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Author SHA1 Message Date
Jiong Wang
70151fb54a [AArch64][7/8] GAS support BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 
2015-08-11  Jiong Wang  <jiong.wang@arm.com>

include/elf/
  * aarch64.h (R_AARCH64_P32_TLSLD_ADD_DTPREL_LO12): Define.

bfd/
  * reloc.c (BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12): New entry.
  * bfd-in2.h: Regenerate.
  * libbfd.h: Regenerate.
  * elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
  BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12.

gas/
  * config/tc-aarch64.c (reloc_table): New relocation modifiers
  "dtprel_lo12".
  (md_apply_fix): Support BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12.
  (aarch64_force_relocation): Likewise.

gas/testsuite/
  * gas/aarch64/reloc-dtprel_lo12-1.s: New testcase.
  * gas/aarch64/reloc-dtprel_lo12-ilp32-1.s: Likewise.
  * gas/aarch64/reloc-dtprel_lo12-1.d: New expectation file.
  * gas/aarch64/reloc-dtprel_lo12-ilp32-1.d: Likewise.
 2015-08-11 21:26:31 +01:00
Jiong Wang
73f925cc20 [AArch64][6/8] LD support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC 
2015-08-11  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * elfnn-aarch64.c (IS_AARCH64_TLS_RELOC): Recognize
  BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC.
  (aarch64_reloc_got_type): Likewise.
  (elfNN_aarch64_final_link_relocate): Likewise.
  (elfNN_aarch64_relocate_section): Likewise.
  (elfNN_aarch64_gc_sweep_hook): Likewise.
  (elfNN_aarch64_check_relocs): Likewise.
  * elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Likewise.
  (_bfd_aarch64_elf_resolve_relocation): Likewise.

ld/testsuite/
  * ld-aarch64/tls-small-ld.s: Update testcase.
 2015-08-11 21:26:13 +01:00
Jiong Wang
a12fad50d2 [AArch64][5/8] GAS support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC 
2015-08-11  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * reloc.c (BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC): New entry.
  * bfd-in2.h: Regenerate.
  * libbfd.h: Regenerate.
  * elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
  BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC.

gas/
  * config/tc-aarch64.c (reloc_table): New relocation modifiers.
  (md_apply_fix): Support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC.
  (aarch64_force_relocation): Likewise.

gas/testsuite/
  * gas/aarch64/reloc-tlsldm_lo12_nc-1.s: New testcase.
  * gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.s: Likewise.
  * gas/aarch64/reloc-tlsldm_lo12_nc-1.d: New expectation file.
  * gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.d: Likewise.
 2015-08-11 21:25:51 +01:00
Jiong Wang
f69e49203b [AArch64][3/8] LD support BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 
2015-08-11  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * elfnn-aarch64.c (IS_AARCH64_TLS_RELOC): Recognize
  BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21.
  (aarch64_reloc_got_type): Likewise.
  (elfNN_aarch64_final_link_relocate): Likewise.
  (elfNN_aarch64_relocate_section): Likewise.
  (elfNN_aarch64_gc_sweep_hook): Likewise.
  (elfNN_aarch64_check_relocs): Likewise.
  * elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Likewise.
  (_bfd_aarch64_elf_resolve_relocation): Likewise.

ld/testsuite/
  * ld-aarch64/tls-small-ld.s: New file.
  * ld-aarch64/tls-small-ld.d: Likewise.
  * ld-aarch64/aarch64-elf.exp: Run new test.
 2015-08-11 21:25:04 +01:00
Jiong Wang
1107e076cf [AArch64][2/8] GAS support BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 
2015-08-11  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * reloc.c (BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21): New entry.
  * bfd-in2.h: Regenerate.
  * libbfd.h: Regenerate.
  * elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
  BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21.

gas/
  * config/tc-aarch64.c (reloc_table): New relocation modifiers.
  (md_apply_fix): Support BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21.
  (aarch64_force_relocation): Likewise.

gas/testsuite/
  * gas/aarch64/reloc-tlsldm-page-1.s: New testcase.
  * gas/aarch64/reloc-tlsldm-page-ilp32-1.s: Likewise.
  * gas/aarch64/reloc-tlsldm-page-1.d: New expectation file.
  * gas/aarch64/reloc-tlsldm-page-ilp32-1.d: Likewise.
 2015-08-11 21:24:38 +01:00
Szabolcs Nagy
32f573bcb3 [AArch64] Fix extern protected data handling 
Emit *GLOB_DAT instead of *RELATIVE relocs for protected data
in shared objects.

This is needed for the fix of glibc bug 17711:
https://sourceware.org/bugzilla/show_bug.cgi?id=17711

bfd:
	PR ld/18705
	* elfnn-aarch64.c (elf_backend_extern_protected_data): Define.

ld/testsuite:
	PR ld/18705
	* ld-aarch64/protected-data.d: New.
	* ld-aarch64/protected-data.s: New.
	* ld-aarch64/aarch64-elf.exp: Add new test.
 2015-07-27 11:48:48 +01:00
Jiong Wang
4c0a9a6fa1 [AArch64] Sort TLS reloc types alphabetically 2015-07-17 13:03:26 +01:00
Jiong Wang
77a69ff840 [AArch64][3/3] LD support BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 2015-07-16 15:46:21 +01:00
Jiong Wang
6c37fedc41 [AArch64][2/3] GAS support BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 2015-07-16 15:43:21 +01:00
Jiong Wang
c217058957 [AArch64] Generate DT_TEXTREL for relocation against read-only section 
2015-06-23  Jiong Wang  <jiong.wang@arm.com>

  bfd/
    * elfnn-aarch64.c (aarch64_readonly_dynrelocs): New function.
    (elfNN_aarch64_size_dynamic_sections): Traverse hash table to check
    relocations against read-only sections.

  ld/testsuite/
    * ld-aarch64/dt_textrel.s: New testcase.
    * ld-aarch64/dt_textrel.d: New expectation file.
    * ld-aarch64/aarch64-elf.exp: Run new testcase.
 2015-06-23 12:12:06 +01:00
Renlin Li
87f5fbcc7a [AArch64] Gas add BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 support 
2015-06-15  Renlin Li <renlin.li@arm.com>
bfd/
    * reloc.c (BFD_RELOC_AARCH64_LD64_GOTOFF_LO15): New entry.
    * elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
    BFD_RELOC_AARCH64_LD64_GOTOFF_LO15.
    * bfd-in2.h: Regenerate.
    * libbfd.h: Regenerate.

gas/
    * config/tc-aarch64.c (reloc_table): New relocation modifier.
    (md_apply_fix): Support BFD_RELOC_AARCH64_LD64_GOTOFF_LO15.
    (aarch64_force_relocation): Ditto

gas/testsuite/
    * gas/aarch64/reloc-insn.s: Update test
    * gas/aarch64/reloc-insn.d: Update expected result.
 2015-06-15 11:07:37 +01:00
Jiong Wang
7018c0308a [AArch64] BFD support BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 
This patch add BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 relocation
supoprt in bfd linker.

2015-06-01  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * elfnn-aarch64.c (aarch64_reloc_got_type): Support
  BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14.
  (elfNN_aarch64_final_link_relocate): Ditto.
  (elfNN_aarch64_gc_swap_hook): Ditto.
  (elfNN_aarch64_check_relocs): Ditto.
  * elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Ditto.

ld/testsuite/
  * ld-aarch64/emit-relocs-28.s: New test file.
  * ld-aarch64/emit-relocs-28.d: Ditto.
  * ld-aarch64/aarch64-elf.exp: Run new test.
 2015-06-01 15:45:25 +01:00
Jiong Wang
3d715ce420 [AArch64] GAS support BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 
This patch add BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 support in Gas.

The relocation modifier
===
  :gotpage_lo14:symbol

2015-06-01 Jiong.Wang <jiong.wang@arm.com>

bfd/
  * reloc.c (BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14): New entry.
  * bfd-in2.h: Regenerate.
  * libbfd.h: Regenerate.
  * elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
  BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14.

gas/
  * config/tc-aarch64.c (reloc_table): New relocation modifiers.
  (md_apply_fix): Support BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14.
  (aarch64_force_relocation): Ditto.

gas/testsuite/
  * gas/aarch64/ilp32-basic.s: New testcase.
  * gas/aarch64/ilp32-basic.d: Ditto.
 2015-06-01 15:41:54 +01:00
Jiong Wang
36e6c1400b [AArch64] BFD_RELOC_AARCH64_TLSLE_ADD_LO12 should enable overflow check 
BFD_RELOC_AARCH64_TLSLE_ADD_LO12 is used to generate simplest
one-instruction addressing for TLS LE model when tls size is smaller
4K. Linker need to make sure there is no TLS offset overflow.

2015-06-01  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * elfnn-aarch64.c (elfNN_aarch64_howto_table): Set overflow type to
  complain_overflow_unsigned for BFD_RELOC_AARCH64_TLSLE_ADD_LO12.
  * elfxx-aarch64.c (_bfd_aarch64_elf_resolve_relocation): Don't use
  PGOFF for BFD_RELOC_AARCH64_TLSLE_ADD_LO12, that will mask off all
  potential high overflowed bits.

ld/testsuite/
  * ld-aarch64/tprel_add_lo12_overflow.s: New testcase.
  * ld-aarch64/tprel_add_lo12_overflow.d: Nex expectation file.
  * ld-aarch64/aarch64-elf.exp: Run new testcase.
 2015-06-01 10:31:38 +01:00
Jiong Wang
99ad26cb0d [AArch64] BFD Support BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 
2015-06-01  Jiong Wang  <jiong.wang@arm.com>
bfd/
	* elfnn-aarch64.c (aarch64_reloc_got_type): Support
	BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15.
	(elfNN_aarch64_final_link_relocate): Ditto.
	(elfNN_aarch64_gc_swap_hook): Ditto.
	(elfNN_aarch64_check_relocs): Ditto.
	* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Ditto.

ld/testsuite/
	* ld-aarch64/emit-relocs-313.s: New test file.
	* ld-aarch64/emit-relocs-313.d: Ditto.
	* ld-aarch64/aarch64-elf.exp: Run new test.
 2015-06-01 10:26:00 +01:00
Jiong Wang
a921b5bd70 [AArch64] GAS Support BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15 
2015-06-01 Jiong.Wang <jiong.wang@arm.com>

bfd/
  * reloc.c (BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15): New entry.
  * bfd-in2.h: Regenerate.
  * libbfd.h: Regenerate.
  * elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
  BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15.

gas/
  * config/tc-aarch64.c (reloc_table): New relocation modifiers.
  (md_apply_fix): Support BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15.
  (aarch64_force_relocation): Ditto.

gas/testsuite/
  * gas/aarch64/reloc-insn.s: New testcase.
  * gas/aarch64/reloc-insn.d: Ditto.
 2015-06-01 10:22:15 +01:00
Jiong Wang
ce33678882 [AArch64/BFD] Sort relocation case labels alphabetically 
2015-05-19  Jiong Wang  <jiong.wang@arm.com>

    bfd/
	* elfnn-aarch64.c (aarch64_tls_transition_without_check): Sort
	relocation case labels alphabetically.
	(elfNN_aarch64_final_link_relocate): Ditto.
	(elfNN_aarch64_tls_relax): Ditto.
	(elfNN_aarch64_relocate_section): Ditto.
	(elfNN_aarch64_gc_sweep_hook): Ditto.
	(elfNN_aarch64_check_relocs): Ditto.
	* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Ditto.
	(_bfd_aarch64_elf_resolve_relocation): Ditto.
 2015-05-20 10:58:43 +01:00
Jiong Wang
80de0c6d61 [AArch64] Remove X86-64 comments 
bfd/
  * elfnn-aarch64.c (elfNN_aarch64_adjust_dynamic_symbol): Rewrite comments.
 2015-05-18 10:46:34 +01:00
Jiong Wang
fdc3b1b1ef [AArch64] Remove BFD overflow check restrictions 
bfd/
  * elfnn-aarch64.c (elfNN_aarch64_relocate_section): Remove overflow
  check restriction.
 2015-05-14 12:46:31 +01:00
Jiong Wang
b53b1bedbd [AArch64] PR18270, fix handling of GOT entry for local symbol 
2015-04-24  Jiong. Wang  <jiong.wang@arm.com>

bfd/
  PR ld/18270
  * elfnn-aarch64.c (elfNN_aarch64_size_dynamic): Count local symbol for
  GOT_NORMAL for both sgot/srelgot section.
  (elfNN_aarch64_final_link_relocate): Relocate against GOT entry address
  and generate necessary runtime relocation for GOT entry.
 2015-04-24 23:25:28 +01:00
Jiong Wang
dcbd20eb14 [AArch64] Improve PC-relative relocation check for shared library 
2015-04-24  Jiong. Wang  <jiong.wang@arm.com>

bfd/
  * elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Reject
  PC-relative relocation for external symbol.

ld/testsuite/
  * ld-aarch64/pcrel.s: New testcase.
  * ld-aarch64/pcrel_pic_defiend_local.d: New expect file.
  * ld-aarch64/pcrel_pic_undefined.d: Ditto.
  * ld-aarch64/aarch64-elf.exp: Run them.
 2015-04-24 22:35:04 +01:00
Marcus Shawcroft
4106101c44 [AArch64] Workaround for Cortex A53 erratum 843419 
Some early revisions of the Cortex-A53 have an erratum (843419).  The
details of the erratum are quite complex and involve dynamic
conditions.  For the purposes of the workaround we have simplified the
static conditions to an ADRP in the last two instructions of a 4KByte
page, followed within four instructions by a load/store dependent on
the ADRP.

This patch adds support to conservatively scan for and workaround
Cortex A53 erratum 843419.  There are two different workaround
strategies used.  The first is to rewrite ADRP instructions which form
part of an erratum sequence with an ADR instruction.  In situations
where the ADR provides insufficient offset the dependent load or store
instruction from the sequence is moved to a stub section and branches
are inserted from the original sequence to the relocated instruction
and back again.

Stub section sizes are rounded up to a multiple of 4096 in order to
ensure that the act of inserting work around stubs does not create
more errata sequences.

Workaround stubs are always inserted into the stub section associated
with the input section containing the erratum sequence.  This ensures
that the fully relocated form of the veneered load store instruction
is available at the point in time when the stub section is written.
 2015-04-01 13:16:38 +01:00
Tejas Belagod
93ca856967 [AArch64] Fix branch stubs for BE 
2015-03-26  Tejas Belagod  <tejas.belagod@arm.com>

ld/testsuite
  * ld-aarch64/farcall-back-be.d: New.

bfd/
  * elfnn-aarch64.c (aarch64_build_one_stub): Replace the call to generic
  _bfd_final_link_relocate with aarch64_relocate.
 2015-03-26 16:20:38 +00:00
Marcus Shawcroft
618655192f [AArch64] Implement branch over stub section. 
Ensure that injection of a stub section does not break a link where
there is an xpectation that flow of control can pass from one input
section to another simply by linking the input sections in series.

The solution here is to allow stub sections to be inserted after any
input section (existing behaviour), but inject an additional branch at
the start of each stub section such that control flow falling into the
stub section will branch over the stub section.
 2015-03-25 15:16:04 +00:00
Marcus Shawcroft
357d1523b2 [AArch64] Adjust veneer count. 2015-03-25 14:45:28 +00:00
Marcus Shawcroft
fc6d53be18 [AArch64] Factor out _bfd_aarch64_get_stub_for_link_section. 2015-03-24 14:10:43 +00:00
Marcus Shawcroft
30068a6d2d [AArch64] Refactor section_group[] representation. 
Change the behaviour of section_group[] such that .stub_sec points to
the stub section attached to the indexed section rather than the stub
section attached to the link_section pointed to be the index section.

This provides a mechanism to get to the stub section following any
input section.  While still allowing the section grouping mechanism to
find the section group stub section associated with an input section
by first following the link_sec pointer.
 2015-03-24 14:10:43 +00:00
Marcus Shawcroft
5421cc6e55 [AArch64] Refactor generation of 835769 workaround stubs. 
This patch recognizes that we only need to perform one scan for the
835769 errata and that this scan can take place before we insert
branch stubs.  The erratum scan code is relocated and adjusted to
create stub entries directly rather than populating an intermediate
representation.  Since stub entries are created immediately we can
drop the adhoc stub size adjustment code and allow the generic stub
sizing code to deal with 835769 stub entries.

This patch restructures the code but does not change the workaround
used to deal with erratum 83679, the exact placement of workaround
stubs in the final image may change slightly after this patch due to
stubs being created in a different order.
 2015-03-24 12:03:46 +00:00
Marcus Shawcroft
e572930b96 [AArch64] Use _bfd_aarch64_add_stub_entry_in_group. 
Adjust the 835769 workaround code to use
_bfd_aarch64_add_stub_entry_in_group rather than inspect the
underlying section_group structure directly.
 2015-03-24 12:03:39 +00:00
Keith Seitz
c53ed7cf57 [OBV] Fix build -- missing ';' 
bfd/ChangeLog

	* elfnn-aarch64.c (_bfd_aarch64_create_or_find_stub_sec): Add
	missing ';'.
 2015-03-23 11:47:26 -07:00
Marcus Shawcroft
35fee8b77b Factor out _bfd_aarch64_erratum_835769_stub_name 2015-03-23 16:14:14 +00:00
Marcus Shawcroft
13f622ec59 [AArch64] Factor out _bfd_aarch64_resize_stubs() 2015-03-23 16:14:05 +00:00
Marcus Shawcroft
6658567565 [AArch64] Factor stub creation code into _bfd_aarch64_create_stub_section. 2015-03-23 16:06:55 +00:00
Marcus Shawcroft
ef85752125 [AArch64] Factor out common behaviour between elf_aarch64_create_or_find_stub_sec and elfNN_aarch64_add_stub 2015-03-23 15:52:03 +00:00
Marcus Shawcroft
2144188dcf [AArch64] Flip sense of erratum_835769_scan. 2015-03-23 15:44:08 +00:00
Marcus Shawcroft
4c77202d00 [AArch64] Drop unused argument to elf_aarch64_create_or_find_stub_sec 2015-03-23 15:20:30 +00:00
Marcus Shawcroft
9b9971aac7 [AArch64] Remove unused variable. 2015-03-23 15:20:30 +00:00
Marcus Shawcroft
e2cdef47b7 Remove dead code. 2015-03-23 14:46:04 +00:00
Marcus Shawcroft
3d14faea41 [AArch64] Tidy up in aarch64_mem_op_p(). 2015-03-23 14:45:37 +00:00
Marcus Shawcroft
f872121a87 [AArch64] Adjust layout of elfNN_aarch64_write_section. 2015-03-23 14:35:28 +00:00
Marcus Shawcroft
8e2fe09f70 [AArch64] Call abort() consistently in unhandled stub switch statements. 
Ensure we hard stop via abort() for unhandled stub types rather than
continuing either silently (or noisly with a BFD_FAIL()).

Call abort() giving a hard stop rather than BFD_FAIL () for unhandled
stub types.
 2015-03-04 12:30:32 +00:00
Marcus Shawcroft
1ada945d05 [AArch64] Add support for :tlsdesc: and TLSDESC_LD_PREL19 2015-02-26 22:59:23 +00:00
Marcus Shawcroft
389b8029b6 [AArch64] Add support for :tlsdesc: and TLSDESC_ADR_PREL21 2015-02-26 22:59:16 +00:00
Marcus Shawcroft
3c12b05436 Add ADR :tlsgd: directive and TLSGD_ADR_PREL21 support. 2015-02-26 22:23:09 +00:00
Marcus Shawcroft
043bf05a3d Adding support for TLSIE_LD_GOTTREL_PREL19. 2015-02-26 22:23:09 +00:00
Marcus Shawcroft
7366006f66 Fix field size for TLSDESC_CALL 
This relocation is a marker and does not result in a modification to
the binary.  Changing the HOWTO bit field width to reflect this
property.
 2015-02-26 22:23:08 +00:00
Marcus Shawcroft
07875fbce7 Fix field size for TLSLE_MOVW_TPREL_* relocations. 
The HOWTO table entries for the TLSLE_MOVW_TPREL_* relocations are
wrong by inspection.  The current implementation does not actually use
these field widths for these relocations but they should be corrected.
 2015-02-26 22:23:08 +00:00
Marcus Shawcroft
49d8f92c6e Fix TLSIE_MOVW_GOTTPREL_G0_NC field size. 2015-02-26 22:23:08 +00:00
Will Newton
46b87d4902 bfd/elfnn-aarch64.c: Set st_value to zero for undefined symbols 
Unless pointer_equality_needed is set then set st_value to be zero
for undefined symbols.

bfd/ChangeLog:

2015-02-03  Will Newton  <will.newton@linaro.org>

	* elfnn-aarch64.c (elfNN_aarch64_finish_dynamic_symbol):
	Set st_value to zero for undefined symbols if the reference
	is weak or pointer_equality_needed is FALSE.
 2015-02-03 14:05:06 +00:00
Alan Modra
6346d5ca43 Fallout from recent bfd_reloc_outofrange changes 
Commit ec93045b and cd21f5da introduced a large number of tic4x and
tic54x regressions, due to the new checks being wrong for targets
with octets_per_byte != 1.  To fix that I introduced a new
bfd_get_section_limit_octets and performed the check on octets rather
than byte adresses, reducing the number of bfd_octets_per_byte calls.
bfd_octets_per_byte is rather expensive..

I then wondered why the same bfd_reloc_outofrange check added to
bfd_perform_relocation wasn't also added to bfd_install_relocation.
The two functions are virtually identical and ought to remain that
way.  However, adding the same check to bfd_install_relocation
resulted in ld-elf "FAIL Link eh-group.o to eh-group" on many ELF
targets, including x64_64-linux.  The reason being that eh-group.o
has NONE relocs at the end of a section, and most targets give NONE
relocs a non-zero size.  So if we are to keep the new outofrange
check it appears that NONE relocs must have a zero size.

	* bfd-in.h (bfd_get_section_limit_octets): New define, extracted from..
	(bfd_get_section_limit): ..here.
	* reloc.c (bfd_perform_relocation): Correct bfd_reloc_outofrange check.
	(bfd_install_relocation, _bfd_final_link_relocate): Add same check here.
	* elf32-sh.c (sh_elf_reloc): Correct bfd_reloc_outofrange check.
	* elf32-ppc.c (ppc_elf_addr16_ha_reloc): Remove duplicated
	bfd_reloc_outofrange check.
	* bfd-in2.h: Regenerate.

	* cpu-ns32k.c (_bfd_do_ns32k_reloc_contents): Return bfd_reloc_ok
	on zero size relocs.
	* ecoff.c (ecoff_reloc_link_order): Likewise.
	* elf32-nds32.c (nds32_relocate_contents): Likewise.
	* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Likewise.

	* reloc.c (_bfd_relocate_contents): Don't bomb on zero size relocs.
	(_bfd_clear_contents): Likewise.
	* elfxx-mips.c (mips_elf_obtain_contents): Likewise.
	(mips_elf_perform_relocation): Likewise.

	* aoutx.h (aout_link_reloc_link_order): Allow for NULL return
	from malloc on zero size alloc.
	* cofflink.c (_bfd_coff_reloc_link_order): Likewise.
	* elflink.c (elf_reloc_link_order): Likewise.
	* linker.c (_bfd_generic_reloc_link_order): Likewise.
	* pdp11.c (aout_link_reloc_link_order): Likewise.
	* xcofflink.c (xcoff_reloc_link_order): Likewise.

	* aoutx.h (howto_table_ext): Ensure NONE relocs have size 3,
	bitsize 0, and complain_overflow_dont.
	* coff-sparc.c (coff_sparc_howto_table): Likewise.
	* elf-hppa.h (elf_hppa_howto_table): Likewise.
	* elf-m10200.c (elf_mn10200_howto_table): Likewise.
	* elf-m10300.c (elf_mn10300_howto_table): Likewise.
	* elf32-arc.c (elf_arc_howto_table): Likewise.
	* elf32-arm.c (elf32_arm_howto_table_1): Likewise.
	* elf32-avr.c (elf_avr_howto_table): Likewise.
	* elf32-bfin.c (bfin_howto_table): Likewise.
	* elf32-cr16.c (cr16_elf_howto_table): Likewise.
	* elf32-cris.c (cris_elf_howto_table): Likewise.
	* elf32-crx.c (crx_elf_howto_table): Likewise.
	* elf32-d10v.c (elf_d10v_howto_table): Likewise.
	* elf32-d30v.c (elf_d30v_howto_table): Likewise.
	* elf32-dlx.c (dlx_elf_howto_table): Likewise.
	* elf32-epiphany.c (epiphany_elf_howto_table): Likewise.
	* elf32-fr30.c (fr30_elf_howto_table): Likewise.
	* elf32-frv.c (elf32_frv_howto_table): Likewise.
	* elf32-h8300.c (h8_elf_howto_table): Likewise.
	* elf32-i370.c (i370_elf_howto_raw): Likewise.
	* elf32-i386.c (elf_howto_table): Likewise.
	* elf32-i860.c (elf32_i860_howto_table): Likewise.
	* elf32-i960.c (elf32_i960_relocate): Likewise.
	* elf32-ip2k.c (ip2k_elf_howto_table): Likewise.
	* elf32-iq2000.c (iq2000_elf_howto_table): Likewise.
	* elf32-lm32.c (lm32_elf_howto_table): Likewise.
	* elf32-m32c.c (m32c_elf_howto_table): Likewise.
	* elf32-m32r.c (m32r_elf_howto_table): Likewise.
	* elf32-m68hc11.c (elf_m68hc11_howto_table): Likewise.
	* elf32-m68hc12.c (elf_m68hc11_howto_table): Likewise.
	* elf32-m68k.c (howto_table): Likewise.
	* elf32-mcore.c (mcore_elf_howto_raw): Likewise.
	* elf32-mep.c (mep_elf_howto_table): Likewise.
	* elf32-metag.c (elf_metag_howto_table): Likewise.
	* elf32-microblaze.c (microblaze_elf_howto_raw): Likewise.
	* elf32-mips.c (elf_mips_howto_table_rel): Likewise.
	* elf32-moxie.c (moxie_elf_howto_table): Likewise.
	* elf32-msp430.c (elf_msp430_howto_table): Likewise.
	* elf32-mt.c (mt_elf_howto_table): Likewise.
	* elf32-nds32.c (nds32_elf_howto_table): Likewise.
	* elf32-nios2.c (elf_nios2_howto_table_rel): Likewise.
	* elf32-or1k.c (or1k_elf_howto_table): Likewise.
	* elf32-pj.c (pj_elf_howto_table): Likewise.
	* elf32-ppc.c (ppc_elf_howto_raw): Likewise.
	* elf32-rl78.c (rl78_elf_howto_table): Likewise.
	* elf32-rx.c (rx_elf_howto_table): Likewise.
	* elf32-s390.c (elf_howto_table): Likewise.
	* elf32-score.c (elf32_score_howto_table): Likewise.
	* elf32-score7.c (elf32_score_howto_table): Likewise.
	* elf32-sh-relocs.h (R_SH_NONE): Likewise.
	* elf32-spu.c (elf_howto_table): Likewise.
	* elf32-tic6x.c (elf32_tic6x_howto_table): Likewise.
	* elf32-tilepro.c (tilepro_elf_howto_table): Likewise.
	* elf32-v850.c (v850_elf_howto_table): Likewise.
	* elf32-vax.c (howto_table): Likewise.
	* elf32-visium.c (visium_elf_howto_table): Likewise.
	* elf32-xc16x.c (xc16x_elf_howto_table): Likewise.
	* elf32-xgate.c (elf_xgate_howto_table): Likewise.
	* elf32-xstormy16.c (xstormy16_elf_howto_table): Likewise.
	* elf32-xtensa.c (elf_howto_table): Likewise.
	* elf64-alpha.c (elf64_alpha_howto_table): Likewise.
	* elf64-mips.c (mips_elf64_howto_table_rel): Likewise.
	* elf64-mmix.c (elf_mmix_howto_table): Likewise.
	* elf64-ppc.c (ppc64_elf_howto_raw): Likewise.
	* elf64-s390.c (elf_howto_table): Likewise.
	* elf64-sh64.c (sh_elf64_howto_table): Likewise.
	* elf64-x86-64.c (x86_64_elf_howto_table): Likewise.
	* elfn32-mips.c (elf_mips_howto_table_rel): Likewise.
	* elfnn-aarch64.c (elfNN_aarch64_howto_table): Likewise.
	(elfNN_aarch64_howto_none): Likewise.
	* elfxx-ia64.c (ia64_howto_table): Likewise.
	* elfxx-sparc.c (_bfd_sparc_elf_howto_table): Likewise.
	* elfxx-tilegx.c (tilegx_elf_howto_table): Likewise.
	* nlm32-sparc.c (nlm32_sparc_howto_table): Likewise.
 2015-01-19 19:37:45 +10:30