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[/] [openrisc/] [trunk/] [gnu-old/] [gdb-6.8/] [sim/] [frv/] [devices.c] - Rev 856
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/* frv device support Copyright (C) 1998, 1999, 2007, 2008 Free Software Foundation, Inc. Contributed by Red Hat. This file is part of the GNU simulators. 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/>. */ /* ??? All of this is just to get something going. wip! */ #include "sim-main.h" #ifdef HAVE_DV_SOCKSER #include "dv-sockser.h" #endif device frv_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 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; #if 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, ...) {}
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