What does the 'and' instruction do to the operands in assembly …
2018年12月4日 · The instruction and performs bit-wise AND operation on its operands. For example the instruction and al, bl should compute the AND operation on the register al and bl (as illustrated by @Serkratos121) and store the result in al register.
What does the dollar sign ($) mean in x86 assembly when …
2012年4月28日 · NASM supports two special tokens in expressions, allowing calculations to involve the current assembly position: the $ and $$ tokens. $ evaluates to the assembly position at the beginning of the line containing the expression; so you can code an infinite loop using JMP $.
Just finished learning x86 assembly language. What can I do with it ...
2014年1月29日 · If you're already a developer in a higher-level programming language, assembly language allows you to create optimized routines/functions. I don't know about the others, but Delphi, for instance, allows you to perfectly integrate assembly code into any unit, and takes care of the function parameters etc.
Assembly difference between [var], and var - Stack Overflow
2017年3月2日 · in assembly, it's equivalent to *variable in C. That is, treat variable as a pointer and dereference that pointer — get the value the the pointer is pointing to. Similarly, the 'type identifiers' are like casting the pointer to a different type:
Assembly code vs Machine code vs Object code? - Stack Overflow
2009年1月21日 · "An assembly language is a low-level language for programming computers. It implements a symbolic representation of the numeric machine codes and other constants needed to program a particular CPU architecture." Machine code is discussed here.
x86 - Assembly - JG/JNLE/JL/JNGE after CMP - Stack Overflow
2012年3月8日 · I don't understand the JG/JNLE/JL/JNGE instructions, which come after CMP. for example, If I have: CMP al,dl jg label1 When al=101; dl =200.
What does bx lr do in ARM assembly language? - Stack Overflow
2014年11月23日 · @user2177940 Part 1: Mode Switch. An ARMv7 CPU operates in one of two modes (Called ARM or Thumb), that differ in the instruction encoding (chiefly in "complete" but large 4-byte instructions vs. "restricted" but small 2-byte instructions).
68000 - What Does # Mean in Assembly? - Stack Overflow
2018年9月29日 · in 68k assembly, the # sign denotes immediate constants. Everything else is normally considered an address: move.w #6,d0 will load the constant immediate value 6 into register d0, while. move.w 6,d0 will do something entirely different: It will fetch the word at the constant address 6 into register d0
if statement - How to write if-else in assembly? - Stack Overflow
2016年11月15日 · There's not only one assembly language. Assembly for ARM obviously must be different from Sparc, MIPS or x86. They all have different instructions for comparison. You must specify the architecture. About else if, the latter if is just another block of code in else. –
8085 assembly instructions MOV, LDA and STA - Stack Overflow
2016年11月25日 · It's partly just a question of designing the text assembly language. e.g. x86 uses MOV for loads, stores, and mov-immediate. Most assembly languages for RISC architectures use separate load and store mnemonics, but there's no reason they have to be that way. In both cases, loads and stores have separate opcodes. –