Rewrite means for scripts to register help text for commands. These
cause the new commands to be stored in the command heirarchy, with
built-in commands; however, they will never be invoked there because
they do not receive a command handler. The same trick is used for
the Jim commands.
Remove the old helpers that were used to register commands.
For the startup.tcl code to use built-in commands, the context must be
associated with the interpreter temporarily. This will be required to
add help text.
Rewrites 'help' command in C, using new 'cmd_help' for display. Adds the
built-in 'help' COMMAND_HANDLER to provide better output than the
TCL-based script command (e.g. heirarchical listing of commands).
The help string is stored in the command structure, though it conitnues
to be pushed into the Jim environment. The current idiomatic usage
suggests the addition of a usage field as well, to provide two levels
of detail for users to consume (i.e. terse usage list, or verbose help).
Creates a helper function, cmd_help, which displays the help string
for a single command. Presently, it is called from the loop in help.
The routine has been extended to allow indentation of command groups,
so an improved help command can improve the display of information.
Refactors the command registration to use helpers to simplify the code.
The unregistration routines were made more flexible by allowing them
to operate on a single command, such that one can remove all of a
commands children in one step (perhaps before adding back a 'config'
subcommand that allows getting the others back). Eliminates a bit
of duplicated code and adds full API documentation for these routines.
The previous version never wrote dirty registers
for non-current CPU modes ... fix that.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
We *should* be able to read and write registers in any core mode,
instead of being stuck with whatever mode the core was when we
entered debug state. This patch makes them work.
Note that the current restore_context() only handles the current
mode; writing to other-mode registers is a NOP without a followup
patch fixing that. Also, that SPSR access needed some bugfixes;
it was confused with CPSR.
Secure monitor mode also seems dubious; there's probably more to
be done before that's sufficiently understood by the debugger.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Create a generic register_cache_invalidate(), and use it to
replace three all-but-identical core-specific routines:
- armv4_5_invalidate_core_regs()
- armv7m_invalidate_core_regs
- mips32_invalidate_core_regs() too.
Make cache->num_regs be unsigned, avoiding various errors.
Net code shrink and simplification.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Move bulk of for-loop to a new static command helper function.
Adds handle_nand_list_drivers command handler, registered as
'nand drivers'.
Improves command help text and error reporting.
Move variables to point of first use, reducing their scope.
Add driver_name temporary to help arguments be changed later.
Eliminates the useless 'found' variable, changing the code to terminate
the loop immediate and return its success.
After adding support for referencing banks by name, renames
the COMMAND_HELPERs appropriately:
flash_command_get_bank_by_num -> flash_command_get_bank
nand_command_get_device_by_num -> flash_command_get_device
Add get_flash_bank_by_name (and get_nand_device_by_name) helpers
to retrieves struct flash_bank * (struct nand_device *) given a
driver name and an (optional) driver-specific bank index.
These are used to extend flash_command_get_bank_by_num (and
nand_command_get_device_by_num) to allow all flash (nand) commands to
reference defined banks by name, not just by number.
To avoid some code duplication, add the flash/common.[ch] files to hold
functionality common to both types driver. The first two methods are
helpers for the above routines to find a bank specified by a "name" or
"name.index" string. get_flash_name_index() finds the '.index' portion,
while flash_driver_name_matches() performs the string portion matching.
Just pre-allocate memory for the cached register value.
Shrinks heap overhead; increases locality-of-reference.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Combine register names with other per-register data into a
single template structure. This saves space, and makes it
easier to change how registers get handled (by shrinking
the number of places that care about cache indices).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
