riscv
/
binutils-gdb
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

bfd/ 

* elflink.h (elf_link_add_object_symbols): Use !info->executable
	instead of info->shared where appropriate.
	(bfd_elfNN_size_dynamic_sections, elf_link_output_extsym): Likewise.
	* elflink.c (_bfd_elf_create_got_section): Likewise.
	(_bfd_elf_link_create_dynamic_sections): Likewise.
	(_bfd_elf_link_assign_sym_version): Likewise.
	* elf32-i386.c (elf_i386_size_dynamic_sections): Create .interp section
	and DT_DEBUG dynamic tag even for position independent executables.
	* elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise.
	* elf32-s390.c (elf_s390_size_dynamic_sections: Likewise.
	* elf64-ppc.c (ppc64_elf_size_dynamic_sections: Likewise.
	* elf64-s390.c (elf_s390_size_dynamic_sections: Likewise.
	* elf64-x86-64.c (elf64_x86_64_size_dynamic_sections: Likewise.
	* elfxx-ia64.c (elfNN_ia64_size_dynamic_sections: Likewise.
	* elf32-sparc.c (elf32_sparc_size_dynamic_sections: Likewise.
	* elf64-alpha.c (elf64_alpha_size_dynamic_sections: Likewise.
	* elf64-sparc.c (sparc64_elf_size_dynamic_sections: Likewise.
include/
	* bfdlink.h (struct bfd_link_info): Add pie and executable
	bits.
ld/
	* lexsup.c (OPTION_PIE): Define.
	(ld_options): Add -pie and --pic-executable options.
	(parse_args): Handle OPTION_PIE.
	* ldmain.c (main): Initialize link_info.pie and
	link_info.executable.
	* genscripts.sh: Generate PIE scripts.
	* ld.texinfo: Document -pie and --pic-executable options.
	* emultempl/elf32.em (gld${EMULATION_NAME}_after_open):
	(gld${EMULATION_NAME}_place_orphan): Likewise.
	(gld${EMULATION_NAME}_get_script): Include PIE scripts.
	* scripttempl/elf.sc: In PIE scripts set . the same way as in
	shared scripts.
	* emulparams/elf_i386.sh (GENERATE_PIE_SCRIPT): Set to yes.
	* emulparams/elf64_ia64.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf32ppc.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf64ppc.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf_x86_64.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf_s390.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf32_sparc.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf64_sparc.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf64alpha.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf64_s390.sh (GENERATE_PIE_SCRIPT): Likewise.
	* emulparams/elf_i386.sh (GENERATE_PIE_SCRIPT): Likewise.
ezannoni_pie-20030916-branch
Jakub Jelinek 24 years ago
parent
cdaeef2eb5
commit
36af4a4e51
32 changed files with 181 additions and 33 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 21
      bfd/ChangeLog
  2. 4
      bfd/elf32-i386.c
  3. 4
      bfd/elf32-ppc.c
  4. 4
      bfd/elf32-s390.c
  5. 4
      bfd/elf32-sparc.c
  6. 4
      bfd/elf64-alpha.c
  7. 4
      bfd/elf64-ppc.c
  8. 4
      bfd/elf64-s390.c
  9. 4
      bfd/elf64-sparc.c
  10. 4
      bfd/elf64-x86-64.c
  11. 10
      bfd/elflink.c
  12. 11
      bfd/elflink.h
  13. 4
      bfd/elfxx-ia64.c
  14. 6
      include/ChangeLog
  15. 6
      include/bfdlink.h
  16. 27
      ld/ChangeLog
  17. 1
      ld/emulparams/elf32_sparc.sh
  18. 1
      ld/emulparams/elf32ppc.sh
  19. 1
      ld/emulparams/elf64_ia64.sh
  20. 1
      ld/emulparams/elf64_s390.sh
  21. 1
      ld/emulparams/elf64_sparc.sh
  22. 1
      ld/emulparams/elf64alpha.sh
  23. 1
      ld/emulparams/elf64ppc.sh
  24. 1
      ld/emulparams/elf_i386.sh
  25. 1
      ld/emulparams/elf_s390.sh
  26. 1
      ld/emulparams/elf_x86_64.sh
  27. 24
      ld/emultempl/elf32.em
  28. 25
      ld/genscripts.sh
  29. 12
      ld/ld.texinfo
  30. 5
      ld/ldmain.c
  31. 14
      ld/lexsup.c
  32. 3
      ld/scripttempl/elf.sc

21
bfd/ChangeLog
View File

@ -1,3 +1,24 @@
2003-05-30 Ulrich Drepper <drepper@redhat.com>
Jakub Jelinek <jakub@redhat.com>
* elflink.h (elf_link_add_object_symbols): Use !info->executable
instead of info->shared where appropriate.
(bfd_elfNN_size_dynamic_sections, elf_link_output_extsym): Likewise.
* elflink.c (_bfd_elf_create_got_section): Likewise.
(_bfd_elf_link_create_dynamic_sections): Likewise.
(_bfd_elf_link_assign_sym_version): Likewise.
* elf32-i386.c (elf_i386_size_dynamic_sections): Create .interp section
and DT_DEBUG dynamic tag even for position independent executables.
* elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise.
* elf32-s390.c (elf_s390_size_dynamic_sections: Likewise.
* elf64-ppc.c (ppc64_elf_size_dynamic_sections: Likewise.
* elf64-s390.c (elf_s390_size_dynamic_sections: Likewise.
* elf64-x86-64.c (elf64_x86_64_size_dynamic_sections: Likewise.
* elfxx-ia64.c (elfNN_ia64_size_dynamic_sections: Likewise.
* elf32-sparc.c (elf32_sparc_size_dynamic_sections: Likewise.
* elf64-alpha.c (elf64_alpha_size_dynamic_sections: Likewise.
* elf64-sparc.c (sparc64_elf_size_dynamic_sections: Likewise.
2003-05-30 Kris Warkentin <kewarken@qnx.com>
* elf.c (elfcore_grok_nto_status): Only set lwpid for the active or

4
bfd/elf32-i386.c
View File

@ -1797,7 +1797,7 @@ elf_i386_size_dynamic_sections (output_bfd, info)
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
@ -1963,7 +1963,7 @@ elf_i386_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (! info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf32-ppc.c
View File

@ -2920,7 +2920,7 @@ ppc_elf_size_dynamic_sections (output_bfd, info)
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
BFD_ASSERT (s != NULL);
@ -3102,7 +3102,7 @@ ppc_elf_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (!info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf32-s390.c
View File

@ -1927,7 +1927,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
@ -2085,7 +2085,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (! info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf32-sparc.c
View File

@ -1820,7 +1820,7 @@ elf32_sparc_size_dynamic_sections (output_bfd, info)
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
@ -1997,7 +1997,7 @@ elf32_sparc_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (!info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf64-alpha.c
View File

@ -4090,7 +4090,7 @@ elf64_alpha_size_dynamic_sections (output_bfd, info)
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (!info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
@ -4176,7 +4176,7 @@ elf64_alpha_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (!info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf64-ppc.c
View File

@ -5737,7 +5737,7 @@ ppc64_elf_size_dynamic_sections (output_bfd, info)
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
@ -5936,7 +5936,7 @@ ppc64_elf_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (!info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf64-s390.c
View File

@ -1898,7 +1898,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
@ -2056,7 +2056,7 @@ elf_s390_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (! info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf64-sparc.c
View File

@ -1781,7 +1781,7 @@ sparc64_elf_size_dynamic_sections (output_bfd, info)
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
@ -1880,7 +1880,7 @@ sparc64_elf_size_dynamic_sections (output_bfd, info)
struct elf_strtab_hash *dynstr;
struct elf_link_hash_table *eht = elf_hash_table (info);
if (!info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

4
bfd/elf64-x86-64.c
View File

@ -1618,7 +1618,7 @@ elf64_x86_64_size_dynamic_sections (output_bfd, info)
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
if (! info->shared)
if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
@ -1779,7 +1779,7 @@ elf64_x86_64_size_dynamic_sections (output_bfd, info)
#define add_dynamic_entry(TAG, VAL) \
bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (! info->shared)
if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;

10
bfd/elflink.c
View File

@ -94,7 +94,7 @@ _bfd_elf_create_got_section (abfd, info)
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
if (info->shared
if (! info->executable
&& ! _bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
@ -144,7 +144,7 @@ _bfd_elf_link_create_dynamic_sections (abfd, info)
/* A dynamically linked executable has a .interp section, but a
shared library does not. */
if (! info->shared)
if (info->executable)
{
s = bfd_make_section (abfd, ".interp");
if (s == NULL
@ -227,7 +227,7 @@ _bfd_elf_link_create_dynamic_sections (abfd, info)
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
if (info->shared
if (! info->executable
&& ! _bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
@ -295,7 +295,7 @@ _bfd_elf_create_dynamic_sections (abfd, info)
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
h->type = STT_OBJECT;
if (info->shared
if (! info->executable
&& ! _bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
@ -1760,7 +1760,7 @@ _bfd_elf_link_assign_sym_version (h, data)
/* If we are building an application, we need to create a
version node for this version. */
if (t == NULL && ! info->shared)
if (t == NULL && info->executable)
{
struct bfd_elf_version_tree **pp;
int version_index;

11
bfd/elflink.h
View File

@ -474,7 +474,7 @@ elf_link_add_object_symbols (abfd, info)
.gnu.warning.SYMBOL are treated as warning symbols for the given
symbol. This differs from .gnu.warning sections, which generate
warnings when they are included in an output file. */
if (! info->shared)
if (info->executable)
{
asection *s;
@ -1321,7 +1321,7 @@ elf_link_add_object_symbols (abfd, info)
}
else
new_flag = ELF_LINK_HASH_DEF_REGULAR;
if (info->shared
if (! info->executable
|| (old_flags & (ELF_LINK_HASH_DEF_DYNAMIC
| ELF_LINK_HASH_REF_DYNAMIC)) != 0)
dynsym = TRUE;
@ -2174,7 +2174,7 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
if (bfd_get_section_by_name (output_bfd, ".preinit_array") != NULL)
{
/* DT_PREINIT_ARRAY is not allowed in shared library. */
if (info->shared)
if (! info->executable)
{
bfd *sub;
asection *o;
@ -2440,7 +2440,7 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
if (info->flags_1)
{
if (! info->shared)
if (info->executable)
info->flags_1 &= ~ (DF_1_INITFIRST
| DF_1_NODELETE
| DF_1_NOOPEN);
@ -4417,7 +4417,8 @@ elf_link_output_extsym (h, data)
referenced by regular files, because we will already have issued
warnings for them. */
if (! finfo->info->relocateable
&& (! finfo->info->shared || ! finfo->info->allow_shlib_undefined)
&& (finfo->info->executable
|| ! finfo->info->allow_shlib_undefined)
&& h->root.type == bfd_link_hash_undefined
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0

4
bfd/elfxx-ia64.c
View File

@ -2903,7 +2903,7 @@ elfNN_ia64_size_dynamic_sections (output_bfd, info)
/* Set the contents of the .interp section to the interpreter. */
if (ia64_info->root.dynamic_sections_created
&& !info->shared)
&& info->executable)
{
sec = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (sec != NULL);
@ -3078,7 +3078,7 @@ elfNN_ia64_size_dynamic_sections (output_bfd, info)
later (in finish_dynamic_sections) but we must add the entries now
so that we get the correct size for the .dynamic section. */
if (!info->shared)
if (info->executable)
{
/* The DT_DEBUG entry is filled in by the dynamic linker and used
by the debugger. */

6
include/ChangeLog
View File

@ -1,3 +1,9 @@
2003-05-30 Ulrich Drepper <drepper@redhat.com>
Jakub Jelinek <jakub@redhat.com>
* bfdlink.h (struct bfd_link_info): Add pie and executable
bits.
2003-05-21 Nick Clifton <nickc@redhat.com>
* bfdlink.h (struct bfd_link_hash_table): Fix typo in comment.

6
include/bfdlink.h
View File

@ -291,6 +291,12 @@ struct bfd_link_info
/* TRUE if relaxation is being finalized. */
unsigned int relax_finalizing: 1;
/* TRUE if generating a position independent executable. */
unsigned int pie: 1;
/* TRUE if generating an executable, position independent or not. */
unsigned int executable : 1;
/* Which symbols to strip. */
enum bfd_link_strip strip;

27
ld/ChangeLog
View File

@ -1,3 +1,30 @@
2003-05-30 Ulrich Drepper <drepper@redhat.com>
Jakub Jelinek <jakub@redhat.com>
* lexsup.c (OPTION_PIE): Define.
(ld_options): Add -pie and --pic-executable options.
(parse_args): Handle OPTION_PIE.
* ldmain.c (main): Initialize link_info.pie and
link_info.executable.
* genscripts.sh: Generate PIE scripts.
* ld.texinfo: Document -pie and --pic-executable options.
* emultempl/elf32.em (gld${EMULATION_NAME}_after_open):
(gld${EMULATION_NAME}_place_orphan): Likewise.
(gld${EMULATION_NAME}_get_script): Include PIE scripts.
* scripttempl/elf.sc: In PIE scripts set . the same way as in
shared scripts.
* emulparams/elf_i386.sh (GENERATE_PIE_SCRIPT): Set to yes.
* emulparams/elf64_ia64.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf32ppc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64ppc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf_x86_64.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf_s390.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf32_sparc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64_sparc.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64alpha.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf64_s390.sh (GENERATE_PIE_SCRIPT): Likewise.
* emulparams/elf_i386.sh (GENERATE_PIE_SCRIPT): Likewise.
2003-05-30 H.J. Lu <hongjiu.lu@intel.com>
* genscripts.sh: Create tmpdir/libpath.exp.

1
ld/emulparams/elf32_sparc.sh
View File

@ -10,4 +10,5 @@ MACHINE=
TEMPLATE_NAME=elf32
DATA_PLT=
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
NO_SMALL_DATA=yes

1
ld/emulparams/elf32ppc.sh
View File

@ -4,6 +4,7 @@
TEMPLATE_NAME=elf32
EXTRA_EM_FILE=ppc32elf
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
SCRIPT_NAME=elf
OUTPUT_FORMAT="elf32-powerpc"
TEXT_START_ADDR=0x01800000

1
ld/emulparams/elf64_ia64.sh
View File

@ -16,6 +16,7 @@ fi
TEXT_START_ADDR="0x4000000000000000"
DATA_ADDR="0x6000000000000000 + (. & (${MAXPAGESIZE} - 1))"
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
NOP=0x00300000010070000002000001000400 # a bundle full of nops
OTHER_GOT_SECTIONS="
.IA_64.pltoff ${RELOCATING-0} : { *(.IA_64.pltoff) }"

1
ld/emulparams/elf64_s390.sh
View File

@ -9,6 +9,7 @@ MACHINE=
NOP=0x07070707
TEMPLATE_NAME=elf32
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
# Treat a host that matches the target with the possible exception of "x"
# in the name as if it were native.

1
ld/emulparams/elf64_sparc.sh
View File

@ -8,6 +8,7 @@ ARCH="sparc:v9"
MACHINE=
DATA_PLT=
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
NOP=0x01000000
NO_SMALL_DATA=yes

1
ld/emulparams/elf64alpha.sh
View File

@ -11,6 +11,7 @@ NONPAGED_TEXT_START_ADDR="0x120000000"
ARCH=alpha
MACHINE=
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
DATA_PLT=
# Note that the number is always big-endian, thus we have to
# reverse the digit string.

1
ld/emulparams/elf64ppc.sh
View File

@ -2,6 +2,7 @@ TEMPLATE_NAME=elf32
EXTRA_EM_FILE=ppc64elf
ELFSIZE=64
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
SCRIPT_NAME=elf
OUTPUT_FORMAT="elf64-powerpc"
TEXT_START_ADDR=0x10000000

1
ld/emulparams/elf_i386.sh
View File

@ -9,4 +9,5 @@ MACHINE=
NOP=0x90909090
TEMPLATE_NAME=elf32
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
NO_SMALL_DATA=yes

1
ld/emulparams/elf_s390.sh
View File

@ -8,3 +8,4 @@ MACHINE=
NOP=0x07070707
TEMPLATE_NAME=elf32
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes

1
ld/emulparams/elf_x86_64.sh
View File

@ -10,6 +10,7 @@ MACHINE=
NOP=0x90909090
TEMPLATE_NAME=elf32
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
NO_SMALL_DATA=yes
if [ "x${host}" = "x${target}" ]; then

24
ld/emultempl/elf32.em
View File

@ -643,7 +643,7 @@ gld${EMULATION_NAME}_after_open ()
struct bfd_link_needed_list *needed, *l;
/* We only need to worry about this when doing a final link. */
if (link_info.relocateable || link_info.shared)
if (link_info.relocateable || !link_info.executable)
return;
/* Get the list of files which appear in DT_NEEDED entries in
@ -1180,7 +1180,7 @@ gld${EMULATION_NAME}_place_orphan (file, s)
/* If this is a final link, then always put .gnu.warning.SYMBOL
sections into the .text section to get them out of the way. */
if (! link_info.shared
if (link_info.executable
&& ! link_info.relocateable
&& strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
&& hold_text.os != NULL)
@ -1474,6 +1474,14 @@ if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ;
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
fi
if test -n "$GENERATE_PIE_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
fi
echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
fi
if test -n "$GENERATE_SHLIB_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
@ -1511,6 +1519,18 @@ cat >>e${EMULATION_NAME}.c <<EOF
return "ldscripts/${EMULATION_NAME}.xn";
EOF
fi
if test -n "$GENERATE_PIE_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
cat >>e${EMULATION_NAME}.c <<EOF
else if (link_info.pie && link_info.combreloc)
return "ldscripts/${EMULATION_NAME}.xdc";
EOF
fi
cat >>e${EMULATION_NAME}.c <<EOF
else if (link_info.pie)
return "ldscripts/${EMULATION_NAME}.xd";
EOF
fi
if test -n "$GENERATE_SHLIB_SCRIPT" ; then
if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
cat >>e${EMULATION_NAME}.c <<EOF

25
ld/genscripts.sh
View File

@ -236,6 +236,31 @@ if test -n "$GENERATE_SHLIB_SCRIPT"; then
rm -f ${COMBRELOC}
COMBRELOC=
fi
unset CREATE_SHLIB
fi
if test -n "$GENERATE_PIE_SCRIPT"; then
LD_FLAG=pie
DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
CREATE_PIE=" "
# Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
(
echo "/* Script for ld -pie: link position independent executable */"
. ${srcdir}/emulparams/${EMULATION_NAME}.sh
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd
if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
LD_FLAG=cpie
DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
. ${srcdir}/emulparams/${EMULATION_NAME}.sh
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc
rm -f ${COMBRELOC}
COMBRELOC=
fi
unset CREATE_PIE
fi
case " $EMULATION_LIBPATH " in

12
ld/ld.texinfo
View File

@ -1209,6 +1209,18 @@ command @code{OUTPUT_FORMAT} can also specify the output format, but
this option overrides it. @xref{BFD}.
@end ifclear
@kindex -pie
@kindex --pic-executable
@item -pie
@itemx --pic-executable
@cindex position independent executables
Create a position independent executable. This is currently only supported on
ELF platforms. Position independent executables are similar to shared
libraries in that they are relocated by the dynamic linker to the virtual
address OS chooses for them (which can varry between invocations), like
normal dynamically linked executables they can be executed and symbols
defined in the executable cannot be overridden by shared libraries.
@kindex -qmagic
@item -qmagic
This option is ignored for Linux compatibility.

5
ld/ldmain.c
View File

@ -291,6 +291,8 @@ main (argc, argv)
link_info.emitrelocations = FALSE;
link_info.task_link = FALSE;
link_info.shared = FALSE;
link_info.pie = FALSE;
link_info.executable = FALSE;
link_info.symbolic = FALSE;
link_info.export_dynamic = FALSE;
link_info.static_link = FALSE;
@ -368,6 +370,9 @@ main (argc, argv)
einfo (_("%P%F: -f may not be used without -shared\n"));
}
if (! link_info.shared || link_info.pie)
link_info.executable = TRUE;
/* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
don't see how else this can be handled, since in this case we
must preserve all externally visible symbols. */

14
ld/lexsup.c
View File

@ -138,6 +138,7 @@ int parsing_defsym = 0;
#define OPTION_NO_STRIP_DISCARDED (OPTION_STRIP_DISCARDED + 1)
#define OPTION_ACCEPT_UNKNOWN_INPUT_ARCH (OPTION_NO_STRIP_DISCARDED + 1)
#define OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH (OPTION_ACCEPT_UNKNOWN_INPUT_ARCH + 1)
#define OPTION_PIE (OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH + 1)
/* The long options. This structure is used for both the option
parsing and the help text. */
@ -370,6 +371,10 @@ static const struct ld_option ld_options[] =
'\0', NULL, N_("Create a shared library"), ONE_DASH },
{ {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
'\0', NULL, NULL, ONE_DASH },
{ {"pie", no_argument, NULL, OPTION_PIE},
'\0', NULL, N_("Create a position independent executable"), ONE_DASH },
{ {"pic-executable", no_argument, NULL, OPTION_PIE},
'\0', NULL, NULL, TWO_DASHES },
{ {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
'\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
{ {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
@ -959,6 +964,15 @@ parse_args (argc, argv)
else
einfo (_("%P%F: -shared not supported\n"));
break;
case OPTION_PIE:
if (config.has_shared)
{
link_info.shared = TRUE;
link_info.pie = TRUE;
}
else
einfo (_("%P%F: -pie not supported\n"));
break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
command_line.soname = optarg;

3
ld/scripttempl/elf.sc
View File

@ -180,8 +180,9 @@ ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
SECTIONS
{
/* Read-only sections, merged into text segment: */
${CREATE_SHLIB-${RELOCATING+. = ${TEXT_BASE_ADDRESS};}}
${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${TEXT_BASE_ADDRESS};}}}
${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}
${CREATE_SHLIB-${INTERP}}
${INITIAL_READONLY_SECTIONS}
${TEXT_DYNAMIC+${DYNAMIC}}

Write Preview
Loading…
Cancel
Save