| 1 | /* Remote target glue for the ROM68K ROM monitor. |
| 2 | Copyright 1988, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "gdbcore.h" |
| 22 | #include "target.h" |
| 23 | #include "monitor.h" |
| 24 | #include "serial.h" |
| 25 | |
| 26 | static void rom68k_open PARAMS ((char *args, int from_tty)); |
| 27 | |
| 28 | static void |
| 29 | rom68k_supply_register (regname, regnamelen, val, vallen) |
| 30 | char *regname; |
| 31 | int regnamelen; |
| 32 | char *val; |
| 33 | int vallen; |
| 34 | { |
| 35 | int numregs; |
| 36 | int regno; |
| 37 | |
| 38 | numregs = 1; |
| 39 | regno = -1; |
| 40 | |
| 41 | if (regnamelen == 2) |
| 42 | switch (regname[0]) |
| 43 | { |
| 44 | case 'S': |
| 45 | if (regname[1] == 'R') |
| 46 | regno = PS_REGNUM; |
| 47 | break; |
| 48 | case 'P': |
| 49 | if (regname[1] == 'C') |
| 50 | regno = PC_REGNUM; |
| 51 | break; |
| 52 | case 'D': |
| 53 | if (regname[1] != 'R') |
| 54 | break; |
| 55 | regno = D0_REGNUM; |
| 56 | numregs = 8; |
| 57 | break; |
| 58 | case 'A': |
| 59 | if (regname[1] != 'R') |
| 60 | break; |
| 61 | regno = A0_REGNUM; |
| 62 | numregs = 7; |
| 63 | break; |
| 64 | } |
| 65 | else if (regnamelen == 3) |
| 66 | switch (regname[0]) |
| 67 | { |
| 68 | case 'I': |
| 69 | if (regname[1] == 'S' && regname[2] == 'P') |
| 70 | regno = SP_REGNUM; |
| 71 | } |
| 72 | |
| 73 | if (regno >= 0) |
| 74 | while (numregs-- > 0) |
| 75 | val = monitor_supply_register (regno++, val); |
| 76 | } |
| 77 | |
| 78 | /* This array of registers need to match the indexes used by GDB. |
| 79 | This exists because the various ROM monitors use different strings |
| 80 | than does GDB, and don't necessarily support all the registers |
| 81 | either. So, typing "info reg sp" becomes a "r30". */ |
| 82 | |
| 83 | static char *rom68k_regnames[NUM_REGS] = { |
| 84 | "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", |
| 85 | "A0", "A1", "A2", "A3", "A4", "A5", "A6", "ISP", |
| 86 | "SR", "PC" }; |
| 87 | |
| 88 | /* Define the monitor command strings. Since these are passed directly |
| 89 | through to a printf style function, we may include formatting |
| 90 | strings. We also need a CR or LF on the end. */ |
| 91 | |
| 92 | static struct target_ops rom68k_ops; |
| 93 | |
| 94 | static char *rom68k_inits[] = {".\r\r", NULL}; /* Exits pm/pr & download cmds */ |
| 95 | |
| 96 | static struct monitor_ops rom68k_cmds = |
| 97 | { |
| 98 | 0, /* flags */ |
| 99 | rom68k_inits, /* monitor init string */ |
| 100 | "go\r", /* continue command */ |
| 101 | "st\r", /* single step */ |
| 102 | NULL, /* No way to interrupt program */ |
| 103 | "db %x\r", /* set a breakpoint */ |
| 104 | "cb %x\r", /* clear a breakpoint */ |
| 105 | "cb *\r", /* clear all breakpoints */ |
| 106 | "fm %x %x %x\r", /* fill (start len val) */ |
| 107 | { |
| 108 | "pm %x %x\r", /* setmem.cmdb (addr, value) */ |
| 109 | "pm.w %x %x\r", /* setmem.cmdw (addr, value) */ |
| 110 | "pm.l %x %x\r", /* setmem.cmdl (addr, value) */ |
| 111 | NULL, /* setmem.cmdll (addr, value) */ |
| 112 | NULL, /* setreg.resp_delim */ |
| 113 | NULL, /* setreg.term */ |
| 114 | NULL, /* setreg.term_cmd */ |
| 115 | }, |
| 116 | { |
| 117 | "dm %x %x\r", /* getmem.cmdb (addr, len) */ |
| 118 | "dm.w %x %x\r", /* getmem.cmdw (addr, len) */ |
| 119 | "dm.l %x %x\r", /* getmem.cmdl (addr, len) */ |
| 120 | NULL, /* getmem.cmdll (addr, len) */ |
| 121 | " ", /* getmem.resp_delim */ |
| 122 | NULL, /* getmem.term */ |
| 123 | NULL, /* getmem.term_cmd */ |
| 124 | }, |
| 125 | { |
| 126 | "pr %s %x\r", /* setreg.cmd (name, value) */ |
| 127 | NULL, /* setreg.resp_delim */ |
| 128 | NULL, /* setreg.term */ |
| 129 | NULL /* setreg.term_cmd */ |
| 130 | }, |
| 131 | { |
| 132 | "pr %s\r", /* getreg.cmd (name) */ |
| 133 | ": ", /* getreg.resp_delim */ |
| 134 | "= ", /* getreg.term */ |
| 135 | ".\r" /* getreg.term_cmd */ |
| 136 | }, |
| 137 | "dr\r", /* dump_registers */ |
| 138 | /* register_pattern */ |
| 139 | "\\(\\w+\\)=\\([0-9a-fA-F]+\\( +[0-9a-fA-F]+\\b\\)*\\)", |
| 140 | rom68k_supply_register, /* supply_register */ |
| 141 | NULL, /* load_routine (defaults to SRECs) */ |
| 142 | "dc\r", /* download command */ |
| 143 | "Waiting for S-records from host... ", /* Load response */ |
| 144 | "ROM68K :-> ", /* monitor command prompt */ |
| 145 | "\r", /* end-of-line terminator */ |
| 146 | ".\r", /* optional command terminator */ |
| 147 | &rom68k_ops, /* target operations */ |
| 148 | SERIAL_1_STOPBITS, /* number of stop bits */ |
| 149 | rom68k_regnames, /* registers names */ |
| 150 | MONITOR_OPS_MAGIC /* magic */ |
| 151 | }; |
| 152 | |
| 153 | static void |
| 154 | rom68k_open (args, from_tty) |
| 155 | char *args; |
| 156 | int from_tty; |
| 157 | { |
| 158 | monitor_open (args, &rom68k_cmds, from_tty); |
| 159 | } |
| 160 | |
| 161 | void |
| 162 | _initialize_rom68k () |
| 163 | { |
| 164 | init_monitor_ops (&rom68k_ops); |
| 165 | |
| 166 | rom68k_ops.to_shortname = "rom68k"; |
| 167 | rom68k_ops.to_longname = "Rom68k debug monitor for the IDP Eval board"; |
| 168 | rom68k_ops.to_doc = "Debug on a Motorola IDP eval board running the ROM68K monitor.\n\ |
| 169 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| 170 | rom68k_ops.to_open = rom68k_open; |
| 171 | |
| 172 | add_target (&rom68k_ops); |
| 173 | } |