374 lines
11 KiB
C
374 lines
11 KiB
C
/* Fortran language support routines for GDB, the GNU debugger.
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Copyright (C) 1993-2018 Free Software Foundation, Inc.
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Contributed by Motorola. Adapted from the C parser by Farooq Butt
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(fmbutt@engage.sps.mot.com).
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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 3 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, see <http://www.gnu.org/licenses/>. */
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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 "varobj.h"
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#include "f-lang.h"
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#include "valprint.h"
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#include "value.h"
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#include "cp-support.h"
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#include "charset.h"
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#include "c-lang.h"
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/* Local functions */
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static void f_printchar (int c, struct type *type, struct ui_file * stream);
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static void f_emit_char (int c, struct type *type,
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struct ui_file * stream, int quoter);
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/* Return the encoding that should be used for the character type
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TYPE. */
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static const char *
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f_get_encoding (struct type *type)
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{
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const char *encoding;
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switch (TYPE_LENGTH (type))
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{
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case 1:
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encoding = target_charset (get_type_arch (type));
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break;
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case 4:
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if (gdbarch_byte_order (get_type_arch (type)) == BFD_ENDIAN_BIG)
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encoding = "UTF-32BE";
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else
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encoding = "UTF-32LE";
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break;
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default:
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error (_("unrecognized character type"));
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}
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return encoding;
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}
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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 F77 version. */
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static void
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f_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
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{
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const char *encoding = f_get_encoding (type);
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generic_emit_char (c, type, stream, quoter, encoding);
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}
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/* Implementation of la_printchar. */
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static void
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f_printchar (int c, struct type *type, struct ui_file *stream)
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{
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fputs_filtered ("'", stream);
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LA_EMIT_CHAR (c, type, 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 F77 version. */
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static void
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f_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
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unsigned int length, const char *encoding, int force_ellipses,
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const struct value_print_options *options)
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{
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const char *type_encoding = f_get_encoding (type);
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if (TYPE_LENGTH (type) == 4)
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fputs_filtered ("4_", stream);
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if (!encoding || !*encoding)
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encoding = type_encoding;
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generic_printstr (stream, type, string, length, encoding,
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force_ellipses, '\'', 0, options);
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}
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/* Table of operators and their precedences for printing expressions. */
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static const struct op_print f_op_print_tab[] =
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{
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{"+", BINOP_ADD, PREC_ADD, 0},
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{"+", UNOP_PLUS, PREC_PREFIX, 0},
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{"-", BINOP_SUB, PREC_ADD, 0},
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{"-", UNOP_NEG, PREC_PREFIX, 0},
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{"*", BINOP_MUL, PREC_MUL, 0},
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{"/", BINOP_DIV, PREC_MUL, 0},
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{"DIV", BINOP_INTDIV, PREC_MUL, 0},
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{"MOD", BINOP_REM, PREC_MUL, 0},
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{"=", BINOP_ASSIGN, PREC_ASSIGN, 1},
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{".OR.", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
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{".AND.", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
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{".NOT.", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
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{".EQ.", BINOP_EQUAL, PREC_EQUAL, 0},
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{".NE.", BINOP_NOTEQUAL, PREC_EQUAL, 0},
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{".LE.", BINOP_LEQ, PREC_ORDER, 0},
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{".GE.", BINOP_GEQ, PREC_ORDER, 0},
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{".GT.", BINOP_GTR, PREC_ORDER, 0},
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{".LT.", BINOP_LESS, PREC_ORDER, 0},
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{"**", UNOP_IND, PREC_PREFIX, 0},
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{"@", BINOP_REPEAT, PREC_REPEAT, 0},
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{NULL, OP_NULL, PREC_REPEAT, 0}
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};
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enum f_primitive_types {
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f_primitive_type_character,
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f_primitive_type_logical,
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f_primitive_type_logical_s1,
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f_primitive_type_logical_s2,
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f_primitive_type_logical_s8,
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f_primitive_type_integer,
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f_primitive_type_integer_s2,
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f_primitive_type_real,
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f_primitive_type_real_s8,
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f_primitive_type_real_s16,
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f_primitive_type_complex_s8,
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f_primitive_type_complex_s16,
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f_primitive_type_void,
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nr_f_primitive_types
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};
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static void
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f_language_arch_info (struct gdbarch *gdbarch,
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struct language_arch_info *lai)
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{
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const struct builtin_f_type *builtin = builtin_f_type (gdbarch);
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lai->string_char_type = builtin->builtin_character;
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lai->primitive_type_vector
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= GDBARCH_OBSTACK_CALLOC (gdbarch, nr_f_primitive_types + 1,
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struct type *);
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lai->primitive_type_vector [f_primitive_type_character]
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= builtin->builtin_character;
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lai->primitive_type_vector [f_primitive_type_logical]
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= builtin->builtin_logical;
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lai->primitive_type_vector [f_primitive_type_logical_s1]
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= builtin->builtin_logical_s1;
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lai->primitive_type_vector [f_primitive_type_logical_s2]
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= builtin->builtin_logical_s2;
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lai->primitive_type_vector [f_primitive_type_logical_s8]
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= builtin->builtin_logical_s8;
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lai->primitive_type_vector [f_primitive_type_real]
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= builtin->builtin_real;
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lai->primitive_type_vector [f_primitive_type_real_s8]
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= builtin->builtin_real_s8;
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lai->primitive_type_vector [f_primitive_type_real_s16]
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= builtin->builtin_real_s16;
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lai->primitive_type_vector [f_primitive_type_complex_s8]
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= builtin->builtin_complex_s8;
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lai->primitive_type_vector [f_primitive_type_complex_s16]
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= builtin->builtin_complex_s16;
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lai->primitive_type_vector [f_primitive_type_void]
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= builtin->builtin_void;
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lai->bool_type_symbol = "logical";
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lai->bool_type_default = builtin->builtin_logical_s2;
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}
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/* Remove the modules separator :: from the default break list. */
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static const char *
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f_word_break_characters (void)
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{
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static char *retval;
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if (!retval)
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{
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char *s;
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retval = xstrdup (default_word_break_characters ());
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s = strchr (retval, ':');
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if (s)
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{
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char *last_char = &s[strlen (s) - 1];
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*s = *last_char;
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*last_char = 0;
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}
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}
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return retval;
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}
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/* Consider the modules separator :: as a valid symbol name character
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class. */
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static void
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f_collect_symbol_completion_matches (completion_tracker &tracker,
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complete_symbol_mode mode,
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symbol_name_match_type compare_name,
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const char *text, const char *word,
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enum type_code code)
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{
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default_collect_symbol_completion_matches_break_on (tracker, mode,
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compare_name,
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text, word, ":", code);
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}
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static const char *f_extensions[] =
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{
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".f", ".F", ".for", ".FOR", ".ftn", ".FTN", ".fpp", ".FPP",
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".f90", ".F90", ".f95", ".F95", ".f03", ".F03", ".f08", ".F08",
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NULL
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};
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extern const struct language_defn f_language_defn =
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{
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"fortran",
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"Fortran",
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language_fortran,
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range_check_on,
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case_sensitive_off,
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array_column_major,
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macro_expansion_no,
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f_extensions,
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&exp_descriptor_standard,
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f_parse, /* parser */
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f_yyerror, /* parser error function */
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null_post_parser,
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f_printchar, /* Print character constant */
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f_printstr, /* function to print string constant */
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f_emit_char, /* Function to print a single character */
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f_print_type, /* Print a type using appropriate syntax */
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default_print_typedef, /* Print a typedef using appropriate syntax */
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f_val_print, /* Print a value using appropriate syntax */
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c_value_print, /* FIXME */
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default_read_var_value, /* la_read_var_value */
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NULL, /* Language specific skip_trampoline */
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NULL, /* name_of_this */
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cp_lookup_symbol_nonlocal, /* lookup_symbol_nonlocal */
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basic_lookup_transparent_type,/* lookup_transparent_type */
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/* We could support demangling here to provide module namespaces
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also for inferiors with only minimal symbol table (ELF symbols).
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Just the mangling standard is not standardized across compilers
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and there is no DW_AT_producer available for inferiors with only
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the ELF symbols to check the mangling kind. */
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NULL, /* Language specific symbol demangler */
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NULL,
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NULL, /* Language specific
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class_name_from_physname */
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f_op_print_tab, /* expression operators for printing */
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0, /* arrays are first-class (not c-style) */
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1, /* String lower bound */
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f_word_break_characters,
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f_collect_symbol_completion_matches,
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f_language_arch_info,
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default_print_array_index,
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default_pass_by_reference,
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default_get_string,
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c_watch_location_expression,
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NULL, /* la_get_symbol_name_matcher */
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iterate_over_symbols,
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default_search_name_hash,
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&default_varobj_ops,
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NULL,
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NULL,
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LANG_MAGIC
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};
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static void *
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build_fortran_types (struct gdbarch *gdbarch)
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{
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struct builtin_f_type *builtin_f_type
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= GDBARCH_OBSTACK_ZALLOC (gdbarch, struct builtin_f_type);
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builtin_f_type->builtin_void
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= arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "VOID");
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builtin_f_type->builtin_character
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= arch_integer_type (gdbarch, TARGET_CHAR_BIT, 0, "character");
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builtin_f_type->builtin_logical_s1
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= arch_boolean_type (gdbarch, TARGET_CHAR_BIT, 1, "logical*1");
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builtin_f_type->builtin_integer_s2
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= arch_integer_type (gdbarch, gdbarch_short_bit (gdbarch), 0,
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"integer*2");
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builtin_f_type->builtin_logical_s2
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= arch_boolean_type (gdbarch, gdbarch_short_bit (gdbarch), 1,
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"logical*2");
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builtin_f_type->builtin_logical_s8
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= arch_boolean_type (gdbarch, gdbarch_long_long_bit (gdbarch), 1,
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"logical*8");
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builtin_f_type->builtin_integer
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= arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), 0,
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"integer");
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builtin_f_type->builtin_logical
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= arch_boolean_type (gdbarch, gdbarch_int_bit (gdbarch), 1,
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"logical*4");
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builtin_f_type->builtin_real
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= arch_float_type (gdbarch, gdbarch_float_bit (gdbarch),
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"real", gdbarch_float_format (gdbarch));
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builtin_f_type->builtin_real_s8
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= arch_float_type (gdbarch, gdbarch_double_bit (gdbarch),
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"real*8", gdbarch_double_format (gdbarch));
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builtin_f_type->builtin_real_s16
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= arch_float_type (gdbarch, gdbarch_long_double_bit (gdbarch),
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"real*16", gdbarch_long_double_format (gdbarch));
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builtin_f_type->builtin_complex_s8
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= arch_complex_type (gdbarch, "complex*8",
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builtin_f_type->builtin_real);
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builtin_f_type->builtin_complex_s16
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= arch_complex_type (gdbarch, "complex*16",
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builtin_f_type->builtin_real_s8);
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builtin_f_type->builtin_complex_s32
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= arch_complex_type (gdbarch, "complex*32",
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builtin_f_type->builtin_real_s16);
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return builtin_f_type;
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}
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static struct gdbarch_data *f_type_data;
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const struct builtin_f_type *
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builtin_f_type (struct gdbarch *gdbarch)
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{
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return (const struct builtin_f_type *) gdbarch_data (gdbarch, f_type_data);
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}
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void
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_initialize_f_language (void)
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{
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f_type_data = gdbarch_data_register_post_init (build_fortran_types);
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}
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