gdb/remote-est.c

   1 /* Remote debugging interface for EST-300 ICE, for GDB
   2    Copyright 1995 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.
   4
   5    Written by Steve Chamberlain for Cygnus Support.
   6    Re-written by Stu Grossman of Cygnus Support
   7
   8 This file is part of GDB.
   9
  10 This program is free software; you can redistribute it and/or modify
  11 it under the terms of the GNU General Public License as published by
  12 the Free Software Foundation; either version 2 of the License, or
  13 (at your option) any later version.
  14
  15 This program is distributed in the hope that it will be useful,
  16 but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 GNU General Public License for more details.
  19
  20 You should have received a copy of the GNU General Public License
  21 along with this program; if not, write to the Free Software
  22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  23
  24 #include "defs.h"
  25 #include "gdbcore.h"
  26 #include "target.h"
  27 #include "monitor.h"
  28 #include "serial.h"
  29
  30 static void est_open PARAMS ((char *args, int from_tty));
  31
  32 static void
  33 est_supply_register (regname, regnamelen, val, vallen)
  34      char *regname;
  35      int regnamelen;
  36      char *val;
  37      int vallen;
  38 {
  39   int regno;
  40
  41   if (regnamelen != 2)
  42     return;
  43
  44   switch (regname[0])
  45     {
  46     case 'S':
  47       if (regname[1] != 'R')
  48         return;
  49       regno = PS_REGNUM;
  50       break;
  51     case 'P':
  52       if (regname[1] != 'C')
  53         return;
  54       regno = PC_REGNUM;
  55       break;
  56     case 'D':
  57       if (regname[1] < '0' || regname[1] > '7')
  58         return;
  59       regno = regname[1] - '0' + D0_REGNUM;
  60       break;
  61     case 'A':
  62       if (regname[1] < '0' || regname[1] > '7')
  63         return;
  64       regno = regname[1] - '0' + A0_REGNUM;
  65       break;
  66     default:
  67       return;
  68     }
  69
  70   monitor_supply_register (regno, val);
  71 }
  72
  73 /*
  74  * This array of registers needs to match the indexes used by GDB. The
  75  * whole reason this exists is because the various ROM monitors use
  76  * different names than GDB does, and don't support all the
  77  * registers either. So, typing "info reg sp" becomes a "r30".
  78  */
  79
  80 static char *est_regnames[NUM_REGS] =
  81 {
  82   "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
  83   "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  84   "SR", "PC",
  85 };
  86
  87 /*
  88  * Define the monitor command strings. Since these are passed directly
  89  * through to a printf style function, we need can include formatting
  90  * strings. We also need a CR or LF on the end.
  91  */
  92
  93 static struct target_ops est_ops;
  94
  95 static char *est_inits[] = {"he\r", /* Resets the prompt, and clears repeated cmds */
  96                               NULL};
  97
  98 static struct monitor_ops est_cmds =
  99 {
 100   MO_CLR_BREAK_USES_ADDR | MO_FILL_USES_ADDR | MO_NEED_REGDUMP_AFTER_CONT,
 101   est_inits,                    /* Init strings */
 102   "go\r",                       /* continue command */
 103   "sidr\r",                     /* single step */
 104   "\003",                       /* ^C interrupts the program */
 105   "sb %x\r",                    /* set a breakpoint */
 106   "rb %x\r",                    /* clear a breakpoint */
 107   "rb\r",                       /* clear all breakpoints */
 108   "bfb %x %x %x\r",             /* fill (start end val) */
 109   {
 110     "smb %x %x\r",              /* setmem.cmdb (addr, value) */
 111     "smw %x %x\r",              /* setmem.cmdw (addr, value) */
 112     "sml %x %x\r",              /* setmem.cmdl (addr, value) */
 113     NULL,                       /* setmem.cmdll (addr, value) */
 114     NULL,                       /* setreg.resp_delim */
 115     NULL,                       /* setreg.term */
 116     NULL,                       /* setreg.term_cmd */
 117   },
 118   {
 119     "dmb %x %x\r",              /* getmem.cmdb (addr, len) */
 120     "dmw %x %x\r",              /* getmem.cmdw (addr, len) */
 121     "dml %x %x\r",              /* getmem.cmdl (addr, len) */
 122     NULL,                       /* getmem.cmdll (addr, len) */
 123     ": ",                       /* getmem.resp_delim */
 124     NULL,                       /* getmem.term */
 125     NULL,                       /* getmem.term_cmd */
 126   },
 127   {
 128     "sr %s %x\r",               /* setreg.cmd (name, value) */
 129     NULL,                       /* setreg.resp_delim */
 130     NULL,                       /* setreg.term */
 131     NULL                        /* setreg.term_cmd */
 132   },
 133   {
 134     "dr %s\r",                  /* getreg.cmd (name) */
 135     " = ",                      /* getreg.resp_delim */
 136     NULL,                       /* getreg.term */
 137     NULL                        /* getreg.term_cmd */
 138   },
 139   "dr\r",                       /* dump_registers */
 140   "\\(\\w+\\) = \\([0-9a-fA-F]+\\)", /* register_pattern */
 141   est_supply_register,          /* supply_register */
 142   NULL,                         /* load_routine (defaults to SRECs) */
 143   "dl\r",                       /* download command */
 144   "+",                          /* load response */
 145   ">BKM>",                      /* monitor command prompt */
 146   NULL,                         /* end-of-command delimitor */
 147   NULL,                         /* optional command terminator */
 148   &est_ops,                     /* target operations */
 149   SERIAL_1_STOPBITS,            /* number of stop bits */
 150   est_regnames,                 /* registers names */
 151   MONITOR_OPS_MAGIC             /* magic */
 152   };
 153
 154 void
 155 est_open(args, from_tty)
 156      char *args;
 157      int from_tty;
 158 {
 159   monitor_open (args, &est_cmds, from_tty);
 160 }
 161
 162 void
 163 _initialize_est ()
 164 {
 165   init_monitor_ops (&est_ops);
 166
 167   est_ops.to_shortname = "est";
 168   est_ops.to_longname = "EST background debug monitor";
 169   est_ops.to_doc = "Debug via the EST BDM.\n\
 170 Specify the serial device it is connected to (e.g. /dev/ttya).";
 171   est_ops.to_open = est_open;
 172
 173   add_target (&est_ops);
 174 }