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[Pearcolator-devel] SF.net SVN: pearcolator: [31] src/org/binarytranslator/arch/arm/decoder/ ARM_InstructionDecoders.java
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From: <mic...@us...> - 2007-04-12 17:34:58
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Revision: 31
http://svn.sourceforge.net/pearcolator/?rev=31&view=rev
Author: michael_baer
Date: 2007-04-12 10:34:57 -0700 (Thu, 12 Apr 2007)
Log Message:
-----------
Checked in Visitor pattern method that should have been committed in the last patch.
Modified Paths:
--------------
src/org/binarytranslator/arch/arm/decoder/ARM_InstructionDecoders.java
Modified: src/org/binarytranslator/arch/arm/decoder/ARM_InstructionDecoders.java
===================================================================
--- src/org/binarytranslator/arch/arm/decoder/ARM_InstructionDecoders.java 2007-04-12 17:31:57 UTC (rev 30)
+++ src/org/binarytranslator/arch/arm/decoder/ARM_InstructionDecoders.java 2007-04-12 17:34:57 UTC (rev 31)
@@ -50,6 +50,7 @@
return (value << (32 - bitsUsed)) >> (32 - bitsUsed);
}
+ /** A base class for all (conditional) ARM instructions. */
private abstract static class Basic {
/** @see #getCondition() */
protected final byte condition;
@@ -62,6 +63,9 @@
public final byte getCondition() {
return condition;
}
+
+ /** All instruction classes are meant to implement the visitor pattern. This is the pattern's visit method. */
+ public abstract void visit(ARM_InstructionVisitor visitor);
}
/** Base class for most instructions that use two registers. */
@@ -386,6 +390,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 26, 27) == 0;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a LDR/SDR instruction. */
@@ -459,6 +468,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 26, 27) == 1;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a normal (not long) multiply instruction. */
@@ -472,6 +486,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 22, 27) == 0 && getBits(instr, 4, 7) == 9;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a long multiply instruction. */
@@ -505,6 +524,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 23, 27) == 1 && getBits(instr, 4, 7) == 9;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a SWP/SWPB instruction. */
@@ -528,6 +552,11 @@
return getBits(instr, 23, 27) == 2 && getBits(instr, 20, 21) == 0
&& getBits(instr, 4, 11) == 9;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a LDM/STM instruction. */
@@ -608,6 +637,11 @@
public byte getBaseRegister() {
return baseRegister;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a SWI instruction*/
@@ -630,6 +664,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 24, 27) == 15;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a branch instruction. */
@@ -661,6 +700,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 25, 27) == 5;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a BX instruction set */
@@ -704,6 +748,11 @@
return getBits(instr, 25, 31) == 0x7D // BLX(1)
|| (getBits(instr, 20, 27) == 0x12 && getBits(instr, 6, 7) == 0); //BLX(2) && BX
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a LDC/STC instruction. */
@@ -777,6 +826,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 25, 27) == 6;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a CDP instruction. */
@@ -828,6 +882,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 24, 27) == 14 && !getBit(instr, 4);
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a MRC/MCR instruction. */
@@ -888,6 +947,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 24, 27) == 14 && getBit(instr, 4);
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a MRS instruction. */
@@ -920,6 +984,11 @@
public static boolean conforms(int instr) {
return getBits(instr, 23, 27) == 2 && getBits(instr, 16, 21) == 0 && (instr & 0xFFF) == 0;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
/** Represents a MSR instruction. */
@@ -993,5 +1062,47 @@
public static boolean conforms(int instr) {
return getBits(instr, 26, 27) == 0 && getBits(instr, 23, 24) == 2 && getBits(instr, 12, 15) == 0;
}
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
}
+
+ /** Represents a CLZ instruction. */
+ public final static class CountLeadingZeros extends Basic {
+
+ /** @see #getRm() */
+ protected final byte Rm;
+
+ /** @see #getRd() */
+ protected final byte Rd;
+
+ public CountLeadingZeros(int instr) {
+ super(instr);
+
+ Rm = (byte) (instr & 0xF);
+ Rd = (byte) getBits(instr, 12, 15);
+ }
+
+ /** Returns the source register for this operation. */
+ public byte getRm() {
+ return Rm;
+ }
+
+ /** Returns the destination register for this operation. */
+ public byte getRd() {
+ return Rd;
+ }
+
+ /** Checks if <code>instr</code> is a valid bit representation of this instruction type. */
+ public static boolean conforms(int instr) {
+ return getBits(instr, 16, 27) == 0x16F && getBits(instr, 4, 11) == 0xF1;
+ }
+
+ @Override
+ public void visit(ARM_InstructionVisitor visitor) {
+ visitor.visit(this);
+ }
+ }
}
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