stdlib/getentropy.shared.s

   1         .text
   2 #APP
   3         memmove = __GI_memmove
   4         memset = __GI_memset
   5         memcpy = __GI_memcpy
   6 #NO_APP
   7         .p2align 4,,15
   8         .globl  getentropy
   9         .type   getentropy, @function
  10 getentropy:
  11         cmpq    $256, %rsi
  12         movq    %rdi, %r8
  13         ja      .L9
  14         leaq    (%rdi,%rsi), %r9
  15         cmpq    %r9, %rdi
  16         jnb     .L4
  17         movl    $318, %r10d
  18         jmp     .L10
  19         .p2align 4,,10
  20         .p2align 3
  21 .L7:
  22         je      .L9
  23         addq    %rax, %r8
  24 .L8:
  25         cmpq    %r8, %r9
  26         jbe     .L4
  27 .L10:
  28         movq    %r9, %rsi
  29         xorl    %edx, %edx
  30         movq    %r8, %rdi
  31         subq    %r8, %rsi
  32         movl    %r10d, %eax
  33 #APP
  34 # 45 "../sysdeps/unix/sysv/linux/getentropy.c" 1
  35         syscall
  36
  37 # 0 "" 2
  38 #NO_APP
  39         cmpq    $-4096, %rax
  40         ja      .L19
  41         testq   %rax, %rax
  42         jns     .L7
  43         movq    __libc_errno@gottpoff(%rip), %rax
  44         movl    %fs:(%rax), %eax
  45 .L6:
  46         cmpl    $4, %eax
  47         je      .L8
  48         movl    $-1, %eax
  49         ret
  50         .p2align 4,,10
  51         .p2align 3
  52 .L19:
  53         movq    __libc_errno@gottpoff(%rip), %rdx
  54         negl    %eax
  55         movl    %eax, %fs:(%rdx)
  56         jmp     .L6
  57         .p2align 4,,10
  58         .p2align 3
  59 .L4:
  60         xorl    %eax, %eax
  61         ret
  62         .p2align 4,,10
  63         .p2align 3
  64 .L9:
  65         movq    __libc_errno@gottpoff(%rip), %rax
  66         movl    $5, %fs:(%rax)
  67         movl    $-1, %eax
  68         ret
  69         .size   getentropy, .-getentropy