third_party/boringssl/win-x86_64/crypto/rand/rdrand-x86_64.asm

   1 default rel
   2 %define XMMWORD
   3 %define YMMWORD
   4 %define ZMMWORD
   5 section .text code align=64
   6
   7
   8
   9
  10
  11 global  CRYPTO_rdrand
  12
  13 ALIGN   16
  14 CRYPTO_rdrand:
  15         mov     QWORD[8+rsp],rdi        ;WIN64 prologue
  16         mov     QWORD[16+rsp],rsi
  17         mov     rax,rsp
  18 $L$SEH_begin_CRYPTO_rdrand:
  19         mov     rdi,rcx
  20
  21
  22         xor     rax,rax
  23
  24
  25 DB      0x48,0x0f,0xc7,0xf1
  26
  27         adc     rax,rax
  28         mov     QWORD[rdi],rcx
  29         mov     rdi,QWORD[8+rsp]        ;WIN64 epilogue
  30         mov     rsi,QWORD[16+rsp]
  31         DB      0F3h,0C3h               ;repret
  32
  33
  34
  35
  36
  37 global  CRYPTO_rdrand_multiple8_buf
  38
  39 ALIGN   16
  40 CRYPTO_rdrand_multiple8_buf:
  41         mov     QWORD[8+rsp],rdi        ;WIN64 prologue
  42         mov     QWORD[16+rsp],rsi
  43         mov     rax,rsp
  44 $L$SEH_begin_CRYPTO_rdrand_multiple8_buf:
  45         mov     rdi,rcx
  46         mov     rsi,rdx
  47
  48
  49         test    rsi,rsi
  50         jz      NEAR $L$out
  51         mov     rdx,8
  52 $L$loop:
  53
  54
  55 DB      0x48,0x0f,0xc7,0xf1
  56         jnc     NEAR $L$err
  57         mov     QWORD[rdi],rcx
  58         add     rdi,rdx
  59         sub     rsi,rdx
  60         jnz     NEAR $L$loop
  61 $L$out:
  62         mov     rax,1
  63         mov     rdi,QWORD[8+rsp]        ;WIN64 epilogue
  64         mov     rsi,QWORD[16+rsp]
  65         DB      0F3h,0C3h               ;repret
  66 $L$err:
  67         xor     rax,rax
  68         mov     rdi,QWORD[8+rsp]        ;WIN64 epilogue
  69         mov     rsi,QWORD[16+rsp]
  70         DB      0F3h,0C3h               ;repret