gdb/remote-hms.c

   1 /* Remote debugging interface for Hitachi HMS Monitor Version 1.0
   2    Copyright 1995,1999 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.  Written by Steve Chamberlain
   4    (sac@cygnus.com).
   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,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #include "defs.h"
  24 #include "gdbcore.h"
  25 #include "target.h"
  26 #include "monitor.h"
  27 #include "serial.h"
  28
  29 static void hms_open (char *args, int from_tty);
  30 static void
  31 hms_supply_register (char *regname, int regnamelen, char *val, int vallen)
  32 {
  33   int regno;
  34
  35   if (regnamelen != 2)
  36     return;
  37   if (regname[0] != 'P')
  38     return;
  39   /* We scan off all the registers in one go */
  40
  41   val = monitor_supply_register (PC_REGNUM, val);
  42   /* Skip the ccr string */
  43   while (*val != '=' && *val)
  44     val++;
  45
  46   val = monitor_supply_register (CCR_REGNUM, val + 1);
  47
  48   /* Skip up to rest of regs */
  49   while (*val != '=' && *val)
  50     val++;
  51
  52   for (regno = 0; regno < 7; regno++)
  53     {
  54       val = monitor_supply_register (regno, val + 1);
  55     }
  56 }
  57
  58 /*
  59  * This array of registers needs to match the indexes used by GDB. The
  60  * whole reason this exists is because the various ROM monitors use
  61  * different names than GDB does, and don't support all the
  62  * registers either. So, typing "info reg sp" becomes a "r30".
  63  */
  64
  65 static char *hms_regnames[NUM_REGS] =
  66 {
  67   "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "CCR", "PC"
  68 };
  69
  70 /*
  71  * Define the monitor command strings. Since these are passed directly
  72  * through to a printf style function, we need can include formatting
  73  * strings. We also need a CR or LF on the end.
  74  */
  75
  76 static struct target_ops hms_ops;
  77
  78 static char *hms_inits[] =
  79 {"\003",                        /* Resets the prompt, and clears repeated cmds */
  80  NULL};
  81
  82 static struct monitor_ops hms_cmds;
  83
  84 static void
  85 init_hms_cmds (void)
  86 {
  87   hms_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_FILL_USES_ADDR | MO_GETMEM_NEEDS_RANGE;
  88   hms_cmds.init = hms_inits;    /* Init strings */
  89   hms_cmds.cont = "g\r";        /* continue command */
  90   hms_cmds.step = "s\r";        /* single step */
  91   hms_cmds.stop = "\003";       /* ^C interrupts the program */
  92   hms_cmds.set_break = "b %x\r";        /* set a breakpoint */
  93   hms_cmds.clr_break = "b - %x\r";      /* clear a breakpoint */
  94   hms_cmds.clr_all_break = "b -\r";     /* clear all breakpoints */
  95   hms_cmds.fill = "f %x %x %x\r";       /* fill (start end val) */
  96   hms_cmds.setmem.cmdb = "m.b %x=%x\r";         /* setmem.cmdb (addr, value) */
  97   hms_cmds.setmem.cmdw = "m.w %x=%x\r";         /* setmem.cmdw (addr, value) */
  98   hms_cmds.setmem.cmdl = NULL;  /* setmem.cmdl (addr, value) */
  99   hms_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
 100   hms_cmds.setmem.resp_delim = NULL;    /* setreg.resp_delim */
 101   hms_cmds.setmem.term = NULL;  /* setreg.term */
 102   hms_cmds.setmem.term_cmd = NULL;      /* setreg.term_cmd */
 103   hms_cmds.getmem.cmdb = "m.b %x %x\r";         /* getmem.cmdb (addr, addr) */
 104   hms_cmds.getmem.cmdw = "m.w %x %x\r";         /* getmem.cmdw (addr, addr) */
 105   hms_cmds.getmem.cmdl = NULL;  /* getmem.cmdl (addr, addr) */
 106   hms_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, addr) */
 107   hms_cmds.getmem.resp_delim = ": ";    /* getmem.resp_delim */
 108   hms_cmds.getmem.term = ">";   /* getmem.term */
 109   hms_cmds.getmem.term_cmd = "\003";    /* getmem.term_cmd */
 110   hms_cmds.setreg.cmd = "r %s=%x\r";    /* setreg.cmd (name, value) */
 111   hms_cmds.setreg.resp_delim = NULL;    /* setreg.resp_delim */
 112   hms_cmds.setreg.term = NULL;  /* setreg.term */
 113   hms_cmds.setreg.term_cmd = NULL;      /* setreg.term_cmd */
 114   hms_cmds.getreg.cmd = "r %s\r";       /* getreg.cmd (name) */
 115   hms_cmds.getreg.resp_delim = " (";    /* getreg.resp_delim */
 116   hms_cmds.getreg.term = ":";   /* getreg.term */
 117   hms_cmds.getreg.term_cmd = "\003";    /* getreg.term_cmd */
 118   hms_cmds.dump_registers = "r\r";      /* dump_registers */
 119   hms_cmds.register_pattern = "\\(\\w+\\)=\\([0-9a-fA-F]+\\)";  /* register_pattern */
 120   hms_cmds.supply_register = hms_supply_register;       /* supply_register */
 121   hms_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
 122   hms_cmds.load = "tl\r";       /* download command */
 123   hms_cmds.loadresp = NULL;     /* load response */
 124   hms_cmds.prompt = ">";        /* monitor command prompt */
 125   hms_cmds.line_term = "\r";    /* end-of-command delimitor */
 126   hms_cmds.cmd_end = NULL;      /* optional command terminator */
 127   hms_cmds.target = &hms_ops;   /* target operations */
 128   hms_cmds.stopbits = SERIAL_1_STOPBITS;        /* number of stop bits */
 129   hms_cmds.regnames = hms_regnames;     /* registers names */
 130   hms_cmds.magic = MONITOR_OPS_MAGIC;   /* magic */
 131 }                               /* init_hms-cmds */
 132
 133 static void
 134 hms_open (char *args, int from_tty)
 135 {
 136   monitor_open (args, &hms_cmds, from_tty);
 137 }
 138
 139 int write_dos_tick_delay;
 140
 141 void
 142 _initialize_remote_hms (void)
 143 {
 144   init_hms_cmds ();
 145   init_monitor_ops (&hms_ops);
 146
 147   hms_ops.to_shortname = "hms";
 148   hms_ops.to_longname = "Hitachi Microsystems H8/300 debug monitor";
 149   hms_ops.to_doc = "Debug via the HMS monitor.\n\
 150 Specify the serial device it is connected to (e.g. /dev/ttya).";
 151   hms_ops.to_open = hms_open;
 152   /* By trial and error I've found that this delay doesn't break things */
 153   write_dos_tick_delay = 1;
 154   add_target (&hms_ops);
 155 }