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* emultempl/elf32.em (global_stat): New file static variable.

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(gld${EMULATION_NAME}_try_needed): Call stat_needed to make sure
	that the file has not already been included under another name.
	(gld${EMULATION_NAME}_stat_needed): New static function.
This commit is contained in:
Ian Lance Taylor 1995-10-02 17:59:14 +00:00
parent a6eed1d25f
commit 8055e7a883
2 changed files with 59 additions and 4 deletions
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7
ld/ChangeLog
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@ -1,3 +1,10 @@
Mon Oct 2 13:56:09 1995 Ian Lance Taylor <ian@cygnus.com>
* emultempl/elf32.em (global_stat): New file static variable.
(gld${EMULATION_NAME}_try_needed): Call stat_needed to make sure
that the file has not already been included under another name.
(gld${EMULATION_NAME}_stat_needed): New static function.
Fri Sep 29 12:00:18 1995 Doug Evans <dje@deneb.cygnus.com>
* scripttempl/armcoff.sc: Start .text at 0x8000.

56
ld/emultempl/elf32.em
View file

@ -48,6 +48,8 @@ static boolean gld${EMULATION_NAME}_open_dynamic_archive
static void gld${EMULATION_NAME}_after_open PARAMS ((void));
static void gld${EMULATION_NAME}_check_needed
PARAMS ((lang_input_statement_type *));
static void gld${EMULATION_NAME}_stat_needed
PARAMS ((lang_input_statement_type *));
static boolean gld${EMULATION_NAME}_search_needed
PARAMS ((const char *, const char *));
static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *));
@ -130,9 +132,10 @@ gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
}
/* These variables are required to pass information back and forth
between after_open and check_needed. */
between after_open and check_needed and stat_needed. */
static struct bfd_elf_link_needed_list *global_needed;
static struct stat global_stat;
static boolean global_found;
/* This is called after all the input files have been opened. */
@ -275,6 +278,25 @@ gld${EMULATION_NAME}_try_needed (name)
/* We've found a dynamic object matching the DT_NEEDED entry. */
/* We have already checked that there is no other input file of the
same name. We must now check again that we are not including the
same file twice. We need to do this because on many systems
libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
reference libc.so.1. If we have already included libc.so, we
don't want to include libc.so.1 if they are the same file, and we
can only check that using stat. */
if (bfd_stat (abfd, &global_stat) != 0)
einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
global_found = false;
lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
if (global_found)
{
/* Return true to indicate that we found the file, even though
we aren't going to do anything with it. */
return true;
}
/* Tell the ELF backend that don't want the output file to have a
DT_NEEDED entry for this file. */
bfd_elf_set_dt_needed_name (abfd, "");
@ -286,7 +308,7 @@ gld${EMULATION_NAME}_try_needed (name)
return true;
}
/* See if an input file matches a DT_NEEDED entry. */
/* See if an input file matches a DT_NEEDED entry by name. */
static void
gld${EMULATION_NAME}_check_needed (s)
@ -308,6 +330,30 @@ gld${EMULATION_NAME}_check_needed (s)
}
}
/* See if an input file matches a DT_NEEDED entry by running stat on
the file. */
static void
gld${EMULATION_NAME}_stat_needed (s)
lang_input_statement_type *s;
{
if (global_found)
return;
if (s->the_bfd != NULL)
{
struct stat st;
if (bfd_stat (s->the_bfd, &st) != 0)
einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
else
{
if (st.st_dev == global_stat.st_dev
&& st.st_ino == global_stat.st_ino)
global_found = true;
}
}
}
/* This is called after the sections have been attached to output
sections, but before any sizes or addresses have been set. */
@ -365,8 +411,10 @@ gld${EMULATION_NAME}_before_allocation ()
einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
is->the_bfd);
msg[sz] = '\0';
ret = link_info.callbacks->warning (&link_info, msg, is->the_bfd,
(asection *) NULL, (bfd_vma) 0);
ret = link_info.callbacks->warning (&link_info, msg,
(const char *) NULL,
is->the_bfd, (asection *) NULL,
(bfd_vma) 0);
ASSERT (ret);
free (msg);