params.h File Reference

Parameter handling. More...

#include <nul/compiler.h>

Macros
#define	PARAM_HANDLER(NAME,...)
	Defines strings and functions for a parameter with the given name.
#define	PARAM_ALIAS(NAME, DESC, VALUE)   PARAM_HANDLER(NAME, #NAME " - " DESC, "value: " VALUE) { mb.parse_args(VALUE); }
	Define an alias for a set of parameters.

Variables
long	__param_table_start
long	__param_table_end

Detailed Description

Parameter handling.

Copyright (C) 2009, Bernhard Kauer bk@vm.nosp@m.mon..nosp@m.org Economic rights: Technische Universitaet Dresden (Germany)

This file is part of Vancouver.

Vancouver is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation.

Vancouver is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License version 2 for more details.

Macro Definition Documentation

#define PARAM_ALIAS	(		NAME,
			DESC,
			VALUE
	)		PARAM_HANDLER(NAME, #NAME " - " DESC, "value: " VALUE) { mb.parse_args(VALUE); }

Define an alias for a set of parameters.

#define PARAM_HANDLER	(		NAME,
			...
	)

Value:

const char * __parameter_##NAME##_strings[] asm ("__parameter_" #NAME "_strings") = { #NAME, ##__VA_ARGS__, 0}; \
  asm volatile (".section .param; .long __parameter_" #NAME "_function, __parameter_" #NAME "_strings; .previous;"); \
  EXTERN_C void __parameter_##NAME##_function(Motherboard &mb, unsigned long *argv, const char *args, unsigned args_len)

Defines strings and functions for a parameter with the given name.

The variadic part is used to store a help text.

PARAM_HANDLER(example, "example - this is just an example for parameter Passing", "Another help line...") { Logging::printf("example parameter function called!\n"); }

Variable Documentation

long __param_table_end

long __param_table_start