X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Flanguage.h;h=cc0df8c5ce2747840f98c983843e91309f28c21f;hb=4da3eb35ef0545aac35dbd09070e5bf925f947d3;hp=76dad325b5b740a9c73fd007a5bb669db13d589d;hpb=d3eab38a48ec521922e7d07595fd693df7ff3510;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/language.h b/gdb/language.h index 76dad325b5..cc0df8c5ce 100644 --- a/gdb/language.h +++ b/gdb/language.h @@ -1,7 +1,6 @@ /* Source-language-related definitions for GDB. - Copyright (C) 1991-1995, 1998-2000, 2003-2004, 2007-2012 Free - Software Foundation, Inc. + Copyright (C) 1991-2017 Free Software Foundation, Inc. Contributed by the Department of Computer Science at the State University of New York at Buffalo. @@ -24,6 +23,9 @@ #if !defined (LANGUAGE_H) #define LANGUAGE_H 1 +#include "symtab.h" +#include "common/function-view.h" + /* Forward decls for prototypes. */ struct value; struct objfile; @@ -31,6 +33,10 @@ struct frame_info; struct expression; struct ui_file; struct value_print_options; +struct type_print_options; +struct lang_varobj_ops; +struct parser_state; +struct compile_instance; #define MAX_FORTRAN_DIMS 7 /* Maximum number of F77 array dims. */ @@ -55,27 +61,6 @@ 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_manual: case_sensitivity set only by user. */ @@ -127,6 +112,11 @@ struct language_arch_info expressions, regardless of whether the program being debugged actually defines such a type. */ struct type **primitive_type_vector; + + /* Symbol wrappers around primitive_type_vector, so that the symbol lookup + machinery can return them. */ + struct symbol **primitive_type_symbols; + /* Type of elements of strings. */ struct type *string_char_type; @@ -152,7 +142,11 @@ struct language_defn { /* Name of the language. */ - char *la_name; + const char *la_name; + + /* Natural or official name of the language. */ + + const char *la_natural_name; /* its symtab language-enum (defs.h). */ @@ -162,10 +156,6 @@ struct language_defn enum range_check la_range_check; - /* Default type checking. */ - - enum type_check la_type_check; - /* Default case sensitivity. */ enum case_sensitivity la_case_sensitivity; @@ -175,6 +165,13 @@ struct language_defn /* Style of macro expansion, if any, supported by this language. */ enum macro_expansion la_macro_expansion; + /* A NULL-terminated array of file extensions for this language. + The extension must include the ".", like ".c". If this + language doesn't need to provide any filename extensions, this + may be NULL. */ + + const char *const *la_filename_extensions; + /* Definitions related to expression printing, prefixifying, and dumping. */ @@ -182,11 +179,11 @@ struct language_defn /* Parser function. */ - int (*la_parser) (void); + int (*la_parser) (struct parser_state *); /* Parser error function. */ - void (*la_error) (char *); + void (*la_error) (const char *); /* Given an expression *EXPP created by prefixifying the result of la_parser, perform any remaining processing necessary to complete @@ -210,7 +207,7 @@ struct language_defn /* Print a type using syntax appropriate for this language. */ void (*la_print_type) (struct type *, const char *, struct ui_file *, int, - int); + int, const struct type_print_options *); /* Print a typedef using syntax appropriate for this language. TYPE is the underlying type. NEW_SYMBOL is the symbol naming @@ -223,9 +220,6 @@ struct language_defn TYPE is the type of the sub-object to be printed. - CONTENTS holds the bits of the value. This holds the entire - enclosing object. - 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 @@ -241,10 +235,9 @@ struct language_defn 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, + struct value *val, const struct value_print_options *options); /* Print a top-level value using syntax appropriate for this language. */ @@ -252,6 +245,21 @@ struct language_defn void (*la_value_print) (struct value *, struct ui_file *, const struct value_print_options *); + /* Given a symbol VAR, the corresponding block VAR_BLOCK (if any) and a + stack frame id FRAME, read the value of the variable and return (pointer + to a) struct value containing the value. + + VAR_BLOCK is needed if there's a possibility for VAR to be outside + FRAME. This is what happens if FRAME correspond to a nested function + and VAR is defined in the outer function. If callers know that VAR is + located in FRAME or is global/static, NULL can be passed as VAR_BLOCK. + + Throw an error if the variable cannot be found. */ + + struct value *(*la_read_var_value) (struct symbol *var, + const struct block *var_block, + struct frame_info *frame); + /* PC is possibly an unknown languages trampoline. If that PC falls in a trampoline belonging to this language, return the address of the first pc in the real function, or 0 @@ -263,15 +271,17 @@ struct language_defn /* If this is non-NULL, specifies the name that of the implicit local variable that refers to the current object instance. */ - char *la_name_of_this; + const 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 struct block *, - const domain_enum); + struct block_symbol (*la_lookup_symbol_nonlocal) + (const struct language_defn *, + const char *, + const struct block *, + const domain_enum); /* Find the definition of the type with the given name. */ struct type *(*la_lookup_transparent_type) (const char *); @@ -279,6 +289,22 @@ struct language_defn /* Return demangled language symbol, or NULL. */ char *(*la_demangle) (const char *mangled, int options); + /* Demangle a symbol according to this language's rules. Unlike + la_demangle, this does not take any options. + + *DEMANGLED will be set by this function. + + If this function returns 0, then *DEMANGLED must always be set + to NULL. + + If this function returns 1, the implementation may set this to + a xmalloc'd string holding the demangled form. However, it is + not required to. The string, if any, is owned by the caller. + + The resulting string should be of the form that will be + installed into a symbol. */ + int (*la_sniff_from_mangled_name) (const char *mangled, char **demangled); + /* Return class name of a mangled method name or NULL. */ char *(*la_class_name_from_physname) (const char *physname); @@ -295,12 +321,16 @@ struct language_defn char string_lower_bound; /* The list of characters forming word boundaries. */ - char *(*la_word_break_characters) (void); + const 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 *, @@ -328,6 +358,12 @@ struct language_defn void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length, struct type **chartype, const char **charset); + /* Return an expression that can be used for a location + watchpoint. TYPE is a pointer type that points to the memory + to watch, and ADDR is the address of the watched memory. */ + gdb::unique_xmalloc_ptr (*la_watch_location_expression) + (struct type *type, CORE_ADDR addr); + /* 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. @@ -339,22 +375,52 @@ struct language_defn /* Find all symbols in the current program space matching NAME in DOMAIN, according to this language's rules. - The search starts with BLOCK. This function iterates upward - through blocks. When the outermost block has been finished, - the function returns. + 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. + For each one, call CALLBACK with the symbol. If CALLBACK + returns false, 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); + void (*la_iterate_over_symbols) + (const struct block *block, const char *name, domain_enum domain, + gdb::function_view callback); + + /* Various operations on varobj. */ + const struct lang_varobj_ops *la_varobj_ops; + + /* If this language allows compilation from the gdb command line, + this method should be non-NULL. When called it should return + an instance of struct gcc_context appropriate to the language. + When defined this method must never return NULL; instead it + should throw an exception on failure. The returned compiler + instance is owned by its caller and must be deallocated by + calling its 'destroy' method. */ + + struct compile_instance *(*la_get_compile_instance) (void); + + /* This method must be defined if 'la_get_gcc_context' is defined. + If 'la_get_gcc_context' is not defined, then this method is + ignored. + + This takes the user-supplied text and returns a new bit of code + to compile. + + INST is the compiler instance being used. + INPUT is the user's input text. + GDBARCH is the architecture to use. + EXPR_BLOCK is the block in which the expression is being + parsed. + EXPR_PC is the PC at which the expression is being parsed. */ + + std::string (*la_compute_program) (struct compile_instance *inst, + const char *input, + struct gdbarch *gdbarch, + const struct block *expr_block, + CORE_ADDR expr_pc); /* Add fields above this point, so the magic number is always last. */ /* Magic number for compat checking. */ @@ -405,17 +471,25 @@ struct type *language_bool_type (const struct language_defn *l, struct type *language_string_char_type (const struct language_defn *l, struct gdbarch *gdbarch); -struct type *language_lookup_primitive_type_by_name (const struct language_defn *l, - struct gdbarch *gdbarch, - const char *name); +/* Look up type NAME in language L, and return its definition for architecture + GDBARCH. Returns NULL if not found. */ + +struct type *language_lookup_primitive_type (const struct language_defn *l, + struct gdbarch *gdbarch, + const char *name); + +/* Wrapper around language_lookup_primitive_type to return the + corresponding symbol. */ + +struct symbol * + language_lookup_primitive_type_as_symbol (const struct language_defn *l, + struct gdbarch *gdbarch, + const char *name); /* 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? */ #define RANGE_CHECK (range_check != range_check_off) @@ -435,15 +509,12 @@ extern enum language set_language (enum language); the current setting of working_lang, which the user sets with the "set language" command. */ -#define LA_PRINT_TYPE(type,varstring,stream,show,level) \ - (current_language->la_print_type(type,varstring,stream,show,level)) +#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_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)) @@ -460,9 +531,8 @@ extern enum language set_language (enum language); #define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \ (current_language->la_print_array_index(index_value, stream, options)) -#define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK, DATA) \ - (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK, \ - DATA)) +#define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK) \ + (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK)) /* Test a character to decide whether it can be printed in literal form or needs to be printed in another representation. For example, @@ -479,16 +549,8 @@ extern enum language set_language (enum language); extern int pointer_type (struct type *); -/* 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 *, ...) ATTRIBUTE_PRINTF (1, 2); - extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2); /* Data: Does this value represent "truth" to the current language? */ @@ -501,14 +563,12 @@ 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). */ extern void add_language (const struct language_defn *); -extern enum language get_frame_language (void); /* In stack.c */ - /* Check for a language-specific trampoline. */ extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc); @@ -517,12 +577,19 @@ extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc); extern char *language_demangle (const struct language_defn *current_language, const char *mangled, int options); +/* A wrapper for la_sniff_from_mangled_name. The arguments and result + are as for the method. */ + +extern int language_sniff_from_mangled_name (const struct language_defn *lang, + const char *mangled, + char **demangled); + /* Return class name from physname, or NULL. */ extern char *language_class_name_from_physname (const struct language_defn *, const char *physname); /* Splitting strings into words. */ -extern char *default_word_break_characters (void); +extern const 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,