X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Flanguage.h;h=ded595f0040da14c50d0927ca1ec122714aeefe4;hb=2117c711ae07700adb57ea5b5ca61e4c32d7e3d2;hp=f7e654d229479c8f180e7323652aa9ffc37377d7;hpb=41d27058f2a51665c78726b4a13510fcfc7db007;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/language.h b/gdb/language.h index f7e654d229..ded595f004 100644 --- a/gdb/language.h +++ b/gdb/language.h @@ -1,7 +1,6 @@ /* Source-language-related definitions for GDB. - Copyright (C) 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2003, 2004, - 2007, 2008 Free Software Foundation, Inc. + Copyright (C) 1991-2014 Free Software Foundation, Inc. Contributed by the Department of Computer Science at the State University of New York at Buffalo. @@ -24,22 +23,19 @@ #if !defined (LANGUAGE_H) #define LANGUAGE_H 1 -/* Forward decls for prototypes */ +#include "symtab.h" + +/* Forward decls for prototypes. */ struct value; struct objfile; struct frame_info; struct expression; struct ui_file; +struct value_print_options; +struct type_print_options; +struct lang_varobj_ops; -/* This used to be included to configure GDB for one or more specific - languages. Now it is left out to configure for all of them. FIXME. */ -/* #include "lang_def.h" */ -#define _LANG_c -#define _LANG_m2 -#define _LANG_fortran -#define _LANG_pascal - -#define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims */ +#define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims. */ /* range_mode == range_mode_auto: range_check set automatically to default of language. @@ -62,29 +58,8 @@ extern enum range_check } 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; - -/* type_check == - type_check_on: Types are checked in GDB expressions, producing errors. - type_check_warn: Types are checked, producing warnings. - 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; - /* case_mode == - case_mode_auto: case_sensitivity set upon selection of scope + case_mode_auto: case_sensitivity set upon selection of scope. case_mode_manual: case_sensitivity set only by user. */ extern enum case_mode @@ -94,8 +69,8 @@ extern enum case_mode case_mode; /* array_ordering == - array_row_major: Arrays are in row major order - array_column_major: Arrays are in column major order.*/ + array_row_major: Arrays are in row major order. + array_column_major: Arrays are in column major order. */ extern enum array_ordering { @@ -105,14 +80,25 @@ array_ordering; /* case_sensitivity == - case_sensitive_on: Case sensitivity in name matching is used - case_sensitive_off: Case sensitivity in name matching is not used */ + case_sensitive_on: Case sensitivity in name matching is used. + case_sensitive_off: Case sensitivity in name matching is not used. */ extern enum case_sensitivity { case_sensitive_on, case_sensitive_off } case_sensitivity; + + +/* macro_expansion == + macro_expansion_no: No macro expansion is available. + macro_expansion_c: C-like macro expansion is available. */ + +enum macro_expansion + { + macro_expansion_no, macro_expansion_c + }; + /* Per architecture (OS/ABI) language information. */ @@ -123,46 +109,64 @@ struct language_arch_info expressions, regardless of whether the program being debugged actually defines such a type. */ struct type **primitive_type_vector; - /* Type of elements of strings. */ + /* Type of elements of strings. */ struct type *string_char_type; + + /* Symbol name of type to use as boolean type, if defined. */ + const char *bool_type_symbol; + /* Otherwise, this is the default boolean builtin type. */ + struct type *bool_type_default; }; +/* A pointer to a function expected to return nonzero if + SYMBOL_SEARCH_NAME matches the given LOOKUP_NAME. + + SYMBOL_SEARCH_NAME should be a symbol's "search" name. + LOOKUP_NAME should be the name of an entity after it has been + transformed for lookup. */ + +typedef int (*symbol_name_cmp_ftype) (const char *symbol_search_name, + const char *lookup_name); + /* Structure tying together assorted information about a language. */ struct language_defn { - /* Name of the language */ + /* Name of the language. */ - char *la_name; + const char *la_name; - /* its symtab language-enum (defs.h) */ + /* Natural or official name of the language. */ - enum language la_language; + const char *la_natural_name; - /* Default range checking */ + /* its symtab language-enum (defs.h). */ - enum range_check la_range_check; + enum language la_language; - /* Default type checking */ + /* Default range checking. */ - enum type_check la_type_check; + enum range_check la_range_check; - /* Default case sensitivity */ + /* Default case sensitivity. */ enum case_sensitivity la_case_sensitivity; - /* Multi-dimensional array ordering */ + /* Multi-dimensional array ordering. */ enum array_ordering la_array_ordering; + /* Style of macro expansion, if any, supported by this language. */ + enum macro_expansion la_macro_expansion; + /* Definitions related to expression printing, prefixifying, and - dumping */ + dumping. */ const struct exp_descriptor *la_exp_desc; - /* Parser function. */ + /* Parser function. */ int (*la_parser) (void); - /* Parser error function */ + /* Parser error function. */ void (*la_error) (char *); @@ -174,29 +178,70 @@ struct language_defn void (*la_post_parser) (struct expression ** expp, int void_context_p); - void (*la_printchar) (int ch, struct ui_file * stream); + void (*la_printchar) (int ch, struct type *chtype, + struct ui_file * stream); + + void (*la_printstr) (struct ui_file * stream, struct type *elttype, + const gdb_byte *string, unsigned int length, + const char *encoding, int force_ellipses, + const struct value_print_options *); + + void (*la_emitchar) (int ch, struct type *chtype, + struct ui_file * stream, int quoter); + + /* Print a type using syntax appropriate for this language. */ + + void (*la_print_type) (struct type *, const char *, struct ui_file *, int, + int, const struct type_print_options *); - void (*la_printstr) (struct ui_file * stream, const gdb_byte *string, - unsigned int length, int width, - int force_ellipses); + /* Print a typedef using syntax appropriate for this language. + TYPE is the underlying type. NEW_SYMBOL is the symbol naming + the type. STREAM is the output stream on which to print. */ - void (*la_emitchar) (int ch, struct ui_file * stream, int quoter); + void (*la_print_typedef) (struct type *type, struct symbol *new_symbol, + struct ui_file *stream); - /* Print a type using syntax appropriate for this language. */ + /* Print a value using syntax appropriate for this language. + + TYPE is the type of the sub-object to be printed. - void (*la_print_type) (struct type *, char *, struct ui_file *, int, - int); + CONTENTS holds the bits of the value. This holds the entire + enclosing object. - /* Print a value using syntax appropriate for this language. */ + EMBEDDED_OFFSET is the offset into the outermost object of the + sub-object represented by TYPE. This is the object which this + call should print. Note that the enclosing type is not + available. - int (*la_val_print) (struct type *, const gdb_byte *, int, CORE_ADDR, - struct ui_file *, int, int, int, - enum val_prettyprint); + ADDRESS is the address in the inferior of the enclosing object. - /* Print a top-level value using syntax appropriate for this language. */ + STREAM is the stream on which the value is to be printed. - int (*la_value_print) (struct value *, struct ui_file *, - int, enum val_prettyprint); + RECURSE is the recursion depth. It is zero-based. + + OPTIONS are the formatting options to be used when + printing. */ + + void (*la_val_print) (struct type *type, + const gdb_byte *contents, + int embedded_offset, CORE_ADDR address, + struct ui_file *stream, int recurse, + const struct value *val, + const struct value_print_options *options); + + /* Print a top-level value using syntax appropriate for this language. */ + + void (*la_value_print) (struct value *, struct ui_file *, + const struct value_print_options *); + + /* Given a symbol VAR, and a stack frame id FRAME, read the value + of the variable an return (pointer to a) struct value containing + the value. + + Throw an error if the variable cannot be found. */ + + struct value *(*la_read_var_value) (struct symbol *var, + struct frame_info *frame); /* PC is possibly an unknown languages trampoline. If that PC falls in a trampoline belonging to this language, @@ -206,24 +251,18 @@ struct language_defn /* Now come some hooks for lookup_symbol. */ - /* If this is non-NULL, lookup_symbol will do the 'field_of_this' - check, using this function to find the value of this. */ - - /* FIXME: carlton/2003-05-19: Audit all the language_defn structs - to make sure we're setting this appropriately: I'm sure it - could be NULL in more languages. */ + /* If this is non-NULL, specifies the name that of the implicit + local variable that refers to the current object instance. */ - struct value *(*la_value_of_this) (int complain); + char *la_name_of_this; /* This is a function that lookup_symbol will call when it gets to the part of symbol lookup where C looks up static and global variables. */ struct symbol *(*la_lookup_symbol_nonlocal) (const char *, - const char *, const struct block *, - const domain_enum, - struct symtab **); + const domain_enum); /* Find the definition of the type with the given name. */ struct type *(*la_lookup_transparent_type) (const char *); @@ -234,25 +273,29 @@ struct language_defn /* Return class name of a mangled method name or NULL. */ char *(*la_class_name_from_physname) (const char *physname); - /* Table for printing expressions */ + /* 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. */ + 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. */ + /* Index to use for extracting the first element of a string. */ char string_lower_bound; /* The list of characters forming word boundaries. */ char *(*la_word_break_characters) (void); - /* Should return a NULL terminated array of all symbols which - are possible completions for TEXT. WORD is the entire command - on which the completion is being made. */ - char **(*la_make_symbol_completion_list) (char *text, char *word); + /* Should return a vector of all symbols which are possible + completions for TEXT. WORD is the entire command on which the + completion is being made. If CODE is TYPE_CODE_UNDEF, then all + symbols should be examined; otherwise, only STRUCT_DOMAIN + symbols whose type has a code of CODE should be matched. */ + VEC (char_ptr) *(*la_make_symbol_completion_list) (const char *text, + const char *word, + enum type_code code); /* The per-architecture (OS/ABI) language information. */ void (*la_language_arch_info) (struct gdbarch *, @@ -261,15 +304,58 @@ struct language_defn /* Print the index of an element of an array. */ void (*la_print_array_index) (struct value *index_value, struct ui_file *stream, - int format, - enum val_prettyprint pretty); + const struct value_print_options *options); /* Return non-zero if TYPE should be passed (and returned) by reference at the language level. */ int (*la_pass_by_reference) (struct type *type); - /* Add fields above this point, so the magic number is always last. */ - /* Magic number for compat checking */ + /* Obtain a string from the inferior, storing it in a newly allocated + buffer in BUFFER, which should be freed by the caller. If the + in- and out-parameter *LENGTH is specified at -1, the string is + read until a null character of the appropriate width is found - + otherwise the string is read to the length of characters specified. + On completion, *LENGTH will hold the size of the string in characters. + If a *LENGTH of -1 was specified it will count only actual + characters, excluding any eventual terminating null character. + Otherwise *LENGTH will include all characters - including any nulls. + CHARSET will hold the encoding used in the string. */ + void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length, + struct type **chartype, const char **charset); + + /* Return a pointer to the function that should be used to match + a symbol name against LOOKUP_NAME. This is mostly for languages + such as Ada where the matching algorithm depends on LOOKUP_NAME. + + This field may be NULL, in which case strcmp_iw will be used + to perform the matching. */ + symbol_name_cmp_ftype (*la_get_symbol_name_cmp) (const char *lookup_name); + + /* Find all symbols in the current program space matching NAME in + DOMAIN, according to this language's rules. + + The search is done in BLOCK only. + The caller is responsible for iterating up through superblocks + if desired. + + For each one, call CALLBACK with the symbol and the DATA + argument. If CALLBACK returns zero, the iteration ends at that + point. + + This field may not be NULL. If the language does not need any + special processing here, 'iterate_over_symbols' should be + used as the definition. */ + void (*la_iterate_over_symbols) (const struct block *block, + const char *name, + domain_enum domain, + symbol_found_callback_ftype *callback, + void *data); + + /* Various operations on varobj. */ + const struct lang_varobj_ops *la_varobj_ops; + + /* Add fields above this point, so the magic number is always last. */ + /* Magic number for compat checking. */ long la_magic; @@ -311,6 +397,9 @@ extern enum language_mode } language_mode; +struct type *language_bool_type (const struct language_defn *l, + struct gdbarch *gdbarch); + struct type *language_string_char_type (const struct language_defn *l, struct gdbarch *gdbarch); @@ -322,17 +411,14 @@ struct type *language_lookup_primitive_type_by_name (const struct language_defn /* These macros define the behaviour of the expression evaluator. */ -/* Should we strictly type check expressions? */ -#define STRICT_TYPE (type_check != type_check_off) - -/* Should we range check values against the domain of their type? */ +/* Should we range check values against the domain of their type? */ #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 || \ - current_language->la_language == language_cplus || \ - current_language->la_language == language_objc) +/* "cast" really means conversion. */ +/* FIXME -- should be a setting in language_defn. */ +#define CAST_IS_CONVERSION(LANG) ((LANG)->la_language == language_c || \ + (LANG)->la_language == language_cplus || \ + (LANG)->la_language == language_objc) extern void language_info (int); @@ -342,97 +428,73 @@ extern enum language set_language (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. */ + with the "set language" command. */ + +#define LA_PRINT_TYPE(type,varstring,stream,show,level,flags) \ + (current_language->la_print_type(type,varstring,stream,show,level,flags)) + +#define LA_PRINT_TYPEDEF(type,new_symbol,stream) \ + (current_language->la_print_typedef(type,new_symbol,stream)) -#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,val,recurse,options) \ + (current_language->la_val_print(type,valaddr,offset,addr,stream, \ + val,recurse,options)) +#define LA_VALUE_PRINT(val,stream,options) \ + (current_language->la_value_print(val,stream,options)) -#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)) +#define LA_PRINT_CHAR(ch, type, stream) \ + (current_language->la_printchar(ch, type, stream)) +#define LA_PRINT_STRING(stream, elttype, string, length, encoding, force_ellipses, options) \ + (current_language->la_printstr(stream, elttype, string, length, \ + encoding, force_ellipses,options)) +#define LA_EMIT_CHAR(ch, type, stream, quoter) \ + (current_language->la_emitchar(ch, type, stream, quoter)) +#define LA_GET_STRING(value, buffer, length, chartype, encoding) \ + (current_language->la_get_string(value, buffer, length, chartype, encoding)) -#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)) +#define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \ + (current_language->la_print_array_index(index_value, stream, options)) -#define LA_PRINT_ARRAY_INDEX(index_value, stream, format, pretty) \ - (current_language->la_print_array_index(index_value, stream, format, pretty)) +#define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK, DATA) \ + (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK, \ + DATA)) /* 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. */ + is program language dependent. */ #define PRINT_LITERAL_FORM(c) \ ((c) >= 0x20 \ && ((c) < 0x7F || (c) >= 0xA0) \ && (!sevenbit_strings || (c) < 0x80)) -#if 0 -/* FIXME: cagney/2000-03-04: This function does not appear to be used. - It can be deleted once 5.0 has been released. */ -/* Return a string that contains the hex digits of the number. No preceeding - "0x" */ - -extern char *longest_raw_hex_string (LONGEST); -#endif - /* Type predicates */ -extern int simple_type (struct type *); - -extern int ordered_type (struct type *); - -extern int same_type (struct type *, struct type *); - -extern int integral_type (struct type *); - -extern int numeric_type (struct type *); - -extern int character_type (struct type *); - -extern int boolean_type (struct type *); - -extern int float_type (struct type *); - extern int pointer_type (struct type *); -extern int structured_type (struct type *); - -/* Checks Binary and Unary operations for semantic type correctness */ -/* FIXME: Does not appear to be used */ +/* Checks Binary and Unary operations for semantic type correctness. */ +/* FIXME: Does not appear to be used. */ #define unop_type_check(v,o) binop_type_check((v),NULL,(o)) extern void binop_type_check (struct value *, struct value *, int); /* Error messages */ -extern void type_error (const char *, ...) ATTR_FORMAT (printf, 1, 2); - -extern void range_error (const char *, ...) ATTR_FORMAT (printf, 1, 2); +extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2); /* Data: Does this value represent "truth" to the current language? */ extern int value_true (struct value *); -extern struct type *lang_bool_type (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 enum language language_enum (char *str); extern const struct language_defn *language_def (enum language); -extern char *language_str (enum language); +extern const char *language_str (enum language); /* Add a language to the set known by GDB (at initialization time). */ @@ -440,7 +502,7 @@ extern void add_language (const struct language_defn *); extern enum language get_frame_language (void); /* In stack.c */ -/* Check for a language-specific trampoline. */ +/* Check for a language-specific trampoline. */ extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc); @@ -458,8 +520,7 @@ extern char *default_word_break_characters (void); /* Print the index of an array element using the C99 syntax. */ extern void default_print_array_index (struct value *index_value, struct ui_file *stream, - int format, - enum val_prettyprint pretty); + const struct value_print_options *options); /* Return non-zero if TYPE should be passed (and returned) by reference at the language level. */ @@ -470,4 +531,14 @@ int language_pass_by_reference (struct type *type); independent of this. */ int default_pass_by_reference (struct type *type); +/* The default implementation of la_print_typedef. */ +void default_print_typedef (struct type *type, struct symbol *new_symbol, + struct ui_file *stream); + +void default_get_string (struct value *value, gdb_byte **buffer, int *length, + struct type **char_type, const char **charset); + +void c_get_string (struct value *value, gdb_byte **buffer, int *length, + struct type **char_type, const char **charset); + #endif /* defined (LANGUAGE_H) */