/* Definitions for reading symbol files into GDB.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001
+
+ 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,
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 <http://www.gnu.org/licenses/>. */
#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;
+
+ /* SECTINDEX must be valid for associated BFD if ADDR is not zero. */
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);
+
+ /* 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);
+
+ /* 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 *);
+
+/* 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
-extend_psymbol_list (struct psymbol_allocation_list *, struct objfile *);
+/* The default version of sym_fns.sym_relocate for readers that don't
+ do anything special. */
-/* Add any kind of symbol to a psymbol_allocation_list. */
+extern bfd_byte *default_symfile_relocate (struct objfile *objfile,
+ asection *sectp, bfd_byte *buf);
-/* #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);
extern struct symtab *allocate_symtab (char *, struct objfile *);
-extern int free_named_symtabs (char *);
+extern void add_symtab_fns (struct sym_fns *);
-extern void fill_in_vptr_fieldno (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 (struct sym_fns *);
+enum symfile_add_flags
+ {
+ /* Be chatty about what you are doing. */
+ SYMFILE_VERBOSE = 1 << 1,
+
+ /* This is the main symbol file (as opposed to symbol file for dynamically
+ loaded code). */
+ SYMFILE_MAINLINE = 1 << 2,
-extern void init_entry_point_info (struct objfile *);
+ /* 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 *, int, int);
+extern void syms_from_objfile (struct objfile *,
+ struct section_addr_info *,
+ struct section_offsets *, int, int);
-extern void new_symfile_objfile (struct objfile *, 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. */
+
+extern struct section_addr_info *alloc_section_addr_info (size_t
+ num_sections);
+
+/* 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. */
+/* Free all memory allocated by
+ build_section_addr_info_from_section_table. */
-extern void
-free_section_addr_info (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 *,
- char *, CORE_ADDR,
+ const char *, CORE_ADDR,
struct partial_symbol **,
struct partial_symbol **);
-/* Sorting your symbols for fast lookup or alphabetical printing. */
+/* 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_block_syms (struct block *);
+extern char *obsavestring (const char *, int, struct obstack *);
-extern void sort_symtab_syms (struct symtab *);
-
-/* 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 *);
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. */
+ report all the functions that are actually present. */
extern int auto_solib_add;
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. */
+ shlib to be added, such as when using the "sharedlibrary" command. */
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 (struct objfile *, asection *,
+ bfd_byte *);
-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 *, int);
+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 (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) */
projects / deliverable / binutils-gdb.git / blobdiff