gdb/mac-nat.c

   1 /* Target-vector operations for controlling Mac applications, for GDB.
   2    Copyright 1995, 2001 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,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 /* Note that because all the available Mac compilers are ANSI or very
  23    close, and this is a native-only file, the code may be purely ANSI.  */
  24
  25 #include "defs.h"
  26 #include "frame.h"              /* required by inferior.h */
  27 #include "inferior.h"
  28 #include "target.h"
  29 #include "gdb_wait.h"
  30 #include "gdbcore.h"
  31 #include "command.h"
  32 #include <signal.h>
  33 #include <sys/types.h>
  34 #include <fcntl.h>
  35 #include "buildsym.h"
  36 #include "gdb_string.h"
  37 #include "gdbthread.h"
  38 #include "gdbcmd.h"
  39 #include "regcache.h"
  40
  41 #include <Processes.h>
  42
  43 /* We call the functions "child_..." rather than "mac_..." so no one
  44    is tempted to try to link this with other native-only code.  */
  45
  46 /* Forward declaration */
  47
  48 extern struct target_ops child_ops;
  49
  50 static void child_stop (void);
  51
  52 static void
  53 child_fetch_inferior_registers (int r)
  54 {
  55   if (r < 0)
  56     {
  57       for (r = 0; r < NUM_REGS; r++)
  58         child_fetch_inferior_registers (r);
  59     }
  60   else
  61     {
  62       supply_register (r, 0);
  63     }
  64 }
  65
  66 static void
  67 child_store_inferior_registers (int r)
  68 {
  69   if (r < 0)
  70     {
  71       for (r = 0; r < NUM_REGS; r++)
  72         child_store_inferior_registers (r);
  73     }
  74   else
  75     {
  76       read_register_gen (r, 0);
  77     }
  78 }
  79
  80 static int
  81 child_wait (int pid, struct target_waitstatus *ourstatus)
  82 {
  83 }
  84
  85 /* Attach to process PID, then initialize for debugging it.  */
  86
  87 static void
  88 child_attach (char *args, 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 (char *args, int from_tty)
 133 {
 134   char *exec_file;
 135
 136   if (from_tty)
 137     {
 138       exec_file = get_exec_file (0);
 139       if (exec_file == 0)
 140         exec_file = "";
 141       printf_unfiltered ("Detaching from program: %s %s\n", exec_file,
 142                          target_pid_to_str (inferior_pid));
 143       gdb_flush (gdb_stdout);
 144     }
 145   inferior_pid = 0;
 146   unpush_target (&child_ops);
 147 }
 148
 149 /* Print status information about what we're accessing.  */
 150
 151 static void
 152 child_files_info (struct target_ops *ignore)
 153 {
 154   printf_unfiltered ("\tUsing the running image of %s %s.\n",
 155       attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
 156 }
 157
 158 /* ARGSUSED */
 159 static void
 160 child_open (char *arg, int from_tty)
 161 {
 162   error ("Use the \"run\" command to start a Mac application.");
 163 }
 164
 165 /* Start an inferior Mac program and sets inferior_pid to its pid.
 166    EXEC_FILE is the file to run.
 167    ALLARGS is a string containing the arguments to the program.
 168    ENV is the environment vector to pass.  Errors reported with error().  */
 169
 170 static void
 171 child_create_inferior (char *exec_file, char *allargs, char **env)
 172 {
 173   LaunchParamBlockRec launchparms;
 174   FSSpec fsspec;
 175   OSErr launch_err;
 176
 177   if (!exec_file)
 178     {
 179       error ("No executable specified, use `target exec'.\n");
 180     }
 181
 182   launchparms.launchBlockID = extendedBlock;
 183   launchparms.launchEPBLength = extendedBlockLen;
 184   launchparms.launchFileFlags = 0;
 185   launchparms.launchControlFlags = launchContinue | launchNoFileFlags;
 186   fsspec.vRefNum = 0;
 187   fsspec.parID = 0;
 188   strcpy (fsspec.name + 1, exec_file);
 189   fsspec.name[0] = strlen (exec_file);
 190   launchparms.launchAppSpec = &fsspec;
 191   launchparms.launchAppParameters = nil;
 192
 193   launch_err = LaunchApplication (&launchparms);
 194
 195   if (launch_err == 999 /*memFullErr */ )
 196     {
 197       error ("Not enough memory to launch %s\n", exec_file);
 198     }
 199   else if (launch_err != noErr)
 200     {
 201       error ("Error launching %s, code %d\n", exec_file, launch_err);
 202     }
 203
 204   inferior_pid = launchparms.launchProcessSN.lowLongOfPSN;
 205   /* FIXME be sure that high long of PSN is 0 */
 206
 207   push_target (&child_ops);
 208   init_wait_for_inferior ();
 209   clear_proceed_status ();
 210
 211 /*  proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);  */
 212 }
 213
 214 static void
 215 child_mourn_inferior (void)
 216 {
 217   unpush_target (&child_ops);
 218   generic_mourn_inferior ();
 219 }
 220
 221 static void
 222 child_stop (void)
 223 {
 224 }
 225
 226 int
 227 child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
 228                    int write, struct target_ops *target)
 229 {
 230   int i;
 231
 232   for (i = 0; i < len; ++i)
 233     {
 234       if (write)
 235         {
 236           ((char *) memaddr)[i] = myaddr[i];
 237         }
 238       else
 239         {
 240           myaddr[i] = ((char *) memaddr)[i];
 241         }
 242     }
 243   return len;
 244 }
 245
 246 void
 247 child_kill_inferior (void)
 248 {
 249 }
 250
 251 void
 252 child_resume (int pid, int step, enum target_signal signal)
 253 {
 254 }
 255
 256 static void
 257 child_prepare_to_store (void)
 258 {
 259   /* Do nothing, since we can store individual regs */
 260 }
 261
 262 static int
 263 child_can_run (void)
 264 {
 265   return 1;
 266 }
 267
 268 static void
 269 child_close (void)
 270 {
 271 }
 272
 273 static void
 274 info_proc (char *args, int from_tty)
 275 {
 276   ProcessSerialNumber psn;
 277   ProcessInfoRec inforec;
 278   Str31 name;
 279   FSSpecPtr fsspec;
 280   OSType code;
 281
 282   /* Eventually use args, but not right now. */
 283
 284   psn.highLongOfPSN = 0;
 285   psn.lowLongOfPSN = kNoProcess;
 286
 287   inforec.processInfoLength = sizeof (ProcessInfoRec);
 288   inforec.processName = name;
 289   inforec.processAppSpec = fsspec;
 290
 291   printf_filtered ("Process Name                     Sgnt Type    PSN   Loc Size FreeMem Time\n");
 292
 293   while (GetNextProcess (&psn) == noErr)
 294     {
 295       if (GetProcessInformation (&psn, &inforec) == noErr)
 296         {
 297           name[name[0] + 1] = '\0';
 298           printf_filtered ("%-32.32s", name + 1);
 299           code = inforec.processSignature;
 300           printf_filtered (" %c%c%c%c",
 301                            (code >> 24) & 0xff,
 302                            (code >> 16) & 0xff,
 303                            (code >> 8) & 0xff,
 304                            (code >> 0) & 0xff);
 305           code = inforec.processType;
 306           printf_filtered (" %c%c%c%c",
 307                            (code >> 24) & 0xff,
 308                            (code >> 16) & 0xff,
 309                            (code >> 8) & 0xff,
 310                            (code >> 0) & 0xff);
 311           if (psn.highLongOfPSN == 0)
 312             printf_filtered (" %9d", psn.lowLongOfPSN);
 313           else
 314             printf_filtered (" %9d,%9d\n",
 315                              psn.highLongOfPSN, psn.lowLongOfPSN);
 316           printf_filtered (" 0x%x", inforec.processLocation);
 317           printf_filtered (" %9d", inforec.processSize);
 318           printf_filtered (" %9d", inforec.processFreeMem);
 319           printf_filtered (" %9d", inforec.processActiveTime);
 320           printf_filtered ("\n");
 321         }
 322     }
 323 }
 324
 325 struct target_ops child_ops;
 326
 327 static void
 328 init_child_ops (void)
 329 {
 330   child_ops.to_shortname = "mac";
 331   child_ops.to_longname = "MacOS application";
 332   child_ops.to_doc = "MacOS application (started by the \"run\" command).";
 333   child_ops.to_open = child_open;
 334   child_ops.to_close = child_close;
 335   child_ops.to_attach = child_attach;
 336   child_ops.to_post_attach = NULL;
 337   child_ops.to_require_attach = NULL;   /* to_require_attach */
 338   child_ops.to_detach = child_detach;
 339   child_ops.to_require_detach = NULL;   /* to_require_detach */
 340   child_ops.to_resume = child_resume;
 341   child_ops.to_wait = child_wait;
 342   child_ops.to_post_wait = NULL;        /* to_post_wait */
 343   child_ops.to_fetch_registers = child_fetch_inferior_registers;
 344   child_ops.to_store_registers = child_store_inferior_registers;
 345   child_ops.to_prepare_to_store = child_prepare_to_store;
 346   child_ops.to_xfer_memory = child_xfer_memory;
 347   child_ops.to_files_info = child_files_info;
 348   child_ops.to_insert_breakpoint = memory_insert_breakpoint;
 349   child_ops.to_remove_breakpoint = memory_remove_breakpoint;
 350   child_ops.to_terminal_init = 0;
 351   child_ops.to_terminal_inferior = 0;
 352   child_ops.to_terminal_ours_for_output = 0;
 353   child_ops.to_terminal_ours = 0;
 354   child_ops.to_terminal_info = 0;
 355   child_ops.to_kill = child_kill_inferior;
 356   child_ops.to_load = 0;
 357   child_ops.to_lookup_symbol = 0;
 358   child_ops.to_create_inferior = child_create_inferior;
 359   child_ops.to_post_startup_inferior = NULL;    /* to_post_startup_inferior */
 360   child_ops.to_acknowledge_created_inferior = NULL;     /* to_acknowledge_created_inferior */
 361   child_ops.to_clone_and_follow_inferior = NULL;        /* to_clone_and_follow_inferior */
 362   child_ops.to_post_follow_inferior_by_clone = NULL;    /* to_post_follow_inferior_by_clone */
 363   child_ops.to_insert_fork_catchpoint = NULL;
 364   child_ops.to_remove_fork_catchpoint = NULL;
 365   child_ops.to_insert_vfork_catchpoint = NULL;
 366   child_ops.to_remove_vfork_catchpoint = NULL;
 367   child_ops.to_has_forked = NULL;       /* to_has_forked */
 368   child_ops.to_has_vforked = NULL;      /* to_has_vforked */
 369   child_ops.to_can_follow_vfork_prior_to_exec = NULL;
 370   child_ops.to_post_follow_vfork = NULL;        /* to_post_follow_vfork */
 371   child_ops.to_insert_exec_catchpoint = NULL;
 372   child_ops.to_remove_exec_catchpoint = NULL;
 373   child_ops.to_has_execd = NULL;
 374   child_ops.to_reported_exec_events_per_exec_call = NULL;
 375   child_ops.to_has_exited = NULL;
 376   child_ops.to_mourn_inferior = child_mourn_inferior;
 377   child_ops.to_can_run = child_can_run;
 378   child_ops.to_notice_signals = 0;
 379   child_ops.to_thread_alive = 0;
 380   child_ops.to_stop = child_stop;
 381   child_ops.to_pid_to_exec_file = NULL;         /* to_pid_to_exec_file */
 382   child_ops.to_core_file_to_sym_file = NULL;
 383   child_ops.to_stratum = process_stratum;
 384   child_ops.DONT_USE = 0;
 385   child_ops.to_has_all_memory = 1;
 386   child_ops.to_has_memory = 1;
 387   child_ops.to_has_stack = 1;
 388   child_ops.to_has_registers = 1;
 389   child_ops.to_has_execution = 1;
 390   child_ops.to_sections = 0;
 391   child_ops.to_sections_end = 0;
 392   child_ops.to_magic = OPS_MAGIC;
 393 };
 394
 395 void
 396 _initialize_mac_nat (void)
 397 {
 398   init_child_ops ();
 399
 400   add_info ("proc", info_proc,
 401             "Show information about processes.");
 402 }