1050 lines
28 KiB
C
1050 lines
28 KiB
C
/* Execute AIXcoff files, for GDB.
|
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Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
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Derived from exec.c. Modified by IBM Corporation.
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Donated by IBM Corporation and Cygnus Support.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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||
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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||
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* xcoff-exec - deal with executing XCOFF files. */
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#include "defs.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <fcntl.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/stat.h>
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#include <sys/ldr.h>
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#include "frame.h"
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#include "inferior.h"
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#include "target.h"
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#include "gdbcmd.h"
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#include "gdbcore.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "libbfd.h" /* BFD internals (sigh!) FIXME */
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#include "bfd.h"
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#include "xcoffsolib.h"
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/* Prototypes for local functions */
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static void
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file_command PARAMS ((char *, int));
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static void
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exec_close PARAMS ((int));
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static struct vmap *
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map_vmap PARAMS ((bfd *, bfd *));
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struct section_table *exec_sections, *exec_sections_end;
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/* Whether to open exec and core files read-only or read-write. */
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int write_files = 0;
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extern int info_verbose;
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bfd *exec_bfd; /* needed by core.c */
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extern char *getenv();
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extern void add_syms_addr_command ();
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extern void symbol_file_command ();
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static void exec_files_info();
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struct vmap *vmap; /* current vmap */
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extern struct target_ops exec_ops;
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/* exec_close - done with exec file, clean up all resources. */
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static void
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exec_close(quitting)
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{
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register struct vmap *vp, *nxt;
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struct objfile *obj;
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int need_symtab_cleanup = 0;
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for (nxt = vmap; vp = nxt; )
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{
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nxt = vp->nxt;
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/* if there is an objfile associated with this bfd,
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free_objfile() will do proper cleanup of objfile *and* bfd. */
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if (vp->objfile)
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{
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free_objfile (vp->objfile);
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need_symtab_cleanup = 1;
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}
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else
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bfd_close(vp->bfd);
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/* FIXME: This routine is #if 0'd in symfile.c. What should we
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be doing here? Should we just free everything in
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vp->objfile->symtabs? Should free_objfile do that? */
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free_named_symtabs(vp->name);
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free(vp);
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}
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vmap = 0;
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/* exec_bfd was already closed (the exec file has a vmap entry). */
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exec_bfd = NULL;
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if (exec_ops.to_sections) {
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free (exec_ops.to_sections);
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exec_ops.to_sections = NULL;
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exec_ops.to_sections_end = NULL;
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}
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if (need_symtab_cleanup)
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clear_symtab_users ();
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}
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/*
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* exec_file_command - handle the "exec" command, &c.
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*/
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void
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exec_file_command(filename, from_tty)
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char *filename;
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{
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target_preopen(from_tty);
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/* Remove any previous exec file. */
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unpush_target(&exec_ops);
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/* Now open and digest the file the user requested, if any. */
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if (filename) {
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char *scratch_pathname;
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int scratch_chan;
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filename = tilde_expand(filename);
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make_cleanup (free, filename);
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scratch_chan = openp(getenv("PATH"), 1, filename,
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write_files? O_RDWR: O_RDONLY, 0,
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&scratch_pathname);
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if (scratch_chan < 0)
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perror_with_name(filename);
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exec_bfd = bfd_fdopenr(scratch_pathname, NULL, scratch_chan);
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if (!exec_bfd)
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error("Could not open `%s' as an executable file: %s"
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, scratch_pathname, bfd_errmsg(bfd_error));
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/* make sure we have an object file */
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if (!bfd_check_format(exec_bfd, bfd_object))
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error("\"%s\": not in executable format: %s.",
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scratch_pathname, bfd_errmsg(bfd_error));
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/* setup initial vmap */
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map_vmap (exec_bfd, 0);
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if (!vmap)
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error("Can't find the file sections in `%s': %s",
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exec_bfd->filename, bfd_errmsg(bfd_error));
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if (build_section_table (exec_bfd, &exec_ops.to_sections,
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&exec_ops.to_sections_end))
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error ("Can't find the file sections in `%s': %s",
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exec_bfd->filename, bfd_errmsg (bfd_error));
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/* make sure core, if present, matches */
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validate_files();
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push_target(&exec_ops);
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||
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/* Tell display code(if any) about the changed file name. */
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if (exec_file_display_hook)
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(*exec_file_display_hook)(filename);
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}
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else {
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exec_close(0); /* just in case */
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if (from_tty)
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printf("No exec file now.\n");
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}
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}
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/* Set both the exec file and the symbol file, in one command. What a
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* novelty. Why did GDB go through four major releases before this
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* command was added?
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*/
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static void
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||
file_command(arg, from_tty)
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||
char *arg; {
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||
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||
exec_file_command(arg, from_tty);
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||
symbol_file_command(arg, from_tty);
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}
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/* Locate all mappable sections of a BFD file.
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table_pp_char is a char * to get it through bfd_map_over_sections;
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||
we cast it back to its proper type. */
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static void
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||
add_to_section_table (abfd, asect, table_pp_char)
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bfd *abfd;
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||
sec_ptr asect;
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||
char *table_pp_char;
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||
{
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||
struct section_table **table_pp = (struct section_table **)table_pp_char;
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||
flagword aflag;
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||
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aflag = bfd_get_section_flags (abfd, asect);
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/* FIXME, we need to handle BSS segment here...it alloc's but doesn't load */
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if (!(aflag & SEC_LOAD))
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return;
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if (0 == bfd_section_size (abfd, asect))
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return;
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(*table_pp)->bfd = abfd;
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(*table_pp)->sec_ptr = asect;
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(*table_pp)->addr = bfd_section_vma (abfd, asect);
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(*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect);
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(*table_pp)++;
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}
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int
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build_section_table (some_bfd, start, end)
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bfd *some_bfd;
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struct section_table **start, **end;
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{
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unsigned count;
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count = bfd_count_sections (some_bfd);
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if (count == 0)
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fatal ("aborting"); /* return 1? */
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if (*start)
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free (*start);
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*start = (struct section_table *) xmalloc (count * sizeof (**start));
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*end = *start;
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bfd_map_over_sections (some_bfd, add_to_section_table, (char *)end);
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if (*end > *start + count)
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fatal ("aborting");
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/* We could realloc the table, but it probably loses for most files. */
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return 0;
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}
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void
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sex_to_vmap(bfd *bf, sec_ptr sex, PTR arg3)
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{
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struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *)arg3;
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register struct vmap *vp, **vpp;
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register struct symtab *syms;
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bfd *arch = vmap_bfd->pbfd;
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vp = vmap_bfd->pvmap;
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if ((bfd_get_section_flags(bf, sex) & SEC_LOAD) == 0)
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return;
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if (STREQ(bfd_section_name(bf, sex), ".text")) {
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vp->tstart = 0;
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vp->tend = vp->tstart + bfd_section_size(bf, sex);
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/* When it comes to this adjustment value, in contrast to our previous
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belief shared objects should behave the same as the main load segment.
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This is the offset from the beginning of text section to the first
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real instruction. */
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vp->tadj = sex->filepos - bfd_section_vma(bf, sex);
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}
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else if (STREQ(bfd_section_name(bf, sex), ".data")) {
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vp->dstart = 0;
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vp->dend = vp->dstart + bfd_section_size(bf, sex);
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}
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else if (STREQ(bfd_section_name(bf, sex), ".bss")) /* FIXMEmgo */
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printf ("bss section in exec! Don't know what the heck to do!\n");
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}
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/* Make a vmap for the BFD "bf", which might be a member of the archive
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BFD "arch". Return the new vmap. */
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struct vmap *
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map_vmap (bfd *bf, bfd *arch)
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{
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struct vmap_and_bfd vmap_bfd;
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struct vmap *vp, **vpp;
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struct objfile *obj;
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vp = (void*) xmalloc (sizeof (*vp));
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bzero (vp, sizeof (*vp));
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vp->nxt = 0;
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vp->bfd = bf;
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vp->name = bfd_get_filename(arch ? arch : bf);
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vp->member = arch ? bfd_get_filename(bf) : "";
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vmap_bfd.pbfd = arch;
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vmap_bfd.pvmap = vp;
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bfd_map_over_sections (bf, sex_to_vmap, &vmap_bfd);
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/* find the end of the list, and append. */
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for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt)
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;
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*vpp = vp;
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return vp;
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}
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/* vmap_symtab - handle symbol translation on vmapping */
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static void
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vmap_symtab (vp)
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register struct vmap *vp;
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{
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||
register struct objfile *objfile;
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asection *textsec;
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asection *datasec;
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asection *bsssec;
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||
CORE_ADDR text_delta;
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CORE_ADDR data_delta;
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||
CORE_ADDR bss_delta;
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struct section_offsets *new_offsets;
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||
int i;
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||
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objfile = vp->objfile;
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||
if (objfile == NULL)
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||
{
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||
/* OK, it's not an objfile we opened ourselves.
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||
Currently, that can only happen with the exec file, so
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||
relocate the symbols for the symfile. */
|
||
if (symfile_objfile == NULL)
|
||
return;
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objfile = symfile_objfile;
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||
}
|
||
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||
new_offsets = alloca
|
||
(sizeof (struct section_offsets)
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||
+ sizeof (new_offsets->offsets) * objfile->num_sections);
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||
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for (i = 0; i < objfile->num_sections; ++i)
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ANOFFSET (new_offsets, i) = ANOFFSET (objfile->section_offsets, i);
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||
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textsec = bfd_get_section_by_name (vp->bfd, ".text");
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text_delta =
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vp->tstart - ANOFFSET (objfile->section_offsets, textsec->target_index);
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||
ANOFFSET (new_offsets, textsec->target_index) = vp->tstart;
|
||
|
||
datasec = bfd_get_section_by_name (vp->bfd, ".data");
|
||
data_delta =
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vp->dstart - ANOFFSET (objfile->section_offsets, datasec->target_index);
|
||
ANOFFSET (new_offsets, datasec->target_index) = vp->dstart;
|
||
|
||
bsssec = bfd_get_section_by_name (vp->bfd, ".bss");
|
||
bss_delta =
|
||
vp->dstart - ANOFFSET (objfile->section_offsets, bsssec->target_index);
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||
ANOFFSET (new_offsets, bsssec->target_index) = vp->dstart;
|
||
|
||
objfile_relocate (objfile, new_offsets);
|
||
|
||
{
|
||
struct obj_section *s;
|
||
for (s = objfile->sections; s < objfile->sections_end; ++s)
|
||
{
|
||
if (s->sec_ptr->target_index == textsec->target_index)
|
||
{
|
||
s->addr += text_delta;
|
||
s->endaddr += text_delta;
|
||
}
|
||
else if (s->sec_ptr->target_index == datasec->target_index)
|
||
{
|
||
s->addr += data_delta;
|
||
s->endaddr += data_delta;
|
||
}
|
||
else if (s->sec_ptr->target_index == bsssec->target_index)
|
||
{
|
||
s->addr += bss_delta;
|
||
s->endaddr += bss_delta;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (text_delta != 0)
|
||
/* breakpoints need to be relocated as well. */
|
||
fixup_breakpoints (0, TEXT_SEGMENT_BASE, text_delta);
|
||
}
|
||
|
||
/* Add symbols for an objfile. */
|
||
static int
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||
objfile_symbol_add (arg)
|
||
char *arg;
|
||
{
|
||
struct objfile *obj = (struct objfile *) arg;
|
||
syms_from_objfile (obj, 0, 0, 0);
|
||
new_symfile_objfile (obj, 0, 0);
|
||
return 1;
|
||
}
|
||
|
||
static struct vmap *add_vmap PARAMS ((struct ld_info *));
|
||
|
||
/* Add a new vmap entry based on ldinfo() information.
|
||
|
||
If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
|
||
core file), the caller should set it to -1, and we will open the file.
|
||
|
||
Return the vmap new entry. */
|
||
static struct vmap *
|
||
add_vmap(ldi)
|
||
register struct ld_info *ldi;
|
||
{
|
||
bfd *bfd, *last;
|
||
register char *mem, *objname;
|
||
struct objfile *obj;
|
||
struct vmap *vp;
|
||
|
||
/* This ldi structure was allocated using alloca() in
|
||
xcoff_relocate_symtab(). Now we need to have persistent object
|
||
and member names, so we should save them. */
|
||
|
||
mem = ldi->ldinfo_filename + strlen(ldi->ldinfo_filename) + 1;
|
||
mem = savestring (mem, strlen (mem));
|
||
objname = savestring (ldi->ldinfo_filename, strlen (ldi->ldinfo_filename));
|
||
|
||
if (ldi->ldinfo_fd < 0)
|
||
/* Note that this opens it once for every member; a possible
|
||
enhancement would be to only open it once for every object. */
|
||
bfd = bfd_openr (objname, NULL);
|
||
else
|
||
bfd = bfd_fdopenr(objname, NULL, ldi->ldinfo_fd);
|
||
if (!bfd)
|
||
error("Could not open `%s' as an executable file: %s",
|
||
objname, bfd_errmsg(bfd_error));
|
||
|
||
|
||
/* make sure we have an object file */
|
||
|
||
if (bfd_check_format(bfd, bfd_object))
|
||
vp = map_vmap (bfd, 0);
|
||
|
||
else if (bfd_check_format(bfd, bfd_archive)) {
|
||
last = 0;
|
||
/*
|
||
* FIXME??? am I tossing BFDs? bfd?
|
||
*/
|
||
while (last = bfd_openr_next_archived_file(bfd, last))
|
||
if (STREQ(mem, last->filename))
|
||
break;
|
||
|
||
if (!last) {
|
||
bfd_close(bfd);
|
||
/* FIXME -- should be error */
|
||
warning("\"%s\": member \"%s\" missing.", bfd->filename, mem);
|
||
return;
|
||
}
|
||
|
||
if (!bfd_check_format(last, bfd_object)) {
|
||
bfd_close(last); /* XXX??? */
|
||
goto obj_err;
|
||
}
|
||
|
||
vp = map_vmap (last, bfd);
|
||
}
|
||
else {
|
||
obj_err:
|
||
bfd_close(bfd);
|
||
error ("\"%s\": not in executable format: %s.",
|
||
objname, bfd_errmsg(bfd_error));
|
||
/*NOTREACHED*/
|
||
}
|
||
obj = allocate_objfile (vp->bfd, 0);
|
||
vp->objfile = obj;
|
||
|
||
#ifndef SOLIB_SYMBOLS_MANUAL
|
||
if (catch_errors (objfile_symbol_add, (char *)obj,
|
||
"Error while reading shared library symbols:\n",
|
||
RETURN_MASK_ALL))
|
||
{
|
||
/* Note this is only done if symbol reading was successful. */
|
||
vmap_symtab (vp);
|
||
vp->loaded = 1;
|
||
}
|
||
#endif
|
||
return vp;
|
||
}
|
||
|
||
|
||
/* As well as symbol tables, exec_sections need relocation. After
|
||
the inferior process' termination, there will be a relocated symbol
|
||
table exist with no corresponding inferior process. At that time, we
|
||
need to use `exec' bfd, rather than the inferior process's memory space
|
||
to look up symbols.
|
||
|
||
`exec_sections' need to be relocated only once, as long as the exec
|
||
file remains unchanged.
|
||
*/
|
||
vmap_exec ()
|
||
{
|
||
static bfd *execbfd;
|
||
int i;
|
||
|
||
if (execbfd == exec_bfd)
|
||
return;
|
||
|
||
execbfd = exec_bfd;
|
||
|
||
if (!vmap || !exec_ops.to_sections)
|
||
error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
|
||
|
||
for (i=0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++)
|
||
{
|
||
if (STREQ(".text", exec_ops.to_sections[i].sec_ptr->name))
|
||
{
|
||
exec_ops.to_sections[i].addr += vmap->tstart;
|
||
exec_ops.to_sections[i].endaddr += vmap->tstart;
|
||
}
|
||
else if (STREQ(".data", exec_ops.to_sections[i].sec_ptr->name))
|
||
{
|
||
exec_ops.to_sections[i].addr += vmap->dstart;
|
||
exec_ops.to_sections[i].endaddr += vmap->dstart;
|
||
}
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/* This was for the old, half-assed, core file support. */
|
||
int
|
||
text_adjustment (abfd)
|
||
bfd *abfd;
|
||
{
|
||
static bfd *execbfd;
|
||
static int adjustment;
|
||
sec_ptr sect;
|
||
|
||
if (exec_bfd == execbfd)
|
||
return adjustment;
|
||
|
||
sect = bfd_get_section_by_name (abfd, ".text");
|
||
if (sect)
|
||
adjustment = sect->filepos - sect->vma;
|
||
else
|
||
adjustment = 0x200; /* just a wild assumption */
|
||
|
||
return adjustment;
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* vmap_ldinfo - update VMAP info with ldinfo() information
|
||
*
|
||
* Input:
|
||
* ldi - ^ to ldinfo() results.
|
||
*/
|
||
vmap_ldinfo(ldi)
|
||
register struct ld_info *ldi;
|
||
{
|
||
struct stat ii, vi;
|
||
register struct vmap *vp;
|
||
register got_one, retried;
|
||
CORE_ADDR ostart;
|
||
|
||
/*
|
||
* for each *ldi, see if we have a corresponding *vp
|
||
* if so, update the mapping, and symbol table.
|
||
* if not, add an entry and symbol table.
|
||
*/
|
||
do {
|
||
char *name = ldi->ldinfo_filename;
|
||
char *memb = name + strlen(name) + 1;
|
||
|
||
retried = 0;
|
||
|
||
if (fstat(ldi->ldinfo_fd, &ii) < 0)
|
||
fatal("cannot fstat(%d) on %s"
|
||
, ldi->ldinfo_fd
|
||
, name);
|
||
retry:
|
||
for (got_one = 0, vp = vmap; vp; vp = vp->nxt) {
|
||
FILE *io;
|
||
|
||
/* First try to find a `vp', which is the same as in ldinfo.
|
||
If not the same, just continue and grep the next `vp'. If same,
|
||
relocate its tstart, tend, dstart, dend values. If no such `vp'
|
||
found, get out of this for loop, add this ldi entry as a new vmap
|
||
(add_vmap) and come back, fins its `vp' and so on... */
|
||
|
||
/* The filenames are not always sufficient to match on. */
|
||
|
||
if ((name[0] == '/' && !STREQ(name, vp->name))
|
||
|| (memb[0] && !STREQ(memb, vp->member)))
|
||
continue;
|
||
|
||
io = bfd_cache_lookup(vp->bfd); /* totally opaque! */
|
||
if (!io)
|
||
fatal("cannot find BFD's iostream for %s", vp->name);
|
||
|
||
/* see if we are referring to the same file */
|
||
|
||
if (fstat(fileno(io), &vi) < 0)
|
||
fatal("cannot fstat BFD for %s", vp->name);
|
||
|
||
if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
|
||
continue;
|
||
|
||
if (!retried)
|
||
close(ldi->ldinfo_fd);
|
||
|
||
++got_one;
|
||
|
||
/* found a corresponding VMAP. remap! */
|
||
ostart = vp->tstart;
|
||
|
||
/* We can assume pointer == CORE_ADDR, this code is native only. */
|
||
vp->tstart = (CORE_ADDR) ldi->ldinfo_textorg;
|
||
vp->tend = vp->tstart + ldi->ldinfo_textsize;
|
||
vp->dstart = (CORE_ADDR) ldi->ldinfo_dataorg;
|
||
vp->dend = vp->dstart + ldi->ldinfo_datasize;
|
||
|
||
if (vp->tadj) {
|
||
vp->tstart += vp->tadj;
|
||
vp->tend += vp->tadj;
|
||
}
|
||
|
||
/* relocate symbol table(s). */
|
||
vmap_symtab (vp);
|
||
|
||
/* there may be more, so we don't break out of the loop. */
|
||
}
|
||
|
||
/* if there was no matching *vp, we must perforce create the sucker(s) */
|
||
if (!got_one && !retried) {
|
||
add_vmap(ldi);
|
||
++retried;
|
||
goto retry;
|
||
}
|
||
} while (ldi->ldinfo_next
|
||
&& (ldi = (void *) (ldi->ldinfo_next + (char *) ldi)));
|
||
|
||
}
|
||
|
||
/*
|
||
* vmap_inferior - print VMAP info for inferior
|
||
*/
|
||
vmap_inferior() {
|
||
|
||
if (inferior_pid == 0)
|
||
return 0; /* normal processing */
|
||
|
||
exec_files_info();
|
||
return 1;
|
||
}
|
||
|
||
/* Read or write the exec file.
|
||
|
||
Args are address within exec file, address within gdb address-space,
|
||
length, and a flag indicating whether to read or write.
|
||
|
||
Result is a length:
|
||
|
||
0: We cannot handle this address and length.
|
||
> 0: We have handled N bytes starting at this address.
|
||
(If N == length, we did it all.) We might be able
|
||
to handle more bytes beyond this length, but no
|
||
promises.
|
||
< 0: We cannot handle this address, but if somebody
|
||
else handles (-N) bytes, we can start from there.
|
||
|
||
The same routine is used to handle both core and exec files;
|
||
we just tail-call it with more arguments to select between them. */
|
||
|
||
int
|
||
xfer_memory (memaddr, myaddr, len, write, target)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int write;
|
||
struct target_ops *target;
|
||
{
|
||
boolean res;
|
||
struct section_table *p;
|
||
CORE_ADDR nextsectaddr, memend;
|
||
boolean (*xfer_fn) PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
|
||
|
||
if (len <= 0)
|
||
fatal ("aborting");
|
||
|
||
memend = memaddr + len;
|
||
xfer_fn = write? bfd_set_section_contents: bfd_get_section_contents;
|
||
nextsectaddr = memend;
|
||
|
||
for (p = target->to_sections; p < target->to_sections_end; p++)
|
||
{
|
||
if (p->addr <= memaddr)
|
||
if (p->endaddr >= memend)
|
||
{
|
||
/* Entire transfer is within this section. */
|
||
res = xfer_fn (p->bfd, p->sec_ptr, myaddr, memaddr - p->addr, len);
|
||
return (res != false)? len: 0;
|
||
}
|
||
else if (p->endaddr <= memaddr)
|
||
{
|
||
/* This section ends before the transfer starts. */
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
/* This section overlaps the transfer. Just do half. */
|
||
len = p->endaddr - memaddr;
|
||
res = xfer_fn (p->bfd, p->sec_ptr, myaddr, memaddr - p->addr, len);
|
||
return (res != false)? len: 0;
|
||
}
|
||
else if (p->addr < nextsectaddr)
|
||
nextsectaddr = p->addr;
|
||
}
|
||
|
||
if (nextsectaddr >= memend)
|
||
return 0; /* We can't help */
|
||
else
|
||
return - (nextsectaddr - memaddr); /* Next boundary where we can help */
|
||
}
|
||
|
||
void
|
||
print_section_info (t, abfd)
|
||
struct target_ops *t;
|
||
bfd *abfd;
|
||
{
|
||
struct section_table *p;
|
||
|
||
printf_filtered ("\t`%s', ", bfd_get_filename(abfd));
|
||
wrap_here (" ");
|
||
printf_filtered ("file type %s.\n", bfd_get_target(abfd));
|
||
|
||
for (p = t->to_sections; p < t->to_sections_end; p++) {
|
||
printf_filtered ("\t%s", local_hex_string_custom (p->addr, "08"));
|
||
printf_filtered (" - %s", local_hex_string_custom (p->endaddr, "08"));
|
||
if (info_verbose)
|
||
printf_filtered (" @ %s",
|
||
local_hex_string_custom (p->sec_ptr->filepos, "08"));
|
||
printf_filtered (" is %s", bfd_section_name (p->bfd, p->sec_ptr));
|
||
if (p->bfd != abfd) {
|
||
printf_filtered (" in %s", bfd_get_filename (p->bfd));
|
||
}
|
||
printf_filtered ("\n");
|
||
}
|
||
}
|
||
|
||
|
||
static void
|
||
exec_files_info (t)
|
||
struct target_ops *t;
|
||
{
|
||
register struct vmap *vp = vmap;
|
||
|
||
print_section_info (t, exec_bfd);
|
||
|
||
if (!vp)
|
||
return;
|
||
|
||
printf("\tMapping info for file `%s'.\n", vp->name);
|
||
|
||
printf("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n",
|
||
"tstart", "tend", "dstart", "dend", "section", "file(member)");
|
||
|
||
for (; vp; vp = vp->nxt)
|
||
printf("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n",
|
||
vp->tstart,
|
||
vp->tend,
|
||
vp->dstart,
|
||
vp->dend,
|
||
vp->name,
|
||
*vp->member ? "(" : "",
|
||
vp->member,
|
||
*vp->member ? ")" : "");
|
||
}
|
||
|
||
#ifdef DAMON
|
||
/* Damon's implementation of set_section_command! It is based on the sex member
|
||
(which is a section pointer from vmap) of vmap.
|
||
We will not have multiple vmap entries (one for each section), rather transmit
|
||
text and data base offsets and fix them at the same time. Elimination of sex
|
||
entry in vmap make this function obsolute, use the one from exec.c.
|
||
Need further testing!! FIXMEmgo. */
|
||
|
||
static void
|
||
set_section_command(args, from_tty)
|
||
char *args;
|
||
{
|
||
register struct vmap *vp = vmap;
|
||
char *secname;
|
||
unsigned seclen;
|
||
unsigned long secaddr;
|
||
char secprint[100];
|
||
long offset;
|
||
|
||
if (args == 0)
|
||
error("Must specify section name and its virtual address");
|
||
|
||
/* Parse out section name */
|
||
for (secname = args; !isspace(*args); args++)
|
||
;
|
||
seclen = args - secname;
|
||
|
||
/* Parse out new virtual address */
|
||
secaddr = parse_and_eval_address(args);
|
||
|
||
for (vp = vmap; vp; vp = vp->nxt) {
|
||
if (!strncmp(secname
|
||
, bfd_section_name(vp->bfd, vp->sex), seclen)
|
||
&& bfd_section_name(vp->bfd, vp->sex)[seclen] == '\0') {
|
||
offset = secaddr - vp->tstart;
|
||
vp->tstart += offset;
|
||
vp->tend += offset;
|
||
exec_files_info();
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (seclen >= sizeof(secprint))
|
||
seclen = sizeof(secprint) - 1;
|
||
strncpy(secprint, secname, seclen);
|
||
secprint[seclen] = '\0';
|
||
error("Section %s not found", secprint);
|
||
}
|
||
#else
|
||
static void
|
||
set_section_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
struct section_table *p;
|
||
char *secname;
|
||
unsigned seclen;
|
||
unsigned long secaddr;
|
||
char secprint[100];
|
||
long offset;
|
||
|
||
if (args == 0)
|
||
error ("Must specify section name and its virtual address");
|
||
|
||
/* Parse out section name */
|
||
for (secname = args; !isspace(*args); args++) ;
|
||
seclen = args - secname;
|
||
|
||
/* Parse out new virtual address */
|
||
secaddr = parse_and_eval_address (args);
|
||
|
||
for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) {
|
||
if (!strncmp (secname, bfd_section_name (exec_bfd, p->sec_ptr), seclen)
|
||
&& bfd_section_name (exec_bfd, p->sec_ptr)[seclen] == '\0') {
|
||
offset = secaddr - p->addr;
|
||
p->addr += offset;
|
||
p->endaddr += offset;
|
||
if (from_tty)
|
||
exec_files_info(&exec_ops);
|
||
return;
|
||
}
|
||
}
|
||
if (seclen >= sizeof (secprint))
|
||
seclen = sizeof (secprint) - 1;
|
||
strncpy (secprint, secname, seclen);
|
||
secprint[seclen] = '\0';
|
||
error ("Section %s not found", secprint);
|
||
}
|
||
|
||
#endif /* !DAMON */
|
||
|
||
struct target_ops exec_ops = {
|
||
"exec", "Local exec file",
|
||
"Use an executable file as a target.\n\
|
||
Specify the filename of the executable file.",
|
||
exec_file_command, exec_close, /* open, close */
|
||
find_default_attach, 0, 0, 0, /* attach, detach, resume, wait, */
|
||
0, 0, /* fetch_registers, store_registers, */
|
||
0, /* prepare_to_store */
|
||
xfer_memory, exec_files_info,
|
||
0, 0, /* insert_breakpoint, remove_breakpoint, */
|
||
0, 0, 0, 0, 0, /* terminal stuff */
|
||
0, 0, /* kill, load */
|
||
0, /* lookup sym */
|
||
find_default_create_inferior,
|
||
0, /* mourn_inferior */
|
||
0, /* can_run */
|
||
0, /* notice_signals */
|
||
file_stratum, 0, /* next */
|
||
0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */
|
||
0, 0, /* section pointers */
|
||
OPS_MAGIC, /* Always the last thing */
|
||
};
|
||
|
||
/* Core file stuff. */
|
||
|
||
/* Relocate symtabs and read in shared library info, based on symbols
|
||
from the core file. */
|
||
void
|
||
xcoff_relocate_core ()
|
||
{
|
||
/* Offset of member MEMBER in a struct of type TYPE. */
|
||
#ifndef offsetof
|
||
#define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
|
||
#endif
|
||
|
||
/* Size of a struct ld_info except for the variable-length filename. */
|
||
#define LDINFO_SIZE (offsetof (struct ld_info, ldinfo_filename))
|
||
|
||
sec_ptr ldinfo_sec;
|
||
int offset = 0;
|
||
struct ld_info *ldip;
|
||
struct vmap *vp;
|
||
|
||
/* Allocated size of buffer. */
|
||
int buffer_size = LDINFO_SIZE;
|
||
char *buffer = xmalloc (buffer_size);
|
||
struct cleanup *old = make_cleanup (free_current_contents, &buffer);
|
||
|
||
/* FIXME, this restriction should not exist. For now, though I'll
|
||
avoid coredumps with error() pending a real fix. */
|
||
if (vmap == NULL)
|
||
error
|
||
("Can't debug a core file without an executable file (on the RS/6000)");
|
||
|
||
ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
|
||
if (ldinfo_sec == NULL)
|
||
{
|
||
bfd_err:
|
||
fprintf_filtered (stderr, "Couldn't get ldinfo from core file: %s\n",
|
||
bfd_errmsg (bfd_error));
|
||
do_cleanups (old);
|
||
return;
|
||
}
|
||
do
|
||
{
|
||
int i;
|
||
int names_found = 0;
|
||
|
||
/* Read in everything but the name. */
|
||
if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer,
|
||
offset, LDINFO_SIZE) == 0)
|
||
goto bfd_err;
|
||
|
||
/* Now the name. */
|
||
i = LDINFO_SIZE;
|
||
do
|
||
{
|
||
if (i == buffer_size)
|
||
{
|
||
buffer_size *= 2;
|
||
buffer = xrealloc (buffer, buffer_size);
|
||
}
|
||
if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i],
|
||
offset + i, 1) == 0)
|
||
goto bfd_err;
|
||
if (buffer[i++] == '\0')
|
||
++names_found;
|
||
} while (names_found < 2);
|
||
|
||
ldip = (struct ld_info *)buffer;
|
||
|
||
/* Can't use a file descriptor from the core file; need to open it. */
|
||
ldip->ldinfo_fd = -1;
|
||
|
||
/* The first ldinfo is for the exec file, allocated elsewhere. */
|
||
if (offset == 0)
|
||
vp = vmap;
|
||
else
|
||
vp = add_vmap (ldip);
|
||
|
||
offset += ldip->ldinfo_next;
|
||
|
||
/* We can assume pointer == CORE_ADDR, this code is native only. */
|
||
vp->tstart = (CORE_ADDR) ldip->ldinfo_textorg;
|
||
vp->tend = vp->tstart + ldip->ldinfo_textsize;
|
||
vp->dstart = (CORE_ADDR) ldip->ldinfo_dataorg;
|
||
vp->dend = vp->dstart + ldip->ldinfo_datasize;
|
||
|
||
if (vp->tadj != 0) {
|
||
vp->tstart += vp->tadj;
|
||
vp->tend += vp->tadj;
|
||
}
|
||
|
||
/* Unless this is the exec file,
|
||
add our sections to the section table for the core target. */
|
||
if (vp != vmap)
|
||
{
|
||
int count;
|
||
struct section_table *stp;
|
||
|
||
count = core_ops.to_sections_end - core_ops.to_sections;
|
||
count += 2;
|
||
core_ops.to_sections = (struct section_table *)
|
||
xrealloc (core_ops.to_sections,
|
||
sizeof (struct section_table) * count);
|
||
core_ops.to_sections_end = core_ops.to_sections + count;
|
||
stp = core_ops.to_sections_end - 2;
|
||
|
||
/* "Why do we add bfd_section_vma?", I hear you cry.
|
||
Well, the start of the section in the file is actually
|
||
that far into the section as the struct vmap understands it.
|
||
So for text sections, bfd_section_vma tends to be 0x200,
|
||
and if vp->tstart is 0xd0002000, then the first byte of
|
||
the text section on disk corresponds to address 0xd0002200. */
|
||
stp->bfd = vp->bfd;
|
||
stp->sec_ptr = bfd_get_section_by_name (stp->bfd, ".text");
|
||
stp->addr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->tstart;
|
||
stp->endaddr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->tend;
|
||
stp++;
|
||
|
||
stp->bfd = vp->bfd;
|
||
stp->sec_ptr = bfd_get_section_by_name (stp->bfd, ".data");
|
||
stp->addr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->dstart;
|
||
stp->endaddr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->dend;
|
||
}
|
||
|
||
vmap_symtab (vp);
|
||
|
||
add_text_to_loadinfo ((CORE_ADDR)ldip->ldinfo_textorg,
|
||
(CORE_ADDR)ldip->ldinfo_dataorg);
|
||
} while (ldip->ldinfo_next != 0);
|
||
vmap_exec ();
|
||
do_cleanups (old);
|
||
}
|
||
|
||
void
|
||
_initialize_exec()
|
||
{
|
||
|
||
add_com("file", class_files, file_command,
|
||
"Use FILE as program to be debugged.\n\
|
||
It is read for its symbols, for getting the contents of pure memory,\n\
|
||
and it is the program executed when you use the `run' command.\n\
|
||
If FILE cannot be found as specified, your execution directory path\n\
|
||
($PATH) is searched for a command of that name.\n\
|
||
No arg means to have no executable file and no symbols.");
|
||
|
||
add_com("exec-file", class_files, exec_file_command,
|
||
"Use FILE as program for getting contents of pure memory.\n\
|
||
If FILE cannot be found as specified, your execution directory path\n\
|
||
is searched for a command of that name.\n\
|
||
No arg means have no executable file.");
|
||
|
||
add_com("section", class_files, set_section_command,
|
||
"Change the base address of section SECTION of the exec file to ADDR.\n\
|
||
This can be used if the exec file does not contain section addresses,\n\
|
||
(such as in the a.out format), or when the addresses specified in the\n\
|
||
file itself are wrong. Each section must be changed separately. The\n\
|
||
``info files'' command lists all the sections and their addresses.");
|
||
|
||
add_target(&exec_ops);
|
||
}
|