1 /* Remote debugging interface for ABug Rom monitor for GDB, the GNU debugger. 2 Copyright 1995, 1996, 1998, 1999, 2000, 2001 3 Free Software Foundation, Inc. 4 5 Written by Rob Savoye of Cygnus Support 6 7 This file is part of GDB. 8 9 This program is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2 of the License, or 12 (at your option) any later version. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with this program; if not, write to the Free Software 21 Foundation, Inc., 59 Temple Place - Suite 330, 22 Boston, MA 02111-1307, USA. */ 23 24 #include "defs.h" 25 #include "gdbcore.h" 26 #include "target.h" 27 #include "monitor.h" 28 #include "serial.h" 29 #include "regcache.h" 30 31 #include "m68k-tdep.h" 32 33 /* Prototypes for local functions. */ 34 35 static void abug_open (char *args, int from_tty); 36 37 static void 38 abug_supply_register (char *regname, int regnamelen, char *val, int vallen) 39 { 40 int regno; 41 42 if (regnamelen != 2) 43 return; 44 45 switch (regname[0]) 46 { 47 case 'S': 48 if (regname[1] != 'R') 49 return; 50 regno = PS_REGNUM; 51 break; 52 case 'P': 53 if (regname[1] != 'C') 54 return; 55 regno = PC_REGNUM; 56 break; 57 case 'D': 58 if (regname[1] < '0' || regname[1] > '7') 59 return; 60 regno = regname[1] - '0' + M68K_D0_REGNUM; 61 break; 62 case 'A': 63 if (regname[1] < '0' || regname[1] > '7') 64 return; 65 regno = regname[1] - '0' + M68K_A0_REGNUM; 66 break; 67 default: 68 return; 69 } 70 71 monitor_supply_register (regno, val); 72 } 73 74 /* 75 * This array of registers needs to match the indexes used by GDB. The 76 * whole reason this exists is because the various ROM monitors use 77 * different names than GDB does, and don't support all the 78 * registers either. So, typing "info reg sp" becomes an "A7". 79 */ 80 81 static const char * 82 abug_regname (int index) 83 { 84 static char *regnames[] = 85 { 86 "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", 87 "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", 88 "PC", 89 }; 90 91 if ((index >= (sizeof (regnames) / sizeof (regnames[0]))) 92 || (index < 0) || (index >= NUM_REGS)) 93 return NULL; 94 else 95 return regnames[index]; 96 } 97 98 /* 99 * Define the monitor command strings. Since these are passed directly 100 * through to a printf style function, we need can include formatting 101 * strings. We also need a CR or LF on the end. 102 */ 103 104 static struct target_ops abug_ops; 105 106 static char *abug_inits[] = 107 {"\r", NULL}; 108 109 static struct monitor_ops abug_cmds; 110 111 static void 112 init_abug_cmds (void) 113 { 114 abug_cmds.flags = MO_CLR_BREAK_USES_ADDR; 115 abug_cmds.init = abug_inits; /* Init strings */ 116 abug_cmds.cont = "g\r"; /* continue command */ 117 abug_cmds.step = "t\r"; /* single step */ 118 abug_cmds.stop = NULL; /* interrupt command */ 119 abug_cmds.set_break = "br %x\r"; /* set a breakpoint */ 120 abug_cmds.clr_break = "nobr %x\r"; /* clear a breakpoint */ 121 abug_cmds.clr_all_break = "nobr\r"; /* clear all breakpoints */ 122 abug_cmds.fill = "bf %x:%x %x;b\r"; /* fill (start count val) */ 123 abug_cmds.setmem.cmdb = "ms %x %02x\r"; /* setmem.cmdb (addr, value) */ 124 abug_cmds.setmem.cmdw = "ms %x %04x\r"; /* setmem.cmdw (addr, value) */ 125 abug_cmds.setmem.cmdl = "ms %x %08x\r"; /* setmem.cmdl (addr, value) */ 126 abug_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */ 127 abug_cmds.setmem.resp_delim = NULL; /* setreg.resp_delim */ 128 abug_cmds.setmem.term = NULL; /* setreg.term */ 129 abug_cmds.setmem.term_cmd = NULL; /* setreg.term_cmd */ 130 abug_cmds.getmem.cmdb = "md %x:%x;b\r"; /* getmem.cmdb (addr, len) */ 131 abug_cmds.getmem.cmdw = "md %x:%x;b\r"; /* getmem.cmdw (addr, len) */ 132 abug_cmds.getmem.cmdl = "md %x:%x;b\r"; /* getmem.cmdl (addr, len) */ 133 abug_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, len) */ 134 abug_cmds.getmem.resp_delim = " "; /* getmem.resp_delim */ 135 abug_cmds.getmem.term = NULL; /* getmem.term */ 136 abug_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */ 137 abug_cmds.setreg.cmd = "rm %s %x\r"; /* setreg.cmd (name, value) */ 138 abug_cmds.setreg.resp_delim = "="; /* setreg.resp_delim */ 139 abug_cmds.setreg.term = "? "; /* setreg.term */ 140 abug_cmds.setreg.term_cmd = ".\r"; /* setreg.term_cmd */ 141 abug_cmds.getreg.cmd = "rm %s\r"; /* getreg.cmd (name) */ 142 abug_cmds.getreg.resp_delim = "="; /* getreg.resp_delim */ 143 abug_cmds.getreg.term = "? "; /* getreg.term */ 144 abug_cmds.getreg.term_cmd = ".\r"; /* getreg.term_cmd */ 145 abug_cmds.dump_registers = "rd\r"; /* dump_registers */ 146 abug_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */ 147 abug_cmds.supply_register = abug_supply_register; 148 abug_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */ 149 abug_cmds.load = "lo 0\r"; /* download command */ 150 abug_cmds.loadresp = "\n"; /* load response */ 151 abug_cmds.prompt = "135Bug>"; /* monitor command prompt */ 152 abug_cmds.line_term = "\r"; /* end-of-line terminator */ 153 abug_cmds.cmd_end = NULL; /* optional command terminator */ 154 abug_cmds.target = &abug_ops; /* target operations */ 155 abug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ 156 abug_cmds.regnames = NULL; /* registers names */ 157 abug_cmds.regname = abug_regname; 158 abug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */ 159 }; 160 161 static void 162 abug_open (char *args, int from_tty) 163 { 164 monitor_open (args, &abug_cmds, from_tty); 165 } 166 167 extern initialize_file_ftype _initialize_abug_rom; /* -Wmissing-prototypes */ 168 169 void 170 _initialize_abug_rom (void) 171 { 172 init_abug_cmds (); 173 init_monitor_ops (&abug_ops); 174 175 abug_ops.to_shortname = "abug"; 176 abug_ops.to_longname = "ABug monitor"; 177 abug_ops.to_doc = "Debug via the ABug monitor.\n\ 178 Specify the serial device it is connected to (e.g. /dev/ttya)."; 179 abug_ops.to_open = abug_open; 180 181 add_target (&abug_ops); 182 } 183