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tidy elf_backend calls 

Function pointers in elfNN_bed that are initialized by elfxx-target.h
to non-zero values generally don't need a non-NULL test before calling
them.  Targets don't set a non-NULL function to NULL.  The one
exception being elfnn-ia64.c and that exception is removed here.

	* elf.c (_bfd_elf_setup_sections): Don't test known non-NULL
	backend functions for NULL before calling.
	(copy_special_section_fields, _bfd_elf_copy_private_bfd_data),
	(bfd_section_from_shdr, assign_section_numbers): Likewise.
	* elfcode.h (elf_write_relocs, elf_slurp_reloc_table): Likewise.
	* elfnn-ia64.c (ignore_errors): New function.
	(elf_backend_link_order_error_handler): Redefine as ignore_errors.
This commit is contained in:
Alan Modra 2020-03-18 07:31:47 +10:30
parent ce2ea1c7e0
commit a859124df2
4 changed files with 37 additions and 27 deletions
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10
bfd/ChangeLog
View File

@ -1,3 +1,13 @@
2020-03-20 Alan Modra <amodra@gmail.com>
* elf.c (_bfd_elf_setup_sections): Don't test known non-NULL
backend functions for NULL before calling.
(copy_special_section_fields, _bfd_elf_copy_private_bfd_data),
(bfd_section_from_shdr, assign_section_numbers): Likewise.
* elfcode.h (elf_write_relocs, elf_slurp_reloc_table): Likewise.
* elfnn-ia64.c (ignore_errors): New function.
(elf_backend_link_order_error_handler): Redefine as ignore_errors.
2020-03-19 Nick Clifton <nickc@redhat.com>
PR 25676

33
bfd/elf.c
View File

@ -857,11 +857,10 @@ _bfd_elf_setup_sections (bfd *abfd)
if (elfsec == 0)
{
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (bed->link_order_error_handler)
bed->link_order_error_handler
/* xgettext:c-format */
(_("%pB: warning: sh_link not set for section `%pA'"),
abfd, s);
bed->link_order_error_handler
/* xgettext:c-format */
(_("%pB: warning: sh_link not set for section `%pA'"),
abfd, s);
}
else
{
@ -1424,9 +1423,8 @@ copy_special_section_fields (const bfd *ibfd,
}
/* Allow the target a chance to decide how these fields should be set. */
if (bed->elf_backend_copy_special_section_fields != NULL
&& bed->elf_backend_copy_special_section_fields
(ibfd, obfd, iheader, oheader))
if (bed->elf_backend_copy_special_section_fields (ibfd, obfd,
iheader, oheader))
return TRUE;
/* We have an iheader which might match oheader, and which has non-zero
@ -1610,8 +1608,8 @@ _bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
{
/* Final attempt. Call the backend copy function
with a NULL input section. */
if (bed->elf_backend_copy_special_section_fields != NULL)
(void) bed->elf_backend_copy_special_section_fields (ibfd, obfd, NULL, oheader);
(void) bed->elf_backend_copy_special_section_fields (ibfd, obfd,
NULL, oheader);
}
}
@ -2462,12 +2460,12 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
sections. */
if (*p_hdr != NULL)
{
if (bed->init_secondary_reloc_section == NULL
|| ! bed->init_secondary_reloc_section (abfd, hdr, name, shindex))
if (!bed->init_secondary_reloc_section (abfd, hdr, name, shindex))
{
_bfd_error_handler
/* xgettext:c-format */
(_("%pB: warning: secondary relocation section '%s' for section %pA found - ignoring"),
(_("%pB: warning: secondary relocation section '%s' "
"for section %pA found - ignoring"),
abfd, name, target_sect);
}
goto success;
@ -3940,11 +3938,10 @@ assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info)
where s is NULL. */
const struct elf_backend_data *bed
= get_elf_backend_data (abfd);
if (bed->link_order_error_handler)
bed->link_order_error_handler
/* xgettext:c-format */
(_("%pB: warning: sh_link not set for section `%pA'"),
abfd, sec);
bed->link_order_error_handler
/* xgettext:c-format */
(_("%pB: warning: sh_link not set for section `%pA'"),
abfd, sec);
}
}

14
bfd/elfcode.h
View File

@ -987,12 +987,11 @@ elf_write_relocs (bfd *abfd, asection *sec, void *data)
(*swap_out) (abfd, &src_rela, dst_rela);
}
if (bed->write_secondary_relocs != NULL)
if (! bed->write_secondary_relocs (abfd, sec))
{
*failedp = TRUE;
return;
}
if (!bed->write_secondary_relocs (abfd, sec))
{
*failedp = TRUE;
return;
}
}
/* Write out the program headers. */
@ -1596,8 +1595,7 @@ elf_slurp_reloc_table (bfd *abfd,
symbols, dynamic))
return FALSE;
if (bed->slurp_secondary_relocs != NULL
&& ! bed->slurp_secondary_relocs (abfd, asect, symbols))
if (!bed->slurp_secondary_relocs (abfd, asect, symbols))
return FALSE;
asect->relocation = relents;

7
bfd/elfnn-ia64.c
View File

@ -5015,6 +5015,11 @@ elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
break;
}
}
static void
ignore_errors (const char *fmt ATTRIBUTE_UNUSED, ...)
{
}
#define TARGET_LITTLE_SYM ia64_elfNN_le_vec
#define TARGET_LITTLE_NAME "elfNN-ia64-little"
@ -5112,7 +5117,7 @@ elfNN_hpux_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
We don't want to flood users with so many error messages. We turn
off the warning for now. It will be turned on later when the Intel
compiler is fixed. */
#define elf_backend_link_order_error_handler NULL
#define elf_backend_link_order_error_handler ignore_errors
#include "elfNN-target.h"