-/* Print values for GNU debugger gdb.
- Copyright (C) 1986, 1988, 1989 Free Software Foundation, Inc.
+/* Print values for GDB, the GNU debugger.
-This file is part of GDB.
+ Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+ 2009, 2010 Free Software Foundation, Inc.
-GDB 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 1, or (at your option)
-any later version.
+ This file is part of GDB.
-GDB 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.
+ 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.
-You should have received a copy of the GNU General Public License
-along with GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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 <stdio.h>
#include "defs.h"
-#include "param.h"
+#include "gdb_string.h"
#include "symtab.h"
+#include "gdbtypes.h"
#include "value.h"
+#include "gdbcore.h"
+#include "gdbcmd.h"
+#include "target.h"
+#include "language.h"
+#include "annotate.h"
+#include "valprint.h"
+#include "floatformat.h"
+#include "doublest.h"
+#include "exceptions.h"
+#include "dfp.h"
+#include "python/python.h"
+#include "ada-lang.h"
-/* GNU software is only expected to run on systems with 32-bit integers. */
-#define UINT_MAX 0xffffffff
+#include <errno.h>
-/* Maximum number of chars to print for a string pointer value
- or vector contents, or UINT_MAX for no limit. */
+/* Prototypes for local functions */
-static unsigned int print_max;
+static int partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
+ int len, int *errnoptr);
-static void type_print_varspec_suffix ();
-static void type_print_varspec_prefix ();
-static void type_print_base ();
-static void type_print_method_args ();
+static void show_print (char *, int);
+static void set_print (char *, int);
-char **unsigned_type_table;
-char **signed_type_table;
-char **float_type_table;
+static void set_radix (char *, int);
+static void show_radix (char *, int);
-/* Print repeat counts if there are more than this
- many repetitions of an element in an array. */
-#define REPEAT_COUNT_THRESHOLD 10
-\f
-/* Print the character string STRING, printing at most LENGTH characters.
- Printing stops early if the number hits print_max; repeat counts
- are printed as appropriate. Print ellipses at the end if we
- had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */
+static void set_input_radix (char *, int, struct cmd_list_element *);
+
+static void set_input_radix_1 (int, unsigned);
+
+static void set_output_radix (char *, int, struct cmd_list_element *);
+
+static void set_output_radix_1 (int, unsigned);
+
+void _initialize_valprint (void);
+#define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
+
+struct value_print_options user_print_options =
+{
+ Val_pretty_default, /* pretty */
+ 0, /* prettyprint_arrays */
+ 0, /* prettyprint_structs */
+ 0, /* vtblprint */
+ 1, /* unionprint */
+ 1, /* addressprint */
+ 0, /* objectprint */
+ PRINT_MAX_DEFAULT, /* print_max */
+ 10, /* repeat_count_threshold */
+ 0, /* output_format */
+ 0, /* format */
+ 0, /* stop_print_at_null */
+ 0, /* inspect_it */
+ 0, /* print_array_indexes */
+ 0, /* deref_ref */
+ 1, /* static_field_print */
+ 1, /* pascal_static_field_print */
+ 0, /* raw */
+ 0 /* summary */
+};
+
+/* Initialize *OPTS to be a copy of the user print options. */
void
-print_string (stream, string, length, force_ellipses)
- FILE *stream;
- char *string;
- unsigned int length;
- int force_ellipses;
+get_user_print_options (struct value_print_options *opts)
{
- register unsigned int i;
- unsigned int things_printed = 0;
- int in_quotes = 0;
- int need_comma = 0;
+ *opts = user_print_options;
+}
+
+/* Initialize *OPTS to be a copy of the user print options, but with
+ pretty-printing disabled. */
+void
+get_raw_print_options (struct value_print_options *opts)
+{
+ *opts = user_print_options;
+ opts->pretty = Val_no_prettyprint;
+}
+
+/* Initialize *OPTS to be a copy of the user print options, but using
+ FORMAT as the formatting option. */
+void
+get_formatted_print_options (struct value_print_options *opts,
+ char format)
+{
+ *opts = user_print_options;
+ opts->format = format;
+}
+
+static void
+show_print_max (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Limit on string chars or array elements to print is %s.\n"),
+ value);
+}
+
+
+/* Default input and output radixes, and output format letter. */
+
+unsigned input_radix = 10;
+static void
+show_input_radix (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Default input radix for entering numbers is %s.\n"),
+ value);
+}
+
+unsigned output_radix = 10;
+static void
+show_output_radix (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Default output radix for printing of values is %s.\n"),
+ value);
+}
+
+/* By default we print arrays without printing the index of each element in
+ the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
+
+static void
+show_print_array_indexes (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Printing of array indexes is %s.\n"), value);
+}
+
+/* Print repeat counts if there are more than this many repetitions of an
+ element in an array. Referenced by the low level language dependent
+ print routines. */
+
+static void
+show_repeat_count_threshold (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Threshold for repeated print elements is %s.\n"),
+ value);
+}
+
+/* If nonzero, stops printing of char arrays at first null. */
- if (length == 0)
+static void
+show_stop_print_at_null (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Printing of char arrays to stop at first null char is %s.\n"),
+ value);
+}
+
+/* Controls pretty printing of structures. */
+
+static void
+show_prettyprint_structs (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Prettyprinting of structures is %s.\n"), value);
+}
+
+/* Controls pretty printing of arrays. */
+
+static void
+show_prettyprint_arrays (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Prettyprinting of arrays is %s.\n"), value);
+}
+
+/* If nonzero, causes unions inside structures or other unions to be
+ printed. */
+
+static void
+show_unionprint (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("\
+Printing of unions interior to structures is %s.\n"),
+ value);
+}
+
+/* If nonzero, causes machine addresses to be printed in certain contexts. */
+
+static void
+show_addressprint (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Printing of addresses is %s.\n"), value);
+}
+\f
+
+/* A helper function for val_print. When printing in "summary" mode,
+ we want to print scalar arguments, but not aggregate arguments.
+ This function distinguishes between the two. */
+
+static int
+scalar_type_p (struct type *type)
+{
+ CHECK_TYPEDEF (type);
+ while (TYPE_CODE (type) == TYPE_CODE_REF)
{
- fputs_filtered ("\"\"", stdout);
- return;
+ type = TYPE_TARGET_TYPE (type);
+ CHECK_TYPEDEF (type);
}
-
- for (i = 0; i < length && things_printed < print_max; ++i)
+ switch (TYPE_CODE (type))
{
- /* Position of the character we are examining
- to see whether it is repeated. */
- unsigned int rep1;
- /* Number of repititions we have detected so far. */
- unsigned int reps;
+ case TYPE_CODE_ARRAY:
+ case TYPE_CODE_STRUCT:
+ case TYPE_CODE_UNION:
+ case TYPE_CODE_SET:
+ case TYPE_CODE_STRING:
+ case TYPE_CODE_BITSTRING:
+ return 0;
+ default:
+ return 1;
+ }
+}
- QUIT;
+/* Helper function to check the validity of some bits of a value.
+
+ If TYPE represents some aggregate type (e.g., a structure), return 1.
+
+ Otherwise, any of the bytes starting at OFFSET and extending for
+ TYPE_LENGTH(TYPE) bytes are invalid, print a message to STREAM and
+ return 0. The checking is done using FUNCS.
+
+ Otherwise, return 1. */
+
+static int
+valprint_check_validity (struct ui_file *stream,
+ struct type *type,
+ int offset,
+ const struct value *val)
+{
+ CHECK_TYPEDEF (type);
- if (need_comma)
+ if (TYPE_CODE (type) != TYPE_CODE_UNION
+ && TYPE_CODE (type) != TYPE_CODE_STRUCT
+ && TYPE_CODE (type) != TYPE_CODE_ARRAY)
+ {
+ if (! value_bits_valid (val, TARGET_CHAR_BIT * offset,
+ TARGET_CHAR_BIT * TYPE_LENGTH (type)))
{
- fputs_filtered (", ", stream);
- need_comma = 0;
+ fprintf_filtered (stream, _("<value optimized out>"));
+ return 0;
}
+ }
- rep1 = i + 1;
- reps = 1;
- while (rep1 < length && string[rep1] == string[i])
- {
- ++rep1;
- ++reps;
- }
+ return 1;
+}
- if (reps > REPEAT_COUNT_THRESHOLD)
- {
- if (in_quotes)
- {
- fputs_filtered ("\", ", stream);
- in_quotes = 0;
- }
- fputs_filtered ("'", stream);
- printchar (string[i], stream, '\'');
- fprintf_filtered (stream, "' <repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += REPEAT_COUNT_THRESHOLD;
- need_comma = 1;
- }
- else
- {
- if (!in_quotes)
- {
- fputs_filtered ("\"", stream);
- in_quotes = 1;
- }
- printchar (string[i], stream, '"');
- ++things_printed;
- }
+/* Print using the given LANGUAGE the data of type TYPE located at VALADDR
+ (within GDB), which came from the inferior at address ADDRESS, onto
+ stdio stream STREAM according to OPTIONS.
+
+ If the data are a string pointer, returns the number of string characters
+ printed.
+
+ FIXME: The data at VALADDR is in target byte order. If gdb is ever
+ enhanced to be able to debug more than the single target it was compiled
+ for (specific CPU type and thus specific target byte ordering), then
+ either the print routines are going to have to take this into account,
+ or the data is going to have to be passed into here already converted
+ to the host byte ordering, whichever is more convenient. */
+
+
+int
+val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
+ CORE_ADDR address, struct ui_file *stream, int recurse,
+ const struct value *val,
+ const struct value_print_options *options,
+ const struct language_defn *language)
+{
+ volatile struct gdb_exception except;
+ int ret = 0;
+ struct value_print_options local_opts = *options;
+ struct type *real_type = check_typedef (type);
+
+ if (local_opts.pretty == Val_pretty_default)
+ local_opts.pretty = (local_opts.prettyprint_structs
+ ? Val_prettyprint : Val_no_prettyprint);
+
+ QUIT;
+
+ /* Ensure that the type is complete and not just a stub. If the type is
+ only a stub and we can't find and substitute its complete type, then
+ print appropriate string and return. */
+
+ if (TYPE_STUB (real_type))
+ {
+ fprintf_filtered (stream, _("<incomplete type>"));
+ gdb_flush (stream);
+ return (0);
}
- /* Terminate the quotes if necessary. */
- if (in_quotes)
- fputs_filtered ("\"", stream);
+ if (!valprint_check_validity (stream, real_type, embedded_offset, val))
+ return 0;
- if (force_ellipses || i < length)
- fputs_filtered ("...", stream);
+ if (!options->raw)
+ {
+ ret = apply_val_pretty_printer (type, valaddr, embedded_offset,
+ address, stream, recurse,
+ val, options, language);
+ if (ret)
+ return ret;
+ }
+
+ /* Handle summary mode. If the value is a scalar, print it;
+ otherwise, print an ellipsis. */
+ if (options->summary && !scalar_type_p (type))
+ {
+ fprintf_filtered (stream, "...");
+ return 0;
+ }
+
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ ret = language->la_val_print (type, valaddr, embedded_offset, address,
+ stream, recurse, val,
+ &local_opts);
+ }
+ if (except.reason < 0)
+ fprintf_filtered (stream, _("<error reading variable>"));
+
+ return ret;
}
-\f
-/* Print the value VAL in C-ish syntax on stream STREAM.
- FORMAT is a format-letter, or 0 for print in natural format of data type.
- If the object printed is a string pointer, returns
- the number of string bytes printed. */
+
+/* Check whether the value VAL is printable. Return 1 if it is;
+ return 0 and print an appropriate error message to STREAM if it
+ is not. */
+
+static int
+value_check_printable (struct value *val, struct ui_file *stream)
+{
+ if (val == 0)
+ {
+ fprintf_filtered (stream, _("<address of value unknown>"));
+ return 0;
+ }
+
+ if (value_entirely_optimized_out (val))
+ {
+ fprintf_filtered (stream, _("<value optimized out>"));
+ return 0;
+ }
+
+ if (TYPE_CODE (value_type (val)) == TYPE_CODE_INTERNAL_FUNCTION)
+ {
+ fprintf_filtered (stream, _("<internal function %s>"),
+ value_internal_function_name (val));
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Print using the given LANGUAGE the value VAL onto stream STREAM according
+ to OPTIONS.
+
+ If the data are a string pointer, returns the number of string characters
+ printed.
+
+ This is a preferable interface to val_print, above, because it uses
+ GDB's value mechanism. */
+
+int
+common_val_print (struct value *val, struct ui_file *stream, int recurse,
+ const struct value_print_options *options,
+ const struct language_defn *language)
+{
+ if (!value_check_printable (val, stream))
+ return 0;
+
+ if (language->la_language == language_ada)
+ /* The value might have a dynamic type, which would cause trouble
+ below when trying to extract the value contents (since the value
+ size is determined from the type size which is unknown). So
+ get a fixed representation of our value. */
+ val = ada_to_fixed_value (val);
+
+ return val_print (value_type (val), value_contents_for_printing (val),
+ value_embedded_offset (val), value_address (val),
+ stream, recurse,
+ val, options, language);
+}
+
+/* Print on stream STREAM the value VAL according to OPTIONS. The value
+ is printed using the current_language syntax.
+
+ If the object printed is a string pointer, return the number of string
+ bytes printed. */
int
-value_print (val, stream, format, pretty)
- value val;
- FILE *stream;
- char format;
- enum val_prettyprint pretty;
+value_print (struct value *val, struct ui_file *stream,
+ const struct value_print_options *options)
{
- register unsigned int i, n, typelen;
+ if (!value_check_printable (val, stream))
+ return 0;
- /* A "repeated" value really contains several values in a row.
- They are made by the @ operator.
- Print such values as if they were arrays. */
+ if (!options->raw)
+ {
+ int r = apply_val_pretty_printer (value_type (val),
+ value_contents_for_printing (val),
+ value_embedded_offset (val),
+ value_address (val),
+ stream, 0,
+ val, options, current_language);
+
+ if (r)
+ return r;
+ }
+
+ return LA_VALUE_PRINT (val, stream, options);
+}
+
+/* Called by various <lang>_val_print routines to print
+ TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
+ value. STREAM is where to print the value. */
- if (VALUE_REPEATED (val))
+void
+val_print_type_code_int (struct type *type, const gdb_byte *valaddr,
+ struct ui_file *stream)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
+
+ if (TYPE_LENGTH (type) > sizeof (LONGEST))
{
- n = VALUE_REPETITIONS (val);
- typelen = TYPE_LENGTH (VALUE_TYPE (val));
- fprintf_filtered (stream, "{");
- /* Print arrays of characters using string syntax. */
- if (typelen == 1 && TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT
- && format == 0)
- print_string (stream, VALUE_CONTENTS (val), n, 0);
+ LONGEST val;
+
+ if (TYPE_UNSIGNED (type)
+ && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type),
+ byte_order, &val))
+ {
+ print_longest (stream, 'u', 0, val);
+ }
else
{
- unsigned int things_printed = 0;
-
- for (i = 0; i < n && things_printed < print_max; i++)
- {
- /* Position of the array element we are examining to see
- whether it is repeated. */
- unsigned int rep1;
- /* Number of repititions we have detected so far. */
- unsigned int reps;
-
- if (i != 0)
- fprintf_filtered (stream, ", ");
-
- rep1 = i + 1;
- reps = 1;
- while (rep1 < n
- && !bcmp (VALUE_CONTENTS (val) + typelen * i,
- VALUE_CONTENTS (val) + typelen * rep1, typelen))
- {
- ++reps;
- ++rep1;
- }
-
- if (reps > REPEAT_COUNT_THRESHOLD)
- {
- val_print (VALUE_TYPE (val),
- VALUE_CONTENTS (val) + typelen * i,
- VALUE_ADDRESS (val) + typelen * i,
- stream, format, 1, 0, pretty);
- fprintf (stream, " <repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += REPEAT_COUNT_THRESHOLD;
- }
- else
- {
- val_print (VALUE_TYPE (val),
- VALUE_CONTENTS (val) + typelen * i,
- VALUE_ADDRESS (val) + typelen * i,
- stream, format, 1, 0, pretty);
- things_printed++;
- }
- }
- if (i < n)
- fprintf_filtered (stream, "...");
+ /* Signed, or we couldn't turn an unsigned value into a
+ LONGEST. For signed values, one could assume two's
+ complement (a reasonable assumption, I think) and do
+ better than this. */
+ print_hex_chars (stream, (unsigned char *) valaddr,
+ TYPE_LENGTH (type), byte_order);
}
- fprintf_filtered (stream, "}");
- return n * typelen;
}
else
{
- /* If it is a pointer, indicate what it points to.
+ print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0,
+ unpack_long (type, valaddr));
+ }
+}
- Print type also if it is a reference.
+void
+val_print_type_code_flags (struct type *type, const gdb_byte *valaddr,
+ struct ui_file *stream)
+{
+ ULONGEST val = unpack_long (type, valaddr);
+ int bitpos, nfields = TYPE_NFIELDS (type);
- C++: if it is a member pointer, we will take care
- of that when we print it. */
- if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_PTR
- || TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_REF)
+ fputs_filtered ("[ ", stream);
+ for (bitpos = 0; bitpos < nfields; bitpos++)
+ {
+ if (TYPE_FIELD_BITPOS (type, bitpos) != -1
+ && (val & ((ULONGEST)1 << bitpos)))
{
- fprintf_filtered (stream, "(");
- type_print (VALUE_TYPE (val), "", stream, -1);
- fprintf_filtered (stream, ") ");
-
- /* If this is a function pointer, try to print what
- function it is pointing to by name. */
- if (TYPE_CODE (TYPE_TARGET_TYPE (VALUE_TYPE (val)))
- == TYPE_CODE_FUNC)
- {
- print_address (((int *) VALUE_CONTENTS (val))[0], stream);
- /* Return value is irrelevant except for string pointers. */
- return 0;
- }
+ if (TYPE_FIELD_NAME (type, bitpos))
+ fprintf_filtered (stream, "%s ", TYPE_FIELD_NAME (type, bitpos));
+ else
+ fprintf_filtered (stream, "#%d ", bitpos);
}
- return val_print (VALUE_TYPE (val), VALUE_CONTENTS (val),
- VALUE_ADDRESS (val), stream, format, 1, 0, pretty);
}
+ fputs_filtered ("]", stream);
}
-\f
-static int prettyprint; /* Controls prettyprinting of structures. */
-int unionprint; /* Controls printing of nested unions. */
-/* Print data of type TYPE located at VALADDR (within GDB),
- which came from the inferior at address ADDRESS,
- onto stdio stream STREAM according to FORMAT
- (a letter or 0 for natural format).
+/* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
+ The raison d'etre of this function is to consolidate printing of
+ LONG_LONG's into this one function. The format chars b,h,w,g are
+ from print_scalar_formatted(). Numbers are printed using C
+ format.
+
+ USE_C_FORMAT means to use C format in all cases. Without it,
+ 'o' and 'x' format do not include the standard C radix prefix
+ (leading 0 or 0x).
+
+ Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
+ and was intended to request formating according to the current
+ language and would be used for most integers that GDB prints. The
+ exceptional cases were things like protocols where the format of
+ the integer is a protocol thing, not a user-visible thing). The
+ parameter remains to preserve the information of what things might
+ be printed with language-specific format, should we ever resurrect
+ that capability. */
- If the data are a string pointer, returns the number of
- sting characters printed.
+void
+print_longest (struct ui_file *stream, int format, int use_c_format,
+ LONGEST val_long)
+{
+ const char *val;
- if DEREF_REF is nonzero, then dereference references,
- otherwise just print them like pointers.
+ switch (format)
+ {
+ case 'd':
+ val = int_string (val_long, 10, 1, 0, 1); break;
+ case 'u':
+ val = int_string (val_long, 10, 0, 0, 1); break;
+ case 'x':
+ val = int_string (val_long, 16, 0, 0, use_c_format); break;
+ case 'b':
+ val = int_string (val_long, 16, 0, 2, 1); break;
+ case 'h':
+ val = int_string (val_long, 16, 0, 4, 1); break;
+ case 'w':
+ val = int_string (val_long, 16, 0, 8, 1); break;
+ case 'g':
+ val = int_string (val_long, 16, 0, 16, 1); break;
+ break;
+ case 'o':
+ val = int_string (val_long, 8, 0, 0, use_c_format); break;
+ default:
+ internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
+ }
+ fputs_filtered (val, stream);
+}
- The PRETTY parameter controls prettyprinting. */
+/* This used to be a macro, but I don't think it is called often enough
+ to merit such treatment. */
+/* Convert a LONGEST to an int. This is used in contexts (e.g. number of
+ arguments to a function, number in a value history, register number, etc.)
+ where the value must not be larger than can fit in an int. */
int
-val_print (type, valaddr, address, stream, format,
- deref_ref, recurse, pretty)
- struct type *type;
- char *valaddr;
- CORE_ADDR address;
- FILE *stream;
- char format;
- int deref_ref;
- int recurse;
- enum val_prettyprint pretty;
+longest_to_int (LONGEST arg)
{
- register unsigned int i;
- int len, n_baseclasses;
- struct type *elttype;
- int eltlen;
- LONGEST val;
- unsigned char c;
-
- if (pretty == Val_pretty_default)
- {
- pretty = prettyprint ? Val_prettyprint : Val_no_prettyprint;
- }
-
- QUIT;
+ /* Let the compiler do the work */
+ int rtnval = (int) arg;
- if (TYPE_FLAGS (type) & TYPE_FLAG_STUB)
- {
- fprintf_filtered (stream, "<Type not defined in this context>");
- fflush (stream);
- return 0;
- }
-
- switch (TYPE_CODE (type))
+ /* Check for overflows or underflows */
+ if (sizeof (LONGEST) > sizeof (int))
{
- case TYPE_CODE_ARRAY:
- if (TYPE_LENGTH (type) >= 0
- && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
+ if (rtnval != arg)
{
- elttype = TYPE_TARGET_TYPE (type);
- eltlen = TYPE_LENGTH (elttype);
- len = TYPE_LENGTH (type) / eltlen;
- fprintf_filtered (stream, "{");
- /* For an array of chars, print with string syntax. */
- if (eltlen == 1 && TYPE_CODE (elttype) == TYPE_CODE_INT
- && format == 0)
- print_string (stream, valaddr, len, 0);
- else
- {
- unsigned int things_printed = 0;
-
- for (i = 0; i < len && things_printed < print_max; i++)
- {
- /* Position of the array element we are examining to see
- whether it is repeated. */
- unsigned int rep1;
- /* Number of repititions we have detected so far. */
- unsigned int reps;
-
- if (i > 0)
- fprintf_filtered (stream, ", ");
-
- rep1 = i + 1;
- reps = 1;
- while (rep1 < len
- && !bcmp (valaddr + i * eltlen,
- valaddr + rep1 * eltlen, eltlen))
- {
- ++reps;
- ++rep1;
- }
-
- if (reps > REPEAT_COUNT_THRESHOLD)
- {
- val_print (elttype, valaddr + i * eltlen,
- 0, stream, format, deref_ref,
- recurse + 1, pretty);
- fprintf_filtered (stream, " <repeats %u times>", reps);
- i = rep1 - 1;
- things_printed += REPEAT_COUNT_THRESHOLD;
- }
- else
- {
- val_print (elttype, valaddr + i * eltlen,
- 0, stream, format, deref_ref,
- recurse + 1, pretty);
- things_printed++;
- }
- }
- if (i < len)
- fprintf_filtered (stream, "...");
- }
- fprintf_filtered (stream, "}");
- break;
+ error (_("Value out of range."));
}
- /* Array of unspecified length: treat like pointer to first elt. */
- valaddr = (char *) &address;
+ }
+ return (rtnval);
+}
- case TYPE_CODE_PTR:
- if (format)
+/* Print a floating point value of type TYPE (not always a
+ TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
+
+void
+print_floating (const gdb_byte *valaddr, struct type *type,
+ struct ui_file *stream)
+{
+ DOUBLEST doub;
+ int inv;
+ const struct floatformat *fmt = NULL;
+ unsigned len = TYPE_LENGTH (type);
+ enum float_kind kind;
+
+ /* If it is a floating-point, check for obvious problems. */
+ if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ fmt = floatformat_from_type (type);
+ if (fmt != NULL)
+ {
+ kind = floatformat_classify (fmt, valaddr);
+ if (kind == float_nan)
{
- print_scalar_formatted (valaddr, type, format, 0, stream);
- break;
+ if (floatformat_is_negative (fmt, valaddr))
+ fprintf_filtered (stream, "-");
+ fprintf_filtered (stream, "nan(");
+ fputs_filtered ("0x", stream);
+ fputs_filtered (floatformat_mantissa (fmt, valaddr), stream);
+ fprintf_filtered (stream, ")");
+ return;
}
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD)
+ else if (kind == float_infinite)
{
- struct type *domain = TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type));
- struct type *target = TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (type));
- struct fn_field *f;
- int j, len2;
- char *kind = "";
-
- val = unpack_long (builtin_type_int, valaddr);
- if (val < 128)
- {
- len = TYPE_NFN_FIELDS (domain);
- for (i = 0; i < len; i++)
- {
- f = TYPE_FN_FIELDLIST1 (domain, i);
- len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
-
- for (j = 0; j < len2; j++)
- {
- QUIT;
- if (TYPE_FN_FIELD_VOFFSET (f, j) == val)
- {
- kind = "virtual";
- goto common;
- }
- }
- }
- }
- else
- {
- struct symbol *sym = find_pc_function ((CORE_ADDR) val);
- if (sym == 0)
- error ("invalid pointer to member function");
- len = TYPE_NFN_FIELDS (domain);
- for (i = 0; i < len; i++)
- {
- f = TYPE_FN_FIELDLIST1 (domain, i);
- len2 = TYPE_FN_FIELDLIST_LENGTH (domain, i);
-
- for (j = 0; j < len2; j++)
- {
- QUIT;
- if (!strcmp (SYMBOL_NAME (sym), TYPE_FN_FIELD_PHYSNAME (f, j)))
- goto common;
- }
- }
- }
- common:
- if (i < len)
- {
- fprintf_filtered (stream, "&");
- type_print_varspec_prefix (TYPE_FN_FIELD_TYPE (f, j), stream, 0, 0);
- fprintf (stream, kind);
- if (TYPE_FN_FIELD_PHYSNAME (f, j)[0] == '_'
- && TYPE_FN_FIELD_PHYSNAME (f, j)[1] == '$')
- type_print_method_args
- (TYPE_FN_FIELD_ARGS (f, j) + 1, "~",
- TYPE_FN_FIELDLIST_NAME (domain, i), 0, stream);
- else
- type_print_method_args
- (TYPE_FN_FIELD_ARGS (f, j), "",
- TYPE_FN_FIELDLIST_NAME (domain, i), 0, stream);
- break;
- }
- fprintf_filtered (stream, "(");
- type_print (type, "", stream, -1);
- fprintf_filtered (stream, ") %d", (int) val >> 3);
+ if (floatformat_is_negative (fmt, valaddr))
+ fputs_filtered ("-", stream);
+ fputs_filtered ("inf", stream);
+ return;
}
- else if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_MEMBER)
+ }
+
+ /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
+ isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
+ needs to be used as that takes care of any necessary type
+ conversions. Such conversions are of course direct to DOUBLEST
+ and disregard any possible target floating point limitations.
+ For instance, a u64 would be converted and displayed exactly on a
+ host with 80 bit DOUBLEST but with loss of information on a host
+ with 64 bit DOUBLEST. */
+
+ doub = unpack_double (type, valaddr, &inv);
+ if (inv)
+ {
+ fprintf_filtered (stream, "<invalid float value>");
+ return;
+ }
+
+ /* FIXME: kettenis/2001-01-20: The following code makes too much
+ assumptions about the host and target floating point format. */
+
+ /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
+ not necessarily be a TYPE_CODE_FLT, the below ignores that and
+ instead uses the type's length to determine the precision of the
+ floating-point value being printed. */
+
+ if (len < sizeof (double))
+ fprintf_filtered (stream, "%.9g", (double) doub);
+ else if (len == sizeof (double))
+ fprintf_filtered (stream, "%.17g", (double) doub);
+ else
+#ifdef PRINTF_HAS_LONG_DOUBLE
+ fprintf_filtered (stream, "%.35Lg", doub);
+#else
+ /* This at least wins with values that are representable as
+ doubles. */
+ fprintf_filtered (stream, "%.17g", (double) doub);
+#endif
+}
+
+void
+print_decimal_floating (const gdb_byte *valaddr, struct type *type,
+ struct ui_file *stream)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
+ char decstr[MAX_DECIMAL_STRING];
+ unsigned len = TYPE_LENGTH (type);
+
+ decimal_to_string (valaddr, len, byte_order, decstr);
+ fputs_filtered (decstr, stream);
+ return;
+}
+
+void
+print_binary_chars (struct ui_file *stream, const gdb_byte *valaddr,
+ unsigned len, enum bfd_endian byte_order)
+{
+
+#define BITS_IN_BYTES 8
+
+ const gdb_byte *p;
+ unsigned int i;
+ int b;
+
+ /* Declared "int" so it will be signed.
+ * This ensures that right shift will shift in zeros.
+ */
+ const int mask = 0x080;
+
+ /* FIXME: We should be not printing leading zeroes in most cases. */
+
+ if (byte_order == BFD_ENDIAN_BIG)
+ {
+ for (p = valaddr;
+ p < valaddr + len;
+ p++)
{
- struct type *domain = TYPE_DOMAIN_TYPE (TYPE_TARGET_TYPE (type));
- struct type *target = TYPE_TARGET_TYPE (TYPE_TARGET_TYPE (type));
- char *kind = "";
-
- /* VAL is a byte offset into the structure type DOMAIN.
- Find the name of the field for that offset and
- print it. */
- int extra = 0;
- int bits = 0;
- len = TYPE_NFIELDS (domain);
- /* @@ Make VAL into bit offset */
- val = unpack_long (builtin_type_int, valaddr) << 3;
- for (i = 0; i < len; i++)
- {
- int bitpos = TYPE_FIELD_BITPOS (domain, i);
- QUIT;
- if (val == bitpos)
- break;
- if (val < bitpos && i > 0)
- {
- int ptrsize = (TYPE_LENGTH (builtin_type_char) * TYPE_LENGTH (target));
- /* Somehow pointing into a field. */
- i -= 1;
- extra = (val - TYPE_FIELD_BITPOS (domain, i));
- if (extra & 0x3)
- bits = 1;
- else
- extra >>= 3;
- break;
- }
- }
- if (i < len)
+ /* Every byte has 8 binary characters; peel off
+ * and print from the MSB end.
+ */
+ for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
{
- fprintf_filtered (stream, "&");
- type_print_base (domain, stream, 0, 0);
- fprintf_filtered (stream, "::");
- fputs_filtered (TYPE_FIELD_NAME (domain, i), stream);
- if (extra)
- fprintf_filtered (stream, " + %d bytes", extra);
- if (bits)
- fprintf_filtered (stream, " (offset in bits)");
- break;
+ if (*p & (mask >> i))
+ b = 1;
+ else
+ b = 0;
+
+ fprintf_filtered (stream, "%1d", b);
}
- fprintf_filtered (stream, "%d", val >> 3);
}
- else
+ }
+ else
+ {
+ for (p = valaddr + len - 1;
+ p >= valaddr;
+ p--)
{
- fprintf_filtered (stream, "0x%x", * (int *) valaddr);
- /* For a pointer to char or unsigned char,
- also print the string pointed to, unless pointer is null. */
-
- /* For an array of chars, print with string syntax. */
- elttype = TYPE_TARGET_TYPE (type);
- i = 0; /* Number of characters printed. */
- if (TYPE_LENGTH (elttype) == 1
- && TYPE_CODE (elttype) == TYPE_CODE_INT
- && format == 0
- && unpack_long (type, valaddr) != 0
- /* If print_max is UINT_MAX, the alloca below will fail.
- In that case don't try to print the string. */
- && print_max < UINT_MAX)
+ for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
{
- fprintf_filtered (stream, " ");
-
- /* Get first character. */
- if (read_memory ( (CORE_ADDR) unpack_long (type, valaddr),
- &c, 1))
- {
- /* First address out of bounds. */
- fprintf_filtered (stream, "<Address 0x%x out of bounds>",
- (* (int *) valaddr));
- break;
- }
+ if (*p & (mask >> i))
+ b = 1;
else
- {
- /* A real string. */
- int out_of_bounds = 0;
- char *string = (char *) alloca (print_max);
-
- /* If the loop ends by us hitting print_max characters,
- we need to have elipses at the end. */
- int force_ellipses = 1;
-
- /* This loop only fetches print_max characters, even
- though print_string might want to print more
- (with repeated characters). This is so that
- we don't spend forever fetching if we print
- a long string consisting of the same character
- repeated. */
- while (i < print_max)
- {
- QUIT;
- if (read_memory ((CORE_ADDR) unpack_long (type, valaddr)
- + i, &c, 1))
- {
- out_of_bounds = 1;
- force_ellipses = 0;
- break;
- }
- else if (c == '\0')
- {
- force_ellipses = 0;
- break;
- }
- else
- string[i++] = c;
- }
-
- if (i != 0)
- print_string (stream, string, i, force_ellipses);
- if (out_of_bounds)
- fprintf_filtered (stream,
- " <Address 0x%x out of bounds>",
- (*(int *) valaddr) + i);
- }
+ b = 0;
- fflush (stream);
+ fprintf_filtered (stream, "%1d", b);
}
- /* Return number of characters printed, plus one for the
- terminating null if we have "reached the end". */
- return i + (print_max && i != print_max);
}
- break;
+ }
+}
- case TYPE_CODE_MEMBER:
- error ("not implemented: member type in val_print");
- break;
+/* VALADDR points to an integer of LEN bytes.
+ * Print it in octal on stream or format it in buf.
+ */
+void
+print_octal_chars (struct ui_file *stream, const gdb_byte *valaddr,
+ unsigned len, enum bfd_endian byte_order)
+{
+ const gdb_byte *p;
+ unsigned char octa1, octa2, octa3, carry;
+ int cycle;
+
+ /* FIXME: We should be not printing leading zeroes in most cases. */
+
+
+ /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
+ * the extra bits, which cycle every three bytes:
+ *
+ * Byte side: 0 1 2 3
+ * | | | |
+ * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
+ *
+ * Octal side: 0 1 carry 3 4 carry ...
+ *
+ * Cycle number: 0 1 2
+ *
+ * But of course we are printing from the high side, so we have to
+ * figure out where in the cycle we are so that we end up with no
+ * left over bits at the end.
+ */
+#define BITS_IN_OCTAL 3
+#define HIGH_ZERO 0340
+#define LOW_ZERO 0016
+#define CARRY_ZERO 0003
+#define HIGH_ONE 0200
+#define MID_ONE 0160
+#define LOW_ONE 0016
+#define CARRY_ONE 0001
+#define HIGH_TWO 0300
+#define MID_TWO 0070
+#define LOW_TWO 0007
+
+ /* For 32 we start in cycle 2, with two bits and one bit carry;
+ * for 64 in cycle in cycle 1, with one bit and a two bit carry.
+ */
+ cycle = (len * BITS_IN_BYTES) % BITS_IN_OCTAL;
+ carry = 0;
- case TYPE_CODE_REF:
- fprintf_filtered (stream, "(0x%x &) = ", * (int *) valaddr);
- /* De-reference the reference. */
- if (deref_ref)
+ fputs_filtered ("0", stream);
+ if (byte_order == BFD_ENDIAN_BIG)
+ {
+ for (p = valaddr;
+ p < valaddr + len;
+ p++)
{
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
+ switch (cycle)
{
- value val = value_at (TYPE_TARGET_TYPE (type), * (int *) valaddr);
- val_print (VALUE_TYPE (val), VALUE_CONTENTS (val),
- VALUE_ADDRESS (val), stream, format,
- deref_ref, recurse + 1, pretty);
+ case 0:
+ /* No carry in, carry out two bits.
+ */
+ octa1 = (HIGH_ZERO & *p) >> 5;
+ octa2 = (LOW_ZERO & *p) >> 2;
+ carry = (CARRY_ZERO & *p);
+ fprintf_filtered (stream, "%o", octa1);
+ fprintf_filtered (stream, "%o", octa2);
+ break;
+
+ case 1:
+ /* Carry in two bits, carry out one bit.
+ */
+ octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
+ octa2 = (MID_ONE & *p) >> 4;
+ octa3 = (LOW_ONE & *p) >> 1;
+ carry = (CARRY_ONE & *p);
+ fprintf_filtered (stream, "%o", octa1);
+ fprintf_filtered (stream, "%o", octa2);
+ fprintf_filtered (stream, "%o", octa3);
+ break;
+
+ case 2:
+ /* Carry in one bit, no carry out.
+ */
+ octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
+ octa2 = (MID_TWO & *p) >> 3;
+ octa3 = (LOW_TWO & *p);
+ carry = 0;
+ fprintf_filtered (stream, "%o", octa1);
+ fprintf_filtered (stream, "%o", octa2);
+ fprintf_filtered (stream, "%o", octa3);
+ break;
+
+ default:
+ error (_("Internal error in octal conversion;"));
}
- else
- fprintf_filtered (stream, "???");
- }
- break;
- case TYPE_CODE_UNION:
- if (recurse && !unionprint)
- {
- fprintf_filtered (stream, "{...}");
- break;
+ cycle++;
+ cycle = cycle % BITS_IN_OCTAL;
}
- /* Fall through. */
- case TYPE_CODE_STRUCT:
- fprintf_filtered (stream, "{");
- len = TYPE_NFIELDS (type);
- n_baseclasses = TYPE_N_BASECLASSES (type);
- for (i = 1; i <= n_baseclasses; i++)
- {
- fprintf_filtered (stream, "\n");
- if (pretty)
- print_spaces_filtered (2 + 2 * recurse, stream);
- fputs_filtered ("<", stream);
- fputs_filtered (TYPE_NAME (TYPE_BASECLASS (type, i)), stream);
- fputs_filtered ("> = ", stream);
- val_print (TYPE_FIELD_TYPE (type, 0),
- valaddr + TYPE_FIELD_BITPOS (type, i-1) / 8,
- 0, stream, 0, 0, recurse + 1, pretty);
- }
- if (i > 1) {
- fprintf_filtered (stream, "\n");
- print_spaces_filtered (2 + 2 * recurse, stream);
- fputs_filtered ("members of ", stream);
- fputs_filtered (TYPE_NAME (type), stream);
- fputs_filtered (": ", stream);
- }
- if (!len && i == 1)
- fprintf_filtered (stream, "<No data fields>");
- else
+ }
+ else
+ {
+ for (p = valaddr + len - 1;
+ p >= valaddr;
+ p--)
{
- for (i -= 1; i < len; i++)
- {
- if (i > n_baseclasses) fprintf_filtered (stream, ", ");
- if (pretty)
- {
- fprintf_filtered (stream, "\n");
- print_spaces_filtered (2 + 2 * recurse, stream);
- }
- fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
- fputs_filtered (" = ", stream);
- /* check if static field */
- if (TYPE_FIELD_STATIC (type, i))
- {
- value v;
-
- v = value_static_field (type, TYPE_FIELD_NAME (type, i), i);
- val_print (TYPE_FIELD_TYPE (type, i),
- VALUE_CONTENTS (v), 0, stream, format,
- deref_ref, recurse + 1, pretty);
- }
- else if (TYPE_FIELD_PACKED (type, i))
- {
- char *valp = (char *) & val;
- union {int i; char c;} test;
- test.i = 1;
- if (test.c != 1)
- valp += sizeof val - TYPE_LENGTH (TYPE_FIELD_TYPE (type, i));
- val = unpack_field_as_long (type, valaddr, i);
- val_print (TYPE_FIELD_TYPE (type, i), valp, 0,
- stream, format, deref_ref, recurse + 1, pretty);
- }
- else
- {
- val_print (TYPE_FIELD_TYPE (type, i),
- valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
- 0, stream, format, deref_ref,
- recurse + 1, pretty);
- }
- }
- if (pretty)
+ switch (cycle)
{
- fprintf_filtered (stream, "\n");
- print_spaces_filtered (2 * recurse, stream);
+ case 0:
+ /* Carry out, no carry in */
+ octa1 = (HIGH_ZERO & *p) >> 5;
+ octa2 = (LOW_ZERO & *p) >> 2;
+ carry = (CARRY_ZERO & *p);
+ fprintf_filtered (stream, "%o", octa1);
+ fprintf_filtered (stream, "%o", octa2);
+ break;
+
+ case 1:
+ /* Carry in, carry out */
+ octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
+ octa2 = (MID_ONE & *p) >> 4;
+ octa3 = (LOW_ONE & *p) >> 1;
+ carry = (CARRY_ONE & *p);
+ fprintf_filtered (stream, "%o", octa1);
+ fprintf_filtered (stream, "%o", octa2);
+ fprintf_filtered (stream, "%o", octa3);
+ break;
+
+ case 2:
+ /* Carry in, no carry out */
+ octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
+ octa2 = (MID_TWO & *p) >> 3;
+ octa3 = (LOW_TWO & *p);
+ carry = 0;
+ fprintf_filtered (stream, "%o", octa1);
+ fprintf_filtered (stream, "%o", octa2);
+ fprintf_filtered (stream, "%o", octa3);
+ break;
+
+ default:
+ error (_("Internal error in octal conversion;"));
}
- }
- fprintf_filtered (stream, "}");
- break;
- case TYPE_CODE_ENUM:
- if (format)
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- break;
+ cycle++;
+ cycle = cycle % BITS_IN_OCTAL;
}
- len = TYPE_NFIELDS (type);
- val = unpack_long (builtin_type_int, valaddr);
- for (i = 0; i < len; i++)
- {
- QUIT;
- if (val == TYPE_FIELD_BITPOS (type, i))
- break;
- }
- if (i < len)
- fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
- else
- fprintf_filtered (stream, "%d", (int) val);
- break;
+ }
- case TYPE_CODE_FUNC:
- if (format)
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- break;
- }
- fprintf_filtered (stream, "{");
- type_print (type, "", stream, -1);
- fprintf_filtered (stream, "} ");
- fprintf_filtered (stream, "0x%x", address);
- break;
+}
- case TYPE_CODE_INT:
- if (format)
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- break;
- }
-#ifdef PRINT_TYPELESS_INTEGER
- PRINT_TYPELESS_INTEGER (stream, type, unpack_long (type, valaddr));
-#else
-#ifndef LONG_LONG
- fprintf_filtered (stream,
- TYPE_UNSIGNED (type) ? "%u" : "%d",
- unpack_long (type, valaddr));
-#else
- fprintf_filtered (stream,
- TYPE_UNSIGNED (type) ? "%llu" : "%lld",
- unpack_long (type, valaddr));
-#endif
-#endif
-
- if (TYPE_LENGTH (type) == 1)
+/* VALADDR points to an integer of LEN bytes.
+ * Print it in decimal on stream or format it in buf.
+ */
+void
+print_decimal_chars (struct ui_file *stream, const gdb_byte *valaddr,
+ unsigned len, enum bfd_endian byte_order)
+{
+#define TEN 10
+#define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
+#define CARRY_LEFT( x ) ((x) % TEN)
+#define SHIFT( x ) ((x) << 4)
+#define LOW_NIBBLE( x ) ( (x) & 0x00F)
+#define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
+
+ const gdb_byte *p;
+ unsigned char *digits;
+ int carry;
+ int decimal_len;
+ int i, j, decimal_digits;
+ int dummy;
+ int flip;
+
+ /* Base-ten number is less than twice as many digits
+ * as the base 16 number, which is 2 digits per byte.
+ */
+ decimal_len = len * 2 * 2;
+ digits = xmalloc (decimal_len);
+
+ for (i = 0; i < decimal_len; i++)
+ {
+ digits[i] = 0;
+ }
+
+ /* Ok, we have an unknown number of bytes of data to be printed in
+ * decimal.
+ *
+ * Given a hex number (in nibbles) as XYZ, we start by taking X and
+ * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
+ * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
+ *
+ * The trick is that "digits" holds a base-10 number, but sometimes
+ * the individual digits are > 10.
+ *
+ * Outer loop is per nibble (hex digit) of input, from MSD end to
+ * LSD end.
+ */
+ decimal_digits = 0; /* Number of decimal digits so far */
+ p = (byte_order == BFD_ENDIAN_BIG) ? valaddr : valaddr + len - 1;
+ flip = 0;
+ while ((byte_order == BFD_ENDIAN_BIG) ? (p < valaddr + len) : (p >= valaddr))
+ {
+ /*
+ * Multiply current base-ten number by 16 in place.
+ * Each digit was between 0 and 9, now is between
+ * 0 and 144.
+ */
+ for (j = 0; j < decimal_digits; j++)
{
- fprintf_filtered (stream, " '");
- printchar ((unsigned char) unpack_long (type, valaddr),
- stream, '\'');
- fprintf_filtered (stream, "'");
+ digits[j] = SHIFT (digits[j]);
}
- break;
- case TYPE_CODE_FLT:
- if (format)
+ /* Take the next nibble off the input and add it to what
+ * we've got in the LSB position. Bottom 'digit' is now
+ * between 0 and 159.
+ *
+ * "flip" is used to run this loop twice for each byte.
+ */
+ if (flip == 0)
{
- print_scalar_formatted (valaddr, type, format, 0, stream);
- break;
+ /* Take top nibble.
+ */
+ digits[0] += HIGH_NIBBLE (*p);
+ flip = 1;
}
-#ifdef IEEE_FLOAT
- if (is_nan ((char *) valaddr, TYPE_LENGTH (type)))
+ else
{
- fprintf_filtered (stream, "NaN");
- break;
+ /* Take low nibble and bump our pointer "p".
+ */
+ digits[0] += LOW_NIBBLE (*p);
+ if (byte_order == BFD_ENDIAN_BIG)
+ p++;
+ else
+ p--;
+ flip = 0;
}
-#endif
- {
- double doub;
- int inv;
-
- doub = unpack_double (type, valaddr, &inv);
- if (inv)
- fprintf_filtered (stream, "Invalid float value");
- else
- fprintf_filtered (stream,
- TYPE_LENGTH (type) <= 4? "%.6g": "%.16g", doub);
- }
- break;
-
- case TYPE_CODE_VOID:
- fprintf_filtered (stream, "void");
- break;
-
- default:
- error ("Invalid type code in symbol table.");
- }
- fflush (stream);
- return 0;
-}
-\f
-#ifdef IEEE_FLOAT
-/* Nonzero if ARG (a double) is a NAN. */
+ /* Re-decimalize. We have to do this often enough
+ * that we don't overflow, but once per nibble is
+ * overkill. Easier this way, though. Note that the
+ * carry is often larger than 10 (e.g. max initial
+ * carry out of lowest nibble is 15, could bubble all
+ * the way up greater than 10). So we have to do
+ * the carrying beyond the last current digit.
+ */
+ carry = 0;
+ for (j = 0; j < decimal_len - 1; j++)
+ {
+ digits[j] += carry;
-int
-is_nan (fp, len)
- char *fp;
- int len;
-{
- int lowhalf, highhalf;
- union ieee
- {
- long i[2]; /* ASSUMED 32 BITS */
- float f; /* ASSUMED 32 BITS */
- double d; /* ASSUMED 64 BITS */
- } *arg;
+ /* "/" won't handle an unsigned char with
+ * a value that if signed would be negative.
+ * So extend to longword int via "dummy".
+ */
+ dummy = digits[j];
+ carry = CARRY_OUT (dummy);
+ digits[j] = CARRY_LEFT (dummy);
- arg = (union ieee *)fp;
+ if (j >= decimal_digits && carry == 0)
+ {
+ /*
+ * All higher digits are 0 and we
+ * no longer have a carry.
+ *
+ * Note: "j" is 0-based, "decimal_digits" is
+ * 1-based.
+ */
+ decimal_digits = j + 1;
+ break;
+ }
+ }
+ }
- /*
- * Single precision float.
+ /* Ok, now "digits" is the decimal representation, with
+ * the "decimal_digits" actual digits. Print!
*/
- if (len == sizeof(long))
+ for (i = decimal_digits - 1; i >= 0; i--)
{
- highhalf = arg->i[0];
- return ((((highhalf >> 23) & 0xFF) == 0xFF)
- && 0 != (highhalf & 0x7FFFFF));
+ fprintf_filtered (stream, "%1d", digits[i]);
}
-
- /* Separate the high and low words of the double.
- Distinguish big and little-endian machines. */
-#ifdef WORDS_BIG_ENDIAN
- lowhalf = arg->i[1], highhalf = arg->i[0];
-#else
- lowhalf = arg->i[0], highhalf = arg->i[1];
-#endif
-
- /* Nan: exponent is the maximum possible, and fraction is nonzero. */
- return (((highhalf>>20) & 0x7ff) == 0x7ff
- && ! ((highhalf & 0xfffff == 0) && (lowhalf == 0)));
-}
-#endif
-\f
-/* Print a description of a type TYPE
- in the form of a declaration of a variable named VARSTRING.
- Output goes to STREAM (via stdio).
- If SHOW is positive, we show the contents of the outermost level
- of structure even if there is a type name that could be used instead.
- If SHOW is negative, we never show the details of elements' types. */
-
-void
-type_print (type, varstring, stream, show)
- struct type *type;
- char *varstring;
- FILE *stream;
- int show;
-{
- type_print_1 (type, varstring, stream, show, 0);
+ xfree (digits);
}
-/* LEVEL is the depth to indent lines by. */
+/* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
void
-type_print_1 (type, varstring, stream, show, level)
- struct type *type;
- char *varstring;
- FILE *stream;
- int show;
- int level;
+print_hex_chars (struct ui_file *stream, const gdb_byte *valaddr,
+ unsigned len, enum bfd_endian byte_order)
{
- register enum type_code code;
- type_print_base (type, stream, show, level);
- code = TYPE_CODE (type);
- if ((varstring && *varstring)
- ||
- /* Need a space if going to print stars or brackets;
- but not if we will print just a type name. */
- ((show > 0 || TYPE_NAME (type) == 0)
- &&
- (code == TYPE_CODE_PTR || code == TYPE_CODE_FUNC
- || code == TYPE_CODE_METHOD
- || code == TYPE_CODE_ARRAY
- || code == TYPE_CODE_MEMBER
- || code == TYPE_CODE_REF)))
- fprintf_filtered (stream, " ");
- type_print_varspec_prefix (type, stream, show, 0);
- fputs_filtered (varstring, stream);
- type_print_varspec_suffix (type, stream, show, 0);
-}
+ const gdb_byte *p;
-/* Print the method arguments ARGS to the file STREAM. */
-static void
-type_print_method_args (args, prefix, varstring, staticp, stream)
- struct type **args;
- char *prefix, *varstring;
- int staticp;
- FILE *stream;
-{
- int i;
+ /* FIXME: We should be not printing leading zeroes in most cases. */
- fputs_filtered (" ", stream);
- fputs_filtered (prefix, stream);
- fputs_filtered (varstring, stream);
- fputs_filtered (" (", stream);
- if (args && args[!staticp] && args[!staticp]->code != TYPE_CODE_VOID)
+ fputs_filtered ("0x", stream);
+ if (byte_order == BFD_ENDIAN_BIG)
{
- i = !staticp; /* skip the class variable */
- while (1)
+ for (p = valaddr;
+ p < valaddr + len;
+ p++)
{
- type_print (args[i++], "", stream, 0);
- if (!args[i])
- {
- fprintf_filtered (stream, " ...");
- break;
- }
- else if (args[i]->code != TYPE_CODE_VOID)
- {
- fprintf_filtered (stream, ", ");
- }
- else break;
+ fprintf_filtered (stream, "%02x", *p);
+ }
+ }
+ else
+ {
+ for (p = valaddr + len - 1;
+ p >= valaddr;
+ p--)
+ {
+ fprintf_filtered (stream, "%02x", *p);
}
}
- fprintf_filtered (stream, ")");
}
-
-/* If TYPE is a derived type, then print out derivation
- information. Print out all layers of the type heirarchy
- until we encounter one with multiple inheritance.
- At that point, print out that ply, and return. */
-static void
-type_print_derivation_info (stream, type)
- FILE *stream;
- struct type *type;
+
+/* VALADDR points to a char integer of LEN bytes. Print it out in appropriate language form on stream.
+ Omit any leading zero chars. */
+
+void
+print_char_chars (struct ui_file *stream, struct type *type,
+ const gdb_byte *valaddr,
+ unsigned len, enum bfd_endian byte_order)
{
- char *name;
- int i, n_baseclasses = TYPE_N_BASECLASSES (type);
- struct type *basetype = 0;
+ const gdb_byte *p;
- while (type && n_baseclasses == 1)
+ if (byte_order == BFD_ENDIAN_BIG)
{
- basetype = TYPE_BASECLASS (type, 1);
- if (TYPE_NAME (basetype) && (name = TYPE_NAME (basetype)))
+ p = valaddr;
+ while (p < valaddr + len - 1 && *p == 0)
+ ++p;
+
+ while (p < valaddr + len)
{
- while (*name != ' ') name++;
- fprintf_filtered (stream, ": %s%s ",
- TYPE_VIA_PUBLIC (basetype) ? "public" : "private",
- TYPE_VIA_VIRTUAL (basetype) ? " virtual" : "");
- fputs_filtered (name + 1, stream);
- fputs_filtered (" ", stream);
+ LA_EMIT_CHAR (*p, type, stream, '\'');
+ ++p;
}
- n_baseclasses = TYPE_N_BASECLASSES (basetype);
- type = basetype;
}
-
- if (type)
+ else
{
- if (n_baseclasses != 0)
- fprintf_filtered (stream, ": ");
- for (i = 1; i <= n_baseclasses; i++)
+ p = valaddr + len - 1;
+ while (p > valaddr && *p == 0)
+ --p;
+
+ while (p >= valaddr)
{
- basetype = TYPE_BASECLASS (type, i);
- if (TYPE_NAME (basetype) && (name = TYPE_NAME (basetype)))
- {
- while (*name != ' ') name++;
- fprintf_filtered (stream, "%s%s ",
- TYPE_VIA_PUBLIC (basetype) ? "public" : "private",
- TYPE_VIA_VIRTUAL (basetype) ? " virtual" : "");
- fputs_filtered (name + 1, stream);
- }
- if (i < n_baseclasses)
- fprintf_filtered (stream, ", ");
+ LA_EMIT_CHAR (*p, type, stream, '\'');
+ --p;
}
- fprintf_filtered (stream, " ");
}
}
-/* Print any asterisks or open-parentheses needed before the
- variable name (to describe its type).
+/* Assuming TYPE is a simple, non-empty array type, compute its upper
+ and lower bound. Save the low bound into LOW_BOUND if not NULL.
+ Save the high bound into HIGH_BOUND if not NULL.
- On outermost call, pass 0 for PASSED_A_PTR.
- On outermost call, SHOW > 0 means should ignore
- any typename for TYPE and show its details.
- SHOW is always zero on recursive calls. */
+ Return 1 if the operation was successful. Return zero otherwise,
+ in which case the values of LOW_BOUND and HIGH_BOUNDS are unmodified.
+
+ We now simply use get_discrete_bounds call to get the values
+ of the low and high bounds.
+ get_discrete_bounds can return three values:
+ 1, meaning that index is a range,
+ 0, meaning that index is a discrete type,
+ or -1 for failure. */
-static void
-type_print_varspec_prefix (type, stream, show, passed_a_ptr)
- struct type *type;
- FILE *stream;
- int show;
- int passed_a_ptr;
+int
+get_array_bounds (struct type *type, LONGEST *low_bound, LONGEST *high_bound)
{
- if (type == 0)
- return;
-
- if (TYPE_NAME (type) && show <= 0)
- return;
+ struct type *index = TYPE_INDEX_TYPE (type);
+ LONGEST low = 0;
+ LONGEST high = 0;
+ int res;
+
+ if (index == NULL)
+ return 0;
- QUIT;
+ res = get_discrete_bounds (index, &low, &high);
+ if (res == -1)
+ return 0;
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_PTR:
- type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1);
- fprintf_filtered (stream, "*");
- break;
+ if (low_bound)
+ *low_bound = low;
- case TYPE_CODE_MEMBER:
- if (passed_a_ptr)
- fprintf_filtered (stream, "(");
- type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0,
- 0);
- fprintf_filtered (stream, " ");
- type_print_base (TYPE_DOMAIN_TYPE (type), stream, 0,
- passed_a_ptr);
- fprintf_filtered (stream, "::");
- break;
+ if (high_bound)
+ *high_bound = high;
- case TYPE_CODE_METHOD:
- if (passed_a_ptr)
- fprintf (stream, "(");
- type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0,
- 0);
- fprintf_filtered (stream, " ");
- type_print_base (TYPE_DOMAIN_TYPE (type), stream, 0,
- passed_a_ptr);
- fprintf_filtered (stream, "::");
- break;
+ return 1;
+}
- case TYPE_CODE_REF:
- type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1);
- fprintf_filtered (stream, "&");
- break;
+/* Print on STREAM using the given OPTIONS the index for the element
+ at INDEX of an array whose index type is INDEX_TYPE. */
+
+void
+maybe_print_array_index (struct type *index_type, LONGEST index,
+ struct ui_file *stream,
+ const struct value_print_options *options)
+{
+ struct value *index_value;
- case TYPE_CODE_FUNC:
- type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0,
- 0);
- if (passed_a_ptr)
- fprintf_filtered (stream, "(");
- break;
+ if (!options->print_array_indexes)
+ return;
+
+ index_value = value_from_longest (index_type, index);
- case TYPE_CODE_ARRAY:
- type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0,
- 0);
- if (passed_a_ptr)
- fprintf_filtered (stream, "(");
- }
+ LA_PRINT_ARRAY_INDEX (index_value, stream, options);
}
-/* Print any array sizes, function arguments or close parentheses
- needed after the variable name (to describe its type).
- Args work like type_print_varspec_prefix. */
+/* Called by various <lang>_val_print routines to print elements of an
+ array in the form "<elem1>, <elem2>, <elem3>, ...".
-static void
-type_print_varspec_suffix (type, stream, show, passed_a_ptr)
- struct type *type;
- FILE *stream;
- int show;
- int passed_a_ptr;
-{
- if (type == 0)
- return;
+ (FIXME?) Assumes array element separator is a comma, which is correct
+ for all languages currently handled.
+ (FIXME?) Some languages have a notation for repeated array elements,
+ perhaps we should try to use that notation when appropriate.
+ */
- if (TYPE_NAME (type) && show <= 0)
- return;
+void
+val_print_array_elements (struct type *type, const gdb_byte *valaddr,
+ CORE_ADDR address, struct ui_file *stream,
+ int recurse,
+ const struct value *val,
+ const struct value_print_options *options,
+ unsigned int i)
+{
+ unsigned int things_printed = 0;
+ unsigned len;
+ struct type *elttype, *index_type;
+ unsigned eltlen;
+ /* Position of the array element we are examining to see
+ whether it is repeated. */
+ unsigned int rep1;
+ /* Number of repetitions we have detected so far. */
+ unsigned int reps;
+ LONGEST low_bound_index = 0;
+
+ elttype = TYPE_TARGET_TYPE (type);
+ eltlen = TYPE_LENGTH (check_typedef (elttype));
+ index_type = TYPE_INDEX_TYPE (type);
+
+ /* Compute the number of elements in the array. On most arrays,
+ the size of its elements is not zero, and so the number of elements
+ is simply the size of the array divided by the size of the elements.
+ But for arrays of elements whose size is zero, we need to look at
+ the bounds. */
+ if (eltlen != 0)
+ len = TYPE_LENGTH (type) / eltlen;
+ else
+ {
+ LONGEST low, hi;
- QUIT;
+ if (get_array_bounds (type, &low, &hi))
+ len = hi - low + 1;
+ else
+ {
+ warning (_("unable to get bounds of array, assuming null array"));
+ len = 0;
+ }
+ }
- switch (TYPE_CODE (type))
+ /* Get the array low bound. This only makes sense if the array
+ has one or more element in it. */
+ if (len > 0 && !get_array_bounds (type, &low_bound_index, NULL))
{
- case TYPE_CODE_ARRAY:
- if (passed_a_ptr)
- fprintf_filtered (stream, ")");
-
- fprintf_filtered (stream, "[");
- if (TYPE_LENGTH (type) >= 0
- && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
- fprintf_filtered (stream, "%d",
- (TYPE_LENGTH (type)
- / TYPE_LENGTH (TYPE_TARGET_TYPE (type))));
- fprintf_filtered (stream, "]");
-
- type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0,
- 0);
- break;
+ warning (_("unable to get low bound of array, using zero as default"));
+ low_bound_index = 0;
+ }
- case TYPE_CODE_MEMBER:
- if (passed_a_ptr)
- fprintf_filtered (stream, ")");
- type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0);
- break;
+ annotate_array_section_begin (i, elttype);
- case TYPE_CODE_METHOD:
- if (passed_a_ptr)
- fprintf_filtered (stream, ")");
- type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 0);
- if (passed_a_ptr)
+ for (; i < len && things_printed < options->print_max; i++)
+ {
+ if (i != 0)
{
- int i;
- struct type **args = TYPE_ARG_TYPES (type);
-
- fprintf_filtered (stream, "(");
- if (args[1] == 0)
- fprintf_filtered (stream, "...");
- else for (i = 1; args[i] != 0 && args[i]->code != TYPE_CODE_VOID; i++)
+ if (options->prettyprint_arrays)
{
- type_print_1 (args[i], "", stream, -1, 0);
- if (args[i+1] == 0)
- fprintf_filtered (stream, "...");
- else if (args[i+1]->code != TYPE_CODE_VOID)
- fprintf_filtered (stream, ",");
+ fprintf_filtered (stream, ",\n");
+ print_spaces_filtered (2 + 2 * recurse, stream);
+ }
+ else
+ {
+ fprintf_filtered (stream, ", ");
}
- fprintf_filtered (stream, ")");
}
- break;
+ wrap_here (n_spaces (2 + 2 * recurse));
+ maybe_print_array_index (index_type, i + low_bound_index,
+ stream, options);
- case TYPE_CODE_PTR:
- case TYPE_CODE_REF:
- type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0, 1);
- break;
+ rep1 = i + 1;
+ reps = 1;
+ while ((rep1 < len) &&
+ !memcmp (valaddr + i * eltlen, valaddr + rep1 * eltlen, eltlen))
+ {
+ ++reps;
+ ++rep1;
+ }
- case TYPE_CODE_FUNC:
- type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0,
- passed_a_ptr);
- if (passed_a_ptr)
- fprintf_filtered (stream, ")");
- fprintf_filtered (stream, "()");
- break;
+ if (reps > options->repeat_count_threshold)
+ {
+ val_print (elttype, valaddr + i * eltlen, 0, address + i * eltlen,
+ stream, recurse + 1, val, options, current_language);
+ annotate_elt_rep (reps);
+ fprintf_filtered (stream, " <repeats %u times>", reps);
+ annotate_elt_rep_end ();
+
+ i = rep1 - 1;
+ things_printed += options->repeat_count_threshold;
+ }
+ else
+ {
+ val_print (elttype, valaddr + i * eltlen, 0, address + i * eltlen,
+ stream, recurse + 1, val, options, current_language);
+ annotate_elt ();
+ things_printed++;
+ }
+ }
+ annotate_array_section_end ();
+ if (i < len)
+ {
+ fprintf_filtered (stream, "...");
}
}
-/* Print the name of the type (or the ultimate pointer target,
- function value or array element), or the description of a
- structure or union.
+/* Read LEN bytes of target memory at address MEMADDR, placing the
+ results in GDB's memory at MYADDR. Returns a count of the bytes
+ actually read, and optionally an errno value in the location
+ pointed to by ERRNOPTR if ERRNOPTR is non-null. */
- SHOW nonzero means don't print this type as just its name;
- show its real definition even if it has a name.
- SHOW zero means print just typename or struct tag if there is one
- SHOW negative means abbreviate structure elements.
- SHOW is decremented for printing of structure elements.
+/* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
+ function be eliminated. */
- LEVEL is the depth to indent by.
- We increase it for some recursive calls. */
-
-static void
-type_print_base (type, stream, show, level)
- struct type *type;
- FILE *stream;
- int show;
- int level;
+static int
+partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int *errnoptr)
{
- char *name;
- register int i;
- register int len;
- register int lastval;
-
- QUIT;
+ int nread; /* Number of bytes actually read. */
+ int errcode; /* Error from last read. */
- if (type == 0)
+ /* First try a complete read. */
+ errcode = target_read_memory (memaddr, myaddr, len);
+ if (errcode == 0)
{
- fprintf_filtered (stream, "type unknown");
- return;
+ /* Got it all. */
+ nread = len;
}
-
- if (TYPE_NAME (type) && show <= 0)
+ else
{
- fputs_filtered (TYPE_NAME (type), stream);
- return;
+ /* Loop, reading one byte at a time until we get as much as we can. */
+ for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
+ {
+ errcode = target_read_memory (memaddr++, myaddr++, 1);
+ }
+ /* If an error, the last read was unsuccessful, so adjust count. */
+ if (errcode != 0)
+ {
+ nread--;
+ }
}
+ if (errnoptr != NULL)
+ {
+ *errnoptr = errcode;
+ }
+ return (nread);
+}
- switch (TYPE_CODE (type))
+/* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
+ each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
+ allocated buffer containing the string, which the caller is responsible to
+ free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
+ success, or errno on failure.
+
+ If LEN > 0, reads exactly LEN characters (including eventual NULs in
+ the middle or end of the string). If LEN is -1, stops at the first
+ null character (not necessarily the first null byte) up to a maximum
+ of FETCHLIMIT characters. Set FETCHLIMIT to UINT_MAX to read as many
+ characters as possible from the string.
+
+ Unless an exception is thrown, BUFFER will always be allocated, even on
+ failure. In this case, some characters might have been read before the
+ failure happened. Check BYTES_READ to recognize this situation.
+
+ Note: There was a FIXME asking to make this code use target_read_string,
+ but this function is more general (can read past null characters, up to
+ given LEN). Besides, it is used much more often than target_read_string
+ so it is more tested. Perhaps callers of target_read_string should use
+ this function instead? */
+
+int
+read_string (CORE_ADDR addr, int len, int width, unsigned int fetchlimit,
+ enum bfd_endian byte_order, gdb_byte **buffer, int *bytes_read)
+{
+ int found_nul; /* Non-zero if we found the nul char. */
+ int errcode; /* Errno returned from bad reads. */
+ unsigned int nfetch; /* Chars to fetch / chars fetched. */
+ unsigned int chunksize; /* Size of each fetch, in chars. */
+ gdb_byte *bufptr; /* Pointer to next available byte in buffer. */
+ gdb_byte *limit; /* First location past end of fetch buffer. */
+ struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
+
+ /* Decide how large of chunks to try to read in one operation. This
+ is also pretty simple. If LEN >= zero, then we want fetchlimit chars,
+ so we might as well read them all in one operation. If LEN is -1, we
+ are looking for a NUL terminator to end the fetching, so we might as
+ well read in blocks that are large enough to be efficient, but not so
+ large as to be slow if fetchlimit happens to be large. So we choose the
+ minimum of 8 and fetchlimit. We used to use 200 instead of 8 but
+ 200 is way too big for remote debugging over a serial line. */
+
+ chunksize = (len == -1 ? min (8, fetchlimit) : fetchlimit);
+
+ /* Loop until we either have all the characters, or we encounter
+ some error, such as bumping into the end of the address space. */
+
+ found_nul = 0;
+ *buffer = NULL;
+
+ old_chain = make_cleanup (free_current_contents, buffer);
+
+ if (len > 0)
{
- case TYPE_CODE_ARRAY:
- case TYPE_CODE_PTR:
- case TYPE_CODE_MEMBER:
- case TYPE_CODE_REF:
- case TYPE_CODE_FUNC:
- case TYPE_CODE_METHOD:
- type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
- break;
+ *buffer = (gdb_byte *) xmalloc (len * width);
+ bufptr = *buffer;
- case TYPE_CODE_STRUCT:
- fprintf_filtered (stream, "struct ");
- goto struct_union;
+ nfetch = partial_memory_read (addr, bufptr, len * width, &errcode)
+ / width;
+ addr += nfetch * width;
+ bufptr += nfetch * width;
+ }
+ else if (len == -1)
+ {
+ unsigned long bufsize = 0;
- case TYPE_CODE_UNION:
- fprintf_filtered (stream, "union ");
- struct_union:
- if (TYPE_NAME (type) && (name = TYPE_NAME (type)))
- {
- while (*name != ' ') name++;
- fputs_filtered (name + 1, stream);
- fputs_filtered (" ", stream);
- }
- if (show < 0)
- fprintf_filtered (stream, "{...}");
- else
+ do
{
- int i;
-
- type_print_derivation_info (stream, type);
-
- fprintf_filtered (stream, "{");
- len = TYPE_NFIELDS (type);
- if (len)
- fprintf_filtered (stream, "\n");
+ QUIT;
+ nfetch = min (chunksize, fetchlimit - bufsize);
+
+ if (*buffer == NULL)
+ *buffer = (gdb_byte *) xmalloc (nfetch * width);
else
- {
- if (TYPE_FLAGS (type) & TYPE_FLAG_STUB)
- fprintf_filtered (stream, "<incomplete type>\n");
- else
- fprintf_filtered (stream, "<no data fields>\n");
- }
+ *buffer = (gdb_byte *) xrealloc (*buffer,
+ (nfetch + bufsize) * width);
- /* If there is a base class for this type,
- do not print the field that it occupies. */
- for (i = TYPE_N_BASECLASSES (type); i < len; i++)
- {
- QUIT;
- /* Don't print out virtual function table. */
- if (! strncmp (TYPE_FIELD_NAME (type, i),
- "_vptr$", 6))
- continue;
-
- print_spaces_filtered (level + 4, stream);
- if (TYPE_FIELD_STATIC (type, i))
- {
- fprintf_filtered (stream, "static ");
- }
- type_print_1 (TYPE_FIELD_TYPE (type, i),
- TYPE_FIELD_NAME (type, i),
- stream, show - 1, level + 4);
- if (!TYPE_FIELD_STATIC (type, i)
- && TYPE_FIELD_PACKED (type, i))
- {
- /* It is a bitfield. This code does not attempt
- to look at the bitpos and reconstruct filler,
- unnamed fields. This would lead to misleading
- results if the compiler does not put out fields
- for such things (I don't know what it does). */
- fprintf_filtered (stream, " : %d",
- TYPE_FIELD_BITSIZE (type, i));
- }
- fprintf_filtered (stream, ";\n");
- }
+ bufptr = *buffer + bufsize * width;
+ bufsize += nfetch;
+
+ /* Read as much as we can. */
+ nfetch = partial_memory_read (addr, bufptr, nfetch * width, &errcode)
+ / width;
- /* C++: print out the methods */
- len = TYPE_NFN_FIELDS (type);
- if (len) fprintf_filtered (stream, "\n");
- for (i = 0; i < len; i++)
+ /* Scan this chunk for the null character that terminates the string
+ to print. If found, we don't need to fetch any more. Note
+ that bufptr is explicitly left pointing at the next character
+ after the null character, or at the next character after the end
+ of the buffer. */
+
+ limit = bufptr + nfetch * width;
+ while (bufptr < limit)
{
- struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
- int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
+ unsigned long c;
- for (j = 0; j < len2; j++)
+ c = extract_unsigned_integer (bufptr, width, byte_order);
+ addr += width;
+ bufptr += width;
+ if (c == 0)
{
- QUIT;
- print_spaces_filtered (level + 4, stream);
- if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
- fprintf_filtered (stream, "virtual ");
- else if (TYPE_FN_FIELD_STATIC_P (f, j))
- fprintf_filtered (stream, "static ");
- type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)), "", stream, 0);
- if (TYPE_FN_FIELD_PHYSNAME (f, j)[0] == '_'
- && TYPE_FN_FIELD_PHYSNAME (f, j)[1] == '$')
- type_print_method_args
- (TYPE_FN_FIELD_ARGS (f, j) + 1, "~",
- TYPE_FN_FIELDLIST_NAME (type, i), 0, stream);
- else
- type_print_method_args
- (TYPE_FN_FIELD_ARGS (f, j), "",
- TYPE_FN_FIELDLIST_NAME (type, i),
- TYPE_FN_FIELD_STATIC_P (f, j), stream);
-
- fprintf_filtered (stream, ";\n");
+ /* We don't care about any error which happened after
+ the NUL terminator. */
+ errcode = 0;
+ found_nul = 1;
+ break;
}
- if (len2) fprintf_filtered (stream, "\n");
}
-
- print_spaces_filtered (level, stream);
- fprintf_filtered (stream, "}");
}
- break;
+ while (errcode == 0 /* no error */
+ && bufptr - *buffer < fetchlimit * width /* no overrun */
+ && !found_nul); /* haven't found NUL yet */
+ }
+ else
+ { /* Length of string is really 0! */
+ /* We always allocate *buffer. */
+ *buffer = bufptr = xmalloc (1);
+ errcode = 0;
+ }
+
+ /* bufptr and addr now point immediately beyond the last byte which we
+ consider part of the string (including a '\0' which ends the string). */
+ *bytes_read = bufptr - *buffer;
+
+ QUIT;
+
+ discard_cleanups (old_chain);
+
+ return errcode;
+}
+
+/* Print a string from the inferior, starting at ADDR and printing up to LEN
+ characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
+ stops at the first null byte, otherwise printing proceeds (including null
+ bytes) until either print_max or LEN characters have been printed,
+ whichever is smaller. */
+
+int
+val_print_string (struct type *elttype, CORE_ADDR addr, int len,
+ struct ui_file *stream,
+ const struct value_print_options *options)
+{
+ int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */
+ int errcode; /* Errno returned from bad reads. */
+ int found_nul; /* Non-zero if we found the nul char */
+ unsigned int fetchlimit; /* Maximum number of chars to print. */
+ int bytes_read;
+ gdb_byte *buffer = NULL; /* Dynamically growable fetch buffer. */
+ struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
+ struct gdbarch *gdbarch = get_type_arch (elttype);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int width = TYPE_LENGTH (elttype);
+
+ /* First we need to figure out the limit on the number of characters we are
+ going to attempt to fetch and print. This is actually pretty simple. If
+ LEN >= zero, then the limit is the minimum of LEN and print_max. If
+ LEN is -1, then the limit is print_max. This is true regardless of
+ whether print_max is zero, UINT_MAX (unlimited), or something in between,
+ because finding the null byte (or available memory) is what actually
+ limits the fetch. */
+
+ fetchlimit = (len == -1 ? options->print_max : min (len, options->print_max));
+
+ errcode = read_string (addr, len, width, fetchlimit, byte_order,
+ &buffer, &bytes_read);
+ old_chain = make_cleanup (xfree, buffer);
+
+ addr += bytes_read;
+
+ /* We now have either successfully filled the buffer to fetchlimit, or
+ terminated early due to an error or finding a null char when LEN is -1. */
+
+ /* Determine found_nul by looking at the last character read. */
+ found_nul = extract_unsigned_integer (buffer + bytes_read - width, width,
+ byte_order) == 0;
+ if (len == -1 && !found_nul)
+ {
+ gdb_byte *peekbuf;
+
+ /* We didn't find a NUL terminator we were looking for. Attempt
+ to peek at the next character. If not successful, or it is not
+ a null byte, then force ellipsis to be printed. */
+
+ peekbuf = (gdb_byte *) alloca (width);
- case TYPE_CODE_ENUM:
- fprintf_filtered (stream, "enum ");
- if (TYPE_NAME (type))
+ if (target_read_memory (addr, peekbuf, width) == 0
+ && extract_unsigned_integer (peekbuf, width, byte_order) != 0)
+ force_ellipsis = 1;
+ }
+ else if ((len >= 0 && errcode != 0) || (len > bytes_read / width))
+ {
+ /* Getting an error when we have a requested length, or fetching less
+ than the number of characters actually requested, always make us
+ print ellipsis. */
+ force_ellipsis = 1;
+ }
+
+ /* If we get an error before fetching anything, don't print a string.
+ But if we fetch something and then get an error, print the string
+ and then the error message. */
+ if (errcode == 0 || bytes_read > 0)
+ {
+ if (options->addressprint)
{
- name = TYPE_NAME (type);
- while (*name != ' ') name++;
- fputs_filtered (name + 1, stream);
fputs_filtered (" ", stream);
}
- if (show < 0)
- fprintf_filtered (stream, "{...}");
+ LA_PRINT_STRING (stream, elttype, buffer, bytes_read / width,
+ NULL, force_ellipsis, options);
+ }
+
+ if (errcode != 0)
+ {
+ if (errcode == EIO)
+ {
+ fprintf_filtered (stream, " <Address ");
+ fputs_filtered (paddress (gdbarch, addr), stream);
+ fprintf_filtered (stream, " out of bounds>");
+ }
else
{
- fprintf_filtered (stream, "{");
- len = TYPE_NFIELDS (type);
- lastval = 0;
- for (i = 0; i < len; i++)
- {
- QUIT;
- if (i) fprintf_filtered (stream, ", ");
- fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
- if (lastval != TYPE_FIELD_BITPOS (type, i))
- {
- fprintf_filtered (stream, " : %d", TYPE_FIELD_BITPOS (type, i));
- lastval = TYPE_FIELD_BITPOS (type, i);
- }
- lastval++;
- }
- fprintf_filtered (stream, "}");
+ fprintf_filtered (stream, " <Error reading address ");
+ fputs_filtered (paddress (gdbarch, addr), stream);
+ fprintf_filtered (stream, ": %s>", safe_strerror (errcode));
}
- break;
+ }
- case TYPE_CODE_INT:
- if (TYPE_UNSIGNED (type))
- name = unsigned_type_table[TYPE_LENGTH (type)];
- else
- name = signed_type_table[TYPE_LENGTH (type)];
- fputs_filtered (name, stream);
- break;
+ gdb_flush (stream);
+ do_cleanups (old_chain);
- case TYPE_CODE_FLT:
- name = float_type_table[TYPE_LENGTH (type)];
- fputs_filtered (name, stream);
- break;
+ return (bytes_read / width);
+}
+\f
- case TYPE_CODE_VOID:
- fprintf_filtered (stream, "void");
- break;
+/* The 'set input-radix' command writes to this auxiliary variable.
+ If the requested radix is valid, INPUT_RADIX is updated; otherwise,
+ it is left unchanged. */
- case 0:
- fprintf_filtered (stream, "struct unknown");
- break;
+static unsigned input_radix_1 = 10;
+
+/* Validate an input or output radix setting, and make sure the user
+ knows what they really did here. Radix setting is confusing, e.g.
+ setting the input radix to "10" never changes it! */
- default:
- error ("Invalid type code in symbol table.");
- }
-}
-\f
static void
-set_maximum_command (arg)
- char *arg;
+set_input_radix (char *args, int from_tty, struct cmd_list_element *c)
{
- if (!arg) error_no_arg ("value for maximum elements to print");
- print_max = parse_and_eval_address (arg);
- if (print_max == 0)
- print_max = UINT_MAX;
+ set_input_radix_1 (from_tty, input_radix_1);
}
static void
-set_prettyprint_command (arg, from_tty)
- char *arg;
- int from_tty;
+set_input_radix_1 (int from_tty, unsigned radix)
{
- prettyprint = parse_binary_operation ("set prettyprint", arg);
+ /* We don't currently disallow any input radix except 0 or 1, which don't
+ make any mathematical sense. In theory, we can deal with any input
+ radix greater than 1, even if we don't have unique digits for every
+ value from 0 to radix-1, but in practice we lose on large radix values.
+ We should either fix the lossage or restrict the radix range more.
+ (FIXME). */
+
+ if (radix < 2)
+ {
+ input_radix_1 = input_radix;
+ error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
+ radix);
+ }
+ input_radix_1 = input_radix = radix;
+ if (from_tty)
+ {
+ printf_filtered (_("Input radix now set to decimal %u, hex %x, octal %o.\n"),
+ radix, radix, radix);
+ }
}
+/* The 'set output-radix' command writes to this auxiliary variable.
+ If the requested radix is valid, OUTPUT_RADIX is updated,
+ otherwise, it is left unchanged. */
+
+static unsigned output_radix_1 = 10;
+
static void
-set_unionprint_command (arg, from_tty)
- char *arg;
- int from_tty;
+set_output_radix (char *args, int from_tty, struct cmd_list_element *c)
{
- unionprint = parse_binary_operation ("set unionprint", arg);
+ set_output_radix_1 (from_tty, output_radix_1);
}
-format_info (arg, from_tty)
- char *arg;
- int from_tty;
+static void
+set_output_radix_1 (int from_tty, unsigned radix)
{
- if (arg)
- error ("\"info format\" does not take any arguments.");
- printf ("Prettyprinting of structures is %s.\n",
- prettyprint ? "on" : "off");
- printf ("Printing of unions interior to structures is %s.\n",
- unionprint ? "on" : "off");
- if (print_max == UINT_MAX)
- printf_filtered
- ("There is no maximum number of array elements printed.\n");
- else
- printf_filtered
- ("The maximum number of array elements printed is %d.\n", print_max);
+ /* Validate the radix and disallow ones that we aren't prepared to
+ handle correctly, leaving the radix unchanged. */
+ switch (radix)
+ {
+ case 16:
+ user_print_options.output_format = 'x'; /* hex */
+ break;
+ case 10:
+ user_print_options.output_format = 0; /* decimal */
+ break;
+ case 8:
+ user_print_options.output_format = 'o'; /* octal */
+ break;
+ default:
+ output_radix_1 = output_radix;
+ error (_("Unsupported output radix ``decimal %u''; output radix unchanged."),
+ radix);
+ }
+ output_radix_1 = output_radix = radix;
+ if (from_tty)
+ {
+ printf_filtered (_("Output radix now set to decimal %u, hex %x, octal %o.\n"),
+ radix, radix, radix);
+ }
}
-extern struct cmd_list_element *setlist;
-
-void
-_initialize_valprint ()
-{
- add_cmd ("array-max", class_vars, set_maximum_command,
- "Set NUMBER as limit on string chars or array elements to print.\n\
-\"set array-max 0\" causes there to be no limit.",
- &setlist);
-
- add_cmd ("prettyprint", class_support, set_prettyprint_command,
- "Turn prettyprinting of structures on and off.",
- &setlist);
- add_alias_cmd ("pp", "prettyprint", class_support, 1, &setlist);
-
- add_cmd ("unionprint", class_support, set_unionprint_command,
- "Turn printing of unions interior to structures on and off.",
- &setlist);
+/* Set both the input and output radix at once. Try to set the output radix
+ first, since it has the most restrictive range. An radix that is valid as
+ an output radix is also valid as an input radix.
- add_info ("format", format_info,
- "Show current settings of data formatting options.");
+ It may be useful to have an unusual input radix. If the user wishes to
+ set an input radix that is not valid as an output radix, he needs to use
+ the 'set input-radix' command. */
- /* Give people the defaults which they are used to. */
- prettyprint = 0;
- unionprint = 1;
+static void
+set_radix (char *arg, int from_tty)
+{
+ unsigned radix;
- print_max = 200;
+ radix = (arg == NULL) ? 10 : parse_and_eval_long (arg);
+ set_output_radix_1 (0, radix);
+ set_input_radix_1 (0, radix);
+ if (from_tty)
+ {
+ printf_filtered (_("Input and output radices now set to decimal %u, hex %x, octal %o.\n"),
+ radix, radix, radix);
+ }
+}
- unsigned_type_table
- = (char **) xmalloc ((1 + sizeof (unsigned LONGEST)) * sizeof (char *));
- bzero (unsigned_type_table, (1 + sizeof (unsigned LONGEST)));
- unsigned_type_table[sizeof (unsigned char)] = "unsigned char";
- unsigned_type_table[sizeof (unsigned short)] = "unsigned short";
- unsigned_type_table[sizeof (unsigned long)] = "unsigned long";
- unsigned_type_table[sizeof (unsigned int)] = "unsigned int";
-#ifdef LONG_LONG
- unsigned_type_table[sizeof (unsigned long long)] = "unsigned long long";
-#endif
+/* Show both the input and output radices. */
- signed_type_table
- = (char **) xmalloc ((1 + sizeof (LONGEST)) * sizeof (char *));
- bzero (signed_type_table, (1 + sizeof (LONGEST)));
- signed_type_table[sizeof (char)] = "char";
- signed_type_table[sizeof (short)] = "short";
- signed_type_table[sizeof (long)] = "long";
- signed_type_table[sizeof (int)] = "int";
-#ifdef LONG_LONG
- signed_type_table[sizeof (long long)] = "long long";
-#endif
+static void
+show_radix (char *arg, int from_tty)
+{
+ if (from_tty)
+ {
+ if (input_radix == output_radix)
+ {
+ printf_filtered (_("Input and output radices set to decimal %u, hex %x, octal %o.\n"),
+ input_radix, input_radix, input_radix);
+ }
+ else
+ {
+ printf_filtered (_("Input radix set to decimal %u, hex %x, octal %o.\n"),
+ input_radix, input_radix, input_radix);
+ printf_filtered (_("Output radix set to decimal %u, hex %x, octal %o.\n"),
+ output_radix, output_radix, output_radix);
+ }
+ }
+}
+\f
- float_type_table
- = (char **) xmalloc ((1 + sizeof (double)) * sizeof (char *));
- bzero (float_type_table, (1 + sizeof (double)));
- float_type_table[sizeof (float)] = "float";
- float_type_table[sizeof (double)] = "double";
+static void
+set_print (char *arg, int from_tty)
+{
+ printf_unfiltered (
+ "\"set print\" must be followed by the name of a print subcommand.\n");
+ help_list (setprintlist, "set print ", -1, gdb_stdout);
}
+static void
+show_print (char *args, int from_tty)
+{
+ cmd_show_list (showprintlist, from_tty, "");
+}
+\f
+void
+_initialize_valprint (void)
+{
+ add_prefix_cmd ("print", no_class, set_print,
+ _("Generic command for setting how things print."),
+ &setprintlist, "set print ", 0, &setlist);
+ add_alias_cmd ("p", "print", no_class, 1, &setlist);
+ /* prefer set print to set prompt */
+ add_alias_cmd ("pr", "print", no_class, 1, &setlist);
+
+ add_prefix_cmd ("print", no_class, show_print,
+ _("Generic command for showing print settings."),
+ &showprintlist, "show print ", 0, &showlist);
+ add_alias_cmd ("p", "print", no_class, 1, &showlist);
+ add_alias_cmd ("pr", "print", no_class, 1, &showlist);
+
+ add_setshow_uinteger_cmd ("elements", no_class,
+ &user_print_options.print_max, _("\
+Set limit on string chars or array elements to print."), _("\
+Show limit on string chars or array elements to print."), _("\
+\"set print elements 0\" causes there to be no limit."),
+ NULL,
+ show_print_max,
+ &setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("null-stop", no_class,
+ &user_print_options.stop_print_at_null, _("\
+Set printing of char arrays to stop at first null char."), _("\
+Show printing of char arrays to stop at first null char."), NULL,
+ NULL,
+ show_stop_print_at_null,
+ &setprintlist, &showprintlist);
+
+ add_setshow_uinteger_cmd ("repeats", no_class,
+ &user_print_options.repeat_count_threshold, _("\
+Set threshold for repeated print elements."), _("\
+Show threshold for repeated print elements."), _("\
+\"set print repeats 0\" causes all elements to be individually printed."),
+ NULL,
+ show_repeat_count_threshold,
+ &setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("pretty", class_support,
+ &user_print_options.prettyprint_structs, _("\
+Set prettyprinting of structures."), _("\
+Show prettyprinting of structures."), NULL,
+ NULL,
+ show_prettyprint_structs,
+ &setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("union", class_support,
+ &user_print_options.unionprint, _("\
+Set printing of unions interior to structures."), _("\
+Show printing of unions interior to structures."), NULL,
+ NULL,
+ show_unionprint,
+ &setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("array", class_support,
+ &user_print_options.prettyprint_arrays, _("\
+Set prettyprinting of arrays."), _("\
+Show prettyprinting of arrays."), NULL,
+ NULL,
+ show_prettyprint_arrays,
+ &setprintlist, &showprintlist);
+
+ add_setshow_boolean_cmd ("address", class_support,
+ &user_print_options.addressprint, _("\
+Set printing of addresses."), _("\
+Show printing of addresses."), NULL,
+ NULL,
+ show_addressprint,
+ &setprintlist, &showprintlist);
+
+ add_setshow_zuinteger_cmd ("input-radix", class_support, &input_radix_1,
+ _("\
+Set default input radix for entering numbers."), _("\
+Show default input radix for entering numbers."), NULL,
+ set_input_radix,
+ show_input_radix,
+ &setlist, &showlist);
+
+ add_setshow_zuinteger_cmd ("output-radix", class_support, &output_radix_1,
+ _("\
+Set default output radix for printing of values."), _("\
+Show default output radix for printing of values."), NULL,
+ set_output_radix,
+ show_output_radix,
+ &setlist, &showlist);
+
+ /* The "set radix" and "show radix" commands are special in that
+ they are like normal set and show commands but allow two normally
+ independent variables to be either set or shown with a single
+ command. So the usual deprecated_add_set_cmd() and [deleted]
+ add_show_from_set() commands aren't really appropriate. */
+ /* FIXME: i18n: With the new add_setshow_integer command, that is no
+ longer true - show can display anything. */
+ add_cmd ("radix", class_support, set_radix, _("\
+Set default input and output number radices.\n\
+Use 'set input-radix' or 'set output-radix' to independently set each.\n\
+Without an argument, sets both radices back to the default value of 10."),
+ &setlist);
+ add_cmd ("radix", class_support, show_radix, _("\
+Show the default input and output number radices.\n\
+Use 'show input-radix' or 'show output-radix' to independently show each."),
+ &showlist);
+
+ add_setshow_boolean_cmd ("array-indexes", class_support,
+ &user_print_options.print_array_indexes, _("\
+Set printing of array indexes."), _("\
+Show printing of array indexes"), NULL, NULL, show_print_array_indexes,
+ &setprintlist, &showprintlist);
+}