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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [sim/] [m32r/] [devices.c] - Rev 300
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/* m32r device support Copyright (C) 1997, 1998, 2007, 2008 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 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/>. */ #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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