gdb/dink32-rom.c

   1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
   2    GDB, the GNU debugger.
   3    Copyright 1997 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., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, 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
  30 static void dink32_open (char *args, int from_tty);
  31
  32 static void
  33 dink32_supply_register (regname, regnamelen, val, vallen)
  34      char *regname;
  35      int regnamelen;
  36      char *val;
  37      int vallen;
  38 {
  39   int regno = 0;
  40
  41   if (regnamelen < 2 || regnamelen > 4)
  42     return;
  43
  44   switch (regname[0])
  45     {
  46     case 'R':
  47       if (regname[1] < '0' || regname[1] > '9')
  48         return;
  49       if (regnamelen == 2)
  50         regno = regname[1] - '0';
  51       else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
  52         regno = (regname[1] - '0') * 10 + (regname[2] - '0');
  53       else
  54         return;
  55       break;
  56     case 'F':
  57       if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
  58         return;
  59       if (regnamelen == 3)
  60         regno = 32 + regname[2] - '0';
  61       else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
  62         regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
  63       else
  64         return;
  65       break;
  66     case 'I':
  67       if (regnamelen != 2 || regname[1] != 'P')
  68         return;
  69       regno = 64;
  70       break;
  71     case 'M':
  72       if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
  73         return;
  74       regno = 65;
  75       break;
  76     case 'C':
  77       if (regnamelen != 2 || regname[1] != 'R')
  78         return;
  79       regno = 66;
  80       break;
  81     case 'S':
  82       if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
  83         return;
  84       else if (regname[3] == '8')
  85         regno = 67;
  86       else if (regname[3] == '9')
  87         regno = 68;
  88       else if (regname[3] == '1')
  89         regno = 69;
  90       else if (regname[3] == '0')
  91         regno = 70;
  92       else
  93         return;
  94       break;
  95     default:
  96       return;
  97     }
  98
  99   monitor_supply_register (regno, val);
 100 }
 101
 102 static void
 103 dink32_load (monops, filename, from_tty)
 104      struct monitor_ops *monops;
 105      char *filename;
 106      int from_tty;
 107 {
 108   extern int inferior_pid;
 109
 110   generic_load (filename, from_tty);
 111
 112   /* Finally, make the PC point at the start address */
 113   if (exec_bfd)
 114     write_pc (bfd_get_start_address (exec_bfd));
 115
 116   inferior_pid = 0;             /* No process now */
 117 }
 118
 119
 120 /* This array of registers needs to match the indexes used by GDB. The
 121    whole reason this exists is because the various ROM monitors use
 122    different names than GDB does, and don't support all the registers
 123    either.  */
 124
 125 static char *dink32_regnames[NUM_REGS] =
 126 {
 127   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 128   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 129   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 130   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
 131
 132   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 133   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 134   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 135   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 136
 137   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 138 };
 139
 140 static struct target_ops dink32_ops;
 141
 142 static char *dink32_inits[] =
 143 {"\r", NULL};
 144
 145 static struct monitor_ops dink32_cmds;
 146
 147 static void
 148 dink32_open (args, from_tty)
 149      char *args;
 150      int from_tty;
 151 {
 152   monitor_open (args, &dink32_cmds, from_tty);
 153 }
 154
 155 void
 156 _initialize_dink32_rom ()
 157 {
 158   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;
 159   dink32_cmds.init = dink32_inits;
 160   dink32_cmds.cont = "go +\r";
 161   dink32_cmds.step = "tr +\r";
 162   dink32_cmds.set_break = "bp 0x%x\r";
 163   dink32_cmds.clr_break = "bp %d\r";
 164 #if 0                           /* Would need to follow strict alignment rules.. */
 165   dink32_cmds.fill = "mf %x %x %x\r";
 166 #endif
 167   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 168   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 169   dink32_cmds.setmem.cmdl = "mm %x\r";
 170   dink32_cmds.setmem.term = " ?  ";
 171   dink32_cmds.getmem.cmdb = "md %x\r";
 172   dink32_cmds.getmem.resp_delim = "        ";
 173   dink32_cmds.setreg.cmd = "rm %s\r";
 174   dink32_cmds.setreg.term = " ?  ";
 175   dink32_cmds.getreg.cmd = "rd %s\r";
 176   dink32_cmds.getreg.resp_delim = ": ";
 177   dink32_cmds.dump_registers = "rd r\r";
 178   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 179   dink32_cmds.supply_register = dink32_supply_register;
 180   /* S-record download, via "keyboard port".  */
 181   dink32_cmds.load = "dl -k\r";
 182   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 183 #if 0                           /* slow load routine not needed if S-records work... */
 184   dink32_cmds.load_routine = dink32_load;
 185 #endif
 186   dink32_cmds.prompt = "DINK32_603 >>";
 187   dink32_cmds.line_term = "\r";
 188   dink32_cmds.target = &dink32_ops;
 189   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 190   dink32_cmds.regnames = dink32_regnames;
 191   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 192
 193   init_monitor_ops (&dink32_ops);
 194
 195   dink32_ops.to_shortname = "dink32";
 196   dink32_ops.to_longname = "DINK32 monitor";
 197   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 198 Specify the serial device it is connected to (e.g. /dev/ttya).";
 199   dink32_ops.to_open = dink32_open;
 200
 201   add_target (&dink32_ops);
 202 }