| /* Support for printing Ada values for GDB, the GNU debugger. |
| |
| Copyright (C) 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1997, 2001, 2002, |
| 2003, 2004, 2005, 2006, 2007, 2008 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 <ctype.h> |
| #include "defs.h" |
| #include "gdb_string.h" |
| #include "symtab.h" |
| #include "gdbtypes.h" |
| #include "expression.h" |
| #include "value.h" |
| #include "demangle.h" |
| #include "valprint.h" |
| #include "language.h" |
| #include "annotate.h" |
| #include "ada-lang.h" |
| #include "c-lang.h" |
| #include "infcall.h" |
| #include "exceptions.h" |
| #include "objfiles.h" |
| |
| /* Encapsulates arguments to ada_val_print. */ |
| struct ada_val_print_args |
| { |
| struct type *type; |
| const gdb_byte *valaddr0; |
| int embedded_offset; |
| CORE_ADDR address; |
| struct ui_file *stream; |
| int recurse; |
| const struct value_print_options *options; |
| }; |
| |
| static void print_record (struct type *, const gdb_byte *, struct ui_file *, |
| int, const struct value_print_options *); |
| |
| static int print_field_values (struct type *, const gdb_byte *, |
| struct ui_file *, int, |
| const struct value_print_options *, |
| int, struct type *, |
| const gdb_byte *); |
| |
| static void adjust_type_signedness (struct type *); |
| |
| static int ada_val_print_stub (void *args0); |
| |
| static int ada_val_print_1 (struct type *, const gdb_byte *, int, CORE_ADDR, |
| struct ui_file *, int, |
| const struct value_print_options *); |
| |
| |
| /* Make TYPE unsigned if its range of values includes no negatives. */ |
| static void |
| adjust_type_signedness (struct type *type) |
| { |
| if (type != NULL && TYPE_CODE (type) == TYPE_CODE_RANGE |
| && TYPE_LOW_BOUND (type) >= 0) |
| TYPE_UNSIGNED (type) = 1; |
| } |
| |
| /* Assuming TYPE is a simple array type, prints its lower bound on STREAM, |
| if non-standard (i.e., other than 1 for numbers, other than lower bound |
| of index type for enumerated type). Returns 1 if something printed, |
| otherwise 0. */ |
| |
| static int |
| print_optional_low_bound (struct ui_file *stream, struct type *type, |
| const struct value_print_options *options) |
| { |
| struct type *index_type; |
| long low_bound; |
| long high_bound; |
| |
| if (options->print_array_indexes) |
| return 0; |
| |
| if (!get_array_bounds (type, &low_bound, &high_bound)) |
| return 0; |
| |
| /* If this is an empty array, then don't print the lower bound. |
| That would be confusing, because we would print the lower bound, |
| followed by... nothing! */ |
| if (low_bound > high_bound) |
| return 0; |
| |
| index_type = TYPE_INDEX_TYPE (type); |
| |
| if (TYPE_CODE (index_type) == TYPE_CODE_RANGE) |
| { |
| /* We need to know what the base type is, in order to do the |
| appropriate check below. Otherwise, if this is a subrange |
| of an enumerated type, where the underlying value of the |
| first element is typically 0, we might test the low bound |
| against the wrong value. */ |
| index_type = TYPE_TARGET_TYPE (index_type); |
| } |
| |
| switch (TYPE_CODE (index_type)) |
| { |
| case TYPE_CODE_BOOL: |
| if (low_bound == 0) |
| return 0; |
| break; |
| case TYPE_CODE_ENUM: |
| if (low_bound == TYPE_FIELD_BITPOS (index_type, 0)) |
| return 0; |
| break; |
| case TYPE_CODE_UNDEF: |
| index_type = builtin_type_int32; |
| /* FALL THROUGH */ |
| default: |
| if (low_bound == 1) |
| return 0; |
| break; |
| } |
| |
| ada_print_scalar (index_type, (LONGEST) low_bound, stream); |
| fprintf_filtered (stream, " => "); |
| return 1; |
| } |
| |
| /* Version of val_print_array_elements for GNAT-style packed arrays. |
| Prints elements of packed array of type TYPE at bit offset |
| BITOFFSET from VALADDR on STREAM. Formats according to OPTIONS and |
| separates with commas. RECURSE is the recursion (nesting) level. |
| TYPE must have been decoded (as by ada_coerce_to_simple_array). */ |
| |
| static void |
| val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, |
| int bitoffset, struct ui_file *stream, |
| int recurse, |
| const struct value_print_options *options) |
| { |
| unsigned int i; |
| unsigned int things_printed = 0; |
| unsigned len; |
| struct type *elttype, *index_type; |
| unsigned eltlen; |
| unsigned long bitsize = TYPE_FIELD_BITSIZE (type, 0); |
| struct value *mark = value_mark (); |
| LONGEST low = 0; |
| |
| elttype = TYPE_TARGET_TYPE (type); |
| eltlen = TYPE_LENGTH (check_typedef (elttype)); |
| index_type = TYPE_INDEX_TYPE (type); |
| |
| { |
| LONGEST high; |
| if (get_discrete_bounds (TYPE_FIELD_TYPE (type, 0), &low, &high) < 0) |
| len = 1; |
| else |
| len = high - low + 1; |
| } |
| |
| i = 0; |
| annotate_array_section_begin (i, elttype); |
| |
| while (i < len && things_printed < options->print_max) |
| { |
| struct value *v0, *v1; |
| int i0; |
| |
| if (i != 0) |
| { |
| if (options->prettyprint_arrays) |
| { |
| fprintf_filtered (stream, ",\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| else |
| { |
| fprintf_filtered (stream, ", "); |
| } |
| } |
| wrap_here (n_spaces (2 + 2 * recurse)); |
| maybe_print_array_index (index_type, i + low, stream, options); |
| |
| i0 = i; |
| v0 = ada_value_primitive_packed_val (NULL, valaddr, |
| (i0 * bitsize) / HOST_CHAR_BIT, |
| (i0 * bitsize) % HOST_CHAR_BIT, |
| bitsize, elttype); |
| while (1) |
| { |
| i += 1; |
| if (i >= len) |
| break; |
| v1 = ada_value_primitive_packed_val (NULL, valaddr, |
| (i * bitsize) / HOST_CHAR_BIT, |
| (i * bitsize) % HOST_CHAR_BIT, |
| bitsize, elttype); |
| if (memcmp (value_contents (v0), value_contents (v1), eltlen) != 0) |
| break; |
| } |
| |
| if (i - i0 > options->repeat_count_threshold) |
| { |
| struct value_print_options opts = *options; |
| opts.deref_ref = 0; |
| val_print (elttype, value_contents (v0), 0, 0, stream, |
| recurse + 1, &opts, current_language); |
| annotate_elt_rep (i - i0); |
| fprintf_filtered (stream, _(" <repeats %u times>"), i - i0); |
| annotate_elt_rep_end (); |
| |
| } |
| else |
| { |
| int j; |
| struct value_print_options opts = *options; |
| opts.deref_ref = 0; |
| for (j = i0; j < i; j += 1) |
| { |
| if (j > i0) |
| { |
| if (options->prettyprint_arrays) |
| { |
| fprintf_filtered (stream, ",\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| else |
| { |
| fprintf_filtered (stream, ", "); |
| } |
| wrap_here (n_spaces (2 + 2 * recurse)); |
| maybe_print_array_index (index_type, j + low, |
| stream, options); |
| } |
| val_print (elttype, value_contents (v0), 0, 0, stream, |
| recurse + 1, &opts, current_language); |
| annotate_elt (); |
| } |
| } |
| things_printed += i - i0; |
| } |
| annotate_array_section_end (); |
| if (i < len) |
| { |
| fprintf_filtered (stream, "..."); |
| } |
| |
| value_free_to_mark (mark); |
| } |
| |
| static struct type * |
| printable_val_type (struct type *type, const gdb_byte *valaddr) |
| { |
| return ada_to_fixed_type (ada_aligned_type (type), valaddr, 0, NULL, 1); |
| } |
| |
| /* Print the character C on STREAM as part of the contents of a literal |
| string whose delimiter is QUOTER. TYPE_LEN is the length in bytes |
| (1 or 2) of the character. */ |
| |
| void |
| ada_emit_char (int c, struct ui_file *stream, int quoter, int type_len) |
| { |
| if (type_len != 2) |
| type_len = 1; |
| |
| c &= (1 << (type_len * TARGET_CHAR_BIT)) - 1; |
| |
| if (isascii (c) && isprint (c)) |
| { |
| if (c == quoter && c == '"') |
| fprintf_filtered (stream, "\"\""); |
| else |
| fprintf_filtered (stream, "%c", c); |
| } |
| else |
| fprintf_filtered (stream, "[\"%0*x\"]", type_len * 2, c); |
| } |
| |
| /* Character #I of STRING, given that TYPE_LEN is the size in bytes (1 |
| or 2) of a character. */ |
| |
| static int |
| char_at (const gdb_byte *string, int i, int type_len) |
| { |
| if (type_len == 1) |
| return string[i]; |
| else |
| return (int) extract_unsigned_integer (string + 2 * i, 2); |
| } |
| |
| /* Wrapper around memcpy to make it legal argument to ui_file_put */ |
| static void |
| ui_memcpy (void *dest, const char *buffer, long len) |
| { |
| memcpy (dest, buffer, (size_t) len); |
| ((char *) dest)[len] = '\0'; |
| } |
| |
| /* Print a floating-point value of type TYPE, pointed to in GDB by |
| VALADDR, on STREAM. Use Ada formatting conventions: there must be |
| a decimal point, and at least one digit before and after the |
| point. We use GNAT format for NaNs and infinities. */ |
| static void |
| ada_print_floating (const gdb_byte *valaddr, struct type *type, |
| struct ui_file *stream) |
| { |
| char buffer[64]; |
| char *s, *result; |
| int len; |
| struct ui_file *tmp_stream = mem_fileopen (); |
| struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_stream); |
| |
| print_floating (valaddr, type, tmp_stream); |
| ui_file_put (tmp_stream, ui_memcpy, buffer); |
| do_cleanups (cleanups); |
| |
| result = buffer; |
| len = strlen (result); |
| |
| /* Modify for Ada rules. */ |
| |
| s = strstr (result, "inf"); |
| if (s == NULL) |
| s = strstr (result, "Inf"); |
| if (s == NULL) |
| s = strstr (result, "INF"); |
| if (s != NULL) |
| strcpy (s, "Inf"); |
| |
| if (s == NULL) |
| { |
| s = strstr (result, "nan"); |
| if (s == NULL) |
| s = strstr (result, "NaN"); |
| if (s == NULL) |
| s = strstr (result, "Nan"); |
| if (s != NULL) |
| { |
| s[0] = s[2] = 'N'; |
| if (result[0] == '-') |
| result += 1; |
| } |
| } |
| |
| if (s == NULL && strchr (result, '.') == NULL) |
| { |
| s = strchr (result, 'e'); |
| if (s == NULL) |
| fprintf_filtered (stream, "%s.0", result); |
| else |
| fprintf_filtered (stream, "%.*s.0%s", (int) (s-result), result, s); |
| return; |
| } |
| fprintf_filtered (stream, "%s", result); |
| } |
| |
| void |
| ada_printchar (int c, struct ui_file *stream) |
| { |
| fputs_filtered ("'", stream); |
| ada_emit_char (c, stream, '\'', 1); |
| fputs_filtered ("'", stream); |
| } |
| |
| /* [From print_type_scalar in typeprint.c]. Print VAL on STREAM in a |
| form appropriate for TYPE. */ |
| |
| void |
| ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream) |
| { |
| unsigned int i; |
| unsigned len; |
| |
| type = ada_check_typedef (type); |
| |
| switch (TYPE_CODE (type)) |
| { |
| |
| case TYPE_CODE_ENUM: |
| len = TYPE_NFIELDS (type); |
| for (i = 0; i < len; i++) |
| { |
| if (TYPE_FIELD_BITPOS (type, i) == val) |
| { |
| break; |
| } |
| } |
| if (i < len) |
| { |
| fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream); |
| } |
| else |
| { |
| print_longest (stream, 'd', 0, val); |
| } |
| break; |
| |
| case TYPE_CODE_INT: |
| print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0, val); |
| break; |
| |
| case TYPE_CODE_CHAR: |
| LA_PRINT_CHAR ((unsigned char) val, stream); |
| break; |
| |
| case TYPE_CODE_BOOL: |
| fprintf_filtered (stream, val ? "true" : "false"); |
| break; |
| |
| case TYPE_CODE_RANGE: |
| ada_print_scalar (TYPE_TARGET_TYPE (type), val, stream); |
| return; |
| |
| case TYPE_CODE_UNDEF: |
| case TYPE_CODE_PTR: |
| case TYPE_CODE_ARRAY: |
| case TYPE_CODE_STRUCT: |
| case TYPE_CODE_UNION: |
| case TYPE_CODE_FUNC: |
| case TYPE_CODE_FLT: |
| case TYPE_CODE_VOID: |
| case TYPE_CODE_SET: |
| case TYPE_CODE_STRING: |
| case TYPE_CODE_ERROR: |
| case TYPE_CODE_MEMBERPTR: |
| case TYPE_CODE_METHODPTR: |
| case TYPE_CODE_METHOD: |
| case TYPE_CODE_REF: |
| warning (_("internal error: unhandled type in ada_print_scalar")); |
| break; |
| |
| default: |
| error (_("Invalid type code in symbol table.")); |
| } |
| gdb_flush (stream); |
| } |
| |
| /* 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. TYPE_LEN is the length (1 or 2) of the character type. |
| */ |
| |
| static void |
| printstr (struct ui_file *stream, const gdb_byte *string, |
| unsigned int length, int force_ellipses, int type_len, |
| const struct value_print_options *options) |
| { |
| unsigned int i; |
| unsigned int things_printed = 0; |
| int in_quotes = 0; |
| int need_comma = 0; |
| |
| if (length == 0) |
| { |
| fputs_filtered ("\"\"", stream); |
| return; |
| } |
| |
| for (i = 0; i < length && things_printed < options->print_max; i += 1) |
| { |
| /* Position of the character we are examining |
| to see whether it is repeated. */ |
| unsigned int rep1; |
| /* Number of repetitions we have detected so far. */ |
| unsigned int reps; |
| |
| QUIT; |
| |
| if (need_comma) |
| { |
| fputs_filtered (", ", stream); |
| need_comma = 0; |
| } |
| |
| rep1 = i + 1; |
| reps = 1; |
| while (rep1 < length |
| && char_at (string, rep1, type_len) == char_at (string, i, |
| type_len)) |
| { |
| rep1 += 1; |
| reps += 1; |
| } |
| |
| if (reps > options->repeat_count_threshold) |
| { |
| if (in_quotes) |
| { |
| if (options->inspect_it) |
| fputs_filtered ("\\\", ", stream); |
| else |
| fputs_filtered ("\", ", stream); |
| in_quotes = 0; |
| } |
| fputs_filtered ("'", stream); |
| ada_emit_char (char_at (string, i, type_len), stream, '\'', |
| type_len); |
| fputs_filtered ("'", stream); |
| fprintf_filtered (stream, _(" <repeats %u times>"), reps); |
| i = rep1 - 1; |
| things_printed += options->repeat_count_threshold; |
| need_comma = 1; |
| } |
| else |
| { |
| if (!in_quotes) |
| { |
| if (options->inspect_it) |
| fputs_filtered ("\\\"", stream); |
| else |
| fputs_filtered ("\"", stream); |
| in_quotes = 1; |
| } |
| ada_emit_char (char_at (string, i, type_len), stream, '"', |
| type_len); |
| things_printed += 1; |
| } |
| } |
| |
| /* Terminate the quotes if necessary. */ |
| if (in_quotes) |
| { |
| if (options->inspect_it) |
| fputs_filtered ("\\\"", stream); |
| else |
| fputs_filtered ("\"", stream); |
| } |
| |
| if (force_ellipses || i < length) |
| fputs_filtered ("...", stream); |
| } |
| |
| void |
| ada_printstr (struct ui_file *stream, const gdb_byte *string, |
| unsigned int length, int width, int force_ellipses, |
| const struct value_print_options *options) |
| { |
| printstr (stream, string, length, force_ellipses, width, options); |
| } |
| |
| |
| /* Print data of type TYPE located at VALADDR (within GDB), which came from |
| the inferior at address ADDRESS, onto stdio stream STREAM according to |
| OPTIONS. The data at VALADDR is in target byte order. |
| |
| If the data is printed as a string, returns the number of string characters |
| printed. |
| |
| RECURSE indicates the amount of indentation to supply before |
| continuation lines; this amount is roughly twice the value of RECURSE. */ |
| |
| int |
| ada_val_print (struct type *type, const gdb_byte *valaddr0, |
| int embedded_offset, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value_print_options *options) |
| { |
| struct ada_val_print_args args; |
| args.type = type; |
| args.valaddr0 = valaddr0; |
| args.embedded_offset = embedded_offset; |
| args.address = address; |
| args.stream = stream; |
| args.recurse = recurse; |
| args.options = options; |
| |
| return catch_errors (ada_val_print_stub, &args, NULL, RETURN_MASK_ALL); |
| } |
| |
| /* Helper for ada_val_print; used as argument to catch_errors to |
| unmarshal the arguments to ada_val_print_1, which does the work. */ |
| static int |
| ada_val_print_stub (void *args0) |
| { |
| struct ada_val_print_args *argsp = (struct ada_val_print_args *) args0; |
| return ada_val_print_1 (argsp->type, argsp->valaddr0, |
| argsp->embedded_offset, argsp->address, |
| argsp->stream, argsp->recurse, argsp->options); |
| } |
| |
| /* Assuming TYPE is a simple array, print the value of this array located |
| at VALADDR. See ada_val_print for a description of the various |
| parameters of this function; they are identical. The semantics |
| of the return value is also identical to ada_val_print. */ |
| |
| static int |
| ada_val_print_array (struct type *type, const gdb_byte *valaddr, |
| CORE_ADDR address, struct ui_file *stream, int recurse, |
| const struct value_print_options *options) |
| { |
| struct type *elttype = TYPE_TARGET_TYPE (type); |
| unsigned int eltlen; |
| unsigned int len; |
| int result = 0; |
| |
| if (elttype == NULL) |
| eltlen = 0; |
| else |
| eltlen = TYPE_LENGTH (elttype); |
| if (eltlen == 0) |
| len = 0; |
| else |
| len = TYPE_LENGTH (type) / eltlen; |
| |
| /* For an array of chars, print with string syntax. */ |
| if (ada_is_string_type (type) |
| && (options->format == 0 || options->format == 's')) |
| { |
| if (options->prettyprint_arrays) |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| |
| /* If requested, look for the first null char and only print |
| elements up to it. */ |
| if (options->stop_print_at_null) |
| { |
| int temp_len; |
| |
| /* Look for a NULL char. */ |
| for (temp_len = 0; |
| (temp_len < len |
| && temp_len < options->print_max |
| && char_at (valaddr, temp_len, eltlen) != 0); |
| temp_len += 1); |
| len = temp_len; |
| } |
| |
| printstr (stream, valaddr, len, 0, eltlen, options); |
| result = len; |
| } |
| else |
| { |
| fprintf_filtered (stream, "("); |
| print_optional_low_bound (stream, type, options); |
| if (TYPE_FIELD_BITSIZE (type, 0) > 0) |
| val_print_packed_array_elements (type, valaddr, 0, stream, |
| recurse, options); |
| else |
| val_print_array_elements (type, valaddr, address, stream, |
| recurse, options, 0); |
| fprintf_filtered (stream, ")"); |
| } |
| |
| return result; |
| } |
| |
| /* See the comment on ada_val_print. This function differs in that it |
| does not catch evaluation errors (leaving that to ada_val_print). */ |
| |
| static int |
| ada_val_print_1 (struct type *type, const gdb_byte *valaddr0, |
| int embedded_offset, CORE_ADDR address, |
| struct ui_file *stream, int recurse, |
| const struct value_print_options *options) |
| { |
| unsigned int len; |
| int i; |
| struct type *elttype; |
| unsigned int eltlen; |
| LONGEST val; |
| const gdb_byte *valaddr = valaddr0 + embedded_offset; |
| |
| type = ada_check_typedef (type); |
| |
| if (ada_is_array_descriptor_type (type) || ada_is_packed_array_type (type)) |
| { |
| int retn; |
| struct value *mark = value_mark (); |
| struct value *val; |
| val = value_from_contents_and_address (type, valaddr, address); |
| val = ada_coerce_to_simple_array_ptr (val); |
| if (val == NULL) |
| { |
| fprintf_filtered (stream, "(null)"); |
| retn = 0; |
| } |
| else |
| retn = ada_val_print_1 (value_type (val), value_contents (val), 0, |
| VALUE_ADDRESS (val), stream, recurse, options); |
| value_free_to_mark (mark); |
| return retn; |
| } |
| |
| valaddr = ada_aligned_value_addr (type, valaddr); |
| embedded_offset -= valaddr - valaddr0 - embedded_offset; |
| type = printable_val_type (type, valaddr); |
| |
| switch (TYPE_CODE (type)) |
| { |
| default: |
| return c_val_print (type, valaddr0, embedded_offset, address, stream, |
| recurse, options); |
| |
| case TYPE_CODE_PTR: |
| { |
| int ret = c_val_print (type, valaddr0, embedded_offset, address, |
| stream, recurse, options); |
| if (ada_is_tag_type (type)) |
| { |
| struct value *val = |
| value_from_contents_and_address (type, valaddr, address); |
| const char *name = ada_tag_name (val); |
| if (name != NULL) |
| fprintf_filtered (stream, " (%s)", name); |
| return 0; |
| } |
| return ret; |
| } |
| |
| case TYPE_CODE_INT: |
| case TYPE_CODE_RANGE: |
| if (ada_is_fixed_point_type (type)) |
| { |
| LONGEST v = unpack_long (type, valaddr); |
| int len = TYPE_LENGTH (type); |
| |
| fprintf_filtered (stream, len < 4 ? "%.11g" : "%.17g", |
| (double) ada_fixed_to_float (type, v)); |
| return 0; |
| } |
| else if (ada_is_vax_floating_type (type)) |
| { |
| struct value *val = |
| value_from_contents_and_address (type, valaddr, address); |
| struct value *func = ada_vax_float_print_function (type); |
| if (func != 0) |
| { |
| static struct type *parray_of_char = NULL; |
| struct value *printable_val; |
| |
| if (parray_of_char == NULL) |
| parray_of_char = |
| make_pointer_type |
| (create_array_type |
| (NULL, builtin_type_true_char, |
| create_range_type (NULL, builtin_type_int32, 0, 32)), NULL); |
| |
| printable_val = |
| value_ind (value_cast (parray_of_char, |
| call_function_by_hand (func, 1, |
| &val))); |
| |
| fprintf_filtered (stream, "%s", value_contents (printable_val)); |
| return 0; |
| } |
| /* No special printing function. Do as best we can. */ |
| } |
| else if (TYPE_CODE (type) == TYPE_CODE_RANGE) |
| { |
| struct type *target_type = TYPE_TARGET_TYPE (type); |
| if (TYPE_LENGTH (type) != TYPE_LENGTH (target_type)) |
| { |
| /* Obscure case of range type that has different length from |
| its base type. Perform a conversion, or we will get a |
| nonsense value. Actually, we could use the same |
| code regardless of lengths; I'm just avoiding a cast. */ |
| struct value *v = value_cast (target_type, |
| value_from_contents_and_address |
| (type, valaddr, 0)); |
| return ada_val_print_1 (target_type, value_contents (v), 0, 0, |
| stream, recurse + 1, options); |
| } |
| else |
| return ada_val_print_1 (TYPE_TARGET_TYPE (type), |
| valaddr0, embedded_offset, |
| address, stream, recurse, options); |
| } |
| else |
| { |
| int format = (options->format ? options->format |
| : options->output_format); |
| if (format) |
| { |
| struct value_print_options opts = *options; |
| opts.format = format; |
| print_scalar_formatted (valaddr, type, &opts, 0, stream); |
| } |
| else if (ada_is_system_address_type (type) |
| && TYPE_OBJFILE (type) != NULL) |
| { |
| /* FIXME: We want to print System.Address variables using |
| the same format as for any access type. But for some |
| reason GNAT encodes the System.Address type as an int, |
| so we have to work-around this deficiency by handling |
| System.Address values as a special case. |
| |
| We do this only for System.Address types defined in an |
| objfile. For the built-in version of System.Address we |
| have installed the proper type to begin with. */ |
| |
| struct gdbarch *gdbarch = get_objfile_arch (TYPE_OBJFILE (type)); |
| struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; |
| |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") "); |
| fputs_filtered (paddress (extract_typed_address |
| (valaddr, ptr_type)), |
| stream); |
| } |
| else |
| { |
| val_print_type_code_int (type, valaddr, stream); |
| if (ada_is_character_type (type)) |
| { |
| fputs_filtered (" ", stream); |
| ada_printchar ((unsigned char) unpack_long (type, valaddr), |
| stream); |
| } |
| } |
| return 0; |
| } |
| |
| case TYPE_CODE_ENUM: |
| if (options->format) |
| { |
| print_scalar_formatted (valaddr, type, options, 0, stream); |
| break; |
| } |
| len = TYPE_NFIELDS (type); |
| val = unpack_long (type, valaddr); |
| for (i = 0; i < len; i++) |
| { |
| QUIT; |
| if (val == TYPE_FIELD_BITPOS (type, i)) |
| { |
| break; |
| } |
| } |
| if (i < len) |
| { |
| const char *name = ada_enum_name (TYPE_FIELD_NAME (type, i)); |
| if (name[0] == '\'') |
| fprintf_filtered (stream, "%ld %s", (long) val, name); |
| else |
| fputs_filtered (name, stream); |
| } |
| else |
| { |
| print_longest (stream, 'd', 0, val); |
| } |
| break; |
| |
| case TYPE_CODE_FLAGS: |
| if (options->format) |
| print_scalar_formatted (valaddr, type, options, 0, stream); |
| else |
| val_print_type_code_flags (type, valaddr, stream); |
| break; |
| |
| case TYPE_CODE_FLT: |
| if (options->format) |
| return c_val_print (type, valaddr0, embedded_offset, address, stream, |
| recurse, options); |
| else |
| ada_print_floating (valaddr0 + embedded_offset, type, stream); |
| break; |
| |
| case TYPE_CODE_UNION: |
| case TYPE_CODE_STRUCT: |
| if (ada_is_bogus_array_descriptor (type)) |
| { |
| fprintf_filtered (stream, "(...?)"); |
| return 0; |
| } |
| else |
| { |
| print_record (type, valaddr, stream, recurse, options); |
| return 0; |
| } |
| |
| case TYPE_CODE_ARRAY: |
| return ada_val_print_array (type, valaddr, address, stream, |
| recurse, options); |
| |
| case TYPE_CODE_REF: |
| /* For references, the debugger is expected to print the value as |
| an address if DEREF_REF is null. But printing an address in place |
| of the object value would be confusing to an Ada programmer. |
| So, for Ada values, we print the actual dereferenced value |
| regardless. */ |
| elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
| |
| if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF) |
| { |
| LONGEST deref_val_int = (LONGEST) unpack_pointer (type, valaddr); |
| if (deref_val_int != 0) |
| { |
| struct value *deref_val = |
| ada_value_ind (value_from_longest |
| (lookup_pointer_type (elttype), |
| deref_val_int)); |
| val_print (value_type (deref_val), |
| value_contents (deref_val), 0, |
| VALUE_ADDRESS (deref_val), stream, recurse + 1, |
| options, current_language); |
| } |
| else |
| fputs_filtered ("(null)", stream); |
| } |
| else |
| fputs_filtered ("???", stream); |
| |
| break; |
| } |
| gdb_flush (stream); |
| return 0; |
| } |
| |
| static int |
| print_variant_part (struct type *type, int field_num, const gdb_byte *valaddr, |
| struct ui_file *stream, int recurse, |
| const struct value_print_options *options, int comma_needed, |
| struct type *outer_type, const gdb_byte *outer_valaddr) |
| { |
| struct type *var_type = TYPE_FIELD_TYPE (type, field_num); |
| int which = ada_which_variant_applies (var_type, outer_type, outer_valaddr); |
| |
| if (which < 0) |
| return 0; |
| else |
| return print_field_values |
| (TYPE_FIELD_TYPE (var_type, which), |
| valaddr + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT |
| + TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT, |
| stream, recurse, options, |
| comma_needed, outer_type, outer_valaddr); |
| } |
| |
| int |
| ada_value_print (struct value *val0, struct ui_file *stream, |
| const struct value_print_options *options) |
| { |
| const gdb_byte *valaddr = value_contents (val0); |
| CORE_ADDR address = VALUE_ADDRESS (val0) + value_offset (val0); |
| struct type *type = |
| ada_to_fixed_type (value_type (val0), valaddr, address, NULL, 1); |
| struct value *val = |
| value_from_contents_and_address (type, valaddr, address); |
| struct value_print_options opts; |
| |
| /* If it is a pointer, indicate what it points to. */ |
| if (TYPE_CODE (type) == TYPE_CODE_PTR) |
| { |
| /* Hack: don't print (char *) for char strings. Their |
| type is indicated by the quoted string anyway. */ |
| if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) != sizeof (char) |
| || TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_INT |
| || TYPE_UNSIGNED (TYPE_TARGET_TYPE (type))) |
| { |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") "); |
| } |
| } |
| else if (ada_is_array_descriptor_type (type)) |
| { |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") "); |
| } |
| else if (ada_is_bogus_array_descriptor (type)) |
| { |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") (...?)"); |
| return 0; |
| } |
| |
| opts = *options; |
| opts.deref_ref = 1; |
| return (val_print (type, value_contents (val), 0, address, |
| stream, 0, &opts, current_language)); |
| } |
| |
| static void |
| print_record (struct type *type, const gdb_byte *valaddr, |
| struct ui_file *stream, int recurse, |
| const struct value_print_options *options) |
| { |
| type = ada_check_typedef (type); |
| |
| fprintf_filtered (stream, "("); |
| |
| if (print_field_values (type, valaddr, stream, recurse, options, |
| 0, type, valaddr) != 0 && options->pretty) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 * recurse, stream); |
| } |
| |
| fprintf_filtered (stream, ")"); |
| } |
| |
| /* Print out fields of value at VALADDR having structure type TYPE. |
| |
| TYPE, VALADDR, STREAM, RECURSE, and OPTIONS have the |
| same meanings as in ada_print_value and ada_val_print. |
| |
| OUTER_TYPE and OUTER_VALADDR give type and address of enclosing record |
| (used to get discriminant values when printing variant parts). |
| |
| COMMA_NEEDED is 1 if fields have been printed at the current recursion |
| level, so that a comma is needed before any field printed by this |
| call. |
| |
| Returns 1 if COMMA_NEEDED or any fields were printed. */ |
| |
| static int |
| print_field_values (struct type *type, const gdb_byte *valaddr, |
| struct ui_file *stream, int recurse, |
| const struct value_print_options *options, |
| int comma_needed, |
| struct type *outer_type, const gdb_byte *outer_valaddr) |
| { |
| int i, len; |
| |
| len = TYPE_NFIELDS (type); |
| |
| for (i = 0; i < len; i += 1) |
| { |
| if (ada_is_ignored_field (type, i)) |
| continue; |
| |
| if (ada_is_wrapper_field (type, i)) |
| { |
| comma_needed = |
| print_field_values (TYPE_FIELD_TYPE (type, i), |
| valaddr |
| + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT, |
| stream, recurse, options, |
| comma_needed, type, valaddr); |
| continue; |
| } |
| else if (ada_is_variant_part (type, i)) |
| { |
| comma_needed = |
| print_variant_part (type, i, valaddr, |
| stream, recurse, options, comma_needed, |
| outer_type, outer_valaddr); |
| continue; |
| } |
| |
| if (comma_needed) |
| fprintf_filtered (stream, ", "); |
| comma_needed = 1; |
| |
| if (options->pretty) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| else |
| { |
| wrap_here (n_spaces (2 + 2 * recurse)); |
| } |
| if (options->inspect_it) |
| { |
| if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR) |
| fputs_filtered ("\"( ptr \"", stream); |
| else |
| fputs_filtered ("\"( nodef \"", stream); |
| fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), |
| language_cplus, DMGL_NO_OPTS); |
| fputs_filtered ("\" \"", stream); |
| fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i), |
| language_cplus, DMGL_NO_OPTS); |
| fputs_filtered ("\") \"", stream); |
| } |
| else |
| { |
| annotate_field_begin (TYPE_FIELD_TYPE (type, i)); |
| fprintf_filtered (stream, "%.*s", |
| ada_name_prefix_len (TYPE_FIELD_NAME (type, i)), |
| TYPE_FIELD_NAME (type, i)); |
| annotate_field_name_end (); |
| fputs_filtered (" => ", stream); |
| annotate_field_value (); |
| } |
| |
| if (TYPE_FIELD_PACKED (type, i)) |
| { |
| struct value *v; |
| |
| /* Bitfields require special handling, especially due to byte |
| order problems. */ |
| if (TYPE_CPLUS_SPECIFIC (type) != NULL |
| && TYPE_FIELD_IGNORE (type, i)) |
| { |
| fputs_filtered (_("<optimized out or zero length>"), stream); |
| } |
| else |
| { |
| int bit_pos = TYPE_FIELD_BITPOS (type, i); |
| int bit_size = TYPE_FIELD_BITSIZE (type, i); |
| struct value_print_options opts; |
| |
| adjust_type_signedness (TYPE_FIELD_TYPE (type, i)); |
| v = ada_value_primitive_packed_val (NULL, valaddr, |
| bit_pos / HOST_CHAR_BIT, |
| bit_pos % HOST_CHAR_BIT, |
| bit_size, |
| TYPE_FIELD_TYPE (type, i)); |
| opts = *options; |
| opts.deref_ref = 0; |
| val_print (TYPE_FIELD_TYPE (type, i), value_contents (v), 0, 0, |
| stream, recurse + 1, &opts, current_language); |
| } |
| } |
| else |
| { |
| struct value_print_options opts = *options; |
| opts.deref_ref = 0; |
| ada_val_print (TYPE_FIELD_TYPE (type, i), |
| valaddr + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT, |
| 0, 0, stream, recurse + 1, &opts); |
| } |
| annotate_field_end (); |
| } |
| |
| return comma_needed; |
| } |