Vyacheslav Egorov
f496e538f4
This is the next step towards preventing compiler from directly peeking into runtime and instead interact with runtime through a well defined surface. The goal of the refactoring to locate all places where compiler accesses some runtime information and partion those accesses into two categories: - creating objects in the host runtime (e.g. allocating strings, numbers, etc) during compilation; - accessing properties of the target runtime (e.g. offsets of fields) to embed those into the generated code; This change introduces dart::compiler and dart::compiler::target namespaces. All code in the compiler will gradually be moved into dart::compiler namespace. One of the motivations for this change is to be able to prevent access to globally defined host constants like kWordSize by shadowing them in the dart::compiler namespace. The nested namespace dart::compiler::target hosts all information about target runtime that compiler could access, e.g. compiler::target::kWordSize defines word size of the target which will eventually be made different from the host kWordSize (defined by dart::kWordSize). The API for compiler to runtime interaction is placed into compiler_api.h. Note that we still permit runtime to access compiler internals directly - this is not going to be decoupled as part of this work. Issue https://github.com/dart-lang/sdk/issues/31709 Change-Id: If4396d295879391becfa6c38d4802bbff81f5b20 Reviewed-on: https://dart-review.googlesource.com/c/90242 Commit-Queue: Vyacheslav Egorov <vegorov@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
110 lines
2.7 KiB
C++
110 lines
2.7 KiB
C++
// Copyright (c) 2016, 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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#ifndef RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_DBC_H_
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#define RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_DBC_H_
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#ifndef RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_H_
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#error Do not include assembler_dbc.h directly; use assembler.h instead.
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#endif
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#include "platform/assert.h"
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#include "platform/utils.h"
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#include "vm/constants_dbc.h"
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#include "vm/cpu.h"
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#include "vm/hash_map.h"
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#include "vm/simulator.h"
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namespace dart {
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namespace compiler {
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// Dummy declaration to make things compile.
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class Address : public ValueObject {
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private:
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Address();
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};
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class Assembler : public AssemblerBase {
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public:
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explicit Assembler(ObjectPoolBuilder* object_pool_builder,
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bool use_far_branches = false)
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: AssemblerBase(object_pool_builder) {}
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~Assembler() {}
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void Bind(Label* label);
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void Jump(Label* label);
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// Misc. functionality
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intptr_t prologue_offset() const { return 0; }
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// Debugging and bringup support.
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void Stop(const char* message) override;
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static void InitializeMemoryWithBreakpoints(uword data, intptr_t length);
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static const char* RegisterName(Register reg);
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static const char* FpuRegisterName(FpuRegister reg);
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static uword GetBreakInstructionFiller() { return SimulatorBytecode::kTrap; }
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static bool IsSafe(const Object& value) { return true; }
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static bool IsSafeSmi(const Object& value) { return false; }
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enum CanBeSmi {
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kValueIsNotSmi,
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kValueCanBeSmi,
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};
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// Bytecodes.
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#define DECLARE_EMIT(Name, Signature, Fmt0, Fmt1, Fmt2) \
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void Name(PARAMS_##Signature);
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#define PARAMS_0
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#define PARAMS_A_D uintptr_t ra, uintptr_t rd
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#define PARAMS_D uintptr_t rd
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#define PARAMS_A_B_C uintptr_t ra, uintptr_t rb, uintptr_t rc
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#define PARAMS_A_B_Y uintptr_t ra, uintptr_t rb, intptr_t ry
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#define PARAMS_A uintptr_t ra
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#define PARAMS_X intptr_t x
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#define PARAMS_T intptr_t x
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#define PARAMS_A_X uintptr_t ra, intptr_t x
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BYTECODES_LIST(DECLARE_EMIT)
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#undef PARAMS_0
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#undef PARAMS_A_D
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#undef PARAMS_D
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#undef PARAMS_A_B_C
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#undef PARAMS_A_B_Y
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#undef PARAMS_A
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#undef PARAMS_X
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#undef PARAMS_T
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#undef PARAMS_A_X
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#undef DECLARE_EMIT
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void Emit(int32_t value);
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void PushConstant(const Object& obj);
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void LoadConstant(uintptr_t ra, const Object& obj);
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intptr_t AddConstant(const Object& obj);
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void Nop(intptr_t d) { Nop(0, d); }
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private:
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DISALLOW_ALLOCATION();
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DISALLOW_COPY_AND_ASSIGN(Assembler);
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};
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} // namespace compiler
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using compiler::Address;
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} // namespace dart
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#endif // RUNTIME_VM_COMPILER_ASSEMBLER_ASSEMBLER_DBC_H_
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