From cf2eba666e6b959a9705de27c0203a2aad93c7b9 Mon Sep 17 00:00:00 2001
From: Matthew Macy <mmacy@freebsd.org>
Date: Wed, 16 Oct 2019 18:36:16 -0700
Subject: [PATCH] Add default case to lua kernel code

Some platforms, e.g. FreeBSD, support user space setjmp
semantics in kernel.

Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #9450
---
 module/lua/ldo.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/module/lua/ldo.c b/module/lua/ldo.c
index 59d0b6a2c2..3b0ece171c 100644
--- a/module/lua/ldo.c
+++ b/module/lua/ldo.c
@@ -46,6 +46,7 @@
 
 #ifdef _KERNEL
 
+#ifdef __linux__
 #if defined(__i386__)
 #define	JMP_BUF_CNT	6
 #elif defined(__x86_64__)
@@ -85,6 +86,11 @@ void longjmp (label_t * buf) {
 	for (;;);
 }
 #endif
+#else
+#define LUAI_THROW(L,c)		longjmp((c)->b, 1)
+#define LUAI_TRY(L,c,a)		if (setjmp((c)->b) == 0) { a }
+#define luai_jmpbuf		jmp_buf
+#endif
 
 #else /* _KERNEL */