8051 instruction set

4. Data shuffling Instruction Set UnpckhpsXMM, XMM/m128 The source memory and destination register are 64-bitDouble-CharacterThe result is sent to the destination register. The memory variables must be 16 bytes aligned with the memory.High 64-bit | low 64-bitDestination register: A0 | A1 | A2 | A3Source memory: B0 | B1 | B2 | B3Destination register result: B0 | A0 | B1 | A1Example:When xmm0 = 0x 0c517e0

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 constant

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

ARM microprocessor instruction set Overview The arm instruction set is load/storage-type. That is to say, the instruction set can only process the data in the register, and the processing results must be put back into the registe

Shimen the main contribution, respect the work of the author, please do not reprint.If the article is helpful to you, you are welcome to donate to the author, support the Shimen, donate the amount at random, ^_^I want to donate: Click DonateCocos2d-x source Download: Dot I teleportbefore each version of the IPA package is out of the 20M, and later do not know from which version rather basketball package will be nearly 40M each time, but there is no significant increase in the project of third-pa

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.

scratchpad and requires multiple instructions to complete, so, from a performance consideration, do not use this type of instruction in the inner layer loop. (R0: = R1: = r2: = R3: = *p)._mm_loadh_pi and _MM_LOADL_PI are respectively used to load from a combination of two parameter high-bottom bytes. Specific reference manuals._mm_loadr_ps indicates that loading in _MM_LOAD_PS reverse order requires more than one

1)The ARM processor has a 37+3 32-bit register: 32 General-purpose registers with only one PC pointer register, which is generally used to point to the instruction being taken, rather than the instruction being executed. (Here are the pipelining of ARM processors, described below), seven status registers: But only one CPSR register (to represent the current program State Register), 6 SPSR registers (to hold

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

I. Arm Instruction Set 1. Redirect command: B, BL (with return), blx, and Bx (with status) 2. Data Transmission: mov (Universal storage zone), MVN (bitwise inversion), CMP (CPSR exists in comparison results), and TST (bitwise), add, sub, And, Orr, Bic, Mul, 3. Access status registers: MSR and Mrs Ii. assembly instruction sets 1. LDR, STR (B) 2. STR, 3. LDM and ST

instance method, the object reference will be stored at Location0 before the remaining parameters are stored. The size of the local variable table is determined by the compile time, and also depends on the number of local variables and the size of some methods. The action stack is a (LIFO) stack that is used to press in and out of values, and the size is also determined at compile time. Some opcode instructions push the value into the stack, and the remaining opcode instructions take the operan

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

of commands and the clauses are independent of each other (such parallel execution is invisible to programmers, except for performance improvement ). The ALU clause contains. [x, y, z, w] and Alu. trans) commands for executing operations, including setting and using assertions, and pixel kill (see section 4.8.1 ). The texture fetch clause contains commands that execute textures and read constants from memory. The vertex fetch clause is used to obtain vertex data from the memory. A system withou

Application of AVX Instruction Set in Btrfs Each time a new X86 processor is released, a new instruction set with two interfaces is added. AVX is one of the new instruction sets that have been introduced and continuously improved over the past two years. Unfortunately, most

I. Instruction classification and format of microprocessorARM's unhandled instruction set can be divided into jump instructions, data processing instructions, program status register (PSR) processing instructions, load/store instructions, coprocessor directives and exception generation instruction 6 categories, specifi

When compiling the SSE optimization instruction with Qtcreator, the following error occurred. Inlining failed in call to Always_inline ' __m128i _mm_packus_epi32 (__m128i, __m128i) ': Target specific option mismatch_MM_PACKUS_EPI32 (__m128i __x, __m128i __y)^The reason for this error is that the corresponding SSE option was not specified at compile time.Workaround: Locate the SSE instruction

originally requires a specific class parameter is changed to a function that requires a specific interface as a parameter, then all objects that implement the interface can be passed as parameters to it, so that objects that are unrelated to each other can be treated similarly. http://www.cnblogs.com/meryw/Short-term front-end treatment may rise, but small program development threshold is lower (lower than the front-end), there is a developer is wage-oriented programming, with the flow of devel

Work often encounter crash problem, if it is debug version, have source code, that is OK, debugging information more. In case release to QA even customers, and then found crash and other problems, if not familiar with arm instructions, do not understand the scene, that debugging up can be laborious. Often can only go around to guess, I believe we have had this sad experience.This time relatively busy, just use up for the introduction of ARM instruction