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 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 2 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, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #include "defs.h"
  23 #include "gdbcore.h"
  24 #include "target.h"
  25 #include "monitor.h"
  26 #include "serial.h"
  27 #include "symfile.h" /* For generic_load() */
  28 #include "inferior.h" /* For write_pc() */
  29 #include "regcache.h"
  30
  31 static void dink32_open (char *args, int from_tty);
  32
  33 static void
  34 dink32_supply_register (char *regname, 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 (regno, val);
  97 }
  98
  99 /* This array of registers needs to match the indexes used by GDB. The
 100    whole reason this exists is because the various ROM monitors use
 101    different names than GDB does, and don't support all the registers
 102    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 | MO_FILL_USES_ADDR | MO_HANDLE_NL | MO_32_REGS_PAIRED | MO_SETREG_INTERACTIVE | MO_SETMEM_INTERACTIVE | MO_GETMEM_16_BOUNDARY | MO_CLR_BREAK_1_BASED | MO_SREC_ACK | MO_SREC_ACK_ROTATE;
 138   dink32_cmds.init = dink32_inits;
 139   dink32_cmds.cont = "go +\r";
 140   dink32_cmds.step = "tr +\r";
 141   dink32_cmds.set_break = "bp 0x%x\r";
 142   dink32_cmds.clr_break = "bp %d\r";
 143 #if 0                           /* Would need to follow strict alignment rules.. */
 144   dink32_cmds.fill = "mf %x %x %x\r";
 145 #endif
 146   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 147   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 148   dink32_cmds.setmem.cmdl = "mm %x\r";
 149   dink32_cmds.setmem.term = " ?  ";
 150   dink32_cmds.getmem.cmdb = "md %x\r";
 151   dink32_cmds.getmem.resp_delim = "        ";
 152   dink32_cmds.setreg.cmd = "rm %s\r";
 153   dink32_cmds.setreg.term = " ?  ";
 154   dink32_cmds.getreg.cmd = "rd %s\r";
 155   dink32_cmds.getreg.resp_delim = ": ";
 156   dink32_cmds.dump_registers = "rd r\r";
 157   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 158   dink32_cmds.supply_register = dink32_supply_register;
 159   /* S-record download, via "keyboard port".  */
 160   dink32_cmds.load = "dl -k\r";
 161   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 162   dink32_cmds.prompt = "DINK32_603 >>";
 163   dink32_cmds.line_term = "\r";
 164   dink32_cmds.target = &dink32_ops;
 165   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 166   dink32_cmds.regnames = dink32_regnames;
 167   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 168
 169   init_monitor_ops (&dink32_ops);
 170
 171   dink32_ops.to_shortname = "dink32";
 172   dink32_ops.to_longname = "DINK32 monitor";
 173   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 174 Specify the serial device it is connected to (e.g. /dev/ttya).";
 175   dink32_ops.to_open = dink32_open;
 176
 177   add_target (&dink32_ops);
 178 }