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kdb: support new lines without carriage returns

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kdb expects carriage returns through the serial port to terminate
commands.  Modify it to accept the first seen carriage return or
new line as a terminator, but not treat \r\n as two terminators.

Change-Id: I06166017e7703d24310eefcb71c3a7d427088db7
Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Colin Cross 2012-03-14 19:26:53 -07:00
parent 688a90183a
commit e657952e41
1 changed files with 10 additions and 2 deletions
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12
kernel/debug/kdb/kdb_io.c
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@ -216,7 +216,7 @@ static char *kdb_read(char *buffer, size_t bufsize)
int i;
int diag, dtab_count;
int key;
static int last_crlf;
diag = kdbgetintenv("DTABCOUNT", &dtab_count);
if (diag)
@ -237,6 +237,9 @@ poll_again:
return buffer;
if (key != 9)
tab = 0;
if (key != 10 && key != 13)
last_crlf = 0;
switch (key) {
case 8: /* backspace */
if (cp > buffer) {
@ -254,7 +257,12 @@ poll_again:
*cp = tmp;
}
break;
case 13: /* enter */
case 10: /* new line */
case 13: /* carriage return */
/* handle \n after \r */
if (last_crlf && last_crlf != key)
break;
last_crlf = key;
*lastchar++ = '\n';
*lastchar++ = '\0';
if (!KDB_STATE(KGDB_TRANS)) {