gdb/dink32-rom.c

   1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
   2    GDB, the GNU debugger.
   3    Copyright 1997, 1999, 2000, 2001 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 #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 static void
 100 dink32_load (struct monitor_ops *monops, char *filename, int from_tty)
 101 {
 102   generic_load (filename, from_tty);
 103
 104   /* Finally, make the PC point at the start address */
 105   if (exec_bfd)
 106     write_pc (bfd_get_start_address (exec_bfd));
 107
 108   inferior_ptid = null_ptid;            /* No process now */
 109 }
 110
 111
 112 /* This array of registers needs to match the indexes used by GDB. The
 113    whole reason this exists is because the various ROM monitors use
 114    different names than GDB does, and don't support all the registers
 115    either.  */
 116
 117 static char *dink32_regnames[] =
 118 {
 119   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 120   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 121   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 122   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
 123
 124   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 125   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 126   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 127   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 128
 129   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 130 };
 131
 132 static struct target_ops dink32_ops;
 133
 134 static char *dink32_inits[] =
 135 {"\r", NULL};
 136
 137 static struct monitor_ops dink32_cmds;
 138
 139 static void
 140 dink32_open (char *args, int from_tty)
 141 {
 142   monitor_open (args, &dink32_cmds, from_tty);
 143 }
 144
 145 void
 146 _initialize_dink32_rom (void)
 147 {
 148   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;
 149   dink32_cmds.init = dink32_inits;
 150   dink32_cmds.cont = "go +\r";
 151   dink32_cmds.step = "tr +\r";
 152   dink32_cmds.set_break = "bp 0x%x\r";
 153   dink32_cmds.clr_break = "bp %d\r";
 154 #if 0                           /* Would need to follow strict alignment rules.. */
 155   dink32_cmds.fill = "mf %x %x %x\r";
 156 #endif
 157   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 158   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 159   dink32_cmds.setmem.cmdl = "mm %x\r";
 160   dink32_cmds.setmem.term = " ?  ";
 161   dink32_cmds.getmem.cmdb = "md %x\r";
 162   dink32_cmds.getmem.resp_delim = "        ";
 163   dink32_cmds.setreg.cmd = "rm %s\r";
 164   dink32_cmds.setreg.term = " ?  ";
 165   dink32_cmds.getreg.cmd = "rd %s\r";
 166   dink32_cmds.getreg.resp_delim = ": ";
 167   dink32_cmds.dump_registers = "rd r\r";
 168   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 169   dink32_cmds.supply_register = dink32_supply_register;
 170   /* S-record download, via "keyboard port".  */
 171   dink32_cmds.load = "dl -k\r";
 172   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 173 #if 0                           /* slow load routine not needed if S-records work... */
 174   dink32_cmds.load_routine = dink32_load;
 175 #endif
 176   dink32_cmds.prompt = "DINK32_603 >>";
 177   dink32_cmds.line_term = "\r";
 178   dink32_cmds.target = &dink32_ops;
 179   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 180   dink32_cmds.regnames = dink32_regnames;
 181   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 182
 183   init_monitor_ops (&dink32_ops);
 184
 185   dink32_ops.to_shortname = "dink32";
 186   dink32_ops.to_longname = "DINK32 monitor";
 187   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 188 Specify the serial device it is connected to (e.g. /dev/ttya).";
 189   dink32_ops.to_open = dink32_open;
 190
 191   add_target (&dink32_ops);
 192 }