mips variables

Because ECOs needs MIPS-elf-GCC to compile the kernel, the GCC compiler of the latest gcc4.4.1 version is compiled today. The steps are as follows: First, you must export the following variables before compiling: Export target = MIPS-elf Export prefix =/usr/local/$ Target Export Path = $ path: $ prefix/bin Echo $ Target Echo $ prefix Echo $ path ===============

Some problems encountered during the compilation of MIPS-Based C language compiler programs, mips Compiler When I used Java to write a C-(simplified C Language) compiler, I encountered a long problem: After testing C-code input and executing parser and typechecking, A complete MIPS code is successfully compiled. However, when the

Http://blog.yaabou.com /? P = 96 Note that MIPs has the pipeline visibility, so the next command following the jump command will be executed before the jump is executed. This is called Branch latency. However, the compiler hides this feature, but you can set ". Set noreorder" to disable the compiler from reorganizing the code order. Each Board has its own lDs file. This is mainly used to describe the instructions generated by the compilation and the

limited color to make the nodes in the graph different colors.The color problem is an exponential function of the graph size. Some heuristic algorithms generate almost linear time distribution. In global allocation, if 16 General registers are used for integer variables, Additional registers are used for Floating PointGraph Coloring works well. Graph Coloring does not work well when there are few register numbers.Q: Since there cannot be less than 16

From: http://www.kernelchina.org /? Q = node/273 In the mips architecture, a maximum of four co-processors are supported ). Cp0 must be implemented in the architecture. It controls the CPU. MMU, exception handling, multiplication and division, and other functions depend on the cp0 of the coprocessor. It is one of the essence of MIPS and opens the door to the MIPs

macro definitions: leaf and end. Their definitions in MIPS/ASM. h are as follows: # Define leaf (name )/ . Text ;/ . Globl name ;/ . Ent name ;/ Name: Leaf is used to define a simple subfunction (simple subroutine). If a function does not call other functions in the body, it is relative to the entire call tree, this function is called a piece of "leaf" on the tree, so it is named "leaf ". Relatively, a function that needs to call other functions is c

In order to compile the program on the computer composition and design-hardware/software interface, however, GCC on UbuntuX86 can only be compiled into the X86 assembly. Sourcery codebench out a gcc toolchain for compiling to the MIPS assembler. Our usual compilation, called Local compilation, is compiled into a compilation under the current platform. Instead, cross-compilation can be compiled into other platforms (the platform of the compiled platfor

Using JavaScript to simulate MIPS multiplication, mips Multiplication This example describes how to simulate MIPS multiplication in JavaScript. Share it with you for your reference. The details are as follows: I hope this article will help you design javascript programs.

is used. Generally, this parameter is not considered.MIPs has developed the ultimate version of SMP Linux, called smtc (thread context Symmetric Multi-processing) Linux.Smtc Linux can understand the concept of lightweight TC and reduce some overhead related to SMP Linux.----------------------------Ptr_la T0, _ bss_start # Clear. BSSLong_s zero, (t0)Ptr_la T1, _ bss_stop-longsize1:Ptr_addiu T0, longsizeLong_s zero, (t0)BNE T0, T1, 1BClear the BSS segment and clear 0.

memory. $4 .. $7 :( $ A0-$ A3) is used to pass the first four parameters to the subroutine. Stack is not enough. A0-a3 and v0-v1 along with Ra to support subroutines/processes To pass parameters, return results, and store return addresses. When more registers are required, a stack is required) The MIPs compiler always leaves space for parameters in the stack to prevent the storage of parameters. $8 .. $15 :( $ T0-$ T7) Temporary registers, which

Thank you so much http://blog.h5min.cn/ajianyingxiaoqinghan/article/details/70194392 http://blog.h5min.cn/zdyueguanyun/article/details/51322295 http://blog.csdn.net/tgww88/article/details/51393570 1, zlib of the cross-compilation: ./configure--prefix= $OPENCV _depend 1 1 After that, the makefile file is modified and the contents are as follows: cc=mips-linux-gnu-gcc Ldshared=mips-linux-gnu-gcc-s

return it, the MIPS range has about stored in the CPU register, and the corresponding memory location remains undefined when the two registers are not sufficient When the return value is placed, the compiler completes it through memory. $4..$7: ($a 0-$a 3) is used to pass the first four parameters to the subroutine, not enough to use the stack. A0-a3 and V0-v1 together with RA to support subroutines/procedures Called, respectively, to pass parameters

too large, it exceeds the range that GP can access as a base pointer. Not all compilation and running systems support the use of GP. * SP: the upper and lower of the stack pointer must be displayed using commands. Therefore, MIPS generally only entersThe pointer of the stack is adjusted only when the stack exits. This is achieved through the called subfunction. SP is usually adjusted to thisThe lowest stack required by the called sub-function, so tha

We have recently established a cross-tool chain for the MIPs K processor: HOST: PC (32-bit) Virtual Machine: virtualbox Linux: CentOS-5.2 Target machine: Development Board with mips k Processor Linux version and package: linux-mti-2.6.35.9-2.tar.gz Cross tool chain: Mips-4.4-303-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2

Http://blogold.chinaunix.net/u1/40363/showart_434186.htmlchapter I MIPS CPU Architecture Overview Chen Huai Lin 1. Preface This article introduces the MIPS architecture, focusing on its register conventions, MMU and storage management, exception and interrupt handling, and so on. Through this article, we hope to provide a basic concept of contour for readers who are interested in

I will upload my new book, "Write My Own processor" (not yet published), today is the third article. I try four articles a week.MIPS instruction set architecture since the advent of the 80 's. has been upgrading, from the initial MIPS I to MIPS V, to support the expansion module MIPS32, MIPS64 series, and integrated code compression technology microMIPS32, microMIPS64. Each

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

the process of writing and debugging. And because this part of the content is very stable, once successfully run, there is little need to modify. No need to change, who will go to see it. 2 context switching is a processor-related process, the so-called context is generally referred to as the CPU registers, and each processor register is different, the switching action is not the same, this article takes MIPS as an example to explain. 3 Embedded appl

Structure and long design cycle. (7) user use:ProcessorSimple structure, regular instructions, easy to grasp, easy to learn and use; CISC microProcessorComplex Structure, powerful functions, and easy to implement special functions. (8) Application Scope: due to the determination of the Proteus command system and the specific application fields, it is more suitable for dedicated machines, while CISC is more suitable for general machines. Ii. x86, arm, MIPSArchitecture X86, arm, and

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