hausner@google.com
b7cf1328a1
- Introduce Debugger class. - Each isolate has a debugger object. - Introduce stubs that can be put in place of static or dynamic Dart function calls. - Very rudimentary command line option to place a breakpoint at the beginning of a function. Review URL: http://codereview.chromium.org//8687037 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@1928 260f80e4-7a28-3924-810f-c04153c831b5
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Class for patching compiled code.
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#ifndef VM_CODE_PATCHER_H_
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#define VM_CODE_PATCHER_H_
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#include "vm/allocation.h"
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namespace dart {
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// Forward declaration.
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class Array;
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class Code;
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class ExternalLabel;
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class Function;
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class RawArray;
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class String;
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class CodePatcher : public AllStatic {
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public:
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// Dart static calls have a distinct, machine-dependent code pattern.
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// Patch static call to the new target.
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static void PatchStaticCallAt(uword addr, uword new_target_address);
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// Patch instance call to the new target.
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static void PatchInstanceCallAt(uword addr, uword new_target_address);
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// Patch entry point with a jump as specified in the code's patch region.
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static void PatchEntry(const Code& code);
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// Restore entry point with original code (i.e., before patching).
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static void RestoreEntry(const Code& code);
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// Returns true if the code can be patched with a jump at beginnning (checks
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// that there are no conflicts with object pointers).
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static bool CodeIsPatchable(const Code& code);
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// Returns true if the code before return_address is a static
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// or dynamic Dart call.
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static bool IsDartCall(uword return_address);
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// Get static call information.
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static void GetStaticCallAt(uword return_address,
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Function* function,
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uword* target);
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// Get instance call information.
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static void GetInstanceCallAt(uword return_address,
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String* function_name,
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int* num_arguments,
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int* num_named_arguments,
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uword* target);
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static RawArray* GetInstanceCallIcDataAt(uword return_address);
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static void SetInstanceCallIcDataAt(uword return_address,
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const Array& ic_data);
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static intptr_t InstanceCallSizeInBytes();
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};
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} // namespace dart
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#endif // VM_CODE_PATCHER_H_
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