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- /* Support for printing Chill values for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994
- 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 2 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "defs.h"
- #include "obstack.h"
- #include "symtab.h"
- #include "gdbtypes.h"
- #include "valprint.h"
- #include "expression.h"
- #include "value.h"
- #include "language.h"
- #include "demangle.h"
- #include "c-lang.h" /* For c_val_print */
- #include "typeprint.h"
- #include "ch-lang.h"
-
- static void
- chill_print_value_fields PARAMS ((struct type *, char *, GDB_FILE *, int, int,
- enum val_prettyprint, struct type **));
-
-
- /* Print integral scalar data VAL, of type TYPE, onto stdio stream STREAM.
- Used to print data from type structures in a specified type. For example,
- array bounds may be characters or booleans in some languages, and this
- allows the ranges to be printed in their "natural" form rather than as
- decimal integer values. */
-
- void
- chill_print_type_scalar (type, val, stream)
- struct type *type;
- LONGEST val;
- GDB_FILE *stream;
- {
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_RANGE:
- if (TYPE_TARGET_TYPE (type))
- {
- chill_print_type_scalar (TYPE_TARGET_TYPE (type), val, stream);
- return;
- }
- }
- print_type_scalar (type, val, stream);
- }
-
- /* Print the elements of an array.
- Similar to val_print_array_elements, but prints
- element indexes (in Chill syntax). */
-
- static void
- chill_val_print_array_elements (type, valaddr, address, stream,
- format, deref_ref, recurse, pretty)
- struct type *type;
- char *valaddr;
- CORE_ADDR address;
- GDB_FILE *stream;
- int format;
- int deref_ref;
- int recurse;
- enum val_prettyprint pretty;
- {
- unsigned int i = 0;
- unsigned int things_printed = 0;
- unsigned len;
- struct type *elttype;
- struct type *range_type = TYPE_FIELD_TYPE (type, 0);
- struct type *index_type = TYPE_TARGET_TYPE (range_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 = TYPE_FIELD_BITPOS (range_type, 0);
- LONGEST high_bound = TYPE_FIELD_BITPOS (range_type, 1);
-
- elttype = TYPE_TARGET_TYPE (type);
- eltlen = TYPE_LENGTH (elttype);
- len = TYPE_LENGTH (type) / eltlen;
-
- annotate_array_section_begin (i, elttype);
-
- for (; i < len && things_printed < print_max; i++)
- {
- if (i != 0)
- {
- if (prettyprint_arrays)
- {
- fprintf_filtered (stream, ",\n");
- print_spaces_filtered (2 + 2 * recurse, stream);
- }
- else
- {
- fprintf_filtered (stream, ", ");
- }
- }
- wrap_here (n_spaces (2 + 2 * recurse));
-
- rep1 = i + 1;
- reps = 1;
- while ((rep1 < len) &&
- !memcmp (valaddr + i * eltlen, valaddr + rep1 * eltlen, eltlen))
- {
- ++reps;
- ++rep1;
- }
-
- fputs_filtered ("(", stream);
- chill_print_type_scalar (index_type, low_bound + i, stream);
- if (reps > 1)
- {
- fputs_filtered (":", stream);
- chill_print_type_scalar (index_type, low_bound + i + reps - 1,
- stream);
- fputs_filtered ("): ", stream);
- val_print (elttype, valaddr + i * eltlen, 0, stream, format,
- deref_ref, recurse + 1, pretty);
-
- i = rep1 - 1;
- things_printed += 1;
- }
- else
- {
- fputs_filtered ("): ", stream);
- val_print (elttype, valaddr + i * eltlen, 0, stream, format,
- deref_ref, recurse + 1, pretty);
- annotate_elt ();
- things_printed++;
- }
- }
- annotate_array_section_end ();
- if (i < len)
- {
- fprintf_filtered (stream, "...");
- }
- }
-
- /* 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). The data at VALADDR is in
- target byte order.
-
- If the data are a string pointer, returns the number of string characters
- printed.
-
- If DEREF_REF is nonzero, then dereference references, otherwise just print
- them like pointers.
-
- The PRETTY parameter controls prettyprinting. */
-
- int
- chill_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
- pretty)
- struct type *type;
- char *valaddr;
- CORE_ADDR address;
- GDB_FILE *stream;
- int format;
- int deref_ref;
- int recurse;
- enum val_prettyprint pretty;
- {
- LONGEST val;
- unsigned int i = 0; /* Number of characters printed. */
- struct type *elttype;
- CORE_ADDR addr;
-
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_ARRAY:
- if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0)
- {
- if (prettyprint_arrays)
- {
- print_spaces_filtered (2 + 2 * recurse, stream);
- }
- fprintf_filtered (stream, "[");
- chill_val_print_array_elements (type, valaddr, address, stream,
- format, deref_ref, recurse, pretty);
- fprintf_filtered (stream, "]");
- }
- else
- {
- error ("unimplemented in chill_val_print; unspecified array length");
- }
- break;
-
- case TYPE_CODE_INT:
- format = format ? format : output_format;
- if (format)
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- }
- else
- {
- val_print_type_code_int (type, valaddr, stream);
- }
- break;
-
- case TYPE_CODE_CHAR:
- format = format ? format : output_format;
- if (format)
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- }
- else
- {
- LA_PRINT_CHAR ((unsigned char) unpack_long (type, valaddr),
- stream);
- }
- break;
-
- case TYPE_CODE_FLT:
- if (format)
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- }
- else
- {
- print_floating (valaddr, type, stream);
- }
- break;
-
- case TYPE_CODE_BOOL:
- format = format ? format : output_format;
- if (format)
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- }
- else
- {
- /* FIXME: Why is this using builtin_type_chill_bool not type? */
- val = unpack_long (builtin_type_chill_bool, valaddr);
- fprintf_filtered (stream, val ? "TRUE" : "FALSE");
- }
- break;
-
- case TYPE_CODE_UNDEF:
- /* This happens (without TYPE_FLAG_STUB set) on systems which don't use
- dbx xrefs (NO_DBX_XREFS in gcc) if a file has a "struct foo *bar"
- and no complete type for struct foo in that file. */
- fprintf_filtered (stream, "<incomplete type>");
- break;
-
- case TYPE_CODE_PTR:
- if (format && format != 's')
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- break;
- }
- addr = unpack_pointer (type, valaddr);
- elttype = TYPE_TARGET_TYPE (type);
-
- /* We assume a NULL pointer is all zeros ... */
- if (addr == 0)
- {
- fputs_filtered ("NULL", stream);
- return 0;
- }
-
- if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
- {
- /* Try to print what function it points to. */
- print_address_demangle (addr, stream, demangle);
- /* Return value is irrelevant except for string pointers. */
- return (0);
- }
- if (addressprint && format != 's')
- {
- print_address_numeric (addr, 1, stream);
- }
-
- /* For a pointer to char or unsigned char, also print the string
- pointed to, unless pointer is null. */
- if (TYPE_LENGTH (elttype) == 1
- && TYPE_CODE (elttype) == TYPE_CODE_CHAR
- && (format == 0 || format == 's')
- && addr != 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)
- {
- i = val_print_string (addr, 0, stream);
- }
- /* 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_STRING:
- i = TYPE_LENGTH (type);
- LA_PRINT_STRING (stream, valaddr, i, 0);
- /* 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_BITSTRING:
- case TYPE_CODE_SET:
- elttype = TYPE_INDEX_TYPE (type);
- check_stub_type (elttype);
- if (TYPE_FLAGS (elttype) & TYPE_FLAG_STUB)
- {
- fprintf_filtered (stream, "<incomplete type>");
- gdb_flush (stream);
- break;
- }
- {
- struct type *range = elttype;
- int low_bound = TYPE_LOW_BOUND (range);
- int high_bound = TYPE_HIGH_BOUND (range);
- int i;
- int is_bitstring = TYPE_CODE (type) == TYPE_CODE_BITSTRING;
- int need_comma = 0;
-
- if (is_bitstring)
- fputs_filtered ("B'", stream);
- else
- fputs_filtered ("[", stream);
- for (i = low_bound; i <= high_bound; i++)
- {
- int element = value_bit_index (type, valaddr, i);
- if (is_bitstring)
- fprintf_filtered (stream, "%d", element);
- else if (element)
- {
- if (need_comma)
- fputs_filtered (", ", stream);
- chill_print_type_scalar (range, i, stream);
- need_comma = 1;
-
- /* Look for a continuous range of true elements. */
- if (i+1 <= high_bound && value_bit_index (type, valaddr, ++i))
- {
- int j = i; /* j is the upper bound so far of the range */
- fputs_filtered (":", stream);
- while (i+1 <= high_bound
- && value_bit_index (type, valaddr, ++i))
- j = i;
- chill_print_type_scalar (range, j, stream);
- }
- }
- }
- if (is_bitstring)
- fputs_filtered ("'", stream);
- else
- fputs_filtered ("]", stream);
- }
- break;
-
- case TYPE_CODE_STRUCT:
- if (chill_varying_type (type))
- {
- struct type *inner = TYPE_FIELD_TYPE (type, 1);
- long length = unpack_long (TYPE_FIELD_TYPE (type, 0), valaddr);
- char *data_addr = valaddr + TYPE_FIELD_BITPOS (type, 1) / 8;
-
- switch (TYPE_CODE (inner))
- {
- case TYPE_CODE_STRING:
- if (length > TYPE_LENGTH (type))
- {
- fprintf_filtered (stream,
- "<dynamic length %d > static length %d>",
- length, TYPE_LENGTH (type));
- }
- LA_PRINT_STRING (stream, data_addr, length, 0);
- return length;
- default:
- break;
- }
- }
- chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
- 0);
- break;
-
- case TYPE_CODE_REF:
- if (addressprint)
- {
- fprintf_filtered (stream, "LOC(");
- print_address_numeric
- (extract_address (valaddr, TARGET_PTR_BIT / HOST_CHAR_BIT),
- 1,
- stream);
- fprintf_filtered (stream, ")");
- if (deref_ref)
- fputs_filtered (": ", stream);
- }
- /* De-reference the reference. */
- if (deref_ref)
- {
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
- {
- value_ptr deref_val =
- value_at
- (TYPE_TARGET_TYPE (type),
- unpack_pointer (lookup_pointer_type (builtin_type_void),
- valaddr));
- val_print (VALUE_TYPE (deref_val),
- VALUE_CONTENTS (deref_val),
- VALUE_ADDRESS (deref_val), stream, format,
- deref_ref, recurse + 1, pretty);
- }
- else
- fputs_filtered ("???", stream);
- }
- break;
-
- case TYPE_CODE_ENUM:
- c_val_print (type, valaddr, address, stream, format,
- deref_ref, recurse, pretty);
- break;
-
- case TYPE_CODE_RANGE:
- if (TYPE_TARGET_TYPE (type))
- chill_val_print (TYPE_TARGET_TYPE (type), valaddr, address, stream,
- format, deref_ref, recurse, pretty);
- break;
-
- case TYPE_CODE_MEMBER:
- case TYPE_CODE_UNION:
- case TYPE_CODE_FUNC:
- case TYPE_CODE_VOID:
- case TYPE_CODE_ERROR:
- default:
- /* Let's defer printing to the C printer, rather than
- print an error message. FIXME! */
- c_val_print (type, valaddr, address, stream, format,
- deref_ref, recurse, pretty);
- }
- gdb_flush (stream);
- return (0);
- }
-
- /* Mutually recursive subroutines of cplus_print_value and c_val_print to
- print out a structure's fields: cp_print_value_fields and cplus_print_value.
-
- TYPE, VALADDR, STREAM, RECURSE, and PRETTY have the
- same meanings as in cplus_print_value and c_val_print.
-
- DONT_PRINT is an array of baseclass types that we
- should not print, or zero if called from top level. */
-
- static void
- chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
- dont_print)
- struct type *type;
- char *valaddr;
- GDB_FILE *stream;
- int format;
- int recurse;
- enum val_prettyprint pretty;
- struct type **dont_print;
- {
- int i, len;
- int fields_seen = 0;
-
- check_stub_type (type);
-
- fprintf_filtered (stream, "[");
- len = TYPE_NFIELDS (type);
- if (len == 0)
- {
- fprintf_filtered (stream, "<No data fields>");
- }
- else
- {
- for (i = 0; i < len; i++)
- {
- if (fields_seen)
- {
- fprintf_filtered (stream, ", ");
- }
- fields_seen = 1;
- if (pretty)
- {
- fprintf_filtered (stream, "\n");
- print_spaces_filtered (2 + 2 * recurse, stream);
- }
- else
- {
- wrap_here (n_spaces (2 + 2 * recurse));
- }
- fputs_filtered (".", stream);
- fprintf_symbol_filtered (stream, TYPE_FIELD_NAME (type, i),
- language_chill, DMGL_NO_OPTS);
- fputs_filtered (": ", stream);
- if (TYPE_FIELD_PACKED (type, i))
- {
- value_ptr v;
-
- /* Bitfields require special handling, especially due to byte
- order problems. */
- v = value_from_longest (TYPE_FIELD_TYPE (type, i),
- unpack_field_as_long (type, valaddr, i));
-
- chill_val_print (TYPE_FIELD_TYPE (type, i), VALUE_CONTENTS (v), 0,
- stream, format, 0, recurse + 1, pretty);
- }
- else
- {
- chill_val_print (TYPE_FIELD_TYPE (type, i),
- valaddr + TYPE_FIELD_BITPOS (type, i) / 8,
- 0, stream, format, 0, recurse + 1, pretty);
- }
- }
- if (pretty)
- {
- fprintf_filtered (stream, "\n");
- print_spaces_filtered (2 * recurse, stream);
- }
- }
- fprintf_filtered (stream, "]");
- }
-
- int
- chill_value_print (val, stream, format, pretty)
- value_ptr val;
- GDB_FILE *stream;
- int format;
- enum val_prettyprint pretty;
- {
- /* 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 (VALUE_REPEATED (val))
- {
- register unsigned int n = VALUE_REPETITIONS (val);
- register unsigned int 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)
- LA_PRINT_STRING (stream, VALUE_CONTENTS (val), n, 0);
- else
- {
- value_print_array_elements (val, stream, format, pretty);
- }
- fprintf_filtered (stream, "]");
- return (n * typelen);
- }
- else
- {
- struct type *type = VALUE_TYPE (val);
-
- /* If it is a pointer, indicate what it points to.
-
- Print type also if it is a reference.
-
- C++: if it is a member pointer, we will take care
- of that when we print it. */
- if (TYPE_CODE (type) == TYPE_CODE_PTR ||
- TYPE_CODE (type) == TYPE_CODE_REF)
- {
- char *valaddr = VALUE_CONTENTS (val);
- CORE_ADDR addr = unpack_pointer (type, valaddr);
- if (TYPE_CODE (type) != TYPE_CODE_PTR || addr != 0)
- {
- int i;
- char *name = TYPE_NAME (type);
- if (name)
- fputs_filtered (name, stream);
- else if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_VOID)
- fputs_filtered ("PTR", stream);
- else
- {
- fprintf_filtered (stream, "(");
- type_print (type, "", stream, -1);
- fprintf_filtered (stream, ")");
- }
- fprintf_filtered (stream, "(");
- i = val_print (type, valaddr, VALUE_ADDRESS (val),
- stream, format, 1, 0, pretty);
- fprintf_filtered (stream, ")");
- return i;
- }
- }
- return (val_print (type, VALUE_CONTENTS (val),
- VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
- }
- }
-
-
-