gdb/mac-nat.c

   1 /* Target-vector operations for controlling Mac applications, for GDB.
   2    Copyright 1995, 1996, 1998, 1999, 2000, 2001
   3    Free Software Foundation, Inc.
   4    Written by Stan Shebs.  Contributed by Cygnus Support.
   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 eve nthe 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 /* Note that because all the available Mac compilers are ANSI or very
  24    close, and this is a native-only file, the code may be purely ANSI.  */
  25
  26 #include "defs.h"
  27 #include "frame.h"              /* required by inferior.h */
  28 #include "inferior.h"
  29 #include "target.h"
  30 #include "gdb_wait.h"
  31 #include "gdbcore.h"
  32 #include "command.h"
  33 #include <signal.h>
  34 #include <sys/types.h>
  35 #include <fcntl.h>
  36 #include "buildsym.h"
  37 #include "gdb_string.h"
  38 #include "gdbthread.h"
  39 #include "gdbcmd.h"
  40 #include "regcache.h"
  41
  42 #include <Processes.h>
  43
  44 /* We call the functions "child_..." rather than "mac_..." so no one
  45    is tempted to try to link this with other native-only code.  */
  46
  47 /* Forward declaration */
  48
  49 extern struct target_ops child_ops;
  50
  51 static void child_stop (void);
  52
  53 static void
  54 child_fetch_inferior_registers (int r)
  55 {
  56   if (r < 0)
  57     {
  58       for (r = 0; r < NUM_REGS; r++)
  59         child_fetch_inferior_registers (r);
  60     }
  61   else
  62     {
  63       supply_register (r, 0);
  64     }
  65 }
  66
  67 static void
  68 child_store_inferior_registers (int r)
  69 {
  70   if (r < 0)
  71     {
  72       for (r = 0; r < NUM_REGS; r++)
  73         child_store_inferior_registers (r);
  74     }
  75   else
  76     {
  77       read_register_gen (r, 0);
  78     }
  79 }
  80
  81 static ptid_t
  82 child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
  83 {
  84 }
  85
  86 /* Attach to process PID, then initialize for debugging it.  */
  87
  88 static void
  89 child_attach (char *args, int from_tty)
  90 {
  91   ProcessSerialNumber psn;
  92   ProcessInfoRec inforec;
  93   Str31 name;
  94   FSSpecPtr fsspec;
  95   OSType code;
  96   int pid;
  97   char *exec_file;
  98
  99   if (!args)
 100     error_no_arg ("process-id to attach");
 101
 102   pid = atoi (args);
 103
 104   psn.highLongOfPSN = 0;
 105   psn.lowLongOfPSN = pid;
 106
 107   inforec.processInfoLength = sizeof (ProcessInfoRec);
 108   inforec.processName = name;
 109   inforec.processAppSpec = fsspec;
 110
 111   if (GetProcessInformation (&psn, &inforec) == noErr)
 112     {
 113       if (from_tty)
 114         {
 115           exec_file = (char *) get_exec_file (0);
 116
 117           if (exec_file)
 118             printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
 119                                target_pid_to_str (pid_to_ptid (pid)));
 120           else
 121             printf_unfiltered ("Attaching to %s\n",
 122                                target_pid_to_str (pid_to_ptid (pid)));
 123
 124           gdb_flush (gdb_stdout);
 125         }
 126       /* Do we need to do anything special? */
 127       attach_flag = 1;
 128       inferior_ptid = pid_to_ptid (pid);
 129       push_target (&child_ops);
 130     }
 131 }
 132
 133 static void
 134 child_detach (char *args, 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_ptid));
 145       gdb_flush (gdb_stdout);
 146     }
 147   inferior_ptid = null_ptid;
 148   unpush_target (&child_ops);
 149 }
 150
 151 /* Print status information about what we're accessing.  */
 152
 153 static void
 154 child_files_info (struct target_ops *ignore)
 155 {
 156   printf_unfiltered ("\tUsing the running image of %s %s.\n",
 157       attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
 158 }
 159
 160 /* ARGSUSED */
 161 static void
 162 child_open (char *arg, int from_tty)
 163 {
 164   error ("Use the \"run\" command to start a Mac application.");
 165 }
 166
 167 /* Start an inferior Mac program and sets inferior_ptid to its pid.
 168    EXEC_FILE is the file to run.
 169    ALLARGS is a string containing the arguments to the program.
 170    ENV is the environment vector to pass.  Errors reported with error().  */
 171
 172 static void
 173 child_create_inferior (char *exec_file, char *allargs, char **env)
 174 {
 175   LaunchParamBlockRec launchparms;
 176   FSSpec fsspec;
 177   OSErr launch_err;
 178
 179   if (!exec_file)
 180     {
 181       error ("No executable specified, use `target exec'.\n");
 182     }
 183
 184   launchparms.launchBlockID = extendedBlock;
 185   launchparms.launchEPBLength = extendedBlockLen;
 186   launchparms.launchFileFlags = 0;
 187   launchparms.launchControlFlags = launchContinue | launchNoFileFlags;
 188   fsspec.vRefNum = 0;
 189   fsspec.parID = 0;
 190   strcpy (fsspec.name + 1, exec_file);
 191   fsspec.name[0] = strlen (exec_file);
 192   launchparms.launchAppSpec = &fsspec;
 193   launchparms.launchAppParameters = nil;
 194
 195   launch_err = LaunchApplication (&launchparms);
 196
 197   if (launch_err == 999 /*memFullErr */ )
 198     {
 199       error ("Not enough memory to launch %s\n", exec_file);
 200     }
 201   else if (launch_err != noErr)
 202     {
 203       error ("Error launching %s, code %d\n", exec_file, launch_err);
 204     }
 205
 206   inferior_ptid = pid_to_ptid (launchparms.launchProcessSN.lowLongOfPSN);
 207   /* FIXME be sure that high long of PSN is 0 */
 208
 209   push_target (&child_ops);
 210   init_wait_for_inferior ();
 211   clear_proceed_status ();
 212
 213 /*  proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);  */
 214 }
 215
 216 static void
 217 child_mourn_inferior (void)
 218 {
 219   unpush_target (&child_ops);
 220   generic_mourn_inferior ();
 221 }
 222
 223 static void
 224 child_stop (void)
 225 {
 226 }
 227
 228 int
 229 child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
 230                    struct mem_attrib *attrib,
 231                    struct target_ops *target)
 232 {
 233   int i;
 234
 235   for (i = 0; i < len; ++i)
 236     {
 237       if (write)
 238         {
 239           ((char *) memaddr)[i] = myaddr[i];
 240         }
 241       else
 242         {
 243           myaddr[i] = ((char *) memaddr)[i];
 244         }
 245     }
 246   return len;
 247 }
 248
 249 void
 250 child_kill_inferior (void)
 251 {
 252 }
 253
 254 void
 255 child_resume (ptid_t ptid, int step, enum target_signal signal)
 256 {
 257 }
 258
 259 static void
 260 child_prepare_to_store (void)
 261 {
 262   /* Do nothing, since we can store individual regs */
 263 }
 264
 265 static int
 266 child_can_run (void)
 267 {
 268   return 1;
 269 }
 270
 271 static void
 272 child_close (void)
 273 {
 274 }
 275
 276 static void
 277 info_proc (char *args, int from_tty)
 278 {
 279   ProcessSerialNumber psn;
 280   ProcessInfoRec inforec;
 281   Str31 name;
 282   FSSpecPtr fsspec;
 283   OSType code;
 284
 285   /* Eventually use args, but not right now. */
 286
 287   psn.highLongOfPSN = 0;
 288   psn.lowLongOfPSN = kNoProcess;
 289
 290   inforec.processInfoLength = sizeof (ProcessInfoRec);
 291   inforec.processName = name;
 292   inforec.processAppSpec = fsspec;
 293
 294   printf_filtered ("Process Name                     Sgnt Type    PSN   Loc Size FreeMem Time\n");
 295
 296   while (GetNextProcess (&psn) == noErr)
 297     {
 298       if (GetProcessInformation (&psn, &inforec) == noErr)
 299         {
 300           name[name[0] + 1] = '\0';
 301           printf_filtered ("%-32.32s", name + 1);
 302           code = inforec.processSignature;
 303           printf_filtered (" %c%c%c%c",
 304                            (code >> 24) & 0xff,
 305                            (code >> 16) & 0xff,
 306                            (code >> 8) & 0xff,
 307                            (code >> 0) & 0xff);
 308           code = inforec.processType;
 309           printf_filtered (" %c%c%c%c",
 310                            (code >> 24) & 0xff,
 311                            (code >> 16) & 0xff,
 312                            (code >> 8) & 0xff,
 313                            (code >> 0) & 0xff);
 314           if (psn.highLongOfPSN == 0)
 315             printf_filtered (" %9d", psn.lowLongOfPSN);
 316           else
 317             printf_filtered (" %9d,%9d\n",
 318                              psn.highLongOfPSN, psn.lowLongOfPSN);
 319           printf_filtered (" 0x%x", inforec.processLocation);
 320           printf_filtered (" %9d", inforec.processSize);
 321           printf_filtered (" %9d", inforec.processFreeMem);
 322           printf_filtered (" %9d", inforec.processActiveTime);
 323           printf_filtered ("\n");
 324         }
 325     }
 326 }
 327
 328 struct target_ops child_ops;
 329
 330 static void
 331 init_child_ops (void)
 332 {
 333   child_ops.to_shortname = "mac";
 334   child_ops.to_longname = "MacOS application";
 335   child_ops.to_doc = "MacOS application (started by the \"run\" command).";
 336   child_ops.to_open = child_open;
 337   child_ops.to_close = child_close;
 338   child_ops.to_attach = child_attach;
 339   child_ops.to_post_attach = NULL;
 340   child_ops.to_require_attach = NULL;   /* to_require_attach */
 341   child_ops.to_detach = child_detach;
 342   child_ops.to_require_detach = NULL;   /* to_require_detach */
 343   child_ops.to_resume = child_resume;
 344   child_ops.to_wait = child_wait;
 345   child_ops.to_post_wait = NULL;        /* to_post_wait */
 346   child_ops.to_fetch_registers = child_fetch_inferior_registers;
 347   child_ops.to_store_registers = child_store_inferior_registers;
 348   child_ops.to_prepare_to_store = child_prepare_to_store;
 349   child_ops.to_xfer_memory = child_xfer_memory;
 350   child_ops.to_files_info = child_files_info;
 351   child_ops.to_insert_breakpoint = memory_insert_breakpoint;
 352   child_ops.to_remove_breakpoint = memory_remove_breakpoint;
 353   child_ops.to_terminal_init = 0;
 354   child_ops.to_terminal_inferior = 0;
 355   child_ops.to_terminal_ours_for_output = 0;
 356   child_ops.to_terminal_ours = 0;
 357   child_ops.to_terminal_info = 0;
 358   child_ops.to_kill = child_kill_inferior;
 359   child_ops.to_load = 0;
 360   child_ops.to_lookup_symbol = 0;
 361   child_ops.to_create_inferior = child_create_inferior;
 362   child_ops.to_post_startup_inferior = NULL;    /* to_post_startup_inferior */
 363   child_ops.to_acknowledge_created_inferior = NULL;     /* to_acknowledge_created_inferior */
 364   child_ops.to_clone_and_follow_inferior = NULL;        /* to_clone_and_follow_inferior */
 365   child_ops.to_post_follow_inferior_by_clone = NULL;    /* to_post_follow_inferior_by_clone */
 366   child_ops.to_insert_fork_catchpoint = NULL;
 367   child_ops.to_remove_fork_catchpoint = NULL;
 368   child_ops.to_insert_vfork_catchpoint = NULL;
 369   child_ops.to_remove_vfork_catchpoint = NULL;
 370   child_ops.to_has_forked = NULL;       /* to_has_forked */
 371   child_ops.to_has_vforked = NULL;      /* to_has_vforked */
 372   child_ops.to_can_follow_vfork_prior_to_exec = NULL;
 373   child_ops.to_post_follow_vfork = NULL;        /* to_post_follow_vfork */
 374   child_ops.to_insert_exec_catchpoint = NULL;
 375   child_ops.to_remove_exec_catchpoint = NULL;
 376   child_ops.to_has_execd = NULL;
 377   child_ops.to_reported_exec_events_per_exec_call = NULL;
 378   child_ops.to_has_exited = NULL;
 379   child_ops.to_mourn_inferior = child_mourn_inferior;
 380   child_ops.to_can_run = child_can_run;
 381   child_ops.to_notice_signals = 0;
 382   child_ops.to_thread_alive = 0;
 383   child_ops.to_stop = child_stop;
 384   child_ops.to_pid_to_exec_file = NULL;         /* to_pid_to_exec_file */
 385   child_ops.to_stratum = process_stratum;
 386   child_ops.DONT_USE = 0;
 387   child_ops.to_has_all_memory = 1;
 388   child_ops.to_has_memory = 1;
 389   child_ops.to_has_stack = 1;
 390   child_ops.to_has_registers = 1;
 391   child_ops.to_has_execution = 1;
 392   child_ops.to_sections = 0;
 393   child_ops.to_sections_end = 0;
 394   child_ops.to_magic = OPS_MAGIC;
 395 };
 396
 397 void
 398 _initialize_mac_nat (void)
 399 {
 400   init_child_ops ();
 401
 402   add_info ("proc", info_proc,
 403             "Show information about processes.");
 404 }