gdb/sh3-rom.c

   1 /* Remote target glue for the Hitachi SH-3 ROM monitor.
   2    Copyright 1995 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #include "defs.h"
  21 #include "gdbcore.h"
  22 #include "target.h"
  23 #include "monitor.h"
  24 #include "serial.h"
  25
  26 static void sh3_open PARAMS ((char *args, int from_tty));
  27
  28 static void
  29 sh3_supply_register (regname, regnamelen, val, vallen)
  30      char *regname;
  31      int regnamelen;
  32      char *val;
  33      int vallen;
  34 {
  35   int numregs;
  36   int regno;
  37
  38   numregs = 1;
  39   regno = -1;
  40
  41   if (regnamelen == 2)
  42     switch (regname[0])
  43       {
  44       case 'S':
  45         if (regname[1] == 'R')
  46           regno = SR_REGNUM;
  47         break;
  48       case 'P':
  49         if (regname[1] == 'C')
  50           regno = PC_REGNUM;
  51         else if (regname[1] == 'R')
  52           regno = PR_REGNUM;
  53         break;
  54       }
  55   else if (regnamelen == 3)
  56     switch (regname[0])
  57       {
  58       case 'G':
  59       case 'V':
  60         if (regname[1] == 'B' && regname[2] == 'R')
  61           if (regname[0] == 'G')
  62             regno = VBR_REGNUM;
  63           else
  64             regno = GBR_REGNUM;
  65         break;
  66 #if 0
  67       case 'S':
  68         if (regname[1] == 'S' && regname[2] == 'R')
  69           regno = SSR_REGNUM;
  70         else if (regname[1] == 'P' && regname[2] == 'C')
  71           regno = SPC_REGNUM;
  72         break;
  73 #endif
  74       }
  75   else if (regnamelen == 4)
  76     switch (regname[0])
  77       {
  78       case 'M':
  79         if (regname[1] == 'A' && regname[2] == 'C')
  80           if (regname[3] == 'H')
  81             regno = MACH_REGNUM;
  82           else if (regname[3] == 'L')
  83             regno = MACL_REGNUM;
  84         break;
  85       case 'R':
  86         if (regname[1] == '0' && regname[2] == '-' && regname[3] == '7')
  87           {
  88             regno = R0_REGNUM;
  89             numregs = 8;
  90           }
  91       }
  92   else if (regnamelen == 5)
  93     if (regname[1] == '8' && regname[2] == '-' && regname[3] == '1'
  94         && regname[4] =='5')
  95       {
  96         regno = R0_REGNUM + 8;
  97         numregs = 8;
  98       }
  99
 100   if (regno >= 0)
 101     while (numregs-- > 0)
 102       val = monitor_supply_register (regno++, val);
 103 }
 104
 105 /* This array of registers need to match the indexes used by GDB.
 106    This exists because the various ROM monitors use different strings
 107    than does GDB, and don't necessarily support all the registers
 108    either. So, typing "info reg sp" becomes a "r30".  */
 109
 110 static char *sh3_regnames[NUM_REGS] = {
 111   "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7",
 112   "R8", "R9", "R10","R11","R12","R13","R14","R15",
 113   "PC", "PR", "GBR","VBR","MACH","MACL","SR",NULL,
 114   NULL,  NULL, NULL, NULL};
 115
 116 /* Define the monitor command strings. Since these are passed directly
 117    through to a printf style function, we may include formatting
 118    strings. We also need a CR or LF on the end.  */
 119
 120 static struct target_ops sh3_ops;
 121
 122 static char *sh3_inits[] = {"\003", NULL}; /* Exits sub-command mode & download cmds */
 123
 124 static struct monitor_ops sh3_cmds =
 125 {
 126   0,                            /* flags */
 127   sh3_inits,                    /* monitor init string */
 128   "g\r",                        /* continue command */
 129   "s\r",                        /* single step */
 130   "\003",                       /* Interrupt program */
 131   "b %x\r",                     /* set a breakpoint */
 132   "b -%x\r",                    /* clear a breakpoint */
 133   "b -\r",                      /* clear all breakpoints */
 134   "f %x @%x %x\r",              /* fill (start len val) */
 135   {
 136     "m %x %x\r",                /* setmem.cmdb (addr, value) */
 137     "m %x %x;w\r",              /* setmem.cmdw (addr, value) */
 138     "m %x %x;l\r",              /* setmem.cmdl (addr, value) */
 139     NULL,                       /* setmem.cmdll (addr, value) */
 140     NULL,                       /* setreg.resp_delim */
 141     NULL,                       /* setreg.term */
 142     NULL,                       /* setreg.term_cmd */
 143   },
 144   {
 145     "d %x@%x;b\r",              /* getmem.cmdb (addr, len) */
 146     "d %x@%x;w\r",              /* getmem.cmdw (addr, len) */
 147     "d %x@%x;l\r",              /* getmem.cmdl (addr, len) */
 148     NULL,                       /* getmem.cmdll (addr, len) */
 149     "^[0-9A-F]+  ",             /* getmem.resp_delim */
 150     NULL,                       /* getmem.term */
 151     NULL,                       /* getmem.term_cmd */
 152   },
 153   {
 154     ".%s %x\r",                 /* setreg.cmd (name, value) */
 155     NULL,                       /* setreg.resp_delim */
 156     NULL,                       /* setreg.term */
 157     NULL                        /* setreg.term_cmd */
 158   },
 159   {
 160     ".%s\r",                    /* getreg.cmd (name) */
 161     "=",                        /* getreg.resp_delim */
 162     "? ",                       /* getreg.term */
 163     ".\r"                       /* getreg.term_cmd */
 164   },
 165   "r\r",                        /* dump_registers */
 166                                 /* register_pattern */
 167   "\\(\\w+\\)=\\([0-9a-fA-F]+\\( +[0-9a-fA-F]+\\b\\)*\\)",
 168   sh3_supply_register,          /* supply_register */
 169   NULL,                         /* load_routine (defaults to SRECs) */
 170   "l\r",                        /* download command */
 171   NULL,                         /* Load response */
 172   "\n:",                        /* monitor command prompt */
 173   "\r",                         /* end-of-line terminator */
 174   ".\r",                        /* optional command terminator */
 175   &sh3_ops,                     /* target operations */
 176   SERIAL_1_STOPBITS,            /* number of stop bits */
 177   sh3_regnames,                 /* registers names */
 178   MONITOR_OPS_MAGIC             /* magic */
 179 };
 180
 181 static void
 182 sh3_open (args, from_tty)
 183      char *args;
 184      int from_tty;
 185 {
 186   monitor_open (args, &sh3_cmds, from_tty);
 187 }
 188
 189 void
 190 _initialize_sh3 ()
 191 {
 192   init_monitor_ops (&sh3_ops);
 193
 194   sh3_ops.to_shortname = "sh3";
 195   sh3_ops.to_longname = "Hitachi SH-3 rom monitor";
 196   sh3_ops.to_doc = "Debug on a Hitachi eval board running the SH-3 rom monitor.\n\
 197 Specify the serial device it is connected to (e.g. /dev/ttya).";
 198   sh3_ops.to_open = sh3_open;
 199
 200   add_target (&sh3_ops);
 201 }