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      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 .text
     19 .p2align 2
     20 GCC_ASM_EXPORT(CpuBreakpoint)
     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 ASM_PFX(CpuBreakpoint):
     36     svc   0xdbdb    // Superviser exception. Takes 16bit arg -> Armv7 had 'swi' here.
     37     ret
     38