/* Modula 2 language support routines for GDB, the GNU debugger.
- Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2002, 2003, 2004,
- 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 1992-1996, 1998, 2000, 2002-2005, 2007-2012 Free
+ Software Foundation, Inc.
This file is part of GDB.
#include "valprint.h"
extern void _initialize_m2_language (void);
-static struct type *m2_create_fundamental_type (struct objfile *, int);
-static void m2_printchar (int, struct ui_file *);
-static void m2_emit_char (int, struct ui_file *, int);
+static void m2_printchar (int, struct type *, struct ui_file *);
+static void m2_emit_char (int, struct type *, struct ui_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.
- */
+ be replaced with a true Modula version. */
static void
-m2_emit_char (int c, struct ui_file *stream, int quoter)
+m2_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
{
- c &= 0xFF; /* Avoid sign bit follies */
+ c &= 0xFF; /* Avoid sign bit follies. */
if (PRINT_LITERAL_FORM (c))
{
}
/* FIXME: This is a copy of the same function from c-exp.y. It should
- be replaced with a true Modula version. */
+ be replaced with a true Modula version. */
static void
-m2_printchar (int c, struct ui_file *stream)
+m2_printchar (int c, struct type *type, struct ui_file *stream)
{
fputs_filtered ("'", stream);
- LA_EMIT_CHAR (c, stream, '\'');
+ LA_EMIT_CHAR (c, type, stream, '\'');
fputs_filtered ("'", stream);
}
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. */
+ be replaced with a true Modula version. */
static void
-m2_printstr (struct ui_file *stream, const gdb_byte *string,
- unsigned int length, int width, int force_ellipses)
+m2_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
+ unsigned int length, const char *encoding, int force_ellipses,
+ const struct value_print_options *options)
{
unsigned int i;
unsigned int things_printed = 0;
return;
}
- for (i = 0; i < length && things_printed < print_max; ++i)
+ for (i = 0; i < length && things_printed < options->print_max; ++i)
{
/* Position of the character we are examining
to see whether it is repeated. */
++reps;
}
- if (reps > repeat_count_threshold)
+ if (reps > options->repeat_count_threshold)
{
if (in_quotes)
{
- if (inspect_it)
+ if (options->inspect_it)
fputs_filtered ("\\\", ", stream);
else
fputs_filtered ("\", ", stream);
in_quotes = 0;
}
- m2_printchar (string[i], stream);
+ m2_printchar (string[i], type, stream);
fprintf_filtered (stream, " <repeats %u times>", reps);
i = rep1 - 1;
- things_printed += repeat_count_threshold;
+ things_printed += options->repeat_count_threshold;
need_comma = 1;
}
else
{
if (!in_quotes)
{
- if (inspect_it)
+ if (options->inspect_it)
fputs_filtered ("\\\"", stream);
else
fputs_filtered ("\"", stream);
in_quotes = 1;
}
- LA_EMIT_CHAR (string[i], stream, '"');
+ LA_EMIT_CHAR (string[i], type, stream, '"');
++things_printed;
}
}
/* Terminate the quotes if necessary. */
if (in_quotes)
{
- if (inspect_it)
+ if (options->inspect_it)
fputs_filtered ("\\\"", stream);
else
fputs_filtered ("\"", stream);
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 (struct objfile *objfile, int typeid)
+static struct value *
+evaluate_subexp_modula2 (struct type *expect_type, struct expression *exp,
+ int *pos, enum noside noside)
{
- struct type *type = NULL;
+ enum exp_opcode op = exp->elts[*pos].opcode;
+ struct value *arg1;
+ struct value *arg2;
+ struct type *type;
- switch (typeid)
+ switch (op)
{
+ case UNOP_HIGH:
+ (*pos)++;
+ arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
+
+ if (noside == EVAL_SKIP || noside == EVAL_AVOID_SIDE_EFFECTS)
+ return arg1;
+ else
+ {
+ arg1 = coerce_ref (arg1);
+ type = check_typedef (value_type (arg1));
+
+ if (m2_is_unbounded_array (type))
+ {
+ struct value *temp = arg1;
+
+ type = TYPE_FIELD_TYPE (type, 1);
+ /* i18n: Do not translate the "_m2_high" part! */
+ arg1 = value_struct_elt (&temp, NULL, "_m2_high", NULL,
+ _("unbounded structure "
+ "missing _m2_high field"));
+
+ if (value_type (arg1) != type)
+ arg1 = value_cast (type, arg1);
+ }
+ }
+ return arg1;
+
+ case BINOP_SUBSCRIPT:
+ (*pos)++;
+ arg1 = evaluate_subexp_with_coercion (exp, pos, noside);
+ arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
+ if (noside == EVAL_SKIP)
+ goto nosideret;
+ /* If the user attempts to subscript something that is not an
+ array or pointer type (like a plain int variable for example),
+ then report this as an error. */
+
+ arg1 = coerce_ref (arg1);
+ type = check_typedef (value_type (arg1));
+
+ if (m2_is_unbounded_array (type))
+ {
+ struct value *temp = arg1;
+ type = TYPE_FIELD_TYPE (type, 0);
+ if (type == NULL || (TYPE_CODE (type) != TYPE_CODE_PTR))
+ {
+ warning (_("internal error: unbounded "
+ "array structure is unknown"));
+ return evaluate_subexp_standard (expect_type, exp, pos, noside);
+ }
+ /* i18n: Do not translate the "_m2_contents" part! */
+ arg1 = value_struct_elt (&temp, NULL, "_m2_contents", NULL,
+ _("unbounded structure "
+ "missing _m2_contents field"));
+
+ if (value_type (arg1) != type)
+ arg1 = value_cast (type, arg1);
+
+ check_typedef (value_type (arg1));
+ return value_ind (value_ptradd (arg1, value_as_long (arg2)));
+ }
+ else
+ if (TYPE_CODE (type) != TYPE_CODE_ARRAY)
+ {
+ if (TYPE_NAME (type))
+ error (_("cannot subscript something of type `%s'"),
+ TYPE_NAME (type));
+ else
+ error (_("cannot subscript requested type"));
+ }
+
+ if (noside == EVAL_AVOID_SIDE_EFFECTS)
+ return value_zero (TYPE_TARGET_TYPE (type), VALUE_LVAL (arg1));
+ else
+ return value_subscript (arg1, value_as_long (arg2));
+
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,
- gdbarch_int_bit (current_gdbarch) / 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,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "short", objfile);
- break;
- case FT_SIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "short", objfile); /* FIXME-fnf */
- break;
- case FT_UNSIGNED_SHORT:
- type = init_type (TYPE_CODE_INT,
- gdbarch_short_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
- break;
- case FT_INTEGER:
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "int", objfile);
- break;
- case FT_SIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "int", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_INTEGER:
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
- break;
- case FT_FIXED_DECIMAL:
- type = init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "fixed decimal", objfile);
- break;
- case FT_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "long", objfile);
- break;
- case FT_SIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "long", objfile); /* FIXME -fnf */
- break;
- case FT_UNSIGNED_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
- break;
- case FT_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "long long", objfile);
- break;
- case FT_SIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "signed long long", objfile);
- break;
- case FT_UNSIGNED_LONG_LONG:
- type = init_type (TYPE_CODE_INT,
- gdbarch_long_long_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
- break;
- case FT_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "float", objfile);
- break;
- case FT_DBL_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "double", objfile);
- break;
- case FT_FLOAT_DECIMAL:
- type = init_type (TYPE_CODE_FLT,
- gdbarch_double_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "floating decimal", objfile);
- break;
- case FT_EXT_PREC_FLOAT:
- type = init_type (TYPE_CODE_FLT,
- gdbarch_long_double_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "long double", objfile);
- break;
- case FT_COMPLEX:
- type = init_type (TYPE_CODE_COMPLEX,
- 2 * gdbarch_float_bit (current_gdbarch)
- / 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 * gdbarch_double_bit (current_gdbarch)
- / 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 * gdbarch_long_double_bit (current_gdbarch)
- / TARGET_CHAR_BIT,
- 0, "long double complex", objfile);
- TYPE_TARGET_TYPE (type)
- = m2_create_fundamental_type (objfile, FT_EXT_PREC_FLOAT);
- break;
+ return evaluate_subexp_standard (expect_type, exp, pos, noside);
}
- return (type);
+
+ nosideret:
+ return value_from_longest (builtin_type (exp->gdbarch)->builtin_int, 1);
}
\f
= builtin->builtin_real;
lai->primitive_type_vector [m2_primitive_type_bool]
= builtin->builtin_bool;
+
+ lai->bool_type_symbol = "BOOLEAN";
+ lai->bool_type_default = builtin->builtin_bool;
}
+const struct exp_descriptor exp_descriptor_modula2 =
+{
+ print_subexp_standard,
+ operator_length_standard,
+ operator_check_standard,
+ op_name_standard,
+ dump_subexp_body_standard,
+ evaluate_subexp_modula2
+};
+
const struct language_defn m2_language_defn =
{
"modula-2",
language_m2,
- NULL,
range_check_on,
- type_check_on,
case_sensitive_on,
array_row_major,
- &exp_descriptor_standard,
+ macro_expansion_no,
+ &exp_descriptor_modula2,
m2_parse, /* parser */
m2_error, /* parser error function */
null_post_parser,
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_print_typedef, /* Print a typedef using appropriate syntax */
m2_val_print, /* Print a value using appropriate syntax */
c_value_print, /* Print a top-level value */
+ default_read_var_value, /* la_read_var_value */
NULL, /* Language specific skip_trampoline */
- value_of_this, /* value_of_this */
+ NULL, /* name_of_this */
basic_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
basic_lookup_transparent_type,/* lookup_transparent_type */
NULL, /* Language specific symbol demangler */
- NULL, /* Language specific class_name_from_physname */
+ NULL, /* Language specific
+ class_name_from_physname */
m2_op_print_tab, /* expression operators for printing */
0, /* arrays are first-class (not c-style) */
0, /* String lower bound */
- NULL,
default_word_break_characters,
+ default_make_symbol_completion_list,
m2_language_arch_info,
default_print_array_index,
default_pass_by_reference,
+ default_get_string,
+ NULL, /* la_get_symbol_name_cmp */
+ iterate_over_symbols,
LANG_MAGIC
};
= GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_m2_type);
/* Modula-2 "pervasive" types. NOTE: these can be redefined!!! */
- builtin_m2_type->builtin_int =
- init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0, "INTEGER", (struct objfile *) NULL);
- builtin_m2_type->builtin_card =
- init_type (TYPE_CODE_INT,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED,
- "CARDINAL", (struct objfile *) NULL);
- builtin_m2_type->builtin_real =
- init_type (TYPE_CODE_FLT,
- gdbarch_float_bit (current_gdbarch) / TARGET_CHAR_BIT,
- 0,
- "REAL", (struct objfile *) NULL);
- builtin_m2_type->builtin_char =
- init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED,
- "CHAR", (struct objfile *) NULL);
- builtin_m2_type->builtin_bool =
- init_type (TYPE_CODE_BOOL,
- gdbarch_int_bit (current_gdbarch) / TARGET_CHAR_BIT,
- TYPE_FLAG_UNSIGNED,
- "BOOLEAN", (struct objfile *) NULL);
+ builtin_m2_type->builtin_int
+ = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0, "INTEGER");
+ builtin_m2_type->builtin_card
+ = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 1, "CARDINAL");
+ builtin_m2_type->builtin_real
+ = arch_float_type (gdbarch, gdbarch_float_bit (gdbarch), "REAL", NULL);
+ builtin_m2_type->builtin_char
+ = arch_character_type (gdbarch, TARGET_CHAR_BIT, 1, "CHAR");
+ builtin_m2_type->builtin_bool
+ = arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1, "BOOLEAN");
return builtin_m2_type;
}