X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fada-valprint.c;h=c637e7826fe35a21e3fc86512676f599038f8f45;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=f0901a8c137a991d6e57e44b4cae7669d4336116;hpb=f5aa6869dee6874a9d1a3a386b1d5893f0ac46d4;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/ada-valprint.c b/gdb/ada-valprint.c index f0901a8c13..c637e7826f 100644 --- a/gdb/ada-valprint.c +++ b/gdb/ada-valprint.c @@ -1,8 +1,6 @@ /* 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, 2009, 2010, 2011 - Free Software Foundation, Inc. + Copyright (C) 1986-2020 Free Software Foundation, Inc. This file is part of GDB. @@ -21,47 +19,29 @@ #include "defs.h" #include -#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" - -static void print_record (struct type *, const gdb_byte *, int, - struct ui_file *, - int, - const struct value *, - const struct value_print_options *); - -static int print_field_values (struct type *, const gdb_byte *, - int, +#include "target-float.h" +#include "cli/cli-style.h" +#include "gdbarch.h" + +static int print_field_values (struct value *, struct value *, struct ui_file *, int, - const struct value *, const struct value_print_options *, - int, struct type *, int); - -static void adjust_type_signedness (struct type *); + int, const struct language_defn *); -static int ada_val_print_1 (struct type *, const gdb_byte *, int, CORE_ADDR, - struct ui_file *, int, - const struct value *, - 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 + if (type != NULL && type->code () == TYPE_CODE_RANGE && TYPE_LOW_BOUND (type) >= 0) TYPE_UNSIGNED (type) = 1; } @@ -93,7 +73,7 @@ print_optional_low_bound (struct ui_file *stream, struct type *type, index_type = TYPE_INDEX_TYPE (type); - if (TYPE_CODE (index_type) == TYPE_CODE_RANGE) + while (index_type->code () == 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 @@ -103,15 +83,18 @@ print_optional_low_bound (struct ui_file *stream, struct type *type, index_type = TYPE_TARGET_TYPE (index_type); } - switch (TYPE_CODE (index_type)) + /* Don't print the lower bound if it's the default one. */ + switch (index_type->code ()) { case TYPE_CODE_BOOL: + case TYPE_CODE_CHAR: if (low_bound == 0) return 0; break; case TYPE_CODE_ENUM: - if (low_bound == TYPE_FIELD_BITPOS (index_type, 0)) + if (low_bound == 0) return 0; + low_bound = TYPE_FIELD_ENUMVAL (index_type, low_bound); break; case TYPE_CODE_UNDEF: index_type = NULL; @@ -128,30 +111,26 @@ print_optional_low_bound (struct ui_file *stream, struct type *type, } /* 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). */ + Prints elements of packed array of type TYPE 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 offset, - int bitoffset, struct ui_file *stream, + int offset, 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; 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); { @@ -159,10 +138,21 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, if (get_discrete_bounds (index_type, &low, &high) < 0) len = 1; + else if (low > high) + { + /* The array length should normally be HIGH_POS - LOW_POS + 1. + But in Ada we allow LOW_POS to be greater than HIGH_POS for + empty arrays. In that situation, the array length is just zero, + not negative! */ + len = 0; + } else len = high - low + 1; } + if (index_type->code () == TYPE_CODE_RANGE) + index_type = TYPE_TARGET_TYPE (index_type); + i = 0; annotate_array_section_begin (i, elttype); @@ -173,7 +163,7 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, if (i != 0) { - if (options->prettyprint_arrays) + if (options->prettyformat_arrays) { fprintf_filtered (stream, ",\n"); print_spaces_filtered (2 + 2 * recurse, stream); @@ -183,6 +173,11 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, fprintf_filtered (stream, ", "); } } + else if (options->prettyformat_arrays) + { + fprintf_filtered (stream, "\n"); + print_spaces_filtered (2 + 2 * recurse, stream); + } wrap_here (n_spaces (2 + 2 * recurse)); maybe_print_array_index (index_type, i + low, stream, options); @@ -200,9 +195,12 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, (i * bitsize) / HOST_CHAR_BIT, (i * bitsize) % HOST_CHAR_BIT, bitsize, elttype); - if (!value_available_contents_eq (v0, value_embedded_offset (v0), - v1, value_embedded_offset (v1), - eltlen)) + if (TYPE_LENGTH (check_typedef (value_type (v0))) + != TYPE_LENGTH (check_typedef (value_type (v1)))) + break; + if (!value_contents_eq (v0, value_embedded_offset (v0), + v1, value_embedded_offset (v1), + TYPE_LENGTH (check_typedef (value_type (v0))))) break; } @@ -211,11 +209,10 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, struct value_print_options opts = *options; opts.deref_ref = 0; - val_print (elttype, value_contents_for_printing (v0), - value_embedded_offset (v0), 0, stream, - recurse + 1, v0, &opts, current_language); + common_val_print (v0, stream, recurse + 1, &opts, current_language); annotate_elt_rep (i - i0); - fprintf_filtered (stream, _(" "), i - i0); + fprintf_filtered (stream, _(" %p[%p]"), + metadata_style.style ().ptr (), i - i0, nullptr); annotate_elt_rep_end (); } @@ -229,7 +226,7 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, { if (j > i0) { - if (options->prettyprint_arrays) + if (options->prettyformat_arrays) { fprintf_filtered (stream, ",\n"); print_spaces_filtered (2 + 2 * recurse, stream); @@ -242,9 +239,8 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, maybe_print_array_index (index_type, j + low, stream, options); } - val_print (elttype, value_contents_for_printing (v0), - value_embedded_offset (v0), 0, stream, - recurse + 1, v0, &opts, current_language); + common_val_print (v0, stream, recurse + 1, &opts, + current_language); annotate_elt (); } } @@ -259,12 +255,6 @@ val_print_packed_array_elements (struct type *type, const gdb_byte *valaddr, 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 of the character. */ @@ -304,70 +294,58 @@ char_at (const gdb_byte *string, int i, int type_len, type_len, byte_order); } -/* 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. */ + point. We use the 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); + string_file tmp_stream; - print_floating (valaddr, type, tmp_stream); - ui_file_put (tmp_stream, ui_memcpy, buffer); - do_cleanups (cleanups); + print_floating (valaddr, type, &tmp_stream); - result = buffer; - len = strlen (result); + std::string &s = tmp_stream.string (); + size_t skip_count = 0; /* 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"); + size_t pos = s.find ("inf"); + if (pos == std::string::npos) + pos = s.find ("Inf"); + if (pos == std::string::npos) + pos = s.find ("INF"); + if (pos != std::string::npos) + s.replace (pos, 3, "Inf"); - if (s == NULL) + if (pos == std::string::npos) { - s = strstr (result, "nan"); - if (s == NULL) - s = strstr (result, "NaN"); - if (s == NULL) - s = strstr (result, "Nan"); - if (s != NULL) + pos = s.find ("nan"); + if (pos == std::string::npos) + pos = s.find ("NaN"); + if (pos == std::string::npos) + pos = s.find ("Nan"); + if (pos != std::string::npos) { - s[0] = s[2] = 'N'; - if (result[0] == '-') - result += 1; + s[pos] = s[pos + 2] = 'N'; + if (s[0] == '-') + skip_count = 1; } } - if (s == NULL && strchr (result, '.') == NULL) + if (pos == std::string::npos + && s.find ('.') == std::string::npos) { - s = strchr (result, 'e'); - if (s == NULL) - fprintf_filtered (stream, "%s.0", result); + pos = s.find ('e'); + if (pos == std::string::npos) + fprintf_filtered (stream, "%s.0", s.c_str ()); else - fprintf_filtered (stream, "%.*s.0%s", (int) (s-result), result, s); - return; + fprintf_filtered (stream, "%.*s.0%s", (int) pos, s.c_str (), &s[pos]); } - fprintf_filtered (stream, "%s", result); + else + fprintf_filtered (stream, "%s", &s[skip_count]); } void @@ -396,21 +374,22 @@ ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream) type = ada_check_typedef (type); - switch (TYPE_CODE (type)) + switch (type->code ()) { case TYPE_CODE_ENUM: - len = TYPE_NFIELDS (type); + len = type->num_fields (); for (i = 0; i < len; i++) { - if (TYPE_FIELD_BITPOS (type, i) == val) + if (TYPE_FIELD_ENUMVAL (type, i) == val) { break; } } if (i < len) { - fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream); + fputs_styled (ada_enum_name (TYPE_FIELD_NAME (type, i)), + variable_name_style.style (), stream); } else { @@ -455,7 +434,6 @@ ada_print_scalar (struct type *type, LONGEST val, struct ui_file *stream) default: error (_("Invalid type code in symbol table.")); } - gdb_flush (stream); } /* Print the character string STRING, printing at most LENGTH characters. @@ -469,7 +447,7 @@ printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string, unsigned int length, int force_ellipses, int type_len, const struct value_print_options *options) { - enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (elttype)); + enum bfd_endian byte_order = type_byte_order (elttype); unsigned int i; unsigned int things_printed = 0; int in_quotes = 0; @@ -511,17 +489,15 @@ printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string, { if (in_quotes) { - if (options->inspect_it) - fputs_filtered ("\\\", ", stream); - else - fputs_filtered ("\", ", stream); + fputs_filtered ("\", ", stream); in_quotes = 0; } fputs_filtered ("'", stream); ada_emit_char (char_at (string, i, type_len, byte_order), elttype, stream, '\'', type_len); fputs_filtered ("'", stream); - fprintf_filtered (stream, _(" "), reps); + fprintf_filtered (stream, _(" %p[%p]"), + metadata_style.style ().ptr (), reps, nullptr); i = rep1 - 1; things_printed += options->repeat_count_threshold; need_comma = 1; @@ -530,10 +506,7 @@ printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string, { if (!in_quotes) { - if (options->inspect_it) - fputs_filtered ("\\\"", stream); - else - fputs_filtered ("\"", stream); + fputs_filtered ("\"", stream); in_quotes = 1; } ada_emit_char (char_at (string, i, type_len, byte_order), @@ -544,12 +517,7 @@ printstr (struct ui_file *stream, struct type *elttype, const gdb_byte *string, /* Terminate the quotes if necessary. */ if (in_quotes) - { - if (options->inspect_it) - fputs_filtered ("\\\"", stream); - else - fputs_filtered ("\"", stream); - } + fputs_filtered ("\"", stream); if (force_ellipses || i < length) fputs_filtered ("...", stream); @@ -565,407 +533,602 @@ ada_printstr (struct ui_file *stream, struct type *type, options); } +static int +print_variant_part (struct value *value, int field_num, + struct value *outer_value, + struct ui_file *stream, int recurse, + const struct value_print_options *options, + int comma_needed, + const struct language_defn *language) +{ + struct type *type = value_type (value); + struct type *var_type = TYPE_FIELD_TYPE (type, field_num); + int which = ada_which_variant_applies (var_type, outer_value); + + if (which < 0) + return 0; + + struct value *variant_field = value_field (value, field_num); + struct value *active_component = value_field (variant_field, which); + return print_field_values (active_component, outer_value, stream, recurse, + options, comma_needed, language); +} + +/* Print out fields of VALUE. + + STREAM, RECURSE, and OPTIONS have the same meanings as in + ada_print_value and ada_value_print. + + OUTER_VALUE gives the 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 value *value, struct value *outer_value, + struct ui_file *stream, int recurse, + const struct value_print_options *options, + int comma_needed, + const struct language_defn *language) +{ + int i, len; + + struct type *type = value_type (value); + len = type->num_fields (); + + for (i = 0; i < len; i += 1) + { + if (ada_is_ignored_field (type, i)) + continue; + + if (ada_is_wrapper_field (type, i)) + { + struct value *field_val = ada_value_primitive_field (value, 0, + i, type); + comma_needed = + print_field_values (field_val, field_val, + stream, recurse, options, + comma_needed, language); + continue; + } + else if (ada_is_variant_part (type, i)) + { + comma_needed = + print_variant_part (value, i, outer_value, stream, recurse, + options, comma_needed, language); + continue; + } + + if (comma_needed) + fprintf_filtered (stream, ", "); + comma_needed = 1; + + if (options->prettyformat) + { + fprintf_filtered (stream, "\n"); + print_spaces_filtered (2 + 2 * recurse, stream); + } + else + { + wrap_here (n_spaces (2 + 2 * recurse)); + } + + 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)) + { + /* Bitfields require special handling, especially due to byte + order problems. */ + if (HAVE_CPLUS_STRUCT (type) && TYPE_FIELD_IGNORE (type, i)) + { + fputs_styled (_(""), + metadata_style.style (), stream); + } + else + { + struct value *v; + 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 + (value, nullptr, + bit_pos / HOST_CHAR_BIT, + bit_pos % HOST_CHAR_BIT, + bit_size, TYPE_FIELD_TYPE (type, i)); + opts = *options; + opts.deref_ref = 0; + common_val_print (v, stream, recurse + 1, &opts, language); + } + } + else + { + struct value_print_options opts = *options; + + opts.deref_ref = 0; + + struct value *v = value_field (value, i); + common_val_print (v, stream, recurse + 1, &opts, language); + } + annotate_field_end (); + } -/* See 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 val_print. */ + return comma_needed; +} + +/* Implement Ada val_print'ing for the case where TYPE is + a TYPE_CODE_ARRAY of characters. */ -int -ada_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) +static void +ada_val_print_string (struct type *type, const gdb_byte *valaddr, + int offset_aligned, + struct ui_file *stream, int recurse, + const struct value_print_options *options) { - volatile struct gdb_exception except; - int result = 0; + enum bfd_endian byte_order = type_byte_order (type); + struct type *elttype = TYPE_TARGET_TYPE (type); + unsigned int eltlen; + unsigned int len; + + /* We know that ELTTYPE cannot possibly be null, because we assume + that we're called only when TYPE is a string-like type. + Similarly, the size of ELTTYPE should also be non-null, since + it's a character-like type. */ + gdb_assert (elttype != NULL); + gdb_assert (TYPE_LENGTH (elttype) != 0); - /* XXX: this catches QUIT/ctrl-c as well. Isn't that busted? */ - TRY_CATCH (except, RETURN_MASK_ALL) + eltlen = TYPE_LENGTH (elttype); + len = TYPE_LENGTH (type) / eltlen; + + /* If requested, look for the first null char and only print + elements up to it. */ + if (options->stop_print_at_null) { - result = ada_val_print_1 (type, valaddr, embedded_offset, address, - stream, recurse, val, options); + int temp_len; + + /* Look for a NULL char. */ + for (temp_len = 0; + (temp_len < len + && temp_len < options->print_max + && char_at (valaddr + offset_aligned, + temp_len, eltlen, byte_order) != 0); + temp_len += 1); + len = temp_len; } - if (except.reason < 0) - result = 0; + printstr (stream, elttype, valaddr + offset_aligned, len, 0, + eltlen, options); +} + +/* Implement Ada val_print-ing for GNAT arrays (Eg. fat pointers, + thin pointers, etc). */ + +static void +ada_val_print_gnat_array (struct value *val, + struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + scoped_value_mark free_values; + + struct type *type = ada_check_typedef (value_type (val)); - return result; + /* If this is a reference, coerce it now. This helps taking care + of the case where ADDRESS is meaningless because original_value + was not an lval. */ + val = coerce_ref (val); + if (type->code () == TYPE_CODE_TYPEDEF) /* array access type. */ + val = ada_coerce_to_simple_array_ptr (val); + else + val = ada_coerce_to_simple_array (val); + if (val == NULL) + { + gdb_assert (type->code () == TYPE_CODE_TYPEDEF); + fprintf_filtered (stream, "0x0"); + } + else + common_val_print (val, stream, recurse, options, + language_def (language_ada)); } -/* Assuming TYPE is a simple array, print the value of this array located - at VALADDR + OFFSET. 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. */ +/* Implement Ada value_print'ing for the case where TYPE is a + TYPE_CODE_PTR. */ -static int -ada_val_print_array (struct type *type, const gdb_byte *valaddr, - int offset, CORE_ADDR address, +static void +ada_value_print_ptr (struct value *val, struct ui_file *stream, int recurse, - const struct value *val, const struct value_print_options *options) { - int result = 0; + common_val_print (val, stream, recurse, options, language_def (language_c)); - /* For an array of chars, print with string syntax. */ - if (ada_is_string_type (type) - && (options->format == 0 || options->format == 's')) + struct type *type = ada_check_typedef (value_type (val)); + if (ada_is_tag_type (type)) { - enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type)); - struct type *elttype = TYPE_TARGET_TYPE (type); - unsigned int eltlen; - unsigned int len; - - /* We know that ELTTYPE cannot possibly be null, because we found - that TYPE is a string-like type. Similarly, the size of ELTTYPE - should also be non-null, since it's a character-like type. */ - gdb_assert (elttype != NULL); - gdb_assert (TYPE_LENGTH (elttype) != 0); - - eltlen = TYPE_LENGTH (elttype); - len = TYPE_LENGTH (type) / eltlen; - - 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 + offset, - temp_len, eltlen, byte_order) != 0); - temp_len += 1); - len = temp_len; - } - - printstr (stream, elttype, valaddr + offset, len, 0, eltlen, options); - result = len; + const char *name = ada_tag_name (val); + + if (name != NULL) + fprintf_filtered (stream, " (%s)", name); + } +} + +/* Implement Ada val_print'ing for the case where TYPE is + a TYPE_CODE_INT or TYPE_CODE_RANGE. */ + +static void +ada_value_print_num (struct value *val, struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + struct type *type = ada_check_typedef (value_type (val)); + const gdb_byte *valaddr = value_contents_for_printing (val); + + if (ada_is_gnat_encoded_fixed_point_type (type)) + { + struct value *scale = ada_scaling_factor (type); + val = value_cast (value_type (scale), val); + val = value_binop (val, scale, BINOP_MUL); + + const char *fmt = TYPE_LENGTH (type) < 4 ? "%.11g" : "%.17g"; + std::string str + = target_float_to_string (value_contents (val), value_type (val), fmt); + fputs_filtered (str.c_str (), stream); + return; + } + else if (type->code () == TYPE_CODE_RANGE + && (TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_ENUM + || TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_BOOL + || TYPE_TARGET_TYPE (type)->code () == TYPE_CODE_CHAR)) + { + /* For enum-valued ranges, we want to recurse, because we'll end + up printing the constant's name rather than its numeric + value. Character and fixed-point types are also printed + differently, so recuse for those as well. */ + struct type *target_type = TYPE_TARGET_TYPE (type); + val = value_cast (target_type, val); + common_val_print (val, stream, recurse + 1, options, + language_def (language_ada)); + return; } 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, offset, - 0, stream, recurse, val, options); + int format = (options->format ? options->format + : options->output_format); + + if (format) + { + struct value_print_options opts = *options; + + opts.format = format; + value_print_scalar_formatted (val, &opts, 0, stream); + } + else if (ada_is_system_address_type (type)) + { + /* 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. */ + + struct gdbarch *gdbarch = get_type_arch (type); + struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; + CORE_ADDR addr = extract_typed_address (valaddr, ptr_type); + + fprintf_filtered (stream, "("); + type_print (type, "", stream, -1); + fprintf_filtered (stream, ") "); + fputs_filtered (paddress (gdbarch, addr), stream); + } else - val_print_array_elements (type, valaddr, offset, address, - stream, recurse, val, options, 0); - fprintf_filtered (stream, ")"); - } + { + value_print_scalar_formatted (val, options, 0, stream); + if (ada_is_character_type (type)) + { + LONGEST c; - return result; + fputs_filtered (" ", stream); + c = unpack_long (type, valaddr); + ada_printchar (c, type, stream); + } + } + return; + } } -/* See the comment on ada_val_print. This function differs in that it - does not catch evaluation errors (leaving that to ada_val_print). */ +/* Implement Ada val_print'ing for the case where TYPE is + a TYPE_CODE_ENUM. */ -static int -ada_val_print_1 (struct type *type, const gdb_byte *valaddr, - int offset, CORE_ADDR address, - struct ui_file *stream, int recurse, - const struct value *original_value, - const struct value_print_options *options) +static void +ada_val_print_enum (struct value *value, struct ui_file *stream, int recurse, + const struct value_print_options *options) { - unsigned int len; int i; - struct type *elttype; + unsigned int len; LONGEST val; - int offset_aligned; - type = ada_check_typedef (type); + if (options->format) + { + value_print_scalar_formatted (value, options, 0, stream); + return; + } - if (ada_is_array_descriptor_type (type) - || ada_is_constrained_packed_array_type (type)) + struct type *type = ada_check_typedef (value_type (value)); + const gdb_byte *valaddr = value_contents_for_printing (value); + int offset_aligned = ada_aligned_value_addr (type, valaddr) - valaddr; + + len = type->num_fields (); + val = unpack_long (type, valaddr + offset_aligned); + for (i = 0; i < len; i++) { - int retn; - struct value *mark = value_mark (); - struct value *val; + QUIT; + if (val == TYPE_FIELD_ENUMVAL (type, i)) + break; + } - val = value_from_contents_and_address (type, valaddr + offset, address); - if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) /* array access type. */ - val = ada_coerce_to_simple_array_ptr (val); - else - val = ada_coerce_to_simple_array (val); - if (val == NULL) - { - gdb_assert (TYPE_CODE (type) == TYPE_CODE_TYPEDEF); - fprintf_filtered (stream, "0x0"); - retn = 0; - } + if (i < len) + { + const char *name = ada_enum_name (TYPE_FIELD_NAME (type, i)); + + if (name[0] == '\'') + fprintf_filtered (stream, "%ld %ps", (long) val, + styled_string (variable_name_style.style (), + name)); else - retn = ada_val_print_1 (value_type (val), - value_contents_for_printing (val), - value_embedded_offset (val), - value_address (val), stream, recurse, - val, options); - value_free_to_mark (mark); - return retn; + fputs_styled (name, variable_name_style.style (), stream); } + else + print_longest (stream, 'd', 0, val); +} - offset_aligned = offset + ada_aligned_value_addr (type, valaddr) - valaddr; - type = printable_val_type (type, valaddr + offset_aligned); +/* Implement Ada val_print'ing for the case where the type is + TYPE_CODE_STRUCT or TYPE_CODE_UNION. */ - switch (TYPE_CODE (type)) +static void +ada_val_print_struct_union (struct value *value, + struct ui_file *stream, + int recurse, + const struct value_print_options *options) +{ + if (ada_is_bogus_array_descriptor (value_type (value))) { - default: - return c_val_print (type, valaddr, offset, address, stream, - recurse, original_value, options); + fprintf_filtered (stream, "(...?)"); + return; + } - case TYPE_CODE_PTR: - { - int ret = c_val_print (type, valaddr, offset, address, - stream, recurse, original_value, options); - - if (ada_is_tag_type (type)) - { - struct value *val = - value_from_contents_and_address (type, - valaddr + offset_aligned, - address + offset_aligned); - const char *name = ada_tag_name (val); - - if (name != NULL) - fprintf_filtered (stream, " (%s)", name); - return 0; - } - return ret; - } + fprintf_filtered (stream, "("); - case TYPE_CODE_INT: - case TYPE_CODE_RANGE: - if (ada_is_fixed_point_type (type)) - { - LONGEST v = unpack_long (type, valaddr + offset_aligned); - int len = TYPE_LENGTH (type); + if (print_field_values (value, value, stream, recurse, options, + 0, language_def (language_ada)) != 0 + && options->prettyformat) + { + fprintf_filtered (stream, "\n"); + print_spaces_filtered (2 * recurse, stream); + } - fprintf_filtered (stream, len < 4 ? "%.11g" : "%.17g", - (double) ada_fixed_to_float (type, v)); - return 0; - } - else if (TYPE_CODE (type) == TYPE_CODE_RANGE) - { - struct type *target_type = TYPE_TARGET_TYPE (type); + fprintf_filtered (stream, ")"); +} - 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 *v1 - = value_from_contents_and_address (type, valaddr + offset, 0); - struct value *v = value_cast (target_type, v1); - - return ada_val_print_1 (target_type, - value_contents_for_printing (v), - value_embedded_offset (v), 0, - stream, recurse + 1, v, options); - } - else - return ada_val_print_1 (TYPE_TARGET_TYPE (type), - valaddr, offset, - address, stream, recurse, - original_value, options); - } - else - { - int format = (options->format ? options->format - : options->output_format); +/* Implement Ada value_print'ing for the case where TYPE is a + TYPE_CODE_ARRAY. */ - if (format) - { - struct value_print_options opts = *options; +static void +ada_value_print_array (struct value *val, struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + struct type *type = ada_check_typedef (value_type (val)); - opts.format = format; - val_print_scalar_formatted (type, valaddr, offset_aligned, - original_value, &opts, 0, stream); - } - else if (ada_is_system_address_type (type)) - { - /* 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. */ - - struct gdbarch *gdbarch = get_type_arch (type); - struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr; - CORE_ADDR addr = extract_typed_address (valaddr + offset_aligned, - ptr_type); - - fprintf_filtered (stream, "("); - type_print (type, "", stream, -1); - fprintf_filtered (stream, ") "); - fputs_filtered (paddress (gdbarch, addr), stream); - } - else - { - val_print_type_code_int (type, valaddr + offset_aligned, stream); - if (ada_is_character_type (type)) - { - LONGEST c; + /* For an array of characters, print with string syntax. */ + if (ada_is_string_type (type) + && (options->format == 0 || options->format == 's')) + { + const gdb_byte *valaddr = value_contents_for_printing (val); + int offset_aligned = ada_aligned_value_addr (type, valaddr) - valaddr; - fputs_filtered (" ", stream); - c = unpack_long (type, valaddr + offset_aligned); - ada_printchar (c, type, stream); - } - } - return 0; - } + ada_val_print_string (type, valaddr, offset_aligned, stream, recurse, + options); + return; + } - case TYPE_CODE_ENUM: - if (options->format) - { - val_print_scalar_formatted (type, valaddr, offset_aligned, - original_value, options, 0, stream); - break; - } - len = TYPE_NFIELDS (type); - val = unpack_long (type, valaddr + offset_aligned); - 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)); + fprintf_filtered (stream, "("); + print_optional_low_bound (stream, type, options); + if (TYPE_FIELD_BITSIZE (type, 0) > 0) + { + const gdb_byte *valaddr = value_contents_for_printing (val); + int offset_aligned = ada_aligned_value_addr (type, valaddr) - valaddr; + val_print_packed_array_elements (type, valaddr, offset_aligned, + stream, recurse, options); + } + else + value_print_array_elements (val, stream, recurse, options, 0); + fprintf_filtered (stream, ")"); +} - if (name[0] == '\'') - fprintf_filtered (stream, "%ld %s", (long) val, name); - else - fputs_filtered (name, stream); - } - else - { - print_longest (stream, 'd', 0, val); - } +/* Implement Ada val_print'ing for the case where TYPE is + a TYPE_CODE_REF. */ + +static void +ada_val_print_ref (struct type *type, const gdb_byte *valaddr, + int offset, int offset_aligned, CORE_ADDR address, + struct ui_file *stream, int recurse, + struct value *original_value, + const struct value_print_options *options) +{ + /* 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. */ + struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type)); + struct value *deref_val; + CORE_ADDR deref_val_int; + + if (elttype->code () == TYPE_CODE_UNDEF) + { + fputs_styled ("", metadata_style.style (), + stream); + return; + } + + deref_val = coerce_ref_if_computed (original_value); + if (deref_val) + { + if (ada_is_tagged_type (value_type (deref_val), 1)) + deref_val = ada_tag_value_at_base_address (deref_val); + + common_val_print (deref_val, stream, recurse + 1, options, + language_def (language_ada)); + return; + } + + deref_val_int = unpack_pointer (type, valaddr + offset_aligned); + if (deref_val_int == 0) + { + fputs_filtered ("(null)", stream); + return; + } + + deref_val + = ada_value_ind (value_from_pointer (lookup_pointer_type (elttype), + deref_val_int)); + if (ada_is_tagged_type (value_type (deref_val), 1)) + deref_val = ada_tag_value_at_base_address (deref_val); + + /* Make sure that the object does not have an unreasonable size + before trying to print it. This can happen for instance with + references to dynamic objects whose contents is uninitialized + (Eg: an array whose bounds are not set yet). */ + ada_ensure_varsize_limit (value_type (deref_val)); + + if (value_lazy (deref_val)) + value_fetch_lazy (deref_val); + + common_val_print (deref_val, stream, recurse + 1, + options, language_def (language_ada)); +} + +/* See the comment on ada_value_print. This function differs in that + it does not catch evaluation errors (leaving that to + ada_value_print). */ + +static void +ada_value_print_1 (struct value *val, struct ui_file *stream, int recurse, + const struct value_print_options *options) +{ + struct type *type = ada_check_typedef (value_type (val)); + + if (ada_is_array_descriptor_type (type) + || (ada_is_constrained_packed_array_type (type) + && type->code () != TYPE_CODE_PTR)) + { + ada_val_print_gnat_array (val, stream, recurse, options); + return; + } + + val = ada_to_fixed_value (val); + type = value_type (val); + struct type *saved_type = type; + + const gdb_byte *valaddr = value_contents_for_printing (val); + CORE_ADDR address = value_address (val); + gdb::array_view view + = gdb::make_array_view (valaddr, TYPE_LENGTH (type)); + type = ada_check_typedef (resolve_dynamic_type (type, view, address)); + if (type != saved_type) + { + val = value_copy (val); + deprecated_set_value_type (val, type); + } + + switch (type->code ()) + { + default: + common_val_print (val, stream, recurse, options, + language_def (language_c)); break; - case TYPE_CODE_FLAGS: - if (options->format) - val_print_scalar_formatted (type, valaddr, offset_aligned, - original_value, options, 0, stream); - else - val_print_type_code_flags (type, valaddr + offset_aligned, stream); + case TYPE_CODE_PTR: + ada_value_print_ptr (val, stream, recurse, options); + break; + + case TYPE_CODE_INT: + case TYPE_CODE_RANGE: + ada_value_print_num (val, stream, recurse, options); + break; + + case TYPE_CODE_ENUM: + ada_val_print_enum (val, stream, recurse, options); break; case TYPE_CODE_FLT: if (options->format) - return c_val_print (type, valaddr, offset, address, stream, - recurse, original_value, options); - else - ada_print_floating (valaddr + offset, type, stream); + { + common_val_print (val, stream, recurse, options, + language_def (language_c)); + break; + } + + ada_print_floating (valaddr, 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, offset_aligned, - stream, recurse, original_value, options); - return 0; - } + ada_val_print_struct_union (val, stream, recurse, options); + break; case TYPE_CODE_ARRAY: - return ada_val_print_array (type, valaddr, offset_aligned, - address, stream, recurse, original_value, - options); + ada_value_print_array (val, stream, recurse, options); + return; 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) - { - CORE_ADDR deref_val_int - = unpack_pointer (type, valaddr + offset_aligned); - - if (deref_val_int != 0) - { - struct value *deref_val = - ada_value_ind (value_from_pointer - (lookup_pointer_type (elttype), - deref_val_int)); - - val_print (value_type (deref_val), - value_contents_for_printing (deref_val), - value_embedded_offset (deref_val), - value_address (deref_val), stream, recurse + 1, - deref_val, options, current_language); - } - else - fputs_filtered ("(null)", stream); - } - else - fputs_filtered ("???", stream); - + ada_val_print_ref (type, valaddr, 0, 0, + address, stream, recurse, val, + options); break; } - gdb_flush (stream); - return 0; } -static int -print_variant_part (struct type *type, int field_num, - const gdb_byte *valaddr, int offset, - struct ui_file *stream, int recurse, - const struct value *val, - const struct value_print_options *options, - int comma_needed, - struct type *outer_type, int outer_offset) -{ - struct type *var_type = TYPE_FIELD_TYPE (type, field_num); - int which = ada_which_variant_applies (var_type, outer_type, - valaddr + outer_offset); +/* See ada-lang.h. */ - if (which < 0) - return 0; - else - return print_field_values - (TYPE_FIELD_TYPE (var_type, which), - valaddr, - offset + TYPE_FIELD_BITPOS (type, field_num) / HOST_CHAR_BIT - + TYPE_FIELD_BITPOS (var_type, which) / HOST_CHAR_BIT, - stream, recurse, val, options, - comma_needed, outer_type, outer_offset); +void +ada_value_print_inner (struct value *val, struct ui_file *stream, + int recurse, + const struct value_print_options *options) +{ + try + { + ada_value_print_1 (val, stream, recurse, options); + } + catch (const gdb_exception_error &except) + { + fprintf_styled (stream, metadata_style.style (), + _(""), + except.what ()); + } } -int +void ada_value_print (struct value *val0, struct ui_file *stream, const struct value_print_options *options) { struct value *val = ada_to_fixed_value (val0); - CORE_ADDR address = value_address (val); struct type *type = ada_check_typedef (value_type (val)); struct value_print_options opts; /* If it is a pointer, indicate what it points to. */ - if (TYPE_CODE (type) == TYPE_CODE_PTR) + if (type->code () == 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_TARGET_TYPE (type)->code () != TYPE_CODE_INT || TYPE_UNSIGNED (TYPE_TARGET_TYPE (type))) { fprintf_filtered (stream, "("); @@ -978,7 +1141,7 @@ ada_value_print (struct value *val0, struct ui_file *stream, /* We do not print the type description unless TYPE is an array access type (this is encoded by the compiler as a typedef to a fat pointer - hence the check against TYPE_CODE_TYPEDEF). */ - if (TYPE_CODE (type) == TYPE_CODE_TYPEDEF) + if (type->code () == TYPE_CODE_TYPEDEF) { fprintf_filtered (stream, "("); type_print (type, "", stream, -1); @@ -990,172 +1153,10 @@ ada_value_print (struct value *val0, struct ui_file *stream, fprintf_filtered (stream, "("); type_print (type, "", stream, -1); fprintf_filtered (stream, ") (...?)"); - return 0; + return; } opts = *options; opts.deref_ref = 1; - return (val_print (type, value_contents_for_printing (val), - value_embedded_offset (val), address, - stream, 0, val, &opts, current_language)); -} - -static void -print_record (struct type *type, const gdb_byte *valaddr, - int offset, - struct ui_file *stream, int recurse, - const struct value *val, - const struct value_print_options *options) -{ - type = ada_check_typedef (type); - - fprintf_filtered (stream, "("); - - if (print_field_values (type, valaddr, offset, - stream, recurse, val, options, - 0, type, offset) != 0 && options->pretty) - { - fprintf_filtered (stream, "\n"); - print_spaces_filtered (2 * recurse, stream); - } - - fprintf_filtered (stream, ")"); -} - -/* Print out fields of value at VALADDR + OFFSET having structure type TYPE. - - TYPE, VALADDR, OFFSET, STREAM, RECURSE, and OPTIONS have the same - meanings as in ada_print_value and ada_val_print. - - OUTER_TYPE and OUTER_OFFSET 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, - int offset, struct ui_file *stream, int recurse, - const struct value *val, - const struct value_print_options *options, - int comma_needed, - struct type *outer_type, int outer_offset) -{ - 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, - (offset - + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT), - stream, recurse, val, options, - comma_needed, type, offset); - continue; - } - else if (ada_is_variant_part (type, i)) - { - comma_needed = - print_variant_part (type, i, valaddr, - offset, stream, recurse, val, - options, comma_needed, - outer_type, outer_offset); - 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 (HAVE_CPLUS_STRUCT (type) && TYPE_FIELD_IGNORE (type, i)) - { - fputs_filtered (_(""), 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, - offset + 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_for_printing (v), - value_embedded_offset (v), 0, - stream, recurse + 1, v, - &opts, current_language); - } - } - else - { - struct value_print_options opts = *options; - - opts.deref_ref = 0; - ada_val_print (TYPE_FIELD_TYPE (type, i), - valaddr, - (offset - + TYPE_FIELD_BITPOS (type, i) / HOST_CHAR_BIT), - 0, stream, recurse + 1, val, &opts); - } - annotate_field_end (); - } - - return comma_needed; + common_val_print (val, stream, 0, &opts, current_language); }