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- /* Support for printing Chill values for GDB, the GNU debugger.
- Copyright 1986, 1988, 1989, 1991 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"
-
- static void
- chill_print_value_fields PARAMS ((struct type *, char *, FILE *, int, int,
- enum val_prettyprint, struct type **));
-
-
- /* 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;
- 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;
- unsigned eltlen;
- 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, "[");
- val_print_array_elements (type, valaddr, address, stream, format,
- deref_ref, recurse, pretty, 0);
- 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
- {
- 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);
-
- 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')
- {
- fprintf_filtered (stream, "H'%x", addr);
- }
-
- /* 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:
- if (format && format != 's')
- {
- print_scalar_formatted (valaddr, type, format, 0, stream);
- break;
- }
- if (addressprint && format != 's')
- {
- fprintf_filtered (stream, "H'%x ", addr);
- }
- 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_STRUCT:
- chill_print_value_fields (type, valaddr, stream, format, recurse, pretty,
- 0);
- break;
-
- case TYPE_CODE_REF:
- if (addressprint)
- {
- fprintf_filtered (stream, "LOC(H'%lx)",
- unpack_long (builtin_type_int, valaddr));
- if (deref_ref)
- fputs_filtered (": ", stream);
- }
- /* De-reference the reference. */
- if (deref_ref)
- {
- if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_UNDEF)
- {
- value 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_MEMBER:
- case TYPE_CODE_UNION:
- case TYPE_CODE_FUNC:
- case TYPE_CODE_VOID:
- case TYPE_CODE_ERROR:
- case TYPE_CODE_RANGE:
- default:
- /* Let's derfer printing to the C printer, rather than
- print an error message. FIXME! */
- c_val_print (type, valaddr, address, stream, format,
- deref_ref, recurse, pretty);
- }
- fflush (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;
- 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 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, "]");
- }
-
-