dgrove@google.com
4c0f559d23
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15 260f80e4-7a28-3924-810f-c04153c831b5
61 lines
2.0 KiB
C++
61 lines
2.0 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
// Class for patching compiled code.
|
|
|
|
#ifndef VM_CODE_PATCHER_H_
|
|
#define VM_CODE_PATCHER_H_
|
|
|
|
#include "vm/allocation.h"
|
|
|
|
namespace dart {
|
|
|
|
// Forward declaration.
|
|
class Code;
|
|
class ExternalLabel;
|
|
class Function;
|
|
class String;
|
|
|
|
class CodePatcher : public AllStatic {
|
|
public:
|
|
// Dart static calls have a distinct, machine-dependent code pattern.
|
|
|
|
// Patch static call to the new target.
|
|
static void PatchStaticCallAt(uword addr, uword new_target_address);
|
|
|
|
// Overwrites code at 'at_addr' with a call to 'label'.
|
|
static void InsertCall(uword at_addr, const ExternalLabel* label);
|
|
|
|
// Overwrites code at 'at_addr' with a jump to 'label'.
|
|
static void InsertJump(uword at_addr, const ExternalLabel* label);
|
|
|
|
// Patch entry point with a jump as specified in the code's patch region.
|
|
static void PatchEntry(const Code& code);
|
|
|
|
// Restore entry point with original code (i.e., before patching).
|
|
static void RestoreEntry(const Code& code);
|
|
|
|
// Returns true if the code can be patched with a jump at beginnning (checks
|
|
// that there are no conflicts with object pointers).
|
|
static bool CodeIsPatchable(const Code& code);
|
|
|
|
// Get static call information.
|
|
static void GetStaticCallAt(uword return_address,
|
|
Function* function,
|
|
uword* target);
|
|
|
|
// Patch instance call to the new target.
|
|
static void PatchInstanceCallAt(uword addr, uword new_target_address);
|
|
|
|
// Get instance call information.
|
|
static void GetInstanceCallAt(uword return_address,
|
|
String* function_name,
|
|
int* num_arguments,
|
|
int* num_named_arguments,
|
|
uword* target);
|
|
};
|
|
|
|
} // namespace dart
|
|
|
|
#endif // VM_CODE_PATCHER_H_
|