3.6. 3.6 Address Expressions

Earlier, this chapter points out that addressing modes take a couple generic forms, including:

VarName[ Reg32 ]
VarName[ Reg32 + offset ]
VarName[ RegNotESP32*Scale ]
VarName[ Reg32 + RegNotESP32*Scale ]
VarName[ RegNotESP32*Scale + offset ]
and
VarName[ Reg32 + RegNotESP32*Scale + offset ]

Another legal form, which isn't actually a new addressing mode but simply an extension of the displacement-only addressing mode, is

VarName[ offset ]

This latter example computes its effective address by adding the constant offset within the brackets to the variable's address. For example, the instruction "mov(Address[3], AL);" loads the AL register with the byte in memory that is three bytes beyond the Address object (see Figure ...

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