gcov_info::n_functions type is initialized by generated
code in build_info_type:
/* n_functions */
field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE,
get_gcov_unsigned_t ());
It uses gcov_unsigned_t, but the struct definition in libgcov.h uses
unsigned type. That brings troubled on 16-bit targets.
PR gcov-profile/105535
libgcc/ChangeLog:
* libgcov.h (struct gcov_info): Use gcov_unsigned_t for
n_functions.
Co-Authored-By: Hans-Peter Helfert <peter-helfert@t-online.de>
This allows to reuse read_gcda_file() to read multiple objects from a single
file.
libgcc/
* libgcov-util.c (read_gcda_file): Do not open file.
(ftw_read_file): Open file here.
This helps to reuse read_gcda_file().
libgcc/
* libgcov-util.c (read_gcda_file): Prepend new info object to global
list.
(ftw_read_file): Remove list append here.
Move duplication of filename to caller and use xstrdup() instead of custom
code. This helps to reuse read_gcda_file() for other purposes.
libgcc/
* libgcov-util.c (read_gcda_file): Do not duplicate filename.
(ftw_read_file): Duplicate filename for read_gcda_file().
gcc/
* doc/invoke.texi (fprofile-info-section): Mention
__gcov_filename_to_gcfn(). Use "freestanding" to match with C11
standard language. Fix minor example code issues.
* gcov-io.h (GCOV_FILENAME_MAGIC): Define and document.
gcc/testsuite/
* gcc.dg/gcov-info-to-gcda.c: Test __gcov_filename_to_gcfn().
libgcc/
* gcov.h (__gcov_info_to_gcda): Mention __gcov_filename_to_gcfn().
(__gcov_filename_to_gcfn): Declare and document.
* libgcov-driver.c (dump_string): New.
(__gcov_filename_to_gcfn): Likewise.
(__gcov_info_to_gcda): Adjust comment to match C11 standard language.
This function is only used by gcov_write_length() in the gcov-io.cc file.
gcc/
* gcov-io.cc (gcov_seek): Make it static.
* gcov-io.h (struct gcov_summary): Do not mention gcov_seek().
libgcc/
* libgcov.h (gcov_seek): Remove define and declaration.
gcc/
* gcov-io.cc (gcov_open): Always use the mode parameter.
* gcov-io.h (gcov_open): Declare it unconditionally.
libgcc/
* libgcov-driver-system.c (gcov_exit_open_gcda_file): Open file for
reading and writing.
* libgcov-util.c (read_gcda_file): Open file for reading.
* libgcov.h (gcov_open): Delete declaration.
The gcov_profile_merge() already had code to deal with profile information
which had no counterpart to merge with. For profile information from files
with no associated counterpart, the profile information is simply used as is
with the weighting transformation applied. Make sure that gcov_profile_merge()
works with an empty target profile list. Return the merged profile list.
gcc/
* gcov-tool.cc (gcov_profile_merge): Adjust return type.
(profile_merge): Allow merging of directories which contain no profile
files.
libgcc/
* libgcov-util.c (gcov_profile_merge): Return the list of merged
profiles. Accept empty target and source profile lists.
In --without-headers mode gcc fails to bootstrap on libgcc as:
/build/build/./gcc/xgcc -B/build/build/./gcc/ ... -Dinhibit_libc -c fde-glibc.c
../../../gcc-12-20220403/libgcc/config/ia64/fde-glibc.c:33:10:
fatal error: stdlib.h: No such file or directory
Most other linux targets are able to build the --without-headers
compiler without additional effort. This change adds IA64 to the fold.
The change drops part of the code that relies on DYNAMIC glibc
section traversal for backtraces.
Tested bootstrap of ia64-unknown-linux-gnu with and without libc
headers present.
libgcc/
* config/ia64/fde-glibc.c: Make a no-op in inhibit_libc mode.
libgcc/
PR libgcc/86224
* config/m68k/lb1sf68.S (__mulsi3_internal): Internal, hidden alias
for __mulsi3.
(__udivsi3_internal, __divsi3_internal): Similarly.
(__umodsi3, __modsi3): Use the internal function names.
libgcc/ChangeLog:
PR target/102215
* config/gcn/atomic.c (__sync_val_compare_and_swap_##SIZE): Move
a line up to non-arg-dependent value first.
(__ATOMIC_COMPARE_EXCHANGE): Define + call to generate
__atomic_compare_exchange_{1,2}.
PowerPC Darwin8 is the last version to use an unwind frame fallback routine.
This had been omitted from the new shared EH library, along with one more
header dependency that only fires there.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
libgcc/ChangeLog:
* config/rs6000/t-darwin-ehs: Add darwin-fallback.o.
* config/t-darwin-ehs: Add dependency on unwind.h.
The third parameter of find_fde_tail is an _Unwind_Ptr (which is an
integer type instead of a pointer), but we are passing NULL to it. This
causes a -Wint-conversion warning.
libgcc/
* unwind-dw2-fde-dip.c (_Unwind_Find_FDE): Call find_fde_tail
with 0 instead of NULL.
This patch changes the build machinery in order to disable the build
of GCOV (both compiler and libgcc) in bpf-*-* targets. The reason for
this change is that BPF is (currently) too restricted in order to
support the coverage instrumentalization.
Tested in bpf-unknown-none and x86_64-linux-gnu targets.
2022-02-23 Jose E. Marchesi <jose.marchesi@oracle.com>
gcc/ChangeLog
PR target/104656
* configure.ac: --disable-gcov if targetting bpf-*.
* configure: Regenerate.
libgcc/ChangeLog
PR target/104656
* configure.ac: --disable-gcov if targetting bpf-*.
* configure: Regenerate.
_dl_find_object returns success even if no unwind information has been
found, and dlfo_eh_frame is NULL.
libgcc/ChangeLog:
PR libgcc/104207
* unwind-dw2-fde-dip.c (_Unwind_Find_FDE): Add NULL check.
2022-01-14 David <gccbugzilla@limegreensocks.com>
libgcc/
* config/i386/gthr-win32.c (__gthr_i486_lock_cmp_xchg):
Remove inlined version, Windows 95 is no longer relevant.
* config/i386/gthr-win32.h
(__GTHREAD_I486_INLINE_LOCK_PRIMITIVES): unset.
Add DWARF 2 CFA column which tracks the return address from a signal
handler context. This value must not correspond to a hard register
and must be out of the range of DWARF_FRAME_REGNUM().
gcc/
* config/arc/arc.h (DWARF_FRAME_REGNUM): Update definition.
(DWARF_FRAME_RETURN_COLUMN): Use RETURN_ADDR_REGNUM macro.
(INCOMING_RETURN_ADDR_RTX): Likewise.
(DWARF_ALT_FRAME_RETURN_COLUMN): Define.
gcc/testsuite/
* gcc.target/arc/cancel-1.c: New file.
libgcc/
* config/arc/linux-unwind.h (arc_fallback_frame_state): Use
DWARF_ALT_FRAME_RETURN_COLUMN macro.
Signed-off-by: Claudiu Zissulescu <claziss@synopsys.com>
2022-01-02 John David Anglin <danglin@gcc.gnu.org>
libgcc/ChangeLog:
* config/pa/linux-atomic.c (_ASM_EFAULT): Define.
(__kernel_cmpxchg): Nullify illegal iitlbp instruction if error
return is not equal _ASM_EFAULT.
(__kernel_cmpxchg2): Likewise.
There was a race condition where the link for the new shared EH library
(only used on earlier Darwin) could fail because the new crts had not been
copied to the gcc directory. This can cause a build failure (although
currently only seen on powerpc-darwin).
Fixed by adding specific dependency on the crts and on the multi target.
We also add the declaration header for the Darwin10 unwinder shim to the
powerpc cases, since we build that there for Rosetta use.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
libgcc/ChangeLog:
* config.host: Add shim declaration header to powerpc*-darwin builds.
* config/rs6000/t-darwin-ehs: Remove dependency on the powerpc end
file.
* config/t-darwin-ehs: Add dependencies to the shared unwinder
objects.
* config/t-slibgcc-darwin: Add extra_parts to the dependencies for
the shared EH lib. Add all-multi to the dependencies for the
libgcc_s.1.dylib redirections.
t-linux assigns .so version numbers to a set of
symbols, some of which aren't included the VxWorks libgcc
on powerpc (from ibm-ldouble.c, in particular).
t-slibgcc-libgcc yields a kind of .so file that the default
loader can't handle. This sort of extension to tmake_file for
shared libs will be better handled in a grouped fashion for
all targets anyway.
2021-12-13 Olivier Hainque <hainque@adacore.com>
* config.host (powerpc*-*-vxworks7*): Remove
rs6000/t-linux and t-slibgcc-libgcc from tmake_file.
