From 54253948806cfe085fe5fe6b13ab8decac7fc1cf Mon Sep 17 00:00:00 2001
From: Bananymous <bananymousosq@gmail.com>
Date: Mon, 5 Jun 2023 18:19:13 +0300
Subject: [PATCH] Kernel: TTY now supports CSI s and u

These are commonly supported values to save and load cursor
position
---
 kernel/include/kernel/Terminal/TTY.h | 3 +++
 kernel/kernel/Terminal/TTY.cpp       | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/kernel/include/kernel/Terminal/TTY.h b/kernel/include/kernel/Terminal/TTY.h
index 0747e0e4f4..5886a23c89 100644
--- a/kernel/include/kernel/Terminal/TTY.h
+++ b/kernel/include/kernel/Terminal/TTY.h
@@ -84,6 +84,9 @@ namespace Kernel
 		uint32_t m_width { 0 };
 		uint32_t m_height { 0 };
 
+		uint32_t m_saved_row { 0 };
+		uint32_t m_saved_column { 0 };
+
 		uint32_t m_row { 0 };
 		uint32_t m_column { 0 };
 		Cell* m_buffer { nullptr };
diff --git a/kernel/kernel/Terminal/TTY.cpp b/kernel/kernel/Terminal/TTY.cpp
index e99c67bb2a..4fc724cae2 100644
--- a/kernel/kernel/Terminal/TTY.cpp
+++ b/kernel/kernel/Terminal/TTY.cpp
@@ -473,6 +473,14 @@ namespace Kernel
 			case 'm':
 				handle_ansi_csi_color();
 				return reset_ansi();
+			case 's':
+				m_saved_row = m_row;
+				m_saved_column = m_column;
+				return reset_ansi();
+			case 'u':
+				m_row = m_saved_row;
+				m_column = m_saved_column;
+				return reset_ansi();
 			default:
 				dprintln("Unsupported ANSI CSI character {}", ch);
 				return reset_ansi();