arch/um/sys-x86_64/stub.S

   1 #include "uml-config.h"
   2
   3         .globl syscall_stub
   4 .section .__syscall_stub, "x"
   5 syscall_stub:
   6         syscall
   7         /* We don't have 64-bit constants, so this constructs the address
   8          * we need.
   9          */
  10         movq    $(UML_CONFIG_STUB_DATA >> 32), %rbx
  11         salq    $32, %rbx
  12         movq    $(UML_CONFIG_STUB_DATA & 0xffffffff), %rcx
  13         or      %rcx, %rbx
  14         movq    %rax, (%rbx)
  15         int3