generalization of syscalls

Common/Std/stub.c

@@ -1,5 +1,8 @@
 #include "../std.h"
 
+#include <stdbool.h>
+#include <stddef.h>
+
 void *com_std_alloc(void *ptr, size_t size) { return NULL; }
 void com_std_assert(bool holds) {}
 void com_std_printf(char const *fmt, ...) {}
@@ -15,6 +18,24 @@ double com_std_sin(double v) { return 0; }
 double com_std_cos(double v) { return 0; }
 #endif
 
+com_std_fd com_std_open(char *path, uint32_t flags) { return NULL; }
+bool com_std_write(com_std_fd fd, char const *data, uint32_t bytes) {
+  return false;
+}
+int32_t com_std_read(com_std_fd fd, char *data, uint32_t upto) { return -1; }
+bool com_std_sfwd(com_std_fd fd, uint32_t bytes) { return false; }
+com_std_fd com_std_socket(bool isnetwork) { return NULL; }
+bool com_std_connect(com_std_fd fd, bool isnetwork, char *address) {
+  return false;
+}
+void com_std_exit(uint32_t status) {
+  __builtin_trap();
+  while (1) {
+  }
+  __builtin_unreachable();
+}
+void com_std_close(com_std_fd fd) { return; }
+
 // void memcpy(void *__restrict dest, const void *__restrict src, size_t n) {
 //   __builtin_memcpy(dest, src, n);
 // };