1 /* Remote debugging interface for CPU32Bug Rom monitor for GDB, the GNU debugger. 2 Copyright 1995, 1996, 1998, 1999, 2000, 2001 3 Free Software Foundation, Inc. 4 5 Written by Stu Grossman 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 static void cpu32bug_open (char *args, int from_tty); 34 35 static void 36 cpu32bug_supply_register (char *regname, int regnamelen, char *val, int vallen) 37 { 38 int regno; 39 40 if (regnamelen != 2) 41 return; 42 43 switch (regname[0]) 44 { 45 case 'S': 46 if (regname[1] != 'R') 47 return; 48 regno = PS_REGNUM; 49 break; 50 case 'P': 51 if (regname[1] != 'C') 52 return; 53 regno = PC_REGNUM; 54 break; 55 case 'D': 56 if (regname[1] < '0' || regname[1] > '7') 57 return; 58 regno = regname[1] - '0' + M68K_D0_REGNUM; 59 break; 60 case 'A': 61 if (regname[1] < '0' || regname[1] > '7') 62 return; 63 regno = regname[1] - '0' + M68K_A0_REGNUM; 64 break; 65 default: 66 return; 67 } 68 69 monitor_supply_register (regno, val); 70 } 71 72 /* 73 * This array of registers needs to match the indexes used by GDB. The 74 * whole reason this exists is because the various ROM monitors use 75 * different names than GDB does, and don't support all the 76 * registers either. So, typing "info reg sp" becomes an "A7". 77 */ 78 79 static const char * 80 cpu32bug_regname (int index) 81 { 82 static char *regnames[] = 83 { 84 "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", 85 "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", 86 "SR", "PC" 87 }; 88 89 if ((index >= (sizeof (regnames) / sizeof (regnames[0]))) 90 || (index < 0) || (index >= NUM_REGS)) 91 return NULL; 92 else 93 return regnames[index]; 94 } 95 96 /* 97 * Define the monitor command strings. Since these are passed directly 98 * through to a printf style function, we need can include formatting 99 * strings. We also need a CR or LF on the end. 100 */ 101 102 static struct target_ops cpu32bug_ops; 103 104 static char *cpu32bug_inits[] = 105 {"\r", NULL}; 106 107 static struct monitor_ops cpu32bug_cmds; 108 109 static void 110 init_cpu32bug_cmds (void) 111 { 112 cpu32bug_cmds.flags = MO_CLR_BREAK_USES_ADDR; 113 cpu32bug_cmds.init = cpu32bug_inits; /* Init strings */ 114 cpu32bug_cmds.cont = "g\r"; /* continue command */ 115 cpu32bug_cmds.step = "t\r"; /* single step */ 116 cpu32bug_cmds.stop = NULL; /* interrupt command */ 117 cpu32bug_cmds.set_break = "br %x\r"; /* set a breakpoint */ 118 cpu32bug_cmds.clr_break = "nobr %x\r"; /* clear a breakpoint */ 119 cpu32bug_cmds.clr_all_break = "nobr\r"; /* clear all breakpoints */ 120 cpu32bug_cmds.fill = "bf %x:%x %x;b\r"; /* fill (start count val) */ 121 cpu32bug_cmds.setmem.cmdb = "ms %x %02x\r"; /* setmem.cmdb (addr, value) */ 122 cpu32bug_cmds.setmem.cmdw = "ms %x %04x\r"; /* setmem.cmdw (addr, value) */ 123 cpu32bug_cmds.setmem.cmdl = "ms %x %08x\r"; /* setmem.cmdl (addr, value) */ 124 cpu32bug_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */ 125 cpu32bug_cmds.setmem.resp_delim = NULL; /* setreg.resp_delim */ 126 cpu32bug_cmds.setmem.term = NULL; /* setreg.term */ 127 cpu32bug_cmds.setmem.term_cmd = NULL; /* setreg.term_cmd */ 128 cpu32bug_cmds.getmem.cmdb = "md %x:%x;b\r"; /* getmem.cmdb (addr, len) */ 129 cpu32bug_cmds.getmem.cmdw = "md %x:%x;b\r"; /* getmem.cmdw (addr, len) */ 130 cpu32bug_cmds.getmem.cmdl = "md %x:%x;b\r"; /* getmem.cmdl (addr, len) */ 131 cpu32bug_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, len) */ 132 cpu32bug_cmds.getmem.resp_delim = " "; /* getmem.resp_delim */ 133 cpu32bug_cmds.getmem.term = NULL; /* getmem.term */ 134 cpu32bug_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */ 135 cpu32bug_cmds.setreg.cmd = "rs %s %x\r"; /* setreg.cmd (name, value) */ 136 cpu32bug_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */ 137 cpu32bug_cmds.setreg.term = NULL; /* setreg.term */ 138 cpu32bug_cmds.setreg.term_cmd = NULL; /* setreg.term_cmd */ 139 cpu32bug_cmds.getreg.cmd = "rs %s\r"; /* getreg.cmd (name) */ 140 cpu32bug_cmds.getreg.resp_delim = "="; /* getreg.resp_delim */ 141 cpu32bug_cmds.getreg.term = NULL; /* getreg.term */ 142 cpu32bug_cmds.getreg.term_cmd = NULL; /* getreg.term_cmd */ 143 cpu32bug_cmds.dump_registers = "rd\r"; /* dump_registers */ 144 cpu32bug_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */ 145 cpu32bug_cmds.supply_register = cpu32bug_supply_register; 146 cpu32bug_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */ 147 cpu32bug_cmds.load = "lo\r"; /* download command */ 148 cpu32bug_cmds.loadresp = "\n"; /* load response */ 149 cpu32bug_cmds.prompt = "CPU32Bug>"; /* monitor command prompt */ 150 cpu32bug_cmds.line_term = "\r"; /* end-of-line terminator */ 151 cpu32bug_cmds.cmd_end = NULL; /* optional command terminator */ 152 cpu32bug_cmds.target = &cpu32bug_ops; /* target operations */ 153 cpu32bug_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ 154 cpu32bug_cmds.regnames = NULL; /* registers names */ 155 cpu32bug_cmds.regname = cpu32bug_regname; 156 cpu32bug_cmds.magic = MONITOR_OPS_MAGIC; /* magic */ 157 }; /* init_cpu32bug_cmds */ 158 159 static void 160 cpu32bug_open (char *args, int from_tty) 161 { 162 monitor_open (args, &cpu32bug_cmds, from_tty); 163 } 164 165 extern initialize_file_ftype _initialize_cpu32bug_rom; /* -Wmissing-prototypes */ 166 167 void 168 _initialize_cpu32bug_rom (void) 169 { 170 init_cpu32bug_cmds (); 171 init_monitor_ops (&cpu32bug_ops); 172 173 cpu32bug_ops.to_shortname = "cpu32bug"; 174 cpu32bug_ops.to_longname = "CPU32Bug monitor"; 175 cpu32bug_ops.to_doc = "Debug via the CPU32Bug monitor.\n\ 176 Specify the serial device it is connected to (e.g. /dev/ttya)."; 177 cpu32bug_ops.to_open = cpu32bug_open; 178 179 add_target (&cpu32bug_ops); 180 } 181