|
| |
| | [No title] |
 | | A binary recompiler is a software system that takes executable binaries as input, analyzes their structure, applies transformations and optimizations, and outputs new optimized executable binaries. | | | Profile-driven recompilation introduces a more complex optimization process, where a binary is first recompiled to add instrumentation, executed on test data to generate profile data, and finally recompiled again to incorporate profile-based optimizations. | | | The first area studies the benefits of the recompilation of legacy binaries simply by applying modern compiler optimizations that were unavailable when the binary was first produced. |
|
http://www.eecs.umich.edu/~jringenb/binary_recomp.html
(985 words)
|
|
| |
| | Dynamic Recompilation - An Introduction - Emuforums.com |
| | Dynamic recompilation deviates from this procedure by working with whole blocks of code instead of single instructions, and that those blocks are translated into the machine language of the processor the emulator is running on. | | | Dynamic recompilation also known as dynamic binary translation is the process of translating binary code blocks during runtime into the binary code of the host machine. | | | One of the big advantages of dynamic recompilation is that you can actually use the registers of the host machine when an emulated instruction uses registers. |
|
http://www.ngemu.com/forums/archive/index.php/t-20491
(3411 words)
|
|
| |
| | Binary translation |
| | Dynamic binary translation differs from simple emulation by eliminating the emulator's main read-decode-execute loop (a major performance bottleneck), paying for this by large overhead during translation time. | | | For example, some parts of the executable may be reachable only through indirect branches[?], whose value is only known at run-time. | | | Code is only translated as it is discovered and when possible, branch instructions are made to point to translated code. |
|
http://www.ebroadcast.com.au/lookup/encyclopedia/bi/Binary_translation.html
(258 words)
|
|
| |
| | Tutorials - Introduction To Dynamic Recompilation |
| | Dynamic recompilation, while certainly not a new concept as evidenced by the number of emulators which successfully employ it, is relatively difficult for many beginners to grasp and then later successfully implemented. | | | This program is merely designed to test our dynamic recompiler implementation and to ensure that we don't have any nasty errors hanging about in the basics of our dynamic recompiler. | | | What this should mean to you is that if you cannot allocate the buffer but your emulator is running in dynamic recompilation mode then you should throw a fatal error and take the whole system down, because as with any critical component if it doesn't work then the system can't function. |
|
http://www.zenogais.net/projects/tutorials/Dynamic%20Recompiler.html
(1227 words)
|
|
| |
| | Method and system for dynamic recompilation of statements of a first language embedded in a program having statements ... |
| | In response to the recompilation conditions, selected statements of the first language are recompiled into new executable instructions during execution of the executable program, and the new executable instructions are respectively associated with the selected statements. | | | In response to the recompilation conditions, selected statements of the first language are recompiled, during execution of the executable program, into new executable instructions. | | | In response to the recompilation conditions, selected statements of the first language are recompiled into new executable instructions during execution of the executable program. |
|
http://www.freepatentsonline.com/6496976.html
(4306 words)
|
|
| |
| | Re: [stella] 2600 emu for GBA |
| | Recompilation involves rewriting the original code so that it can be run on the native processor, without the interpretive overhead (of course, there will be an interpretive element in how graphics are done and such). | | | There are two major schools of emulation, interpretation and recompilation (and two major divisions of recompilation, static and dynamic). | | | You have to understand what's going on in the system (that is, emulate each chip of the original) in either case. |
|
http://www.biglist.com/lists/stella/archives/200106/msg00107.html
(391 words)
|
|
| |
| | GrADS - Runtime Support |
| | Reconfigurable Object Programs and Dynamic Optimization --- A central goal of the research is to define a standard for reconfigurable object programs and construct a dynamic optimizer that will tailor them to a specific target configuration. | | | Previous research on runtime compilation has focused on single computer optimization problems, Work related to dynamic optimization for high-performance distributed applications is only now emerging. | | | The system of performance contracts at the heart of this project will make it possible for real-time monitoring system to cooperate with runtime compilers, ensuring that performance goals are met by detecting performance anomalies during execution and initiating reorganization and optimization of computation to remove them. |
|
http://hipersoft.cs.rice.edu/grads/runtime_description.htm
(1187 words)
|
|
| |
| | HOWTO: Writing a computer emulator |
| | Dynamic recompilation is essentially the same thing as the static one, but it occurs during program execution. | | | For example, you can not statically recompile the self-modifying code, as there is no way to tell what it will become without running it. | | | You can read more on dynamic recompilation in the white paper by Ardi, creators of the recompiling Macintosh emulator. |
|
http://emureview.ztnet.com/developerscorner/Programming/HOWTO.html
(1991 words)
|
|
| |
| | BYTE.com |
| | Recompilation involves copying the PowerPC instructions out of the emulator's code library one at a time and performing postprocessing on the native representation of the hot block. | | | Dynamic recompilation (or DR) offers better efficiencies during emulation by "recompiling" sections of frequently used 680x0 instructions into chunks of native code. | | | The recompiler stows the finished native instruction into the cache buffer, fetches another 680x0 instruction, and continues this process until the hot block's translation is complete. |
|
http://www.byte.com/art/9508/sec13/art1.htm
(1827 words)
|
|
| |
| | Re: GEM v0.7 released! |
| | Dynamic Recompilation is a technique which is also called Binary Code Translation. | | | In Dynamic Recompilation you translate a program piece by piece, during run-time. | | | The translated piece of code is stored in memory so the next time this particular piece of program is executed there's no need for translating it. |
|
http://www.mail-archive.com/msx@stack.nl/msg16399.html
(633 words)
|
|
| |
| | Evolution of a Java just-in-time compiler for IA-32 platforms |
| | We then describe the dynamic optimization framework, in which each optimization performed in the three IRs is mapped to an appropriate optimization level based on the compilation cost and the performance benefit. | | | All of these systems employ dynamic recompilation frameworks by using an interpreter and an optimizing compiler or by using two different compilers in order to focus the expensive optimization efforts only on the hot methods of a program. | | | Instead of a predetermined optimization classification as currently implemented, it is desirable to dynamically select a set of suitable optimizations according to the characteristics of the target method, so that we can apply only those optimizations known to be effective for that method. |
|
http://www.research.ibm.com/journal/rd/485/suganuma.html
(14321 words)
|
|
| |
| | Mobile Threads through First Order Continuations |
| | Supported by lazy code fetching and dynamic recompilation, they have been shown to be an effective framework for implementing mobile agents. | | | This is basically the same mechanism as the one implemented for Java applet code fetching, except that we have also implemented a caching mechanism, at predicate level (predicates are cached as dynamic code on the server to efficiently serve multiple clients). | | | Migrating the state of the computation from one machine or process to another still requires a separate set of tools. |
|
http://www.cs.sfu.ca/fas-info/cs/people/Faculty/Dahl/papers/papers97/tmob/html.html
(4996 words)
|
|
| |
| | Dynamic Recompilation Resources |
| | NEStra is a dynamic recompiling NES emulator for Linux, which is obviously available for different platforms, few documents are available, but full C source code is provided as well as the backend for an x86 platform. | | | The technotes on the DR emulator for PowerMac make a good distinction between interpretive and recompiling emulation, as it follows both approaches for compatability purposes. | | | YAE, an Apple II emulator for Unix, also has a WIP version of a dynamic recompiling CPU core for MIPS and SPARC. |
|
http://acorn.cybervillage.co.uk/emulation/dynrcomp.htm
(882 words)
|
|
| |
| | Profile-guided optimizations for a .NET JIT compiler |
| | Optimizing code generator for the first level of recompilation: The code generator parses the CFG to generate optimized code in a code buffer. | | | We propose to implement profile-guided method inlining, dynamic code and object layout and loop unrolling as part of the multi-level recompilation framework. | | | The research aims at finding ways in which information from such resources can be used in a dynamic recompilation environment. |
|
http://purana.csa.iisc.ernet.in/~kapil/project.htm
(630 words)
|
|
| |
| | Embedded Processor Watch #86; 2/15/2000 |
| | Transmeta's most important accomplishment is combining the concept of dynamic binary recompilation with the inherent efficiency and parallelism of VLIW. | | | Transmeta founder Dave Ditzel shuns the term "emulation," preferring to describe the process of converting x86 instructions into VLIW instructions as "code morphing" or "translation." Sometimes this process is known as dynamic binary recompilation. | | | Transmeta's code-morphing software certainly is more advanced than old-fashioned emulators, but other modern emulators use similar techniques. |
|
http://www.mdronline.com/publications/epw/issues/epw_86.html
(637 words)
|
|
| |
| | Binary Translation |
| | HP Dynamo project is not exactly binary translation, as the source and target architectures are the same, but the techniques used for dynamic code optimization are quite suitable for a dynamic binary translator. | | | If you search for 'dynamic recompilation' and 'dynarec' you will find information about the dynamic binary translators used in the emulation scene (mostly old personal computer systems and video consoles). | | | There was a mail list and a page for console and computer dynamic recompilation but was closed a couple years ago. |
|
http://personals.ac.upc.edu/vmoya/translation.html
(810 words)
|
|
| |
| | Project Petunia pages |
| | Project Petunia is a Motorola 680x0 processor emulation with dynamic recompilation for PowerPC based Amigas. | | | In this case that executable will be emulated via the interpretive emulator as a fallback. | | | Why are there two different emulators (interpretive and dynamic recompiler) included in the system? |
|
http://amigos.amiga.hu/rachy/petunia.html
(1667 words)
|
|
| |
| | [No title] |
| | Instructions for memory movement and jumps are emulated using dynamic recompilation. | | | FPU: All opcodes are emulated except 2 of Dreamcast-specific instructions. | | | Progress Currently, the following parts are emulated: SH4: All opcodes are emulated (I haven't tried them all) with interpretation. |
|
http://www.zophar.net/things/dcemu.txt
(833 words)
|
|
| |
| | Emuscene :: View topic - Flarestorm |
| | I have to admit that it would be interesting if a dynamic recompiler might be even faster, because trying to load precompiled blocks from a database on the harddrive and using the fallback interpreter for everything else has to slow down the emulator, I think. | | | In theory yes, but as I wrote above static recompilation has even more problems than dynamic recompilation (and I haven't even mentioned self-modifying code yet!) and it might even be a waste of time and memory because the translator might process sections of the code that are never executed. | | | It's still better to deal with blocks of code and do the optimizations during the code generation and not afterwards, otherwise you have to keep track of block borders, because you must not optimize anything but basic blocks or you'll change the semantics of the code. |
|
http://forums.emuscene.com/viewtopic.php?p=1305
(3074 words)
|
|
| |
| | Re: GEM v0.7 released! |
| | If by 'developers of free software' you mean PC-people, they will be better of reading the several documents on Dynamic Recompilation on the 'net. | | | As you may have read, GEM is programmed in 100% assembly. | | | With the difference that is only purely has to emulate the x86 CPU. |
|
http://www.mail-archive.com/msx@stack.nl/msg16451.html
(273 words)
|
|
| |
| | About Dynamic Recompilation |
| | Executor was the first emulator that I was aware of the used dynamic recompilation. | | | Emulation right now is doing a form of 'dynamic recompilation' But what Project Reality and Executor are up to is basically a super-optimized version of it. | | | bpoint is a tactician of sorts, and I have no doubt in my mind he can implement dynamic recompilation with fast, and very decent, results. |
|
http://kazzuya.com/wwwboard/messages/2438.php3
(3121 words)
|
|
| |
| | SSF 0.07 Prototype R13 - Emuforums.com |
| | But when dynamic recompiling is used, there is also a software which stops moving, the necessity still to correct may be, is. | | | I guess the big change is the introduction of dynamic recompilation of SH2 instruction handling. | | | DSP,68000 order, VDP2 drawing processing, recreating of CD block and temporary mounting et cetera of dynamic recompiling. |
|
http://forums.ngemu.com/news-comments/60696-ssf-0-07-prototype-r13.html
(367 words)
|
|
| |
| | Java programming language |
| | More sophisticated VMs even use dynamic recompilation, in which the VM can analyze the behavior of the running program and selectively recompile and optimize critical parts of the program. | | | Java's heavy use of heap-allocated objects causes programs to consume more memory than similar programs written in lower-level languages, where data storage can be optimized at a fine granularity. | | | (For instance, long-running programs whose behaviour depends on input data may fall into this category.) It is not unreasonable to suppose that this set of programs will grow as dynamic compilation technology improves. |
|
http://www.php-include.com/Java_programming_language.php
(1890 words)
|
|
| |
| | Programming language - Wikipedia, the free encyclopedia |
| | In MUMPS language this technique is called dynamic recompilation; emulators and other virtual machines exploit this technique for greater performance. | | | There are, broadly, two approaches to execute a program written in a given language. | | | The particular system by which data are organized in a program is the type system of the programming language; the design and study of type systems is known as type theory. |
|
http://en.wikipedia.org/wiki/Programming_language
(1993 words)
|
|
| |
| | dynamic |
| | The idea is to have the program extensible so 'file decoders' can be added to the system without recompiling the main executable (This is an example of the type of thing I want to do, I'm not actually writing a file viewer). | | | I think dynamic languages make it easier to do dynamic recompilation, linking, and the like, because they have more information around at run time in a fairly easy to manipulate form | | | I had to change the string lookup to use symbols but, as you said previously, that would be the better way of doing it anyway. |
|
http://www.fun-principles.info/slot/site/dylan/beta/dylantalks/dynamic.html
(1211 words)
|
|
| |
| | ARMphetamine |
| | This is achieved by using a single register (EBP for those familiar with the IA) as a base pointer to access a block of memory containing register values, the state of processor flags, the current processor mode, information about the virtual machine's memory, and anything else necessary. | | | The aim is to get executable code out of the recompiler as quickly as possible - it probably isn't worthwhile doing any optimisation. | | | My aim is to run user-mode-only code in a flat, unprotected memory space with a high degree of accuracy and speed. |
|
http://armphetamine.sourceforge.net/oldinfo.html
(3108 words)
|
|
| |
| | Self paper: "Third-Generation Self Implementation" |
| | But such systems pay a price for their interactive ness, since they may execute programs several times slower than an optimizing system. | | | Therefore, to achieve good responsiveness, existing exploratory programming environments such as the Smalltalk-80 environment rely on interpretation or non-optimizing dynamic compilation. | | | To our knowledge, SELF- 93 is the first implementation of a pure object-oriented language achieving both good performance and good responsiveness. |
|
http://research.sun.com/self/papers/third-generation.html
(284 words)
|
|
| |
| | The DR Emulator |
| | Developers have been warned not to rely on timing of processor instructions, as exact instruction timings may not be consistent across processors or emulators. | | | It is an addition to the 680x0 emulator shipped with the original PowerMacs. | | | On the DR Emulator, the PC may point to a location before the faulting instruction. |
|
http://developer.apple.com/technotes/pt/pt_39.html
(964 words)
|
|
| |
| | Re: Erlang type system and static vs. dynamic types |
| | But then we must go > through the tedious process of localizing the error and re-building > the program, one type error at a time. | | | (That is, the ability to redefine anything, including types, without loosing execution state because of stopping, relinking and restarting.) And I haven't found that dynamic behavior in the static type languages I've been exposed to in industry. | | | I'm also not comfortable about my program's correctness without knowing which execution paths are not covered by my test suite. |
|
http://www.ai.mit.edu/~gregs/ll1-discuss-archive-html/msg02786.html
(363 words)
|
|
| |
| | Whos-Pardo |
| | Dynamic Optimization Infrastructure and Algorithms for IA-64 (includes discussion of delayed compilation and dynamic translation). | | | The goal of Jalapeno is to expand the frontier of JVM technologies for server nodes --- especially in the areas of dynamic optimized compilation and specialization, scalable exploitation of multiple processors in SMPs, and the use of a JVM as a 7x24 application server. | | | The target system efficiently manages dynamic changes in the source machine storage, accommodating the nature of a preemptive, multitasking source operating system. |
|
http://www.xsim.com/bib/index2.d/Todo-10.html
(10060 words)
|
|
| |
| | Daniel Foesch's Resume |
| | Implementing the AltiVec extension in a dynamic recompiler, using x86 Assembly, and MMX/SSE/SSE2 extensions, also all-around advice, and help to the lead developer, and many new members of the project. | | | Currently implementing the AltiVec extension in a PowerPC dynamic recompiler for the x86 platform for an open-source project | | | An in-depth study of CPU design, with Implementation of a 16-bit pipelined 5-stage CPU |
|
http://www.cs.nmsu.edu/~dfoesch/resume.html
(421 words)
|
|
| |
| | IBM Research Technical Paper Search BOA: The Architecture of a Binary Translation Processor |
| | The data types of the binary translation processor are similar to that of the emulated PowerPC architecture to eliminate data representation issues which could necessitate potentially expensive data format conversion operations. | | | In this work we examine the implications of binary translation on processor architecture and software translation and how we support a very high frequency PowerPC implementation via dynamic binary translation. | | | To achieve these sometimes competing goals, the Binary-translation Optimized Architecture (BOA) aims to bring code translation techniques based on continuous profiling into the mainstream. |
|
http://domino.research.ibm.com/library/cyberdig.nsf/a3807c5b4823c53f85256561006324be/e8b76d4584f90c838525697700536de8?OpenDocument
(392 words)
|
|
| |
| | VOGONS :: View topic - Quick question |
| | Some programs will be slowerin the dynarec than in the interpreter, though, because there will be more thime spent on recompiling the code than on executing it. | | | To run MacOSX in an emulator that runs in Windows, there are two solutions write an interpreter core, or a dynamic recompiler (dynarec) core. | | | I just wanna make sure I know the basic concept of how DosBox works, that way as I stay here longer I can absorb more knowledge in general |
|
http://vogons.zetafleet.com/viewtopic.php?t=6793
(2127 words)
|
|
| |
| | C Board - Dynamic Recompilation |
| | I have the source codes, I just need to find a way to recompile it so that the program reads the code faster and the program will preform better. | | | Anyone know of a site I could learn this or any other ideas? | | | C Board > General Programming Boards > Game Programming > Dynamic Recompilation |
|
http://cboard.cprogramming.com/archive/index.php/t-49068.html
(175 words)
|
|
| |
| | DataPower: XSLJIT High Performance XSLT Compiler |
| | That means that static compilation (where XSL files are compiled to shared libraries, DLL's, executables or source files) is not the best option - developer intervention is required anytime an XSL file changes or needs to be moved to a different platform. | | | DataPower has broken the limitations of general purpose solutions with the introduction of XSLJIT, the industry's first and only software compiler for XML processing. | | | XSLJIT is a patent-pending process that dynamically generates machine code at runtime to process XML at speeds not possible with general software. |
|
http://www.datapower.com/solutions/xsljit.html
(889 words)
|
|
| |
| | WinMac! |
| | I have also been working of a 68040 emulator for the initial release of the binary emulator however I may stop development on that and start work on a PPC one. | | | WinMac presents Mac programs with a Windows look and feel. | | | A Dynamic Link library for Windows that will allow Mac programs to be compiled and run as native Windows programs. |
|
http://www.geocities.com/SiliconValley/Park/6558/winmac.htm
(429 words)
|
|
| |
| | University of Alberta CMPUT605-JIT |
| | March 06: Thin Guards: A Simple and Effective Technique for Reducing Penalty of Dynamic Class Loading by Mathew Arnold and Barbara Ryder, ECCOP 2002. | | | March 11: (Maria) An Empirical Study of Selective Optimization by Matthew Arnold, Michael Hind and Barbara G. Ryder, LCPC 2000. | | | The effective compile time analysis and optimization of Java programs, requires that the compiler uses a register-based intermediate representation of the program. |
|
http://www.cs.ualberta.ca/~amaral/courses/605-jit
(443 words)
|
|
| |
| | Cxbx, The Xbox Emulator -> Progress |
| | This means there is no need for DynaRec (Dynamic Recompilation), which saves alot of CPU and RAM. | | | Emulators such as UltraHLE and Project64 have proven that High Level Emulation is a really great way to achieve high performance. | | | Since the Xbox uses an Intel Pentium processor, a large percentage of the code (most importantly, the code that tends to eat up the CPU) can be executed directly. |
|
http://www.caustik.com/cxbx/progress.htm
(854 words)
|
|
| |
| | Dynamic SQL is faster. |
| | exec sp_somename @CSV = '1,2,3' If I build the SQL statement in the SP and then execute the statement dynamically: EXEC ('SELECT * FROM table1,... | | | > > exec sp_somename @CSV = '1,2,3' > > > If I build the SQL statement in the SP and then execute the statement > dynamically: > EXEC ('SELECT * FROM table1,... | | | Point is using this CSV param dynamically in a SP is much faster than breaking CSV param down into a temp table/variable or using a table returning function. |
|
http://www.codecomments.com/message443617.html
(1566 words)
|
|
| |
| | Language interpretation - Wikipedia |
| | Just-in-time dynamic recompilation of a programming language, such as that used in an emulator, parallels this process. | | | This page was last modified 17:28, 9 December 2001. | | | With simultaneous interpretation, the interpreter, using headphones to listen to the speaker, voices the translation into a microphone immediately. |
|
http://nostalgia.wikipedia.org/wiki/Language_interpretation
(129 words)
|
|
| |
| | [No title] |
| | MIPS processors are emulated using either a simple binary translation layer ("recompilation"), which is used on Alpha and i386 hosts, or by traditional interpretation (very very slow, but works on any host platform). | | | ARM and PowerPC processors are emulated using a newer dynamic translation system. | | | Performance is somewhere between traditional interpretation and dynamic recompilation; however, the dynamic translation system used in GXemul does NOT require platform-specific back-end code. |
|
http://gavare.se/gxemul/gxemul-stable/RELEASE
(913 words)
|
|
| |
| | Edit and Continue |
| | With Functional Developer 2.0 it is possible to do what is commonly called 'Edit and Continue' of a program that you are debugging. | | | This means you can pause a running program in the debugger, edit method definitions, frames, or any part of the program, and dynamically recompile those changes into the running program. | | | You can then continue the program from where it was paused and it will use the new definitions. |
|
http://www.double.co.nz/dylan/tips/editandcontinue.htm
(381 words)
|
|
| |
| | Jamon |
| | Jamon is general-use in the sense that it can produce any arbitrary text output format (for contrast, Enhydra XMLC and | | | Templates are compiled into Java and then into bytecode, and are referred to in application code just like any other Java class. | | | This dynamic recompilation can be turned off for production deployment. |
|
http://www.jamon.org/Features.html
(225 words)
|
|
|
