cpuid instruction

[Switch] iOS lame compilation arm64 armv7s armv7 x86_64 i386 instruction set, arm64armv7s Original to http://blog.csdn.net/vieri_ch/article/details/40650467 Recently upgraded the system to Mac OS X 10.10 and updated XCode6.1 and iOS 8.1. The libmp 3lame. a static library used by the app also supports 64-bit simulators (x86_64) and 64-bit real machine (arm64) instruction sets. Need to be re-compiled After re

Friends who are familiar with HTML know that HTML has many attributes. For example, the href attribute of the The ANGULARJS directive is used to extend HTML. These are the special attributes from the ng-prefix first. We will discuss the following instructions: Common ANGULARJS directives The ng-app instruction Initializes a ANGULARJS application. The ng-init instruction initializes the application data

Sometimes too many instructions will cause errors, the problem of mixing, so this article in memory will be interspersed with the memory of the way, cross ratio, not easy to make mistakes. This article is mainly about six instructions: V-if//v-show//v-else//v-for//v-bind//v-on 1. v-if Conditional rendering instruction, judging whether the element is rendered according to the bool value of the subsequent expression; eg Html: Js:

Code: #include Cat/proc/cpuinfo gives Code: pprocessor:0 Vendor_id:genuineintel CPU Family:6 model name : Genuine Intel (R) CPU T2300 @ 1.66GHz stepping:8 CPU mhz:1662.543 Cache size:20 KB fdiv_bug:no hlt_bug:no f00f_bug:no coma_bug:no fpu:yes fpu_except Ion:yes cpuid level:10 wp:yes flags:fpu vme de PSE TSC MSR PAE MCE cx8 APIC Sep MTRR PGE MCA cm OV Pat Clflush DTS ACPI MMX FXSR SSE SSE2 SS TM Pbe constant_tsc up Arch_perfmon BTS pni monit

Instruction Set changes1. Address width and operand width prefixIn 64-Bit mode, the default address width is 64-bit, and the default operand width is 32-bit. The prefix of address width and operand width allows 32-bit and 64-bit data and addresses to be mixed in the instruction sequence. The following table (1-7) shows the width of the directive prefix address that is required in IA-32e mode. Note: In 64-Bi

SSE technology OverviewIntel's single-instruction, multi-data stream extension (SSE, Streaming SIMD Extensions) technology can effectively enhance the capabilities of CPU floating point operations. Visual Studio. NET 2003 provides support for SSE instruction set programming, allowing you to directly use SSE commands without writing assembly code in C ++ code. The topic of SSE Technology in MSDN [1] may conf

From the original to http://blog.csdn.net/vieri_ch/article/details/40650467Recently upgraded the system to Mac OS X 10.10 and updated XCode6.1 and iOS 8.1The Libmp3lame.a static library used in the previous app also supports the 64-bit simulator (x86_64) and the 64-bit true machine (arm64) instruction set. Need to recompileReview the following information, follow the steps below, and make some comments and changes1.http://sourceforge.net/projects/lame

4-byte aligned arm instructions ???? Rules: offset = (Jump address-(instruction address +8))/4Reason:instruction address + 8: The actual value of the PC is a+8, because arm's pipeline makes the instruction execute to the current instruction.Jump command-get address in previous step : Get the difference between the jump instruction and the current PC.÷4: Beca

MMX Technology OverviewIntel's MMX #8482; (multimedia enhancement instruction set) technology can greatly improve application processing capabilities for 2D and 3D graphics and images. Intel MMX technology can be used for complex processing of large amounts of data and complex arrays. The basic units of data that can be processed using MMX technology can be byte, word ), or double-word ).Visual Studio. NET 2003 provides support for MMX

There are currently several instruction sets for iOS: ARMv6 Iphone IPhone2 Iphone3g First generation and second generation ipod Touch ARMv7 IPhone4 Iphone4s armv7s IPhone5 iphone5c Arm64 IPhone5S The machine's support for the instruction set is backwards compatible, so the armv7

Hou sisong compiled a very good article titled single-instruction multi-data stream computing (SIMD) in advanced languages. I will further sort out the content so that it can be accepted more easily. We know that the instruction set architecture of traditional computers mainly implements basic functions such as arithmetic logic computing, conditional branch, and I/O access. However, in many fields, these ba

Features:Load/Store Structure (memory operations only include load and store, and all other operations are completed in registers)32-Bit fixed instruction width3. Address Instruction format (both source operands and result registers are specified independently)Each Command is executed in a condition.A normal operation and a normal ALU operation can be completed simultaneously in a single

The failed core stack looks like this:Program terminated with signal sigill, illegal instruction.#0 0X00000000036A3FDD inchrte_cpu_get_flag_enabled () [Current thread is 1(Thread0x7fc26fda21a0(LWP10988) ] (gdb) bt#0 0X00000000036A3FDD inchrte_cpu_get_flag_enabled () #1 0x0000000003694f4e inchrte_hash_crc_init_alg () #2 0x000000000388074f inch__libc_csu_init () #3 0x00007fc26df6092e inch__libc_start_main () from/lib64/libc.so.6#4 0x0000000000bec9

I. Definition of directivesFor instructions, it can be simply understood as a function that runs on a particular DOM element, and the instruction extends the functionality of the element.Let's start with a complete sample of the parameters to describe in detail the function and usage of each parameter:Angular.module (' myApp '), []). Directive (' Mydirective ',function() { return{restrict:string, Priority:number, Terminal:boolean, template:string

Linux First bullet 1. Learning of basic Instructions ls-all lists all hidden files and related file attributes Date shows current system timeFormat output:Date +%y/%m/%d 2018/04/13Date +%h:%m 11:17 echo $LANG View the current language and character encoding formatIf we need to change the language of the English language familyThen: Lang=en_us 4 instructions for displaying the calendar calcal [Month][year]Cal 2018 shows calendar of the yearCal 04 2018 shows the April 2018 calendar 5. Calcul

Summary: Although the JMP Directive provides control over transfers, it does not allow any complex judgments to be made. The 80x86 conditional jump instruction provides this kind of judgment.Conditional jump directives are essential elements for creating loops and implementing other conditional execution statements, such as IF...ENDIF. The conditional jump command checks one or more flag bits to determine if they match a particular condition (like the

Does the REP;NOP command execute multiple NOP or 1 NOP? Originally, adding the rep prefix is the rep instruction until the ECX value is 0. In the kernel code, as in the Spin_lock implementation, you will see REP;NOP such a statement, it is easy to think of the execution of multiple NOP. But in fact it is not so. Look at the demo program below: #include #define NOPS (Times) __asm__ __volatile__ ("Rep;nop": "=c" (Result): "C" (Times)) #define MOVSTR (

mov and add instructions Assembly Instructions Control what the CPU is doing Formal syntax description mov ax, 18 Send 18 to Ax (AX) =18 mov Ah, 78 Send 78 to AH (AH) =78 Add Ax, 8 Add 8 to the value in AX (AX) = (AX) +8 MOV ax, bx Send data in BX to AX (AX) = (BX) Add ax, BX Add ax, BX content, results into Microsoft Dynamics AX (AX)

Complex Instruction Set computers(CISC) In the long term, the improvement of computer performance is often achieved by increasing the complexity of hardware. with the integrated circuit technology. in particular, the rapid development of the very large scale integrated circuits technology, in order to facilitate software programming and improve the speed of program operation, hardware engineers are constantly adding instructions that can implement com

ARM instruction Set-SWP directivesSWP and SWPB are the atomic operations of a storage unit in an arm instruction set, that is, one-time reading of the storage unit and non-segmentation. The SWP and SWPB respectively complete a single word (32bit) and one byte (8bit) of data exchange between the memory and the register.The SWP instruction mainly completes the sync