tools/tests/execperf/exit-asm.S

   1 .text
   2         .globl mystart
   3 mystart:
   4 #if defined(__x86_64__)
   5         pushq $0
   6         mov %rsp, %rbp
   7         andq $0xfffffffffffffff0, %rsp
   8         movl $42, %edi
   9         movl $0x2000001, %eax
  10         movl $0, %ecx
  11         movq %rcx, %r10
  12         syscall
  13         jmp 1f
  14 1:
  15         hlt
  16         nop
  17         nop
  18         nop
  19         nop
  20 #elif defined(__i386__)
  21         pushl $0
  22         mov %esp, %ebp
  23         andl $0xfffffff0, %esp
  24         subl $12, %esp
  25         pushl $42
  26         mov $0x40001, %eax
  27         call _sysenter_trap
  28         jmp 1f
  29 1:
  30         hlt
  31         nop
  32         nop
  33         nop
  34         nop
  35 _sysenter_trap:
  36         pop %edx
  37         mov %esp, %ecx
  38         sysenter
  39         nop
  40 #else
  41 #error Unsupported architecture
  42 #endif