From 8b93cd18bc1ff2ec1cfd96ead5ff5606cbc35831 Mon Sep 17 00:00:00 2001
From: Hanjie Wu <hanjiew@andrew.cmu.edu>
Date: Sun, 23 Apr 2023 12:41:16 -0400
Subject: toad

---
 kern/kernel.c       |  4 +++-
 kern/syscall_misc.c |  2 +-
 kern/toad.c         | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 66 insertions(+), 2 deletions(-)
 create mode 100644 kern/toad.c

(limited to 'kern')

diff --git a/kern/kernel.c b/kern/kernel.c
index 33a7c09..5599e95 100644
--- a/kern/kernel.c
+++ b/kern/kernel.c
@@ -32,6 +32,8 @@
 #include <sched.h>
 #include <timer.h>
 
+void print_toad();
+
 /**
  * @brief entry for a cpu core
  * @param cpuid cpuid
@@ -64,7 +66,7 @@ int kernel_main(mbinfo_t* mbinfo, int argc, char** argv, char** envp) {
     mm_init();
     timer_init();
     pv_init();
-    clear_console();
+    print_toad();
 
     const char* init_args[] = {INIT_NAME};
     thread_t* init = create_process(INIT_PID, INIT_NAME, 1, init_args);
diff --git a/kern/syscall_misc.c b/kern/syscall_misc.c
index 4d0dd25..8bcacf1 100644
--- a/kern/syscall_misc.c
+++ b/kern/syscall_misc.c
@@ -150,7 +150,7 @@ static reg_t read_dot_file(va_t buf, int count, int offset) {
         i++;
     }
     /* write extra null byte */
-    if (left != 0) {
+    if (left != 0 && cur == offset) {
         char nul = '\0';
         if (copy_to_user((va_t)buf + written, 1, &nul) != 0) {
             return (reg_t)-1;
diff --git a/kern/toad.c b/kern/toad.c
new file mode 100644
index 0000000..a83deaf
--- /dev/null
+++ b/kern/toad.c
@@ -0,0 +1,62 @@
+#include <console.h>
+
+const char toad[] =
+    "..:.         ......::..  ..^7JYYJJJJJYJJJJ??7~^:..         ^~^^:........  "
+    "      "
+    ".....        .....:.. .^!?JPGB#BBBBBBGGGGGGGP5J7~:..        ^~^:......... "
+    "      "
+    "....           ..:...!P#########BBBBGGGGGGGGGP5Y?~:..       "
+    ".^::...........     "
+    "...             ...^Y#&&&&&##BBBBBBGPP555PPPPYY?!^:..        ...    "
+    "............"
+    "                ..:?B#&&&&&&##BBBBBGPP55PP55YJ?7~:...                "
+    "..........."
+    "                ..^5B#&&&&&###B##B#BBGGGGP5Y??"
+    "!!^..                   "
+    ".........."
+    "                ..7PB#&&&&&#B###B#&#GGPPP55YJ7!!^:.                    "
+    "........."
+    "                 :75B#&&#BBGGPG#PBBY?77?JJJ7!7!~^^.                    "
+    "........."
+    "   .             .~5GG#BGYYJ?7PBY?7?YPPP5YJ7~:~!::..  ........         "
+    ".......  "
+    ".........    ..  ::^5GBG5?!~^.7Y::7YJ!!~:^^~!^.7^^:^^^^^:..:.^          "
+    ".....   "
+    ".................^: YBY77^::^^   :^~7JYY?77?JY^:?7!!~~~~:.:^::           "
+    "....   "
+    "................ YPJJPGP5J!!J!~G7..^??JJJY555Y!^?777!~~!!.:^^.         "
+    "........ "
+    "....::::.........7##BGGPYJ?JJ~##P!. :7J555YYJ?^!77!!!!!7!^^~~.         "
+    "........ "
+    "...:::::::::......7GB#PYY??J?P&GY77!~:^!!!~~~^~~~!!!!77?77??: "
+    ".................."
+    "..:::::::::::......JPY?!~^!5J7J!^...:^^!!!!~~^^^^~7777??J5?^.............."
+    "......"
+    "^^^^~~~~~^^^^::::::7GPJ~!5BBGGGJ?77????7!~^~^^!!!!!!7!7?7^................"
+    "......"
+    "77777???7777!!!!!!!7P5!!YGB###BGP5J77!~:.:^!!??"
+    "!~~~~~~~7!................."
+    "......"
+    "YYYYYYYYYYYYYYYYYYYJ5GP55YJ!^~!77~!^::::^~!7??"
+    "!~~^^^^^^~~^::::::::........"
+    "......"
+    "PPPPPPPPPPPPPPPPPPPPPPGPP5GBGPPPP5J?77777777!~~^:::::::^7?777!!!~~~~^^^^^:"
+    "::::::"
+    "BBBBBBBBBBBBBBBBBBBBBBG55PB###BPYJ??777777?!^:::::::::!G77Y55YYYJJJJ??"
+    "7777!!!~~~"
+    "BBBB#BBBB##############GY5B####BGPPP5YJJ?7~^:::::.:::?#&G.."
+    "7GGPPPPPP5555YYYJJJJJ"
+    "B########################PYG####GPP5J?7!~^:.:::::.:~5#&&&7 "
+    ".~5BBBBGGGGGGGPPPP555"
+    "B#########################B5555Y?!!~^^^::::::::.:~JG##&&G. "
+    "...!P####BBBBBBBGGGGG"
+    "## TOO YOUNG TOO SIMPLE ###&PJ?7!^:::::::^::::~?5GB####G.  "
+    ".....~?YPGB###BBBBBBB"
+    "#### SOMETIMES NAIVE ##BP5J#@BPY?7~^^^^^^:.^?5GB##BB#&#:    "
+    "........:^!J5PBBBBBB";
+
+void print_toad() {
+    set_cursor(0, 0);
+    set_term_color(FGND_WHITE | BGND_BLACK);
+    putbytes(toad, sizeof(toad) - 1);
+}
-- 
cgit