X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fsymfile.h;h=35913c08cd8cea2a089127ac178bdcc15a68d9ca;hb=4b14d3e4e0d9ba2ff2f9397312f884f8fc9a1135;hp=5921cbbaaeceb5831c104ebe55f469a811434fed;hpb=e74acce48c1b4efc29fd1e9e84639b77383aa002;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/symfile.h b/gdb/symfile.h index 5921cbbaae..35913c08cd 100644 --- a/gdb/symfile.h +++ b/gdb/symfile.h @@ -2,21 +2,22 @@ Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996 Free Software Foundation, Inc. -This file is part of GDB. + 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 -(at your option) any later version. + 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 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 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, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + 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. */ #if !defined (SYMFILE_H) #define SYMFILE_H @@ -31,89 +32,107 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ it allows us to throw away duplicate psymbols and set all pointers to the single saved instance. */ -struct psymbol_allocation_list { +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 40 +struct section_addr_info +{ + /* Sections whose names are file format dependant. */ + 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. */ -struct sym_fns { +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) PARAMS ((struct objfile *)); + void (*sym_new_init) PARAMS ((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) PARAMS ((struct objfile *)); + void (*sym_init) PARAMS ((struct objfile *)); - /* sym_read (objfile, addr, 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. */ + /* 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. */ - void (*sym_read) PARAMS ((struct objfile *, struct section_offsets *, int)); + void (*sym_read) PARAMS ((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 *)); + /* Called when we are finished with an objfile. Should do all cleanup + that is specific to the object file format for the particular 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. */ + void (*sym_finish) PARAMS ((struct objfile *)); - struct section_offsets *(*sym_offsets) PARAMS ((struct objfile *, CORE_ADDR)); + /* 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. */ - /* 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. */ + void (*sym_offsets) PARAMS ((struct objfile *, struct section_addr_info *)); - struct sym_fns *next; + /* 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; + + }; /* 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 PARAMS ((struct objfile * objfile, struct section_addr_info *)); extern void @@ -126,16 +145,24 @@ extend_psymbol_list PARAMS ((struct psymbol_allocation_list *, extern void add_psymbol_to_list PARAMS ((char *, int, namespace_enum, enum address_class, - struct psymbol_allocation_list *, long, CORE_ADDR, + 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 *)); + + extern void init_psymbol_list PARAMS ((struct objfile *, int)); extern void sort_pst_symbols PARAMS ((struct partial_symtab *)); extern struct symtab * -allocate_symtab PARAMS ((char *, struct objfile *)); + allocate_symtab PARAMS ((char *, struct objfile *)); extern int free_named_symtabs PARAMS ((char *)); @@ -150,16 +177,33 @@ extern void init_entry_point_info PARAMS ((struct objfile *)); extern void -syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int)); +syms_from_objfile PARAMS ((struct objfile *, struct section_addr_info *, int, int)); extern void new_symfile_objfile PARAMS ((struct objfile *, int, int)); +extern struct objfile * +symbol_file_add PARAMS ((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); + +/* 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 PARAMS ((struct objfile *, struct section_offsets *, - char *, CORE_ADDR, - struct partial_symbol **, - struct partial_symbol **)); + start_psymtab_common PARAMS ((struct objfile *, struct section_offsets *, + char *, CORE_ADDR, + struct partial_symbol **, + struct partial_symbol **)); /* Sorting your symbols for fast lookup or alphabetical printing. */ @@ -174,60 +218,113 @@ sort_symtab_syms PARAMS ((struct symtab *)); Returns the address of the copy. */ extern char * -obsavestring PARAMS ((char *, int, struct obstack *)); + obsavestring PARAMS ((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 *)); + obconcat PARAMS ((struct obstack * obstackp, const char *, const char *, + const char *)); /* Variables */ -/* whether to auto load solibs at startup time: 0/1. */ +/* whether to auto load solibs at startup time: 0/1. + + On all platforms, 0 means "don't auto load". + + 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. + + On other platforms, > 0 means, "always auto load". + */ extern int auto_solib_add; /* From symfile.c */ +extern CORE_ADDR + entry_point_address PARAMS ((void)); + extern struct partial_symtab * -allocate_psymtab PARAMS ((char *, struct objfile *)); + allocate_psymtab PARAMS ((char *, struct objfile *)); + +extern void +discard_psymtab PARAMS ((struct partial_symtab *)); extern void find_lowest_section PARAMS ((bfd *, asection *, PTR)); -/* Remote targets may wish to use this as their load function. */ -extern void generic_load PARAMS ((char *name, int from_tty)); +extern bfd *symfile_bfd_open PARAMS ((char *)); + +/* Utility functions for overlay sections: */ +extern int overlay_debugging; +extern int overlay_cache_invalid; + +/* return the "mapped" overlay section containing the PC */ +extern asection * + find_pc_mapped_section PARAMS ((CORE_ADDR)); + +/* return any overlay section containing the PC (even in its LMA region) */ +extern asection * + find_pc_overlay PARAMS ((CORE_ADDR)); + +/* return true if the section is an overlay */ +extern int +section_is_overlay PARAMS ((asection *)); + +/* return true if the overlay section is currently "mapped" */ +extern int +section_is_mapped PARAMS ((asection *)); + +/* return true if pc belongs to section's VMA */ +extern CORE_ADDR + pc_in_mapped_range PARAMS ((CORE_ADDR, asection *)); + +/* return true if pc belongs to section's LMA */ +extern CORE_ADDR + pc_in_unmapped_range PARAMS ((CORE_ADDR, asection *)); + +/* map an address from a section's LMA to its VMA */ +extern CORE_ADDR + overlay_mapped_address PARAMS ((CORE_ADDR, asection *)); + +/* map an address from a section's VMA to its LMA */ +extern CORE_ADDR + overlay_unmapped_address PARAMS ((CORE_ADDR, asection *)); + +/* convert an address in an overlay section (force into VMA range) */ +extern CORE_ADDR + symbol_overlayed_address PARAMS ((CORE_ADDR, asection *)); /* 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 PARAMS ((struct objfile *, int, file_ptr, unsigned int, + file_ptr, unsigned int)); + +/* From dwarf2read.c */ + +extern int dwarf2_has_info PARAMS ((bfd * abfd)); + +extern void dwarf2_build_psymtabs PARAMS ((struct objfile *, int)); /* 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; -}; + { + struct ecoff_debug_swap *a; + 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 *)); + struct ecoff_debug_info *)); extern void elfmdebug_build_psymtabs PARAMS ((struct objfile *, const struct ecoff_debug_swap *, - asection *, - struct section_offsets *)); - -/* From demangle.c */ - -extern void -set_demangling_style PARAMS ((char *)); + asection *)); -#endif /* !defined(SYMFILE_H) */ +#endif /* !defined(SYMFILE_H) */