annoying marks such as loading, network exception, and network timeout on the webpage, i'm afraid I can only bury myself in the sky. However, the depressing speed of the turtle's network is getting faster. With the active promotion of the three major operators, fiber optics will be fully popularized and bandwidth will be improved, which will undoubtedly bring a spring breeze to users, but another frustrating problem is that your vro is still stuck when the bandwidth goes up?
When the bandwidth
Porting MTD-utils toolkit-tutorial
For MTD-utils transplantation, cross-compilation is performed on the Ubuntu server 10.04 platform and transplanted to embedded Linux. The correct steps for cross-compilation are as follows, it is not guaranteed to run properly in other environments. The following is the compiling environment:
Build: Ubuntu server 10.04HOST: Linux version 2.6.32.15-15-sigmaCross Compiler: MIPS-Linux-GNU-GCC version: 4.3.2CPU:
frustrating problem is that your vro is still stuck when the bandwidth goes up?
When the bandwidth is increased, but the processing speed of the router is still stopped, it will become one of the main bottlenecks of the enterprise network and directly affect the operating quality of the enterprise network. With the development of technology, Gigabit Routers have emerged. Not only does LANToLAN achieve Gigabit forwarding, but WANToLAN can also achieve gigabit speed. This high-performance router
Porting Environment Utuntu 15.041. MPlayer TransplantVersion: Mplayer-export-snapshot.tar.bz2/mplayer-export-2015-11-26Linux PC platform:./configure make make installDependent software: Yasm2. Yasm TransplantVersion: yasm-1.3.0Linux PC platform:./configure make make installMipsel Platform:++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++1. QT CompilationVersion qt-embedded-linux-opensource-src-4.5.3The difference between MIPS and Mi
Reference document: auw._datasheet.pdf, ml2010-0129.pdf (Meiling project circuit diagram), s29gl064n90tfi04 flash Datasheet
The above is the structure/interface of the Au1200 SOC, where the upper left corner is the mips32 core (au1 core), and other modules are the peripheral controllers on various SOC chips, all these in-chip modules are connected and communicated through the system bus and peripheral bus in the SOC.
As a typical cpu Of The mips32 architecture, au1 core features comply wi
The latest version of Strobe provides a more comprehensive view of DB2. With Compuware's rich understanding of DB2 products and long-term experience, strobe and iStrobe also play a key role in effectively controlling MIPS usage and identifying possible cost savings.
Compuware configurationnasdaq: CPWR) provides a series of enhanced improvements to its Strobe 4.1 and iStrobe 4.1 products, helping customers save costs by increasing their visibility into
MIPs: million instructions executed per secondDmips: dhrystone million instructions executed per secondMflops: million floating-point operations per secondMIPs, dmips, and mflops are common CPU performance evaluation criteria. Note that MIPs is only suitable for evaluating scalar machines, while mflops is more suitable for measuring the performance of vector machines.1. MIPSHow many million commands are exe
, gaining commercial success and occupying a larger share of the mid-low market. Its main characteristics are as follows: Using 90 process, density up to 74880 logic units, maximum system clock is 340MHz, with special multiplier, nuclear power pressure 1.2V, port voltage 3.3V, 2.5V, 1.2V, support 24 I/O Standard , up to 520k of distributed ram and 1872k of Block RAM, with on-chip clock Management module (DCM), with embedded Xtrema DSP function, can perform 330 billion times per second
illustration of how recursion solves a complex problem by translating it into smaller problems. The following is a small example to illustrate the principle of recursion.
/**
* @fileName Test.java
* @description??????????
* @date 2012-11-25
* @time 17:30
* @author WST
/public class Test {
static int multiply (int n) {
int factorial; // ??
if ((n = = 1) | | (n = = 0)) {
factorial = n;
} else {
factorial = n *
MOVQBX, 0x10(SP) CALLruntime.memmove(SB)
Why was that first movq there? Why not just:
SHLQ$0x3, AX MOVQAX, 0x10(SP) CALLruntime.memmove(SB)
Another example:why do an expensive multiply operation:
IMULQ$0x10, R8, R8
Instead of a shift operation, which is cheap:
SHLQ$0x4, R8
(tty_major, 1 );
However, when compiling the kernel, it is strange to say undefined reset_terminal.
/Usr/bin/MIPS-Linux-LD-G 0-static-t arch/MIPS/lD. Script ARCH/MIPS/kernel/head. oARCH/MIPS/kernel/init_task.o init/Main. O init/version. O init/do_mounts.o -- start-groupARCH/MIPS
Based on MIPS architecture, this paper analyzes the linux-3.3.8
I. Kernel entrance
First, find the portal of kernel through a link script.
1. The kernel is compressed
/arch/mips/boot/compressed/makefile $ (obj)/head.o $ (obj)/decompress.o $ (obj)/dbg.o $ (obj)/piggy.o link to Vmlinuz, Link script for Ld.script vmlinuz: $ (SRC)/ld.script $ (vmlinuzobjs-y) $ (obj)/calc_vmlinuz_load_addr $ (call Cmd,zld) $ (ca
Compile source code times wrong:
/opt/toolchains/uclibc-crosstools-gcc-4.2.3-3/usr/bin/.. /lib/gcc/mips-linux-uclibc/4.2.3/.. /.. /.. /.. /mips-linux-uclibc/bin/ld:cannot Find-lrvsip
The original is radv did not compile, Librvsip.a also did not generate.
CD RADV
Make
Make install
At this point librvsip.a to build, everything else seems to be normal.
There are still errors when compiling the total source
By Falcon 2008-01-13
If you want to develop loongson software without a Development Board, you can use its virtual machine gxemul (for loongson) to emulate. However, the latest gxemul that supports loongson is 0.4.3 and only supports loongson 2E. In addition, the network support is not good enough. Next we will introduce how to simulate a loongson basic software development environment through gxemul on the Ubuntu system on the X86 platform.
1. Introduction
Loongson [1] is a high-performance, lo
Now we can use the tool chain provided by Android ndk in the form of an independent compiler! This is useful if you already have your own build system.
A typical application scenario is to call a 'configure 'script dependent on the CC environment variable open source library for cross-platform compilation.
This document explains how to do that.1. Select your tool chain:
First, you need to determine whether your independent toolchain targets the target CPU architecture, which is an ARM-based dev
, we'll analyze the implementation of __SWAB32, the essence is in this function.But before this first consider a problem, for different CPUs, such as Arm MIPS PPC, how to choose to use Little_endian.h or big_endian.h it.The answer is, for different processor platforms, there are arch/xxx/include/asm/byteorder.h header files, to see what arm MIPS PPC Byteorder.h respectively.Arch/arm/include/asm/byteorder.h
-windows.zip
109928336 bytes
37b1a2576f28752fcc09e1b9c07e3f14
Mac OS X (Intel)
Android-ndk-r8-darwin-x86.tar.bz2
96650992 bytes
81ce5de731f945692123b377afe0bad9
Linux 32/64-bit (x86)
Android-ndk-r8-linux-x86.tar.bz2
88310791 bytes
5c9afc9695ad67c61f82fbf896803c05
Revisions
The sections below provide information and notes about successive releases ofthe ndk, as denoted by revision number.Android ndk, revision 8
(May 1, 2012)
This release of the ndk
Author: Falcon
Copy Link
By Falcon 2009-03-31
[I almost had to write a long article (I wrote two sections in E). I thought about it, but I copied it directly from weekreport and sorted it out.]
Recently, the Linux real-time extension patch rt_preempt has been transplanted to the loongson2f platform. Now it is basically finished. Here is a summary.
I. porting process
The porting process is as follows (serial numbers are generally promoted, but some may be cross-parallel ):
0. Search for loongson
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