Bug 1126 - Remove static query requirement of MachineDescriptor, find 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.

1 files changed, 6 insertions, 6 deletions

diff --git a/make/elf-header.cfg b/make/elf-header.cfg
index 53da3f6..c9c8be4 100644
--- a/make/elf-header.cfg
+++ b/make/elf-header.cfg
@@ -7,14 +7,14 @@ HierarchicalNativeOutput false
 #Implements Sym64 Sym
 
 # ELF-1 (part-1) is independent of CPUType/ABI
-# hence can use an arbitrary MachineDescriptor index
+# hence can use an arbitrary MachineDataInfo index
 # for reading the struct Ehdr_p1 !
-StructMachineDescriptorIndex Ehdr_p1 private static final int mdIdx = 0;
+StructMachineDataInfoIndex Ehdr_p1 private static final int mdIdx = 0;
 
 # The following sub structures shall use an mdIdx
 # defined by ELF-1 header code, set w/ ctor!
-StructMachineDescriptorIndex Ehdr_p2 private final int mdIdx;
-StructMachineDescriptorIndex Shdr private final int mdIdx;
+StructMachineDataInfoIndex Ehdr_p2 private final int mdIdx;
+StructMachineDataInfoIndex Shdr private final int mdIdx;
 
 ManuallyImplement Ehdr_p2.size
 ManuallyImplement Ehdr_p2.create
@@ -37,7 +37,7 @@ CustomJavaCode Ehdr_p2  }
 CustomJavaCode Ehdr_p2
 CustomJavaCode Ehdr_p2  Ehdr_p2(final int mdIdx, final java.nio.ByteBuffer buf) {
 CustomJavaCode Ehdr_p2      this.mdIdx = mdIdx;
-CustomJavaCode Ehdr_p2      this.md = MachineDescription.StaticConfig.values()[mdIdx].md;
+CustomJavaCode Ehdr_p2      this.md = MachineDataInfo.StaticConfig.values()[mdIdx].md;
 CustomJavaCode Ehdr_p2      this.accessor = new StructAccessor(buf);
 CustomJavaCode Ehdr_p2  }
 
@@ -55,7 +55,7 @@ CustomJavaCode Shdr  }
 CustomJavaCode Shdr
 CustomJavaCode Shdr  Shdr(final int mdIdx, final java.nio.ByteBuffer buf) {
 CustomJavaCode Shdr      this.mdIdx = mdIdx;
-CustomJavaCode Shdr      this.md = MachineDescription.StaticConfig.values()[mdIdx].md;
+CustomJavaCode Shdr      this.md = MachineDataInfo.StaticConfig.values()[mdIdx].md;
 CustomJavaCode Shdr      this.accessor = new StructAccessor(buf);
 CustomJavaCode Shdr  }