/* Definitions for symbol file management in GDB.
- Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+ Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GDB.
#if !defined (OBJFILES_H)
#define OBJFILES_H
+#include "gdb_obstack.h" /* For obstack internals. */
+#include "symfile.h" /* For struct psymbol_allocation_list */
+
+struct bcache;
+struct htab;
+
/* 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
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
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:
+ To use this method, define your DEPRECATED_FRAME_CHAIN_VALID macro
+ like:
- #define FRAME_CHAIN_VALID(chain, thisframe) \
+ #define DEPRECATED_FRAME_CHAIN_VALID(chain, thisframe) \
(chain != 0 \
&& !(inside_main_func ((thisframe)->pc)) \
&& !(inside_entry_func ((thisframe)->pc)))
#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));
+extern void print_objfile_statistics (void);
+extern void print_symbol_bcache_statistics (void);
+
+/* 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.
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;
/* A byte cache where we can stash arbitrary "chunks" of bytes that
will not change. */
- struct bcache psymbol_cache; /* Byte cache for partial syms */
+ struct bcache *psymbol_cache; /* Byte cache for partial syms */
+ struct bcache *macro_cache; /* Byte cache for macros */
+
+ /* 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;
/* Vectors of all partial symbols read in from file. The actual data
is stored in the psymbol_obstack. */
struct minimal_symbol *msymbols;
int minimal_symbol_count;
+ /* This is a hash table used to index the minimal symbols by name. */
+
+ struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE];
+
+ /* This hash table is used to index the minimal symbols by their
+ demangled names. */
+
+ struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE];
+
/* 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,
the memory mapped malloc() package to manage storage for this objfile's
data. NULL if we are not. */
- PTR md;
+ void *md;
/* The file descriptor that was used to obtain the mmalloc descriptor
for this objfile. If we call mmalloc_detach with the malloc descriptor
typically a pointer to malloc'd memory. The symbol reader's finish
function is responsible for freeing the memory thusly allocated. */
- PTR sym_private;
+ void *sym_private;
/* 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. */
- PTR obj_private;
+ void *obj_private;
/* Set of relocation offsets to apply to each section.
Currently on the psymbol_obstack (which makes no sense, but I'm
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
ExportEntry *export_list;
int export_list_size;
+ /* 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;
};
/* Declarations for functions defined in objfiles.c */
-extern struct objfile *
-allocate_objfile PARAMS ((bfd *, int));
+extern struct objfile *allocate_objfile (bfd *, int);
-extern int
-build_objfile_section_table PARAMS ((struct objfile *));
+extern int build_objfile_section_table (struct objfile *);
-extern void objfile_to_front PARAMS ((struct objfile *));
+extern void terminate_minimal_symbol_table (struct objfile *objfile);
-extern void
-unlink_objfile PARAMS ((struct objfile *));
+extern void put_objfile_before (struct objfile *, struct objfile *);
-extern void
-free_objfile PARAMS ((struct objfile *));
+extern void objfile_to_front (struct objfile *);
-extern void
-free_all_objfiles PARAMS ((void));
+extern void unlink_objfile (struct objfile *);
-extern void
-objfile_relocate PARAMS ((struct objfile *, struct section_offsets *));
+extern void free_objfile (struct objfile *);
-extern int
-have_partial_symbols PARAMS ((void));
+extern struct cleanup *make_cleanup_free_objfile (struct objfile *);
-extern int
-have_full_symbols PARAMS ((void));
+extern void free_all_objfiles (void);
+
+extern void objfile_relocate (struct objfile *, struct section_offsets *);
+
+extern int have_partial_symbols (void);
+
+extern int have_full_symbols (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 PARAMS ((void));
+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 PARAMS ((CORE_ADDR pc));
+extern struct obj_section *find_pc_section (CORE_ADDR pc);
-extern struct obj_section *
- find_pc_sect_section PARAMS ((CORE_ADDR pc, asection * section));
+extern struct obj_section *find_pc_sect_section (CORE_ADDR pc,
+ asection * section);
-extern int
-in_plt_section PARAMS ((CORE_ADDR, char *));
+extern int in_plt_section (CORE_ADDR, char *);
-extern int
-is_in_import_list PARAMS ((char *, struct objfile *));
+extern int is_in_import_list (char *, struct objfile *);
/* Traverse all object files. ALL_OBJFILES_SAFE works even if you delete
the objfile during the traversal. */
/* 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; DEPRECATED_SYMBOL_NAME(m) != NULL; (m)++)
/* Traverse all symtabs in all objfiles. */
#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++)
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
+
#endif /* !defined (OBJFILES_H) */
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