projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| ff8c385a DE |
1 | /* m32r device support |
| 2 | Copyright (C) 1997, 1998 Free Software Foundation, Inc. | |
| 3 | Contributed by Cygnus Solutions. | |
| 4 | ||
| 5 | This file is part of GDB, the GNU debugger. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 2, or (at your option) | |
| 10 | any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License along | |
| 18 | with this program; if not, write to the Free Software Foundation, Inc., | |
| 19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
| 20 | ||
| 21 | #include "sim-main.h" | |
| 22 | ||
| 23 | #ifdef HAVE_DV_SOCKSER | |
| 24 | #include "dv-sockser.h" | |
| 25 | #endif | |
| 26 | ||
| 27 | /* Handling the MSPR register is done by creating a device in the core | |
| 28 | mapping that winds up here. */ | |
| 29 | ||
| 30 | device m32r_devices; | |
| 31 | ||
| 32 | int | |
| 33 | device_io_read_buffer (device *me, void *source, int space, | |
| 34 | address_word addr, unsigned nr_bytes, | |
| 35 | SIM_CPU *cpu, sim_cia cia) | |
| 36 | { | |
| 37 | SIM_DESC sd = CPU_STATE (cpu); | |
| 38 | ||
| 39 | if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) | |
| 40 | return nr_bytes; | |
| 41 | ||
| 42 | #ifdef HAVE_DV_SOCKSER | |
| 43 | if (addr == UART_INCHAR_ADDR) | |
| 44 | { | |
| 45 | int c = dv_sockser_read (sd); | |
| 46 | if (c == -1) | |
| 47 | return 0; | |
| 48 | *(char *) source = c; | |
| 49 | return 1; | |
| 50 | } | |
| 51 | if (addr == UART_STATUS_ADDR) | |
| 52 | { | |
| 53 | int status = dv_sockser_status (sd); | |
| 54 | unsigned char *p = source; | |
| 55 | p[0] = 0; | |
| 56 | p[1] = (((status & DV_SOCKSER_INPUT_EMPTY) | |
| 57 | #ifdef UART_INPUT_READY0 | |
| 58 | ? UART_INPUT_READY : 0) | |
| 59 | #else | |
| 60 | ? 0 : UART_INPUT_READY) | |
| 61 | #endif | |
| 62 | + ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0)); | |
| 63 | return 2; | |
| 64 | } | |
| 65 | #endif | |
| 66 | ||
| 67 | return nr_bytes; | |
| 68 | } | |
| 69 | ||
| 70 | int | |
| 71 | device_io_write_buffer (device *me, const void *source, int space, | |
| 72 | address_word addr, unsigned nr_bytes, | |
| 73 | SIM_CPU *cpu, sim_cia cia) | |
| 74 | { | |
| 75 | SIM_DESC sd = CPU_STATE (cpu); | |
| 76 | ||
| 77 | #if WITH_SCACHE | |
| 78 | /* MSPR support is deprecated but is kept in for upward compatibility | |
| 79 | with existing overlay support. */ | |
| 80 | if (addr == MSPR_ADDR) | |
| 81 | { | |
| 82 | if ((*(const char *) source & MSPR_PURGE) != 0) | |
| 83 | scache_flush (sd); | |
| 84 | return nr_bytes; | |
| 85 | } | |
| 86 | if (addr == MCCR_ADDR) | |
| 87 | { | |
| 88 | if ((*(const char *) source & MCCR_CP) != 0) | |
| 89 | scache_flush (sd); | |
| 90 | return nr_bytes; | |
| 91 | } | |
| 92 | #endif | |
| 93 | ||
| 94 | if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) | |
| 95 | return nr_bytes; | |
| 96 | ||
| 97 | #if HAVE_DV_SOCKSER | |
| 98 | if (addr == UART_OUTCHAR_ADDR) | |
| 99 | { | |
| 100 | int rc = dv_sockser_write (sd, *(char *) source); | |
| 101 | return rc == 1; | |
| 102 | } | |
| 103 | #endif | |
| 104 | ||
| 105 | return nr_bytes; | |
| 106 | } | |
| 107 | ||
| 108 | void device_error () {} |