runtime: Tweak __go_can_recover for SPARC.

From-SVN: r184117

diff --git a/libgo/runtime/go-recover.c b/libgo/runtime/go-recover.c
index 7101d518ade9bfb4eb4e29ccd946a03d29dba3c4..d6403e00d399178f71342397f8d918251c8ab74e 100644 (file)
--- a/libgo/runtime/go-recover.c
+++ b/libgo/runtime/go-recover.c
@@ -43,6 +43,14 @@ __go_can_recover (const void* retaddr)
      such as an instruction to adjust the stack pointer.  */
 
   ret = (const char *) retaddr;
+
+#ifdef __sparc__
+  /* On SPARC the address we get, from __builtin_return_address, is
+     the address of the call instruction.  Adjust forward, also
+     skipping the delayed instruction following the call.  */
+  ret += 8;
+#endif
+
   dret = (const char *) d->__retaddr;
   return ret <= dret && ret + 16 >= dret;
 }