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author | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
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committer | Stan Shebs <shebs@codesourcery.com> | 1999-04-16 01:34:07 +0000 |
commit | 071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch) | |
tree | 5deda65b8d7b04d1f4cbc534c3206d328e1267ec /gdb/nlmread.c | |
parent | 1730ec6b1848f0f32154277f788fb29f88d8475b (diff) | |
download | fsf-binutils-gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.zip fsf-binutils-gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.gz fsf-binutils-gdb-071ea11e85eb9d529cc5eb3d35f6247466a21b99.tar.bz2 |
Initial creation of sourceware repository
Diffstat (limited to 'gdb/nlmread.c')
-rw-r--r-- | gdb/nlmread.c | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/gdb/nlmread.c b/gdb/nlmread.c deleted file mode 100644 index afdea43..0000000 --- a/gdb/nlmread.c +++ /dev/null @@ -1,261 +0,0 @@ -/* Read NLM (NetWare Loadable Module) format executable files for GDB. - Copyright 1993, 1994, 1998 Free Software Foundation, Inc. - Written by Fred Fish at Cygnus Support (fnf@cygnus.com). - -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. */ - -#include "defs.h" -#include "gdb_string.h" -#include "bfd.h" -#include "symtab.h" -#include "symfile.h" -#include "objfiles.h" -#include "gdb-stabs.h" -#include "buildsym.h" -#include "stabsread.h" - -static void -nlm_new_init PARAMS ((struct objfile *)); - -static void -nlm_symfile_init PARAMS ((struct objfile *)); - -static void -nlm_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); - -static void -nlm_symfile_finish PARAMS ((struct objfile *)); - -static void -nlm_symtab_read PARAMS ((bfd *, CORE_ADDR, struct objfile *)); - -/* Initialize anything that needs initializing when a completely new symbol - file is specified (not just adding some symbols from another file, e.g. a - shared library). - - We reinitialize buildsym, since gdb will be able to read stabs from an NLM - file at some point in the near future. */ - -static void -nlm_new_init (ignore) - struct objfile *ignore; -{ - stabsread_new_init (); - buildsym_new_init (); -} - - -/* NLM specific initialization routine for reading symbols. - - It is passed a pointer to a struct sym_fns which contains, among other - things, the BFD for the file whose symbols are being read, and a slot for - a pointer to "private data" which we can fill with goodies. - - For now at least, we have nothing in particular to do, so this function is - just a stub. */ - -static void -nlm_symfile_init (ignore) - struct objfile *ignore; -{ -} - -/* - -LOCAL FUNCTION - - nlm_symtab_read -- read the symbol table of an NLM file - -SYNOPSIS - - void nlm_symtab_read (bfd *abfd, CORE_ADDR addr, - struct objfile *objfile) - -DESCRIPTION - - Given an open bfd, a base address to relocate symbols to, and a - flag that specifies whether or not this bfd is for an executable - or not (may be shared library for example), add all the global - function and data symbols to the minimal symbol table. -*/ - -static void -nlm_symtab_read (abfd, addr, objfile) - bfd *abfd; - CORE_ADDR addr; - struct objfile *objfile; -{ - long storage_needed; - asymbol *sym; - asymbol **symbol_table; - long number_of_symbols; - long i; - struct cleanup *back_to; - CORE_ADDR symaddr; - enum minimal_symbol_type ms_type; - - storage_needed = bfd_get_symtab_upper_bound (abfd); - if (storage_needed < 0) - error ("Can't read symbols from %s: %s", bfd_get_filename (abfd), - bfd_errmsg (bfd_get_error ())); - if (storage_needed > 0) - { - symbol_table = (asymbol **) xmalloc (storage_needed); - back_to = make_cleanup (free, symbol_table); - number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table); - if (number_of_symbols < 0) - error ("Can't read symbols from %s: %s", bfd_get_filename (abfd), - bfd_errmsg (bfd_get_error ())); - - for (i = 0; i < number_of_symbols; i++) - { - sym = symbol_table[i]; - if (/*sym -> flags & BSF_GLOBAL*/ 1) - { - /* Bfd symbols are section relative. */ - symaddr = sym -> value + sym -> section -> vma; - /* Relocate all non-absolute symbols by base address. */ - if (sym -> section != &bfd_abs_section) - symaddr += addr; - - /* For non-absolute symbols, use the type of the section - they are relative to, to intuit text/data. BFD provides - no way of figuring this out for absolute symbols. */ - if (sym -> section -> flags & SEC_CODE) - ms_type = mst_text; - else if (sym -> section -> flags & SEC_DATA) - ms_type = mst_data; - else - ms_type = mst_unknown; - - prim_record_minimal_symbol (sym -> name, symaddr, ms_type, - objfile); - } - } - do_cleanups (back_to); - } -} - - -/* Scan and build partial symbols for a symbol file. - We have been initialized by a call to nlm_symfile_init, which - currently does nothing. - - SECTION_OFFSETS is a set of offsets to apply to relocate the symbols - in each section. We simplify it down to a single offset for all - symbols. FIXME. - - MAINLINE is true if we are reading the main symbol - table (as opposed to a shared lib or dynamically loaded file). - - This function only does the minimum work necessary for letting the - user "name" things symbolically; it does not read the entire symtab. - Instead, it reads the external and static symbols and puts them in partial - symbol tables. When more extensive information is requested of a - file, the corresponding partial symbol table is mutated into a full - fledged symbol table by going back and reading the symbols - for real. - - Note that NLM files have two sets of information that is potentially - useful for building gdb's minimal symbol table. The first is a list - of the publically exported symbols, and is currently used to build - bfd's canonical symbol table. The second is an optional native debugging - format which contains additional symbols (and possibly duplicates of - the publically exported symbols). The optional native debugging format - is not currently used. */ - -static void -nlm_symfile_read (objfile, section_offsets, mainline) - struct objfile *objfile; - struct section_offsets *section_offsets; - int mainline; -{ - bfd *abfd = objfile -> obfd; - struct cleanup *back_to; - CORE_ADDR offset; - struct symbol *mainsym; - - init_minimal_symbol_collection (); - back_to = make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0); - - /* FIXME, should take a section_offsets param, not just an offset. */ - - offset = ANOFFSET (section_offsets, 0); - - /* Process the NLM export records, which become the bfd's canonical symbol - table. */ - - nlm_symtab_read (abfd, offset, objfile); - - stabsect_build_psymtabs (objfile, section_offsets, mainline, ".stab", - ".stabstr", ".text"); - - mainsym = lookup_symbol ("main", NULL, VAR_NAMESPACE, NULL, NULL); - - if (mainsym - && SYMBOL_CLASS(mainsym) == LOC_BLOCK) - { - objfile->ei.main_func_lowpc = BLOCK_START (SYMBOL_BLOCK_VALUE (mainsym)); - objfile->ei.main_func_highpc = BLOCK_END (SYMBOL_BLOCK_VALUE (mainsym)); - } - - /* FIXME: We could locate and read the optional native debugging format - here and add the symbols to the minimal symbol table. */ - - /* Install any minimal symbols that have been collected as the current - minimal symbols for this objfile. */ - - install_minimal_symbols (objfile); - - do_cleanups (back_to); -} - - -/* Perform any local cleanups required when we are done with a particular - objfile. I.E, we are in the process of discarding all symbol information - for an objfile, freeing up all memory held for it, and unlinking the - objfile struct from the global list of known objfiles. */ - -static void -nlm_symfile_finish (objfile) - struct objfile *objfile; -{ - if (objfile -> sym_private != NULL) - { - mfree (objfile -> md, objfile -> sym_private); - } -} - -/* Register that we are able to handle NLM file format. */ - -static struct sym_fns nlm_sym_fns = -{ - bfd_target_nlm_flavour, - nlm_new_init, /* sym_new_init: init anything gbl to entire symtab */ - nlm_symfile_init, /* sym_init: read initial info, setup for sym_read() */ - nlm_symfile_read, /* sym_read: read a symbol file into symtab */ - nlm_symfile_finish, /* sym_finish: finished with file, cleanup */ - default_symfile_offsets, - /* sym_offsets: Translate ext. to int. relocation */ - NULL /* next: pointer to next struct sym_fns */ -}; - -void -_initialize_nlmread () -{ - add_symtab_fns (&nlm_sym_fns); -} |