Add 64-bit eh_frame section CFI support.
Add 64-bit eh_frame section CFI support.

In practice, 64bit eh_frame is not used even for x86_64 binaries. The main reason is in eh_frame we almost always use pc-relative addressing, so addresses are within 32bits and gcc just sticks to 32bit eh_frame.

I generated 64bit eh_frame for Android Java runtime and unwind successfully in gdb, and in lldb with this patch.

Patch by Tong Shen.


git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@216409 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb