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https://github.com/dart-lang/sdk
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f2333f63a5
Profiler improvements: - Track Functions in profile and build Function based trie - Associate code objects with functions - Created cpu_profile.dart library - Major speed improvements for disassembly view - Fix truncation of disassembly comments - Ability to get code object ticks from disassembly view - Inlining mini-map in disassembly view. - Remove a bunch of unused data from profile service response - In some cases a caller PC that is better than the PC marker is inserted into the stack trace - Inlined functions are expanded - Ability to clear profile - New flag '--keep_code' which keeps deoptimized code around for use by the profiler. General fixes: - Fix caching in service library - Remove pubspec.yaml before running pub get R=asiva@google.com, rmacnak@google.com Review URL: https://codereview.chromium.org//928833003 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@44067 260f80e4-7a28-3924-810f-c04153c831b5
118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
// Copyright (c) 2012, 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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// Classes that describe assembly patterns as used by inline caches.
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#ifndef VM_INSTRUCTIONS_X64_H_
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#define VM_INSTRUCTIONS_X64_H_
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#ifndef VM_INSTRUCTIONS_H_
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#error Do not include instructions_ia32.h directly; use instructions.h instead.
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#endif
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#include "vm/allocation.h"
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#include "vm/object.h"
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namespace dart {
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// Forward declarations.
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class RawClass;
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class Immediate;
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class RawObject;
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// Abstract class for all instruction pattern classes.
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class InstructionPattern : public ValueObject {
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public:
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explicit InstructionPattern(uword pc) : start_(pc) {
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ASSERT(pc != 0);
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}
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virtual ~InstructionPattern() {}
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// Call to check if the instruction pattern at 'pc' match the instruction.
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virtual bool IsValid() const {
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return TestBytesWith(pattern(), pattern_length_in_bytes());
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}
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// 'pattern' returns the expected byte pattern in form of an integer array
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// with length of 'pattern_length_in_bytes'. A '-1' element means 'any byte'.
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virtual const int* pattern() const = 0;
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virtual int pattern_length_in_bytes() const = 0;
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static intptr_t IndexFromPPLoad(uword start);
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static intptr_t OffsetFromPPIndex(intptr_t index);
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protected:
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uword start() const { return start_; }
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private:
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// Returns true if the 'num_bytes' bytes at 'start_' correspond to
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// array of integers 'data'. 'data' elements are either a byte or -1, which
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// represents any byte.
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bool TestBytesWith(const int* data, int num_bytes) const;
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const uword start_;
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DISALLOW_COPY_AND_ASSIGN(InstructionPattern);
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};
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class JumpPattern : public InstructionPattern {
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public:
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JumpPattern(uword pc, const Code& code)
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: InstructionPattern(pc),
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object_pool_(Array::Handle(code.ObjectPool())) {}
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static int InstructionLength() {
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return kLengthInBytes;
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}
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uword TargetAddress() const;
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void SetTargetAddress(uword new_target) const;
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virtual int pattern_length_in_bytes() const {
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return kLengthInBytes;
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}
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static const int kLengthInBytes = 7;
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private:
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virtual const int* pattern() const;
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const Array& object_pool_;
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DISALLOW_COPY_AND_ASSIGN(JumpPattern);
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};
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// 5 byte call instruction.
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class ShortCallPattern : public InstructionPattern {
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public:
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explicit ShortCallPattern(uword pc) : InstructionPattern(pc) {}
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static int InstructionLength() {
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return kLengthInBytes;
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}
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virtual int pattern_length_in_bytes() const {
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return kLengthInBytes;
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}
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void SetTargetAddress(uword new_target) const;
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private:
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static const int kLengthInBytes = 5;
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virtual const int* pattern() const;
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DISALLOW_COPY_AND_ASSIGN(ShortCallPattern);
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};
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class ReturnPattern : public InstructionPattern {
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public:
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explicit ReturnPattern(uword pc) : InstructionPattern(pc) {}
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virtual const int* pattern() const;
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virtual int pattern_length_in_bytes() const { return kLengthInBytes; }
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private:
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static const int kLengthInBytes = 1;
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};
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} // namespace dart
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#endif // VM_INSTRUCTIONS_X64_H_
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