1 files changed, 3 insertions, 1 deletions

diff --git a/src/lj_ir.h b/src/lj_ir.h
index 6dee36c6..1cb3566e 100644
--- a/src/lj_ir.h
+++ b/src/lj_ir.h
@@ -251,11 +251,13 @@ typedef struct CCallInfo {
 #define CCI_CASTU64             0x0200  /* Cast u64 result to number. */
 #define CCI_NOFPRCLOBBER        0x0400  /* Does not clobber any FPRs. */
 #define CCI_FASTCALL            0x0800  /* Fastcall convention. */
+#define CCI_STACK64             0x1000  /* Needs 64 bits per argument. */
 
 /* Function definitions for CALL* instructions. */
 #if LJ_HASFFI
 #define IRCALLDEF_FFI(_) \
-  _(lj_carith_powi64,   3,   N, U64, CCI_NOFPRCLOBBER)
+  _(lj_carith_powi64,   2,   N, I64, CCI_STACK64|CCI_NOFPRCLOBBER) \
+  _(lj_carith_powu64,   2,   N, U64, CCI_STACK64|CCI_NOFPRCLOBBER)
 #else
 #define IRCALLDEF_FFI(_)
 #endif