Add pseudoteletypewriter to emulator

https://justine.storage.googleapis.com/emulator628.mp4
2020-08-26 23:08:08 -07:00
parent e86cff8ba0
commit 5aabacb361
94 changed files with 3245 additions and 2179 deletions
--- a/dsp/tty/ttyraw.c
+++ b/dsp/tty/ttyraw.c
@@ -101,7 +101,9 @@ static relegated void ttyraw_onsig(int sig, struct siginfo *info,
    if (g_ttyraw.sigs[i] == sig) {
      if (g_ttyraw.next[i] != SIG_IGN) {
        if (g_ttyraw.next[i] != SIG_DFL) {
-          g_ttyraw.next[i](sig, info, ctx);
+          if (g_ttyraw.next[i]) {
+            g_ttyraw.next[i](sig, info, ctx);
+          }
        } else if (sig != SIGCONT) {
          _Exit(128 + sig);
        }