| 1 | /* Remote debugging interface for PPCbug (PowerPC) Rom monitor |
| 2 | for GDB, the GNU debugger. |
| 3 | Copyright 1995, 1998, 1999, 2000, 2001 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 | static void |
| 32 | ppcbug_supply_register (char *regname, int regnamelen, char *val, int vallen) |
| 33 | { |
| 34 | int regno = 0; |
| 35 | |
| 36 | if (regnamelen < 2 || regnamelen > 4) |
| 37 | return; |
| 38 | |
| 39 | switch (regname[0]) |
| 40 | { |
| 41 | case 'R': |
| 42 | if (regname[1] < '0' || regname[1] > '9') |
| 43 | return; |
| 44 | if (regnamelen == 2) |
| 45 | regno = regname[1] - '0'; |
| 46 | else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9') |
| 47 | regno = (regname[1] - '0') * 10 + (regname[2] - '0'); |
| 48 | else |
| 49 | return; |
| 50 | break; |
| 51 | case 'F': |
| 52 | if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9') |
| 53 | return; |
| 54 | if (regnamelen == 3) |
| 55 | regno = 32 + regname[2] - '0'; |
| 56 | else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9') |
| 57 | regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0'); |
| 58 | else |
| 59 | return; |
| 60 | break; |
| 61 | case 'I': |
| 62 | if (regnamelen != 2 || regname[1] != 'P') |
| 63 | return; |
| 64 | regno = 64; |
| 65 | break; |
| 66 | case 'M': |
| 67 | if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R') |
| 68 | return; |
| 69 | regno = 65; |
| 70 | break; |
| 71 | case 'C': |
| 72 | if (regnamelen != 2 || regname[1] != 'R') |
| 73 | return; |
| 74 | regno = 66; |
| 75 | break; |
| 76 | case 'S': |
| 77 | if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R') |
| 78 | return; |
| 79 | else if (regname[3] == '8') |
| 80 | regno = 67; |
| 81 | else if (regname[3] == '9') |
| 82 | regno = 68; |
| 83 | else if (regname[3] == '1') |
| 84 | regno = 69; |
| 85 | else if (regname[3] == '0') |
| 86 | regno = 70; |
| 87 | else |
| 88 | return; |
| 89 | break; |
| 90 | default: |
| 91 | return; |
| 92 | } |
| 93 | |
| 94 | monitor_supply_register (regno, val); |
| 95 | } |
| 96 | |
| 97 | /* |
| 98 | * This array of registers needs to match the indexes used by GDB. The |
| 99 | * whole reason this exists is because the various ROM monitors use |
| 100 | * different names than GDB does, and don't support all the |
| 101 | * registers either. So, typing "info reg sp" becomes an "A7". |
| 102 | */ |
| 103 | |
| 104 | static char *ppcbug_regnames[] = |
| 105 | { |
| 106 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 107 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 108 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 109 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", |
| 110 | |
| 111 | "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", |
| 112 | "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", |
| 113 | "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", |
| 114 | "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", |
| 115 | |
| 116 | /* pc ps cnd lr cnt xer mq */ |
| 117 | "ip", "msr", "cr", "spr8", "spr9", "spr1", "spr0" |
| 118 | }; |
| 119 | |
| 120 | /* |
| 121 | * Define the monitor command strings. Since these are passed directly |
| 122 | * through to a printf style function, we need can include formatting |
| 123 | * strings. We also need a CR or LF on the end. |
| 124 | */ |
| 125 | |
| 126 | static struct target_ops ppcbug_ops0; |
| 127 | static struct target_ops ppcbug_ops1; |
| 128 | |
| 129 | static char *ppcbug_inits[] = |
| 130 | {"\r", NULL}; |
| 131 | |
| 132 | static void |
| 133 | init_ppc_cmds (char *LOAD_CMD, |
| 134 | struct monitor_ops *OPS, |
| 135 | struct target_ops *targops) |
| 136 | { |
| 137 | OPS->flags = MO_CLR_BREAK_USES_ADDR | MO_HANDLE_NL; |
| 138 | OPS->init = ppcbug_inits; /* Init strings */ |
| 139 | OPS->cont = "g\r"; /* continue command */ |
| 140 | OPS->step = "t\r"; /* single step */ |
| 141 | OPS->stop = NULL; /* interrupt command */ |
| 142 | OPS->set_break = "br %x\r"; /* set a breakpoint */ |
| 143 | OPS->clr_break = "nobr %x\r"; /* clear a breakpoint */ |
| 144 | OPS->clr_all_break = "nobr\r"; /* clear all breakpoints */ |
| 145 | OPS->fill = "bf %x:%x %x;b\r"; /* fill (start count val) */ |
| 146 | OPS->setmem.cmdb = "ms %x %02x\r"; /* setmem.cmdb (addr, value) */ |
| 147 | OPS->setmem.cmdw = "ms %x %04x\r"; /* setmem.cmdw (addr, value) */ |
| 148 | OPS->setmem.cmdl = "ms %x %08x\r"; /* setmem.cmdl (addr, value) */ |
| 149 | OPS->setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */ |
| 150 | OPS->setmem.resp_delim = NULL; /* setreg.resp_delim */ |
| 151 | OPS->setmem.term = NULL; /* setreg.term */ |
| 152 | OPS->setmem.term_cmd = NULL; /* setreg.term_cmd */ |
| 153 | OPS->getmem.cmdb = "md %x:%x;b\r"; /* getmem.cmdb (addr, len) */ |
| 154 | OPS->getmem.cmdw = "md %x:%x;b\r"; /* getmem.cmdw (addr, len) */ |
| 155 | OPS->getmem.cmdl = "md %x:%x;b\r"; /* getmem.cmdl (addr, len) */ |
| 156 | OPS->getmem.cmdll = NULL; /* getmem.cmdll (addr, len) */ |
| 157 | OPS->getmem.resp_delim = " "; /* getmem.resp_delim */ |
| 158 | OPS->getmem.term = NULL; /* getmem.term */ |
| 159 | OPS->getmem.term_cmd = NULL; /* getmem.term_cmd */ |
| 160 | OPS->setreg.cmd = "rs %s %x\r"; /* setreg.cmd (name, value) */ |
| 161 | OPS->setreg.resp_delim = NULL; /* setreg.resp_delim */ |
| 162 | OPS->setreg.term = NULL; /* setreg.term */ |
| 163 | OPS->setreg.term_cmd = NULL; /* setreg.term_cmd */ |
| 164 | OPS->getreg.cmd = "rs %s\r"; /* getreg.cmd (name) */ |
| 165 | OPS->getreg.resp_delim = "="; /* getreg.resp_delim */ |
| 166 | OPS->getreg.term = NULL; /* getreg.term */ |
| 167 | OPS->getreg.term_cmd = NULL; /* getreg.term_cmd */ |
| 168 | OPS->register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */ |
| 169 | OPS->supply_register = ppcbug_supply_register; |
| 170 | OPS->dump_registers = "rd\r"; /* dump all registers */ |
| 171 | OPS->load_routine = NULL; /* load_routine (defaults to SRECs) */ |
| 172 | OPS->load = LOAD_CMD; /* download command */ |
| 173 | OPS->loadresp = NULL; /* load response */ |
| 174 | OPS->prompt = "PPC1-Bug>"; /* monitor command prompt */ |
| 175 | OPS->line_term = "\r"; /* end-of-line terminator */ |
| 176 | OPS->cmd_end = NULL; /* optional command terminator */ |
| 177 | OPS->target = targops; /* target operations */ |
| 178 | OPS->stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ |
| 179 | OPS->regnames = ppcbug_regnames; /* registers names */ |
| 180 | OPS->magic = MONITOR_OPS_MAGIC; /* magic */ |
| 181 | } |
| 182 | |
| 183 | |
| 184 | static struct monitor_ops ppcbug_cmds0; |
| 185 | static struct monitor_ops ppcbug_cmds1; |
| 186 | |
| 187 | static void |
| 188 | ppcbug_open0 (char *args, int from_tty) |
| 189 | { |
| 190 | monitor_open (args, &ppcbug_cmds0, from_tty); |
| 191 | } |
| 192 | |
| 193 | static void |
| 194 | ppcbug_open1 (char *args, int from_tty) |
| 195 | { |
| 196 | monitor_open (args, &ppcbug_cmds1, from_tty); |
| 197 | } |
| 198 | |
| 199 | extern initialize_file_ftype _initialize_ppcbug_rom; /* -Wmissing-prototypes */ |
| 200 | |
| 201 | void |
| 202 | _initialize_ppcbug_rom (void) |
| 203 | { |
| 204 | init_ppc_cmds ("lo 0\r", &ppcbug_cmds0, &ppcbug_ops0); |
| 205 | init_ppc_cmds ("lo 1\r", &ppcbug_cmds1, &ppcbug_ops1); |
| 206 | init_monitor_ops (&ppcbug_ops0); |
| 207 | |
| 208 | ppcbug_ops0.to_shortname = "ppcbug"; |
| 209 | ppcbug_ops0.to_longname = "PowerPC PPCBug monitor on port 0"; |
| 210 | ppcbug_ops0.to_doc = "Debug via the PowerPC PPCBug monitor using port 0.\n\ |
| 211 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| 212 | ppcbug_ops0.to_open = ppcbug_open0; |
| 213 | |
| 214 | add_target (&ppcbug_ops0); |
| 215 | |
| 216 | init_monitor_ops (&ppcbug_ops1); |
| 217 | |
| 218 | ppcbug_ops1.to_shortname = "ppcbug1"; |
| 219 | ppcbug_ops1.to_longname = "PowerPC PPCBug monitor on port 1"; |
| 220 | ppcbug_ops1.to_doc = "Debug via the PowerPC PPCBug monitor using port 1.\n\ |
| 221 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| 222 | ppcbug_ops1.to_open = ppcbug_open1; |
| 223 | |
| 224 | add_target (&ppcbug_ops1); |
| 225 | } |