431 lines
12 KiB
C
431 lines
12 KiB
C
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/* Pascal language support routines for GDB, the GNU debugger.
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Copyright 2000 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* This file is derived from p-lang.c */
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "parser-defs.h"
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#include "language.h"
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#include "p-lang.h"
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#include "valprint.h"
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extern void _initialize_pascal_language (void);
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static void pascal_one_char (int, struct ui_file *, int *);
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/* Print the character C on STREAM as part of the contents of a literal
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string.
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In_quotes is reset to 0 if a char is written with #4 notation */
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static void
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pascal_one_char (c, stream, in_quotes)
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register int c;
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struct ui_file *stream;
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int *in_quotes;
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{
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c &= 0xFF; /* Avoid sign bit follies */
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if ((c == '\'') || (PRINT_LITERAL_FORM (c)))
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{
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if (!(*in_quotes))
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fputs_filtered ("'", stream);
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*in_quotes = 1;
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if (c == '\'')
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{
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fputs_filtered ("''", stream);
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}
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else
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fprintf_filtered (stream, "%c", c);
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}
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else
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{
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if (*in_quotes)
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fputs_filtered ("'", stream);
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*in_quotes = 0;
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fprintf_filtered (stream, "#%d", (unsigned int) c);
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}
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}
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static void pascal_emit_char (int c, struct ui_file *stream, int quoter);
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/* Print the character C on STREAM as part of the contents of a literal
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string whose delimiter is QUOTER. Note that that format for printing
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characters and strings is language specific. */
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static void
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pascal_emit_char (c, stream, quoter)
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register int c;
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struct ui_file *stream;
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int quoter;
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{
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int in_quotes = 0;
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pascal_one_char (c, stream, &in_quotes);
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if (in_quotes)
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fputs_filtered ("'", stream);
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}
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void
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pascal_printchar (c, stream)
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int c;
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struct ui_file *stream;
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{
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int in_quotes = 0;
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pascal_one_char (c, stream, &in_quotes);
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if (in_quotes)
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fputs_filtered ("'", stream);
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}
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/* Print the character string STRING, printing at most LENGTH characters.
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Printing stops early if the number hits print_max; repeat counts
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are printed as appropriate. Print ellipses at the end if we
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had to stop before printing LENGTH characters, or if FORCE_ELLIPSES. */
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void
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pascal_printstr (stream, string, length, width, force_ellipses)
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struct ui_file *stream;
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char *string;
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unsigned int length;
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int width;
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int force_ellipses;
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{
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register unsigned int i;
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unsigned int things_printed = 0;
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int in_quotes = 0;
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int need_comma = 0;
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extern int inspect_it;
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/* If the string was not truncated due to `set print elements', and
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the last byte of it is a null, we don't print that, in traditional C
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style. */
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if ((!force_ellipses) && length > 0 && string[length - 1] == '\0')
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length--;
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if (length == 0)
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{
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fputs_filtered ("''", stream);
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return;
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}
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for (i = 0; i < length && things_printed < print_max; ++i)
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{
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/* Position of the character we are examining
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to see whether it is repeated. */
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unsigned int rep1;
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/* Number of repetitions we have detected so far. */
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unsigned int reps;
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QUIT;
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if (need_comma)
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{
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fputs_filtered (", ", stream);
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need_comma = 0;
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}
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rep1 = i + 1;
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reps = 1;
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while (rep1 < length && string[rep1] == string[i])
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{
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++rep1;
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++reps;
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}
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if (reps > repeat_count_threshold)
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{
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if (in_quotes)
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{
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if (inspect_it)
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fputs_filtered ("\\', ", stream);
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else
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fputs_filtered ("', ", stream);
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in_quotes = 0;
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}
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pascal_printchar (string[i], stream);
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fprintf_filtered (stream, " <repeats %u times>", reps);
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i = rep1 - 1;
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things_printed += repeat_count_threshold;
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need_comma = 1;
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}
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else
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{
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int c = string[i];
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if ((!in_quotes) && (PRINT_LITERAL_FORM (c)))
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{
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if (inspect_it)
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fputs_filtered ("\\'", stream);
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else
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fputs_filtered ("'", stream);
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in_quotes = 1;
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}
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pascal_one_char (c, stream, &in_quotes);
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++things_printed;
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}
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}
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/* Terminate the quotes if necessary. */
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if (in_quotes)
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{
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if (inspect_it)
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fputs_filtered ("\\'", stream);
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else
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fputs_filtered ("'", stream);
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}
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if (force_ellipses || i < length)
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fputs_filtered ("...", stream);
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}
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/* Create a fundamental Pascal type using default reasonable for the current
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target machine.
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Some object/debugging file formats (DWARF version 1, COFF, etc) do not
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define fundamental types such as "int" or "double". Others (stabs or
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DWARF version 2, etc) do define fundamental types. For the formats which
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don't provide fundamental types, gdb can create such types using this
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function.
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FIXME: Some compilers distinguish explicitly signed integral types
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(signed short, signed int, signed long) from "regular" integral types
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(short, int, long) in the debugging information. There is some dis-
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agreement as to how useful this feature is. In particular, gcc does
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not support this. Also, only some debugging formats allow the
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distinction to be passed on to a debugger. For now, we always just
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use "short", "int", or "long" as the type name, for both the implicit
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and explicitly signed types. This also makes life easier for the
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gdb test suite since we don't have to account for the differences
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in output depending upon what the compiler and debugging format
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support. We will probably have to re-examine the issue when gdb
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starts taking it's fundamental type information directly from the
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debugging information supplied by the compiler. fnf@cygnus.com */
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/* Note there might be some discussion about the choosen correspondance
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because it mainly reflects Free Pascal Compiler setup for now PM */
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struct type *
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pascal_create_fundamental_type (objfile, typeid)
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struct objfile *objfile;
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int typeid;
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{
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register struct type *type = NULL;
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switch (typeid)
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{
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default:
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/* FIXME: For now, if we are asked to produce a type not in this
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language, create the equivalent of a C integer type with the
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name "<?type?>". When all the dust settles from the type
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reconstruction work, this should probably become an error. */
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type = init_type (TYPE_CODE_INT,
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TARGET_INT_BIT / TARGET_CHAR_BIT,
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0, "<?type?>", objfile);
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warning ("internal error: no Pascal fundamental type %d", typeid);
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break;
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case FT_VOID:
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type = init_type (TYPE_CODE_VOID,
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TARGET_CHAR_BIT / TARGET_CHAR_BIT,
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0, "void", objfile);
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break;
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case FT_CHAR:
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type = init_type (TYPE_CODE_INT,
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TARGET_CHAR_BIT / TARGET_CHAR_BIT,
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0, "char", objfile);
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break;
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case FT_SIGNED_CHAR:
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type = init_type (TYPE_CODE_INT,
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TARGET_CHAR_BIT / TARGET_CHAR_BIT,
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0, "shortint", objfile);
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break;
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case FT_UNSIGNED_CHAR:
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type = init_type (TYPE_CODE_INT,
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TARGET_CHAR_BIT / TARGET_CHAR_BIT,
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TYPE_FLAG_UNSIGNED, "byte", objfile);
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break;
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case FT_SHORT:
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type = init_type (TYPE_CODE_INT,
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TARGET_SHORT_BIT / TARGET_CHAR_BIT,
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0, "integer", objfile);
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break;
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case FT_SIGNED_SHORT:
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type = init_type (TYPE_CODE_INT,
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TARGET_SHORT_BIT / TARGET_CHAR_BIT,
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0, "integer", objfile); /* FIXME-fnf */
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break;
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case FT_UNSIGNED_SHORT:
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type = init_type (TYPE_CODE_INT,
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TARGET_SHORT_BIT / TARGET_CHAR_BIT,
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TYPE_FLAG_UNSIGNED, "word", objfile);
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break;
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case FT_INTEGER:
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type = init_type (TYPE_CODE_INT,
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TARGET_INT_BIT / TARGET_CHAR_BIT,
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0, "longint", objfile);
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break;
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case FT_SIGNED_INTEGER:
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type = init_type (TYPE_CODE_INT,
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TARGET_INT_BIT / TARGET_CHAR_BIT,
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0, "longint", objfile); /* FIXME -fnf */
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break;
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case FT_UNSIGNED_INTEGER:
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type = init_type (TYPE_CODE_INT,
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TARGET_INT_BIT / TARGET_CHAR_BIT,
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TYPE_FLAG_UNSIGNED, "cardinal", objfile);
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break;
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case FT_LONG:
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type = init_type (TYPE_CODE_INT,
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TARGET_LONG_BIT / TARGET_CHAR_BIT,
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0, "long", objfile);
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break;
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case FT_SIGNED_LONG:
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type = init_type (TYPE_CODE_INT,
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TARGET_LONG_BIT / TARGET_CHAR_BIT,
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0, "long", objfile); /* FIXME -fnf */
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break;
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case FT_UNSIGNED_LONG:
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type = init_type (TYPE_CODE_INT,
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TARGET_LONG_BIT / TARGET_CHAR_BIT,
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TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
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break;
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case FT_LONG_LONG:
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type = init_type (TYPE_CODE_INT,
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TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
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0, "long long", objfile);
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break;
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case FT_SIGNED_LONG_LONG:
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type = init_type (TYPE_CODE_INT,
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TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
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0, "signed long long", objfile);
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break;
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case FT_UNSIGNED_LONG_LONG:
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type = init_type (TYPE_CODE_INT,
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TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
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TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
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break;
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case FT_FLOAT:
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type = init_type (TYPE_CODE_FLT,
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TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
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0, "float", objfile);
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break;
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case FT_DBL_PREC_FLOAT:
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type = init_type (TYPE_CODE_FLT,
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TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
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0, "double", objfile);
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break;
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case FT_EXT_PREC_FLOAT:
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type = init_type (TYPE_CODE_FLT,
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TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
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0, "extended", objfile);
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break;
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}
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return (type);
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}
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/* Table mapping opcodes into strings for printing operators
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and precedences of the operators. */
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const struct op_print pascal_op_print_tab[] =
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{
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{",", BINOP_COMMA, PREC_COMMA, 0},
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{":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
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{"or", BINOP_BITWISE_IOR, PREC_BITWISE_IOR, 0},
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{"xor", BINOP_BITWISE_XOR, PREC_BITWISE_XOR, 0},
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{"and", BINOP_BITWISE_AND, PREC_BITWISE_AND, 0},
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{"=", BINOP_EQUAL, PREC_EQUAL, 0},
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{"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
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{"<=", BINOP_LEQ, PREC_ORDER, 0},
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{">=", BINOP_GEQ, PREC_ORDER, 0},
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{">", BINOP_GTR, PREC_ORDER, 0},
|
|||
|
|
{"<", BINOP_LESS, PREC_ORDER, 0},
|
|||
|
|
{"shr", BINOP_RSH, PREC_SHIFT, 0},
|
|||
|
|
{"shl", BINOP_LSH, PREC_SHIFT, 0},
|
|||
|
|
{"+", BINOP_ADD, PREC_ADD, 0},
|
|||
|
|
{"-", BINOP_SUB, PREC_ADD, 0},
|
|||
|
|
{"*", BINOP_MUL, PREC_MUL, 0},
|
|||
|
|
{"/", BINOP_DIV, PREC_MUL, 0},
|
|||
|
|
{"div", BINOP_INTDIV, PREC_MUL, 0},
|
|||
|
|
{"mod", BINOP_REM, PREC_MUL, 0},
|
|||
|
|
{"@", BINOP_REPEAT, PREC_REPEAT, 0},
|
|||
|
|
{"-", UNOP_NEG, PREC_PREFIX, 0},
|
|||
|
|
{"not", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
|
|||
|
|
{"^", UNOP_IND, PREC_SUFFIX, 1},
|
|||
|
|
{"@", UNOP_ADDR, PREC_PREFIX, 0},
|
|||
|
|
{"sizeof", UNOP_SIZEOF, PREC_PREFIX, 0},
|
|||
|
|
{NULL, 0, 0, 0}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
struct type **const /* CONST_PTR v 4.17 */ (pascal_builtin_types[]) =
|
|||
|
|
{
|
|||
|
|
&builtin_type_int,
|
|||
|
|
&builtin_type_long,
|
|||
|
|
&builtin_type_short,
|
|||
|
|
&builtin_type_char,
|
|||
|
|
&builtin_type_float,
|
|||
|
|
&builtin_type_double,
|
|||
|
|
&builtin_type_void,
|
|||
|
|
&builtin_type_long_long,
|
|||
|
|
&builtin_type_signed_char,
|
|||
|
|
&builtin_type_unsigned_char,
|
|||
|
|
&builtin_type_unsigned_short,
|
|||
|
|
&builtin_type_unsigned_int,
|
|||
|
|
&builtin_type_unsigned_long,
|
|||
|
|
&builtin_type_unsigned_long_long,
|
|||
|
|
&builtin_type_long_double,
|
|||
|
|
&builtin_type_complex,
|
|||
|
|
&builtin_type_double_complex,
|
|||
|
|
0
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
const struct language_defn pascal_language_defn =
|
|||
|
|
{
|
|||
|
|
"pascal", /* Language name */
|
|||
|
|
language_pascal,
|
|||
|
|
pascal_builtin_types,
|
|||
|
|
range_check_on,
|
|||
|
|
type_check_on,
|
|||
|
|
pascal_parse,
|
|||
|
|
pascal_error,
|
|||
|
|
evaluate_subexp_standard,
|
|||
|
|
pascal_printchar, /* Print a character constant */
|
|||
|
|
pascal_printstr, /* Function to print string constant */
|
|||
|
|
pascal_emit_char, /* Print a single char */
|
|||
|
|
pascal_create_fundamental_type, /* Create fundamental type in this language */
|
|||
|
|
pascal_print_type, /* Print a type using appropriate syntax */
|
|||
|
|
pascal_val_print, /* Print a value using appropriate syntax */
|
|||
|
|
pascal_value_print, /* Print a top-level value */
|
|||
|
|
{"", "%", "b", ""}, /* Binary format info */
|
|||
|
|
{"0%lo", "0", "o", ""}, /* Octal format info */
|
|||
|
|
{"%ld", "", "d", ""}, /* Decimal format info */
|
|||
|
|
{"$%lx", "$", "x", ""}, /* Hex format info */
|
|||
|
|
pascal_op_print_tab, /* expression operators for printing */
|
|||
|
|
1, /* c-style arrays */
|
|||
|
|
0, /* String lower bound */
|
|||
|
|
&builtin_type_char, /* Type of string elements */
|
|||
|
|
LANG_MAGIC
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
void
|
|||
|
|
_initialize_pascal_language ()
|
|||
|
|
{
|
|||
|
|
add_language (&pascal_language_defn);
|
|||
|
|
}
|