dmcallis
65a0592776
Source code drop for the Actionscript virtual machine in the Adobe Flash Player for December 2013
81 lines
4.4 KiB
C++
81 lines
4.4 KiB
C++
/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4 -*- */
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/* vi: set ts=4 sw=4 expandtab: (add to ~/.vimrc: set modeline modelines=5) */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __avmplus_Coder__
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#define __avmplus_Coder__
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namespace avmplus
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{
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/**
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* CodegenDriver defines the interface by which CodeWriters may call back
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* to their top-level driver, e.g. CodegenLIR calling back to Verifier.
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*/
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class CodegenDriver {
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public:
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virtual ~CodegenDriver() {}
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virtual const uint8_t* getTryFrom() const = 0;
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virtual const uint8_t* getTryTo() const = 0;
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virtual bool hasFrameState(const uint8_t* pc) const = 0;
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virtual int getBlockCount() const = 0;
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virtual bool hasReachableExceptions() const = 0;
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virtual FrameState* getFrameState(const uint8_t* pc) const = 0;
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};
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class CodeWriter {
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public:
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CodeWriter();
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virtual ~CodeWriter();
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virtual void write(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, Traits *type);
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virtual void writeOp1(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, uint32_t opd1, Traits *type);
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virtual void writeOp2(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, uint32_t opd1, uint32_t opd2, Traits* type);
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virtual void writeMethodCall(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, MethodInfo*, uintptr_t disp_id, uint32_t argc, Traits* type);
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virtual void writeNip(const FrameState* state, const uint8_t *pc, uint32_t count);
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virtual void writeCheckNull(const FrameState* state, uint32_t index);
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virtual void writeCoerce(const FrameState* state, uint32_t index, Traits* type);
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virtual void writeCoerceToNumeric(const FrameState* state, uint32_t index);
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virtual void writeCoerceToFloat4(const FrameState* state, uint32_t index);
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virtual void writePrologue(const FrameState* state, const uint8_t *pc, CodegenDriver*);
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virtual void writeEpilogue(const FrameState* state);
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virtual void writeBlockStart(const FrameState* state);
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virtual void writeOpcodeVerified(const FrameState* state, const uint8_t *pc, AbcOpcode opcode);
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virtual void writeFixExceptionsAndLabels(const FrameState* state, const uint8_t *pc);
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virtual void cleanup();
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// convenience functions
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void write(const FrameState* state, const uint8_t *pc, AbcOpcode opcode);
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void writeOp1(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, uint32_t opd1);
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void writeOp2(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, uint32_t opd1, uint32_t opd2);
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};
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class NullWriter : public CodeWriter {
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public:
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CodeWriter* coder; // the next leg of the pipeline
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NullWriter(CodeWriter* coder);
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~NullWriter();
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void write(const FrameState* state, const uint8_t* pc, AbcOpcode opcode, Traits *type);
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void writeOp1(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, uint32_t opd1, Traits *type);
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void writeOp2(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, uint32_t opd1, uint32_t opd2, Traits* type);
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void writeMethodCall(const FrameState* state, const uint8_t *pc, AbcOpcode opcode, MethodInfo*, uintptr_t disp_id, uint32_t argc, Traits* type);
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/** Remove the count items under the stack top. Equivalent to: while (count--) {swap;pop} */
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void writeNip(const FrameState* state, const uint8_t *pc, uint32_t count);
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void writeCheckNull(const FrameState* state, uint32_t index);
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void writeCoerceToNumeric(const FrameState* state, uint32_t index);
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void writeCoerceToFloat4(const FrameState* state, uint32_t index1);
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void writeCoerce(const FrameState* state, uint32_t index, Traits *type);
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void writePrologue(const FrameState* state, const uint8_t *pc, CodegenDriver*);
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void writeEpilogue(const FrameState* state);
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void writeBlockStart(const FrameState* state);
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void writeOpcodeVerified(const FrameState* state, const uint8_t *pc, AbcOpcode opcode);
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void writeFixExceptionsAndLabels(const FrameState* state, const uint8_t *pc);
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void cleanup();
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};
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}
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#endif /* __avmplus_Coder__ */
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