| Commit message (Collapse) | Author | Age | Files | Lines |
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Updates command registration to provide top-level handlers for all
commands, rather than falling back onto the 'unknown' command. Instead,
that same handler is registered for placeholders, providing the same
functionality under the root verb command name instead. This permits
users to implement their own 'unknown' function, and it resolves some
mind-bending breakage related to function object lookup while recursing.
Changes 'ocd_bounce' to call 'ocd_command' and 'ocd_help' from the
wrapper directly, rather than bouncing through their wrappers. This
prevents endless recursion caused by the above changes, whereby the
'command' wrapper's type check would blow the stack to hell and gone.
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Adds 'ocd_bouncer' in startup.tcl that is called as a helper for
all command handlers, shrinking the embedded C wrapper to a mere stub.
Jim handlers are called directly, simple handlers get called with the
wrapper to capture and discard their output on error, and placeholders
call help directly (though the unknown handler still does this too).
It attempts to improve the quality of the error messages as well.
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Adds the 'command' group handler, with the 'type' command producing
a string that tells whether the given command is 'native' (for Jim-based
command handlers), 'simple' (for simple built-in commands), 'group'
for command group placeholders, and 'unknown' if not found in the
command registration tables (e.g. core built-ins functions).
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The command refactoring caused subcommand handlers to produce duplicate
output when run. The problem was introduced by failing to ensure all
such invocations went through a top-level "catcher" script, prefixing
the command name with the 'ocd_' prefix and consuming its results.
The fix is to ensure such a top-level "catcher" script gets created
for each top-level command, regardless of whether it has a handler.
Indeed, this patch removes all command registrations for sub-commands,
which would not have worked in the new registration scheme anyway.
For now, dispatch of subcommands continues to be handled by the new
'unknown' command handler, which gets fixed here to strip the 'ocd_'
prefix if searching for the top-level command name fails initially.
Some Jim commands may be registered with this prefix, and that situation
seems to require the current fallback approach. Otherwise, that prefix
could be stripped unconditionally and the logic made a little simpler.
The same problem must be handled by the 'help' command handler too,
so its lookup process works as intended.
Overall, the command dispatching remains more complicated than desired,
but this patch fixes the immediate regressions.
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Detect the OPENOCD_DEBUG_LEVEL setting in log_init(), allowing the
very early startup phases to be debugged.
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Removes redundant assignment of start_ms from log_register_commands().
Eliminates command_context parameter and return value.
Adds Doxygen comment block for this API call.
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Eliminates duplicated code in script_command and handle_unknown_command.
Fixes bug with duplicated help output generated by placeholder commands.
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Factors log capture while running script commands, eliminating
duplicated code between script_command and jim_capture. Factors
setting a command's Jim "retval" into a new helper as well.
Using these new helpers in the new unknown command handler's
fixes possible regressions caused by these bits being missing.
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Remove duplicated handler code by checking the running command name.
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Rewrite formatting code in C, removing last remenants of TCL help code.
Sinificantly improves the readability by using smarter indent and wrap.
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The add_usage_text command uses the same C handler, which was updated
to support its new polymorphic role. This patch updates the two script
commands that needed this support: 'find' and 'script'.
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Adding jim_handler field to command_registration allows removing the
register_jim helper. All command registrations now go through the
register_command{,s}() functions.
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Save stack space: use a struct. Makes it easier to add new parameters.
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Use register_commands() for logging callbacks. Improve help and add
proper usage.
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Use table instead of individual calls. Add proper usage information.
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Rewrite the magical 'unknown' command in C as a Jim handler, allowing
it to dispatch commands to any level in the tree.
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Allow other modules to find a command, primarily for the purpose of
registering and unregistering subcommands.
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Move command context acquisition to current_command_context() for re-use.
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Adds the ability to chain registration structures. Modules can define a
command with the 'chain' and 'num_chain' fields defined in their
registration table, and the register_commands() function will initialize
these commands. If the registration record creates a new command, then
the chained commands are created under it; otherwise, they are created
in the same context as the other commands (i.e. the parent argument).
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Split out the handler registration into its own function, and add a
few obviously missing NULL pointer error checking.
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Use register_commands() to register low-level command handlers,
adding a builtin_command_handlers declaration that is easy to understand.
Splits help and usage information into their appropriate fields.
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Adds the usage command, to display usage information for commands.
The output for this command will remain erronenously empty until
commands are updated to use these new coventions.
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The register_commands API takes multiple commands in one call, allowing
modules to declare and pass a much simpler (and more explicit) array of
command_registration records.
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Add a structure to encapsulate command registration information, rather
than passing them all as parameters. Enables further API changes that
require additional required or optional parameters.
Updates the register_command API and COMMAND_REGISTER macro to use it,
along with their documentation.
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Replaces direct calls to register_command() with a macro, to allow
its parameters to be changed and callers updated in phases.
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Provides a migration path for the widely used register_command API,
which needs to be updated to provide new functionality.
This macro allows the API to change without having to update all of its
callers at the same time.
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Fix a couple of layering violations missed in the last round.
Add missing comment headers.
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The previous implementation was unnecessarily complex. Get rid of the loops,
let vsnprintf() tell us directly how much storage we need and allocate that. A
second pass writes the actual string. Also add a va_end() that was missing.
This should be much faster for large strings and less wasteful for small ones.
A quirk that has been retained is that some callers patch in a newline at the
end of the returned string and depend on alloc_vprintf to allocate at least
one byte extra.
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Signed-off-by: Zachary T Welch <zw@superlucidity.net>
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Add $HOME/.openocd as the first default script search directory, allowing
the user to override the standard scripts.
Update the user guide with information on where OpenOCD expects to find
configuration files and scripts. Also fixed some minor formatting issues.
Add entry to NEWS as well.
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Allocate working structures on stack to avoid issues with
path lengths + reduce stack usage.
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
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Add this to ease debugging why the standard scripts aren't
found on the default script search path in some build/install
enviroments. Especially on Windows it's not straight forward
where openocd actually looks for the scripts.
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
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Use insertion sort to the command link lists. The only practical effect
of this is to order the output of the new 'help' command.
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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.
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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.
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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).
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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.
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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.
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Avoid requiring double pointers where a single would suffice.
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Splits argument allocation out from script command, reusing free() code.
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Removing the fast command eliminates the fast_and_dangerous global,
which was used only by arm7_9_common as an initializer. The command
is not called in the tree; instead, more explicit commands are used.
The jim_global_long function was not used anywhere in the tree.
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This patch changes the behavior of all boolean parsing callers to
accept any one of "true/enable/on/yes/1" or "false/disable/off/no/0".
Since one particular pair will be most appropriate in any given
situation, the specific macros should continue to be used in
order to display the most informative error messages possible.
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Rewrite arm11_handle_bool to provide a generic on/off command helper.
Refactors COMMAND_PARSE_BOOL to use new command_parse_bool helper,
which gets reused by the new command_parse_bool_any helper.
This later helper is called by the new command helper function to
accepts any on/off, enable/disable, true/false, yes/no, or 0/1 parameter.
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Adds several macros similar to COMMAND_PARSE_NUMBER, but for parsing
boolean command arguments. Two flavors are provided to provide
drop-in compatibility with existing code, allow for the elimination
of a lot of code bloat while improving the error checking and reporting.
COMMAND_PARSE_ON_OFF parses "on"/"off" command parameters.
COMMAND_PARSE_ENABLE parses "enable"/"disable" command parameters.
Both print the error and return an error out of the calling function.
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Removes external linkage from helper module, making the startup
code a parameter to a new command context's initialization routine.
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Moves definitions for each layer into their own file, eliminating
layering violations in the built-in TCL code. Updates src/Makefile.am
rules to include all files in the final startup.tcl input file, and
others Makefile.am rules to distribute the new files in our packages.
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Moves the creation of startup_tcl.c from src/helper/ to src/.
Prepares to split the startup.tcl file into its per-module parts.
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Update CMD_NAME from its migratory home in CMD_ARGV[-1] to cmd->name.
Allows CMD_ARGV++ idiom to be used safely in command handlers.
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Adds the command_invocation structure to encapsulate parameters for
all COMMAND_HANDLER routines. Rather than passing several arguments
to each successive subroutine, a single pointer may be passed around.
Changes the CMD_* macros to reference the new fields.
Updates run_command to create an instance and pass it to the handler.
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Convert all command handler 'cmd_ctx' parameter usage with CMD_CTX.
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