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assemblyx86gnu-assembleraddressing-mode

How does this x86 addressing mode work?

Something like al will contain the address of esi + ecx + 1 ?

movb (%esi, %ecx, 1), %al
Solution

  • It loads the byte at memory address esi + ecx into al.

    In general, in AT&T syntax,

    (base, offset, multiplier)

    refers to the datum located at memory address base + offset*multiplier.