This makes ld warn about --plt-localentry if a version of glibc
without the necessary ld.so checks is detected, and revises the
documentation.
bfd/
* elf64-ppc.c (ppc64_elf_tls_setup): Warn on --plt-localentry
without ld.so checks.
gold/
* powerpc.cc (Target_powerpc::scan_relocs): Warn on --plt-localentry
without ld.so checks.
ld/
* ld.texinfo (plt-localentry): Revise.
The big comment in ppc64_elf_tls_setup says why. I've also added some
code to the bfd linker that catches the -lpthread -lc symbol
differences and disable generation of optimized call stubs even when
--plt-localentry is activated. Gold doesn't yet have that.
PR 21847
bfd/
* elf64-ppc.c (struct ppc_link_hash_entry): Add non_zero_localentry.
(ppc64_elf_merge_symbol): Set non_zero_localentry.
(is_elfv2_localentry0): Test non_zero_localentry.
(ppc64_elf_tls_setup): Default to --no-plt-localentry.
gold/
* powerpc.cc (Target_powerpc::scan_relocs): Default to
--no-plt-localentry.
ld/
* ld.texinfo (plt-localentry): Document.
The 64-bit ELF compression header has a reserved field. It should be
cleared to avoid random bits in it.
elfcpp/
PR gold/21857
* elfcpp.h (Chdr_write): Add put_ch_reserved.
(Chdr_write<64, true>::put_ch_reserved): New.
(Chdr_write<64, false>::put_ch_reserved): Likewise.
gold/
PR gold/21857
* compressed_output.cc (Output_compressed_section::set_final_data_size):
Call put_ch_reserved to clear the reserved field for 64-bit ELF.
* ldgram.y (ldgram_had_keep): Make static.
(ldgram_vers_current_lang): Likewise.
(filename_spec): New rule.
(input_section_spec_no_keep): Use filename_spec.
(wildcard_maybe_exclude): New rule.
(wildcard_spec): Rename to...
(section_name_spec): ...this.
(section_NAME_list): Rename to...
(section_name_list): ...this.
(section_name_spec): Simplifiy and use wildcard_maybe_exclude.
* ldlang.c (placed_commons): Delete.
(lang_add_wild): No longer set placed_commons.
(print_wild_statement): Use full names for SORT specifiers.
* testsuite/ld-scripts/align.exp: Run new tests.
* testsuite/ld-scripts/align3.d: New file.
* testsuite/ld-scripts/align3.t: New file.
* testsuite/ld-scripts/align4.d: New file.
* testsuite/ld-scripts/align4.t: New file.
* testsuite/ld-scripts/align5.d: New file.
* testsuite/ld-scripts/align5.t: New file.
* testsuite/ld-scripts/exclude-file-5.d: New file.
* testsuite/ld-scripts/exclude-file-5.map: New file.
* testsuite/ld-scripts/exclude-file-5.t: New file.
* testsuite/ld-scripts/exclude-file-6.d: New file.
* testsuite/ld-scripts/exclude-file-6.map: New file.
* testsuite/ld-scripts/exclude-file-6.t: New file.
* NEWS: Mention the changes.
PR 21840
* mach-o.c (bfd_mach_o_read_symtab_strtab): Fail if the symtab
size is -1.
* nlmcode.h (nlm_swap_auxiliary_headers_in): Replace assertion
with error return.
* section.c (bfd_make_section_with_flags): Fail if the name or bfd
are NULL.
* vms-alpha.c (bfd_make_section_with_flags): Correct computation
of end pointer.
(evax_bfd_print_emh): Check for invalid string lengths.
GCC 4.2 fails to compile "(uint64_t) 0x800080008000" with
error: integer constant is too large for ‘long’ type
This patch adds "llu" suffix to 0x800080008000 for GCC 4.2.
* mips.cc (Mips_relocate_functions): Add "llu" suffix to
0x800080008000.
Now, GDB is able to dynamically create i386-linux target descriptions
from features, instead of using pre-generated target descriptions. These
pre-generated target descriptions are no longer used by GDB (note that
they are still used by GDBserver).
This patch add a new maint command "maint check xml-descriptions" to test
dynamically generated tdesc are identical to these generated from xml files.
gdb:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* cli/cli-cmds.c (maintenancechecklist): New variable.
* gdbcmd.h (maintenancechecklist): Declare it.
* i386-linux-tdep.c (_initialize_i386_linux_tdep) [GDB_SELF_TEST]:
Call i386_linux_read_description with different masks.
* maint.c (maintenance_check_command): New function.
(_initialize_maint_cmds): Call add_prefix_cmd.
* target-descriptions.c (tdesc_reg): override operator != and ==.
(tdesc_type): Likewise.
(tdesc_feature): Likewise.
(target_desc): Likewise.
[GDB_SELF_TEST] (selftests::record_xml_tdesc): New function.
(maintenance_check_xml_descriptions): New function.
(_initialize_target_descriptions) Add command "xml-descriptions".
* target-descriptions.h (selftests::record_xml_tdesc): Declare.
gdb/testsuite:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* gdb.gdb/unittest.exp: Invoke command
"maintenance check xml-descriptions".
gdb/doc:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* gdb.texinfo (Maintenance Commands): Document command
"maint check xml-descriptions".
Instead of using pre-generated target descriptions, this patch
changes GDB to lazily and dynamically create target descriptions
according to the target hardware capability (xcr0 in i386).
This support any combination of target features.
Some reg in target description has "regnum" attribute, so its register
number is got from the attribute value instead from sequential allocation.
<reg name="xmm0" bitsize="128" type="vec128" regnum="32"/>
when target description is created, it should match the regnum, so this
patch adds a new field m_next_regnum to track it, if attribute number is
greater than the m_next_regnum, print the code to set register number
explicitly.
gdb:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* i386-linux-tdep.c: Don't include features/i386/i386-*linux.c.
Include features/i386/32bit-*.c.
(i386_linux_read_description): Generate target description if it
doesn't exist.
(_initialize_i386_linux_tdep): Don't call _initialize_tdesc_i386
functions.
* features/i386/32bit-linux.c: Re-generated.
* features/i386/32bit-sse.c: Likewise.
* target-descriptions.c (print_c_feature::visit): Print code to
set register number if needed.
(print_c_feature) <m_next_regnum>: New field.
This patch changes Makefile and command "maint print c-files" so
that GDB can print c files for features instead target description.
Previously, we feed GDB a target description xml file, which generate
c files including multiple features.
With this patch, in Makefile, we wrap each feature xml file, and
create a temp target description which include only one feature.
Then, adjust the target description printer for them, and print
a c function for each given feature, so that we can use these
c functions later to create target description in a flexible way.
gdb:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* features/Makefile (CFILES): Rename with TDESC_CFILES.
(FEATURE_XMLFILES): New.
(FEATURE_CFILES): New.
New rules.
(clean-cfiles): Remove generated c files.
* features/i386/32bit-avx.c: Generated.
* features/i386/32bit-avx512.c: Generated.
* features/i386/32bit-core.c: Generated.
* features/i386/32bit-linux.c: Generated.
* features/i386/32bit-mpx.c: Generated.
* features/i386/32bit-pkeys.c: Generated.
* features/i386/32bit-sse.c: Generated.
* target-descriptions.c: Include algorithm.
(tdesc_element_visitor): Add method visit_end.
(print_c_tdesc): Implement visit_end.
(print_c_tdesc:: m_filename_after_features): Move it to
protected.
(print_c_feature): New class.
(maint_print_c_tdesc_cmd): Use print_c_feature if XML file
name starts with "i386/32bit-".
This patch moves all the tdesc_i386*_linux target descriptions to a
function i386_linux_read_description, which returns the right target
description according to xcr0. This also remove the duplication in
getting target descriptions in corefile and native target.
gdb:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* i386-linux-tdep.c (i386_linux_read_description): New function.
(i386_linux_core_read_description): Call
i386_linux_read_description.
* i386-linux-tdep.h (i386_linux_read_description): Declare.
(tdesc_i386_linux, tdesc_i386_mmx_linux): Remove declarations.
(tdesc_i386_avx_linux, tdesc_i386_mpx_linux): Likewise
(tdesc_i386_avx_mpx_linux, tdesc_i386_avx_avx512_linux): Likewise.
(tdesc_i386_avx_mpx_avx512_pku_linux): Likewise.
* x86-linux-nat.c (x86_linux_read_description): Call
i386_linux_read_description.
Nowadays, we need two steps to print c files for xml target description,
that is, 1) read xml target description in, update the current tdesc,
2) visit the current tdesc, print the c file. It is unnecessary to
involve in current tdesc, and some validations in each gdbarch are
performed unnecessarily, which will reject some target descriptions if
they are missing some mandatory feature.
This patch adds an optional argument to "maint print c-tdesc", which
is an XML file target description, so that we can combine the two
steps above into one step, and don't have to involve in global current
tdesc.
gdb:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* NEWS: Mention it.
* features/Makefile (%.c: %.xml): Pass the xml file name to
command "maint print c-tdesc".
* target-descriptions.c (maint_print_c_tdesc_cmd): Get file
name from 'arg'.
gdb/doc:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* gdb.texinfo (Maintenance Commands): Document optional
argument of "maint print c-tdesc".
This patch adds ctor and dtor in target_desc.
gdb:
2017-07-26 Yao Qi <yao.qi@linaro.org>
* target-descriptions.c (target_desc): Add ctor and dtor. Do
in-class initialization.
(tdesc_create_feature): Call new instead of XCNEW.
(free_target_description): Ue delete.
I got confused by the result value of fast_tracepoint_collecting, while
it sounds like it would return true/false (whether the thread is
collecting or not), it actually returns:
0: not collecting
1: in the jump pad, before the relocated instruction
2: in the jump pad, at or after the relocated instruction
To avoid confusion, I think it would be nice to make it return an enum.
If you can help find a shorter but still relavant name, it would be
awesome. Otherwise, we'll go with that, fast_tpoint_collect_result,
which is at least consistent with the existing
fast_tpoint_collect_status.
gdb/gdbserver/ChangeLog:
* tracepoint.h (enum class fast_tpoint_collect_result): New
enumeration.
(fast_tracepoint_collecting): Change return type to
fast_tpoint_collect_result.
* tracepoint.c (fast_tracepoint_collecting): Likewise.
* linux-low.h: Include tracepoint.h.
(struct lwp_info) <collecting_fast_tracepoint>: Change type to
fast_tpoint_collect_result.
* linux-low.c (handle_tracepoints): Adjust.
(linux_fast_tracepoint_collecting): Change return type to
fast_tpoint_collect_result.
(maybe_move_out_of_jump_pad, linux_wait_for_event_filtered,
linux_wait_1, stuck_in_jump_pad_callback,
lwp_signal_can_be_delivered, linux_resume_one_lwp_throw,
proceed_one_lwp): Adjust to type change.
- Add the '-lkvm' library requirement for NetBSD/sparc64.
- Fix spelling of 'nbsdelf' host.
gdb/Changelog:
* configure.nat: Add "-lkvm" for NetBSD/sparc64 and fix typo.
PR 21555 is caused by the exception during the prologue analysis when re-set
a breakpoint.
(gdb) bt
#0 memory_error_message (err=TARGET_XFER_E_IO, gdbarch=0x153db50, memaddr=93824992233232) at ../../binutils-gdb/gdb/corefile.c:192
#1 0x00000000005718ed in memory_error (err=TARGET_XFER_E_IO, memaddr=memaddr@entry=93824992233232) at ../../binutils-gdb/gdb/corefile.c:220
#2 0x00000000005719d6 in read_memory_object (object=object@entry=TARGET_OBJECT_CODE_MEMORY, memaddr=93824992233232, memaddr@entry=1, myaddr=myaddr@entry=0x7fffffffd0a0 "P\333S\001", len=len@entry=1) at ../../binutils-gdb/gdb/corefile.c:259
#3 0x0000000000571c6e in read_code (len=1, myaddr=0x7fffffffd0a0 "P\333S\001", memaddr=<optimized out>) at ../../binutils-gdb/gdb/corefile.c:287
#4 read_code_unsigned_integer (memaddr=memaddr@entry=93824992233232, len=len@entry=1, byte_order=byte_order@entry=BFD_ENDIAN_LITTLE) at ../../binutils-gdb/gdb/corefile.c:362
#5 0x000000000041d4a0 in amd64_analyze_prologue (gdbarch=gdbarch@entry=0x153db50, pc=pc@entry=93824992233232, current_pc=current_pc@entry=18446744073709551615, cache=cache@entry=0x7fffffffd1e0) at ../../binutils-gdb/gdb/amd64-tdep.c:2310
#6 0x000000000041e404 in amd64_skip_prologue (gdbarch=0x153db50, start_pc=93824992233232) at ../../binutils-gdb/gdb/amd64-tdep.c:2459
#7 0x000000000067bfb0 in skip_prologue_sal (sal=sal@entry=0x7fffffffd4e0) at ../../binutils-gdb/gdb/symtab.c:3628
#8 0x000000000067c4d8 in find_function_start_sal (sym=sym@entry=0x1549960, funfirstline=1) at ../../binutils-gdb/gdb/symtab.c:3501
#9 0x000000000060999d in symbol_to_sal (result=result@entry=0x7fffffffd5f0, funfirstline=<optimized out>, sym=sym@entry=0x1549960) at ../../binutils-gdb/gdb/linespec.c:3860
....
#16 0x000000000054b733 in location_to_sals (b=b@entry=0x15792d0, location=0x157c230, search_pspace=search_pspace@entry=0x1148120, found=found@entry=0x7fffffffdc64) at ../../binutils-gdb/gdb/breakpoint.c:14211
#17 0x000000000054c1f5 in breakpoint_re_set_default (b=0x15792d0) at ../../binutils-gdb/gdb/breakpoint.c:14301
#18 0x00000000005412a9 in breakpoint_re_set_one (bint=bint@entry=0x15792d0) at ../../binutils-gdb/gdb/breakpoint.c:14412
This problem can be fixed by
- either each prologue analyzer doesn't throw exception,
- or catch the exception thrown from gdbarch_skip_prologue,
I choose the latter because the former needs to fix *every* prologue
analyzer to not throw exception.
This error can be reproduced by changing reread.exp. The test reread.exp
has already test that breakpoint can be reset correctly after the
executable is re-read. This patch extends this test by compiling test c
file with and without -fPIE.
(gdb) run ^M
The program being debugged has been started already.^M
Start it from the beginning? (y or n) y^M
x86_64/gdb/testsuite/outputs/gdb.base/reread/reread' has changed; re-reading symbols.
Error in re-setting breakpoint 1: Cannot access memory at address 0x555555554790^M
Error in re-setting breakpoint 2: Cannot access memory at address 0x555555554790^M
Starting program: /scratch/yao/gdb/build-git/x86_64/gdb/testsuite/outputs/gdb.base/reread/reread ^M
This is foo^M
[Inferior 1 (process 27720) exited normally]^M
(gdb) FAIL: gdb.base/reread.exp: opts= "-fPIE" "ldflags=-pie" : run to foo() second time (the program exited)
This patch doesn't re-indent the code, to keep the patch simple.
gdb:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR gdb/21555
* arch-utils.c (gdbarch_skip_prologue_noexcept): New function.
* arch-utils.h (gdbarch_skip_prologue_noexcept): Declare.
* infrun.c: Include arch-utils.h
(handle_step_into_function): Call gdbarch_skip_prologue_noexcept.
(handle_step_into_function_backward): Likewise.
* symtab.c (skip_prologue_sal): Likewise.
gdb/testsuite:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR gdb/21555
* gdb.base/reread.exp: Wrap the whole test with two kinds of
compilation flags, with -fPIE and without -fPIE.
GDB can fetch or store FPSCR on vfpv3, which has 32 VFP registers, but
fail to do so on vfpv2, which has 16 VFP registers. GDB code is incorrect
for vfpv2,
else if (tdep->vfp_register_count > 0
&& regno >= ARM_D0_REGNUM
&& regno <= ARM_D0_REGNUM + tdep->vfp_register_count)
while FPSCR register number is defined as ARM_D0_REGNUM + 32.
ARM_D0_REGNUM, /* VFP double-precision registers. */
ARM_D31_REGNUM = ARM_D0_REGNUM + 31,
ARM_FPSCR_REGNUM,
The code above uses "<=" rather than "<", in order to put FPSCR in the
range, but it is only correct when tdep->vfp_register_count is 32. On
vpfv2, it is 16, and FPSCR is out of the range, so fetch_vfp_regs or
store_vfp_regs are not called.
gdb:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR tdep/21717
* arm-linux-nat.c (arm_linux_fetch_inferior_registers): Update
condition for FPSCR.
(arm_linux_store_inferior_registers): Likewise.
PR 21824
* elf32-msp430.c (msp430_elf_relax_section): Allow conversion of
16-bit absolute branches into 10-bit pc-relative branches on the
MSP430 as well as the MSP430X.
Since the __tls_get_addr_opt stub saves LR and makes a call, eh_frame
info should be generated to describe how to unwind through the stub.
The patch also changes the way the backend iterates over stubs, from
looking at all sections in stub_bfd to which all dynamic sections are
attached as well, to iterating over the group list, which gets just
the stub sections. Most binaries will have just one or two stub
groups, so this is a little faster.
bfd/
* elf64-ppc.c (struct map_stub): Add tls_get_addr_opt_bctrl.
(stub_eh_frame_size): New function.
(ppc_size_one_stub): Set group tls_get_addr_opt_bctrl.
(group_sections): Init group tls_get_addr_opt_bctrl.
(ppc64_elf_size_stubs): Update sizing and initialization of
.eh_frame. Iteration over stubs via group list.
(ppc64_elf_build_stubs): Iterate over stubs via group list.
(ppc64_elf_finish_dynamic_sections): Update finalization of
.eh_frame.
ld/
* testsuite/ld-powerpc/tlsopt5.s: Add cfi.
* testsuite/ld-powerpc/tlsopt5.d: Update.
* testsuite/ld-powerpc/tlsopt5.wf: New file.
* testsuite/ld-powerpc/powerpc.exp: Perform new tlsopt5 test.
s390-vregs.exp yields a Tcl error:
ERROR: can't read "i": no such variable
while executing
"expr $a_high * ($i + 1) * $a_high "
(procedure "hex128" line 2)
invoked from within
"hex128 $a_high $a_low $b_high $b_low"
...
This is a regression, caused by commit 30a254669b16b8 -- "Don't always
zero pad in print_*_chars". That patch introduced a new procedure
"hex128" for formatting a 128-bit value as hex, but it accidentally moved
the calculation of the 128-bit value into that new procedure as well
instead of leaving it in the original context. This is fixed.
gdb/testsuite/ChangeLog:
* gdb.arch/s390-vregs.exp: Calculate parameters to hex128 in the
calling context.
(hex128): Drop erroneous calculation of parameters.
The bit pattern comment in "aarch64_opcode_lookup_1" is reversed.
This patch fixed this.
opcode/
* aarch64-gen.c (print_decision_tree_1): Reverse the index of PATTERN to
correct the print.
* aarch64-dis-2.c: Regenerated.
PR 21813
binutils* rddbg.c (read_symbol_stabs_debugging_info): Check for an empty
string whilst concatenating symbol names.
bfd * mach-o.c (bfd_mach_o_canonicalize_relocs): Pass the base address
of the relocs to the canonicalize_one_reloc routine.
* mach-o.h (struct bfd_mach_o_backend_data): Update the prototype
for the _bfd_mach_o_canonicalize_one_reloc field.
* mach-o-arm.c (bfd_mach_o_arm_canonicalize_one_reloc): Add
res_base parameter. Use to check for corrupt pair relocs.
* mach-o-aarch64.c (bfd_mach_o_arm64_canonicalize_one_reloc):
Likewise.
* mach-o-i386.c (bfd_mach_o_i386_canonicalize_one_reloc):
Likewise.
* mach-o-x86-64.c (bfd_mach_o_x86_64_canonicalize_one_reloc):
Likewise.
* vms-alpha.c (_bfd_vms_slurp_eihd): Make sure that there is
enough data in the record before attempting to parse it.
(_bfd_vms_slurp_eeom): Likewise.
(_bfd_vms_slurp_egsd): Check for an invalid section index.
(image_set_ptr): Likewise.
(alpha_vms_slurp_relocs): Likewise.
PR 21809
* config/tc-aarch64.c (aarch64_init_frag): Do not set a mapping
state for frags in debug sections.
* config/tc-arm.c (arm_init_frag): Likewise.
A set of small patches that are fixing big-endian observed errors.
ld/
2017-07-24 Claudiu Zissulescu <claziss@synopsys.com>
* testsuite/ld-arc/jli-overflow.d: Force testing for little
endian.
* testsuite/ld-arc/tls_gd-01.d: Fix string to match bigendian
systems.
* testsuite/ld-arc/tls_ie-01.d: Fix test for bigendian systems.
Trying to build (for mmix-knuth-mmixware but I don't think that
matters) yields the following (repeatable on e.g. CompileFarm gcc20
sporting gcc-4.7.2 as default):
gcc -DHAVE_CONFIG_H -I. -I/home/hp/binutils/src/gas -I. -I/home/hp/binutils/src/gas -I../bfd -I/home/hp/binutils/src/gas/config -I/home/hp/binutils/src/gas/../include -I/home/hp/binutils/src/gas/.. -I/home/hp/binutils/src/gas/../bfd -DLOCALEDIR="\"/usr/local/share/locale\"" -W -Wall -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Werror -Wwrite-strings -I/home/hp/binutils/src/gas/../zlib -g -O2 -MT dwarf2dbg.o -MD -MP -MF .deps/dwarf2dbg.Tpo -c -o dwarf2dbg.o /home/hp/binutils/src/gas/dwarf2dbg.c
cc1: warnings being treated as errors
/home/hp/binutils/src/gas/dwarf2dbg.c: In function 'dwarf2dbg_final_check':
/home/hp/binutils/src/gas/dwarf2dbg.c:2246: error: declaration of 'expr' shadows a global declaration
/home/hp/binutils/src/gas/expr.h:180: error: shadowed declaration is here
make[4]: *** [dwarf2dbg.o] Error 1
IIRC this is a false namespace clash and the warning is not observable
with a new-enough gcc. Committed as obvious.
brgds, H-P
PS. Idea: -Wcompiler; warn about constructs problematic with e.g. old gcc. 1/2 ;-)
My PPC64_OPT_LOCALENTRY patch of June 1, git commit f378ab099d, and
the later gold change, git commit 7ee7ff7015, added an insn in
__glink_PLTresolve which needs a corresponding adjustment in the
eh_frame info for asynchronous exceptions to unwind correctly.
It would have been OK for both ABIs to use +5 for the advance before
restore of LR, since we can put the DW_CFA_restore_extended on any
insn after the actual restore and before the r12/r0 copy is clobbered,
but it's slightly better to delay as much as possible. There are
then more addresses where fewer CFA program insns are executed.
bfd/
* elf64-ppc.c (ppc64_elf_size_stubs): Correct advance to
restore of LR.
gold/
* powerpc.cc (glink_eh_frame_fde_64v2): Correct advance to
restore of LR.
(glink_eh_frame_fde_64v1): Advance to restore of LR at latest
possible insn.
This changes struct catch_syscall_inferior_data to use a std::vector
rather than a VEC. It also changes it to be allocated with new and
destroyed with delete.
ChangeLog
2017-07-22 Tom Tromey <tom@tromey.com>
* break-catch-syscall.c (struct catch_syscall_inferior_data)
<syscalls_counts>: Now a std::vector.
(get_catch_syscall_inferior_data): Use "new".
(catch_syscall_inferior_data_cleanup): Use "delete".
(insert_catch_syscall, remove_catch_syscall)
(clear_syscall_counts): Update.
