diff options
author | Simon Hausmann <simon.hausmann@digia.com> | 2013-10-03 13:03:18 +0200 |
---|---|---|
committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-10-10 21:50:45 +0200 |
commit | 36a5530cc9e04ed0ea381ebd1e2b1517eaa50a9f (patch) | |
tree | 08b9c85c4629a94e22cad1f887d43777a27290b3 /src/3rdparty/masm/disassembler/ARMv7Disassembler.cpp | |
parent | b7ff0575be4c5a1b8a4561bb827ebe7f782f9ac8 (diff) |
Add support for showing disassembled ARM JIT code
Ported the ARM disassembler from upstream trunk. QtQml needs to be configured
with qmake CONFIG+=disassembler and QV4_SHOW_ASM=1 enables the dump at
run-time.
Change-Id: Ia13a98835829fde0d3c5a795cb8f6ef9de951807
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Diffstat (limited to 'src/3rdparty/masm/disassembler/ARMv7Disassembler.cpp')
-rw-r--r-- | src/3rdparty/masm/disassembler/ARMv7Disassembler.cpp | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/3rdparty/masm/disassembler/ARMv7Disassembler.cpp b/src/3rdparty/masm/disassembler/ARMv7Disassembler.cpp new file mode 100644 index 0000000000..bfb48953c0 --- /dev/null +++ b/src/3rdparty/masm/disassembler/ARMv7Disassembler.cpp @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2013 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "Disassembler.h" + +#if USE(ARMV7_DISASSEMBLER) + +#include "ARMv7/ARMv7DOpcode.h" +#include "MacroAssemblerCodeRef.h" + +namespace JSC { + +bool tryToDisassemble(const MacroAssemblerCodePtr& codePtr, size_t size, const char* prefix, PrintStream& out) +{ + ARMv7DOpcode armOpcode; + + uint16_t* currentPC = reinterpret_cast<uint16_t*>(reinterpret_cast<uintptr_t>(codePtr.executableAddress())&~1); + uint16_t* endPC = currentPC + (size / sizeof(uint16_t)); + + while (currentPC < endPC) { + char pcString[12]; + snprintf(pcString, sizeof(pcString), "0x%x", reinterpret_cast<unsigned>(currentPC)); + out.printf("%s%10s: %s\n", prefix, pcString, armOpcode.disassemble(currentPC)); + } + + return true; +} + +} // namespace JSC + +#endif // USE(ARMV7_DISASSEMBLER) + |