X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsymfile.h;h=7ae819c5e5b22418b5025989c58a28d942968c87;hb=567995e103055787c86c42096397015a55e02fd4;hp=467961b32eef55f0f28f09474b655721374ad769;hpb=1adeb98a32c1291fbc8cb812bdc8d39d221c6fe5;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/symfile.h b/gdb/symfile.h index 467961b32e..7ae819c5e5 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, 2000 + + Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, + 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, 2010 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, @@ -15,145 +17,197 @@ 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". */ - -/* 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. */ +#include "symtab.h" + +/* Opaque declarations. */ +struct target_section; +struct objfile; +struct obj_section; +struct obstack; +struct block; + +/* 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 64 -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 { + /* 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; 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; }; /* 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) (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) (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) (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. */ + /* 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_finish) (struct objfile *); + void (*sym_finish) (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. */ + /* 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. */ - void (*sym_offsets) (struct objfile *, struct section_addr_info *); + void (*sym_offsets) (struct objfile *, struct section_addr_info *); - /* 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 format-independent description of + the segments of ABFD. Each segment is a unit of the file + which may be relocated independently. */ - struct sym_fns *next; + 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); + + /* 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. */ + + struct sym_fns *next; + +}; + +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. */ -extern void -default_symfile_offsets (struct objfile *objfile, struct section_addr_info *); - +extern void default_symfile_offsets (struct objfile *objfile, + struct section_addr_info *); -extern void -extend_psymbol_list (struct psymbol_allocation_list *, struct objfile *); +/* The default version of sym_fns.sym_segments for readers that don't + do anything special. */ -/* Add any kind of symbol to a psymbol_allocation_list. */ +extern struct symfile_segment_data *default_symfile_segments (bfd *abfd); -/* #include "demangle.h" */ +extern void extend_psymbol_list (struct psymbol_allocation_list *, + struct objfile *); -extern void -add_psymbol_to_list (char *, int, namespace_enum, enum address_class, - struct psymbol_allocation_list *, long, CORE_ADDR, - enum language, struct objfile *); +/* Add any kind of symbol to a psymbol_allocation_list. */ -extern void -add_psymbol_with_dem_name_to_list (char *, int, char *, int, namespace_enum, - enum address_class, - struct psymbol_allocation_list *, - long, CORE_ADDR, - enum language, struct objfile *); +/* #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); @@ -163,149 +217,199 @@ extern struct symtab *allocate_symtab (char *, struct objfile *); extern int free_named_symtabs (char *); -extern void fill_in_vptr_fieldno (struct type *); - extern void add_symtab_fns (struct sym_fns *); -extern void init_entry_point_info (struct objfile *); +/* This enum encodes bit-flags passed as ADD_FLAGS parameter to + syms_from_objfile, symbol_file_add, etc. */ -extern void -syms_from_objfile (struct objfile *, struct section_addr_info *, int, int); +enum symfile_add_flags + { + /* Be chatty about what you are doing. */ + SYMFILE_VERBOSE = 1 << 1, -extern void new_symfile_objfile (struct objfile *, int, int); + /* This is the main symbol file (as opposed to symbol file for dynamically + loaded code). */ + SYMFILE_MAINLINE = 1 << 2, + + /* Do not call breakpoint_re_set when adding this symbol file. */ + SYMFILE_DEFER_BP_RESET = 1 << 3 + }; + +extern void syms_from_objfile (struct objfile *, + struct section_addr_info *, + struct section_offsets *, int, int); + +extern void new_symfile_objfile (struct objfile *, int); extern struct objfile *symbol_file_add (char *, int, - struct section_addr_info *, int, int); + struct section_addr_info *, int); -/* Build (allocate and populate) a section_addr_info struct from - an existing section table. */ +extern struct objfile *symbol_file_add_from_bfd (bfd *, int, + struct section_addr_info *, + 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 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. */ -/* Free all memory allocated by build_section_addr_info_from_section_table. */ +extern struct section_addr_info *alloc_section_addr_info (size_t + num_sections); -extern void -free_section_addr_info (struct section_addr_info *); +/* Build (allocate and populate) a section_addr_info struct from an + existing section table. */ + +extern struct section_addr_info + *build_section_addr_info_from_section_table (const struct target_section + *start, + const struct target_section + *end); + +/* Free all memory allocated by + build_section_addr_info_from_section_table. */ + +extern void free_section_addr_info (struct section_addr_info *); extern struct partial_symtab *start_psymtab_common (struct objfile *, struct section_offsets *, - char *, CORE_ADDR, + const char *, CORE_ADDR, struct partial_symbol **, struct partial_symbol **); -/* Sorting your symbols for fast lookup or alphabetical printing. */ - -extern void sort_block_syms (struct block *); +/* 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 void sort_symtab_syms (struct symtab *); +extern char *obsavestring (const char *, int, struct obstack *); -/* 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 (char *, int, struct obstack *); - -/* Concatenate strings S1, S2 and S3; return the new string. - Space is found in the symbol_obstack. */ +/* Concatenate strings S1, S2 and S3; return the new string. Space is + found in the OBSTACKP */ extern char *obconcat (struct obstack *obstackp, const char *, const char *, const char *); /* Variables */ -/* whether to auto load solibs at startup time: 0/1. - - On all platforms, 0 means "don't 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. */ - 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. +extern int auto_solib_add; - On other platforms, > 0 means, "always auto load". - */ +/* For systems that support it, a threshold size in megabytes. If + automatically adding a new library's symbol table to those already + known to the debugger would cause the total shared library symbol + size to exceed this threshhold, then the shlib's symbols are not + added. The threshold is ignored if the user explicitly asks for a + shlib to be added, such as when using the "sharedlibrary" command. */ -extern int auto_solib_add; +extern int auto_solib_limit; /* From symfile.c */ -extern CORE_ADDR entry_point_address (void); +extern void set_initial_language (void); -extern struct partial_symtab *allocate_psymtab (char *, struct objfile *); +extern struct partial_symtab *allocate_psymtab (const char *, + struct objfile *); extern void discard_psymtab (struct partial_symtab *); -extern void find_lowest_section (bfd *, asection *, PTR); +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: */ -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 (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 asection *find_pc_overlay (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 (asection *); +/* 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 (asection *); +/* Return true if the overlay section is currently "mapped". */ +extern int section_is_mapped (struct obj_section *); -/* return true if pc belongs to section's VMA */ -extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, asection *); +/* Return true if pc belongs to section's VMA. */ +extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, struct obj_section *); -/* return true if pc belongs to section's LMA */ -extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, asection *); +/* Return true if pc belongs to section's LMA. */ +extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, struct obj_section *); -/* map an address from a section's LMA to its VMA */ -extern CORE_ADDR overlay_mapped_address (CORE_ADDR, asection *); +/* Map an address from a section's LMA to its VMA. */ +extern CORE_ADDR overlay_mapped_address (CORE_ADDR, struct obj_section *); -/* map an address from a section's VMA to its LMA */ -extern CORE_ADDR overlay_unmapped_address (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 *); -/* convert an address in an overlay section (force into VMA range) */ -extern CORE_ADDR symbol_overlayed_address (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 *); -/* Load symbols from a file. */ +/* Load symbols from a file. */ extern void symbol_file_add_main (char *args, int from_tty); -/* Clear GDB symbol tables. */ +/* Clear GDB symbol tables. */ extern void symbol_file_clear (int from_tty); -/* From dwarfread.c */ +/* 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 void -dwarf_build_psymtabs (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); /* From dwarf2read.c */ -extern int dwarf2_has_info (bfd * abfd); +extern int dwarf2_has_info (struct objfile *); + +extern void dwarf2_build_psymtabs (struct objfile *); +extern void dwarf2_build_frame_info (struct objfile *); -extern void dwarf2_build_psymtabs (struct objfile *, int); +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 (struct objfile *, - const struct ecoff_debug_swap *, - struct ecoff_debug_info *); - -extern void -elfmdebug_build_psymtabs (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) */