gdb/dink32-rom.c

   1 /* Remote debugging interface for DINK32 (PowerPC) ROM monitor for
   2    GDB, the GNU debugger.
   3    Copyright (C) 1997, 1999, 2000, 2001, 2007 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 3 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, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "gdbcore.h"
  22 #include "target.h"
  23 #include "monitor.h"
  24 #include "serial.h"
  25 #include "symfile.h" /* For generic_load() */
  26 #include "inferior.h" /* For write_pc() */
  27 #include "regcache.h"
  28
  29 static void dink32_open (char *args, int from_tty);
  30
  31 static void
  32 dink32_supply_register (struct regcache *regcache, char *regname,
  33                         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 (regcache, regno, val);
  96 }
  97
  98 /* This array of registers needs to match the indexes used by GDB. The
  99    whole reason this exists is because the various ROM monitors use
 100    different names than GDB does, and don't support all the registers
 101    either.  */
 102
 103 static char *dink32_regnames[] =
 104 {
 105   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 106   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
 107   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
 108   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
 109
 110   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
 111   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
 112   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
 113   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
 114
 115   "srr0", "msr", "cr", "lr", "ctr", "xer", "xer"
 116 };
 117
 118 static struct target_ops dink32_ops;
 119
 120 static char *dink32_inits[] =
 121 {"\r", NULL};
 122
 123 static struct monitor_ops dink32_cmds;
 124
 125 static void
 126 dink32_open (char *args, int from_tty)
 127 {
 128   monitor_open (args, &dink32_cmds, from_tty);
 129 }
 130
 131 extern initialize_file_ftype _initialize_dink32_rom; /* -Wmissing-prototypes */
 132
 133 void
 134 _initialize_dink32_rom (void)
 135 {
 136   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;
 137   dink32_cmds.init = dink32_inits;
 138   dink32_cmds.cont = "go +\r";
 139   dink32_cmds.step = "tr +\r";
 140   dink32_cmds.set_break = "bp 0x%x\r";
 141   dink32_cmds.clr_break = "bp %d\r";
 142 #if 0                           /* Would need to follow strict alignment rules.. */
 143   dink32_cmds.fill = "mf %x %x %x\r";
 144 #endif
 145   dink32_cmds.setmem.cmdb = "mm -b %x\r";
 146   dink32_cmds.setmem.cmdw = "mm -w %x\r";
 147   dink32_cmds.setmem.cmdl = "mm %x\r";
 148   dink32_cmds.setmem.term = " ?  ";
 149   dink32_cmds.getmem.cmdb = "md %x\r";
 150   dink32_cmds.getmem.resp_delim = "        ";
 151   dink32_cmds.setreg.cmd = "rm %s\r";
 152   dink32_cmds.setreg.term = " ?  ";
 153   dink32_cmds.getreg.cmd = "rd %s\r";
 154   dink32_cmds.getreg.resp_delim = ": ";
 155   dink32_cmds.dump_registers = "rd r\r";
 156   dink32_cmds.register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
 157   dink32_cmds.supply_register = dink32_supply_register;
 158   /* S-record download, via "keyboard port".  */
 159   dink32_cmds.load = "dl -k\r";
 160   dink32_cmds.loadresp = "Set Input Port : set to Keyboard Port\r";
 161   dink32_cmds.prompt = "DINK32_603 >>";
 162   dink32_cmds.line_term = "\r";
 163   dink32_cmds.target = &dink32_ops;
 164   dink32_cmds.stopbits = SERIAL_1_STOPBITS;
 165   dink32_cmds.regnames = dink32_regnames;
 166   dink32_cmds.magic = MONITOR_OPS_MAGIC;
 167
 168   init_monitor_ops (&dink32_ops);
 169
 170   dink32_ops.to_shortname = "dink32";
 171   dink32_ops.to_longname = "DINK32 monitor";
 172   dink32_ops.to_doc = "Debug using the DINK32 monitor.\n\
 173 Specify the serial device it is connected to (e.g. /dev/ttya).";
 174   dink32_ops.to_open = dink32_open;
 175
 176   add_target (&dink32_ops);
 177 }