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   extern int inferior_pid;
 103
 104   generic_load (filename, from_tty);
 105
 106   /* Finally, make the PC point at the start address */
 107   if (exec_bfd)
 108     write_pc (bfd_get_start_address (exec_bfd));
 109
 110   inferior_pid = 0;             /* No process now */
 111 }
 112
 113
 114 /* This array of registers needs to match the indexes used by GDB. The
 115    whole reason this exists is because the various ROM monitors use
 116    different names than GDB does, and don't support all the registers
 117    either.  */
 118
 119 static char *dink32_regnames[] =
 120 {
 121   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 122   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 123   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 124   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
 125
 126   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 127   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 128   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 129   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 130
 131   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 132 };
 133
 134 static struct target_ops dink32_ops;
 135
 136 static char *dink32_inits[] =
 137 {"\r", NULL};
 138
 139 static struct monitor_ops dink32_cmds;
 140
 141 static void
 142 dink32_open (char *args, int from_tty)
 143 {
 144   monitor_open (args, &dink32_cmds, from_tty);
 145 }
 146
 147 void
 148 _initialize_dink32_rom (void)
 149 {
 150   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;
 151   dink32_cmds.init = dink32_inits;
 152   dink32_cmds.cont = "go +\r";
 153   dink32_cmds.step = "tr +\r";
 154   dink32_cmds.set_break = "bp 0x%x\r";
 155   dink32_cmds.clr_break = "bp %d\r";
 156 #if 0                           /* Would need to follow strict alignment rules.. */
 157   dink32_cmds.fill = "mf %x %x %x\r";
 158 #endif
 159   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 160   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 161   dink32_cmds.setmem.cmdl = "mm %x\r";
 162   dink32_cmds.setmem.term = " ?  ";
 163   dink32_cmds.getmem.cmdb = "md %x\r";
 164   dink32_cmds.getmem.resp_delim = "        ";
 165   dink32_cmds.setreg.cmd = "rm %s\r";
 166   dink32_cmds.setreg.term = " ?  ";
 167   dink32_cmds.getreg.cmd = "rd %s\r";
 168   dink32_cmds.getreg.resp_delim = ": ";
 169   dink32_cmds.dump_registers = "rd r\r";
 170   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 171   dink32_cmds.supply_register = dink32_supply_register;
 172   /* S-record download, via "keyboard port".  */
 173   dink32_cmds.load = "dl -k\r";
 174   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 175 #if 0                           /* slow load routine not needed if S-records work... */
 176   dink32_cmds.load_routine = dink32_load;
 177 #endif
 178   dink32_cmds.prompt = "DINK32_603 >>";
 179   dink32_cmds.line_term = "\r";
 180   dink32_cmds.target = &dink32_ops;
 181   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 182   dink32_cmds.regnames = dink32_regnames;
 183   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 184
 185   init_monitor_ops (&dink32_ops);
 186
 187   dink32_ops.to_shortname = "dink32";
 188   dink32_ops.to_longname = "DINK32 monitor";
 189   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 190 Specify the serial device it is connected to (e.g. /dev/ttya).";
 191   dink32_ops.to_open = dink32_open;
 192
 193   add_target (&dink32_ops);
 194 }