ARMv7Disassembler.cpp 2.1 KB

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  1. /*
  2. * Copyright (C) 2013 Apple Inc. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. * 1. Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * 2. Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. *
  13. * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
  17. * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18. * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19. * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20. * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21. * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24. */
  25. #include "config.h"
  26. #include "Disassembler.h"
  27. #if USE(ARMV7_DISASSEMBLER)
  28. #include "ARMv7/ARMv7DOpcode.h"
  29. #include "MacroAssemblerCodeRef.h"
  30. namespace JSC {
  31. bool tryToDisassemble(const MacroAssemblerCodePtr& codePtr, size_t size, const char* prefix, PrintStream& out)
  32. {
  33. ARMv7DOpcode armOpcode;
  34. uint16_t* currentPC = reinterpret_cast<uint16_t*>(reinterpret_cast<uintptr_t>(codePtr.executableAddress())&~1);
  35. uint16_t* endPC = currentPC + (size / sizeof(uint16_t));
  36. while (currentPC < endPC) {
  37. char pcString[12];
  38. snprintf(pcString, sizeof(pcString), "0x%x", reinterpret_cast<unsigned>(currentPC));
  39. out.printf("%s%10s: %s\n", prefix, pcString, armOpcode.disassemble(currentPC));
  40. }
  41. return true;
  42. }
  43. } // namespace JSC
  44. #endif // USE(ARMV7_DISASSEMBLER)