zra@google.com
df2054dae7
R=fschneider@google.com, srdjan@google.com Review URL: https://codereview.chromium.org//22825023 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@27295 260f80e4-7a28-3924-810f-c04153c831b5
76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
// Copyright (c) 2013, 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_MIPS_H_
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#define VM_INSTRUCTIONS_MIPS_H_
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#ifndef VM_INSTRUCTIONS_H_
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#error Do not include instructions_mips.h directly; use instructions.h instead.
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#endif
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#include "vm/constants_mips.h"
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#include "vm/object.h"
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namespace dart {
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class CallPattern : public ValueObject {
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public:
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CallPattern(uword pc, const Code& code);
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RawICData* IcData();
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RawArray* ClosureArgumentsDescriptor();
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uword TargetAddress() const;
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void SetTargetAddress(uword target_address) const;
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// This constant length is only valid for inserted call patterns used for
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// lazy deoptimization. Regular call pattern may vary in length.
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static const int kFixedLengthInBytes = 4 * Instr::kInstrSize;
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static void InsertAt(uword pc, uword target_address);
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private:
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uword Back(int n) const;
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int DecodeLoadObject(int end, Register* reg, Object* obj);
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int DecodeLoadWordImmediate(int end, Register* reg, int* value);
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int DecodeLoadWordFromPool(int end, Register* reg, int* index);
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const uword* end_;
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int target_address_pool_index_;
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int args_desc_load_end_;
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Array& args_desc_;
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int ic_data_load_end_;
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ICData& ic_data_;
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const Array& object_pool_;
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DISALLOW_COPY_AND_ASSIGN(CallPattern);
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};
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class JumpPattern : public ValueObject {
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public:
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JumpPattern(uword pc, const Code& code);
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// lui; ori; jr; nop (in delay slot) = 4.
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static const int kLengthInBytes = 4*Instr::kInstrSize;
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int pattern_length_in_bytes() const {
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return kLengthInBytes;
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}
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bool IsValid() const;
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uword TargetAddress() const;
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void SetTargetAddress(uword target_address) const;
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private:
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const uword pc_;
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DISALLOW_COPY_AND_ASSIGN(JumpPattern);
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};
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} // namespace dart
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#endif // VM_INSTRUCTIONS_MIPS_H_
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