The linker merges all the input .sframe sections. When merging, the
linker verifies that all the input .sframe sections have the same
abi/arch.
The linker uses libsframe library to perform key actions on the
.sframe sections - decode, read, and create output data. This
implies buildsystem changes to make and install libsframe before
libbfd.
The linker places the output .sframe section in a new segment of its
own: PT_GNU_SFRAME. A new segment is not added, however, if the
generated .sframe section is empty.
When a section is discarded from the final link, the corresponding
entries in the .sframe section for those functions are also deleted.
The linker sorts the SFrame FDEs on start address by default and sets
the SFRAME_F_FDE_SORTED flag in the .sframe section.
This patch also adds support for generation of SFrame unwind
information for the .plt* sections on x86_64. SFrame unwind info is
generated for IBT enabled PLT, lazy/non-lazy PLT.
The existing linker option --no-ld-generated-unwind-info has been
adapted to include the control of whether .sframe unwind information
will be generated for the linker generated sections like PLT.
Changes to the linker script have been made as necessary.
ChangeLog:
* Makefile.def: Add install dependency on libsframe for libbfd.
* Makefile.in: Regenerated.
* bfd/Makefile.am: Add elf-sframe.c
* bfd/Makefile.in: Regenerated.
* bfd/bfd-in2.h (SEC_INFO_TYPE_SFRAME): Regenerated.
* bfd/configure: Regenerate.
* bfd/configure.ac: Add elf-sframe.lo.
* bfd/elf-bfd.h (struct sframe_func_bfdinfo): New struct.
(struct sframe_dec_info): Likewise.
(struct sframe_enc_info): Likewise.
(struct elf_link_hash_table): New member for encoded .sframe
object.
(struct output_elf_obj_tdata): New member.
(elf_sframe): New access macro.
(_bfd_elf_set_section_sframe): New declaration.
* bfd/elf.c (get_segment_type): Handle new segment
PT_GNU_SFRAME.
(bfd_section_from_phdr): Likewise.
(get_program_header_size): Likewise.
(_bfd_elf_map_sections_to_segments): Likewise.
* bfd/elf64-x86-64.c (elf_x86_64_link_setup_gnu_properties): Add
contents to the .sframe sections or .plt* entries.
* bfd/elflink.c (elf_section_ignore_discarded_relocs): Handle
SEC_INFO_TYPE_SFRAME.
(_bfd_elf_default_action_discarded): Handle .sframe section.
(elf_link_input_bfd): Merge .sframe section.
(bfd_elf_final_link): Write the output .sframe section.
(bfd_elf_discard_info): Handle discarding .sframe section.
* bfd/elfxx-x86.c (_bfd_x86_elf_size_dynamic_sections): Create
.sframe section for .plt and .plt.sec.
(_bfd_x86_elf_finish_dynamic_sections): Handle .sframe from
.plt* sections.
* bfd/elfxx-x86.h (PLT_SFRAME_FDE_START_OFFSET): New
definition.
(SFRAME_PLT0_MAX_NUM_FRES): Likewise.
(SFRAME_PLTN_MAX_NUM_FRES): Likewise.
(struct elf_x86_sframe_plt): New structure.
(struct elf_x86_link_hash_table): New member.
(struct elf_x86_init_table): New members for .sframe
creation.
* bfd/section.c: Add new definition SEC_INFO_TYPE_SFRAME.
* binutils/readelf.c (get_segment_type): Handle new segment
PT_GNU_SFRAME.
* ld/ld.texi: Update documentation for
--no-ld-generated-unwind-info.
* ld/scripttempl/elf.sc: Support .sframe sections.
* ld/Makefile.am (TESTSFRAMELIB): Use it.
(check-DEJAGNU): Likewise.
* ld/Makefile.in: Regenerated.
* ld/configure.ac (TESTSFRAMELIB): Set to the .so or .a like TESTBFDLIB.
* ld/configure: Regenerated.
* bfd/elf-sframe.c: New file.
include/ChangeLog:
* elf/common.h (PT_GNU_SFRAME): New definition.
* elf/internal.h (struct elf_segment_map): Handle new segment
type PT_GNU_SFRAME.
ld/testsuite/ChangeLog:
* ld/testsuite/ld-bootstrap/bootstrap.exp: Add SFRAMELIB.
* ld/testsuite/ld-aarch64/aarch64-elf.exp: Add new test
sframe-simple-1.
* ld/testsuite/ld-aarch64/sframe-bar.s: New file.
* ld/testsuite/ld-aarch64/sframe-foo.s: Likewise.
* ld/testsuite/ld-aarch64/sframe-simple-1.d: Likewise.
* ld/testsuite/ld-sframe/sframe-empty.d: New test.
* ld/testsuite/ld-sframe/sframe-empty.s: New file.
* ld/testsuite/ld-sframe/sframe.exp: New testsuite.
* ld/testsuite/ld-x86-64/sframe-bar.s: New file.
* ld/testsuite/ld-x86-64/sframe-foo.s: Likewise.
* ld/testsuite/ld-x86-64/sframe-simple-1.d: Likewise.
* ld/testsuite/ld-x86-64/sframe-plt-1.d: Likewise.
* ld/testsuite/ld-x86-64/sframe-simple-1.d: Likewise.
* ld/testsuite/ld-x86-64/x86-64.exp: Add new tests -
sframe-simple-1, sframe-plt-1.
* ld/testsuite/lib/ld-lib.exp: Add new proc to check if
assembler supports SFrame section.
* ld/testsuite/ld-sframe/discard.d: New file.
* ld/testsuite/ld-sframe/discard.ld: Likewise.
* ld/testsuite/ld-sframe/discard.s: Likewise.
libsframe is a library that allows you to:
- decode a .sframe section
- probe and inspect a .sframe section
- encode (and eventually write) a .sframe section.
This library is currently being used by the linker, readelf, objdump.
This library will also be used by the SFrame unwinder which is still
to be upstream'd.
The file include/sframe-api.h defines the user-facing APIs for decoding,
encoding and probing .sframe sections. A set of error codes together
with their error message strings are also defined.
Endian flipping is performed automatically at read and write time, if
cross-endianness is detected.
ChangeLog:
* Makefile.def: Add libsframe as new module with its
dependencies.
* Makefile.in: Regenerated.
* binutils/Makefile.am: Add libsframe.
* binutils/Makefile.in: Regenerated.
* configure: Regenerated
* configure.ac: Add libsframe to host_libs.
* libsframe/Makefile.am: New file.
* libsframe/Makefile.in: New file.
* libsframe/aclocal.m4: New file.
* libsframe/config.h.in: New file.
* libsframe/configure: New file.
* libsframe/configure.ac: New file.
* libsframe/sframe-error.c: New file.
* libsframe/sframe-impl.h: New file.
* libsframe/sframe.c: New file.
include/ChangeLog:
* sframe-api.h: New file.
testsuite/ChangeLog:
* libsframe/testsuite/Makefile.am: New file.
* libsframe/testsuite/Makefile.in: Regenerated.
* libsframe/testsuite/libsframe.decode/Makefile.am: New
file.
* libsframe/testsuite/libsframe.decode/Makefile.in:
Regenerated.
* libsframe/testsuite/libsframe.decode/decode.exp: New file.
* libsframe/testsuite/libsframe.encode/Makefile.am:
Likewise.
* libsframe/testsuite/libsframe.encode/Makefile.in:
Regenerated.
* libsframe/testsuite/libsframe.encode/encode.exp: New file.
* libsframe/testsuite/libsframe.encode/encode-1.c: Likewise.
* libsframe/testsuite/libsframe.decode/be-flipping.c: Likewise.
* libsframe/testsuite/libsframe.decode/frecnt-1.c: Likewise.
* libsframe/testsuite/libsframe.decode/frecnt-2.c: Likewise.
* libsframe/testsuite/libsframe.decode/DATA-BE: New file.
* libsframe/testsuite/libsframe.decode/DATA1: Likewise.
* libsframe/testsuite/libsframe.decode/DATA2: Likewise.
Without this, a "make all-sim" without the equivalent of
libreadline-dev installed on the build system, won't
properly pick up the in-tree readline build, and you'll see:
mkdir -p -- ./sim
Configuring in ./sim
configure: creating cache ./config.cache
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking target system type... cris-axis-elf
checking for x86_64-pc-linux-gnu-gcc... gcc
checking whether the C compiler works... yes
...
checking for library containing tgetent... -ltermcap
checking for readline in -lreadline... no
configure: error: the required "readline" library is missing
make[1]: *** [Makefile:11188: configure-sim] Error 1
make[1]: Leaving directory '/home/hp/sim/b'
The sim dependency on readline is apparently (nominally)
valid as there's a readline call in sim/erc32/sis.c.
2022-02-21 Hans-Peter Nilsson <hp@axis.com>
* Makefile.def (dependencies): Make configure-sim depend on
all-readline.
GDB is going to start using libbacktrace, so add a build dependency.
ChangeLog:
* Makefile.def: Add all-gdb dependency on all-libbacktrace.
* Makefile.in: Regenerate.
We're going to start using gnulib in the sim, so make sure it exists.
ChangeLog:
* Makefile.def: Add configure-sim dependency on all-gnulib.
* Makefile.in: Regenerated.
This stops problems parallel-installing if a relink of libctf is needed.
Also adds corresponding install-strip dependencies.
ChangeLog
2021-03-18 Nick Alcock <nick.alcock@oracle.com>
PR libctf/27482
* Makefile.def: Add install-bfd dependencies for install-libctf and
install-ld, and install-strip-bfd dependencies for
install-strip-libctf and install-strip-ld; move the install-ld
dependency on install-libctf to join it.
* Makefile.in: Regenerated.
I'm not entirely sure why this is here since the sim doesn't use
anything from the gdb/ dir directly, and the commit that added it
included a bunch more changes and doesn't seem to call out this
dep specifically.
Since ld may depend on libctf (if present), and libctf may be relinked
by the installation process, libctf must be installed before ld is,
or the relink may fail if it calls on symbols or symbol versions that do
not exist in any libctf already present on the system. (If none is
present, the copy in the build tree will be automatically used, but
if one *is* present, it may take precedence and break things.)
(This is a maybe- dependency, so it will work even if libctf is
disabled.)
ChangeLog
2021-01-26 Nick Alcock <nick.alcock@oracle.com>
PR 27250
* Makefile.def: Add install-libctf dependency to install-ld.
* Makefile.in: Regenerated.
This introduces a new lookup testsuite under libctf, which operates by
compiling (with libtool) a "lookup" .c file that uses libctf to analyze
some other program, then compiling some number of test object files with
CTF and optionally linking them together and running the lookup program
on the test object files (or linked test binary), before diffing the
result much as run_dump_test does.
This lets us test the portions of libctf that are not previously
testable, notably the portions that do lookup on linked output and
that create dynamic dictionaries and then do lookup on them before
writing them out, something that is not tested by the ld-ctf testsuite
because the linker never does this.
A couple of simple tests are added: one testing the functionality of
enum lookups, and one testing that the recently-added commit adding
extra paranoia to incomplete type handling doesn't break linking and
that the result of the link is an (otherwise-impossible) array of
forward type in the shared CTF dict.
ChangeLog
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* Makefile.def (libctf): No longer no_check. Checking depends on
all-ld.
* Makefile.in: Regenerated.
libctf/ChangeLog
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* Makefile.am (EXPECT): New.
(RUNTEST): Likewise.
(RUNTESTFLAGS): Likewise.
(CC_FOR_TARGET): Likewise.
(check-DEJAGNU): Likewise.
(AUTOMAKE_OPTIONS): Add dejagnu.
* Makefile.in: Regenerated.
* testsuite/config/default.exp: New.
* testsuite/lib/ctf-lib.exp: Likewise.
* testsuite/libctf-lookup/enum.lk: New test.
* testsuite/libctf-lookup/enum-ctf.c: New CTF input.
* testsuite/libctf-lookup/enum.c: New lookup test.
* testsuite/libctf-lookup/ambiguous-struct*.c: New test.
* testsuite/libctf-lookup/lookup.exp: New.
After commit:
commit 361cb21935
Date: Tue Oct 6 10:09:06 2020 +0100
gnulib: Ensure all libraries are used when building gdb/gdbserver
We now get an error when, at the top level of the build tree, we do
'make distclean'.
The reason for this is that the gnulib directory is cleaned before the
gdb directory, cleaning gnulib deletes Makefile.gnulib.inc from the
gnulib build directory, which is currently pulled in by the gdb
Makefile.in using 'include'.
This commit adds a dependency between distclean-gnulib and both
distclean-gdb and distclean-gdbserver. This means that gdb and
gdbserver will be cleaned before gnulib, as a result the
Makefile.gnulib.inc file should exist when needed.
ChangeLog:
* Makefile.in: Rebuild.
* Makefile.def: Make distclean-gnulib depend on distclean-gdb and
distclean-gdbserver.
This changes the gdbserver build to use the gdbsupport that was built
for gdb.
gdbserver and gdbreplay now must use WIN32APILIBS (aka -lws2_32).
Before this change, gdbserver did not define USE_WIN32API when
building gdbsupport, but now this is always done.
ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* Makefile.in: Rebuild.
* Makefile.def (gdbserver): Depend on gdbsupport.
gdbserver/ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* configure: Rebuild.
* configure.ac (GDBSERVER_DEPFILES): Remove srv_selftest_objs.
(WIN32APILIBS): New subst.
* Makefile.in (SFILES, OBS, TAGS, GDBREPLAY_OBS): Remove
gdbsupport files.
(gdbsupport/%.o): Remove target.
(GDBSUPPORT_BUILDDIR, GDBSUPPORT): New variables.
(gdbserver$(EXEEXT), gdbreplay$(EXEEXT)): Add GDBSUPPORT.
(WIN32APILIBS): New variable.
(gdbserver$(EXEEXT)): Add WIN32APILIBS.
(gdbreplay$(EXEEXT)): Likewise.
This changes gdbsupport so that it no longer relies on BFD. This is a
precursor to making gdbserver use the already-built gdbsupport,
because building gdbserver should not require BFD to be built.
The most notable change here is that CORE_ADDR is always a 64-bit
type. This makes it so that gdb acts as if it were always built in
64-bit mode.
ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* Makefile.in: Rebuild.
* Makefile.def (gdbsupport): Don't depend on bfd.
gdbsupport/ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* common-types.h: Remove GDBSERVER code.
(gdb_byte, CORE_ADDR, LONGEST, ULONGEST): Redefine.
* common-defs.h: Remove GDBSERVER code.
gdbserver uses gdb's alloc.c, and this in turn can include headers
from intl via gdbsupport/gdb_locale.h. This can cause build failures
in some situations, for example if you build gdb and gdbserver on
mingw.
This patch restores the gdbsupport dependency on intl, and changes
gdbserver to use ZW_GNU_GETTEXT_SISTER_DIR. This fixes this build
problem.
ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* Makefile.in: Rebuild.
* Makefile.def (gdbsupport): Depend on intl.
gdbserver/ChangeLog
2020-03-12 Tom Tromey <tom@tromey.com>
* config.in, configure: Rebuild.
* configure.ac: Call ZW_GNU_GETTEXT_SISTER_DIR.
* acinclude.m4: Include gettext-sister.m4.
* Makefile.in (top_builddir, INTL, INTL_DEPS, INTL_CFLAGS): New
variables.
(INCLUDE_CFLAGS): Add INTL_CFLAGS.
(gdbserver$(EXEEXT), gdbreplay$(EXEEXT)): Use INTL_DEPS, INTL.
This changes gdbserver so that it no longer builds its own gnulib and
libiberty. Instead, it now relies on the ones that were already built
at the top level.
gdbsupport is still built specially for gdbserver. This is more
complicated and will be tackled in a subsequent patch.
ChangeLog
2020-02-14 Tom Tromey <tom@tromey.com>
* Makefile.in: Rebuild.
* Makefile.def: Make gdbserver require gnulib and libiberty.
gdbserver/ChangeLog
2020-02-14 Tom Tromey <tom@tromey.com>
* acinclude.m4: Don't include acx_configure_dir.m4.
* Makefile.in (LIBIBERTY_BUILDDIR, GNULIB_BUILDDIR): Update.
(SUBDIRS, CLEANDIRS, REQUIRED_SUBDIRS): Remove.
(all, install-only, uninstall, clean-info, clean)
(maintainer-clean): Don't recurse.
(subdir_do, all-lib): Remove.
($(LIBGNU) $(LIBIBERTY) $(GNULIB_H)): Remove rule.
(GNULIB_H): Remove.
(generated_files): Update.
($(GNULIB_BUILDDIR)/Makefile): Remove rule.
* configure: Rebuild.
* configure.ac: Don't configure gnulib or libiberty.
(GNULIB): Update.
gdbsupport/ChangeLog
2020-02-14 Tom Tromey <tom@tromey.com>
* common-defs.h: Change path to gnulib/config.h.
Change-Id: I469cbbf5db2ab37109c058e9e3a1e4f4dabdfc98
This patch moves gdbserver to the top level.
This patch is as close to a pure move as possible -- gdbserver still
builds its own variant of gnulib and gdbsupport. Changing this will
be done in a separate patch.
[v2] Note that, per Simon's review comment, this patch changes the
tree so that gdbserver is not built for or1k or score. This makes
sense, because there is apparently not actually a gdbserver port here.
[v3] This version of the patch also splits out some configury into a
new file, gdbserver/configure.host, so that the top-level configure
script can simply rely on it in order to decide whether gdbserver
should be built.
[v4] This version adds documentation and removes some unnecessary
top-level dependencies.
[v5] Update docs to mention "make all-gdbserver" and change how
top-level configure decides whether to build gdbserver, switching to a
single, shared script.
Tested by the buildbot.
ChangeLog
2020-02-07 Tom Tromey <tom@tromey.com>
Pedro Alves <palves@redhat.com>
* src-release.sh (GDB_SUPPORT_DIRS): Add gdbserver.
* gdbserver: New directory, moved from gdb/gdbserver.
* configure.ac (host_tools): Add gdbserver.
Only build gdbserver on certain systems.
* Makefile.in, configure: Rebuild.
* Makefile.def (host_modules, dependencies): Add gdbserver.
* MAINTAINERS: Add gdbserver.
gdb/ChangeLog
2020-02-07 Tom Tromey <tom@tromey.com>
* README: Update gdbserver documentation.
* gdbserver: Move to top level.
* configure.tgt (build_gdbserver): Remove.
* configure.ac: Remove --enable-gdbserver.
* configure: Rebuild.
* Makefile.in (distclean): Don't mention gdbserver.
Change-Id: I826b7565b54604711dc7a11edea0499cd51ff39e
Trying to run "make all-gdbsupport" at the top-level in a build from scratch
results in:
make[2]: Entering directory '/home/smarchi/build/binutils-gdb/gdbsupport'
CC agent.o
In file included from /home/smarchi/src/binutils-gdb/gdbsupport/common-defs.h:133,
from /home/smarchi/src/binutils-gdb/gdbsupport/agent.c:20:
/home/smarchi/src/binutils-gdb/gdbsupport/common-types.h:35:10: fatal error: bfd.h: No such file or directory
35 | #include "bfd.h"
| ^~~~~~~
Before building all-gdbsupport, we need all-bfd to run, so that bfd.h is
generated.
(Once this patch is merged in the binutils-gdb repo, I'll send it to gcc
to keep the files in sync.)
ChangeLog:
* Makefile.def: Add dependencies of all-gdbsupport on all-bfd.
* Makefile.in: Re-generate.
This patch moves the gdbsupport directory to the top level. This is
the next step in the ongoing project to move gdbserver to the top
level.
The bulk of this patch was created by "git mv gdb/gdbsupport gdbsupport".
This patch then adds a build system to gdbsupport and wires it into
the top level. Then it changes gdb to use the top-level build.
gdbserver, on the other hand, is not yet changed. It still does its
own build of gdbsupport.
ChangeLog
2020-01-14 Tom Tromey <tom@tromey.com>
* src-release.sh (GDB_SUPPORT_DIRS): Add gdbsupport.
* MAINTAINERS: Add gdbsupport.
* configure: Rebuild.
* configure.ac (configdirs): Add gdbsupport.
* gdbsupport: New directory, move from gdb/gdbsupport.
* Makefile.def (host_modules, dependencies): Add gnulib.
* Makefile.in: Rebuild.
gdb/ChangeLog
2020-01-14 Tom Tromey <tom@tromey.com>
* nat/x86-linux-dregs.c: Include configh.h.
* nat/linux-ptrace.c: Include configh.h.
* nat/linux-btrace.c: Include configh.h.
* defs.h: Include config.h, bfd.h.
* configure.ac: Don't source common.host.
(CONFIG_OBS, CONFIG_SRCS): Remove gdbsupport files.
* configure: Rebuild.
* acinclude.m4: Update path.
* Makefile.in (SUPPORT, LIBSUPPORT, INCSUPPORT): New variables.
(CONFIG_SRC_SUBDIR): Remove gdbsupport.
(INTERNAL_CFLAGS_BASE): Add INCSUPPORT.
(CLIBS): Add LIBSUPPORT.
(CDEPS): Likewise.
(COMMON_SFILES): Remove gdbsupport files.
(HFILES_NO_SRCDIR): Likewise.
(stamp-version): Update path to create-version.sh.
(ALLDEPFILES): Remove gdbsupport files.
gdb/gdbserver/ChangeLog
2020-01-14 Tom Tromey <tom@tromey.com>
* server.h: Include config.h.
* gdbreplay.c: Include config.h.
* configure: Rebuild.
* configure.ac: Don't source common.host.
* acinclude.m4: Update path.
* Makefile.in (INCSUPPORT): New variable.
(INCLUDE_CFLAGS): Add INCSUPPORT.
(SFILES): Update paths.
(version-generated.c): Update path to create-version.sh.
(gdbsupport/%-ipa.o, gdbsupport/%.o): Update paths.
gdbsupport/ChangeLog
2020-01-14 Tom Tromey <tom@tromey.com>
* common-defs.h: Add GDBSERVER case. Update includes.
* acinclude.m4, aclocal.m4, config.in, configure, configure.ac,
Makefile.am, Makefile.in, README: New files.
* Moved from ../gdb/gdbsupport/
Change-Id: I07632e7798635c1bab389bf885971e584fb4bb78
This patch adds the CTF (Compact Ansi-C Type Format) support in gdb.
Two submissions on which this gdb work depends were posted earlier
in May:
* On the binutils mailing list - adding libctf which creates, updates,
reads, and manipulates the CTF data.
* On the gcc mailing list - expanding gcc to directly emit the CFT data
with a new command line option -gt.
CTF is a reduced form of debugging information whose main purpose is to
describe the type of C entities such as structures, unions, typedefs and
function arguments at the global scope only. It does not contain debug
information about source lines, location expressions, or local variables.
For more information on CTF, see the documentation in the libdtrace-ctf
source tree, available here:
<https://raw.githubusercontent.com/oracle/libdtrace-ctf/master/doc/ctf-format>.
This patch expands struct elfinfo by adding the .ctf section, which
contains CTF debugging info, and modifies elf_symfile_read() to read it.
If both DWARF and CTF exist in a program, only DWARF will be read. CTF data
will be read only when there is no DWARF. The two-stage symbolic reading
and setting strategy, partial and full, was used.
File ctfread.c contains functions to transform CTF data into gdb's internal
symbol table structures by iterately reading entries from CTF sections
of "data objects", "function info", "variable info", and "data types"
when setting up either partial or full symbol table. If the ELF symbol table
is available, e.g. not stripped, the CTF reader will associate the found
type information with these symbol entries. Due to the proximity between DWARF
and CTF (CTF being a much simplified subset of DWARF), some DWARF implementation
was reused to support CTF.
Test cases ctf-constvars.exp, ctf-cvexpr.exp, ctf-ptype.exp, and ctf-whatis.exp
have been added to verify the correctness of this support.
This patch has missing features and limitations which we will add and
address in the future patches.
gdb/ChangeLog
+2019-10-07 Weimin Pan <weimin.pan@oracle.com>
+
+ * gdb/ctfread.c: New file.
+ * gdb/ctfread.h: New file.
+ * gdb/elfread.c: Include ctfread.h.
+ (struct elfinfo text_p): New member ctfsect.
+ (elf_locate_sections): Mark CTF section.
+ (elf_symfile_read): Call elfctf_build_psymtabs.
+ * gdb/Makefile.in (LIBCTF): Add.
+ (CLIBS): Use it.
+ (CDEPS): Likewise.
+ (DIST): Add ctfread.c.
+ * Makefile.def (dependencies): Add all-libctf to all-gdb
+ * Makefile.in: Add "all-gdb: maybe-all-libctf"
+
gdb/testsuite/ChangeLog
+2019-10-07 Weimin Pan <weimin.pan@oracle.com>
+
+ * gdb.base/ctf-whatis.exp: New file.
+ * gdb.base/ctf-whatis.c: New file.
+ * gdb.base/ctf-ptype.exp: New file.
+ * gdb.base/ctf-ptype.c: New file.
+ * gdb.base/ctf-constvars.exp: New file.
+ * gdb.base/ctf-constvars.c: New file.
+ * gdb.base/ctf-cvexpr.exp: New file.
+
This lets other programs read and write CTF-format data.
Two versioned shared libraries are created: libctf.so and
libctf-nobfd.so. They contain identical content except that
libctf-nobfd.so contains no references to libbfd and does not implement
ctf_open, ctf_fdopen, ctf_bfdopen or ctf_bfdopen_ctfsect, so it can be
used by programs that cannot use BFD, like readelf.
The soname major version is presently .0 until the linker API
stabilizes, when it will flip to .1 and hopefully never change again.
New in v3.
v4: libtoolize and turn into a pair of shared libraries. Drop
--enable-install-ctf: now controlled by --enable-shared and
--enable-install-libbfd, like everything else.
v5: Add ../bfd to ACLOCAL_AMFLAGS and AC_CONFIG_MACRO_DIR. Fix tabdamage.
* Makefile.def (host_modules): libctf is no longer no_install.
* Makefile.in: Regenerated.
libctf/
* configure.ac (AC_DISABLE_SHARED): New, like opcodes/.
(LT_INIT): Likewise.
(AM_INSTALL_LIBBFD): Likewise.
(dlopen): Note why this is necessary in a comment.
(SHARED_LIBADD): Initialize for possibly-PIC libiberty: derived from
opcodes/.
(SHARED_LDFLAGS): Likewise.
(BFD_LIBADD): Likewise, for libbfd.
(BFD_DEPENDENCIES): Likewise.
(VERSION_FLAGS): Initialize, using a version script if ld supports
one, or libtool -export-symbols-regex otherwise.
(AC_CONFIG_MACRO_DIR): Add ../BFD.
* Makefile.am (ACLOCAL_AMFLAGS): Likewise.
(INCDIR): New.
(AM_CPPFLAGS): Use $(srcdir), not $(top_srcdir).
(noinst_LIBRARIES): Replace with...
[INSTALL_LIBBFD] (lib_LTLIBRARIES): This, or...
[!INSTALL_LIBBFD] (noinst_LTLIBRARIES): ... this, mentioning new
libctf-nobfd.la as well.
[INSTALL_LIBCTF] (include_HEADERS): Add the CTF headers.
[!INSTALL_LIBCTF] (include_HEADERS): New, empty.
(libctf_a_SOURCES): Rename to...
(libctf_nobfd_la_SOURCES): ... this, all of libctf other than
ctf-open-bfd.c.
(libctf_la_SOURCES): Now derived from libctf_nobfd_la_SOURCES,
with ctf-open-bfd.c added.
(libctf_nobfd_la_LIBADD): New, using @SHARED_LIBADD@.
(libctf_la_LIBADD): New, using @BFD_LIBADD@ as well.
(libctf_la_DEPENDENCIES): New, using @BFD_DEPENDENCIES@.
* Makefile.am [INSTALL_LIBCTF]: Use it.
* aclocal.m4: Add ../bfd/acinclude.m4, ../config/acx.m4, and the
libtool macros.
* libctf.ver: New, everything is version LIBCTF_1.0 currently (even
the unstable components).
* Makefile.in: Regenerated.
* config.h.in: Likewise.
* configure: Likewise.
binutils/
* Makefile.am (LIBCTF): Mention the .la file.
(LIBCTF_NOBFD): New.
(readelf_DEPENDENCIES): Use it.
(readelf_LDADD): Likewise.
* Makefile.in: Regenerated.
ld/
* configure.ac (TESTCTFLIB): Set to the .so or .a, like TESTBFDLIB.
* Makefile.am (TESTCTFLIB): Use it.
(LIBCTF): Use the .la file.
(check-DEJAGNU): Use it.
* Makefile.in: Regenerated.
* configure: Likewise.
include/
* ctf-api.h: Note the instability of the ctf_link interfaces.
This is quite complicated because the CTF section's contents depend on
the final contents of the symtab and strtab, because it has two sections
whose contents are shuffled to be in 1:1 correspondence with the symtab,
and an internal strtab that gets deduplicated against the ELF strtab
(with offsets adjusted to point into the ELF strtab instead). It is
also compressed if large enough, so its size depends on its contents!
So we cannot construct it as early as most sections: we cannot even
*begin* construction until after the symtab and strtab are finalized.
Thankfully there is already one section treated similarly: compressed
debugging sections: the only differences are that compressed debugging
sections have extra handling to deal with their changing name if
compressed (CTF sections are always called ".ctf" for now, though we
have reserved ".ctf.*" against future use), and that compressed
debugging sections have previously-uncompressed content which has to be
stashed away for later compression, while CTF sections have no content
at all until we generate it (very late).
BFD also cannot do the link itself: libctf knows how to do it, and BFD
cannot call libctf directly because libctf already depends on bfd for
file I/O. So we have to use a pair of callbacks, one, examine_strtab,
which allows a caller to examine the symtab and strtab after
finalization (called from elf_link_swap_symbols_out(), right before the
symtabs are written, and after the strtab has been finalized), and one
which actually does the emission (called emit_ctf simply because it is
grouped with a bunch of section-specific late-emission function calls at
the bottom of bfd_elf_final_link, and a section-specific name seems best
for that). emit_ctf is actually called *twice*: once from lang_process
if the emulation suggests that this bfd target does not examine the
symtab or strtab, and once via a bfd callback if it does. (This means
that non-ELF targets still get CTF emitted, even though the late CTF
emission stage is never called for them).
v2: merged with non-ELF support patch: slight commit message
adjustments.
v3: do not spend time merging CTF, or crash, if the CTF section is
explicitly discarded. Do not try to merge or compress CTF unless
linking.
v4: add CTF_COMPRESSION_THRESHOLD. Annul the freed input ctf_file_t's
after writeout: set SEC_IN_MEMORY on the output contents so a future
bfd enhancement knows it could free it. Add SEC_LINKER_CREATED |
SEC_KEEP to avoid having to add .ctf to the linker script. Drop
now-unnecessary ldlang.h-level elf-bfd.h include and hackery around
it. Adapt to elf32.em->elf.em and elf-generic.em->ldelf*.c
changes.
v5: fix tabdamage. Drop #inclusions in .h files: include in .c files,
.em files, and use struct forwards instead. Use bfd_section_is_ctf
inline function rather than SECTION_IS_CTF macro. Move a few
comments.
* Makefile.def (dependencies): all-ld depends on all-libctf.
* Makefile.in: Regenerated.
include/
* bfdlink.h (elf_strtab_hash): New forward.
(elf_sym_strtab): Likewise.
(struct bfd_link_callbacks <examine_strtab>): New.
(struct bfd_link_callbacks <emit_ctf>): Likewise.
bfd/
* elf-bfd.h (bfd_section_is_ctf): New inline function.
* elf.c (special_sections_c): Add ".ctf".
(assign_file_positions_for_non_load_sections): Note that
compressed debugging sections etc are not assigned here. Treat
CTF sections like SEC_ELF_COMPRESS sections when is_linker_output:
sh_offset -1.
(assign_file_positions_except_relocs): Likewise.
(find_section_in_list): Note that debugging and CTF sections, as
well as reloc sections, are assigned later.
(_bfd_elf_assign_file_positions_for_non_load): CTF sections get
their size and contents updated.
(_bfd_elf_set_section_contents): Skip CTF sections: unlike
compressed sections, they have no uncompressed content to copy at
this stage.
* elflink.c (elf_link_swap_symbols_out): Call the examine_strtab
callback right before the strtab is written out.
(bfd_elf_final_link): Don't cache the section contents of CTF
sections: they are not populated yet. Call the emit_ctf callback
right at the end, after all the symbols and strings are flushed
out.
ld/
* ldlang.h: (struct lang_input_statement_struct): Add the_ctf.
(struct elf_sym_strtab): Add forward.
(struct elf_strtab_hash): Likewise.
(ldlang_ctf_apply_strsym): Declare.
(ldlang_write_ctf_late): Likewise.
* ldemul.h (ldemul_emit_ctf_early): New.
(ldemul_examine_strtab_for_ctf): Likewise.
(ld_emulation_xfer_type) <emit_ctf_early>: Likewise.
(ld_emulation_xfer_type) <examine_strtab_for_ctf>: Likewise.
* ldemul.c (ldemul_emit_ctf_early): New.
(ldemul_examine_strtab_for_ctf): Likewise.
* ldlang.c: Include ctf-api.h.
(CTF_COMPRESSION_THRESHOLD): New.
(ctf_output): New. Initialized in...
(ldlang_open_ctf): ... this new function. Open all the CTF
sections in the input files: mark them non-loaded and empty
so as not to copy their contents to the output, but linker-created
so the section gets created in the target.
(ldlang_merge_ctf): New, merge types via ctf_link_add_ctf and
ctf_link.
(ldlang_ctf_apply_strsym): New, an examine_strtab callback: wrap
ldemul_examine_strtab_for_ctf.
(lang_write_ctf): New, write out the CTF section.
(ldlang_write_ctf_late): New, late call via bfd's emit_ctf hook.
(lang_process): Call ldlang_open_ctf, ldlang_merge_ctf, and
lang_write_ctf.
* ldmain.c (link_callbacks): Add ldlang_ctf_apply_strsym,
ldlang_write_ctf_late.
* emultempl/aix.em: Add ctf-api.h.
* emultempl/armcoff.em: Likewise.
* emultempl/beos.em: Likewise.
* emultempl/elf.em: Likewise.
* emultempl/generic.em: Likewise.
* emultempl/linux.em: Likewise.
* emultempl/msp430.em: Likewise.
* emultempl/pe.em: Likewise.
* emultempl/pep.em: Likewise.
* emultempl/ticoff.em: Likewise.
* emultempl/vanilla.em: Likewise.
* ldcref.c: Likewise.
* ldctor.c: Likewise.
* ldelf.c: Likewise.
* ldelfgen.c: Likewise.
* ldemul.c: Likewise.
* ldexp.c: Likewise.
* ldfile.c: Likewise.
* ldgram.c: Likewise.
* ldlex.l: Likewise.
* ldmain.c: Likewise.
* ldmisc.c: Likewise.
* ldver.c: Likewise.
* ldwrite.c: Likewise.
* lexsup.c: Likewise.
* mri.c: Likewise.
* pe-dll.c: Likewise.
* plugin.c: Likewise.
* ldelfgen.c (ldelf_emit_ctf_early): New.
(ldelf_examine_strtab_for_ctf): tell libctf about the symtab and
strtab.
(struct ctf_strsym_iter_cb_arg): New, state to do so.
(ldelf_ctf_strtab_iter_cb): New: tell libctf about
each string in the strtab in turn.
(ldelf_ctf_symbols_iter_cb): New, tell libctf
about each symbol in the symtab in turn.
* ldelfgen.h (struct elf_sym_strtab): Add forward.
(struct elf_strtab_hash): Likewise.
(struct ctf_file): Likewise.
(ldelf_emit_ctf_early): Declare.
(ldelf_examine_strtab_for_ctf): Likewise.
* emultempl/elf-generic.em (LDEMUL_EMIT_CTF_EARLY): Set it.
(LDEMUL_EXAMINE_STRTAB_FOR_CTF): Likewise.
* emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add
emit_ctf_early and examine_strtab_for_ctf, NULL by default.
* emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/elf.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/linux.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise.
* emultempl/vanilla.em (ld_vanilla_emulation): Likewise.
* Makefile.am: Pull in libctf (and zlib, a transitive requirement
for compressed CTF section emission). Pass it on to DejaGNU.
* configure.ac: Add AM_ZLIB.
* aclocal.m4: Added zlib.m4.
* Makefile.in: Regenerated.
* testsuite/ld-bootstrap/bootstrap.exp: Use it when relinking ld.
This patch moves the gdb/gnulib subdirectory to the top level.
It adjusts the top-level build system to build gnulib when necessary,
and changes gdb to use this. However, gdbserver still builds its own
copy of gnulib, just from the new source location.
A small hack was needed to ensure that gnulib is only built when gdb
is enabled. The Makefile only provides an ordering -- the directory
must be mentioned in configdirs to actually be compiled at all.
Most of the patch is just a "git mv" of gnulib, though a few minor
path adjustments were needed in some files there.
Tested by the buildbot.
ChangeLog
2019-06-14 Tom Tromey <tom@tromey.com>
* MAINTAINERS: Add gnulib.
* gnulib: New directory, move from gdb/gnulib.
* configure.ac (host_libs): Add gnulib.
* configure: Rebuild.
* Makefile.def (host_modules, dependencies): Add gnulib.
* Makefile.in: Rebuild.
gdb/ChangeLog
2019-06-14 Tom Tromey <tom@tromey.com>
* gnulib: Move directory to top-level.
* configure.ac: Don't configure gnulib.
* configure: Rebuild.
* common/common-defs.h: Use new path to gnulib.
* Makefile.in (GNULIB_BUILDDIR): Now ../gnulib.
(GNULIB_H): Remove.
(INCGNU): Look in new gnulib location.
(HFILES_NO_SRCDIR): Remove gnulib files.
(SUBDIR, REQUIRED_SUBDIRS): Remove gnulib.
(generated_files): Remove GNULIB_H.
($(LIBGNU), all-lib): Remove targets.
(distclean): Don't mention GNULIB_BUILDDIR.
($(GNULIB_BUILDDIR)/Makefile): Remove target.
gdb/gdbserver/ChangeLog
2019-06-14 Tom Tromey <tom@tromey.com>
* configure.ac: Use new path to gnulib.
* configure: Rebuild.
* Makefile.in (INCGNU, $(GNULIB_BUILDDIR)/Makefile): Use new path
to gnulib.
gnulib/ChangeLog
2019-06-14 Tom Tromey <tom@tromey.com>
* update-gnulib.sh: Adjust paths.
* Makefile.in: Adjust paths.
* configure.ac: Adjust paths. Use ACX_LARGEFILE.
* configure: Rebuild.
top * Makefile.def (target_modules): Add libphobos.
(flags_to_pass): Add GDC, GDCFLAGS, GDC_FOR_TARGET and
GDCFLAGS_FOR_TARGET.
(dependencies): Make libphobos depend on libatomic, libbacktrace
configure, and zlib configure.
(language): Add language d.
* Makefile.in: Rebuild.
* Makefile.tpl (BUILD_EXPORTS): Add GDC and GDCFLAGS.
(HOST_EXPORTS): Add GDC.
(POSTSTAGE1_HOST_EXPORTS): Add GDC and GDC_FOR_BUILD.
(BASE_TARGET_EXPORTS): Add GDC.
(GDC_FOR_BUILD, GDC, GDCFLAGS): New variables.
(GDC_FOR_TARGET, GDC_FLAGS_FOR_TARGET): New variables.
(EXTRA_HOST_FLAGS): Add GDC.
(STAGE1_FLAGS_TO_PASS): Add GDC.
(EXTRA_TARGET_FLAGS): Add GDC and GDCFLAGS.
* config-ml.in: Treat GDC and GDCFLAGS like other compiler/flag
environment variables.
* configure: Rebuild.
* configure.ac: Add target-libphobos to target_libraries. Set and
substitute GDC_FOR_BUILD and GDC_FOR_TARGET.
All machinery works as on ELF, except for automatic loading of ELF
string and symbol tables in the BFD-style open machinery.
* Makefile.def (dependencies): configure-libctf depends on all-bfd
and all its deps.
* Makefile.in: Regenerated.
libctf/
* configure.in: Check for bfd_section_from_elf_index.
* configure: Regenerate.
* config.h.in [HAVE_BFD_ELF]: Likewise.
* libctf/ctf_open_bfd (ctf_bfdopen_ctfsect): Use it.
abfd is potentially unused now.
This ties libctf into the build system, and makes binutils depend on it
(used by the next commits).
* Makefile.def (host_modules): Add libctf.
* Makefile.def (dependencies): Likewise.
libctf depends on zlib, libiberty, and bfd.
* Makefile.in: Regenerated.
* configure.ac (host_libs): Add libctf.
* configure: Regenerated.
libctf/
* Makefile.am: New.
* Makefile.in: Regenerated.
* config.h.in: Likewise.
* aclocal.m4: Likewise.
* configure: Likewise.
* configure.ac: Update year in copyright notice.
Sync from FSF GCC mainline, bringing in the following patches.
* Makefile.def: Likewise.
* Makefile.tpl: Likewise.
* configure: Regenerate.
* Makefile.in: Regenerate.
2016-12-21 Jakub Jelinek <jakub@redhat.com>
* configure.ac: Don't bootstrap libmpx unless --with-build-config
includes bootstrap-mpx.
2016-12-01 Matthias Klose <doko@ubuntu.com>
* configure.ac: Don't use pkg-config to check for bdw-gc.
2016-11-30 Matthias Klose <doko@ubuntu.com>
* Makefile.def: Remove reference to boehm-gc target module.
* configure.ac: Include pkg.m4, check for --with-target-bdw-gc
options and for the bdw-gc pkg-config module.
2016-11-15 Matthias Klose <doko@ubuntu.com>
* config-ml.in: Remove references to GCJ.
* configure.ac: Likewise.
2016-09-30 Jakub Jelinek <jakub@redhat.com>
* configure.ac: Add target-libffi to target_libraries.
Readd libgcj target disablings, modified to only target-libffi.
Readd target addition of go to unsupported languages.
2016-09-30 Andrew Haley <aph@redhat.com>
* Makefile.def: Remove libjava.
* Makefile.tpl: Likewise.
* configure.ac: Likewise.
2016-09-26 Anton Kolesov <Anton.Kolesov@synopsys.com>
* configure.ac: Disable "sim" directory for arc*-*-*.
2016-09-12 Maciej W. Rozycki <macro@imgtec.com>
* configure.ac: Check for the minimum in-tree MPFR version
handled.
When bfd is configured as a shared library, we need to configure zlib
with --enable-host-shared since zlib is used by bfd.
PR ld/18355
* Makefile.def: Add extra_configure_flags to host zlib.
* configure.ac (extra_host_zlib_configure_flags): New. Set
to --enable-host-shared When bfd is to be built as shared
library. AC_SUBST.
* Makefile.in: Regenerated.
* configure: Likewise.
because it needs to windres tool (for some targets).
* Makefile.def (dependencies): Make all-ld depend on all-binutils
for WINDRES_FOR_TARGET in default-manifest.o rule.
* Makefile.in: Regenerate.
