how to multiply in mips

/little_endian.h, as follows:#define __LE32_TO_CPU (x) ((__force __u32) (__LE32) (x))It is equivalent to doing nothing. For big-endian processors, in./include/linux/byteorder/big_endian.h, as follows:#define __LE32_TO_CPU (x) __swab32 ((__force __u32) (__LE32) (x))the literal meaning can also be seen, __swab32 realize data rollover. Wait, 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

Original website: http://blog.csdn.net/akatope/article/details/6506101bootloader introduction of embedded Linux system SupportLinuxBootloader more, the development to 2010, there have been some inevitable results, some bootloader have disappeared, someBootloaderReplaced, some bootloader were merged, some, although in development, have retreated to a remote corner. Now for the mainstream or the application of a little broad bootloader do an introduction.GRUB/GRUB2:Grub is primarily targeted at t

Support Linux bootloader More, developed into the 2010, there have been some inevitable results, some bootloader has disappeared, some bootloader have been replaced, some bootloader were merged, some although in development, But has retreated to a remote corner. Now let's introduce a bootloader of mainstream or application.GRUB/GRUB2:Grub is mainly for the x86 series processor bootloader, while supporting the server-level Powerpc/mips processor, once

Looks like kernel ignored Bootargs. The code is located in the Build_dir...arch/mips/ralink PROM.C static __init void Prom_init_cmdline (int argc, char **argv) { int i; Manfeel, mod to pr_info from Pr_debug Pr_info ("prom:fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n", (unsigned int) fw_arg0, (unsigned int) fw_arg1, (unsigned int) fw_arg2, (unsigned int) fw_arg3); ARGC = fw_arg0; argv = (char

For oprofile porting, cross-compilation is performed on the Ubuntu Server 10.04 platform and transplanted to Android. After practice, the following steps are correct for cross-compilation, which cannot be properly run in other environments, the following is the compilation environment: build: Ubuntu Server 10.04 host: Android-2.2r2cross compiler: mips-linux-gnu-gcc version: 4.3.2cpu: mips cross-compiled opr

One:CISC (Complex instruction Set computer) complex instruction computer CISC is the basic processing part of a desktop computer system, and the core of each microprocessor is the circuit that runs the instruction. A command consists of multiple steps to complete a task, transferring the value into a register, or adding an operation. CISC is a microprocessor that executes a complete set of computer instructions, originated in the 80 's MIPS mainframe

correctly.Definition of some CPU identifiers:Intel i386 0x14cIntel i860 0x14dMIPs r300 0x162MIPs r400 0x166DEC Alpha AXP 0x184Power PC 0x1f0 (little endian)Motorola 68000 0x268Pa Proteus 0x290 (precision Architecture)# Define image_file_machine_unknown 0# Define image_file_machine_i386 0x014c // The intel 386.# Define image_file_machine_r3000 0x0162 // MIPS little-Endian, 0x160 big-Endian# Define image_file_machine_r4000 0x0166 //

Reference http://cgxcn.blog.163.com/blog/static/132312422009101133251202/ Reference:http://blog.chinaunix.net/uid-14833587-id-76499.html Reference:http://lixuefeng26.blog.sohu.com/204383842.html The principle is:uboot the parameters to be passed, save to a specified physical location, and then Linux obtains the data from that physical location1. First take a look at the parameter passing process of Uboot: A The first two structures are described: Boot/u-boot/include/asm-

but you need to presse Y while the package ask what Not the press RETURN. A new "Apt-get Update" is also necessary. The really best is now apt-get dist-upgrade to install all packages related to FFmpeg. for Jessie (Stable) amd64, Armel, ARMHF, i386, KFREEBSD-AMD64, Kfreebsd-i386, MIPS, Mipsel and PowerPC packages Add in Your/etc/apt/sources.list Non-free are for i386 and AMD64 arches only. Deb http://www.deb-multimedia.org Jessie main Non-free

------------"> $ log(Time runspec -- size = train -- noreportable -- iterations = 1 $ APP)> $ TMP 2> $ logDone# Running with ref DatasetEcho '================= running with ref dataset ================================='> $ logFor app in $ appsDoEcho "-------------- testing: $ app ------------"> $ log(Time runspec -- size = ref -- noreportable -- iterations = 1 $ APP)> $ TMP 2> $ logDoneRm $ TMP For us, we are working on a simulator project, so we need to useSpec2000To test the performance

age_file_machine_r3000 0x0162//MIPS Little-endian, 0x160 big-endian#define image_file_machine_r4000 0x0166//MIPS Little-endian#define image_file_machine_r10000 0x0168//MIPS Little-endian#define IMAGE_ File_machine_wcemipsv2 0x0169//MIPS Little-endian WCE v2#define image_file_machine_alpha 0x0184//

IMAGE_FILE_DLL 0x2000 // File is a DLL. important # define IMAGE_FILE_UP_SYSTEM_ONLY 0x4000 // File shoshould only be run on a UP machine # define IMAGE_FILE_BYTES_REVERSED_HI 0x8000 // Bytes of machine word are reversed. # define IMAGE_FILE_MACHINE_UNKNOWN 0 # define IMAGE_FILE_MACHINE_I386 0x014c // Intel 386.32 bits # define IMAGE_FILE_MACHINE_R3000 0x0162 // MIPS little-endian, 0x160 big-endian # define IMAGE_FILE_MACHINE_R4000 0x0166 //

RX ISR to traverse packets describing token (reap). Some places call BD(Buffer descriptor), because it is hardware specific, so developers generally do not need to modify H/W descriptor data structure. The address of the DMA descriptor array hw_desc[] is the virtual address of the DMA map, which describes the token base site and needs to be configured in the relevant DMA registers of the SOC chip, such as the Ar9331datasheet DMARXDESCR (Pointer to Rx descrpitor) and dmatxdescr_q0 (descriptor ad

C #7.0 new feature 1: Based on Tuple's "multiple" return value method, This article is based on the Issue in the Roslyn project: #347. Review First, let's raise a question: in C #, how can we make a method return "multiple" return values? Let's review the practices of C #6.0 and earlier. In C #, we usually have the following four methods to make a method return multiple data records. Use KeyValue combination 1 static void Main (string [] args) 2 {3 int int1 = 15; 4 int int2 = 25; 5 var

are on or insid E The circle.Sample Input3-2 0 0-2 2 0 2-2-2 0 0-2 2 0 0 2-2 0 0-2 2 0 1 1　　Sample Outputacceptedrejectedrejected　Just enter the coordinates of three points to P1 (x1,y1) P2 (x2,y2) P3 (x3,y3) a=x1*x1+y1*y1 b=x2*x2+y2*y2c=x3*x3+y3*y3g= (y3-y2) *x1+ (y1-y3) * x2+ (Y2-y1) *x3x= ((b-c) *y1+ (c-a) *y2+ (A-B) *y3)/(2*g) y= ((c-b) *x1+ (a-c) *x2+ (b-a) *x3)/(2*G)　　Import Java.math.bigdecimal;import Java.util.scanner;public class Main {public static void main (string[] args) {

We have seen how to load and store data with neon,And how to handle the leftovers resulting fromVector processing. Let us move on to doing some useful data processing-multiplying matrices.Matrices In this post, we will look at how to efficiently multiply four-by-four matrices together, an operation frequently used in the world of 3DGraphics. We will assume that the matrices are stored in memory in column-MajorOrder-this is the format used by OpenGL-es

// Intel 386.#define IMAGE_FILE_MACHINE_R3000 0x0162 // MIPS little-endian, 0x160 big-endian#define IMAGE_FILE_MACHINE_R4000 0x0166 // MIPS little-endian#define IMAGE_FILE_MACHINE_R10000 0x0168 // MIPS little-endian#define IMAGE_FILE_MACHINE_WCEMIPSV2 0x0169 // MIPS litt

SizeOfOptionalHeader; // size of the IMAGE_OPTIONAL_HEADER32 Structure+ 16 h WORD Characteristics; // file attributes} IMAGE_FILE_HEADER, * PIMAGE_FILE_HEADER;The Machine represents the CPU type, which is defined in windows. h.# Define IMAGE_FILE_MACHINE_UNKNOWN 0# Define IMAGE_FILE_MACHINE_I386 0x014c // The Intel 386.# Define IMAGE_FILE_MACHINE_R3000 0x0162 // MIPS little-endian, 0x160 big-endian# Define IMAGE_FILE_MACHINE_R4000 0x0166 //

Image_file_header This structure is defined as follows: TypeDefstruct_image_file_header {00h WORD machine; //Operating Platform02h WORD numberofsections;//Number of blocks06h DWORD TimeDateStamp;//file date time stamp0Ah DWORD pointertosymboltable;//point to Symbol table0Eh DWORD Numberofsymbols;//number of symbols in the symbol table12h WORD Sizeofoptionalheader;//the size of the image's optional header structure 22414h WORD characteristics;//file characteristic values} image_file_header, *Pima

;IMAGE_OPTIONAL_HEADER OptionalHeader;If e_lfanew points to a NE Signature instead of PE Signature, it indicates a Win16 NE executable file. If it is LE Signature, it indicates a VxD document. For the LX Signatrue table OS/2 document.The IMAGE_FILE_HEADER structure is as follows:DWORD Machine; indicates the type of CPU used, which can be found in Winnt. h (My header file is defined as follows)# Define IMAGE_FILE_MACHINE_UNKNOWN 0# Define image_file_machine_i386 0x014c // The intel 386.# Define i