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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [common/] [hw-instances.h] - Blame information for rev 816

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1 227 jeremybenn
/* The common simulator framework for GDB, the GNU Debugger.
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   Copyright 2002, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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   Contributed by Andrew Cagney and Red Hat.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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#ifndef HW_INSTANCES_H
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#define HW_INSTANCES_H
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/* Instances:
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   As with IEEE1275, a device can be opened, creating an instance.
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   Instances provide more abstract interfaces to the underlying
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   hardware.  For example, the instance methods for a disk may include
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   code that is able to interpret file systems found on disks.  Such
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   methods would there for allow the manipulation of files on the
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   disks file system.  The operations would be implemented using the
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   basic block I/O model provided by the disk.
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   This model includes methods that faciliate the creation of device
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   instance and (should a given device support it) standard operations
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   on those instances.
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   */
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struct hw_instance;
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typedef void (hw_finish_instance_method)
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     (struct hw *hw,
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      struct hw_instance *);
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extern void set_hw_finish_instance
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(struct hw *hw,
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 hw_finish_instance_method *method);
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/* construct an instance of the hardware */
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struct hw_instance *hw_instance_create
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(struct hw *hw,
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 struct hw_instance *parent,
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 const char *path,
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 const char *args);
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struct hw_instance *hw_instance_interceed
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(struct hw_instance *parent,
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 const char *path,
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 const char *args);
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void hw_instance_delete
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(struct hw_instance *instance);
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/* methods applied to an instance of the hw */
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typedef int (hw_instance_read_method)
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     (struct hw_instance *instance,
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      void *addr,
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      unsigned_cell len);
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#define hw_instance_read(instance, addr, len) \
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((instance)->to_instance_read ((instance), (addr), (len)))
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#define set_hw_instance_read(instance, method) \
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((instance)->to_instance_read = (method))
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typedef int (hw_instance_write_method)
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     (struct hw_instance *instance,
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      const void *addr,
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      unsigned_cell len);
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#define hw_instance_write(instance, addr, len) \
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((instance)->to_instance_write ((instance), (addr), (len)))
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#define set_hw_instance_write(instance, method) \
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((instance)->to_instance_write = (method))
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typedef int (hw_instance_seek_method)
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     (struct hw_instance *instance,
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      unsigned_cell pos_hi,
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      unsigned_cell pos_lo);
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#define hw_instance_seek(instance, pos_hi, pos_lo) \
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((instance)->to_instance_seek ((instance), (pos_hi), (pos_lo)));
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#define set_hw_instance_seek(instance, method) \
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((instance)->to_instance_seek = (method))
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int hw_instance_call_method
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(struct hw_instance *instance,
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 const char *method,
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 int n_stack_args,
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 unsigned_cell stack_args[/*n_stack_args + 1(NULL)*/],
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 int n_stack_returns,
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 unsigned_cell stack_returns[/*n_stack_returns + 1(NULL)*/]);
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/* the definition of the instance */
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#define hw_instance_hw(instance) ((instance)->hw_of_instance + 0)
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#define hw_instance_path(instance) ((instance)->path_of_instance + 0)
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#define hw_instance_args(instance) ((instance)->args_of_instance)
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#define hw_instance_data(instance) ((instance)->data_of_instance)
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#define hw_instance_system(instance) (hw_system (hw_instance_hw (instance)))
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/* Finally an instance of a hardware device - keep your grubby little
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   mits off of these internals! :-) */
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struct hw_instance {
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  void *data_of_instance;
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  char *args_of_instance;
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  char *path_of_instance;
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  /* the device that owns the instance */
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  struct hw *hw_of_instance;
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  struct hw_instance *sibling_of_instance;
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  /* interposed instance */
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  struct hw_instance *parent_of_instance;
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  struct hw_instance *child_of_instance;
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  /* methods */
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  hw_instance_read_method *to_instance_read;
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  hw_instance_write_method *to_instance_write;
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  hw_instance_seek_method *to_instance_seek;
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};
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#endif

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