From: Octavian Purdila <tavi@xxxxxxxxx>
This patch implements the init and exit calls for host code. It uses
the automatic __start_<section> and __stop_<section> variables that
are defined by gcc / ld when using custom sections.
Note that this patch should be merged with "um: move arch/um/os-Linux
dir to tools/um" but for now it is separate to make the review easier.
Signed-off-by: Octavian Purdila <tavi@xxxxxxxxx>
---
tools/um/uml/util.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/tools/um/uml/util.c b/tools/um/uml/util.c
index ecf2f390fad2..4011b36fee7e 100644
--- a/tools/um/uml/util.c
+++ b/tools/um/uml/util.c
@@ -186,3 +186,29 @@ void os_warn(const char *fmt, ...)
vfprintf(stderr, fmt, list);
va_end(list);
}
+
+extern void (*__start_os_exitcalls)(void);
+extern void (*__stop_os_exitcalls)(void);
+
+void os_exitcalls(void)
+{
+ exitcall_t *call;
+
+ call = &__stop_os_exitcalls;
+ while (--call >= &__start_os_exitcalls)
+ (*call)();
+}
+
+extern int (*__start_os_initcalls)(void);
+extern int (*__stop_os_initcalls)(void);
+
+int os_initcalls(void)
+{
+ initcall_t *call;
+
+ call = &__stop_os_initcalls;
+ while (--call >= &__start_os_initcalls)
+ (*call)();
+
+ return 0;
+}
--
2.21.0 (Apple Git-122.2)
