posix/getcpu.s

   1         .text
   2         .p2align 4,,15
   3         .globl  __getcpu
   4         .hidden __getcpu
   5         .type   __getcpu, @function
   6 __getcpu:
   7         pushq   %rbp
   8         pushq   %rbx
   9         movq    %rsi, %rbp
  10         movq    %rdi, %rbx
  11         subq    $8, %rsp
  12         movq    _dl_vdso_getcpu(%rip), %rax
  13         testq   %rax, %rax
  14         je      .L6
  15         xorl    %edx, %edx
  16         call    *%rax
  17         movslq  %eax, %rdx
  18         cmpq    $-4096, %rdx
  19         jbe     .L1
  20         cmpq    $-38, %rdx
  21         je      .L6
  22 .L3:
  23         movq    __libc_errno@gottpoff(%rip), %rax
  24         negl    %edx
  25         movl    %edx, %fs:(%rax)
  26         movl    $-1, %eax
  27 .L5:
  28 .L1:
  29         addq    $8, %rsp
  30         popq    %rbx
  31         popq    %rbp
  32         ret
  33         .p2align 4,,10
  34         .p2align 3
  35 .L6:
  36         xorl    %edx, %edx
  37         movq    %rbp, %rsi
  38         movq    %rbx, %rdi
  39         movl    $309, %eax
  40 #APP
  41 # 27 "../sysdeps/unix/sysv/linux/getcpu.c" 1
  42         syscall
  43
  44 # 0 "" 2
  45 #NO_APP
  46         cmpq    $-4096, %rax
  47         movq    %rax, %rdx
  48         ja      .L3
  49         jmp     .L1
  50         .size   __getcpu, .-__getcpu
  51         .weak   getcpu
  52         .set    getcpu,__getcpu