Function DisasmRange

src/ColdAPI_Steam/Hook_utils/ColdHook.cpp:16–47

Disassembler call

	{
		//  Disassembler call
		static unsigned int DisasmRange(SIZE_T* OutPutInstructionsSize, ULONG_PTR* OutNextInst, SIZE_T HookSize, _OffsetType BaseAddressFormat, int DVer, void* Buffer)
		{
			if (OutPutInstructionsSize > NULL && OutNextInst > NULL && BaseAddressFormat && Buffer > NULL)
			{
				// Declare some function variables
				_DecodeResult res;
				_DecodedInst decodedInstructions[0x1000]; // 1000 should be enough.
				unsigned int decodedInstructionsCount = 0;

				// Instructions size
				SIZE_T LSize = 0;

				// We disassemble 0x100 bytes
				if (ColdHook_Service::Is64BitProcess()) {
					res = distorm_decode(BaseAddressFormat, (unsigned char*)Buffer, 0x100, Decode64Bits, decodedInstructions, 0x1000, &decodedInstructionsCount);
				}
				else {
					res = distorm_decode(BaseAddressFormat, (unsigned char*)Buffer, 0x100, Decode32Bits, decodedInstructions, 0x1000, &decodedInstructionsCount);
				}
				for (unsigned int i = 0; i < decodedInstructionsCount; i++) {
					if (LSize >= HookSize) {
						// Store the next instruction address.
						*OutNextInst = decodedInstructions[i].offset;
						break;
					}
					LSize += decodedInstructions[i].size;
				}
				*OutPutInstructionsSize = LSize;
				return decodedInstructionsCount;
			}
			return NULL;
		}

		// Generate base address
		static void* AllocateTrampoline(ULONG_PTR StartBaseAddress, SIZE_T PageS, int32_t* OutErrorCode, SIZE_T* ChangedHookSize)