Suggested by Shaun Jackman <sjackman@gmail.com>:

	* defs.h (print_transfer_performance): Update prototype.
	* m32r-rom.c (m32r_load, m32r_upload_command): Use gettimeofday
	for print_transfer_performance.
	* remote-m32r-sdi.c (m32r_load): Likewise.
	* symfile.c (generic_load): Likewise.
	(report_transfer_performance): Create a dummy struct timeval.
	(print_transfer_performance): Use a more accurate measure
	of performance.

5 files changed, 57 insertions, 27 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4e124de..084f01b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,15 @@
+2005-08-01  Daniel Jacobowitz  <dan@codesourcery.com>
+
+	Suggested by Shaun Jackman <sjackman@gmail.com>:
+	* defs.h (print_transfer_performance): Update prototype.
+	* m32r-rom.c (m32r_load, m32r_upload_command): Use gettimeofday
+	for print_transfer_performance.
+	* remote-m32r-sdi.c (m32r_load): Likewise.
+	* symfile.c (generic_load): Likewise.
+	(report_transfer_performance): Create a dummy struct timeval.
+	(print_transfer_performance): Use a more accurate measure
+	of performance.
+
 2005-08-01  Fred Fish  <fnf@specifix.com>
 
 	* stack.c (parse_frame_specification_1): Remove use of obsolete
diff --git a/gdb/defs.h b/gdb/defs.h
index 7548455..1880bc0 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -552,10 +552,12 @@ extern void symbol_file_command (char *, int);
 extern void generic_load (char *name, int from_tty);
 
 /* Summarise a download */
+struct timeval;
 extern void print_transfer_performance (struct ui_file *stream,
 					unsigned long data_count,
 					unsigned long write_count,
-					unsigned long time_count);
+					const struct timeval *start_time,
+					const struct timeval *end_time);
 
 /* From top.c */
 
diff --git a/gdb/m32r-rom.c b/gdb/m32r-rom.c
index f9cc5e0..a6c70e8 100644
--- a/gdb/m32r-rom.c
+++ b/gdb/m32r-rom.c
@@ -1,8 +1,8 @@
 /* Remote debugging interface to m32r and mon2000 ROM monitors for GDB, 
    the GNU debugger.
 
-   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2004 Free Software
-   Foundation, Inc.
+   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2004, 2005
+   Free Software Foundation, Inc.
 
    Adapted by Michael Snyder of Cygnus Support.
 
@@ -35,6 +35,7 @@
 #include "command.h"
 #include "gdbcmd.h"
 #include "symfile.h"		/* for generic load */
+#include <sys/time.h>
 #include <time.h>		/* for time_t */
 #include "gdb_string.h"
 #include "objfiles.h"		/* for ALL_OBJFILES etc. */
@@ -119,7 +120,7 @@ m32r_load (char *filename, int from_tty)
   bfd *abfd;
   asection *s;
   unsigned int i, data_count = 0;
-  time_t start_time, end_time;	/* for timing of download */
+  struct timeval start_time, end_time;
 
   if (filename == NULL || filename[0] == 0)
     filename = get_exec_file (1);
@@ -129,7 +130,7 @@ m32r_load (char *filename, int from_tty)
     error (_("Unable to open file %s."), filename);
   if (bfd_check_format (abfd, bfd_object) == 0)
     error (_("File is not an object file."));
-  start_time = time (NULL);
+  gettimeofday (&start_time, NULL);
 #if 0
   for (s = abfd->sections; s; s = s->next)
     if (s->flags & SEC_LOAD)
@@ -163,10 +164,10 @@ m32r_load (char *filename, int from_tty)
       return;
     }
 #endif
-  end_time = time (NULL);
+  gettimeofday (&end_time, NULL);
   printf_filtered ("Start address 0x%lx\n", bfd_get_start_address (abfd));
-  print_transfer_performance (gdb_stdout, data_count, 0,
-			      end_time - start_time);
+  print_transfer_performance (gdb_stdout, data_count, 0, &start_time,
+			      &end_time);
 
   /* Finally, make the PC point at the start address */
   if (exec_bfd)
@@ -405,7 +406,7 @@ m32r_upload_command (char *args, int from_tty)
 {
   bfd *abfd;
   asection *s;
-  time_t start_time, end_time;	/* for timing of download */
+  struct timeval start_time, end_time;
   int resp_len, data_count = 0;
   char buf[1024];
   struct hostent *hostent;
@@ -467,7 +468,7 @@ m32r_upload_command (char *args, int from_tty)
 	  ("Need to know default download path (use 'set download-path')");
     }
 
-  start_time = time (NULL);
+  gettimeofday (&start_time, NULL);
   monitor_printf ("uhip %s\r", server_addr);
   resp_len = monitor_expect_prompt (buf, sizeof (buf));	/* parse result? */
   monitor_printf ("ulip %s\r", board_addr);
@@ -491,7 +492,7 @@ m32r_upload_command (char *args, int from_tty)
   else
     printf_filtered (" -- Ethernet load complete.\n");
 
-  end_time = time (NULL);
+  gettimeofday (&end_time, NULL);
   abfd = bfd_openr (args, 0);
   if (abfd != NULL)
     {				/* Download is done -- print section statistics */
@@ -517,8 +518,8 @@ m32r_upload_command (char *args, int from_tty)
       /* Finally, make the PC point at the start address */
       write_pc (bfd_get_start_address (abfd));
       printf_filtered ("Start address 0x%lx\n", bfd_get_start_address (abfd));
-      print_transfer_performance (gdb_stdout, data_count, 0,
-				  end_time - start_time);
+      print_transfer_performance (gdb_stdout, data_count, 0, &start_time,
+				  &end_time);
     }
   inferior_ptid = null_ptid;	/* No process now */
 
diff --git a/gdb/remote-m32r-sdi.c b/gdb/remote-m32r-sdi.c
index 4fa797d..9471c11 100644
--- a/gdb/remote-m32r-sdi.c
+++ b/gdb/remote-m32r-sdi.c
@@ -1213,7 +1213,7 @@ m32r_load (char *args, int from_tty)
   char *filename;
   int quiet;
   int nostart;
-  time_t start_time, end_time;	/* Start and end times of download */
+  struct timeval start_time, end_time;
   unsigned long data_count;	/* Number of bytes transferred to memory */
   int ret;
   static RETSIGTYPE (*prev_sigint) ();
@@ -1263,7 +1263,7 @@ m32r_load (char *args, int from_tty)
     error (_("\"%s\" is not an object file: %s"), filename,
 	   bfd_errmsg (bfd_get_error ()));
 
-  start_time = time (NULL);
+  gettimeofday (&start_time, NULL);
   data_count = 0;
 
   interrupted = 0;
@@ -1349,7 +1349,7 @@ m32r_load (char *args, int from_tty)
   interrupted = 0;
   signal (SIGINT, prev_sigint);
 
-  end_time = time (NULL);
+  gettimeofday (&end_time, NULL);
 
   /* Make the PC point at the start address */
   if (exec_bfd)
@@ -1373,8 +1373,8 @@ m32r_load (char *args, int from_tty)
 	printf_unfiltered ("[Starting %s at 0x%lx]\n", filename, entry);
     }
 
-  print_transfer_performance (gdb_stdout, data_count, 0,
-			      end_time - start_time);
+  print_transfer_performance (gdb_stdout, data_count, 0, &start_time,
+			      &end_time);
 
   do_cleanups (old_chain);
 }
diff --git a/gdb/symfile.c b/gdb/symfile.c
index 43eb28f..971c530 100644
--- a/gdb/symfile.c
+++ b/gdb/symfile.c
@@ -1,7 +1,7 @@
 /* Generic symbol file reading for the GNU debugger, GDB.
 
    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
    Contributed by Cygnus Support, using pieces from other GDB modules.
 
@@ -57,6 +57,7 @@
 #include "gdb_stat.h"
 #include <ctype.h>
 #include <time.h>
+#include <sys/time.h>
 
 #ifndef O_BINARY
 #define O_BINARY 0
@@ -1600,7 +1601,7 @@ generic_load (char *args, int from_tty)
 {
   asection *s;
   bfd *loadfile_bfd;
-  time_t start_time, end_time;	/* Start and end times of download */
+  struct timeval start_time, end_time;
   char *filename;
   struct cleanup *old_cleanups;
   char *offptr;
@@ -1652,11 +1653,11 @@ generic_load (char *args, int from_tty)
   bfd_map_over_sections (loadfile_bfd, add_section_size_callback,
 			 (void *) &cbdata.total_size);
 
-  start_time = time (NULL);
+  gettimeofday (&start_time, NULL);
 
   bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata);
 
-  end_time = time (NULL);
+  gettimeofday (&end_time, NULL);
 
   entry = bfd_get_start_address (loadfile_bfd);
   ui_out_text (uiout, "Start address ");
@@ -1675,7 +1676,7 @@ generic_load (char *args, int from_tty)
      others don't (or didn't - perhaps they have all been deleted).  */
 
   print_transfer_performance (gdb_stdout, cbdata.data_count,
-			      cbdata.write_count, end_time - start_time);
+			      cbdata.write_count, &start_time, &end_time);
 
   do_cleanups (old_cleanups);
 }
@@ -1690,21 +1691,35 @@ void
 report_transfer_performance (unsigned long data_count, time_t start_time,
 			     time_t end_time)
 {
-  print_transfer_performance (gdb_stdout, data_count,
-			      end_time - start_time, 0);
+  struct timeval start, end;
+
+  start.tv_sec = start_time;
+  start.tv_usec = 0;
+  end.tv_sec = end_time;
+  end.tv_usec = 0;
+
+  print_transfer_performance (gdb_stdout, data_count, 0, &start, &end);
 }
 
 void
 print_transfer_performance (struct ui_file *stream,
 			    unsigned long data_count,
 			    unsigned long write_count,
-			    unsigned long time_count)
+			    const struct timeval *start_time,
+			    const struct timeval *end_time)
 {
+  unsigned long time_count;
+
+  /* Compute the elapsed time in milliseconds, as a tradeoff between
+     accuracy and overflow.  */
+  time_count = (end_time->tv_sec - start_time->tv_sec) * 1000;
+  time_count += (end_time->tv_usec - start_time->tv_usec) / 1000;
+
   ui_out_text (uiout, "Transfer rate: ");
   if (time_count > 0)
     {
       ui_out_field_fmt (uiout, "transfer-rate", "%lu",
-			(data_count * 8) / time_count);
+			1000 * (data_count * 8) / time_count);
       ui_out_text (uiout, " bits/sec");
     }
   else