| 1 | /* Remote debugging interface for CPU32Bug Rom monitor for GDB, the GNU debugger. |
| 2 | Copyright 1995 Free Software Foundation, Inc. |
| 3 | |
| 4 | Written by Stu Grossman of Cygnus Support |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "gdbcore.h" |
| 24 | #include "target.h" |
| 25 | #include "monitor.h" |
| 26 | #include "serial.h" |
| 27 | |
| 28 | static void cpu32bug_open PARAMS ((char *args, int from_tty)); |
| 29 | |
| 30 | static void |
| 31 | cpu32bug_supply_register (regname, regnamelen, val, vallen) |
| 32 | char *regname; |
| 33 | int regnamelen; |
| 34 | char *val; |
| 35 | int vallen; |
| 36 | { |
| 37 | int regno; |
| 38 | |
| 39 | if (regnamelen != 2) |
| 40 | return; |
| 41 | |
| 42 | switch (regname[0]) |
| 43 | { |
| 44 | case 'S': |
| 45 | if (regname[1] != 'R') |
| 46 | return; |
| 47 | regno = PS_REGNUM; |
| 48 | break; |
| 49 | case 'P': |
| 50 | if (regname[1] != 'C') |
| 51 | return; |
| 52 | regno = PC_REGNUM; |
| 53 | break; |
| 54 | case 'D': |
| 55 | if (regname[1] < '0' || regname[1] > '7') |
| 56 | return; |
| 57 | regno = regname[1] - '0' + D0_REGNUM; |
| 58 | break; |
| 59 | case 'A': |
| 60 | if (regname[1] < '0' || regname[1] > '7') |
| 61 | return; |
| 62 | regno = regname[1] - '0' + A0_REGNUM; |
| 63 | break; |
| 64 | default: |
| 65 | return; |
| 66 | } |
| 67 | |
| 68 | monitor_supply_register (regno, val); |
| 69 | } |
| 70 | |
| 71 | /* |
| 72 | * This array of registers needs to match the indexes used by GDB. The |
| 73 | * whole reason this exists is because the various ROM monitors use |
| 74 | * different names than GDB does, and don't support all the |
| 75 | * registers either. So, typing "info reg sp" becomes an "A7". |
| 76 | */ |
| 77 | |
| 78 | static char *cpu32bug_regnames[NUM_REGS] = |
| 79 | { |
| 80 | "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", |
| 81 | "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", |
| 82 | "SR", "PC", |
| 83 | }; |
| 84 | |
| 85 | /* |
| 86 | * Define the monitor command strings. Since these are passed directly |
| 87 | * through to a printf style function, we need can include formatting |
| 88 | * strings. We also need a CR or LF on the end. |
| 89 | */ |
| 90 | |
| 91 | static struct target_ops cpu32bug_ops; |
| 92 | |
| 93 | static char *cpu32bug_inits[] = {"\r", NULL}; |
| 94 | |
| 95 | static struct monitor_ops cpu32bug_cmds = |
| 96 | { |
| 97 | MO_CLR_BREAK_USES_ADDR, |
| 98 | cpu32bug_inits, /* Init strings */ |
| 99 | "g\r", /* continue command */ |
| 100 | "t\r", /* single step */ |
| 101 | NULL, /* interrupt command */ |
| 102 | "br %x\r", /* set a breakpoint */ |
| 103 | "nobr %x\r", /* clear a breakpoint */ |
| 104 | "nobr\r", /* clear all breakpoints */ |
| 105 | "bf %x:%x %x;b\r", /* fill (start count val) */ |
| 106 | { |
| 107 | "ms %x %02x\r", /* setmem.cmdb (addr, value) */ |
| 108 | "ms %x %04x\r", /* setmem.cmdw (addr, value) */ |
| 109 | "ms %x %08x\r", /* setmem.cmdl (addr, value) */ |
| 110 | NULL, /* setmem.cmdll (addr, value) */ |
| 111 | NULL, /* setreg.resp_delim */ |
| 112 | NULL, /* setreg.term */ |
| 113 | NULL, /* setreg.term_cmd */ |
| 114 | }, |
| 115 | { |
| 116 | "md %x:%x;b\r", /* getmem.cmdb (addr, len) */ |
| 117 | "md %x:%x;b\r", /* getmem.cmdw (addr, len) */ |
| 118 | "md %x:%x;b\r", /* getmem.cmdl (addr, len) */ |
| 119 | NULL, /* getmem.cmdll (addr, len) */ |
| 120 | " ", /* getmem.resp_delim */ |
| 121 | NULL, /* getmem.term */ |
| 122 | NULL, /* getmem.term_cmd */ |
| 123 | }, |
| 124 | { |
| 125 | "rs %s %x\r", /* setreg.cmd (name, value) */ |
| 126 | NULL, /* setreg.resp_delim */ |
| 127 | NULL, /* setreg.term */ |
| 128 | NULL /* setreg.term_cmd */ |
| 129 | }, |
| 130 | { |
| 131 | "rs %s\r", /* getreg.cmd (name) */ |
| 132 | "=", /* getreg.resp_delim */ |
| 133 | NULL, /* getreg.term */ |
| 134 | NULL /* getreg.term_cmd */ |
| 135 | }, |
| 136 | "rd\r", /* dump_registers */ |
| 137 | "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)", /* register_pattern */ |
| 138 | cpu32bug_supply_register, /* supply_register */ |
| 139 | NULL, /* load_routine (defaults to SRECs) */ |
| 140 | "lo\r", /* download command */ |
| 141 | "lo\r\n", /* load response */ |
| 142 | "CPU32Bug>", /* monitor command prompt */ |
| 143 | NULL, /* end-of-command delimitor */ |
| 144 | NULL, /* optional command terminator */ |
| 145 | &cpu32bug_ops, /* target operations */ |
| 146 | SERIAL_1_STOPBITS, /* number of stop bits */ |
| 147 | cpu32bug_regnames, /* registers names */ |
| 148 | MONITOR_OPS_MAGIC /* magic */ |
| 149 | }; |
| 150 | |
| 151 | void |
| 152 | cpu32bug_open(args, from_tty) |
| 153 | char *args; |
| 154 | int from_tty; |
| 155 | { |
| 156 | monitor_open (args, &cpu32bug_cmds, from_tty); |
| 157 | } |
| 158 | |
| 159 | void |
| 160 | _initialize_cpu32bug_rom () |
| 161 | { |
| 162 | init_monitor_ops (&cpu32bug_ops); |
| 163 | |
| 164 | cpu32bug_ops.to_shortname = "cpu32bug"; |
| 165 | cpu32bug_ops.to_longname = "CPU32Bug monitor"; |
| 166 | cpu32bug_ops.to_doc = "Debug via the CPU32Bug monitor.\n\ |
| 167 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| 168 | cpu32bug_ops.to_open = cpu32bug_open; |
| 169 | |
| 170 | add_target (&cpu32bug_ops); |
| 171 | } |