binutils-gdb/gdb/f-lang.c

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/* Fortran language support routines for GDB, the GNU debugger.
Copyright (C) 1993-2015 Free Software Foundation, Inc.
Contributed by Motorola. Adapted from the C parser by Farooq Butt
(fmbutt@engage.sps.mot.com).
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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "varobj.h"
#include "f-lang.h"
#include "valprint.h"
#include "value.h"
#include "cp-support.h"
#include "charset.h"
#include "c-lang.h"
/* Local functions */
extern void _initialize_f_language (void);
static void f_printchar (int c, struct type *type, struct ui_file * stream);
static void f_emit_char (int c, struct type *type,
struct ui_file * stream, int quoter);
/* Return the encoding that should be used for the character type
TYPE. */
static const char *
f_get_encoding (struct type *type)
{
const char *encoding;
switch (TYPE_LENGTH (type))
{
case 1:
encoding = target_charset (get_type_arch (type));
break;
case 4:
if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
encoding = "UTF-32BE";
else
encoding = "UTF-32LE";
break;
default:
error (_("unrecognized character type"));
}
return encoding;
}
/* 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 F77 version. */
static void
f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
{
const char *encoding = f_get_encoding (type);
generic_emit_char (c, type, stream, quoter, encoding);
}
/* Implementation of la_printchar. */
static void
f_printchar (int c, struct type *type, struct ui_file *stream)
{
fputs_filtered ("'", stream);
LA_EMIT_CHAR (c, type, 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 F77 version. */
static void
f_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)
{
const char *type_encoding = f_get_encoding (type);
if (TYPE_LENGTH (type) == 4)
fputs_filtered ("4_", stream);
if (!encoding || !*encoding)
encoding = type_encoding;
generic_printstr (stream, type, string, length, encoding,
force_ellipses, '\'', 0, options);
}
/* Table of operators and their precedences for printing expressions. */
static const struct op_print f_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},
{".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
{".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
{".LE.", BINOP_LEQ, PREC_ORDER, 0},
{".GE.", BINOP_GEQ, PREC_ORDER, 0},
{".GT.", BINOP_GTR, PREC_ORDER, 0},
{".LT.", BINOP_LESS, PREC_ORDER, 0},
{"**", UNOP_IND, PREC_PREFIX, 0},
{"@", BINOP_REPEAT, PREC_REPEAT, 0},
{NULL, 0, 0, 0}
};
enum f_primitive_types {
f_primitive_type_character,
f_primitive_type_logical,
f_primitive_type_logical_s1,
f_primitive_type_logical_s2,
f_primitive_type_logical_s8,
f_primitive_type_integer,
f_primitive_type_integer_s2,
f_primitive_type_real,
f_primitive_type_real_s8,
f_primitive_type_real_s16,
f_primitive_type_complex_s8,
f_primitive_type_complex_s16,
f_primitive_type_void,
nr_f_primitive_types
};
static void
f_language_arch_info (struct gdbarch *gdbarch,
struct language_arch_info *lai)
{
const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
lai->string_char_type = builtin->builtin_character;
lai->primitive_type_vector
= GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
struct type *);
lai->primitive_type_vector [f_primitive_type_character]
= builtin->builtin_character;
lai->primitive_type_vector [f_primitive_type_logical]
= builtin->builtin_logical;
lai->primitive_type_vector [f_primitive_type_logical_s1]
= builtin->builtin_logical_s1;
lai->primitive_type_vector [f_primitive_type_logical_s2]
= builtin->builtin_logical_s2;
lai->primitive_type_vector [f_primitive_type_logical_s8]
= builtin->builtin_logical_s8;
lai->primitive_type_vector [f_primitive_type_real]
= builtin->builtin_real;
lai->primitive_type_vector [f_primitive_type_real_s8]
= builtin->builtin_real_s8;
lai->primitive_type_vector [f_primitive_type_real_s16]
= builtin->builtin_real_s16;
lai->primitive_type_vector [f_primitive_type_complex_s8]
= builtin->builtin_complex_s8;
lai->primitive_type_vector [f_primitive_type_complex_s16]
= builtin->builtin_complex_s16;
lai->primitive_type_vector [f_primitive_type_void]
= builtin->builtin_void;
lai->bool_type_symbol = "logical";
lai->bool_type_default = builtin->builtin_logical_s2;
}
/* Remove the modules separator :: from the default break list. */
static char *
f_word_break_characters (void)
{
static char *retval;
if (!retval)
{
char *s;
retval = xstrdup (default_word_break_characters ());
s = strchr (retval, ':');
if (s)
{
char *last_char = &s[strlen (s) - 1];
*s = *last_char;
*last_char = 0;
}
}
return retval;
}
/* Consider the modules separator :: as a valid symbol name character
class. */
static VEC (char_ptr) *
f_make_symbol_completion_list (const char *text, const char *word,
enum type_code code)
{
return default_make_symbol_completion_list_break_on (text, word, ":", code);
}
const struct language_defn f_language_defn =
{
"fortran",
"Fortran",
language_fortran,
range_check_on,
case_sensitive_off,
array_column_major,
macro_expansion_no,
&exp_descriptor_standard,
f_parse, /* parser */
f_error, /* parser error function */
null_post_parser,
f_printchar, /* Print character constant */
f_printstr, /* function to print string constant */
f_emit_char, /* Function to print a single character */
f_print_type, /* Print a type using appropriate syntax */
default_print_typedef, /* Print a typedef using appropriate syntax */
f_val_print, /* Print a value using appropriate syntax */
c_value_print, /* FIXME */
default_read_var_value, /* la_read_var_value */
NULL, /* Language specific skip_trampoline */
NULL, /* name_of_this */
cp_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 */
f_op_print_tab, /* expression operators for printing */
0, /* arrays are first-class (not c-style) */
1, /* String lower bound */
f_word_break_characters,
f_make_symbol_completion_list,
f_language_arch_info,
default_print_array_index,
default_pass_by_reference,
default_get_string,
NULL, /* la_get_symbol_name_cmp */
iterate_over_symbols,
&default_varobj_ops,
NULL,
NULL,
LANG_MAGIC
};
static void *
build_fortran_types (struct gdbarch *gdbarch)
{
struct builtin_f_type *builtin_f_type
= GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
builtin_f_type->builtin_void
= arch_type (gdbarch, TYPE_CODE_VOID, 1, "VOID");
builtin_f_type->builtin_character
= arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
builtin_f_type->builtin_logical_s1
= arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
builtin_f_type->builtin_integer_s2
= arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
"integer*2");
builtin_f_type->builtin_logical_s2
= arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
"logical*2");
builtin_f_type->builtin_logical_s8
= arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
"logical*8");
builtin_f_type->builtin_integer
= arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
"integer");
builtin_f_type->builtin_logical
= arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
"logical*4");
builtin_f_type->builtin_real
= arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
"real", NULL);
builtin_f_type->builtin_real_s8
= arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
"real*8", NULL);
builtin_f_type->builtin_real_s16
= arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
"real*16", NULL);
builtin_f_type->builtin_complex_s8
= arch_complex_type (gdbarch, "complex*8",
builtin_f_type->builtin_real);
builtin_f_type->builtin_complex_s16
= arch_complex_type (gdbarch, "complex*16",
builtin_f_type->builtin_real_s8);
builtin_f_type->builtin_complex_s32
= arch_complex_type (gdbarch, "complex*32",
builtin_f_type->builtin_real_s16);
return builtin_f_type;
}
static struct gdbarch_data *f_type_data;
const struct builtin_f_type *
builtin_f_type (struct gdbarch *gdbarch)
{
return gdbarch_data (gdbarch, f_type_data);
}
void
_initialize_f_language (void)
{
f_type_data = gdbarch_data_register_post_init (build_fortran_types);
add_language (&f_language_defn);
}