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What’s the difference between EAX, EBX, and ECX in assembly? eax, ebx, ecx and so on are actually registers, which can be seen as "hardware" variables, somewhat similar to higher level-language's variables Registers can be used in your software directly with instructions such as mov, add or cmp
What does the bracket in `movl (%eax), %eax` mean? I have googled enough but could not figure out what the bracket means Also, I see some syntax as movl 8(%ebp), %eax Could some someone suggest me some good reference?
How does mov (%ebx,%eax,4),%eax work? - Stack Overflow Been working on an assembly assignment, and for the most part I understand assembly pretty well Or well at least well enough for this assignment But this mov statement is tripping me up I would
What does mov (%edx, %ebx, 1), %al do? - Stack Overflow The equivalent Intel syntax would be mov al, [edx+ebx*1] In other words, it's loading a byte from memory at the address formed by edx + ebx*1 and placing the byte in the al register Note that the *1 (or , 1 in AT T syntax) is superflous; just writing [edx+ebx] ((%edx, %ebx) in AT T syntax) would've achieved the same thing
assembly - Why cannot do mov [eax], [ebx] - Stack Overflow You can't do mov [eax], [ebx] because that implies a machine instruction that will let you specify two memory operands The x86 instruction set is largely designed around machine instructions that let you specify one register and one memory operand, because that is pretty useful, and it doesn't affect performance of operations that fetch to