| 1 | /* Remote debugging interface for PPCbug (PowerPC) Rom monitor |
| 2 | for GDB, the GNU debugger. |
| 3 | Copyright 1995 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, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "gdbcore.h" |
| 25 | #include "target.h" |
| 26 | #include "monitor.h" |
| 27 | #include "serial.h" |
| 28 | |
| 29 | static void ppcbug_open PARAMS ((char *args, int from_tty)); |
| 30 | |
| 31 | static void |
| 32 | ppcbug_supply_register (regname, regnamelen, val, vallen) |
| 33 | char *regname; |
| 34 | int regnamelen; |
| 35 | char *val; |
| 36 | int vallen; |
| 37 | { |
| 38 | int regno = 0, base = 0; |
| 39 | |
| 40 | if (regnamelen < 2 || regnamelen > 4) |
| 41 | return; |
| 42 | |
| 43 | switch (regname[0]) |
| 44 | { |
| 45 | case 'R': |
| 46 | if (regname[1] < '0' || regname[1] > '9') |
| 47 | return; |
| 48 | if (regnamelen == 2) |
| 49 | regno = regname[1] - '0'; |
| 50 | else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9') |
| 51 | regno = (regname[1] - '0') * 10 + (regname[2] - '0'); |
| 52 | else |
| 53 | return; |
| 54 | break; |
| 55 | case 'F': |
| 56 | if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9') |
| 57 | return; |
| 58 | if (regnamelen == 3) |
| 59 | regno = 32 + regname[2] - '0'; |
| 60 | else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9') |
| 61 | regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0'); |
| 62 | else |
| 63 | return; |
| 64 | break; |
| 65 | case 'I': |
| 66 | if (regnamelen != 2 || regname[1] != 'P') |
| 67 | return; |
| 68 | regno = 64; |
| 69 | break; |
| 70 | case 'M': |
| 71 | if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R') |
| 72 | return; |
| 73 | regno = 65; |
| 74 | break; |
| 75 | case 'C': |
| 76 | if (regnamelen != 2 || regname[1] != 'R') |
| 77 | return; |
| 78 | regno = 66; |
| 79 | break; |
| 80 | case 'S': |
| 81 | if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R') |
| 82 | return; |
| 83 | else if (regname[3] == '8') |
| 84 | regno = 67; |
| 85 | else if (regname[3] == '9') |
| 86 | regno = 68; |
| 87 | else if (regname[3] == '1') |
| 88 | regno = 69; |
| 89 | else if (regname[3] == '0') |
| 90 | regno = 70; |
| 91 | else |
| 92 | return; |
| 93 | break; |
| 94 | default: |
| 95 | return; |
| 96 | } |
| 97 | |
| 98 | monitor_supply_register (regno, val); |
| 99 | } |
| 100 | |
| 101 | /* |
| 102 | * This array of registers needs to match the indexes used by GDB. The |
| 103 | * whole reason this exists is because the various ROM monitors use |
| 104 | * different names than GDB does, and don't support all the |
| 105 | * registers either. So, typing "info reg sp" becomes an "A7". |
| 106 | */ |
| 107 | |
| 108 | static char *ppcbug_regnames[NUM_REGS] = |
| 109 | { |
| 110 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 111 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 112 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 113 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", |
| 114 | |
| 115 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", |
| 116 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", |
| 117 | "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", |
| 118 | "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", |
| 119 | |
| 120 | /* pc ps cnd lr cnt xer mq */ |
| 121 | "ip", "msr", "cr", "spr8", "spr9", "spr1", "spr0" |
| 122 | }; |
| 123 | |
| 124 | /* |
| 125 | * Define the monitor command strings. Since these are passed directly |
| 126 | * through to a printf style function, we need can include formatting |
| 127 | * strings. We also need a CR or LF on the end. |
| 128 | */ |
| 129 | |
| 130 | static struct target_ops ppcbug_ops0; |
| 131 | static struct target_ops ppcbug_ops1; |
| 132 | |
| 133 | static char *ppcbug_inits[] = {"\r", NULL}; |
| 134 | |
| 135 | #define PPC_CMDS(LOAD_CMD, OPS) \ |
| 136 | { \ |
| 137 | MO_CLR_BREAK_USES_ADDR | MO_HANDLE_NL, \ |
| 138 | ppcbug_inits, /* Init strings */ \ |
| 139 | "g\r", /* continue command */ \ |
| 140 | "t\r", /* single step */ \ |
| 141 | NULL, /* interrupt command */ \ |
| 142 | "br %x\r", /* set a breakpoint */ \ |
| 143 | "nobr %x\r", /* clear a breakpoint */ \ |
| 144 | "nobr\r", /* clear all breakpoints */ \ |
| 145 | "bf %x:%x %x;b\r", /* fill (start count val) */ \ |
| 146 | { \ |
| 147 | "ms %x %02x\r", /* setmem.cmdb (addr, value) */ \ |
| 148 | "ms %x %04x\r", /* setmem.cmdw (addr, value) */ \ |
| 149 | "ms %x %08x\r", /* setmem.cmdl (addr, value) */ \ |
| 150 | NULL, /* setmem.cmdll (addr, value) */ \ |
| 151 | NULL, /* setreg.resp_delim */ \ |
| 152 | NULL, /* setreg.term */ \ |
| 153 | NULL, /* setreg.term_cmd */ \ |
| 154 | }, \ |
| 155 | { \ |
| 156 | "md %x:%x;b\r", /* getmem.cmdb (addr, len) */ \ |
| 157 | "md %x:%x;b\r", /* getmem.cmdw (addr, len) */ \ |
| 158 | "md %x:%x;b\r", /* getmem.cmdl (addr, len) */ \ |
| 159 | NULL, /* getmem.cmdll (addr, len) */ \ |
| 160 | " ", /* getmem.resp_delim */ \ |
| 161 | NULL, /* getmem.term */ \ |
| 162 | NULL, /* getmem.term_cmd */ \ |
| 163 | }, \ |
| 164 | { \ |
| 165 | "rs %s %x\r", /* setreg.cmd (name, value) */ \ |
| 166 | NULL, /* setreg.resp_delim */ \ |
| 167 | NULL, /* setreg.term */ \ |
| 168 | NULL /* setreg.term_cmd */ \ |
| 169 | }, \ |
| 170 | { \ |
| 171 | "rs %s\r", /* getreg.cmd (name) */ \ |
| 172 | "=", /* getreg.resp_delim */ \ |
| 173 | NULL, /* getreg.term */ \ |
| 174 | NULL /* getreg.term_cmd */ \ |
| 175 | }, \ |
| 176 | "rd\r", /* dump_registers */ \ |
| 177 | "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)", /* register_pattern */ \ |
| 178 | ppcbug_supply_register, /* supply_register */ \ |
| 179 | NULL, /* load_routine (defaults to SRECs) */ \ |
| 180 | LOAD_CMD, /* download command */ \ |
| 181 | NULL, /* load response */ \ |
| 182 | "PPC1-Bug>", /* monitor command prompt */ \ |
| 183 | "\r", /* end-of-line terminator */ \ |
| 184 | NULL, /* optional command terminator */ \ |
| 185 | &OPS, /* target operations */ \ |
| 186 | SERIAL_1_STOPBITS, /* number of stop bits */ \ |
| 187 | ppcbug_regnames, /* registers names */ \ |
| 188 | MONITOR_OPS_MAGIC /* magic */ \ |
| 189 | } |
| 190 | |
| 191 | |
| 192 | static struct monitor_ops ppcbug_cmds0 = PPC_CMDS("lo 0\r", ppcbug_ops0); |
| 193 | static struct monitor_ops ppcbug_cmds1 = PPC_CMDS("lo 1\r", ppcbug_ops1); |
| 194 | |
| 195 | static void |
| 196 | ppcbug_open0(args, from_tty) |
| 197 | char *args; |
| 198 | int from_tty; |
| 199 | { |
| 200 | monitor_open (args, &ppcbug_cmds0, from_tty); |
| 201 | } |
| 202 | |
| 203 | static void |
| 204 | ppcbug_open1(args, from_tty) |
| 205 | char *args; |
| 206 | int from_tty; |
| 207 | { |
| 208 | monitor_open (args, &ppcbug_cmds1, from_tty); |
| 209 | } |
| 210 | |
| 211 | void |
| 212 | _initialize_ppcbug_rom () |
| 213 | { |
| 214 | init_monitor_ops (&ppcbug_ops0); |
| 215 | |
| 216 | ppcbug_ops0.to_shortname = "ppcbug"; |
| 217 | ppcbug_ops0.to_longname = "PowerPC PPCBug monitor on port 0"; |
| 218 | ppcbug_ops0.to_doc = "Debug via the PowerPC PPCBug monitor using port 0.\n\ |
| 219 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| 220 | ppcbug_ops0.to_open = ppcbug_open0; |
| 221 | |
| 222 | add_target (&ppcbug_ops0); |
| 223 | |
| 224 | init_monitor_ops (&ppcbug_ops1); |
| 225 | |
| 226 | ppcbug_ops1.to_shortname = "ppcbug1"; |
| 227 | ppcbug_ops1.to_longname = "PowerPC PPCBug monitor on port 1"; |
| 228 | ppcbug_ops1.to_doc = "Debug via the PowerPC PPCBug monitor using port 1.\n\ |
| 229 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| 230 | ppcbug_ops1.to_open = ppcbug_open1; |
| 231 | |
| 232 | add_target (&ppcbug_ops1); |
| 233 | } |