gdb/mac-nat.c

   1 /* Target-vector operations for controlling Mac applications, for GDB.
   2    Copyright (C) 1995 Free Software Foundation, Inc.
   3    Written by Stan Shebs.  Contributed by Cygnus Support.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without eve nthe implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 /* Note that because all the available Mac compilers are ANSI or very
  22    close, and this is a native-only file, the code may be purely ANSI.  */
  23
  24 #include "defs.h"
  25 #include "frame.h"              /* required by inferior.h */
  26 #include "inferior.h"
  27 #include "target.h"
  28 #include "wait.h"
  29 #include "gdbcore.h"
  30 #include "command.h"
  31 #include <signal.h>
  32 #include <sys/types.h>
  33 #include <fcntl.h>
  34 #include "buildsym.h"
  35 #include "gdb_string.h"
  36 #include "gdbthread.h"
  37 #include "gdbcmd.h"
  38
  39 #include <Processes.h>
  40
  41 /* We call the functions "child_..." rather than "mac_..." so no one
  42    is tempted to try to link this with other native-only code.  */
  43
  44 /* Forward declaration */
  45
  46 extern struct target_ops child_ops;
  47
  48 static void child_stop PARAMS ((void));
  49
  50 static void
  51 child_fetch_inferior_registers (int r)
  52 {
  53   if (r < 0)
  54     {
  55       for (r = 0; r < NUM_REGS; r++)
  56         child_fetch_inferior_registers (r);
  57     }
  58   else
  59     {
  60       supply_register (r, 0);
  61     }
  62 }
  63
  64 static void
  65 child_store_inferior_registers (int r)
  66 {
  67   if (r < 0)
  68     {
  69       for (r = 0; r < NUM_REGS; r++)
  70         child_store_inferior_registers (r);
  71     }
  72   else
  73     {
  74       read_register_gen (r, 0);
  75     }
  76 }
  77
  78 static int
  79 child_wait (int pid, struct target_waitstatus *ourstatus)
  80 {
  81 }
  82
  83 /* Attach to process PID, then initialize for debugging it.  */
  84
  85 static void
  86 child_attach (args, from_tty)
  87      char *args;
  88      int from_tty;
  89 {
  90   ProcessSerialNumber psn;
  91   ProcessInfoRec inforec;
  92   Str31 name;
  93   FSSpecPtr fsspec;
  94   OSType code;
  95   int pid;
  96   char *exec_file;
  97
  98   if (!args)
  99     error_no_arg ("process-id to attach");
 100
 101   pid = atoi (args);
 102
 103   psn.highLongOfPSN = 0;
 104   psn.lowLongOfPSN = pid;
 105
 106   inforec.processInfoLength = sizeof(ProcessInfoRec);
 107   inforec.processName = name;
 108   inforec.processAppSpec = fsspec;
 109
 110   if (GetProcessInformation (&psn, &inforec) == noErr)
 111     {
 112       if (from_tty)
 113         {
 114           exec_file = (char *) get_exec_file (0);
 115
 116           if (exec_file)
 117             printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
 118                                target_pid_to_str (pid));
 119           else
 120             printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
 121
 122           gdb_flush (gdb_stdout);
 123         }
 124       /* Do we need to do anything special? */
 125       attach_flag = 1;
 126       inferior_pid = pid;
 127       push_target (&child_ops);
 128     }
 129 }
 130
 131 static void
 132 child_detach (args, from_tty)
 133      char *args;
 134      int from_tty;
 135 {
 136   char *exec_file;
 137
 138   if (from_tty)
 139     {
 140       exec_file = get_exec_file (0);
 141       if (exec_file == 0)
 142         exec_file = "";
 143       printf_unfiltered ("Detaching from program: %s %s\n", exec_file,
 144                          target_pid_to_str (inferior_pid));
 145       gdb_flush (gdb_stdout);
 146     }
 147   inferior_pid = 0;
 148   unpush_target (&child_ops);
 149 }
 150
 151 /* Print status information about what we're accessing.  */
 152
 153 static void
 154 child_files_info (ignore)
 155      struct target_ops *ignore;
 156 {
 157   printf_unfiltered ("\tUsing the running image of %s %s.\n",
 158       attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
 159 }
 160
 161 /* ARGSUSED */
 162 static void
 163 child_open (arg, from_tty)
 164      char *arg;
 165      int from_tty;
 166 {
 167   error ("Use the \"run\" command to start a Mac application.");
 168 }
 169
 170 /* Start an inferior Mac program and sets inferior_pid to its pid.
 171    EXEC_FILE is the file to run.
 172    ALLARGS is a string containing the arguments to the program.
 173    ENV is the environment vector to pass.  Errors reported with error().  */
 174
 175 static void
 176 child_create_inferior (exec_file, allargs, env)
 177      char *exec_file;
 178      char *allargs;
 179      char **env;
 180 {
 181   LaunchParamBlockRec launchparms;
 182   FSSpec fsspec;
 183   OSErr launch_err;
 184
 185   if (!exec_file)
 186     {
 187       error ("No executable specified, use `target exec'.\n");
 188     }
 189
 190   launchparms.launchBlockID = extendedBlock;
 191   launchparms.launchEPBLength = extendedBlockLen;
 192   launchparms.launchFileFlags = 0;
 193   launchparms.launchControlFlags = launchContinue | launchNoFileFlags;
 194   fsspec.vRefNum = 0;
 195   fsspec.parID = 0;
 196   strcpy(fsspec.name + 1, exec_file);
 197   fsspec.name[0] = strlen(exec_file);
 198   launchparms.launchAppSpec = &fsspec;
 199   launchparms.launchAppParameters = nil;
 200
 201   launch_err = LaunchApplication (&launchparms);
 202
 203   if (launch_err == 999 /*memFullErr*/)
 204     {
 205       error ("Not enough memory to launch %s\n", exec_file);
 206     }
 207   else if (launch_err != noErr)
 208     {
 209       error ("Error launching %s, code %d\n", exec_file, launch_err);
 210     }
 211
 212   inferior_pid = launchparms.launchProcessSN.lowLongOfPSN;
 213   /* FIXME be sure that high long of PSN is 0 */
 214
 215   push_target (&child_ops);
 216   init_wait_for_inferior ();
 217   clear_proceed_status ();
 218
 219 /*  proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_0, 0);  */
 220 }
 221
 222 static void
 223 child_mourn_inferior ()
 224 {
 225   unpush_target (&child_ops);
 226   generic_mourn_inferior ();
 227 }
 228
 229 static void
 230 child_stop ()
 231 {
 232 }
 233
 234 int
 235 child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
 236                  int write, struct target_ops *target)
 237 {
 238   int i;
 239
 240   for (i = 0; i < len; ++i)
 241     {
 242       if (write)
 243         {
 244           ((char *) memaddr)[i] = myaddr[i];
 245         }
 246       else
 247         {
 248           myaddr[i] = ((char *) memaddr)[i];
 249         }
 250     }
 251   return len;
 252 }
 253
 254 void
 255 child_kill_inferior (void)
 256 {
 257 }
 258
 259 void
 260 child_resume (int pid, int step, enum target_signal signal)
 261 {
 262 }
 263
 264 static void
 265 child_prepare_to_store ()
 266 {
 267   /* Do nothing, since we can store individual regs */
 268 }
 269
 270 static int
 271 child_can_run ()
 272 {
 273   return 1;
 274 }
 275
 276 static void
 277 child_close ()
 278 {
 279 }
 280
 281 static void
 282 info_proc (args, from_tty)
 283      char *args;
 284      int from_tty;
 285 {
 286   ProcessSerialNumber psn;
 287   ProcessInfoRec inforec;
 288   Str31 name;
 289   FSSpecPtr fsspec;
 290   OSType code;
 291
 292   /* Eventually use args, but not right now. */
 293
 294   psn.highLongOfPSN = 0;
 295   psn.lowLongOfPSN = kNoProcess;
 296
 297   inforec.processInfoLength = sizeof(ProcessInfoRec);
 298   inforec.processName = name;
 299   inforec.processAppSpec = fsspec;
 300
 301   printf_filtered ("Process Name                     Sgnt Type    PSN   Loc Size FreeMem Time\n");
 302
 303   while (GetNextProcess (&psn) == noErr)
 304     {
 305       if (GetProcessInformation (&psn, &inforec) == noErr)
 306         {
 307           name[name[0] + 1] = '\0';
 308           printf_filtered ("%-32.32s", name + 1);
 309           code = inforec.processSignature;
 310           printf_filtered (" %c%c%c%c",
 311                            (code >> 24) & 0xff,
 312                            (code >> 16) & 0xff,
 313                            (code >>  8) & 0xff,
 314                            (code >>  0) & 0xff);
 315           code = inforec.processType;
 316           printf_filtered (" %c%c%c%c",
 317                            (code >> 24) & 0xff,
 318                            (code >> 16) & 0xff,
 319                            (code >>  8) & 0xff,
 320                            (code >>  0) & 0xff);
 321           if (psn.highLongOfPSN == 0)
 322             printf_filtered (" %9d", psn.lowLongOfPSN);
 323           else
 324             printf_filtered (" %9d,%9d\n",
 325                              psn.highLongOfPSN, psn.lowLongOfPSN);
 326           printf_filtered (" 0x%x", inforec.processLocation);
 327           printf_filtered (" %9d", inforec.processSize);
 328           printf_filtered (" %9d", inforec.processFreeMem);
 329           printf_filtered (" %9d", inforec.processActiveTime);
 330           printf_filtered ("\n");
 331         }
 332     }
 333 }
 334
 335 struct target_ops child_ops =
 336 {
 337   "mac",                        /* to_shortname */
 338   "MacOS application",          /* to_longname */
 339   "MacOS application (started by the \"run\" command).",        /* to_doc */
 340   child_open,                   /* to_open */
 341   child_close,                  /* to_close */
 342   child_attach,                 /* to_attach */
 343   child_detach,                 /* to_detach */
 344   child_resume,                 /* to_resume */
 345   child_wait,                   /* to_wait */
 346   child_fetch_inferior_registers,/* to_fetch_registers */
 347   child_store_inferior_registers,/* to_store_registers */
 348   child_prepare_to_store,       /* to_prepare_to_store */
 349   child_xfer_memory,            /* to_xfer_memory */
 350   child_files_info,             /* to_files_info */
 351   memory_insert_breakpoint,     /* to_insert_breakpoint */
 352   memory_remove_breakpoint,     /* to_remove_breakpoint */
 353   0,                            /* to_terminal_init */
 354   0,                            /* to_terminal_inferior */
 355   0,                            /* to_terminal_ours_for_output */
 356   0,                            /* to_terminal_ours */
 357   0,                            /* to_terminal_info */
 358   child_kill_inferior,          /* to_kill */
 359   0,                            /* to_load */
 360   0,                            /* to_lookup_symbol */
 361   child_create_inferior,        /* to_create_inferior */
 362   child_mourn_inferior,         /* to_mourn_inferior */
 363   child_can_run,                /* to_can_run */
 364   0,                            /* to_notice_signals */
 365   0,                            /* to_thread_alive */
 366   child_stop,                   /* to_stop */
 367   process_stratum,              /* to_stratum */
 368   0,                            /* to_next */
 369   1,                            /* to_has_all_memory */
 370   1,                            /* to_has_memory */
 371   1,                            /* to_has_stack */
 372   1,                            /* to_has_registers */
 373   1,                            /* to_has_execution */
 374   0,                            /* to_sections */
 375   0,                            /* to_sections_end */
 376   OPS_MAGIC                     /* to_magic */
 377 };
 378
 379 void
 380 _initialize_mac_nat ()
 381 {
 382   add_target (&child_ops);
 383
 384   add_info ("proc", info_proc,
 385             "Show information about processes.");
 386 }