Initial Fortran language support, adapted from work by Farooq Butt

	(fmbutt@engage.sps.mot.com).
	* Makefile.in: Add Fortran-related files and dependencies.
	* defs.h (language_fortran): New language enum.
	* language.h (_LANG_fortran): Define.
	(MAX_FORTRAN_DIMS): Define.
	* expression.h: Reformat to standard.
	(MULTI_F77_SUBSCRIPT, OP_F77_UNDETERMINED_ARGLIST,
	OP_F77_LITERAL_COMPLEX, OP_F77_SUBSTR): New expression opcodes.
	* gdbtypes.h (TYPE_CODE_COMPLEX, TYPE_CODE_LITERAL_COMPLEX,
	TYPE_CODE_LITERAL_STRING): New type codes.
	(type): New fields upper_bound_type and lower_bound_type.
	(TYPE_ARRAY_UPPER_BOUND_TYPE, TYPE_ARRAY_LOWER_BOUND_TYPE,
	TYPE_ARRAY_UPPER_BOUND_VALUE, TYPE_ARRAY_LOWER_BOUND_VALUE): New
	macros.
	(builtin_type_f_character, etc): Declare.
	* value.h (VALUE_LITERAL_DATA, VALUE_SUBSTRING_START): Define.
	* f-exp.y: New file, Fortran expression grammar.
	* f-lang.c: New file, Fortran language support functions.
	* f-lang.h: New file, Fortran language support declarations.
	* f-typeprint.c: New file, Fortran type printing.
	* f-valprint.c: New file, Fortran value printing.
	* eval.c (evaluate_subexp): Add code for new expression opcodes,
	fix wording of error message.
	* gdbtypes.c (f77_create_literal_complex_type,
	f77_create_literal_string_type): New functions.
	* language.c (set_language_command): Add Fortran info.
	(calc_f77_array_dims): New function.
	* parse.c (length_of_subexp, prefixify_subexp): Add cases for new
	expression opcodes.
	* symfile.c (deduce_language_from_filename): Recognize .f and .F
	as Fortran source files.
	* valops.c (f77_value_literal_string, f77_value_substring,
	f77_value_literal_complex): New functions.

1 files changed, 90 insertions, 0 deletions

diff --git a/gdb/f-lang.h b/gdb/f-lang.h
new file mode 100644
index 00000000000..9611366879a
--- /dev/null
+++ b/gdb/f-lang.h
@@ -0,0 +1,90 @@
+/* Fortran language support definitions for GDB, the GNU debugger.
+   Copyright 1992, 1993, 1994 Free Software Foundation, Inc.
+   Contributed by Motorola.  Adapted from the C definitions 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+extern int f_parse PARAMS ((void));
+
+extern void f_error PARAMS ((char *));	/* Defined in f-exp.y */
+
+extern void f_print_type PARAMS ((struct type *, char *, FILE *, int, int));
+
+extern int f_val_print PARAMS ((struct type *, char *, CORE_ADDR, FILE *,
+				int, int, int, enum val_prettyprint));
+
+/* Language-specific data structures */ 
+
+struct common_entry
+{
+  struct symbol *symbol;                    /* The symbol node corresponding
+					       to this component */ 
+  struct common_entry *next;                /* The next component */ 
+};
+
+struct saved_f77_common
+{
+  char *name;                                /* Name of COMMON */
+  char *owning_function;                     /* Name of parent function */ 
+  int secnum;                                /* Section # of .bss */ 
+  CORE_ADDR offset;                          /* Offset from .bss for 
+						this block */
+  struct common_entry *entries;              /* List of block's components */
+  struct common_entry *end_of_entries;       /* ptr. to end of components */ 
+  struct saved_f77_common *next;              /* Next saved COMMON block */ 
+};
+
+typedef struct saved_f77_common    SAVED_F77_COMMON, *SAVED_F77_COMMON_PTR;
+
+typedef struct common_entry        COMMON_ENTRY, *COMMON_ENTRY_PTR;
+
+extern SAVED_F77_COMMON_PTR head_common_list;   /* Ptr to 1st saved COMMON  */
+extern SAVED_F77_COMMON_PTR tail_common_list;   /* Ptr to last saved COMMON  */
+extern SAVED_F77_COMMON_PTR current_common;     /* Ptr to current COMMON */
+
+#define UNINITIALIZED_SECNUM -1 
+#define COMMON_NEEDS_PATCHING(blk) ((blk)->secnum == UNINITIALIZED_SECNUM)
+
+#define BLANK_COMMON_NAME_ORIGINAL "#BLNK_COM"  /* XLF assigned  */
+#define BLANK_COMMON_NAME_MF77     "__BLNK__"   /* MF77 assigned  */
+#define BLANK_COMMON_NAME_LOCAL    "__BLANK"    /* Local GDB */
+
+#define BOUND_FETCH_OK 1
+#define BOUND_FETCH_ERROR -999
+
+/* When reasonable array bounds cannot be fetched, such as when 
+you ask to 'mt print symbols' and there is no stack frame and 
+therefore no way of knowing the bounds of stack-based arrays, 
+we have to assign default bounds, these are as good as any... */ 
+
+#define DEFAULT_UPPER_BOUND 999999
+#define DEFAULT_LOWER_BOUND -999999
+
+extern char *real_main_name;   /* Name of main function */ 
+extern int  real_main_c_value;   /* C_value field of main function */ 
+
+extern int f77_get_dynamic_upperbound PARAMS ((struct type *, int *));
+
+extern int f77_get_dynamic_lowerbound PARAMS ((struct type *, int *));
+
+extern void f77_get_dynamic_array_length PARAMS ((struct type *)); 
+
+#define DEFAULT_DOTMAIN_NAME_IN_MF77            ".MAIN_"
+#define DEFAULT_MAIN_NAME_IN_MF77               "MAIN_"
+#define DEFAULT_DOTMAIN_NAME_IN_XLF_BUGGY       ".main "
+#define DEFAULT_DOTMAIN_NAME_IN_XLF             ".main"