Add kalimba as a platform.

This change comprises of additions and some minor changes in order that
"kalimba" is listed as a supported platform and that debugging any
kalimbas results in PlatformKalimba being associated with the target.

The changes are as follows:

* The PlatformKalimba implementation itself
* A tweak to ArchSpec
* .note parsing for Kalimba in ObjectFileELF.cpp
* Plugin registration
* Makefile additions

Change by Matthew Gardiner

Minor tweak for cmake and Xcode by Todd Fiala

Tested:
Ubuntu 14.04 x86_64, clang 3.5-built lldb, all tests pass.
MacOSX 10.9.4, Xcode 6.0 Beta 1-built lldb, all tests pass.

llvm-svn: 213158

1 files changed, 19 insertions, 0 deletions

diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
index 50cdd18a8fb..bd819c44930 100644
--- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -46,6 +46,7 @@ namespace {
 const char *const LLDB_NT_OWNER_FREEBSD = "FreeBSD";
 const char *const LLDB_NT_OWNER_GNU     = "GNU";
 const char *const LLDB_NT_OWNER_NETBSD  = "NetBSD";
+const char *const LLDB_NT_OWNER_CSR     = "csr";
 
 // ELF note type definitions
 const elf_word LLDB_NT_FREEBSD_ABI_TAG  = 0x01;
@@ -1221,6 +1222,24 @@ ObjectFileELF::RefineModuleDetailsFromNote (lldb_private::DataExtractor &data, l
             if (log)
                 log->Printf ("ObjectFileELF::%s detected NetBSD, min version constant %" PRIu32, __FUNCTION__, version_info);
         }
+        // Process CSR kalimba notes
+        else if ((note.n_type == LLDB_NT_GNU_ABI_TAG) &&
+                (note.n_name == LLDB_NT_OWNER_CSR))
+        {
+            // We'll consume the payload below.
+            processed = true;
+            arch_spec.GetTriple().setOS(llvm::Triple::OSType::UnknownOS);
+            arch_spec.GetTriple().setVendor(llvm::Triple::VendorType::CSR);
+
+            // TODO At some point the description string could be processed.
+            // It could provide a steer towards the kalimba variant which
+            // this ELF targets.
+            if(note.n_descsz)
+            {
+                const char *cstr = data.GetCStr(&offset, llvm::RoundUpToAlignment (note.n_descsz, 4));
+                (void)cstr;
+            }
+        }
 
         if (!processed)
             offset += llvm::RoundUpToAlignment(note.n_descsz, 4);