/* Definitions for symbol file management in GDB.
- Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
-This file is part of GDB.
+ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
+ 2002, 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
-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
-(at your option) any later version.
+ This file is part of GDB.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ 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 3 of the License, or
+ (at your option) any later version.
-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. */
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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, see <http://www.gnu.org/licenses/>. */
#if !defined (OBJFILES_H)
#define OBJFILES_H
+#include "gdb_obstack.h" /* For obstack internals. */
+#include "symfile.h" /* For struct psymbol_allocation_list */
+#include "progspace.h"
+
+struct bcache;
+struct htab;
+struct symtab;
+struct objfile_data;
+
/* This structure maintains information on a per-objfile basis about the
"entry point" of the objfile, and the scope within which the entry point
exists. It is possible that gdb will see more than one objfile that is
to the user executable's recorded entry point, as if the call had been made
directly by the kernel.
- The traditional gdb method of using this info is to use the recorded entry
- point to set the variables entry_file_lowpc and entry_file_highpc from
- the debugging information, where these values are the starting address
- (inclusive) and ending address (exclusive) of the instruction space in the
- executable which correspond to the "startup file", I.E. crt0.o in most
- cases. This file is assumed to be a startup file and frames with pc's
- inside it are treated as nonexistent. Setting these variables is necessary
- so that backtraces do not fly off the bottom of the stack.
+ The traditional gdb method of using this info was to use the
+ recorded entry point to set the entry-file's lowpc and highpc from
+ the debugging information, where these values are the starting
+ address (inclusive) and ending address (exclusive) of the
+ instruction space in the executable which correspond to the
+ "startup file", I.E. crt0.o in most cases. This file is assumed to
+ be a startup file and frames with pc's inside it are treated as
+ nonexistent. Setting these variables is necessary so that
+ backtraces do not fly off the bottom of the stack.
+
+ NOTE: cagney/2003-09-09: It turns out that this "traditional"
+ method doesn't work. Corinna writes: ``It turns out that the call
+ to test for "inside entry file" destroys a meaningful backtrace
+ under some conditions. E. g. the backtrace tests in the asm-source
+ testcase are broken for some targets. In this test the functions
+ are all implemented as part of one file and the testcase is not
+ necessarily linked with a start file (depending on the target).
+ What happens is, that the first frame is printed normaly and
+ following frames are treated as being inside the enttry file then.
+ This way, only the #0 frame is printed in the backtrace output.''
+ Ref "frame.c" "NOTE: vinschen/2003-04-01".
Gdb also supports an alternate method to avoid running off the bottom
of the stack.
confused. However, we almost always have debugging information
available for main().
- These variables are used to save the range of PC values which are valid
- within the main() function and within the function containing the process
- entry point. If we always consider the frame for main() as the outermost
- frame when debugging user code, and the frame for the process entry
- point function as the outermost frame when debugging startup code, then
- all we have to do is have FRAME_CHAIN_VALID return false whenever a
- frame's current PC is within the range specified by these variables.
- In essence, we set "ceilings" in the frame chain beyond which we will
+ These variables are used to save the range of PC values which are
+ valid within the main() function and within the function containing
+ the process entry point. If we always consider the frame for
+ main() as the outermost frame when debugging user code, and the
+ frame for the process entry point function as the outermost frame
+ when debugging startup code, then all we have to do is have
+ DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's
+ current PC is within the range specified by these variables. In
+ essence, we set "ceilings" in the frame chain beyond which we will
not proceed when following the frame chain back up the stack.
A nice side effect is that we can still debug startup code without
use the block at main, or can't find it for some reason, everything
still works as before. And if we have no startup code debugging
information but we do have usable information for main(), backtraces
- from user code don't go wandering off into the startup code.
-
- To use this method, define your FRAME_CHAIN_VALID macro like:
-
- #define FRAME_CHAIN_VALID(chain, thisframe) \
- (chain != 0 \
- && !(inside_main_func ((thisframe)->pc)) \
- && !(inside_entry_func ((thisframe)->pc)))
-
- and add initializations of the four scope controlling variables inside
- the object file / debugging information processing modules. */
+ from user code don't go wandering off into the startup code. */
struct entry_info
-{
-
- /* The value we should use for this objects entry point.
- The illegal/unknown value needs to be something other than 0, ~0
- for instance, which is much less likely than 0. */
-
- CORE_ADDR entry_point;
-
-#define INVALID_ENTRY_POINT (~0) /* ~0 will not be in any file, we hope. */
-
- /* Start (inclusive) and end (exclusive) of function containing the
- entry point. */
-
- CORE_ADDR entry_func_lowpc;
- CORE_ADDR entry_func_highpc;
-
- /* Start (inclusive) and end (exclusive) of object file containing the
- entry point. */
-
- CORE_ADDR entry_file_lowpc;
- CORE_ADDR entry_file_highpc;
-
- /* Start (inclusive) and end (exclusive) of the user code main() function. */
-
- CORE_ADDR main_func_lowpc;
- CORE_ADDR main_func_highpc;
-
-/* Use these values when any of the above ranges is invalid. */
-
-/* We use these values because it guarantees that there is no number that is
- both >= LOWPC && < HIGHPC. It is also highly unlikely that 3 is a valid
- module or function start address (as opposed to 0). */
-
-#define INVALID_ENTRY_LOWPC (3)
-#define INVALID_ENTRY_HIGHPC (1)
-
-};
+ {
+ /* The relocated value we should use for this objfile entry point. */
+ CORE_ADDR entry_point;
-/* Sections in an objfile.
+ /* Set to 1 iff ENTRY_POINT contains a valid value. */
+ unsigned entry_point_p : 1;
+ };
- It is strange that we have both this notion of "sections"
- and the one used by section_offsets. Section as used
- here, (currently at least) means a BFD section, and the sections
- are set up from the BFD sections in allocate_objfile.
+/* Sections in an objfile. The section offsets are stored in the
+ OBJFILE. */
- The sections in section_offsets have their meaning determined by
- the symbol format, and they are set up by the sym_offsets function
- for that symbol file format.
+struct obj_section
+ {
+ struct bfd_section *the_bfd_section; /* BFD section pointer */
- I'm not sure this could or should be changed, however. */
+ /* Objfile this section is part of. */
+ struct objfile *objfile;
-struct obj_section {
- CORE_ADDR addr; /* lowest address in section */
- CORE_ADDR endaddr; /* 1+highest address in section */
+ /* True if this "overlay section" is mapped into an "overlay region". */
+ int ovly_mapped;
+ };
- /* This field is being used for nefarious purposes by syms_from_objfile.
- It is said to be redundant with section_offsets; it's not really being
- used that way, however, it's some sort of hack I don't understand
- and am not going to try to eliminate (yet, anyway). FIXME.
+/* Relocation offset applied to S. */
+#define obj_section_offset(s) \
+ (((s)->objfile->section_offsets)->offsets[(s)->the_bfd_section->index])
- It was documented as "offset between (end)addr and actual memory
- addresses", but that's not true; addr & endaddr are actual memory
- addresses. */
- CORE_ADDR offset;
+/* The memory address of section S (vma + offset). */
+#define obj_section_addr(s) \
+ (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \
+ + obj_section_offset (s))
- sec_ptr the_bfd_section; /* BFD section pointer */
-
- /* Objfile this section is part of. */
- struct objfile *objfile;
-};
+/* The one-passed-the-end memory address of section S
+ (vma + size + offset). */
+#define obj_section_endaddr(s) \
+ (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \
+ + bfd_get_section_size ((s)->the_bfd_section) \
+ + obj_section_offset (s))
/* The "objstats" structure provides a place for gdb to record some
interesting information about its internal state at runtime, on a
per objfile basis, such as information about the number of symbols
read, size of string table (if any), etc. */
-#if MAINTENANCE_CMDS
-
-struct objstats {
- int n_minsyms; /* Number of minimal symbols read */
- int n_psyms; /* Number of partial symbols read */
- int n_syms; /* Number of full symbols read */
- int n_stabs; /* Number of ".stabs" read (if applicable) */
- int n_types; /* Number of types */
- int sz_strtab; /* Size of stringtable, (if applicable) */
-};
+struct objstats
+ {
+ int n_minsyms; /* Number of minimal symbols read */
+ int n_psyms; /* Number of partial symbols read */
+ int n_syms; /* Number of full symbols read */
+ int n_stabs; /* Number of ".stabs" read (if applicable) */
+ int n_types; /* Number of types */
+ int sz_strtab; /* Size of stringtable, (if applicable) */
+ };
#define OBJSTAT(objfile, expr) (objfile -> stats.expr)
#define OBJSTATS struct objstats stats
-extern void print_objfile_statistics PARAMS ((void));
-extern void print_symbol_bcache_statistics PARAMS ((void));
-
-#else
-
-#define OBJSTAT(objfile, expr) /* Nothing */
-#define OBJSTATS /* Nothing */
+extern void print_objfile_statistics (void);
+extern void print_symbol_bcache_statistics (void);
-#endif /* MAINTENANCE_CMDS */
+/* Number of entries in the minimal symbol hash table. */
+#define MINIMAL_SYMBOL_HASH_SIZE 2039
/* Master structure for keeping track of each file from which
gdb reads symbols. There are several ways these get allocated: 1.
(see remote-vx.c). */
struct objfile
-{
+ {
- /* All struct objfile's are chained together by their next pointers.
- The global variable "object_files" points to the first link in this
- chain.
+ /* All struct objfile's are chained together by their next pointers.
+ The global variable "object_files" points to the first link in this
+ chain.
- FIXME: There is a problem here if the objfile is reusable, and if
- multiple users are to be supported. The problem is that the objfile
- list is linked through a member of the objfile struct itself, which
- is only valid for one gdb process. The list implementation needs to
- be changed to something like:
+ FIXME: There is a problem here if the objfile is reusable, and if
+ multiple users are to be supported. The problem is that the objfile
+ list is linked through a member of the objfile struct itself, which
+ is only valid for one gdb process. The list implementation needs to
+ be changed to something like:
- struct list {struct list *next; struct objfile *objfile};
+ struct list {struct list *next; struct objfile *objfile};
- where the list structure is completely maintained separately within
- each gdb process. */
+ where the list structure is completely maintained separately within
+ each gdb process. */
- struct objfile *next;
+ struct objfile *next;
- /* The object file's name. Malloc'd; free it if you free this struct. */
+ /* The object file's name, tilde-expanded and absolute.
+ Malloc'd; free it if you free this struct. */
- char *name;
+ char *name;
- /* Some flag bits for this objfile. */
+ /* Some flag bits for this objfile. */
- unsigned short flags;
+ unsigned short flags;
- /* Each objfile points to a linked list of symtabs derived from this file,
- one symtab structure for each compilation unit (source file). Each link
- in the symtab list contains a backpointer to this objfile. */
+ /* The program space associated with this objfile. */
- struct symtab *symtabs;
+ struct program_space *pspace;
- /* Each objfile points to a linked list of partial symtabs derived from
- this file, one partial symtab structure for each compilation unit
- (source file). */
+ /* Each objfile points to a linked list of symtabs derived from this file,
+ one symtab structure for each compilation unit (source file). Each link
+ in the symtab list contains a backpointer to this objfile. */
- struct partial_symtab *psymtabs;
+ struct symtab *symtabs;
- /* List of freed partial symtabs, available for re-use */
+ /* Each objfile points to a linked list of partial symtabs derived from
+ this file, one partial symtab structure for each compilation unit
+ (source file). */
- struct partial_symtab *free_psymtabs;
+ struct partial_symtab *psymtabs;
- /* The object file's BFD. Can be null if the objfile contains only
- minimal symbols, e.g. the run time common symbols for SunOS4. */
+ /* Map addresses to the entries of PSYMTABS. It would be more efficient to
+ have a map per the whole process but ADDRMAP cannot selectively remove
+ its items during FREE_OBJFILE. This mapping is already present even for
+ PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */
- bfd *obfd;
+ struct addrmap *psymtabs_addrmap;
- /* The modification timestamp of the object file, as of the last time
- we read its symbols. */
+ /* List of freed partial symtabs, available for re-use */
- long mtime;
+ struct partial_symtab *free_psymtabs;
- /* Obstacks to hold objects that should be freed when we load a new symbol
- table from this object file. */
+ /* The object file's BFD. Can be null if the objfile contains only
+ minimal symbols, e.g. the run time common symbols for SunOS4. */
- struct obstack psymbol_obstack; /* Partial symbols */
- struct obstack symbol_obstack; /* Full symbols */
- struct obstack type_obstack; /* Types */
+ bfd *obfd;
- /* A byte cache where we can stash arbitrary "chunks" of bytes that
- will not change. */
+ /* The gdbarch associated with the BFD. Note that this gdbarch is
+ determined solely from BFD information, without looking at target
+ information. The gdbarch determined from a running target may
+ differ from this e.g. with respect to register types and names. */
- struct bcache psymbol_cache; /* Byte cache for partial syms */
+ struct gdbarch *gdbarch;
- /* Vectors of all partial symbols read in from file. The actual data
- is stored in the psymbol_obstack. */
+ /* The modification timestamp of the object file, as of the last time
+ we read its symbols. */
- struct psymbol_allocation_list global_psymbols;
- struct psymbol_allocation_list static_psymbols;
+ long mtime;
- /* Each file contains a pointer to an array of minimal symbols for all
- global symbols that are defined within the file. The array is terminated
- by a "null symbol", one that has a NULL pointer for the name and a zero
- value for the address. This makes it easy to walk through the array
- when passed a pointer to somewhere in the middle of it. There is also
- a count of the number of symbols, which does not include the terminating
- null symbol. The array itself, as well as all the data that it points
- to, should be allocated on the symbol_obstack for this file. */
+ /* Obstack to hold objects that should be freed when we load a new symbol
+ table from this object file. */
- struct minimal_symbol *msymbols;
- int minimal_symbol_count;
+ struct obstack objfile_obstack;
- /* For object file formats which don't specify fundamental types, gdb
- can create such types. For now, it maintains a vector of pointers
- to these internally created fundamental types on a per objfile basis,
- however it really should ultimately keep them on a per-compilation-unit
- basis, to account for linkage-units that consist of a number of
- compilation units that may have different fundamental types, such as
- linking C modules with ADA modules, or linking C modules that are
- compiled with 32-bit ints with C modules that are compiled with 64-bit
- ints (not inherently evil with a smarter linker). */
+ /* A byte cache where we can stash arbitrary "chunks" of bytes that
+ will not change. */
- struct type **fundamental_types;
+ struct bcache *psymbol_cache; /* Byte cache for partial syms */
+ struct bcache *macro_cache; /* Byte cache for macros */
+ struct bcache *filename_cache; /* Byte cache for file names. */
- /* The mmalloc() malloc-descriptor for this objfile if we are using
- the memory mapped malloc() package to manage storage for this objfile's
- data. NULL if we are not. */
+ /* Hash table for mapping symbol names to demangled names. Each
+ entry in the hash table is actually two consecutive strings,
+ both null-terminated; the first one is a mangled or linkage
+ name, and the second is the demangled name or just a zero byte
+ if the name doesn't demangle. */
+ struct htab *demangled_names_hash;
- PTR md;
+ /* Vectors of all partial symbols read in from file. The actual data
+ is stored in the objfile_obstack. */
- /* The file descriptor that was used to obtain the mmalloc descriptor
- for this objfile. If we call mmalloc_detach with the malloc descriptor
- we should then close this file descriptor. */
+ struct psymbol_allocation_list global_psymbols;
+ struct psymbol_allocation_list static_psymbols;
- int mmfd;
+ /* Each file contains a pointer to an array of minimal symbols for all
+ global symbols that are defined within the file. The array is terminated
+ by a "null symbol", one that has a NULL pointer for the name and a zero
+ value for the address. This makes it easy to walk through the array
+ when passed a pointer to somewhere in the middle of it. There is also
+ a count of the number of symbols, which does not include the terminating
+ null symbol. The array itself, as well as all the data that it points
+ to, should be allocated on the objfile_obstack for this file. */
- /* Structure which keeps track of functions that manipulate objfile's
- of the same type as this objfile. I.E. the function to read partial
- symbols for example. Note that this structure is in statically
- allocated memory, and is shared by all objfiles that use the
- object module reader of this type. */
+ struct minimal_symbol *msymbols;
+ int minimal_symbol_count;
- struct sym_fns *sf;
+ /* This is a hash table used to index the minimal symbols by name. */
- /* The per-objfile information about the entry point, the scope (file/func)
- containing the entry point, and the scope of the user's main() func. */
+ struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE];
- struct entry_info ei;
+ /* This hash table is used to index the minimal symbols by their
+ demangled names. */
- /* Information about stabs. Will be filled in with a dbx_symfile_info
- struct by those readers that need it. */
+ struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE];
- struct dbx_symfile_info *sym_stab_info;
+ /* Structure which keeps track of functions that manipulate objfile's
+ of the same type as this objfile. I.E. the function to read partial
+ symbols for example. Note that this structure is in statically
+ allocated memory, and is shared by all objfiles that use the
+ object module reader of this type. */
- /* Hook for information for use by the symbol reader (currently used
- for information shared by sym_init and sym_read). It is
- typically a pointer to malloc'd memory. The symbol reader's finish
- function is responsible for freeing the memory thusly allocated. */
+ struct sym_fns *sf;
- PTR sym_private;
+ /* The per-objfile information about the entry point, the scope (file/func)
+ containing the entry point, and the scope of the user's main() func. */
- /* Hook for target-architecture-specific information. This must
- point to memory allocated on one of the obstacks in this objfile,
- so that it gets freed automatically when reading a new object
- file. */
+ struct entry_info ei;
- PTR obj_private;
+ /* Information about stabs. Will be filled in with a dbx_symfile_info
+ struct by those readers that need it. */
+ /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile
+ data points implemented using "data" and "num_data" below. For
+ an example of how to use this replacement, see "objfile_data"
+ in "mips-tdep.c". */
- /* Set of relocation offsets to apply to each section.
- Currently on the psymbol_obstack (which makes no sense, but I'm
- not sure it's harming anything).
+ struct dbx_symfile_info *deprecated_sym_stab_info;
- These offsets indicate that all symbols (including partial and
- minimal symbols) which have been read have been relocated by this
- much. Symbols which are yet to be read need to be relocated by
- it. */
+ /* Hook for information for use by the symbol reader (currently used
+ for information shared by sym_init and sym_read). It is
+ typically a pointer to malloc'd memory. The symbol reader's finish
+ function is responsible for freeing the memory thusly allocated. */
+ /* NOTE: cagney/2004-10-23: This has been replaced by per-objfile
+ data points implemented using "data" and "num_data" below. For
+ an example of how to use this replacement, see "objfile_data"
+ in "mips-tdep.c". */
- struct section_offsets *section_offsets;
- int num_sections;
+ void *deprecated_sym_private;
- /* set of section begin and end addresses used to map pc addresses
- into sections. Currently on the psymbol_obstack (which makes no
- sense, but I'm not sure it's harming anything). */
+ /* Per objfile data-pointers required by other GDB modules. */
+ /* FIXME: kettenis/20030711: This mechanism could replace
+ deprecated_sym_stab_info and deprecated_sym_private
+ entirely. */
- struct obj_section
- *sections,
- *sections_end;
+ void **data;
+ unsigned num_data;
- /* two auxiliary fields, used to hold the fp of separate symbol files */
- FILE *auxf1, *auxf2;
+ /* Set of relocation offsets to apply to each section.
+ Currently on the objfile_obstack (which makes no sense, but I'm
+ not sure it's harming anything).
- /* Place to stash various statistics about this objfile */
- OBJSTATS;
-};
+ These offsets indicate that all symbols (including partial and
+ minimal symbols) which have been read have been relocated by this
+ much. Symbols which are yet to be read need to be relocated by
+ it. */
-/* Defines for the objfile flag word. */
-
-/* Gdb can arrange to allocate storage for all objects related to a
- particular objfile in a designated section of its address space,
- managed at a low level by mmap() and using a special version of
- malloc that handles malloc/free/realloc on top of the mmap() interface.
- This allows the "internal gdb state" for a particular objfile to be
- dumped to a gdb state file and subsequently reloaded at a later time. */
+ struct section_offsets *section_offsets;
+ int num_sections;
+
+ /* Indexes in the section_offsets array. These are initialized by the
+ *_symfile_offsets() family of functions (som_symfile_offsets,
+ xcoff_symfile_offsets, default_symfile_offsets). In theory they
+ should correspond to the section indexes used by bfd for the
+ current objfile. The exception to this for the time being is the
+ SOM version. */
+
+ int sect_index_text;
+ int sect_index_data;
+ int sect_index_bss;
+ int sect_index_rodata;
+
+ /* These pointers are used to locate the section table, which
+ among other things, is used to map pc addresses into sections.
+ SECTIONS points to the first entry in the table, and
+ SECTIONS_END points to the first location past the last entry
+ in the table. Currently the table is stored on the
+ objfile_obstack (which makes no sense, but I'm not sure it's
+ harming anything). */
+
+ struct obj_section
+ *sections, *sections_end;
+
+ /* Link to objfile that contains the debug symbols for this one.
+ One is loaded if this file has an debug link to an existing
+ debug file with the right checksum */
+ struct objfile *separate_debug_objfile;
+
+ /* If this is a separate debug object, this is used as a link to the
+ actual executable objfile. */
+ struct objfile *separate_debug_objfile_backlink;
+
+ /* Place to stash various statistics about this objfile */
+ OBJSTATS;
-#define OBJF_MAPPED (1 << 0) /* Objfile data is mmap'd */
+ /* A symtab that the C++ code uses to stash special symbols
+ associated to namespaces. */
-/* When using mapped/remapped predigested gdb symbol information, we need
- a flag that indicates that we have previously done an initial symbol
- table read from this particular objfile. We can't just look for the
- absence of any of the three symbol tables (msymbols, psymtab, symtab)
- because if the file has no symbols for example, none of these will
- exist. */
+ /* FIXME/carlton-2003-06-27: Delete this in a few years once
+ "possible namespace symbols" go away. */
+ struct symtab *cp_namespace_symtab;
+ };
-#define OBJF_SYMS (1 << 1) /* Have tried to read symbols */
+/* Defines for the objfile flag word. */
/* When an object file has its functions reordered (currently Irix-5.2
shared libraries exhibit this behaviour), we will need an expensive
To avoid this penalty for normal object files, we use this flag,
whose setting is determined upon symbol table read in. */
-#define OBJF_REORDERED (2 << 1) /* Functions are reordered */
+#define OBJF_REORDERED (1 << 0) /* Functions are reordered */
+
+/* Distinguish between an objfile for a shared library and a "vanilla"
+ objfile. (If not set, the objfile may still actually be a solib.
+ This can happen if the user created the objfile by using the
+ add-symbol-file command. GDB doesn't in that situation actually
+ check whether the file is a solib. Rather, the target's
+ implementation of the solib interface is responsible for setting
+ this flag when noticing solibs used by an inferior.) */
-/* The object file that the main symbol table was loaded from (e.g. the
- argument to the "symbol-file" or "file" command). */
+#define OBJF_SHARED (1 << 1) /* From a shared library */
-extern struct objfile *symfile_objfile;
+/* User requested that this objfile be read in it's entirety. */
+
+#define OBJF_READNOW (1 << 2) /* Immediate full read */
+
+/* This objfile was created because the user explicitly caused it
+ (e.g., used the add-symbol-file command). This bit offers a way
+ for run_command to remove old objfile entries which are no longer
+ valid (i.e., are associated with an old inferior), but to preserve
+ ones that the user explicitly loaded via the add-symbol-file
+ command. */
+
+#define OBJF_USERLOADED (1 << 3) /* User loaded */
/* The object file that contains the runtime common minimal symbols
for SunOS4. Note that this objfile has no associated BFD. */
extern struct objfile *rt_common_objfile;
-/* When we need to allocate a new type, we need to know which type_obstack
+/* When we need to allocate a new type, we need to know which objfile_obstack
to allocate the type on, since there is one for each objfile. The places
where types are allocated are deeply buried in function call hierarchies
which know nothing about objfiles, so rather than trying to pass a
extern struct objfile *current_objfile;
-/* All known objfiles are kept in a linked list. This points to the
- root of this list. */
+/* Declarations for functions defined in objfiles.c */
+
+extern struct objfile *allocate_objfile (bfd *, int);
-extern struct objfile *object_files;
+extern struct gdbarch *get_objfile_arch (struct objfile *);
-/* Declarations for functions defined in objfiles.c */
+extern void init_entry_point_info (struct objfile *);
+
+extern int entry_point_address_query (CORE_ADDR *entry_p);
+
+extern CORE_ADDR entry_point_address (void);
-extern struct objfile *
-allocate_objfile PARAMS ((bfd *, int));
+extern int build_objfile_section_table (struct objfile *);
-extern int
-build_objfile_section_table PARAMS ((struct objfile *));
+extern void terminate_minimal_symbol_table (struct objfile *objfile);
-extern void objfile_to_front PARAMS ((struct objfile *));
+extern void put_objfile_before (struct objfile *, struct objfile *);
-extern void
-unlink_objfile PARAMS ((struct objfile *));
+extern void objfile_to_front (struct objfile *);
-extern void
-free_objfile PARAMS ((struct objfile *));
+extern void unlink_objfile (struct objfile *);
-extern void
-free_all_objfiles PARAMS ((void));
+extern void free_objfile (struct objfile *);
-extern void
-objfile_relocate PARAMS ((struct objfile *, struct section_offsets *));
+extern struct cleanup *make_cleanup_free_objfile (struct objfile *);
-extern int
-have_partial_symbols PARAMS ((void));
+extern void free_all_objfiles (void);
-extern int
-have_full_symbols PARAMS ((void));
+extern void objfile_relocate (struct objfile *, struct section_offsets *);
+
+extern int objfile_has_partial_symbols (struct objfile *objfile);
+
+extern int objfile_has_full_symbols (struct objfile *objfile);
+
+extern int objfile_has_symbols (struct objfile *objfile);
+
+extern int have_partial_symbols (void);
+
+extern int have_full_symbols (void);
+
+extern void objfiles_changed (void);
+
+/* This operation deletes all objfile entries that represent solibs that
+ weren't explicitly loaded by the user, via e.g., the add-symbol-file
+ command.
+ */
+extern void objfile_purge_solibs (void);
/* Functions for dealing with the minimal symbol table, really a misc
address<->symbol mapping for things we don't have debug symbols for. */
-extern int
-have_minimal_symbols PARAMS ((void));
+extern int have_minimal_symbols (void);
+
+extern struct obj_section *find_pc_section (CORE_ADDR pc);
-extern struct obj_section *
-find_pc_section PARAMS((CORE_ADDR pc));
+extern int in_plt_section (CORE_ADDR, char *);
-extern int
-in_plt_section PARAMS ((CORE_ADDR, char *));
+/* Keep a registry of per-objfile data-pointers required by other GDB
+ modules. */
-/* Traverse all object files. ALL_OBJFILES_SAFE works even if you delete
- the objfile during the traversal. */
+/* Allocate an entry in the per-objfile registry. */
+extern const struct objfile_data *register_objfile_data (void);
+
+/* Allocate an entry in the per-objfile registry.
+ SAVE and FREE are called when clearing objfile data.
+ First all registered SAVE functions are called.
+ Then all registered FREE functions are called.
+ Either or both of SAVE, FREE may be NULL. */
+extern const struct objfile_data *register_objfile_data_with_cleanup
+ (void (*save) (struct objfile *, void *),
+ void (*free) (struct objfile *, void *));
+
+extern void clear_objfile_data (struct objfile *objfile);
+extern void set_objfile_data (struct objfile *objfile,
+ const struct objfile_data *data, void *value);
+extern void *objfile_data (struct objfile *objfile,
+ const struct objfile_data *data);
+
+extern struct bfd *gdb_bfd_ref (struct bfd *abfd);
+extern void gdb_bfd_unref (struct bfd *abfd);
+\f
+
+/* Traverse all object files in the current program space.
+ ALL_OBJFILES_SAFE works even if you delete the objfile during the
+ traversal. */
+
+/* Traverse all object files in program space SS. */
+
+#define ALL_PSPACE_OBJFILES(ss, obj) \
+ for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next) \
+
+#define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt) \
+ for ((obj) = ss->objfiles; \
+ (obj) != NULL? ((nxt)=(obj)->next,1) :0; \
+ (obj) = (nxt))
-#define ALL_OBJFILES(obj) \
- for ((obj) = object_files; (obj) != NULL; (obj) = (obj)->next)
+#define ALL_OBJFILES(obj) \
+ for ((obj) = current_program_space->objfiles; \
+ (obj) != NULL; \
+ (obj) = (obj)->next)
-#define ALL_OBJFILES_SAFE(obj,nxt) \
- for ((obj) = object_files; \
+#define ALL_OBJFILES_SAFE(obj,nxt) \
+ for ((obj) = current_program_space->objfiles; \
(obj) != NULL? ((nxt)=(obj)->next,1) :0; \
(obj) = (nxt))
/* Traverse all minimal symbols in one objfile. */
#define ALL_OBJFILE_MSYMBOLS(objfile, m) \
- for ((m) = (objfile) -> msymbols; SYMBOL_NAME(m) != NULL; (m)++)
+ for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++)
-/* Traverse all symtabs in all objfiles. */
+/* Traverse all symtabs in all objfiles in the current symbol
+ space. */
#define ALL_SYMTABS(objfile, s) \
ALL_OBJFILES (objfile) \
ALL_OBJFILE_SYMTABS (objfile, s)
-/* Traverse all psymtabs in all objfiles. */
+#define ALL_PSPACE_SYMTABS(ss, objfile, s) \
+ ALL_PSPACE_OBJFILES (ss, objfile) \
+ ALL_OBJFILE_SYMTABS (objfile, s)
+
+/* Traverse all symtabs in all objfiles in the current program space,
+ skipping included files (which share a blockvector with their
+ primary symtab). */
+
+#define ALL_PRIMARY_SYMTABS(objfile, s) \
+ ALL_OBJFILES (objfile) \
+ ALL_OBJFILE_SYMTABS (objfile, s) \
+ if ((s)->primary)
+
+#define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \
+ ALL_PSPACE_OBJFILES (ss, objfile) \
+ ALL_OBJFILE_SYMTABS (objfile, s) \
+ if ((s)->primary)
+
+/* Traverse all psymtabs in all objfiles in the current symbol
+ space. */
#define ALL_PSYMTABS(objfile, p) \
ALL_OBJFILES (objfile) \
ALL_OBJFILE_PSYMTABS (objfile, p)
-/* Traverse all minimal symbols in all objfiles. */
+#define ALL_PSPACE_PSYMTABS(ss, objfile, p) \
+ ALL_PSPACE_OBJFILES (ss, objfile) \
+ ALL_OBJFILE_PSYMTABS (objfile, p)
+
+/* Traverse all minimal symbols in all objfiles in the current symbol
+ space. */
#define ALL_MSYMBOLS(objfile, m) \
ALL_OBJFILES (objfile) \
- if ((objfile)->msymbols) \
- ALL_OBJFILE_MSYMBOLS (objfile, m)
+ ALL_OBJFILE_MSYMBOLS (objfile, m)
+
+#define ALL_OBJFILE_OSECTIONS(objfile, osect) \
+ for (osect = objfile->sections; osect < objfile->sections_end; osect++)
+
+#define ALL_OBJSECTIONS(objfile, osect) \
+ ALL_OBJFILES (objfile) \
+ ALL_OBJFILE_OSECTIONS (objfile, osect)
+
+#define SECT_OFF_DATA(objfile) \
+ ((objfile->sect_index_data == -1) \
+ ? (internal_error (__FILE__, __LINE__, _("sect_index_data not initialized")), -1) \
+ : objfile->sect_index_data)
+
+#define SECT_OFF_RODATA(objfile) \
+ ((objfile->sect_index_rodata == -1) \
+ ? (internal_error (__FILE__, __LINE__, _("sect_index_rodata not initialized")), -1) \
+ : objfile->sect_index_rodata)
+
+#define SECT_OFF_TEXT(objfile) \
+ ((objfile->sect_index_text == -1) \
+ ? (internal_error (__FILE__, __LINE__, _("sect_index_text not initialized")), -1) \
+ : objfile->sect_index_text)
+
+/* Sometimes the .bss section is missing from the objfile, so we don't
+ want to die here. Let the users of SECT_OFF_BSS deal with an
+ uninitialized section index. */
+#define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss
+
+/* Answer whether there is more than one object file loaded. */
+
+#define MULTI_OBJFILE_P() (object_files && object_files->next)
-#endif /* !defined (OBJFILES_H) */
+#endif /* !defined (OBJFILES_H) */
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