Initial commit

- create subsystem system using clone syscall, shared memory, shared
  file descriptors
- printk-like logging facility (TODO: console loglevel)
- initcall system (like linux kernel)

TODO: determine license
factors: linker.ld, linux kernel licensing (some ideas are more
  liberally taken rather than paraphrased)

1 files changed, 23 insertions, 0 deletions

diff --git a/include/init.h b/include/init.h
new file mode 100644
index 0000000..c9d8cba
--- /dev/null
+++ b/include/init.h
@@ -0,0 +1,23 @@
+#ifndef __INIT_H
+#define __INIT_H
+
+typedef int (*initcall_t)(void);
+typedef initcall_t initcall_entry_t;
+
+#define __define_initcall(fn, id) \
+    static initcall_t __initcall_##fn##id \
+    __attribute__((used)) \
+    __attribute__((section(".initcall" #id ".init"))) = fn
+
+#define l1_initcall(fn) __define_initcall(fn, 1)
+#define l2_initcall(fn) __define_initcall(fn, 2)
+#define l3_initcall(fn) __define_initcall(fn, 3)
+#define l4_initcall(fn) __define_initcall(fn, 4)
+#define l5_initcall(fn) __define_initcall(fn, 5)
+
+static inline initcall_t initcall_from_entry(initcall_entry_t *entry)
+{
+    return *entry;
+}
+
+#endif