Editing Bytecode (section)

==Examples==
*[[ActionScript]] executes in the ActionScript Virtual Machine (AVM), which is part of Flash Player and [[Adobe AIR|AIR]]. ActionScript code is typically transformed into bytecode format by a [[compiler]]. Examples of compilers include one built into Adobe Flash Professional and one built into Adobe Flash Builder and available in the [[Apache Flex|Adobe Flex SDK]].
*[[Adobe Flash]] objects
*[[BANCStar programming language|BANCStar]], originally bytecode for an interface-building tool but used also as a language
*[[Berkeley Packet Filter]]
*[[EBPF]]
*Berkeley Pascal<ref>{{cite web|last=G.|first=Adam Y.|title=Berkeley Pascal|website=[[GitHub]] |date=2022-07-11|url=https://github.com/adamyg/berkeley_pascal|access-date=2022-01-08}}</ref>
*[[Byte Code Engineering Library]]
*C to [[Java virtual machine]] compilers
*[[CLISP]] implementation of [[Common Lisp]] used to compile only to bytecode for many years; however, now it also supports compiling to native code with the help of [[GNU lightning]]
*[[CMUCL]] and Scieneer Common Lisp implementations of [[Common Lisp]] can compile either to native code or to bytecode, which is far more compact
*[[Common Intermediate Language]] executed by [[Common Language Runtime]], used by [[.NET]] languages such as [[C Sharp (programming language)|C#]]
*[[Dalvik (software)|Dalvik]] bytecode, designed for the [[Android (operating system)|Android]] platform, is executed by the [[Dalvik (software)|Dalvik virtual machine]]
*Dis bytecode, designed for the [[Inferno (operating system)]], is executed by the [[Dis virtual machine]]
*[[EiffelStudio]] for the [[Eiffel (programming language)|Eiffel]] programming language
*EM, the [[Amsterdam Compiler Kit]] virtual machine used as an intermediate compiling language and as a modern bytecode language
*[[Emacs]] is a text editor with most of its functions implemented by [[Emacs Lisp]], its built-in dialect of [[Lisp (programming language)|Lisp]]. These features are compiled into bytecode. This architecture allows users to customize the editor with a high level language, which after compiling into bytecode yields reasonable performance.
*[[Embeddable Common Lisp]] implementation of [[Common Lisp]] can compile to bytecode or C code
*[[Common Lisp]] provides a <code>disassemble</code> function<ref>{{cite web|url=http://www.lispworks.com/documentation/HyperSpec/Body/f_disass.htm|title=CLHS: Function DISASSEMBLE|website=www.lispworks.com}}</ref> which prints to the standard output the underlying code of a specified function. The result is implementation-dependent and may or may not resolve to bytecode. Its inspection can be utilized for debugging and optimization purposes.<ref>{{cite web|url=https://lispcookbook.github.io/cl-cookbook/performance.html|title=The Common Lisp Cookbook – Performance Tuning and Tips|author=Collective|date=2023-12-13|website=lispcookbook.github.io}}</ref> [[Steel Bank Common Lisp]], for instance, produces:
:<syntaxhighlight lang="lisp">
(disassemble '(lambda (x) (print x)))
; disassembly for (LAMBDA (X))
; 2436F6DF:       850500000F22     TEST EAX, [#x220F0000]     ; no-arg-parsing entry point
;       E5:       8BD6             MOV EDX, ESI
;       E7:       8B05A8F63624     MOV EAX, [#x2436F6A8]      ; #<FDEFINITION object for PRINT>
;       ED:       B904000000       MOV ECX, 4
;       F2:       FF7504           PUSH DWORD PTR [EBP+4]
;       F5:       FF6005           JMP DWORD PTR [EAX+5]
;       F8:       CC0A             BREAK 10                   ; error trap
;       FA:       02               BYTE #X02
;       FB:       18               BYTE #X18                  ; INVALID-ARG-COUNT-ERROR
;       FC:       4F               BYTE #X4F                  ; ECX
</syntaxhighlight>
*Ericsson implementation of [[Erlang (programming language)|Erlang]] uses BEAM bytecodes
*[[Ethereum]]'s Virtual Machine (EVM) is the runtime environment, using its own bytecode, for transaction execution in Ethereum (smart contracts).
*[[Icon (programming language)|Icon]]<ref name="Arizona_Icom" /> and [[Unicon (programming language)|Unicon]]<ref name="Icon_Unicon"/> programming languages
*[[Infocom]] used the [[Z-machine]] to make its software applications more portable
*[[Java bytecode]], which is executed by the [[Java virtual machine]]
**[[ObjectWeb ASM|ASM]]
**[[BCEL]]
**Javassist
*[[Keiko bytecode]] used by the [[Oberon-2]] programming language to make it and the [[Oberon operating system]] more portable.
*[[KEYB (command)|KEYB]], the [[MS-DOS]]/[[PC&nbsp;DOS]] keyboard driver with its resource file [[KEYBOARD.SYS]] containing layout information and short [[p-code machine|p-code]] sequences executed by an interpreter inside the resident driver.<ref name="Paul_2001_KEYBOARD"/><ref name="Mendelson_2001_KEYBOARD"/>
*[[LLVM IR]]
*LSL, a scripting language used in virtual worlds compiles into bytecode running on a virtual machine. Second Life has the original Mono version, Inworldz developed the Phlox version.
*[[Lua (programming language)|Lua]] language uses a register-based bytecode virtual machine
*m-code of the [[MATLAB]] language<ref name="Patent_6973644"/>
*[[Malbolge]] is an [[esoteric programming language|esoteric]] [[machine language]] for a ternary virtual machine.
*[[P-code machine#Microsoft P-code|Microsoft P-code]] used in [[Visual C++]] and [[Visual Basic (classic)|Visual Basic]]
*[[Multiplan]]<ref name="Multiplan"/>
*[[O-code]] of the [[BCPL]] programming language
*[[OCaml]] language optionally compiles to a compact bytecode form
*[[p-code machine|p-code]] of [[UCSD Pascal]] implementation of the [[Pascal (programming language)|Pascal]] language
*[[Parrot virtual machine]]
*[[Pick operating system|Pick BASIC]] also referred to as Data BASIC or [[MultiValue#MultiValue DataBASIC|MultiValue BASIC]]
*The [[R (programming language)|R environment for statistical computing]] offers a bytecode compiler through the compiler package, now standard with R version 2.13.0. It is possible to compile this version of R so that the base and recommended packages exploit this.<ref name="cran_r"/>
*[[Pyramid 2000]] adventure game
*[[Python (programming language)|Python]] scripts are being compiled on execution to Python's bytecode language, and the compiled files (.pyc) are cached inside the script's folder
:Compiled code can be analysed and investigated using a built-in tool for debugging the low-level bytecode. The tool can be initialized from the shell, for example:
:<syntaxhighlight lang="pycon">
>>> import dis # "dis" - Disassembler of Python byte code into mnemonics.
>>> dis.dis('print("Hello, World!")')
  1           0 LOAD_NAME                0 (print)
              2 LOAD_CONST               0 ('Hello, World!')
              4 CALL_FUNCTION            1
              6 RETURN_VALUE
</syntaxhighlight>
*[[Scheme 48]] implementation of Scheme using bytecode interpreter
*Bytecodes of many implementations of the [[Smalltalk]] language
*The [[Parallax Propeller#Built in Spin bytecode interpreter|Spin interpreter]] built into the [[Parallax, Inc. (company)|Parallax]] Propeller [[microcontroller]]
*The [[SQLite]] database engine translates SQL statements into a bespoke byte-code format.<ref name="SQLite"/>
*Apple [[SWEET16]]
*[[Tcl]]
*[[IBM i#TIMI|TIMI]] is used by compilers on the [[IBM i]] platform.
*[[Tiny BASIC#Implementation in a virtual machine|Tiny BASIC]]
*[[Visual FoxPro]] compiles to bytecode
*[[WebAssembly]]
*[[YARV]] and [[Rubinius]] for [[Ruby (programming language)|Ruby]]
*[[ZCODE]]
*[[Zend Engine]] opcodes for [[PHP]]