X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=gdb%2Fsymfile.h;h=58ab786182be372db54a333c1cd2d838ba6a54fb;hb=923c6a3dd16a18e87efab5731053fbf31269b505;hp=40f7db7176c79c6a2b6becf93cbe16e1c28ea66c;hpb=f29dff0a0940505506d27e54afbd750b8409846b;p=binutils-gdb.git diff --git a/gdb/symfile.h b/gdb/symfile.h index 40f7db7176c..58ab786182b 100644 --- a/gdb/symfile.h +++ b/gdb/symfile.h @@ -1,7 +1,7 @@ /* Definitions for reading symbol files into GDB. Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009 + 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of GDB. @@ -80,6 +80,8 @@ struct section_addr_info { CORE_ADDR addr; char *name; + + /* SECTINDEX must be valid for associated BFD if ADDR is not zero. */ int sectindex; } other[1]; }; @@ -109,6 +111,174 @@ struct symfile_segment_data int *segment_info; }; +/* The "quick" symbol functions exist so that symbol readers can + avoiding an initial read of all the symbols. For example, symbol + readers might choose to use the "partial symbol table" utilities, + which is one implementation of the quick symbol functions. + + The quick symbol functions are generally opaque: the underlying + representation is hidden from the caller. + + In general, these functions should only look at whatever special + index the symbol reader creates -- looking through the symbol + tables themselves is handled by generic code. If a function is + defined as returning a "symbol table", this means that the function + should only return a newly-created symbol table; it should not + examine pre-existing ones. + + The exact list of functions here was determined in an ad hoc way + based on gdb's history. */ + +struct quick_symbol_functions +{ + /* Return true if this objfile has any "partial" symbols + available. */ + int (*has_symbols) (struct objfile *objfile); + + /* Return the symbol table for the "last" file appearing in + OBJFILE. */ + struct symtab *(*find_last_source_symtab) (struct objfile *objfile); + + /* Forget all cached full file names for OBJFILE. */ + void (*forget_cached_source_info) (struct objfile *objfile); + + /* Look up the symbol table, in OBJFILE, of a source file named + NAME. If there is no '/' in the name, a match after a '/' in the + symbol table's file name will also work. FULL_PATH is the + absolute file name, and REAL_PATH is the same, run through + gdb_realpath. + + If no such symbol table can be found, returns 0. + + Otherwise, sets *RESULT to the symbol table and returns 1. This + might return 1 and set *RESULT to NULL if the requested file is + an include file that does not have a symtab of its own. */ + int (*lookup_symtab) (struct objfile *objfile, + const char *name, + const char *full_path, + const char *real_path, + struct symtab **result); + + /* Check to see if the symbol is defined in a "partial" symbol table + of OBJFILE. KIND should be either GLOBAL_BLOCK or STATIC_BLOCK, + depending on whether we want to search global symbols or static + symbols. NAME is the name of the symbol to look for. DOMAIN + indicates what sort of symbol to search for. + + Returns the newly-expanded symbol table in which the symbol is + defined, or NULL if no such symbol table exists. */ + struct symtab *(*lookup_symbol) (struct objfile *objfile, + int kind, const char *name, + domain_enum domain); + + /* This is called to expand symbol tables before looking up a + symbol. A backend can choose to implement this and then have its + `lookup_symbol' hook always return NULL, or the reverse. (It + doesn't make sense to implement both.) The arguments are as for + `lookup_symbol'. */ + void (*pre_expand_symtabs_matching) (struct objfile *objfile, + int kind, const char *name, + domain_enum domain); + + /* Print statistics about any indices loaded for OBJFILE. The + statistics should be printed to gdb_stdout. This is used for + "maint print statistics". */ + void (*print_stats) (struct objfile *objfile); + + /* Dump any indices loaded for OBJFILE. The dump should go to + gdb_stdout. This is used for "maint print objfiles". */ + void (*dump) (struct objfile *objfile); + + /* This is called by objfile_relocate to relocate any indices loaded + for OBJFILE. */ + void (*relocate) (struct objfile *objfile, + struct section_offsets *new_offsets, + struct section_offsets *delta); + + /* Find all the symbols in OBJFILE named FUNC_NAME, and ensure that + the corresponding symbol tables are loaded. */ + void (*expand_symtabs_for_function) (struct objfile *objfile, + const char *func_name); + + /* Read all symbol tables associated with OBJFILE. */ + void (*expand_all_symtabs) (struct objfile *objfile); + + /* Read all symbol tables associated with OBJFILE which have the + file name FILENAME. */ + void (*expand_symtabs_with_filename) (struct objfile *objfile, + const char *filename); + + /* Return the file name of the file holding the symbol in OBJFILE + named NAME. If no such symbol exists in OBJFILE, return NULL. */ + const char *(*find_symbol_file) (struct objfile *objfile, const char *name); + + /* This method is specific to Ada. It walks the partial symbol + tables of OBJFILE looking for a name match. WILD_MATCH and + IS_NAME_SUFFIX are predicate functions that the implementation + may call to check for a match. + + This function is completely ad hoc and new implementations should + refer to the psymtab implementation to see what to do. */ + void (*map_ada_symtabs) (struct objfile *objfile, + int (*wild_match) (const char *, int, const char *), + int (*is_name_suffix) (const char *), + void (*callback) (struct objfile *, + struct symtab *, void *), + const char *name, int global, + domain_enum namespace, int wild, + void *data); + + /* Expand all symbol tables in OBJFILE matching some criteria. + + FILE_MATCHER is called for each file in OBJFILE. The file name + and the DATA argument are passed to it. If it returns zero, this + file is skipped. + + Otherwise, if the file is not skipped, then NAME_MATCHER is + called for each symbol defined in the file. The symbol's + "natural" name and DATA are passed to NAME_MATCHER. + + If NAME_MATCHER returns zero, then this symbol is skipped. + + Otherwise, if this symbol is not skipped, and it matches KIND, + then this symbol's symbol table is expanded. + + DATA is user data that is passed unmodified to the callback + functions. */ + void (*expand_symtabs_matching) (struct objfile *objfile, + int (*file_matcher) (const char *, void *), + int (*name_matcher) (const char *, void *), + domain_enum kind, + void *data); + + /* Return the symbol table from OBJFILE that contains PC and + SECTION. Return NULL if there is no such symbol table. This + should return the symbol table that contains a symbol whose + address exactly matches PC, or, if there is no exact match, the + symbol table that contains a symbol whose address is closest to + PC. */ + struct symtab *(*find_pc_sect_symtab) (struct objfile *objfile, + struct minimal_symbol *msymbol, + CORE_ADDR pc, + struct obj_section *section, + int warn_if_readin); + + /* Call a callback for every symbol defined in OBJFILE. FUN is the + callback. It is passed the symbol's natural name, and the DATA + passed to this function. */ + void (*map_symbol_names) (struct objfile *objfile, + void (*fun) (const char *, void *), + void *data); + + /* Call a callback for every file defined in OBJFILE. FUN is the + callback. It is passed the file's name, the file's full name, + and the DATA passed to this function. */ + void (*map_symbol_filenames) (struct objfile *objfile, + void (*fun) (const char *, const char *, + void *), + void *data); +}; + /* Structure to keep track of symbol reading functions for various object file types. */ @@ -132,11 +302,10 @@ struct sym_fns void (*sym_init) (struct objfile *); - /* sym_read (objfile, mainline) Reads a symbol file into a psymtab + /* sym_read (objfile, symfile_flags) Reads a symbol file into a psymtab (or possibly a symtab). OBJFILE is the objfile struct for the - file we are reading. MAINLINE is 1 if this is the main symbol - table being read, and 0 if a secondary symbol file (e.g. shared - library or dynamically loaded file) is being read. */ + file we are reading. SYMFILE_FLAGS are the flags passed to + symbol_file_add & co. */ void (*sym_read) (struct objfile *, int); @@ -164,8 +333,19 @@ struct sym_fns /* This function should read the linetable from the objfile when the line table cannot be read while processing the debugging information. */ + void (*sym_read_linetable) (void); + /* Relocate the contents of a debug section SECTP. The + contents are stored in BUF if it is non-NULL, or returned in a + malloc'd buffer otherwise. */ + + bfd_byte *(*sym_relocate) (struct objfile *, asection *sectp, bfd_byte *buf); + + /* The "quick" (aka partial) symbol functions for this symbol + reader. */ + const struct quick_symbol_functions *qf; + /* Finds the next struct sym_fns. They are allocated and initialized in whatever module implements the functions pointed to; an initializer calls add_symtab_fns to add them to the global @@ -175,6 +355,16 @@ struct sym_fns }; +extern struct section_addr_info * + build_section_addr_info_from_objfile (const struct objfile *objfile); + +extern void relative_addr_info_to_section_offsets + (struct section_offsets *section_offsets, int num_sections, + struct section_addr_info *addrs); + +extern void addr_info_make_relative (struct section_addr_info *addrs, + bfd *abfd); + /* The default version of sym_fns.sym_offsets for readers that don't do anything special. */ @@ -186,28 +376,14 @@ extern void default_symfile_offsets (struct objfile *objfile, extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); -extern void extend_psymbol_list (struct psymbol_allocation_list *, - struct objfile *); - -/* Add any kind of symbol to a psymbol_allocation_list. */ - -/* #include "demangle.h" */ - -extern const -struct partial_symbol *add_psymbol_to_list (char *, int, int, domain_enum, - enum address_class, - struct psymbol_allocation_list *, - long, CORE_ADDR, - enum language, struct objfile *); - -extern void init_psymbol_list (struct objfile *, int); +/* The default version of sym_fns.sym_relocate for readers that don't + do anything special. */ -extern void sort_pst_symbols (struct partial_symtab *); +extern bfd_byte *default_symfile_relocate (struct objfile *objfile, + asection *sectp, bfd_byte *buf); extern struct symtab *allocate_symtab (char *, struct objfile *); -extern int free_named_symtabs (char *); - extern void add_symtab_fns (struct sym_fns *); /* This enum encodes bit-flags passed as ADD_FLAGS parameter to @@ -239,16 +415,15 @@ extern struct objfile *symbol_file_add_from_bfd (bfd *, int, struct section_addr_info *, int); +extern void symbol_file_add_separate (bfd *, int, struct objfile *); + +extern char *find_separate_debug_file_by_debuglink (struct objfile *); + /* Create a new section_addr_info, with room for NUM_SECTIONS. */ extern struct section_addr_info *alloc_section_addr_info (size_t num_sections); -/* Return a freshly allocated copy of ADDRS. The section names, if - any, are also freshly allocated copies of those in ADDRS. */ -extern struct section_addr_info *(copy_section_addr_info - (struct section_addr_info *addrs)); - /* Build (allocate and populate) a section_addr_info struct from an existing section table. */ @@ -264,23 +439,17 @@ extern struct section_addr_info extern void free_section_addr_info (struct section_addr_info *); -extern struct partial_symtab *start_psymtab_common (struct objfile *, - struct section_offsets *, - const char *, CORE_ADDR, - struct partial_symbol **, - struct partial_symbol **); - /* Make a copy of the string at PTR with SIZE characters in the symbol obstack (and add a null character at the end in the copy). Returns the address of the copy. */ extern char *obsavestring (const char *, int, struct obstack *); -/* Concatenate strings S1, S2 and S3; return the new string. Space is - found in the OBSTACKP */ +/* Concatenate NULL terminated variable argument list of `const char *' strings; + return the new string. Space is found in the OBSTACKP. Argument list must + be terminated by a sentinel expression `(char *) NULL'. */ -extern char *obconcat (struct obstack *obstackp, const char *, const char *, - const char *); +extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL; /* Variables */ @@ -309,15 +478,12 @@ extern int auto_solib_limit; extern void set_initial_language (void); -extern struct partial_symtab *allocate_psymtab (const char *, - struct objfile *); - -extern void discard_psymtab (struct partial_symtab *); - extern void find_lowest_section (bfd *, asection *, void *); extern bfd *symfile_bfd_open (char *); +extern bfd *bfd_open_maybe_remote (const char *); + extern int get_section_index (struct objfile *, char *); /* Utility functions for overlay sections: */ @@ -366,8 +532,8 @@ extern void symbol_file_clear (int from_tty); /* Default overlay update function. */ extern void simple_overlay_update (struct obj_section *); -extern bfd_byte *symfile_relocate_debug_section (bfd *abfd, asection *sectp, - bfd_byte * buf); +extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, + bfd_byte *); extern int symfile_map_offsets_to_segments (bfd *, struct symfile_segment_data *, @@ -376,10 +542,13 @@ extern int symfile_map_offsets_to_segments (bfd *, struct symfile_segment_data *get_symfile_segment_data (bfd *abfd); void free_symfile_segment_data (struct symfile_segment_data *data); +extern struct cleanup *increment_reading_symtab (void); + /* From dwarf2read.c */ extern int dwarf2_has_info (struct objfile *); +extern int dwarf2_initialize_objfile (struct objfile *); extern void dwarf2_build_psymtabs (struct objfile *); extern void dwarf2_build_frame_info (struct objfile *);