default rel %define XMMWORD %define YMMWORD %define ZMMWORD section .text code align=64 global CRYPTO_rdrand ALIGN 16 CRYPTO_rdrand: mov QWORD[8+rsp],rdi ;WIN64 prologue mov QWORD[16+rsp],rsi mov rax,rsp $L$SEH_begin_CRYPTO_rdrand: mov rdi,rcx DB 0x48,0x0f,0xc7,0xf0 mov rdi,QWORD[8+rsp] ;WIN64 epilogue mov rsi,QWORD[16+rsp] DB 0F3h,0C3h ;repret