/* Common hardware header file.
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/* Common hardware header file.
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Copyright (C) 1998, 2007, 2008 Free Software Foundation, Inc.
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Copyright (C) 1998, 2007, 2008 Free Software Foundation, Inc.
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Contributed by Andrew Cagney and Cygnus Support.
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Contributed by Andrew Cagney and Cygnus Support.
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This file is part of GDB, the GNU debugger.
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This file is part of GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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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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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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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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(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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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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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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef HW_MAIN
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#ifndef HW_MAIN
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#define HW_MAIN
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#define HW_MAIN
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/* establish a type system */
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/* establish a type system */
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#include "sim-basics.h"
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#include "sim-basics.h"
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/* construct a hw device */
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/* construct a hw device */
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#include "hw-device.h"
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#include "hw-device.h"
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#include "hw-properties.h"
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#include "hw-properties.h"
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#include "hw-events.h"
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#include "hw-events.h"
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#include "hw-alloc.h"
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#include "hw-alloc.h"
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#include "hw-instances.h"
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#include "hw-instances.h"
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#include "hw-handles.h"
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#include "hw-handles.h"
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#include "hw-ports.h"
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#include "hw-ports.h"
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/* Description of a hardware device */
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/* Description of a hardware device */
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typedef void (hw_finish_method)
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typedef void (hw_finish_method)
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(struct hw *me);
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(struct hw *me);
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struct hw_descriptor {
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struct hw_descriptor {
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const char *family;
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const char *family;
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hw_finish_method *to_finish;
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hw_finish_method *to_finish;
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};
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};
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/* Helper functions to make the implementation of a device easier */
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/* Helper functions to make the implementation of a device easier */
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/* Go through the devices reg properties and look for those specifying
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/* Go through the devices reg properties and look for those specifying
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an address to attach various registers to */
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an address to attach various registers to */
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void do_hw_attach_regs (struct hw *me);
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void do_hw_attach_regs (struct hw *me);
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/* Perform a polling read on FD returning either the number of bytes
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/* Perform a polling read on FD returning either the number of bytes
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or a hw_io status code that indicates the reason for the read
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or a hw_io status code that indicates the reason for the read
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failure */
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failure */
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enum {
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enum {
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HW_IO_EOF = -1, HW_IO_NOT_READY = -2, /* See: IEEE 1275 */
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HW_IO_EOF = -1, HW_IO_NOT_READY = -2, /* See: IEEE 1275 */
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};
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};
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typedef int (do_hw_poll_read_method)
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typedef int (do_hw_poll_read_method)
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(SIM_DESC sd, int, char *, int);
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(SIM_DESC sd, int, char *, int);
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int do_hw_poll_read
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int do_hw_poll_read
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(struct hw *me,
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(struct hw *me,
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do_hw_poll_read_method *read,
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do_hw_poll_read_method *read,
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int sim_io_fd,
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int sim_io_fd,
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void *buf,
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void *buf,
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unsigned size_of_buf);
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unsigned size_of_buf);
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#endif
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#endif
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