wirish/syscalls.c: add weak exit function.

For toolchains which require an exit function.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/wirish/syscalls.c b/wirish/syscalls.c
index 1e62d51..a3b6d2c 100644
--- a/wirish/syscalls.c
+++ b/wirish/syscalls.c
@@ -168,3 +168,8 @@ __weak char *fgets(char *s, int bufsize, void *f) {
     cgets(s, bufsize);
     return s;
 }
+
+__weak void _exit(int exitcode) {
+    while (1)
+        ;
+}