1999-04-16 03:35:26 +02:00
|
|
|
/* Read NLM (NetWare Loadable Module) format executable files for GDB.
|
2001-03-06 09:22:02 +01:00
|
|
|
Copyright 1993, 1994, 1995, 1996, 1998, 1999, 2000
|
|
|
|
Free Software Foundation, Inc.
|
1999-04-16 03:35:26 +02:00
|
|
|
Written by Fred Fish at Cygnus Support (fnf@cygnus.com).
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
This file is part of GDB.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
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.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
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.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
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. */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
#include "bfd.h"
|
|
|
|
#include "symtab.h"
|
|
|
|
#include "symfile.h"
|
|
|
|
#include "objfiles.h"
|
|
|
|
#include "buildsym.h"
|
|
|
|
#include "stabsread.h"
|
2003-02-19 David Carlton <carlton@math.stanford.edu>
* Makefile.in (SFILES): Add block.c.
(block_h): New.
(COMMON_OBS): Add block.o.
(block.o): New.
(x86-64-tdep.o): Add $(block_h).
(values.o, valops.o, tracepoint.o, symtab.o, symmisc.o, symfile.o)
(stack.o, printcmd.o, p-exp.tab.o, parse.o, objfiles.o)
(objc-exp.tab.o, objc-lang.o, nlmread.o, mips-tdep.o, mdebugread.o)
(m2-exp.tab.o, linespec.o, jv-lang.o, jv-exp.tab.o, infcmd.o)
(f-valprint.o, findvar.o, f-exp.tab.o, expprint.o, coffread.o)
(c-exp.tab.o, buildsym.o, breakpoint.o, blockframe.o, ax-gdb.o)
(alpha-tdep.o, ada-lang.o, ada-exp.tab.o, mi-cmd-stack.o): Ditto.
* value.h: Add opaque declaration for struct block.
* parser-defs.h, objc-lang.h, buildsym.h, breakpoint.h: Ditto.
* ada-lang.h: Ditto.
* x86-64-tdep.c: #include "block.h"
* values.c, valops.c, tracepoint.c, symtab.c, symmisc.c: Ditto.
* symfile.c, stack.c, printcmd.c, p-exp.y, parse.c: Ditto.
* objfiles.c, objc-exp.y, objc-lang.c, nlmread.c: Ditto.
* mips-tdep.c, mdebugread.c, m2-exp.y, linespec.c: Ditto.
* jv-lang.c, jv-exp.y, infcmd.c, f-valprint.c: Ditto.
* findvar.c, f-exp.y, expprint.c, coffread.c, c-exp.y: Ditto.
* buildsym.c, breakpoint.c, blockframe.c, ax-gdb.c: Ditto.
* alpha-tdep.c, ada-lang.c, ada-exp.y: Ditto.
* blockframe.c (blockvector_for_pc_sect): Move to "block.c".
(blockvector_for_pc, block_for_pc_sect, block_for_pc): Ditto.
* symtab.c (block_function): Ditto.
(contained_in): Ditto.
* frame.h: Move block_for_pc and block_for_pc_sect declarations to
block.h. Add opaque declaration for struct block.
* symtab.h: Move block_function and contained_in declarations to
block.h. Add opaque declarations for struct block, struct
blockvector.
(struct block): Move to block.h.
(struct blockvector): Ditto.
(BLOCK_START, BLOCK_END, BLOCK_FUNCTION, BLOCK_SUPERBLOCK)
(BLOCK_GCC_COMPILED, BLOCK_HASHTABLE, BLOCK_NSYMS, BLOCK_SYM)
(BLOCK_BUCKETS, BLOCK_BUCKET, BLOCK_HASHTABLE_SIZE)
(ALL_BLOCK_SYMBOLS, BLOCK_SHOULD_SORT, BLOCKVECTOR_NBLOCKS)
(BLOCKVECTOR_BLOCK, GLOBAL_BLOCK, STATIC_BLOCK, FIRST_LOCAL_BLOCK):
Ditto.
* block.c: New file.
* block.h: New file.
2003-02-19 David Carlton <carlton@math.stanford.edu>
* mi-cmd-stack.c: #include "block.h"
2003-02-20 01:01:07 +01:00
|
|
|
#include "block.h"
|
1999-04-16 03:35:26 +02:00
|
|
|
|
2000-05-28 03:12:42 +02:00
|
|
|
extern void _initialize_nlmread (void);
|
1999-05-25 20:09:09 +02:00
|
|
|
|
2000-05-28 03:12:42 +02:00
|
|
|
static void nlm_new_init (struct objfile *);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
2000-05-28 03:12:42 +02:00
|
|
|
static void nlm_symfile_init (struct objfile *);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
2000-05-28 03:12:42 +02:00
|
|
|
static void nlm_symfile_read (struct objfile *, int);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
2000-05-28 03:12:42 +02:00
|
|
|
static void nlm_symfile_finish (struct objfile *);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
2000-05-28 03:12:42 +02:00
|
|
|
static void nlm_symtab_read (bfd *, CORE_ADDR, struct objfile *);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
/* 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
|
2000-07-30 03:48:28 +02:00
|
|
|
nlm_new_init (struct objfile *ignore)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
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
|
2000-07-30 03:48:28 +02:00
|
|
|
nlm_symfile_init (struct objfile *ignore)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
LOCAL FUNCTION
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
nlm_symtab_read -- read the symbol table of an NLM file
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
SYNOPSIS
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
void nlm_symtab_read (bfd *abfd, CORE_ADDR addr,
|
|
|
|
struct objfile *objfile)
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
DESCRIPTION
|
1999-04-16 03:35:26 +02:00
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
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.
|
|
|
|
*/
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
static void
|
2000-07-30 03:48:28 +02:00
|
|
|
nlm_symtab_read (bfd *abfd, CORE_ADDR addr, struct objfile *objfile)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
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;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
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);
|
2000-12-15 02:01:51 +01:00
|
|
|
back_to = make_cleanup (xfree, symbol_table);
|
1999-07-07 22:19:36 +02:00
|
|
|
number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table);
|
1999-04-16 03:35:26 +02:00
|
|
|
if (number_of_symbols < 0)
|
|
|
|
error ("Can't read symbols from %s: %s", bfd_get_filename (abfd),
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
1999-07-07 22:19:36 +02:00
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
for (i = 0; i < number_of_symbols; i++)
|
|
|
|
{
|
|
|
|
sym = symbol_table[i];
|
1999-07-07 22:19:36 +02:00
|
|
|
if ( /*sym -> flags & BSF_GLOBAL */ 1)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
/* Bfd symbols are section relative. */
|
1999-07-07 22:19:36 +02:00
|
|
|
symaddr = sym->value + sym->section->vma;
|
1999-04-16 03:35:26 +02:00
|
|
|
/* Relocate all non-absolute symbols by base address. */
|
1999-07-07 22:19:36 +02:00
|
|
|
if (sym->section != &bfd_abs_section)
|
1999-04-16 03:35:26 +02:00
|
|
|
symaddr += addr;
|
|
|
|
|
|
|
|
/* For non-absolute symbols, use the type of the section
|
1999-07-07 22:19:36 +02:00
|
|
|
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)
|
1999-04-16 03:35:26 +02:00
|
|
|
ms_type = mst_text;
|
1999-07-07 22:19:36 +02:00
|
|
|
else if (sym->section->flags & SEC_DATA)
|
1999-04-16 03:35:26 +02:00
|
|
|
ms_type = mst_data;
|
|
|
|
else
|
|
|
|
ms_type = mst_unknown;
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
prim_record_minimal_symbol (sym->name, symaddr, ms_type,
|
1999-04-16 03:35:26 +02:00
|
|
|
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
|
2000-07-30 03:48:28 +02:00
|
|
|
nlm_symfile_read (struct objfile *objfile, int mainline)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
1999-07-07 22:19:36 +02:00
|
|
|
bfd *abfd = objfile->obfd;
|
1999-04-16 03:35:26 +02:00
|
|
|
struct cleanup *back_to;
|
|
|
|
CORE_ADDR offset;
|
|
|
|
struct symbol *mainsym;
|
|
|
|
|
|
|
|
init_minimal_symbol_collection ();
|
2000-05-16 06:07:39 +02:00
|
|
|
back_to = make_cleanup_discard_minimal_symbols ();
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
/* FIXME, should take a section_offsets param, not just an offset. */
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
offset = ANOFFSET (objfile->section_offsets, 0);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
/* Process the NLM export records, which become the bfd's canonical symbol
|
|
|
|
table. */
|
|
|
|
|
|
|
|
nlm_symtab_read (abfd, offset, objfile);
|
|
|
|
|
2003-02-20 19:31:14 +01:00
|
|
|
/* Install any minimal symbols that have been collected as the current
|
|
|
|
minimal symbols for this objfile. */
|
|
|
|
|
|
|
|
install_minimal_symbols (objfile);
|
|
|
|
do_cleanups (back_to);
|
|
|
|
|
1999-08-09 23:36:23 +02:00
|
|
|
stabsect_build_psymtabs (objfile, mainline, ".stab",
|
1999-04-16 03:35:26 +02:00
|
|
|
".stabstr", ".text");
|
|
|
|
|
2001-07-07 19:19:50 +02:00
|
|
|
mainsym = lookup_symbol (main_name (), NULL, VAR_NAMESPACE, NULL, NULL);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
if (mainsym
|
1999-07-07 22:19:36 +02:00
|
|
|
&& SYMBOL_CLASS (mainsym) == LOC_BLOCK)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
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. */
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* 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
|
2000-07-30 03:48:28 +02:00
|
|
|
nlm_symfile_finish (struct objfile *objfile)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
1999-07-07 22:19:36 +02:00
|
|
|
if (objfile->sym_private != NULL)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
2001-12-02 23:38:23 +01:00
|
|
|
xmfree (objfile->md, objfile->sym_private);
|
1999-04-16 03:35:26 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Register that we are able to handle NLM file format. */
|
|
|
|
|
|
|
|
static struct sym_fns nlm_sym_fns =
|
|
|
|
{
|
|
|
|
bfd_target_nlm_flavour,
|
1999-07-07 22:19:36 +02:00
|
|
|
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 */
|
1999-08-09 23:36:23 +02:00
|
|
|
default_symfile_offsets, /* sym_offsets: Translate ext. to int. relocation */
|
1999-07-07 22:19:36 +02:00
|
|
|
NULL /* next: pointer to next struct sym_fns */
|
1999-04-16 03:35:26 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
void
|
2000-07-30 03:48:28 +02:00
|
|
|
_initialize_nlmread (void)
|
1999-04-16 03:35:26 +02:00
|
|
|
{
|
|
|
|
add_symtab_fns (&nlm_sym_fns);
|
|
|
|
}
|