mirror of
https://github.com/corda/corda.git
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117 lines
3.2 KiB
C++
117 lines
3.2 KiB
C++
/* Copyright (c) 2008-2014, Avian Contributors
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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There is NO WARRANTY for this software. See license.txt for
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details. */
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#ifndef AVIAN_CODEGEN_ASSEMBLER_H
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#define AVIAN_CODEGEN_ASSEMBLER_H
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#include <avian/system/system.h>
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#include "avian/zone.h"
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#include <avian/codegen/lir.h>
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#include <avian/codegen/registers.h>
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#include <avian/codegen/promise.h>
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namespace avian {
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namespace codegen {
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class Architecture;
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class OperandInfo {
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public:
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const unsigned size;
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const lir::Operand::Type type;
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lir::Operand* const operand;
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inline OperandInfo(unsigned size,
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lir::Operand::Type type,
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lir::Operand* operand)
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: size(size), type(type), operand(operand)
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{
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}
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};
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#ifdef AVIAN_TAILS
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const bool TailCalls = true;
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#else
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const bool TailCalls = false;
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#endif
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#ifdef AVIAN_USE_FRAME_POINTER
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const bool UseFramePointer = true;
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#else
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const bool UseFramePointer = false;
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#endif
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class Assembler {
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public:
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class Client {
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public:
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virtual Register acquireTemporary(RegisterMask mask = AnyRegisterMask) = 0;
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virtual void releaseTemporary(Register r) = 0;
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virtual void save(Register r) = 0;
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};
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class Block {
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public:
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virtual unsigned resolve(unsigned start, Block* next) = 0;
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};
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virtual void setClient(Client* client) = 0;
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virtual Architecture* arch() = 0;
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virtual void checkStackOverflow(uintptr_t handler,
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unsigned stackLimitOffsetFromThread) = 0;
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virtual void saveFrame(unsigned stackOffset, unsigned ipOffset) = 0;
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virtual void pushFrame(unsigned argumentCount, ...) = 0;
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virtual void allocateFrame(unsigned footprint) = 0;
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virtual void adjustFrame(unsigned difference) = 0;
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virtual void popFrame(unsigned footprint) = 0;
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virtual void popFrameForTailCall(unsigned footprint,
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int offset,
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Register returnAddressSurrogate,
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Register framePointerSurrogate) = 0;
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virtual void popFrameAndPopArgumentsAndReturn(unsigned frameFootprint,
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unsigned argumentFootprint) = 0;
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virtual void popFrameAndUpdateStackAndReturn(unsigned frameFootprint,
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unsigned stackOffsetFromThread)
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= 0;
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virtual void apply(lir::Operation op) = 0;
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virtual void apply(lir::UnaryOperation op, OperandInfo a) = 0;
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virtual void apply(lir::BinaryOperation op, OperandInfo a, OperandInfo b) = 0;
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virtual void apply(lir::TernaryOperation op,
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OperandInfo a,
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OperandInfo b,
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OperandInfo c) = 0;
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virtual void setDestination(uint8_t* dst) = 0;
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virtual void write() = 0;
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virtual Promise* offset(bool forTrace = false) = 0;
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virtual Block* endBlock(bool startNew) = 0;
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virtual void endEvent() = 0;
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virtual unsigned length() = 0;
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virtual unsigned footerSize() = 0;
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virtual void dispose() = 0;
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};
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} // namespace codegen
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} // namespace avian
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#endif // AVIAN_CODEGEN_ASSEMBLER_H
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