| 1 | /* Common hardware header file. |
| 2 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
| 3 | Contributed by Andrew Cagney and Cygnus Support. |
| 4 | |
| 5 | This file is part of GDB, the GNU debugger. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | |
| 21 | #ifndef HW_MAIN |
| 22 | #define HW_MAIN |
| 23 | |
| 24 | /* establish a type system */ |
| 25 | #include "sim-basics.h" |
| 26 | |
| 27 | /* construct a hw device */ |
| 28 | #include "hw-device.h" |
| 29 | #include "hw-properties.h" |
| 30 | #include "hw-events.h" |
| 31 | #include "hw-alloc.h" |
| 32 | #include "hw-instances.h" |
| 33 | #include "hw-handles.h" |
| 34 | #include "hw-ports.h" |
| 35 | |
| 36 | /* Description of a hardware device */ |
| 37 | |
| 38 | typedef void (hw_finish_method) |
| 39 | (struct hw *me); |
| 40 | |
| 41 | struct hw_descriptor |
| 42 | { |
| 43 | const char *family; |
| 44 | hw_finish_method *to_finish; |
| 45 | }; |
| 46 | |
| 47 | /* Helper functions to make the implementation of a device easier */ |
| 48 | |
| 49 | /* Go through the devices reg properties and look for those specifying |
| 50 | an address to attach various registers to */ |
| 51 | |
| 52 | void do_hw_attach_regs (struct hw *me); |
| 53 | |
| 54 | /* Perform a polling read on FD returning either the number of bytes |
| 55 | or a hw_io status code that indicates the reason for the read |
| 56 | failure */ |
| 57 | |
| 58 | enum |
| 59 | { |
| 60 | HW_IO_EOF = -1, HW_IO_NOT_READY = -2, /* See: IEEE 1275 */ |
| 61 | }; |
| 62 | |
| 63 | typedef int (do_hw_poll_read_method) |
| 64 | (SIM_DESC sd, int, char *, int); |
| 65 | |
| 66 | int do_hw_poll_read |
| 67 | (struct hw *me, |
| 68 | do_hw_poll_read_method *read, |
| 69 | int sim_io_fd, |
| 70 | void *buf, |
| 71 | unsigned size_of_buf); |
| 72 | |
| 73 | |
| 74 | #endif |