#include "serial.h"
#include <sys/dos.h>
-#define SIGNATURE 0x4154
-#define VERSION 1
-#define OFFSET 0x104
-
-#define peek(a,b) (*(unsigned short *)(0xe0000000 + (a)*16 + (b)))
+/* This is unused for now. We just return a placeholder. */
+struct go32_ttystate
+{
+ int bogus;
+};
typedef struct {
short jmp_op;
short iov;
} ASYNC_STRUCT;
+static int go32_open PARAMS ((serial_t scb, const char *name));
+static void go32_raw PARAMS ((serial_t scb));
+static int wait_for PARAMS ((serial_t scb, int timeout));
+static int go32_readchar PARAMS ((serial_t scb, int timeout));
+static int rate_to_code PARAMS ((int rate));
+static int go32_setbaudrate PARAMS ((serial_t scb, int rate));
+static int go32_write PARAMS ((serial_t scb, const char *str, int len));
+static void go32_restore PARAMS ((serial_t scb));
+static void go32_close PARAMS ((serial_t scb));
+static serial_ttystate go32_get_tty_state PARAMS ((serial_t scb));
+static int go32_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
+static int strncasecmp PARAMS ((const char *str1, const char *str2, int len));
+static char *aptr PARAMS ((short p));
+static ASYNC_STRUCT *getivec PARAMS ((int which));
+static int dos_async_init PARAMS ((int port));
+static void dos_async_tx PARAMS ((const char c));
+static int dos_async_ready PARAMS (());
+static int dos_async_rx PARAMS (());
+static int dosasync_read PARAMS ((int fd, char *buf, int len, int timeout));
+static int dosasync_write PARAMS ((int fd, const char *buf, int len));
+
+#define SIGNATURE 0x4154
+#define VERSION 1
+#define OFFSET 0x104
+
+#define peek(a,b) (*(unsigned short *)(0xe0000000 + (a)*16 + (b)))
+
static ASYNC_STRUCT *async;
static int iov;
#define com_rb iov
#define com_lsr iov+5
#define com_msr iov+6
-static int fd;
+static int
+strncasecmp(str1, str2, len)
+ const char *str1, *str2;
+ register int len;
+{
+ unsigned char c1, c2;
+
+ for (; len != 0; --len)
+ {
+ c1 = *str1++;
+ c2 = *str2++;
+
+ if (toupper(c1) != toupper(c2))
+ return toupper(c1) - toupper(c2);
+
+ if (c1 == '\0')
+ return 0;
+ }
+ return 0;
+}
static char *
aptr(p)
if (peek(0, which*4) != OFFSET)
return 0;
+
a = (ASYNC_STRUCT *)(0xe0000000 + peek(0, which*4+2)*16 + peek(0, which*4));
if (a->signature != SIGNATURE)
return 0;
+
if (a->version != VERSION)
return 0;
+
return a;
}
static int
-dos_async_init()
+dos_async_init(port)
+ int port;
{
int i;
- ASYNC_STRUCT *a1;
- ASYNC_STRUCT *a2;
-
- a1 = getivec(12);
- a2 = getivec(11);
- async = 0;
- if (a1)
- async = a1;
- if (a2)
- async = a2;
-
- if (a1 && a2)
+
+ switch (port)
{
- if (a1 < a2)
- async = a1;
- else
- async = a2;
+ case 1:
+ async = getivec (12);
+ break;
+ case 2:
+ async = getivec (11);
+ break;
+ default:
+ return 0;
}
- if (async == 0)
+ if (!async)
{
- error("GDB can not connect to asynctsr program, check that it is installed\n\
+ error("GDB cannot connect to asynctsr program, check that it is installed\n\
and that serial I/O is not being redirected (perhaps by NFS)\n\n\
example configuration:\n\
-C> mode com2:9600,n,8,1,p\n\
-C> asynctsr 2\n\
-C> gdb \n");
-
+C> mode com%d:9600,n,8,1,p\n\
+C> asynctsr %d\n\
+C> gdb \n", port, port);
}
iov = async->iov;
outportb(com_mcr, 0x0b);
async->getp = async->putp = async->buffer_start;
- if (iov > 0x300)
- return 1;
- else
- return 2;
+ return 1;
}
static void
serial_t scb;
const char *name;
{
- scb->fd = dos_async_init();
+ int port;
+
+ if (strncasecmp (name, "com", 3) != 0)
+ {
+ errno = ENOENT;
+ return -1;
+ }
+
+ port = name[3] - '0';
+
+ if ((port != 1) && (port != 2))
+ {
+ errno = ENOENT;
+ return -11;
+ }
+
+ scb->fd = dos_async_init(port);
if (!scb->fd)
- return 1;
+ return -1;
return 0;
}
+static int
+go32_flush_output (scb)
+ serial_t scb;
+{
+ /* No need to flush, because there is no buffering. */
+ return 0;
+}
+
static void
go32_raw (scb)
serial_t scb;
if (dosasync_read(scb->fd, &buf, 1, timeout))
return buf;
else
- return -2; /* Timeout, I guess */
+ return SERIAL_TIMEOUT;
+}
+
+/* go32_{get set}_tty_state() are both dummys to fill out the function
+ vector. Someday, they may do something real... */
+
+static serial_ttystate
+go32_get_tty_state(scb)
+ serial_t scb;
+{
+ struct go32_ttystate *state;
+
+ state = (struct go32_ttystate *)xmalloc(sizeof *state);
+
+ return (serial_ttystate)state;
+}
+
+static int
+go32_set_tty_state(scb, ttystate)
+ serial_t scb;
+ serial_ttystate ttystate;
+{
+ struct go32_ttystate *state;
+
+ return 0;
+}
+
+static int
+go32_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
+ serial_t scb;
+ serial_ttystate new_ttystate;
+ serial_ttystate old_ttystate;
+{
+ return 0;
+}
+
+static void
+go32_print_tty_state (scb, ttystate)
+ serial_t scb;
+ serial_ttystate ttystate;
+{
+ /* Nothing to print. */
+ return;
}
static int
return 0;
}
+static int
+go32_set_process_group (scb, ttystate, group)
+ serial_t scb;
+ serial_ttystate ttystate;
+ int group;
+{
+ return 0;
+}
+
static int
go32_write (scb, str, len)
serial_t scb;
int len;
{
dosasync_write(scb->fd, str, len);
-}
-static void
-go32_close ()
-{
+ return 0;
}
static void
-go32_restore (scb)
+go32_close (scb)
serial_t scb;
{
}
go32_close,
go32_readchar,
go32_write,
+ go32_flush_output,
go32_raw,
- go32_restore,
- go32_setbaudrate
+ go32_get_tty_state,
+ go32_set_tty_state,
+ go32_print_tty_state,
+ go32_noflush_set_tty_state,
+ go32_setbaudrate,
+ go32_set_process_group
};
+/* There is never job control on go32. */
+int
+gdb_setpgid ()
+{
+ return 0;
+}
+
_initialize_ser_go32 ()
{
+ job_control = 0;
serial_add_interface (&go32_ops);
}
projects / deliverable / binutils-gdb.git / blobdiff