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matthiasblaesingmatthiasblaesing
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Add arm softfloat variant as platform armel
- add prebuild arm softfloat binaries - add option to override prefix detection by specifying jna.prefix - add prefix autodetection to platform code. Autodetection is based on the JVM image - adjust build.xml to implement prefix detection Closes: java-native-access#753
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‎CHANGES.md

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@@ -9,6 +9,7 @@ Features
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--------
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* [#757](https://github.com/java-native-access/jna/issues/757): Build android archive (AAR) - [@matthiasblaesing](https://github.com/matthiasblaesing).
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* [#767](https://github.com/java-native-access/jna/pull/767): Add Win32 API mapping for Shlwapi PathIsUNC - [@ivanwick](https://github.com/ivanwick).
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* [#753](https://github.com/java-native-access/jna/issues/753): Support arm hardfloat and softfloat by introducing armel as platform (ARM EABI Little-endian) - [@matthiasblaesing](https://github.com/matthiasblaesing).
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* [#772](https://github.com/java-native-access/jna/pull/772): Improved speed of GDIUtil.getScreenshot() by ~30% - [@sommd](https://github.com/sommd).
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Bug Fixes

‎ant-elfanalyser-src/com/sun/jna/BuildArmSoftFloatDetector.java

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package com.sun.jna;
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import java.io.File;
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import java.io.IOException;
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import org.apache.tools.ant.Project;
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/**
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* Ant task to expose the arm soft-/hardfloat detection routines of the JNA core
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* for the build script.
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*
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* <p>The build script is expected to build a minimal set of classes that are
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* required to execute this. At the time of writing these are:</p>
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*
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* <ul>
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* <li>com.sun.jna.ELFAnalyser</li>
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* </ul>
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*/
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public class BuildArmSoftFloatDetector {
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private String targetProperty;
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private Project project;
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public void setProject(Project proj) {
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project = proj;
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}
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/**
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* targetProperty receives the name of the property, that should take the
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* new property
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*
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* @param targetProperty
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*/
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public void setTargetProperty(String targetProperty) {
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this.targetProperty = targetProperty;
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}
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public void execute() throws IOException {
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boolean result = false;
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// On linux /proc/self/exe is a symblink to the currently executing
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// binary (the JVM)
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File self = new File("/proc/self/exe");
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try {
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// The self.getCanonicalPath() resolves the symblink to the backing
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// realfile and passes that to the detection routines
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ELFAnalyser ahfd = ELFAnalyser.analyse(self.getCanonicalPath());
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result = ahfd.isArmSoftFloat();
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} catch (IOException ex) {
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result = false;
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}
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project.setNewProperty(targetProperty, Boolean.toString(result));
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}
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}

‎build.xml

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@@ -208,6 +208,17 @@
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<property name="test.classes" location="${build}/test-classes"/>
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<property name="reports" value="${build}/reports"/>
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<mkdir dir="${build}/ant-elfanalyser" />
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<javac classpath="lib/ant.jar" destdir="${build}/ant-elfanalyser" includeantruntime="false">
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<src path="src" />
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<src path="ant-elfanalyser-src" />
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<include name="**/ELFAnalyser.java" />
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<include name="**/BuildArmSoftFloatDetector.java" />
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</javac>
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<taskdef name="BuildArmSoftFloatDetector" classname="com.sun.jna.BuildArmSoftFloatDetector" classpath="${build}/ant-elfanalyser" />
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<BuildArmSoftFloatDetector targetProperty="build.isArmSoftFloat"/>
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<!-- Add other supported platforms here -->
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<condition property="jre.arch" value="x86">
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<matches pattern="(i[3456]86|pentium)" string="${os.arch}"/>
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<condition property="jre.arch" value="ppc64">
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<matches pattern="(powerpc64|power64)" string="${os.arch}"/>
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</condition>
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<condition property="jre.arch" value="armel">
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<and>
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<matches pattern="arm" string="${os.arch}"/>
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<matches pattern="true" string="${build.isArmSoftFloat}"/>
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</and>
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</condition>
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<property name="jre.arch" value="${os.arch}"/>
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<condition property="os.prefix" value="linux-${jre.arch}">
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<os name="Linux"/>
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</condition>
@@ -424,6 +443,8 @@ com/sun/jna/linux-x86-64/libjnidispatch.so;
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processor=x86-64;osname=linux,
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com/sun/jna/linux-arm/libjnidispatch.so;
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processor=arm;osname=linux,
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com/sun/jna/linux-armel/libjnidispatch.so;
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processor=armel;osname=linux,
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com/sun/jna/linux-aarch64/libjnidispatch.so;
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processor=aarch64;osname=linux,
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com/sun/jna/linux-ia64/libjnidispatch.so;
@@ -468,6 +489,9 @@ osname=macosx;processor=x86;processor=x86-64;processor=ppc
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<zipfileset src="${lib.native}/linux-arm.jar"
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includes="*jnidispatch*"
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prefix="com/sun/jna/linux-arm"/>
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<zipfileset src="${lib.native}/linux-armel.jar"
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includes="*jnidispatch*"
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prefix="com/sun/jna/linux-armel"/>
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<zipfileset src="${lib.native}/linux-aarch64.jar"
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includes="*jnidispatch*"
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prefix="com/sun/jna/linux-aarch64"/>
@@ -666,6 +690,7 @@ osname=macosx;processor=x86;processor=x86-64;processor=ppc
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<copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-x86.jar" overwrite="true"/>
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<copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-x86-64.jar" overwrite="true"/>
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<copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-arm.jar" overwrite="true"/>
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<copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-armel.jar" overwrite="true"/>
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<copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-aarch64.jar" overwrite="true"/>
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<copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-ia64.jar" overwrite="true"/>
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<copy file="${lib.native}/out-of-date.jar" tofile="${lib.native}/linux-ppc.jar" overwrite="true"/>
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<arg value="-Dgpg.useagent=true"/>
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</artifact:mvn>
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</target>
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</project>
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</project>

‎lib/ant.jar

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‎lib/native/linux-armel.jar

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‎nbproject/project.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://www.netbeans.org/ns/project/1">
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<type>org.netbeans.modules.ant.freeform</type>
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<configuration>
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<general-data xmlns="http://www.netbeans.org/ns/freeform-project/1">
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<name>JNA</name>
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</general-data>
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<general-data xmlns="http://www.netbeans.org/ns/freeform-project/2">
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<!-- Do not use Project Properties customizer when editing this file manually.
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To prevent the customizer from showing, create nbproject/project.properties file and enter
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auxiliary.show.customizer=false
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property there. Adding
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auxiliary.show.customizer.message=<message>
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will show your customized message when someone attempts to open the customizer. -->
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<name>JNA</name>
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<properties/>
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<folders>
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<source-folder>
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<label>JNA</label>
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<location>.</location>
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<encoding>UTF-8</encoding>
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</source-folder>
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<source-folder>
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<label>src</label>
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<type>java</type>
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<location>src</location>
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<encoding>UTF-8</encoding>
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</source-folder>
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<source-folder>
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<label>test</label>
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<type>java</type>
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<location>test</location>
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<encoding>UTF-8</encoding>
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</source-folder>
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<source-folder>
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<label>ant-elfanalyser-src</label>
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<type>java</type>
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<location>ant-elfanalyser-src</location>
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<encoding>UTF-8</encoding>
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</source-folder>
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</folders>
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<ide-actions>
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<action name="build">
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<target>jar</target>
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</action>
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<action name="clean">
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<target>clean</target>
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</action>
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<action name="javadoc">
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<target>javadoc</target>
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</action>
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<action name="test">
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<target>test</target>
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</action>
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<action name="rebuild">
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<target>clean</target>
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<target>jar</target>
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</action>
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</ide-actions>
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<view>
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<items>
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<source-folder style="packages">
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<label>src</label>
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<location>src</location>
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</source-folder>
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<source-folder style="packages">
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<label>test</label>
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<location>test</location>
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</source-folder>
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<source-folder style="packages">
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<label>ant-elfanalyser-src</label>
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<location>ant-elfanalyser-src</location>
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</source-folder>
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<source-file>
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<location>build.xml</location>
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</source-file>
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</items>
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<context-menu>
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<ide-action name="build"/>
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<ide-action name="rebuild"/>
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<ide-action name="clean"/>
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<ide-action name="javadoc"/>
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<ide-action name="test"/>
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</context-menu>
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</view>
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<subprojects/>
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</general-data>
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<java-data xmlns="http://www.netbeans.org/ns/freeform-project-java/2">
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<compilation-unit>
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<package-root>src</package-root>
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<classpath mode="compile">src</classpath>
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<source-level>1.5</source-level>
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</compilation-unit>
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<compilation-unit>
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<package-root>test</package-root>
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<unit-tests/>
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<classpath mode="compile">lib/hamcrest-core-1.3.jar:lib/junit.jar:lib/test/dom4j-1.6.1.jar:lib/test/guava-11.0.2.jar:lib/test/javassist-3.12.1.GA.jar:lib/test/reflections-0.9.8.jar:lib/test/slf4j-api-1.6.1.jar:src</classpath>
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<source-level>1.5</source-level>
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</compilation-unit>
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<compilation-unit>
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<package-root>ant-elfanalyser-src</package-root>
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<classpath mode="compile">src:lib/ant.jar</classpath>
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<source-level>1.5</source-level>
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</compilation-unit>
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</java-data>
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</configuration>
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</project>

‎src/com/sun/jna/ELFAnalyser.java

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package com.sun.jna;
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import java.io.IOException;
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import java.io.RandomAccessFile;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.Arrays;
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/**
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* Analyse an ELF file for platform specific attributes.
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*
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* <p>Primary use-case: Detect whether the java binary is arm hardfloat or softfloat.</p>
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*/
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class ELFAnalyser {
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/**
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* Generic ELF header
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*/
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private static final byte[] ELF_MAGIC = new byte[]{(byte) 0x7F, (byte) 'E', (byte) 'L', (byte) 'F'};
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/**
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* e_flags mask if executable file conforms to hardware floating-point
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* procedure-call standard (arm ABI version 5)
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*/
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private static final int EF_ARM_ABI_FLOAT_HARD = 0x00000400;
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/**
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* e_flags mask if executable file conforms to software floating-point
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* procedure-call standard (arm ABI version 5)
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*/
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private static final int EF_ARM_ABI_FLOAT_SOFT = 0x00000200;
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private static final int EI_DATA_BIG_ENDIAN = 2;
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private static final int E_MACHINE_ARM = 0x28;
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private static final int EI_CLASS_64BIT = 2;
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public static ELFAnalyser analyse(String filename) throws IOException {
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ELFAnalyser res = new ELFAnalyser(filename);
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res.runDetection();
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return res;
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}
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private final String filename;
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private boolean ELF = false;
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private boolean _64Bit = false;
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private boolean bigEndian = false;
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private boolean armHardFloat = false;
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private boolean armSoftFloat = false;
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private boolean arm = false;
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/**
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* @return true if the parsed file was detected to be an ELF file
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*/
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public boolean isELF() {
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return ELF;
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}
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/**
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* @return true if the parsed file was detected to be for a 64bit architecture
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* and pointers are expected to be 8byte wide
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*/
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public boolean is64Bit() {
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return _64Bit;
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}
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/**
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* @return true if the parsed file is detected to be big endian, false if
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* the file is little endian
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*/
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public boolean isBigEndian() {
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return bigEndian;
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}
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/**
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* @return filename of the parsed file
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*/
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public String getFilename() {
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return filename;
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}
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/**
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* @return true if file was detected to conform to the hardware floating-point
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* procedure-call standard
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*/
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public boolean isArmHardFloat() {
83+
return armHardFloat;
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}
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/**
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* @return true if file was detected to conform to the software floating-point
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* procedure-call standard
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*/
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public boolean isArmSoftFloat() {
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return armSoftFloat;
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}
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/**
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* @return true if the parsed file was detected to be build for the arm
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* architecture
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*/
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public boolean isArm() {
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return arm;
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}
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private ELFAnalyser(String filename) {
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this.filename = filename;
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}
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private void runDetection() throws IOException {
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// run precheck - only of if the file at least hold an ELF header parsing
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// runs further.
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RandomAccessFile raf = new RandomAccessFile(filename, "r");
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if (raf.length() > 4) {
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byte[] magic = new byte[4];
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raf.seek(0);
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raf.read(magic);
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if (Arrays.equals(magic, ELF_MAGIC)) {
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ELF = true;
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}
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}
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if (!ELF) {
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return;
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}
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raf.seek(4);
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// The total header size depends on the pointer size of the platform
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// so before the header is loaded the pointer size has to be determined
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byte sizeIndicator = raf.readByte();
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_64Bit = sizeIndicator == EI_CLASS_64BIT;
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raf.seek(0);
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ByteBuffer headerData = ByteBuffer.allocate(_64Bit ? 64 : 52);
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raf.getChannel().read(headerData, 0);
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bigEndian = headerData.get(5) == EI_DATA_BIG_ENDIAN;
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headerData.order(bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN);
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arm = headerData.get(0x12) == E_MACHINE_ARM;
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if(arm) {
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int flags = headerData.getInt(_64Bit ? 0x30 : 0x24);
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armSoftFloat = (flags & EF_ARM_ABI_FLOAT_SOFT) == EF_ARM_ABI_FLOAT_SOFT;
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armHardFloat = (flags & EF_ARM_ABI_FLOAT_HARD) == EF_ARM_ABI_FLOAT_HARD;
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}
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}
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}

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