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はてなキーワード: FMAとは

2020-02-16

Intelアセンブラ基本的モード

32bit (IA-32)

https://en.wikipedia.org/wiki/X86_assembly_language#Execution_modes

Real mode (16-bit)

Protected mode (16-bit and 32-bit)

Long mode (64-bit)

Virtual 8086 mode (16-bit)

System Management Mode (16-bit)

64bit(EMT64)

https://software.intel.com/en-us/articles/introduction-to-x64-assembly

General Architecture

Since the 64-bit registers allow access for many sizes and locations, we define a byte as 8 bits, a word as 16 bits, a double word as 32 bits, a quadword as 64 bits, and a double quadword as 128 bits. Intel stores bytes "little endian," meaning lower significant bytes are stored in lower memory addresses.

命令セット

MMX.SSE,AVX.FMA

 
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