButton("MIPS32 mode", this->m_modeBasicMIPS == CS_MODE_MIPS32))
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this->m_modeBasicMIPS = CS_MODE_MIPS32;
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ImGui::SameLine();
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if (ImGui::RadioButton("MIPS64 mode", this->m_modeBasicMIPS == CS_MODE_MIPS64))
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this->m_modeBasicMIPS = CS_MODE_MIPS64;
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ImGui::SameLine();
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if (ImGui::RadioButton("MIPS32R6 mode", this->m_modeBasicMIPS == CS_MODE_MIPS32R6))
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this->m_modeBasicMIPS = CS_MODE_MIPS32R6;
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ImGui::Checkbox("Micro Mode", &this->m_micoMode);
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break;
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case CS_ARCH_X86:
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this->m_modeBasicARM = cs_mode(0);
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this->m_modeExtraARM = cs_mode(0);
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this->m_modeBasicMIPS = cs_mode(0);
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this->m_modeBasicPPC = cs_mode(0);
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this->m_micoMode = false;
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this->m_sparcV9Mode = false;
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if (this->m_modeBasicX86 == cs_mode(0))
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this->m_modeBasicX86 = CS_MODE_16;
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if (ImGui::RadioButton("16-bit mode", this->m_modeBasicX86 == CS_MODE_16))
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this->m_modeBasicX86 = CS_MODE_16;
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ImGui::SameLine();
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if (ImGui::RadioButton("32-bit mode", this->m_modeBasicX86 == CS_MODE_32))
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this->m_modeBasicX86 = CS_MODE_32;
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ImGui::SameLine();
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if (ImGui::RadioButton("64-bit mode", this->m_modeBasicX86 == CS_MODE_64))
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this->m_modeBasicX86 = CS_MODE_64;
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break;
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case CS_ARCH_PPC:
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this->m_modeBasicARM = cs_mode(0);
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this->m_modeExtraARM = cs_mode(0);
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this->m_modeBasicMIPS = cs_mode(0);
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this->m_modeBasicX86 = cs_mode(0);
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this->m_micoMode = false;
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this->m_sparcV9Mode = false;
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if (m_modeBasicPPC == cs_mode(0))
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this->m_modeBasicPPC = CS_MODE_32;
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if (ImGui::RadioButton("32-bit mode", this->m_modeBasicPPC == CS_MODE_32))
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this->m_modeBasicPPC = CS_MODE_32;
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ImGui::SameLine();
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if (ImGui::RadioButton("64-bit mode", this->m_modeBasicPPC == CS_MODE_64))
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this->m_modeBasicPPC = CS_MODE_64;
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break;
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case CS_ARCH_SPARC:
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this->m_modeBasicARM = cs_mode(0);
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this->m_modeExtraARM = cs_mode(0);
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this->m_modeBasicMIPS = cs_mode(0);
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this->m_modeBasicX86 = cs_mode(0);
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this->m_modeBasicPPC = cs_mode(0);
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this->m_micoMode = false;
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ImGui::Checkbox("Sparc V9 mode", &this->m_sparcV9Mode);
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break;
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case CS_ARCH_ARM64:
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case CS_ARCH_SYSZ:
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case CS_ARCH_XCORE:
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case CS_ARCH_M68K:
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case CS_ARCH_TMS320C64X:
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case CS_ARCH_M680X:
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case CS_ARCH_EVM:
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this->m_modeBasicARM = cs_mode(0);
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this->m_modeExtraARM = cs_mode(0);
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this->m_modeBasicMIPS = cs_mode(0);
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this->m_modeBasicX86 = cs_mode(0);
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this->m_modeBasicPPC = cs_mode(0);
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this->m_micoMode = false;
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this->m_sparcV9Mode = false;
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break;
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}
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}
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ImGui::EndChild();
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ImGui::SetCursorPosX((ImGui::GetContentRegionAvailWidth() - 300) / 2);
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if (ImGui::Button("Disassemble", ImVec2(300, 20)))
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this->m_shouldInvalidate = true;
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ImGui::NewLine();
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ImGui::TextUnformatted("Disassembly");
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ImGui::Separator();
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if (ImGui::BeginTable("##disassembly", 4, ImGuiTableFlags_ScrollY | ImGuiTableFlags_Borders | ImGuiTableFlags_Resizable | ImGuiTableFlags_RowBg | ImGuiTableFlags_Reorderable)) {
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ImGui::TableSetupScrollFreeze(0, 1);
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ImGui::TableSetupColumn("Address");
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ImGui::TableSetupColumn("Offset");
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ImGui::TableSetupColumn("Bytes");
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ImGui::TableSetupColumn("Disassembly");
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ImGuiListClipper clipper;
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clipper.Begin(this->m_disassembly.size());
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ImGui::TableHeadersRow();
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while (clipper.Step()) {
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for (u64 i = clipper.DisplayStart; i < clipper.DisplayEnd; i++) {
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ImGui::TableNextRow();
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ImGui::TableNextColumn();
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if (ImGui::Selectable(("##DisassemblyLine"s + std::to_string(i)).c_str(), false, ImGuiSelectableFlags_SpanAllColumns)) {
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Region selectRegion = { this->m_disassembly[i].offset, this->m_disassembly[i].size };
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View::postEvent(Events::SelectionChangeRequest, &selectRegion);
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}
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ImGui::SameLine();
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ImGui::Text("0x%llx", this->m_disassembly[i].address);
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ImGui::TableNextColumn();
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ImGui::Text("0x%llx", this->m_disassembly[i].offset);
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ImGui::TableNextColumn();
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ImGui::TextUnformatted(this->m_disassembly[i].bytes.c_str());
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ImGui::TableNextColumn();
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ImGui::TextColored(ImColor(0xFFD69C56), "%s", this->m_disassembly[i].mnemonic.c_str());
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ImGui::SameLine();
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ImGui::TextUnformatted(this->m_disassembly[i].operators.c_str());
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}
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}
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clipper.End();
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ImGui::EndTable();
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}
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}
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}
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ImGui::End();
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}
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void ViewDisassembler::createMenu() {
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}
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} |