本文整理汇总了C++中AsmJitHelper::db方法的典型用法代码示例。如果您正苦于以下问题:C++ AsmJitHelper::db方法的具体用法?C++ AsmJitHelper::db怎么用?C++ AsmJitHelper::db使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AsmJitHelper
的用法示例。
在下文中一共展示了AsmJitHelper::db方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: CreateVEH
NTSTATUS MExcept::CreateVEH(size_t pTargetBase, size_t imageSize, eModType mt, bool partial) {
AsmJitHelper a;
uint64_t result = 0;
auto& mods = _proc.Modules();
#ifdef USE64
// Add module to module table
if(!_pModTable.Valid()) {
_pModTable = _proc.Memory().Allocate(0x1000);
_pModTable.Release();
if(!_pModTable.Valid())
return LastNtStatus();
}
ModuleTable table;
_pModTable.Read(0, table);
// Add new entry to the table
table.entry[table.count].base = pTargetBase;
table.entry[table.count].size = imageSize;
table.count++;
_pModTable.Write(0, table);
// No handler required
if(partial)
return STATUS_SUCCESS;
// VEH codecave
_pVEHCode = _proc.Memory().Allocate(0x2000);
_pVEHCode.Release();
if(!_pVEHCode.Valid())
return LastNtStatus();
BLACBONE_TRACE("ManualMap: Vectored hander: 0x%p\n", _pVEHCode.Ptr());
asmjit::Label lExit = a->newLabel();
asmjit::Label lLoop1 = a->newLabel();
asmjit::Label skip1 = a->newLabel();
asmjit::Label found1 = a->newLabel();
//
// Assembly code for VectoredHandler64
// 0x10 - EXCEPTION_RECORD.ExceptionAddress
// 0x20 - EXCEPTION_RECORD.ExceptionInformation[0]
// 0x30 - EXCEPTION_RECORD.ExceptionInformation[2]
// 0x38 - EXCEPTION_RECORD.ExceptionInformation[3]
//
a->mov(asmjit::host::rax, asmjit::host::qword_ptr(asmjit::host::rcx));
a->cmp(asmjit::host::dword_ptr(asmjit::host::rax), EH_EXCEPTION_NUMBER); // Exception code
a->jne(lExit);
a->cmp(asmjit::host::qword_ptr(asmjit::host::rax, 0x20), EH_PURE_MAGIC_NUMBER1); // Sub code
a->jne(lExit);
a->cmp(asmjit::host::qword_ptr(asmjit::host::rax, 0x38), 0); // Image base
a->jne(lExit);
a->mov(asmjit::host::r9, _pModTable.Ptr());
a->mov(asmjit::host::rdx, asmjit::host::qword_ptr(asmjit::host::r9)); // Record count
a->add(asmjit::host::r9, sizeof(table.count));
a->xor_(asmjit::host::r10, asmjit::host::r10);
a->bind(lLoop1);
a->mov(asmjit::host::r8, asmjit::host::qword_ptr(asmjit::host::rax, 0x30));
a->mov(asmjit::host::r11, asmjit::host::qword_ptr(asmjit::host::r9));
a->cmp(asmjit::host::r8, asmjit::host::r11);
a->jl(skip1);
a->add(asmjit::host::r11, asmjit::host::qword_ptr(asmjit::host::r9, sizeof(table.entry[0].base))); // Size
a->cmp(asmjit::host::r8, asmjit::host::r11);
a->jg(skip1);
a->jmp(found1);
a->bind(skip1);
a->add(asmjit::host::r9, sizeof(ExceptionModule));
a->add(asmjit::host::r10, 1);
a->cmp(asmjit::host::r10, asmjit::host::rdx);
a->jne(lLoop1);
a->jmp(lExit);
a->bind(found1);
a->mov(asmjit::host::qword_ptr(asmjit::host::rax, 0x20), EH_MAGIC_NUMBER1);
a->mov(asmjit::host::rcx, asmjit::host::qword_ptr(asmjit::host::rcx));
a->mov(asmjit::host::rdx, asmjit::host::qword_ptr(asmjit::host::r9));
a->mov(asmjit::host::qword_ptr(asmjit::host::rax, 0x38), asmjit::host::rdx);
a->bind(lExit);
a->xor_(asmjit::host::rax, asmjit::host::rax);
a->ret();
a->db(0xCC);
a->db(0xCC);
a->db(0xCC);
if(_pVEHCode.Write(0, a->getCodeSize(), a->make()) != STATUS_SUCCESS) {
_pVEHCode.Free();
return LastNtStatus();
}
#else
UNREFERENCED_PARAMETER(pTargetBase);
UNREFERENCED_PARAMETER(imageSize);
// No handler required
if(partial)
return STATUS_SUCCESS;
// VEH codecave
_pVEHCode = _proc.Memory().Allocate(0x2000);
_pVEHCode.Release();
if(!_pVEHCode.Valid())
return LastNtStatus();
// Resolve compiler incremental table address, if any
void *pFunc = ResolveJmp(&VectoredHandler);
size_t fnSize = static_cast<size_t>(SizeOfProc(pFunc));
size_t dataOfs = 0, code_ofs = 0, code_ofs2 = 0;;
// Find and replace magic values
for(uint8_t *pData = reinterpret_cast<uint8_t*>(pFunc);
pData < reinterpret_cast<uint8_t*>(pFunc) + fnSize - 4;
pData++) {
// LdrpInvertedFunctionTable
//.........这里部分代码省略.........