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[/] [or1k/] [tags/] [start/] [insight/] [sim/] [m32r/] [devices.c] - Rev 578
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/* 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, ...) { }
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