[PATCH] Add .eh_frame_hdr search to Linux unwinder.

[Dan Albert]

================
Comment at: src/Unwind/EHHeaderParser.hpp:111
@@ +110,3 @@
+  size_t high = hdrInfo.fdeCount;
+  while (low < high) {
+    size_t mid = (low + high) / 2;
----------------
danalbert wrote:
> jroelofs wrote:
> > The EHABI unwinder uses some library function for doing its binary search for the EHT entry. Maybe that can be re-used here too.
> I'll look in to that.
The case you were thinking of is https://github.com/llvm-mirror/libcxxabi/blob/master/src/Unwind/UnwindCursor.hpp#L676

That's a dependency on libc++, and you've been trying to fix the layering issues here. I don't think I'll add to them :)

http://reviews.llvm.org/D6848

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