gdb/remote-est.c

   1 /* Remote debugging interface for EST-300 ICE, for GDB
   2    Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001
   3    Free Software Foundation, Inc.
   4    Contributed by Cygnus Support.
   5
   6    Written by Steve Chamberlain for Cygnus Support.
   7    Re-written by Stu Grossman of Cygnus Support
   8
   9    This file is part of GDB.
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software
  23    Foundation, Inc., 59 Temple Place - Suite 330,
  24    Boston, MA 02111-1307, USA.  */
  25
  26 #include "defs.h"
  27 #include "gdbcore.h"
  28 #include "target.h"
  29 #include "monitor.h"
  30 #include "serial.h"
  31 #include "regcache.h"
  32
  33 #include "m68k-tdep.h"
  34
  35 static void est_open (char *args, int from_tty);
  36
  37 static void
  38 est_supply_register (char *regname, int regnamelen, char *val, int vallen)
  39 {
  40   int regno;
  41
  42   if (regnamelen != 2)
  43     return;
  44
  45   switch (regname[0])
  46     {
  47     case 'S':
  48       if (regname[1] != 'R')
  49         return;
  50       regno = PS_REGNUM;
  51       break;
  52     case 'P':
  53       if (regname[1] != 'C')
  54         return;
  55       regno = PC_REGNUM;
  56       break;
  57     case 'D':
  58       if (regname[1] < '0' || regname[1] > '7')
  59         return;
  60       regno = regname[1] - '0' + M68K_D0_REGNUM;
  61       break;
  62     case 'A':
  63       if (regname[1] < '0' || regname[1] > '7')
  64         return;
  65       regno = regname[1] - '0' + M68K_A0_REGNUM;
  66       break;
  67     default:
  68       return;
  69     }
  70
  71   monitor_supply_register (regno, val);
  72 }
  73
  74 /*
  75  * This array of registers needs to match the indexes used by GDB. The
  76  * whole reason this exists is because the various ROM monitors use
  77  * different names than GDB does, and don't support all the
  78  * registers either. So, typing "info reg sp" becomes a "r30".
  79  */
  80
  81 static const char *
  82 est_regname (int index)
  83 {
  84
  85   static char *regnames[] =
  86   {
  87     "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
  88     "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  89     "SR", "PC",
  90   };
  91
  92
  93   if ((index >= (sizeof (regnames) /  sizeof (regnames[0])))
  94        || (index < 0) || (index >= NUM_REGS))
  95     return NULL;
  96   else
  97     return regnames[index];
  98 }
  99
 100 /*
 101  * Define the monitor command strings. Since these are passed directly
 102  * through to a printf style function, we need can include formatting
 103  * strings. We also need a CR or LF on the end.
 104  */
 105
 106 static struct target_ops est_ops;
 107
 108 static char *est_inits[] =
 109 {"he\r",                        /* Resets the prompt, and clears repeated cmds */
 110  NULL};
 111
 112 static struct monitor_ops est_cmds;
 113
 114 static void
 115 init_est_cmds (void)
 116 {
 117   est_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_FILL_USES_ADDR | MO_NEED_REGDUMP_AFTER_CONT |
 118     MO_SREC_ACK | MO_SREC_ACK_PLUS;
 119   est_cmds.init = est_inits;    /* Init strings */
 120   est_cmds.cont = "go\r";       /* continue command */
 121   est_cmds.step = "sidr\r";     /* single step */
 122   est_cmds.stop = "\003";       /* ^C interrupts the program */
 123   est_cmds.set_break = "sb %x\r";       /* set a breakpoint */
 124   est_cmds.clr_break = "rb %x\r";       /* clear a breakpoint */
 125   est_cmds.clr_all_break = "rb\r";      /* clear all breakpoints */
 126   est_cmds.fill = "bfb %x %x %x\r";     /* fill (start end val) */
 127   est_cmds.setmem.cmdb = "smb %x %x\r";         /* setmem.cmdb (addr, value) */
 128   est_cmds.setmem.cmdw = "smw %x %x\r";         /* setmem.cmdw (addr, value) */
 129   est_cmds.setmem.cmdl = "sml %x %x\r";         /* setmem.cmdl (addr, value) */
 130   est_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
 131   est_cmds.setmem.resp_delim = NULL;    /* setreg.resp_delim */
 132   est_cmds.setmem.term = NULL;  /* setreg.term */
 133   est_cmds.setmem.term_cmd = NULL;      /* setreg.term_cmd */
 134   est_cmds.getmem.cmdb = "dmb %x %x\r";         /* getmem.cmdb (addr, len) */
 135   est_cmds.getmem.cmdw = "dmw %x %x\r";         /* getmem.cmdw (addr, len) */
 136   est_cmds.getmem.cmdl = "dml %x %x\r";         /* getmem.cmdl (addr, len) */
 137   est_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, len) */
 138   est_cmds.getmem.resp_delim = ": ";    /* getmem.resp_delim */
 139   est_cmds.getmem.term = NULL;  /* getmem.term */
 140   est_cmds.getmem.term_cmd = NULL;      /* getmem.term_cmd */
 141   est_cmds.setreg.cmd = "sr %s %x\r";   /* setreg.cmd (name, value) */
 142   est_cmds.setreg.resp_delim = NULL;    /* setreg.resp_delim */
 143   est_cmds.setreg.term = NULL;  /* setreg.term */
 144   est_cmds.setreg.term_cmd = NULL;      /* setreg.term_cmd */
 145   est_cmds.getreg.cmd = "dr %s\r";      /* getreg.cmd (name) */
 146   est_cmds.getreg.resp_delim = " = ";   /* getreg.resp_delim */
 147   est_cmds.getreg.term = NULL;  /* getreg.term */
 148   est_cmds.getreg.term_cmd = NULL;      /* getreg.term_cmd */
 149   est_cmds.dump_registers = "dr\r";     /* dump_registers */
 150   est_cmds.register_pattern = "\\(\\w+\\) = \\([0-9a-fA-F]+\\)";        /* register_pattern */
 151   est_cmds.supply_register = est_supply_register;
 152   est_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
 153   est_cmds.load = "dl\r";       /* download command */
 154   est_cmds.loadresp = "+";      /* load response */
 155   est_cmds.prompt = ">BKM>";    /* monitor command prompt */
 156   est_cmds.line_term = "\r";    /* end-of-line terminator */
 157   est_cmds.cmd_end = NULL;      /* optional command terminator */
 158   est_cmds.target = &est_ops;   /* target operations */
 159   est_cmds.stopbits = SERIAL_1_STOPBITS;        /* number of stop bits */
 160   est_cmds.regnames = NULL;
 161   est_cmds.regname = est_regname; /*register names*/
 162   est_cmds.magic = MONITOR_OPS_MAGIC;   /* magic */
 163 }                               /* init_est_cmds */
 164
 165 static void
 166 est_open (char *args, int from_tty)
 167 {
 168   monitor_open (args, &est_cmds, from_tty);
 169 }
 170
 171 extern initialize_file_ftype _initialize_est; /* -Wmissing-prototypes */
 172
 173 void
 174 _initialize_est (void)
 175 {
 176   init_est_cmds ();
 177   init_monitor_ops (&est_ops);
 178
 179   est_ops.to_shortname = "est";
 180   est_ops.to_longname = "EST background debug monitor";
 181   est_ops.to_doc = "Debug via the EST BDM.\n\
 182 Specify the serial device it is connected to (e.g. /dev/ttya).";
 183   est_ops.to_open = est_open;
 184
 185   add_target (&est_ops);
 186 }