mirror of
https://github.com/holub/mame
synced 2025-06-14 08:26:57 +03:00
40a30af10f
Changed the default mapping for UI select to not trigger on Alt+Enter fullscreen toggle. (Fullscreen toggle still doesn't work in menus - actually fixing that is complicated.) frontend: Made the about box wrap text properly, made the title and backtrack menu item always visible, and added a footer with the VCS revision. frontend: Don't highlight the favourites and info toolbar buttons if there's no selection (can happen if filters produce no results). Also made the info viewer appear even if no info is available - it's less confusing to see an empty menu than wonder why clicking the button does nothing. debugger: Added a register points view to the GUI debuggers, to go with the breakpoints and watchpoints views. debugger: Extended [brw]p(clear|(en|dis)able) commands to accept multiple arguments to perform the same action on multiple (break|watch|register)points at once. Also made rplist accept a CPU for showing a single CPU's register points ([bw]plist already support this). docs: Updated registerpoints debugger commands page, and updated other pages for latest extensions to syntax.
166 lines
4.9 KiB
ReStructuredText
166 lines
4.9 KiB
ReStructuredText
.. _debugger-breakpoint-list:
|
|
|
|
Breakpoint Debugger Commands
|
|
============================
|
|
|
|
:ref:`debugger-command-bpset`
|
|
sets a breakpoint at <address>
|
|
:ref:`debugger-command-bpclear`
|
|
clears a specific breakpoint or all breakpoints
|
|
:ref:`debugger-command-bpdisable`
|
|
disables a specific breakpoint or all breakpoints
|
|
:ref:`debugger-command-bpenable`
|
|
enables a specific breakpoint or all breakpoints
|
|
:ref:`debugger-command-bplist`
|
|
lists breakpoints
|
|
|
|
|
|
.. _debugger-command-bpset:
|
|
|
|
bpset
|
|
-----
|
|
|
|
**bp[set] <address>[:<CPU>][,<condition>[,<action>]]**
|
|
|
|
Sets a new execution breakpoint at the specified **<address>**. The
|
|
**<address>** may optionally be followed by a colon and a tag or
|
|
debugger CPU number to set a breakpoint for a specific CPU. If no CPU
|
|
is specified, the breakpoint will be set for the CPU currently visible
|
|
in the debugger.
|
|
|
|
The optional **<condition>** parameter lets you specify an expression
|
|
that will be evaluated each time the breakpoint address is hit. If the
|
|
result of the expression is true (non-zero), the breakpoint will halt
|
|
execution; otherwise, execution will continue with no notification. The
|
|
optional **<action>** parameter provides a command to be executed
|
|
whenever the breakpoint is hit and the **<condition>** is true. Note
|
|
that you may need to surround the action with braces ``{ }`` to ensure
|
|
commas and semicolons within the command are not interpreted in the
|
|
context of the ``bpset`` command itself.
|
|
|
|
Each breakpoint that is set is assigned a numeric index which can be
|
|
used to refer to it in other breakpoint commands. Breakpoint indices
|
|
are unique throughout a session.
|
|
|
|
Examples:
|
|
|
|
``bp 1234``
|
|
Set a breakpoint for the visible CPU that will halt execution
|
|
whenever the PC is equal to 1234.
|
|
``bp 23456,a0 == 0 && a1 == 0``
|
|
Set a breakpoint for the visible CPU that will halt execution
|
|
whenever the PC is equal to 23456 *and* the expression
|
|
``a0 == 0 && a1 == 0`` is true.
|
|
``bp 3456:audiocpu,1,{ printf "A0=%08X\n",a0 ; g }``
|
|
Set a breakpoint for the CPU with the absolute tag path
|
|
``:audiocpu`` that will halt execution whenever the PC is equal to
|
|
3456. When this happens, print **A0=<a0val>** to the debugger
|
|
console and resume execution.
|
|
``bp 45678:2,a0==100,{ a0 = ff ; g }``
|
|
Set a breakpoint on the third CPU in the system (zero-based index)
|
|
that will halt execution whenever the PC is equal to 45678 and the
|
|
expression ``a0 == 100`` is true. When that happens, set **a0** to
|
|
ff and resume execution.
|
|
``temp0 = 0 ; bp 567890,++temp0 >= 10``
|
|
Set a breakpoint for the visible CPU that will halt execution
|
|
whenever the PC is equal to 567890 and the expression
|
|
``++temp0 >= 10`` is true. This effectively breaks only after the
|
|
breakpoint has been hit sixteen times.
|
|
|
|
Back to :ref:`debugger-breakpoint-list`
|
|
|
|
|
|
.. _debugger-command-bpclear:
|
|
|
|
bpclear
|
|
-------
|
|
|
|
**bpclear [<bpnum>[,…]]**
|
|
|
|
Clear breakpoints. If **<bpnum>** is specified, the breakpoints
|
|
referred to will be cleared. If **<bpnum>** is not specified, all
|
|
breakpoints will be cleared.
|
|
|
|
Examples:
|
|
|
|
``bpclear 3``
|
|
Clear the breakpoint with index 3.
|
|
``bpclear``
|
|
Clear all breakpoints.
|
|
|
|
Back to :ref:`debugger-breakpoint-list`
|
|
|
|
|
|
.. _debugger-command-bpdisable:
|
|
|
|
bpdisable
|
|
---------
|
|
|
|
**bpdisable [<bpnum>[,…]]**
|
|
|
|
Disable breakpoints. If **<bpnum>** is specified, the breakpoints
|
|
referred to will be disabled. If **<bpnum>** is not specified, all
|
|
breakpoints will be disabled.
|
|
|
|
Note that disabling a breakpoint does not delete it, it just temporarily
|
|
marks the breakpoint as inactive. Disabled breakpoints will not cause
|
|
execution to halt, their associated condition expressions will not be
|
|
evaluated, and their associated commands will not be executed.
|
|
|
|
Examples:
|
|
|
|
``bpdisable 3``
|
|
Disable the breakpoint with index 3.
|
|
``bpdisable``
|
|
Disable all breakpoints.
|
|
|
|
Back to :ref:`debugger-breakpoint-list`
|
|
|
|
|
|
.. _debugger-command-bpenable:
|
|
|
|
bpenable
|
|
--------
|
|
|
|
**bpenable [<bpnum>[,…]]**
|
|
|
|
Enable breakpoints. If **<bpnum>** is specified, the breakpoint
|
|
referred to will be enabled. If **<bpnum>** is not specified, all
|
|
breakpoints will be enabled.
|
|
|
|
Examples:
|
|
|
|
``bpenable 3``
|
|
Enable the breakpoint with index 3.
|
|
``bpenable``
|
|
Enable all breakpoints.
|
|
|
|
Back to :ref:`debugger-breakpoint-list`
|
|
|
|
|
|
.. _debugger-command-bplist:
|
|
|
|
bplist
|
|
------
|
|
|
|
**bplist [<CPU>]**
|
|
|
|
List current breakpoints, along with their indices and any associated
|
|
conditions or actions. If no **<CPU>** is specified, breakpoints for
|
|
all CPUs in the system will be listed; if a **<CPU>** is specified, only
|
|
breakpoints for that CPU will be listed. The **<CPU>** can be specified
|
|
by tag or by debugger CPU number (see :ref:`debugger-devicespec` for
|
|
details).
|
|
|
|
Examples:
|
|
|
|
``bplist``
|
|
List all breakpoints.
|
|
``bplist .``
|
|
List all breakpoints for the visible CPU.
|
|
``bplist maincpu``
|
|
List all breakpoints for the CPU with the absolute tag path
|
|
``:maincpu``.
|
|
|
|
Back to :ref:`debugger-breakpoint-list`
|