1 /* Memory-access and commands for "inferior" process, for GDB.
2 Copyright 1986, 87, 88, 89, 91, 92, 95, 96, 1998, 1999
3 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
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. */
24 #include "gdb_string.h"
37 #include "event-top.h"
38 #include "parser-defs.h"
40 /* Functions exported for general use: */
42 void nofp_registers_info PARAMS ((char *, int));
44 void all_registers_info PARAMS ((char *, int));
46 void registers_info PARAMS ((char *, int));
48 /* Local functions: */
50 void continue_command PARAMS ((char *, int));
52 static void print_return_value (int struct_return, struct type *value_type);
54 static void finish_command_continuation PARAMS ((struct continuation_arg *));
56 static void until_next_command PARAMS ((int));
58 static void until_command PARAMS ((char *, int));
60 static void path_info PARAMS ((char *, int));
62 static void path_command PARAMS ((char *, int));
64 static void unset_command PARAMS ((char *, int));
66 static void float_info PARAMS ((char *, int));
68 static void detach_command PARAMS ((char *, int));
70 static void interrupt_target_command (char *args, int from_tty);
72 #if !defined (DO_REGISTERS_INFO)
73 static void do_registers_info PARAMS ((int, int));
76 static void unset_environment_command PARAMS ((char *, int));
78 static void set_environment_command PARAMS ((char *, int));
80 static void environment_info PARAMS ((char *, int));
82 static void program_info PARAMS ((char *, int));
84 static void finish_command PARAMS ((char *, int));
86 static void signal_command PARAMS ((char *, int));
88 static void jump_command PARAMS ((char *, int));
90 static void step_1 PARAMS ((int, int, char *));
91 static void step_once (int skip_subroutines, int single_inst, int count);
92 static void step_1_continuation (struct continuation_arg *arg);
94 void nexti_command PARAMS ((char *, int));
96 void stepi_command PARAMS ((char *, int));
98 static void next_command PARAMS ((char *, int));
100 static void step_command PARAMS ((char *, int));
102 static void run_command PARAMS ((char *, int));
104 static void run_no_args_command PARAMS ((char *args, int from_tty));
106 static void go_command PARAMS ((char *line_no, int from_tty));
108 static int strip_bg_char PARAMS ((char **));
110 void _initialize_infcmd PARAMS ((void));
112 #define GO_USAGE "Usage: go <location>\n"
114 static void breakpoint_auto_delete_contents PARAMS ((PTR));
116 #define ERROR_NO_INFERIOR \
117 if (!target_has_execution) error ("The program is not being run.");
119 /* String containing arguments to give to the program, separated by spaces.
120 Empty string (pointer to '\0') means no args. */
122 static char *inferior_args;
124 /* File name for default use for standard in/out in the inferior. */
126 char *inferior_io_terminal;
128 /* Pid of our debugged inferior, or 0 if no inferior now.
129 Since various parts of infrun.c test this to see whether there is a program
130 being debugged it should be nonzero (currently 3 is used) for remote
135 /* Last signal that the inferior received (why it stopped). */
137 enum target_signal stop_signal;
139 /* Address at which inferior stopped. */
143 /* Chain containing status of breakpoint(s) that we have stopped at. */
147 /* Flag indicating that a command has proceeded the inferior past the
148 current breakpoint. */
150 int breakpoint_proceeded;
152 /* Nonzero if stopped due to a step command. */
156 /* Nonzero if stopped due to completion of a stack dummy routine. */
158 int stop_stack_dummy;
160 /* Nonzero if stopped due to a random (unexpected) signal in inferior
163 int stopped_by_random_signal;
165 /* Range to single step within.
166 If this is nonzero, respond to a single-step signal
167 by continuing to step if the pc is in this range. */
169 CORE_ADDR step_range_start; /* Inclusive */
170 CORE_ADDR step_range_end; /* Exclusive */
172 /* Stack frame address as of when stepping command was issued.
173 This is how we know when we step into a subroutine call,
174 and how to set the frame for the breakpoint used to step out. */
176 CORE_ADDR step_frame_address;
178 /* Our notion of the current stack pointer. */
182 /* 1 means step over all subroutine calls.
183 0 means don't step over calls (used by stepi).
184 -1 means step over calls to undebuggable functions. */
188 /* If stepping, nonzero means step count is > 1
189 so don't print frame next time inferior stops
190 if it stops due to stepping. */
194 /* Environment to use for running inferior,
195 in format described in environ.h. */
197 struct environ *inferior_environ;
200 /* This function detects whether or not a '&' character (indicating
201 background execution) has been added as *the last* of the arguments ARGS
202 of a command. If it has, it removes it and returns 1. Otherwise it
203 does nothing and returns 0. */
210 p = strchr (*args, '&');
214 if (p == (*args + strlen (*args) - 1))
216 if (strlen (*args) > 1)
220 while (*p == ' ' || *p == '\t');
233 tty_command (file, from_tty)
238 error_no_arg ("terminal name for running target process");
240 inferior_io_terminal = savestring (file, strlen (file));
244 run_command (args, from_tty)
252 if (inferior_pid != 0 && target_has_execution)
255 && !query ("The program being debugged has been started already.\n\
256 Start it from the beginning? "))
257 error ("Program not restarted.");
259 #if defined(SOLIB_RESTART)
262 init_wait_for_inferior ();
265 clear_breakpoint_hit_counts ();
267 exec_file = (char *) get_exec_file (0);
269 /* Purge old solib objfiles. */
270 objfile_purge_solibs ();
272 do_run_cleanups (NULL);
274 /* The exec file is re-read every time we do a generic_mourn_inferior, so
275 we just have to worry about the symbol file. */
278 /* We keep symbols from add-symbol-file, on the grounds that the
279 user might want to add some symbols before running the program
280 (right?). But sometimes (dynamic loading where the user manually
281 introduces the new symbols with add-symbol-file), the code which
282 the symbols describe does not persist between runs. Currently
283 the user has to manually nuke all symbols between runs if they
284 want them to go away (PR 2207). This is probably reasonable. */
288 if (event_loop_p && target_can_async_p ())
289 async_disable_stdin ();
294 int async_exec = strip_bg_char (&args);
296 /* If we get a request for running in the bg but the target
297 doesn't support it, error out. */
298 if (event_loop_p && async_exec && !target_can_async_p ())
299 error ("Asynchronous execution not supported on this target.");
301 /* If we don't get a request of running in the bg, then we need
302 to simulate synchronous (fg) execution. */
303 if (event_loop_p && !async_exec && target_can_async_p ())
305 /* Simulate synchronous execution */
306 async_disable_stdin ();
309 /* If there were other args, beside '&', process them. */
312 cmd = concat ("set args ", args, NULL);
313 make_cleanup (free, cmd);
314 execute_command (cmd, from_tty);
320 puts_filtered ("Starting program: ");
322 puts_filtered (exec_file);
324 puts_filtered (inferior_args);
325 puts_filtered ("\n");
326 gdb_flush (gdb_stdout);
329 target_create_inferior (exec_file, inferior_args,
330 environ_vector (inferior_environ));
335 run_no_args_command (args, from_tty)
339 execute_command ("set args", from_tty);
340 run_command ((char *) NULL, from_tty);
345 continue_command (proc_count_exp, from_tty)
346 char *proc_count_exp;
352 /* Find out whether we must run in the background. */
353 if (proc_count_exp != NULL)
354 async_exec = strip_bg_char (&proc_count_exp);
356 /* If we must run in the background, but the target can't do it,
358 if (event_loop_p && async_exec && !target_can_async_p ())
359 error ("Asynchronous execution not supported on this target.");
361 /* If we are not asked to run in the bg, then prepare to run in the
362 foreground, synchronously. */
363 if (event_loop_p && !async_exec && target_can_async_p ())
365 /* Simulate synchronous execution */
366 async_disable_stdin ();
369 /* If have argument (besides '&'), set proceed count of breakpoint
371 if (proc_count_exp != NULL)
373 bpstat bs = stop_bpstat;
374 int num = bpstat_num (&bs);
375 if (num == 0 && from_tty)
378 ("Not stopped at any breakpoint; argument ignored.\n");
382 set_ignore_count (num,
383 parse_and_eval_address (proc_count_exp) - 1,
385 /* set_ignore_count prints a message ending with a period.
386 So print two spaces before "Continuing.". */
388 printf_filtered (" ");
389 num = bpstat_num (&bs);
394 printf_filtered ("Continuing.\n");
396 clear_proceed_status ();
398 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
401 /* Step until outside of current statement. */
405 step_command (count_string, from_tty)
409 step_1 (0, 0, count_string);
412 /* Likewise, but skip over subroutine calls as if single instructions. */
416 next_command (count_string, from_tty)
420 step_1 (1, 0, count_string);
423 /* Likewise, but step only one instruction. */
427 stepi_command (count_string, from_tty)
431 step_1 (0, 1, count_string);
436 nexti_command (count_string, from_tty)
440 step_1 (1, 1, count_string);
444 step_1 (skip_subroutines, single_inst, count_string)
445 int skip_subroutines;
449 register int count = 1;
450 struct frame_info *frame;
451 struct cleanup *cleanups = 0;
457 async_exec = strip_bg_char (&count_string);
459 /* If we get a request for running in the bg but the target
460 doesn't support it, error out. */
461 if (event_loop_p && async_exec && !target_can_async_p ())
462 error ("Asynchronous execution not supported on this target.");
464 /* If we don't get a request of running in the bg, then we need
465 to simulate synchronous (fg) execution. */
466 if (event_loop_p && !async_exec && target_can_async_p ())
468 /* Simulate synchronous execution */
469 async_disable_stdin ();
472 count = count_string ? parse_and_eval_address (count_string) : 1;
474 if (!single_inst || skip_subroutines) /* leave si command alone */
476 enable_longjmp_breakpoint ();
477 if (!event_loop_p || !target_can_async_p ())
478 cleanups = make_cleanup ((make_cleanup_func) disable_longjmp_breakpoint,
481 make_exec_cleanup ((make_cleanup_func) disable_longjmp_breakpoint, 0);
484 /* In synchronous case, all is well, just use the regular for loop. */
485 if (!event_loop_p || !target_can_async_p ())
487 for (; count > 0; count--)
489 clear_proceed_status ();
491 frame = get_current_frame ();
492 if (!frame) /* Avoid coredump here. Why tho? */
493 error ("No current frame");
494 step_frame_address = FRAME_FP (frame);
495 step_sp = read_sp ();
499 find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end);
500 if (step_range_end == 0)
503 if (find_pc_partial_function (stop_pc, &name, &step_range_start,
504 &step_range_end) == 0)
505 error ("Cannot find bounds of current function");
507 target_terminal_ours ();
509 Single stepping until exit from function %s, \n\
510 which has no line number information.\n", name);
515 /* Say we are stepping, but stop after one insn whatever it does. */
516 step_range_start = step_range_end = 1;
517 if (!skip_subroutines)
519 Don't step over function calls, not even to functions lacking
524 if (skip_subroutines)
527 step_multi = (count > 1);
528 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
533 /* FIXME: On nexti, this may have already been done (when we hit the
534 step resume break, I think). Probably this should be moved to
535 wait_for_inferior (near the top). */
536 #if defined (SHIFT_INST_REGS)
541 if (!single_inst || skip_subroutines)
542 do_cleanups (cleanups);
545 /* In case of asynchronous target things get complicated, do only
546 one step for now, before returning control to the event loop. Let
547 the continuation figure out how many other steps we need to do,
548 and handle them one at the time, through step_once(). */
551 if (event_loop_p && target_can_async_p ())
552 step_once (skip_subroutines, single_inst, count);
556 /* Called after we are done with one step operation, to check whether
557 we need to step again, before we print the prompt and return control
558 to the user. If count is > 1, we will need to do one more call to
559 proceed(), via step_once(). Basically it is like step_once and
560 step_1_continuation are co-recursive. */
562 step_1_continuation (arg)
563 struct continuation_arg *arg;
566 int skip_subroutines;
569 skip_subroutines = (int) arg->data;
570 single_inst = (int) (arg->next)->data;
571 count = (int) ((arg->next)->next)->data;
575 /* FIXME: On nexti, this may have already been done (when we hit the
576 step resume break, I think). Probably this should be moved to
577 wait_for_inferior (near the top). */
578 #if defined (SHIFT_INST_REGS)
581 step_once (skip_subroutines, single_inst, count - 1);
584 if (!single_inst || skip_subroutines)
585 do_exec_cleanups (ALL_CLEANUPS);
588 /* Do just one step operation. If count >1 we will have to set up a
589 continuation to be done after the target stops (after this one
590 step). This is useful to implement the 'step n' kind of commands, in
591 case of asynchronous targets. We had to split step_1 into two parts,
592 one to be done before proceed() and one afterwards. This function is
593 called in case of step n with n>1, after the first step operation has
596 step_once (int skip_subroutines, int single_inst, int count)
598 struct continuation_arg *arg1;
599 struct continuation_arg *arg2;
600 struct continuation_arg *arg3;
601 struct frame_info *frame;
605 clear_proceed_status ();
607 frame = get_current_frame ();
608 if (!frame) /* Avoid coredump here. Why tho? */
609 error ("No current frame");
610 step_frame_address = FRAME_FP (frame);
611 step_sp = read_sp ();
615 find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end);
616 if (step_range_end == 0)
619 if (find_pc_partial_function (stop_pc, &name, &step_range_start,
620 &step_range_end) == 0)
621 error ("Cannot find bounds of current function");
623 target_terminal_ours ();
625 Single stepping until exit from function %s, \n\
626 which has no line number information.\n", name);
631 /* Say we are stepping, but stop after one insn whatever it does. */
632 step_range_start = step_range_end = 1;
633 if (!skip_subroutines)
635 Don't step over function calls, not even to functions lacking
640 if (skip_subroutines)
643 step_multi = (count > 1);
645 (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
647 (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
649 (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
651 arg1->data = (PTR) skip_subroutines;
653 arg2->data = (PTR) single_inst;
655 arg3->data = (PTR) count;
656 add_intermediate_continuation (step_1_continuation, arg1);
657 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
662 /* Continue program at specified address. */
665 jump_command (arg, from_tty)
669 register CORE_ADDR addr;
670 struct symtabs_and_lines sals;
671 struct symtab_and_line sal;
678 /* Find out whether we must run in the background. */
680 async_exec = strip_bg_char (&arg);
682 /* If we must run in the background, but the target can't do it,
684 if (event_loop_p && async_exec && !target_can_async_p ())
685 error ("Asynchronous execution not supported on this target.");
687 /* If we are not asked to run in the bg, then prepare to run in the
688 foreground, synchronously. */
689 if (event_loop_p && !async_exec && target_can_async_p ())
691 /* Simulate synchronous execution */
692 async_disable_stdin ();
696 error_no_arg ("starting address");
698 sals = decode_line_spec_1 (arg, 1);
701 error ("Unreasonable jump request");
705 free ((PTR) sals.sals);
707 if (sal.symtab == 0 && sal.pc == 0)
708 error ("No source file has been specified.");
710 resolve_sal_pc (&sal); /* May error out */
712 /* See if we are trying to jump to another function. */
713 fn = get_frame_function (get_current_frame ());
714 sfn = find_pc_function (sal.pc);
715 if (fn != NULL && sfn != fn)
717 if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line,
718 SYMBOL_SOURCE_NAME (fn)))
720 error ("Not confirmed.");
727 fixup_symbol_section (sfn, 0);
728 if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) &&
729 !section_is_mapped (SYMBOL_BFD_SECTION (sfn)))
731 if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? "))
733 error ("Not confirmed.");
743 printf_filtered ("Continuing at ");
744 print_address_numeric (addr, 1, gdb_stdout);
745 printf_filtered (".\n");
748 clear_proceed_status ();
749 proceed (addr, TARGET_SIGNAL_0, 0);
753 /* Go to line or address in current procedure */
755 go_command (line_no, from_tty)
759 if (line_no == (char *) NULL || !*line_no)
760 printf_filtered (GO_USAGE);
763 tbreak_command (line_no, from_tty);
764 jump_command (line_no, from_tty);
769 /* Continue program giving it specified signal. */
772 signal_command (signum_exp, from_tty)
776 enum target_signal oursig;
778 dont_repeat (); /* Too dangerous. */
782 error_no_arg ("signal number");
784 /* It would be even slicker to make signal names be valid expressions,
785 (the type could be "enum $signal" or some such), then the user could
786 assign them to convenience variables. */
787 oursig = target_signal_from_name (signum_exp);
789 if (oursig == TARGET_SIGNAL_UNKNOWN)
791 /* No, try numeric. */
792 int num = parse_and_eval_address (signum_exp);
795 oursig = TARGET_SIGNAL_0;
797 oursig = target_signal_from_command (num);
802 if (oursig == TARGET_SIGNAL_0)
803 printf_filtered ("Continuing with no signal.\n");
805 printf_filtered ("Continuing with signal %s.\n",
806 target_signal_to_name (oursig));
809 clear_proceed_status ();
810 /* "signal 0" should not get stuck if we are stopped at a breakpoint.
811 FIXME: Neither should "signal foo" but when I tried passing
812 (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
813 tried to track down yet. */
814 proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0);
817 /* Call breakpoint_auto_delete on the current contents of the bpstat
818 pointed to by arg (which is really a bpstat *). */
821 breakpoint_auto_delete_contents (arg)
824 breakpoint_auto_delete (*(bpstat *) arg);
828 /* Execute a "stack dummy", a piece of code stored in the stack
829 by the debugger to be executed in the inferior.
831 To call: first, do PUSH_DUMMY_FRAME.
832 Then push the contents of the dummy. It should end with a breakpoint insn.
833 Then call here, passing address at which to start the dummy.
835 The contents of all registers are saved before the dummy frame is popped
836 and copied into the buffer BUFFER.
838 The dummy's frame is automatically popped whenever that break is hit.
839 If that is the first time the program stops, run_stack_dummy
840 returns to its caller with that frame already gone and returns 0.
841 Otherwise, run_stack-dummy returns 1 (the frame will eventually be popped
842 when we do hit that breakpoint). */
845 run_stack_dummy (addr, buffer)
849 struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0);
852 /* Now proceed, having reached the desired place. */
853 clear_proceed_status ();
855 if (CALL_DUMMY_BREAKPOINT_OFFSET_P)
857 struct breakpoint *bpt;
858 struct symtab_and_line sal;
860 INIT_SAL (&sal); /* initialize to zeroes */
861 if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT)
863 sal.pc = CALL_DUMMY_ADDRESS ();
867 sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET;
869 sal.section = find_pc_overlay (sal.pc);
871 /* Set up a FRAME for the dummy frame so we can pass it to
872 set_momentary_breakpoint. We need to give the breakpoint a
873 frame in case there is only one copy of the dummy (e.g.
874 CALL_DUMMY_LOCATION == AFTER_TEXT_END). */
875 flush_cached_frames ();
876 set_current_frame (create_new_frame (read_fp (), sal.pc));
878 /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put
879 a breakpoint instruction. If not, the call dummy already has the
880 breakpoint instruction in it.
882 addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET,
883 so we need to subtract the CALL_DUMMY_START_OFFSET. */
884 bpt = set_momentary_breakpoint (sal,
885 get_current_frame (),
887 bpt->disposition = del;
889 /* If all error()s out of proceed ended up calling normal_stop (and
890 perhaps they should; it already does in the special case of error
891 out of resume()), then we wouldn't need this. */
892 make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat);
895 disable_watchpoints_before_interactive_call_start ();
896 proceed_to_finish = 1; /* We want stop_registers, please... */
898 if (target_can_async_p ())
899 saved_async = target_async_mask (0);
901 proceed (addr, TARGET_SIGNAL_0, 0);
904 target_async_mask (saved_async);
906 enable_watchpoints_after_interactive_call_stop ();
908 discard_cleanups (old_cleanups);
910 if (!stop_stack_dummy)
913 /* On return, the stack dummy has been popped already. */
915 memcpy (buffer, stop_registers, REGISTER_BYTES);
919 /* Proceed until we reach a different source line with pc greater than
920 our current one or exit the function. We skip calls in both cases.
922 Note that eventually this command should probably be changed so
923 that only source lines are printed out when we hit the breakpoint
924 we set. This may involve changes to wait_for_inferior and the
925 proceed status code. */
929 until_next_command (from_tty)
932 struct frame_info *frame;
935 struct symtab_and_line sal;
937 clear_proceed_status ();
939 frame = get_current_frame ();
941 /* Step until either exited from this function or greater
942 than the current line (if in symbolic section) or pc (if
946 func = find_pc_function (pc);
950 struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc);
953 error ("Execution is not within a known function.");
955 step_range_start = SYMBOL_VALUE_ADDRESS (msymbol);
960 sal = find_pc_line (pc, 0);
962 step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
963 step_range_end = sal.end;
967 step_frame_address = FRAME_FP (frame);
968 step_sp = read_sp ();
970 step_multi = 0; /* Only one call to proceed */
972 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
976 until_command (arg, from_tty)
982 if (!target_has_execution)
983 error ("The program is not running.");
985 /* Find out whether we must run in the background. */
987 async_exec = strip_bg_char (&arg);
989 /* If we must run in the background, but the target can't do it,
991 if (event_loop_p && async_exec && !target_can_async_p ())
992 error ("Asynchronous execution not supported on this target.");
994 /* If we are not asked to run in the bg, then prepare to run in the
995 foreground, synchronously. */
996 if (event_loop_p && !async_exec && target_can_async_p ())
998 /* Simulate synchronous execution */
999 async_disable_stdin ();
1003 until_break_command (arg, from_tty);
1005 until_next_command (from_tty);
1009 /* Print the result of a function at the end of a 'finish' command. */
1011 print_return_value (int structure_return, struct type *value_type)
1013 register value_ptr value;
1015 if (!structure_return)
1017 value = value_being_returned (value_type, stop_registers, structure_return);
1018 printf_filtered ("Value returned is $%d = ", record_latest_value (value));
1019 value_print (value, gdb_stdout, 0, Val_no_prettyprint);
1020 printf_filtered ("\n");
1024 /* We cannot determine the contents of the structure because
1025 it is on the stack, and we don't know where, since we did not
1026 initiate the call, as opposed to the call_function_by_hand case */
1027 #ifdef VALUE_RETURNED_FROM_STACK
1029 printf_filtered ("Value returned has type: %s.", TYPE_NAME (value_type));
1030 printf_filtered (" Cannot determine contents\n");
1032 value = value_being_returned (value_type, stop_registers, structure_return);
1033 printf_filtered ("Value returned is $%d = ", record_latest_value (value));
1034 value_print (value, gdb_stdout, 0, Val_no_prettyprint);
1035 printf_filtered ("\n");
1040 /* Stuff that needs to be done by the finish command after the target
1041 has stopped. In asynchronous mode, we wait for the target to stop in
1042 the call to poll or select in the event loop, so it is impossible to
1043 do all the stuff as part of the finish_command function itself. The
1044 only chance we have to complete this command is in
1045 fetch_inferior_event, which is called by the event loop as soon as it
1046 detects that the target has stopped. This function is called via the
1047 cmd_continaution pointer. */
1049 finish_command_continuation (arg)
1050 struct continuation_arg *arg;
1052 register struct symbol *function;
1053 struct breakpoint *breakpoint;
1054 struct cleanup *cleanups;
1056 breakpoint = (struct breakpoint *) arg->data;
1057 function = (struct symbol *) (arg->next)->data;
1058 cleanups = (struct cleanup *) (arg->next->next)->data;
1060 if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL
1063 struct type *value_type;
1067 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function));
1069 internal_error ("finish_command: function has no target type");
1071 if (TYPE_CODE (value_type) == TYPE_CODE_VOID)
1073 do_exec_cleanups (cleanups);
1077 funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function));
1079 struct_return = using_struct_return (value_of_variable (function, NULL),
1081 check_typedef (value_type),
1082 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function)));
1084 print_return_value (struct_return, value_type);
1086 do_exec_cleanups (cleanups);
1089 /* "finish": Set a temporary breakpoint at the place
1090 the selected frame will return to, then continue. */
1093 finish_command (arg, from_tty)
1097 struct symtab_and_line sal;
1098 register struct frame_info *frame;
1099 register struct symbol *function;
1100 struct breakpoint *breakpoint;
1101 struct cleanup *old_chain;
1102 struct continuation_arg *arg1, *arg2, *arg3;
1106 /* Find out whether we must run in the background. */
1108 async_exec = strip_bg_char (&arg);
1110 /* If we must run in the background, but the target can't do it,
1112 if (event_loop_p && async_exec && !target_can_async_p ())
1113 error ("Asynchronous execution not supported on this target.");
1115 /* If we are not asked to run in the bg, then prepare to run in the
1116 foreground, synchronously. */
1117 if (event_loop_p && !async_exec && target_can_async_p ())
1119 /* Simulate synchronous execution */
1120 async_disable_stdin ();
1124 error ("The \"finish\" command does not take any arguments.");
1125 if (!target_has_execution)
1126 error ("The program is not running.");
1127 if (selected_frame == NULL)
1128 error ("No selected frame.");
1130 frame = get_prev_frame (selected_frame);
1132 error ("\"finish\" not meaningful in the outermost frame.");
1134 clear_proceed_status ();
1136 sal = find_pc_line (frame->pc, 0);
1139 breakpoint = set_momentary_breakpoint (sal, frame, bp_finish);
1141 if (!event_loop_p || !target_can_async_p ())
1142 old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
1144 old_chain = make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
1146 /* Find the function we will return from. */
1148 function = find_pc_function (selected_frame->pc);
1150 /* Print info on the selected frame, including level number
1154 printf_filtered ("Run till exit from ");
1155 print_stack_frame (selected_frame, selected_frame_level, 0);
1158 /* If running asynchronously and the target support asynchronous
1159 execution, set things up for the rest of the finish command to be
1160 completed later on, when gdb has detected that the target has
1161 stopped, in fetch_inferior_event. */
1162 if (event_loop_p && target_can_async_p ())
1165 (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
1167 (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
1169 (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg));
1173 arg1->data = (PTR) breakpoint;
1174 arg2->data = (PTR) function;
1175 arg3->data = (PTR) old_chain;
1176 add_continuation (finish_command_continuation, arg1);
1179 proceed_to_finish = 1; /* We want stop_registers, please... */
1180 proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
1182 /* Do this only if not running asynchronously or if the target
1183 cannot do async execution. Otherwise, complete this command when
1184 the target actually stops, in fetch_inferior_event. */
1185 if (!event_loop_p || !target_can_async_p ())
1188 /* Did we stop at our breakpoint? */
1189 if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL
1192 struct type *value_type;
1196 value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function));
1198 internal_error ("finish_command: function has no target type");
1200 /* FIXME: Shouldn't we do the cleanups before returning? */
1201 if (TYPE_CODE (value_type) == TYPE_CODE_VOID)
1204 funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function));
1207 using_struct_return (value_of_variable (function, NULL),
1209 check_typedef (value_type),
1210 BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function)));
1212 print_return_value (struct_return, value_type);
1214 do_cleanups (old_chain);
1220 program_info (args, from_tty)
1224 bpstat bs = stop_bpstat;
1225 int num = bpstat_num (&bs);
1227 if (!target_has_execution)
1229 printf_filtered ("The program being debugged is not being run.\n");
1233 target_files_info ();
1234 printf_filtered ("Program stopped at %s.\n",
1235 local_hex_string ((unsigned long) stop_pc));
1237 printf_filtered ("It stopped after being stepped.\n");
1240 /* There may be several breakpoints in the same place, so this
1241 isn't as strange as it seems. */
1246 printf_filtered ("It stopped at a breakpoint that has ");
1247 printf_filtered ("since been deleted.\n");
1250 printf_filtered ("It stopped at breakpoint %d.\n", num);
1251 num = bpstat_num (&bs);
1254 else if (stop_signal != TARGET_SIGNAL_0)
1256 printf_filtered ("It stopped with signal %s, %s.\n",
1257 target_signal_to_name (stop_signal),
1258 target_signal_to_string (stop_signal));
1263 printf_filtered ("Type \"info stack\" or \"info registers\" ");
1264 printf_filtered ("for more information.\n");
1269 environment_info (var, from_tty)
1275 register char *val = get_in_environ (inferior_environ, var);
1278 puts_filtered (var);
1279 puts_filtered (" = ");
1280 puts_filtered (val);
1281 puts_filtered ("\n");
1285 puts_filtered ("Environment variable \"");
1286 puts_filtered (var);
1287 puts_filtered ("\" not defined.\n");
1292 register char **vector = environ_vector (inferior_environ);
1295 puts_filtered (*vector++);
1296 puts_filtered ("\n");
1302 set_environment_command (arg, from_tty)
1306 register char *p, *val, *var;
1310 error_no_arg ("environment variable and value");
1312 /* Find seperation between variable name and value */
1313 p = (char *) strchr (arg, '=');
1314 val = (char *) strchr (arg, ' ');
1316 if (p != 0 && val != 0)
1318 /* We have both a space and an equals. If the space is before the
1319 equals, walk forward over the spaces til we see a nonspace
1320 (possibly the equals). */
1325 /* Now if the = is after the char following the spaces,
1326 take the char following the spaces. */
1330 else if (val != 0 && p == 0)
1334 error_no_arg ("environment variable to set");
1336 if (p == 0 || p[1] == 0)
1340 p = arg + strlen (arg); /* So that savestring below will work */
1344 /* Not setting variable value to null */
1346 while (*val == ' ' || *val == '\t')
1350 while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
1353 var = savestring (arg, p - arg);
1356 printf_filtered ("Setting environment variable ");
1357 printf_filtered ("\"%s\" to null value.\n", var);
1358 set_in_environ (inferior_environ, var, "");
1361 set_in_environ (inferior_environ, var, val);
1366 unset_environment_command (var, from_tty)
1372 /* If there is no argument, delete all environment variables.
1373 Ask for confirmation if reading from the terminal. */
1374 if (!from_tty || query ("Delete all environment variables? "))
1376 free_environ (inferior_environ);
1377 inferior_environ = make_environ ();
1381 unset_in_environ (inferior_environ, var);
1384 /* Handle the execution path (PATH variable) */
1386 static const char path_var_name[] = "PATH";
1390 path_info (args, from_tty)
1394 puts_filtered ("Executable and object file path: ");
1395 puts_filtered (get_in_environ (inferior_environ, path_var_name));
1396 puts_filtered ("\n");
1399 /* Add zero or more directories to the front of the execution path. */
1402 path_command (dirname, from_tty)
1409 env = get_in_environ (inferior_environ, path_var_name);
1410 /* Can be null if path is not set */
1413 exec_path = strsave (env);
1414 mod_path (dirname, &exec_path);
1415 set_in_environ (inferior_environ, path_var_name, exec_path);
1418 path_info ((char *) NULL, from_tty);
1422 #ifdef REGISTER_NAMES
1423 char *gdb_register_names[] = REGISTER_NAMES;
1425 /* Print out the machine register regnum. If regnum is -1,
1426 print all registers (fpregs == 1) or all non-float registers
1429 For most machines, having all_registers_info() print the
1430 register(s) one per line is good enough. If a different format
1431 is required, (eg, for MIPS or Pyramid 90x, which both have
1432 lots of regs), or there is an existing convention for showing
1433 all the registers, define the macro DO_REGISTERS_INFO(regnum, fp)
1434 to provide that format. */
1436 #if !defined (DO_REGISTERS_INFO)
1438 #define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp)
1441 do_registers_info (regnum, fpregs)
1446 int numregs = ARCH_NUM_REGS;
1448 for (i = 0; i < numregs; i++)
1450 char raw_buffer[MAX_REGISTER_RAW_SIZE];
1451 char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
1453 /* Decide between printing all regs, nonfloat regs, or specific reg. */
1456 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs)
1465 /* If the register name is empty, it is undefined for this
1466 processor, so don't display anything. */
1467 if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0')
1470 fputs_filtered (REGISTER_NAME (i), gdb_stdout);
1471 print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout);
1473 /* Get the data in raw format. */
1474 if (read_relative_register_raw_bytes (i, raw_buffer))
1476 printf_filtered ("*value not available*\n");
1480 /* Convert raw data to virtual format if necessary. */
1481 if (REGISTER_CONVERTIBLE (i))
1483 REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i),
1484 raw_buffer, virtual_buffer);
1488 memcpy (virtual_buffer, raw_buffer,
1489 REGISTER_VIRTUAL_SIZE (i));
1492 /* If virtual format is floating, print it that way, and in raw hex. */
1493 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT)
1497 #ifdef INVALID_FLOAT
1498 if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i)))
1499 printf_filtered ("<invalid float>");
1502 val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
1503 gdb_stdout, 0, 1, 0, Val_pretty_default);
1505 printf_filtered ("\t(raw 0x");
1506 for (j = 0; j < REGISTER_RAW_SIZE (i); j++)
1508 register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j
1509 : REGISTER_RAW_SIZE (i) - 1 - j;
1510 printf_filtered ("%02x", (unsigned char) raw_buffer[idx]);
1512 printf_filtered (")");
1515 /* FIXME! val_print probably can handle all of these cases now... */
1517 /* Else if virtual format is too long for printf,
1518 print in hex a byte at a time. */
1519 else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long))
1522 printf_filtered ("0x");
1523 for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++)
1524 printf_filtered ("%02x", (unsigned char) virtual_buffer[j]);
1526 /* Else print as integer in hex and in decimal. */
1529 val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
1530 gdb_stdout, 'x', 1, 0, Val_pretty_default);
1531 printf_filtered ("\t");
1532 val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
1533 gdb_stdout, 0, 1, 0, Val_pretty_default);
1536 /* The SPARC wants to print even-numbered float regs as doubles
1537 in addition to printing them as floats. */
1538 #ifdef PRINT_REGISTER_HOOK
1539 PRINT_REGISTER_HOOK (i);
1542 printf_filtered ("\n");
1545 #endif /* no DO_REGISTERS_INFO. */
1548 registers_info (addr_exp, fpregs)
1552 int regnum, numregs;
1555 if (!target_has_registers)
1556 error ("The program has no registers now.");
1557 if (selected_frame == NULL)
1558 error ("No selected frame.");
1562 DO_REGISTERS_INFO (-1, fpregs);
1568 if (addr_exp[0] == '$')
1571 while (*end != '\0' && *end != ' ' && *end != '\t')
1573 numregs = ARCH_NUM_REGS;
1575 regnum = target_map_name_to_register (addr_exp, end - addr_exp);
1581 if (*addr_exp >= '0' && *addr_exp <= '9')
1582 regnum = atoi (addr_exp); /* Take a number */
1583 if (regnum >= numregs) /* Bad name, or bad number */
1584 error ("%.*s: invalid register", end - addr_exp, addr_exp);
1587 DO_REGISTERS_INFO (regnum, fpregs);
1590 while (*addr_exp == ' ' || *addr_exp == '\t')
1593 while (*addr_exp != '\0');
1597 all_registers_info (addr_exp, from_tty)
1601 registers_info (addr_exp, 1);
1605 nofp_registers_info (addr_exp, from_tty)
1609 registers_info (addr_exp, 0);
1615 * Should save/restore the tty state since it might be that the
1616 * program to be debugged was started on this tty and it wants
1617 * the tty in some state other than what we want. If it's running
1618 * on another terminal or without a terminal, then saving and
1619 * restoring the tty state is a harmless no-op.
1620 * This only needs to be done if we are attaching to a process.
1625 takes a program started up outside of gdb and ``attaches'' to it.
1626 This stops it cold in its tracks and allows us to start debugging it.
1627 and wait for the trace-trap that results from attaching. */
1630 attach_command (args, from_tty)
1635 extern int auto_solib_add;
1639 char *full_exec_path = NULL;
1641 dont_repeat (); /* Not for the faint of heart */
1643 if (target_has_execution)
1645 if (query ("A program is being debugged already. Kill it? "))
1648 error ("Not killed.");
1651 target_attach (args, from_tty);
1653 /* Set up the "saved terminal modes" of the inferior
1654 based on what modes we are starting it with. */
1655 target_terminal_init ();
1657 /* Install inferior's terminal modes. */
1658 target_terminal_inferior ();
1660 /* Set up execution context to know that we should return from
1661 wait_for_inferior as soon as the target reports a stop. */
1662 init_wait_for_inferior ();
1663 clear_proceed_status ();
1664 stop_soon_quietly = 1;
1666 /* No traps are generated when attaching to inferior under Mach 3
1668 #ifndef ATTACH_NO_WAIT
1669 wait_for_inferior ();
1673 * If no exec file is yet known, try to determine it from the
1676 exec_file = (char *) get_exec_file (0);
1679 exec_file = target_pid_to_exec_file (inferior_pid);
1682 /* It's possible we don't have a full path, but rather just a
1683 filename. Some targets, such as HP-UX, don't provide the
1686 Attempt to qualify the filename against the source path.
1687 (If that fails, we'll just fall back on the original
1688 filename. Not much more we can do...)
1690 if (!source_full_path_of (exec_file, &full_exec_path))
1691 full_exec_path = savestring (exec_file, strlen (exec_file));
1693 exec_file_attach (full_exec_path, from_tty);
1694 symbol_file_command (full_exec_path, from_tty);
1701 /* Add shared library symbols from the newly attached process, if any. */
1702 SOLIB_ADD ((char *) 0, from_tty, ¤t_target);
1703 re_enable_breakpoints_in_shlibs ();
1707 /* Take any necessary post-attaching actions for this platform.
1709 target_post_attach (inferior_pid);
1719 * takes a program previously attached to and detaches it.
1720 * The program resumes execution and will no longer stop
1721 * on signals, etc. We better not have left any breakpoints
1722 * in the program or it'll die when it hits one. For this
1723 * to work, it may be necessary for the process to have been
1724 * previously attached. It *might* work if the program was
1725 * started via the normal ptrace (PTRACE_TRACEME).
1729 detach_command (args, from_tty)
1733 dont_repeat (); /* Not for the faint of heart */
1734 target_detach (args, from_tty);
1735 #if defined(SOLIB_RESTART)
1742 /* Stop the execution of the target while running in async mode, in
1745 interrupt_target_command (args, from_tty)
1749 if (event_loop_p && target_can_async_p ())
1751 dont_repeat (); /* Not for the faint of heart */
1758 float_info (addr_exp, from_tty)
1765 printf_filtered ("No floating point info available for this processor.\n");
1771 unset_command (args, from_tty)
1775 printf_filtered ("\"unset\" must be followed by the name of ");
1776 printf_filtered ("an unset subcommand.\n");
1777 help_list (unsetlist, "unset ", -1, gdb_stdout);
1781 _initialize_infcmd ()
1783 struct cmd_list_element *c;
1785 add_com ("tty", class_run, tty_command,
1786 "Set terminal for future runs of program being debugged.");
1789 (add_set_cmd ("args", class_run, var_string_noescape,
1790 (char *) &inferior_args,
1791 "Set argument list to give program being debugged when it is started.\n\
1792 Follow this command with any number of args, to be passed to the program.",
1797 ("environment", no_class, environment_info,
1798 "The environment to give the program, or one variable's value.\n\
1799 With an argument VAR, prints the value of environment variable VAR to\n\
1800 give the program being debugged. With no arguments, prints the entire\n\
1801 environment to be given to the program.", &showlist);
1802 c->completer = noop_completer;
1804 add_prefix_cmd ("unset", no_class, unset_command,
1805 "Complement to certain \"set\" commands",
1806 &unsetlist, "unset ", 0, &cmdlist);
1808 c = add_cmd ("environment", class_run, unset_environment_command,
1809 "Cancel environment variable VAR for the program.\n\
1810 This does not affect the program until the next \"run\" command.",
1812 c->completer = noop_completer;
1814 c = add_cmd ("environment", class_run, set_environment_command,
1815 "Set environment variable value to give the program.\n\
1816 Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
1817 VALUES of environment variables are uninterpreted strings.\n\
1818 This does not affect the program until the next \"run\" command.",
1820 c->completer = noop_completer;
1822 add_com ("path", class_files, path_command,
1823 "Add directory DIR(s) to beginning of search path for object files.\n\
1824 $cwd in the path means the current working directory.\n\
1825 This path is equivalent to the $PATH shell variable. It is a list of\n\
1826 directories, separated by colons. These directories are searched to find\n\
1827 fully linked executable files and separately compiled object files as needed.");
1829 c = add_cmd ("paths", no_class, path_info,
1830 "Current search path for finding object files.\n\
1831 $cwd in the path means the current working directory.\n\
1832 This path is equivalent to the $PATH shell variable. It is a list of\n\
1833 directories, separated by colons. These directories are searched to find\n\
1834 fully linked executable files and separately compiled object files as needed.",
1836 c->completer = noop_completer;
1838 add_com ("attach", class_run, attach_command,
1839 "Attach to a process or file outside of GDB.\n\
1840 This command attaches to another target, of the same type as your last\n\
1841 \"target\" command (\"info files\" will show your target stack).\n\
1842 The command may take as argument a process id or a device file.\n\
1843 For a process id, you must have permission to send the process a signal,\n\
1844 and it must have the same effective uid as the debugger.\n\
1845 When using \"attach\" with a process id, the debugger finds the\n\
1846 program running in the process, looking first in the current working\n\
1847 directory, or (if not found there) using the source file search path\n\
1848 (see the \"directory\" command). You can also use the \"file\" command\n\
1849 to specify the program, and to load its symbol table.");
1851 add_com ("detach", class_run, detach_command,
1852 "Detach a process or file previously attached.\n\
1853 If a process, it is no longer traced, and it continues its execution. If\n\
1854 you were debugging a file, the file is closed and gdb no longer accesses it.");
1856 add_com ("signal", class_run, signal_command,
1857 "Continue program giving it signal specified by the argument.\n\
1858 An argument of \"0\" means continue program without giving it a signal.");
1860 add_com ("stepi", class_run, stepi_command,
1861 "Step one instruction exactly.\n\
1862 Argument N means do this N times (or till program stops for another reason).");
1863 add_com_alias ("si", "stepi", class_alias, 0);
1865 add_com ("nexti", class_run, nexti_command,
1866 "Step one instruction, but proceed through subroutine calls.\n\
1867 Argument N means do this N times (or till program stops for another reason).");
1868 add_com_alias ("ni", "nexti", class_alias, 0);
1870 add_com ("finish", class_run, finish_command,
1871 "Execute until selected stack frame returns.\n\
1872 Upon return, the value returned is printed and put in the value history.");
1874 add_com ("next", class_run, next_command,
1875 "Step program, proceeding through subroutine calls.\n\
1876 Like the \"step\" command as long as subroutine calls do not happen;\n\
1877 when they do, the call is treated as one instruction.\n\
1878 Argument N means do this N times (or till program stops for another reason).");
1879 add_com_alias ("n", "next", class_run, 1);
1881 add_com_alias ("S", "next", class_run, 1);
1883 add_com ("step", class_run, step_command,
1884 "Step program until it reaches a different source line.\n\
1885 Argument N means do this N times (or till program stops for another reason).");
1886 add_com_alias ("s", "step", class_run, 1);
1888 add_com ("until", class_run, until_command,
1889 "Execute until the program reaches a source line greater than the current\n\
1890 or a specified line or address or function (same args as break command).\n\
1891 Execution will also stop upon exit from the current stack frame.");
1892 add_com_alias ("u", "until", class_run, 1);
1894 add_com ("jump", class_run, jump_command,
1895 "Continue program being debugged at specified line or address.\n\
1896 Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
1897 for an address to start at.");
1900 add_com ("go", class_run, go_command,
1901 "Usage: go <location>\n\
1902 Continue program being debugged, stopping at specified line or \n\
1904 Give as argument either LINENUM or *ADDR, where ADDR is an \n\
1905 expression for an address to start at.\n\
1906 This command is a combination of tbreak and jump.");
1909 add_com_alias ("g", "go", class_run, 1);
1911 add_com ("continue", class_run, continue_command,
1912 "Continue program being debugged, after signal or breakpoint.\n\
1913 If proceeding from breakpoint, a number N may be used as an argument,\n\
1914 which means to set the ignore count of that breakpoint to N - 1 (so that\n\
1915 the breakpoint won't break until the Nth time it is reached).");
1916 add_com_alias ("c", "cont", class_run, 1);
1917 add_com_alias ("fg", "cont", class_run, 1);
1919 add_com ("run", class_run, run_command,
1920 "Start debugged program. You may specify arguments to give it.\n\
1921 Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
1922 Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\
1923 With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\
1924 To cancel previous arguments and run with no arguments,\n\
1925 use \"set args\" without arguments.");
1926 add_com_alias ("r", "run", class_run, 1);
1928 add_com ("R", class_run, run_no_args_command,
1929 "Start debugged program with no arguments.");
1931 add_com ("interrupt", class_run, interrupt_target_command,
1932 "Interrupt the execution of the debugged program.");
1934 add_info ("registers", nofp_registers_info,
1935 "List of integer registers and their contents, for selected stack frame.\n\
1936 Register name as argument means describe only that register.");
1939 add_com ("lr", class_info, nofp_registers_info,
1940 "List of integer registers and their contents, for selected stack frame.\n\
1941 Register name as argument means describe only that register.");
1942 add_info ("all-registers", all_registers_info,
1943 "List of all registers and their contents, for selected stack frame.\n\
1944 Register name as argument means describe only that register.");
1946 add_info ("program", program_info,
1947 "Execution status of the program.");
1949 add_info ("float", float_info,
1950 "Print the status of the floating point unit\n");
1952 inferior_args = savestring ("", 1); /* Initially no args */
1953 inferior_environ = make_environ ();
1954 init_environ (inferior_environ);