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Projet_SETI_RISC-V/riscv-gnu-toolchain/gdb/binutils/bucomm.c

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projet
2023-03-06 14:48:14 +01:00
/* bucomm.c -- Bin Utils COMmon code.
Copyright (C) 1991-2022 Free Software Foundation, Inc.
This file is part of GNU Binutils.
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 3 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., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
/* We might put this in a library someday so it could be dynamically
loaded, but for now it's not necessary. */
#include "sysdep.h"
#include "bfd.h"
#include "libiberty.h"
#include "filenames.h"
#include <time.h>
#include <assert.h>
#include "bucomm.h"
/* Error reporting. */
char *program_name;
void
bfd_nonfatal (const char *string)
{
const char *errmsg;
enum bfd_error err = bfd_get_error ();
if (err == bfd_error_no_error)
errmsg = _("cause of error unknown");
else
errmsg = bfd_errmsg (err);
fflush (stdout);
if (string)
fprintf (stderr, "%s: %s: %s\n", program_name, string, errmsg);
else
fprintf (stderr, "%s: %s\n", program_name, errmsg);
}
/* Issue a non fatal error message. FILENAME, or if NULL then BFD,
are used to indicate the problematic file. SECTION, if non NULL,
is used to provide a section name. If FORMAT is non-null, then it
is used to print additional information via vfprintf. Finally the
bfd error message is printed. In summary, error messages are of
one of the following forms:
PROGRAM: file: bfd-error-message
PROGRAM: file[section]: bfd-error-message
PROGRAM: file: printf-message: bfd-error-message
PROGRAM: file[section]: printf-message: bfd-error-message. */
void
bfd_nonfatal_message (const char *filename,
const bfd *abfd,
const asection *section,
const char *format, ...)
{
const char *errmsg;
const char *section_name;
enum bfd_error err = bfd_get_error ();
if (err == bfd_error_no_error)
errmsg = _("cause of error unknown");
else
errmsg = bfd_errmsg (err);
fflush (stdout);
section_name = NULL;
fprintf (stderr, "%s", program_name);
if (abfd)
{
if (!filename)
filename = bfd_get_archive_filename (abfd);
if (section)
section_name = bfd_section_name (section);
}
if (section_name)
fprintf (stderr, ": %s[%s]", filename, section_name);
else
fprintf (stderr, ": %s", filename);
if (format)
{
va_list args;
va_start (args, format);
fprintf (stderr, ": ");
vfprintf (stderr, format, args);
va_end (args);
}
fprintf (stderr, ": %s\n", errmsg);
}
void
bfd_fatal (const char *string)
{
bfd_nonfatal (string);
xexit (1);
}
void
report (const char * format, va_list args)
{
fflush (stdout);
fprintf (stderr, "%s: ", program_name);
vfprintf (stderr, format, args);
putc ('\n', stderr);
}
void
fatal (const char *format, ...)
{
va_list args;
va_start (args, format);
report (format, args);
va_end (args);
xexit (1);
}
void
non_fatal (const char *format, ...)
{
va_list args;
va_start (args, format);
report (format, args);
va_end (args);
}
/* Set the default BFD target based on the configured target. Doing
this permits the binutils to be configured for a particular target,
and linked against a shared BFD library which was configured for a
different target. */
void
set_default_bfd_target (void)
{
/* The macro TARGET is defined by Makefile. */
const char *target = TARGET;
if (! bfd_set_default_target (target))
fatal (_("can't set BFD default target to `%s': %s"),
target, bfd_errmsg (bfd_get_error ()));
}
/* After a FALSE return from bfd_check_format_matches with
bfd_get_error () == bfd_error_file_ambiguously_recognized, print
the possible matching targets. */
void
list_matching_formats (char **p)
{
fflush (stdout);
fprintf (stderr, _("%s: Matching formats:"), program_name);
while (*p)
fprintf (stderr, " %s", *p++);
fputc ('\n', stderr);
}
/* List the supported targets. */
void
list_supported_targets (const char *name, FILE *f)
{
int t;
const char **targ_names;
if (name == NULL)
fprintf (f, _("Supported targets:"));
else
fprintf (f, _("%s: supported targets:"), name);
targ_names = bfd_target_list ();
for (t = 0; targ_names[t] != NULL; t++)
fprintf (f, " %s", targ_names[t]);
fprintf (f, "\n");
free (targ_names);
}
/* List the supported architectures. */
void
list_supported_architectures (const char *name, FILE *f)
{
const char ** arch;
const char ** arches;
if (name == NULL)
fprintf (f, _("Supported architectures:"));
else
fprintf (f, _("%s: supported architectures:"), name);
for (arch = arches = bfd_arch_list (); *arch; arch++)
fprintf (f, " %s", *arch);
fprintf (f, "\n");
free (arches);
}
static const char *
endian_string (enum bfd_endian endian)
{
switch (endian)
{
case BFD_ENDIAN_BIG: return _("big endian");
case BFD_ENDIAN_LITTLE: return _("little endian");
default: return _("endianness unknown");
}
}
/* Data passed to do_display_target and other target iterators. */
struct display_target {
/* Temp file. */
char *filename;
/* Return status. */
int error;
/* Number of targets. */
int count;
/* Size of info in bytes. */
size_t alloc;
/* Per-target info. */
struct {
/* Target name. */
const char *name;
/* Non-zero if target/arch combination supported. */
unsigned char arch[bfd_arch_last - bfd_arch_obscure - 1];
} *info;
};
/* List the targets that BFD is configured to support, each followed
by its endianness and the architectures it supports. Also build
info about target/archs. */
static int
do_display_target (const bfd_target *targ, void *data)
{
struct display_target *param = (struct display_target *) data;
bfd *abfd;
size_t amt;
param->count += 1;
amt = param->count * sizeof (*param->info);
if (param->alloc < amt)
{
size_t size = ((param->count < 64 ? 64 : param->count)
* sizeof (*param->info) * 2);
param->info = xrealloc (param->info, size);
memset ((char *) param->info + param->alloc, 0, size - param->alloc);
param->alloc = size;
}
param->info[param->count - 1].name = targ->name;
printf (_("%s\n (header %s, data %s)\n"), targ->name,
endian_string (targ->header_byteorder),
endian_string (targ->byteorder));
abfd = bfd_openw (param->filename, targ->name);
if (abfd == NULL)
{
bfd_nonfatal (param->filename);
param->error = 1;
}
else if (!bfd_set_format (abfd, bfd_object))
{
if (bfd_get_error () != bfd_error_invalid_operation)
{
bfd_nonfatal (targ->name);
param->error = 1;
}
}
else
{
enum bfd_architecture a;
for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++)
if (bfd_set_arch_mach (abfd, a, 0))
{
printf (" %s\n", bfd_printable_arch_mach (a, 0));
param->info[param->count - 1].arch[a - bfd_arch_obscure - 1] = 1;
}
}
if (abfd != NULL)
bfd_close_all_done (abfd);
return param->error;
}
static void
display_target_list (struct display_target *arg)
{
arg->filename = make_temp_file (NULL);
arg->error = 0;
arg->count = 0;
arg->alloc = 0;
arg->info = NULL;
bfd_iterate_over_targets (do_display_target, arg);
unlink (arg->filename);
free (arg->filename);
}
/* Calculate how many targets we can print across the page. */
static int
do_info_size (int targ, int width, const struct display_target *arg)
{
while (targ < arg->count)
{
width -= strlen (arg->info[targ].name) + 1;
if (width < 0)
return targ;
++targ;
}
return targ;
}
/* Print header of target names. */
static void
do_info_header (int targ, int stop_targ, const struct display_target *arg)
{
while (targ != stop_targ)
printf ("%s ", arg->info[targ++].name);
}
/* Print a table row. */
static void
do_info_row (int targ, int stop_targ, enum bfd_architecture a,
const struct display_target *arg)
{
while (targ != stop_targ)
{
if (arg->info[targ].arch[a - bfd_arch_obscure - 1])
fputs (arg->info[targ].name, stdout);
else
{
int l = strlen (arg->info[targ].name);
while (l--)
putchar ('-');
}
++targ;
if (targ != stop_targ)
putchar (' ');
}
}
/* Print tables of all the target-architecture combinations that
BFD has been configured to support. */
static void
display_target_tables (const struct display_target *arg)
{
const char *columns;
int width, start_targ, stop_targ;
enum bfd_architecture arch;
int longest_arch = 0;
for (arch = bfd_arch_obscure + 1; arch < bfd_arch_last; arch++)
{
const char *s = bfd_printable_arch_mach (arch, 0);
int len = strlen (s);
if (len > longest_arch)
longest_arch = len;
}
width = 0;
columns = getenv ("COLUMNS");
if (columns != NULL)
width = atoi (columns);
if (width == 0)
width = 80;
for (start_targ = 0; start_targ < arg->count; start_targ = stop_targ)
{
stop_targ = do_info_size (start_targ, width - longest_arch - 1, arg);
printf ("\n%*s", longest_arch + 1, " ");
do_info_header (start_targ, stop_targ, arg);
putchar ('\n');
for (arch = bfd_arch_obscure + 1; arch < bfd_arch_last; arch++)
{
if (strcmp (bfd_printable_arch_mach (arch, 0), "UNKNOWN!") != 0)
{
printf ("%*s ", longest_arch,
bfd_printable_arch_mach (arch, 0));
do_info_row (start_targ, stop_targ, arch, arg);
putchar ('\n');
}
}
}
}
int
display_info (void)
{
struct display_target arg;
printf (_("BFD header file version %s\n"), BFD_VERSION_STRING);
display_target_list (&arg);
if (!arg.error)
display_target_tables (&arg);
return arg.error;
}
/* Display the archive header for an element as if it were an ls -l listing:
Mode User\tGroup\tSize\tDate Name */
void
print_arelt_descr (FILE *file, bfd *abfd, bool verbose, bool offsets)
{
struct stat buf;
if (verbose)
{
if (bfd_stat_arch_elt (abfd, &buf) == 0)
{
char modebuf[11];
char timebuf[40];
time_t when = buf.st_mtime;
const char *ctime_result = (const char *) ctime (&when);
bfd_size_type size;
/* PR binutils/17605: Check for corrupt time values. */
if (ctime_result == NULL)
sprintf (timebuf, _("<time data corrupt>"));
else
/* POSIX format: skip weekday and seconds from ctime output. */
sprintf (timebuf, "%.12s %.4s", ctime_result + 4, ctime_result + 20);
mode_string (buf.st_mode, modebuf);
modebuf[10] = '\0';
size = buf.st_size;
/* POSIX 1003.2/D11 says to skip first character (entry type). */
fprintf (file, "%s %ld/%ld %6" BFD_VMA_FMT "u %s ", modebuf + 1,
(long) buf.st_uid, (long) buf.st_gid,
size, timebuf);
}
}
fprintf (file, "%s", bfd_get_filename (abfd));
if (offsets)
{
if (bfd_is_thin_archive (abfd) && abfd->proxy_origin)
fprintf (file, " 0x%lx", (unsigned long) abfd->proxy_origin);
else if (!bfd_is_thin_archive (abfd) && abfd->origin)
fprintf (file, " 0x%lx", (unsigned long) abfd->origin);
}
fprintf (file, "\n");
}
/* Return a path for a new temporary file in the same directory
as file PATH. */
static char *
template_in_dir (const char *path)
{
#define template "stXXXXXX"
const char *slash = strrchr (path, '/');
char *tmpname;
size_t len;
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
{
/* We could have foo/bar\\baz, or foo\\bar, or d:bar. */
char *bslash = strrchr (path, '\\');
if (slash == NULL || (bslash != NULL && bslash > slash))
slash = bslash;
if (slash == NULL && path[0] != '\0' && path[1] == ':')
slash = path + 1;
}
#endif
if (slash != (char *) NULL)
{
len = slash - path;
tmpname = (char *) xmalloc (len + sizeof (template) + 2);
memcpy (tmpname, path, len);
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
/* If tmpname is "X:", appending a slash will make it a root
directory on drive X, which is NOT the same as the current
directory on drive X. */
if (len == 2 && tmpname[1] == ':')
tmpname[len++] = '.';
#endif
tmpname[len++] = '/';
}
else
{
tmpname = (char *) xmalloc (sizeof (template));
len = 0;
}
memcpy (tmpname + len, template, sizeof (template));
return tmpname;
#undef template
}
/* Return the name of a created temporary file in the same directory
as FILENAME. */
char *
make_tempname (const char *filename, int *ofd)
{
char *tmpname = template_in_dir (filename);
int fd;
#ifdef HAVE_MKSTEMP
fd = mkstemp (tmpname);
#else
tmpname = mktemp (tmpname);
if (tmpname == NULL)
return NULL;
fd = open (tmpname, O_RDWR | O_CREAT | O_EXCL, 0600);
#endif
if (fd == -1)
{
free (tmpname);
return NULL;
}
*ofd = fd;
return tmpname;
}
/* Return the name of a created temporary directory inside the
directory containing FILENAME. */
char *
make_tempdir (const char *filename)
{
char *tmpname = template_in_dir (filename);
#ifdef HAVE_MKDTEMP
return mkdtemp (tmpname);
#else
tmpname = mktemp (tmpname);
if (tmpname == NULL)
return NULL;
#if defined (_WIN32) && !defined (__CYGWIN32__)
if (mkdir (tmpname) != 0)
return NULL;
#else
if (mkdir (tmpname, 0700) != 0)
return NULL;
#endif
return tmpname;
#endif
}
/* Parse a string into a VMA, with a fatal error if it can't be
parsed. */
bfd_vma
parse_vma (const char *s, const char *arg)
{
bfd_vma ret;
const char *end;
ret = bfd_scan_vma (s, &end, 0);
if (*end != '\0')
fatal (_("%s: bad number: %s"), arg, s);
return ret;
}
/* Returns the size of the named file. If the file does not
exist, or if it is not a real file, then a suitable non-fatal
error message is printed and (off_t) -1 is returned. */
off_t
get_file_size (const char * file_name)
{
struct stat statbuf;
if (file_name == NULL)
return (off_t) -1;
if (stat (file_name, &statbuf) < 0)
{
if (errno == ENOENT)
non_fatal (_("'%s': No such file"), file_name);
else
non_fatal (_("Warning: could not locate '%s'. reason: %s"),
file_name, strerror (errno));
}
else if (S_ISDIR (statbuf.st_mode))
non_fatal (_("Warning: '%s' is a directory"), file_name);
else if (! S_ISREG (statbuf.st_mode))
non_fatal (_("Warning: '%s' is not an ordinary file"), file_name);
else if (statbuf.st_size < 0)
non_fatal (_("Warning: '%s' has negative size, probably it is too large"),
file_name);
#if defined (_WIN32) && !defined (__CYGWIN__)
else if (statbuf.st_size == 0)
{
/* MS-Windows 'stat' reports the null device as a regular file;
fix that. */
int fd = open (file_name, O_RDONLY | O_BINARY);
if (isatty (fd))
{
close (fd);
non_fatal (_("Warning: '%s' is not an ordinary file"),
/* libtool wants to see /dev/null in the output. */
strcasecmp (file_name, "nul") ? file_name : "/dev/null");
}
}
#endif
else
return statbuf.st_size;
return (off_t) -1;
}
/* Return the filename in a static buffer. */
const char *
bfd_get_archive_filename (const bfd *abfd)
{
static size_t curr = 0;
static char *buf;
size_t needed;
assert (abfd != NULL);
if (abfd->my_archive == NULL
|| bfd_is_thin_archive (abfd->my_archive))
return bfd_get_filename (abfd);
needed = (strlen (bfd_get_filename (abfd->my_archive))
+ strlen (bfd_get_filename (abfd)) + 3);
if (needed > curr)
{
if (curr)
free (buf);
curr = needed + (needed >> 1);
buf = (char *) xmalloc (curr);
}
sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive),
bfd_get_filename (abfd));
return buf;
}
/* Returns TRUE iff PATHNAME, a filename of an archive member,
is valid for writing. For security reasons absolute paths
and paths containing /../ are not allowed. See PR 17533. */
bool
is_valid_archive_path (char const * pathname)
{
const char * n = pathname;
if (IS_ABSOLUTE_PATH (n))
return false;
while (*n)
{
if (*n == '.' && *++n == '.' && ( ! *++n || IS_DIR_SEPARATOR (*n)))
return false;
while (*n && ! IS_DIR_SEPARATOR (*n))
n++;
while (IS_DIR_SEPARATOR (*n))
n++;
}
return true;
}
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