Move all syscalls into one file

ulib/system/system.c

@@ -7,3 +7,14 @@ void debugprint(const char *string) {
   syscall(SYS_DEBUGPRINT, (uint64_t)string, 0, 0, 0, 0, 0);
 }
 
+int32_t ioctl(uint64_t ioh, uint64_t cmd, uint64_t arg1, uint64_t arg2, uint64_t arg3) {
+  return syscall(SYS_IOCTL, ioh, cmd, arg1, arg2, arg3, 0);
+}
+
+int32_t processctl(uint64_t pid, uint64_t cmd, void *extra) {
+  return syscall(SYS_PROCESSCTL, pid, cmd, (uint64_t)extra, 0, 0, 0);
+}
+
+int32_t ipcpipe(uint64_t pid, uint64_t pipenum, uint64_t cmd, uint8_t *buffer, size_t len) {
+  return syscall(SYS_IPCPIPE, pid, pipenum, cmd, (uint64_t)buffer, (uint64_t)len, 0);
+}