1/* m32r device support 2 Copyright (C) 1997, 1998, 2007 Free Software Foundation, Inc. 3 Contributed by Cygnus Solutions. 4 5This file is part of GDB, the GNU debugger. 6 7This program is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 3 of the License, or 10(at your option) any later version. 11 12This program is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20#include "sim-main.h" 21 22#ifdef HAVE_DV_SOCKSER 23#include "dv-sockser.h" 24#endif 25 26/* Handling the MSPR register is done by creating a device in the core 27 mapping that winds up here. */ 28 29device m32r_devices; 30 31int 32device_io_read_buffer (device *me, void *source, int space, 33 address_word addr, unsigned nr_bytes, 34 SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) 35{ 36 if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) 37 return nr_bytes; 38 39#ifdef HAVE_DV_SOCKSER 40 if (addr == UART_INCHAR_ADDR) 41 { 42 int c = dv_sockser_read (sd); 43 if (c == -1) 44 return 0; 45 *(char *) source = c; 46 return 1; 47 } 48 if (addr == UART_STATUS_ADDR) 49 { 50 int status = dv_sockser_status (sd); 51 unsigned char *p = source; 52 p[0] = 0; 53 p[1] = (((status & DV_SOCKSER_INPUT_EMPTY) 54#ifdef UART_INPUT_READY0 55 ? UART_INPUT_READY : 0) 56#else 57 ? 0 : UART_INPUT_READY) 58#endif 59 + ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0)); 60 return 2; 61 } 62#endif 63 64 return nr_bytes; 65} 66 67int 68device_io_write_buffer (device *me, const void *source, int space, 69 address_word addr, unsigned nr_bytes, 70 SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) 71{ 72#if WITH_SCACHE 73 /* MSPR support is deprecated but is kept in for upward compatibility 74 with existing overlay support. */ 75 if (addr == MSPR_ADDR) 76 { 77 if ((*(const char *) source & MSPR_PURGE) != 0) 78 scache_flush (sd); 79 return nr_bytes; 80 } 81 if (addr == MCCR_ADDR) 82 { 83 if ((*(const char *) source & MCCR_CP) != 0) 84 scache_flush (sd); 85 return nr_bytes; 86 } 87#endif 88 89 if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) 90 return nr_bytes; 91 92#ifdef HAVE_DV_SOCKSER 93 if (addr == UART_OUTCHAR_ADDR) 94 { 95 int rc = dv_sockser_write (sd, *(char *) source); 96 return rc == 1; 97 } 98#endif 99 100 return nr_bytes; 101} 102 103void 104device_error (device *me, char *message, ...) 105{ 106} 107