349 lines
10 KiB
C
349 lines
10 KiB
C
/* MI Command Set - stack commands.
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Copyright 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions (a Red Hat company).
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "target.h"
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#include "frame.h"
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#include "value.h"
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#include "mi-cmds.h"
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#include "ui-out.h"
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#include "symtab.h"
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#include "block.h"
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#include "stack.h"
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#include "dictionary.h"
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#include "gdb_string.h"
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static void list_args_or_locals (int locals, int values, struct frame_info *fi);
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/* Print a list of the stack frames. Args can be none, in which case
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we want to print the whole backtrace, or a pair of numbers
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specifying the frame numbers at which to start and stop the
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display. If the two numbers are equal, a single frame will be
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displayed. */
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enum mi_cmd_result
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mi_cmd_stack_list_frames (char *command, char **argv, int argc)
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{
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int frame_low;
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int frame_high;
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int i;
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struct cleanup *cleanup_stack;
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struct frame_info *fi;
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if (!target_has_stack)
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error ("mi_cmd_stack_list_frames: No stack.");
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if (argc > 2 || argc == 1)
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error ("mi_cmd_stack_list_frames: Usage: [FRAME_LOW FRAME_HIGH]");
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if (argc == 2)
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{
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frame_low = atoi (argv[0]);
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frame_high = atoi (argv[1]);
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}
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else
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{
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/* Called with no arguments, it means we want the whole
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backtrace. */
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frame_low = -1;
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frame_high = -1;
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}
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/* Let's position fi on the frame at which to start the
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display. Could be the innermost frame if the whole stack needs
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displaying, or if frame_low is 0. */
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for (i = 0, fi = get_current_frame ();
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fi && i < frame_low;
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i++, fi = get_prev_frame (fi));
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if (fi == NULL)
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error ("mi_cmd_stack_list_frames: Not enough frames in stack.");
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cleanup_stack = make_cleanup_ui_out_list_begin_end (uiout, "stack");
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/* Now let;s print the frames up to frame_high, or until there are
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frames in the stack. */
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for (;
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fi && (i <= frame_high || frame_high == -1);
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i++, fi = get_prev_frame (fi))
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{
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QUIT;
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/* level == i: always print the level 'i'
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source == LOC_AND_ADDRESS: print the location and the address
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always, even for level 0.
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args == 0: don't print the arguments. */
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print_frame_info (fi /* frame info */ ,
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i /* level */ ,
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LOC_AND_ADDRESS /* source */ ,
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0 /* args */ );
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}
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do_cleanups (cleanup_stack);
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if (i < frame_high)
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error ("mi_cmd_stack_list_frames: Not enough frames in stack.");
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_stack_info_depth (char *command, char **argv, int argc)
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{
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int frame_high;
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int i;
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struct frame_info *fi;
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if (!target_has_stack)
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error ("mi_cmd_stack_info_depth: No stack.");
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if (argc > 1)
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error ("mi_cmd_stack_info_depth: Usage: [MAX_DEPTH]");
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if (argc == 1)
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frame_high = atoi (argv[0]);
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else
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/* Called with no arguments, it means we want the real depth of
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the stack. */
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frame_high = -1;
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for (i = 0, fi = get_current_frame ();
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fi && (i < frame_high || frame_high == -1);
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i++, fi = get_prev_frame (fi))
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QUIT;
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ui_out_field_int (uiout, "depth", i);
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return MI_CMD_DONE;
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}
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/* Print a list of the locals for the current frame. With argument of
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0, print only the names, with argument of 1 print also the
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values. */
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enum mi_cmd_result
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mi_cmd_stack_list_locals (char *command, char **argv, int argc)
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{
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struct frame_info *frame;
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enum print_values print_values;
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if (argc != 1)
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error ("mi_cmd_stack_list_locals: Usage: PRINT_VALUES");
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frame = get_selected_frame ();
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if (strcmp (argv[0], "0") == 0
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|| strcmp (argv[0], "--no-values") == 0)
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print_values = PRINT_NO_VALUES;
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else if (strcmp (argv[0], "1") == 0
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|| strcmp (argv[0], "--all-values") == 0)
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print_values = PRINT_ALL_VALUES;
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else if (strcmp (argv[0], "2") == 0
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|| strcmp (argv[0], "--simple-values") == 0)
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print_values = PRINT_SIMPLE_VALUES;
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else
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error ("Unknown value for PRINT_VALUES: must be: 0 or \"--no-values\", 1 or \"--all-values\", 2 or \"--simple-values\"");
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list_args_or_locals (1, print_values, frame);
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return MI_CMD_DONE;
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}
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/* Print a list of the arguments for the current frame. With argument
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of 0, print only the names, with argument of 1 print also the
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values. */
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enum mi_cmd_result
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mi_cmd_stack_list_args (char *command, char **argv, int argc)
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{
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int frame_low;
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int frame_high;
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int i;
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struct frame_info *fi;
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struct cleanup *cleanup_stack_args;
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if (argc < 1 || argc > 3 || argc == 2)
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error ("mi_cmd_stack_list_args: Usage: PRINT_VALUES [FRAME_LOW FRAME_HIGH]");
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if (argc == 3)
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{
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frame_low = atoi (argv[1]);
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frame_high = atoi (argv[2]);
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}
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else
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{
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/* Called with no arguments, it means we want args for the whole
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backtrace. */
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frame_low = -1;
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frame_high = -1;
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}
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/* Let's position fi on the frame at which to start the
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display. Could be the innermost frame if the whole stack needs
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displaying, or if frame_low is 0. */
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for (i = 0, fi = get_current_frame ();
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fi && i < frame_low;
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i++, fi = get_prev_frame (fi));
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if (fi == NULL)
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error ("mi_cmd_stack_list_args: Not enough frames in stack.");
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cleanup_stack_args = make_cleanup_ui_out_list_begin_end (uiout, "stack-args");
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/* Now let's print the frames up to frame_high, or until there are
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frames in the stack. */
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for (;
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fi && (i <= frame_high || frame_high == -1);
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i++, fi = get_prev_frame (fi))
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{
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struct cleanup *cleanup_frame;
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QUIT;
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cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
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ui_out_field_int (uiout, "level", i);
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list_args_or_locals (0, atoi (argv[0]), fi);
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do_cleanups (cleanup_frame);
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}
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do_cleanups (cleanup_stack_args);
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if (i < frame_high)
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error ("mi_cmd_stack_list_args: Not enough frames in stack.");
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return MI_CMD_DONE;
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}
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/* Print a list of the locals or the arguments for the currently
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selected frame. If the argument passed is 0, printonly the names
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of the variables, if an argument of 1 is passed, print the values
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as well. */
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static void
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list_args_or_locals (int locals, int values, struct frame_info *fi)
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{
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struct block *block;
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struct symbol *sym;
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struct dict_iterator iter;
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int nsyms;
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struct cleanup *cleanup_list;
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static struct ui_stream *stb = NULL;
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struct type *type;
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stb = ui_out_stream_new (uiout);
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block = get_frame_block (fi, 0);
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cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, locals ? "locals" : "args");
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while (block != 0)
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{
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ALL_BLOCK_SYMBOLS (block, iter, sym)
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{
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int print_me = 0;
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switch (SYMBOL_CLASS (sym))
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{
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default:
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case LOC_UNDEF: /* catches errors */
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case LOC_CONST: /* constant */
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case LOC_TYPEDEF: /* local typedef */
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case LOC_LABEL: /* local label */
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case LOC_BLOCK: /* local function */
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case LOC_CONST_BYTES: /* loc. byte seq. */
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case LOC_UNRESOLVED: /* unresolved static */
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case LOC_OPTIMIZED_OUT: /* optimized out */
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print_me = 0;
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break;
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case LOC_ARG: /* argument */
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case LOC_REF_ARG: /* reference arg */
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case LOC_REGPARM: /* register arg */
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case LOC_REGPARM_ADDR: /* indirect register arg */
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case LOC_LOCAL_ARG: /* stack arg */
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case LOC_BASEREG_ARG: /* basereg arg */
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case LOC_COMPUTED_ARG: /* arg with computed location */
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if (!locals)
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print_me = 1;
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break;
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case LOC_LOCAL: /* stack local */
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case LOC_BASEREG: /* basereg local */
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case LOC_STATIC: /* static */
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case LOC_REGISTER: /* register */
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case LOC_COMPUTED: /* computed location */
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if (locals)
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print_me = 1;
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break;
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}
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if (print_me)
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{
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struct cleanup *cleanup_tuple = NULL;
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struct symbol *sym2;
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if (values != PRINT_NO_VALUES)
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cleanup_tuple =
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make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
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ui_out_field_string (uiout, "name", SYMBOL_PRINT_NAME (sym));
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if (!locals)
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sym2 = lookup_symbol (SYMBOL_NATURAL_NAME (sym),
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block, VAR_DOMAIN,
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(int *) NULL,
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(struct symtab **) NULL);
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else
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sym2 = sym;
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switch (values)
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{
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case PRINT_SIMPLE_VALUES:
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type = check_typedef (sym2->type);
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type_print (sym2->type, "", stb->stream, -1);
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ui_out_field_stream (uiout, "type", stb);
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if (TYPE_CODE (type) != TYPE_CODE_ARRAY
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&& TYPE_CODE (type) != TYPE_CODE_STRUCT
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&& TYPE_CODE (type) != TYPE_CODE_UNION)
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{
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print_variable_value (sym2, fi, stb->stream);
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ui_out_field_stream (uiout, "value", stb);
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}
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do_cleanups (cleanup_tuple);
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break;
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case PRINT_ALL_VALUES:
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print_variable_value (sym2, fi, stb->stream);
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ui_out_field_stream (uiout, "value", stb);
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do_cleanups (cleanup_tuple);
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break;
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}
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}
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}
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if (BLOCK_FUNCTION (block))
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break;
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else
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block = BLOCK_SUPERBLOCK (block);
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}
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do_cleanups (cleanup_list);
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ui_out_stream_delete (stb);
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}
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enum mi_cmd_result
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mi_cmd_stack_select_frame (char *command, char **argv, int argc)
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{
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if (!target_has_stack)
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error ("mi_cmd_stack_select_frame: No stack.");
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if (argc > 1)
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error ("mi_cmd_stack_select_frame: Usage: [FRAME_SPEC]");
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/* with no args, don't change frame */
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if (argc == 0)
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select_frame_command (0, 1 /* not used */ );
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else
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select_frame_command (argv[0], 1 /* not used */ );
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return MI_CMD_DONE;
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}
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