The C6XABI defined persoality routines ID 3 and 4 use a single 24-bit block 
word of unwinding data.  Patch below makes sure this is preserved, rather than 
treating it as a set of unwinding opcode bytes.

I seem to have lost this bit of code when I merged the ARM and c6x 
implementations.

Applied to svn trunk.

Paul

2011-10-03  Paul Brook  <p...@codesourcery.com>

        libgcc/
        * unwind-arm-common.inc: Handle ID3/4 unwinding data.

Index: libgcc/unwind-arm-common.inc
===================================================================
--- libgcc/unwind-arm-common.inc        (revision 179178)
+++ libgcc/unwind-arm-common.inc        (working copy)
@@ -583,7 +583,7 @@ __gnu_unwind_pr_common (_Unwind_State st
       uws.words_left = 0;
       uws.bytes_left = 3;
     }
-  else
+  else if (id < 3)
     {
       uws.words_left = (uws.data >> 16) & 0xff;
       uws.data <<= 16;

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