參數(shù)資料
型號: 20726
英文描述: 3DNow!? Technology Manual AMD-K6 Processor Multimedia Technology
中文描述: 3DNow???技術手冊的AMD - K6處理器多媒體技術
文件頁數(shù): 73/120頁
文件大?。?/td> 1284K
代理商: 20726
MMX Instruction Set
67
20726D/0—January 2000
AMD-K6 MMX Enhanced Processor Multimedia Technology
Preliminary Information
PSLLD
mnemonic
opcode
description
PSLLD mmreg1, mmreg2/mem64
0F F2h
Shift left logical packed 32-bit values in mmreg1 the number of
positions in mmreg2/mem64 with zero fill from the right
0F 72h /6 Shift left logical packed 32-bit values in mmreg1 the number of
positions in imm8 with zero fill from the right
PSLLD mmreg1, imm8
Privilege:
Registers Affected:
Flags Affected:
Exceptions Generated:
none
MMX
none
The PSLLD instruction shifts the two 32-bit operands in the destination operand (an
MMX register) to the left by the number of bit positions indicated by mmreg2/mem64
or by imm8, the 8-bit immediate operand. The shifted values are zero filled from the
right. The two 32-bit results are stored in the MMX register specified as the
destination operand.
Exception
Invalid opcode (6)
Device not available (7)
Real
X
X
Virtual
8086
X
X
Protected Description
X
X
The emulate MMX instruction bit (EM) of the control register (CR0) is set to 1.
Save the floating-point or MMX state if the task switch bit (TS) of the control
register (CR0) is set to 1.
During instruction execution, the stack segment limit was exceeded.
During instruction execution, the effective address of one of the segment
registers used for the operand points to an illegal memory location.
One of the instruction data operands falls outside the address range 00000h
to 0FFFFh.
A page fault resulted from the execution of the instruction.
An exception is pending due to the floating-point execution unit.
Stack exception (12)
General protection (13)
X
X
Segment overrun (13)
X
X
Page fault (14)
Floating-point exception
pending (16)
Alignment check (17)
X
X
X
X
X
X
X
An unaligned memory reference resulted from the instruction execution,
and the alignment mask bit (AM) of the control register (CR0) is set to 1.
(In Protected Mode, CPL = 3.)
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