MdePkg/Library/BaseLib/AArch64/CpuBreakpoint.asm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; CpuBreakpoint() for AArch64
   4 ;
   5 ; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
   6 ; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   7 ; Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
   8 ; This program and the accompanying materials
   9 ; are licensed and made available under the terms and conditions of the BSD License
  10 ; which accompanies this distribution.  The full text of the license may be found at
  11 ; http://opensource.org/licenses/bsd-license.php.
  12 ;
  13 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  14 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  15 ;
  16 ;------------------------------------------------------------------------------
  17
  18
  19   EXPORT CpuBreakpoint
  20   AREA BaseLib_LowLevel, CODE, READONLY
  21
  22 ;/**
  23 ;  Generates a breakpoint on the CPU.
  24 ;
  25 ;  Generates a breakpoint on the CPU. The breakpoint must be implemented such
  26 ;  that code can resume normal execution after the breakpoint.
  27 ;
  28 ;**/
  29 ;VOID
  30 ;EFIAPI
  31 ;CpuBreakpoint (
  32 ;  VOID
  33 ;  );
  34 ;
  35 CpuBreakpoint
  36     svc   0xdbdb    // Superviser exception. Takes 16bit arg -> Armv7 had 'swi' here.
  37     ret
  38
  39   END