X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsymfile.h;h=267146375c65b774b71c8b579157522fe1fcabd8;hb=b3f71a301e0e75ae3fc610f061d76374c33a11c2;hp=875f1b5dc422eec3599e457c6cd9a334c565301b;hpb=96baa820df8126165bd3c4a33c561556b21203af;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/symfile.h b/gdb/symfile.h index 875f1b5dc4..267146375c 100644 --- a/gdb/symfile.h +++ b/gdb/symfile.h @@ -1,5 +1,6 @@ /* Definitions for reading symbol files into GDB. - Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996 + Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, + 2000, 2001, 2002, 2003 Free Software Foundation, Inc. This file is part of GDB. @@ -24,6 +25,10 @@ /* This file requires that you first include "bfd.h". */ +/* Opaque declarations. */ + +struct obstack; + /* 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, @@ -54,6 +59,25 @@ struct psymbol_allocation_list 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 +{ + /* Sections whose names are file format dependent. */ + struct other_sections + { + CORE_ADDR addr; + char *name; + int sectindex; + } other[MAX_SECTIONS]; +}; + /* Structure to keep track of symbol reading functions for various object file types. */ @@ -69,40 +93,37 @@ struct sym_fns 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. */ - void (*sym_init) PARAMS ((struct objfile *)); + void (*sym_init) (struct objfile *); - /* sym_read (objfile, addr, mainline) + /* 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. - SECTION_OFFSETS - are the offset between the file's specified section addresses and - their true addresses in memory. 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. */ - 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. */ - void (*sym_finish) PARAMS ((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. The result of this function is handed in to sym_read. */ + dependent way. */ - struct section_offsets *(*sym_offsets) PARAMS ((struct objfile *, CORE_ADDR)); + 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 @@ -115,171 +136,186 @@ struct sym_fns /* The default version of sym_fns.sym_offsets for readers that don't do anything special. */ -extern struct section_offsets * -default_symfile_offsets PARAMS ((struct objfile * objfile, CORE_ADDR addr)); +extern void default_symfile_offsets (struct objfile *objfile, + struct section_addr_info *); -extern void -extend_psymbol_list PARAMS ((struct psymbol_allocation_list *, - struct objfile *)); +extern void extend_psymbol_list (struct psymbol_allocation_list *, + struct objfile *); /* Add any kind of symbol to a psymbol_allocation_list. */ /* #include "demangle.h" */ 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 *)); +add_psymbol_to_list (char *, int, namespace_enum, enum address_class, + struct psymbol_allocation_list *, long, CORE_ADDR, + enum language, struct objfile *); 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 *)); +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 *); -extern void init_psymbol_list PARAMS ((struct objfile *, int)); +extern void init_psymbol_list (struct objfile *, int); -extern void -sort_pst_symbols PARAMS ((struct partial_symtab *)); +extern void sort_pst_symbols (struct partial_symtab *); -extern struct symtab * - allocate_symtab PARAMS ((char *, struct objfile *)); +extern struct symtab *allocate_symtab (char *, struct objfile *); -extern int -free_named_symtabs PARAMS ((char *)); +extern int free_named_symtabs (char *); -extern void -fill_in_vptr_fieldno PARAMS ((struct type *)); +extern void fill_in_vptr_fieldno (struct type *); -extern void -add_symtab_fns PARAMS ((struct sym_fns *)); +extern void add_symtab_fns (struct sym_fns *); -extern void -init_entry_point_info PARAMS ((struct objfile *)); +extern void init_entry_point_info (struct objfile *); -extern void -syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int)); +extern void syms_from_objfile (struct objfile *, + struct section_addr_info *, + struct section_offsets *, int, + int, int); -extern void -new_symfile_objfile PARAMS ((struct objfile *, int, int)); +extern void new_symfile_objfile (struct objfile *, int, int); + +extern struct objfile *symbol_file_add (char *, int, + struct section_addr_info *, int, int); + +/* Build (allocate and populate) a section_addr_info struct from + an existing section table. */ + +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 partial_symtab * - start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *, - char *, CORE_ADDR, - struct partial_symbol **, - struct partial_symbol **)); +/* 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, + struct partial_symbol **, + struct partial_symbol **); /* Sorting your symbols for fast lookup or alphabetical printing. */ -extern void -sort_block_syms PARAMS ((struct block *)); +extern void sort_block_syms (struct block *); -extern void -sort_symtab_syms PARAMS ((struct symtab *)); +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 PARAMS ((char *, int, struct obstack *)); +extern char *obsavestring (const char *, int, struct obstack *); /* 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 *)); +extern char *obconcat (struct obstack *obstackp, const char *, const char *, + const char *); /* Variables */ -/* whether to auto load solibs at startup time: 0/1. +/* 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 all platforms, 0 means "don't auto load". +extern int auto_solib_add; - 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. +/* 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. */ - On other platforms, > 0 means, "always auto load". - */ - -extern int auto_solib_add; +extern int auto_solib_limit; /* From symfile.c */ -extern CORE_ADDR - entry_point_address PARAMS ((void)); +extern CORE_ADDR entry_point_address (void); -extern struct partial_symtab * - allocate_psymtab PARAMS ((char *, struct objfile *)); +extern struct partial_symtab *allocate_psymtab (char *, struct objfile *); -extern void -discard_psymtab PARAMS ((struct partial_symtab *)); +extern void discard_psymtab (struct partial_symtab *); -extern void find_lowest_section PARAMS ((bfd *, asection *, PTR)); +extern void find_lowest_section (bfd *, asection *, void *); -extern bfd *symfile_bfd_open PARAMS ((char *)); +extern bfd *symfile_bfd_open (char *); -/* Remote targets may wish to use this as their load function. */ -extern void generic_load PARAMS ((char *name, int from_tty)); +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)); +extern asection *find_pc_mapped_section (CORE_ADDR); /* return any overlay section containing the PC (even in its LMA region) */ -extern asection * - find_pc_overlay PARAMS ((CORE_ADDR)); +extern asection *find_pc_overlay (CORE_ADDR); /* return true if the section is an overlay */ -extern int -section_is_overlay PARAMS ((asection *)); +extern int section_is_overlay (asection *); /* return true if the overlay section is currently "mapped" */ -extern int -section_is_mapped PARAMS ((asection *)); +extern int section_is_mapped (asection *); /* return true if pc belongs to section's VMA */ -extern CORE_ADDR - pc_in_mapped_range PARAMS ((CORE_ADDR, asection *)); +extern CORE_ADDR pc_in_mapped_range (CORE_ADDR, asection *); /* return true if pc belongs to section's LMA */ -extern CORE_ADDR - pc_in_unmapped_range PARAMS ((CORE_ADDR, asection *)); +extern CORE_ADDR pc_in_unmapped_range (CORE_ADDR, asection *); /* map an address from a section's LMA to its VMA */ -extern CORE_ADDR - overlay_mapped_address PARAMS ((CORE_ADDR, asection *)); +extern CORE_ADDR overlay_mapped_address (CORE_ADDR, asection *); /* map an address from a section's VMA to its LMA */ -extern CORE_ADDR - overlay_unmapped_address PARAMS ((CORE_ADDR, asection *)); +extern CORE_ADDR overlay_unmapped_address (CORE_ADDR, asection *); /* convert an address in an overlay section (force into VMA range) */ -extern CORE_ADDR - symbol_overlayed_address PARAMS ((CORE_ADDR, asection *)); +extern CORE_ADDR symbol_overlayed_address (CORE_ADDR, asection *); + +/* Load symbols from a file. */ +extern void symbol_file_add_main (char *args, int from_tty); + +/* Clear GDB symbol tables. */ +extern void symbol_file_clear (int from_tty); + +extern bfd_byte *symfile_relocate_debug_section (bfd *abfd, asection *sectp, + bfd_byte *buf); /* From dwarfread.c */ extern void -dwarf_build_psymtabs PARAMS ((struct objfile *, struct section_offsets *, int, - file_ptr, unsigned int, file_ptr, unsigned int)); +dwarf_build_psymtabs (struct objfile *, int, file_ptr, unsigned int, + file_ptr, unsigned int); /* From dwarf2read.c */ -extern int dwarf2_has_info PARAMS ((bfd * abfd)); +extern int dwarf2_has_info (bfd * abfd); + +extern void dwarf2_build_psymtabs (struct objfile *, int); +extern void dwarf2_build_frame_info (struct objfile *); -extern void dwarf2_build_psymtabs PARAMS ((struct objfile *, - struct section_offsets *, - int)); /* From mdebugread.c */ /* Hack to force structures to exist before use in parameter list. */ @@ -289,15 +325,12 @@ struct ecoff_debug_hack struct ecoff_debug_info *b; }; extern void -mdebug_build_psymtabs PARAMS ((struct objfile *, - const struct ecoff_debug_swap *, - struct ecoff_debug_info *, - struct section_offsets *)); +mdebug_build_psymtabs (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 section_offsets *)); +elfmdebug_build_psymtabs (struct objfile *, + const struct ecoff_debug_swap *, asection *); #endif /* !defined(SYMFILE_H) */