dev: Fix incorrect terminal backlog handling

The Terminal device currently uses the peek functionality in gem5's
circular buffer implementation to send existing buffered content on
the terminal when a new client attaches. This functionallity is
however not implemented correctly and re-sends the same block multiple
time.

Add the required functionality to peek with an offset into the
circular buffer and change the Terminal::accept() implementation to
send the buffered contents.

Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Radhika Jagtap <radhika.jagtap@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/dev/terminal.cc b/src/dev/terminal.cc
index 53e593f85..9f0ea5ea3 100644
--- a/src/dev/terminal.cc
+++ b/src/dev/terminal.cc
@@ -204,7 +204,7 @@ Terminal::accept()
     char buf[1024];
     for (size_t i = 0; i < txbuf.size(); i += sizeof(buf)) {
         const size_t chunk_len(std::min(txbuf.size() - i, sizeof(buf)));
-        txbuf.peek(buf, chunk_len);
+        txbuf.peek(buf, i, chunk_len);
         write((const uint8_t *)buf, chunk_len);
     }
 }