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