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2022-02-13runtime: call timer functions via syscallIan Lance Taylor1-9/+2
It turns out to be painful to require linking against -lrt on GNU/Linux, as that makes it harder to link Go code into C programs. Instead just call the timer syscalls directly. That is what the upstream library does anyhow. gcc/go/ * gospec.cc: Revert 2022-02-09 change: (RTLIB, RT_LIBRARY): Don't define. (lang_specific_driver): Don't add -lrt if linking statically on GNU/Linux. gotools/ * configure.ac: Revert 2022-02-09 change: (RT_LIBS): Don't define. * Makefile.am (check-runtime): Don't set GOLIBS to $(RT_LIBS). * configure, Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/385475
2022-02-11libgo: update to Go1.18beta2Ian Lance Taylor1-3/+10
gotools/ * Makefile.am (go_cmd_cgo_files): Add ast_go118.go (check-go-tool): Copy golang.org/x/tools directories. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695
2022-02-03make `-Werror` optional in libatomic/libbacktrace/libgomp/libitm/libsanitizerDavid Seifert1-2/+2
* `-Werror` can cause issues when a more recent version of GCC compiles an older version: - https://bugs.gentoo.org/229059 - https://bugs.gentoo.org/475350 - https://bugs.gentoo.org/667104 libatomic/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libbacktrace/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libgomp/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libitm/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libsanitizer/ChangeLog: * configure.ac: Support --disable-werror. * aclocal.m4: Include also ../config/warnings.m4. * libbacktrace/Makefile.am (WARN_FLAGS): Remove. * configure: Regenerate. * Makefile.in: Regenerate. * asan/Makefile.in: Regenerate. * hwasan/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. Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
2021-08-12libgo: update to Go1.17rc2Ian Lance Taylor1-1/+1
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/341629
2021-05-18libgo: update configure to current sourcesIan Lance Taylor1-2/+2
Change-Id: I12766baf02bfdf2233f1c5bde1a270f06b020aa7 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/321076 Trust: Ian Lance Taylor <iant@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
2021-01-05Update GNU/Hurd configure supportSamuel Thibault1-11/+1
ChangeLog: * libtool.m4: Match gnu* along other GNU systems. * libgo/config/libtool.m4: Match gnu* along other GNU systems. * libgo/configure: Re-generate. libffi/ * configure: Re-generate. libgomp/ * configure: Re-generate. gcc/ * configure: Re-generate. libatomic/ * configure: Re-generate. libbacktrace/ * configure: Re-generate. libcc1/ * configure: Re-generate. libgfortran/ * configure: Re-generate. libgomp/ * configure: Re-generate. libhsail-rt/ * configure: Re-generate. libitm/ * configure: Re-generate. libobjc/ * configure: Re-generate. liboffloadmic/ * configure: Re-generate. * plugin/configure: Re-generate. libphobos/ * configure: Re-generate. libquadmath/ * configure: Re-generate. libsanitizer/ * configure: Re-generate. libssp/ * configure: Re-generate. libstdc++-v3/ * configure: Re-generate. libvtv/ * configure: Re-generate. lto-plugin/ * configure: Re-generate. zlib/ * configure: Re-generate.
2020-12-30libgo: update to Go1.16beta1 releaseIan Lance Taylor1-4/+250
This does not yet include support for the //go:embed directive added in this release. * Makefile.am (check-runtime): Don't create check-runtime-dir. (mostlyclean-local): Don't remove check-runtime-dir. (check-go-tool, check-vet): Copy in go.mod and modules.txt. (check-cgo-test, check-carchive-test): Add go.mod file. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/280172
2020-11-20compiler, libgo: change mangling schemeIan Lance Taylor1-1/+1
Overhaul the mangling scheme to avoid ambiguities if the package path contains a dot. Instead of using dot both to separate components and to mangle characters, use dot only to separate components and use underscore to mangle characters. For golang/go#41862 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/271726
2020-10-28libgo: handle linking to NetBSD's versioned symbolsNikhil Benesch1-1/+1
On NetBSD, for backwards compatibility, various libc symbols are renamed to a symbol with a version suffix. For example, this is the (abbreviated) definition of sigaction: int sigaction(...) __asm__ ("__sigaction14") This poses a challenge for libgo, which attempts to link sigaction by way of an "//extern" comment: //extern sigaction func sigaction(...) This results in a reference to the deprecated compatibility symbol "sigaction", rather than the desired "__sigaction14" symbol. This patch introduces a new "//extern-sysinfo" comment to handle this situation. The new mklinknames.awk script scans a package for these comments and outputs a "//go:linkname" directive that links the wrapper to the correct versioned symbol, as determined by parsing the __asm__ annotation on the function's declaration in gen-sysinfo.go. For now, only the following packages are scanned by mklinknames.awk: os os/user runtime syscall gotools/: * Makefile.am (check-runtime): Add runtime_linknames.go to --extrafiles. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/265125
2020-10-14libgo: export NetBSD-specific types in mksysinfo.shNikhil Benesch1-1/+1
The syscall package depends on many NetBSD-specific types on NetBSD. Teach mksysinfo.sh to export these types. This alone is not sufficient to get the syscall package to compile on NetBSD, but it's a start. Note that the IfMsgHdr type is recapitalized to IfMsghdr, which requires changes in the AIX port. The new capitalization is what's used by upstream in existing NetBSD-specific code and is more consistent with the capitalization of other C structs with the "hdr" suffix. Updates golang/go#38538. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/261739
2020-10-07libgo/configure: remove -fno-section-anchors for AIXClément Chigot1-6/+2
This option is no longer needed. There is no crash without it since at least gcc-9. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/260157
2020-09-30libgo: add 32-bit RISC-V (RV32) supportMaciej W. Rozycki1-2/+15
Add support for the 32-bit RISC-V (RV32) ISA matching the 64-bit RISC-V (RV64) port except for async preemption added as a stub only. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/251179
2020-08-12libgo: correctly handle AIX FAT library creationClément Chigot1-4/+4
The previous patch wasn't working everytime. Especially when AR had "-X32_64", the new .so would replace the default one and not just being added. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/247377
2020-08-01libgo: update to go1.15rc1Ian Lance Taylor1-3/+3
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/245157
2020-07-23libgo: add AIX FAT libraries supportClément Chigot1-2/+11
AIX-style libraries contains both 32 and 64 bit shared objects. This patch follows the adding of FAT libraries support in other gcc libraries (libgcc, listdc++, etc). Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/242957
2020-05-15libgo: only build syscall test with -static if it worksIan Lance Taylor1-2/+46
Test whether -static works, and use it if possible. This time for sure. For PR go/95061 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/234024
2020-01-24libgo: handle --with-toolexeclibdir=.Ian Lance Taylor1-3/+30
Patch by Maciej W. Rozycki. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/216239
2020-01-21libgo: update to Go1.14beta1Ian Lance Taylor1-1/+1
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/214297
2019-12-06re PR go/92810 (Compiling GCC go for aarch64_be-marvell-linux-gnu fails)Ian Lance Taylor1-0/+3
PR go/92810 libgo: recognize aarch64_be as arm64be Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/210038 From-SVN: r279032
2019-11-11libgo: fix DejaGNU testsuite compiler when using build sysrootIan Lance Taylor1-1/+2
Patch by Maciej W. Rozycki. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/206577 From-SVN: r278070
2019-09-09libgo: only build x/sys/cpu/cpu_gccgo.c on x86 systemsIan Lance Taylor1-2/+17
The C file has a build tag, but the procedure we use for building C files ignores build tags. This should fix the libgo build on non-x86 systems. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/194378 From-SVN: r275544
2019-09-06libgo: update to Go 1.13beta1 releaseIan Lance Taylor1-2/+2
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/193497 From-SVN: r275473
2019-05-31runtime: drop unused C type reflection codeIan Lance Taylor1-15/+3
In particular, drop __go_type_descriptors_equal, which is no longer used, and will be made obsolete by CL 179598. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/179858 From-SVN: r271823
2019-05-31runtime: implement cheaper context switch on Linux/AMD64Ian Lance Taylor1-3/+159
Currently, goroutine switches are implemented with libc getcontext/setcontext functions, which saves/restores the machine register states and also the signal context. This does more than what we need, and performs an expensive syscall. This CL implements a simplified version of getcontext/setcontext, in assembly, that only saves/restores the necessary part, i.e. the callee-save registers, and the PC, SP. A simplified version of makecontext, written in C, is also added. Currently this is only implemented on Linux/AMD64. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/178298 From-SVN: r271818
2019-05-27re PR go/90635 (typo in libgo/configure.ac)Ian Lance Taylor1-1/+1
PR go/90635 libgo: correct typo in USE_LIBFFI AM_CONDITIONAL Only affects the case of passing --without-libffi to configure. Fixes https://gcc.gnu.org/PR90635 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/178998 From-SVN: r271640
2019-05-13libgo: drop Solaris 10 supportIan Lance Taylor1-1/+1
Based on patch by Rainer Orth. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/176938 From-SVN: r271135
2019-02-27re PR go/89172 (FAIL: runtime/pprof)Ian Lance Taylor1-2/+24
PR go/89172 internal/cpu, runtime, runtime/pprof: handle function descriptors When using PPC64 ELF ABI v1 a function address is not a PC, but is the address of a function descriptor. The first field in the function descriptor is the actual PC (see http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi.html#FUNC-DES). The libbacktrace library knows about this, and libgo uses actual PC values consistently except for the helper function funcPC that appears in both runtime and runtime/pprof. This patch fixes funcPC by recording, in the internal/cpu package, whether function descriptors are being used. We have to check for function descriptors using a C compiler check, because GCC can be configured using --with-abi to select the ELF ABI to use. Fixes https://gcc.gnu.org/PR89172 Reviewed-on: https://go-review.googlesource.com/c/162978 From-SVN: r269266
2019-02-01libgo: add configury and sysinfo support for hurdIan Lance Taylor1-2/+18
Patch by Svante Signell. Reviewed-on: https://go-review.googlesource.com/c/160824 From-SVN: r268461
2019-02-01runtime, sync: use __atomic intrinsics instead of __syncIan Lance Taylor1-116/+0
GCC has supported the __atomic intrinsics since 4.7. They are better than the __sync intrinsics in that they specify a memory model and, more importantly for our purposes, they are reliably implemented either in the compiler or in libatomic. Fixes https://gcc.gnu.org/PR52084 Reviewed-on: https://go-review.googlesource.com/c/160820 From-SVN: r268458
2019-01-18libgo: update to Go1.12beta2Ian Lance Taylor1-2/+2
Reviewed-on: https://go-review.googlesource.com/c/158019 gotools/: * Makefile.am (go_cmd_vet_files): Update for Go1.12beta2 release. (GOTOOLS_TEST_TIMEOUT): Increase to 600. (check-runtime): Export LD_LIBRARY_PATH before computing GOARCH and GOOS. (check-vet): Copy golang.org/x/tools into check-vet-dir. * Makefile.in: Regenerate. gcc/testsuite/: * go.go-torture/execute/names-1.go: Stop using debug/xcoff, which is no longer externally visible. From-SVN: r268084
2018-10-31re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of ↵Ian Lance Taylor1-635/+913
gcc's required automake and modern Perl) PR bootstrap/82856 libgo: update to autoconf 2.69 and automake 1.15.1 Initial patch from Joseph Myers. Reviewed-on: https://go-review.googlesource.com/c/146417 From-SVN: r265701
2018-10-02internal/bytealg: support systems that don't have memmemIan Lance Taylor1-1/+1
Reviewed-on: https://go-review.googlesource.com/138839 From-SVN: r264798
2018-10-01libgo: support x32 as GOARCH=amd64p32 GOOS=linuxIan Lance Taylor1-0/+12
This is enough to let libgo build when configured using --with-multilib-list=m64,m32,mx32. I don't have an x32-enabled kernel so I haven't tested whether it executes correctly. For https://gcc.gnu.org/PR87470 Reviewed-on: https://go-review.googlesource.com/138817 From-SVN: r264772
2018-06-22syscall: remove UstatIan Lance Taylor1-33/+0
glibc 2.28 removes ustat.h and the ustat function entirely, which breaks syscall.Ustat. Updates golang/go#25990 Reviewed-on: https://go-review.googlesource.com/120535 From-SVN: r261896
2018-06-11libgo: add riscv and js/wasm as known targetsIan Lance Taylor1-2/+2
Incorporates cut down versions of https://golang.org/cl/102835 and https://golang.org/cl/106256 from the master sources. This will tell go/build to skip files with those tags. Reviewed-on: https://go-review.googlesource.com/117996 From-SVN: r261451
2018-05-02libgo: add support for the Nios II architectureIan Lance Taylor1-2/+5
Reviewed-on: https://go-review.googlesource.com/90775 From-SVN: r259866
2018-02-22re PR go/84484 (libgo configure tests fail to find -latomic)Andreas Schwab1-2/+5
PR go/84484 libgo: add support for riscv64 Patch by Andreas Schwab. Reviewed-on: https://go-review.googlesource.com/96377 * go.test/go-test.exp (go-set-goarch): Recognize riscv64-*-*. From-SVN: r257914
2018-02-22libgo: add -L option for libatomic when using -pthreadIan Lance Taylor1-2/+3
Fixes https://gcc.gnu.org/PR84484 Reviewed-on: https://go-review.googlesource.com/95436 From-SVN: r257911
2018-02-01math: adjust compilation flags, use them when testingIan Lance Taylor1-3/+2
We were using special compilation flags for the math package, but we weren't using them when testing. That meant that our tests were not checking the real code we were providing. Fix that. Fixing that revealed that we were not using a good set of flags, or at least were not using flags that let the tests pass. Adjust the flags to stop using -funsafe-math-optimizations on x86. Instead always use -ffp-contract=off -fno-math-errno -fno-trapping-math for all targets. Fixes golang/go#23647 Reviewed-on: https://go-review.googlesource.com/91355 From-SVN: r257312
2018-01-14go/types: implement SizesFor for gccgoIan Lance Taylor1-124/+22
Move the architecture-specific settings out of configure.ac into a new shell script goarch.sh. Use the new script to collect the values for all architectures to make them available in go/types. Also fix cmd/vet to pass the right compiler when it calls SizesFor. This fixes cmd/vet for systems that are not implemented in the gc toolchain, such as alpha and ia64. Reviewed-on: https://go-review.googlesource.com/87635 From-SVN: r256655
2018-01-10libgo: add platform support for SuperHIan Lance Taylor1-2/+32
Reviewed-on: https://go-review.googlesource.com/84555 From-SVN: r256446
2018-01-09libgo: update to Go1.10beta1Ian Lance Taylor1-9/+15
Update the Go library to the 1.10beta1 release. Requires a few changes to the compiler for modifications to the map runtime code, and to handle some nowritebarrier cases in the runtime. Reviewed-on: https://go-review.googlesource.com/86455 gotools/: * Makefile.am (go_cmd_vet_files): New variable. (go_cmd_buildid_files, go_cmd_test2json_files): New variables. (s-zdefaultcc): Change from constants to functions. (noinst_PROGRAMS): Add vet, buildid, and test2json. (cgo$(EXEEXT)): Link against $(LIBGOTOOL). (vet$(EXEEXT)): New target. (buildid$(EXEEXT)): New target. (test2json$(EXEEXT)): New target. (install-exec-local): Install all $(noinst_PROGRAMS). (uninstall-local): Uninstasll all $(noinst_PROGRAMS). (check-go-tool): Depend on $(noinst_PROGRAMS). Copy down objabi.go. (check-runtime): Depend on $(noinst_PROGRAMS). (check-cgo-test, check-carchive-test): Likewise. (check-vet): New target. (check): Depend on check-vet. Look at cmd_vet-testlog. (.PHONY): Add check-vet. * Makefile.in: Rebuild. From-SVN: r256365
2018-01-06libgo: fix GOARCH_CACHELINESIZE on ia64Ian Lance Taylor1-1/+1
Reviewed-on: https://go-review.googlesource.com/85256 From-SVN: r256306
2017-11-14Adapt Solaris 12 referencesRainer Orth1-2/+2
libgcc: * config.host (*-*-solaris2*): Adapt comment for Solaris 12 renaming. * config/sol2/crtpg.c (__start_crt_compiler): Likewise. * configure.ac (libgcc_cv_solaris_crts): Likewise. * configure: Regenerate. gcc: * config.gcc (*-*-solaris2*): Enable default_use_cxa_atexit since Solaris 11. Update comment. * configure.ac (gcc_cv_ld_pid): Adapt comment for Solaris 12 renaming. * config/sol2.h (STARTFILE_SPEC): Likewise. * configure: Regenerate. gcc/testsuite: * lib/target-supports.exp (check_effective_target_pie): Adapt comment for Solaris 12 renaming. * gcc.dg/torture/pr60092.c: Remove *-*-solaris2.11* dg-xfail-run-if. From-SVN: r254737
2017-09-14libgo: update to go1.9Ian Lance Taylor1-1/+1
Reviewed-on: https://go-review.googlesource.com/63753 From-SVN: r252767
2017-08-29libgo: netinet/icmp6.h require netinet/in.h on AIXIan Lance Taylor1-1/+16
Reviewed-on: https://go-review.googlesource.com/59912 From-SVN: r251439
2017-07-14libgo: don't copy semt into runtime.incIan Lance Taylor1-1/+1
https://gcc.gnu.org/PR81449 reports a problem with the definition semt in runtime.inc on some systems. Since the C code in libgo/runtime doesn't need semt, just don't copy it into runtime.inc. Reviewed-on: https://go-review.googlesource.com/48593 From-SVN: r250217
2017-06-21libgo: remove old MIPS architecture namesIan Lance Taylor1-15/+2
This removes the old names for the 3 main MIPS ABIs: mipso32, mipsn32 and mipsn64. It also removes the mipso64 ABI which has no equivalent architecture name in go. This ABI has been dead for sometime and I doubt anyone will miss it. Reviewed-on: https://go-review.googlesource.com/46154 From-SVN: r249477
2017-06-21libgo: use gc's arch names as the default GOARCHs on MIPSIan Lance Taylor1-4/+5
This means that the gc tools and gofrontend agree on the architecture names for the 3 MIPS ABIs which should allow a gofrontend compiler to build go. Reviewed-on: https://go-review.googlesource.com/46153 From-SVN: r249476
2017-06-21libgo, syscall: fix ptrace implementation on MIPSIan Lance Taylor1-1/+1
On MIPS, the correct structure for PtraceRegs is 'struct pt_regs' which is declared in linux/ptrace.h. Previously no PtraceRegs structure was created on MIPS because 'struct user_regs_struct' doesn't exist there. Fallback to using pt_regs when the PtraceRegs structure is generated in mksysinfo.sh, then adjust syscall_linux_mipsx.go to read the program counter from the correct field. In addition, implement PtraceGetRegs and PtraceSetRegs on all 3 ABI variants. syscall_linux_mips64x.go can now be removed since the ptrace code on all 3 ABIs is identical. Reviewed-on: https://go-review.googlesource.com/46150 From-SVN: r249472
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