X86assemblyshl

sal(oritssynonymshl)leftshifts(multiplies)abyte,word,orlongvalueforacountspecifiedbyanimmediatevalueandstorestheproductinthatbyte, ...,2021年11月29日—SHL=ShiftLeft.Shiftsallbitsintheregisterleft.Themostsignificantbitjust“shiftedout”ismovedintothecarryflag(CF).,2008年2月15日—LogicalShift所用的指令為SHR(向右位移)與SHL(向左位移)，位移的最後一個bit會存於carryflag中。ArithmeticShift所用的指令為SAL...

參考資訊如下
Shift (sal, shl, sar, shr)

sal (or its synonym shl ) left shifts (multiplies) a byte, word, or long value for a count specified by an immediate value and stores the product in that byte, ...

What is SHL in assembly language?

2021年11月29日 — SHL = Shift Left. Shifts all bits in the register left. The most significant bit just “shifted out” is moved into the carry flag (CF).

PC Assembly Language 學習筆記(6)

2008年2月15日 — Logical Shift 所用的指令為SHR(向右位移) 與SHL(向左位移)，位移的最後一個bit 會存於carry flag 中。 Arithmetic Shift 所用的指令為SAL 與SAR，專門用來 ...

X86 assembly shifting instructions SHR and SHL.

Checking the SHL x86 assembly instruction for overflow

2023年10月30日 — What is an easy way to check after the SHL EAX, CL instruction whether the theoretical result (EAX times (2 power CL)) fits into EAX?

SALSARSHLSHR — Shift

The shift arithmetic left (SAL) and shift logical left (SHL) instructions perform the same operation; they shift the bits in the destination operand to the left ...

Assembly Language for Intel

由 KR Irvine 著作 · 被引用 109 次 — The SHL (shift left) instruction performs a logical left shift on the destination operand, filling the lowest bit with 0. CF. 0. • Operand types: SHL reg,imm8.

Use of Shl in assembly

2014年6月3日 — Use of Shl in assembly · SHL is like << in C, it shifts the bits left. · so, how I understand it is: first I move the content of EBP-0x4 in eax.

X86-assemblyInstructionsshl

2020年2月10日 — Description · The shl or sal instruction is used to shift the bits of the operand destination to the left, by the number of bits specified in ...

SALSARSHLSHR

The CF flag contains the value of the last bit shifted out of the destination operand; it is undefined for SHL and SHR instructions.