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2020-02-10Move ChangeLog entry of commit bf6465d046 from gcc to libgccH.J. Lu1-0/+6
2020-02-10i386: Properly pop restore token in signal frameH.J. Lu1-0/+43
Linux CET kernel places a restore token on shadow stack for signal handler to enhance security. The restore token is 8 byte and aligned to 8 bytes. It is usually transparent to user programs since kernel will pop the restore token when signal handler returns. But when an exception is thrown from a signal handler, now we need to pop the restore token from shadow stack. For x86-64, we just need to treat the signal frame as normal frame. For i386, we need to search for the restore token to check if the original shadow stack is 8 byte aligned. If the original shadow stack is 8 byte aligned, we just need to pop 2 slots, one restore token, from shadow stack. Otherwise, we need to pop 3 slots, one restore token + 4 byte padding, from shadow stack. This patch also includes 2 tests, one has a restore token with 4 byte padding and one without. Tested on Linux/x86-64 CET machine with and without -m32. libgcc/ PR libgcc/85334 * config/i386/shadow-stack-unwind.h (_Unwind_Frames_Increment): New. gcc/testsuite/ PR libgcc/85334 * g++.target/i386/pr85334-1.C: New test. * g++.target/i386/pr85334-2.C: Likewise.
2020-02-10arm: Fix up arm installed unwind.h for use in pedantic modes [PR93615]Christophe Lyon3-5/+12
Commit r10-6500-g811a475ea3fcc55ee4aea7c81171891ef19dfc25 broke the GCC build for arm-none-uclinuxfdpiceabi, as it forgot to update some uses of gnu_Unwind_Find_got. 2020-02-10 Christophe Lyon <christophe.lyon@linaro.org> libgcc/ PR target/93615 * unwind-arm-common.inc: Replace uses of gnu_Unwind_Find_got with _Unwind_gnu_Find_got. * unwind-pe.h: Likewise.
2020-02-07arm: Fix up arm installed unwind.h for use in pedantic modes [PR93615]Jakub Jelinek2-9/+13
As the following testcase shows, unwind.h on ARM can't be (starting with GCC 10) compiled with -std=c* modes, only -std=gnu* modes. The problem is it uses asm keyword, which isn't a keyword in those modes (system headers vs. non-system ones don't make a difference here). glibc and other installed headers use __asm or __asm__ keywords instead that work fine in both standard and gnu modes. While there, as it is an installed header, I think it is also wrong to completely ignore any identifier namespace rules. The generic unwind.h defines just _Unwind* namespace identifiers plus _sleb128_t/_uleb128_t (but e.g. unlike libstdc++/glibc headers doesn't uglify operand names), the ARM unwind.h is much worse here. I've just changed the gnu_Unwind_Find_got function at least not be in user identifier namespace, but perhaps it would be good to go further and rename e.g. or e.g. typedef _Unwind_Reason_Code (*personality_routine) (_Unwind_State, _Unwind_Control_Block *, _Unwind_Context *); in unwind-arm-common.h. 2020-02-07 Jakub Jelinek <jakub@redhat.com> PR target/93615 * config/arm/unwind-arm.h (gnu_Unwind_Find_got): Rename to ... (_Unwind_gnu_Find_got): ... this. Use __asm instead of asm. Remove trailing :s in asm. Formatting fixes. (_Unwind_decode_typeinfo_ptr): Adjust caller. * gcc.dg/pr93615.c: New test.
2020-01-31nios2: Support for GOT-relative DW_EH_PE_datarel encoding.Sandra Loosemore4-2/+36
On nios2-linux-gnu, there has been a long-standing bug in C++ exception handling that sometimes resulted in link errors like ../nios2-linux-gnu/bin/ld: FDE encoding in /tmp/cccfpQ2l.o(.eh_frame) prevents .eh_frame_hdr table being created when building some shared libraries or PIE executables. The root of the problem is that GCC was incorrectly emitting an absolute encoding in EH tables for PIC. This patch changes it to use either DW_EH_PE_indirect (for global) or DW_EH_PE_datarel (for local), and fixes libgcc so it can find the address of the GOT as the base address for DW_EH_PE_datarel. Complicating matters somewhat, GAS was missing support for %gotoff(symbol) relocation syntax. I have just pushed a fix for that, but I've added a configure check to test for presence of the binutils support and fall back to the current absolute encoding (which works most of the time) if it is not available. Once the fix makes it into an official binutils release it might be appropriate to make this error out instead. Since this is a wrong-code bug and affects only nios2 target, I think this is appropriate for Stage 4. I regression-tested on both nios2-linux-gnu and nios2-elf, with and without the binutils support present, before committing this. 2020-01-31 Sandra Loosemore <sandra@codesourcery.com> gcc/ * configure.ac [nios2-*-*]: Check HAVE_AS_NIOS2_GOTOFF_RELOCATION. * config.in: Regenerated. * configure: Regenerated. * config/nios2/nios2.h (ASM_PREFERRED_EH_DATA_FORMAT): Fix handling for PIC when HAVE_AS_NIOS2_GOTOFF_RELOCATION. (ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX): New. gcc/testsuite/ * g++.target/nios2/hello-pie.C: New. * g++.target/nios2/nios2.exp: New. libgcc/ * config.host [nios2-*-linux*] (tmake_file, tm_file): Adjust. * config/nios2-elf-lib.h: New. * unwind-dw2-fde-dip.c (_Unwind_IteratePhdrCallback): Use existing code for finding GOT base for nios2.
2020-01-27Add __gcov_indirect_call_profiler_v4_atomic.Martin Liska3-3/+31
PR gcov-profile/93403 * tree-profile.c (gimple_init_gcov_profiler): Generate both __gcov_indirect_call_profiler_v4 and __gcov_indirect_call_profiler_v4_atomic. PR gcov-profile/93403 * libgcov-profiler.c (__gcov_indirect_call_profiler_v4): Call __gcov_indirect_call_profiler_body. (__gcov_indirect_call_profiler_body): New. (__gcov_indirect_call_profiler_v4_atomic): New. * libgcov.h (__gcov_indirect_call_profiler_v4_atomic): New declaration.
2020-01-27[ARC] Make libgcc compatible with ARC's reduced register set config.Claudiu Zissulescu8-17/+130
ARC processors can work with a reduced register set (i.e. registers r4-r9 and r16-r25 are not available). This option can be enabled passing -mrf16 option to the compiler, or by using -mcpu=em_mini CPU configuration. Using RF16 config requires all the hand-made assembly files used in libgcc to have the corresponding RF16 object attribute set. This patch qualifies the relevant hand-made assembly files to RF16 config, and also adds generic c-functions for the one which are not. libgcc/ xxxx-xx-xx Claudiu Zissulescu <claziss@synopsys.com> * config/arc/crti.S: Add RF16 object attribute. * config/arc/crtn.S: Likewise. * config/arc/crttls.S: Likewise. * config/arc/lib1funcs.S: Likewise. * config/arc/fp-hack.h (ARC_OPTFPE): Define. * config/arc/lib2funcs.c: New file. * config/arc/t-arc: Add lib2funcs to LIB2ADD.
2020-01-24Add `--with-toolexeclibdir=' configuration optionMaciej W. Rozycki4-6/+64
Provide means, in the form of a `--with-toolexeclibdir=' configuration option, to override the default installation directory for target libraries, otherwise known as $toolexeclibdir. This is so that it is possible to get newly-built libraries, particularly the shared ones, installed in a common place, so that they can be readily used by the target system as their host libraries, possibly over NFS, without a need to manually copy them over from the currently hardcoded location they would otherwise be installed in. In the presence of the `--enable-version-specific-runtime-libs' option and for configurations building native GCC the option is ignored. config/ * toolexeclibdir.m4: New file. gcc/ * doc/install.texi (Cross-Compiler-Specific Options): Document `--with-toolexeclibdir' option. libada/ * Makefile.in (configure_deps): Add `toolexeclibdir.m4'. * configure.ac: Handle `--with-toolexeclibdir='. * configure: Regenerate. libatomic/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * testsuite/Makefile.in: Regenerate. libffi/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * include/Makefile.in: Regenerate. * man/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate. libgcc/ * Makefile.in (configure_deps): Add `toolexeclibdir.m4'. * configure.ac: Handle `--with-toolexeclibdir='. * configure: Regenerate. libgfortran/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. libgomp/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * testsuite/Makefile.in: Regenerate. libhsail-rt/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. libitm/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * testsuite/Makefile.in: Regenerate. libobjc/ * Makefile.in (aclocal_deps): Add `toolexeclibdir.m4'. * aclocal.m4: Include `toolexeclibdir.m4'. * configure.ac: Handle `--with-toolexeclibdir='. * configure: Regenerate. liboffloadmic/ * plugin/configure.ac: Handle `--with-toolexeclibdir='. * plugin/Makefile.in: Regenerate. * plugin/aclocal.m4: Regenerate. * plugin/configure: Regenerate. * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. libphobos/ * m4/druntime.m4: Handle `--with-toolexeclibdir='. * m4/Makefile.in: Regenerate. * libdruntime/Makefile.in: Regenerate. * src/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. libquadmath/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. libsanitizer/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * asan/Makefile.in: Regenerate. * interception/Makefile.in: Regenerate. * libbacktrace/Makefile.in: Regenerate. * lsan/Makefile.in: Regenerate. * sanitizer_common/Makefile.in: Regenerate. * tsan/Makefile.in: Regenerate. * ubsan/Makefile.in: Regenerate. libssp/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. libstdc++-v3/ * acinclude.m4: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * doc/Makefile.in: Regenerate. * include/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * python/Makefile.in: Regenerate. * src/Makefile.in: Regenerate. * src/c++11/Makefile.in: Regenerate. * src/c++17/Makefile.in: Regenerate. * src/c++98/Makefile.in: Regenerate. * src/filesystem/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate. libvtv/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * testsuite/Makefile.in: Regenerate. zlib/ * configure.ac: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate.
2020-01-24libgcov: Fix merging of topn [PR92924]Jan Hubicka1-9/+16
PR tree-optimization/92924 * libgcov-merge.c (merge_topn_values_set): Fix merging.
2020-01-23Emit .note.GNU-stack for hard-float linux targets.Dragan Mladjenovic2-1/+5
libgcc/ChangeLog: 2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com> * config/mips/gnustack.h: Check for TARGET_LIBC_GNUSTACK also. gcc/ChangeLog: 2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com> * config.in: Regenerated. * config/mips/linux.h (NEED_INDICATE_EXEC_STACK): Define to 1 for TARGET_LIBC_GNUSTACK. * configure: Regenerated. * configure.ac: Define TARGET_LIBC_GNUSTACK if glibc version is found to be 2.31 or greater.
2020-01-23Emit .note.GNU-stack for soft-float linux targets.Dragan Mladjenovic6-0/+27
gcc/ChangeLog: 2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com> * config/mips/linux.h (NEED_INDICATE_EXEC_STACK): Define to TARGET_SOFT_FLOAT. * config/mips/mips.c (TARGET_ASM_FILE_END): Define to ... (mips_asm_file_end): New function. Delegate to file_end_indicate_exec_stack if NEED_INDICATE_EXEC_STACK is true. * config/mips/mips.h (NEED_INDICATE_EXEC_STACK): Define to 0. libgcc/ChangeLog: 2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com> * config/mips/gnustack.h: New file. * config/mips/crti.S: Include gnustack.h. * config/mips/crtn.S: Likewise. * config/mips/mips16.S: Likewise. * config/mips/vr4120-div.S: Likewise.
2020-01-23Remove wrong bail out in prune_topn_counter.Martin Liska2-10/+11
* libgcov-driver.c (prune_topn_counter): Remove check for -1 as we only prune run-time counters that do not generate an invalid state.
2020-01-22Fix TOP N counter update.Martin Liska2-22/+31
PR tree-optimization/92924 * libgcov-profiler.c (__gcov_topn_values_profiler_body): First try to find an existing value, then find an empty slot if not found.
2020-01-22Smart relaxation of TOP N counter.Martin Liska3-17/+77
PR tree-optimization/92924 * profile.c (compute_value_histograms): Divide all counter values. PR tree-optimization/92924 * libgcov-driver.c (prune_topn_counter): New. (prune_counters): Likewise. (dump_one_gcov): Prune a run-time counter. * libgcov-profiler.c (__gcov_topn_values_profiler_body): For a known value, add GCOV_TOPN_VALUES to value. Otherwise, decrement all counters by one.
2020-01-18libgcc: cris: config/cris/arit.c (DS): Apply attribute __fallthrough__.Hans-Peter Nilsson2-1/+6
* config/cris/arit.c (DS): Apply attribute fallthrough. Without this, there are, for each compilation of arit.c, 30ish occurrences of "this statement may fall through [-Wimplicit-fallthrough=]", for lines that look like case 32: DS; case 31: DS; case 30: DS; case 29: DS;
2020-01-18Fix compilation of crtstuff.c when DEFAULT_USE_CXA_ATEXIT is falseJohn David Anglin2-0/+8
PR libgcc/92988 * crtstuff.c (__do_global_dtors_aux): Only call __cxa_finalize if DEFAULT_USE_CXA_ATEXIT is true.
2020-01-17Fix up ChangeLog.Jakub Jelinek1-1/+1
2020-01-16[PATCH, GCC/ARM, 1/10] Fix -mcmse check in libgccMihail Ionescu2-1/+7
This patch is part of a patch series to add support for Armv8.1-M Mainline Security Extensions architecture. Code to detect whether cmse.c can be buit with -mcmse checks the output of host GCC when invoked with -mcmse. However, an error from the compiler does not prevent some minimal output so this always holds true. 2020-01-16 Mihail-Calin Ionescu <mihail.ionescu@arm.com> 2020-01-16 Thomas Preud'homme <thomas.preudhomme@arm.com> * config/arm/t-arm: Check return value of gcc rather than lack of output.
2020-01-14Typo.Georg-Johann Lay2-4/+4
libgcc/ * config/avr/lib1funcs.S (skip): Simplify.
2020-01-10[amdgcn] Remove dependency on stdint.h in libgccKwok Cheung Yeung2-3/+8
2020-01-10 Kwok Cheung Yeung <kcy@codesourcery.com> libgcc/ * config/gcn/atomic.c: Remove include of stdint.h. (__sync_val_compare_and_swap_##SIZE): Replace uintptr_t with __UINTPTR_TYPE__. From-SVN: r280152
2020-01-09[amdgcn] Add support for sub-word sync_compare_and_swap operationsKwok Cheung Yeung3-1/+67
2020-01-09 Kwok Cheung Yeung <kcy@codesourcery.com> libgcc/ * config/gcn/atomic.c: New. * config/gcn/t-amdgcn (LIB2ADD): Add atomic.c. From-SVN: r280055
2020-01-08Implement 64-bit double functions.Georg-Johann Lay21-0/+6970
gcc/ PR target/92055 * config.gcc (tm_defines) [target=avr]: Support --with-libf7, --with-double-comparison. * doc/install.texi: Document them. * config/avr/avr-c.c (avr_cpu_cpp_builtins) <WITH_LIBF7_LIBGCC, WITH_LIBF7_MATH, WITH_LIBF7_MATH_SYMBOLS> <WITH_DOUBLE_COMPARISON>: New built-in defines. * doc/invoke.texi (AVR Built-in Macros): Document them. * config/avr/avr-protos.h (avr_float_lib_compare_returns_bool): New. * config/avr/avr.c (avr_float_lib_compare_returns_bool): New function. * config/avr/avr.h (FLOAT_LIB_COMPARE_RETURNS_BOOL): New macro. libgcc/ PR target/92055 * config.host (tmake_file) [target=avr]: Add t-libf7, t-libf7-math, t-libf7-math-symbols as specified by --with-libf7=. * config/avr/t-avrlibc: Don't copy libgcc.a if there are modules depending on sizeof (double) or sizeof (long double). * config/avr/libf7: New folder. libgcc/config/avr/libf7/ PR target/92055 * t-libf7: New file. * t-libf7-math: New file. * t-libf7-math-symbols: New file. * libf7-common.mk: New file. * libf7-asm-object.mk: New file. * libf7-c-object.mk: New file. * asm-defs.h: New file. * libf7.h: New file. * libf7.c: New file. * libf7-asm.sx: New file. * libf7-array.def: New file. * libf7-const.def: New file. * libf7-constdef.h: New file. * f7renames.sh: New script. * f7wraps.sh: New script. * f7-renames.h: New generated file. * f7-wraps.h: New generated file. From-SVN: r279994
2020-01-05Guard inclusion of vxAtomicLib.h from gthr-vxworks.hOlivier Hainque2-0/+12
2020-01-05 Olivier Hainque <hainque@adacore.com> * config/gthr-vxworks.h: Guard #include vxAtomicLib.h by IN_LIBGCC2. From-SVN: r279885
2020-01-01Update copyright years.Jakub Jelinek1048-1049/+1057
From-SVN: r279813
2019-12-30Introduce an internal API for VxWorks version checksOlivier Hainque3-13/+14
This changes introduces an internal API for VxWorks version checks within runtime files, a prerequisite to a few fixes coming up for libstdc++ builds on more recent versions of the OS. 2019-12-30 Olivier Hainque <hainque@adacore.com> gcc/ * config/vxworks/_vxworks-versions.h: New file. * config.gcc (*-*-vxworks*): Add it to extra_headers. libgcc/ * config/gthr-vxworks.h: Use _vxworks-versions.h. * config/gthr-vxworks-tls.c: Likewise. From-SVN: r279783
2019-12-30Improve VxWorks GTHREAD_ONCE_INITOlivier Hainque2-1/+6
2019-12-30 Olivier Hainque <hainque@adacore.com> * config/gthr-vxworks.h (GTHREAD_ONCE_INIT): Use standard zero-initializer syntax. From-SVN: r279776
2019-12-30Fix macro reference in gthr-vxworks-tls.cOlivier Hainque2-1/+6
2019-12-30 Olivier Hainque <hainque@adacore.com> libgcc/ * config/gthr-vxworks-tls.c (__gthread_getspecific): Fix reference to the internal VX_GET_TLS_DATA interface. From-SVN: r279775
2019-12-30Fix typo in macro name guarding conditional in vxcrtstuff.cOlivier Hainque2-2/+7
2019-12-30 Olivier Hainque <hainque@adacore.com> libgcc/ * config/vxcrtstuff.c: Fix incorrect spelling of USE_INITFINI_ARRAY in guard. From-SVN: r279774
2019-12-16MSP430: Add new msp430-elfbare targetJozef Lawrynowicz4-2/+27
contrib/ChangeLog: 2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com> * config-list.mk: Add msp430-elfbare. gcc/ChangeLog: 2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com> * config.gcc: s/msp430*-*-*/msp430-*-*. Handle msp430-*-elfbare. * config/msp430/msp430-devices.c (TARGET_SUBDIR): Define. (_MSPMKSTR): Define. (__MSPMKSTR): Define. (rest_of_devices_path): Use TARGET_SUBDIR value in string. * config/msp430/msp430.c (msp430_option_override): Error if -fuse-cxa-atexit is used when it has been disabled at configure time. * config/msp430/t-msp430: Define TARGET_SUBDIR when building msp430-devices.o. * doc/install.texi: Document msp430-*-elf and msp430-*-elfbare. * doc/invoke.texi: Update documentation about which path devices.csv is searched for. gcc/testsuite/ChangeLog: 2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com> * g++.dg/init/dso_handle1.C: Require cxa_atexit support. * g++.dg/init/dso_handle2.C: Likewise. * g++.dg/other/cxa-atexit1.C: Likewise. * gcc.target/msp430/msp430.exp: Update csv-using-installed.c test to handle msp430-elfbare configuration. libgcc/ChangeLog: 2019-12-16 Jozef Lawrynowicz <jozef.l@mittosystems.com> * config.host: s/msp430*-*-elf/msp430-*-elf*. Override default "extra_parts" variable. * configure: Regenerate. * configure.ac: Disable TM clone registry by default for msp430-elfbare. From-SVN: r279442
2019-12-11MSP430: Add -fno-exceptions multilibJozef Lawrynowicz3-1/+14
ChangeLog: 2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com> * config-ml.in (msp430-*-*): Support --disable-no-exceptions configure flag. gcc/ChangeLog: 2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com> * config/msp430/msp430.h (STARTFILE_SPEC) [!fexceptions]: Use crtbegin_no_eh.o if building for the C language. [fno-exceptions]: Use crtbegin_no_eh.o if building for any language except C. (ENDFILE_SPEC) [!fexceptions]: Use crtend_no_eh.o if building for the C language. [fno-exceptions]: Use crtend_no_eh.o if building for any language except C. * config/msp430/t-msp430: Add -fno-exceptions multilib. * doc/install.texi: Document --disable-no-exceptions multilib configure option. * doc/sourcebuild.texi: Document exceptions_enabled effective target. gcc/testsuite/ChangeLog: 2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com> * lib/gcc-dg.exp: Add dg-prune messages for when exception handling is disabled. * lib/target-supports.exp (check_effective_target_exceptions_enabled): New. libgcc/ChangeLog: 2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com> * config.host: Add crt{begin,end}_no_eh.o to "extra_parts". * config.host (msp430*-*-elf): Add crt{begin,end}_no_eh.o to "extra_parts". From-SVN: r279246
2019-12-11libgcc: Declare __dso_handle only if DEFAULT_USE_CXA_ATEXIT is trueJozef Lawrynowicz2-1/+10
2019-12-11 Jozef Lawrynowicz <jozef.l@mittosystems.com> * crtstuff.c: Declare __dso_handle only if DEFAULT_USE_CXA_ATEXIT is true. From-SVN: r279243
2019-12-09libgcc: Fix misuse of USE_EH_FRAME_REGISTRY in crtstuff.cJozef Lawrynowicz2-2/+7
2019-12-09 Jozef Lawrynowicz <jozef.l@mittosystems.com> * crtstuff.c (__do_global_dtors_aux): Check if USE_EH_FRAME_REGISTRY is defined instead of its value. From-SVN: r279125
2019-12-09libgcc: Dont define __do_global_dtors_aux if it will be emptyJozef Lawrynowicz2-1/+12
2019-12-09 Jozef Lawrynowicz <jozef.l@mittosystems.com> * crtstuff.c (__do_global_dtors_aux): Wrap in #if so it's only defined if it will have contents. From-SVN: r279123
2019-12-05re PR target/92055 ([avr] Support 64-bit double)Georg-Johann Lay2-2/+7
PR target/92055 * config/avr/t-avrlibc (MULTISUBDIR): Search for double, not double64. From-SVN: r278992
2019-11-18fix ChangeLog to reference the PRSzabolcs Nagy1-0/+1
From-SVN: r278403
2019-11-18musl: Don't use gthr weak refs in libgcc PR91737Szabolcs Nagy3-0/+14
The gthr weak reference based single thread detection is unsafe with static linking and in case of dynamic linking it's ineffective on musl since pthread symbols are defined in libc.so. (Ideally this should be fixed for all targets, since glibc plans to move libpthread.so into libc.so too and users want to static link to pthread without --whole-archive: PR87189.) For now we have to explicitly opt out from the broken behaviour in the config machinery of each target lib and libgcc was previously missed. libgcc/ChangeLog: 2019-11-18 Szabolcs Nagy <szabolcs.nagy@arm.com> * config.host: Add t-gthr-noweak on *-*-musl*. * config/t-gthr-noweak: New file. From-SVN: r278399
2019-11-17linux-atomic.c (__kernel_cmpxchg): Change argument 1 to volatile void *.John David Anglin2-100/+129
* config/pa/linux-atomic.c (__kernel_cmpxchg): Change argument 1 to volatile void *. Remove trap check. (__kernel_cmpxchg2): Likewise. (FETCH_AND_OP_2): Adjust operand types. (OP_AND_FETCH_2): Likewise. (FETCH_AND_OP_WORD): Likewise. (OP_AND_FETCH_WORD): Likewise. (COMPARE_AND_SWAP_2): Likewise. (__sync_val_compare_and_swap_4): Likewise. (__sync_bool_compare_and_swap_4): Likewise. (SYNC_LOCK_TEST_AND_SET_2): Likewise. (__sync_lock_test_and_set_4): Likewise. (SYNC_LOCK_RELEASE_1): Likewise. Use __kernel_cmpxchg2 for release. (__sync_lock_release_4): Adjust operand types. Use __kernel_cmpxchg for release. (__sync_lock_release_8): Remove. From-SVN: r278377
2019-11-15m68k: add musl supportSzabolcs Nagy2-1/+6
Add the dynamic linker name and fix a type name to use the public name instead of the glibc internal name. gcc/ChangeLog: 2019-11-15 Szabolcs Nagy <szabolcs.nagy@arm.com> * config/m68k/linux.h (MUSL_DYNAMIC_LINKER): Define. libgcc/ChangeLog: 2019-11-15 Szabolcs Nagy <szabolcs.nagy@arm.com> * config/m68k/linux-unwind.h (struct uw_ucontext): Use sigset_t instead of __sigset_t. From-SVN: r278312
2019-11-14Update the arm-*-vxworks* supportJerome Lambourg3-21/+71
2019-11-13 Jerome Lambourg <lambourg@adacore.com> Doug Rupp <rupp@adacore.com> Olivier Hainque <hainque@adacore.com> gcc/ * config.gcc: Collapse the arm-vxworks entries into a single arm-wrs-vxworks7* one, bpabi based. Update the default cpu from arm8 to armv7-a * config/arm/vxworks.h (CC1_SPEC): Simplify, knowing that we always use ARM_UNWIND_INFO. (DWARF2_UNWIND_INFO): Remove redefinition. (ARM_TARGET2_DWARF_FORMAT): Likewise. (VXWORKS_PERSONALITY): Define, to "llvm". (VXWORKS_EXTRA_LIBS_RTP): Define, to "-lllvm". libgcc/ * config.host: Collapse the arm-vxworks entries into a single arm-wrs-vxworks7* one. * config/arm/unwind-arm-vxworks.c: Update comments. Provide __gnu_Unwind_Find_exidx and a weak dummy __cxa_type_match for kernel modules, to be overriden by libstdc++ when we link with it. Rely on externally provided __exidx_start/end. Co-Authored-By: Doug Rupp <rupp@adacore.com> Co-Authored-By: Olivier Hainque <hainque@adacore.com> From-SVN: r278253
2019-11-14Base support for vxworks 7 on aarch64Doug Rupp2-0/+11
2019-11-14 Doug Rupp <rupp@adacore.com> Olivier Hainque <hainque@adacore.com> Jerome Lambourg <lambourg@adacore.com> gcc/ * config.gcc: Handle aarch64*-wrs-vxworks7*. * config/aarch64/aarch64-vxworks.h: New file. * config/aarch64/t-aarch64-vxworks: New file. libgcc/ * config.host: Handle aarch64*-wrs-vxworks7*. Co-Authored-By: Jerome Lambourg <lambourg@adacore.com> Co-Authored-By: Olivier Hainque <hainque@adacore.com> From-SVN: r278251
2019-11-14Update the libgcc support for VxWorks AE/653Olivier Hainque4-0/+40
2019-11-12 Olivier Hainque <hainque@adacore.com> libgcc/ * config/t-gthr-vxworksae: New file, add all the gthr-vxworks sources except the cxx0x support to LIB2ADDEH. We don't support cxx0x on AE/653. * config/t-vxworksae: New file. * config.host: Handle *-*-vxworksae: Add the two aforementioned Makefile fragment files at their expected position in the tmake_file list, in accordance with what is done for other VxWorks variants. From-SVN: r278250
2019-11-14Improve the thread support for VxWorksCorentin Gay11-219/+835
2019-11-12 Corentin Gay <gay@adacore.com> Jerome Lambourg <lambourg@adacore.com> Olivier Hainque <hainque@adacore.com> libgcc/ * config/t-gthr-vxworks: New file, add all the gthr-vxworks sources to LIB2ADDEH. * config/t-vxworks: Remove adjustments to LIB2ADDEH. * config/t-vxworks7: Likewise. * config.host: Append a block at the end of the file to add the t-gthr files to the tmake_file list for VxWorks after everything else. * config/vxlib.c: Rename as gthr-vxworks.c. * config/vxlib-tls.c: Rename as gthr-vxworks-tls.c. * config/gthr-vxworks.h: Simplify a few comments. Expose a TAS API and a basic error checking API, both internal. Simplify the __gthread_once_t type definition and initializers. Add sections for condition variables support and for the C++0x thread support, conditioned against Vx653 for the latter. * config/gthr-vxworks.c (__gthread_once): Simplify comments and implementation, leveraging the TAS internal API. * config/gthr-vxworks-tls.c: Introduce an internal TLS data access API, leveraging the general availability of TLS services in VxWorks7 post SR6xxx. (__gthread_setspecific, __gthread_setspecific): Use it. (tls_delete_hook): Likewise, and simplify the enter/leave dtor logic. * config/gthr-vxworks-cond.c: New file. GTHREAD_COND variable support based on VxWorks primitives. * config/gthr-vxworks-thread.c: New file. GTHREAD_CXX0X support based on VxWorks primitives. Co-Authored-By: Jerome Lambourg <lambourg@adacore.com> Co-Authored-By: Olivier Hainque <hainque@adacore.com> From-SVN: r278249
2019-11-14Introduce vxworks specific crtstuff supportJerome Lambourg4-0/+162
2019-11-06 Jerome Lambourg <lambourg@adacore.com> Olivier Hainque <hainque@adacore.com> libgcc/ * config/vxcrtstuff.c: New file. * config/t-vxcrtstuff: New Makefile fragment. * config.host: Append t-vxcrtstuff to the tmake_file list on all VxWorks ports using dwarf for table based EH. gcc/ * config/vx-common.h (USE_TM_CLONE_REGISTRY): Remove definition, pointless with a VxWorks specific version of crtstuff. (DWARF2_UNWIND_INFO): Conditionalize on !ARM_UNWIND_INFO. * config/vxworks.h (VX_CRTBEGIN_SPEC, VX_CRTEND_SPEC): New local macros, controlling the addition of vxworks specific crtstuff objects depending on the EH mechanism and kind of module being linked. (VXWORKS_STARTFILE_SPEC, VXWORKS_ENDFILE_SPEC): Use them. Co-Authored-By: Olivier Hainque <hainque@adacore.com> From-SVN: r278248
2019-11-07Support 64-bit double and 64-bit long double configurations.Georg-Johann Lay5-2/+64
gcc/ Support 64-bit double and 64-bit long double configurations. PR target/92055 * config.gcc (tm_defines) [avr]: Set from --with-double=, --with-long-double=. * config/avr/t-multilib: Remove. * config/avr/t-avr: Output of genmultilib.awk is now fully dynamically generated and no more part of the repo. (HAVE_DOUBLE_MULTILIB, HAVE_LONG_DOUBLE_MULTILIB): New variables. Pass them down to... * config/avr/genmultilib.awk: ...here and handle them. * gcc/config/avr/avr.opt (-mdouble=, avr_double). New option and var. (-mlong-double=, avr_long_double). New option and var. * common/config/avr/avr-common.c (opts.h, diagnostic.h): Include. (TARGET_OPTION_OPTIMIZATION_TABLE) <-mdouble=, -mlong-double=>: Set default as requested by --with-double= (TARGET_HANDLE_OPTION): Define to this... (avr_handle_option): ...new hook worker. * config/avr/avr.h (DOUBLE_TYPE_SIZE): Define to avr_double. (LONG_DOUBLE_TYPE_SIZE): Define to avr_long_double. (avr_double_lib): New proto for spec function. (EXTRA_SPEC_FUNCTIONS) <double-lib>: Add. (DRIVER_SELF_SPECS): Call %:double-lib. * config/avr/avr.c (avr_option_override): Assert sizeof(long double) >= sizeof(double) for the target. * config/avr/avr-c.c (avr_cpu_cpp_builtins) [__HAVE_DOUBLE_MULTILIB__, __HAVE_LONG_DOUBLE_MULTILIB__] [__HAVE_DOUBLE64__, __HAVE_DOUBLE32__, __DEFAULT_DOUBLE__=] [__HAVE_LONG_DOUBLE64__, __HAVE_LONG_DOUBLE32__] [__HAVE_LONG_DOUBLE_IS_DOUBLE__, __DEFAULT_LONG_DOUBLE__=]: New built-in define depending on --with-double=, --with-long-double=. * config/avr/driver-avr.c (avr_double_lib): New spec function. * doc/invoke.tex (AVR Options) <-mdouble=,-mlong-double=>: Doc. * doc/install.texi (Cross-Compiler-Specific Options) <--with-double=, --with-long-double=>: Doc. libgcc/ Support 64-bit double and 64-bit long double configurations. PR target/92055 * config/avr/t-avr (HOST_LIBGCC2_CFLAGS): Only add -DF=SF if long double is a 32-bit type. * config/avr/t-avrlibc: Copy double64 and long-double64 multilib(s) from the vanilla one. * config/avr/t-copy-libgcc: New Makefile snip. From-SVN: r277908
2019-11-04libgcc: Fix incorrect use of USE_TM_CLONE_REGISTRYJozef Lawrynowicz2-6/+11
2019-11-04 Jozef Lawrynowicz <jozef.l@mittosystems.com> * crtstuff.c: Define USE_TM_CLONE_REGISTRY to 0 if it's undefined and the target output object format is not ELF. s/defined(USE_TM_CLONE_REGISTRY)/USE_TM_CLONE_REGISTRY. From-SVN: r277775
2019-11-03re PR libgcc/78804 ([RX] -m64bit-doubles does not work)Oleg Endo4-32/+12
libgcc/ PR libgcc/78804 * fp-bit.h: Remove FLOAT_BIT_ORDER_MISMATCH. * fp-bit.c (pack_d, unpack_d): Remove special cases for FLOAT_BIT_ORDER_MISMATCH. * config/arc/t-arc: Remove FLOAT_BIT_ORDER_MISMATCH. From-SVN: r277752
2019-11-01RISC-V: Build soft-float divide routines for -mno-fdiv.Jim Wilson2-0/+21
Using -mno-fdiv gives linker errors unless we build the missing divide routines in libgcc always. There is at least one university project designing RISC-V parts without FP divide that wants to use the option. libgcc/ * config/riscv/t-softfp32 (softfp_extra): Add FP divide routines From-SVN: r277723
2019-10-23lib2hw_mul.S: Fix wrong syntax in branch instruction.Jozef Lawrynowicz3-67/+118
2019-10-23 Jozef Lawrynowicz <jozef.l@mittosystems.com> * config/msp430/lib2hw_mul.S: Fix wrong syntax in branch instruction. s/RESULT_LO/RESLO, s/RESULT_HI/RESHI, s/MPY_OP1/MPY, s/MPY_OP1_S/MPYS, s/MAC_OP1/MAC, s/MPY_OP2/OP2, s/MAC_OP2/OP2. Define symbols for 32-bit and f5series hardware multiply register addresses. Replace hard-coded register addresses with symbols. Fix "_mspabi*" typo. Fix whitespace. * config/msp430/lib2mul.c: Add comment. From-SVN: r277340
2019-10-15fptr.c (_dl_read_access_allowed): Change argument to unsigned int.John David Anglin2-6/+18
* config/pa/fptr.c (_dl_read_access_allowed): Change argument to unsigned int. Adjust callers. (__canonicalize_funcptr_for_compare): Change plabel type to volatile unsigned int *. Load relocation offset before function pointer. Add barrier to ensure ordering. From-SVN: r277015
2019-10-12lib2funcs.S (__gcc_plt_call): Load branch target to %r21.John David Anglin3-14/+30
* config/pa/lib2funcs.S (__gcc_plt_call): Load branch target to %r21. Load PIC register after branch target. Fix white space. * config/pa/milli64.S ($$dyncall): Separate LINUX and non LINUX implementations. Load PIC register after branch target. Don't clobber function pointer when it points to function descriptor. Use nullification instead of branch in LINUX implementation. From-SVN: r276925
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