Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 300 insertions, 0 deletions

diff --git a/gdb/symfile.h b/gdb/symfile.h
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+/* Definitions for reading symbol files into GDB.
+   Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996
+   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
+(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.
+
+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
+
+/* 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. */
+
+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. */
+
+  struct partial_symbol **list;
+
+  /* Pointer to next available slot in which to store a pointer to a partial
+     symbol. */
+
+  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. */
+
+  int size;
+};
+
+/* 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).  */
+
+  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. */
+
+  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. */
+
+  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.  */
+
+  void (*sym_read) PARAMS ((struct objfile *, struct section_offsets *, 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 *));
+
+  /* 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.  */
+
+  struct section_offsets *(*sym_offsets) PARAMS ((struct objfile *, CORE_ADDR));
+
+  /* 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
+extend_psymbol_list PARAMS ((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 *));
+
+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 *));
+
+extern int
+free_named_symtabs PARAMS ((char *));
+
+extern void
+fill_in_vptr_fieldno PARAMS ((struct type *));
+
+extern void
+add_symtab_fns PARAMS ((struct sym_fns *));
+
+extern void
+init_entry_point_info PARAMS ((struct objfile *));
+
+extern void
+syms_from_objfile PARAMS ((struct objfile *, CORE_ADDR, int, int));
+
+extern void
+new_symfile_objfile PARAMS ((struct objfile *, int, int));
+
+extern struct partial_symtab *
+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.  */
+
+extern void
+sort_block_syms PARAMS ((struct block *));
+
+extern void
+sort_symtab_syms PARAMS ((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 *));
+
+/* 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 *));
+
+			/*   Variables   */
+
+/* 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 *));
+
+extern void
+discard_psymtab PARAMS ((struct partial_symtab *));
+
+extern void find_lowest_section PARAMS ((bfd *, asection *, PTR));
+
+extern bfd * symfile_bfd_open PARAMS ((char *));
+
+/* Remote targets may wish to use this as their load function.  */
+extern void generic_load PARAMS ((char *name, int from_tty));
+
+/* 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));
+
+/* From dwarf2read.c */
+
+extern int dwarf2_has_info PARAMS ((bfd *abfd));
+
+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.  */
+struct ecoff_debug_hack
+{
+  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 *));
+
+extern void
+elfmdebug_build_psymtabs PARAMS ((struct objfile *,
+				  const struct ecoff_debug_swap *,
+				  asection *,
+				  struct section_offsets *));
+
+#endif	/* !defined(SYMFILE_H) */