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,
  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
  40 #include <Processes.h>
  41
  42 /* We call the functions "child_..." rather than "mac_..." so no one
  43    is tempted to try to link this with other native-only code.  */
  44
  45 /* Forward declaration */
  46
  47 extern struct target_ops child_ops;
  48
  49 static void child_stop (void);
  50
  51 static void
  52 child_fetch_inferior_registers (int r)
  53 {
  54   if (r < 0)
  55     {
  56       for (r = 0; r < NUM_REGS; r++)
  57         child_fetch_inferior_registers (r);
  58     }
  59   else
  60     {
  61       supply_register (r, 0);
  62     }
  63 }
  64
  65 static void
  66 child_store_inferior_registers (int r)
  67 {
  68   if (r < 0)
  69     {
  70       for (r = 0; r < NUM_REGS; r++)
  71         child_store_inferior_registers (r);
  72     }
  73   else
  74     {
  75       read_register_gen (r, 0);
  76     }
  77 }
  78
  79 static int
  80 child_wait (int pid, struct target_waitstatus *ourstatus)
  81 {
  82 }
  83
  84 /* Attach to process PID, then initialize for debugging it.  */
  85
  86 static void
  87 child_attach (char *args, int from_tty)
  88 {
  89   ProcessSerialNumber psn;
  90   ProcessInfoRec inforec;
  91   Str31 name;
  92   FSSpecPtr fsspec;
  93   OSType code;
  94   int pid;
  95   char *exec_file;
  96
  97   if (!args)
  98     error_no_arg ("process-id to attach");
  99
 100   pid = atoi (args);
 101
 102   psn.highLongOfPSN = 0;
 103   psn.lowLongOfPSN = pid;
 104
 105   inforec.processInfoLength = sizeof (ProcessInfoRec);
 106   inforec.processName = name;
 107   inforec.processAppSpec = fsspec;
 108
 109   if (GetProcessInformation (&psn, &inforec) == noErr)
 110     {
 111       if (from_tty)
 112         {
 113           exec_file = (char *) get_exec_file (0);
 114
 115           if (exec_file)
 116             printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
 117                                target_pid_to_str (pid));
 118           else
 119             printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
 120
 121           gdb_flush (gdb_stdout);
 122         }
 123       /* Do we need to do anything special? */
 124       attach_flag = 1;
 125       inferior_pid = pid;
 126       push_target (&child_ops);
 127     }
 128 }
 129
 130 static void
 131 child_detach (char *args, int from_tty)
 132 {
 133   char *exec_file;
 134
 135   if (from_tty)
 136     {
 137       exec_file = get_exec_file (0);
 138       if (exec_file == 0)
 139         exec_file = "";
 140       printf_unfiltered ("Detaching from program: %s %s\n", exec_file,
 141                          target_pid_to_str (inferior_pid));
 142       gdb_flush (gdb_stdout);
 143     }
 144   inferior_pid = 0;
 145   unpush_target (&child_ops);
 146 }
 147
 148 /* Print status information about what we're accessing.  */
 149
 150 static void
 151 child_files_info (struct target_ops *ignore)
 152 {
 153   printf_unfiltered ("\tUsing the running image of %s %s.\n",
 154       attach_flag ? "attached" : "child", target_pid_to_str (inferior_pid));
 155 }
 156
 157 /* ARGSUSED */
 158 static void
 159 child_open (char *arg, int from_tty)
 160 {
 161   error ("Use the \"run\" command to start a Mac application.");
 162 }
 163
 164 /* Start an inferior Mac program and sets inferior_pid to its pid.
 165    EXEC_FILE is the file to run.
 166    ALLARGS is a string containing the arguments to the program.
 167    ENV is the environment vector to pass.  Errors reported with error().  */
 168
 169 static void
 170 child_create_inferior (char *exec_file, char *allargs, char **env)
 171 {
 172   LaunchParamBlockRec launchparms;
 173   FSSpec fsspec;
 174   OSErr launch_err;
 175
 176   if (!exec_file)
 177     {
 178       error ("No executable specified, use `target exec'.\n");
 179     }
 180
 181   launchparms.launchBlockID = extendedBlock;
 182   launchparms.launchEPBLength = extendedBlockLen;
 183   launchparms.launchFileFlags = 0;
 184   launchparms.launchControlFlags = launchContinue | launchNoFileFlags;
 185   fsspec.vRefNum = 0;
 186   fsspec.parID = 0;
 187   strcpy (fsspec.name + 1, exec_file);
 188   fsspec.name[0] = strlen (exec_file);
 189   launchparms.launchAppSpec = &fsspec;
 190   launchparms.launchAppParameters = nil;
 191
 192   launch_err = LaunchApplication (&launchparms);
 193
 194   if (launch_err == 999 /*memFullErr */ )
 195     {
 196       error ("Not enough memory to launch %s\n", exec_file);
 197     }
 198   else if (launch_err != noErr)
 199     {
 200       error ("Error launching %s, code %d\n", exec_file, launch_err);
 201     }
 202
 203   inferior_pid = launchparms.launchProcessSN.lowLongOfPSN;
 204   /* FIXME be sure that high long of PSN is 0 */
 205
 206   push_target (&child_ops);
 207   init_wait_for_inferior ();
 208   clear_proceed_status ();
 209
 210 /*  proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);  */
 211 }
 212
 213 static void
 214 child_mourn_inferior (void)
 215 {
 216   unpush_target (&child_ops);
 217   generic_mourn_inferior ();
 218 }
 219
 220 static void
 221 child_stop (void)
 222 {
 223 }
 224
 225 int
 226 child_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
 227                    int write, struct target_ops *target)
 228 {
 229   int i;
 230
 231   for (i = 0; i < len; ++i)
 232     {
 233       if (write)
 234         {
 235           ((char *) memaddr)[i] = myaddr[i];
 236         }
 237       else
 238         {
 239           myaddr[i] = ((char *) memaddr)[i];
 240         }
 241     }
 242   return len;
 243 }
 244
 245 void
 246 child_kill_inferior (void)
 247 {
 248 }
 249
 250 void
 251 child_resume (int pid, int step, enum target_signal signal)
 252 {
 253 }
 254
 255 static void
 256 child_prepare_to_store (void)
 257 {
 258   /* Do nothing, since we can store individual regs */
 259 }
 260
 261 static int
 262 child_can_run (void)
 263 {
 264   return 1;
 265 }
 266
 267 static void
 268 child_close (void)
 269 {
 270 }
 271
 272 static void
 273 info_proc (char *args, int from_tty)
 274 {
 275   ProcessSerialNumber psn;
 276   ProcessInfoRec inforec;
 277   Str31 name;
 278   FSSpecPtr fsspec;
 279   OSType code;
 280
 281   /* Eventually use args, but not right now. */
 282
 283   psn.highLongOfPSN = 0;
 284   psn.lowLongOfPSN = kNoProcess;
 285
 286   inforec.processInfoLength = sizeof (ProcessInfoRec);
 287   inforec.processName = name;
 288   inforec.processAppSpec = fsspec;
 289
 290   printf_filtered ("Process Name                     Sgnt Type    PSN   Loc Size FreeMem Time\n");
 291
 292   while (GetNextProcess (&psn) == noErr)
 293     {
 294       if (GetProcessInformation (&psn, &inforec) == noErr)
 295         {
 296           name[name[0] + 1] = '\0';
 297           printf_filtered ("%-32.32s", name + 1);
 298           code = inforec.processSignature;
 299           printf_filtered (" %c%c%c%c",
 300                            (code >> 24) & 0xff,
 301                            (code >> 16) & 0xff,
 302                            (code >> 8) & 0xff,
 303                            (code >> 0) & 0xff);
 304           code = inforec.processType;
 305           printf_filtered (" %c%c%c%c",
 306                            (code >> 24) & 0xff,
 307                            (code >> 16) & 0xff,
 308                            (code >> 8) & 0xff,
 309                            (code >> 0) & 0xff);
 310           if (psn.highLongOfPSN == 0)
 311             printf_filtered (" %9d", psn.lowLongOfPSN);
 312           else
 313             printf_filtered (" %9d,%9d\n",
 314                              psn.highLongOfPSN, psn.lowLongOfPSN);
 315           printf_filtered (" 0x%x", inforec.processLocation);
 316           printf_filtered (" %9d", inforec.processSize);
 317           printf_filtered (" %9d", inforec.processFreeMem);
 318           printf_filtered (" %9d", inforec.processActiveTime);
 319           printf_filtered ("\n");
 320         }
 321     }
 322 }
 323
 324 struct target_ops child_ops;
 325
 326 static void
 327 init_child_ops (void)
 328 {
 329   child_ops.to_shortname = "mac";
 330   child_ops.to_longname = "MacOS application";
 331   child_ops.to_doc = "MacOS application (started by the \"run\" command).";
 332   child_ops.to_open = child_open;
 333   child_ops.to_close = child_close;
 334   child_ops.to_attach = child_attach;
 335   child_ops.to_post_attach = NULL;
 336   child_ops.to_require_attach = NULL;   /* to_require_attach */
 337   child_ops.to_detach = child_detach;
 338   child_ops.to_require_detach = NULL;   /* to_require_detach */
 339   child_ops.to_resume = child_resume;
 340   child_ops.to_wait = child_wait;
 341   child_ops.to_post_wait = NULL;        /* to_post_wait */
 342   child_ops.to_fetch_registers = child_fetch_inferior_registers;
 343   child_ops.to_store_registers = child_store_inferior_registers;
 344   child_ops.to_prepare_to_store = child_prepare_to_store;
 345   child_ops.to_xfer_memory = child_xfer_memory;
 346   child_ops.to_files_info = child_files_info;
 347   child_ops.to_insert_breakpoint = memory_insert_breakpoint;
 348   child_ops.to_remove_breakpoint = memory_remove_breakpoint;
 349   child_ops.to_terminal_init = 0;
 350   child_ops.to_terminal_inferior = 0;
 351   child_ops.to_terminal_ours_for_output = 0;
 352   child_ops.to_terminal_ours = 0;
 353   child_ops.to_terminal_info = 0;
 354   child_ops.to_kill = child_kill_inferior;
 355   child_ops.to_load = 0;
 356   child_ops.to_lookup_symbol = 0;
 357   child_ops.to_create_inferior = child_create_inferior;
 358   child_ops.to_post_startup_inferior = NULL;    /* to_post_startup_inferior */
 359   child_ops.to_acknowledge_created_inferior = NULL;     /* to_acknowledge_created_inferior */
 360   child_ops.to_clone_and_follow_inferior = NULL;        /* to_clone_and_follow_inferior */
 361   child_ops.to_post_follow_inferior_by_clone = NULL;    /* to_post_follow_inferior_by_clone */
 362   child_ops.to_insert_fork_catchpoint = NULL;
 363   child_ops.to_remove_fork_catchpoint = NULL;
 364   child_ops.to_insert_vfork_catchpoint = NULL;
 365   child_ops.to_remove_vfork_catchpoint = NULL;
 366   child_ops.to_has_forked = NULL;       /* to_has_forked */
 367   child_ops.to_has_vforked = NULL;      /* to_has_vforked */
 368   child_ops.to_can_follow_vfork_prior_to_exec = NULL;
 369   child_ops.to_post_follow_vfork = NULL;        /* to_post_follow_vfork */
 370   child_ops.to_insert_exec_catchpoint = NULL;
 371   child_ops.to_remove_exec_catchpoint = NULL;
 372   child_ops.to_has_execd = NULL;
 373   child_ops.to_reported_exec_events_per_exec_call = NULL;
 374   child_ops.to_has_exited = NULL;
 375   child_ops.to_mourn_inferior = child_mourn_inferior;
 376   child_ops.to_can_run = child_can_run;
 377   child_ops.to_notice_signals = 0;
 378   child_ops.to_thread_alive = 0;
 379   child_ops.to_stop = child_stop;
 380   child_ops.to_pid_to_exec_file = NULL;         /* to_pid_to_exec_file */
 381   child_ops.to_core_file_to_sym_file = NULL;
 382   child_ops.to_stratum = process_stratum;
 383   child_ops.DONT_USE = 0;
 384   child_ops.to_has_all_memory = 1;
 385   child_ops.to_has_memory = 1;
 386   child_ops.to_has_stack = 1;
 387   child_ops.to_has_registers = 1;
 388   child_ops.to_has_execution = 1;
 389   child_ops.to_sections = 0;
 390   child_ops.to_sections_end = 0;
 391   child_ops.to_magic = OPS_MAGIC;
 392 };
 393
 394 void
 395 _initialize_mac_nat (void)
 396 {
 397   init_child_ops ();
 398
 399   add_info ("proc", info_proc,
 400             "Show information about processes.");
 401 }