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https://sourceware.org/git/binutils-gdb.git
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473 lines
14 KiB
C
473 lines
14 KiB
C
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/* Modula 2 language support routines for GDB, the GNU debugger.
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Copyright 1992 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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#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 "m2-lang.h"
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#include "c-lang.h"
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static struct type *m2_create_fundamental_type PARAMS ((struct objfile *, int));
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static void m2_printstr PARAMS ((GDB_FILE *stream, char *string, unsigned int length, int width, int force_ellipses));
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static void m2_printchar PARAMS ((int, GDB_FILE *));
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static void m2_emit_char PARAMS ((int, GDB_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 whose delimiter is QUOTER. Note that that format for printing
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characters and strings is language specific.
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FIXME: This is a copy of the same function from c-exp.y. It should
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be replaced with a true Modula version.
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*/
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static void
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m2_emit_char (c, stream, quoter)
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register int c;
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GDB_FILE *stream;
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int quoter;
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{
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c &= 0xFF; /* Avoid sign bit follies */
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if (PRINT_LITERAL_FORM (c))
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{
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if (c == '\\' || c == quoter)
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{
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fputs_filtered ("\\", stream);
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}
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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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switch (c)
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{
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case '\n':
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fputs_filtered ("\\n", stream);
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break;
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case '\b':
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fputs_filtered ("\\b", stream);
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break;
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case '\t':
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fputs_filtered ("\\t", stream);
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break;
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case '\f':
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fputs_filtered ("\\f", stream);
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break;
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case '\r':
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fputs_filtered ("\\r", stream);
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break;
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case '\033':
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fputs_filtered ("\\e", stream);
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break;
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case '\007':
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fputs_filtered ("\\a", stream);
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break;
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default:
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fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
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break;
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}
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}
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}
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/* FIXME: This is a copy of the same function from c-exp.y. It should
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be replaced with a true Modula version. */
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static void
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m2_printchar (c, stream)
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int c;
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GDB_FILE *stream;
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{
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fputs_filtered ("'", stream);
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LA_EMIT_CHAR (c, stream, '\'');
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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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FIXME: This is a copy of the same function from c-exp.y. It should
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be replaced with a true Modula version. */
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static void
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m2_printstr (stream, string, length, width, force_ellipses)
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GDB_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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extern int repeat_count_threshold;
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extern int print_max;
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if (length == 0)
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{
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fputs_filtered ("\"\"", gdb_stdout);
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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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m2_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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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 = 1;
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}
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LA_EMIT_CHAR (string[i], stream, '"');
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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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/* FIXME: This is a copy of c_create_fundamental_type(), before
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all the non-C types were stripped from it. Needs to be fixed
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by an experienced Modula programmer. */
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static struct type *
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m2_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 Modula 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_BOOLEAN:
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type = init_type (TYPE_CODE_BOOL,
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TARGET_CHAR_BIT / TARGET_CHAR_BIT,
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TYPE_FLAG_UNSIGNED, "boolean", objfile);
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break;
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case FT_STRING:
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type = init_type (TYPE_CODE_STRING,
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TARGET_CHAR_BIT / TARGET_CHAR_BIT,
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0, "string", 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, "signed char", 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, "unsigned char", 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, "short", 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, "short", 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, "unsigned short", 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, "int", 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, "int", 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, "unsigned int", objfile);
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break;
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case FT_FIXED_DECIMAL:
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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, "fixed decimal", 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_FLOAT_DECIMAL:
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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, "floating decimal", 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, "long double", objfile);
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break;
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case FT_COMPLEX:
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type = init_type (TYPE_CODE_COMPLEX,
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2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
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0, "complex", objfile);
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TYPE_TARGET_TYPE (type)
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= m2_create_fundamental_type (objfile, FT_FLOAT);
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break;
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case FT_DBL_PREC_COMPLEX:
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type = init_type (TYPE_CODE_COMPLEX,
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2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
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0, "double complex", objfile);
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TYPE_TARGET_TYPE (type)
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= m2_create_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
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break;
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case FT_EXT_PREC_COMPLEX:
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type = init_type (TYPE_CODE_COMPLEX,
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2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
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0, "long double complex", objfile);
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TYPE_TARGET_TYPE (type)
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|
|
= m2_create_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
return (type);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
/* Table of operators and their precedences for printing expressions. */
|
|||
|
|
|
|||
|
|
static const struct op_print m2_op_print_tab[] = {
|
|||
|
|
{"+", BINOP_ADD, PREC_ADD, 0},
|
|||
|
|
{"+", UNOP_PLUS, PREC_PREFIX, 0},
|
|||
|
|
{"-", BINOP_SUB, PREC_ADD, 0},
|
|||
|
|
{"-", UNOP_NEG, PREC_PREFIX, 0},
|
|||
|
|
{"*", BINOP_MUL, PREC_MUL, 0},
|
|||
|
|
{"/", BINOP_DIV, PREC_MUL, 0},
|
|||
|
|
{"DIV", BINOP_INTDIV, PREC_MUL, 0},
|
|||
|
|
{"MOD", BINOP_REM, PREC_MUL, 0},
|
|||
|
|
{":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
|
|||
|
|
{"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
|
|||
|
|
{"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
|
|||
|
|
{"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
|
|||
|
|
{"=", BINOP_EQUAL, PREC_EQUAL, 0},
|
|||
|
|
{"<>", BINOP_NOTEQUAL, PREC_EQUAL, 0},
|
|||
|
|
{"<=", BINOP_LEQ, PREC_ORDER, 0},
|
|||
|
|
{">=", BINOP_GEQ, PREC_ORDER, 0},
|
|||
|
|
{">", BINOP_GTR, PREC_ORDER, 0},
|
|||
|
|
{"<", BINOP_LESS, PREC_ORDER, 0},
|
|||
|
|
{"^", UNOP_IND, PREC_PREFIX, 0},
|
|||
|
|
{"@", BINOP_REPEAT, PREC_REPEAT, 0},
|
|||
|
|
{"CAP", UNOP_CAP, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"CHR", UNOP_CHR, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"ORD", UNOP_ORD, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"FLOAT",UNOP_FLOAT, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"HIGH", UNOP_HIGH, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"MAX", UNOP_MAX, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"MIN", UNOP_MIN, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"ODD", UNOP_ODD, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{"TRUNC", UNOP_TRUNC, PREC_BUILTIN_FUNCTION, 0},
|
|||
|
|
{NULL, 0, 0, 0}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/* The built-in types of Modula-2. */
|
|||
|
|
|
|||
|
|
struct type *builtin_type_m2_char;
|
|||
|
|
struct type *builtin_type_m2_int;
|
|||
|
|
struct type *builtin_type_m2_card;
|
|||
|
|
struct type *builtin_type_m2_real;
|
|||
|
|
struct type *builtin_type_m2_bool;
|
|||
|
|
|
|||
|
|
struct type ** CONST_PTR (m2_builtin_types[]) =
|
|||
|
|
{
|
|||
|
|
&builtin_type_m2_char,
|
|||
|
|
&builtin_type_m2_int,
|
|||
|
|
&builtin_type_m2_card,
|
|||
|
|
&builtin_type_m2_real,
|
|||
|
|
&builtin_type_m2_bool,
|
|||
|
|
0
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
const struct language_defn m2_language_defn = {
|
|||
|
|
"modula-2",
|
|||
|
|
language_m2,
|
|||
|
|
m2_builtin_types,
|
|||
|
|
range_check_on,
|
|||
|
|
type_check_on,
|
|||
|
|
m2_parse, /* parser */
|
|||
|
|
m2_error, /* parser error function */
|
|||
|
|
evaluate_subexp_standard,
|
|||
|
|
m2_printchar, /* Print character constant */
|
|||
|
|
m2_printstr, /* function to print string constant */
|
|||
|
|
m2_emit_char, /* Function to print a single character */
|
|||
|
|
m2_create_fundamental_type, /* Create fundamental type in this language */
|
|||
|
|
m2_print_type, /* Print a type using appropriate syntax */
|
|||
|
|
m2_val_print, /* Print a value using appropriate syntax */
|
|||
|
|
c_value_print, /* Print a top-level value */
|
|||
|
|
{"", "", "", ""}, /* Binary format info */
|
|||
|
|
{"%loB", "", "o", "B"}, /* Octal format info */
|
|||
|
|
{"%ld", "", "d", ""}, /* Decimal format info */
|
|||
|
|
{"0%lXH", "0", "X", "H"}, /* Hex format info */
|
|||
|
|
m2_op_print_tab, /* expression operators for printing */
|
|||
|
|
0, /* arrays are first-class (not c-style) */
|
|||
|
|
0, /* String lower bound */
|
|||
|
|
&builtin_type_m2_char, /* Type of string elements */
|
|||
|
|
LANG_MAGIC
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/* Initialization for Modula-2 */
|
|||
|
|
|
|||
|
|
void
|
|||
|
|
_initialize_m2_language ()
|
|||
|
|
{
|
|||
|
|
/* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
|
|||
|
|
builtin_type_m2_int =
|
|||
|
|
init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
|||
|
|
0,
|
|||
|
|
"INTEGER", (struct objfile *) NULL);
|
|||
|
|
builtin_type_m2_card =
|
|||
|
|
init_type (TYPE_CODE_INT, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
|||
|
|
TYPE_FLAG_UNSIGNED,
|
|||
|
|
"CARDINAL", (struct objfile *) NULL);
|
|||
|
|
builtin_type_m2_real =
|
|||
|
|
init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
|
|||
|
|
0,
|
|||
|
|
"REAL", (struct objfile *) NULL);
|
|||
|
|
builtin_type_m2_char =
|
|||
|
|
init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
|
|||
|
|
TYPE_FLAG_UNSIGNED,
|
|||
|
|
"CHAR", (struct objfile *) NULL);
|
|||
|
|
builtin_type_m2_bool =
|
|||
|
|
init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
|
|||
|
|
TYPE_FLAG_UNSIGNED,
|
|||
|
|
"BOOLEAN", (struct objfile *) NULL);
|
|||
|
|
|
|||
|
|
add_language (&m2_language_defn);
|
|||
|
|
}
|