Started work on syscalls

1 files changed, 28 insertions, 0 deletions

diff --git a/common/uapi/ipc.c b/common/uapi/ipc.c
new file mode 100644
index 0000000..5abbaeb
--- /dev/null
+++ b/common/uapi/ipc.c
@@ -0,0 +1,28 @@
+#include <apos/uapi.h>
+#include <apos/tcb.h>
+
+vm_t sys_ipc_server(vm_t callback, vm_t u0, vm_t u1, vm_t u2)
+{
+	UNUSED(u0); UNUSED(u1); UNUSED(u2);
+	struct tcb *r = cur_tcb();
+	if(r->callback) /* server can't be reinitialized */
+		return 1;
+
+	r->callback = callback;
+	return 0;
+}
+
+vm_t sys_ipc_req(vm_t pid, vm_t d0, vm_t d1, vm_t d2)
+{
+	struct tcb *t = get_tcb(pid);
+	/* something like jump_to_callback(t, d0, d1, d2) */
+	return 0;
+}
+
+vm_t sys_ipc_resp(vm_t pid, vm_t ret, vm_t u0, vm_t u1)
+{
+	UNUSED(u0); UNUSED(u1);
+	struct tcb *r = get_tcb(pid);
+	/* something like return_from_callback(t, r) */
+	return 0; /* oh yeah probably unreachable? */
+}