Mercurial > hg > truffle
diff graal/com.oracle.max.asmdis/src/com/sun/max/asm/AssemblyInstructionEditor.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.max.asmdis/src/com/sun/max/asm/AssemblyInstructionEditor.java Sat Dec 17 19:59:18 2011 +0100 @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.sun.max.asm; + +import com.sun.max.lang.*; + +/** + * Interface for target code edition. Currently, used by the JIT only, for template-based code generation. + * The interface is currently customized to the need of the JIT. + */ +public interface AssemblyInstructionEditor { + + /** + * Returns the displacement in the edited instruction. + * @param displacementWidth the width of the displacement in the instruction + * @return the displacement in the edited instruction + */ + int getIntDisplacement(WordWidth displacementWidth) throws AssemblyException; + + /** + * Returns the immediate int value in the edited instruction. + * @param displacementWidth the width of the displacement in the instruction + * @return the displacement in the edited instruction + */ + int getIntImmediate(WordWidth immediateWidth) throws AssemblyException; + + /** + * Replaces the value of the immediate displacement in a load/store instruction. + * The original instruction must have an immediate displacement operand that can hold 8-bit immediate value. + * @param displacementWidth width of the displacement in the original instruction + * @param withIndex indicate if the instruction uses a register index. + * @param disp8 new value of the displacement. + */ + void fixDisplacement(WordWidth displacementWidth, boolean withIndex, byte disp8); + + /** + * Replaces the value of the immediate displacement in a load/store instruction. + * The original instruction must have an immediate displacement operand that can hold 32-bit immediate value. + * @param disp32 + * @throws AssemblyException + * if the replacement is not allowed (e.g., the instruction is + * not a load/store with immediate displacement parameter). + */ + void fixDisplacement(WordWidth displacementWidth, boolean withIndex, int disp32) throws AssemblyException; + + /** + * Replaces the value of the immediate source operand of an instruction. + * (tested with store instruction only). + * @param operandWidth the width of the operand being replaced + * @param imm8 the new immediate value of the operand. + */ + void fixImmediateOperand(WordWidth operandWidth, byte imm8); + + /** + * Replaces the value of the immediate source operand of an instruction. + * (tested with store instruction only). + * @param operandWidth the width of the operand being replaced + * @param imm16 the new immediate value of the operand. + */ + void fixImmediateOperand(WordWidth operandWidth, short imm16); + + /** + * Replaces the value of the immediate source operand of an instruction. + * (tested with store instruction only). + * @param operandWidth the width of the operand being replaced + * @param imm32 the new immediate value of the operand. + */ + void fixImmediateOperand(WordWidth operandWidth, int imm32); + + /** + * Replaces the value of the immediate source operand of an instruction. + * @param imm64 the new immediate value of the operand. + */ + void fixImmediateOperand(int imm32); + + /** + * Replaces the value of the immediate source operand of an instruction. + * @param imm64 the new immediate value of the operand. + */ + void fixImmediateOperand(long imm64); + + /** + * Fix relative displacement of a branch instruction. + * + * @param originalDisplacementWidth + * @param displacementWidth width of the relative displacement in the original instruction + * @param disp32 new relative displacement + */ + void fixBranchRelativeDisplacement(WordWidth displacementWidth, int disp32) throws AssemblyException; +}