Could you try the patch below on top of current mainline?
>So, I revert you three commit about serial.c, and now gdb cvs Head build and works OK.
>see:http://sourceware.org/bugzilla/show_bug.cgi?id=14227
Thanks.
2012-06-13 Pedro Alves<palves@redhat.com>
Partial revert of previous change.
* serial.c (scb_base): New global.
(serial_for_fd): New.
(serial_open, serial_fdopen_ops): Link new serial in open serials
chain.
(do_serial_close): Unlink serial from the open serials chain.
---
gdb/serial.c | 35 +++++++++++++++++++++++++++++++++++
gdb/serial.h | 1 +
2 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/gdb/serial.c b/gdb/serial.c
index 1140feb..df18b2f 100644
--- a/gdb/serial.c
+++ b/gdb/serial.c
@@ -33,6 +33,10 @@ static int global_serial_debug_p;
static struct serial_ops *serial_ops_list = NULL;
+/* Pointer to list of scb's. */
+
+static struct serial *scb_base;
+
/* Non-NULL gives filename which contains a recording of the remote session,
suitable for playback by gdbserver. */
@@ -157,6 +161,21 @@ serial_add_interface (struct serial_ops *optable)
serial_ops_list = optable;
}
+/* Return the open serial device for FD, if found, or NULL if FD is
+ not already opened. */
+
+struct serial *
+serial_for_fd (int fd)
+{
+ struct serial *scb;
+
+ for (scb = scb_base; scb; scb = scb->next)
+ if (scb->fd == fd)
+ return scb;
+
+ return NULL;
+}
+
/* Open up a device or a network socket, depending upon the syntax of NAME. */
struct serial *
@@ -206,10 +225,12 @@ serial_open (const char *name)
}
scb->name = xstrdup (name);
+ scb->next = scb_base;
scb->debug_p = 0;
scb->async_state = 0;
scb->async_handler = NULL;
scb->async_context = NULL;
+ scb_base = scb;
if (serial_logfile != NULL)
{
@@ -249,10 +270,12 @@ serial_fdopen_ops (const int fd, struct serial_ops *ops)
scb->refcnt = 1;
scb->name = NULL;
+ scb->next = scb_base;
scb->debug_p = 0;
scb->async_state = 0;
scb->async_handler = NULL;
scb->async_context = NULL;
+ scb_base = scb;
if ((ops->fdopen) != NULL)
(*ops->fdopen) (scb, fd);
@@ -296,6 +319,18 @@ do_serial_close (struct serial *scb, int really_close)
/* For serial_is_open. */
scb->bufp = NULL;
+ if (scb_base == scb)
+ scb_base = scb_base->next;
+ else
+ for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next)
+ {
+ if (tmp_scb->next != scb)
+ continue;
+
+ tmp_scb->next = tmp_scb->next->next;
+ break;
+ }
+
serial_unref (scb);
}
diff --git a/gdb/serial.h b/gdb/serial.h
index 187ed03..b164062 100644
--- a/gdb/serial.h
+++ b/gdb/serial.h
@@ -249,6 +249,7 @@ struct serial
still need to wait for this many
more seconds. */
char *name; /* The name of the device or host */
+ struct serial *next; /* Pointer to the next `struct serial *' */
int debug_p; /* Trace this serial devices operation. */
int async_state; /* Async internal state. */
void *async_context; /* Async event thread's context */