X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Flanguage.h;h=b730d9b26eac1dd1ac7c70ad5fd2bd9167436e6c;hb=c4093a6ab3c9ba5f830ca18d91d8b4db5b1d28ee;hp=9fd39b2c5d995a6c9f493321834cf43882e68496;hpb=e58de8a23021ce9bbdee715ac79745ebb93437a8;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/language.h b/gdb/language.h index 9fd39b2c5d..b730d9b26e 100644 --- a/gdb/language.h +++ b/gdb/language.h @@ -3,29 +3,31 @@ Contributed by the Department of Computer Science at the State University of New York at Buffalo. -This file is part of GDB. + 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 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. + 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. */ + 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. */ #if !defined (LANGUAGE_H) #define LANGUAGE_H 1 -#ifdef __STDC__ /* Forward decls for prototypes */ +/* Forward decls for prototypes */ struct value; -/* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */ -#endif +struct objfile; +struct expression; +/* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */ /* This used to be included to configure GDB for one or more specific languages. Now it is shortcutted to configure for all of them. FIXME. */ @@ -33,12 +35,19 @@ struct value; #define _LANG_c #define _LANG_m2 #define _LANG_chill +#define _LANG_fortran + +#define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims */ /* range_mode == range_mode_auto: range_check set automatically to default of language. range_mode_manual: range_check set manually by user. */ -extern enum range_mode {range_mode_auto, range_mode_manual} range_mode; +extern enum range_mode + { + range_mode_auto, range_mode_manual + } +range_mode; /* range_check == range_check_on: Ranges are checked in GDB expressions, producing errors. @@ -46,13 +55,20 @@ extern enum range_mode {range_mode_auto, range_mode_manual} range_mode; range_check_off: Ranges are not checked in GDB expressions. */ extern enum range_check - {range_check_off, range_check_warn, range_check_on} range_check; + { + range_check_off, range_check_warn, range_check_on + } +range_check; /* type_mode == type_mode_auto: type_check set automatically to default of language type_mode_manual: type_check set manually by user. */ -extern enum type_mode {type_mode_auto, type_mode_manual} type_mode; +extern enum type_mode + { + type_mode_auto, type_mode_manual + } +type_mode; /* type_check == type_check_on: Types are checked in GDB expressions, producing errors. @@ -60,39 +76,160 @@ extern enum type_mode {type_mode_auto, type_mode_manual} type_mode; type_check_off: Types are not checked in GDB expressions. */ extern enum type_check - {type_check_off, type_check_warn, type_check_on} type_check; + { + type_check_off, type_check_warn, type_check_on + } +type_check; +/* Information for doing language dependent formatting of printed values. */ + +struct language_format_info + { + /* The format that can be passed directly to standard C printf functions + to generate a completely formatted value in the format appropriate for + the language. */ + + char *la_format; + + /* The prefix to be used when directly printing a value, or constructing + a standard C printf format. This generally is everything up to the + conversion specification (the part introduced by the '%' character + and terminated by the conversion specifier character). */ + + char *la_format_prefix; + + /* The conversion specifier. This is generally everything after the + field width and precision, typically only a single character such + as 'o' for octal format or 'x' for hexadecimal format. */ + + char *la_format_specifier; + + /* The suffix to be used when directly printing a value, or constructing + a standard C printf format. This generally is everything after the + conversion specification (the part introduced by the '%' character + and terminated by the conversion specifier character). */ + + char *la_format_suffix; /* Suffix for custom format string */ + }; + /* Structure tying together assorted information about a language. */ -struct language_defn { - char * la_name; /* Name of the language */ - enum language la_language; /* its symtab language-enum (defs.h) */ - struct type ** const - *la_builtin_type_vector; /* Its builtin types */ - enum range_check la_range_check; /* Default range checking */ - enum type_check la_type_check; /* Default type checking */ - int (*la_parser) PARAMS((void)); /* Parser function */ - void (*la_error) PARAMS ((char *)); /* Parser error function */ - struct type **la_longest_int; /* Longest signed integral type */ - struct type **la_longest_unsigned_int; /* Longest uns integral type */ - struct type **la_longest_float; /* Longest floating point type */ - char *la_hex_format; /* Hexadecimal printf format str */ - char *la_hex_format_pre; /* Prefix for custom format string */ - char *la_hex_format_suf; /* Suffix for custom format string */ - char *la_octal_format; /* Octal printf format str */ - char *la_octal_format_pre; /* Prefix for custom format string */ - char *la_octal_format_suf; /* Suffix for custom format string */ -const struct op_print - *la_op_print_tab; /* Table for printing expressions */ -/* Add fields above this point, so the magic number is always last. */ - long la_magic; /* Magic number for compat checking */ -}; +struct language_defn + { + /* Name of the language */ + + char *la_name; + + /* its symtab language-enum (defs.h) */ + + enum language la_language; + + /* Its builtin types. This is a vector ended by a NULL pointer. These + types can be specified by name in parsing types in expressions, + regardless of whether the program being debugged actually defines + such a type. */ + + struct type **const *la_builtin_type_vector; + + /* Default range checking */ + + enum range_check la_range_check; + + /* Default type checking */ + + enum type_check la_type_check; + + /* Parser function. */ + + int (*la_parser) PARAMS ((void)); + + /* Parser error function */ + + void (*la_error) PARAMS ((char *)); + + /* Evaluate an expression. */ + struct value *(*evaluate_exp) PARAMS ((struct type *, struct expression *, + int *, enum noside)); + + void (*la_printchar) PARAMS ((int ch, GDB_FILE * stream)); + + void (*la_printstr) PARAMS ((GDB_FILE * stream, char *string, + unsigned int length, int width, + int force_ellipses)); + + void (*la_emitchar) PARAMS ((int ch, GDB_FILE * stream, int quoter)); + + struct type *(*la_fund_type) PARAMS ((struct objfile *, int)); + + /* Print a type using syntax appropriate for this language. */ + + void (*la_print_type) PARAMS ((struct type *, char *, GDB_FILE *, int, int)); + + /* Print a value using syntax appropriate for this language. */ + + int (*la_val_print) PARAMS ((struct type *, char *, int, CORE_ADDR, GDB_FILE *, + int, int, int, enum val_prettyprint)); + + /* Print a top-level value using syntax appropriate for this language. */ + + int (*la_value_print) PARAMS ((struct value *, GDB_FILE *, + int, enum val_prettyprint)); + + /* Base 2 (binary) formats. */ + + struct language_format_info la_binary_format; + + /* Base 8 (octal) formats. */ + + struct language_format_info la_octal_format; + + /* Base 10 (decimal) formats */ + + struct language_format_info la_decimal_format; + + /* Base 16 (hexadecimal) formats */ + + struct language_format_info la_hex_format; + + /* Table for printing expressions */ + + const struct op_print *la_op_print_tab; + + /* Zero if the language has first-class arrays. True if there are no + array values, and array objects decay to pointers, as in C. */ + + char c_style_arrays; + + /* Index to use for extracting the first element of a string. */ + char string_lower_bound; + + /* Type of elements of strings. */ + struct type **string_char_type; + + /* Add fields above this point, so the magic number is always last. */ + /* Magic number for compat checking */ + + long la_magic; + + }; #define LANG_MAGIC 910823L /* Pointer to the language_defn for our current language. This pointer always points to *some* valid struct; it can be used without checking - it for validity. */ + it for validity. + + The current language affects expression parsing and evaluation + (FIXME: it might be cleaner to make the evaluation-related stuff + separate exp_opcodes for each different set of semantics. We + should at least think this through more clearly with respect to + what happens if the language is changed between parsing and + evaluation) and printing of things like types and arrays. It does + *not* affect symbol-reading-- each source file in a symbol-file has + its own language and we should keep track of that regardless of the + language when symbols are read. If we want some manual setting for + the language of symbol files (e.g. detecting when ".c" files are + C++), it should be a seprate setting from the current_language. */ extern const struct language_defn *current_language; @@ -103,11 +240,14 @@ extern const struct language_defn *expected_language; /* language_mode == language_mode_auto: current_language automatically set upon selection - of scope (e.g. stack frame) + of scope (e.g. stack frame) language_mode_manual: current_language set only by user. */ extern enum language_mode - {language_mode_auto, language_mode_manual} language_mode; + { + language_mode_auto, language_mode_manual + } +language_mode; /* These macros define the behaviour of the expression evaluator. */ @@ -120,37 +260,127 @@ extern enum language_mode /* "cast" really means conversion */ /* FIXME -- should be a setting in language_defn */ -#define CAST_IS_CONVERSION (current_language->la_language == language_c) +#define CAST_IS_CONVERSION (current_language->la_language == language_c || \ + current_language->la_language == language_cplus) extern void language_info PARAMS ((int)); -extern void +extern enum language set_language PARAMS ((enum language)); - + /* This page contains functions that return things that are specific to languages. Each of these functions is based on the current setting of working_lang, which the user sets with the "set language" command. */ -/* Returns some built-in types */ -#define longest_int() (*current_language->la_longest_int) -#define longest_unsigned_int() (*current_language->la_longest_unsigned_int) -#define longest_float() (*current_language->la_longest_float) +#define create_fundamental_type(objfile,typeid) \ + (current_language->la_fund_type(objfile, typeid)) + +#define LA_PRINT_TYPE(type,varstring,stream,show,level) \ + (current_language->la_print_type(type,varstring,stream,show,level)) + +#define LA_VAL_PRINT(type,valaddr,offset,addr,stream,fmt,deref,recurse,pretty) \ + (current_language->la_val_print(type,valaddr,offset,addr,stream,fmt,deref, \ + recurse,pretty)) +#define LA_VALUE_PRINT(val,stream,fmt,pretty) \ + (current_language->la_value_print(val,stream,fmt,pretty)) + +/* Return a format string for printf that will print a number in one of + the local (language-specific) formats. Result is static and is + overwritten by the next call. Takes printf options like "08" or "l" + (to produce e.g. %08x or %lx). */ + +#define local_binary_format() \ + (current_language->la_binary_format.la_format) +#define local_binary_format_prefix() \ + (current_language->la_binary_format.la_format_prefix) +#define local_binary_format_specifier() \ + (current_language->la_binary_format.la_format_specifier) +#define local_binary_format_suffix() \ + (current_language->la_binary_format.la_format_suffix) + +#define local_octal_format() \ + (current_language->la_octal_format.la_format) +#define local_octal_format_prefix() \ + (current_language->la_octal_format.la_format_prefix) +#define local_octal_format_specifier() \ + (current_language->la_octal_format.la_format_specifier) +#define local_octal_format_suffix() \ + (current_language->la_octal_format.la_format_suffix) + +#define local_decimal_format() \ + (current_language->la_decimal_format.la_format) +#define local_decimal_format_prefix() \ + (current_language->la_decimal_format.la_format_prefix) +#define local_decimal_format_specifier() \ + (current_language->la_decimal_format.la_format_specifier) +#define local_decimal_format_suffix() \ + (current_language->la_decimal_format.la_format_suffix) + +#define local_hex_format() \ + (current_language->la_hex_format.la_format) +#define local_hex_format_prefix() \ + (current_language->la_hex_format.la_format_prefix) +#define local_hex_format_specifier() \ + (current_language->la_hex_format.la_format_specifier) +#define local_hex_format_suffix() \ + (current_language->la_hex_format.la_format_suffix) + +#define LA_PRINT_CHAR(ch, stream) \ + (current_language->la_printchar(ch, stream)) +#define LA_PRINT_STRING(stream, string, length, width, force_ellipses) \ + (current_language->la_printstr(stream, string, length, width, force_ellipses)) +#define LA_EMIT_CHAR(ch, stream, quoter) \ + (current_language->la_emitchar(ch, stream, quoter)) + +/* Test a character to decide whether it can be printed in literal form + or needs to be printed in another representation. For example, + in C the literal form of the character with octal value 141 is 'a' + and the "other representation" is '\141'. The "other representation" + is program language dependent. */ + +#define PRINT_LITERAL_FORM(c) \ + ((c) >= 0x20 \ + && ((c) < 0x7F || (c) >= 0xA0) \ + && (!sevenbit_strings || (c) < 0x80)) + +/* Return a format string for printf that will print a number in one of + the local (language-specific) formats. Result is static and is + overwritten by the next call. Takes printf options like "08" or "l" + (to produce e.g. %08x or %lx). */ + +extern char * + local_decimal_format_custom PARAMS ((char *)); /* language.c */ + +extern char * + local_octal_format_custom PARAMS ((char *)); /* language.c */ + +extern char * + local_hex_format_custom PARAMS ((char *)); /* language.c */ + +/* Return a string that contains the hex digits of the number. No preceeding + "0x" */ -/* Hexadecimal number formatting is in defs.h because it is so common - throughout GDB. */ +extern char * + longest_raw_hex_string PARAMS ((LONGEST)); -/* Return a format string for printf that will print a number in the local - (language-specific) octal format. Result is static and is - overwritten by the next call. local_octal_format_custom takes printf - options like "08" or "l" (to produce e.g. %08x or %lx). */ +/* Return a string that contains a number formatted in one of the local + (language-specific) formats. Result is static and is overwritten by + the next call. Takes printf options like "08l" or "l". */ -#define local_octal_format() (current_language->la_octal_format) +extern char * + local_hex_string PARAMS ((unsigned long)); /* language.c */ extern char * -local_octal_format_custom PARAMS ((char *)); + longest_local_hex_string PARAMS ((LONGEST)); /* language.c */ + +extern char * + local_hex_string_custom PARAMS ((unsigned long, char *)); /* language.c */ + +extern char * + longest_local_hex_string_custom PARAMS ((LONGEST, char *)); /* language.c */ /* Type predicates */ @@ -202,27 +432,38 @@ op_error PARAMS ((char *fmt, enum exp_opcode, int)); op_error((f),(o),range_check==range_check_on ? 1 : 0) extern void -type_error (); + type_error +PARAMS ((char *,...)) +ATTR_FORMAT (printf, 1, 2); -void -range_error (); + void + range_error PARAMS ((char *,...)) + ATTR_FORMAT (printf, 1, 2); /* Data: Does this value represent "truth" to the current language? */ -extern int -value_true PARAMS ((struct value *)); + extern int + value_true PARAMS ((struct value *)); + + extern struct type *lang_bool_type PARAMS ((void)); + +/* The type used for Boolean values in the current language. */ +#define LA_BOOL_TYPE lang_bool_type () /* Misc: The string representing a particular enum language. */ -extern char * -language_str PARAMS ((enum language)); + extern enum language language_enum PARAMS ((char *str)); + + extern const struct language_defn *language_def PARAMS ((enum language)); + + extern char *language_str PARAMS ((enum language)); /* Add a language to the set known by GDB (at initialization time). */ -extern void -add_language PARAMS ((const struct language_defn *)); + extern void + add_language PARAMS ((const struct language_defn *)); -extern enum language -get_frame_language PARAMS ((void)); /* In stack.c */ + extern enum language + get_frame_language PARAMS ((void)); /* In stack.c */ -#endif /* defined (LANGUAGE_H) */ +#endif /* defined (LANGUAGE_H) */