X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Flanguage.h;h=16998045805bce017daafea85145d8b1603c826f;hb=242c0d81808102504721ac1289dccec5dce660f9;hp=d09d4d355e5fabcda7ef0daf5e5263b411dc2496;hpb=d8ce13268e9c7514b4b09757ad762bce9d0bfb0a;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/language.h b/gdb/language.h index d09d4d355e..1699804580 100644 --- a/gdb/language.h +++ b/gdb/language.h @@ -1,5 +1,5 @@ /* Source-language-related definitions for GDB. - Copyright 1991 Free Software Foundation, Inc. + Copyright 1991, 1992 Free Software Foundation, Inc. Contributed by the Department of Computer Science at the State University of New York at Buffalo. @@ -17,13 +17,27 @@ 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. */ +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 */ +struct value; +struct objfile; +struct expression; +/* enum exp_opcode; ANSI's `wisdom' didn't include forward enum decls. */ +#endif /* 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. */ /* #include "lang_def.h" */ #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. @@ -53,39 +67,162 @@ extern enum type_mode {type_mode_auto, type_mode_manual} type_mode; extern enum 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)(); /* Parser function */ - void (*la_error)(); /* 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 *, 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; -extern struct language_defn *current_language; +/* Pointer to the language_defn expected by the user, e.g. the language + of main(), or the language we last mentioned in a message, or C. */ + +extern const struct language_defn *expected_language; /* language_mode == language_mode_auto: current_language automatically set upon selection @@ -99,72 +236,204 @@ extern enum language_mode evaluator. */ /* Should we strictly type check expressions? */ -#define STRICT_TYPE (type_check != range_check_off) +#define STRICT_TYPE (type_check != type_check_off) /* Should we range check values against the domain of their type? */ -#define RANGE_CHECK (range_check != type_check_off) +#define RANGE_CHECK (range_check != range_check_off) /* "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 enum language +set_language PARAMS ((enum language)); -void language_info(); -void set_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) -struct type *binop_result_type(); +#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,addr,stream,fmt,deref,recurse,pretty) \ + (current_language->la_val_print(type,valaddr,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 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 "08" or "l". */ + +extern char * +local_hex_string PARAMS ((unsigned long)); /* language.c */ + +extern char * +local_hex_string_custom PARAMS ((unsigned long, char *)); /* language.c */ -/* Hexadecimal number formatting is in defs.h because it is so common - throughout GDB. */ +/* Type predicates */ -/* 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). */ +extern int +simple_type PARAMS ((struct type *)); -#define local_octal_format() (current_language->la_octal_format) -char *local_octal_format_custom(); +extern int +ordered_type PARAMS ((struct type *)); -/* Type predicates */ -int simple_type(); -int ordered_type(); -int same_type(); -int integral_type(); -int numeric_type(); -int character_type(); -int boolean_type(); -int float_type(); -int pointer_type(); -int structured_type(); +extern int +same_type PARAMS ((struct type *, struct type *)); + +extern int +integral_type PARAMS ((struct type *)); + +extern int +numeric_type PARAMS ((struct type *)); + +extern int +character_type PARAMS ((struct type *)); + +extern int +boolean_type PARAMS ((struct type *)); + +extern int +float_type PARAMS ((struct type *)); + +extern int +pointer_type PARAMS ((struct type *)); + +extern int +structured_type PARAMS ((struct type *)); /* Checks Binary and Unary operations for semantic type correctness */ -void binop_type_check(); +/* FIXME: Does not appear to be used */ #define unop_type_check(v,o) binop_type_check((v),NULL,(o)) +extern void +binop_type_check PARAMS ((struct value *, struct value *, int)); + /* Error messages */ -void op_error(); + +extern void +op_error PARAMS ((char *fmt, enum exp_opcode, int)); + #define type_op_error(f,o) \ op_error((f),(o),type_check==type_check_on ? 1 : 0) #define range_op_error(f,o) \ op_error((f),(o),range_check==range_check_on ? 1 : 0) -void type_error(); -void range_error(); + +extern void +type_error PARAMS ((char *, ...)) + ATTR_FORMAT(printf, 1, 2); + +void +range_error PARAMS ((char *, ...)) + ATTR_FORMAT(printf, 1, 2); /* Data: Does this value represent "truth" to the current language? */ -int value_true(); + +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. */ -char *language_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). */ -void add_language (); /* Arg is &language_defn */ -extern enum language get_frame_language (); /* In stack.c */ +extern void +add_language PARAMS ((const struct language_defn *)); + +extern enum language +get_frame_language PARAMS ((void)); /* In stack.c */ + +#endif /* defined (LANGUAGE_H) */