8087 coprocessor

Label: Use Ar data sp c on R ad BSAdd the following commands/* Start icache */MRC P15, 0, R0, C1, C0, 0 // read control RegORR r0, R0, #(1 MCR P15, 0, R0, C1, C0, 0 // write it back1. The MRC command transfers the value in the coprocessor register to the ARM Processor register. If the coprocessor fails to perform this operation, an undefined command exception is interrupted.2. Orr performs logic or operatio

the RC6 algorithm processor, which assists the computer processor in performing encryption and decryption operations, so that you can conveniently analyze and study encryption and decryption. Therefore, this chip can be viewed as a coprocessor. 1 RC6 Algorithm1.1 RC6 algorithm Overview RC6 adheres to RC5's simple design and extensive use of data-related circular shift ideas, while enhancing its ability to defend against attacks, this improves the num

Quick Start to TI's codec Engine Favorites Http://focus.ti.com.cn/cn/general/docs/gencontent.tsp? Contentid = 61575 Cui Jing, General DSP Technology Application Engineer, Texas Instruments semiconductor technology (Shanghai) Co., Ltd. Texas Instruments (TI)'s first da Vinci (DaVinci) chip (processor) dm6446 has been around for nearly three years. Following dm644x, TI has successively launched a series of multimedia processing platforms, such as dm643x, dm35x, dm6467, and omap353x. Many engineers

Source http://blog.csdn.net/wojiwoye/archive/2010/04/16/5491624.aspx I would like to thank wojiwoye, but it seems that he has also reprinted it. The original author of this article cannot find it... sorry ~ Type of abnormal interruption in arm: Abnormal interrupt name Description Reset (reset) When the reset pin of the processor is valid, a reset exception interrupt occurs, and the program jumps to the reset exception interrupt handler for execution. Reset exception in

All functions in the math_emulate.c program can be divided into three parts: the first class is the interface function math_emulate () of the exception handler that does not exist on the device, only this function; the second type is the main function do_emu () for floating point instruction simulation and processing, and there is only one function. In addition, all the functions are simulation-assisted functions, including the functions in other C language programs.In a PC that does not contain

Implement Hbase paging and Hbase Paging Author: Source of R xingyue: http://www.cnblogs.com/rxingyue. You are welcome to reprint it. Please keep this statement. Thank you! In a project, hbase paging is performed because the data volume is large and scheduled incremental analysis is required. The version used in the project is hbase1.1. Need to enable coprocessor Aggregation 1. Start global aggregation to manipulate data on all tables. By modifying the

between this and sequential execution? The key lies in the yield function. If it takes cpu time or waits for a resource in sequence, the program will be stuck in this place and cannot move forward. The emergence of a collaboration program is to allow the threads waiting for resources to let out the resources and perform operations on the next collaboration program. Yield can be suspended when an error occurs and resumed the next time. 2. Several statuses of collaboration Pending state: When a c

When I read head. S, I encountered the following commands: Lead: http://www.oldlinux.org/oldlinux/viewthread.php? Tid = 5829 These two are related to the 80x87 math coprocessor instruction.Finit sends initialization commands to coprocessorIt places the coprocessor in a known State not affected by previous operations and sets its control word to default value, clear state word, and all floating point sta

From: http://hi.baidu.com/gcc_sky/blog/item/083a8934ebc3cef43c6d975d.html The MCR command transfers data from the ARM processor registers to the coprocessor registers. If the coprocessor fails to perform this operation, an undefined command exception is interrupted. Syntax format of the command: MCR { Mcr2 P15, 0, The MRC command transfers the value in the

a:hbase> delete ' T1 ', ' R1 ', ' C1 ', Ts1 also has a deleteall command, you can do the whole line of the scope of the deletion operation, use caution!If you need to do a full table delete operation, use the TRUNCATE command, in fact, there is no direct full table Delete command, this command is also disable,drop,create three command combination. (6) Modify table structure disable ' scores 'Alter ' scores ',name=> ' info 'The Enable ' scores ' ALTER command uses the following (if not successfu

filtering and anti-virus functions, and network Processor limited by its computing power, these functions can only rely on coprocessor to achieve. From the cost of future products, a network of processors in the price of about 300 or 400 dollars, if the need for coprocessor, but also the cost of coprocessor. In the early stage of ASIC, if the FPGA (Field program

follows: Hbase> Alter ' t1′, NAME => ' f1′, method => ' delete ' Hbase> alter ' t1′, ' delete ' => ' f1′ C, you can also modify table properties such as Max_filesize Memstore_flushsize, READONLY, and Deferred_log_flush: Hbase> Alter ' t1′, method => ' Table_att ', max_filesize => ' 134217728′ D, you can add a table to collaborate with the processor Hbase> Alter ' t1′, method => ' Table_att ', ' coprocessor ' => ' arg1=1,arg2=2′ A

This article mainly introduces the introduction of Python's gevent framework, sample code based on the python2.x version, the need for friends can refer to the following Python provides basic support for the coprocessor through yield, but not completely. Third-party gevent provides a more complete support for Python. Gevent is the third party library, through the Greenlet implementation of the process, the basic idea is: When a greenlet encounters

process by arranging the order of IP addresses stored in DNS. Sorting is done based on several metrics that test the health of specific sites that correspond to an IP address. Network processorNetwork Processor (network Processor) is a programmable device, which is applied to various tasks in the field of communication, such as packet processing, protocol analysis, routing lookup, Voice/data aggregation, firewall, QoS, etc.Network processor devices are usually composed of several microcode proc

almost no article about how to do this thing. The GDB code was turned over and no hardware breakpoints were seen in arm (the GDB version used was too old). Later a multi-party search, find some information, recorded in the following: 1. In the ARM's architecture document (available for download on ARM's website), Cortext A8, A9, A15 support hardware breakpoints (CP14), DBGWCR and Jtag with coprocessor DBGWVR Operation Debug Register Watchpoint and pr

consists of four processor generations that implement the ARM architecture V6. Its extensions include a series of simd dsp commands that use 16-bit or 8-bit data values in 32-bit registers as operation objects. ARM1136J-S and ARM1136JF-SThe processor uses arm jazelle technology. It implements the virtual memory system architecture and has the AMBA 2 AHB interface. It supports the arm Instruction Set and the original thumb instruction set. The ARM1136JF-S processor has a floating point

ienumerator as a parameter to only wait for the end of the thread and cannot terminate it at any time (unless you use the stopallcoroutines ); in addition, when the string is used as a parameter, only one parameter can be passed when the thread is enabled, and the performance consumption will be greater, and ienumerator is used.As a parameter, there is no such restriction. In unity3d, stopcoroutine (string methodname) is used to terminate a collaboration program, and stopallcoroutines () is use

comparison jump instruction);bgeza1、Bgeza11、bltza1、Bltza11(If you need, these instructions are the original machine instructions for the conditional function call); 　　 Breakpoints and trap directives: Break(Produces an exception of type "Breakpoint");SDBBP(GenerateEJTAGException breakpoint instruction);Syscall(produces a convention for the type of exception used by the system call);Teq、Teqi、Tge、Tgei、TGEIU、Tgeu、TLT、Tlti、Tltiu、Tltu、Tne、Tnei(Conditional exception instruction, a condition test for

The MCR instruction arm data register is transmitted to the coprocessor register. Assume that the coprocessor cannot run the operation successfully. An undefined instruction abort is generated.Grammar teaching Format:Mcr{MCR2 P15, 0, Of For the CP15 coprocessor, The MRC instruction transfers the value of the coprocessor's registers to the registers of the ARM pro

the rest of the go to the new OS thread. All of this is done by runtime, and our programmers don't have to worry about these complicated details, just take advantage of the simple API that Go provides to handle concurrency. The Go process communicates through channels. The channel prevents the risk of race condition when multiple threads are accessing shared memory. A channel can be imagined as a conduit for communication between multiple processes. We'll cover the channel in the next tutori