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fix: Crashes when disassembling data

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Fixes #2025
This commit is contained in:
WerWolv
2024-12-25 16:36:53 +01:00
parent 010025cbfa
commit 0454a369e5
2 changed files with 20 additions and 16 deletions
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20
plugins/disassembler/source/content/views/view_disassembler.cpp
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@@ -48,12 +48,14 @@ namespace hex::plugin::disasm {
m_disassemblerTask = TaskManager::createTask("hex.disassembler.view.disassembler.disassembling"_lang, m_regionToDisassemble.getSize(), [this](auto &task) {
csh capstoneHandle;
cs_insn instruction;
cs_mode mode = m_mode;
// Create a capstone disassembler instance
if (cs_open(Disassembler::toCapstoneArchitecture(m_architecture), mode, &capstoneHandle) == CS_ERR_OK) {
auto *instruction = cs_malloc(capstoneHandle);
ON_SCOPE_EXIT { cs_free(instruction, 1); };
// Tell capstone to skip data bytes
cs_option(capstoneHandle, CS_OPT_SKIPDATA, CS_OPT_ON);
@@ -75,24 +77,24 @@ namespace hex::plugin::disasm {
// Ask capstone to disassemble the data
const u8 *code = buffer.data();
while (cs_disasm_iter(capstoneHandle, &code, &bufferSize, &instructionLoadAddress, &instruction)) {
while (cs_disasm_iter(capstoneHandle, &code, &bufferSize, &instructionLoadAddress, instruction)) {
task.update(instructionDataAddress);
// Convert the capstone instructions to our disassembly format
Disassembly disassembly = { };
disassembly.address = instruction.address;
disassembly.address = instruction->address;
disassembly.offset = instructionDataAddress - m_imageBaseAddress;
disassembly.size = instruction.size;
disassembly.mnemonic = instruction.mnemonic;
disassembly.operators = instruction.op_str;
disassembly.size = instruction->size;
disassembly.mnemonic = instruction->mnemonic;
disassembly.operators = instruction->op_str;
for (u16 j = 0; j < instruction.size; j++)
disassembly.bytes += hex::format("{0:02X} ", instruction.bytes[j]);
for (u16 j = 0; j < instruction->size; j++)
disassembly.bytes += hex::format("{0:02X} ", instruction->bytes[j]);
disassembly.bytes.pop_back();
m_disassembly.push_back(disassembly);
instructionDataAddress += instruction.size;
instructionDataAddress += instruction->size;
hadError = false;
}