mips assembly

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Resolve mips-openwrt-linux-uclibc-g++.bin:environment variable "Staging_dir" not defined__linux

After OpenWrt compiles the tool chain and SDK, you may have the following error: zchx@zchx-system-product-name:~$ mips-openwrt-linux-g++ mips-openwrt-linux-uclibc-g++.bin:environment Variable " Staging_dir "Not defined The solution is simple, that is, compile the SDK also choose to compile, in the compiled SDK, including the tool chain. The tool chain here will not be an error. Good time.Zchx@zchx-system-p

Mips TLB Miss implementation in Linux__linux

), when the TLB refill exception occurs, the hardware automatically jumps to the ebase corresponding address execution. * * memcpy (void *) Ebase, Tlb_handler, 0x80); ... } It can be seen that the TLB refill exception processing function code, is the kernel dynamic settings, rather than the assembly of static code, due to the MIPS hardware model more, so the operation more flexible. Also, note that the

Go The problem of non-aligned access under MIPS

mips0\n\t": "=m" (* (ROW)): "R" (row+4): "$8", "$9", "$");}int main (){printf ("---------------------------------------------------------\ n");printf ("Testing Godson2 unaligned access instruction \ n");printf ("---------------------------------------------------------\ n");Sysmips (mips_fixade, 0);Unaligned_access (data);printf ("Result is:0x%04x%04x%04x%04x\n", data[3], data[2], data[1], data[0]);}After the program runs, the system prompts "illegal instructions" and exits.CISC (such as x86),

MIPS platform Android transplant process record 2_kernel upgrade (2.6.29.4-3.0.72)

This part of the record is kernel upgrade, before on the FPGA ran 2.6.29 kernel to verify the function of some IP.The source code for Android from Google's website is not part of the kernel, and kernel needs to be downloaded separately.A version of 3.0.72 was found after downloading from Google.So the record here is the process of kernel upgrading from 2.6.29.4 to 3.0.72.The first idea is to find a 3.0 on the MIPS architecture of the config file, and

MIPS five-level integer pipelined simulation system

simulation execution mode: There is advance circuit mode, no advance circuit mode; 5 implement four different transfer processing strategies: Pipeline removal, prediction success, unsuccessful prediction transfer, delay transfer. (Note that pipeline cleanup and prediction success is the same on the MIPS integer assembly line) 1.2 Overall Description: The basic program is in the

Godson obtained MIPS patent authorization will support Android

"NetEase technology News" June 16, the Chinese self-developed CPU godson recently obtained MIPS authorization. MIPS Technologies Monday, the Institute of Computing Technology of the Chinese Academy of Sciences (MIPS32) has obtained the authorization of the MIPS64 architecture, which will be used to develop the godson CPU. The pain of the godson, card at the patent gateway "The godson's supporters hope one

Comparison between ARM and MIPS platforms

Tags: des blog Io ar OS use SP for div 1. pipeline structure Pipeline-MIPs is one of the simplest architectures, so the university prefers to choose mips architecture to introduce the computing architecture course.-Arm has Barrel ShifterShifter has two sides. On the one hand, it can improve the speed of mathematical logic operations, and on the other hand, it also increases the complexity of hardware. The

The legendary evolution of MIPS architecture

2014-10-21 Imagination Tech MIPS is a shining star in high efficiency, low-power CPU design principles and has been in the mobile and embedded industries for nearly 30 years. This article will quickly explore the evolution of the MIPS architecture and describe how it evolved from the earliest version of Stanford University's Computational Science lab to the current architecture.

Comparison between ARM and MIPS platforms

1. pipeline structure Pipeline-MIPs is one of the simplest architectures, so the university prefers to choose mips architecture to introduce the computing architecture course.-Arm has Barrel ShifterShifter has two sides. On the one hand, it can improve the speed of mathematical logic operations, and on the other hand, it also increases the complexity of hardware. Therefore, it is more efficient than adder/s

Compiling Android for MIPS

You may have heard about Google TV that is coming soon in our homes, through Android set-top boxes. it's expected to come out this fall, but the source code of the MIPs port is already available to the public. it is important to note that android was originally designed for smartphones, which commonly use arm processors. however, in the set-top box market, MIPS-based systems are quite popular. this is why t

Misp version of embedded QT compilation appears MIPS-LINUX-GCC command not found

There's nothing wrong with configure.My configure is:./configure-prefix/opt/qt-jz-xplatform qws/linux-mips-g++-embedded MIPSConfigure passed, but when make, there was mips-linux-gcc:commond not fount!I'm MIPSL-LINUX-GCC, and I've cross-compiled a Hello world.The errors that occur when make are:MAKE[1]: Entering directory '/root/desktop/download/qt-jz/src/corelib 'mips

Step by step build mips-linux-gcc-4.4.0 cross-compile tool

http://blog.sina.com.cn/circlewood2010 Step by step build mips-linux-gcc-4.4.0 Cross compile tool First, the preparatory work:Working environment: Host: ubuntu10.04 linux-2.6.32-24-generic i686 gcc-4.4.3Target machine: MIPS32Package version: binutils-2.19.1gcc-4.4.0glibc-2.9linux-2.6.29.1gmp-4.3.0mpfr-2.4.2Glibc-2.9-libgcc_eh-1.patchglibc-ports-2.9Working Directory:---Home|---crosstool|---bin//store the final executable file and Lib|---headers|---

MIPS ABI N32

The ABI is the abbreviation for the application Binary interface, which identifies the operating mode of the processor and the encoding format of the specification target file. The MIPS instruction set architecture formally supports the 64-bit mode of operation since MIPS3, so the code can follow O32 (o meaning old), N32 (n meaning new) and N64 Abi. O32 and N64 are pure 32-bit and 64-bit modes, which, in addition to the length difference

Download the MIPs GCC tool chain used by Sigma smp8654

My colleagues who have developed Sigma smp8654 have noticed this. The following URLs of the MIPs GCC tool chain Used In SDK 3.11 are invalid. Http://www.codesourcery.com/gnu_toolchains/mips/portal/package3546/public/mips-linux-gnu/mips-4.3-51-mips-linux-gnu-i686-pc-linux-gn

Build MIPS cross-compilation environment __linux under Linux Linux

Build MIPS cross-compiling environment under Ubuntu Cost Dickens, finally put MIPS cross compilation environment built. Next share this article with you, the method inside is I personally tried, absolutely easy to use. Thank you for the blogger who wrote this article. MIPS is a RISC processor architecture, similar to the x86,arm and so on, today we introduce h

Ubuntu Installation MIPS platform cross-compilation environment

Add the following update source at the end of the/etc/apt/sources.list file: Deb Http://ftp.de.debian.org/debian Squeeze MainDeb Http://www.emdebian.org/debian/squeeze Main To perform a command installation:sudo apt-get updatesudo apt-get install emdebian-archive-keyringsudo apt-get install Linux-libc-dev-mips-crosssudo apt-get install Libc6-mips-cross Libc6-dev-mips

Linux Context Switching Analysis Notes (MIPS) __linux

1. Kernel stack Switching (MIPS) When a dispatch switches to a process, the *KERNELSP is set based on the value of the task_struct->thread_info (the bottom of the kernel stack of the process currently running), and the value is Thread_info + thread_size-32 (MIPS, using SET_SAVED_SP macros). 2. Exception, interrupt register Save (MIPS) When using Save_some to

Mips TLB Miss exception

The recent analysis of the implementation of Godson KVM, by the way and coarse look at the manual of MIPS, with the main KVM-related modules include: CPU Virtualization memory Virtualization of IO The current godson on the CPU virtualization and the standard kernel difference is small, need hardware and software with support, the current godson overall can support. Kernel virtualization is the key to the Godson KVM scheme, which directly determines th

x86, ARM, and MIPS

  The instruction set can be divided into complex instruction set (CISC) and thin instruction set (RISC) two parts, representing the architecture are x86 (CISC),ARM and MIPS (RISC)respectively.arm- RISC is a chip system designed to improve processor speed, and its key technology is to complete multiple instructions in a single clock cycle. Compared with the complex instruction set CISC, the instruction set of the ARM instruction sets with RISC archite

Learning embedded Linux (iii)--mips bottom-up development with QEMU

When learning, how to toss all the line. Or you want to debug the Uboot first, familiar with the MIPS START process, and then go to Win7 to try to write a few small programs.---------------Linux below:sudo DNF install glibc.i686Then go to https://sourcery.mentor.com/GNUToolchain/release3136, download a MIPS-ELF-GCCInstallation:./mips-2015.11-33-

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