/* Work with executable files, for GDB.
- Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002
+
+ Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008, 2009
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "frame.h"
#include "objfiles.h"
#include "completer.h"
#include "value.h"
-
-#ifdef USG
-#include <sys/types.h>
-#endif
+#include "exec.h"
+#include "observer.h"
+#include "arch-utils.h"
#include <fcntl.h>
+#include "readline/readline.h"
#include "gdb_string.h"
#include "gdbcore.h"
#include <ctype.h>
#include "gdb_stat.h"
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
#include "xcoffsolib.h"
struct vmap *map_vmap (bfd *, bfd *);
-void (*file_changed_hook) (char *);
+void (*deprecated_file_changed_hook) (char *);
/* Prototypes for local functions */
-static void add_to_section_table (bfd *, sec_ptr, PTR);
-
static void exec_close (int);
static void file_command (char *, int);
static void exec_files_info (struct target_ops *);
-static void bfdsec_to_vmap (bfd *, sec_ptr, PTR);
-
-static int ignore (CORE_ADDR, char *);
-
static void init_exec_ops (void);
void _initialize_exec (void);
/* The Binary File Descriptor handle for the executable file. */
bfd *exec_bfd = NULL;
+long exec_bfd_mtime = 0;
/* Whether to open exec and core files read-only or read-write. */
int write_files = 0;
+static void
+show_write_files (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ fprintf_filtered (file, _("Writing into executable and core files is %s.\n"),
+ value);
+}
-/* Text start and end addresses (KLUDGE) if needed */
-
-#ifndef NEED_TEXT_START_END
-#define NEED_TEXT_START_END (0)
-#endif
-CORE_ADDR text_start = 0;
-CORE_ADDR text_end = 0;
struct vmap *vmap;
-void
+static void
exec_open (char *args, int from_tty)
{
target_preopen (from_tty);
exec_file_attach (args, from_tty);
}
-/* ARGSUSED */
static void
exec_close (int quitting)
{
else if (vp->bfd != exec_bfd)
/* FIXME-leak: We should be freeing vp->name too, I think. */
if (!bfd_close (vp->bfd))
- warning ("cannot close \"%s\": %s",
+ warning (_("cannot close \"%s\": %s"),
vp->name, bfd_errmsg (bfd_get_error ()));
/* FIXME: This routine is #if 0'd in symfile.c. What should we
char *name = bfd_get_filename (exec_bfd);
if (!bfd_close (exec_bfd))
- warning ("cannot close \"%s\": %s",
+ warning (_("cannot close \"%s\": %s"),
name, bfd_errmsg (bfd_get_error ()));
xfree (name);
exec_bfd = NULL;
+ exec_bfd_mtime = 0;
}
if (exec_ops.to_sections)
unpush_target (&exec_ops);
if (from_tty)
- printf_unfiltered ("No executable file now.\n");
+ printf_unfiltered (_("No executable file now.\n"));
}
/* Process the first arg in ARGS as the new exec file.
if (!filename)
{
if (from_tty)
- printf_unfiltered ("No executable file now.\n");
+ printf_unfiltered (_("No executable file now.\n"));
+
+ set_gdbarch_from_file (NULL);
}
else
{
+ struct cleanup *cleanups;
char *scratch_pathname;
int scratch_chan;
- scratch_chan = openp (getenv ("PATH"), 1, filename,
+ scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename,
write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0,
&scratch_pathname);
#if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__)
{
char *exename = alloca (strlen (filename) + 5);
strcat (strcpy (exename, filename), ".exe");
- scratch_chan = openp (getenv ("PATH"), 1, exename, write_files ?
- O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, &scratch_pathname);
+ scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename,
+ write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0,
+ &scratch_pathname);
}
#endif
if (scratch_chan < 0)
perror_with_name (filename);
- exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan);
+ exec_bfd = bfd_fopen (scratch_pathname, gnutarget,
+ write_files ? FOPEN_RUB : FOPEN_RB,
+ scratch_chan);
if (!exec_bfd)
- error ("\"%s\": could not open as an executable file: %s",
- scratch_pathname, bfd_errmsg (bfd_get_error ()));
+ {
+ close (scratch_chan);
+ error (_("\"%s\": could not open as an executable file: %s"),
+ scratch_pathname, bfd_errmsg (bfd_get_error ()));
+ }
/* At this point, scratch_pathname and exec_bfd->name both point to the
same malloc'd string. However exec_close() will attempt to free it
via the exec_bfd->name pointer, so we need to make another copy and
leave exec_bfd as the new owner of the original copy. */
scratch_pathname = xstrdup (scratch_pathname);
- make_cleanup (xfree, scratch_pathname);
+ cleanups = make_cleanup (xfree, scratch_pathname);
if (!bfd_check_format (exec_bfd, bfd_object))
{
/* Make sure to close exec_bfd, or else "run" might try to use
it. */
exec_close (0);
- error ("\"%s\": not in executable format: %s",
+ error (_("\"%s\": not in executable format: %s"),
scratch_pathname, bfd_errmsg (bfd_get_error ()));
}
/* FIXME - This should only be run for RS6000, but the ifdef is a poor
way to accomplish. */
-#ifdef IBM6000_TARGET
+#ifdef DEPRECATED_IBM6000_TARGET
/* Setup initial vmap. */
map_vmap (exec_bfd, 0);
/* Make sure to close exec_bfd, or else "run" might try to use
it. */
exec_close (0);
- error ("\"%s\": can't find the file sections: %s",
+ error (_("\"%s\": can't find the file sections: %s"),
scratch_pathname, bfd_errmsg (bfd_get_error ()));
}
-#endif /* IBM6000_TARGET */
+#endif /* DEPRECATED_IBM6000_TARGET */
if (build_section_table (exec_bfd, &exec_ops.to_sections,
&exec_ops.to_sections_end))
/* Make sure to close exec_bfd, or else "run" might try to use
it. */
exec_close (0);
- error ("\"%s\": can't find the file sections: %s",
+ error (_("\"%s\": can't find the file sections: %s"),
scratch_pathname, bfd_errmsg (bfd_get_error ()));
}
- /* text_end is sometimes used for where to put call dummies. A
- few ports use these for other purposes too. */
- if (NEED_TEXT_START_END)
- {
- struct section_table *p;
-
- /* Set text_start to the lowest address of the start of any
- readonly code section and set text_end to the highest
- address of the end of any readonly code section. */
- /* FIXME: The comment above does not match the code. The
- code checks for sections with are either code *or*
- readonly. */
- text_start = ~(CORE_ADDR) 0;
- text_end = (CORE_ADDR) 0;
- for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++)
- if (bfd_get_section_flags (p->bfd, p->the_bfd_section)
- & (SEC_CODE | SEC_READONLY))
- {
- if (text_start > p->addr)
- text_start = p->addr;
- if (text_end < p->endaddr)
- text_end = p->endaddr;
- }
- }
+ exec_bfd_mtime = bfd_get_mtime (exec_bfd);
validate_files ();
push_target (&exec_ops);
/* Tell display code (if any) about the changed file name. */
- if (exec_file_display_hook)
- (*exec_file_display_hook) (filename);
+ if (deprecated_exec_file_display_hook)
+ (*deprecated_exec_file_display_hook) (filename);
+
+ do_cleanups (cleanups);
}
+ bfd_cache_close_all ();
+ observer_notify_executable_changed ();
}
/* Process the first arg in ARGS as the new exec file.
{
char **argv;
char *filename;
-
- target_preopen (from_tty);
+
+ if (from_tty && target_has_execution
+ && !query (_("A program is being debugged already.\n"
+ "Are you sure you want to change the file? ")))
+ error (_("File not changed."));
if (args)
{
+ struct cleanup *cleanups;
+
/* Scan through the args and pick up the first non option arg
as the filename. */
- argv = buildargv (args);
- if (argv == NULL)
- nomem (0);
-
- make_cleanup_freeargv (argv);
+ argv = gdb_buildargv (args);
+ cleanups = make_cleanup_freeargv (argv);
for (; (*argv != NULL) && (**argv == '-'); argv++)
{;
}
if (*argv == NULL)
- error ("No executable file name was specified");
+ error (_("No executable file name was specified"));
filename = tilde_expand (*argv);
make_cleanup (xfree, filename);
exec_file_attach (filename, from_tty);
+
+ do_cleanups (cleanups);
}
else
exec_file_attach (NULL, from_tty);
the exec file, but that's rough. */
exec_file_command (arg, from_tty);
symbol_file_command (arg, from_tty);
- if (file_changed_hook)
- file_changed_hook (arg);
+ if (deprecated_file_changed_hook)
+ deprecated_file_changed_hook (arg);
}
\f
we cast it back to its proper type. */
static void
-add_to_section_table (bfd *abfd, sec_ptr asect, PTR table_pp_char)
+add_to_section_table (bfd *abfd, struct bfd_section *asect,
+ void *table_pp_char)
{
struct section_table **table_pp = (struct section_table **) table_pp_char;
flagword aflag;
+ /* Check the section flags, but do not discard zero-length sections, since
+ some symbols may still be attached to this section. For instance, we
+ encountered on sparc-solaris 2.10 a shared library with an empty .bss
+ section to which a symbol named "_end" was attached. The address
+ of this symbol still needs to be relocated. */
aflag = bfd_get_section_flags (abfd, asect);
if (!(aflag & SEC_ALLOC))
return;
- if (0 == bfd_section_size (abfd, asect))
- return;
+
(*table_pp)->bfd = abfd;
(*table_pp)->the_bfd_section = asect;
(*table_pp)->addr = bfd_section_vma (abfd, asect);
Returns 0 if OK, 1 on error. */
int
-build_section_table (bfd *some_bfd, struct section_table **start,
+build_section_table (struct bfd *some_bfd, struct section_table **start,
struct section_table **end)
{
unsigned count;
*end = *start;
bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end);
if (*end > *start + count)
- internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
/* We could realloc the table, but it probably loses for most files. */
return 0;
}
\f
static void
-bfdsec_to_vmap (bfd *abfd, sec_ptr sect, PTR arg3)
+bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3)
{
struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3;
struct vmap *vp;
if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0)
return;
- if (STREQ (bfd_section_name (abfd, sect), ".text"))
+ if (strcmp (bfd_section_name (abfd, sect), ".text") == 0)
{
vp->tstart = bfd_section_vma (abfd, sect);
vp->tend = vp->tstart + bfd_section_size (abfd, sect);
vp->tvma = bfd_section_vma (abfd, sect);
vp->toffs = sect->filepos;
}
- else if (STREQ (bfd_section_name (abfd, sect), ".data"))
+ else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0)
{
vp->dstart = bfd_section_vma (abfd, sect);
vp->dend = vp->dstart + bfd_section_size (abfd, sect);
we just tail-call it with more arguments to select between them. */
int
-xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
- struct mem_attrib *attrib,
- struct target_ops *target)
+xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write,
+ struct mem_attrib *attrib, struct target_ops *target)
{
- boolean res;
+ int res;
struct section_table *p;
CORE_ADDR nextsectaddr, memend;
- boolean (*xfer_fn) (bfd *, sec_ptr, PTR, file_ptr, bfd_size_type);
- asection *section = NULL;
+ struct obj_section *section = NULL;
if (len <= 0)
- internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ internal_error (__FILE__, __LINE__, _("failed internal consistency check"));
if (overlay_debugging)
{
}
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 (overlay_debugging && section && p->the_bfd_section &&
- strcmp (section->name, p->the_bfd_section->name) != 0)
+ if (overlay_debugging && section
+ && strcmp (section->the_bfd_section->name,
+ p->the_bfd_section->name) != 0)
continue; /* not the section we need */
if (memaddr >= p->addr)
{
if (memend <= p->endaddr)
{
/* Entire transfer is within this section. */
- res = xfer_fn (p->bfd, p->the_bfd_section, myaddr,
- memaddr - p->addr, len);
+ if (write)
+ res = bfd_set_section_contents (p->bfd, p->the_bfd_section,
+ myaddr, memaddr - p->addr,
+ len);
+ else
+ res = bfd_get_section_contents (p->bfd, p->the_bfd_section,
+ myaddr, memaddr - p->addr,
+ len);
return (res != 0) ? len : 0;
}
else if (memaddr >= p->endaddr)
{
/* This section overlaps the transfer. Just do half. */
len = p->endaddr - memaddr;
- res = xfer_fn (p->bfd, p->the_bfd_section, myaddr,
- memaddr - p->addr, len);
+ if (write)
+ res = bfd_set_section_contents (p->bfd, p->the_bfd_section,
+ myaddr, memaddr - p->addr,
+ len);
+ else
+ res = bfd_get_section_contents (p->bfd, p->the_bfd_section,
+ myaddr, memaddr - p->addr,
+ len);
return (res != 0) ? len : 0;
}
}
print_section_info (struct target_ops *t, bfd *abfd)
{
struct section_table *p;
+ /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */
+ int wid = gdbarch_addr_bit (gdbarch_from_bfd (abfd)) <= 32 ? 8 : 16;
printf_filtered ("\t`%s', ", bfd_get_filename (abfd));
wrap_here (" ");
- printf_filtered ("file type %s.\n", bfd_get_target (abfd));
+ printf_filtered (_("file type %s.\n"), bfd_get_target (abfd));
if (abfd == exec_bfd)
- {
- printf_filtered ("\tEntry point: ");
- print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout);
- printf_filtered ("\n");
- }
+ printf_filtered (_("\tEntry point: %s\n"),
+ paddress (bfd_get_start_address (abfd)));
for (p = t->to_sections; p < t->to_sections_end; p++)
{
- /* FIXME-32x64 need a print_address_numeric with field width */
- printf_filtered ("\t%s", local_hex_string_custom ((unsigned long) p->addr, "08l"));
- printf_filtered (" - %s", local_hex_string_custom ((unsigned long) p->endaddr, "08l"));
+ printf_filtered ("\t%s", hex_string_custom (p->addr, wid));
+ printf_filtered (" - %s", hex_string_custom (p->endaddr, wid));
+
+ /* FIXME: A format of "08l" is not wide enough for file offsets
+ larger than 4GB. OTOH, making it "016l" isn't desirable either
+ since most output will then be much wider than necessary. It
+ may make sense to test the size of the file and choose the
+ format string accordingly. */
+ /* FIXME: i18n: Need to rewrite this sentence. */
if (info_verbose)
printf_filtered (" @ %s",
- local_hex_string_custom ((unsigned long) p->the_bfd_section->filepos, "08l"));
+ hex_string_custom (p->the_bfd_section->filepos, 8));
printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section));
if (p->bfd != abfd)
- {
- printf_filtered (" in %s", bfd_get_filename (p->bfd));
- }
+ printf_filtered (" in %s", bfd_get_filename (p->bfd));
printf_filtered ("\n");
}
}
{
struct vmap *vp;
- printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name);
+ printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name);
printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n",
strlen_paddr (), "tstart",
strlen_paddr (), "tend",
}
}
-/* msnyder 5/21/99:
- exec_set_section_offsets sets the offsets of all the sections
- in the exec objfile. */
-
-void
-exec_set_section_offsets (bfd_signed_vma text_off, bfd_signed_vma data_off,
- bfd_signed_vma bss_off)
-{
- struct section_table *sect;
-
- for (sect = exec_ops.to_sections;
- sect < exec_ops.to_sections_end;
- sect++)
- {
- flagword flags;
-
- flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section);
-
- if (flags & SEC_CODE)
- {
- sect->addr += text_off;
- sect->endaddr += text_off;
- }
- else if (flags & (SEC_DATA | SEC_LOAD))
- {
- sect->addr += data_off;
- sect->endaddr += data_off;
- }
- else if (flags & SEC_ALLOC)
- {
- sect->addr += bss_off;
- sect->endaddr += bss_off;
- }
- }
-}
-
static void
set_section_command (char *args, int from_tty)
{
long offset;
if (args == 0)
- error ("Must specify section name and its virtual address");
+ error (_("Must specify section name and its virtual address"));
/* Parse out section name */
for (secname = args; !isspace (*args); args++);
seclen = sizeof (secprint) - 1;
strncpy (secprint, secname, seclen);
secprint[seclen] = '\0';
- error ("Section %s not found", secprint);
+ error (_("Section %s not found"), secprint);
+}
+
+/* If we can find a section in FILENAME with BFD index INDEX, adjust
+ it to ADDRESS. */
+
+void
+exec_set_section_address (const char *filename, int index, CORE_ADDR address)
+{
+ struct section_table *p;
+
+ for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++)
+ {
+ if (strcmp (filename, p->bfd->filename) == 0
+ && index == p->the_bfd_section->index)
+ {
+ p->endaddr += address - p->addr;
+ p->addr = address;
+ }
+ }
}
/* If mourn is being called in all the right places, this could be say
breakpoint_init_inferior). */
static int
-ignore (CORE_ADDR addr, char *contents)
+ignore (struct bp_target_info *bp_tgt)
{
return 0;
}
exec_ops.to_open = exec_open;
exec_ops.to_close = exec_close;
exec_ops.to_attach = find_default_attach;
- exec_ops.to_require_attach = find_default_require_attach;
- exec_ops.to_require_detach = find_default_require_detach;
- exec_ops.to_xfer_memory = xfer_memory;
+ exec_ops.deprecated_xfer_memory = xfer_memory;
exec_ops.to_files_info = exec_files_info;
exec_ops.to_insert_breakpoint = ignore;
exec_ops.to_remove_breakpoint = ignore;
exec_ops.to_create_inferior = find_default_create_inferior;
- exec_ops.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior;
exec_ops.to_stratum = file_stratum;
exec_ops.to_has_memory = 1;
exec_ops.to_make_corefile_notes = exec_make_note_section;
if (!dbx_commands)
{
- c = add_cmd ("file", class_files, file_command,
- "Use FILE as program to be debugged.\n\
+ c = add_cmd ("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.", &cmdlist);
+No arg means to have no executable file and no symbols."), &cmdlist);
set_cmd_completer (c, filename_completer);
}
- c = add_cmd ("exec-file", class_files, exec_file_command,
- "Use FILE as program for getting contents of pure memory.\n\
+ c = add_cmd ("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.", &cmdlist);
+No arg means have no executable file."), &cmdlist);
set_cmd_completer (c, filename_completer);
- add_com ("section", class_files, set_section_command,
- "Change the base address of section SECTION of the exec file to ADDR.\n\
+ 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.");
+``info files'' command lists all the sections and their addresses."));
- add_show_from_set
- (add_set_cmd ("write", class_support, var_boolean, (char *) &write_files,
- "Set writing into executable and core files.",
- &setlist),
- &showlist);
+ add_setshow_boolean_cmd ("write", class_support, &write_files, _("\
+Set writing into executable and core files."), _("\
+Show writing into executable and core files."), NULL,
+ NULL,
+ show_write_files,
+ &setlist, &showlist);
add_target (&exec_ops);
}
static char *
exec_make_note_section (bfd *obfd, int *note_size)
{
- error ("Can't create a corefile");
+ error (_("Can't create a corefile"));
}