| /* Target dependent code for ARC processor family, for GDB, the GNU debugger. |
| |
| Copyright 2008, 2009 Free Software Foundation, Inc. |
| |
| Contributed by ARC International (www.arc.com) |
| |
| Authors: |
| Richard Stuckey <richard.stuckey@arc.com> |
| |
| This file is part of GDB. |
| |
| 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 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| /******************************************************************************/ |
| /* */ |
| /* Outline: */ |
| /* This module implements a dummy set of operations for reading data from */ |
| /* / writing data to a parallel port using a GPIO (General Purpose Input/ */ |
| /* Output) driver. */ |
| /* */ |
| /* It is useful for testing when no hardware target is available. */ |
| /* */ |
| /******************************************************************************/ |
| |
| #include "arc-gpio.h" |
| |
| |
| /* -------------------------------------------------------------------------- */ |
| /* externally visible data */ |
| /* -------------------------------------------------------------------------- */ |
| |
| /* This is set to TRUE if an I/O error occurs in accessing the port. |
| (This never happens in this dummy module). */ |
| Boolean gpio_port_error; |
| |
| |
| /* -------------------------------------------------------------------------- */ |
| /* externally visible functions */ |
| /* -------------------------------------------------------------------------- */ |
| |
| /* Initialization of the GPIO interface. */ |
| |
| Boolean |
| gpio_open (void) |
| { |
| gpio_port_error = FALSE; |
| return TRUE; |
| } |
| |
| |
| /* Close the GPIO interface. */ |
| |
| void |
| gpio_close (void) |
| { |
| } |
| |
| |
| /* Write a byte of data to the given port. */ |
| |
| void |
| gpio_write (ParallelPort port, Byte data) |
| { |
| } |
| |
| |
| /* Read a byte of data from the given port. */ |
| |
| Byte |
| gpio_read (ParallelPort port) |
| { |
| return 0; |
| } |
| |
| |
| /* Write a series of bytes of data to the ports. */ |
| |
| void |
| gpio_write_array (GPIO_Pair array[], unsigned int num_elements) |
| { |
| } |
| |
| /******************************************************************************/ |