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matching StaticConfig at runtime; Fix PPC (Bug 1056) and MIPSLE (Bug 1014) issues.
Currently the StaticConfig is being queried
via the key[OSType, CPUType ..]
as pre-determined by Java properties or the ELF parser.
This adds complication to maintain different platforms
and the key query might not even be sufficient.
The MachineDescriptor's StaticConfig only purpose shall be
to speed-up native data size and offset/alignment retrieval.
This is done by using the StaticConfig index within
all StaticConfig[]s as a lookup-index for the precomputed
struct's size and offset tables.
+++
Solution:
Rename: MachineDescriptor -> MachineDataInfo
Rename: MachineDescriptorRuntime -> MachineDataInfoRuntime
After having defined os.and.arch (OSType, CPUType and ABIType)
w/ the optional help of the now self containing ELF Reader (Bug 1125),
the native gluegen-rt library gets loaded enabling JNI methods.
It is satisfactory to retrieve MachineDataInfo
at runtime w/ JNI and find the matching/compatible StaticConfig.
Only in case none is found, the program needs to abort.
Otherwise the found MachineDataInfo.StaticConfig and MachineDataInfo
are stored for further use (see above).
This removes above complication and key to StaticConfig mapping.
New platforms simply need to add a new unique entry into the
StaticConfig[] table.
++
Also fixes Bug 1056 (PPC), thanks to tmancill [@] debian [.] org,
and Bug 1014 (MIPSLE), thanks to Dejan Latinovic.
Parts of the patch for Bug 1014 from Dejan Latinovic are included.
also solved by this change set.
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ELF Reader 'jogamp.common.os.elf' currently uses
Platform's pre-determined OS_TYPE and CPUType.
It also uses the host platforms MachineDescription,
hence can not read ELF files from other machines.
This also forbids Platform to determine CPUType etc
w/o having a valid 'os.arch' property.
+++
ElfHeader should be split in
- ElfHeaderPart1 (CPUType independent)
- ElfHeaderPart2 (CPUType dependent)
Fix shall make the ELF Reader self containing
by only using ELF CPUType data, etc.
This requires customization of struct parsing,
where MachineDescription.Static index shall be
- defined in ElfHeaderPart1 using e_Ident's CPUType.
- used in ElfHeaderPart2 and all its struct types.
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Shdr and Ehdr via GlueGen
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c47bc86ae2ee268a1f38c5580d11f93d7f8d6e74)
Code Clean-Up based on our Recommended Settings (jogamp-scripting c47bc86ae2ee268a1f38c5580d11f93d7f8d6e74)
- Change non static accesses to static members using declaring type
- Change indirect accesses to static members to direct accesses (accesses through subtypes)
- Add final modifier to private fields
- Add final modifier to method parameters
- Add final modifier to local variables
- Remove unnecessary casts
- Remove unnecessary '$NON-NLS$' tags
- Remove trailing white spaces on all lines
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readUInt32(..) must return long due to EOF
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'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
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Signed-off-by: Harvey Harrison <[email protected]>
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Signed-off-by: Harvey Harrison <[email protected]>
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to distinguish ARM soft-float/hard-float (part-2)
+ /**
+ * Returns the {@link ABIType} of the current platform using given {@link CPUType cpuType}
+ * and {@link OSType osType} as a hint.
+ * <p>
+ * Note the following queries are performed:
+ * <ul>
+ * <li> not {@link CPUFamily#ARM} -> {@link ABIType#GENERIC_ABI} </li>
+ * <li> else
+ * <ul>
+ * <li> not {@link OSType#LINUX} -> {@link ABIType#EABI_GNU_ARMEL} </li>
+ * <li> else
+ * <ul>
+ * <li> Elf ARM Tags -> {@link ABIType#EABI_GNU_ARMEL}, {@link ABIType#EABI_GNU_ARMHF} </li>
+ * </ul></li>
+ * </ul></li>
+ * </ul>
+ * </p>
+ * <p>
+ * Elf ARM Tags are read using {@link ElfHeader}, .. and {@link SectionArmAttributes#abiVFPArgsAcceptsVFPVariant(byte)}.
+ * </p>
+ *
+ * @param cpuType
+ * @param osType
+ * @return
+ */
+ private static final ABIType queryABITypeImpl(CPUType cpuType, OSType osType) {
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distinguish ARM soft-float/hard-float (part-1)
https://jogamp.org/bugzilla/show_bug.cgi?id=681
+ * References:
+ * <ul>
+ * <li>http://linux.die.net/man/5/elf</li>
+ * <li>http://www.sco.com/developers/gabi/latest/contents.html</li>
+ * <li>http://infocenter.arm.com/
+ * <ul>
+ * <li>ARM IHI 0044E, current through ABI release 2.09</li>
+ * <li>ARM IHI 0045D, current through ABI release 2.09</li>
+ * </ul></li>
Added self contained jogamp.common.os.elf package w/ entry point class ElfHeader
to read a RandomAccessFile and parse it as an ELF file.
ELF Parsing completness:
- Header: OK
- SectionHeader: OK
- Section Type SHT_ARM_ATTRIBUTES: OK
- Will be read into SectionArmAttributes
- Used to distinguisgh soft/hard VFP float
Tested manually on:
- Linux intel 32bit / 64bit, arm soft-float and hard-float
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