X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fnlmread.c;h=71018ddae9d549d81de8710ba2e43db9bb541a29;hb=feb129926a8d12656f1ca4b7a8bb10268d3af4fb;hp=218f293eddaf4bcbc50a8452743705e8f075b0bf;hpb=ba47c66add7b9bd51af6ca2e6f45529bb38b9dd3;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/nlmread.c b/gdb/nlmread.c index 218f293edd..71018ddae9 100644 --- a/gdb/nlmread.c +++ b/gdb/nlmread.c @@ -1,25 +1,26 @@ /* Read NLM (NetWare Loadable Module) format executable files for GDB. - Copyright 1993, 1994 Free Software Foundation, Inc. + 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 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., 675 Mass Ave, Cambridge, MA 02139, 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. */ #include "defs.h" -#include +#include "gdb_string.h" #include "bfd.h" #include "symtab.h" #include "symfile.h" @@ -28,6 +29,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "buildsym.h" #include "stabsread.h" +extern void _initialize_nlmread PARAMS ((void)); + static void nlm_new_init PARAMS ((struct objfile *)); @@ -41,15 +44,7 @@ static void nlm_symfile_finish PARAMS ((struct objfile *)); static void -nlm_symtab_read PARAMS ((bfd *, CORE_ADDR, struct objfile *)); - -static struct section_offsets * -nlm_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR)); - -static void -record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type, - struct objfile *)); - +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 @@ -82,36 +77,24 @@ nlm_symfile_init (ignore) { } -static void -record_minimal_symbol (name, address, ms_type, objfile) - char *name; - CORE_ADDR address; - enum minimal_symbol_type ms_type; - struct objfile *objfile; -{ - name = obsavestring (name, strlen (name), &objfile -> symbol_obstack); - prim_record_minimal_symbol (name, address, ms_type, objfile); -} - - /* -LOCAL FUNCTION + LOCAL FUNCTION - nlm_symtab_read -- read the symbol table of an NLM file + nlm_symtab_read -- read the symbol table of an NLM file -SYNOPSIS + SYNOPSIS - void nlm_symtab_read (bfd *abfd, CORE_ADDR addr, - struct objfile *objfile) + void nlm_symtab_read (bfd *abfd, CORE_ADDR addr, + struct objfile *objfile) -DESCRIPTION + 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. -*/ + 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) @@ -119,52 +102,51 @@ nlm_symtab_read (abfd, addr, objfile) CORE_ADDR addr; struct objfile *objfile; { - unsigned int storage_needed; + long storage_needed; asymbol *sym; asymbol **symbol_table; - unsigned int number_of_symbols; - unsigned int i; + long number_of_symbols; + long i; struct cleanup *back_to; CORE_ADDR symaddr; enum minimal_symbol_type ms_type; - - storage_needed = get_symtab_upper_bound (abfd); + + 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); - + 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) + if ( /*sym -> flags & BSF_GLOBAL */ 1) { /* Bfd symbols are section relative. */ - symaddr = sym -> value + sym -> section -> vma; + symaddr = sym->value + sym->section->vma; /* Relocate all non-absolute symbols by base address. */ - if (sym -> section != &bfd_abs_section) - { - symaddr += addr; - } + 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; - } + 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; - } - record_minimal_symbol ((char *) sym -> name, symaddr, ms_type, - objfile); + ms_type = mst_unknown; + + prim_record_minimal_symbol (sym->name, symaddr, ms_type, + objfile); } } do_cleanups (back_to); @@ -205,12 +187,13 @@ nlm_symfile_read (objfile, section_offsets, mainline) struct section_offsets *section_offsets; int mainline; { - bfd *abfd = objfile -> obfd; + bfd *abfd = objfile->obfd; struct cleanup *back_to; CORE_ADDR offset; + struct symbol *mainsym; init_minimal_symbol_collection (); - back_to = make_cleanup (discard_minimal_symbols, 0); + back_to = make_cleanup ((make_cleanup_func) discard_minimal_symbols, 0); /* FIXME, should take a section_offsets param, not just an offset. */ @@ -221,16 +204,21 @@ nlm_symfile_read (objfile, section_offsets, mainline) nlm_symtab_read (abfd, offset, objfile); - /* FIXME: We could locate and read the optional native debugging format - here and add the symbols to the minimal symbol table. */ + stabsect_build_psymtabs (objfile, section_offsets, mainline, ".stab", + ".stabstr", ".text"); + + mainsym = lookup_symbol ("main", NULL, VAR_NAMESPACE, NULL, NULL); - if (!have_partial_symbols ()) + if (mainsym + && SYMBOL_CLASS (mainsym) == LOC_BLOCK) { - wrap_here (""); - printf_filtered ("(no debugging symbols found)..."); - wrap_here (""); + 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. */ @@ -249,51 +237,24 @@ static void nlm_symfile_finish (objfile) struct objfile *objfile; { - if (objfile -> sym_private != NULL) - { - mfree (objfile -> md, objfile -> sym_private); - } -} - -/* NLM specific parsing routine for section offsets. - FIXME: This may or may not be necessary. All the symbol readers seem - to have similar code. See if it can be generalized and moved elsewhere. */ - -static -struct section_offsets * -nlm_symfile_offsets (objfile, addr) - struct objfile *objfile; - CORE_ADDR addr; -{ - struct section_offsets *section_offsets; - int i; - - objfile->num_sections = SECT_OFF_MAX; - section_offsets = (struct section_offsets *) - obstack_alloc (&objfile -> psymbol_obstack, - sizeof (struct section_offsets) + - sizeof (section_offsets->offsets) * (SECT_OFF_MAX-1)); - - for (i = 0; i < SECT_OFF_MAX; i++) + if (objfile->sym_private != NULL) { - ANOFFSET (section_offsets, i) = addr; + mfree (objfile->md, objfile->sym_private); } - - return (section_offsets); } - /* 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 */ - nlm_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */ - NULL /* next: pointer to next struct sym_fns */ + 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