gdb/dink32-rom.c

   1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
   2    GDB, the GNU debugger.
   3    Copyright (C) 1997-2014 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
  30 dink32_supply_register (struct regcache *regcache, char *regname,
  31                         int regnamelen, char *val, int vallen)
  32 {
  33   int regno = 0;
  34
  35   if (regnamelen < 2 || regnamelen > 4)
  36     return;
  37
  38   switch (regname[0])
  39     {
  40     case 'R':
  41       if (regname[1] < '0' || regname[1] > '9')
  42         return;
  43       if (regnamelen == 2)
  44         regno = regname[1] - '0';
  45       else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
  46         regno = (regname[1] - '0') * 10 + (regname[2] - '0');
  47       else
  48         return;
  49       break;
  50     case 'F':
  51       if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
  52         return;
  53       if (regnamelen == 3)
  54         regno = 32 + regname[2] - '0';
  55       else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
  56         regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
  57       else
  58         return;
  59       break;
  60     case 'I':
  61       if (regnamelen != 2 || regname[1] != 'P')
  62         return;
  63       regno = 64;
  64       break;
  65     case 'M':
  66       if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
  67         return;
  68       regno = 65;
  69       break;
  70     case 'C':
  71       if (regnamelen != 2 || regname[1] != 'R')
  72         return;
  73       regno = 66;
  74       break;
  75     case 'S':
  76       if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
  77         return;
  78       else if (regname[3] == '8')
  79         regno = 67;
  80       else if (regname[3] == '9')
  81         regno = 68;
  82       else if (regname[3] == '1')
  83         regno = 69;
  84       else if (regname[3] == '0')
  85         regno = 70;
  86       else
  87         return;
  88       break;
  89     default:
  90       return;
  91     }
  92
  93   monitor_supply_register (regcache, regno, val);
  94 }
  95
  96 /* This array of registers needs to match the indexes used by GDB.
  97    The whole reason this exists is because the various ROM monitors
  98    use different names than GDB does, and don't support all the
  99    registers either.  */
 100
 101 static char *dink32_regnames[] =
 102 {
 103   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 104   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 105   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 106   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
 107
 108   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 109   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 110   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 111   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 112
 113   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 114 };
 115
 116 static struct target_ops dink32_ops;
 117
 118 static char *dink32_inits[] =
 119 {"\r", NULL};
 120
 121 static struct monitor_ops dink32_cmds;
 122
 123 static void
 124 dink32_open (const char *args, int from_tty)
 125 {
 126   monitor_open (args, &dink32_cmds, from_tty);
 127 }
 128
 129 extern initialize_file_ftype _initialize_dink32_rom; /* -Wmissing-prototypes */
 130
 131 void
 132 _initialize_dink32_rom (void)
 133 {
 134   dink32_cmds.flags = MO_HEX_PREFIX | MO_GETMEM_NEEDS_RANGE
 135     | MO_FILL_USES_ADDR | MO_HANDLE_NL | MO_32_REGS_PAIRED
 136     | MO_SETREG_INTERACTIVE | MO_SETMEM_INTERACTIVE
 137     | MO_GETMEM_16_BOUNDARY | MO_CLR_BREAK_1_BASED | MO_SREC_ACK
 138     | MO_SREC_ACK_ROTATE;
 139   dink32_cmds.init = dink32_inits;
 140   dink32_cmds.cont = "go +\r";
 141   dink32_cmds.step = "tr +\r";
 142   dink32_cmds.set_break = "bp 0x%x\r";
 143   dink32_cmds.clr_break = "bp %d\r";
 144 #if 0                   /* Would need to follow strict alignment rules..  */
 145   dink32_cmds.fill = "mf %x %x %x\r";
 146 #endif
 147   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 148   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 149   dink32_cmds.setmem.cmdl = "mm %x\r";
 150   dink32_cmds.setmem.term = " ?  ";
 151   dink32_cmds.getmem.cmdb = "md %x\r";
 152   dink32_cmds.getmem.resp_delim = "        ";
 153   dink32_cmds.setreg.cmd = "rm %s\r";
 154   dink32_cmds.setreg.term = " ?  ";
 155   dink32_cmds.getreg.cmd = "rd %s\r";
 156   dink32_cmds.getreg.resp_delim = ": ";
 157   dink32_cmds.dump_registers = "rd r\r";
 158   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 159   dink32_cmds.supply_register = dink32_supply_register;
 160   /* S-record download, via "keyboard port".  */
 161   dink32_cmds.load = "dl -k\r";
 162   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 163   dink32_cmds.prompt = "DINK32_603 >>";
 164   dink32_cmds.line_term = "\r";
 165   dink32_cmds.target = &dink32_ops;
 166   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 167   dink32_cmds.regnames = dink32_regnames;
 168   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 169
 170   init_monitor_ops (&dink32_ops);
 171
 172   dink32_ops.to_shortname = "dink32";
 173   dink32_ops.to_longname = "DINK32 monitor";
 174   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 175 Specify the serial device it is connected to (e.g. /dev/ttya).";
 176   dink32_ops.to_open = dink32_open;
 177
 178   add_target (&dink32_ops);
 179 }