kernel: Add __TRY_CALL() macro

This commit adds a macro to make testing if weak functions
are implemented, then running them, less messy. This allows you
to do so in one line.

Signed-off-by: Ian Moffett <ian@osmora.org>

2 files changed, 10 insertions, 8 deletions

diff --git a/sys/include/sys/cdefs.h b/sys/include/sys/cdefs.h
index 59c81d4..da78510 100644
--- a/sys/include/sys/cdefs.h
+++ b/sys/include/sys/cdefs.h
@@ -154,6 +154,13 @@
 #define __MODULE_NAME(name) \
     __used static const char *__THIS_MODULE = name
 
+/*
+ * Attempts to call a __weak function. Does nothing
+ * if routine not implemented.
+ */
+#define __TRY_CALL(routine, ...) \
+    if (routine != NULL) routine(__VA_ARGS__)
+
 #else
 
 /*
diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index a5d7577..2666b5e 100644
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -76,7 +76,7 @@ main(void)
 {
     struct cpu_info *ci;
 
-    pre_init();
+    __TRY_CALL(pre_init);
     tty_init();
     syslog_init();
     PRINT_LOGO();
@@ -86,18 +86,13 @@ main(void)
             HYRA_BUILDBRANCH);
 
     acpi_init();
-
-    if (chips_init == NULL) {
-        chips_init();
-    }
+    __TRY_CALL(chips_init);
 
     processor_init();
     list_timers();
 
     ci = this_cpu();
-    if (ap_bootstrap != NULL) {
-        ap_bootstrap(ci);
-    }
+    __TRY_CALL(ap_bootstrap, ci);
 
     sched_init_processor(ci);
     __builtin_unreachable();