ArmPkg/ArmDisassemblerLib: ARMThumb and AArch64 fixes

- Fix ARM Thumb mask operator. This was flagged by a toolchain as warning
  "use of logical '&&' with constant operand [-Wconstant-logical-operand]"
- AArch64 should not be building the ARM32 disassemblers.
- Add a AArch64 build target. The disassembler is still to be
  implemented.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Harry Liebel <Harry.Liebel@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16069 6f19259b-4bc3-4df7-8a09-765794883524

ArmPkg/Library/ArmDisassemblerLib/Aarch64Disassembler.c

@@ -0,0 +1,48 @@
+/** @file
+  Default exception handler
+
+  Copyright (c) 2014, ARM Limited. All rights reserved.
+
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD
+  License which accompanies this distribution.  The full text of the license may
+  be found at http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Base.h>
+#include <Library/BaseLib.h>
+#include <Library/PrintLib.h>
+#include <Library/ArmDisassemblerLib.h>
+
+/**
+  Place a disassembly of of **OpCodePtr into buffer, and update OpCodePtr to
+  point to next instruction.
+
+  @param  OpCodePtrPtr  Pointer to pointer of instruction to disassemble.
+  @param  Thumb         TRUE for Thumb(2), FALSE for ARM instruction stream
+  @param  Extended      TRUE dump hex for instruction too.
+  @param  ItBlock       Size of IT Block
+  @param  Buf           Buffer to sprintf disassembly into.
+  @param  Size          Size of Buf in bytes.
+
+**/
+VOID
+DisassembleInstruction (
+  IN  UINT8     **OpCodePtr,
+  IN  BOOLEAN   Thumb,
+  IN  BOOLEAN   Extended,
+  IN OUT UINT32 *ItBlock,
+  OUT CHAR8     *Buf,
+  OUT UINTN     Size
+  )
+{
+  // Not yet supported for AArch64.
+  // Put error in the buffer as we have no return code and the buffer may be
+  // printed directly so needs a '\0'.
+  AsciiSPrint (Buf, Size, "AArch64 not supported");
+  return;
+}