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2006-09-26  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/3223
	PR ld/3267
	* elf.c (assign_file_positions_for_non_load_sections): Don't
	warn zero size allocated sections.

ld/

2006-09-26  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/3223
	PR ld/3267
	* ld.texinfo: Updated Output Section Discarding.

	* ldlang.h (lang_output_section_statement_type): Add
	section_relative_symbol.
	* 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.

ld/testsuite/

2006-09-26  H.J. Lu  <hongjiu.lu@intel.com>

	PR ld/3223
	PR ld/3267
	* ld-scripts/empty-address-1.d: New file.
	* ld-scripts/empty-address-1.s: Likewise.
	* ld-scripts/empty-address-1.t: Likewise.
	* ld-scripts/empty-address-2.s: Likewise.
	* ld-scripts/empty-address-2a.d: Likewise.
	* ld-scripts/empty-address-2a.t: Likewise.
	* ld-scripts/empty-address-2b.d: Likewise.
	* ld-scripts/empty-address-2b.t: Likewise.
	* ld-scripts/empty-address-3.s: Likewise.
	* ld-scripts/empty-address-3a.d: Likewise.
	* ld-scripts/empty-address-3a.t: Likewise.
	* ld-scripts/empty-address-3b.d: Likewise.
	* ld-scripts/empty-address-3b.t: Likewise.
	* ld-scripts/empty-address-3c.d: Likewise.
	* ld-scripts/empty-address-3c.t: Likewise.
	* ld-scripts/empty-address.exp: Likewise.
This commit is contained in:
H.J. Lu 2006-09-27 04:18:16 +00:00
parent f36b9bcd93
commit 49c13adb16
23 changed files with 215 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
bfd/ChangeLog
View file

@ -1,3 +1,10 @@
2006-09-26 H.J. Lu <hongjiu.lu@intel.com>
PR ld/3223
PR ld/3267
* elf.c (assign_file_positions_for_non_load_sections): Don't
warn zero size allocated sections.
2006-09-27 Alan Modra <amodra@bigpond.net.au>
* elf32-score.c (_bfd_score_elf_relocate_section): Move assignment

13
bfd/elf.c
View file

@ -4662,12 +4662,13 @@ assign_file_positions_for_non_load_sections (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);

13
ld/ChangeLog
View file

@ -1,3 +1,16 @@
2006-09-26 H.J. Lu <hongjiu.lu@intel.com>
PR ld/3223
PR ld/3267
* ld.texinfo: Updated Output Section Discarding.
* ldlang.h (lang_output_section_statement_type): Add
section_relative_symbol.
* 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.
2006-09-25 Bob Wilson <bob.wilson@acm.org>
* ld.texinfo (Options): Update description of local symbols for -X.

4
ld/ld.texinfo
View file

@ -3688,7 +3688,7 @@ The linker will not create output section which do not have any
contents. This is for convenience when referring to input sections that
may or may not be present in any of the input files. For example:
@smallexample
.foo @{ *(.foo) @}
.foo : @{ *(.foo) @}
@end smallexample
@noindent
will only create a @samp{.foo} section in the output file if there is a
@ -3697,6 +3697,8 @@ will only create a @samp{.foo} section in the output file if there is a
If you use anything other than an input section description as an output
section command, such as a symbol assignment, then the output section
will always be created, even if there are no matching input sections.
When a section is discarded, its address (@xref{Output Section Address})
will also be ignored.
@cindex /DISCARD/
The special output section name @samp{/DISCARD/} may be used to discard

11
ld/ldlang.c
View file

@ -3342,6 +3342,7 @@ 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));
@ -4629,11 +4630,19 @@ 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
ld/ldlang.h
View file

@ -153,7 +153,10 @@ typedef struct lang_output_section_statement_struct
unsigned int processed_vma : 1;
unsigned int processed_lma : 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

21
ld/testsuite/ChangeLog
View file

@ -1,3 +1,24 @@
2006-09-26 H.J. Lu <hongjiu.lu@intel.com>
PR ld/3223
PR ld/3267
* ld-scripts/empty-address-1.d: New file.
* ld-scripts/empty-address-1.s: Likewise.
* ld-scripts/empty-address-1.t: Likewise.
* ld-scripts/empty-address-2.s: Likewise.
* ld-scripts/empty-address-2a.d: Likewise.
* ld-scripts/empty-address-2a.t: Likewise.
* ld-scripts/empty-address-2b.d: Likewise.
* ld-scripts/empty-address-2b.t: Likewise.
* ld-scripts/empty-address-3.s: Likewise.
* ld-scripts/empty-address-3a.d: Likewise.
* ld-scripts/empty-address-3a.t: Likewise.
* ld-scripts/empty-address-3b.d: Likewise.
* ld-scripts/empty-address-3b.t: Likewise.
* ld-scripts/empty-address-3c.d: Likewise.
* ld-scripts/empty-address-3c.t: Likewise.
* ld-scripts/empty-address.exp: Likewise.
2006-09-21 Andreas Schwab <schwab@suse.de>
* ld-m68k/plt1-68020.d: Fix patterns to match also for 64-bit

8
ld/testsuite/ld-scripts/empty-address-1.d Normal file
View file

@ -0,0 +1,8 @@
#ld: -T empty-address-1.t
#nm: -n
#...
0+0 T _start
#...
0+2000000 A __data_end
0+2000000 D __data_start
#pass

5
ld/testsuite/ld-scripts/empty-address-1.s Normal file
View file

@ -0,0 +1,5 @@
.text
.global _start
_start:
.long __data_start
.long __data_end

11
ld/testsuite/ld-scripts/empty-address-1.t Normal file
View file

@ -0,0 +1,11 @@
SECTIONS
{
.text 0x0000000: { *(.text) }
.data 0x2000000:
{
__data_start = . ;
*(.data)
}
__data_end = .;
/DISCARD/ : { *(.*) }
}

5
ld/testsuite/ld-scripts/empty-address-2.s Normal file
View file

@ -0,0 +1,5 @@
.text
.global _start
_start:
.long __data_end
.p2align 4

8
ld/testsuite/ld-scripts/empty-address-2a.d Normal file
View file

@ -0,0 +1,8 @@
#source: empty-address-2.s
#ld: -Ttext 0x0000000 -Tdata 0x2000000 -T empty-address-2a.t
#nm: -n
#...
0+0 T _start
#...
0+10 A __data_end
#pass

7
ld/testsuite/ld-scripts/empty-address-2a.t Normal file
View file

@ -0,0 +1,7 @@
SECTIONS
{
.text : { *(.text) }
.data : { *(.data) }
__data_end = .;
/DISCARD/ : { *(.*) }
}

8
ld/testsuite/ld-scripts/empty-address-2b.d Normal file
View file

@ -0,0 +1,8 @@
#source: empty-address-2.s
#ld: -Ttext 0x0000000 -Tdata 0x2000000 -T empty-address-2b.t
#nm: -n
#...
0+0 T _start
#...
0+10 A __data_end
#pass

11
ld/testsuite/ld-scripts/empty-address-2b.t Normal file
View file

@ -0,0 +1,11 @@
SECTIONS
{
.text 0x0000000: { *(.text) }
.data :
{
PROVIDE (__data_start = .);
*(.data)
}
__data_end = .;
/DISCARD/ : { *(.*) }
}

5
ld/testsuite/ld-scripts/empty-address-3.s Normal file
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@ -0,0 +1,5 @@
.text
.global _start
_start:
.byte 0,0,0,0,0,0,0,0
.byte 0,0,0,0,0,0,0,0

8
ld/testsuite/ld-scripts/empty-address-3a.d Normal file
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@ -0,0 +1,8 @@
#source: empty-address-3.s
#ld: -T empty-address-3a.t
#nm: -n
#...
0+0 T _start
#...
0+10 A __data_end
#pass

10
ld/testsuite/ld-scripts/empty-address-3a.t Normal file
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@ -0,0 +1,10 @@
SECTIONS
{
.text 0x00000000: { *(.text) }
.data ALIGN(0x1000) + (. & (0x1000 - 1)):
{
*(.data)
}
__data_end = .;
/DISCARD/ : { *(.*) }
}

8
ld/testsuite/ld-scripts/empty-address-3b.d Normal file
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@ -0,0 +1,8 @@
#source: empty-address-3.s
#ld: -T empty-address-3b.t
#nm: -n
#...
0+0 T _start
#...
0+10 A __data_end
#pass

11
ld/testsuite/ld-scripts/empty-address-3b.t Normal file
View file

@ -0,0 +1,11 @@
SECTIONS
{
.text 0x00000000: { *(.text) }
.data ALIGN(0x1000) + (. & (0x1000 - 1)):
{
PROVIDE (__data_start = .);
*(.data)
}
__data_end = .;
/DISCARD/ : { *(.*) }
}

10
ld/testsuite/ld-scripts/empty-address-3c.d Normal file
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@ -0,0 +1,10 @@
#source: empty-address-3.s
#ld: -T empty-address-3c.t
#nm: -n
#...
0+0 T _start
#...
0+1010 A __data_end
#...
0+1010 D __data_start
#pass

11
ld/testsuite/ld-scripts/empty-address-3c.t Normal file
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@ -0,0 +1,11 @@
SECTIONS
{
.text 0x00000000: { *(.text) }
.data ALIGN(0x1000) + (. & (0x1000 - 1)):
{
__data_start = .;
*(.data)
}
__data_end = .;
/DISCARD/ : { *(.*) }
}

25
ld/testsuite/ld-scripts/empty-address.exp Normal file
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@ -0,0 +1,25 @@
# Make sure that "dot" is updated for empty sections if their addresses
# are set.
# Copyright 2006
# Free Software Foundation, Inc.
#
# This file 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
run_dump_test empty-address-1
run_dump_test empty-address-2a
run_dump_test empty-address-2b
run_dump_test empty-address-3a
run_dump_test empty-address-3b
run_dump_test empty-address-3c