Not set mips on mips r6 MIPS release changed encodes of some instructions, include ll/sc etc. if .set mips4 on mips r6, as will generate some wrong encode of some instructions.
diff --git a/src/mips/n32.S b/src/mips/n32.S
index edc6905..1a940b6 100644
--- a/src/mips/n32.S
+++ b/src/mips/n32.S
@@ -47,7 +47,9 @@
#ifdef __GNUC__
.abicalls
#endif
+#if !defined(__mips_isa_rev) || (__mips_isa_rev<6)
.set mips4
+#endif
.text
.align 2
.globl ffi_call_N32