From 022c31eefaa0c11fbc069fd35cf5311a556c9ae5 Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Fri, 24 Jan 2014 13:05:11 +0100
Subject: Bug 856 - Android: Support dual ABI (x86 i686 *and* ARMv7arm), i.e.
 pick 'best' ABI

- Use 'os.arch' as a prelim CPUType for MachineDescription

- Always attempt to load a binary and parse it's elf header
  - Linux: self-exe
  - Android: gluegen-rt library
  - Other: java lib

- Always use details (ABI) if ARM

- Android: Check CPU_TYPE and CPU_TYPE2

// FIXME / HACK:
//   We use sCPUType for MachineDescriptionRuntime.getStatic()
//   until we have determined the final CPU_TYPE, etc.
//   MachineDescriptionRuntime gets notified via MachineDescriptionRuntime.notifyPropsInitialized() below.
//
//   We could use Elf Ehdr's machine value to determine the bit-size
//   used for it's offset table!
//   However, 'os.arch' should be a good guess for this task.

Tested manually on
  - Linux x86, x86_64, armhf (raspi)
  - Android intel and arm
  - Windows x86_64
  - OSX x86_64
---
 src/java/jogamp/common/os/elf/ElfHeader.java | 36 +++++++++++++++++++++++++---
 1 file changed, 33 insertions(+), 3 deletions(-)

(limited to 'src/java/jogamp/common/os/elf/ElfHeader.java')

diff --git a/src/java/jogamp/common/os/elf/ElfHeader.java b/src/java/jogamp/common/os/elf/ElfHeader.java
index e6645b6..f12ccad 100644
--- a/src/java/jogamp/common/os/elf/ElfHeader.java
+++ b/src/java/jogamp/common/os/elf/ElfHeader.java
@@ -461,13 +461,37 @@ public class ElfHeader {
     /**
      * Returns true if {@link #getMachine() machine} is a 32 or 64 bit Intel CPU
      * of type {@link #EM_386}, {@link #EM_486} or {@link #EM_X86_64}. */
-    public final boolean isIntel() {
+    public final boolean isX86_32() {
         final short m = getMachine();
         return EM_386 == m ||
                EM_486 == m ||
                EM_X86_64 == m;
     }
 
+    /**
+     * Returns true if {@link #getMachine() machine} is a 64 bit AMD/Intel x86_64 CPU
+     * of type {@link #EM_X86_64}. */
+    public final boolean isX86_64() {
+        return getMachine() == EM_X86_64;
+    }
+
+    /**
+     * Returns true if {@link #getMachine() machine} is a 64 bit Intel Itanium CPU
+     * of type {@link #EM_IA_64}. */
+    public final boolean isIA64() {
+        return getMachine() == EM_IA_64;
+    }
+
+    /**
+     * Returns true if {@link #getMachine() machine} is a 32 or 64 bit MIPS CPU
+     * of type {@link #EM_MIPS}, {@link #EM_MIPS_X} or {@link #EM_MIPS_RS3_LE}. */
+    public final boolean isMips() {
+        final short m = getMachine();
+        return EM_MIPS == m ||
+               EM_MIPS_X == m ||
+               EM_MIPS_RS3_LE == m;
+    }
+
     /** Returns the processor-specific flags associated with the file. */
     public final int getFlags() {
         return d.getE_flags();
@@ -536,8 +560,14 @@ public class ElfHeader {
         final String machineS;
         if( isArm() ) {
             machineS=", arm";
-        } else if( isIntel() ) {
-            machineS=", intel";
+        } else if( isX86_64() ) {
+            machineS=", x86_64";
+        } else if( isX86_32() ) {
+            machineS=", x86_32";
+        } else if( isIA64() ) {
+            machineS=", itanium";
+        } else if( isMips() ) {
+            machineS=", mips";
         } else {
             machineS="";
         }
-- 
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