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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
commitc906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch)
treea0015aa5cedc19ccbab307251353a41722a3ae13 /gdb/m2-lang.c
parentcd946cff9ede3f30935803403f06f6ed30cad136 (diff)
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Initial creation of sourceware repositorygdb-4_18-branchpoint
Diffstat (limited to 'gdb/m2-lang.c')
-rw-r--r--gdb/m2-lang.c472
1 files changed, 472 insertions, 0 deletions
diff --git a/gdb/m2-lang.c b/gdb/m2-lang.c
new file mode 100644
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--- /dev/null
+++ b/gdb/m2-lang.c
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+/* Modula 2 language support routines for GDB, the GNU debugger.
+ Copyright 1992 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "expression.h"
+#include "parser-defs.h"
+#include "language.h"
+#include "m2-lang.h"
+#include "c-lang.h"
+
+static struct type *m2_create_fundamental_type PARAMS ((struct objfile *, int));
+static void m2_printstr PARAMS ((GDB_FILE *stream, char *string, unsigned int length, int width, int force_ellipses));
+static void m2_printchar PARAMS ((int, GDB_FILE *));
+static void m2_emit_char PARAMS ((int, GDB_FILE *, int));
+
+/* Print the character C on STREAM as part of the contents of a literal
+ string whose delimiter is QUOTER. Note that that format for printing
+ characters and strings is language specific.
+ FIXME: This is a copy of the same function from c-exp.y. It should
+ be replaced with a true Modula version.
+ */
+
+static void
+m2_emit_char (c, stream, quoter)
+ register int c;
+ GDB_FILE *stream;
+ int quoter;
+{
+
+ c &= 0xFF; /* Avoid sign bit follies */
+
+ if (PRINT_LITERAL_FORM (c))
+ {
+ if (c == '\\' || c == quoter)
+ {
+ fputs_filtered ("\\", stream);
+ }
+ fprintf_filtered (stream, "%c", c);
+ }
+ else
+ {
+ switch (c)
+ {
+ case '\n':
+ fputs_filtered ("\\n", stream);
+ break;
+ case '\b':
+ fputs_filtered ("\\b", stream);
+ break;
+ case '\t':
+ fputs_filtered ("\\t", stream);
+ break;
+ case '\f':
+ fputs_filtered ("\\f", stream);
+ break;
+ case '\r':
+ fputs_filtered ("\\r", stream);
+ break;
+ case '\033':
+ fputs_filtered ("\\e", stream);
+ break;
+ case '\007':
+ fputs_filtered ("\\a", stream);
+ break;
+ default:
+ fprintf_filtered (stream, "\\%.3o", (unsigned int) c);
+ break;
+ }
+ }
+}
+
+/* FIXME: This is a copy of the same function from c-exp.y. It should
+ be replaced with a true Modula version. */
+
+static void
+m2_printchar (c, stream)
+ int c;
+ GDB_FILE *stream;
+{
+ fputs_filtered ("'", stream);
+ LA_EMIT_CHAR (c, stream, '\'');
+ fputs_filtered ("'", stream);
+}
+
+/* Print the character string STRING, printing at most LENGTH characters.
+ Printing stops early if the number hits print_max; repeat counts
+ are printed as appropriate. Print ellipses at the end if we
+ had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
+ FIXME: This is a copy of the same function from c-exp.y. It should
+ be replaced with a true Modula version. */
+
+static void
+m2_printstr (stream, string, length, width, force_ellipses)
+ GDB_FILE *stream;
+ char *string;
+ unsigned int length;
+ int width;
+ int force_ellipses;
+{
+ register unsigned int i;
+ unsigned int things_printed = 0;
+ int in_quotes = 0;
+ int need_comma = 0;
+ extern int inspect_it;
+ extern int repeat_count_threshold;
+ extern int print_max;
+
+ if (length == 0)
+ {
+ fputs_filtered ("\"\"", gdb_stdout);
+ return;
+ }
+
+ for (i = 0; i < length && things_printed < print_max; ++i)
+ {
+ /* Position of the character we are examining
+ to see whether it is repeated. */
+ unsigned int rep1;
+ /* Number of repetitions we have detected so far. */
+ unsigned int reps;
+
+ QUIT;
+
+ if (need_comma)
+ {
+ fputs_filtered (", ", stream);
+ need_comma = 0;
+ }
+
+ rep1 = i + 1;
+ reps = 1;
+ while (rep1 < length && string[rep1] == string[i])
+ {
+ ++rep1;
+ ++reps;
+ }
+
+ if (reps > repeat_count_threshold)
+ {
+ if (in_quotes)
+ {
+ if (inspect_it)
+ fputs_filtered ("\\\", ", stream);
+ else
+ fputs_filtered ("\", ", stream);
+ in_quotes = 0;
+ }
+ m2_printchar (string[i], stream);
+ fprintf_filtered (stream, " <repeats %u times>", reps);
+ i = rep1 - 1;
+ things_printed += repeat_count_threshold;
+ need_comma = 1;
+ }
+ else
+ {
+ if (!in_quotes)
+ {
+ if (inspect_it)
+ fputs_filtered ("\\\"", stream);
+ else
+ fputs_filtered ("\"", stream);
+ in_quotes = 1;
+ }
+ LA_EMIT_CHAR (string[i], stream, '"');
+ ++things_printed;
+ }
+ }
+
+ /* Terminate the quotes if necessary. */
+ if (in_quotes)
+ {
+ if (inspect_it)
+ fputs_filtered ("\\\"", stream);
+ else
+ fputs_filtered ("\"", stream);
+ }
+
+ if (force_ellipses || i < length)
+ fputs_filtered ("...", stream);
+}
+
+/* FIXME: This is a copy of c_create_fundamental_type(), before
+ all the non-C types were stripped from it. Needs to be fixed
+ by an experienced Modula programmer. */
+
+static struct type *
+m2_create_fundamental_type (objfile, typeid)
+ struct objfile *objfile;
+ int typeid;
+{
+ register struct type *type = NULL;
+
+ switch (typeid)
+ {
+ default:
+ /* FIXME: For now, if we are asked to produce a type not in this
+ language, create the equivalent of a C integer type with the
+ name "<?type?>". When all the dust settles from the type
+ reconstruction work, this should probably become an error. */
+ type = init_type (TYPE_CODE_INT,
+ TARGET_INT_BIT / TARGET_CHAR_BIT,
+ 0, "<?type?>", objfile);
+ warning ("internal error: no Modula fundamental type %d", typeid);
+ break;
+ case FT_VOID:
+ type = init_type (TYPE_CODE_VOID,
+ TARGET_CHAR_BIT / TARGET_CHAR_BIT,
+ 0, "void", objfile);
+ break;
+ case FT_BOOLEAN:
+ type = init_type (TYPE_CODE_BOOL,
+ TARGET_CHAR_BIT / TARGET_CHAR_BIT,
+ TYPE_FLAG_UNSIGNED, "boolean", objfile);
+ break;
+ case FT_STRING:
+ type = init_type (TYPE_CODE_STRING,
+ TARGET_CHAR_BIT / TARGET_CHAR_BIT,
+ 0, "string", objfile);
+ break;
+ case FT_CHAR:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_CHAR_BIT / TARGET_CHAR_BIT,
+ 0, "char", objfile);
+ break;
+ case FT_SIGNED_CHAR:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_CHAR_BIT / TARGET_CHAR_BIT,
+ 0, "signed char", objfile);
+ break;
+ case FT_UNSIGNED_CHAR:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_CHAR_BIT / TARGET_CHAR_BIT,
+ TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
+ break;
+ case FT_SHORT:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_SHORT_BIT / TARGET_CHAR_BIT,
+ 0, "short", objfile);
+ break;
+ case FT_SIGNED_SHORT:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_SHORT_BIT / TARGET_CHAR_BIT,
+ 0, "short", objfile); /* FIXME-fnf */
+ break;
+ case FT_UNSIGNED_SHORT:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_SHORT_BIT / TARGET_CHAR_BIT,
+ TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
+ break;
+ case FT_INTEGER:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_INT_BIT / TARGET_CHAR_BIT,
+ 0, "int", objfile);
+ break;
+ case FT_SIGNED_INTEGER:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_INT_BIT / TARGET_CHAR_BIT,
+ 0, "int", objfile); /* FIXME -fnf */
+ break;
+ case FT_UNSIGNED_INTEGER:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_INT_BIT / TARGET_CHAR_BIT,
+ TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
+ break;
+ case FT_FIXED_DECIMAL:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_INT_BIT / TARGET_CHAR_BIT,
+ 0, "fixed decimal", objfile);
+ break;
+ case FT_LONG:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_LONG_BIT / TARGET_CHAR_BIT,
+ 0, "long", objfile);
+ break;
+ case FT_SIGNED_LONG:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_LONG_BIT / TARGET_CHAR_BIT,
+ 0, "long", objfile); /* FIXME -fnf */
+ break;
+ case FT_UNSIGNED_LONG:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_LONG_BIT / TARGET_CHAR_BIT,
+ TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
+ break;
+ case FT_LONG_LONG:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
+ 0, "long long", objfile);
+ break;
+ case FT_SIGNED_LONG_LONG:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
+ 0, "signed long long", objfile);
+ break;
+ case FT_UNSIGNED_LONG_LONG:
+ type = init_type (TYPE_CODE_INT,
+ TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
+ TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
+ break;
+ case FT_FLOAT:
+ type = init_type (TYPE_CODE_FLT,
+ TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
+ 0, "float", objfile);
+ break;
+ case FT_DBL_PREC_FLOAT:
+ type = init_type (TYPE_CODE_FLT,
+ TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
+ 0, "double", objfile);
+ break;
+ case FT_FLOAT_DECIMAL:
+ type = init_type (TYPE_CODE_FLT,
+ TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
+ 0, "floating decimal", objfile);
+ break;
+ case FT_EXT_PREC_FLOAT:
+ type = init_type (TYPE_CODE_FLT,
+ TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
+ 0, "long double", objfile);
+ break;
+ case FT_COMPLEX:
+ type = init_type (TYPE_CODE_COMPLEX,
+ 2 * TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
+ 0, "complex", objfile);
+ TYPE_TARGET_TYPE (type)
+ = m2_create_fundamental_type (objfile, FT_FLOAT);
+ break;
+ case FT_DBL_PREC_COMPLEX:
+ type = init_type (TYPE_CODE_COMPLEX,
+ 2 * TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
+ 0, "double complex", objfile);
+ TYPE_TARGET_TYPE (type)
+ = m2_create_fundamental_type (objfile, FT_DBL_PREC_FLOAT);
+ break;
+ case FT_EXT_PREC_COMPLEX:
+ type = init_type (TYPE_CODE_COMPLEX,
+ 2 * TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
+ 0, "long double complex", objfile);
+ TYPE_TARGET_TYPE (type)
+ = 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);
+}