Byte order adjustment method in binary translation

Abstract

The invention discloses a byte order adjustment method in binary translation, belonging to the technical field of computers, which comprises the following steps: loading a source program executable image by the execution engine of a dynamic binary translation system, adjusting the byte orders of the contents of each program segment, and synchronously adjusting the number of loaded parameters, contents of the parameters and environmental variables; modifying the effective address of an intermediate command representing internal memory access so that the expression of the modified effective address accords with the semantic of the internal memory access of a source program so as to load or store correct data in an internal memory; translating the source program command into the intermediate command by a front decoder, adding the generated intermediate command to a constructed intermediate command basic block until the occurrence of direct skip or system call, finishing the construction of the current basic block, and sending the basic block to a back end for executing. The invention avoids the flitting of byte orders of internal memory data by using the method for modifying internal memory address, has high efficiency, correctness and commonality in the field of binary translation.

Description

technical field [0001] The invention relates to a method in the field of computer technology, in particular to a byte order adjustment method in binary translation. Background technique [0002] Dynamic binary translation technology is an important part of the process-level virtual machine field. It dynamically translates the binary code corresponding to the source machine platform into binary code that can run on the target machine platform. It is the solution to legacy code and improve the adaptability of software platforms An effective method provides a way for software transplantation and system performance improvement. [0003] Endianness is a basic attribute of computer architecture, and it is a method for judging the high and low bits of multi-byte data in memory when the computer processes data. There are two types of byte order: big endian (Big Endian) and little endian (Little Endian). Big-Endian means that the high-order bytes are arranged at the low address end...

AI Technical Summary

Problems solved by technology

However, although it is a hardware implementation, the above technology still needs to move the internal byte order of the data, and the logic unit is also relatively cumbersome, so the overhead of this movement is very large

For those processors without hardware architecture support, the overhead of Byte Swapping is even greater, which has a greater constraint on system performance