This commit implements functions for identifying and extracting extended
ptrace event information from a Linux wait status. These are just
convenience functions intended to hide the ">> 16" used to extract the
event from the wait status word, replacing the hard-coded shift with a more
descriptive function call. This is preparatory work for implementation of
follow-fork and detach-on-fork for extended-remote linux targets.
gdb/ChangeLog:
* linux-nat.c (linux_handle_extended_wait): Call
linux_ptrace_get_extended_event.
(wait_lwp): Call linux_is_extended_waitstatus.
(linux_nat_filter_event): Call linux_ptrace_get_extended_event
and linux_is_extended_waitstatus.
* nat/linux-ptrace.c (linux_test_for_tracefork): Call
linux_ptrace_get_extended_event.
(linux_ptrace_get_extended_event): New function.
(linux_is_extended_waitstatus): New function.
* nat/linux-ptrace.h (linux_ptrace_get_extended_event)
(linux_is_extended_waitstatus): New declarations.
gdb/gdbserver/ChangeLog:
* linux-low.c (handle_extended_wait): Call
linux_ptrace_get_extended_event.
(get_stop_pc, get_detach_signal, linux_low_filter_event): Call
linux_is_extended_waitstatus.
---
bfd:
2014-09-19 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* elf32-s390.c: Don't replace R_390_TLS_LE32 with R_390_TLS_TPOFF
for PIE.
* elf64-s390.c: Don't replace R_390_TLS_LE64 with R_390_TLS_TPOFF
for PIE.
This patch is to extend dw2-var-zero-add.exp to cover the case that
partial symtabl is not used while full symtab is used, in order to
cover the changes in patch 2/3. This patch restarts GDB with
--readnow and does the same test again.
gdb/testsuite:
2014-09-19 Yao Qi <yao@codesourcery.com>
* gdb.dwarf2/dw2-var-zero-addr.exp: Move test into new proc test.
Invoke test. Restart GDB with --readnow and invoke test again.
I see the following fail on arm-none-eabi target,
(gdb) b 24^M
Breakpoint 1 at 0x4: file
../../../../git/gdb/testsuite/gdb.base/break-on-linker-gcd-function.cc,
line 24.^M
(gdb) FAIL: gdb.base/break-on-linker-gcd-function.exp: b 24
Currently, we are using flag has_section_at_zero to determine whether
address zero in debug info means the corresponding code has been
GC'ed, like this:
case DW_LNE_set_address:
address = read_address (abfd, line_ptr, cu, &bytes_read);
if (address == 0 && !dwarf2_per_objfile->has_section_at_zero)
{
/* This line table is for a function which has been
GCd by the linker. Ignore it. PR gdb/12528 */
However, this is incorrect on some bare metal targets, as .text
section is located at 0x0, so dwarf2_per_objfile->has_section_at_zero
is true. If a function is GC'ed by linker, the address is zero. GDB
thinks address zero is a function's address rather than this function
is GC'ed.
In this patch, we choose 'lowpc' got in read_file_scope to check
whether 'lowpc' is greater than zero. If it isn't, address zero really
means the function is GC'ed. In this patch, we pass 'lowpc' in
read_file_scope through handle_DW_AT_stmt_list and dwarf_decode_lines,
and to dwarf_decode_lines_1 finally.
This patch fixes the fail above. This patch also covers the path that
partial symbol isn't used, which is tested by starting gdb with
--readnow option.
It is regression tested on x86-linux with
target_board=dwarf4-gdb-index, and arm-none-eabi. OK to apply?
gdb:
2014-09-19 Yao Qi <yao@codesourcery.com>
* dwarf2read.c (dwarf_decode_lines): Update declaration.
(handle_DW_AT_stmt_list): Add argument 'lowpc'. Update
comments. Callers update.
(dwarf_decode_lines): Likewise.
(dwarf_decode_lines_1): Add argument 'lowpc'. Update
comments. Skip the line table if 'lowpc' is greater than
'address'. Don't check
dwarf2_per_objfile->has_section_at_zero.
gdb/testsuite:
2014-09-19 Yao Qi <yao@codesourcery.com>
* gdb.base/break-on-linker-gcd-function.exp: Move test into new
proc set_breakpoint_on_gcd_function. Invoke
set_breakpoint_on_gcd_function. Restart GDB with --readnow and
invoke set_breakpoint_on_gcd_function again.
2014-09-18 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
* testsuite/Makefile.am (plugin_test_10): New test.
* testsuite/Makefile.in: Regenerate
* testsuite/plugin_common_test_2.c (c1): Align to 8.
* testsuite/plugin_test_10.sh: New file.
since
5979d6b69bhttps://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=5979d6b69b20a8355ea94b75fad97415fce4788c
vdso handling
https://sourceware.org/ml/binutils/2014-03/msg00082.htmlhttps://sourceware.org/ml/binutils/2014-04/msg00003.html
Message-ID: <A78C989F6D9628469189715575E55B230AA884EB@IRSMSX104.ger.corp.intel.com>
I get on
kernel-3.16.2-200.fc20.x86_64
https://koji.fedoraproject.org/koji/buildinfo?buildID=575860
attaching its vdso.bin.gz
GDB (FSF HEAD 5e43d46791) regression:
reproducer:
./gdb -ex start ./gdb
actual result / FAIL:
Got object file from memory but can't read symbols: File truncated.
expected result / PASS:
<nothing>
or / PASS:
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
That "warning: Could not load shared library..." is mostly harmless (it is
a bug in GDB), in the FAIL case it is not printed just because
bfd_check_format() fails there.
It seems logical to me this way when the 'size' parameter has been already
added.
Alan Modra:
I was wrongly thinking that the section headers were
always last when I wrote that code. (They are now! If you relink
that vdso with current binutils master you won't hit this problem, but
that of course doesn't help existing kernels.)
I do not see a regression for add-symbol-file-from-memory for libncurses.so.5
from the original thread above.
Start of section headers: 1080 (bytes into file)
Size of section headers: 64 (bytes)
Number of section headers: 13
Section header string table index: 8
Section Headers:
[Nr] Name Type Address Off Size ES Flg Lk Inf Al
[ 8] .fake_shstrtab STRTAB 0000000000000780 000780 000076 00 A 0 0 32
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x0012fe 0x0012fe R E 0x1000
size == 0x2000
shdr_end == 0x778 == 1080 + 13 * 64
high_offset == 0x12fe
else if (size >= shdr_end)
- high_offset = shdr_end;
+ high_offset = size;
But then 0x778 < 0x780 for "Section header string table index" so whole
bfd_check_format() fails because section headers were not cleared here:
/* If the segments visible in memory didn't include the section headers,
then clear them from the file header. */
if (high_offset < shdr_end)
bfd/ChangeLog
2014-09-18 Jan Kratochvil <jan.kratochvil@redhat.com>
PR gdb/17407
* elfcode.h (bfd_from_remote_memory): Use SIZE for HIGH_OFFSET.
gold/ChangeLog:
2014-09-17 Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
* plugin.cc (Sized_pluginobj::do_add_symbols): Ignore isym->size.
* resolve.cc (Symbol_table::resolve): Don't override common symbols
during the replacement phase.
elfcpp/ChangeLog:
2014-09-17 Han Shen <shenhan@google.com>
* aarch64.h (R_AARCH64_TLS_DTPREL64): Switch enum value with ...
(R_AARCH64_TLS_DTPMOD64): ... enum value.
gold/ChangeLog:
2014-09-17 Han Shen <shenhan@google.com>
Jing Yu <jingyu@google.com>
* aarch64-reloc.def: Add TLSGD_ADR_PAGE21, TLSGD_ADD_LO12_NC,
TLSDESC_ADR_PAGE21, TLSDESC_LD64_LO12, TLSDESC_ADD_LO12, TLSDESC_CALL.
* aarch64.cc (Target_aarch64): Add data members
got_irelative_, got_tlsdesc_, rela_irelative_, got_mod_index_offset_,
tlsdesc_reloc_info_, tls_base_symbol_defined_. Initialize them in
constructor.
(Target_aarch64::do_reloc_symbol_index): New method.
(Target_aarch64::do_reloc_addend): New method.
(Target_aarch64::add_tlsdesc_info): New method.
(Target_aarch64::do_dynsym_value): New method.
(Target_aarch64::do_make_data_plt): Add new parameters: got,
got_irelative. Pass them to Output_data_plt_aarch64_standard.
(Target_aarch64::make_data_plt): Add new parameters: got,
got_irelative. Pass them to do_make_data_plt.
(Target_aarch64::Relocate): Add skip_call_tls_get_addr_ variable.
(Target_aarch64::Relocate:tls_gd_to_le): New method.
(Target_aarch64::Relocate:tls_ie_to_le): New method.
(Target_aarch64::Relocate:tls_desc_gd_to_le): New method.
(Target_aarch64::Relocate:tls_desc_gd_to_ie): New method.
(Target_aarch64::got_tlsdesc_section): New method.
(Target_aarch64::make_local_ifunc_plt_entry): New method.
(Target_aarch64::define_tls_base_symbol): New method.
(Target_aarch64::reserve_tlsdesc_entries): New method.
(Target_aarch64::got_mod_index_entry): New method.
(Target_aarch64::rela_tlsdesc_section): New method.
(Target_aarch64::rela_irelative_section): New method.
(Target_aarch64::Tlsdesc_info): New struct.
(Target_aarch64::got_section): Create .got.plt space for IRELATIVE
relocations and tlsdesc relocations.
(Target_aarch64::optimize_tls_reloc): Implement method.
(Output_data_plt_aarch64): Add member variables: tlsdesc_rel_, got_,
got_irelative_, irelative_count_, tlsdesc_got_offset_. Initialize them
in constructor.
(Output_data_plt_aarch64::reserve_tlsdesc_entry): New method.
(Output_data_plt_aarch64::has_tlsdesc_entry): New method.
(Output_data_plt_aarch64::get_tlsdesc_got_offset): New method.
(Output_data_plt_aarch64::get_tlsdesc_plt_offset): New method.
(Output_data_plt_aarch64::rela_tlsdesc): New method.
(Output_data_plt_aarch64::rela_irelative): New method.
(Output_data_plt_aarch64::entry_count): Count IRELATIVE relocations.
(Output_data_plt_aarch64::first_plt_entry_offset): Add const attribute.
(Output_data_plt_aarch64::get_plt_tlsdesc_entry_size): New method.
(Output_data_plt_aarch64::fill_tlsdesc_entry): New method.
(Output_data_plt_aarch64::do_get_plt_tlsdesc_entry_size): New method.
(Output_data_plt_aarch64::do_fill_tlsdesc_entry): New method.
(Output_data_plt_aarch64_standard): New member variables:
plt_tlsdesc_entry_size, tlsdesc_plt_entry.
(Output_data_plt_aarch64_standard::Output_data_plt_aarch64_standard):
New parameter: got, got_irelative.
(Output_data_plt_aarch64_standard::do_get_plt_entry_size): New method.
(Output_data_plt_aarch64_standard::do_fill_tlsdesc_entry): New method.
(Output_data_plt_aarch64::do_write): Replace got_address with
gotplt_address. Add irelative_count_ to count. Write tlsdesc entry.
(AArch64_relocate_functions::update_movnz): New method.
(AArch64_relocate_functions): Correct format.
(AArch64_relocate_functions::movnz): New method.
(Target_aarch64::Scan::local): Correct format. Move r_sym, got to
before the switch. Add new cases to switch.
Check ie_to_le relaxation on tlsie relocations. Add code handling
tlsgd tlsdesc cases.
(Target_aarch64::Scan::global): Move arp to front. Do copy_reloc when
needed. Add new cases to switch. Insert dynamic RELATIVE relocation
when needed. Add code handling tlsgd, tlsie, tlsdesc cases.
Call reloc_name_in_error_message to print unsupported reloc.
(Target_aarch64::make_plt_section): Pass got_ and got_irelative_ to
make_data_plt.
(Target_aarch64::do_finalize_sections): Emit relocs to save COPY
relocs. Fill in some more dynamic tags.
(Target_aarch64::Relocate::relocate): Handle tlsgd, tlsdesc relocs.
Skip call tls_get_addr when tlsgd is relaxed.
(Target_aarch64::Relocate::relocate_tls): Correct format. Add code
handling tlsgd, tlsdesc relocs, and tls gd->le, ie->le, tlsdesc->le,
tlsdesc->ie relaxation.
If accessing memory via safe_read_memory_integer fails, that function
used to print an error message even though callers were perfectly able
to handle (and even expected!) failures.
This patch removes the confusing message by changing the routine to
directly use target_read_memory.
gdb/ChangeLog:
PR gdb/17384
* corefile.c (struct captured_read_memory_integer_arguments): Remove.
(do_captured_read_memory_integer): Remove.
(safe_read_memory_integer): Use target_read_memory directly instead
of catching errors in do_captured_read_memory_integer.
This is just a testcase addition that I am proposing for upstream GDB.
We have this in our internal tree, and the related RH bug is:
<https://bugzilla.redhat.com/show_bug.cgi?id=809179>
(You might not be able to see all the comments without privileges.)
This bug is about a global variable that got incorrectly displayed by
GDB. This bug has already been fixed a long time ago by Joel's
commit:
commit 19630284f5
Author: Joel Brobecker <brobecker@gnat.com>
Date: Tue Jun 5 13:50:50 2012 +0000
But I think a testcase for it wouldn't hurt.
So, consider the following scenario:
$ cat solib1.c
int test;
void c_main (void)
{
test = 42;
}
$ cat solib2.c
int test;
void b_main (void)
{
test = 42;
}
$ cat main.c
int main (int argc, char *argv[])
{
c_main ();
b_main ();
return 0;
}
$ gcc -g -fPIC -shared -o libSO1.so -c solib1.c
$ gcc -g -fPIC -shared -o libSO2.so -c solib2.c
$ gcc -g -o main -L$PWD -lSO1 -lSO2 main.c
$ LD_LIBRARY_PATH=. gdb -q -batch -ex 'b c_main' -ex r -ex n -ex 'p test' ./main
...
$1 = 0
This happened with GDB before Joel's commit above. Now, things work
and GDB is able to correctly display the nested global variable:
$ LD_LIBRARY_PATH=. gdb -q -batch -ex 'b c_main' -ex r -ex n -ex 'p test' ./main
...
$1 = 42
The testcase attached tests this behavior.
gdb/testsuite/ChangeLog:
2014-09-16 Sergio Durigan Junior <sergiodj@redhat.com>
* gdb.base/global-var-nested-by-dso-solib1.c: New file.
* gdb.base/global-var-nested-by-dso-solib2.c: Likewise.
* gdb.base/global-var-nested-by-dso.c: Likewise.
* gdb.base/global-var-nested-by-dso.exp: Likewise.
In gdb/gdbserver/Makefile.in, IPAGENT_CFLAGS is defined using
an expression which references $(CPPFLAGS). But CPPFLAGS isn't
actually defined.
This patch first adds a CPPFLAGS definition, so as to inherit
the value passed at configure time (if any). And it then makes it
part of INTERNAL_CFLAGS_BASE, instead. There is no reason that
CPPFLAGS be useful for a certain class of source files, and not
the rest. This is also consistent with what's done in GDB.
gdb/gdbserver/ChangeLog:
* Makefile.in (CPPFLAGS): Define.
(INTERNAL_CFLAGS_BASE): Add ${CPPFLAGS}.
(IPAGENT_CFLAGS): Remove ${CPPFLAGS}.
Tested by rebuilding GDBserver with a dummy CPPFLAGS, and verifying
that the compilation command was altered as expected.
This obvious change removes dead code from objc-lang.c. I was
grepping for "fprintf (stderr..." and found this code between "#if
0".."#endif" blocks.
2014-09-16 Sergio Durigan Junior <sergiodj@redhat.com>
* objc-lang.c (find_implementation_from_class): Remove dead code.
This is an obvious replacement of "fprintf (stderr..." by
"fprintf_unfiltered (gdb_stdlog...", which is the standard to use in
these cases.
gdb/ChangeLog:
2014-09-16 Sergio Durigan Junior <sergiodj@redhat.com>
PR cli/7233
* linux-nat.c (linux_nat_wait_1): Replace "fprintf (stderr..." by
"fprintf_unfiltered (gdb_stdlog...)".
Make test messages unique and a couple other tweaks.
gdb/testsuite/
2014-09-16 Sergio Durigan Junior <sergiodj@redhat.com>
Pedro Alves <palves@redhat.com>
* gdb.base/watch-bitfields.exp: Pass string other than test file
name to prepare_for_testing.
(watch): New procedure.
(expect_watchpoint): Use with_test_prefix.
(top level): Factor out tests to ...
(test_watch_location, test_regular_watch): ... these new
procedures, and use with_test_prefix and gdb_continue_to_end.
PR 12526 reports that -location watchpoints against bitfield arguments
trigger false positives when bits around the bitfield, but not the
bitfield itself, are modified.
This happens because -location watchpoints naturally operate at the
byte level, not at the bit level. When the address of a bitfield
lvalue is taken, information about the bitfield (i.e. its offset and
size) is lost in the process.
This information must first be retained throughout the lifetime of the
-location watchpoint. This patch achieves this by adding two new
fields to the watchpoint struct: val_bitpos and val_bitsize. These
fields are set when a watchpoint is first defined in watch_command_1.
They are both equal to zero if the watchpoint is not a -location
watchpoint or if the argument is not a bitfield.
Then these bitfield parameters are used inside update_watchpoint and
watchpoint_check to extract the actual value of the bitfield from the
watchpoint address, with the help of a local helper function
extract_bitfield_from_watchpoint_value.
Finally when creating a HW breakpoint pointing to a bitfield, we
optimize the address and length of the breakpoint. By skipping over
the bytes that don't cover the bitfield, this step reduces the
frequency at which a read watchpoint for the bitfield is triggered.
It also reduces the number of times a false-positive call to
check_watchpoint is triggered for a write watchpoint.
gdb/
PR breakpoints/12526
* breakpoint.h (struct watchpoint): New fields val_bitpos and
val_bitsize.
* breakpoint.c (watch_command_1): Use these fields to retain
bitfield information.
(extract_bitfield_from_watchpoint_value): New function.
(watchpoint_check): Use it.
(update_watchpoint): Use it. Optimize the address and length of a
HW watchpoint pointing to a bitfield.
* value.h (unpack_value_bitfield): New prototype.
* value.c (unpack_value_bitfield): Make extern.
gdb/testsuite/
PR breakpoints/12526
* gdb.base/watch-bitfields.exp: New file.
* gdb.base/watch-bitfields.c: New file.
"target vxworks" and friends have been removed 10 years ago already:
commit e84ecc995d
Author: Andrew Cagney <cagney@redhat.com>
AuthorDate: Sat Nov 13 23:10:02 2004 +0000
2004-11-13 Andrew Cagney <cagney@gnu.org>
* configure.tgt: Delete i[34567]86-*-vxworks*, m68*-netx-*,
m68*-*-vxworks*, mips*-*-vxworks*, powerpc-*-vxworks*, and
sparc-*-vxworks*.
* NEWS: Mention that vxworks was deleted.
(...)
* remote-vxmips.c, remote-vx.c: Delete.
* remote-vx68.c: Delete.
(...)
This removes related leftover cruft from the manual.
gdb/doc/
2014-09-16 Pedro Alves <palves@redhat.com>
* gdb.texinfo (Starting) <run command>: Don't mention VxWorks.
(Embedded OS): Remove VxWorks menu entry.
(VxWorks): Remove node.
GDB has a function named "current_inferior" and gdbserver has a global
variable named "current_inferior", but the two are not equivalent;
indeed, gdbserver does not have any real equivalent of what GDB calls
an inferior. What gdbserver's "current_inferior" is actually pointing
to is a structure describing the current thread. This commit renames
current_inferior as current_thread in gdbserver to clarify this. It
also renames the function "set_desired_inferior" to "set_desired_thread"
and renames various local variables from foo_inferior to foo_thread.
gdb/gdbserver/ChangeLog:
* inferiors.h (current_inferior): Renamed as...
(current_thread): New variable. All uses updated.
* linux-low.c (get_pc): Renamed saved_inferior as saved_thread.
(maybe_move_out_of_jump_pad): Likewise.
(cancel_breakpoint): Likewise.
(linux_low_filter_event): Likewise.
(wait_for_sigstop): Likewise.
(linux_resume_one_lwp): Likewise.
(need_step_over_p): Likewise.
(start_step_over): Likewise.
(linux_stabilize_threads): Renamed save_inferior as saved_thread.
* linux-x86-low.c (x86_linux_update_xmltarget): Likewise.
* proc-service.c (ps_lgetregs): Renamed reg_inferior as reg_thread
and save_inferior as saved_thread.
* regcache.c (get_thread_regcache): Renamed saved_inferior as
saved_thread.
(regcache_invalidate_thread): Likewise.
* remote-utils.c (prepare_resume_reply): Likewise.
* thread-db.c (thread_db_get_tls_address): Likewise.
(disable_thread_event_reporting): Likewise.
(remove_thread_event_breakpoints): Likewise.
* tracepoint.c (gdb_agent_about_to_close): Renamed save_inferior
as saved_thread.
* target.h (set_desired_inferior): Renamed as...
(set_desired_thread): New declaration. All uses updated.
* server.c (myresume): Updated comment to reference thread instead
of inferior.
(handle_serial_event): Likewise.
(handle_target_event): Likewise.
Silly typo...
gdb/testsuite/
2014-09-16 Pedro Alves <palves@redhat.com>
* gdb.base/watchpoint-stops-at-right-insn.exp (test): Compare
software and hardware addresses, not software address against
itself.
This adds a test that makes sure GDB knows whether the target has
continuable, or non-continuable watchpoints.
That is, the test confirms that GDB presents a watchpoint value change
at the first instruction right after the instruction that changes
memory.
gdb/testsuite/ChangeLog:
2014-09-16 Pedro Alves <palves@redhat.com>
* gdb.base/watchpoint-stops-at-right-insn.c: New file.
* gdb.base/watchpoint-stops-at-right-insn.exp: New file.
different architecture tags. Add a test case to make sure that this works,
and update readelf so that it will not seg-fault when trying to display the
attributes of binaries with invalid architecture tags.
* elf32-arm.c (elf32_arm_merge_eabi_attributes): Return false if
failed to merge.
* ld-arm/attr-merge-arch-2.d: New test case.
* ld-arm/attr-merge-arch-2a.s: New test case source file.
* ld-arm/attr-merge-arch-2b.s: Likewise.
* ld-arm/arm-elf.exp: Run new test case.
* readelf.c (display_arm_attribute): Use unsigned int type for
tag, val and type variables.
In the recent review to my patch about copying files to remote host,
we find that we need a board file which is more closely mapped real
remote host testing to improve coverage. With the board file
local-remote-host-native.exp, DejaGNU copies files to
$build/gdb/testsuite/remote-host to emulate the effect of remote host.
Is it OK?
gdb/testsuite:
2014-09-16 Yao Qi <yao@codesourcery.com>
* boards/local-remote-host-native.exp: New file.
Refactor each relaxation pattern to raise the maintainability.
In origin, all patterns is analysed in nds32_elf_relax_section,
so it is hard to debug and maintain. Therefore, we classify all
patterns into different functions in this patch.
Moreover, we adjust all optimizations into nds32_elf_relax_section
to take these optimizations in turn. This can promise all relaxation
being done after calling gld${EMULATION_NAME}_after_allocation.
First, add nds32 audio ISA extension including opcodes and registers.
Second, redesign the disassemble implement.
The original disassemble decode instruction opcode using switch-case.
It is hard to synchronize when adding new instructions.
Therefore, the new implement reuses nds32_opcodes to dump the instructions.
gdb:
2014-08-13 Omair Javaid <omair.javaid@linaro.org>
* arm-tdep.c (arm_record_vdata_transfer_insn): Added record handler for
vector data transfer instructions.
(arm_record_coproc_data_proc): Updated.
gdb:
2014-08-13 Omair Javaid <omair.javaid@linaro.org>
* arm-tdep.c (arm_record_coproc_data_proc): Add record handler stubs
for asimd, vfp and coprocessor insns.
(arm_record_asimd_vfp_coproc): Add record handler for asimd, vfp
and coprocessor insns.
(thumb2_record_coproc_insn): New function.
(thumb2_record_decode_insn_handler): Update coprocessor insns record
handlers.
(decode_insn): Install arm_record_asimd_vfp_coproc as handler for
opcode 110 insns.
bfd/
* aoutx.h (NAME (aout, machine_type)): Add mips32r6 and mips64r6.
* archures.c (bfd_architecture): Likewise.
* bfd-in2.h (bfd_architecture): Likewise.
(bfd_reloc_code_real): Add relocs BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3 and
BFD_RELOC_MIPS_19_PCREL_S2.
* cpu-mips.c (arch_info_struct): Add mips32r6 and mips64r6.
* elf32-mips.c: Define relocs R_MIPS_PC21_S2, R_MIPS_PC26_S2
R_MIPS_PC18_S3, R_MIPS_PC19_S2, R_MIPS_PCHI16 and R_MIPS_PCLO16.
(mips_reloc_map): Add entries for BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
BFD_RELOC_LO16_PCREL.
* elf64-mips.c: Define REL, and RELA relocations R_MIPS_PC21_S2,
R_MIPS_PC26_S2, R_MIPS_PC18_S3, R_MIPS_PC19_S2, R_MIPS_PCHI16
and R_MIPS_PCLO16.
(mips_reloc_map): Add entries for BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
BFD_RELOC_LO16_PCREL.
* elfn32-mips.c: Likewise.
* elfxx-mips.c (MIPSR6_P): New define.
(mipsr6_exec_plt_entry): New array.
(hi16_reloc_p): Add support for R_MIPS_PCHI16.
(lo16_reloc_p): Add support for R_MIPS_PCLO16.
(aligned_pcrel_reloc_p): New function.
(mips_elf_relocation_needs_la25_stub): Add support for relocs:
R_MIPS_PC21_S2 and R_MIPS_PC26_S2.
(mips_elf_calculate_relocation): Add support for relocs:
R_MIPS_PC21_S2, R_MIPS_PC26_S2, R_MIPS_PC18_S3, R_MIPS_PC19_S2,
R_MIPS_PCHI16 and R_MIPS_PCLO16.
(_bfd_elf_mips_mach): Add support for mips32r6 and mips64r6.
(mips_elf_add_lo16_rel_addend): Add support for R_MIPS_PCHI16.
(_bfd_mips_elf_check_relocs): Add support for relocs:
R_MIPS_PC21_S2 and R_MIPS_PC26_S2.
(_bfd_mips_elf_relocate_section): Add a check for unaligned
pc relative relocs.
(_bfd_mips_elf_finish_dynamic_symbol): Add support for MIPS r6
plt entry.
(mips_set_isa_flags): Add support for mips32r6 and mips64r6.
(_bfd_mips_elf_print_private_bfd_data): Likewise.
(mips_32bit_flags_p): Add support for mips32r6.
* libbfd.h (bfd_reloc_code_real_names): Add entries for
BFD_RELOC_MIPS_21_PCREL_S2, BFD_RELOC_MIPS_26_PCREL_S2,
BFD_RELOC_MIPS_18_PCREL_S3 and BFD_RELOC_MIPS_19_PCREL_S2.
* reloc.c: Document relocs BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3 and
BFD_RELOC_MIPS_19_PCREL_S2.
binutils/
* readelf.c (get_machine_flags): Add support for mips32r6 and
mips64r6.
elfcpp/
* mips.h (E_MIPS_ARCH_32R6, E_MIPS_ARCH_64R6): New enum constants.
gas/
* config/tc-mips.c (mips_nan2008): New static global.
(mips_flag_nan2008): Removed.
(LL_SC_FMT): New define.
(COP12_FMT): Updated.
(ISA_IS_R6): New define.
(ISA_HAS_64BIT_REGS): Add mips64r6.
(ISA_HAS_DROR): Likewise.
(ISA_HAS_64BIT_FPRS): Add mips32r6 and mips64r6.
(ISA_HAS_ROR): Likewise.
(ISA_HAS_ODD_SINGLE_FPR): Likewise.
(ISA_HAS_MXHC1): Likewise.
(hilo_interlocks): Likewise.
(md_longopts): Likewise.
(ISA_HAS_LEGACY_NAN): New define.
(options): Add OPTION_MIPS32R6 and OPTION_MIPS64R6.
(mips_ase): Add field rem_rev.
(mips_ases): Updated to add which ISA an ASE was removed in.
(mips_isa_rev): Add support for mips32r6 and mips64r6.
(mips_check_isa_supports_ase): Add support to check if an ASE
has been removed in the specified MIPS ISA revision.
(validate_mips_insn): Skip '-' character.
(macro_build): Likewise.
(mips_check_options): Prevent R6 working with fp32, mips16,
micromips, or branch relaxation.
(file_mips_check_options): Set R6 floating point registers to
64 bit. Also deal with the nan2008 option.
(limited_pcrel_reloc_p): Add relocs: BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
BFD_RELOC_LO16_PCREL.
(operand_reg_mask): Add support for OP_SAME_RS_RT, OP_CHECK_PREV
and OP_NON_ZERO_REG.
(match_check_prev_operand): New static function.
(match_same_rs_rt_operand): New static function.
(match_non_zero_reg_operand): New static function.
(match_operand): Added entries for: OP_SAME_RS_RT, OP_CHECK_PREV
and OP_NON_ZERO_REG.
(insns_between): Added case to deal with forbidden slots.
(append_insn): Added support for relocs: BFD_RELOC_MIPS_21_PCREL_S2
and BFD_RELOC_MIPS_26_PCREL_S2.
(match_insn): Add support for operands -A, -B, +' and +". Also
skip '-' character.
(mips_percent_op): Add entries for %pcrel_hi and %pcrel_lo.
(md_parse_option): Add support for mips32r6 and mips64r6. Also
update the nan option handling.
(md_pcrel_from): Add cases for relocs: BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2.
(mips_force_relocation): Prevent forced relaxation for MIPS r6.
(md_apply_fix): Add support for relocs: BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
BFD_RELOC_LO16_PCREL.
(s_mipsset): Add support for mips32r6 and mips64r6.
(s_nan): Update to support the new nan2008 framework.
(tc_gen_reloc): Add relocs: BFD_RELOC_MIPS_21_PCREL_S2,
BFD_RELOC_MIPS_26_PCREL_S2, BFD_RELOC_MIPS_18_PCREL_S3,
BFD_RELOC_MIPS_19_PCREL_S2, BFD_RELOC_HI16_S_PCREL and
BFD_RELOC_LO16_PCREL.
(mips_elf_final_processing): Updated to use the mips_nan2008.
(mips_cpu_info_table): Add entries for mips32r6 and mips64r6.
(macro): Enable ldc2, sdc2, ll, lld, swc2, sc, scd, cache, pref
macros for R6.
(mips_fix_adjustable): Make PC relative R6 relocations relative
to the symbol and not the section.
* configure.ac: Add support for mips32r6 and mips64r6.
* configure: Regenerate.
* doc/c-mips.texi: Document the -mips32r6 and -mips64r6 command line
options.
* doc/as.texinfo: Likewise.
gas/testsuite/
* gas/mips/24k-triple-stores-1.s: If testing for r6 prevent
non-supported instructions from being tested.
* gas/mips/24k-triple-stores-2.s: Likewise.
* gas/mips/24k-triple-stores-3.s: Likewise.
* gas/mips/24k-triple-stores-6.s: Likewise.
* gas/mips/beq.s: Likewise.
* gas/mips/eva.s: Likewise.
* gas/mips/ld-zero-3.s: Likewise.
* gas/mips/mips32-cp2.s: Likewise.
* gas/mips/mips32.s: Likewise.
* gas/mips/mips4.s: Likewise.
* gas/mips/add.s: Don't test the add instructions if r6, and
add padding.
* gas/mips/add.d: Check for a triple dot not a nop at the end of the
disassembly output.
* gas/mips/micromips@add.d: Likewise.
* gas/mips/mipsr6@24k-branch-delay-1.d: New file.
* gas/mips/mipsr6@24k-triple-stores-1.d: New file.
* gas/mips/mipsr6@24k-triple-stores-2-llsc.d: New file.
* gas/mips/mipsr6@24k-triple-stores-2.d: New file.
* gas/mips/mipsr6@24k-triple-stores-3.d: New file.
* gas/mips/mipsr6@24k-triple-stores-6.d: New file.
* gas/mips/mipsr6@add.d: New file.
* gas/mips/mipsr6@attr-gnu-4-1-msingle-float.l: New file.
* gas/mips/mipsr6@attr-gnu-4-1-msingle-float.s: New file.
* gas/mips/mipsr6@attr-gnu-4-1-msoft-float.l: New file.
* gas/mips/mipsr6@attr-gnu-4-1-msoft-float.s: New file.
* gas/mips/mipsr6@attr-gnu-4-2-mdouble-float.l: New file.
* gas/mips/mipsr6@attr-gnu-4-2-mdouble-float.s: New file.
* gas/mips/mipsr6@beq.d: New file.
* gas/mips/mipsr6@bge.d: New file.
* gas/mips/mipsr6@bgeu.d: New file.
* gas/mips/mipsr6@blt.d: New file.
* gas/mips/mipsr6@bltu.d: New file.
* gas/mips/mipsr6@branch-misc-1.d: New file.
* gas/mips/mipsr6@branch-misc-2-64.d: New file.
* gas/mips/mipsr6@branch-misc-2pic-64.d: New file.
* gas/mips/mipsr6@branch-misc-4-64.d: New file.
* gas/mips/mipsr6@cache.d: New file.
* gas/mips/mipsr6@eva.d: New file.
* gas/mips/mipsr6@jal-svr4pic-noreorder.d: New file.
* gas/mips/mipsr6@jal-svr4pic.d: New file.
* gas/mips/mipsr6@ld-zero-2.d: New file.
* gas/mips/mipsr6@ld-zero-3.d: New file.
* gas/mips/mipsr6@loc-swap-dis.d: New file.
* gas/mips/mipsr6@mips32-cp2.d: New file.
* gas/mips/mipsr6@mips32-imm.d: New file.
* gas/mips/mipsr6@mips32.d: New file.
* gas/mips/mipsr6@mips32r2.d: New file.
* gas/mips/mipsr6@mips4-fp.d: New file.
* gas/mips/mipsr6@mips4-fp.l: New file.
* gas/mips/mipsr6@mips4-fp.s: New file.
* gas/mips/mipsr6@mips4.d: New file.
* gas/mips/mipsr6@mips5-fp.d: New file.
* gas/mips/mipsr6@mips5-fp.l: New file.
* gas/mips/mipsr6@mips5-fp.s: New file.
* gas/mips/mipsr6@mips64.d: New file.
* gas/mips/mipsr6@msa-branch.d: New file.
* gas/mips/mipsr6@msa.d: New file.
* gas/mips/mipsr6@pref.d: New file.
* gas/mips/mipsr6@relax-swap3.d: New file.
* gas/mips/r6-64-n32.d: New file.
* gas/mips/r6-64-n64.d: New file.
* gas/mips/r6-64-removed.l: New file.
* gas/mips/r6-64-removed.s: New file.
* gas/mips/r6-64.s: New file.
* gas/mips/r6-attr-none-double.d: New file.
* gas/mips/r6-n32.d: New file.
* gas/mips/r6-n64.d: New file.
* gas/mips/r6-removed.l: New file.
* gas/mips/r6-removed.s: New file.
* gas/mips/r6.d: New file.
* gas/mips/r6.s: New file.
* gas/mips/mipsr6@mips32-dsp.d: New file.
* gas/mips/mipsr6@mips32-dspr2.d: New file.
* gas/mips/mipsr6@mips32r2-ill.l: New file.
* gas/mips/mipsr6@mips32r2-ill.s: New file.
* gas/mips/cache.s: Add r6 instruction varients.
* gas/mips/mips.exp: Add support for the mips32r6 and mips64r6
architectures. Also prevent non r6 supported tests from running.
Finally, add in support for running the new r6 tests.
(run_dump_test_arch): Add support for mipsr6 tests.
(run_list_test_arch): Add support for using files of the
form arch@testname.l .
include/elf/
* mips.h: Add relocs: R_MIPS_PC21_S2, R_MIPS_PC26_S2, R_MIPS_PC18_S3,
R_MIPS_PC19_S2, R_MIPS_PCHI16 and R_MIPS_PCLO16.
(E_MIPS_ARCH_32R6): New define.
(E_MIPS_ARCH_64R6): New define.
include/opcode/
* mips.h (mips_operand_type): Add new entries: OP_SAME_RS_RT,
OP_CHECK_PREV and OP_NON_ZERO_REG. Add descriptions for the MIPS R6
instruction arguments: -a, -b, -d, -s, -t, -u, -v, -w, -x, -y, -A, -B,
+I, +O, +R, +:, +\, +", +;
(mips_check_prev_operand): New struct.
(INSN2_FORBIDDEN_SLOT): New define.
(INSN_ISA32R6): New define.
(INSN_ISA64R6): New define.
(INSN_UPTO32R6): New define.
(INSN_UPTO64R6): New define.
(mips_isa_table): Add INSN_UPTO32R6 and INSN_UPTO64R6.
(ISA_MIPS32R6): New define.
(ISA_MIPS64R6): New define.
(CPU_MIPS32R6): New define.
(CPU_MIPS64R6): New define.
(cpu_is_member): Add cases for CPU_MIPS32R6, and CPU_MIPS64R6.
ld/
* ldmain.c (get_emulation): Add support for -mips32r6 and -mips64r6.
opcodes/
* mips-dis.c (mips_arch_choices): Add entries for mips32r6 and
mips64r6.
(parse_mips_dis_option): Allow MSA and virtualization support for
mips64r6.
(mips_print_arg_state): Add fields dest_regno and seen_dest.
(mips_seen_register): New function.
(print_insn_arg): Refactored code to use mips_seen_register
function. Add support for OP_SAME_RS_RT, OP_CHECK_PREV and
OP_NON_ZERO_REG. Changed OP_REPEAT_DEST_REG case to print out
the register rather than aborting.
(print_insn_args): Add length argument. Add code to correctly
calculate the instruction address for pc relative instructions.
(validate_insn_args): New static function.
(print_insn_mips): Prevent jalx disassembling for r6. Use
validate_insn_args.
(print_insn_micromips): Use validate_insn_args.
all the arguments are valid.
* mips-formats.h (PREV_CHECK): New define.
* mips-opc.c (decode_mips_operand): Add support for -a, -b, -d, -s,
-t, -u, -v, -w, -x, -y, -A, -B, +I, +O, +R, +:, +\, +", +;
(RD_pc): New define.
(FS): New define.
(I37): New define.
(I69): New define.
(mips_builtin_opcodes): Add MIPS R6 instructions. Exclude recoded
MIPS R6 instructions from MIPS R2 instructions.
The test does a backtrace to see which thread (#2 or #3) is assigned
to which SIGUSR (1 or 2). If the main thread gets to all_threads_running
before the sigusr threads get to their entry point, then the function
name isn't in the backtrace and the test fails.
Alas this version of the code is within epsilon of what I started with,
and then over-simplified things.
If I want to change the signalled state of multiple threads
it's a bit cumbersome to do with the "signal" command.
What you really want is a way to set the signal state of the
desired threads and then just do "continue".
This patch adds a new command, queue-signal, to accomplish this.
Basically "signal N" == "queue-signal N" + "continue".
That's not precisely true in that "signal" can be used to inject
any signal, including signals set to "nopass"; whereas "queue-signal"
just queues the signal as if the thread stopped because of it.
"nopass" handling is done when the thread is resumed which
"queue-signal" doesn't do.
One could add extra complexity to allow queue-signal to be used to
deliver "nopass" signals like the "signal" command. I have no current
need for it so in the interests of incremental complexity, I have
left such support out and just have the code flag an error if one
tries to queue a nopass signal.
gdb/ChangeLog:
* NEWS: Mention new "queue-signal" command.
* infcmd.c (queue_signal_command): New function.
(_initialize_infcmd): Add new queue-signal command.
gdb/doc/ChangeLog:
* gdb.texinfo (Signaling): Document new queue-signal command.
gdb/testsuite/ChangeLog:
* gdb.threads/queue-signal.c: New file.
* gdb.threads/queue-signal.exp: New file.
Alan Modra
Joel Brobecker
Don Breazeal
Andreas Krebbel
Yao Qi
Rafael Ávila de Espíndola
Doug Evans
Jan Kratochvil
Cary Coutant
Jing Yu
Ulrich Weigand
Tristan Gingold
Sergio Durigan Junior
Maciej W. Rozycki
Patrick Palka
Ilya Tocar
Pedro Alves
Gary Benson
Samuel Thibault
Terry Guo
Kuan-Lin Chen
Omair Javaid
H.J. Lu
Chen Gang
Andrew Bennett
Matthew Fortune
Doug Evans