September 2017
Beginner to intermediate
290 pages
6h 58m
English
Content preview from Mastering Assembly Programming
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FPU instructions
FPU instructions are executed by the x87 floating-point unit (FPU) and operate on floating point, integer, or binary coded decimal values. These instructions are grouped by their purpose:
- FPU data transfer instructions
- FPU basic arithmetic instructions
- FPU comparison instructions
- FPU load constant instructions
- FPU control instructions
Another important aspect of the FPU operation is the fact that, unlike the registers of the processor, floating point registers are organized in the form of a stack. Instructions like fld are used to push the operand onto the top of the stack, instructions like fst are used for reading a value from the top of the stack, and instructions like fstp are used for popping the value from the top ...
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