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7dc15bb750
Let print_frame_nameless_args decide whether there are any, laying groundwork for possibly later printing 29K args for functions where we have tag words but no symbols.
2034 lines
52 KiB
C
2034 lines
52 KiB
C
/* Print values for GNU debugger GDB.
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Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
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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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#include <string.h>
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#include "frame.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "value.h"
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#include "language.h"
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#include "expression.h"
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#include "gdbcore.h"
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#include "gdbcmd.h"
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#include "target.h"
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#include "breakpoint.h"
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#include "demangle.h"
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extern int asm_demangle; /* Whether to demangle syms in asm printouts */
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extern int addressprint; /* Whether to print hex addresses in HLL " */
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struct format_data
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{
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int count;
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char format;
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char size;
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};
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/* Last specified output format. */
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static char last_format = 'x';
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/* Last specified examination size. 'b', 'h', 'w' or `q'. */
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static char last_size = 'w';
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/* Default address to examine next. */
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static CORE_ADDR next_address;
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/* Last address examined. */
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static CORE_ADDR last_examine_address;
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/* Contents of last address examined.
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This is not valid past the end of the `x' command! */
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static value last_examine_value;
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/* Number of auto-display expression currently being displayed.
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So that we can deleted it if we get an error or a signal within it.
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-1 when not doing one. */
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int current_display_number;
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/* Flag to low-level print routines that this value is being printed
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in an epoch window. We'd like to pass this as a parameter, but
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every routine would need to take it. Perhaps we can encapsulate
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this in the I/O stream once we have GNU stdio. */
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int inspect_it = 0;
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struct display
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{
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/* Chain link to next auto-display item. */
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struct display *next;
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/* Expression to be evaluated and displayed. */
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struct expression *exp;
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/* Item number of this auto-display item. */
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int number;
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/* Display format specified. */
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||
struct format_data format;
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/* Innermost block required by this expression when evaluated */
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struct block *block;
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/* Status of this display (enabled or disabled) */
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enum enable status;
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};
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/* Chain of expressions whose values should be displayed
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automatically each time the program stops. */
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static struct display *display_chain;
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static int display_number;
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/* Prototypes for local functions */
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static void
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delete_display PARAMS ((int));
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static void
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enable_display PARAMS ((char *, int));
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static void
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disable_display_command PARAMS ((char *, int));
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static void
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disassemble_command PARAMS ((char *, int));
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static int
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containing_function_bounds PARAMS ((CORE_ADDR, CORE_ADDR *, CORE_ADDR *));
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static void
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printf_command PARAMS ((char *, int));
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static void
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print_frame_nameless_args PARAMS ((CORE_ADDR, long, int, int, FILE *));
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static void
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display_info PARAMS ((char *, int));
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static void
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do_one_display PARAMS ((struct display *));
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static void
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undisplay_command PARAMS ((char *, int));
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static void
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free_display PARAMS ((struct display *));
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static void
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display_command PARAMS ((char *, int));
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static void
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x_command PARAMS ((char *, int));
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static void
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address_info PARAMS ((char *, int));
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static void
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set_command PARAMS ((char *, int));
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static void
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output_command PARAMS ((char *, int));
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static void
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call_command PARAMS ((char *, int));
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static void
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inspect_command PARAMS ((char *, int));
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static void
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print_command PARAMS ((char *, int));
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static void
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print_command_1 PARAMS ((char *, int, int));
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static void
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validate_format PARAMS ((struct format_data, char *));
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static void
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do_examine PARAMS ((struct format_data, CORE_ADDR));
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static void
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print_formatted PARAMS ((value, int, int));
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static struct format_data
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decode_format PARAMS ((char **, int, int));
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/* Decode a format specification. *STRING_PTR should point to it.
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OFORMAT and OSIZE are used as defaults for the format and size
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if none are given in the format specification.
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If OSIZE is zero, then the size field of the returned value
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should be set only if a size is explicitly specified by the
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user.
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The structure returned describes all the data
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found in the specification. In addition, *STRING_PTR is advanced
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past the specification and past all whitespace following it. */
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static struct format_data
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decode_format (string_ptr, oformat, osize)
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char **string_ptr;
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int oformat;
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int osize;
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{
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struct format_data val;
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register char *p = *string_ptr;
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val.format = '?';
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val.size = '?';
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val.count = 1;
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if (*p >= '0' && *p <= '9')
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val.count = atoi (p);
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while (*p >= '0' && *p <= '9') p++;
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/* Now process size or format letters that follow. */
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while (1)
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{
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if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
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val.size = *p++;
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#ifdef LONG_LONG
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else if (*p == 'l')
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{
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val.size = 'g';
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p++;
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}
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#endif
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else if (*p >= 'a' && *p <= 'z')
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val.format = *p++;
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else
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break;
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}
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#ifndef LONG_LONG
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/* Make sure 'g' size is not used on integer types.
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Well, actually, we can handle hex. */
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if (val.size == 'g' && val.format != 'f' && val.format != 'x')
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val.size = 'w';
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#endif
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while (*p == ' ' || *p == '\t') p++;
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*string_ptr = p;
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/* Set defaults for format and size if not specified. */
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if (val.format == '?')
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{
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if (val.size == '?')
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{
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/* Neither has been specified. */
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val.format = oformat;
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val.size = osize;
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}
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else
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/* If a size is specified, any format makes a reasonable
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default except 'i'. */
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val.format = oformat == 'i' ? 'x' : oformat;
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}
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else if (val.size == '?')
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switch (val.format)
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{
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case 'a':
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case 's':
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/* Addresses must be words. */
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val.size = osize ? 'w' : osize;
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break;
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case 'f':
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/* Floating point has to be word or giantword. */
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if (osize == 'w' || osize == 'g')
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val.size = osize;
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else
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/* Default it to giantword if the last used size is not
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appropriate. */
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val.size = osize ? 'g' : osize;
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break;
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case 'c':
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/* Characters default to one byte. */
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val.size = osize ? 'b' : osize;
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break;
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default:
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/* The default is the size most recently specified. */
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val.size = osize;
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}
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return val;
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}
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/* Print value VAL on stdout according to FORMAT, a letter or 0.
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Do not end with a newline.
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0 means print VAL according to its own type.
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SIZE is the letter for the size of datum being printed.
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This is used to pad hex numbers so they line up. */
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static void
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print_formatted (val, format, size)
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register value val;
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register int format;
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int size;
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{
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int len = TYPE_LENGTH (VALUE_TYPE (val));
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if (VALUE_LVAL (val) == lval_memory)
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next_address = VALUE_ADDRESS (val) + len;
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switch (format)
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{
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case 's':
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next_address = VALUE_ADDRESS (val)
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+ value_print (value_addr (val), stdout, format, Val_pretty_default);
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break;
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case 'i':
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wrap_here (""); /* Force output out, print_insn not using _filtered */
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next_address = VALUE_ADDRESS (val)
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+ print_insn (VALUE_ADDRESS (val), stdout);
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break;
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default:
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if (format == 0
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|| TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_ARRAY
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|| TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_STRING
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|| TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_STRUCT
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|| TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_UNION
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|| VALUE_REPEATED (val))
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value_print (val, stdout, format, Val_pretty_default);
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else
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print_scalar_formatted (VALUE_CONTENTS (val), VALUE_TYPE (val),
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format, size, stdout);
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}
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}
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/* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
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according to letters FORMAT and SIZE on STREAM.
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FORMAT may not be zero. Formats s and i are not supported at this level.
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This is how the elements of an array or structure are printed
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with a format. */
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void
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print_scalar_formatted (valaddr, type, format, size, stream)
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char *valaddr;
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struct type *type;
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int format;
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int size;
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FILE *stream;
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{
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LONGEST val_long;
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int len = TYPE_LENGTH (type);
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if (size == 'g' && sizeof (LONGEST) < 8
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&& format == 'x')
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{
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/* ok, we're going to have to get fancy here. Assumption: a
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long is four bytes. FIXME. */
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unsigned long v1, v2;
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v1 = unpack_long (builtin_type_long, valaddr);
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v2 = unpack_long (builtin_type_long, valaddr + 4);
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#if TARGET_BYTE_ORDER == LITTLE_ENDIAN
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/* Swap the two for printing */
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{
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unsigned long tmp;
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tmp = v1;
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v1 = v2;
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v2 = tmp;
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}
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#endif
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switch (format)
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{
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case 'x':
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fprintf_filtered (stream, local_hex_format_custom("08x%08"), v1, v2);
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break;
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default:
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error ("Output size \"g\" unimplemented for format \"%c\".",
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format);
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}
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return;
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}
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val_long = unpack_long (type, valaddr);
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/* If value is unsigned, truncate it in case negative. */
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if (format != 'd')
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{
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if (len == sizeof (char))
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val_long &= (1 << 8 * sizeof(char)) - 1;
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else if (len == sizeof (short))
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val_long &= (1 << 8 * sizeof(short)) - 1;
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else if (len == sizeof (long))
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val_long &= (unsigned long) - 1;
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}
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switch (format)
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{
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case 'x':
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if (!size)
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{
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/* no size specified, like in print. Print varying # of digits. */
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#if defined (LONG_LONG)
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fprintf_filtered (stream, local_hex_format_custom("ll"), val_long);
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#else /* not LONG_LONG. */
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fprintf_filtered (stream, local_hex_format_custom("l"), val_long);
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#endif /* not LONG_LONG. */
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}
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else
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#if defined (LONG_LONG)
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switch (size)
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{
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case 'b':
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fprintf_filtered (stream, local_hex_format_custom("02ll"), val_long);
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break;
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case 'h':
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fprintf_filtered (stream, local_hex_format_custom("04ll"), val_long);
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break;
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case 'w':
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fprintf_filtered (stream, local_hex_format_custom("08ll"), val_long);
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break;
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case 'g':
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fprintf_filtered (stream, local_hex_format_custom("016ll"), val_long);
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break;
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default:
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error ("Undefined output size \"%c\".", size);
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}
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#else /* not LONG_LONG. */
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switch (size)
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{
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case 'b':
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fprintf_filtered (stream, local_hex_format_custom("02"), val_long);
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break;
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case 'h':
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fprintf_filtered (stream, local_hex_format_custom("04"), val_long);
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break;
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case 'w':
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fprintf_filtered (stream, local_hex_format_custom("08"), val_long);
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break;
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case 'g':
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fprintf_filtered (stream, local_hex_format_custom("016"), val_long);
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break;
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default:
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error ("Undefined output size \"%c\".", size);
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}
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#endif /* not LONG_LONG */
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break;
|
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|
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case 'd':
|
||
#ifdef LONG_LONG
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fprintf_filtered (stream, local_decimal_format_custom("ll"), val_long);
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#else
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fprintf_filtered (stream, local_decimal_format(), val_long);
|
||
#endif
|
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break;
|
||
|
||
case 'u':
|
||
#ifdef LONG_LONG
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fprintf_filtered (stream, "%llu", val_long);
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#else
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fprintf_filtered (stream, "%u", val_long);
|
||
#endif
|
||
break;
|
||
|
||
case 'o':
|
||
if (val_long)
|
||
#ifdef LONG_LONG
|
||
fprintf_filtered (stream, local_octal_format_custom("ll"), val_long);
|
||
#else
|
||
fprintf_filtered (stream, local_octal_format(), val_long);
|
||
#endif
|
||
else
|
||
fprintf_filtered (stream, "0");
|
||
break;
|
||
|
||
case 'a':
|
||
print_address (unpack_pointer (type, valaddr), stream);
|
||
break;
|
||
|
||
case 'c':
|
||
value_print (value_from_longest (builtin_type_char, val_long), stream, 0,
|
||
Val_pretty_default);
|
||
break;
|
||
|
||
case 'f':
|
||
if (len == sizeof (float))
|
||
type = builtin_type_float;
|
||
else if (len == sizeof (double))
|
||
type = builtin_type_double;
|
||
print_floating (valaddr, type, stream);
|
||
break;
|
||
|
||
case 0:
|
||
abort ();
|
||
|
||
case 't':
|
||
/* Binary; 't' stands for "two". */
|
||
{
|
||
char bits[8*(sizeof val_long) + 1];
|
||
char *cp = bits;
|
||
int width;
|
||
|
||
if (!size)
|
||
width = 8*(sizeof val_long);
|
||
else
|
||
switch (size)
|
||
{
|
||
case 'b':
|
||
width = 8;
|
||
break;
|
||
case 'h':
|
||
width = 16;
|
||
break;
|
||
case 'w':
|
||
width = 32;
|
||
break;
|
||
case 'g':
|
||
width = 64;
|
||
break;
|
||
default:
|
||
error ("Undefined output size \"%c\".", size);
|
||
}
|
||
|
||
bits[width] = '\0';
|
||
while (width-- > 0)
|
||
{
|
||
bits[width] = (val_long & 1) ? '1' : '0';
|
||
val_long >>= 1;
|
||
}
|
||
if (!size)
|
||
{
|
||
while (*cp && *cp == '0')
|
||
cp++;
|
||
if (*cp == '\0')
|
||
cp--;
|
||
}
|
||
fprintf_filtered (stream, local_binary_format_prefix());
|
||
fprintf_filtered (stream, cp);
|
||
fprintf_filtered (stream, local_binary_format_suffix());
|
||
}
|
||
break;
|
||
|
||
default:
|
||
error ("Undefined output format \"%c\".", format);
|
||
}
|
||
}
|
||
|
||
/* Specify default address for `x' command.
|
||
`info lines' uses this. */
|
||
|
||
void
|
||
set_next_address (addr)
|
||
CORE_ADDR addr;
|
||
{
|
||
next_address = addr;
|
||
|
||
/* Make address available to the user as $_. */
|
||
set_internalvar (lookup_internalvar ("_"),
|
||
value_from_longest (lookup_pointer_type (builtin_type_void),
|
||
(LONGEST) addr));
|
||
}
|
||
|
||
/* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
|
||
after LEADIN. Print nothing if no symbolic name is found nearby.
|
||
DO_DEMANGLE controls whether to print a symbol in its native "raw" form,
|
||
or to interpret it as a possible C++ name and convert it back to source
|
||
form. However note that DO_DEMANGLE can be overridden by the specific
|
||
settings of the demangle and asm_demangle variables. */
|
||
|
||
void
|
||
print_address_symbolic (addr, stream, do_demangle, leadin)
|
||
CORE_ADDR addr;
|
||
FILE *stream;
|
||
int do_demangle;
|
||
char *leadin;
|
||
{
|
||
int name_location;
|
||
register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (addr);
|
||
|
||
/* If nothing comes out, don't print anything symbolic. */
|
||
|
||
if (msymbol == NULL)
|
||
return;
|
||
|
||
fputs_filtered (leadin, stream);
|
||
fputs_filtered ("<", stream);
|
||
if (do_demangle)
|
||
fputs_filtered (SYMBOL_SOURCE_NAME (msymbol), stream);
|
||
else
|
||
fputs_filtered (SYMBOL_LINKAGE_NAME (msymbol), stream);
|
||
name_location = SYMBOL_VALUE_ADDRESS (msymbol);
|
||
if (addr - name_location)
|
||
fprintf_filtered (stream, "+%d>", addr - name_location);
|
||
else
|
||
fputs_filtered (">", stream);
|
||
}
|
||
|
||
/* Print address ADDR symbolically on STREAM.
|
||
First print it as a number. Then perhaps print
|
||
<SYMBOL + OFFSET> after the number. */
|
||
|
||
void
|
||
print_address (addr, stream)
|
||
CORE_ADDR addr;
|
||
FILE *stream;
|
||
{
|
||
#ifdef ADDR_BITS_REMOVE
|
||
fprintf_filtered (stream, local_hex_format(), ADDR_BITS_REMOVE(addr));
|
||
#else
|
||
fprintf_filtered (stream, local_hex_format(), addr);
|
||
#endif
|
||
print_address_symbolic (addr, stream, asm_demangle, " ");
|
||
}
|
||
|
||
/* Print address ADDR symbolically on STREAM. Parameter DEMANGLE
|
||
controls whether to print the symbolic name "raw" or demangled.
|
||
Global setting "addressprint" controls whether to print hex address
|
||
or not. */
|
||
|
||
void
|
||
print_address_demangle (addr, stream, do_demangle)
|
||
CORE_ADDR addr;
|
||
FILE *stream;
|
||
int do_demangle;
|
||
{
|
||
if (addr == 0) {
|
||
fprintf_filtered (stream, "0");
|
||
} else if (addressprint) {
|
||
fprintf_filtered (stream, local_hex_format(), addr);
|
||
print_address_symbolic (addr, stream, do_demangle, " ");
|
||
} else {
|
||
print_address_symbolic (addr, stream, do_demangle, "");
|
||
}
|
||
}
|
||
|
||
|
||
/* Examine data at address ADDR in format FMT.
|
||
Fetch it from memory and print on stdout. */
|
||
|
||
static void
|
||
do_examine (fmt, addr)
|
||
struct format_data fmt;
|
||
CORE_ADDR addr;
|
||
{
|
||
register char format = 0;
|
||
register char size;
|
||
register int count = 1;
|
||
struct type *val_type;
|
||
register int i;
|
||
register int maxelts;
|
||
|
||
format = fmt.format;
|
||
size = fmt.size;
|
||
count = fmt.count;
|
||
next_address = addr;
|
||
|
||
/* String or instruction format implies fetch single bytes
|
||
regardless of the specified size. */
|
||
if (format == 's' || format == 'i')
|
||
size = 'b';
|
||
|
||
if (size == 'b')
|
||
val_type = builtin_type_char;
|
||
else if (size == 'h')
|
||
val_type = builtin_type_short;
|
||
else if (size == 'w')
|
||
val_type = builtin_type_long;
|
||
else if (size == 'g')
|
||
#ifndef LONG_LONG
|
||
val_type = builtin_type_double;
|
||
#else
|
||
val_type = builtin_type_long_long;
|
||
#endif
|
||
|
||
maxelts = 8;
|
||
if (size == 'w')
|
||
maxelts = 4;
|
||
if (size == 'g')
|
||
maxelts = 2;
|
||
if (format == 's' || format == 'i')
|
||
maxelts = 1;
|
||
|
||
/* Print as many objects as specified in COUNT, at most maxelts per line,
|
||
with the address of the next one at the start of each line. */
|
||
|
||
while (count > 0)
|
||
{
|
||
print_address (next_address, stdout);
|
||
printf_filtered (":");
|
||
for (i = maxelts;
|
||
i > 0 && count > 0;
|
||
i--, count--)
|
||
{
|
||
printf_filtered ("\t");
|
||
/* Note that print_formatted sets next_address for the next
|
||
object. */
|
||
last_examine_address = next_address;
|
||
last_examine_value = value_at (val_type, next_address);
|
||
print_formatted (last_examine_value, format, size);
|
||
}
|
||
printf_filtered ("\n");
|
||
fflush (stdout);
|
||
}
|
||
}
|
||
|
||
static void
|
||
validate_format (fmt, cmdname)
|
||
struct format_data fmt;
|
||
char *cmdname;
|
||
{
|
||
if (fmt.size != 0)
|
||
error ("Size letters are meaningless in \"%s\" command.", cmdname);
|
||
if (fmt.count != 1)
|
||
error ("Item count other than 1 is meaningless in \"%s\" command.",
|
||
cmdname);
|
||
if (fmt.format == 'i' || fmt.format == 's')
|
||
error ("Format letter \"%c\" is meaningless in \"%s\" command.",
|
||
fmt.format, cmdname);
|
||
}
|
||
|
||
/* Evaluate string EXP as an expression in the current language and
|
||
print the resulting value. EXP may contain a format specifier as the
|
||
first argument ("/x myvar" for example, to print myvar in hex).
|
||
*/
|
||
|
||
static void
|
||
print_command_1 (exp, inspect, voidprint)
|
||
char *exp;
|
||
int inspect;
|
||
int voidprint;
|
||
{
|
||
struct expression *expr;
|
||
register struct cleanup *old_chain = 0;
|
||
register char format = 0;
|
||
register value val;
|
||
struct format_data fmt;
|
||
int cleanup = 0;
|
||
|
||
/* Pass inspect flag to the rest of the print routines in a global (sigh). */
|
||
inspect_it = inspect;
|
||
|
||
if (exp && *exp == '/')
|
||
{
|
||
exp++;
|
||
fmt = decode_format (&exp, last_format, 0);
|
||
validate_format (fmt, "print");
|
||
last_format = format = fmt.format;
|
||
}
|
||
else
|
||
{
|
||
fmt.count = 1;
|
||
fmt.format = 0;
|
||
fmt.size = 0;
|
||
}
|
||
|
||
if (exp && *exp)
|
||
{
|
||
extern int objectprint;
|
||
struct type *type;
|
||
expr = parse_expression (exp);
|
||
old_chain = make_cleanup (free_current_contents, &expr);
|
||
cleanup = 1;
|
||
val = evaluate_expression (expr);
|
||
|
||
/* C++: figure out what type we actually want to print it as. */
|
||
type = VALUE_TYPE (val);
|
||
|
||
if (objectprint
|
||
&& ( TYPE_CODE (type) == TYPE_CODE_PTR
|
||
|| TYPE_CODE (type) == TYPE_CODE_REF)
|
||
&& ( TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT
|
||
|| TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_UNION))
|
||
{
|
||
value v;
|
||
|
||
v = value_from_vtable_info (val, TYPE_TARGET_TYPE (type));
|
||
if (v != 0)
|
||
{
|
||
val = v;
|
||
type = VALUE_TYPE (val);
|
||
}
|
||
}
|
||
}
|
||
else
|
||
val = access_value_history (0);
|
||
|
||
if (voidprint || (val && VALUE_TYPE (val) &&
|
||
TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_VOID))
|
||
{
|
||
int histindex = record_latest_value (val);
|
||
|
||
if (inspect)
|
||
printf ("\031(gdb-makebuffer \"%s\" %d '(\"", exp, histindex);
|
||
else
|
||
if (histindex >= 0) printf_filtered ("$%d = ", histindex);
|
||
|
||
print_formatted (val, format, fmt.size);
|
||
printf_filtered ("\n");
|
||
if (inspect)
|
||
printf("\") )\030");
|
||
}
|
||
|
||
if (cleanup)
|
||
do_cleanups (old_chain);
|
||
inspect_it = 0; /* Reset print routines to normal */
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
print_command (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
print_command_1 (exp, 0, 1);
|
||
}
|
||
|
||
/* Same as print, except in epoch, it gets its own window */
|
||
/* ARGSUSED */
|
||
static void
|
||
inspect_command (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
extern int epoch_interface;
|
||
|
||
print_command_1 (exp, epoch_interface, 1);
|
||
}
|
||
|
||
/* Same as print, except it doesn't print void results. */
|
||
/* ARGSUSED */
|
||
static void
|
||
call_command (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
print_command_1 (exp, 0, 0);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
output_command (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
struct expression *expr;
|
||
register struct cleanup *old_chain;
|
||
register char format = 0;
|
||
register value val;
|
||
struct format_data fmt;
|
||
|
||
if (exp && *exp == '/')
|
||
{
|
||
exp++;
|
||
fmt = decode_format (&exp, 0, 0);
|
||
validate_format (fmt, "output");
|
||
format = fmt.format;
|
||
}
|
||
|
||
expr = parse_expression (exp);
|
||
old_chain = make_cleanup (free_current_contents, &expr);
|
||
|
||
val = evaluate_expression (expr);
|
||
|
||
print_formatted (val, format, fmt.size);
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
set_command (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
struct expression *expr = parse_expression (exp);
|
||
register struct cleanup *old_chain
|
||
= make_cleanup (free_current_contents, &expr);
|
||
evaluate_expression (expr);
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
address_info (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
register struct symbol *sym;
|
||
register struct minimal_symbol *msymbol;
|
||
register long val;
|
||
register long basereg;
|
||
int is_a_field_of_this; /* C++: lookup_symbol sets this to nonzero
|
||
if exp is a field of `this'. */
|
||
|
||
if (exp == 0)
|
||
error ("Argument required.");
|
||
|
||
sym = lookup_symbol (exp, get_selected_block (), VAR_NAMESPACE,
|
||
&is_a_field_of_this, (struct symtab **)NULL);
|
||
if (sym == NULL)
|
||
{
|
||
if (is_a_field_of_this)
|
||
{
|
||
printf ("Symbol \"%s\" is a field of the local class variable `this'\n", exp);
|
||
return;
|
||
}
|
||
|
||
msymbol = lookup_minimal_symbol (exp, (struct objfile *) NULL);
|
||
|
||
if (msymbol != NULL)
|
||
printf ("Symbol \"%s\" is at %s in a file compiled without debugging.\n",
|
||
exp, local_hex_string(SYMBOL_VALUE_ADDRESS (msymbol)));
|
||
else
|
||
error ("No symbol \"%s\" in current context.", exp);
|
||
return;
|
||
}
|
||
|
||
printf ("Symbol \"%s\" is ", SYMBOL_NAME (sym));
|
||
val = SYMBOL_VALUE (sym);
|
||
basereg = SYMBOL_BASEREG (sym);
|
||
|
||
switch (SYMBOL_CLASS (sym))
|
||
{
|
||
case LOC_CONST:
|
||
case LOC_CONST_BYTES:
|
||
printf ("constant");
|
||
break;
|
||
|
||
case LOC_LABEL:
|
||
printf ("a label at address %s", local_hex_string(SYMBOL_VALUE_ADDRESS (sym)));
|
||
break;
|
||
|
||
case LOC_REGISTER:
|
||
printf ("a variable in register %s", reg_names[val]);
|
||
break;
|
||
|
||
case LOC_STATIC:
|
||
printf ("static storage at address %s", local_hex_string(SYMBOL_VALUE_ADDRESS (sym)));
|
||
break;
|
||
|
||
case LOC_REGPARM:
|
||
printf ("an argument in register %s", reg_names[val]);
|
||
break;
|
||
|
||
case LOC_ARG:
|
||
if (SYMBOL_BASEREG_VALID (sym))
|
||
{
|
||
printf ("an argument at offset %ld from register %s",
|
||
val, reg_names[basereg]);
|
||
}
|
||
else
|
||
{
|
||
printf ("an argument at offset %ld", val);
|
||
}
|
||
break;
|
||
|
||
case LOC_LOCAL_ARG:
|
||
if (SYMBOL_BASEREG_VALID (sym))
|
||
{
|
||
printf ("an argument at offset %ld from register %s",
|
||
val, reg_names[basereg]);
|
||
}
|
||
else
|
||
{
|
||
printf ("an argument at frame offset %ld", val);
|
||
}
|
||
break;
|
||
|
||
case LOC_LOCAL:
|
||
if (SYMBOL_BASEREG_VALID (sym))
|
||
{
|
||
printf ("a local variable at offset %ld from register %s",
|
||
val, reg_names[basereg]);
|
||
}
|
||
else
|
||
{
|
||
printf ("a local variable at frame offset %ld", val);
|
||
}
|
||
break;
|
||
|
||
case LOC_REF_ARG:
|
||
printf ("a reference argument at offset %ld", val);
|
||
break;
|
||
|
||
case LOC_TYPEDEF:
|
||
printf ("a typedef");
|
||
break;
|
||
|
||
case LOC_BLOCK:
|
||
printf ("a function at address %s",
|
||
local_hex_string(BLOCK_START (SYMBOL_BLOCK_VALUE (sym))));
|
||
break;
|
||
|
||
default:
|
||
printf ("of unknown (botched) type");
|
||
break;
|
||
}
|
||
printf (".\n");
|
||
}
|
||
|
||
static void
|
||
x_command (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
struct expression *expr;
|
||
struct format_data fmt;
|
||
struct cleanup *old_chain;
|
||
struct value *val;
|
||
|
||
fmt.format = last_format;
|
||
fmt.size = last_size;
|
||
fmt.count = 1;
|
||
|
||
if (exp && *exp == '/')
|
||
{
|
||
exp++;
|
||
fmt = decode_format (&exp, last_format, last_size);
|
||
}
|
||
|
||
/* If we have an expression, evaluate it and use it as the address. */
|
||
|
||
if (exp != 0 && *exp != 0)
|
||
{
|
||
expr = parse_expression (exp);
|
||
/* Cause expression not to be there any more
|
||
if this command is repeated with Newline.
|
||
But don't clobber a user-defined command's definition. */
|
||
if (from_tty)
|
||
*exp = 0;
|
||
old_chain = make_cleanup (free_current_contents, &expr);
|
||
val = evaluate_expression (expr);
|
||
if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF)
|
||
val = value_ind (val);
|
||
/* In rvalue contexts, such as this, functions are coerced into
|
||
pointers to functions. This makes "x/i main" work. */
|
||
if (/* last_format == 'i'
|
||
&& */ TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_FUNC
|
||
&& VALUE_LVAL (val) == lval_memory)
|
||
next_address = VALUE_ADDRESS (val);
|
||
else
|
||
next_address = value_as_pointer (val);
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
do_examine (fmt, next_address);
|
||
|
||
/* If the examine succeeds, we remember its size and format for next time. */
|
||
last_size = fmt.size;
|
||
last_format = fmt.format;
|
||
|
||
/* Set a couple of internal variables if appropriate. */
|
||
if (last_examine_value)
|
||
{
|
||
/* Make last address examined available to the user as $_. Use
|
||
the correct pointer type. */
|
||
set_internalvar (lookup_internalvar ("_"),
|
||
value_from_longest (
|
||
lookup_pointer_type (VALUE_TYPE (last_examine_value)),
|
||
(LONGEST) last_examine_address));
|
||
|
||
/* Make contents of last address examined available to the user as $__.*/
|
||
set_internalvar (lookup_internalvar ("__"), last_examine_value);
|
||
}
|
||
}
|
||
|
||
|
||
/* Add an expression to the auto-display chain.
|
||
Specify the expression. */
|
||
|
||
static void
|
||
display_command (exp, from_tty)
|
||
char *exp;
|
||
int from_tty;
|
||
{
|
||
struct format_data fmt;
|
||
register struct expression *expr;
|
||
register struct display *new;
|
||
|
||
if (exp == 0)
|
||
{
|
||
do_displays ();
|
||
return;
|
||
}
|
||
|
||
if (*exp == '/')
|
||
{
|
||
exp++;
|
||
fmt = decode_format (&exp, 0, 0);
|
||
if (fmt.size && fmt.format == 0)
|
||
fmt.format = 'x';
|
||
if (fmt.format == 'i' || fmt.format == 's')
|
||
fmt.size = 'b';
|
||
}
|
||
else
|
||
{
|
||
fmt.format = 0;
|
||
fmt.size = 0;
|
||
fmt.count = 0;
|
||
}
|
||
|
||
innermost_block = 0;
|
||
expr = parse_expression (exp);
|
||
|
||
new = (struct display *) xmalloc (sizeof (struct display));
|
||
|
||
new->exp = expr;
|
||
new->block = innermost_block;
|
||
new->next = display_chain;
|
||
new->number = ++display_number;
|
||
new->format = fmt;
|
||
new->status = enabled;
|
||
display_chain = new;
|
||
|
||
if (from_tty && target_has_execution)
|
||
do_one_display (new);
|
||
|
||
dont_repeat ();
|
||
}
|
||
|
||
static void
|
||
free_display (d)
|
||
struct display *d;
|
||
{
|
||
free ((PTR)d->exp);
|
||
free ((PTR)d);
|
||
}
|
||
|
||
/* Clear out the display_chain.
|
||
Done when new symtabs are loaded, since this invalidates
|
||
the types stored in many expressions. */
|
||
|
||
void
|
||
clear_displays ()
|
||
{
|
||
register struct display *d;
|
||
|
||
while ((d = display_chain) != NULL)
|
||
{
|
||
free ((PTR)d->exp);
|
||
display_chain = d->next;
|
||
free ((PTR)d);
|
||
}
|
||
}
|
||
|
||
/* Delete the auto-display number NUM. */
|
||
|
||
static void
|
||
delete_display (num)
|
||
int num;
|
||
{
|
||
register struct display *d1, *d;
|
||
|
||
if (!display_chain)
|
||
error ("No display number %d.", num);
|
||
|
||
if (display_chain->number == num)
|
||
{
|
||
d1 = display_chain;
|
||
display_chain = d1->next;
|
||
free_display (d1);
|
||
}
|
||
else
|
||
for (d = display_chain; ; d = d->next)
|
||
{
|
||
if (d->next == 0)
|
||
error ("No display number %d.", num);
|
||
if (d->next->number == num)
|
||
{
|
||
d1 = d->next;
|
||
d->next = d1->next;
|
||
free_display (d1);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Delete some values from the auto-display chain.
|
||
Specify the element numbers. */
|
||
|
||
static void
|
||
undisplay_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
register char *p = args;
|
||
register char *p1;
|
||
register int num;
|
||
|
||
if (args == 0)
|
||
{
|
||
if (query ("Delete all auto-display expressions? "))
|
||
clear_displays ();
|
||
dont_repeat ();
|
||
return;
|
||
}
|
||
|
||
while (*p)
|
||
{
|
||
p1 = p;
|
||
while (*p1 >= '0' && *p1 <= '9') p1++;
|
||
if (*p1 && *p1 != ' ' && *p1 != '\t')
|
||
error ("Arguments must be display numbers.");
|
||
|
||
num = atoi (p);
|
||
|
||
delete_display (num);
|
||
|
||
p = p1;
|
||
while (*p == ' ' || *p == '\t') p++;
|
||
}
|
||
dont_repeat ();
|
||
}
|
||
|
||
/* Display a single auto-display.
|
||
Do nothing if the display cannot be printed in the current context,
|
||
or if the display is disabled. */
|
||
|
||
static void
|
||
do_one_display (d)
|
||
struct display *d;
|
||
{
|
||
int within_current_scope;
|
||
|
||
if (d->status == disabled)
|
||
return;
|
||
|
||
if (d->block)
|
||
within_current_scope = contained_in (get_selected_block (), d->block);
|
||
else
|
||
within_current_scope = 1;
|
||
if (!within_current_scope)
|
||
return;
|
||
|
||
current_display_number = d->number;
|
||
|
||
printf_filtered ("%d: ", d->number);
|
||
if (d->format.size)
|
||
{
|
||
CORE_ADDR addr;
|
||
|
||
printf_filtered ("x/");
|
||
if (d->format.count != 1)
|
||
printf_filtered ("%d", d->format.count);
|
||
printf_filtered ("%c", d->format.format);
|
||
if (d->format.format != 'i' && d->format.format != 's')
|
||
printf_filtered ("%c", d->format.size);
|
||
printf_filtered (" ");
|
||
print_expression (d->exp, stdout);
|
||
if (d->format.count != 1)
|
||
printf_filtered ("\n");
|
||
else
|
||
printf_filtered (" ");
|
||
|
||
addr = value_as_pointer (evaluate_expression (d->exp));
|
||
if (d->format.format == 'i')
|
||
addr = ADDR_BITS_REMOVE (addr);
|
||
|
||
do_examine (d->format, addr);
|
||
}
|
||
else
|
||
{
|
||
if (d->format.format)
|
||
printf_filtered ("/%c ", d->format.format);
|
||
print_expression (d->exp, stdout);
|
||
printf_filtered (" = ");
|
||
print_formatted (evaluate_expression (d->exp),
|
||
d->format.format, d->format.size);
|
||
printf_filtered ("\n");
|
||
}
|
||
|
||
fflush (stdout);
|
||
current_display_number = -1;
|
||
}
|
||
|
||
/* Display all of the values on the auto-display chain which can be
|
||
evaluated in the current scope. */
|
||
|
||
void
|
||
do_displays ()
|
||
{
|
||
register struct display *d;
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
do_one_display (d);
|
||
}
|
||
|
||
/* Delete the auto-display which we were in the process of displaying.
|
||
This is done when there is an error or a signal. */
|
||
|
||
void
|
||
disable_display (num)
|
||
int num;
|
||
{
|
||
register struct display *d;
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
if (d->number == num)
|
||
{
|
||
d->status = disabled;
|
||
return;
|
||
}
|
||
printf ("No display number %d.\n", num);
|
||
}
|
||
|
||
void
|
||
disable_current_display ()
|
||
{
|
||
if (current_display_number >= 0)
|
||
{
|
||
disable_display (current_display_number);
|
||
fprintf (stderr, "Disabling display %d to avoid infinite recursion.\n",
|
||
current_display_number);
|
||
}
|
||
current_display_number = -1;
|
||
}
|
||
|
||
static void
|
||
display_info (ignore, from_tty)
|
||
char *ignore;
|
||
int from_tty;
|
||
{
|
||
register struct display *d;
|
||
|
||
if (!display_chain)
|
||
printf ("There are no auto-display expressions now.\n");
|
||
else
|
||
printf_filtered ("Auto-display expressions now in effect:\n\
|
||
Num Enb Expression\n");
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
{
|
||
printf_filtered ("%d: %c ", d->number, "ny"[(int)d->status]);
|
||
if (d->format.size)
|
||
printf_filtered ("/%d%c%c ", d->format.count, d->format.size,
|
||
d->format.format);
|
||
else if (d->format.format)
|
||
printf_filtered ("/%c ", d->format.format);
|
||
print_expression (d->exp, stdout);
|
||
if (d->block && !contained_in (get_selected_block (), d->block))
|
||
printf_filtered (" (cannot be evaluated in the current context)");
|
||
printf_filtered ("\n");
|
||
fflush (stdout);
|
||
}
|
||
}
|
||
|
||
static void
|
||
enable_display (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
register char *p = args;
|
||
register char *p1;
|
||
register int num;
|
||
register struct display *d;
|
||
|
||
if (p == 0)
|
||
{
|
||
for (d = display_chain; d; d = d->next)
|
||
d->status = enabled;
|
||
}
|
||
else
|
||
while (*p)
|
||
{
|
||
p1 = p;
|
||
while (*p1 >= '0' && *p1 <= '9')
|
||
p1++;
|
||
if (*p1 && *p1 != ' ' && *p1 != '\t')
|
||
error ("Arguments must be display numbers.");
|
||
|
||
num = atoi (p);
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
if (d->number == num)
|
||
{
|
||
d->status = enabled;
|
||
goto win;
|
||
}
|
||
printf ("No display number %d.\n", num);
|
||
win:
|
||
p = p1;
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
}
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
disable_display_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
register char *p = args;
|
||
register char *p1;
|
||
register struct display *d;
|
||
|
||
if (p == 0)
|
||
{
|
||
for (d = display_chain; d; d = d->next)
|
||
d->status = disabled;
|
||
}
|
||
else
|
||
while (*p)
|
||
{
|
||
p1 = p;
|
||
while (*p1 >= '0' && *p1 <= '9')
|
||
p1++;
|
||
if (*p1 && *p1 != ' ' && *p1 != '\t')
|
||
error ("Arguments must be display numbers.");
|
||
|
||
disable_display (atoi (p));
|
||
|
||
p = p1;
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
}
|
||
}
|
||
|
||
|
||
/* Print the value in stack frame FRAME of a variable
|
||
specified by a struct symbol. */
|
||
|
||
void
|
||
print_variable_value (var, frame, stream)
|
||
struct symbol *var;
|
||
FRAME frame;
|
||
FILE *stream;
|
||
{
|
||
value val = read_var_value (var, frame);
|
||
value_print (val, stream, 0, Val_pretty_default);
|
||
}
|
||
|
||
/* Print the arguments of a stack frame, given the function FUNC
|
||
running in that frame (as a symbol), the info on the frame,
|
||
and the number of args according to the stack frame (or -1 if unknown). */
|
||
|
||
/* References here and elsewhere to "number of args according to the
|
||
stack frame" appear in all cases to refer to "number of ints of args
|
||
according to the stack frame". At least for VAX, i386, isi. */
|
||
|
||
void
|
||
print_frame_args (func, fi, num, stream)
|
||
struct symbol *func;
|
||
struct frame_info *fi;
|
||
int num;
|
||
FILE *stream;
|
||
{
|
||
struct block *b;
|
||
int nsyms = 0;
|
||
int first = 1;
|
||
register int i;
|
||
register struct symbol *sym;
|
||
register value val;
|
||
/* Offset of next stack argument beyond the one we have seen that is
|
||
at the highest offset.
|
||
-1 if we haven't come to a stack argument yet. */
|
||
long highest_offset = -1;
|
||
int arg_size;
|
||
/* Number of ints of arguments that we have printed so far. */
|
||
int args_printed = 0;
|
||
|
||
if (func)
|
||
{
|
||
b = SYMBOL_BLOCK_VALUE (func);
|
||
nsyms = BLOCK_NSYMS (b);
|
||
}
|
||
|
||
for (i = 0; i < nsyms; i++)
|
||
{
|
||
QUIT;
|
||
sym = BLOCK_SYM (b, i);
|
||
|
||
/* Keep track of the highest stack argument offset seen, and
|
||
skip over any kinds of symbols we don't care about. */
|
||
|
||
switch (SYMBOL_CLASS (sym)) {
|
||
case LOC_ARG:
|
||
case LOC_REF_ARG:
|
||
{
|
||
long current_offset = SYMBOL_VALUE (sym);
|
||
|
||
arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym));
|
||
|
||
/* Compute address of next argument by adding the size of
|
||
this argument and rounding to an int boundary. */
|
||
current_offset
|
||
= ((current_offset + arg_size + sizeof (int) - 1)
|
||
& ~(sizeof (int) - 1));
|
||
|
||
/* If this is the highest offset seen yet, set highest_offset. */
|
||
if (highest_offset == -1
|
||
|| (current_offset > highest_offset))
|
||
highest_offset = current_offset;
|
||
|
||
/* Add the number of ints we're about to print to args_printed. */
|
||
args_printed += (arg_size + sizeof (int) - 1) / sizeof (int);
|
||
}
|
||
|
||
/* We care about types of symbols, but don't need to keep track of
|
||
stack offsets in them. */
|
||
case LOC_REGPARM:
|
||
case LOC_LOCAL_ARG:
|
||
break;
|
||
|
||
/* Other types of symbols we just skip over. */
|
||
default:
|
||
continue;
|
||
}
|
||
|
||
/* If the symbol name is non-null,
|
||
we have to re-look-up the symbol because arguments often have
|
||
two entries (one a parameter, one a register or local), and the one
|
||
we want is the non-parm, which lookup_symbol will find for
|
||
us. After this, sym could be any SYMBOL_CLASS...
|
||
|
||
Null parameter names occur on the RS/6000, for traceback tables.
|
||
FIXME, should we even print them? */
|
||
|
||
if (*SYMBOL_NAME (sym))
|
||
sym = lookup_symbol (SYMBOL_NAME (sym),
|
||
b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL);
|
||
|
||
/* Print the current arg. */
|
||
if (! first)
|
||
fprintf_filtered (stream, ", ");
|
||
wrap_here (" ");
|
||
fprint_symbol (stream, SYMBOL_SOURCE_NAME (sym));
|
||
fputs_filtered ("=", stream);
|
||
|
||
/* Avoid value_print because it will deref ref parameters. We just
|
||
want to print their addresses. Print ??? for args whose address
|
||
we do not know. We pass 2 as "recurse" to val_print because our
|
||
standard indentation here is 4 spaces, and val_print indents
|
||
2 for each recurse. */
|
||
val = read_var_value (sym, FRAME_INFO_ID (fi));
|
||
if (val)
|
||
val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), VALUE_ADDRESS (val),
|
||
stream, 0, 0, 2, Val_no_prettyprint);
|
||
else
|
||
fputs_filtered ("???", stream);
|
||
first = 0;
|
||
}
|
||
|
||
/* Don't print nameless args in situations where we don't know
|
||
enough about the stack to find them. */
|
||
if (num != -1)
|
||
{
|
||
long start;
|
||
|
||
if (highest_offset == -1)
|
||
start = FRAME_ARGS_SKIP;
|
||
else
|
||
start = highest_offset;
|
||
|
||
print_frame_nameless_args (fi, start, num - args_printed,
|
||
first, stream);
|
||
}
|
||
}
|
||
|
||
/* Print nameless args on STREAM.
|
||
FI is the frameinfo for this frame, START is the offset
|
||
of the first nameless arg, and NUM is the number of nameless args to
|
||
print. FIRST is nonzero if this is the first argument (not just
|
||
the first nameless arg). */
|
||
static void
|
||
print_frame_nameless_args (fi, start, num, first, stream)
|
||
struct frame_info *fi;
|
||
long start;
|
||
int num;
|
||
int first;
|
||
FILE *stream;
|
||
{
|
||
int i;
|
||
CORE_ADDR argsaddr;
|
||
long arg_value;
|
||
|
||
for (i = 0; i < num; i++)
|
||
{
|
||
QUIT;
|
||
#ifdef NAMELESS_ARG_VALUE
|
||
NAMELESS_ARG_VALUE (fi, start, &arg_value);
|
||
#else
|
||
argsaddr = FRAME_ARGS_ADDRESS (fi);
|
||
if (!argsaddr)
|
||
return;
|
||
|
||
arg_value = read_memory_integer (argsaddr + start, sizeof (int));
|
||
#endif
|
||
|
||
if (!first)
|
||
fprintf_filtered (stream, ", ");
|
||
|
||
#ifdef PRINT_NAMELESS_INTEGER
|
||
PRINT_NAMELESS_INTEGER (stream, arg_value);
|
||
#else
|
||
#ifdef PRINT_TYPELESS_INTEGER
|
||
PRINT_TYPELESS_INTEGER (stream, builtin_type_int, (LONGEST) arg_value);
|
||
#else
|
||
fprintf_filtered (stream, "%d", arg_value);
|
||
#endif /* PRINT_TYPELESS_INTEGER */
|
||
#endif /* PRINT_NAMELESS_INTEGER */
|
||
first = 0;
|
||
start += sizeof (int);
|
||
}
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
printf_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
register char *f;
|
||
register char *s = arg;
|
||
char *string;
|
||
value *val_args;
|
||
int nargs = 0;
|
||
int allocated_args = 20;
|
||
char *arg_bytes;
|
||
|
||
val_args = (value *) xmalloc (allocated_args * sizeof (value));
|
||
|
||
if (s == 0)
|
||
error_no_arg ("format-control string and values to print");
|
||
|
||
/* Skip white space before format string */
|
||
while (*s == ' ' || *s == '\t') s++;
|
||
|
||
/* A format string should follow, enveloped in double quotes */
|
||
if (*s++ != '"')
|
||
error ("Bad format string, missing '\"'.");
|
||
|
||
/* Parse the format-control string and copy it into the string STRING,
|
||
processing some kinds of escape sequence. */
|
||
|
||
f = string = (char *) alloca (strlen (s) + 1);
|
||
while (*s != '"')
|
||
{
|
||
int c = *s++;
|
||
switch (c)
|
||
{
|
||
case '\0':
|
||
error ("Bad format string, non-terminated '\"'.");
|
||
/* doesn't return */
|
||
|
||
case '\\':
|
||
switch (c = *s++)
|
||
{
|
||
case '\\':
|
||
*f++ = '\\';
|
||
break;
|
||
case 'n':
|
||
*f++ = '\n';
|
||
break;
|
||
case 't':
|
||
*f++ = '\t';
|
||
break;
|
||
case 'r':
|
||
*f++ = '\r';
|
||
break;
|
||
case '"':
|
||
*f++ = '"';
|
||
break;
|
||
default:
|
||
/* ??? TODO: handle other escape sequences */
|
||
error ("Unrecognized \\ escape character in format string.");
|
||
}
|
||
break;
|
||
|
||
default:
|
||
*f++ = c;
|
||
}
|
||
}
|
||
|
||
/* Skip over " and following space and comma. */
|
||
s++;
|
||
*f++ = '\0';
|
||
while (*s == ' ' || *s == '\t') s++;
|
||
|
||
if (*s != ',' && *s != 0)
|
||
error ("Invalid argument syntax");
|
||
|
||
if (*s == ',') s++;
|
||
while (*s == ' ' || *s == '\t') s++;
|
||
|
||
{
|
||
/* Now scan the string for %-specs and see what kinds of args they want.
|
||
argclass[I] classifies the %-specs so we can give vprintf something
|
||
of the right size. */
|
||
|
||
enum argclass {int_arg, string_arg, double_arg, long_long_arg};
|
||
enum argclass *argclass;
|
||
int nargs_wanted;
|
||
int argindex;
|
||
int lcount;
|
||
int i;
|
||
|
||
argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
|
||
nargs_wanted = 0;
|
||
f = string;
|
||
while (*f)
|
||
if (*f++ == '%')
|
||
{
|
||
lcount = 0;
|
||
while (strchr ("0123456789.hlL-+ #", *f))
|
||
{
|
||
if (*f == 'l' || *f == 'L')
|
||
lcount++;
|
||
f++;
|
||
}
|
||
if (*f == 's')
|
||
argclass[nargs_wanted++] = string_arg;
|
||
else if (*f == 'e' || *f == 'f' || *f == 'g')
|
||
argclass[nargs_wanted++] = double_arg;
|
||
else if (lcount > 1)
|
||
argclass[nargs_wanted++] = long_long_arg;
|
||
else if (*f != '%')
|
||
argclass[nargs_wanted++] = int_arg;
|
||
f++;
|
||
}
|
||
|
||
/* Now, parse all arguments and evaluate them.
|
||
Store the VALUEs in VAL_ARGS. */
|
||
|
||
while (*s != '\0')
|
||
{
|
||
char *s1;
|
||
if (nargs == allocated_args)
|
||
val_args = (value *) xrealloc ((char *) val_args,
|
||
(allocated_args *= 2)
|
||
* sizeof (value));
|
||
s1 = s;
|
||
val_args[nargs] = parse_to_comma_and_eval (&s1);
|
||
|
||
/* If format string wants a float, unchecked-convert the value to
|
||
floating point of the same size */
|
||
|
||
if (argclass[nargs] == double_arg)
|
||
{
|
||
if (TYPE_LENGTH (VALUE_TYPE (val_args[nargs])) == sizeof (float))
|
||
VALUE_TYPE (val_args[nargs]) = builtin_type_float;
|
||
if (TYPE_LENGTH (VALUE_TYPE (val_args[nargs])) == sizeof (double))
|
||
VALUE_TYPE (val_args[nargs]) = builtin_type_double;
|
||
}
|
||
nargs++;
|
||
s = s1;
|
||
if (*s == ',')
|
||
s++;
|
||
}
|
||
|
||
if (nargs != nargs_wanted)
|
||
error ("Wrong number of arguments for specified format-string");
|
||
|
||
/* Now lay out an argument-list containing the arguments
|
||
as doubles, integers and C pointers. */
|
||
|
||
arg_bytes = (char *) alloca (sizeof (double) * nargs);
|
||
argindex = 0;
|
||
for (i = 0; i < nargs; i++)
|
||
{
|
||
if (argclass[i] == string_arg)
|
||
{
|
||
char *str;
|
||
CORE_ADDR tem;
|
||
int j;
|
||
tem = value_as_pointer (val_args[i]);
|
||
|
||
/* This is a %s argument. Find the length of the string. */
|
||
for (j = 0; ; j++)
|
||
{
|
||
char c;
|
||
QUIT;
|
||
read_memory (tem + j, &c, 1);
|
||
if (c == 0)
|
||
break;
|
||
}
|
||
|
||
/* Copy the string contents into a string inside GDB. */
|
||
str = (char *) alloca (j + 1);
|
||
read_memory (tem, str, j);
|
||
str[j] = 0;
|
||
|
||
/* Pass address of internal copy as the arg to vprintf. */
|
||
*((int *) &arg_bytes[argindex]) = (int) str;
|
||
argindex += sizeof (int);
|
||
}
|
||
else if (VALUE_TYPE (val_args[i])->code == TYPE_CODE_FLT)
|
||
{
|
||
*((double *) &arg_bytes[argindex]) = value_as_double (val_args[i]);
|
||
argindex += sizeof (double);
|
||
}
|
||
else
|
||
#ifdef LONG_LONG
|
||
if (argclass[i] == long_long_arg)
|
||
{
|
||
*(long long *) &arg_bytes[argindex] = value_as_long (val_args[i]);
|
||
argindex += sizeof (long long);
|
||
}
|
||
else
|
||
#endif
|
||
{
|
||
*((long *) &arg_bytes[argindex]) = value_as_long (val_args[i]);
|
||
argindex += sizeof (long);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* There is not a standard way to make a va_list, so we need
|
||
to do various things for different systems. */
|
||
#if defined (__INT_VARARGS_H)
|
||
{
|
||
va_list list;
|
||
|
||
list.__va_arg = 0;
|
||
list.__va_stk = (int *) arg_bytes;
|
||
list.__va_reg = (int *) arg_bytes;
|
||
vprintf (string, list);
|
||
}
|
||
#else /* No __INT_VARARGS_H. */
|
||
vprintf (string, arg_bytes);
|
||
#endif /* No __INT_VARARGS_H. */
|
||
}
|
||
|
||
/* Helper function for asdump_command. Finds the bounds of a function
|
||
for a specified section of text. PC is an address within the
|
||
function which you want bounds for; *LOW and *HIGH are set to the
|
||
beginning (inclusive) and end (exclusive) of the function. This
|
||
function returns 1 on success and 0 on failure. */
|
||
|
||
static int
|
||
containing_function_bounds (pc, low, high)
|
||
CORE_ADDR pc, *low, *high;
|
||
{
|
||
int scan;
|
||
|
||
if (!find_pc_partial_function (pc, 0, low))
|
||
return 0;
|
||
|
||
scan = *low;
|
||
do {
|
||
scan++;
|
||
if (!find_pc_partial_function (scan, 0, high))
|
||
return 0;
|
||
} while (*low == *high);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Dump a specified section of assembly code. With no command line
|
||
arguments, this command will dump the assembly code for the
|
||
function surrounding the pc value in the selected frame. With one
|
||
argument, it will dump the assembly code surrounding that pc value.
|
||
Two arguments are interpeted as bounds within which to dump
|
||
assembly. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
disassemble_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
CORE_ADDR low, high;
|
||
CORE_ADDR pc;
|
||
char *space_index;
|
||
|
||
if (!arg)
|
||
{
|
||
if (!selected_frame)
|
||
error ("No frame selected.\n");
|
||
|
||
pc = get_frame_pc (selected_frame);
|
||
if (!containing_function_bounds (pc, &low, &high))
|
||
error ("No function contains pc specified by selected frame.\n");
|
||
}
|
||
else if (!(space_index = (char *) strchr (arg, ' ')))
|
||
{
|
||
/* One argument. */
|
||
pc = parse_and_eval_address (arg);
|
||
if (!containing_function_bounds (pc, &low, &high))
|
||
error ("No function contains specified pc.\n");
|
||
}
|
||
else
|
||
{
|
||
/* Two arguments. */
|
||
*space_index = '\0';
|
||
low = parse_and_eval_address (arg);
|
||
high = parse_and_eval_address (space_index + 1);
|
||
}
|
||
|
||
printf_filtered ("Dump of assembler code ");
|
||
if (!space_index)
|
||
{
|
||
char *name;
|
||
find_pc_partial_function (pc, &name, 0);
|
||
printf_filtered ("for function %s:\n", name);
|
||
}
|
||
else
|
||
printf_filtered ("from %s ", local_hex_string(low));
|
||
printf_filtered ("to %s:\n", local_hex_string(high));
|
||
|
||
/* Dump the specified range. */
|
||
for (pc = low; pc < high; )
|
||
{
|
||
QUIT;
|
||
print_address (pc, stdout);
|
||
printf_filtered (":\t");
|
||
pc += print_insn (pc, stdout);
|
||
printf_filtered ("\n");
|
||
}
|
||
printf_filtered ("End of assembler dump.\n");
|
||
fflush (stdout);
|
||
}
|
||
|
||
|
||
void
|
||
_initialize_printcmd ()
|
||
{
|
||
current_display_number = -1;
|
||
|
||
add_info ("address", address_info,
|
||
"Describe where variable VAR is stored.");
|
||
|
||
add_com ("x", class_vars, x_command,
|
||
"Examine memory: x/FMT ADDRESS.\n\
|
||
ADDRESS is an expression for the memory address to examine.\n\
|
||
FMT is a repeat count followed by a format letter and a size letter.\n\
|
||
Format letters are o(octal), x(hex), d(decimal), u(unsigned decimal),\n\
|
||
f(float), a(address), i(instruction), c(char) and s(string).\n\
|
||
Size letters are b(byte), h(halfword), w(word), g(giant, 8 bytes).\n\
|
||
g is meaningful only with f, for type double.\n\
|
||
The specified number of objects of the specified size are printed\n\
|
||
according to the format.\n\n\
|
||
Defaults for format and size letters are those previously used.\n\
|
||
Default count is 1. Default address is following last thing printed\n\
|
||
with this command or \"print\".");
|
||
|
||
add_com ("disassemble", class_vars, disassemble_command,
|
||
"Disassemble a specified section of memory.\n\
|
||
Default is the function surrounding the pc of the selected frame.\n\
|
||
With a single argument, the function surrounding that address is dumped.\n\
|
||
Two arguments are taken as a range of memory to dump.");
|
||
|
||
#if 0
|
||
add_com ("whereis", class_vars, whereis_command,
|
||
"Print line number and file of definition of variable.");
|
||
#endif
|
||
|
||
add_info ("display", display_info,
|
||
"Expressions to display when program stops, with code numbers.");
|
||
|
||
add_cmd ("undisplay", class_vars, undisplay_command,
|
||
"Cancel some expressions to be displayed when program stops.\n\
|
||
Arguments are the code numbers of the expressions to stop displaying.\n\
|
||
No argument means cancel all automatic-display expressions.\n\
|
||
\"delete display\" has the same effect as this command.\n\
|
||
Do \"info display\" to see current list of code numbers.",
|
||
&cmdlist);
|
||
|
||
add_com ("display", class_vars, display_command,
|
||
"Print value of expression EXP each time the program stops.\n\
|
||
/FMT may be used before EXP as in the \"print\" command.\n\
|
||
/FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
|
||
as in the \"x\" command, and then EXP is used to get the address to examine\n\
|
||
and examining is done as in the \"x\" command.\n\n\
|
||
With no argument, display all currently requested auto-display expressions.\n\
|
||
Use \"undisplay\" to cancel display requests previously made.");
|
||
|
||
add_cmd ("display", class_vars, enable_display,
|
||
"Enable some expressions to be displayed when program stops.\n\
|
||
Arguments are the code numbers of the expressions to resume displaying.\n\
|
||
No argument means enable all automatic-display expressions.\n\
|
||
Do \"info display\" to see current list of code numbers.", &enablelist);
|
||
|
||
add_cmd ("display", class_vars, disable_display_command,
|
||
"Disable some expressions to be displayed when program stops.\n\
|
||
Arguments are the code numbers of the expressions to stop displaying.\n\
|
||
No argument means disable all automatic-display expressions.\n\
|
||
Do \"info display\" to see current list of code numbers.", &disablelist);
|
||
|
||
add_cmd ("display", class_vars, undisplay_command,
|
||
"Cancel some expressions to be displayed when program stops.\n\
|
||
Arguments are the code numbers of the expressions to stop displaying.\n\
|
||
No argument means cancel all automatic-display expressions.\n\
|
||
Do \"info display\" to see current list of code numbers.", &deletelist);
|
||
|
||
add_com ("printf", class_vars, printf_command,
|
||
"printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
|
||
This is useful for formatted output in user-defined commands.");
|
||
add_com ("output", class_vars, output_command,
|
||
"Like \"print\" but don't put in value history and don't print newline.\n\
|
||
This is useful in user-defined commands.");
|
||
|
||
add_prefix_cmd ("set", class_vars, set_command,
|
||
"Evaluate expression EXP and assign result to variable VAR, using assignment\n\
|
||
syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
|
||
example). VAR may be a debugger \"convenience\" variable (names starting\n\
|
||
with $), a register (a few standard names starting with $), or an actual\n\
|
||
variable in the program being debugged. EXP is any valid expression.\n\
|
||
Use \"set variable\" for variables with names identical to set subcommands.\n\
|
||
\nWith a subcommand, this command modifies parts of the gdb environment.\n\
|
||
You can see these environment settings with the \"show\" command.",
|
||
&setlist, "set ", 1, &cmdlist);
|
||
|
||
/* "call" is the same as "set", but handy for dbx users to call fns. */
|
||
add_com ("call", class_vars, call_command,
|
||
"Call a function in the inferior process.\n\
|
||
The argument is the function name and arguments, in the notation of the\n\
|
||
current working language. The result is printed and saved in the value\n\
|
||
history, if it is not void.");
|
||
|
||
add_cmd ("variable", class_vars, set_command,
|
||
"Evaluate expression EXP and assign result to variable VAR, using assignment\n\
|
||
syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
|
||
example). VAR may be a debugger \"convenience\" variable (names starting\n\
|
||
with $), a register (a few standard names starting with $), or an actual\n\
|
||
variable in the program being debugged. EXP is any valid expression.\n\
|
||
This may usually be abbreviated to simply \"set\".",
|
||
&setlist);
|
||
|
||
add_com ("print", class_vars, print_command,
|
||
concat ("Print value of expression EXP.\n\
|
||
Variables accessible are those of the lexical environment of the selected\n\
|
||
stack frame, plus all those whose scope is global or an entire file.\n\
|
||
\n\
|
||
$NUM gets previous value number NUM. $ and $$ are the last two values.\n\
|
||
$$NUM refers to NUM'th value back from the last one.\n\
|
||
Names starting with $ refer to registers (with the values they would have\n\
|
||
if the program were to return to the stack frame now selected, restoring\n\
|
||
all registers saved by frames farther in) or else to debugger\n\
|
||
\"convenience\" variables (any such name not a known register).\n\
|
||
Use assignment expressions to give values to convenience variables.\n",
|
||
"\n\
|
||
{TYPE}ADREXP refers to a datum of data type TYPE, located at address ADREXP.\n\
|
||
@ is a binary operator for treating consecutive data objects\n\
|
||
anywhere in memory as an array. FOO@NUM gives an array whose first\n\
|
||
element is FOO, whose second element is stored in the space following\n\
|
||
where FOO is stored, etc. FOO must be an expression whose value\n\
|
||
resides in memory.\n",
|
||
"\n\
|
||
EXP may be preceded with /FMT, where FMT is a format letter\n\
|
||
but no count or size letter (see \"x\" command).", NULL));
|
||
add_com_alias ("p", "print", class_vars, 1);
|
||
|
||
add_com ("inspect", class_vars, inspect_command,
|
||
"Same as \"print\" command, except that if you are running in the epoch\n\
|
||
environment, the value is printed in its own window.");
|
||
}
|