third_party/boringssl/linux-x86_64/crypto/rand/rdrand-x86_64.S

   1 #if defined(__x86_64__)
   2 .text
   3
   4
   5
   6
   7 .globl  CRYPTO_rdrand
   8 .hidden CRYPTO_rdrand
   9 .type   CRYPTO_rdrand,@function
  10 .align  16
  11 CRYPTO_rdrand:
  12         xorq    %rax,%rax
  13
  14
  15 .byte   0x48, 0x0f, 0xc7, 0xf1
  16
  17         adcq    %rax,%rax
  18         movq    %rcx,0(%rdi)
  19         .byte   0xf3,0xc3
  20
  21
  22
  23
  24
  25 .globl  CRYPTO_rdrand_multiple8_buf
  26 .hidden CRYPTO_rdrand_multiple8_buf
  27 .type   CRYPTO_rdrand_multiple8_buf,@function
  28 .align  16
  29 CRYPTO_rdrand_multiple8_buf:
  30         testq   %rsi,%rsi
  31         jz      .Lout
  32         movq    $8,%rdx
  33 .Lloop:
  34
  35
  36 .byte   0x48, 0x0f, 0xc7, 0xf1
  37         jnc     .Lerr
  38         movq    %rcx,0(%rdi)
  39         addq    %rdx,%rdi
  40         subq    %rdx,%rsi
  41         jnz     .Lloop
  42 .Lout:
  43         movq    $1,%rax
  44         .byte   0xf3,0xc3
  45 .Lerr:
  46         xorq    %rax,%rax
  47         .byte   0xf3,0xc3
  48 #endif