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binutils-gdb
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2011-07-26 Philippe Waroquiers <philippe.waroquiers@skynet.be> 

* remote.c (remote_region_ok_for_hw_watchpoint): New function.
	(remote_hw_watchpoint_length_limit): New variable.
	(_initialize_remote) add set,show cmds for this new variable.
	* gdb.texinfo: document these new commands.
	* NEWS: Mention these new commands.
This commit is contained in:
Philippe Waroquiers 2011-07-26 20:57:54 +00:00
parent efa80663c6
commit 480a3f21c0
4 changed files with 55 additions and 0 deletions
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8
gdb/ChangeLog
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@ -1,3 +1,11 @@
2011-07-26 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* remote.c (remote_region_ok_for_hw_watchpoint): New function.
(remote_hw_watchpoint_length_limit): New variable.
(_initialize_remote) add set,show cmds for this new variable.
* gdb.texinfo: document these new commands.
* NEWS: Mention these new commands.
2011-07-26 Pedro Alves <pedro@codesourcery.com>
* breakpoint.c (works_in_software_mode_watchpoint): Also return

10
gdb/NEWS
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@ -3,6 +3,16 @@
*** Changes since GDB 7.3
* GDB has two new commands: "set remote hardware-watchpoint-length-limit"
and "show remote hardware-watchpoint-length-limit". These allows to
set or show the maximum length limit (in bytes) of a remote
target hardware watchpoint.
This allows e.g. to use "unlimited" hardware watchpoints with the
gdbserver integrated in Valgrind version >= 3.7.0. Such Valgrind
watchpoints are slower than real hardware watchpoints but are
significantly faster than gdb software watchpoints.
* Python scripting
** The "maint set python print-stack on|off" command has been

12
gdb/doc/gdb.texinfo
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@ -16655,6 +16655,18 @@ responses.
Restrict @value{GDBN} to using @var{limit} remote hardware breakpoint or
watchpoints. A limit of -1, the default, is treated as unlimited.
@cindex limit hardware watchpoints length
@cindex remote target, limit watchpoints length
@anchor{set remote hardware-watchpoint-length-limit}
@item set remote hardware-watchpoint-length-limit @var{limit}
Restrict @value{GDBN} to using @var{limit} bytes for the maximum length of
a remote hardware watchpoint. A limit of -1, the default, is treated
as unlimited.
@item show remote hardware-watchpoint-length-limit
Show the current limit (in bytes) of the maximum length of
a remote hardware watchpoint.
@item set remote exec-file @var{filename}
@itemx show remote exec-file
@anchor{set remote exec-file}

25
gdb/remote.c
View File

@ -7763,8 +7763,22 @@ remote_remove_watchpoint (CORE_ADDR addr, int len, int type,
int remote_hw_watchpoint_limit = -1;
int remote_hw_watchpoint_length_limit = -1;
int remote_hw_breakpoint_limit = -1;
static int
remote_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
{
if (remote_hw_watchpoint_length_limit == 0)
return 0;
else if (remote_hw_watchpoint_length_limit < 0)
return 1;
else if (len <= remote_hw_watchpoint_length_limit)
return 1;
else
return 0;
}
static int
remote_check_watch_resources (int type, int cnt, int ot)
{
@ -10356,6 +10370,8 @@ Specify the serial device it is connected to\n\
remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources;
remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint;
remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint;
remote_ops.to_region_ok_for_hw_watchpoint
= remote_region_ok_for_hw_watchpoint;
remote_ops.to_insert_watchpoint = remote_insert_watchpoint;
remote_ops.to_remove_watchpoint = remote_remove_watchpoint;
remote_ops.to_kill = remote_kill;
@ -10751,6 +10767,15 @@ Specify a negative limit for unlimited."),
number of target hardware
watchpoints is %s. */
&remote_set_cmdlist, &remote_show_cmdlist);
add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class,
&remote_hw_watchpoint_length_limit, _("\
Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
Specify a negative limit for unlimited."),
NULL, NULL, /* FIXME: i18n: The maximum
length (in bytes) of a target
hardware watchpoint is %s. */
&remote_set_cmdlist, &remote_show_cmdlist);
add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class,
&remote_hw_breakpoint_limit, _("\
Set the maximum number of target hardware breakpoints."), _("\