參數(shù)資料
型號: PRESENTATION
英文描述: Presentation - AMD抯 Next Generation Microprocessor Architecture
中文描述: 演示- AMD公司抯下一代微處理器架構(gòu)
文件頁數(shù): 6/47頁
文件大小: 472K
代理商: PRESENTATION
6
x86-64 I nstruction Set Architecture
x86-64 mode built on x86
Similar to the previous extension from 16-bit to 32-
bit
Vast majority of opcodes and features unchanged
I nteger/ Address register files and datapaths are
native 64-bit
48-Bit Virtual Address Space, 40-Bit Physical
Address Space
Enhancements
Add 8 new integer registers
Add PC relative addressing
Add full support for SSE/ SSEI I based Floating Point
Application Binary I nterface ( ABI )
including 16 registers
Additional Registers and Data Size added through
reclaim of one byte increment/ decrement opcodes
( 0x40-0x4F) for use as a single optional prefix
Public specification
w w w .x86-64.org
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