diff -uprN a/include/libunwind-mips.h b/include/libunwind-mips.h
--- a/include/libunwind-mips.h	2012-10-06 12:54:38.000000000 +0800
+++ b/include/libunwind-mips.h	2016-06-08 13:55:55.029436442 +0800
@@ -111,6 +111,42 @@ typedef enum
   }
 mips_regnum_t;
 
+#ifndef __GLIBC__
+#include <sys/reg.h>
+
+/* musl as of 1.1.14 does not export these */
+#define EF_REG0			6
+#define EF_REG1			7
+#define EF_REG2			8
+#define EF_REG3			9
+#define EF_REG4			10
+#define EF_REG5			11
+#define EF_REG6			12
+#define EF_REG7			13
+#define EF_REG8			14
+#define EF_REG9			15
+#define EF_REG10		16
+#define EF_REG11		17
+#define EF_REG12		18
+#define EF_REG13		19
+#define EF_REG14		20
+#define EF_REG15		21
+#define EF_REG16		22
+#define EF_REG17		23
+#define EF_REG18		24
+#define EF_REG19		25
+#define EF_REG20		26
+#define EF_REG21		27
+#define EF_REG22		28
+#define EF_REG23		29
+#define EF_REG24		30
+#define EF_REG25		31
+#define EF_REG28		34
+#define EF_REG29		35
+#define EF_REG30		36
+#define EF_REG31		37
+#endif
+
 typedef enum
   {
     UNW_MIPS_ABI_O32,