gdb/w89k-rom.c

   1 /* Remote target glue for the WinBond ROM monitor running on the "Cougar"
   2    W89k eval board.
   3
   4    Copyright 1995 Free Software Foundation, Inc.
   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 #include "xmodem.h"
  29
  30
  31 static void w89k_open (char *args, int from_tty);
  32
  33 /*
  34  * this array of registers need to match the indexes used by GDB. The
  35  * whole reason this exists is cause the various ROM monitors use
  36  * different strings than GDB does, and doesn't support all the
  37  * registers either. So, typing "info reg sp" becomes a "r30".
  38  */
  39
  40 static char *w89k_regnames[NUM_REGS] =
  41 {
  42   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
  43   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
  44   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
  45   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
  46   "SAR", "PC", NULL, NULL, NULL, "EIEM", "IIR", "IVA",
  47   "IOR", "IPSW", NULL, NULL, NULL, NULL, NULL,
  48   NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  49   "CCR", NULL, NULL, "TR0", "TR1",
  50 };
  51
  52 static void
  53 w89k_supply_register (char *regname, int regnamelen, char *val, int vallen)
  54 {
  55   int numregs;
  56   int regno;
  57
  58   numregs = 1;
  59   regno = -1;
  60
  61   if (regnamelen == 2)
  62     switch (regname[0])
  63       {
  64       case 'r':
  65         numregs = 4;
  66         switch (regname[1])
  67           {
  68           case '0':
  69             regno = R0_REGNUM;
  70             break;
  71           case '4':
  72             regno = R0_REGNUM + 4;
  73             break;
  74           case '8':
  75             regno = R0_REGNUM + 8;
  76             break;
  77           }
  78         break;
  79       case 'P':
  80         if (regname[1] == 'C')
  81           regno = PC_REGNUM;
  82         break;
  83       }
  84   else if (regnamelen == 3)
  85     switch (regname[0])
  86       {
  87       case 'r':
  88         numregs = 4;
  89         if (regname[1] == '1' && regname[2] == '2')
  90           regno = R0_REGNUM + 12;
  91         else if (regname[1] == '1' && regname[2] == '6')
  92           regno = R0_REGNUM + 16;
  93         else if (regname[1] == '2' && regname[2] == '0')
  94           regno = R0_REGNUM + 20;
  95         else if (regname[1] == '2' && regname[2] == '4')
  96           regno = R0_REGNUM + 24;
  97         else if (regname[1] == '2' && regname[2] == '8')
  98           regno = R0_REGNUM + 28;
  99         break;
 100       case 'R':
 101         if (regname[1] == 'C' && regname[2] == 'R')
 102           regno = RCR_REGNUM;
 103         break;
 104       case 'C':
 105         if (regname[1] == 'C' && regname[2] == 'R')
 106           regno = CCR_REGNUM;
 107         break;
 108       case 'S':
 109         if (regname[1] == 'A' && regname[2] == 'R')
 110           regno = SAR_REGNUM;
 111         break;
 112       case 'I':
 113         if (regname[1] == 'I' && regname[2] == 'R')
 114           regno = IIR_REGNUM;
 115         else if (regname[1] == 'O' && regname[2] == 'R')
 116           regno = IOR_REGNUM;
 117         break;
 118       case 'T':
 119         numregs = 4;
 120         if (regname[1] == 'R')
 121           if (regname[2] == '0')
 122             regno = TR0_REGNUM;
 123           else if (regname[2] == '4')
 124             regno = TR0_REGNUM + 4;
 125         break;
 126       }
 127   else if (regnamelen == 4)
 128     switch (regname[0])
 129       {
 130       case 'E':
 131         if (regname[1] == 'I')
 132           if (regname[2] == 'E' && regname[3] == 'M')
 133             regno = EIEM_REGNUM;
 134         break;
 135       case 'I':
 136         if (regname[1] == 'P' && regname[2] == 'S' && regname[3] == 'W')
 137           regno = IPSW_REGNUM;
 138         break;
 139       }
 140   else if (regnamelen == 5)
 141     switch (regname[0])
 142       {
 143       case 'I':
 144         if (regname[1] == 'A'
 145             && regname[2] == 'O'
 146             && regname[3] == 'Q'
 147             && regname[4] == 'B')
 148           regno = PCOQ_TAIL_REGNUM;
 149         break;
 150       }
 151
 152   if (regno >= 0)
 153     while (numregs-- > 0)
 154       val = monitor_supply_register (regno++, val);
 155 }
 156
 157 static int hashmark = 1;        /* flag set by "set hash" */
 158
 159 extern struct monitor_ops w89k_cmds;    /* fwd decl */
 160
 161 static void
 162 w89k_load (serial_t desc, char *file, int hashmark)
 163 {
 164   bfd *abfd;
 165   asection *s;
 166   char *buffer;
 167   int i;
 168
 169   buffer = alloca (XMODEM_PACKETSIZE);
 170
 171   abfd = bfd_openr (file, 0);
 172   if (!abfd)
 173     {
 174       printf_filtered ("Unable to open file %s\n", file);
 175       return;
 176     }
 177
 178   if (bfd_check_format (abfd, bfd_object) == 0)
 179     {
 180       printf_filtered ("File is not an object file\n");
 181       return;
 182     }
 183
 184   for (s = abfd->sections; s; s = s->next)
 185     if (s->flags & SEC_LOAD)
 186       {
 187         bfd_size_type section_size;
 188
 189         printf_filtered ("%s\t: 0x%4x .. 0x%4x  ", s->name, s->vma,
 190                          s->vma + s->_raw_size);
 191         gdb_flush (gdb_stdout);
 192
 193         monitor_printf (w89k_cmds.load, s->vma);
 194         if (w89k_cmds.loadresp)
 195           monitor_expect (w89k_cmds.loadresp, NULL, 0);
 196
 197         xmodem_init_xfer (desc);
 198
 199         section_size = bfd_section_size (abfd, s);
 200
 201         for (i = 0; i < section_size; i += XMODEM_DATASIZE)
 202           {
 203             int numbytes;
 204
 205             numbytes = min (XMODEM_DATASIZE, section_size - i);
 206
 207             bfd_get_section_contents (abfd, s, buffer + XMODEM_DATAOFFSET, i,
 208                                       numbytes);
 209
 210             xmodem_send_packet (desc, buffer, numbytes, hashmark);
 211
 212             if (hashmark)
 213               {
 214                 putchar_unfiltered ('#');
 215                 gdb_flush (gdb_stdout);
 216               }
 217           }                     /* Per-packet (or S-record) loop */
 218
 219         xmodem_finish_xfer (desc);
 220
 221         monitor_expect_prompt (NULL, 0);
 222
 223         putchar_unfiltered ('\n');
 224       }                         /* Loadable sections */
 225
 226   if (hashmark)
 227     putchar_unfiltered ('\n');
 228 }
 229
 230 /*
 231  * Define the monitor command strings. Since these are passed directly
 232  * through to a printf style function, we need can include formatting
 233  * strings. We also need a CR or LF on the end.
 234  */
 235
 236 static struct target_ops w89k_ops;
 237
 238 static char *w89k_inits[] =
 239 {"\n", NULL};
 240
 241 static struct monitor_ops w89k_cmds;
 242 static void
 243 init_w89k_cmds (void)
 244 {
 245   w89k_cmds.flags = MO_GETMEM_NEEDS_RANGE | MO_FILL_USES_ADDR;  /* flags */
 246   w89k_cmds.init = w89k_inits;  /* Init strings */
 247   w89k_cmds.cont = "g\n";       /* continue command */
 248   w89k_cmds.step = "t\n";       /* single step */
 249   w89k_cmds.stop = "\003";      /* Interrupt char (^C) */
 250   w89k_cmds.set_break = "bp %x\n";      /* set a breakpoint */
 251   w89k_cmds.clr_break = "bc %x\n";      /* clear a breakpoint */
 252   w89k_cmds.clr_all_break = "bc *\n";   /* clear all breakpoints */
 253   w89k_cmds.fill = "f %x %x %x\n";      /* memory fill cmd */
 254   w89k_cmds.setmem.cmdb = "eb %x %x\n";         /* setmem.cmdb (addr, value) */
 255   w89k_cmds.setmem.cmdw = "eh %x %x\n";         /* setmem.cmdw (addr, value) */
 256   w89k_cmds.setmem.cmdl = "ew %x %x\n";         /* setmem.cmdl (addr, value) */
 257   w89k_cmds.setmem.cmdll = NULL;        /* setmem.cmdll (addr, value) */
 258   w89k_cmds.setmem.resp_delim = NULL;   /* setreg.resp_delim */
 259   w89k_cmds.setmem.term = NULL; /* setreg.term */
 260   w89k_cmds.setmem.term_cmd = NULL;     /* setreg.term_cmd */
 261   w89k_cmds.getmem.cmdb = "db %x %x\n";         /* getmem.cmdb (startaddr, endaddr) */
 262   w89k_cmds.getmem.cmdw = "dh %x %x\n";         /* getmem.cmdw (startaddr, endaddr) */
 263   w89k_cmds.getmem.cmdl = "dw %x %x\n";         /* getmem.cmdl (startaddr, endaddr) */
 264   w89k_cmds.getmem.cmdll = NULL;        /* getmem.cmdll (startaddr, endaddr) */
 265   w89k_cmds.getmem.resp_delim = "  ";   /* getmem.resp_delim */
 266   w89k_cmds.getmem.term = NULL; /* getmem.term */
 267   w89k_cmds.getmem.term_cmd = NULL;     /* getmem.term_cmd */
 268   w89k_cmds.setreg.cmd = "r %s %x\n";   /* setreg.cmd (name, value) */
 269   w89k_cmds.setreg.resp_delim = NULL;   /* setreg.resp_delim */
 270   w89k_cmds.setreg.term = NULL; /* setreg.term */
 271   w89k_cmds.setreg.term_cmd = NULL;     /* setreg.term_cmd */
 272   w89k_cmds.getreg.cmd = "r %s\n";      /* getreg.cmd (name) */
 273   w89k_cmds.getreg.resp_delim = "\r";   /* getreg.resp_delim */
 274   w89k_cmds.getreg.term = NULL; /* getreg.term */
 275   w89k_cmds.getreg.term_cmd = NULL;     /* getreg.term_cmd */
 276   w89k_cmds.dump_registers = "r\n";     /* dump_registers */
 277   w89k_cmds.register_pattern = "\\(\\w+\\)\\( +[0-9a-fA-F]+\\b\\)+";
 278   w89k_cmds.supply_register = w89k_supply_register;     /* supply_register */
 279   w89k_cmds.load_routine = w89k_load;   /* load routine */
 280   w89k_cmds.load = "u %x\n";    /* download command */
 281   w89k_cmds.loadresp = "\021";  /* load response (^Q) */
 282   w89k_cmds.prompt = "ROM>";    /* monitor command prompt */
 283   w89k_cmds.line_term = "\n";   /* end-of-line terminator */
 284   w89k_cmds.cmd_end = NULL;     /* optional command terminator */
 285   w89k_cmds.target = &w89k_ops; /* target operations */
 286   w89k_cmds.stopbits = SERIAL_1_STOPBITS;       /* number of stop bits */
 287   w89k_cmds.regnames = w89k_regnames;   /* register names */
 288   w89k_cmds.magic = MONITOR_OPS_MAGIC;  /* magic */
 289 }                               /* init_w89k_cmds */
 290
 291 static void
 292 w89k_open (char *args, int from_tty)
 293 {
 294   monitor_open (args, &w89k_cmds, from_tty);
 295 }
 296
 297 void
 298 _initialize_w89k (void)
 299 {
 300   init_w89k_cmds ();
 301   init_monitor_ops (&w89k_ops);
 302
 303   w89k_ops.to_shortname = "w89k";
 304   w89k_ops.to_longname = "WinBond's debug monitor for the W89k Eval board";
 305   w89k_ops.to_doc = "Debug on a WinBond W89K eval board.\n\
 306 Specify the serial device it is connected to (e.g. /dev/ttya).";
 307   w89k_ops.to_open = w89k_open;
 308
 309   add_target (&w89k_ops);
 310 }