gdb/cpu32bug-rom.c

   1 /* Remote debugging interface for CPU32Bug Rom monitor for GDB, the GNU debugger.
   2    Copyright 1995 Free Software Foundation, Inc.
   3
   4    Written by Stu Grossman of Cygnus Support
   5
   6 This file is part of GDB.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 59 Temple Place - Suite 330, 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
  28 static void cpu32bug_open PARAMS ((char *args, int from_tty));
  29
  30 static void
  31 cpu32bug_supply_register (regname, regnamelen, val, vallen)
  32      char *regname;
  33      int regnamelen;
  34      char *val;
  35      int vallen;
  36 {
  37   int regno;
  38
  39   if (regnamelen != 2)
  40     return;
  41
  42   switch (regname[0])
  43     {
  44     case 'S':
  45       if (regname[1] != 'R')
  46         return;
  47       regno = PS_REGNUM;
  48       break;
  49     case 'P':
  50       if (regname[1] != 'C')
  51         return;
  52       regno = PC_REGNUM;
  53       break;
  54     case 'D':
  55       if (regname[1] < '0' || regname[1] > '7')
  56         return;
  57       regno = regname[1] - '0' + D0_REGNUM;
  58       break;
  59     case 'A':
  60       if (regname[1] < '0' || regname[1] > '7')
  61         return;
  62       regno = regname[1] - '0' + A0_REGNUM;
  63       break;
  64     default:
  65       return;
  66     }
  67
  68   monitor_supply_register (regno, val);
  69 }
  70
  71 /*
  72  * This array of registers needs to match the indexes used by GDB. The
  73  * whole reason this exists is because the various ROM monitors use
  74  * different names than GDB does, and don't support all the
  75  * registers either. So, typing "info reg sp" becomes an "A7".
  76  */
  77
  78 static char *cpu32bug_regnames[NUM_REGS] =
  79 {
  80   "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7",
  81   "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7",
  82   "SR", "PC",
  83 };
  84
  85 /*
  86  * Define the monitor command strings. Since these are passed directly
  87  * through to a printf style function, we need can include formatting
  88  * strings. We also need a CR or LF on the end.
  89  */
  90
  91 static struct target_ops cpu32bug_ops;
  92
  93 static char *cpu32bug_inits[] = {"\r", NULL};
  94
  95 static struct monitor_ops cpu32bug_cmds ;
  96
  97 static void
  98 init_cpu32bug_cmds(void)
  99 {
 100   cpu32bug_cmds.flags =   MO_CLR_BREAK_USES_ADDR;
 101   cpu32bug_cmds.init =   cpu32bug_inits;                /* Init strings */
 102   cpu32bug_cmds.cont =   "g\r";                 /* continue command */
 103   cpu32bug_cmds.step =   "t\r";                 /* single step */
 104   cpu32bug_cmds.stop =   NULL;                          /* interrupt command */
 105   cpu32bug_cmds.set_break =   "br %x\r";                        /* set a breakpoint */
 106   cpu32bug_cmds.clr_break =   "nobr %x\r";                      /* clear a breakpoint */
 107   cpu32bug_cmds.clr_all_break =   "nobr\r";                     /* clear all breakpoints */
 108   cpu32bug_cmds.fill =   "bf %x:%x %x;b\r";             /* fill (start count val) */
 109   cpu32bug_cmds.setmem.cmdb =     "ms %x %02x\r";               /* setmem.cmdb (addr, value) */
 110   cpu32bug_cmds.setmem.cmdw =     "ms %x %04x\r";               /* setmem.cmdw (addr, value) */
 111   cpu32bug_cmds.setmem.cmdl =     "ms %x %08x\r";               /* setmem.cmdl (addr, value) */
 112   cpu32bug_cmds.setmem.cmdll =     NULL;                        /* setmem.cmdll (addr, value) */
 113   cpu32bug_cmds.setmem.resp_delim =     NULL;                   /* setreg.resp_delim */
 114   cpu32bug_cmds.setmem.term =     NULL;                 /* setreg.term */
 115   cpu32bug_cmds.setmem.term_cmd =     NULL;                     /* setreg.term_cmd */
 116   cpu32bug_cmds.getmem.cmdb =     "md %x:%x;b\r";               /* getmem.cmdb (addr, len) */
 117   cpu32bug_cmds.getmem.cmdw =     "md %x:%x;b\r";               /* getmem.cmdw (addr, len) */
 118   cpu32bug_cmds.getmem.cmdl =     "md %x:%x;b\r";               /* getmem.cmdl (addr, len) */
 119   cpu32bug_cmds.getmem.cmdll =     NULL;                        /* getmem.cmdll (addr, len) */
 120   cpu32bug_cmds.getmem.resp_delim =     " ";                    /* getmem.resp_delim */
 121   cpu32bug_cmds.getmem.term =     NULL;                 /* getmem.term */
 122   cpu32bug_cmds.getmem.term_cmd =     NULL;                     /* getmem.term_cmd */
 123   cpu32bug_cmds.setreg.cmd =     "rs %s %x\r";          /* setreg.cmd (name, value) */
 124   cpu32bug_cmds.setreg.resp_delim =     NULL;                   /* setreg.resp_delim */
 125   cpu32bug_cmds.setreg.term =     NULL;                 /* setreg.term */
 126   cpu32bug_cmds.setreg.term_cmd =     NULL;                     /* setreg.term_cmd */
 127   cpu32bug_cmds.getreg.cmd =     "rs %s\r";                     /* getreg.cmd (name) */
 128   cpu32bug_cmds.getreg.resp_delim =     "=";                    /* getreg.resp_delim */
 129   cpu32bug_cmds.getreg.term =     NULL;                 /* getreg.term */
 130   cpu32bug_cmds.getreg.term_cmd =     NULL ;                    /* getreg.term_cmd */
 131   cpu32bug_cmds.dump_registers =   "rd\r";                      /* dump_registers */
 132   cpu32bug_cmds.register_pattern =   "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)"; /* register_pattern */
 133   cpu32bug_cmds.supply_register =   cpu32bug_supply_register;   /* supply_register */
 134   cpu32bug_cmds.load_routine =   NULL;                          /* load_routine (defaults to SRECs) */
 135   cpu32bug_cmds.load =   "lo\r";                        /* download command */
 136   cpu32bug_cmds.loadresp =   "\n";                              /* load response */
 137   cpu32bug_cmds.prompt =   "CPU32Bug>";                 /* monitor command prompt */
 138   cpu32bug_cmds.line_term =   "\r";                             /* end-of-line terminator */
 139   cpu32bug_cmds.cmd_end =   NULL;                               /* optional command terminator */
 140   cpu32bug_cmds.target =   &cpu32bug_ops;               /* target operations */
 141   cpu32bug_cmds.stopbits =   SERIAL_1_STOPBITS;         /* number of stop bits */
 142   cpu32bug_cmds.regnames =   cpu32bug_regnames;         /* registers names */
 143   cpu32bug_cmds.magic =   MONITOR_OPS_MAGIC;            /* magic */
 144 }; /* init_cpu32bug_cmds */
 145
 146 static void
 147 cpu32bug_open(args, from_tty)
 148      char *args;
 149      int from_tty;
 150 {
 151   monitor_open (args, &cpu32bug_cmds, from_tty);
 152 }
 153
 154 void
 155 _initialize_cpu32bug_rom ()
 156 {
 157   init_cpu32bug_cmds() ;
 158   init_monitor_ops (&cpu32bug_ops);
 159
 160   cpu32bug_ops.to_shortname = "cpu32bug";
 161   cpu32bug_ops.to_longname = "CPU32Bug monitor";
 162   cpu32bug_ops.to_doc = "Debug via the CPU32Bug monitor.\n\
 163 Specify the serial device it is connected to (e.g. /dev/ttya).";
 164   cpu32bug_ops.to_open = cpu32bug_open;
 165
 166   add_target (&cpu32bug_ops);
 167 }