gdb/sparclet-rom.c

   1 /* Remote target glue for the SPARC Sparclet ROM monitor.
   2    Copyright 1995, 1996 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
  21 #include "defs.h"
  22 #include "gdbcore.h"
  23 #include "target.h"
  24 #include "monitor.h"
  25 #include "serial.h"
  26 #include "srec.h"
  27 #include "symtab.h"
  28 #include "symfile.h" /* for generic_load */
  29 #include <time.h>
  30
  31 extern void report_transfer_performance PARAMS ((unsigned long, time_t, time_t));
  32
  33 static struct target_ops sparclet_ops;
  34
  35 static void sparclet_open PARAMS ((char *args, int from_tty));
  36
  37 /* This array of registers need to match the indexes used by GDB.
  38    This exists because the various ROM monitors use different strings
  39    than does GDB, and don't necessarily support all the registers
  40    either. So, typing "info reg sp" becomes a "r30".  */
  41
  42 /*PSR 0x00000080  impl ver icc AW LE EE EC EF PIL S PS ET CWP  WIM
  43                 0x0  0x0 0x0  0  0  0  0  0 0x0 1  0  0 0x00 0x2
  44                                                              0000010
  45        INS        LOCALS       OUTS      GLOBALS
  46  0  0x00000000  0x00000000  0x00000000  0x00000000
  47  1  0x00000000  0x00000000  0x00000000  0x00000000
  48  2  0x00000000  0x00000000  0x00000000  0x00000000
  49  3  0x00000000  0x00000000  0x00000000  0x00000000
  50  4  0x00000000  0x00000000  0x00000000  0x00000000
  51  5  0x00000000  0x00001000  0x00000000  0x00000000
  52  6  0x00000000  0x00000000  0x123f0000  0x00000000
  53  7  0x00000000  0x00000000  0x00000000  0x00000000
  54 pc:  0x12010000 0x00000000    unimp
  55 npc: 0x12010004 0x00001000    unimp     0x1000
  56 tbr: 0x00000000
  57 y:   0x00000000
  58 */
  59 /* these correspond to the offsets from tm-* files from config directories */
  60
  61 /* is wim part of psr?? */
  62 /* monitor wants lower case */
  63 static char *sparclet_regnames[NUM_REGS] = REGISTER_NAMES;
  64
  65
  66 /* Function: sparclet_supply_register
  67    Just returns with no action.
  68    This function is required, because parse_register_dump (monitor.c)
  69    expects to be able to call it.  If we don't supply something, it will
  70    call a null pointer and core-dump.  Since this function does not
  71    actually do anything, GDB will request the registers individually.  */
  72
  73 static void
  74 sparclet_supply_register (regname, regnamelen, val, vallen)
  75      char *regname;
  76      int regnamelen;
  77      char *val;
  78      int vallen;
  79 {
  80   return;
  81 }
  82
  83 static void
  84 sparclet_load (desc, file, hashmark)
  85      serial_t desc;
  86      char *file;
  87      int hashmark;
  88 {
  89   bfd *abfd;
  90   asection *s;
  91   int i;
  92   CORE_ADDR load_offset;
  93   time_t start_time, end_time;
  94   unsigned long data_count = 0;
  95
  96   /* enable user to specify address for downloading as 2nd arg to load */
  97
  98   i = sscanf(file, "%*s 0x%lx", &load_offset);
  99   if (i >= 1 )
 100     {
 101       char *p;
 102
 103       for (p = file; *p != '\000' && !isspace (*p); p++);
 104
 105       *p = '\000';
 106     }
 107   else
 108     load_offset = 0;
 109
 110   abfd = bfd_openr (file, 0);
 111   if (!abfd)
 112     {
 113       printf_filtered ("Unable to open file %s\n", file);
 114       return;
 115     }
 116
 117   if (bfd_check_format (abfd, bfd_object) == 0)
 118     {
 119       printf_filtered ("File is not an object file\n");
 120       return;
 121     }
 122
 123   start_time = time (NULL);
 124
 125   for (s = abfd->sections; s; s = s->next)
 126     if (s->flags & SEC_LOAD)
 127       {
 128         bfd_size_type section_size;
 129         bfd_vma vma;
 130
 131         vma = bfd_get_section_vma (abfd, s) + load_offset;
 132         section_size = bfd_section_size (abfd, s);
 133
 134         data_count += section_size;
 135
 136         printf_filtered ("%s\t: 0x%4x .. 0x%4x  ",
 137                          bfd_get_section_name (abfd, s), vma,
 138                          vma + section_size);
 139         gdb_flush (gdb_stdout);
 140
 141         monitor_printf ("load c r %x %x\r", vma, section_size);
 142
 143         monitor_expect ("load: loading ", NULL, 0);
 144         monitor_expect ("\r", NULL, 0);
 145
 146         for (i = 0; i < section_size; i += 2048)
 147           {
 148             int numbytes;
 149             char buf[2048];
 150
 151             numbytes = min (sizeof buf, section_size - i);
 152
 153             bfd_get_section_contents (abfd, s, buf, i, numbytes);
 154
 155             SERIAL_WRITE (desc, buf, numbytes);
 156
 157             if (hashmark)
 158               {
 159                 putchar_unfiltered ('#');
 160                 gdb_flush (gdb_stdout);
 161               }
 162           }                     /* Per-packet (or S-record) loop */
 163
 164         monitor_expect_prompt (NULL, 0);
 165
 166         putchar_unfiltered ('\n');
 167       }                         /* Loadable sections */
 168
 169   monitor_printf ("reg pc %x\r", bfd_get_start_address (abfd));
 170   monitor_expect_prompt (NULL, 0);
 171   monitor_printf ("reg npc %x\r", bfd_get_start_address (abfd) + 4);
 172   monitor_expect_prompt (NULL, 0);
 173
 174   monitor_printf ("run\r");
 175
 176   end_time = time (NULL);
 177
 178   if (hashmark)
 179     putchar_unfiltered ('\n');
 180
 181   report_transfer_performance (data_count, start_time, end_time);
 182
 183   pop_target ();
 184   push_remote_target (monitor_get_dev_name (), 1);
 185
 186   return_to_top_level (RETURN_QUIT);
 187 }
 188
 189 /* Define the monitor command strings. Since these are passed directly
 190    through to a printf style function, we may include formatting
 191    strings. We also need a CR or LF on the end.  */
 192
 193 /* need to pause the monitor for timing reasons, so slow it down */
 194
 195 static char *sparclet_inits[] = {"\n\r\r\n", NULL};
 196
 197 static struct monitor_ops sparclet_cmds ;
 198 static void init_sparclet_cmds(void)
 199 {
 200   sparclet_cmds.flags =   MO_CLR_BREAK_USES_ADDR |
 201     MO_HEX_PREFIX          |
 202     MO_NO_ECHO_ON_OPEN     |
 203     MO_NO_ECHO_ON_SETMEM   |
 204     MO_RUN_FIRST_TIME      |
 205     MO_GETMEM_READ_SINGLE ;     /* flags */
 206   sparclet_cmds.init =   sparclet_inits;                /* Init strings */
 207   sparclet_cmds.cont =   "cont\r";                      /* continue command */
 208   sparclet_cmds.step =   "step\r";                      /* single step */
 209   sparclet_cmds.stop =   "\r";                          /* break interrupts the program */
 210   sparclet_cmds.set_break =   "+bp %x\r";               /* set a breakpoint */
 211   sparclet_cmds.clr_break =  "-bp %x\r" ;               /* can't use "br" because only 2 hw bps are supported */
 212   sparclet_cmds.clr_all_break =   "-bp %x\r";           /* clear a breakpoint */
 213   "-bp\r" ;                     /* clear all breakpoints */
 214   sparclet_cmds.fill =   "fill %x -n %x -v %x -b\r";    /* fill (start length val) */
 215   /* can't use "fi" because it takes words, not bytes */
 216   /* ex [addr] [-n count] [-b|-s|-l]          default: ex cur -n 1 -b */
 217   sparclet_cmds.setmem.cmdb =     "ex %x -b\r%x\rq\r";  /* setmem.cmdb (addr, value) */
 218   sparclet_cmds.setmem.cmdw =     "ex %x -s\r%x\rq\r";  /* setmem.cmdw (addr, value) */
 219   sparclet_cmds.setmem.cmdl =     "ex %x -l\r%x\rq\r";  /* setmem.cmdl (addr, value) */
 220   sparclet_cmds.setmem.cmdll =     NULL;                /* setmem.cmdll (addr, value) */
 221   sparclet_cmds.setmem.resp_delim =     NULL; /*": " */ /* setmem.resp_delim */
 222   sparclet_cmds.setmem.term =     NULL; /*"? " */       /* setmem.term */
 223   sparclet_cmds.setmem.term_cmd =     NULL; /*"q\r" */  /* setmem.term_cmd */
 224   /* since the parsing of multiple bytes is difficult due to
 225      interspersed addresses, we'll only read 1 value at a time,
 226      even tho these can handle a count */
 227   /* we can use -n to set count to read, but may have to parse? */
 228   sparclet_cmds.getmem.cmdb =     "ex %x -n 1 -b\r";    /* getmem.cmdb (addr, #bytes) */
 229   sparclet_cmds.getmem.cmdw =     "ex %x -n 1 -s\r";    /* getmem.cmdw (addr, #swords) */
 230   sparclet_cmds.getmem.cmdl =     "ex %x -n 1 -l\r";    /* getmem.cmdl (addr, #words) */
 231   sparclet_cmds.getmem.cmdll =     NULL;                /* getmem.cmdll (addr, #dwords) */
 232   sparclet_cmds.getmem.resp_delim =     ": ";           /* getmem.resp_delim */
 233   sparclet_cmds.getmem.term =     NULL;                 /* getmem.term */
 234   sparclet_cmds.getmem.term_cmd =     NULL;             /* getmem.term_cmd */
 235   sparclet_cmds.setreg.cmd =     "reg %s 0x%x\r";       /* setreg.cmd (name, value) */
 236   sparclet_cmds.setreg.resp_delim =     NULL;           /* setreg.resp_delim */
 237   sparclet_cmds.setreg.term =     NULL;                 /* setreg.term */
 238   sparclet_cmds.setreg.term_cmd =  NULL ;               /* setreg.term_cmd */
 239   sparclet_cmds.getreg.cmd =     "reg %s\r";            /* getreg.cmd (name) */
 240   sparclet_cmds.getreg.resp_delim =     " ";            /* getreg.resp_delim */
 241   sparclet_cmds.getreg.term =     NULL;                 /* getreg.term */
 242   sparclet_cmds.getreg.term_cmd =     NULL;             /* getreg.term_cmd */
 243   sparclet_cmds.dump_registers =   "reg\r";             /* dump_registers */
 244   sparclet_cmds.register_pattern =   "\\(\\w+\\)=\\([0-9a-fA-F]+\\)";   /* register_pattern */
 245   sparclet_cmds.supply_register =   sparclet_supply_register;   /* supply_register */
 246   sparclet_cmds.load_routine =   sparclet_load;         /* load_routine */
 247   sparclet_cmds.load =   NULL;                          /* download command (srecs on console) */
 248   sparclet_cmds.loadresp =   NULL;                      /* load response */
 249   sparclet_cmds.prompt =   "monitor>";                  /* monitor command prompt */
 250   /* yikes!  gdb core dumps without this delimitor!! */
 251   sparclet_cmds.line_term =   "\r";                     /* end-of-command delimitor */
 252   sparclet_cmds.cmd_end =   NULL;                       /* optional command terminator */
 253   sparclet_cmds.target =   &sparclet_ops;               /* target operations */
 254   sparclet_cmds.stopbits =   SERIAL_1_STOPBITS;         /* number of stop bits */
 255   sparclet_cmds.regnames =   sparclet_regnames;         /* registers names */
 256   sparclet_cmds.magic =   MONITOR_OPS_MAGIC ;   /* magic */
 257 };
 258
 259 static void
 260 sparclet_open (args, from_tty)
 261      char *args;
 262      int from_tty;
 263 {
 264   monitor_open (args, &sparclet_cmds, from_tty);
 265 }
 266
 267 void
 268 _initialize_sparclet ()
 269 {
 270   int i;
 271   init_sparclet_cmds() ;
 272
 273   for (i = 0; i < NUM_REGS; i++)
 274     if (sparclet_regnames[i][0] == 'c' ||
 275         sparclet_regnames[i][0] == 'a')
 276       sparclet_regnames[i] = 0;         /* mon can't report c* or a* regs */
 277
 278   sparclet_regnames[0] = 0;             /* mon won't report %G0 */
 279
 280   init_monitor_ops (&sparclet_ops);
 281   sparclet_ops.to_shortname = "sparclet"; /* for the target command */
 282   sparclet_ops.to_longname = "SPARC Sparclet monitor";
 283   /* use SW breaks; target only supports 2 HW breakpoints */
 284   sparclet_ops.to_insert_breakpoint = memory_insert_breakpoint;
 285   sparclet_ops.to_remove_breakpoint = memory_remove_breakpoint;
 286
 287   sparclet_ops.to_doc =
 288     "Use a board running the Sparclet debug monitor.\n\
 289 Specify the serial device it is connected to (e.g. /dev/ttya).";
 290
 291   sparclet_ops.to_open = sparclet_open;
 292   add_target (&sparclet_ops);
 293 }
 294