800 lines
24 KiB
C
800 lines
24 KiB
C
/* Work with executable files, for GDB.
|
||
Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1997, 1998
|
||
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
|
||
(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 "frame.h"
|
||
#include "inferior.h"
|
||
#include "target.h"
|
||
#include "gdbcmd.h"
|
||
#include "language.h"
|
||
#include "symfile.h"
|
||
#include "objfiles.h"
|
||
|
||
#ifdef USG
|
||
#include <sys/types.h>
|
||
#endif
|
||
|
||
#include <fcntl.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 PARAMS ((bfd *, bfd *));
|
||
|
||
void (*file_changed_hook) PARAMS ((char *));
|
||
|
||
/* Prototypes for local functions */
|
||
|
||
static void add_to_section_table PARAMS ((bfd *, sec_ptr, PTR));
|
||
|
||
static void exec_close PARAMS ((int));
|
||
|
||
static void file_command PARAMS ((char *, int));
|
||
|
||
static void set_section_command PARAMS ((char *, int));
|
||
|
||
static void exec_files_info PARAMS ((struct target_ops *));
|
||
|
||
static void bfdsec_to_vmap PARAMS ((bfd *, sec_ptr, PTR));
|
||
|
||
static int ignore PARAMS ((CORE_ADDR, char *));
|
||
|
||
extern int info_verbose;
|
||
|
||
/* The Binary File Descriptor handle for the executable file. */
|
||
|
||
bfd *exec_bfd = NULL;
|
||
|
||
/* Whether to open exec and core files read-only or read-write. */
|
||
|
||
int write_files = 0;
|
||
|
||
/* 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;
|
||
|
||
/* Forward decl */
|
||
|
||
extern struct target_ops exec_ops;
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
exec_close (quitting)
|
||
int quitting;
|
||
{
|
||
int need_symtab_cleanup = 0;
|
||
struct vmap *vp, *nxt;
|
||
|
||
for (nxt = vmap; nxt != NULL; )
|
||
{
|
||
vp = nxt;
|
||
nxt = vp->nxt;
|
||
|
||
/* if there is an objfile associated with this bfd,
|
||
free_objfile() will do proper cleanup of objfile *and* bfd. */
|
||
|
||
if (vp->objfile)
|
||
{
|
||
free_objfile (vp->objfile);
|
||
need_symtab_cleanup = 1;
|
||
}
|
||
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",
|
||
vp->name, bfd_errmsg (bfd_get_error ()));
|
||
|
||
/* FIXME: This routine is #if 0'd in symfile.c. What should we
|
||
be doing here? Should we just free everything in
|
||
vp->objfile->symtabs? Should free_objfile do that?
|
||
FIXME-as-well: free_objfile already free'd vp->name, so it isn't
|
||
valid here. */
|
||
free_named_symtabs (vp->name);
|
||
free (vp);
|
||
}
|
||
|
||
vmap = NULL;
|
||
|
||
if (exec_bfd)
|
||
{
|
||
char *name = bfd_get_filename (exec_bfd);
|
||
|
||
if (!bfd_close (exec_bfd))
|
||
warning ("cannot close \"%s\": %s",
|
||
name, bfd_errmsg (bfd_get_error ()));
|
||
free (name);
|
||
exec_bfd = NULL;
|
||
}
|
||
|
||
if (exec_ops.to_sections)
|
||
{
|
||
free ((PTR)exec_ops.to_sections);
|
||
exec_ops.to_sections = NULL;
|
||
exec_ops.to_sections_end = NULL;
|
||
}
|
||
}
|
||
|
||
/* Process the first arg in ARGS as the new exec file.
|
||
|
||
This function is intended to be behave essentially the same
|
||
as exec_file_command, except that the latter will detect when
|
||
a target is being debugged, and will ask the user whether it
|
||
should be shut down first. (If the answer is "no", then the
|
||
new file is ignored.)
|
||
|
||
This file is used by exec_file_command, to do the work of opening
|
||
and processing the exec file after any prompting has happened.
|
||
|
||
And, it is used by child_attach, when the attach command was
|
||
given a pid but not a exec pathname, and the attach command could
|
||
figure out the pathname from the pid. (In this case, we shouldn't
|
||
ask the user whether the current target should be shut down --
|
||
we're supplying the exec pathname late for good reason.) */
|
||
|
||
void
|
||
exec_file_attach (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
char **argv;
|
||
char *filename;
|
||
|
||
/* Remove any previous exec file. */
|
||
unpush_target (&exec_ops);
|
||
|
||
/* Now open and digest the file the user requested, if any. */
|
||
|
||
if (args)
|
||
{
|
||
char *scratch_pathname;
|
||
int scratch_chan;
|
||
|
||
/* 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 ((make_cleanup_func) freeargv, (char *) argv);
|
||
|
||
for (; (*argv != NULL) && (**argv == '-'); argv++) {;}
|
||
if (*argv == NULL)
|
||
error ("no exec file name was specified");
|
||
|
||
filename = tilde_expand (*argv);
|
||
make_cleanup (free, filename);
|
||
|
||
scratch_chan = openp (getenv ("PATH"), 1, filename,
|
||
write_files? O_RDWR|O_BINARY: O_RDONLY|O_BINARY, 0,
|
||
&scratch_pathname);
|
||
#if defined(__GO32__) || defined(_WIN32)
|
||
if (scratch_chan < 0)
|
||
{
|
||
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);
|
||
}
|
||
#endif
|
||
if (scratch_chan < 0)
|
||
perror_with_name (filename);
|
||
exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan);
|
||
|
||
if (!exec_bfd)
|
||
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 = strdup (scratch_pathname);
|
||
make_cleanup (free, 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",
|
||
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
|
||
/* Setup initial vmap. */
|
||
|
||
map_vmap (exec_bfd, 0);
|
||
if (vmap == NULL)
|
||
{
|
||
/* 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",
|
||
scratch_pathname, bfd_errmsg (bfd_get_error ()));
|
||
}
|
||
#endif /* 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",
|
||
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;
|
||
}
|
||
}
|
||
|
||
validate_files ();
|
||
|
||
set_gdbarch_from_file (exec_bfd);
|
||
|
||
push_target (&exec_ops);
|
||
|
||
/* Tell display code (if any) about the changed file name. */
|
||
if (exec_file_display_hook)
|
||
(*exec_file_display_hook) (filename);
|
||
}
|
||
else if (from_tty)
|
||
printf_unfiltered ("No executable file now.\n");
|
||
}
|
||
|
||
/* Process the first arg in ARGS as the new exec file.
|
||
|
||
Note that we have to explicitly ignore additional args, since we can
|
||
be called from file_command(), which also calls symbol_file_command()
|
||
which can take multiple args. */
|
||
|
||
void
|
||
exec_file_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
char **argv;
|
||
char *filename;
|
||
|
||
target_preopen (from_tty);
|
||
|
||
exec_file_attach (args, from_tty);
|
||
}
|
||
|
||
/* Set both the exec file and the symbol file, in one command.
|
||
What a novelty. Why did GDB go through four major releases before this
|
||
command was added? */
|
||
|
||
static void
|
||
file_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
/* FIXME, if we lose on reading the symbol file, we should revert
|
||
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);
|
||
}
|
||
|
||
|
||
/* Locate all mappable sections of a BFD file.
|
||
table_pp_char is a char * to get it through bfd_map_over_sections;
|
||
we cast it back to its proper type. */
|
||
|
||
static void
|
||
add_to_section_table (abfd, asect, table_pp_char)
|
||
bfd *abfd;
|
||
sec_ptr asect;
|
||
PTR table_pp_char;
|
||
{
|
||
struct section_table **table_pp = (struct section_table **)table_pp_char;
|
||
flagword aflag;
|
||
|
||
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);
|
||
(*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect);
|
||
(*table_pp)++;
|
||
}
|
||
|
||
/* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
|
||
Returns 0 if OK, 1 on error. */
|
||
|
||
int
|
||
build_section_table (some_bfd, start, end)
|
||
bfd *some_bfd;
|
||
struct section_table **start, **end;
|
||
{
|
||
unsigned count;
|
||
|
||
count = bfd_count_sections (some_bfd);
|
||
if (*start)
|
||
free ((PTR)*start);
|
||
*start = (struct section_table *) xmalloc (count * sizeof (**start));
|
||
*end = *start;
|
||
bfd_map_over_sections (some_bfd, add_to_section_table, (char *)end);
|
||
if (*end > *start + count)
|
||
abort();
|
||
/* We could realloc the table, but it probably loses for most files. */
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
bfdsec_to_vmap(abfd, sect, arg3)
|
||
bfd *abfd;
|
||
sec_ptr sect;
|
||
PTR arg3;
|
||
{
|
||
struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3;
|
||
struct vmap *vp;
|
||
|
||
vp = vmap_bfd->pvmap;
|
||
|
||
if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0)
|
||
return;
|
||
|
||
if (STREQ (bfd_section_name (abfd, sect), ".text"))
|
||
{
|
||
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"))
|
||
{
|
||
vp->dstart = bfd_section_vma (abfd, sect);
|
||
vp->dend = vp->dstart + bfd_section_size (abfd, sect);
|
||
vp->dvma = bfd_section_vma (abfd, sect);
|
||
}
|
||
/* Silently ignore other types of sections. (FIXME?) */
|
||
}
|
||
|
||
/* Make a vmap for ABFD which might be a member of the archive ARCH.
|
||
Return the new vmap. */
|
||
|
||
struct vmap *
|
||
map_vmap (abfd, arch)
|
||
bfd *abfd;
|
||
bfd *arch;
|
||
{
|
||
struct vmap_and_bfd vmap_bfd;
|
||
struct vmap *vp, **vpp;
|
||
|
||
vp = (struct vmap *) xmalloc (sizeof (*vp));
|
||
memset ((char *) vp, '\0', sizeof (*vp));
|
||
vp->nxt = 0;
|
||
vp->bfd = abfd;
|
||
vp->name = bfd_get_filename (arch ? arch : abfd);
|
||
vp->member = arch ? bfd_get_filename (abfd) : "";
|
||
|
||
vmap_bfd.pbfd = arch;
|
||
vmap_bfd.pvmap = vp;
|
||
bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd);
|
||
|
||
/* Find the end of the list and append. */
|
||
for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt)
|
||
;
|
||
*vpp = vp;
|
||
|
||
return vp;
|
||
}
|
||
|
||
/* Read or write the exec file.
|
||
|
||
Args are address within a BFD 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));
|
||
asection *section;
|
||
|
||
if (len <= 0)
|
||
abort();
|
||
|
||
if (overlay_debugging)
|
||
{
|
||
section = find_pc_overlay (memaddr);
|
||
if (pc_in_unmapped_range (memaddr, section))
|
||
memaddr = overlay_mapped_address (memaddr, section);
|
||
}
|
||
|
||
memend = memaddr + len;
|
||
xfer_fn = write ? bfd_set_section_contents : bfd_get_section_contents;
|
||
nextsectaddr = memend;
|
||
|
||
#if 0 /* Stu's implementation */
|
||
/* If a section has been specified, try to use it. Note that we cannot use the
|
||
specified section directly. This is because it usually comes from the
|
||
symbol file, which may be different from the exec or core file. Instead, we
|
||
have to lookup the specified section by name in the bfd associated with
|
||
to_sections. */
|
||
|
||
if (target_memory_bfd_section)
|
||
{
|
||
asection *s;
|
||
bfd *abfd;
|
||
asection *target_section;
|
||
bfd *target_bfd;
|
||
|
||
s = target_memory_bfd_section;
|
||
abfd = s->owner;
|
||
|
||
target_bfd = target->to_sections->bfd;
|
||
target_section = bfd_get_section_by_name (target_bfd, bfd_section_name (abfd, s));
|
||
|
||
if (target_section)
|
||
{
|
||
bfd_vma sec_addr;
|
||
bfd_size_type sec_size;
|
||
|
||
sec_addr = bfd_section_vma (target_bfd, target_section);
|
||
sec_size = target_section->_raw_size;
|
||
|
||
/* Make sure the requested memory starts inside the section. */
|
||
|
||
if (memaddr >= sec_addr
|
||
&& memaddr < sec_addr + sec_size)
|
||
{
|
||
/* Cut back length in case request overflows the end of the section. */
|
||
len = min (len, sec_addr + sec_size - memaddr);
|
||
|
||
res = xfer_fn (target_bfd, target_section, myaddr, memaddr - sec_addr, len);
|
||
|
||
return res ? len : 0;
|
||
}
|
||
}
|
||
}
|
||
#endif /* 0, Stu's implementation */
|
||
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)
|
||
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);
|
||
return (res != 0) ? len : 0;
|
||
}
|
||
else if (memaddr >= p->endaddr)
|
||
{
|
||
/* 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->the_bfd_section, myaddr,
|
||
memaddr - p->addr, len);
|
||
return (res != 0) ? len : 0;
|
||
}
|
||
else
|
||
nextsectaddr = min (nextsectaddr, p->addr);
|
||
}
|
||
|
||
if (nextsectaddr >= memend)
|
||
return 0; /* We can't help */
|
||
else
|
||
return - (nextsectaddr - memaddr); /* Next boundary where we can help */
|
||
}
|
||
|
||
#ifdef FIXME
|
||
#ifdef REG_STACK_SEGMENT
|
||
/* MOVE TO BFD... */
|
||
/* Pyramids and AM29000s have an extra segment in the virtual address space
|
||
for the (control) stack of register-window frames. The AM29000 folk
|
||
call it the "register stack" rather than the "memory stack". */
|
||
else if (memaddr >= reg_stack_start && memaddr < reg_stack_end)
|
||
{
|
||
i = min (len, reg_stack_end - memaddr);
|
||
fileptr = memaddr - reg_stack_start + reg_stack_offset;
|
||
wanna_xfer = coredata;
|
||
}
|
||
#endif /* REG_STACK_SEGMENT */
|
||
#endif /* FIXME */
|
||
|
||
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));
|
||
if (abfd == exec_bfd)
|
||
{
|
||
printf_filtered ("\tEntry point: ");
|
||
print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout);
|
||
printf_filtered ("\n");
|
||
}
|
||
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"));
|
||
if (info_verbose)
|
||
printf_filtered (" @ %s",
|
||
local_hex_string_custom ((unsigned long) p->the_bfd_section->filepos, "08l"));
|
||
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 ("\n");
|
||
}
|
||
}
|
||
|
||
static void
|
||
exec_files_info (t)
|
||
struct target_ops *t;
|
||
{
|
||
print_section_info (t, exec_bfd);
|
||
|
||
if (vmap)
|
||
{
|
||
struct vmap *vp;
|
||
|
||
printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name);
|
||
printf_unfiltered ("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n",
|
||
"tstart", "tend", "dstart", "dend", "section",
|
||
"file(member)");
|
||
|
||
for (vp = vmap; vp; vp = vp->nxt)
|
||
printf_unfiltered ("\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 ? ")" : "");
|
||
}
|
||
}
|
||
|
||
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->the_bfd_section), seclen)
|
||
&& bfd_section_name (exec_bfd, p->the_bfd_section)[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);
|
||
}
|
||
|
||
/* If mourn is being called in all the right places, this could be say
|
||
`gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */
|
||
|
||
static int
|
||
ignore (addr, contents)
|
||
CORE_ADDR addr;
|
||
char *contents;
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
struct target_ops exec_ops = {
|
||
"exec", /* to_shortname */
|
||
"Local exec file", /* to_longname */
|
||
"Use an executable file as a target.\n\
|
||
Specify the filename of the executable file.", /* to_doc */
|
||
exec_file_command, /* to_open */
|
||
exec_close, /* to_close */
|
||
find_default_attach, /* to_attach */
|
||
NULL, /* to_post_attach */
|
||
find_default_require_attach, /* to_require_attach */
|
||
0, /* to_detach */
|
||
find_default_require_detach, /* to_require_detach */
|
||
0, /* to_resume */
|
||
0, /* to_wait */
|
||
NULL, /* to_post_wait */
|
||
0, /* to_fetch_registers */
|
||
0, /* to_store_registers */
|
||
0, /* to_prepare_to_store */
|
||
xfer_memory, /* to_xfer_memory */
|
||
exec_files_info, /* to_files_info */
|
||
ignore, /* to_insert_breakpoint */
|
||
ignore, /* to_remove_breakpoint */
|
||
0, /* to_terminal_init */
|
||
0, /* to_terminal_inferior */
|
||
0, /* to_terminal_ours_for_output */
|
||
0, /* to_terminal_ours */
|
||
0, /* to_terminal_info */
|
||
0, /* to_kill */
|
||
0, /* to_load */
|
||
0, /* to_lookup_symbol */
|
||
find_default_create_inferior, /* to_create_inferior */
|
||
NULL, /* to_post_startup_inferior */
|
||
NULL, /* to_acknowledge_created_inferior */
|
||
find_default_clone_and_follow_inferior, /* to_clone_and_follow_inferior */
|
||
NULL, /* to_post_follow_inferior_by_clone */
|
||
NULL, /* to_insert_fork_catchpoint */
|
||
NULL, /* to_remove_fork_catchpoint */
|
||
NULL, /* to_insert_vfork_catchpoint */
|
||
NULL, /* to_remove_vfork_catchpoint */
|
||
NULL, /* to_has_forked */
|
||
NULL, /* to_has_vforked */
|
||
NULL, /* to_can_follow_vfork_prior_to_exec */
|
||
NULL, /* to_post_follow_vfork */
|
||
NULL, /* to_insert_exec_catchpoint */
|
||
NULL, /* to_remove_exec_catchpoint */
|
||
NULL, /* to_has_execd */
|
||
NULL, /* to_reported_exec_events_per_exec_call */
|
||
NULL, /* to_has_syscall_event */
|
||
NULL, /* to_has_exited */
|
||
0, /* to_mourn_inferior */
|
||
0, /* to_can_run */
|
||
0, /* to_notice_signals */
|
||
0, /* to_thread_alive */
|
||
0, /* to_stop */
|
||
NULL, /* to_enable_exception_callback */
|
||
NULL, /* to_get_current_exception_event */
|
||
NULL, /* to_pid_to_exec_file */
|
||
NULL, /* to_core_file_to_sym_file */
|
||
file_stratum, /* to_stratum */
|
||
0, /* to_next */
|
||
0, /* to_has_all_memory */
|
||
1, /* to_has_memory */
|
||
0, /* to_has_stack */
|
||
0, /* to_has_registers */
|
||
0, /* to_has_execution */
|
||
0, /* to_sections */
|
||
0, /* to_sections_end */
|
||
OPS_MAGIC, /* to_magic */
|
||
};
|
||
|
||
void
|
||
_initialize_exec()
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
if (!dbx_commands)
|
||
{
|
||
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);
|
||
c->completer = filename_completer;
|
||
}
|
||
|
||
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);
|
||
c->completer = filename_completer;
|
||
|
||
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_show_from_set
|
||
(add_set_cmd ("write", class_support, var_boolean, (char *)&write_files,
|
||
"Set writing into executable and core files.",
|
||
&setlist),
|
||
&showlist);
|
||
|
||
add_target (&exec_ops);
|
||
}
|