int
generic_readchar (struct serial *scb, int timeout,
int (do_readchar) (struct serial *scb, int timeout))
{
int ch;
if (scb->bufcnt > 0)
{
ch = *scb->bufp;
scb->bufcnt--;
scb->bufp++;
}
else if (scb->bufcnt < 0)
{
/* Some errors/eof are are sticky. */
ch = scb->bufcnt;
}
else
{
ch = do_readchar (scb, timeout);
if (ch < 0)
{
switch ((enum serial_rc) ch)
{
case SERIAL_EOF:
case SERIAL_ERROR:
/* Make the error/eof stick. */
scb->bufcnt = ch;
break;
case SERIAL_TIMEOUT:
scb->bufcnt = 0;
break;
}
}
}
/* Read any error output we might have. */
ser_base_read_error_fd (scb, 1);
reschedule (scb);
return ch;
}
int
generic_readchar (struct serial *scb, int timeout,
int (do_readchar) (struct serial *scb, int timeout))
{
int ch;
if (scb->bufcnt > 0)
{
ch = *scb->bufp;
scb->bufcnt--;
scb->bufp++;
}
else if (scb->bufcnt < 0)
{
/* Some errors/eof are are sticky. */
ch = scb->bufcnt;
}
else
{
ch = do_readchar (scb, timeout);
if (ch < 0)
{
switch ((enum serial_rc) ch)
{
case SERIAL_EOF:
case SERIAL_ERROR:
/* Make the error/eof stick. */
scb->bufcnt = ch;
break;
case SERIAL_TIMEOUT:
scb->bufcnt = 0;
break;
}
}
}
/* Read any error output we might have. */
if (scb->error_fd != -1)
{
ssize_t s;
char buf[81];
for (;;)
{
char *current;
char *newline;
int to_read = 80;
int num_bytes = -1;
if (scb->ops->avail)
num_bytes = (scb->ops->avail)(scb, scb->error_fd);
if (num_bytes != -1)
to_read = (num_bytes < to_read) ? num_bytes : to_read;
if (to_read == 0)
break;
s = read (scb->error_fd, &buf, to_read);
if (s == -1)
break;
/* In theory, embedded newlines are not a problem.
But for MI, we want each output line to have just
one newline for legibility. So output things
in newline chunks. */
buf[s] = '\0';
current = buf;
while ((newline = strstr (current, "\n")) != NULL)
{
*newline = '\0';
fputs_unfiltered (current, gdb_stderr);
fputs_unfiltered ("\n", gdb_stderr);
current = newline + 1;
}
fputs_unfiltered (current, gdb_stderr);
}
}
reschedule (scb);
return ch;
}
