SHA256RNDS2

SHA SHA x86_64

SHA256RNDS2 is an instruction of the x86_64 architecture (x86 / x86-64 (covers 16/32/64-bit modes)), category SHA. This page lists its 2 encoding forms, distinguished by opcode byte: CB.

Each form below links to its full decode: the operand roles and where each one is encoded in the instruction, the flag and register effects, and any micro-op sequence authored for it.

XED_SHA256RNDS2_XMMi32_MEMi32_SHA
REG0=XMM_R():rw:dq:i32 MEM0:r:dq:i32 REG1=XED_REG_XMM0:r:SUPP:dq:u8
X86_LEGACY CB /r SHA
XED_SHA256RNDS2_XMMi32_XMMi32_SHA
REG0=XMM_R():rw:dq:i32 REG1=XMM_B():r:dq:i32 REG2=XED_REG_XMM0:r:SUPP:dq:u8
X86_LEGACY CB /r SHA