X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsymfile.h;h=9c0bb752951c455c586a3b1083e32c982d249363;hb=251d32d96eb30422d48d270a0d55a02c0203f4c9;hp=5d3ee1de785a13d26dde9addc5e517ba244fbbbc;hpb=62557bbcee534198d6ff23d66d912ba256c94def;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/symfile.h b/gdb/symfile.h index 5d3ee1de78..9c0bb75295 100644 --- a/gdb/symfile.h +++ b/gdb/symfile.h @@ -1,12 +1,14 @@ /* Definitions for reading symbol files into GDB. - Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996 + + Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, + 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -15,320 +17,611 @@ 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + along with this program. If not, see . */ #if !defined (SYMFILE_H) #define SYMFILE_H /* This file requires that you first include "bfd.h". */ +#include "symtab.h" + +/* Opaque declarations. */ +struct target_section; +struct objfile; +struct obj_section; +struct obstack; +struct block; + +/* Comparison function for symbol look ups. */ + +typedef int (symbol_compare_ftype) (const char *string1, + const char *string2); -/* Partial symbols are stored in the psymbol_cache and pointers to them - are kept in a dynamically grown array that is obtained from malloc and - grown as necessary via realloc. Each objfile typically has two of these, - one for global symbols and one for static symbols. Although this adds - a level of indirection for storing or accessing the partial symbols, - it allows us to throw away duplicate psymbols and set all pointers - to the single saved instance. */ +/* Partial symbols are stored in the psymbol_cache and pointers to + them are kept in a dynamically grown array that is obtained from + malloc and grown as necessary via realloc. Each objfile typically + has two of these, one for global symbols and one for static + symbols. Although this adds a level of indirection for storing or + accessing the partial symbols, it allows us to throw away duplicate + psymbols and set all pointers to the single saved instance. */ struct psymbol_allocation_list - { +{ - /* Pointer to beginning of dynamically allocated array of pointers to - partial symbols. The array is dynamically expanded as necessary to - accommodate more pointers. */ + /* Pointer to beginning of dynamically allocated array of pointers + to partial symbols. The array is dynamically expanded as + necessary to accommodate more pointers. */ - struct partial_symbol **list; + struct partial_symbol **list; - /* Pointer to next available slot in which to store a pointer to a partial - symbol. */ + /* Pointer to next available slot in which to store a pointer to a + partial symbol. */ - struct partial_symbol **next; + struct partial_symbol **next; - /* Number of allocated pointer slots in current dynamic array (not the - number of bytes of storage). The "next" pointer will always point - somewhere between list[0] and list[size], and when at list[size] the - array will be expanded on the next attempt to store a pointer. */ + /* Number of allocated pointer slots in current dynamic array (not + the number of bytes of storage). The "next" pointer will always + point somewhere between list[0] and list[size], and when at + list[size] the array will be expanded on the next attempt to + store a pointer. */ - int size; - }; + int size; +}; /* Define an array of addresses to accommodate non-contiguous dynamic loading of modules. This is for use when entering commands, so we - can keep track of the section names until we read the file and - can map them to bfd sections. This structure is also used by - solib.c to communicate the section addresses in shared objects to - symbol_file_add (). */ - -#define MAX_SECTIONS 40 -struct section_addr_info + can keep track of the section names until we read the file and can + map them to bfd sections. This structure is also used by solib.c + to communicate the section addresses in shared objects to + symbol_file_add (). */ + +struct section_addr_info { - /* Sections whose names are always known to gdb. */ - CORE_ADDR text_addr; - CORE_ADDR data_addr; - CORE_ADDR bss_addr; - /* Sections whose names are file format dependant. */ + /* The number of sections for which address information is + available. */ + size_t num_sections; + /* Sections whose names are file format dependent. */ struct other_sections { CORE_ADDR addr; char *name; + + /* SECTINDEX must be valid for associated BFD or set to -1. */ int sectindex; - } other[MAX_SECTIONS]; + } other[1]; +}; + + +/* A table listing the load segments in a symfile, and which segment + each BFD section belongs to. */ +struct symfile_segment_data +{ + /* How many segments are present in this file. If there are + two, the text segment is the first one and the data segment + is the second one. */ + int num_segments; + + /* If NUM_SEGMENTS is greater than zero, the original base address + of each segment. */ + CORE_ADDR *segment_bases; + + /* If NUM_SEGMENTS is greater than zero, the memory size of each + segment. */ + CORE_ADDR *segment_sizes; + + /* If NUM_SEGMENTS is greater than zero, this is an array of entries + recording which segment contains each BFD section. + SEGMENT_INFO[I] is S+1 if the I'th BFD section belongs to segment + S, or zero if it is not in any segment. */ + 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, + enum block_enum block_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. + This is for the purposes of examining code only, e.g., expand_line_sal. + The routine may ignore debug info that is known to not be useful with + code, e.g., DW_TAG_type_unit for dwarf debug info. */ + 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); + + /* Find global or static symbols in all tables that are in NAMESPACE + and for which MATCH (symbol name, NAME) == 0, passing each to + CALLBACK, reading in partial symbol symbol tables as needed. Look + through global symbols if GLOBAL and otherwise static symbols. + Passes NAME, NAMESPACE, and DATA to CALLBACK with each symbol + found. After each block is processed, passes NULL to CALLBACK. + MATCH must be weaker than strcmp_iw in the sense that + strcmp_iw(x,y) == 0 --> MATCH(x,y) == 0. ORDERED_COMPARE, if + non-null, must be an ordering relation compatible with strcmp_iw + in the sense that + strcmp(x,y) == 0 --> ORDERED_COMPARE(x,y) == 0 + and + strcmp(x,y) <= 0 --> ORDERED_COMPARE(x,y) <= 0 + (allowing strcmp(x,y) < 0 while ORDERED_COMPARE(x, y) == 0). + CALLBACK returns 0 to indicate that the scan should continue, or + non-zero to indicate that the scan should be terminated. */ + + void (*map_matching_symbols) (const char *name, domain_enum namespace, + struct objfile *, int global, + int (*callback) (struct block *, + struct symbol *, void *), + void *data, + symbol_compare_ftype *match, + symbol_compare_ftype *ordered_compare); + + /* 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. If FILE_MATCHER is NULL such file is not skipped. + + Otherwise, if KIND does not match this symbol is skipped. + + If even KIND matches, 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, 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 *), + enum search_domain 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 file defined in OBJFILE whose symtab is + not already read in. 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. */ struct sym_fns - { +{ - /* BFD flavour that we handle, or (as a special kludge, see xcoffread.c, - (enum bfd_flavour)-1 for xcoff). */ + /* BFD flavour that we handle, or (as a special kludge, see + xcoffread.c, (enum bfd_flavour)-1 for xcoff). */ - enum bfd_flavour sym_flavour; + enum bfd_flavour sym_flavour; - /* Initializes anything that is global to the entire symbol table. It is - called during symbol_file_add, when we begin debugging an entirely new - program. */ + /* Initializes anything that is global to the entire symbol table. + It is called during symbol_file_add, when we begin debugging an + entirely new program. */ - void (*sym_new_init) PARAMS ((struct objfile *)); + void (*sym_new_init) (struct objfile *); - /* Reads any initial information from a symbol file, and initializes the - struct sym_fns SF in preparation for sym_read(). It is called every - time we read a symbol file for any reason. */ + /* Reads any initial information from a symbol file, and initializes + the struct sym_fns SF in preparation for sym_read(). It is + called every time we read a symbol file for any reason. */ - void (*sym_init) PARAMS ((struct objfile *)); + void (*sym_init) (struct objfile *); - /* sym_read (objfile, mainline) - 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. */ + /* 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. SYMFILE_FLAGS are the flags passed to + symbol_file_add & co. */ - void (*sym_read) PARAMS ((struct objfile *, int)); + void (*sym_read) (struct objfile *, int); - /* Called when we are finished with an objfile. Should do all cleanup - that is specific to the object file format for the particular objfile. */ + /* Read the partial symbols for an objfile. This may be NULL, in which case + gdb has to check other ways if this objfile has any symbols. This may + only be non-NULL if the objfile actually does have debuginfo available. + */ - void (*sym_finish) PARAMS ((struct objfile *)); + void (*sym_read_psymbols) (struct objfile *); - /* This function produces a file-dependent section_offsets structure, - allocated in the objfile's storage, and based on the parameter. - The parameter is currently a CORE_ADDR (FIXME!) for backward compatibility - with the higher levels of GDB. It should probably be changed to - a string, where NULL means the default, and others are parsed in a file - dependent way. */ + /* Called when we are finished with an objfile. Should do all + cleanup that is specific to the object file format for the + particular objfile. */ - void (*sym_offsets) PARAMS ((struct objfile *, struct section_addr_info *)); + void (*sym_finish) (struct objfile *); - /* 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 chain. */ + /* This function produces a file-dependent section_offsets + structure, allocated in the objfile's storage, and based on the + parameter. The parameter is currently a CORE_ADDR (FIXME!) for + backward compatibility with the higher levels of GDB. It should + probably be changed to a string, where NULL means the default, + and others are parsed in a file dependent way. */ - struct sym_fns *next; + void (*sym_offsets) (struct objfile *, struct section_addr_info *); - }; + /* This function produces a format-independent description of + the segments of ABFD. Each segment is a unit of the file + which may be relocated independently. */ -/* The default version of sym_fns.sym_offsets for readers that don't - do anything special. */ + struct symfile_segment_data *(*sym_segments) (bfd *abfd); + + /* 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); -extern void -default_symfile_offsets PARAMS ((struct objfile * objfile, struct section_addr_info *)); + /* The "quick" (aka partial) symbol functions for this symbol + reader. */ + const struct quick_symbol_functions *qf; +}; +extern struct section_addr_info * + build_section_addr_info_from_objfile (const struct objfile *objfile); -extern void -extend_psymbol_list PARAMS ((struct psymbol_allocation_list *, - struct objfile *)); +extern void relative_addr_info_to_section_offsets + (struct section_offsets *section_offsets, int num_sections, + struct section_addr_info *addrs); -/* Add any kind of symbol to a psymbol_allocation_list. */ +extern void addr_info_make_relative (struct section_addr_info *addrs, + bfd *abfd); -/* #include "demangle.h" */ +/* The default version of sym_fns.sym_offsets for readers that don't + do anything special. */ -extern void -add_psymbol_to_list PARAMS ((char *, int, namespace_enum, enum address_class, - struct psymbol_allocation_list *, long, CORE_ADDR, - enum language, struct objfile *)); +extern void default_symfile_offsets (struct objfile *objfile, + struct section_addr_info *); -extern void -add_psymbol_with_dem_name_to_list PARAMS ((char *, int, char *, int, namespace_enum, - enum address_class, - struct psymbol_allocation_list *, - long, CORE_ADDR, - enum language, struct objfile *)); +/* The default version of sym_fns.sym_segments for readers that don't + do anything special. */ +extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); -extern void init_psymbol_list PARAMS ((struct objfile *, int)); +/* The default version of sym_fns.sym_relocate for readers that don't + do anything special. */ -extern void -sort_pst_symbols PARAMS ((struct partial_symtab *)); +extern bfd_byte *default_symfile_relocate (struct objfile *objfile, + asection *sectp, bfd_byte *buf); -extern struct symtab * - allocate_symtab PARAMS ((char *, struct objfile *)); +extern struct symtab *allocate_symtab (const char *, struct objfile *); -extern int -free_named_symtabs PARAMS ((char *)); +extern void add_symtab_fns (const struct sym_fns *); -extern void -fill_in_vptr_fieldno PARAMS ((struct type *)); +/* This enum encodes bit-flags passed as ADD_FLAGS parameter to + syms_from_objfile, symbol_file_add, etc. */ -extern void -add_symtab_fns PARAMS ((struct sym_fns *)); +enum symfile_add_flags + { + /* Be chatty about what you are doing. */ + SYMFILE_VERBOSE = 1 << 1, -extern void -init_entry_point_info PARAMS ((struct objfile *)); + /* This is the main symbol file (as opposed to symbol file for dynamically + loaded code). */ + SYMFILE_MAINLINE = 1 << 2, -extern void -syms_from_objfile PARAMS ((struct objfile *, struct section_addr_info *, int, int)); + /* Do not call breakpoint_re_set when adding this symbol file. */ + SYMFILE_DEFER_BP_RESET = 1 << 3, -extern void -new_symfile_objfile PARAMS ((struct objfile *, int, int)); + /* Do not immediately read symbols for this file. By default, + symbols are read when the objfile is created. */ + SYMFILE_NO_READ = 1 << 4 + }; -extern struct objfile * -symbol_file_add PARAMS ((char *, int, struct section_addr_info *, int, int)); +extern void syms_from_objfile (struct objfile *, + struct section_addr_info *, + struct section_offsets *, int, int); -/* Build (allocate and populate) a section_addr_info struct from - an existing section table. */ +extern void new_symfile_objfile (struct objfile *, int); -struct section_table; -extern struct section_addr_info * -build_section_addr_info_from_section_table (const struct section_table *start, - const struct section_table *end); +extern struct objfile *symbol_file_add (char *, int, + struct section_addr_info *, int); -/* Free all memory allocated by build_section_addr_info_from_section_table. */ +extern struct objfile *symbol_file_add_from_bfd (bfd *, int, + struct section_addr_info *, + int, struct objfile *parent); -extern void -free_section_addr_info (struct section_addr_info *); +extern void symbol_file_add_separate (bfd *, int, struct objfile *); +extern char *find_separate_debug_file_by_debuglink (struct objfile *); -extern struct partial_symtab * - start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *, - char *, CORE_ADDR, - struct partial_symbol **, - struct partial_symbol **)); +/* Create a new section_addr_info, with room for NUM_SECTIONS. */ -/* Sorting your symbols for fast lookup or alphabetical printing. */ +extern struct section_addr_info *alloc_section_addr_info (size_t + num_sections); -extern void -sort_block_syms PARAMS ((struct block *)); +/* Build (allocate and populate) a section_addr_info struct from an + existing section table. */ -extern void -sort_symtab_syms PARAMS ((struct symtab *)); +extern struct section_addr_info + *build_section_addr_info_from_section_table (const struct target_section + *start, + const struct target_section + *end); -/* 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. */ +/* Free all memory allocated by + build_section_addr_info_from_section_table. */ -extern char * - obsavestring PARAMS ((char *, int, struct obstack *)); +extern void free_section_addr_info (struct section_addr_info *); -/* Concatenate strings S1, S2 and S3; return the new string. - Space is found in the symbol_obstack. */ -extern char * - obconcat PARAMS ((struct obstack * obstackp, const char *, const char *, - const char *)); +/* 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. */ - /* Variables */ +extern char *obsavestring (const char *, int, struct obstack *); -/* whether to auto load solibs at startup time: 0/1. +/* 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'. */ - On all platforms, 0 means "don't auto load". +extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL; - On HP-UX, > 0 means a threshhold, in megabytes, of symbol table which will - be auto loaded. When the cumulative size of solib symbol table exceeds - this threshhold, solibs' symbol tables will not be loaded. + /* Variables */ - On other platforms, > 0 means, "always auto load". - */ +/* If non-zero, shared library symbols will be added automatically + when the inferior is created, new libraries are loaded, or when + attaching to the inferior. This is almost always what users will + want to have happen; but for very large programs, the startup time + will be excessive, and so if this is a problem, the user can clear + this flag and then add the shared library symbols as needed. Note + that there is a potential for confusion, since if the shared + library symbols are not loaded, commands like "info fun" will *not* + report all the functions that are actually present. */ extern int auto_solib_add; /* From symfile.c */ -extern CORE_ADDR - entry_point_address PARAMS ((void)); +extern void set_initial_language (void); -extern struct partial_symtab * - allocate_psymtab PARAMS ((char *, struct objfile *)); +extern void find_lowest_section (bfd *, asection *, void *); -extern void -discard_psymtab PARAMS ((struct partial_symtab *)); +extern bfd *symfile_bfd_open (char *); -extern void find_lowest_section PARAMS ((bfd *, asection *, PTR)); +extern bfd *bfd_open_maybe_remote (const char *); -extern bfd *symfile_bfd_open PARAMS ((char *)); +extern int get_section_index (struct objfile *, char *); /* Utility functions for overlay sections: */ -extern int overlay_debugging; +extern enum overlay_debugging_state +{ + ovly_off, + ovly_on, + ovly_auto +} overlay_debugging; extern int overlay_cache_invalid; -/* return the "mapped" overlay section containing the PC */ -extern asection * - find_pc_mapped_section PARAMS ((CORE_ADDR)); +/* Return the "mapped" overlay section containing the PC. */ +extern struct obj_section *find_pc_mapped_section (CORE_ADDR); + +/* Return any overlay section containing the PC (even in its LMA + region). */ +extern struct obj_section *find_pc_overlay (CORE_ADDR); + +/* Return true if the section is an overlay. */ +extern int section_is_overlay (struct obj_section *); + +/* Return true if the overlay section is currently "mapped". */ +extern int section_is_mapped (struct obj_section *); -/* return any overlay section containing the PC (even in its LMA region) */ -extern asection * - find_pc_overlay PARAMS ((CORE_ADDR)); +/* Return true if pc belongs to section's VMA. */ +extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); -/* return true if the section is an overlay */ -extern int -section_is_overlay PARAMS ((asection *)); +/* Return true if pc belongs to section's LMA. */ +extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); -/* return true if the overlay section is currently "mapped" */ -extern int -section_is_mapped PARAMS ((asection *)); +/* Map an address from a section's LMA to its VMA. */ +extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); -/* return true if pc belongs to section's VMA */ -extern CORE_ADDR - pc_in_mapped_range PARAMS ((CORE_ADDR, asection *)); +/* Map an address from a section's VMA to its LMA. */ +extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, struct obj_section *); -/* return true if pc belongs to section's LMA */ -extern CORE_ADDR - pc_in_unmapped_range PARAMS ((CORE_ADDR, asection *)); +/* Convert an address in an overlay section (force into VMA range). */ +extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, struct obj_section *); -/* map an address from a section's LMA to its VMA */ -extern CORE_ADDR - overlay_mapped_address PARAMS ((CORE_ADDR, asection *)); +/* Load symbols from a file. */ +extern void symbol_file_add_main (char *args, int from_tty); -/* map an address from a section's VMA to its LMA */ -extern CORE_ADDR - overlay_unmapped_address PARAMS ((CORE_ADDR, asection *)); +/* Clear GDB symbol tables. */ +extern void symbol_file_clear (int from_tty); -/* convert an address in an overlay section (force into VMA range) */ -extern CORE_ADDR - symbol_overlayed_address PARAMS ((CORE_ADDR, asection *)); +/* Default overlay update function. */ +extern void simple_overlay_update (struct obj_section *); -/* From dwarfread.c */ +extern bfd_byte *symfile_relocate_debug_section (struct objfile *, asection *, + bfd_byte *); -extern void -dwarf_build_psymtabs PARAMS ((struct objfile *, int, file_ptr, unsigned int, - file_ptr, unsigned int)); +extern int symfile_map_offsets_to_segments (bfd *, + struct symfile_segment_data *, + struct section_offsets *, + int, const CORE_ADDR *); +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 PARAMS ((bfd * abfd)); +/* Names for a dwarf2 debugging section. The field NORMAL is the normal + section name (usually from the DWARF standard), while the field COMPRESSED + is the name of compressed sections. If your object file format doesn't + support compressed sections, the field COMPRESSED can be NULL. Likewise, + the debugging section is not supported, the field NORMAL can be NULL too. + It doesn't make sense to have a NULL NORMAL field but a non-NULL COMPRESSED + field. */ + +struct dwarf2_section_names { + const char *normal; + const char *compressed; +}; + +/* List of names for dward2 debugging sections. Also most object file formats + use the standardized (ie ELF) names, some (eg XCOFF) have customized names + due to restrictions. + The table for the standard names is defined in dwarf2read.c. Please + update all instances of dwarf2_debug_sections if you add a field to this + structure. It is always safe to use { NULL, NULL } in this case. */ + +struct dwarf2_debug_sections { + struct dwarf2_section_names info; + struct dwarf2_section_names abbrev; + struct dwarf2_section_names line; + struct dwarf2_section_names loc; + struct dwarf2_section_names macinfo; + struct dwarf2_section_names str; + struct dwarf2_section_names ranges; + struct dwarf2_section_names types; + struct dwarf2_section_names frame; + struct dwarf2_section_names eh_frame; + struct dwarf2_section_names gdb_index; +}; + +extern int dwarf2_has_info (struct objfile *, + const struct dwarf2_debug_sections *); + +/* Dwarf2 sections that can be accessed by dwarf2_get_section_info. */ +enum dwarf2_section_enum { + DWARF2_DEBUG_FRAME, + DWARF2_EH_FRAME +}; + +extern void dwarf2_get_section_info (struct objfile *, + enum dwarf2_section_enum, + asection **, gdb_byte **, + bfd_size_type *); -extern void dwarf2_build_psymtabs PARAMS ((struct objfile *, int)); +extern int dwarf2_initialize_objfile (struct objfile *); +extern void dwarf2_build_psymtabs (struct objfile *); +extern void dwarf2_build_frame_info (struct objfile *); + +void dwarf2_free_objfile (struct objfile *); /* From mdebugread.c */ /* Hack to force structures to exist before use in parameter list. */ struct ecoff_debug_hack - { - struct ecoff_debug_swap *a; - struct ecoff_debug_info *b; - }; -extern void -mdebug_build_psymtabs PARAMS ((struct objfile *, - const struct ecoff_debug_swap *, - struct ecoff_debug_info *)); - -extern void -elfmdebug_build_psymtabs PARAMS ((struct objfile *, - const struct ecoff_debug_swap *, - asection *)); +{ + struct ecoff_debug_swap *a; + struct ecoff_debug_info *b; +}; + +extern void mdebug_build_psymtabs (struct objfile *, + const struct ecoff_debug_swap *, + struct ecoff_debug_info *); + +extern void elfmdebug_build_psymtabs (struct objfile *, + const struct ecoff_debug_swap *, + asection *); #endif /* !defined(SYMFILE_H) */