gdb/dink32-rom.c

   1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
   2    GDB, the GNU debugger.
   3    Copyright (C) 1997-2013 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "gdbcore.h"
  22 #include "target.h"
  23 #include "monitor.h"
  24 #include "serial.h"
  25 #include "symfile.h" /* For generic_load() */
  26 #include "inferior.h"
  27 #include "regcache.h"
  28
  29 static void dink32_open (char *args, int from_tty);
  30
  31 static void
  32 dink32_supply_register (struct regcache *regcache, char *regname,
  33                         int regnamelen, char *val, int vallen)
  34 {
  35   int regno = 0;
  36
  37   if (regnamelen < 2 || regnamelen > 4)
  38     return;
  39
  40   switch (regname[0])
  41     {
  42     case 'R':
  43       if (regname[1] < '0' || regname[1] > '9')
  44         return;
  45       if (regnamelen == 2)
  46         regno = regname[1] - '0';
  47       else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
  48         regno = (regname[1] - '0') * 10 + (regname[2] - '0');
  49       else
  50         return;
  51       break;
  52     case 'F':
  53       if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
  54         return;
  55       if (regnamelen == 3)
  56         regno = 32 + regname[2] - '0';
  57       else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
  58         regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
  59       else
  60         return;
  61       break;
  62     case 'I':
  63       if (regnamelen != 2 || regname[1] != 'P')
  64         return;
  65       regno = 64;
  66       break;
  67     case 'M':
  68       if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
  69         return;
  70       regno = 65;
  71       break;
  72     case 'C':
  73       if (regnamelen != 2 || regname[1] != 'R')
  74         return;
  75       regno = 66;
  76       break;
  77     case 'S':
  78       if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
  79         return;
  80       else if (regname[3] == '8')
  81         regno = 67;
  82       else if (regname[3] == '9')
  83         regno = 68;
  84       else if (regname[3] == '1')
  85         regno = 69;
  86       else if (regname[3] == '0')
  87         regno = 70;
  88       else
  89         return;
  90       break;
  91     default:
  92       return;
  93     }
  94
  95   monitor_supply_register (regcache, regno, val);
  96 }
  97
  98 /* This array of registers needs to match the indexes used by GDB.
  99    The whole reason this exists is because the various ROM monitors
 100    use different names than GDB does, and don't support all the
 101    registers either.  */
 102
 103 static char *dink32_regnames[] =
 104 {
 105   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 106   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 107   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 108   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
 109
 110   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 111   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 112   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 113   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 114
 115   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 116 };
 117
 118 static struct target_ops dink32_ops;
 119
 120 static char *dink32_inits[] =
 121 {"\r", NULL};
 122
 123 static struct monitor_ops dink32_cmds;
 124
 125 static void
 126 dink32_open (char *args, int from_tty)
 127 {
 128   monitor_open (args, &dink32_cmds, from_tty);
 129 }
 130
 131 extern initialize_file_ftype _initialize_dink32_rom; /* -Wmissing-prototypes */
 132
 133 void
 134 _initialize_dink32_rom (void)
 135 {
 136   dink32_cmds.flags = MO_HEX_PREFIX | MO_GETMEM_NEEDS_RANGE
 137     | MO_FILL_USES_ADDR | MO_HANDLE_NL | MO_32_REGS_PAIRED
 138     | MO_SETREG_INTERACTIVE | MO_SETMEM_INTERACTIVE
 139     | MO_GETMEM_16_BOUNDARY | MO_CLR_BREAK_1_BASED | MO_SREC_ACK
 140     | MO_SREC_ACK_ROTATE;
 141   dink32_cmds.init = dink32_inits;
 142   dink32_cmds.cont = "go +\r";
 143   dink32_cmds.step = "tr +\r";
 144   dink32_cmds.set_break = "bp 0x%x\r";
 145   dink32_cmds.clr_break = "bp %d\r";
 146 #if 0                   /* Would need to follow strict alignment rules..  */
 147   dink32_cmds.fill = "mf %x %x %x\r";
 148 #endif
 149   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 150   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 151   dink32_cmds.setmem.cmdl = "mm %x\r";
 152   dink32_cmds.setmem.term = " ?  ";
 153   dink32_cmds.getmem.cmdb = "md %x\r";
 154   dink32_cmds.getmem.resp_delim = "        ";
 155   dink32_cmds.setreg.cmd = "rm %s\r";
 156   dink32_cmds.setreg.term = " ?  ";
 157   dink32_cmds.getreg.cmd = "rd %s\r";
 158   dink32_cmds.getreg.resp_delim = ": ";
 159   dink32_cmds.dump_registers = "rd r\r";
 160   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 161   dink32_cmds.supply_register = dink32_supply_register;
 162   /* S-record download, via "keyboard port".  */
 163   dink32_cmds.load = "dl -k\r";
 164   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 165   dink32_cmds.prompt = "DINK32_603 >>";
 166   dink32_cmds.line_term = "\r";
 167   dink32_cmds.target = &dink32_ops;
 168   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 169   dink32_cmds.regnames = dink32_regnames;
 170   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 171
 172   init_monitor_ops (&dink32_ops);
 173
 174   dink32_ops.to_shortname = "dink32";
 175   dink32_ops.to_longname = "DINK32 monitor";
 176   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 177 Specify the serial device it is connected to (e.g. /dev/ttya).";
 178   dink32_ops.to_open = dink32_open;
 179
 180   add_target (&dink32_ops);
 181 }