In some cases, shutdown through the test device and Bochs might fail.
Just hang in a loop that executes halt in such cases.
Signed-off-by: Nadav Amit <nadav.amit@xxxxxxxxx>
---
lib/x86/io.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/lib/x86/io.c b/lib/x86/io.c
index f3e01f7..e6372c6 100644
--- a/lib/x86/io.c
+++ b/lib/x86/io.c
@@ -99,6 +99,10 @@ void exit(int code)
#else
asm volatile("out %0, %1" : : "a"(code), "d"((short)0xf4));
#endif
+ /* Fallback */
+ while (1) {
+ asm volatile ("hlt" ::: "memory");
+ }
__builtin_unreachable();
}
--
2.17.1
