5fd1a349f0
* solib.c (solib_contains_address_p): New function. (solib_name_from_address): Use it. * printcmd.c (display_uses_solib_p): Use it. * solib.h (solib_contains_address_p): Declare it.
2627 lines
70 KiB
C
2627 lines
70 KiB
C
/* Print values for GNU debugger GDB.
|
||
|
||
Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
|
||
1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
|
||
2008, 2009 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#include "defs.h"
|
||
#include "gdb_string.h"
|
||
#include "frame.h"
|
||
#include "symtab.h"
|
||
#include "gdbtypes.h"
|
||
#include "value.h"
|
||
#include "language.h"
|
||
#include "expression.h"
|
||
#include "gdbcore.h"
|
||
#include "gdbcmd.h"
|
||
#include "target.h"
|
||
#include "breakpoint.h"
|
||
#include "demangle.h"
|
||
#include "valprint.h"
|
||
#include "annotate.h"
|
||
#include "symfile.h" /* for overlay functions */
|
||
#include "objfiles.h" /* ditto */
|
||
#include "completer.h" /* for completion functions */
|
||
#include "ui-out.h"
|
||
#include "gdb_assert.h"
|
||
#include "block.h"
|
||
#include "disasm.h"
|
||
#include "dfp.h"
|
||
#include "valprint.h"
|
||
#include "exceptions.h"
|
||
#include "observer.h"
|
||
#include "solist.h"
|
||
#include "solib.h"
|
||
#include "parser-defs.h"
|
||
|
||
#ifdef TUI
|
||
#include "tui/tui.h" /* For tui_active et.al. */
|
||
#endif
|
||
|
||
#if defined(__MINGW32__) && !defined(PRINTF_HAS_LONG_LONG)
|
||
# define USE_PRINTF_I64 1
|
||
# define PRINTF_HAS_LONG_LONG
|
||
#else
|
||
# define USE_PRINTF_I64 0
|
||
#endif
|
||
|
||
extern int asm_demangle; /* Whether to demangle syms in asm printouts */
|
||
|
||
struct format_data
|
||
{
|
||
int count;
|
||
char format;
|
||
char size;
|
||
};
|
||
|
||
/* Last specified output format. */
|
||
|
||
static char last_format = 'x';
|
||
|
||
/* Last specified examination size. 'b', 'h', 'w' or `q'. */
|
||
|
||
static char last_size = 'w';
|
||
|
||
/* Default address to examine next. */
|
||
|
||
static CORE_ADDR next_address;
|
||
|
||
/* Number of delay instructions following current disassembled insn. */
|
||
|
||
static int branch_delay_insns;
|
||
|
||
/* Last address examined. */
|
||
|
||
static CORE_ADDR last_examine_address;
|
||
|
||
/* Contents of last address examined.
|
||
This is not valid past the end of the `x' command! */
|
||
|
||
static struct value *last_examine_value;
|
||
|
||
/* Largest offset between a symbolic value and an address, that will be
|
||
printed as `0x1234 <symbol+offset>'. */
|
||
|
||
static unsigned int max_symbolic_offset = UINT_MAX;
|
||
static void
|
||
show_max_symbolic_offset (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("\
|
||
The largest offset that will be printed in <symbol+1234> form is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* Append the source filename and linenumber of the symbol when
|
||
printing a symbolic value as `<symbol at filename:linenum>' if set. */
|
||
static int print_symbol_filename = 0;
|
||
static void
|
||
show_print_symbol_filename (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("\
|
||
Printing of source filename and line number with <symbol> is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* Number of auto-display expression currently being displayed.
|
||
So that we can disable it if we get an error or a signal within it.
|
||
-1 when not doing one. */
|
||
|
||
int current_display_number;
|
||
|
||
struct display
|
||
{
|
||
/* Chain link to next auto-display item. */
|
||
struct display *next;
|
||
/* The expression as the user typed it. */
|
||
char *exp_string;
|
||
/* Expression to be evaluated and displayed. */
|
||
struct expression *exp;
|
||
/* Item number of this auto-display item. */
|
||
int number;
|
||
/* Display format specified. */
|
||
struct format_data format;
|
||
/* Innermost block required by this expression when evaluated */
|
||
struct block *block;
|
||
/* Status of this display (enabled or disabled) */
|
||
int enabled_p;
|
||
};
|
||
|
||
/* Chain of expressions whose values should be displayed
|
||
automatically each time the program stops. */
|
||
|
||
static struct display *display_chain;
|
||
|
||
static int display_number;
|
||
|
||
/* Prototypes for exported functions. */
|
||
|
||
void output_command (char *, int);
|
||
|
||
void _initialize_printcmd (void);
|
||
|
||
/* Prototypes for local functions. */
|
||
|
||
static void do_one_display (struct display *);
|
||
|
||
|
||
/* Decode a format specification. *STRING_PTR should point to it.
|
||
OFORMAT and OSIZE are used as defaults for the format and size
|
||
if none are given in the format specification.
|
||
If OSIZE is zero, then the size field of the returned value
|
||
should be set only if a size is explicitly specified by the
|
||
user.
|
||
The structure returned describes all the data
|
||
found in the specification. In addition, *STRING_PTR is advanced
|
||
past the specification and past all whitespace following it. */
|
||
|
||
static struct format_data
|
||
decode_format (char **string_ptr, int oformat, int osize)
|
||
{
|
||
struct format_data val;
|
||
char *p = *string_ptr;
|
||
|
||
val.format = '?';
|
||
val.size = '?';
|
||
val.count = 1;
|
||
|
||
if (*p >= '0' && *p <= '9')
|
||
val.count = atoi (p);
|
||
while (*p >= '0' && *p <= '9')
|
||
p++;
|
||
|
||
/* Now process size or format letters that follow. */
|
||
|
||
while (1)
|
||
{
|
||
if (*p == 'b' || *p == 'h' || *p == 'w' || *p == 'g')
|
||
val.size = *p++;
|
||
else if (*p >= 'a' && *p <= 'z')
|
||
val.format = *p++;
|
||
else
|
||
break;
|
||
}
|
||
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
*string_ptr = p;
|
||
|
||
/* Set defaults for format and size if not specified. */
|
||
if (val.format == '?')
|
||
{
|
||
if (val.size == '?')
|
||
{
|
||
/* Neither has been specified. */
|
||
val.format = oformat;
|
||
val.size = osize;
|
||
}
|
||
else
|
||
/* If a size is specified, any format makes a reasonable
|
||
default except 'i'. */
|
||
val.format = oformat == 'i' ? 'x' : oformat;
|
||
}
|
||
else if (val.size == '?')
|
||
switch (val.format)
|
||
{
|
||
case 'a':
|
||
case 's':
|
||
/* Pick the appropriate size for an address. */
|
||
if (gdbarch_ptr_bit (current_gdbarch) == 64)
|
||
val.size = osize ? 'g' : osize;
|
||
else if (gdbarch_ptr_bit (current_gdbarch) == 32)
|
||
val.size = osize ? 'w' : osize;
|
||
else if (gdbarch_ptr_bit (current_gdbarch) == 16)
|
||
val.size = osize ? 'h' : osize;
|
||
else
|
||
/* Bad value for gdbarch_ptr_bit. */
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
break;
|
||
case 'f':
|
||
/* Floating point has to be word or giantword. */
|
||
if (osize == 'w' || osize == 'g')
|
||
val.size = osize;
|
||
else
|
||
/* Default it to giantword if the last used size is not
|
||
appropriate. */
|
||
val.size = osize ? 'g' : osize;
|
||
break;
|
||
case 'c':
|
||
/* Characters default to one byte. */
|
||
val.size = osize ? 'b' : osize;
|
||
break;
|
||
default:
|
||
/* The default is the size most recently specified. */
|
||
val.size = osize;
|
||
}
|
||
|
||
return val;
|
||
}
|
||
|
||
/* Print value VAL on stream according to OPTIONS.
|
||
Do not end with a newline.
|
||
SIZE is the letter for the size of datum being printed.
|
||
This is used to pad hex numbers so they line up. SIZE is 0
|
||
for print / output and set for examine. */
|
||
|
||
static void
|
||
print_formatted (struct value *val, int size,
|
||
const struct value_print_options *options,
|
||
struct ui_file *stream)
|
||
{
|
||
struct type *type = check_typedef (value_type (val));
|
||
int len = TYPE_LENGTH (type);
|
||
|
||
if (VALUE_LVAL (val) == lval_memory)
|
||
next_address = VALUE_ADDRESS (val) + len;
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||
|
||
if (size)
|
||
{
|
||
switch (options->format)
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||
{
|
||
case 's':
|
||
/* FIXME: Need to handle wchar_t's here... */
|
||
next_address = VALUE_ADDRESS (val)
|
||
+ val_print_string (VALUE_ADDRESS (val), -1, 1, stream,
|
||
options);
|
||
return;
|
||
|
||
case 'i':
|
||
/* We often wrap here if there are long symbolic names. */
|
||
wrap_here (" ");
|
||
next_address = (VALUE_ADDRESS (val)
|
||
+ gdb_print_insn (VALUE_ADDRESS (val), stream,
|
||
&branch_delay_insns));
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (options->format == 0 || options->format == 's'
|
||
|| TYPE_CODE (type) == TYPE_CODE_REF
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||
|| TYPE_CODE (type) == TYPE_CODE_ARRAY
|
||
|| TYPE_CODE (type) == TYPE_CODE_STRING
|
||
|| TYPE_CODE (type) == TYPE_CODE_STRUCT
|
||
|| TYPE_CODE (type) == TYPE_CODE_UNION
|
||
|| TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
|
||
value_print (val, stream, options);
|
||
else
|
||
/* User specified format, so don't look to the the type to
|
||
tell us what to do. */
|
||
print_scalar_formatted (value_contents (val), type,
|
||
options, size, stream);
|
||
}
|
||
|
||
/* Return builtin floating point type of same length as TYPE.
|
||
If no such type is found, return TYPE itself. */
|
||
static struct type *
|
||
float_type_from_length (struct gdbarch *gdbarch, struct type *type)
|
||
{
|
||
const struct builtin_type *builtin = builtin_type (gdbarch);
|
||
unsigned int len = TYPE_LENGTH (type);
|
||
|
||
if (len == TYPE_LENGTH (builtin->builtin_float))
|
||
type = builtin->builtin_float;
|
||
else if (len == TYPE_LENGTH (builtin->builtin_double))
|
||
type = builtin->builtin_double;
|
||
else if (len == TYPE_LENGTH (builtin->builtin_long_double))
|
||
type = builtin->builtin_long_double;
|
||
|
||
return type;
|
||
}
|
||
|
||
/* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
|
||
according to OPTIONS and SIZE on STREAM.
|
||
Formats s and i are not supported at this level.
|
||
|
||
This is how the elements of an array or structure are printed
|
||
with a format. */
|
||
|
||
void
|
||
print_scalar_formatted (const void *valaddr, struct type *type,
|
||
const struct value_print_options *options,
|
||
int size, struct ui_file *stream)
|
||
{
|
||
LONGEST val_long = 0;
|
||
unsigned int len = TYPE_LENGTH (type);
|
||
enum bfd_endian byte_order = gdbarch_byte_order (current_gdbarch);
|
||
|
||
/* If we get here with a string format, try again without it. Go
|
||
all the way back to the language printers, which may call us
|
||
again. */
|
||
if (options->format == 's')
|
||
{
|
||
struct value_print_options opts = *options;
|
||
opts.format = 0;
|
||
opts.deref_ref = 0;
|
||
val_print (type, valaddr, 0, 0, stream, 0, &opts,
|
||
current_language);
|
||
return;
|
||
}
|
||
|
||
if (len > sizeof(LONGEST) &&
|
||
(TYPE_CODE (type) == TYPE_CODE_INT
|
||
|| TYPE_CODE (type) == TYPE_CODE_ENUM))
|
||
{
|
||
switch (options->format)
|
||
{
|
||
case 'o':
|
||
print_octal_chars (stream, valaddr, len, byte_order);
|
||
return;
|
||
case 'u':
|
||
case 'd':
|
||
print_decimal_chars (stream, valaddr, len, byte_order);
|
||
return;
|
||
case 't':
|
||
print_binary_chars (stream, valaddr, len, byte_order);
|
||
return;
|
||
case 'x':
|
||
print_hex_chars (stream, valaddr, len, byte_order);
|
||
return;
|
||
case 'c':
|
||
print_char_chars (stream, valaddr, len, byte_order);
|
||
return;
|
||
default:
|
||
break;
|
||
};
|
||
}
|
||
|
||
if (options->format != 'f')
|
||
val_long = unpack_long (type, valaddr);
|
||
|
||
/* If the value is a pointer, and pointers and addresses are not the
|
||
same, then at this point, the value's length (in target bytes) is
|
||
gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
|
||
if (TYPE_CODE (type) == TYPE_CODE_PTR)
|
||
len = gdbarch_addr_bit (current_gdbarch) / TARGET_CHAR_BIT;
|
||
|
||
/* If we are printing it as unsigned, truncate it in case it is actually
|
||
a negative signed value (e.g. "print/u (short)-1" should print 65535
|
||
(if shorts are 16 bits) instead of 4294967295). */
|
||
if (options->format != 'd')
|
||
{
|
||
if (len < sizeof (LONGEST))
|
||
val_long &= ((LONGEST) 1 << HOST_CHAR_BIT * len) - 1;
|
||
}
|
||
|
||
switch (options->format)
|
||
{
|
||
case 'x':
|
||
if (!size)
|
||
{
|
||
/* No size specified, like in print. Print varying # of digits. */
|
||
print_longest (stream, 'x', 1, val_long);
|
||
}
|
||
else
|
||
switch (size)
|
||
{
|
||
case 'b':
|
||
case 'h':
|
||
case 'w':
|
||
case 'g':
|
||
print_longest (stream, size, 1, val_long);
|
||
break;
|
||
default:
|
||
error (_("Undefined output size \"%c\"."), size);
|
||
}
|
||
break;
|
||
|
||
case 'd':
|
||
print_longest (stream, 'd', 1, val_long);
|
||
break;
|
||
|
||
case 'u':
|
||
print_longest (stream, 'u', 0, val_long);
|
||
break;
|
||
|
||
case 'o':
|
||
if (val_long)
|
||
print_longest (stream, 'o', 1, val_long);
|
||
else
|
||
fprintf_filtered (stream, "0");
|
||
break;
|
||
|
||
case 'a':
|
||
{
|
||
CORE_ADDR addr = unpack_pointer (type, valaddr);
|
||
print_address (addr, stream);
|
||
}
|
||
break;
|
||
|
||
case 'c':
|
||
{
|
||
struct value_print_options opts = *options;
|
||
opts.format = 0;
|
||
if (TYPE_UNSIGNED (type))
|
||
value_print (value_from_longest (builtin_type_true_unsigned_char,
|
||
val_long),
|
||
stream, &opts);
|
||
else
|
||
value_print (value_from_longest (builtin_type_true_char, val_long),
|
||
stream, &opts);
|
||
}
|
||
break;
|
||
|
||
case 'f':
|
||
type = float_type_from_length (current_gdbarch, type);
|
||
print_floating (valaddr, type, stream);
|
||
break;
|
||
|
||
case 0:
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
|
||
case 't':
|
||
/* Binary; 't' stands for "two". */
|
||
{
|
||
char bits[8 * (sizeof val_long) + 1];
|
||
char buf[8 * (sizeof val_long) + 32];
|
||
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--;
|
||
}
|
||
strcpy (buf, cp);
|
||
fputs_filtered (buf, stream);
|
||
}
|
||
break;
|
||
|
||
default:
|
||
error (_("Undefined output format \"%c\"."), options->format);
|
||
}
|
||
}
|
||
|
||
/* Specify default address for `x' command.
|
||
The `info lines' command uses this. */
|
||
|
||
void
|
||
set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr)
|
||
{
|
||
struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
|
||
|
||
next_address = addr;
|
||
|
||
/* Make address available to the user as $_. */
|
||
set_internalvar (lookup_internalvar ("_"),
|
||
value_from_pointer (ptr_type, addr));
|
||
}
|
||
|
||
/* Optionally print address ADDR symbolically as <SYMBOL+OFFSET> on STREAM,
|
||
after LEADIN. Print nothing if no symbolic name is found nearby.
|
||
Optionally also print source file and line number, if available.
|
||
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 (CORE_ADDR addr, struct ui_file *stream,
|
||
int do_demangle, char *leadin)
|
||
{
|
||
char *name = NULL;
|
||
char *filename = NULL;
|
||
int unmapped = 0;
|
||
int offset = 0;
|
||
int line = 0;
|
||
|
||
/* Throw away both name and filename. */
|
||
struct cleanup *cleanup_chain = make_cleanup (free_current_contents, &name);
|
||
make_cleanup (free_current_contents, &filename);
|
||
|
||
if (build_address_symbolic (addr, do_demangle, &name, &offset,
|
||
&filename, &line, &unmapped))
|
||
{
|
||
do_cleanups (cleanup_chain);
|
||
return;
|
||
}
|
||
|
||
fputs_filtered (leadin, stream);
|
||
if (unmapped)
|
||
fputs_filtered ("<*", stream);
|
||
else
|
||
fputs_filtered ("<", stream);
|
||
fputs_filtered (name, stream);
|
||
if (offset != 0)
|
||
fprintf_filtered (stream, "+%u", (unsigned int) offset);
|
||
|
||
/* Append source filename and line number if desired. Give specific
|
||
line # of this addr, if we have it; else line # of the nearest symbol. */
|
||
if (print_symbol_filename && filename != NULL)
|
||
{
|
||
if (line != -1)
|
||
fprintf_filtered (stream, " at %s:%d", filename, line);
|
||
else
|
||
fprintf_filtered (stream, " in %s", filename);
|
||
}
|
||
if (unmapped)
|
||
fputs_filtered ("*>", stream);
|
||
else
|
||
fputs_filtered (">", stream);
|
||
|
||
do_cleanups (cleanup_chain);
|
||
}
|
||
|
||
/* Given an address ADDR return all the elements needed to print the
|
||
address in a symbolic form. NAME can be mangled or not depending
|
||
on DO_DEMANGLE (and also on the asm_demangle global variable,
|
||
manipulated via ''set print asm-demangle''). Return 0 in case of
|
||
success, when all the info in the OUT paramters is valid. Return 1
|
||
otherwise. */
|
||
int
|
||
build_address_symbolic (CORE_ADDR addr, /* IN */
|
||
int do_demangle, /* IN */
|
||
char **name, /* OUT */
|
||
int *offset, /* OUT */
|
||
char **filename, /* OUT */
|
||
int *line, /* OUT */
|
||
int *unmapped) /* OUT */
|
||
{
|
||
struct minimal_symbol *msymbol;
|
||
struct symbol *symbol;
|
||
CORE_ADDR name_location = 0;
|
||
struct obj_section *section = NULL;
|
||
char *name_temp = "";
|
||
|
||
/* Let's say it is mapped (not unmapped). */
|
||
*unmapped = 0;
|
||
|
||
/* Determine if the address is in an overlay, and whether it is
|
||
mapped. */
|
||
if (overlay_debugging)
|
||
{
|
||
section = find_pc_overlay (addr);
|
||
if (pc_in_unmapped_range (addr, section))
|
||
{
|
||
*unmapped = 1;
|
||
addr = overlay_mapped_address (addr, section);
|
||
}
|
||
}
|
||
|
||
/* First try to find the address in the symbol table, then
|
||
in the minsyms. Take the closest one. */
|
||
|
||
/* This is defective in the sense that it only finds text symbols. So
|
||
really this is kind of pointless--we should make sure that the
|
||
minimal symbols have everything we need (by changing that we could
|
||
save some memory, but for many debug format--ELF/DWARF or
|
||
anything/stabs--it would be inconvenient to eliminate those minimal
|
||
symbols anyway). */
|
||
msymbol = lookup_minimal_symbol_by_pc_section (addr, section);
|
||
symbol = find_pc_sect_function (addr, section);
|
||
|
||
if (symbol)
|
||
{
|
||
name_location = BLOCK_START (SYMBOL_BLOCK_VALUE (symbol));
|
||
if (do_demangle || asm_demangle)
|
||
name_temp = SYMBOL_PRINT_NAME (symbol);
|
||
else
|
||
name_temp = SYMBOL_LINKAGE_NAME (symbol);
|
||
}
|
||
|
||
if (msymbol != NULL)
|
||
{
|
||
if (SYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
|
||
{
|
||
/* The msymbol is closer to the address than the symbol;
|
||
use the msymbol instead. */
|
||
symbol = 0;
|
||
name_location = SYMBOL_VALUE_ADDRESS (msymbol);
|
||
if (do_demangle || asm_demangle)
|
||
name_temp = SYMBOL_PRINT_NAME (msymbol);
|
||
else
|
||
name_temp = SYMBOL_LINKAGE_NAME (msymbol);
|
||
}
|
||
}
|
||
if (symbol == NULL && msymbol == NULL)
|
||
return 1;
|
||
|
||
/* If the nearest symbol is too far away, don't print anything symbolic. */
|
||
|
||
/* For when CORE_ADDR is larger than unsigned int, we do math in
|
||
CORE_ADDR. But when we detect unsigned wraparound in the
|
||
CORE_ADDR math, we ignore this test and print the offset,
|
||
because addr+max_symbolic_offset has wrapped through the end
|
||
of the address space back to the beginning, giving bogus comparison. */
|
||
if (addr > name_location + max_symbolic_offset
|
||
&& name_location + max_symbolic_offset > name_location)
|
||
return 1;
|
||
|
||
*offset = addr - name_location;
|
||
|
||
*name = xstrdup (name_temp);
|
||
|
||
if (print_symbol_filename)
|
||
{
|
||
struct symtab_and_line sal;
|
||
|
||
sal = find_pc_sect_line (addr, section, 0);
|
||
|
||
if (sal.symtab)
|
||
{
|
||
*filename = xstrdup (sal.symtab->filename);
|
||
*line = sal.line;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Print address ADDR symbolically on STREAM.
|
||
First print it as a number. Then perhaps print
|
||
<SYMBOL + OFFSET> after the number. */
|
||
|
||
void
|
||
print_address (CORE_ADDR addr, struct ui_file *stream)
|
||
{
|
||
fputs_filtered (paddress (addr), stream);
|
||
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 (CORE_ADDR addr, struct ui_file *stream,
|
||
int do_demangle)
|
||
{
|
||
struct value_print_options opts;
|
||
get_user_print_options (&opts);
|
||
if (addr == 0)
|
||
{
|
||
fprintf_filtered (stream, "0");
|
||
}
|
||
else if (opts.addressprint)
|
||
{
|
||
fputs_filtered (paddress (addr), stream);
|
||
print_address_symbolic (addr, stream, do_demangle, " ");
|
||
}
|
||
else
|
||
{
|
||
print_address_symbolic (addr, stream, do_demangle, "");
|
||
}
|
||
}
|
||
|
||
|
||
/* These are the types that $__ will get after an examine command of one
|
||
of these sizes. */
|
||
|
||
static struct type *examine_i_type;
|
||
|
||
static struct type *examine_b_type;
|
||
static struct type *examine_h_type;
|
||
static struct type *examine_w_type;
|
||
static struct type *examine_g_type;
|
||
|
||
/* Examine data at address ADDR in format FMT.
|
||
Fetch it from memory and print on gdb_stdout. */
|
||
|
||
static void
|
||
do_examine (struct format_data fmt, CORE_ADDR addr)
|
||
{
|
||
char format = 0;
|
||
char size;
|
||
int count = 1;
|
||
struct type *val_type = NULL;
|
||
int i;
|
||
int maxelts;
|
||
struct value_print_options opts;
|
||
|
||
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 (format == 'i')
|
||
val_type = examine_i_type;
|
||
else if (size == 'b')
|
||
val_type = examine_b_type;
|
||
else if (size == 'h')
|
||
val_type = examine_h_type;
|
||
else if (size == 'w')
|
||
val_type = examine_w_type;
|
||
else if (size == 'g')
|
||
val_type = examine_g_type;
|
||
|
||
maxelts = 8;
|
||
if (size == 'w')
|
||
maxelts = 4;
|
||
if (size == 'g')
|
||
maxelts = 2;
|
||
if (format == 's' || format == 'i')
|
||
maxelts = 1;
|
||
|
||
get_formatted_print_options (&opts, format);
|
||
|
||
/* 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)
|
||
{
|
||
QUIT;
|
||
print_address (next_address, gdb_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;
|
||
|
||
if (last_examine_value)
|
||
value_free (last_examine_value);
|
||
|
||
/* The value to be displayed is not fetched greedily.
|
||
Instead, to avoid the possibility of a fetched value not
|
||
being used, its retrieval is delayed until the print code
|
||
uses it. When examining an instruction stream, the
|
||
disassembler will perform its own memory fetch using just
|
||
the address stored in LAST_EXAMINE_VALUE. FIXME: Should
|
||
the disassembler be modified so that LAST_EXAMINE_VALUE
|
||
is left with the byte sequence from the last complete
|
||
instruction fetched from memory? */
|
||
last_examine_value = value_at_lazy (val_type, next_address);
|
||
|
||
if (last_examine_value)
|
||
release_value (last_examine_value);
|
||
|
||
print_formatted (last_examine_value, size, &opts, gdb_stdout);
|
||
|
||
/* Display any branch delay slots following the final insn. */
|
||
if (format == 'i' && count == 1)
|
||
count += branch_delay_insns;
|
||
}
|
||
printf_filtered ("\n");
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
}
|
||
|
||
static void
|
||
validate_format (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')
|
||
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 (char *exp, int inspect, int voidprint)
|
||
{
|
||
struct expression *expr;
|
||
struct cleanup *old_chain = 0;
|
||
char format = 0;
|
||
struct value *val;
|
||
struct format_data fmt;
|
||
int cleanup = 0;
|
||
|
||
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)
|
||
{
|
||
struct type *type;
|
||
expr = parse_expression (exp);
|
||
old_chain = make_cleanup (free_current_contents, &expr);
|
||
cleanup = 1;
|
||
val = evaluate_expression (expr);
|
||
}
|
||
else
|
||
val = access_value_history (0);
|
||
|
||
if (voidprint || (val && value_type (val) &&
|
||
TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
|
||
{
|
||
struct value_print_options opts;
|
||
int histindex = record_latest_value (val);
|
||
|
||
if (histindex >= 0)
|
||
annotate_value_history_begin (histindex, value_type (val));
|
||
else
|
||
annotate_value_begin (value_type (val));
|
||
|
||
if (inspect)
|
||
printf_unfiltered ("\031(gdb-makebuffer \"%s\" %d '(\"",
|
||
exp, histindex);
|
||
else if (histindex >= 0)
|
||
printf_filtered ("$%d = ", histindex);
|
||
|
||
if (histindex >= 0)
|
||
annotate_value_history_value ();
|
||
|
||
get_formatted_print_options (&opts, format);
|
||
opts.inspect_it = inspect;
|
||
|
||
print_formatted (val, fmt.size, &opts, gdb_stdout);
|
||
printf_filtered ("\n");
|
||
|
||
if (histindex >= 0)
|
||
annotate_value_history_end ();
|
||
else
|
||
annotate_value_end ();
|
||
|
||
if (inspect)
|
||
printf_unfiltered ("\") )\030");
|
||
}
|
||
|
||
if (cleanup)
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
static void
|
||
print_command (char *exp, int from_tty)
|
||
{
|
||
print_command_1 (exp, 0, 1);
|
||
}
|
||
|
||
/* Same as print, except in epoch, it gets its own window. */
|
||
static void
|
||
inspect_command (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. */
|
||
static void
|
||
call_command (char *exp, int from_tty)
|
||
{
|
||
print_command_1 (exp, 0, 0);
|
||
}
|
||
|
||
void
|
||
output_command (char *exp, int from_tty)
|
||
{
|
||
struct expression *expr;
|
||
struct cleanup *old_chain;
|
||
char format = 0;
|
||
struct value *val;
|
||
struct format_data fmt;
|
||
struct value_print_options opts;
|
||
|
||
fmt.size = 0;
|
||
|
||
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);
|
||
|
||
annotate_value_begin (value_type (val));
|
||
|
||
get_formatted_print_options (&opts, format);
|
||
print_formatted (val, fmt.size, &opts, gdb_stdout);
|
||
|
||
annotate_value_end ();
|
||
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
static void
|
||
set_command (char *exp, int from_tty)
|
||
{
|
||
struct expression *expr = parse_expression (exp);
|
||
struct cleanup *old_chain =
|
||
make_cleanup (free_current_contents, &expr);
|
||
evaluate_expression (expr);
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
static void
|
||
sym_info (char *arg, int from_tty)
|
||
{
|
||
struct minimal_symbol *msymbol;
|
||
struct objfile *objfile;
|
||
struct obj_section *osect;
|
||
CORE_ADDR addr, sect_addr;
|
||
int matches = 0;
|
||
unsigned int offset;
|
||
|
||
if (!arg)
|
||
error_no_arg (_("address"));
|
||
|
||
addr = parse_and_eval_address (arg);
|
||
ALL_OBJSECTIONS (objfile, osect)
|
||
{
|
||
/* Only process each object file once, even if there's a separate
|
||
debug file. */
|
||
if (objfile->separate_debug_objfile_backlink)
|
||
continue;
|
||
|
||
sect_addr = overlay_mapped_address (addr, osect);
|
||
|
||
if (obj_section_addr (osect) <= sect_addr
|
||
&& sect_addr < obj_section_endaddr (osect)
|
||
&& (msymbol = lookup_minimal_symbol_by_pc_section (sect_addr, osect)))
|
||
{
|
||
const char *obj_name, *mapped, *sec_name, *msym_name;
|
||
char *loc_string;
|
||
struct cleanup *old_chain;
|
||
|
||
matches = 1;
|
||
offset = sect_addr - SYMBOL_VALUE_ADDRESS (msymbol);
|
||
mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
|
||
sec_name = osect->the_bfd_section->name;
|
||
msym_name = SYMBOL_PRINT_NAME (msymbol);
|
||
|
||
/* Don't print the offset if it is zero.
|
||
We assume there's no need to handle i18n of "sym + offset". */
|
||
if (offset)
|
||
xasprintf (&loc_string, "%s + %u", msym_name, offset);
|
||
else
|
||
xasprintf (&loc_string, "%s", msym_name);
|
||
|
||
/* Use a cleanup to free loc_string in case the user quits
|
||
a pagination request inside printf_filtered. */
|
||
old_chain = make_cleanup (xfree, loc_string);
|
||
|
||
gdb_assert (osect->objfile && osect->objfile->name);
|
||
obj_name = osect->objfile->name;
|
||
|
||
if (MULTI_OBJFILE_P ())
|
||
if (pc_in_unmapped_range (addr, osect))
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in load address range of "
|
||
"%s overlay section %s of %s\n"),
|
||
loc_string, mapped, sec_name, obj_name);
|
||
else
|
||
printf_filtered (_("%s in load address range of "
|
||
"section %s of %s\n"),
|
||
loc_string, sec_name, obj_name);
|
||
else
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in %s overlay section %s of %s\n"),
|
||
loc_string, mapped, sec_name, obj_name);
|
||
else
|
||
printf_filtered (_("%s in section %s of %s\n"),
|
||
loc_string, sec_name, obj_name);
|
||
else
|
||
if (pc_in_unmapped_range (addr, osect))
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in load address range of %s overlay "
|
||
"section %s\n"),
|
||
loc_string, mapped, sec_name);
|
||
else
|
||
printf_filtered (_("%s in load address range of section %s\n"),
|
||
loc_string, sec_name);
|
||
else
|
||
if (section_is_overlay (osect))
|
||
printf_filtered (_("%s in %s overlay section %s\n"),
|
||
loc_string, mapped, sec_name);
|
||
else
|
||
printf_filtered (_("%s in section %s\n"),
|
||
loc_string, sec_name);
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
}
|
||
if (matches == 0)
|
||
printf_filtered (_("No symbol matches %s.\n"), arg);
|
||
}
|
||
|
||
static void
|
||
address_info (char *exp, int from_tty)
|
||
{
|
||
struct symbol *sym;
|
||
struct minimal_symbol *msymbol;
|
||
long val;
|
||
struct obj_section *section;
|
||
CORE_ADDR load_addr;
|
||
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 (0), VAR_DOMAIN,
|
||
&is_a_field_of_this);
|
||
if (sym == NULL)
|
||
{
|
||
if (is_a_field_of_this)
|
||
{
|
||
printf_filtered ("Symbol \"");
|
||
fprintf_symbol_filtered (gdb_stdout, exp,
|
||
current_language->la_language, DMGL_ANSI);
|
||
printf_filtered ("\" is a field of the local class variable ");
|
||
if (current_language->la_language == language_objc)
|
||
printf_filtered ("`self'\n"); /* ObjC equivalent of "this" */
|
||
else
|
||
printf_filtered ("`this'\n");
|
||
return;
|
||
}
|
||
|
||
msymbol = lookup_minimal_symbol (exp, NULL, NULL);
|
||
|
||
if (msymbol != NULL)
|
||
{
|
||
load_addr = SYMBOL_VALUE_ADDRESS (msymbol);
|
||
|
||
printf_filtered ("Symbol \"");
|
||
fprintf_symbol_filtered (gdb_stdout, exp,
|
||
current_language->la_language, DMGL_ANSI);
|
||
printf_filtered ("\" is at ");
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
printf_filtered (" in a file compiled without debugging");
|
||
section = SYMBOL_OBJ_SECTION (msymbol);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (",\n -- loaded at ");
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
printf_filtered (" in overlay section %s",
|
||
section->the_bfd_section->name);
|
||
}
|
||
printf_filtered (".\n");
|
||
}
|
||
else
|
||
error (_("No symbol \"%s\" in current context."), exp);
|
||
return;
|
||
}
|
||
|
||
printf_filtered ("Symbol \"");
|
||
fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym),
|
||
current_language->la_language, DMGL_ANSI);
|
||
printf_filtered ("\" is ");
|
||
val = SYMBOL_VALUE (sym);
|
||
section = SYMBOL_OBJ_SECTION (sym);
|
||
|
||
switch (SYMBOL_CLASS (sym))
|
||
{
|
||
case LOC_CONST:
|
||
case LOC_CONST_BYTES:
|
||
printf_filtered ("constant");
|
||
break;
|
||
|
||
case LOC_LABEL:
|
||
printf_filtered ("a label at address ");
|
||
fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
|
||
gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (",\n -- loaded at ");
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
printf_filtered (" in overlay section %s",
|
||
section->the_bfd_section->name);
|
||
}
|
||
break;
|
||
|
||
case LOC_COMPUTED:
|
||
/* FIXME: cagney/2004-01-26: It should be possible to
|
||
unconditionally call the SYMBOL_OPS method when available.
|
||
Unfortunately DWARF 2 stores the frame-base (instead of the
|
||
function) location in a function's symbol. Oops! For the
|
||
moment enable this when/where applicable. */
|
||
SYMBOL_OPS (sym)->describe_location (sym, gdb_stdout);
|
||
break;
|
||
|
||
case LOC_REGISTER:
|
||
if (SYMBOL_IS_ARGUMENT (sym))
|
||
printf_filtered (_("an argument in register %s"),
|
||
gdbarch_register_name (current_gdbarch, val));
|
||
else
|
||
printf_filtered (_("a variable in register %s"),
|
||
gdbarch_register_name (current_gdbarch, val));
|
||
break;
|
||
|
||
case LOC_STATIC:
|
||
printf_filtered (_("static storage at address "));
|
||
fputs_filtered (paddress (load_addr = SYMBOL_VALUE_ADDRESS (sym)),
|
||
gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (_(",\n -- loaded at "));
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
printf_filtered (_(" in overlay section %s"),
|
||
section->the_bfd_section->name);
|
||
}
|
||
break;
|
||
|
||
case LOC_REGPARM_ADDR:
|
||
printf_filtered (_("address of an argument in register %s"),
|
||
gdbarch_register_name (current_gdbarch, val));
|
||
break;
|
||
|
||
case LOC_ARG:
|
||
printf_filtered (_("an argument at offset %ld"), val);
|
||
break;
|
||
|
||
case LOC_LOCAL:
|
||
printf_filtered (_("a local variable at frame offset %ld"), val);
|
||
break;
|
||
|
||
case LOC_REF_ARG:
|
||
printf_filtered (_("a reference argument at offset %ld"), val);
|
||
break;
|
||
|
||
case LOC_TYPEDEF:
|
||
printf_filtered (_("a typedef"));
|
||
break;
|
||
|
||
case LOC_BLOCK:
|
||
printf_filtered (_("a function at address "));
|
||
load_addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (_(",\n -- loaded at "));
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
printf_filtered (_(" in overlay section %s"),
|
||
section->the_bfd_section->name);
|
||
}
|
||
break;
|
||
|
||
case LOC_UNRESOLVED:
|
||
{
|
||
struct minimal_symbol *msym;
|
||
|
||
msym = lookup_minimal_symbol (SYMBOL_LINKAGE_NAME (sym), NULL, NULL);
|
||
if (msym == NULL)
|
||
printf_filtered ("unresolved");
|
||
else
|
||
{
|
||
section = SYMBOL_OBJ_SECTION (msym);
|
||
load_addr = SYMBOL_VALUE_ADDRESS (msym);
|
||
|
||
if (section
|
||
&& (section->the_bfd_section->flags & SEC_THREAD_LOCAL) != 0)
|
||
printf_filtered (_("a thread-local variable at offset %s "
|
||
"in the thread-local storage for `%s'"),
|
||
paddr_nz (load_addr), section->objfile->name);
|
||
else
|
||
{
|
||
printf_filtered (_("static storage at address "));
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
if (section_is_overlay (section))
|
||
{
|
||
load_addr = overlay_unmapped_address (load_addr, section);
|
||
printf_filtered (_(",\n -- loaded at "));
|
||
fputs_filtered (paddress (load_addr), gdb_stdout);
|
||
printf_filtered (_(" in overlay section %s"),
|
||
section->the_bfd_section->name);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case LOC_OPTIMIZED_OUT:
|
||
printf_filtered (_("optimized out"));
|
||
break;
|
||
|
||
default:
|
||
printf_filtered (_("of unknown (botched) type"));
|
||
break;
|
||
}
|
||
printf_filtered (".\n");
|
||
}
|
||
|
||
|
||
static void
|
||
x_command (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_address (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. */
|
||
struct type *pointer_type
|
||
= lookup_pointer_type (value_type (last_examine_value));
|
||
set_internalvar (lookup_internalvar ("_"),
|
||
value_from_pointer (pointer_type,
|
||
last_examine_address));
|
||
|
||
/* Make contents of last address examined available to the user
|
||
as $__. If the last value has not been fetched from memory
|
||
then don't fetch it now; instead mark it by voiding the $__
|
||
variable. */
|
||
if (value_lazy (last_examine_value))
|
||
set_internalvar (lookup_internalvar ("__"),
|
||
allocate_value (builtin_type_void));
|
||
else
|
||
set_internalvar (lookup_internalvar ("__"), last_examine_value);
|
||
}
|
||
}
|
||
|
||
|
||
/* Add an expression to the auto-display chain.
|
||
Specify the expression. */
|
||
|
||
static void
|
||
display_command (char *exp, int from_tty)
|
||
{
|
||
struct format_data fmt;
|
||
struct expression *expr;
|
||
struct display *new;
|
||
int display_it = 1;
|
||
|
||
#if defined(TUI)
|
||
/* NOTE: cagney/2003-02-13 The `tui_active' was previously
|
||
`tui_version'. */
|
||
if (tui_active && exp != NULL && *exp == '$')
|
||
display_it = (tui_set_layout_for_display_command (exp) == TUI_FAILURE);
|
||
#endif
|
||
|
||
if (display_it)
|
||
{
|
||
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 = NULL;
|
||
expr = parse_expression (exp);
|
||
|
||
new = (struct display *) xmalloc (sizeof (struct display));
|
||
|
||
new->exp_string = xstrdup (exp);
|
||
new->exp = expr;
|
||
new->block = innermost_block;
|
||
new->next = display_chain;
|
||
new->number = ++display_number;
|
||
new->format = fmt;
|
||
new->enabled_p = 1;
|
||
display_chain = new;
|
||
|
||
if (from_tty && target_has_execution)
|
||
do_one_display (new);
|
||
|
||
dont_repeat ();
|
||
}
|
||
}
|
||
|
||
static void
|
||
free_display (struct display *d)
|
||
{
|
||
xfree (d->exp_string);
|
||
xfree (d->exp);
|
||
xfree (d);
|
||
}
|
||
|
||
/* Clear out the display_chain. Done when new symtabs are loaded,
|
||
since this invalidates the types stored in many expressions. */
|
||
|
||
void
|
||
clear_displays (void)
|
||
{
|
||
struct display *d;
|
||
|
||
while ((d = display_chain) != NULL)
|
||
{
|
||
display_chain = d->next;
|
||
free_display (d);
|
||
}
|
||
}
|
||
|
||
/* Delete the auto-display number NUM. */
|
||
|
||
static void
|
||
delete_display (int num)
|
||
{
|
||
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 (char *args, int from_tty)
|
||
{
|
||
char *p = args;
|
||
char *p1;
|
||
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 (struct display *d)
|
||
{
|
||
int within_current_scope;
|
||
|
||
if (d->enabled_p == 0)
|
||
return;
|
||
|
||
if (d->exp == NULL)
|
||
{
|
||
volatile struct gdb_exception ex;
|
||
TRY_CATCH (ex, RETURN_MASK_ALL)
|
||
{
|
||
innermost_block = NULL;
|
||
d->exp = parse_expression (d->exp_string);
|
||
d->block = innermost_block;
|
||
}
|
||
if (ex.reason < 0)
|
||
{
|
||
/* Can't re-parse the expression. Disable this display item. */
|
||
d->enabled_p = 0;
|
||
warning (_("Unable to display \"%s\": %s"),
|
||
d->exp_string, ex.message);
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (d->block)
|
||
within_current_scope = contained_in (get_selected_block (0), d->block);
|
||
else
|
||
within_current_scope = 1;
|
||
if (!within_current_scope)
|
||
return;
|
||
|
||
current_display_number = d->number;
|
||
|
||
annotate_display_begin ();
|
||
printf_filtered ("%d", d->number);
|
||
annotate_display_number_end ();
|
||
printf_filtered (": ");
|
||
if (d->format.size)
|
||
{
|
||
CORE_ADDR addr;
|
||
struct value *val;
|
||
|
||
annotate_display_format ();
|
||
|
||
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 (" ");
|
||
|
||
annotate_display_expression ();
|
||
|
||
puts_filtered (d->exp_string);
|
||
annotate_display_expression_end ();
|
||
|
||
if (d->format.count != 1 || d->format.format == 'i')
|
||
printf_filtered ("\n");
|
||
else
|
||
printf_filtered (" ");
|
||
|
||
val = evaluate_expression (d->exp);
|
||
addr = value_as_address (val);
|
||
if (d->format.format == 'i')
|
||
addr = gdbarch_addr_bits_remove (current_gdbarch, addr);
|
||
|
||
annotate_display_value ();
|
||
|
||
do_examine (d->format, addr);
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts;
|
||
|
||
annotate_display_format ();
|
||
|
||
if (d->format.format)
|
||
printf_filtered ("/%c ", d->format.format);
|
||
|
||
annotate_display_expression ();
|
||
|
||
puts_filtered (d->exp_string);
|
||
annotate_display_expression_end ();
|
||
|
||
printf_filtered (" = ");
|
||
|
||
annotate_display_expression ();
|
||
|
||
get_formatted_print_options (&opts, d->format.format);
|
||
print_formatted (evaluate_expression (d->exp),
|
||
d->format.size, &opts, gdb_stdout);
|
||
printf_filtered ("\n");
|
||
}
|
||
|
||
annotate_display_end ();
|
||
|
||
gdb_flush (gdb_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 (void)
|
||
{
|
||
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 (int num)
|
||
{
|
||
struct display *d;
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
if (d->number == num)
|
||
{
|
||
d->enabled_p = 0;
|
||
return;
|
||
}
|
||
printf_unfiltered (_("No display number %d.\n"), num);
|
||
}
|
||
|
||
void
|
||
disable_current_display (void)
|
||
{
|
||
if (current_display_number >= 0)
|
||
{
|
||
disable_display (current_display_number);
|
||
fprintf_unfiltered (gdb_stderr, _("\
|
||
Disabling display %d to avoid infinite recursion.\n"),
|
||
current_display_number);
|
||
}
|
||
current_display_number = -1;
|
||
}
|
||
|
||
static void
|
||
display_info (char *ignore, int from_tty)
|
||
{
|
||
struct display *d;
|
||
|
||
if (!display_chain)
|
||
printf_unfiltered (_("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->enabled_p]);
|
||
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);
|
||
puts_filtered (d->exp_string);
|
||
if (d->block && !contained_in (get_selected_block (0), d->block))
|
||
printf_filtered (_(" (cannot be evaluated in the current context)"));
|
||
printf_filtered ("\n");
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
}
|
||
|
||
static void
|
||
enable_display (char *args, int from_tty)
|
||
{
|
||
char *p = args;
|
||
char *p1;
|
||
int num;
|
||
struct display *d;
|
||
|
||
if (p == 0)
|
||
{
|
||
for (d = display_chain; d; d = d->next)
|
||
d->enabled_p = 1;
|
||
}
|
||
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->enabled_p = 1;
|
||
goto win;
|
||
}
|
||
printf_unfiltered (_("No display number %d.\n"), num);
|
||
win:
|
||
p = p1;
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
}
|
||
}
|
||
|
||
static void
|
||
disable_display_command (char *args, int from_tty)
|
||
{
|
||
char *p = args;
|
||
char *p1;
|
||
struct display *d;
|
||
|
||
if (p == 0)
|
||
{
|
||
for (d = display_chain; d; d = d->next)
|
||
d->enabled_p = 0;
|
||
}
|
||
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++;
|
||
}
|
||
}
|
||
|
||
/* Return 1 if D uses SOLIB (and will become dangling when SOLIB
|
||
is unloaded), otherwise return 0. */
|
||
|
||
static int
|
||
display_uses_solib_p (const struct display *d,
|
||
const struct so_list *solib)
|
||
{
|
||
int i;
|
||
struct expression *const exp = d->exp;
|
||
|
||
if (d->block != NULL
|
||
&& solib_contains_address_p (solib, d->block->startaddr))
|
||
return 1;
|
||
|
||
for (i = 0; i < exp->nelts; )
|
||
{
|
||
int args, oplen = 0;
|
||
const union exp_element *const elts = exp->elts;
|
||
|
||
if (elts[i].opcode == OP_VAR_VALUE)
|
||
{
|
||
const struct block *const block = elts[i + 1].block;
|
||
const struct symbol *const symbol = elts[i + 2].symbol;
|
||
const struct obj_section *const section =
|
||
SYMBOL_OBJ_SECTION (symbol);
|
||
|
||
if (block != NULL
|
||
&& solib_contains_address_p (solib, block->startaddr))
|
||
return 1;
|
||
|
||
if (section && section->objfile == solib->objfile)
|
||
return 1;
|
||
}
|
||
exp->language_defn->la_exp_desc->operator_length (exp, i + 1,
|
||
&oplen, &args);
|
||
gdb_assert (oplen > 0);
|
||
i += oplen;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* display_chain items point to blocks and expressions. Some expressions in
|
||
turn may point to symbols.
|
||
Both symbols and blocks are obstack_alloc'd on objfile_stack, and are
|
||
obstack_free'd when a shared library is unloaded.
|
||
Clear pointers that are about to become dangling.
|
||
Both .exp and .block fields will be restored next time we need to display
|
||
an item by re-parsing .exp_string field in the new execution context. */
|
||
|
||
static void
|
||
clear_dangling_display_expressions (struct so_list *solib)
|
||
{
|
||
struct display *d;
|
||
struct objfile *objfile = NULL;
|
||
|
||
for (d = display_chain; d; d = d->next)
|
||
{
|
||
if (d->exp && display_uses_solib_p (d, solib))
|
||
{
|
||
xfree (d->exp);
|
||
d->exp = NULL;
|
||
d->block = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Print the value in stack frame FRAME of a variable specified by a
|
||
struct symbol. NAME is the name to print; if NULL then VAR's print
|
||
name will be used. STREAM is the ui_file on which to print the
|
||
value. INDENT specifies the number of indent levels to print
|
||
before printing the variable name. */
|
||
|
||
void
|
||
print_variable_and_value (const char *name, struct symbol *var,
|
||
struct frame_info *frame,
|
||
struct ui_file *stream, int indent)
|
||
{
|
||
struct value *val;
|
||
struct value_print_options opts;
|
||
|
||
if (!name)
|
||
name = SYMBOL_PRINT_NAME (var);
|
||
|
||
fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name);
|
||
|
||
val = read_var_value (var, frame);
|
||
get_user_print_options (&opts);
|
||
common_val_print (val, stream, indent, &opts, current_language);
|
||
fprintf_filtered (stream, "\n");
|
||
}
|
||
|
||
static void
|
||
printf_command (char *arg, int from_tty)
|
||
{
|
||
char *f = NULL;
|
||
char *s = arg;
|
||
char *string = NULL;
|
||
struct value **val_args;
|
||
char *substrings;
|
||
char *current_substring;
|
||
int nargs = 0;
|
||
int allocated_args = 20;
|
||
struct cleanup *old_cleanups;
|
||
|
||
val_args = xmalloc (allocated_args * sizeof (struct value *));
|
||
old_cleanups = make_cleanup (free_current_contents, &val_args);
|
||
|
||
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 '\"'."));
|
||
|
||
case '\\':
|
||
switch (c = *s++)
|
||
{
|
||
case '\\':
|
||
*f++ = '\\';
|
||
break;
|
||
case 'a':
|
||
*f++ = '\a';
|
||
break;
|
||
case 'b':
|
||
*f++ = '\b';
|
||
break;
|
||
case 'f':
|
||
*f++ = '\f';
|
||
break;
|
||
case 'n':
|
||
*f++ = '\n';
|
||
break;
|
||
case 'r':
|
||
*f++ = '\r';
|
||
break;
|
||
case 't':
|
||
*f++ = '\t';
|
||
break;
|
||
case 'v':
|
||
*f++ = '\v';
|
||
break;
|
||
case '"':
|
||
*f++ = '"';
|
||
break;
|
||
default:
|
||
/* ??? TODO: handle other escape sequences */
|
||
error (_("Unrecognized escape character \\%c in format string."),
|
||
c);
|
||
}
|
||
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++;
|
||
|
||
/* Need extra space for the '\0's. Doubling the size is sufficient. */
|
||
substrings = alloca (strlen (string) * 2);
|
||
current_substring = substrings;
|
||
|
||
{
|
||
/* Now scan the string for %-specs and see what kinds of args they want.
|
||
argclass[I] classifies the %-specs so we can give printf_filtered
|
||
something of the right size. */
|
||
|
||
enum argclass
|
||
{
|
||
int_arg, long_arg, long_long_arg, ptr_arg, string_arg,
|
||
double_arg, long_double_arg, decfloat_arg
|
||
};
|
||
enum argclass *argclass;
|
||
enum argclass this_argclass;
|
||
char *last_arg;
|
||
int nargs_wanted;
|
||
int i;
|
||
|
||
argclass = (enum argclass *) alloca (strlen (s) * sizeof *argclass);
|
||
nargs_wanted = 0;
|
||
f = string;
|
||
last_arg = string;
|
||
while (*f)
|
||
if (*f++ == '%')
|
||
{
|
||
int seen_hash = 0, seen_zero = 0, lcount = 0, seen_prec = 0;
|
||
int seen_space = 0, seen_plus = 0;
|
||
int seen_big_l = 0, seen_h = 0, seen_big_h = 0;
|
||
int seen_big_d = 0, seen_double_big_d = 0;
|
||
int bad = 0;
|
||
|
||
/* Check the validity of the format specifier, and work
|
||
out what argument it expects. We only accept C89
|
||
format strings, with the exception of long long (which
|
||
we autoconf for). */
|
||
|
||
/* Skip over "%%". */
|
||
if (*f == '%')
|
||
{
|
||
f++;
|
||
continue;
|
||
}
|
||
|
||
/* The first part of a format specifier is a set of flag
|
||
characters. */
|
||
while (strchr ("0-+ #", *f))
|
||
{
|
||
if (*f == '#')
|
||
seen_hash = 1;
|
||
else if (*f == '0')
|
||
seen_zero = 1;
|
||
else if (*f == ' ')
|
||
seen_space = 1;
|
||
else if (*f == '+')
|
||
seen_plus = 1;
|
||
f++;
|
||
}
|
||
|
||
/* The next part of a format specifier is a width. */
|
||
while (strchr ("0123456789", *f))
|
||
f++;
|
||
|
||
/* The next part of a format specifier is a precision. */
|
||
if (*f == '.')
|
||
{
|
||
seen_prec = 1;
|
||
f++;
|
||
while (strchr ("0123456789", *f))
|
||
f++;
|
||
}
|
||
|
||
/* The next part of a format specifier is a length modifier. */
|
||
if (*f == 'h')
|
||
{
|
||
seen_h = 1;
|
||
f++;
|
||
}
|
||
else if (*f == 'l')
|
||
{
|
||
f++;
|
||
lcount++;
|
||
if (*f == 'l')
|
||
{
|
||
f++;
|
||
lcount++;
|
||
}
|
||
}
|
||
else if (*f == 'L')
|
||
{
|
||
seen_big_l = 1;
|
||
f++;
|
||
}
|
||
/* Decimal32 modifier. */
|
||
else if (*f == 'H')
|
||
{
|
||
seen_big_h = 1;
|
||
f++;
|
||
}
|
||
/* Decimal64 and Decimal128 modifiers. */
|
||
else if (*f == 'D')
|
||
{
|
||
f++;
|
||
|
||
/* Check for a Decimal128. */
|
||
if (*f == 'D')
|
||
{
|
||
f++;
|
||
seen_double_big_d = 1;
|
||
}
|
||
else
|
||
seen_big_d = 1;
|
||
}
|
||
|
||
switch (*f)
|
||
{
|
||
case 'u':
|
||
if (seen_hash)
|
||
bad = 1;
|
||
/* FALLTHROUGH */
|
||
|
||
case 'o':
|
||
case 'x':
|
||
case 'X':
|
||
if (seen_space || seen_plus)
|
||
bad = 1;
|
||
/* FALLTHROUGH */
|
||
|
||
case 'd':
|
||
case 'i':
|
||
if (lcount == 0)
|
||
this_argclass = int_arg;
|
||
else if (lcount == 1)
|
||
this_argclass = long_arg;
|
||
else
|
||
this_argclass = long_long_arg;
|
||
|
||
if (seen_big_l)
|
||
bad = 1;
|
||
break;
|
||
|
||
case 'c':
|
||
this_argclass = int_arg;
|
||
if (lcount || seen_h || seen_big_l)
|
||
bad = 1;
|
||
if (seen_prec || seen_zero || seen_space || seen_plus)
|
||
bad = 1;
|
||
break;
|
||
|
||
case 'p':
|
||
this_argclass = ptr_arg;
|
||
if (lcount || seen_h || seen_big_l)
|
||
bad = 1;
|
||
if (seen_prec || seen_zero || seen_space || seen_plus)
|
||
bad = 1;
|
||
break;
|
||
|
||
case 's':
|
||
this_argclass = string_arg;
|
||
if (lcount || seen_h || seen_big_l)
|
||
bad = 1;
|
||
if (seen_zero || seen_space || seen_plus)
|
||
bad = 1;
|
||
break;
|
||
|
||
case 'e':
|
||
case 'f':
|
||
case 'g':
|
||
case 'E':
|
||
case 'G':
|
||
if (seen_big_h || seen_big_d || seen_double_big_d)
|
||
this_argclass = decfloat_arg;
|
||
else if (seen_big_l)
|
||
this_argclass = long_double_arg;
|
||
else
|
||
this_argclass = double_arg;
|
||
|
||
if (lcount || seen_h)
|
||
bad = 1;
|
||
break;
|
||
|
||
case '*':
|
||
error (_("`*' not supported for precision or width in printf"));
|
||
|
||
case 'n':
|
||
error (_("Format specifier `n' not supported in printf"));
|
||
|
||
case '\0':
|
||
error (_("Incomplete format specifier at end of format string"));
|
||
|
||
default:
|
||
error (_("Unrecognized format specifier '%c' in printf"), *f);
|
||
}
|
||
|
||
if (bad)
|
||
error (_("Inappropriate modifiers to format specifier '%c' in printf"),
|
||
*f);
|
||
|
||
f++;
|
||
|
||
if (lcount > 1 && USE_PRINTF_I64)
|
||
{
|
||
/* Windows' printf does support long long, but not the usual way.
|
||
Convert %lld to %I64d. */
|
||
int length_before_ll = f - last_arg - 1 - lcount;
|
||
strncpy (current_substring, last_arg, length_before_ll);
|
||
strcpy (current_substring + length_before_ll, "I64");
|
||
current_substring[length_before_ll + 3] =
|
||
last_arg[length_before_ll + lcount];
|
||
current_substring += length_before_ll + 4;
|
||
}
|
||
else
|
||
{
|
||
strncpy (current_substring, last_arg, f - last_arg);
|
||
current_substring += f - last_arg;
|
||
}
|
||
*current_substring++ = '\0';
|
||
last_arg = f;
|
||
argclass[nargs_wanted++] = this_argclass;
|
||
}
|
||
|
||
/* Now, parse all arguments and evaluate them.
|
||
Store the VALUEs in VAL_ARGS. */
|
||
|
||
while (*s != '\0')
|
||
{
|
||
char *s1;
|
||
if (nargs == allocated_args)
|
||
val_args = (struct value **) xrealloc ((char *) val_args,
|
||
(allocated_args *= 2)
|
||
* sizeof (struct value *));
|
||
s1 = s;
|
||
val_args[nargs] = parse_to_comma_and_eval (&s1);
|
||
|
||
nargs++;
|
||
s = s1;
|
||
if (*s == ',')
|
||
s++;
|
||
}
|
||
|
||
if (nargs != nargs_wanted)
|
||
error (_("Wrong number of arguments for specified format-string"));
|
||
|
||
/* Now actually print them. */
|
||
current_substring = substrings;
|
||
for (i = 0; i < nargs; i++)
|
||
{
|
||
switch (argclass[i])
|
||
{
|
||
case string_arg:
|
||
{
|
||
gdb_byte *str;
|
||
CORE_ADDR tem;
|
||
int j;
|
||
tem = value_as_address (val_args[i]);
|
||
|
||
/* This is a %s argument. Find the length of the string. */
|
||
for (j = 0;; j++)
|
||
{
|
||
gdb_byte c;
|
||
QUIT;
|
||
read_memory (tem + j, &c, 1);
|
||
if (c == 0)
|
||
break;
|
||
}
|
||
|
||
/* Copy the string contents into a string inside GDB. */
|
||
str = (gdb_byte *) alloca (j + 1);
|
||
if (j != 0)
|
||
read_memory (tem, str, j);
|
||
str[j] = 0;
|
||
|
||
printf_filtered (current_substring, (char *) str);
|
||
}
|
||
break;
|
||
case double_arg:
|
||
{
|
||
struct type *type = value_type (val_args[i]);
|
||
DOUBLEST val;
|
||
int inv;
|
||
|
||
/* If format string wants a float, unchecked-convert the value
|
||
to floating point of the same size. */
|
||
type = float_type_from_length (current_gdbarch, type);
|
||
val = unpack_double (type, value_contents (val_args[i]), &inv);
|
||
if (inv)
|
||
error (_("Invalid floating value found in program."));
|
||
|
||
printf_filtered (current_substring, (double) val);
|
||
break;
|
||
}
|
||
case long_double_arg:
|
||
#ifdef HAVE_LONG_DOUBLE
|
||
{
|
||
struct type *type = value_type (val_args[i]);
|
||
DOUBLEST val;
|
||
int inv;
|
||
|
||
/* If format string wants a float, unchecked-convert the value
|
||
to floating point of the same size. */
|
||
type = float_type_from_length (current_gdbarch, type);
|
||
val = unpack_double (type, value_contents (val_args[i]), &inv);
|
||
if (inv)
|
||
error (_("Invalid floating value found in program."));
|
||
|
||
printf_filtered (current_substring, (long double) val);
|
||
break;
|
||
}
|
||
#else
|
||
error (_("long double not supported in printf"));
|
||
#endif
|
||
case long_long_arg:
|
||
#if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
|
||
{
|
||
long long val = value_as_long (val_args[i]);
|
||
printf_filtered (current_substring, val);
|
||
break;
|
||
}
|
||
#else
|
||
error (_("long long not supported in printf"));
|
||
#endif
|
||
case int_arg:
|
||
{
|
||
int val = value_as_long (val_args[i]);
|
||
printf_filtered (current_substring, val);
|
||
break;
|
||
}
|
||
case long_arg:
|
||
{
|
||
long val = value_as_long (val_args[i]);
|
||
printf_filtered (current_substring, val);
|
||
break;
|
||
}
|
||
|
||
/* Handles decimal floating values. */
|
||
case decfloat_arg:
|
||
{
|
||
const gdb_byte *param_ptr = value_contents (val_args[i]);
|
||
#if defined (PRINTF_HAS_DECFLOAT)
|
||
/* If we have native support for Decimal floating
|
||
printing, handle it here. */
|
||
printf_filtered (current_substring, param_ptr);
|
||
#else
|
||
|
||
/* As a workaround until vasprintf has native support for DFP
|
||
we convert the DFP values to string and print them using
|
||
the %s format specifier. */
|
||
|
||
char *eos, *sos;
|
||
int nnull_chars = 0;
|
||
|
||
/* Parameter data. */
|
||
struct type *param_type = value_type (val_args[i]);
|
||
unsigned int param_len = TYPE_LENGTH (param_type);
|
||
|
||
/* DFP output data. */
|
||
struct value *dfp_value = NULL;
|
||
gdb_byte *dfp_ptr;
|
||
int dfp_len = 16;
|
||
gdb_byte dec[16];
|
||
struct type *dfp_type = NULL;
|
||
char decstr[MAX_DECIMAL_STRING];
|
||
|
||
/* Points to the end of the string so that we can go back
|
||
and check for DFP length modifiers. */
|
||
eos = current_substring + strlen (current_substring);
|
||
|
||
/* Look for the float/double format specifier. */
|
||
while (*eos != 'f' && *eos != 'e' && *eos != 'E'
|
||
&& *eos != 'g' && *eos != 'G')
|
||
eos--;
|
||
|
||
sos = eos;
|
||
|
||
/* Search for the '%' char and extract the size and type of
|
||
the output decimal value based on its modifiers
|
||
(%Hf, %Df, %DDf). */
|
||
while (*--sos != '%')
|
||
{
|
||
if (*sos == 'H')
|
||
{
|
||
dfp_len = 4;
|
||
dfp_type = builtin_type (current_gdbarch)->builtin_decfloat;
|
||
}
|
||
else if (*sos == 'D' && *(sos - 1) == 'D')
|
||
{
|
||
dfp_len = 16;
|
||
dfp_type = builtin_type (current_gdbarch)->builtin_declong;
|
||
sos--;
|
||
}
|
||
else
|
||
{
|
||
dfp_len = 8;
|
||
dfp_type = builtin_type (current_gdbarch)->builtin_decdouble;
|
||
}
|
||
}
|
||
|
||
/* Replace %Hf, %Df and %DDf with %s's. */
|
||
*++sos = 's';
|
||
|
||
/* Go through the whole format string and pull the correct
|
||
number of chars back to compensate for the change in the
|
||
format specifier. */
|
||
while (nnull_chars < nargs - i)
|
||
{
|
||
if (*eos == '\0')
|
||
nnull_chars++;
|
||
|
||
*++sos = *++eos;
|
||
}
|
||
|
||
/* Conversion between different DFP types. */
|
||
if (TYPE_CODE (param_type) == TYPE_CODE_DECFLOAT)
|
||
decimal_convert (param_ptr, param_len, dec, dfp_len);
|
||
else
|
||
/* If this is a non-trivial conversion, just output 0.
|
||
A correct converted value can be displayed by explicitly
|
||
casting to a DFP type. */
|
||
decimal_from_string (dec, dfp_len, "0");
|
||
|
||
dfp_value = value_from_decfloat (dfp_type, dec);
|
||
|
||
dfp_ptr = (gdb_byte *) value_contents (dfp_value);
|
||
|
||
decimal_to_string (dfp_ptr, dfp_len, decstr);
|
||
|
||
/* Print the DFP value. */
|
||
printf_filtered (current_substring, decstr);
|
||
|
||
break;
|
||
#endif
|
||
}
|
||
|
||
case ptr_arg:
|
||
{
|
||
/* We avoid the host's %p because pointers are too
|
||
likely to be the wrong size. The only interesting
|
||
modifier for %p is a width; extract that, and then
|
||
handle %p as glibc would: %#x or a literal "(nil)". */
|
||
|
||
char *p, *fmt, *fmt_p;
|
||
#if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
|
||
long long val = value_as_long (val_args[i]);
|
||
#else
|
||
long val = value_as_long (val_args[i]);
|
||
#endif
|
||
|
||
fmt = alloca (strlen (current_substring) + 5);
|
||
|
||
/* Copy up to the leading %. */
|
||
p = current_substring;
|
||
fmt_p = fmt;
|
||
while (*p)
|
||
{
|
||
int is_percent = (*p == '%');
|
||
*fmt_p++ = *p++;
|
||
if (is_percent)
|
||
{
|
||
if (*p == '%')
|
||
*fmt_p++ = *p++;
|
||
else
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (val != 0)
|
||
*fmt_p++ = '#';
|
||
|
||
/* Copy any width. */
|
||
while (*p >= '0' && *p < '9')
|
||
*fmt_p++ = *p++;
|
||
|
||
gdb_assert (*p == 'p' && *(p + 1) == '\0');
|
||
if (val != 0)
|
||
{
|
||
#if defined (CC_HAS_LONG_LONG) && defined (PRINTF_HAS_LONG_LONG)
|
||
*fmt_p++ = 'l';
|
||
#endif
|
||
*fmt_p++ = 'l';
|
||
*fmt_p++ = 'x';
|
||
*fmt_p++ = '\0';
|
||
printf_filtered (fmt, val);
|
||
}
|
||
else
|
||
{
|
||
*fmt_p++ = 's';
|
||
*fmt_p++ = '\0';
|
||
printf_filtered (fmt, "(nil)");
|
||
}
|
||
|
||
break;
|
||
}
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
_("failed internal consistency check"));
|
||
}
|
||
/* Skip to the next substring. */
|
||
current_substring += strlen (current_substring) + 1;
|
||
}
|
||
/* Print the portion of the format string after the last argument. */
|
||
puts_filtered (last_arg);
|
||
}
|
||
do_cleanups (old_cleanups);
|
||
}
|
||
|
||
void
|
||
_initialize_printcmd (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
current_display_number = -1;
|
||
|
||
observer_attach_solib_unloaded (clear_dangling_display_expressions);
|
||
|
||
add_info ("address", address_info,
|
||
_("Describe where symbol SYM is stored."));
|
||
|
||
add_info ("symbol", sym_info, _("\
|
||
Describe what symbol is at location ADDR.\n\
|
||
Only for symbols with fixed locations (global or static scope)."));
|
||
|
||
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\
|
||
t(binary), 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\
|
||
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\"."));
|
||
|
||
#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\
|
||
\n\
|
||
With 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);
|
||
if (dbx_commands)
|
||
add_com ("assign", 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."));
|
||
|
||
/* "call" is the same as "set", but handy for dbx users to call fns. */
|
||
c = add_com ("call", class_vars, call_command, _("\
|
||
Call a function in the program.\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."));
|
||
set_cmd_completer (c, expression_completer);
|
||
|
||
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);
|
||
|
||
c = add_com ("print", class_vars, print_command, _("\
|
||
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)."));
|
||
set_cmd_completer (c, expression_completer);
|
||
add_com_alias ("p", "print", class_vars, 1);
|
||
|
||
c = 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."));
|
||
set_cmd_completer (c, expression_completer);
|
||
|
||
add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
|
||
&max_symbolic_offset, _("\
|
||
Set the largest offset that will be printed in <symbol+1234> form."), _("\
|
||
Show the largest offset that will be printed in <symbol+1234> form."), NULL,
|
||
NULL,
|
||
show_max_symbolic_offset,
|
||
&setprintlist, &showprintlist);
|
||
add_setshow_boolean_cmd ("symbol-filename", no_class,
|
||
&print_symbol_filename, _("\
|
||
Set printing of source filename and line number with <symbol>."), _("\
|
||
Show printing of source filename and line number with <symbol>."), NULL,
|
||
NULL,
|
||
show_print_symbol_filename,
|
||
&setprintlist, &showprintlist);
|
||
|
||
/* For examine/instruction a single byte quantity is specified as
|
||
the data. This avoids problems with value_at_lazy() requiring a
|
||
valid data type (and rejecting VOID). */
|
||
examine_i_type = init_type (TYPE_CODE_INT, 1, 0, "examine_i_type", NULL);
|
||
|
||
examine_b_type = init_type (TYPE_CODE_INT, 1, 0, "examine_b_type", NULL);
|
||
examine_h_type = init_type (TYPE_CODE_INT, 2, 0, "examine_h_type", NULL);
|
||
examine_w_type = init_type (TYPE_CODE_INT, 4, 0, "examine_w_type", NULL);
|
||
examine_g_type = init_type (TYPE_CODE_INT, 8, 0, "examine_g_type", NULL);
|
||
|
||
}
|