| /* m32r device support |
| Copyright (C) 1997, 1998 Free Software Foundation, Inc. |
| Contributed by Cygnus Solutions. |
| |
| This file is part of GDB, the GNU debugger. |
| |
| 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 2, 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, write to the Free Software Foundation, Inc., |
| 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "sim-main.h" |
| |
| #ifdef HAVE_DV_SOCKSER |
| #include "dv-sockser.h" |
| #endif |
| |
| /* Handling the MSPR register is done by creating a device in the core |
| mapping that winds up here. */ |
| |
| device m32r_devices; |
| |
| int |
| device_io_read_buffer (device *me, void *source, int space, |
| address_word addr, unsigned nr_bytes, |
| SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) |
| { |
| if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) |
| return nr_bytes; |
| |
| #ifdef HAVE_DV_SOCKSER |
| if (addr == UART_INCHAR_ADDR) |
| { |
| int c = dv_sockser_read (sd); |
| if (c == -1) |
| return 0; |
| *(char *) source = c; |
| return 1; |
| } |
| if (addr == UART_STATUS_ADDR) |
| { |
| int status = dv_sockser_status (sd); |
| unsigned char *p = source; |
| p[0] = 0; |
| p[1] = (((status & DV_SOCKSER_INPUT_EMPTY) |
| #ifdef UART_INPUT_READY0 |
| ? UART_INPUT_READY : 0) |
| #else |
| ? 0 : UART_INPUT_READY) |
| #endif |
| + ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0)); |
| return 2; |
| } |
| #endif |
| |
| return nr_bytes; |
| } |
| |
| int |
| device_io_write_buffer (device *me, const void *source, int space, |
| address_word addr, unsigned nr_bytes, |
| SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) |
| { |
| #if WITH_SCACHE |
| /* MSPR support is deprecated but is kept in for upward compatibility |
| with existing overlay support. */ |
| if (addr == MSPR_ADDR) |
| { |
| if ((*(const char *) source & MSPR_PURGE) != 0) |
| scache_flush (sd); |
| return nr_bytes; |
| } |
| if (addr == MCCR_ADDR) |
| { |
| if ((*(const char *) source & MCCR_CP) != 0) |
| scache_flush (sd); |
| return nr_bytes; |
| } |
| #endif |
| |
| if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) |
| return nr_bytes; |
| |
| #ifdef HAVE_DV_SOCKSER |
| if (addr == UART_OUTCHAR_ADDR) |
| { |
| int rc = dv_sockser_write (sd, *(char *) source); |
| return rc == 1; |
| } |
| #endif |
| |
| return nr_bytes; |
| } |
| |
| void |
| device_error (device *me, char *message, ...) |
| { |
| } |