TLB Miss is the core process of memory management in MIPS. In the previous article on MIPS, TLB miss related principles, this article focuses on the Linux kernel code implementation. TLB Refill Initialization
In the kernel boot process, the TLB refill exception is initialized and the corresponding processing interface is set. The main processes are as follows (take r3k as an example):
Start_secondary
per_
The program operation effect chart is as follows:
This article directory:
1. Introduction
2. Simple Requirements Analysis
3. Core function implementation
4. Interface and use
5. Test
1. Introduction:
1.1 Experimental Requirements:
1) Read in interactively or from a file (enter the filename suffix. mips) input a part of MIPS assembler, choose different execution mode, can give the program in the
Explanation of the MIPS architecture Linux trojan for vromips
Most Windows operating systems are installed on PCs of individual users, while Linux systems are widely used on servers. Therefore, Linux systems have fewer Trojans than Windows systems. Due to the application limitations of the MIPS architecture, Linux trojans on the MIPS architecture are rare.
Recent
64-bit multi-core MIPS exception and interrupt kernel code analysis (4)
1.3 initialization of other exception entries
The entry for other exceptions is initialized:
[ARCH/MIPS/kernel/traps. C]
Void _ init trap_init ()
{
......
/** Copy the generic exception handlers to their final destination.* This will be overriden later as suitable for a participant* Configuration.*/Set_handler (0x180, except_vec3_gene
Tags: lin use gdb arc inux stack with file systemHow to run/debug binary arm/mips architecture on a Linux host
Original link [email protected]The binary used in this paper is from the Add,typo two questions of PWN on Jarvis OJ.
The main purpose of this tutorial is to make the PWN of other system architectures, so the first step is to set up the environment, search online a wave, found a lot of tutorials are need Raspberry Pi, chip and ot
Http://blogold.chinaunix.net/u1/40363/showart_434187.htmlchapter II register conventions
For the development of a CPU, it is very important to master the register conventions of the CPU in which it works.
The MIPS architecture provides 32 GPR (general purpose register ). The usage of these 32 registers is roughly as follows:
REGISTER NAME USAGE$0 $ zero constant 0 (constant value 0)$2-$3 $ v0-$ return value of v1 function call (values for results and
Armeabi armeabi-v7a mips x86 understanding, armeabiarmeabi-v7aIntroduction
Armeabi, armeabi-v7a, mips, x86 how to understand?
ABI: indicates the instruction set based on which the application is compiled. ABI has four types: armeabi, armeabi-v7a, mips, and x86, which indicate the cpu type.
Armeabi default options,
Supports ARM * v5TE-based devices
Supports soft f
/**************************************************************************************
Mips-elf's cross compilation environment originates from an article in the network, but I can't find the source. At the same time, after my
Some modifications, and finally I successfully configured this cross compilation environment in Slackware 12.0 Linux. As for
Other versions of Linux I believe should be able to compile successfully, but I will be in other Linu
Work needs. We are going to port uboot on MIPS for two days. Now we can record the environment setup method as follows:
1. Prepare the compilation toolUboot MIPS part using mips_4kc-gcc compilation, so can not use the GNU development package MIPS-elf-GCC under cygwin, mainly because uboot using the GP pointer, when MIPS
Note: Ubuntu does not support MIPS processors and can only be installed and run under x86.First step, install QEMU
sudo apt-get install Qemu qemu-system.The Qemu-system-mips--version discovery version is too low because later QEMU requires a later version. Download http://wiki.qemu-project.org/download/qemu-2.1.2.tar.bz2, then unzip, perform make, this step takes a long time, and make install
I. Environment
1. Linux kernel of the Development Board: 2.6.28.10
2.3G wireless network adapter: Huawei E303 (vendorid: 12d1 productid: 14fe)
Ii. related software:
1.usb-modeswitch-1.1.7.tar: USB device Working Mode Conversion Tool
2.usb-modeswitch-data-20110227.tar: used to configure usb_modeswitch.conf
3.libusb-1.0.8.tar: provides a set of system APIs for usb_modeswitch.
4.libusb-compat-0.1.3.tar: compatible with version 1.0 and 0.1
Iii. Description:
1. Pay attention to parameter settings
"Original" http://blog.csdn.net/gubenpeiyuan/article/details/7895469Because it is necessary to compile the program locally and run it on the embedded system, the compiler needs to be installed locally, and the main requirement is MIPSEL-LINUX-GCC.Before always thought can use Apt-get install find, results find for a long time to find, found or have to make up their own.1. EnvironmentSystem: Ubuntu 16.04Software: BuildRootThe software can compile the C compiler for
First, the structure1.ARM Architecture2.x86 Architecture3.Mips ArchitectureTwo, 3 difference three, how to compile 64-bit so file in AndroidIf you are compiling Android code under Linux, there could be two reasons:1. The lunch command has 32-bit and 64-bit differences, note that the command to compile 64-bit so2. The Mk file has Local_module_path values such as $ (target_out_shared_libraries)/HW instead of local_module_relative_path: = HW, The latter
Reprinted please describe the link to this article
1.download qt-embedded-linux-opensource-src-4.5.2.tar.bz2
: Http://get.qtsoftware.com/qt/source/
Qt-embedded-linux-opensource-src-4.5.2.tar.bz2
2. Configuration
./Configure-Prefix/opt/qt-4.5.2-embedded MIPS-no-OpenGL-QT-mouse-tslib
Because I have already compiled all the required libraries, I will not describe them here.
The configuration result is as follows:
Build... libs examples demos docs tran
Read a lot of articles, or said to use opkg to install Python, or to say that the millet router cross-compiling, there is no mini. Learned this article (http://me.deepgully.com/post/5638916786880512), compiled the Xiaomi Route mini Python.Compiled: http://download.csdn.net/detail/kowity/9611919Xiaomi routing mini version of the route is MIPS, and Millet routing arm version is not the same, so the script made some changes. First download the Xiaomi rou
step will put the generated library and so on in the configuration of the time this inside--prefix=/opt/libcurl-lib should be the source package that the need to copy into this areaSecond, the above said the need to rely on the library OpenSSL library, let's compile OpenSSL together.SOURCE Package openssl-1.0.1u.tar.gzFirst of all, why did not choose to compare the new version, because I used a lot of versions, makefile are different for reference blog http://blog.csdn.net/clirus/article/detail
is very slow and not recommended.
3. In fact, I just installed a Ubuntu 9.04 in VMWare, and then download the compiled open-wrt toolchain to decompress it, You can directly compile the http://www.dd-wrt.com/dd-wrtv2/downloads/others/sourcecode/toolchains/gcc.3.4.4-broadcom-mipsel.tar.bz2
4. Install the MIPS simulator
Sudo apt-get install qemu
Qemu-mipsel-L/home/steeven/work/dd-wrt/home/dd-wrt/whiterussian/openwrt/staging_dir_mipsel/test
On my Ubuntu
Hello everyone:As a software developer, I'm sure everyone has thought about the question: Why is the performance of the native Godson processor so different from Intel's processor performance in the same period? Why is domestic open source software development far less than abroad? ------is our software developer's own lack of literacy? Or is it the hardware performance of the original homemade processor? I graduated with the Chinese Academy of Science and Technology Research Institute Godson La
(1) If-OS-g is used at the same time, only-OS takes effect.
(2) mips support delay slot, see: http://blog.csdn.net/dogsun88/article/details/7437178
For example:
854f8: 0320f809 jalr t9854fc: 02202021 move a0, s1
The last time the sub-function is called, the next sentence is to assign s1 to a0. In fact, before calling the sub-function, move a0 and s1 also take effect.
If the-O0 method is used for compilation, the latency slot is not enabled. For examp
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