* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
-#ifndef COMMAND_H
-#define COMMAND_H
-#include <stdio.h>
+#ifndef OPENOCD_HELPER_COMMAND_H
+#define OPENOCD_HELPER_COMMAND_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <jim-nvp.h>
+
+#include <helper/types.h>
+
+/* To achieve C99 printf compatibility in MinGW, gnu_printf should be
+ * used for __attribute__((format( ... ))), with GCC v4.4 or later
+ */
+#if (defined(IS_MINGW) && (((__GNUC__ << 16) + __GNUC_MINOR__) >= 0x00040004))
+#define PRINTF_ATTRIBUTE_FORMAT gnu_printf
+#else
+#define PRINTF_ATTRIBUTE_FORMAT printf
+#endif
-enum command_mode
-{
+enum command_mode {
COMMAND_EXEC,
COMMAND_CONFIG,
COMMAND_ANY,
};
-typedef struct command_context_s
-{
+struct command_context;
+
+/** The type signature for command context's output handler. */
+typedef int (*command_output_handler_t)(struct command_context *context,
+ const char *line);
+
+struct command_context {
+ Jim_Interp *interp;
enum command_mode mode;
- struct command_s *commands;
- int current_target;
- /* Execute a command.
- *
- * If the command fails, it *MUST* return a value != ERROR_OK
- * (many commands break this rule, patches welcome!)
- *
- * This is *especially* important for commands such as writing
- * to flash or verifying memory. The reason is that those commands
- * can be used by programs to determine if the operation succeded
- * or not. If the operation failed, then a program can try
- * an alternative approach.
- *
- * Returning ERROR_COMMAND_SYNTAX_ERROR will have the effect of
- * printing out the syntax of the command.
- */
- int (*output_handler)(struct command_context_s *context, const char* line);
+ struct command *commands;
+ struct target *current_target;
+ /* The target set by 'targets xx' command or the latest created */
+ struct target *current_target_override;
+ /* If set overrides current_target
+ * It happens during processing of
+ * 1) a target prefixed command
+ * 2) an event handler
+ * Pay attention to reentrancy when setting override.
+ */
+ command_output_handler_t output_handler;
void *output_handler_priv;
-} command_context_t;
+};
+
+struct command;
+
+/**
+ * When run_command is called, a new instance will be created on the
+ * stack, filled with the proper values, and passed by reference to the
+ * required COMMAND_HANDLER routine.
+ */
+struct command_invocation {
+ struct command_context *ctx;
+ struct command *current;
+ const char *name;
+ unsigned argc;
+ const char **argv;
+ Jim_Obj *output;
+};
+
+/**
+ * Command handlers may be defined with more parameters than the base
+ * set provided by command.c. This macro uses C99 magic to allow
+ * defining all such derivative types using this macro.
+ */
+#define __COMMAND_HANDLER(name, extra ...) \
+ int name(struct command_invocation *cmd, ## extra)
+
+/**
+ * Use this to macro to call a command helper (or a nested handler).
+ * It provides command handler authors protection against reordering or
+ * removal of unused parameters.
+ *
+ * @b Note: This macro uses lexical capture to provide some arguments.
+ * As a result, this macro should be used @b only within functions
+ * defined by the COMMAND_HANDLER or COMMAND_HELPER macros. Those
+ * macros provide the expected lexical context captured by this macro.
+ * Furthermore, it should be used only from the top-level of handler or
+ * helper function, or care must be taken to avoid redefining the same
+ * variables in intervening scope(s) by accident.
+ */
+#define CALL_COMMAND_HANDLER(name, extra ...) \
+ name(cmd, ## extra)
-typedef struct command_s
-{
+/**
+ * Always use this macro to define new command handler functions.
+ * It ensures the parameters are ordered, typed, and named properly, so
+ * they be can be used by other macros (e.g. COMMAND_PARSE_NUMBER).
+ * All command handler functions must be defined as static in scope.
+ */
+#define COMMAND_HANDLER(name) \
+ static __COMMAND_HANDLER(name)
+
+/**
+ * Similar to COMMAND_HANDLER, except some parameters are expected.
+ * A helper is globally-scoped because it may be shared between several
+ * source files (e.g. the s3c24xx device command helper).
+ */
+#define COMMAND_HELPER(name, extra ...) __COMMAND_HANDLER(name, extra)
+
+/**
+ * Use this macro to access the command being handled,
+ * rather than accessing the variable directly. It may be moved.
+ */
+#define CMD (cmd)
+/**
+ * Use this macro to access the context of the command being handled,
+ * rather than accessing the variable directly. It may be moved.
+ */
+#define CMD_CTX (cmd->ctx)
+/**
+ * Use this macro to access the number of arguments for the command being
+ * handled, rather than accessing the variable directly. It may be moved.
+ */
+#define CMD_ARGC (cmd->argc)
+/**
+ * Use this macro to access the arguments for the command being handled,
+ * rather than accessing the variable directly. It may be moved.
+ */
+#define CMD_ARGV (cmd->argv)
+/**
+ * Use this macro to access the name of the command being handled,
+ * rather than accessing the variable directly. It may be moved.
+ */
+#define CMD_NAME (cmd->name)
+/**
+ * Use this macro to access the current command being handled,
+ * rather than accessing the variable directly. It may be moved.
+ */
+#define CMD_CURRENT (cmd->current)
+/**
+ * Use this macro to access the invoked command handler's data pointer,
+ * rather than accessing the variable directly. It may be moved.
+ */
+#define CMD_DATA (CMD_CURRENT->jim_handler_data)
+
+/**
+ * The type signature for command handling functions. They are
+ * usually registered as part of command_registration, providing
+ * a high-level means for executing a command.
+ *
+ * If the command fails, it *MUST* return a value != ERROR_OK
+ * (many commands break this rule, patches welcome!)
+ *
+ * This is *especially* important for commands such as writing
+ * to flash or verifying memory. The reason is that those commands
+ * can be used by programs to determine if the operation succeded
+ * or not. If the operation failed, then a program can try
+ * an alternative approach.
+ *
+ * Returning ERROR_COMMAND_SYNTAX_ERROR will have the effect of
+ * printing out the syntax of the command.
+ */
+typedef __COMMAND_HANDLER((*command_handler_t));
+
+struct command {
char *name;
- struct command_s *parent;
- struct command_s *children;
- int (*handler)(struct command_context_s *context, char* name, char** args, int argc);
- enum command_mode mode;
char *help;
- struct command_s *next;
-} command_t;
-
-extern command_t* register_command(command_context_t *context, command_t *parent, char *name, int (*handler)(struct command_context_s *context, char* name, char** args, int argc), enum command_mode mode, char *help);
-extern int unregister_command(command_context_t *context, char *name);
-extern int unregister_all_commands(command_context_t *context);
-extern void command_set_output_handler(command_context_t* context, int (*output_handler)(struct command_context_s *context, const char* line), void *priv);
-extern command_context_t* copy_command_context(command_context_t* context);
-extern command_context_t* command_init();
-extern int command_done(command_context_t *context);
-extern void command_print(command_context_t *context, char *format, ...);
-extern void command_print_sameline(command_context_t *context, char *format, ...);
-extern int command_run_line(command_context_t *context, char *line);
-extern int command_run_linef(command_context_t *context, char *format, ...);
-extern int command_run_line_internal(command_context_t *context, char *line);
-extern void command_output_text(command_context_t *context, const char *data);
-
-#define ERROR_COMMAND_CLOSE_CONNECTION (-600)
-#define ERROR_COMMAND_SYNTAX_ERROR (-601)
-#define ERROR_COMMAND_NOTFOUND (-602)
-
-extern int fast_and_dangerous;
-
-#endif /* COMMAND_H */
+ char *usage;
+ struct command *parent;
+ struct command *children;
+ command_handler_t handler;
+ Jim_CmdProc *jim_handler;
+ void *jim_handler_data;
+ /* Currently used only for target of target-prefixed cmd.
+ * Native OpenOCD commands use jim_handler_data exclusively
+ * as a target override.
+ * Jim handlers outside of target cmd tree can use
+ * jim_handler_data for any handler specific data */
+ enum command_mode mode;
+ struct command *next;
+};
+
+/*
+ * Commands should be registered by filling in one or more of these
+ * structures and passing them to [un]register_commands().
+ *
+ * A conventioal format should be used for help strings, to provide both
+ * usage and basic information:
+ * @code
+ * "@<options@> ... - some explanation text"
+ * @endcode
+ *
+ * @param name The name of the command to register, which must not have
+ * been registered previously in the intended context.
+ * @param handler The callback function that will be called. If NULL,
+ * then the command serves as a placeholder for its children or a script.
+ * @param mode The command mode(s) in which this command may be run.
+ * @param help The help text that will be displayed to the user.
+ */
+struct command_registration {
+ const char *name;
+ command_handler_t handler;
+ Jim_CmdProc *jim_handler;
+ enum command_mode mode;
+ const char *help;
+ /** a string listing the options and arguments, required or optional */
+ const char *usage;
+
+ /**
+ * If non-NULL, the commands in @c chain will be registered in
+ * the same context and scope of this registration record.
+ * This allows modules to inherit lists commands from other
+ * modules.
+ */
+ const struct command_registration *chain;
+};
+
+/** Use this as the last entry in an array of command_registration records. */
+#define COMMAND_REGISTRATION_DONE { .name = NULL, .chain = NULL }
+
+/**
+ * Register one or more commands in the specified context, as children
+ * of @c parent (or top-level commends, if NULL). In a registration's
+ * record contains a non-NULL @c chain member and name is NULL, the
+ * commands on the chain will be registered in the same context.
+ * Otherwise, the chained commands are added as children of the command.
+ *
+ * @param cmd_ctx The command_context in which to register the command.
+ * @param parent Register this command as a child of this, or NULL to
+ * register a top-level command.
+ * @param cmds Pointer to an array of command_registration records that
+ * contains the desired command parameters. The last record must have
+ * NULL for all fields.
+ * @returns ERROR_OK on success; ERROR_FAIL if any registration fails.
+ */
+int register_commands(struct command_context *cmd_ctx, struct command *parent,
+ const struct command_registration *cmds);
+
+/**
+ * Unregisters all commands from the specfied context.
+ * @param cmd_ctx The context that will be cleared of registered commands.
+ * @param parent If given, only clear commands from under this one command.
+ * @returns ERROR_OK on success, or an error code.
+ */
+int unregister_all_commands(struct command_context *cmd_ctx,
+ struct command *parent);
+
+struct command *command_find_in_context(struct command_context *cmd_ctx,
+ const char *name);
+
+/**
+ * Update the private command data field for a command and all descendents.
+ * This is used when creating a new heirarchy of commands that depends
+ * on obtaining a dynamically created context. The value will be available
+ * in command handlers by using the CMD_DATA macro.
+ * @param c The command (group) whose data pointer(s) will be updated.
+ * @param p The new data pointer to use for the command or its descendents.
+ */
+void command_set_handler_data(struct command *c, void *p);
+
+void command_set_output_handler(struct command_context *context,
+ command_output_handler_t output_handler, void *priv);
+
+
+int command_context_mode(struct command_context *context, enum command_mode mode);
+
+/* Return the current command context associated with the Jim interpreter or
+ * alternatively the global default command interpreter
+ */
+struct command_context *current_command_context(Jim_Interp *interp);
+/**
+ * Creates a new command context using the startup TCL provided and
+ * the existing Jim interpreter, if any. If interp == NULL, then command_init
+ * creates a command interpreter.
+ */
+struct command_context *command_init(const char *startup_tcl, Jim_Interp *interp);
+/**
+ * Shutdown a command context.
+ *
+ * Free the command context and the associated Jim interpreter.
+ *
+ * @param context The command_context that will be destroyed.
+ */
+void command_exit(struct command_context *context);
+/**
+ * Creates a copy of an existing command context. This does not create
+ * a deep copy of the command list, so modifications in one context will
+ * affect all shared contexts. The caller must track reference counting
+ * and ensure the commands are freed before destroying the last instance.
+ * @param cmd_ctx The command_context that will be copied.
+ * @returns A new command_context with the same state as the original.
+ */
+struct command_context *copy_command_context(struct command_context *cmd_ctx);
+/**
+ * Frees the resources associated with a command context. The commands
+ * are not removed, so unregister_all_commands() must be called first.
+ * @param context The command_context that will be destroyed.
+ */
+void command_done(struct command_context *context);
+
+void command_print(struct command_invocation *cmd, const char *format, ...)
+__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
+void command_print_sameline(struct command_invocation *cmd, const char *format, ...)
+__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
+int command_run_line(struct command_context *context, char *line);
+int command_run_linef(struct command_context *context, const char *format, ...)
+__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
+void command_output_text(struct command_context *context, const char *data);
+
+void process_jim_events(struct command_context *cmd_ctx);
+
+#define ERROR_COMMAND_CLOSE_CONNECTION (-600)
+#define ERROR_COMMAND_SYNTAX_ERROR (-601)
+#define ERROR_COMMAND_NOTFOUND (-602)
+#define ERROR_COMMAND_ARGUMENT_INVALID (-603)
+#define ERROR_COMMAND_ARGUMENT_OVERFLOW (-604)
+#define ERROR_COMMAND_ARGUMENT_UNDERFLOW (-605)
+
+int parse_ulong(const char *str, unsigned long *ul);
+int parse_ullong(const char *str, unsigned long long *ul);
+
+int parse_long(const char *str, long *ul);
+int parse_llong(const char *str, long long *ul);
+
+#define DECLARE_PARSE_WRAPPER(name, type) \
+ int parse ## name(const char *str, type * ul)
+
+DECLARE_PARSE_WRAPPER(_uint, unsigned);
+DECLARE_PARSE_WRAPPER(_u64, uint64_t);
+DECLARE_PARSE_WRAPPER(_u32, uint32_t);
+DECLARE_PARSE_WRAPPER(_u16, uint16_t);
+DECLARE_PARSE_WRAPPER(_u8, uint8_t);
+
+DECLARE_PARSE_WRAPPER(_int, int);
+DECLARE_PARSE_WRAPPER(_s64, int64_t);
+DECLARE_PARSE_WRAPPER(_s32, int32_t);
+DECLARE_PARSE_WRAPPER(_s16, int16_t);
+DECLARE_PARSE_WRAPPER(_s8, int8_t);
+
+DECLARE_PARSE_WRAPPER(_target_addr, target_addr_t);
+
+/**
+ * @brief parses the string @a in into @a out as a @a type, or prints
+ * a command error and passes the error code to the caller. If an error
+ * does occur, the calling function will return the error code produced
+ * by the parsing function (one of ERROR_COMMAND_ARGUMENT_*).
+ *
+ * This function may cause the calling function to return immediately,
+ * so it should be used carefully to avoid leaking resources. In most
+ * situations, parsing should be completed in full before proceding
+ * to allocate resources, and this strategy will most prevents leaks.
+ */
+#define COMMAND_PARSE_NUMBER(type, in, out) \
+ do { \
+ int retval_macro_tmp = parse_ ## type(in, &(out)); \
+ if (ERROR_OK != retval_macro_tmp) { \
+ command_print(CMD, stringify(out) \
+ " option value ('%s') is not valid", in); \
+ return retval_macro_tmp; \
+ } \
+ } while (0)
+
+#define COMMAND_PARSE_ADDRESS(in, out) \
+ COMMAND_PARSE_NUMBER(target_addr, in, out)
+
+/**
+ * Parse the string @c as a binary parameter, storing the boolean value
+ * in @c out. The strings @c on and @c off are used to match different
+ * strings for true and false options (e.g. "on" and "off" or
+ * "enable" and "disable").
+ */
+#define COMMAND_PARSE_BOOL(in, out, on, off) \
+ do { \
+ bool value; \
+ int retval_macro_tmp = command_parse_bool_arg(in, &value); \
+ if (ERROR_OK != retval_macro_tmp) { \
+ command_print(CMD, stringify(out) \
+ " option value ('%s') is not valid", in); \
+ command_print(CMD, " choices are '%s' or '%s'", \
+ on, off); \
+ return retval_macro_tmp; \
+ } \
+ out = value; \
+ } while (0)
+
+int command_parse_bool_arg(const char *in, bool *out);
+COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label);
+
+/** parses an on/off command argument */
+#define COMMAND_PARSE_ON_OFF(in, out) \
+ COMMAND_PARSE_BOOL(in, out, "on", "off")
+/** parses an enable/disable command argument */
+#define COMMAND_PARSE_ENABLE(in, out) \
+ COMMAND_PARSE_BOOL(in, out, "enable", "disable")
+
+void script_debug(Jim_Interp *interp, unsigned int argc, Jim_Obj * const *argv);
+
+#endif /* OPENOCD_HELPER_COMMAND_H */
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