diff options
Diffstat (limited to 'gdb/ser-go32.c')
| -rw-r--r-- | gdb/ser-go32.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/gdb/ser-go32.c b/gdb/ser-go32.c index a1c0b6e..b4a7591 100644 --- a/gdb/ser-go32.c +++ b/gdb/ser-go32.c @@ -196,6 +196,7 @@ static struct dos_ttystate { int base; int irq; + int refcnt; struct intrupt *intrupt; int fifo; int baudrate; @@ -311,7 +312,7 @@ dos_comisr (irq) port->oflo++; } - if (dos_putc (c & 0x7f, port) < 0) + if (dos_putc (c, port) < 0) { COUNT (CNT_ORUN); } @@ -474,11 +475,11 @@ dos_open (scb, name) fd = name[3] - '1'; port = &ports[fd]; - if (port->intrupt) + if (port->refcnt++ > 0) { - /* already open (EBUSY not defined!) */ - errno = EACCES; - return -1; + /* Device already opened another user. Just point at it. */ + scb->fd = fd; + return 0; } /* force access to ID reg */ @@ -559,6 +560,10 @@ dos_close (scb) return; port = &ports[scb->fd]; + + if (port->refcnt-- > 1) + return; + if (!(intrupt = port->intrupt)) return; |