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
  28 static void dink32_open PARAMS ((char *args, int from_tty));
  29
  30 static void
  31 dink32_supply_register (regname, regnamelen, val, vallen)
  32      char *regname;
  33      int regnamelen;
  34      char *val;
  35      int vallen;
  36 {
  37   int regno = 0, base = 0;
  38
  39   if (regnamelen < 2 || regnamelen > 4)
  40     return;
  41
  42   switch (regname[0])
  43     {
  44     case 'R':
  45       if (regname[1] < '0' || regname[1] > '9')
  46         return;
  47       if (regnamelen == 2)
  48         regno = regname[1] - '0';
  49       else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
  50         regno = (regname[1] - '0') * 10 + (regname[2] - '0');
  51       else
  52         return;
  53       break;
  54     case 'F':
  55       if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
  56         return;
  57       if (regnamelen == 3)
  58         regno = 32 + regname[2] - '0';
  59       else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
  60         regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
  61       else
  62         return;
  63       break;
  64     case 'I':
  65       if (regnamelen != 2 || regname[1] != 'P')
  66         return;
  67       regno = 64;
  68       break;
  69     case 'M':
  70       if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
  71         return;
  72       regno = 65;
  73       break;
  74     case 'C':
  75       if (regnamelen != 2 || regname[1] != 'R')
  76         return;
  77       regno = 66;
  78       break;
  79     case 'S':
  80       if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
  81         return;
  82       else if (regname[3] == '8')
  83         regno = 67;
  84       else if (regname[3] == '9')
  85         regno = 68;
  86       else if (regname[3] == '1')
  87         regno = 69;
  88       else if (regname[3] == '0')
  89         regno = 70;
  90       else
  91         return;
  92       break;
  93     default:
  94       return;
  95     }
  96
  97   monitor_supply_register (regno, val);
  98 }
  99
 100 static void
 101 dink32_load (monops, filename, from_tty)
 102      struct monitor_ops *monops;
 103      char *filename;
 104      int from_tty;
 105 {
 106   extern int inferior_pid;
 107
 108   generic_load (filename, from_tty);
 109
 110   /* Finally, make the PC point at the start address */
 111   if (exec_bfd)
 112     write_pc (bfd_get_start_address (exec_bfd));
 113
 114   inferior_pid = 0;             /* No process now */
 115 }
 116
 117
 118 /* This array of registers needs to match the indexes used by GDB. The
 119    whole reason this exists is because the various ROM monitors use
 120    different names than GDB does, and don't support all the registers
 121    either.  */
 122
 123 static char *dink32_regnames[NUM_REGS] =
 124 {
 125   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 126   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 127   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 128   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
 129
 130   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 131   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 132   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 133   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 134
 135   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 136 };
 137
 138 static struct target_ops dink32_ops;
 139
 140 static char *dink32_inits[] =
 141 {"\r", NULL};
 142
 143 static struct monitor_ops dink32_cmds;
 144
 145 static void
 146 dink32_open (args, from_tty)
 147      char *args;
 148      int from_tty;
 149 {
 150   monitor_open (args, &dink32_cmds, from_tty);
 151 }
 152
 153 void
 154 _initialize_dink32_rom ()
 155 {
 156   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;
 157   dink32_cmds.init = dink32_inits;
 158   dink32_cmds.cont = "go +\r";
 159   dink32_cmds.step = "tr +\r";
 160   dink32_cmds.set_break = "bp 0x%x\r";
 161   dink32_cmds.clr_break = "bp %d\r";
 162 #if 0                           /* Would need to follow strict alignment rules.. */
 163   dink32_cmds.fill = "mf %x %x %x\r";
 164 #endif
 165   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 166   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 167   dink32_cmds.setmem.cmdl = "mm %x\r";
 168   dink32_cmds.setmem.term = " ?  ";
 169   dink32_cmds.getmem.cmdb = "md %x\r";
 170   dink32_cmds.getmem.resp_delim = "        ";
 171   dink32_cmds.setreg.cmd = "rm %s\r";
 172   dink32_cmds.setreg.term = " ?  ";
 173   dink32_cmds.getreg.cmd = "rd %s\r";
 174   dink32_cmds.getreg.resp_delim = ": ";
 175   dink32_cmds.dump_registers = "rd r\r";
 176   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 177   dink32_cmds.supply_register = dink32_supply_register;
 178   /* S-record download, via "keyboard port".  */
 179   dink32_cmds.load = "dl -k\r";
 180   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 181 #if 0                           /* slow load routine not needed if S-records work... */
 182   dink32_cmds.load_routine = dink32_load;
 183 #endif
 184   dink32_cmds.prompt = "DINK32_603 >>";
 185   dink32_cmds.line_term = "\r";
 186   dink32_cmds.target = &dink32_ops;
 187   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 188   dink32_cmds.regnames = dink32_regnames;
 189   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 190
 191   init_monitor_ops (&dink32_ops);
 192
 193   dink32_ops.to_shortname = "dink32";
 194   dink32_ops.to_longname = "DINK32 monitor";
 195   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 196 Specify the serial device it is connected to (e.g. /dev/ttya).";
 197   dink32_ops.to_open = dink32_open;
 198
 199   add_target (&dink32_ops);
 200 }