opcode

(redirected from Opcodes)

opcode

(ˈɒpˌkəʊd)
n
(Computer Science) a computer code containing operating instructions
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References in periodicals archive ?
Static features are obtained by mining opcodes from the executable files, and dynamic features are obtained by monitoring system calls, operations, and exceptions.
The signal method is an obfuscation method in which control flow graph opcodes (operation codes) are hidden [8-10].
- Identify Namespace return list of Namespace Identifiers - Get Log Page command change for Retain Asynchronous Event functionality - Globally Unique Updates - SGL Dword Simplification - Firmware Update Granularity - Namespace Optimal IO Boundary - Non-Operational Power State Permissive Mode - Data Transfer Direction for opcodes shall be valid - Reservations Changes - Operation Denied status code - Deallocated Value for Logical Block Data
For each binary, one text file was generated, which contain the frequency of opcodes in the corresponding binary file.
Opcodes histogram for classifying meta- morphic portable executables malware.
Those aren't the exact opcodes and binary representations for these instructions.
Since then, boundary scan tools have included STAPL/SVF to enable support on various devices with instruction "opcodes" for BIST testing (FIGURE 4).
In the custom insert source example are various instruction "opcodes" supported by the U1 BSDL, in this case for a Texas Instrument SN74BCT8244A.
Post-indexed addressing mode example: (a) C program, (b) Assembly program There are very few unused opcodes available in Thumb.
Topics include 80x86 integer representations, memory addressing, and registers; assembly language syntax; opcodes and instruction formats; data copy, Boolean, shift and rotate, and unconditional and conditional jump instructions; integer addition, subtraction, multiplication, and division instructions; the 80x86 stack and push and pop instructions; subroutine linkage using standard protocols and call and return instructions; and floating point and XMM registers and instructions.
When trying to detect valid assembly sequences, there is also a problem with some assembly instructions that have ASCII-valid opcodes.
The OPCODEs of PLCs vary from manufacturer to manufacturer, but in general their number is quite limited.