diff options
Diffstat (limited to 'gdb/ser-unix.c')
| -rw-r--r-- | gdb/ser-unix.c | 49 |
1 files changed, 41 insertions, 8 deletions
diff --git a/gdb/ser-unix.c b/gdb/ser-unix.c index 4daf11f..ee17c12 100644 --- a/gdb/ser-unix.c +++ b/gdb/ser-unix.c @@ -741,9 +741,33 @@ rate_to_code (int rate) int i; for (i = 0; baudtab[i].rate != -1; i++) - if (rate == baudtab[i].rate) - return baudtab[i].code; - + { + /* test for perfect macth. */ + if (rate == baudtab[i].rate) + return baudtab[i].code; + else + { + /* check if it is in between valid values. */ + if (rate < baudtab[i].rate) + { + if (i) + { + warning ("Invalid baud rate %d. Closest values are %d and %d.", + rate, baudtab[i - 1].rate, baudtab[i].rate); + } + else + { + warning ("Invalid baud rate %d. Minimum value is %d.", + rate, baudtab[0].rate); + } + return -1; + } + } + } + + /* The requested speed was too large. */ + warning ("Invalid baud rate %d. Maximum value is %d.", + rate, baudtab[i - 1].rate); return -1; } @@ -751,13 +775,22 @@ static int hardwire_setbaudrate (serial_t scb, int rate) { struct hardwire_ttystate state; + int baud_code = rate_to_code (rate); + + if (baud_code < 0) + { + /* The baud rate was not valid. + A warning has already been issued. */ + errno = EINVAL; + return -1; + } if (get_tty_state (scb, &state)) return -1; #ifdef HAVE_TERMIOS - cfsetospeed (&state.termios, rate_to_code (rate)); - cfsetispeed (&state.termios, rate_to_code (rate)); + cfsetospeed (&state.termios, baud_code); + cfsetispeed (&state.termios, baud_code); #endif #ifdef HAVE_TERMIO @@ -766,12 +799,12 @@ hardwire_setbaudrate (serial_t scb, int rate) #endif state.termio.c_cflag &= ~(CBAUD | CIBAUD); - state.termio.c_cflag |= rate_to_code (rate); + state.termio.c_cflag |= baud_code; #endif #ifdef HAVE_SGTTY - state.sgttyb.sg_ispeed = rate_to_code (rate); - state.sgttyb.sg_ospeed = rate_to_code (rate); + state.sgttyb.sg_ispeed = baud_code; + state.sgttyb.sg_ospeed = baud_code; #endif return set_tty_state (scb, &state); |