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Apply commit f6c8fecc6fe3d5532691867a7f27820bb1c426a9 from upstream

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(still under GPLv2 at that time):

Author: H.J. Lu <hjl@lucon.org>
Date:   Wed Sep 27 04:18:16 2006 +0000

PR ld/3223
PR ld/3267
* bfd/elf.c (assign_file_positions_for_non_load_sections): Don't warn
  zero size allocated sections.
* ld/ldlang.h (lang_output_section_statement_type): Add
  section_relative_symbol.
* ld/ldlang.c (strip_excluded_output_sections): Don't strip a section
  with a symbol relative to it.
  (lang_size_sections_1): Mark if an output section has a symbol symbol
  relative to it.

This prevents warnings like the following during stripping of debug info
from kernel modules on i386:

===> zlib (all)
...
objcopy --only-keep-debug zlib.ko.debug zlib.ko.symbols
objcopy --strip-debug --add-gnu-debuglink=zlib.ko.symbols zlib.ko.debug zlib.ko
BFD: zlib.ko: warning: allocated section `.plt' not in segment
BFD: zlib.ko: warning: allocated section `.got' not in segment
This commit is contained in:
dim 2010-10-25 19:43:22 +00:00
parent 6582686305
commit b985ffce13
3 changed files with 20 additions and 7 deletions
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13
contrib/binutils/bfd/elf.c
View File

@ -4787,12 +4787,13 @@ assign_file_positions_except_relocs (bfd *abfd,
hdr->sh_offset = hdr->bfd_section->filepos;
else if ((hdr->sh_flags & SHF_ALLOC) != 0)
{
((*_bfd_error_handler)
(_("%B: warning: allocated section `%s' not in segment"),
abfd,
(hdr->bfd_section == NULL
? "*unknown*"
: hdr->bfd_section->name)));
if (hdr->sh_size != 0)
((*_bfd_error_handler)
(_("%B: warning: allocated section `%s' not in segment"),
abfd,
(hdr->bfd_section == NULL
? "*unknown*"
: hdr->bfd_section->name)));
if ((abfd->flags & D_PAGED) != 0)
off += vma_page_aligned_bias (hdr->sh_addr, off,
bed->maxpagesize);

11
contrib/binutils/ld/ldlang.c
View File

@ -3244,6 +3244,7 @@ strip_excluded_output_sections (void)
continue;
exclude = (output_section->rawsize == 0
&& !os->section_relative_symbol
&& (output_section->flags & SEC_KEEP) == 0
&& !bfd_section_removed_from_list (output_bfd,
output_section));
@ -4442,11 +4443,19 @@ lang_size_sections_1
case lang_assignment_statement_enum:
{
bfd_vma newdot = dot;
etree_type *tree = s->assignment_statement.exp;
exp_fold_tree (s->assignment_statement.exp,
exp_fold_tree (tree,
output_section_statement->bfd_section,
&newdot);
/* This symbol is relative to this section. */
if ((tree->type.node_class == etree_provided
|| tree->type.node_class == etree_assign)
&& (tree->assign.dst [0] != '.'
|| tree->assign.dst [1] != '\0'))
output_section_statement->section_relative_symbol = 1;
if (!output_section_statement->ignored)
{
if (output_section_statement == abs_output_section)

3
contrib/binutils/ld/ldlang.h
View File

@ -155,7 +155,10 @@ typedef struct lang_output_section_statement_struct
enum section_type sectype;
unsigned int processed : 1;
unsigned int all_input_readonly : 1;
/* If this section should be ignored. */
unsigned int ignored : 1;
/* If there is a symbol relative to this section. */
unsigned int section_relative_symbol : 1;
} lang_output_section_statement_type;
typedef struct