Replace \b with \0177 as erase character

arch/amd64/hw/ps2.c

@@ -48,7 +48,7 @@ static const char ps2_key_table_0[128] = {
     [0x00] = 0,
 
     [0x01] = '\033',
-    [0x02] = '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', '\b',
+    [0x02] = '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 0x7F,
     [0x0F] = '\t',
     [0x10] = 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']',
     [0x1C] = '\n',
@@ -64,7 +64,7 @@ static const char ps2_key_table_1[128] = {
     [0x00] = 0,
 
     [0x01] = '\033',
-    [0x02] = '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', '\b',
+    [0x02] = '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', 0x7F,
     [0x0F] = '\t',
     [0x10] = 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}',
     [0x1C] = '\n',

sys/char/input.c

@@ -55,7 +55,7 @@ void input_key(uint8_t key, uint8_t mods, const char *map0, const char *map1) {
         const char *map = (mods & INPUT_MOD_SHIFT) ? map1 : map0;
         uint8_t c = map[key];
 
-        if (c && c < 0x7F) {
+        if (c && c <= 0x7F) {
             if (mods & INPUT_MOD_CAPS) {
                 if (islower(c)) {
                     c = toupper(c);

sys/char/line.c

@@ -46,18 +46,19 @@ ssize_t line_read(struct chrdev *chr, void *buf, size_t pos, size_t lim) {
             }
         }
 
-        if (c == '\b') {
-            if (rd) {
+        if (c == 0x7F) {
+            if (chr->tc.c_iflag & ICANON) {
                 if (chr->tc.c_lflag & ECHOE) {
                     tty_puts(chr, "\033[D \033[D");
                 }
 
-                if (chr->tc.c_iflag & ICANON) {
+                if (rd) {
                     --wr;
                     ++rem;
                     --rd;
-                    continue;
                 }
+
+                continue;
             }
         }
 

sys/char/tty.c

@@ -68,7 +68,7 @@ void tty_data_write(struct chrdev *tty, char c) {
             ring_signal(&tty->buffer, RING_SIGNAL_RET);
         }
         break;
-    case '\b':
+    case 0x7F:
         ring_signal(&tty->buffer, 0);
         break;
     case '\033':