The idea of this change is to make -t output useful for users wanting
to package all the object files involved in linking for a bug report.
Something like the following should do the trick.
gcc hello.c -save-temps -Wl,-t | xargs realpath | sort | uniq > files
tar cJf test.tar.xz `cat files`
* ldlang.c (load_symbols): When -t, print file names for script
files and archives.
* ldmain.c (trace_files): Make an int.
(add_archive_element): Print archive elements only with multiple
-t options, or when archive is thin.
* ldmain.h (trace_files): Update.
* ldmisc.c (vfinfo): Don't print both original path and path in
sysroot.
* lexsup.c (parse_args <t>): Increment trace_files.
This output really belongs in ld --verbose.
* ldmain.c (main): Print emulation mode and "deleting executable"
for --verbose, not --trace.
(add_archive_element): Only print "no new IR symbols" for --verbose.
Prepending '/' to absolute paths doesn't gain us much, and results in
the current implementation of --trace emitting silly path-in-sysroot
output, eg.
/lib/ld-linux-x86-64.so.2 (//lib/ld-linux-x86-64.so.2)
* ldmain.c (get_sysroot): Return "" for "--sysroot=/".
This file was never supposed to be widely used. The fact that it has
found its way into many gas files led to bugs, typically when code
expecting a symbolS* to point at a struct symbol is presented with a
struct local_symbol. Also, commit 158184ac9e changed these structs in
2012 but didn't catch all places where symbol bsym was being used to
test for a local_symbol.
* Makefile.am (HFILES): Delete struc-symbol.h.
* doc/internals.texi: Delete struc-symbol.h reference and out
of date local symbol description.
* struc-symbol.h: Delete. Move contents to..
* symbols.c: ..here.
(symbol_on_chain, symbol_symbolS): New functions.
* symbols.h (symbol_on_chain, symbol_symbolS): Declare.
* cgen.c: Don't #include struc-symbol.h.
(gas_cgen_parse_operand): Don't test for local_symbol using
bsym, instead call symbol_symbolS. Use symbol_get_bfdsym.
(weak_operand_overflow_check, make_right_shifted_expr): Use
symbol accessors.
* config/obj-coff.c: Don't #include struc-symbol.h.
(GET_FILENAME_STRING): Delete.
* config/obj-elf.c: Don't #include struc-symbol.h.
(elf_file_symbol): Use symbol accessors.
(elf_adjust_symtab): Call symbol_on_chain.
* config/obj-evax.c: Don't #include struc-symbol.h.
* config/tc-nds32.c: Likewise.
* config/tc-rl78.c: Likewise.
* config/tc-rx.c: Likewise.
* config/tc-alpha.c: Likewise.
(add_to_link_pool, s_alpha_comm): Use symbol accessors.
* config/tc-arc.c: Don't #include struc-symbol.h.
(arc_check_relocs): Use symbol accessors, testing gas symbol
section rather than bfd symbol section.
* config/tc-avr.c: Don't #include struc-symbol.h.
(avr_patch_gccisr_frag): Use symbol accessors.
* config/tc-bfin.c: Don't #include struc-symbol.h.
(bfin_loop_beginend): Use symbol accessors.
* config/tc-csky.c: Don't #include struc-symbol.h.
(v2_work_movih, v2_work_ori): Use symbol accessors. Check for
absolute symbol as well as O_constant.
* config/tc-riscv.c: Don't #include struc-symbol.h.
(riscv_pre_output_hook): Use symbol accessors.
* config/tc-s390.c: Don't #include struc-symbol.h.
(s390_literals): Use symbol accessors.
* config/tc-score.c (s3_build_la_pic, s3_build_lwst_pic): Use
symbol accessors.
(s3_relax_branch_inst16, s3_relax_cmpbranch_inst32): Don't
test symbol bsym.
* config/tc-score7.c: Don't #include struc-symbol.h.
(s7_build_la_pic, s7_build_lwst_pic): Use symbol accessors.
(s7_b32_relax_to_b16): Don't test symbol bsym.
* config/tc-sh.c: Don't #include struc-symbol.h.
(insert_loop_bounds): Use symbol accessors.
(sh_frob_section): Remove bogus symbol canonicalization.
* config/tc-tic54x.c: Don't #include struc-symbol.h.
(tic54x_bss): Use symbol accessors.
* config/tc-tilegx.c: Don't #include struc-symbol.h.
(emit_tilegx_instruction, tilegx_parse_name): Use symbol accessors.
* config/tc-tilepro.c: Don't #include struc-symbol.h.
(emit_tilepro_instruction, tilepro_parse_name): Use accessors.
* config/tc-xtensa.c: Don't #include struc-symbol.h.
(xg_assemble_vliw_tokens): Use symbol accessors.
(xg_order_trampoline_chain): Likewise.
* ehopt.c: Don't #include struc-symbol.h.
(check_eh_frame): Correct local symbol test. Use symbol accessors.
* write.c: Don't #include struc-symbol.h.
(create_note_reloc, maybe_generate_build_notes): Use symbol accessors.
* Makefile.in: Regenerate.
* po/POTFILES.in: Regenerate.
For ld -r, we generally set the VMA of sections to zero. This is done
to make the output of ld -r most similar to that output by the
assembler, which generally has sections starting at VMA zero. In some
cases that covers for backend bugs which would mis-handle relocatable
object files with non-zero section VMAs.
This patch fixes a few sections that didn't have zero VMAs for ld -r.
A missing zero on .note.gnu.build-id and .eh_frame_hdr doesn't matter
much since these are linker generated symbols only output on final
link, but it's good to be consistent.
* Makefile.am (ei386beos.c, ei386go32.c): Correct dependencies.
* Makefile.in: Regenerate.
* scripttempl/elf.sc (.note.gnu.build-id, .eh_frame_hdr): Set
address with ${RELOCATING-0}.
* scripttempl/arclinux.sc: Likewise.
* scripttempl/armbpabi.sc: Likewise.
* scripttempl/avr.sc: Likewise.
* scripttempl/elf64hppa.sc: Likewise.
* scripttempl/elf_chaos.sc: Likewise.
* scripttempl/elfarc.sc: Likewise.
* scripttempl/elfxtensa.sc: Likewise.
* scripttempl/mep.sc: Likewise.
* scripttempl/nds32elf.sc: Likewise.
* scripttempl/pru.sc: Likewise.
* scripttempl/elf32msp430.sc: Likewise, and for other sections.
* scripttempl/epiphany_4x4.sc: Similarly.
Commit f19c7ff839 added a new member to the
prefixes array which included a use of the symbol AF_LOCAL. Unfortunately,
not all systems declare this symbol. This change only compiles the "unix:"
member if the system knows about AF_LOCAL.
gdb/ChangeLog:
* configure.ac: New test HAVE_AF_LOCAL
* common/netstuff.c (parse_connection_spec) [prefixes]: Only compile "unix:"
if HAVE_AF_LOCAL is true.
* configure: regenerate.
* config.in: regenerate.
In this commit:
commit ee67fd7f3f
Date: Thu Oct 25 12:03:31 2018 +0100
gdb/riscv: Use correct regnum in riscv_linux_nat_target::fetch_registers
I incorrectly removed a set of braces in violation of the GDB coding
standard. This commit adds them back.
gdb/ChangeLog:
* riscv-linux-nat.c (riscv_linux_nat_target::fetch_registers):
Add missing braces. No functional change.
Local symbols don't have a sy_frag field.
PR 23837
* config/tc-hppa.c: Don't include struc-symbol.h.
(pa_build_unwind_subspace): Call get_symbol_frag rather than
referencing sy_frag.
Rather than have some local logic to throw an error for an unrecognized option,
use the new cli-utils.h function throwing an error.
At the same time, fix some wrong indentation in info_macro_command
and fix a small bug in 'demangle' error handling:
Without the patch:
(gdb) demangle -L c++ abcd
Unrecognized option 'c++' to demangle command. Try "help demangle".
(gdb)
With the patch:
(gdb) demangle -L c++ abcd
Unrecognized option '-L' to demangle command. Try "help demangle".
2018-10-27 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* macrocmd.c (info_macro_command): Use report_unrecognized_option_error
to report a bad option and fix indentation.
* demangle.c (demangle_command): Use report_unrecognized_option_error
to report a bad option and correctly report the bad option.
Recent versions of macOS have a feature called System Integrity
Protection. Among other things, This feature prevents ptrace from
tracing certain programs --- for example, the programs in /bin, which
includes typical shells.
This means that startup-with-shell does not work properly. This is PR
cli/23364. Currently there is a workaround in gdb to disable
startup-with-shell when this feature might be in use.
This patch changes gdb to be a bit more precise about when
startup-with-shell will not work, by checking whether the shell
executable is restricted.
If the shell is restricted, then this patch will also cause gdb to
cache a copy of the shell in the gdb cache directory, and then reset
the SHELL environment variable to point to this copy. This lets
startup-with-shell work again.
Tested on High Sierra by trying to start a program using redirection,
and by running startup-with-shell.exp.
gdb/ChangeLog
2018-10-27 Tom Tromey <tom@tromey.com>
PR cli/23364:
* darwin-nat.c (copied_shell): New global.
(may_have_sip): Rename from should_disable_startup_with_shell.
(copy_shell_to_cache, maybe_cache_shell): New functions.
(darwin_nat_target::create_inferior): Update. Use
copied_shell.
The current callers of mkostemp close the file descriptor and then
re-open it with fopen. It seemed better to me to continue to use the
already-opened file descriptor, so this patch rearranges the code a
little in order to do so. It takes care to ensure that the files are
only unlinked after the file descriptor in question is closed, as
before.
gdb/ChangeLog
2018-10-27 Tom Tromey <tom@tromey.com>
* unittests/scoped_fd-selftests.c (test_to_file): New function.
(run_tests): Call test_to_file.
* dwarf-index-write.c (write_psymtabs_to_index): Do not reopen
temporary files.
* common/scoped_fd.h (scoped_fd::to_file): New method.
I noticed that gdb could leak file descriptors coming from mkstemp.
This patch fixes the problem by importing the gnulib mkostemp instead,
and then changing gdb to pass O_CLOEXEC.
A small gnulib patch was needed. This has already been accepted
upstream.
gdb/ChangeLog
2018-10-27 Tom Tromey <tom@tromey.com>
* unittests/scoped_mmap-selftests.c (test_normal): Use
gdb_mkostemp_cloexec.
* unittests/scoped_fd-selftests.c (test_destroy, test_release):
Use gdb_mkostemp_cloexec.
* gnulib/aclocal-m4-deps.mk, gnulib/aclocal.m4,
gnulib/config.in, gnulib/configure,
gnulib/import/Makefile.am, gnulib/import/Makefile.in,
gnulib/import/m4/gnulib-cache.m4,
gnulib/import/m4/gnulib-comp.m4: Update.
* gnulib/import/m4/mkostemp.m4: New file.
* gnulib/import/m4/mkstemp.m4: Remove.
* gnulib/import/mkostemp.c: New file.
* gnulib/import/mkstemp.m4: Remove.
* gnulib/update-gnulib.sh (IMPORTED_GNULIB_MODULES): Remove
mkstemp, add mkostemp. Apply new patch.
* gnulib/import/stdlib.in.h: Apply patch.
* gnulib/patches/0002-mkostemp-mkostemps-Fix-compilation-error-in-C-mode-o.patch:
New file.
* dwarf-index-write.c (write_psymtabs_to_index): Use
gdb_mkostemp_cloexec.
* common/filestuff.h (gdb_mkostemp_cloexec): New function.
This moves mkdir_recursive from dwarf-index-cache.c to
common/filestuff.c, and also changes it to return a boolean that says
whether or not it worked.
gdb/ChangeLog
2018-10-27 Tom Tromey <tom@tromey.com>
* unittests/mkdir-recursive-selftests.c: New file.
* Makefile.in (SUBDIR_UNITTESTS_SRCS): Add
unittests/mkdir-recursive-selftests.c.
* dwarf-index-cache.c (mkdir_recursive): Move to
common/filestuff.c.
(index_cache::store): Check return value of mkdir_recursive.
(create_dir_and_check, test_mkdir_recursive): Move to new file.
(_initialize_index_cache): Don't register test.
* common/filestuff.h (mkdir_recursive): Declare.
* common/filestuff.c (mkdir_recursive): Move from
dwarf-index-cache.c. Return bool.
Currently make_temp_filename is a function local to
write_psymtabs_to_index. This patch moves it to pathstuff.c so that
it can be used from other places in gdb.
gdb/ChangeLog
2018-10-27 Tom Tromey <tom@tromey.com>
* dwarf-index-write.c (write_psymtabs_to_index): Move
make_temp_filename to common/pathstuff.c.
* common/pathstuff.h (make_temp_filename): Declare.
* common/pathstuff.c (make_temp_filename): New function, moved
from dwarf-index-write.c.
I noticed several places in gdb that were using getenv("SHELL") and
then falling back to "/bin/sh" if it returned NULL. This unifies
these into a single function.
gdb/ChangeLog
2018-10-27 Tom Tromey <tom@tromey.com>
* procfs.c (procfs_target::create_inferior): Use get_shell.
* cli/cli-cmds.c (shell_escape): Use get_shell.
* windows-nat.c (windows_nat_target::create_inferior): Use
get_shell.
* common/pathstuff.c (get_shell): New function.
* nat/fork-inferior.c (SHELL_FILE, get_startup_shell): Remove.
(fork_inferior): Use get_shell.
* common/pathstuff.h (get_shell): Declare.
In the 'info -q -t' patch series, I started a new test from
gdb.threads/threadapply.exp, that uses an obsolete way to do
runto_main.
This patch changes all occurrences of runto_main using gdb_suppress_tests
to use instead fail+return.
Note that there are still about 220 occurrences of gdb_suppress_tests
but unclear (to me) if these can be similarly trivially be replaced by a
fail+return. Further cleanup can be done in follow-up patches.
Tests run on Debian/x86_64.
gdb/testsuite/ChangeLog
2018-10-27 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* gdb.arch/altivec-regs.exp: Do not use gdb_suppress_tests in
runto_main, use fail + return instead.
gdb.arch/amd64-byte.exp: Likewise.
gdb.arch/amd64-dword.exp: Likewise.
gdb.arch/amd64-word.exp: Likewise.
gdb.arch/e500-abi.exp: Likewise.
gdb.arch/e500-regs.exp: Likewise.
gdb.arch/gdb1291.exp: Likewise.
gdb.arch/gdb1431.exp: Likewise.
gdb.arch/i386-avx.exp: Likewise.
gdb.arch/i386-byte.exp: Likewise.
gdb.arch/i386-prologue.exp: Likewise.
gdb.arch/i386-sse.exp: Likewise.
gdb.arch/i386-word.exp: Likewise.
gdb.arch/iwmmxt-regs.exp: Likewise.
gdb.arch/pa-nullify.exp: Likewise.
gdb.arch/powerpc-prologue.exp: Likewise.
gdb.arch/s390-tdbregs.exp: Likewise.
gdb.arch/vsx-regs.exp: Likewise.
gdb.asm/asm-source.exp: Likewise.
gdb.base/auxv.exp: Likewise.
gdb.base/bigcore.exp: Likewise.
gdb.base/overlays.exp: Likewise.
gdb.base/savedregs.exp: Likewise.
gdb.base/setshow.exp: Likewise.
gdb.base/sigaltstack.exp: Likewise.
gdb.base/sigbpt.exp: Likewise.
gdb.base/siginfo-addr.exp: Likewise.
gdb.base/siginfo-obj.exp: Likewise.
gdb.base/siginfo-thread.exp: Likewise.
gdb.base/siginfo.exp: Likewise.
gdb.base/signull.exp: Likewise.
gdb.base/sigrepeat.exp: Likewise.
gdb.base/structs2.exp: Likewise.
gdb.threads/threadapply.exp: Likewise.
gdb.threads/watchthreads.exp: Likewise.
gdb.threads/watchthreads2.exp: Likewise.
Add a test case for info args|functions|locals|variables [-q] [-t TYPEREGEXP] [NAMEREGEXP]
gdb/testsuite/ChangeLog
2018-10-27 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* gdb.base/info_qt.c: New file.
* gdb.base/info_qt.exp: New file.
Announce changes in NEWS to info [args|functions|locals|variables]
gdb/ChangeLog
2018-10-27 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* NEWS: Mention changes to 'info [args|functions|locals|variables]'
Document changes to info [args|functions|locals|variables]
gdb/doc/ChangeLog
2018-10-27 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* gdb.texinfo (Information About a Frame): Document changes
to 'info args' and 'info locals'.
(Examining the Symbol Table): Document changes to 'info functions'
and 'info variables'.
Add [-q] [-t TYPEREGEXP] [NAMEREGEXP] args to info [args|functions|locals|variables]
Main changes are:
* stack.c: Add two regexp preg and treg to print_variable_and_value_data
and used them inside do_print_variable_and_value to filter the
variables to print.
* symtab.h: Add a new function bool treg_matches_sym_type_name, that
factorises type matching logic.
* symtab.c: Add type/name matching logic to 'info functions|variables'.
* stack.c : Add type/name matching logic to 'info args|locals'.
gdb/ChangeLog
2018-10-27 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* stack.c (print_variable_and_value_data): Add preg and treg.
(print_frame_local_vars): Add quiet, regexp and t_regexp arguments,
and update callers.
(print_frame_arg_vars): Likewise.
(prepare_reg): New function.
(info_locals_command): Extract info print args and use them.
(info_args_command): Likewise.
(_initialize_stack): Modify on-line help.
* symtab.c (treg_matches_sym_type_name): New function.
(search_symbols): New arg t_regexp.
(symtab_symbol_info): New args quiet, regexp, t_regexp.
(info_variables_command): Extract info print args and use them.
(info_functions_command): Likewise.
(info_types_command): Update call to symtab_symbol_info.
(_initialize_symtab): Modify on-line help.
* symtab.h (treg_matches_sym_type_name): New function.
(search_symbols): New t_regexp arg.
New cli-utils.h/.c function extract_info_print_args factorizes
the extraction of the args '[-q] [-t TYPEREGEXP] [NAMEREGEXP]'.
New cli-utils.h/.c function report_unrecognized_option_error
factorizes reporting an unknown option for a command.
These functions will be used by the commands
info [args|functions|locals|variables]
As extract_info_print_args will be used for 'info functions|variables' which
already have the NAMEREGEXP arg, it provides a backward compatible
behaviour.
cli-utils.c has a new static function extract_arg_maybe_quoted
that extracts an argument, possibly quoted. The behaviour of this
function is similar to the parsing done by gdb_argv.
gdb/ChangeLog
2018-10-27 Philippe Waroquiers <philippe.waroquiers@skynet.be>
* cli-utils.c (extract_arg_maybe_quoted): New function.
(extract_info_print_args): New function.
(info_print_args_help): New function.
(report_unrecognized_option_error): New function.
* cli-utils.h (extract_arg_maybe_quoted): New function.
(extract_info_print_args): New function.
(info_print_args_help): New function.
(report_unrecognized_option_error): New function.
This removes a couple of DEF_VECs from symtab.h, replacing them with
std::vector at the points of use.
gdb/ChangeLog
2018-10-26 Tom Tromey <tom@tromey.com>
* dwarf2read.c (recursively_compute_inclusions): Use std::vector.
(compute_compunit_symtab_includes): Update.
* symtab.h: (symtab_ptr): Remove typedef. Don't define a VEC.
(compunit_symtab_ptr): Likewise.
Previously, default_print_auxv_entry was called for any auxv entries
without a known AT_FREEBSD_* tag. However, this resulted in false
positive matches when FreeBSD added a new tag that has an existing
AT_* tag with a different meaning. Instead, only call
default_print_auxv_entry for specific tag values for which FreeBSD
matches the default AT_* values.
gdb/ChangeLog:
* fbsd-tdep.c (fbsd_print_auxv_entry): Only use
default_print_auxv_entry for specific tag values.
Add support for recognizing signal trampolines, parsing the signal frame,
and reading register values from it.
gdb/
* riscv-linux-tdep.c: Include tramp-frame.h and trad-frame.h.
(riscv_linux_sigframe_init): Declare.
(RISCV_INST_LI_A7_SIGRETURN, RISCV_INT_ECALL): New.
(riscv_linux_sigframe): New.
(SIGFRAME_SIGINFO_SIZE, UCONTEXT_MCONTEXT_OFFSET): New.
(riscv_linux_sigframe_init): Define.
(riscv_linux_init_abi): Call tramp_frame_prepend_unwinder.
Make riscv_isa_flen available to the linux native code, and clean up duplicate
comments.
gdb/
* riscv-tdep.c (riscv_isa_xlen): Refer to riscv-tdep.h comment.
(riscv_isa_flen): Likewise. Drop static.
* riscv-tdep.h (riscv_isa_xlen): Move riscv-tdep.c comment to here.
(riscv_isa_flen): Likewise.
This patch adds support for Hardware Transactional Memory registers
for the powerpc linux native and core file targets, and for the
pwoerpc linux server stub.
These registers include both the HTM special-purpose registers (TFHAR,
TEXASR and TFIAR) as well as the set of registers that are
checkpointed (saved) when a transaction is initiated, which the
processor restores in the event of a transaction failure.
The set of checkpointed general-purpose registers is returned by the
linux kernel in the same format as the regular general-purpose
registers, defined in struct pt_regs. However, the architecture
specifies that only some of the registers present in pt_regs are
checkpointed (GPRs 0-31, CR, XER, LR and CTR). The kernel fills the
slots for MSR and NIP with other info. The other fields usually don't
have meaningful values. GDB doesn't define registers that are not
checkpointed in the architecture, but when generating a core file, GDB
fills the slot for the checkpointed MSR with the regular MSR. These
are usually similar, although some bits might be different, and in
some cases the checkpointed MSR will have a value of 0 in a
kernel-generated core-file. The checkpointed NIP is filled with TFHAR
by GDB in the core-file, which is what the kernel does. The other
fields are set to 0 by GDB.
Core files generated by the kernel have a note section for
checkpointed GPRs with the same size for both 32-bit and 64-bit
threads, and the values for the registers of a 32-bit thread are
squeezed in the first half, with no useful data in the second half.
GDB generates a smaller note section for 32-bit threads, but can read
both sizes.
The checkpointed XER is required to be 32-bit in the target
description documentation, even though the more recent ISAs define it
as 64-bit wide, since the high-order 32-bits are reserved, and because
in Linux there is no way to get a 64-bit checkpointed XER for 32-bit
threads. If this changes in the future, the target description
feature requirement can be relaxed to allow for a 64-bit checkpointed
XER.
Access to the checkpointed CR (condition register) can be confusing.
The architecture only specifies that CR fields 1 to 7 (the 24 least
significant bits) are checkpointed, but the kernel provides all 8
fields (32 bits). The value of field 0 is not masked by ptrace, so it
will sometimes show the result of some kernel operation, probably
treclaim., which sets this field.
The checkpointed registers are marked not to be saved and restored.
Inferior function calls during an active transaction don't work well,
and it's unclear what should be done in this case. TEXASR and TFIAR
can be altered asynchronously, during transaction failure recording,
so they are also not saved and restored. For consistency neither is
TFHAR.
Record and replay also doesn't work well when transactions are
involved. This patch doesn't address this, so the values of the HTM
SPRs will sometimes be innacurate when the record/relay target is
enabled. For instance, executing a "tbegin." alters TFHAR and TEXASR,
but these changes are not currently recorded.
Because the checkpointed registers are only available when a
transaction is active (or suspended), ptrace can return ENODATA when
gdb tries to read these registers and the inferior is not in a
transactional state. The registers are set to the unavailable state
when this happens. When gbd tries to write to one of these registers,
and it is unavailable, an error is raised.
The "fill" functions for checkpointed register sets in the server stub
are not implemented for the same reason as for the EBB register set,
since ptrace can also return ENODATA for checkpointed regsets. The
same issues with 'G' packets apply here.
Just like for the EBB registers, tracepoints will not mark the
checkpointed registers as unavailable if the inferior was not in a
transaction, so their content will also show 0 instead of
<unavailable> when inspecting trace data.
The new tests record the values of the regular registers before
stepping the inferior through a "tbegin." instruction to start a
transaction, then the checkpointed registers are checked against the
recorded pre-transactional values. New values are written to the
checkpointed registers and recorded, the inferior continues until the
transaction aborts (which is usually immediately when it is resumed),
and the regular registers are checked against the recorded values,
because the abort should have reverted the registers to these values.
Like for the EBB registers, target_store_registers will ignore the
checkpointed registers when called with -1 as the regno
argument (store all registers in one go).
gdb/ChangeLog:
2018-10-26 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* arch/ppc-linux-tdesc.h (tdesc_powerpc_isa207_htm_vsx32l)
(tdesc_powerpc_isa207_htm_vsx64l): Declare.
* arch/ppc-linux-common.h (PPC_LINUX_SIZEOF_TM_SPRREGSET)
(PPC32_LINUX_SIZEOF_CGPRREGSET, PPC64_LINUX_SIZEOF_CGPRREGSET)
(PPC_LINUX_SIZEOF_CFPRREGSET, PPC_LINUX_SIZEOF_CVMXREGSET)
(PPC_LINUX_SIZEOF_CVSXREGSET, PPC_LINUX_SIZEOF_CPPRREGSET)
(PPC_LINUX_SIZEOF_CDSCRREGSET, PPC_LINUX_SIZEOF_CTARREGSET):
Define.
(struct ppc_linux_features) <htm>: New field.
(ppc_linux_no_features): Add initializer for htm field.
* arch/ppc-linux-common.c (ppc_linux_match_description): Return
new tdescs.
* nat/ppc-linux.h (PPC_FEATURE2_HTM, NT_PPC_TM_CGPR)
(NT_PPC_TM_CFPR, NT_PPC_TM_CVMX, NT_PPC_TM_CVSX)
(NT_PPC_TM_SPR, NT_PPC_TM_CTAR, NT_PPC_TM_CPPR, NT_PPC_TM_CDSCR):
Define if not already defined.
* features/Makefile (WHICH): Add rs6000/powerpc-isa207-htm-vsx32l
and rs6000/powerpc-isa207-htm-vsx64l.
(XMLTOC): Add rs6000/powerpc-isa207-htm-vsx32l.xml and
rs6000/powerpc-isa207-htm-vsx64l.xml.
* features/rs6000/power-htm-spr.xml: New file.
* features/rs6000/power-htm-core.xml: New file.
* features/rs6000/power64-htm-core.xml: New file.
* features/rs6000/power-htm-fpu.xml: New file.
* features/rs6000/power-htm-altivec.xml: New file.
* features/rs6000/power-htm-vsx.xml: New file.
* features/rs6000/power-htm-ppr.xml: New file.
* features/rs6000/power-htm-dscr.xml: New file.
* features/rs6000/power-htm-tar.xml: New file.
* features/rs6000/powerpc-isa207-htm-vsx32l.xml: New file.
* features/rs6000/powerpc-isa207-htm-vsx64l.xml: New file.
* features/rs6000/powerpc-isa207-htm-vsx32l.c: Generate.
* features/rs6000/powerpc-isa207-htm-vsx64l.c: Generate.
* regformats/rs6000/powerpc-isa207-htm-vsx32l.dat: Generate.
* regformats/rs6000/powerpc-isa207-htm-vsx64l.dat: Generate.
* ppc-linux-nat.c (fetch_register, fetch_ppc_registers): Call
fetch_regset with HTM regsets.
(store_register, store_ppc_registers): Call store_regset with HTM
regsets.
(ppc_linux_nat_target::read_description): Set htm field in the
features struct if needed.
* ppc-linux-tdep.c: Include
features/rs6000/powerpc-isa207-htm-vsx32l.c and
features/rs6000/powerpc-isa207-htm-vsx64l.c.
(ppc32_regmap_tm_spr, ppc32_regmap_cgpr, ppc64_le_regmap_cgpr)
(ppc64_be_regmap_cgpr, ppc32_regmap_cfpr, ppc32_le_regmap_cvmx)
(ppc32_be_regmap_cvmx, ppc32_regmap_cvsx, ppc32_regmap_cppr)
(ppc32_regmap_cdscr, ppc32_regmap_ctar): New globals.
(ppc32_linux_tm_sprregset, ppc32_linux_cgprregset)
(ppc64_be_linux_cgprregset, ppc64_le_linux_cgprregset)
(ppc32_linux_cfprregset, ppc32_le_linux_cvmxregset)
(ppc32_be_linux_cvmxregset, ppc32_linux_cvsxregset)
(ppc32_linux_cpprregset, ppc32_linux_cdscrregset)
(ppc32_linux_ctarregset): New globals.
(ppc_linux_cgprregset, ppc_linux_cvmxregset): New functions.
(ppc_linux_collect_core_cpgrregset): New function.
(ppc_linux_iterate_over_regset_sections): Call back with the htm
regsets.
(ppc_linux_core_read_description): Check if the tm spr section is
present and set htm in the features struct.
(_initialize_ppc_linux_tdep): Call
initialize_tdesc_powerpc_isa207_htm_vsx32l and
initialize_tdesc_powerpc_isa207_htm_vsx64l.
* ppc-linux-tdep.h (ppc_linux_cgprregset, ppc_linux_cvmxregset):
Declare.
(ppc32_linux_tm_sprregset, ppc32_linux_cfprregset)
(ppc32_linux_cvsxregset, ppc32_linux_cpprregset)
(ppc32_linux_cdscrregset, ppc32_linux_ctarregset): Declare.
* ppc-tdep.h (struct gdbarch_tdep) <have_htm_spr, have_htm_core>:
New fields.
<have_htm_fpu, have_htm_altivec, have_htm_vsx>:
Likewise.
<ppc_cppr_regnum, ppc_cdscr_regnum, ppc_ctar_regnum>: Likewise.
<ppc_cdl0_regnum, ppc_cvsr0_regnum, ppc_cefpr0_regnum>: Likewise.
(enum) <PPC_TFHAR_REGNUM, PPC_TEXASR_REGNUM, PPC_TFIAR_REGNUM>:
New enum fields.
<PPC_CR0_REGNUM, PPC_CCR_REGNUM, PPC_CXER_REGNUM>: Likewise.
<PPC_CLR_REGNUM, PPC_CCTR_REGNUM, PPC_CF0_REGNUM>: Likewise.
<PPC_CFPSCR_REGNUM, PPC_CVR0_REGNUM, PPC_CVSCR_REGNUM>: Likewise.
<PPC_CVRSAVE_REGNUM, PPC_CVSR0_UPPER_REGNUM>: Likewise.
<PPC_CPPR_REGNUM, PPC_CDSCR_REGNUM>: Likewise.
<PPC_CTAR_REGNUM>: Likewise.
(PPC_IS_TMSPR_REGNUM, PPC_IS_CKPTGP_REGNUM, PPC_IS_CKPTFP_REGNUM)
(PPC_IS_CKPTVMX_REGNUM, PPC_IS_CKPTVSX_REGNUM): Define.
* rs6000-tdep.c (IS_CDFP_PSEUDOREG, IS_CVSX_PSEUDOREG)
(IS_CEFP_PSEUDOREG): Define.
(rs6000_register_name): Hide the upper halves of checkpointed VSX
registers. Return names for the checkpointed DFP, VSX, and EFP
pseudo registers.
(rs6000_pseudo_register_type): Remove initial assert and raise an
internal error in the else clause instead. Return types for the
checkpointed DFP, VSX, and EFP pseudo registers.
(dfp_pseudo_register_read, dfp_pseudo_register_write): Handle
checkpointed DFP pseudo registers.
(vsx_pseudo_register_read, vsx_pseudo_register_write): Handle
checkpointed VSX pseudo registers.
(efp_pseudo_register_read, efp_pseudo_register_write): Rename
from efpr_pseudo_register_read and
efpr_pseudo_register_write. Handle checkpointed EFP pseudo
registers.
(rs6000_pseudo_register_read, rs6000_pseudo_register_write):
Handle checkpointed DFP, VSX, and EFP registers.
(dfp_ax_pseudo_register_collect, vsx_ax_pseudo_register_collect)
(efp_ax_pseudo_register_collect): New functions.
(rs6000_ax_pseudo_register_collect): Move DFP, VSX and EFP pseudo
register logic to new functions. Handle checkpointed DFP, VSX,
and EFP pseudo registers.
(rs6000_gdbarch_init): Look for and validate the htm features.
Include checkpointed DFP, VSX and EFP pseudo-registers.
* NEWS: Mention access to PPR, DSCR, TAR, EBB/PMU registers and
HTM registers.
gdb/gdbserver/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* configure.srv (ipa_ppc_linux_regobj): Add
powerpc-isa207-htm-vsx32l-ipa.o and
powerpc-isa207-htm-vsx64l-ipa.o.
(powerpc*-*-linux*): Add powerpc-isa207-htm-vsx32l.o and
powerpc-isa207-htm-vsx64l.o to srv_regobj. Add
rs6000/power-htm-spr.xml, rs6000/power-htm-core.xml,
rs6000/power64-htm-core.xml, rs6000/power-htm-fpu.xml,
rs6000/power-htm-altivec.xml, rs6000/power-htm-vsx.xml,
rs6000/power-htm-ppr.xml, rs6000/power-htm-dscr.xml,
rs6000/power-htm-tar.xml, rs6000/powerpc-isa207-htm-vsx32l.xml,
and rs6000/powerpc-isa207-htm-vsx64l.xml to srv_xmlfiles.
* linux-ppc-tdesc-init.h (enum ppc_linux_tdesc)
<PPC_TDESC_ISA207_HTM_VSX>: New enum value.
(init_registers_powerpc_isa207_htm_vsx32l)
(init_registers_powerpc_isa207_htm_vsx64l): Declare.
* linux-ppc-low.c (ppc_fill_tm_sprregset, ppc_store_tm_sprregset)
(ppc_store_tm_cgprregset, ppc_store_tm_cfprregset)
(ppc_store_tm_cvrregset, ppc_store_tm_cvsxregset)
(ppc_store_tm_cpprregset, ppc_store_tm_cdscrregset)
(ppc_store_tm_ctarregset): New functions.
(ppc_regsets): Add entries for HTM regsets.
(ppc_arch_setup): Set htm in features struct when needed. Set
sizes for the HTM regsets.
(ppc_get_ipa_tdesc_idx): Return PPC_TDESC_ISA207_HTM_VSX.
(initialize_low_arch): Call
init_registers_powerpc_isa207_htm_vsx32l and
init_registers_powerpc_isa207_htm_vsx64l.
* linux-ppc-ipa.c (get_ipa_tdesc): Handle
PPC_TDESC_ISA207_HTM_VSX.
(initialize_low_tracepoint): Call
init_registers_powerpc_isa207_htm_vsx32l and
init_registers_powerpc_isa207_htm_vsx64l.
gdb/testsuite/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* gdb.arch/powerpc-htm-regs.c: New file.
* gdb.arch/powerpc-htm-regs.exp: New file.
gdb/doc/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* gdb.texinfo (PowerPC Features): Describe new features
"org.gnu.gdb.power.htm.spr", "org.gnu.gdb.power.htm.core",
"org.gnu.gdb.power.htm.fpu", "org.gnu.gdb.power.htm.altivec",
"org.gnu.gdb.power.htm.vsx", "org.gnu.gdb.power.htm.ppr",
"org.gnu.gdb.power.htm.dscr", "org.gnu.gdb.power.htm.tar".
Currently rs6000_gdbarch_init will accept a tdesc with the
"org.gnu.gdb.power.vsx" feature but without the
"org.gnu.gdb.power.altivec" or "org.gnu.gdb.power.fpu".
It isn't clear from the standard features documentation that these are
requirements. However, these tdescs would cause trouble in the VSX
pseudo-register functions, so this patch will cause them to be
rejected.
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* rs6000-tdep.c (rs6000_gdbarch_init): Reject tdescs with vsx but
without altivec or fpu.
This patch adds support for registers of the Event Based Branching and
Performance Monitoring Units for the powerpc linux native and core
file targets, and for the powerpc linux server stub.
All three EBB registers are accessible. Only a subset of the PMU
registers can be accessed through ptrace. Because of this, the PMU
registers are enumerated individually in gdbarch_tdep, as opposed to
having a single "have_pmu" flag. This is intended to make it easier
to add additional PMU registers in the future, since checking a
"have_pmu" flag elsewhere in the code would no longer be correct. The
tdesc feature is named org.gnu.gdb.power.linux.pmu because of this.
It's unclear if it makes sense to save and restore these registers
across function calls, since some of them can be modified
asynchronously. They are also not tracked in record-replay mode.
The kernel can return ENODATA when ptrace is used to get the EBB
registers, unless a linux performance event that uses EBB is open in
the inferior. For this reason, the "fill" functions in the server
stub for the ebb register sets is not implemented.
Since gdbserver writes all registers in one go before resuming the
inferior, this error would not be detected at the time the user tries
to write to one of the registers on the client side, and gdbserver
would print out warnings every time it resumes the inferior when no
ebb performance event is opened, so there is currently no
straightforward way to handle this case. This means the ebb registers
in the client-side regcache can become dirty when the user tries to
write to them, until the inferior is resumed and stopped again.
A related issue is that 'G' packets used to write to unrelated
registers will include bad data for the EBB registers if they are
unavailable, since no register status information is included in the
'G' packet. This data won't be written to the inferior by the
gdbserver stub because the "fill" functions are not implemented, and
currently the gdbserver stub doesn't change the status of the
registers in its own regcache in response to 'G' packets.
Another limitation for the ebb registers is that traceframes don't
record if registers are available or not, so if these registers are
collected when a tracepoint is hit and the inferior has no ebb event
opened, the user will see zero values for all of them, instead of the
usual <unavailable>.
Because these registers are often unavailable, trying to store them
with target_store_registers with -1 for the regno argument (all
registers) would almost always fail, so they are ignored in this case.
gdb/ChangeLog:
2018-10-26 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* arch/ppc-linux-common.h (PPC_LINUX_SIZEOF_EBBREGSET)
(PPC_LINUX_SIZEOF_PMUREGSET): Declare.
* nat/ppc-linux.h (PPC_FEATURE2_EBB, NT_PPC_EBB, NT_PPC_PMU):
Define if not already defined.
* features/rs6000/power-ebb.xml: New file.
* features/rs6000/power-linux-pmu.xml: New file.
* features/rs6000/powerpc-isa207-vsx32l.xml: Include ebb and pmu
features.
* features/rs6000/powerpc-isa207-vsx64l.xml: Likewise.
* features/rs6000/powerpc-isa207-vsx32l.c: Re-generate.
* features/rs6000/powerpc-isa207-vsx64l.c: Re-generate.
* regformats/rs6000/powerpc-isa207-vsx32l.dat: Re-generate.
* regformats/rs6000/powerpc-isa207-vsx64l.dat: Re-generate.
* ppc-linux-nat.c (fetch_register, fetch_ppc_registers): Call
fetch_regset with ebb and pmu regsets.
(store_register, store_ppc_registers): Call store_regset with ebb
and pmu regsets.
(ppc_linux_nat_target::read_description): Set isa207 field in the
features struct if ebb and pmu are avaiable.
* ppc-linux-tdep.c (ppc32_regmap_ebb, ppc32_regmap_pmu)
(ppc32_linux_ebbregset, ppc32_linux_pmuregset): New globals.
(ppc_linux_iterate_over_regset_sections): Call back with the ebb
and pmu regsets.
(ppc_linux_core_read_description): Check if the pmu section is
present and set isa207 in the features struct.
* ppc-linux-tdep.h (ppc32_linux_ebbregset)
(ppc32_linux_pmuregset): Declare.
* ppc-tdep.h (struct gdbarch_tdep) <ppc_mmcr0_regnum>: New field.
<ppc_mmcr2_regnum, ppc_siar_regnum, ppc_sdar_regnum>: New fields.
<ppc_sier_regnum>: New field.
(enum): <PPC_BESCR_REGNUM, PPC_EBBHR_REGNUM, PPC_EBBRR_REGNUM>:
New enum values.
<PPC_MMCR0_REGNUM, PPC_MMCR2_REGNUM, PPC_SIAR_REGNUM>: New enum
values.
<PPC_SDAR_REGNUM, PPC_SIER_REGNUM>: New enum values.
(PPC_IS_EBB_REGNUM, PPC_IS_PMU_REGNUM): Define.
* rs6000-tdep.c (rs6000_gdbarch_init): Look for and validate the
ebb and pmu features.
gdb/gdbserver/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* configure.srv (powerpc*-*-linux*): Add rs6000/power-ebb.xml and
rs6000/power-linux-pmu.xml to srv_xmlfiles.
* linux-ppc-low.c (ppc_store_ebbregset, ppc_fill_pmuregset)
(ppc_store_pmuregset): New functions.
(ppc_regsets): Add entries for ebb and pmu regsets.
(ppc_arch_setup): Set isa207 in features struct if the ebb and
pmu regsets are available. Set sizes for these regsets.
gdb/doc/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* gdb.texinfo (PowerPC Features): Describe new features
"org.gnu.gdb.power.ebb" and "org.gnu.gdb.power.linux.pmu".
This patch adds support for the Target Address Register for powerpc
linux native and core file targets, and in the powerpc linux server
stub.
gdb/ChangeLog:
2018-10-26 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* arch/ppc-linux-tdesc.h (tdesc_powerpc_isa207_vsx32l)
(tdesc_powerpc_isa207_vsx64l): Declare.
* arch/ppc-linux-common.h (PPC_LINUX_SIZEOF_TARREGSET): Define.
(struct ppc_linux_features) <isa207>: New field.
(ppc_linux_no_features): Add initializer for isa207 field.
* arch/ppc-linux-common.c (ppc_linux_match_description): Return
new tdescs.
* nat/ppc-linux.h (PPC_FEATURE2_ARCH_2_07, PPC_FEATURE2_TAR)
(NT_PPC_TAR): Define if not already defined.
* features/Makefile (WHICH): Add rs6000/powerpc-isa207-vsx32l and
rs6000/powerpc-isa207-vsx64l.
(XMLTOC): Add rs6000/powerpc-isa207-vsx32l.xml and
rs6000/powerpc-isa207-vsx64l.xml.
* features/rs6000/power-tar.xml: New file.
* features/rs6000/powerpc-isa207-vsx32l.xml: New file.
* features/rs6000/powerpc-isa207-vsx64l.xml: New file.
* features/rs6000/powerpc-isa207-vsx32l.c: Generate.
* features/rs6000/powerpc-isa207-vsx64l.c: Generate.
* regformats/rs6000/powerpc-isa207-vsx32l.dat: Generate.
* regformats/rs6000/powerpc-isa207-vsx64l.dat: Generate.
* ppc-linux-nat.c (fetch_register, fetch_ppc_registers): Call
fetch_regset with the TAR regset.
(store_register, store_ppc_registers): Call store_regset with the
TAR regset.
(ppc_linux_nat_target::read_description): Set isa207 field in the
features struct if needed.
* ppc-linux-tdep.c: Include
features/rs6000/powerpc-isa207-vsx32l.c and
features/rs6000/powerpc-isa207-vsx64l.c.
(ppc32_regmap_tar, ppc32_linux_tarregset): New globals.
(ppc_linux_iterate_over_regset_sections): Call back with the tar
regset.
(ppc_linux_core_read_description): Check if the tar section is
present and set isa207 in the features struct.
(_initialize_ppc_linux_tdep): Call
initialize_tdesc_powerpc_isa207_vsx32l and
initialize_tdesc_powerpc_isa207_vsx64l.
* ppc-linux-tdep.h (ppc32_linux_tarregset): Declare.
* ppc-tdep.h (gdbarch_tdep) <ppc_tar_regnum>: New field.
(enum) <PPC_TAR_REGNUM>: New enum value.
* rs6000-tdep.c (rs6000_gdbarch_init): Look for and validate tar
feature.
(ppc_process_record_op31): Record changes to TAR.
gdb/gdbserver/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* configure.srv (ipa_ppc_linux_regobj): Add
powerpc-isa207-vsx64l-ipa.o and powerpc-isa207-vsx32l-ipa.o.
(powerpc*-*-linux*): Add powerpc-isa207-vsx32l.o and
powerpc-isa207-vsx64l.o to srv_regobj, add rs6000/power-tar.xml,
rs6000/powerpc-isa207-vsx32l.xml, and
rs6000/powerpc-isa207-vsx64l.xml to srv_xmlfiles.
* linux-ppc-tdesc-init.h (enum ppc_linux_tdesc)
<PPC_TDESC_ISA207_VSX>: New enum value.
(init_registers_powerpc_isa207_vsx32l): Declare.
(init_registers_powerpc_isa207_vsx64l): Declare.
* linux-ppc-low.c (ppc_fill_tarregset): New function.
(ppc_store_tarregset): New function.
(ppc_regsets): Add entry for the TAR regset.
(ppc_arch_setup): Set isa207 in features struct when needed. Set
size for the TAR regsets.
(ppc_get_ipa_tdesc_idx): Return PPC_TDESC_ISA207_VSX.
(initialize_low_arch): Call init_registers_powerpc_isa207_vsx32l
and init_registers_powerpc_isa207_vsx64l.
* linux-ppc-ipa.c (get_ipa_tdesc): Handle PPC_TDESC_ISA207_VSX.
(initialize_low_tracepoint): Call
init_registers_powerpc_isa207_vsx32l and
init_registers_powerpc_isa207_vsx64l.
gdb/testsuite/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* gdb.arch/powerpc-tar.c: New file.
* gdb.arch/powerpc-tar.exp: New file.
gdb/doc/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* gdb.texinfo (PowerPC Features): Describe new feature
"org.gnu.gdb.power.tar".
This patch adds gdb support for the Program Priorty Register and the
Data Stream Control Register, for the powerpc linux native and core
file targets, and for the powerpc linux server stub.
gdb/ChangeLog:
2018-10-26 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* arch/ppc-linux-tdesc.h (tdesc_powerpc_isa205_ppr_dscr_vsx32l)
(tdesc_powerpc_isa205_ppr_dscr_vsx64l): Declare.
* arch/ppc-linux-common.h (PPC_LINUX_SIZEOF_PPRREGSET)
(PPC_LINUX_SIZEOF_DSCRREGSET): Define.
(struct ppc_linux_features) <ppr_dscr>: New field.
(ppc_linux_no_features): Add initializer for ppr_dscr field.
* arch/ppc-linux-common.c (ppc_linux_match_description): Return
new tdescs.
* nat/ppc-linux.h (PPC_FEATURE2_DSCR, NT_PPC_PPR, NT_PPC_DSCR):
Define if not already defined.
* features/Makefile (WHICH): Add
rs6000/powerpc-isa205-ppr-dscr-vsx32l and
rs6000/powerpc-isa205-ppr-dscr-vsx64l.
(XMLTOC): Add rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml and
rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml.
* features/rs6000/power-dscr.xml: New file.
* features/rs6000/power-ppr.xml: New file.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml: New file.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml: New file.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.c: Generate.
* features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.c: Generate.
* regformats/rs6000/powerpc-isa205-ppr-dscr-vsx32l.dat: Generate.
* regformats/rs6000/powerpc-isa205-ppr-dscr-vsx64l.dat: Generate.
* ppc-linux-nat.c: Include <sys/uio.h>.
(fetch_regset, store_regset, check_regset): New functions.
(fetch_register, fetch_ppc_registers): Call fetch_regset with
DSCR and PPR regsets.
(store_register, store_ppc_registers): Call store_regset with
DSCR and PPR regsets.
(ppc_linux_get_hwcap2): New function.
(ppc_linux_nat_target::read_description): Call
ppc_linux_get_hwcap2 and check_regset, set ppr_dscr field in the
features struct if needed.
* ppc-linux-tdep.c: Include
features/rs6000/powerpc-isa205-ppr-dscr-vsx32l.c and
features/rs6000/powerpc-isa205-ppr-dscr-vsx64l.c.
(ppc32_regmap_ppr, ppc32_regmap_dscr, ppc32_linux_pprregset)
(ppc32_linux_dscrregset): New globals.
(ppc_linux_iterate_over_regset_sections): Call back with the ppr
and dscr regsets.
(ppc_linux_core_read_description): Check if the ppr and dscr
sections are present and set ppr_dscr in the features struct.
(_initialize_ppc_linux_tdep): Call
initialize_tdesc_powerpc_isa205_ppr_dscr_vsx32l and
initialize_tdesc_powerpc_isa205_ppr_dscr_vsx64l.
* ppc-linux-tdep.h (ppc32_linux_pprregset)
(ppc32_linux_dscrregset): Declare.
* ppc-tdep.h (struct gdbarch_tdep) <ppc_ppr_regnum>: New field.
<ppc_dscr_regnum>: New field.
(enum) <PPC_PPR_REGNUM, PPC_DSCR_REGNUM>: New enum values.
* rs6000-tdep.c (rs6000_gdbarch_init): Look for and validate ppr
and dscr features.
(ppc_process_record_op31): Record changes to PPR and DSCR.
gdb/gdbserver/ChangeLog:
2018-10-26 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* configure.srv (ipa_ppc_linux_regobj): Add
powerpc-isa205-ppr-dscr-vsx32l-ipa.o and
powerpc-isa205-ppr-dscr-vsx64l-ipa.o.
(powerpc*-*-linux*): Add powerpc-isa205-ppr-dscr-vsx32l.o and
powerpc-isa205-ppr-dscr-vsx64l.o to srv_regobj, add
rs6000/power-dscr.xml, rs6000/power-ppr.xml,
rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml and
rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml to srv_xmlfiles.
* linux-ppc-tdesc-init.h (enum ppc_linux_tdesc)
<PPC_TDESC_ISA205_PPR_DSCR_VSX>: New enum value.
(init_registers_powerpc_isa205_ppr_dscr_vsx32l)
(init_registers_powerpc_isa205_ppr_dscr_vsx64l): Declare.
* linux-ppc-low.c: Include "elf/common.h" and <sys/uio.h>.
(ppc_hwcap): Add comment.
(ppc_hwcap2): New global.
(ppc_check_regset, ppc_fill_pprregset, ppc_store_pprregset)
(ppc_fill_dscrregset, ppc_store_dscrregset): New functions.
(ppc_regsets): Add entries for the DSCR and PPR regsets.
(ppc_arch_setup): Get AT_HWCAP2. Set ppr_dscr in features struct
when needed. Set sizes for the the DSCR and PPR regsets.
(ppc_get_ipa_tdesc_idx): Return PPC_TDESC_ISA205_PPR_DSCR_VSX.
(initialize_low_arch): Call
init_registers_powerpc_isa205_ppr_dscr_vsx32l and
init_registers_powerpc_isa205_ppr_dscr_vsx64l.
* linux-ppc-ipa.c (get_ipa_tdesc): Handle
PPC_TDESC_ISA205_PPR_DSCR_VSX.
(initialize_low_tracepoint): Call
init_registers_powerpc_isa205_ppr_dscr_vsx32l and
init_registers_powerpc_isa205_ppr_dscr_vsx64l.
gdb/testsuite/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* gdb.arch/powerpc-ppr-dscr.c: New file.
* gdb.arch/powerpc-ppr-dscr.exp: New file.
gdb/doc/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* gdb.texinfo (PowerPC Features): Describe new features
"org.gnu.gdb.power.ppr" and "org.gnu.gdb.power.dscr".
This patch refactors a series of initializers in rs6000_gdbarch_init
for clarity. The have_fpu initializer is also changed to set the
variable to 0, like the other similar variables. This doesn't affect
program behavior.
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* rs6000-tdep.c (rs6000_gdbarch_init): Replace line wrapping by a
second initializer line for the have_* variables. Initialize
have_fpu to 0 instead of 1.
This patch parenthesizes the tdesc selection expressions in
arch/ppc-linux-common.c so that they can be tab-indented.
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* arch/ppc-linux-common.c (ppc_linux_match_description):
Parenthesize tdesc assignements and indent them properly.
This patch changes two if statements to else if statements in
ppc-linux-nat.c:fetch_register for clarity.
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* ppc-linux-nat.c (fetch_register): Change if statement to else
if.
(store_register): Likewise.
This patch removes rs6000_pseudo_register_reggroup_p.
Group membership for the pseudoregisters can be detected through their
types in default_register_reggroup_p through
tdesc_register_reggroup_p.
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* rs6000-tdep.c: Remove reggroups.h include.
(rs6000_pseudo_register_reggroup_p): Remove.
(rs6000_gdbarch_init): Remove call to
set_tdesc_pseudo_register_reggroup_p.
This patch changes default_register_reggroup_p to return true when the
register type is decimal floating point and the reggroup is
float_reggroup.
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* reggroups.c (default_register_reggroup_p): Return true for
decfloat registers and float_reggroup.
Now that linux-tdep.c already zero-initializes the buffer used for
generating core file notes, there is no need to do this in the linux
collect functions for the vector regset. The memsets in gdbserver were
not useful to begin with.
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* ppc-linux-tdep.c (ppc_linux_collect_vrregset): Remove.
(ppc32_le_linux_vrregset, ppc32_be_linux_vrregset): Replace
ppc_linux_collect_vrregset by regcache_collect_regset.
gdb/gdbserver/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* linux-ppc-low.c (ppc_fill_vrregset): Remove memset calls.
This patches changes linux-tdep.c so that the buffer used to write
note sections when generating a core file is zero-initialized. This
way, bytes that are not collected won't contain random
data (e.g. padding bytes).
gdb/ChangeLog:
2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com>
* linux-tdep.c (linux_collect_regset_section_cb): Use
std::vector<gdb_byte> instead of char * and malloc for buf.
Remove xfree.
When reading the MISA register, the RISC-V specification says that, if
MISA can't be found then a default value of 0 should be assumed.
As such, this patch ensures that GDB ignores errors when accessing
both the new and old locations for the MISA register.
Additionally, this patch removes an unneeded flag parameter which
didn't provide any additional functionality beyond checking the MISA
for the default value of 0.
gdb/ChangeLog:
* riscv-tdep.c (riscv_read_misa_reg): Update comment, remove
READ_P parameter, catch and ignore register access errors from
either the old or new MISA location.
(riscv_has_feature): Update call to riscv_read_misa_reg.
Commit 91ae256e33 fixes the behavior of ld when `--gc-sections` and
`--gc-keep-exported` are both given on the linker command line. This
updates the ld documentation to suit.
* ld.texi (--gc-sections): Update.
Now that valgrind-db-attach.exp no longer use --db-attach, rename
valgrind-db-attach.{c,exp} to valgrind-bt.{c,exp}.
2018-10-25 Tom de Vries <tdevries@suse.de>
* gdb.base/valgrind-db-attach.c: Rename to ...
* gdb.base/valgrind-bt.c: ... this.
* gdb.base/valgrind-db-attach.exp: Rename to ...
* gdb.base/valgrind-bt.exp: ... this.
The valgrind option --db-attach has been deprecated in version 3.10.0, and
removed in version 3.11.0, so the valgrind-db-attach.exp testcase is
unsupported starting version 3.11.0.
Rewrite the test-case to use vgdb instead (making it supported starting
version 3.7.0).
Tested on x86_64-linux with and without --target_board=native-gdbserver.
2018-10-25 Tom de Vries <tdevries@suse.de>
* gdb.base/valgrind-db-attach.exp: Rewrite to use vgdb.
Make convert_values_to_python return a gdbpy_ref<> directly rather
than building a gdbpy_ref<>, releasing it, and then having a new
gdbpy_ref<> created to hold the result.
I also added a header comment to convert_values_to_python.
gdb/ChangeLog:
* python/py-function.c (convert_values_to_python): Return
gdbpy_ref<>. Add header comment.
(fnpy_call): Adjust.
Make cmdpy_completer_helper return a gdbpy_ref<> directly rather than
building a gdbpy_ref<>, releasing it, and then having a new
gdbpy_ref<> created to hold the result.
gdb/ChangeLog:
* python/py-cmd.c (cmdpy_completer_helper): Return gdbpy_ref<>.
(cmdpy_completer_handle_brkchars): Adjust.
(cmdpy_completer): Adjust.
Alan Modra
John Darrington
GDB Administrator
Andrew Burgess
Philippe Waroquiers
Tom Tromey
John Baldwin
Jim Wilson
Edjunior Barbosa Machado
Pedro Franco de Carvalho
Sangamesh Mallayya
Christoph Conrads
Tom de Vries