stdlib/__start_context.shared.s

   1 .globl __start_context
   2 .type __start_context,@function
   3 .align 1<<4
   4 __start_context:
   5  movq %rbx, %rsp
   6  movq (%rsp), %rdi
   7  testq %rdi, %rdi
   8  je 2f
   9  call __setcontext
  10  movq %rax,%rdi
  11 2:
  12  call __GI_exit
  13 .Lhlt:
  14  hlt
  15 .size __start_context,.-__start_context