X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Flanguage.h;h=49243a9e4a0fedd15188135982c73d544d33cc7e;hb=0154d99053a95392380cd4629a89b0ac46df3737;hp=39b59fc41101bb4d751c63596107972d477b501e;hpb=3e43a32aaa2d78fca10dea6746b820176f39bcc8;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/language.h b/gdb/language.h index 39b59fc411..49243a9e4a 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, 2009, 2010, 2011 Free Software Foundation, Inc. + Copyright (C) 1991-2016 Free Software Foundation, Inc. Contributed by the Department of Computer Science at the State University of New York at Buffalo. @@ -24,15 +23,21 @@ #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; +struct parser_state; +struct compile_instance; -#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. @@ -55,29 +60,8 @@ 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 @@ -87,8 +71,8 @@ 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 { @@ -98,8 +82,8 @@ 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 { @@ -109,8 +93,8 @@ case_sensitivity; /* macro_expansion == - macro_expansion_no: No macro expansion is available - macro_expansion_c: C-like macro expansion is available */ + macro_expansion_no: No macro expansion is available. + macro_expansion_c: C-like macro expansion is available. */ enum macro_expansion { @@ -127,7 +111,12 @@ 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. */ + + /* 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; /* Symbol name of type to use as boolean type, if defined. */ @@ -136,45 +125,55 @@ struct language_arch_info 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); + int (*la_parser) (struct parser_state *); - /* Parser error function */ + /* Parser error function. */ void (*la_error) (char *); @@ -197,10 +196,10 @@ struct language_defn void (*la_emitchar) (int ch, struct type *chtype, struct ui_file * stream, int quoter); - /* Print a type using syntax appropriate for this language. */ + /* 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 @@ -230,17 +229,32 @@ struct language_defn OPTIONS are the formatting options to be used when printing. */ - int (*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); + 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 *); - /* Print a top-level value using syntax appropriate for this language. */ + /* 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. - int (*la_value_print) (struct value *, struct ui_file *, - const struct value_print_options *); + 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, @@ -259,9 +273,11 @@ struct language_defn 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 *); @@ -272,25 +288,29 @@ 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 *, @@ -318,8 +338,69 @@ struct language_defn void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length, struct type **chartype, const char **charset); - /* Add fields above this point, so the magic number is always last. */ - /* Magic number for compat checking */ + /* 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; + + /* 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 newly malloc'd + bit of code to compile. The caller owns the result. + + 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. */ + + char *(*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. */ long la_magic; @@ -367,22 +448,30 @@ 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? */ +/* 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 */ +/* "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) @@ -395,10 +484,10 @@ 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) \ - (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)) @@ -422,11 +511,15 @@ 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)) + /* 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 \ @@ -435,36 +528,10 @@ extern enum language set_language (enum language); /* 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 */ -#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? */ @@ -477,15 +544,13 @@ 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. */ +/* Check for a language-specific trampoline. */ extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);