gdb/dink32-rom.c

   1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
   2    GDB, the GNU debugger.
   3    Copyright (C) 1997, 1999, 2000, 2001, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   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 3 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, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include "defs.h"
  22 #include "gdbcore.h"
  23 #include "target.h"
  24 #include "monitor.h"
  25 #include "serial.h"
  26 #include "symfile.h" /* For generic_load() */
  27 #include "inferior.h"
  28 #include "regcache.h"
  29
  30 static void dink32_open (char *args, int from_tty);
  31
  32 static void
  33 dink32_supply_register (struct regcache *regcache, char *regname,
  34                         int regnamelen, char *val, int vallen)
  35 {
  36   int regno = 0;
  37
  38   if (regnamelen < 2 || regnamelen > 4)
  39     return;
  40
  41   switch (regname[0])
  42     {
  43     case 'R':
  44       if (regname[1] < '0' || regname[1] > '9')
  45         return;
  46       if (regnamelen == 2)
  47         regno = regname[1] - '0';
  48       else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
  49         regno = (regname[1] - '0') * 10 + (regname[2] - '0');
  50       else
  51         return;
  52       break;
  53     case 'F':
  54       if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
  55         return;
  56       if (regnamelen == 3)
  57         regno = 32 + regname[2] - '0';
  58       else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
  59         regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
  60       else
  61         return;
  62       break;
  63     case 'I':
  64       if (regnamelen != 2 || regname[1] != 'P')
  65         return;
  66       regno = 64;
  67       break;
  68     case 'M':
  69       if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
  70         return;
  71       regno = 65;
  72       break;
  73     case 'C':
  74       if (regnamelen != 2 || regname[1] != 'R')
  75         return;
  76       regno = 66;
  77       break;
  78     case 'S':
  79       if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
  80         return;
  81       else if (regname[3] == '8')
  82         regno = 67;
  83       else if (regname[3] == '9')
  84         regno = 68;
  85       else if (regname[3] == '1')
  86         regno = 69;
  87       else if (regname[3] == '0')
  88         regno = 70;
  89       else
  90         return;
  91       break;
  92     default:
  93       return;
  94     }
  95
  96   monitor_supply_register (regcache, regno, val);
  97 }
  98
  99 /* This array of registers needs to match the indexes used by GDB.
 100    The whole reason this exists is because the various ROM monitors
 101    use different names than GDB does, and don't support all the
 102    registers either.  */
 103
 104 static char *dink32_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   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 112   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 113   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 114   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 115
 116   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 117 };
 118
 119 static struct target_ops dink32_ops;
 120
 121 static char *dink32_inits[] =
 122 {"\r", NULL};
 123
 124 static struct monitor_ops dink32_cmds;
 125
 126 static void
 127 dink32_open (char *args, int from_tty)
 128 {
 129   monitor_open (args, &dink32_cmds, from_tty);
 130 }
 131
 132 extern initialize_file_ftype _initialize_dink32_rom; /* -Wmissing-prototypes */
 133
 134 void
 135 _initialize_dink32_rom (void)
 136 {
 137   dink32_cmds.flags = MO_HEX_PREFIX | MO_GETMEM_NEEDS_RANGE
 138     | MO_FILL_USES_ADDR | MO_HANDLE_NL | MO_32_REGS_PAIRED
 139     | MO_SETREG_INTERACTIVE | MO_SETMEM_INTERACTIVE
 140     | MO_GETMEM_16_BOUNDARY | MO_CLR_BREAK_1_BASED | MO_SREC_ACK
 141     | MO_SREC_ACK_ROTATE;
 142   dink32_cmds.init = dink32_inits;
 143   dink32_cmds.cont = "go +\r";
 144   dink32_cmds.step = "tr +\r";
 145   dink32_cmds.set_break = "bp 0x%x\r";
 146   dink32_cmds.clr_break = "bp %d\r";
 147 #if 0                   /* Would need to follow strict alignment rules..  */
 148   dink32_cmds.fill = "mf %x %x %x\r";
 149 #endif
 150   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 151   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 152   dink32_cmds.setmem.cmdl = "mm %x\r";
 153   dink32_cmds.setmem.term = " ?  ";
 154   dink32_cmds.getmem.cmdb = "md %x\r";
 155   dink32_cmds.getmem.resp_delim = "        ";
 156   dink32_cmds.setreg.cmd = "rm %s\r";
 157   dink32_cmds.setreg.term = " ?  ";
 158   dink32_cmds.getreg.cmd = "rd %s\r";
 159   dink32_cmds.getreg.resp_delim = ": ";
 160   dink32_cmds.dump_registers = "rd r\r";
 161   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 162   dink32_cmds.supply_register = dink32_supply_register;
 163   /* S-record download, via "keyboard port".  */
 164   dink32_cmds.load = "dl -k\r";
 165   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 166   dink32_cmds.prompt = "DINK32_603 >>";
 167   dink32_cmds.line_term = "\r";
 168   dink32_cmds.target = &dink32_ops;
 169   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 170   dink32_cmds.regnames = dink32_regnames;
 171   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 172
 173   init_monitor_ops (&dink32_ops);
 174
 175   dink32_ops.to_shortname = "dink32";
 176   dink32_ops.to_longname = "DINK32 monitor";
 177   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 178 Specify the serial device it is connected to (e.g. /dev/ttya).";
 179   dink32_ops.to_open = dink32_open;
 180
 181   add_target (&dink32_ops);
 182 }