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-rw-r--r--libunwind/include/libunwind.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/libunwind/include/libunwind.h b/libunwind/include/libunwind.h
index d2ad5ab87122..b2dae8feed9a 100644
--- a/libunwind/include/libunwind.h
+++ b/libunwind/include/libunwind.h
@@ -876,6 +876,9 @@ enum {
UNW_MIPS_F29 = 61,
UNW_MIPS_F30 = 62,
UNW_MIPS_F31 = 63,
+ // HI,LO have been dropped since r6, we keep them here.
+ // So, when we add DSP/MSA etc, we can use the same register indexes
+ // for r6 and pre-r6.
UNW_MIPS_HI = 64,
UNW_MIPS_LO = 65,
};