nasm assembler

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C + + embedded Assembler improves computational efficiency

As assembly language is closer to the hardware level than C + +, it is often possible to take the form of embedded assembly in C + + code to speed up the program in high performance requirements.In the VC can be simple through__asm{//Add assembly code here}to achieve. The following is a very simple example of the performance gap between Assembly cross-compilation and direct C + + code, with the following code and running results:#include If you are in a complex program, the difference in perform

Starting from the simplest Win32 Assembler, helloworld

Starting from the simplest Win32 Assembler, helloworld Write by nine days Yan Ling (jtianling) -- blog.csdn.net/vagrxie Discuss newsgroups and documents Since I started to get plug-ins, my personal goal has been very clear. I took this opportunity to re-learn Win32 compilation. I bought a book and started to learn about it because of the urgency of C ++ learning, I gave up... This is almost the same as the learning process of python in the past .....

Jack's first Win32 Assembler helloworld

This article has been updated. Please refer to the new articleBasic Win32 Assembly knowledge compiled by Jack Http://blog.csdn.net/magus_yang/archive/2007/04/05/1552930.aspx Title: Jack's first Win32 Assembler helloworldOperator: Jack Yang time: link: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>; part 1: schema and source program format definition statement. 386; instruction set. model flat, stdcall; working mode option Casemap: n

Hello world advanced assembler series [transferred from KingofCoders]

Hello world advanced assembler Series Title *** Hello, world advanced program selection branch by lluct *** Data Segment; define data segmentsMsg1 dB '*** welcome to my program by lluct ***', '$'; Defines the first string of the output. The string must be defined in dB, and $ indicates the end mark.Msg2 dB '1: basic message 2: Advanced message', '$'; Define output string information: Select menuMsg3 dB 'Please choose: ',' $'; Define the output string

"Hello World"--The first assembler program

Hello World This is the first simplest program of every programming language, and the following program is the Hello World of assembly language. To learn to compile for a period of time, until now to record their first compilation program notes. Although this is a fairly simple small program, but this is a beginning, with the beginning, the future of their own notes may be updated more frequently.Assembly (x86) 12345678910111213141516171819 stack segment stack ' stack ' D

Call the address of the class member function directly (address of class member function with assembler, different vs version)

::foo1); GETMEMBERFUNCADDR_VC6 (Tt2_foo2,Tt2::foo2); GETMEMBERFUNCADDR_VC6 (Tt2_foo3,Tt2::foo3); TT1 x; Tt2 y; Callmemberfunc (0, Tt1_foo3,x,0);//Tt1::foo3Callmemberfunc (0, Tt2_foo1,x,0);//tt2::foo1 = Tt1::foo1Callmemberfunc (0, Tt2_foo2,x,0);//Tt2::foo2Callmemberfunc (0, Tt2_foo3,x,0);//Tt2::foo3Callmemberfunc (0, Tt1_foo3,y,0);//Tt1::foo3Callmemberfunc (0, Tt2_foo1,y,0);//tt2::foo1 = Tt1::foo1Callmemberfunc (0, Tt2_foo2,y,0);//Tt2::foo2Callmemberfunc (0, Tt2_foo3,y,0);//Tt2::foo3}intMai

1. Preprocessor, compiler, assembler and linker

analysis, also known as the source program analysis, the analysis process found that there are grammatical errors, give the prompt information. (4). LINK (LD): GCC will go to the system's default search path "/usr/lib" to find, that is, linked to the Libc.so.6 library function . function library is generally divided into static library and dynamic library two kinds . Static library refers to the compilation of links, the library files of the code are all added to the executable file, so th

"Intel Assembler 5th Edition" Assembly Call sub-procedure

I. Call and RET directives  Second, in the sub-process, you need to save the value of the register may be modified, here you can use the uses pseudo-directive to generate  Compilation example of a city array summation  1TITLEPagera Proc Demo2INCLUDE Irvine32.Inc3 includelib Irvine32.lib4 includelib Kernel32.lib5 includelib User32.lib6 7 8 . Data9 Array DWORD 1000h,2000h,3000h,4000hTen One . Code A - ;--------------------------------------------------- - ; the ;Calcute The sum of an array of 32

Compilation subtraction procedure for the 5th edition of Intel Assembler

The first step:Installing virtual machines 32-bit XP system + RADASM softwareStep Two:Download the relevant source code and library files in the 5th edition of the Intel assembly language Program design http://kipirvine.com/asm/examples/index.htm will download IrvineExamplesVS2008, extract the INC And Lib files are placed in the Radasm directory Note: If the path cannot be found, the compilation error will prompt you,C:\radasm\masm32\bin\ml. exe/c/coff/cp/nologo/i"C:\RadASM\Masm32\Include""tests

Compiler, assembler, Linker, Loader

Most computers use a 8-bit block (known as Byte byte) as the smallest addressable memory unit, rather than accessing individual bits in memory. The program treats the memory as a very large byte array called the virtual memory (virtural memories). Each byte of the memory is marked by a unique number, called its address, and the set of all possible addresses is called the virtual address space.This virtual address space is just a conceptual image, and the actual implementation is shown in chapter

First Win32 Assembler Program development steps

1. Download and install the MASM, download the Nmake.exe tool, and place the Namake.exe under the bin of the MASM installation directory.2. Write a batch file for setting environment variables Var.bat (put to the MASM root directory) The contents of the file are as follows:@echo offREM Modify the following MASM32DIR environment variables according to the installation directory of the MASM32 software package!Set Masm32dir=d:\masm32Set include=%masm32dir%\include;%include%Set lib=%masm32dir%\lib;%

On-site protection and recovery using stacks in assembler

The following program is available:MOV ah,2MOV dl,13int 21hSee the above program is called the int 21来 output hex 13.So, if the main program calls directly like this:MOV ax,1MOV dx,1The code above callSub ax,1Sub dx,1It can be seen that AX,DX initialization is 1, then although the program can be executed successfully, but to call the sentence below is no longer the value of our main program, because the subroutine is the above output 13 of the code to change the value of ax and DX.Stack is a spe

Error understanding of Call printf parameter stack in assembler

,%EBX - int$0x80Expected output:Value is:12345678Value is:5678Result output:Value is:12345678Value Is:12At first thought is the 0x12345678 of the highest byte 0x12 transferred to the CX inside, feel quite strange, obviously use is MOVW, to wrong is also 0x1234, analysis, the original is printf mischief, function call, its return value is usually stored in the eax inside to pass, And the first printf output: value is:12345678 has exactly 0x12,18 characters (with ' \ n '), so after the code ex

Using assembler to analyze the memory distribution of C code

Using disassembly in the ARM platform to analyze C memory Distribution: arm: Use the arm-linux-objdump command to disassemble the Elf file after the compilation is completed. Then redirect to the Tmp.s file. The first step is the following C file. Vim tmp.c#includeUsing assembler to analyze the memory distribution of C code

Byteplay-Python bytecode Assembler-disassembler-Google Project hosting

Byteplay-Python bytecode Assembler-disassembler-Google Project hosting Byteplay lets you convert Python code objects into equivalent objects which are easy to play with, and lets you convert those objects back into living Python code objects. it's useful for applying crazy transformations on Python functions, and is also useful in learning Python byte code intricacies. check the documentation to see it in action! Byteplay was written by Noam yor

How to invoke an assembler _c language in TC2.0

enter the values of each element of the array, invoke the assembly code to obtain the maximum value of the and the maximum position in the array */ #include Void Main () { extern found (int i,int*j,int *k,int *s); int i,j,k,s[10]; printf ("Enter Values of array:/n"); for (i=0;i scanf ("%d", s[i]); i=10; found (i,j,k,s); printf ("/nthe max_value is:%d/n", j); printf ("The Place is:%d/n", K); } 2, write the following assembler co

Compare with Intel Assembler style

Original address: http://oss.org.cn/kernel-book/ch02/2.6.1.htm ----------- Comparison of 2.6.1 and Intel assembly language We know that Linux is a member of the Unix family, and although the history of Linux is not long, many of the things associated with it originate from UNIX. In terms of the 386 assembly language used by Linux, it also originated from UNIX. UNIX was originally developed for PDP-11, and has been ported to the VAX and 68000 series processors, and the assembly language on these

ARM Assembler Instruction Set

value, not an absolute address, and its Values are computed by the assembler (relative addressing in the reference addressing method). It is a 24-bit signed number, the left two-bit symbol expands to 32-bit, and the valid offset is 26 bits (the address space of the front and back 32MB). The following directives:# The program unconditionally jumps to the label label to execute B Label; When the z-condition code is set in the #当CPSR register, the prog

GDB Debug Assembler Stack Process analysis

Tags: generating color oschina alt OSC reg Tree int DebugClick to view CodeAnalysisUse gcc -g example.c -o example -m32 instructions to generate a 32-bit assembly on a 64-bit machine gdb example , and then use the instructions to enter the GDB debugger. After entering, set a breakpoint at the main function, run again, use disassemble the instructions to get the assembly code, and use i(info) r(registers) the instructions to see the values of each register: The stack base of the main

GDB Debug Assembler Stack Process analysis

complete. Here is the corresponding tableBottom: 0x0bfffefec stack top: 0x08048413Feelings:In the study of the fourth Chapter P239 page is detailed, this time GDB analysis is to use GDB debugging to consolidate the knowledge learned through this practice, the stack frame grasp has been quite solid, thank Lou Teacher.Problem:When the main function will be assigned to the base site%EBP,%esp immediately reduce the 0x10, which is why, I think about it is not possible to open up variable storage spa

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