sim: dv-sockser: add a write buffer variant

Rather than having to bang out chunks of data one byte at a time over
the socket interface, add a write variant that accepts an arbitrarily
long buffer.  This speeds things up considerably when we have many
chars to send out at once.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index 6cb313b74528de48ae3cac8e2fb6a45d957c6c84..d6dc0224d1d66e18eef4b3e041289fdc53c8a538 100644 (file)
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,3 +1,9 @@
+2010-11-16  Mike Frysinger  <vapier@gentoo.org>
+
+       * dv-sockser.c (dv_sockser_write_buffer): New function.
+       (dv_sockser_write): Rewrite to use dv_sockser_write_buffer.
+       * dv-sockser.h (dv_sockser_write_buffer): New prototype.
+
 2010-10-07  Hans-Peter Nilsson  <hp@axis.com>
 
        * callback.c (os_lseek): Call wrap on lseek result.

diff --git a/sim/common/dv-sockser.c b/sim/common/dv-sockser.c
index b09d9c94d261fe6feb5456b44c8e61f943aededb..f6fd3898ab6b5de1ea63892c7e15f22e669b45bb 100644 (file)
--- a/sim/common/dv-sockser.c
+++ b/sim/common/dv-sockser.c
@@ -346,13 +346,14 @@ dv_sockser_status (SIM_DESC sd)
 }
 
 int
-dv_sockser_write (SIM_DESC sd, unsigned char c)
+dv_sockser_write_buffer (SIM_DESC sd, const unsigned char *buffer,
+                        unsigned nr_bytes)
 {
   int n;
 
   if (! connected_p (sd))
     return -1;
-  n = write (sockser_fd, &c, 1);
+  n = write (sockser_fd, buffer, nr_bytes);
   if (n == -1)
     {
       if (errno == EPIPE)
@@ -362,9 +363,15 @@ dv_sockser_write (SIM_DESC sd, unsigned char c)
        }
       return -1;
     }
-  if (n != 1)
+  if (n != nr_bytes)
     return -1;
-  return 1;
+  return nr_bytes;
+}
+
+int
+dv_sockser_write (SIM_DESC sd, unsigned char c)
+{
+  return dv_sockser_write_buffer (sd, &c, 1);
 }
 
 int

diff --git a/sim/common/dv-sockser.h b/sim/common/dv-sockser.h
index 209cf4631460ec701ca74c18072b50304508ec4c..0ad071a7b4c1b8d4b00ddb1941df0b430c5f0146 100644 (file)
--- a/sim/common/dv-sockser.h
+++ b/sim/common/dv-sockser.h
@@ -27,6 +27,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 /* FIXME: later add a device ptr arg */
 extern int dv_sockser_status (SIM_DESC);
 int dv_sockser_write (SIM_DESC, unsigned char);
+int dv_sockser_write_buffer (SIM_DESC, const unsigned char *, unsigned);
 int dv_sockser_read (SIM_DESC);
 
 #endif /* DV_SOCKSER_H */