gold/
PR gold/21444
* gold.cc (Target_sparc::Relocate::relocate_tls): Local
variables are final for position-independent executables. This
has to be consistent with Target_sparc::Scan::local otherwise
they will disagree as to whether local-exec is used.
gold/ChangeLog
PR gold/21430
* aarch64.cc
(AArch64_relobj::convert_input_section_to_relaxed_section):
Set the section offset to -1ULL.
(Target_aarch64::relocate_section): Adjust the view in case
of a relaxed input section.
* testsuite/Makefile.am (pr21430): New test.
* testsuite/Makefile.in: Regenerate
* testsuite/pr21430.s: New test source file.
* testsuite/pr21430.sh: New test script.
If there are more than GNU property note in an input, we should merge
X86_ISA_1_USED and X86_ISA_1_NEEDED properties.
bfd/
* elf32-i386.c (elf_i386_parse_gnu_properties): Merge
GNU_PROPERTY_X86_ISA_1_USED and GNU_PROPERTY_X86_ISA_1_NEEDED
properties.
* elf64-x86-64.c (elf_x86_64_parse_gnu_properties): Likewise.
ld/
* testsuite/ld-i386/i386.exp: Run property-x86-3.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
* testsuite/ld-i386/property-x86-3.d: New file.
* testsuite/ld-i386/property-x86-3.s: Likewise.
* testsuite/ld-x86-64/property-x86-3.d: Likewise.
* testsuite/ld-x86-64/property-x86-3.s: Likewise.
The STRUCTOP_STRUCT case in rust_evaluate_subexp would evaluate its
LHS, and then, if it did not need Rust-specific treatment, it would
back up and re-evaluate the entire STRUCTOP_STRUCT part of the
expression using evaluate_subexp_standard. This yields exponential
behavior and causes some expressions to evaluate extremely slowly.
The fix is to simply do the needed work inline.
This is PR rust/21483.
ChangeLog
2017-05-12 Tom Tromey <tom@tromey.com>
PR rust/21483:
* rust-lang.c (rust_evaluate_subexp) <STRUCTOP_STRUCT>: Don't
recurse, just call value_struct_elt directly.
rust_dump_subexp_body was not correct in a couple of cases. While
debugging the bug I was really interested in, this caused a crash.
This patch fixes the problems. No test case because, IIRC there
generally aren't tests for expression dumping.
ChangeLog
2017-05-12 Tom Tromey <tom@tromey.com>
* rust-lang.c (rust_dump_subexp_body) <STRUCTOP_ANONYMOUS,
OP_RUST_ARRAY>: Fix.
This replaces a "return" with a "break" in rust_print_subexp, for
consistency.
ChangeLog
2017-05-12 Tom Tromey <tom@tromey.com>
* rust-lang.c (rust_print_subexp): Replace "return" with "break".
For a reason that is unclear commit d6f1659387 ("Support for MIPS16
HI16/LO16 relocations"),
<https://sourceware.org/ml/binutils/2005-02/msg00332.html>, which has
added support for the R_MIPS16_GPREL relocation, has spelled its
corresponding MIPS16 percent-op as `%gprel', rather than `%gp_rel' which
is how its regular MIPS counterpart is spelled. To make assembly code
sharing easier between the regular MIPS and the MIPS16 ISA make both
percent-op spellings acceptable in both kinds of code now.
Parts of this change by Matthew Fortune.
gas/
* config/tc-mips.c (mips_percent_op): Add "%gprel".
(mips16_percent_op): Add "%gp_rel".
* testsuite/gas/mips/elf-rel8.s:: Add `%gprel' forms.
* testsuite/gas/mips/elf-rel8-mips16.s: Add `%gp_rel' forms.
* testsuite/gas/mips/elf-rel8.d: Adjust accordingly.
* testsuite/gas/mips/elf-rel8-mips16.d: Likewise.
Disassemble the MIPS16 BREAK and SDBBP instruction's immediate operand
in the hexadecimal rather than decimal numeral system and add respective
operandless variants with an implicit 0 operand, making our handling of
these instructions consistent with how we have processed their regular
MIPS and microMIPS counterparts since forever.
opcodes/
* mips16-opc.c (decode_mips16_operand) <'6'>: Switch the operand
type to hexadecimal.
(mips16_opcodes): Add operandless "break" and "sdbbp" entries.
binutils/
* testsuite/binutils-all/mips/mips16-extend-insn.d: Adjust BREAK
and SDBBP disassembly.
gas/
* testsuite/gas/mips/mips16.d: Adjust BREAK disassembly.
* testsuite/gas/mips/mips16-64@mips16.d: Likewise.
* testsuite/gas/mips/mips16-64.d: Likewise.
* testsuite/gas/mips/mips16-64@mips16-64.d: Likewise.
* testsuite/gas/mips/mips16-macro.d: Likewise.
* testsuite/gas/mips/mips16-64@mips16-macro.d: Likewise.
* testsuite/gas/mips/mips16-sub.d: Likewise.
* testsuite/gas/mips/mips16-32@mips16-sub.d: Likewise.
Following the way how descriptive SYNC mnemonics have been defined in
the architecture[1][2] mark them as aliases, so that the generic SYNC
instruction can be alternatively disassembled along with its immediate
operand, as noted in the documents referred.
References:
[1] "MIPS Architecture For Programmers, Volume II-A: The MIPS32
Instruction Set", MIPS Technologies, Inc., Document Number: MD00086,
Revision 5.04, December 11, 2013, Table 4.7 "Encodings of the
Bits[10:6] of the SYNC instruction; the SType Field", p. 305
[2] "MIPS Architecture for Programmers, Volume II-B: The microMIPS32
Instruction Set", MIPS Technologies, Inc., Document Number: MD00582,
Revision 5.04, January 15, 2014, Table 5.28 "Encodings of the
Bits[10:6] of the SYNC instruction; the SType Field", p. 481
opcodes/
* mips-opc.c (mips_builtin_opcodes): Mark "synciobdma", "syncs",
"syncw", "syncws", "sync_acquire", "sync_mb", "sync_release",
"sync_rmb" and "sync_wmb" as aliases.
* micromips-opc.c (micromips_opcodes): Mark "sync_acquire",
"sync_mb", "sync_release", "sync_rmb" and "sync_wmb" as aliases.
gas/
* testsuite/gas/mips/mips32r2-sync-1.d: New test.
* testsuite/gas/mips/micromips@mips32r2-sync-1.d: New test.
* testsuite/gas/mips/mips.exp: Run the new tests.
Rename .plt.bnd to .plt.sec to indicate that this is used as the second
PLT section. There is no change in run-time behavior. We also scan the
.plt.sec section to synthesize PLT symbols.
bfd/
* elf64-x86-64.c (elf_x86_64_link_hash_entry): Rename plt_bnd
to plt_second.
(elf_x86_64_link_hash_table): Rename plt_bnd/plt_bnd_eh_frame
to plt_second/plt_second_eh_frame.
(elf_x86_64_link_hash_newfunc): Updated.
(elf_x86_64_allocate_dynrelocs): Likewise.
(elf_x86_64_size_dynamic_sections): Likewise.
(elf_x86_64_relocate_section): Likewise.
(elf_x86_64_finish_dynamic_symbol): Likewise.
(elf_x86_64_finish_dynamic_sections): Likewise.
(elf_x86_64_plt_type): Rename plt_bnd to plt_second.
(elf_x86_64_get_synthetic_symtab): Updated. Also scan the
.plt.sec section.
(elf_backend_setup_gnu_properties): Updated. Create the
.plt.sec section instead of the .plt.sec section.
ld/
* emulparams/elf_x86_64.sh (TINY_READONLY_SECTION): Replace
.plt.bnd with .plt.sec.
* testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise.
* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
* testsuite/ld-x86-64/bnd-ifunc-2.d: Likewise.
* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
* testsuite/ld-x86-64/bnd-plt-1.d: Likewise.
* testsuite/ld-x86-64/mpx3.dd: Likewise.
* testsuite/ld-x86-64/mpx3n.dd: Likewise.
* testsuite/ld-x86-64/mpx4.dd: Likewise.
* testsuite/ld-x86-64/mpx4n.dd: Likewise.
* testsuite/ld-x86-64/plt-main-bnd-now.rd: Likewise.
* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
* testsuite/ld-x86-64/pr21038b.d: Likewise.
* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
* testsuite/ld-x86-64/pr21038c.d: Likewise.
This patch partially reverses:
commit 25070364b0
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sat May 16 07:00:21 2015 -0700
Don't generate PLT relocations for now binding
to support LD_AUDIT and LD_PROFILE with -z now. If there is an existing
GOT relocation, it is still used to avoid PLT relocation against the same
function symbol.
bfd/
* elf32-i386.c (elf_i386_allocate_dynrelocs): Partially revert
commit 25070364b0.
* elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Likewse.
ld/
* testsuite/ld-i386/plt-pic2.dd: Updated.
* testsuite/ld-i386/plt2.dd: Likewise.
* testsuite/ld-i386/plt2.rd: Likewise.
* testsuite/ld-i386/pr17689now.rd: Likewise.
* testsuite/ld-ifunc/ifunc-16-i386-now.d: Likewise.
* testsuite/ld-ifunc/ifunc-16-x86-64-now.d: Likewise.
* testsuite/ld-ifunc/pr17154-i386-now.d: Likewise.
* testsuite/ld-ifunc/pr17154-x86-64-now.d: Likewise.
* testsuite/ld-x86-64/bnd-branch-1-now.d: Likewise.
* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
* testsuite/ld-x86-64/plt2.dd: Likewise.
* testsuite/ld-x86-64/plt2.rd: Likewise.
* testsuite/ld-x86-64/pr17689now.rd: Likewise.
* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
And remove the zillion duplicate sources. Also `mips1@isa-override-2.l'
is the same as `r3000@isa-override-2.l', so remove the latter too, now
that `r3000@isa-override-2.d' can name a file to match stderr output
against.
gas/
* testsuite/gas/mips/isa-override-2.d: New test.
* testsuite/gas/mips/mips1@isa-override-2.d: New test.
* testsuite/gas/mips/r3000@isa-override-2.d: New test.
* testsuite/gas/mips/r3900@isa-override-2.d: New test.
* testsuite/gas/mips/mips2@isa-override-2.d: New test.
* testsuite/gas/mips/mips32@isa-override-2.d: New test.
* testsuite/gas/mips/mips32r2@isa-override-2.d: New test.
* testsuite/gas/mips/mips32r3@isa-override-2.d: New test.
* testsuite/gas/mips/mips32r5@isa-override-2.d: New test.
* testsuite/gas/mips/mips32r6@isa-override-2.d: New test.
* testsuite/gas/mips/octeon3@isa-override-2.d: New test.
* testsuite/gas/mips/r3000@isa-override-2.l: Remove list test.
* testsuite/gas/mips/mips1@isa-override-2.s: Remove test source.
* testsuite/gas/mips/r3000@isa-override-2.s: Remove test source.
* testsuite/gas/mips/r3900@isa-override-2.s: Remove test source.
* testsuite/gas/mips/mips2@isa-override-2.s: Remove test source.
* testsuite/gas/mips/mips32@isa-override-2.s: Remove test
source.
* testsuite/gas/mips/mips32r2@isa-override-2.s: Remove test
source.
* testsuite/gas/mips/mips32r3@isa-override-2.s: Remove test
source.
* testsuite/gas/mips/mips32r5@isa-override-2.s: Remove test
source.
* testsuite/gas/mips/mips32r6@isa-override-2.s: Remove test
source.
* testsuite/gas/mips/octeon3@isa-override-2.s: Remove test
source.
* gas/testsuite/gas/mips/mips.exp: Fold corresponding list tests
into the new tests.
Define `tempfile' and `copyfile' in `mips.exp' so that standalone script
execution via `RUNTESTFLAGS=mips.exp' works rather than producing:
Running .../binutils/testsuite/binutils-all/mips/mips.exp ...
ERROR: tcl error sourcing
.../binutils/testsuite/binutils-all/mips/mips.exp.
ERROR: can't read "tempfile": no such variable
while executing
"binutils_assemble_flags ${srcfile} $tempfile $opts(as)"
(procedure "run_dump_test" line 207)
invoked from within
"run_dump_test "mips-ase-1""
invoked from within
"if [is_elf_format] {
run_dump_test "mips-ase-1"
run_dump_test "mips-ase-2"
run_dump_test "mips-ase-3"
run_dump_test "mixed-mips16"
..."
(file ".../binutils/testsuite/binutils-all/mips/mips.exp" line 22)
invoked from within
"source .../binutils/testsuite/binutils-all/mips/mips.exp"
("uplevel" body line 1)
invoked from within
"uplevel #0 source .../binutils/testsuite/binutils-all/mips/mips.exp"
invoked from within
"catch "uplevel #0 source $test_file_name""
testcase .../binutils/testsuite/binutils-all/mips/mips.exp completed in 0 seconds
binutils/
* testsuite/binutils-all/mips/mips.exp: Define `tempfile' and
`copyfile' variables.
All linker targets based on elf32-i386 should check relocations after
opening all inputs since this is how elf32-i386 works.
* emulparams/i386lynx.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Set
to yes.
* emulparams/i386moss.sh (CHECK_RELOCS_AFTER_OPEN_INPUT):
Likewise.
* emulparams/i386nw.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise.
This patch fixes the deletion of relocations in BFD sections in
sparc64 targets.
A specialized `_bfd_set_reloc' function is provided that updates the
internal canon_reloc_count(sec) counter instead of sec->reloc_count.
Additionally, the `write_relocs' callback in elf64-sparc is adapted to
use the canon_reloc_count to traverse `sec->orelocation'.
Tested in sparc64-linux-gnu targets.
Fixes an existing failure in the merge-notes objcopy test.
No regressions.
bfd/ChangeLog:
2017-05-10 Jose E. Marchesi <jose.marchesi@oracle.com>
* elf64-sparc.c (elf64_sparc_set_reloc): New function.
(bfd_elf64_set_reloc): Define.
(elf64_sparc_write_relocs): Use `canon_reloc_count'.
This patch adds a new entry point to the BFD_JUMP_TABLE_RELOCS. The
previous common implementation `bfd_set_reloc', in bfd/bfd.c, has been
moved to bfd/reloc.c with the name `_bfd_generic_set_reloc', and all
BFD targets has been adapted to use it.
This patch doesn't introduce any change on functionality, but prepares
the ground for further work.
bfd/ChangeLog:
2017-05-10 Jose E. Marchesi <jose.marchesi@oracle.com>
* targets.c (BFD_JUMP_TABLE_RELOCS): Add NAME##_set_reloc.
(struct bfd_target): New field _bfd_set_reloc.
* bfd.c (bfd_set_reloc): Call backend _set_bfd.
* reloc.c (_bfd_generic_set_reloc): New function.
* coffcode.h (coff_set_reloc): Define to _bfd_generic_set_reloc.
* nlm-target.h (nlm_set_reloc): Likewise.
* coff-rs6000.c (_bfd_xcoff_set_reloc): Likewise.
* aout-tic30.c (MY_set_reloc): Likewise.
* aout-target.h (MY_set_reloc): Likewise.
* elfxx-target.h (bfd_elfNN_set_reloc): Likewise.
* coff-alpha.c (_bfd_ecoff_set_reloc): Likewise.
* mach-o-target.c (bfd_mach_o_set_reloc): Likewise.
* vms-alpha.c (alpha_vms_set_reloc): Likewise.
* aout-adobe.c (aout_32_set_reloc): Likewise.
* bout.c (b_out_set_reloc): Likewise.
* coff-mips.c (_bfd_ecoff_set_reloc): Likewise.
* i386os9k.c (aout_32_set_reloc): Likewise.
* ieee.c (ieee_set_reloc): Likewise.
* oasys.c (oasys_set_reloc): Likewise.
* som.c (som_set_reloc): Likewise.
* versados.c (versados_set_reloc): Likewise.
* coff64-rs6000.c (rs6000_xcoff64_vec): Add
_bfd_generic_set_reloc.
(rs6000_xcoff64_aix_vec): LIkewise.
* libbfd.c (_bfd_norelocs_set_reloc): New function.
* libbfd-in.h: Prototype for _bfd_norelocs_set_reloc.
* i386msdos.c (msdos_set_reloc): Define to
_bfd_norelocs_set_reloc.
* elfcode.h (elf_set_reloc): Define.
* bfd-in2.h: Regenerated.
When -z bndplt is used, we must use the .plt.bnd entry for IFUNC function
address.
bfd/
PR ld/21481
* elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Use .plt.bnd
for IFUNC function address.
ld/
PR ld/21481
* testsuite/ld-x86-64/pr21481a.c: New file.
* testsuite/ld-x86-64/pr21481b.S: Likewise.
* testsuite/ld-x86-64/x86-64.exp: Run PR ld/21481 tests.
Complement commit c60aaac10f ("MIPS/GAS/testsuite: Extend MIPS16
testing over multiple ISAs") and remove a stale `mips16-macro' list test
output replaced with the `mips16-32@mips16-macro' stderr output.
gas/
* testsuite/gas/mips/mips16-macro.l: Remove list test.
This patch adds a unit test to current_regcache, to make sure it is
correctly updated by get_thread_arch_aspace_regcache and
registers_changed_ptid.
gdb:
2017-05-09 Yao Qi <yao.qi@linaro.org>
* regcache.c [GDB_SELF_TEST]: Include selftest.h.
(current_regcache_size): New function.
(current_regcache_test): New function.
(_initialize_regcache) [GDB_SELF_TEST]: Register the unit test.
PR ld/21458
* elf32-arm.c (elf32_arm_final_link_relocate): Set the bottom bit
of the value when resolving a R_ARM_THM_ALU_PREL_11_0 relocation
and the destination is a Thumb symbol.
On x86-64, the procedure linkage table (PLT) is used to
1. Call external function.
2. Call internal IFUNC function. The best implementation is selected
for the target processor at run-time.
3. Act as the canonical function address.
4. Support LD_AUDIT to audit external function calls.
5. Support LD_PROFILE to profile external function calls.
PLT looks like:
PLT0: push GOT[1]
jmp *GOT[2]
nop
PLT1: jmp *GOT[name1_index]
push name1_reloc_index
jmp PLT0
GOT is an array of addresses. Initially the GOT entry of name1 is
filled with the address of the "push name1_reloc_index" instruction.
The function, name1, is called via "jmp *GOT[name1]" in the PLT entry.
Even when lazy binding is disabled by "-z now", the PLT0 entry may
still be used with LD_AUDIT or LD_PROFILE if PLT entry is used for
canonical function address.
When linker is invoked with "-z bndplt", a different PLT layout in .plt
is used:
PLT0: push GOT[1]
bnd jmp *GOT[2]
nop
PLT1: push name1_reloc_index
bnd jmp PLT0
nop
together with a second PLT section, .pl.bnd:
PLT1: bnd jmp *GOT[name1_index]
nop
where the GOT entry of name1 is filled with the address of the push
instruction of the corresponding entry in .plt.
1. With lazy binding, when the external function, name1, is called the
first time, dynamic linker is called via PLT0 to update GOT[name1_index]
with the actual address of name1 and transfers control to name1
afterwards.
2. PLT is also used to call a local IFUNC function, name1, run-time
loader updates GOT[name1_index] when loading the module.
This patch
1. Remove PLT layout configurations from x86-64 backend_data.
2. Add generic, lay and non-lazy PLT layout configurations to x86-64
link_hash_table. Generic PLT layout includes the PLT entry templates,
information how to update the first instruction in PLT and PLT eh_frame
informaton, which are initialized in x86-64 setup_gnu_properties, based
on "-z bndplt" and target selection. PLT section alignment is also set
to PLT entry size for non-NaCl target.
3. Remove elf_x86_64_create_dynamic_sections. create_dynamic_sections
isn't always called, but GOT relocations need GOT relocations. Instead,
create all x86-64 specific dynamic sections with alignment to their entry
size in x86-64 setup_gnu_properties, which initializes elf.dynobj, so
that x86-64 check_relocs can be simplified.
4. Rewrite elf_x86_64_get_synthetic_symtab to check PLT sections against
all dynamic relocations to support both lazy and non-lazy PLTs.
There is no change in PLT. The only externally visible change is the
improvement of synthetic PLT symbols for .plt.got.
bfd/
* elf64-x86-64.c (PLT_ENTRY_SIZE): Renamed to ...
(LAZY_PLT_ENTRY_SIZE): This.
(NON_LAZY_PLT_ENTRY_SIZE): New.
(elf_x86_64_plt0_entry): Renamed to ...
(elf_x86_64_lazy_plt0_entry): This.
(elf_x86_64_plt_entry): Renamed to ...
(elf_x86_64_lazy_plt_entry): This.
(elf_x86_64_bnd_plt0_entry): Renamed to ...
(elf_x86_64_lazy_bnd_plt0_entry): This.
(elf_x86_64_legacy_plt_entry): Removed.
(elf_x86_64_bnd_plt_entry): Renamed to ...
(elf_x86_64_lazy_bnd_plt_entry): This.
(elf_x86_64_legacy_plt2_entry): Renamed to ...
(elf_x86_64_non_lazy_plt_entry): This.
(elf_x86_64_bnd_plt2_entry): Renamed to ...
(elf_x86_64_non_lazy_bnd_plt_entry): This.
(elf_x86_64_eh_frame_plt): Renamed to ...
(elf_x86_64_eh_frame_lazy_plt): This.
(elf_x86_64_eh_frame_bnd_plt): Renamed to ...
(elf_x86_64_eh_frame_lazy_bnd_plt): This.
(elf_x86_64_eh_frame_plt_got): Renamed to ...
(elf_x86_64_eh_frame_non_lazy_plt): This.
(elf_x86_64_lazy_plt_layout): New.
(elf_x86_64_non_lazy_plt_layout): Likewise.
(elf_x86_64_plt_layout): Likewise.
(elf_x86_64_backend_data): Remove PLT layout information. Add
os for target system.
(GET_PLT_ENTRY_SIZE): Removed.
(elf_x86_64_lazy_plt): New.
(elf_x86_64_non_lazy_plt): Likewise.
(elf_x86_64_lazy_bnd_plt): Likewise.
(elf_x86_64_non_lazy_bnd_plt): Likewise.
(elf_x86-64_arch_bed): Updated.
(elf_x86_64_link_hash_table): Add plt, lazy_plt and non_lazy_plt.
(elf_x86_64_create_dynamic_sections): Removed.
(elf_x86_64_check_relocs): Don't check elf.dynobj. Don't call
_bfd_elf_create_ifunc_sections nor _bfd_elf_create_got_section.
(elf_x86-64_adjust_dynamic_symbol): Updated.
(elf_x86_64_allocate_dynrelocs): Updated. Pass 0 as PLT header
size to _bfd_elf_allocate_ifunc_dyn_relocs and don't allocate
size for PLT0 if there is no PLT0. Get plt_entry_size from
non_lazy_plt for non-lazy PLT entries.
(elf_x86_64_size_dynamic_sections): Updated. Get plt_entry_size
from non_lazy_plt for non-lazy PLT entries.
(elf_x86-64_relocate_section): Updated. Properly get PLT index
if there is no PLT0.
(elf_x86_64_finish_dynamic_symbol): Updated. Fill the first slot
in the PLT entry with generic PLT layout. Fill the non-lazy PLT
entries with non-lazy PLT layout. Don't fill the second and third
slots in the PLT entry if there is no PLT0.
(elf_x86_64_finish_dynamic_sections): Updated. Don't fill PLT0
if there is no PLT0. Set sh_entsize on the .plt.got section.
(compare_relocs): New.
(elf_x86_64_plt_type): Likewise.
(elf_x86_64_plt): Likewise.
(elf_x86_64_nacl_plt): New. Forward declaration.
(elf_x86_64_get_plt_sym_val): Removed.
(elf_x86_64_get_synthetic_symtab): Rewrite to check PLT sections
against all dynamic relocations.
(elf_x86_64_link_setup_gnu_properties): New function.
(elf_backend_create_dynamic_sections): Updated.
(elf_backend_setup_gnu_properties): New.
(elf_x86_64_nacl_plt): New.
(elf_x86_64_nacl_arch_bed): Updated.
ld/
* testsuite/ld-ifunc/ifunc-16-x86-64-now.d: New file.
* testsuite/ld-ifunc/ifunc-2-local-x86-64-now.d: Likewise.
* testsuite/ld-ifunc/ifunc-2-x86-64-now.d: Likewise.
* testsuite/ld-ifunc/pr17154-x86-64-now.d: Likewise.
* testsuite/ld-x86-64/bnd-branch-1-now.d: Likewise.
* testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise.
* testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise.
* testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise.
* testsuite/ld-x86-64/mpx3n.dd: Likewise.
* testsuite/ld-x86-64/mpx4n.dd: Likewise.
* testsuite/ld-x86-64/plt-main-bnd-now.rd: Likewise.
* testsuite/ld-x86-64/plt2.dd: Likewise.
* testsuite/ld-x86-64/plt2.rd: Likewise.
* testsuite/ld-x86-64/plt2.s: Likewise.
* testsuite/ld-x86-64/pr20830a-now.d: Likewise.
* testsuite/ld-x86-64/pr20830b-now.d: Likewise.
* testsuite/ld-x86-64/pr21038a-now.d: Likewise.
* testsuite/ld-x86-64/pr21038b-now.d: Likewise.
* testsuite/ld-x86-64/pr21038c-now.d: Likewise.
* testsuite/ld-x86-64/load1b-nacl.d: Updated.
* testsuite/ld-x86-64/load1b.d: Likewise.
* testsuite/ld-x86-64/plt-main-bnd.dd: Likewise.
* testsuite/ld-x86-64/pr20253-1h.d: Likewise.
* testsuite/ld-x86-64/pr20830a.d: Update the .plt.got section
with func@plt.
* testsuite/ld-x86-64/pr20830b.d: Likewise.
* testsuite/ld-x86-64/pr21038a.d: Likewise.
* testsuite/ld-x86-64/pr21038c.d: Likewise.
* testsuite/ld-x86-64/mpx.exp: Add some -z now tests.
* testsuite/ld-x86-64/x86-64.exp: Likewise.
This fixes a problem with a missing R_390_64 reloc against .data for a
function pointer to an ifunc function.
No regressions on s390x.
Pushed to mainline.
bfd/ChangeLog:
2017-05-08 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* elf-s390-common.c: Don't check non_got_ref flag.
* elf32-s390.c (elf_s390_relocate_section): Likewise.
* elf64-s390.c (elf_s390_relocate_section): Likewise.
On i386, the procedure linkage table (PLT) is used to
1. Call external function.
2. Call internal IFUNC function. The best implementation is selected
for the target processor at run-time.
3. Act as the canonical function address.
4. Support LD_AUDIT to audit external function calls.
5. Support LD_PROFILE to profile external function calls.
PLT looks like:
PLT0: push GOT[1]
jmp *GOT[2]
nop
PLT1: jmp *GOT[name1_index]
push name1_reloc_index
jmp PLT0
GOT is an array of addresses. Initially the GOT entry of name1 is
filled with the address of the "push name1_reloc_index" instruction.
The function, name1, is called via "jmp *GOT[name1]" in the PLT entry.
Even when lazy binding is disabled by "-z now", the PLT0 entry may
still be used with LD_AUDIT or LD_PROFILE if PLT entry is used for
canonical function address.
1. With lazy binding, when the external function, name1, is called the
first time, dynamic linker is called via PLT0 to update GOT[name1_index]
with the actual address of name1 and transfers control to name1
afterwards.
2. PLT is also used to call a local IFUNC function, name1, run-time
loader updates GOT[name1_index] when loading the module.
This patch
1. Remove PLT layout configurations from i386 backend_data.
2. Add generic, lay and non-lazy PLT layout configurations to i386
link_hash_table. Generic PLT layout includes the PLT entry templates,
information how to update the first instruction in PLT and PLT eh_frame
informaton, which are initialized in i386 setup_gnu_properties, based
on PIC and target selection. PLT section alignment is also set to PLT
entry size for non-NaCl/VxWorks target.
3. Remove elf_i386_create_dynamic_sections. create_dynamic_sections
isn't always called, but GOT relocations need GOT relocations. Instead,
create all i386 specific dynamic sections in i386 setup_gnu_properties,
which initializes elf.dynobj, so that i386 check_relocs can be simplified.
4. Rewrite elf_i386_get_synthetic_symtab to check PLT sections against
all dynamic relocations to support both lazy and non-lazy PLTs.
bfd/
* elf32-i386.c (PLT_ENTRY_SIZE): Renamed to ...
(LAZY_PLT_ENTRY_SIZE): This.
(NON_LAZY_PLT_ENTRY_SIZE): New.
(elf_i386_plt0_entry): Renamed to ...
(elf_i386_lazy_plt0_entry): This.
(elf_i386_plt_entry): Renamed to ...
(elf_i386_lazy_plt_entry): This.
(elf_i386_pic_plt0_entry): Renamed to ...
(elf_i386_pic_lazy_plt0_entry): This.
(elf_i386_pic_plt_entry): Renamed to ...
(elf_i386_pic_lazy_plt_entry): This.
(elf_i386_got_plt_entry): Renamed to ...
(elf_i386_non_lazy_plt_entry): This.
(elf_i386_pic_got_plt_entry): Renamed to ...
(elf_i386_pic_non_lazy_plt_entry): This.
(elf_i386_eh_frame_plt): Renamed to ...
(elf_i386_eh_frame_lazy_plt): This.
(elf_i386_eh_frame_plt_got): Renamed to ...
(elf_i386_eh_frame_non_lazy_plt): This.
(elf_i386_plt_layout): Renamed to ...
(elf_i386_lazy_plt_layout): This. Remove eh_frame_plt_got and
eh_frame_plt_got_size.
(elf_i386_non_lazy_plt_layout): New.
(elf_i386_plt_layout): Likewise.
(elf_i386_non_lazy_plt): Likewise.
(GET_PLT_ENTRY_SIZE): Removed.
(elf_i386_plt): Renamed to ...
(elf_i386_lazy_plt): This.
(elf_i386_backend_data): Remove plt. Rename is_vxworks to os.
(elf_i386_arch_bed): Updated.
(elf_i386_link_hash_table): Add plt, lazy_plt and non_lazy_plt.
(elf_i386_create_dynamic_sections): Removed.
(elf_i386_check_relocs): Don't check elf.dynobj. Don't call
_bfd_elf_create_ifunc_sections nor _bfd_elf_create_got_section.
(elf_i386_adjust_dynamic_symbol): Updated.
(elf_i386_allocate_dynrelocs): Updated. Pass 0 as PLT header
size to _bfd_elf_allocate_ifunc_dyn_relocs and don't allocate
size for PLT0 if there is no PLT0.
(elf_i386_size_dynamic_sections): Updated. Check whether GOT
output section is discarded only if GOT isn't empty.
(elf_i386_relocate_section): Updated. Properly get PLT index
if there is no PLT0.
(elf_i386_finish_dynamic_symbol): Updated. Don't fill the
second and third slots in the PLT entry if there is no PLT0.
(elf_i386_finish_dynamic_sections): Updated. Don't fill PLT0
if there is no PLT0. Set sh_entsize on the .plt.got section.
(elf_i386_nacl_plt): Forward declaration.
(elf_i386_get_plt_sym_val): Removed.
(elf_i386_get_synthetic_symtab): Rewrite to check PLT sections
against all dynamic relocations.
(elf_i386_link_setup_gnu_properties): New function.
(elf_backend_create_dynamic_sections): Updated.
(elf_backend_setup_gnu_properties): New.
(elf_i386_nacl_plt): Updated.
(elf_i386_nacl_arch_bed): Likewise.
(elf_i386_vxworks_arch_bed): Likewise.
ld/
* testsuite/ld-i386/i386.exp: Add some -z now tests.
* testsuite/ld-i386/plt-pic2.dd: New file.
* testsuite/ld-i386/plt2.dd: Likewise.
* testsuite/ld-i386/plt2.rd: Likewise.
* testsuite/ld-i386/plt2.s: Likewise.
* testsuite/ld-ifunc/ifunc-16-i386-now.d: Likewise.
* testsuite/ld-ifunc/ifunc-2-i386-now.d: Likewise.
* testsuite/ld-ifunc/ifunc-2-local-i386-now.d: Likewise.
* testsuite/ld-ifunc/pr17154-i386-now.d: Likewise.
* testsuite/ld-i386/pr20830.d: Update the .plt.got section
with func@plt.
For ELF targets --out-implib currently generates an executable file
(e_type is ET_EXEC) despite the file being expected to be linked against
some other object file to make an executable later. It seems therefore
more sensible to make the import library a relocatable object file
(e_type set to ET_REL).
Incidentally, as dicted by requirement 8 of
"ARM v8-M Security Extensions: Requirements on Development Tools"
(document ARM-ECM-0359818) version 1.0, import libraries generated when
using --cmse-implib *must* be relocatable object file so this commit
also adds an assert there in case the type of ELF import library is
changed again in the future.
2017-05-08 Thomas Preud'homme <thomas.preudhomme@arm.com>
bfd/
* elflink.c (elf_output_implib): Remove executable flag from import
library bfd.
* elf32-arm.c (elf32_arm_filter_implib_symbols): Assert that the import
library is a relocatable object file.
ld/
* testsuite/ld-arm/arm-elf.exp
(Secure gateway import library generation): Check e_type field
of import library and executable produced.
* testsuite/ld-arm/cmse-implib.type: Expectations for e_type field.
The previous commit introduced gdb/configure.nat, but it was just a
copy-and-past (with the necessary adjustments) from the files under
gdb/config/. We can do better than that.
Instead of using one big 'case' statement that matches the
${gdb_host_cpu} and then match each ${gdb_host}, it is possible to
remove a lof of redundancy by matching the most common ${gdb_host}'s
first, setting the common variables for each, and then proceed to
matching specific ${gdb_host}'s and ${gdb_host_cpu}'s. In other
words, reverse the order of the 'case's and take advantage of the fact
that a lot of parameters are the same for each host.
This commit was tested on x86_64 without regressions.
gdb/ChangeLog:
2017-05-06 Sergio Durigan Junior <sergiodj@redhat.com>
* configure.nat: Rearrange 'case' statements to match
host before cpu.
Due to my ongoing work to make it possible for gdbserver to start the
inferior using the shell, I had to share the fork_inferior function
under the "nat/" directory. In order to do that, I created a new file
and put the function there; however, this meant that I now had to
update some of the *.mh files (under "gdb/config") and add the new
file as a dependency to be built natively. Bleh...
After talking a bit to Pedro about this, the idea came up to write a
new "gdb/configure.nat" file, a la "gdb/configure.tgt", which would
concentrate all of the native settings for each host/system. I
decided to tackle this issue.
The patch is simple. All of the previous Makefile variables that were
being declared inside the *.mh files are now inside "gdb/Makefile.in",
and "gdb/configure" is responsible for AC_SUBST'ing them. The
definitions of these variables were put inside "gdb/configure.nat", so
now they're shell variables. For excerpts of Makefile code, one must
create a file under "gdb/config/${gdb_cpu_host}" and reference it on
the "nat_extra_makefile_frag" variable.
It should now be easier to update the native dependencies of hosts in
this single file.
This has been tested on x86_64 without regressions.
gdb/ChangeLog:
2017-05-06 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile.in: Remove "@host_makefile_frag@". Add variables
NAT_FILE, NATDEPFILES, NAT_CDEPS, LOADLIBES, MH_CFLAGS, XM_CLIBS,
NAT_GENERATED_FILES, HAVE_NATIVE_GCORE_HOST. Add
"@nat_extra_makefile_frag@".
(Makefile): Remove dependency on "@frags@".
($(GNULIB_BUILDDIR)/Makefile): Likewise.
(data-directory/Makefile): Likewise.
* config/aarch64/linux.mh: Deleted; moved contents to
"gdb/configure.nat".
* config/alpha/alpha-linux.mh: Likewise.
* config/alpha/nbsd.mh: Likewise.
* config/arm/linux.mh: Likewise.
* config/arm/nbsdelf.mh: Likewise.
* config/i386/cygwin.mh: Likewise.
* config/i386/cygwin64.mh: Likewise.
* config/i386/darwin.mh: Likewise.
* config/i386/fbsd.mh: Likewise.
* config/i386/fbsd64.mh: Likewise.
* config/i386/go32.mh: Likewise.
* config/i386/i386gnu.mh: Likewise.
* config/i386/i386sol2.mh: Likewise.
* config/i386/linux.mh: Likewise.
* config/i386/linux64.mh: Likewise.
* config/i386/mingw.mh: Likewise.
* config/i386/mingw64.mh: Likewise.
* config/i386/nbsd64.mh: Likewise.
* config/i386/nbsdelf.mh: Likewise.
* config/i386/nto.mh: Likewise.
* config/i386/obsd.mh: Likewise.
* config/i386/obsd64.mh: Likewise.
* config/i386/sol2-64.mh: Likewise.
* config/ia64/linux.mh: Likewise.
* config/m32r/linux.mh: Likewise.
* config/m68k/linux.mh: Likewise.
* config/m68k/nbsdelf.mh: Likewise.
* config/m68k/obsd.mh: Likewise.
* config/m88k/obsd.mh: Likewise.
* config/mips/fbsd.mh: Likewise.
* config/mips/linux.mh: Likewise.
* config/mips/nbsd.mh: Likewise.
* config/mips/obsd64.mh: Likewise.
* config/pa/linux.mh: Likewise.
* config/pa/nbsd.mh: Likewise.
* config/pa/obsd.mh: Likewise.
* config/powerpc/aix.mh: Likewise.
* config/powerpc/fbsd.mh: Likewise.
* config/powerpc/linux.mh: Likewise.
* config/powerpc/nbsd.mh: Likewise.
* config/powerpc/obsd.mh: Likewise.
* config/powerpc/ppc64-linux.mh: Likewise.
* config/powerpc/spu-linux.mh: Likewise.
* config/s390/linux.mh: Likewise.
* config/sh/nbsd.mh: Likewise.
* config/sparc/fbsd.mh: Likewise.
* config/sparc/linux.mh: Likewise.
* config/sparc/linux64.mh: Likewise.
* config/sparc/nbsd64.mh: Likewise.
* config/sparc/nbsdelf.mh: Likewise.
* config/sparc/obsd64.mh: Likewise.
* config/sparc/sol2.mh: Likewise.
* config/tilegx/linux.mh: Likewise.
* config/vax/nbsdelf.mh: Likewise.
* config/vax/obsd.mh: Likewise.
* config/xtensa/linux.mh: Likewise.
* config/i386/i386gnu.mn: New file, with excerpts from
"config/i386/i386gnu.mh".
* configure: Regenerate.
* configure.ac: Rewrite code to use "gdb/configure.nat" instead of
*.mh files under "gdb/config".
* configure.nat: New file, with contents from the
"gdb/config/*/*.mh" files.
gdb/doc/ChangeLog:
2017-05-06 Sergio Durigan Junior <sergiodj@redhat.com>
* Makefile: Remove "@host_makefile_frag@".
Nick Clifton
GDB Administrator
John David Anglin
James Clarke
Eli Zaretskii
Igor Kudrin
H.J. Lu
Tom Tromey
Maciej W. Rozycki
Jose E. Marchesi
Claudiu Zissulescu
Kaz Kojima
Awson
Yao Qi
Andrew Goedhart
Alan Modra
Andreas Krebbel
Thomas Preud'homme
Alan Hayward
Sergio Durigan Junior