sha1rnds4

SHA1 Rounds 4

SHA1RNDS4 xmm1, xmm2/m128, imm8

Performs 4 rounds of SHA1 operation.

Details

The SHA1 Rounds 4 instruction performs 4 rounds of SHA1 operation.

Pseudocode Operation

// Performs 4 rounds of SHA1 operation

Example

SHA1RNDS4 xmm1, xmm2/m128, 3

Encoding

Binary Layout
0F
+0
3A
+1
CC
+2
 
Format Legacy
Opcode 0F 3A CC
Extension SHA

Operands

  • dest
    128-bit XMM SIMD register
  • src1
    128-bit XMM SIMD register or Memory operand
  • src2
    8-bit signed immediate