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2020-12-22runtime: add "success" field to sudogIan Lance Taylor3-22/+28
This is the gofrontend version of https://golang.org/cl/245019. Original CL description: The current wakeup protocol for channel communications is that the second goroutine sets gp.param to the sudog when a value is successfully communicated over the channel, and to nil when the wakeup is due to closing the channel. Setting nil to indicate channel closure works okay for chansend and chanrecv, because they're only communicating with one channel, so they know it must be the channel that was closed. However, it means selectgo has to re-poll all of the channels to figure out which one was closed. This commit adds a "success" field to sudog, and changes the wakeup protocol to always set gp.param to sg, and to use sg.success to indicate successful communication vs channel closure. While here, this also reorganizes the chansend code slightly so that the sudog is still released to the pool if the send blocks and then is awoken because the channel closed. For golang/go#40410 This is being brought over to gofrontend as a step toward upgrading to Go1.16beta1, setting up for more compiler changes related to select handling. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/279734
2020-12-22runtime: omit nil-channel cases from selectgo's ordersIan Lance Taylor1-40/+28
This is the gofrontend version of https://golang.org/cl/245123. Original CL description: Currently, selectgo does an initial pass over the cases array to look for entries with nil channels, so they can be easily recognized and skipped later on. But this still involves actually visiting the cases. This commit changes selectgo to omit cases with nil channels when constructing pollorder, so that they'll be skipped over entirely later on. It also checks for caseDefault up front, which will facilitate changing it to use a "block bool" parameter instead. Updates golang/go#40410 This is being brought over to gofrontend as a step toward upgrading to Go1.16beta1, setting up for more compiler changes related to select handling. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/279733
2020-12-22runtime: remove scase.releasetime fieldIan Lance Taylor1-12/+9
This is the gofrontend version of https://golang.org/cl/245122. Original CL description: selectgo will report at most one block event, so there's no need to keep a releasetime for every select case. It suffices to simply track the releasetime of the case responsible for the wakeup. Updates golang/go#40410. This is being brought over to gofrontend as a step toward upgrading to Go1.16beta1. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/279732
2020-12-08libgo: update to 1.15.6 releaseIan Lance Taylor7-18/+196
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/276153
2020-12-07syscall: don't use AF_LINK on hurdIan Lance Taylor2-1/+102
Patch from Svante Signell. Fixes PR go/98153 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/275939
2020-11-30internal/cpu: don't define CacheLinePadSize for mips64xIan Lance Taylor1-2/+0
For libgo the definition comes from the generated file cpugen.go. Fixes PR go/98041 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273866
2020-11-30compiler, runtime: check len/cap for append(s, make(T, l)...)Ian Lance Taylor1-2/+9
The overflow checks done in growslice always reported an error for the capacity argument, even if it was the length argument that overflowed. This change lets the code pass the current issue4085b.go test. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/273806
2020-11-23log/syslog: correct asm name for C functionIan Lance Taylor1-1/+1
Patch from Rainer Orth. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/272259
2020-11-20libgo: update to Go 1.15.5 releaseIan Lance Taylor5-5/+93
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/272146
2020-11-20compiler, libgo: change mangling schemeIan Lance Taylor37-206/+315
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
2020-11-17cmd/go, cmd/cgo: update gofrontend mangling checksIan Lance Taylor5-130/+273
This is a port of two patches in the master repository. https://golang.org/cl/259298 cmd/cgo: split gofrontend mangling checks into cmd/internal/pkgpath This is a step toward porting https://golang.org/cl/219817 from the gofrontend repo to the main repo. Note that this also corrects the implementation of the v2 mangling scheme to use ..u and ..U where appropriate. https://golang.org/cl/259299 cmd/go: use cmd/internal/pkgpath for gccgo pkgpath symbol For golang/go#37272 For golang/go#41862 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/270637
2020-11-10libgo: update to Go 1.15.4 releaseIan Lance Taylor14-26/+264
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/268177
2020-10-28libgo: handle linking to NetBSD's versioned symbolsNikhil Benesch8-28/+28
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
2020-10-28syscall: don't build libcall_bsd.go on solarisIan Lance Taylor1-1/+1
This new file was based on master sources that are built for *BSD but not Solaris Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/266017
2020-10-27libgo: update to Go 1.15.3 releaseIan Lance Taylor22-185/+329
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/265717
2020-10-27compiler, go/internal/gccgoimporter: export notinheap annotationIan Lance Taylor1-0/+7
This is the gofrontend version of https://golang.org/cl/259297. This is required now because that change is in the 1.15.3 release. This requires changing the go/internal/gccgoimporter package, to skip the new annotation. This change will need to be ported to the gc and x/tools repos. For golang/go#41761 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/265258
2020-10-26syscall: import additional BSD-specific syscall wrappersNikhil Benesch2-0/+141
Import additional code from upstream for handing system calls on BSD systems. This makes the syscall package on NetBSD complete enough to compile the standard library. Updates golang/go#38538. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/265123
2020-10-23net/http/cgi: merge upstream changes to default env varsNikhil Benesch1-3/+3
Incorporate upstream modifications to the cgi package's set of rules about which environment variables should be inherited by child processes by default on each platform. In particular this permits tests to pass on NetBSD by preserving the value of the LD_LIBRARY_PATH environment variable. This is a partial backport of the following upstream CLs: https://golang.org/cl/263802 https://golang.org/cl/263577 https://golang.org/cl/254740 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/264097
2020-10-21syscall: only compile ptrace varargs shim on LinuxNikhil Benesch12-14/+14
Only compile the __go_ptrace varargs shim on Linux to avoid compilation failures on some other platforms. The C ptrace function is not entirely portable (e.g., NetBSD has `int data` instead of `void* data`), and so far Linux is the only platform that needs the varargs shim. Additionally, make the types in the ptrace and raw_ptrace function declarations match. This makes it more clear that the only difference between the two is that calls via the former are allowed to block while calls via the latter are not. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/263517
2020-10-21syscall: import upstream code for BSD sockets and sysctlsNikhil Benesch3-1/+103
Import some missing upstream code for BSD sockets and sysctls and adapt it for gccgo. Updates golang/go#38538. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/261137
2020-10-20syscall: remove Sendfile on NetBSDNikhil Benesch2-3/+3
NetBSD does not support the sendfile syscall. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/263521
2020-10-14libgo: export NetBSD-specific types in mksysinfo.shNikhil Benesch1-7/+0
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
2020-10-14runtime: correct semaphore implementation on netbsdNikhil Benesch6-7/+29
NetBSD's semaphores use the underlying lighweight process mechanism (LWP) on NetBSD, rather than pthreads. This means the m.prodcid needs to be set to the LWP ID rather than the pthread ID in order for unpark notifications to get sent to the right place. Introduce a new getProcID() method that selects the correct ID for the platform. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/261742
2020-10-13syscall: port fix for netbsd unix sockets from upstreamNikhil Benesch1-3/+9
NetBSD does not include the null terminator when in its reported socket length. Port the upstream bugfix for the issue (#6627). This was likely missed during the usual upstream merge because the gc and gccgo socket implementations have diverged quite a bit. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/261741
2020-10-13reflect: ensure uniqueness of type descriptors on AIX.Clément Chigot7-29/+157
On AIX, duplication of type descriptors can occur if one is declared in the libgo and one in the Go program being compiled. The AIX linker isn't able to merge them together as Linux one does. One solution is to always load libgo first but that needs a huge mechanism in gcc core. Thus, this patch ensures that the duplication isn't visible for the end user. In reflect and internal/reflectlite, the comparison of rtypes is made on their name and not only on their addresses. In reflect, toType() function is using a canonicalization map to force rtypes having the same rtype.String() to return the same Type. This can't be made in internal/reflectlite as it needs sync package. But, for now, it doesn't matter as internal/reflectlite is not widely used. Fixes golang/go#39276 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/260158
2020-10-01compiler: set varargs correctly for type of method expressionIan Lance Taylor1-1/+7
Fixes golang/go#41737 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/258977
2020-09-30libgo: add 32-bit RISC-V (RV32) supportMaciej W. Rozycki16-10/+84
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
2020-09-28net: add hurd build tagIan Lance Taylor1-1/+1
Patch from Svante Signell. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/257857
2020-09-23libgo: update to Go1.15.2 releaseIan Lance Taylor30-104/+704
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/256618
2020-09-22syscall: fix TestForeground for AIXClément Chigot2-1/+17
Syscall function can't be used on AIX. Therefore, Ioctl in TestForeground must call raw_ioctl. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/175080
2020-09-22syscall: remove ptrace syscall on ppc64Clément Chigot2-3/+3
ptrace is available only for 32 bits programs. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/252558
2020-09-22runtime, net: fix build errors on AIXClément Chigot4-9/+7
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/235158
2020-09-21go/internal/gccgoimporter: recognize aixbigafMagic archivesClément Chigot1-1/+1
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/255201
2020-09-17libgo: fix ptrace syscall hooks into glibcPaul E. Murphy2-2/+2
ptrace is actually declared as a variadic function. On ppc64le the ABI requires to the caller to allocate space for the parameters and allows the caller to modify them. On ppc64le, depending on how and what version of GCC is used, it will save to parameter save area. This happened to clobber a saved LR, and caused syscall.TestExecPtrace to fail with a timeout when the tracee segfaults, and waits for the parent process to inspect. Wrap this function to avoid directly calling glibc's ptrace from go. Fixes golang/go#36698 Fixes go/92567 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/254755
2020-08-26cmd: add -maix32 to gcc calls for aix/ppcClément Chigot2-1/+8
As gcc might now be compiled in 64bit, -maix32 must always be added to ensure that created objects will be 32bit. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/250778
2020-08-11internal/syscall/unix: restore ppc build tagIan Lance Taylor1-1/+1
It was accidentally lost in the 1.15rc1 merge. Fixes PR go/96567 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/247843
2020-08-10runtime: revert eqtype for AIXClément Chigot4-11/+64
AIX linker is not able to merge identical type descriptors in a single symbol if there are coming from different object or shared object files. This results into several pointers referencing the same type descriptors. Thus, eqtype is needed to ensure that these different symbols will be considered as the same type descriptor. Fixes golang/go#39276 gcc/go/ChangeLog: * go-c.h (struct go_create_gogo_args): Add need_eqtype field. * go-lang.c (go_langhook_init): Set need_eqtype. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/235697
2020-08-07libgo: update to Go1.15rc2 releaseIan Lance Taylor19-194/+307
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/247517
2020-08-03internal/syscall/unix: correct ia64 syscall numbersIan Lance Taylor1-2/+2
Per Andreas Schwab. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/246264
2020-08-03internal/syscall/unix: define copyFileRangeTrap for all architecturesIan Lance Taylor9-26/+34
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/246363
2020-08-01libgo: update to go1.15rc1Ian Lance Taylor886-14825/+45550
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/245157
2020-07-27compiler,runtime: pass only ptr and len to some runtime callsIan Lance Taylor5-63/+68
This ports https://golang.org/cl/227163 to the Go frontend. This is a step toward moving up to the go1.15rc1 release. Original CL description: cmd/compile,runtime: pass only ptr and len to some runtime calls Some runtime calls accept a slice, but only use ptr and len. This change modifies most such routines to accept only ptr and len. After this change, the only runtime calls that accept an unnecessary cap arg are concatstrings and slicerunetostring. Neither is particularly common, and both are complicated to modify. Negligible compiler performance impact. Shrinks binaries a little. There are only a few regressions; the one I investigated was due to register allocation fluctuation. Passes 'go test -race std cmd', modulo golang/go#38265 and golang/go#38266. Wow, does that take a long time to run. file before after Δ % compile 19655024 19655152 +128 +0.001% cover 5244840 5236648 -8192 -0.156% dist 3662376 3658280 -4096 -0.112% link 6680056 6675960 -4096 -0.061% pprof 14789844 14777556 -12288 -0.083% test2json 2824744 2820648 -4096 -0.145% trace 11647876 11639684 -8192 -0.070% vet 8260472 8256376 -4096 -0.050% total 115163736 115118808 -44928 -0.039% For golang/go#36890 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/245099
2020-07-17libgo: update to Go 1.14.6 releaseIan Lance Taylor22-813/+1128
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/243317
2020-07-10libgo: update to Go 1.14.4 releaseIan Lance Taylor19-79/+396
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/241999
2020-06-15libgo: update x/sys/cpu to add all GOARCHes supported by gccgoTobias Klauser1-1/+6
CL 237897 added additional GOARCHes supported by gccgo to x/sys/cpu. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/238038
2020-06-15internal/syscall/unix: use getrandom_linux_generic.go on riscvTobias Klauser1-1/+1
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/237899
2020-06-12runtime: fix arenaBaseOffset for aix/ppcClément Chigot2-2/+2
The arenaBaseOffset modifications was aimed only for aix/ppc64. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/237038
2020-05-25libgo: update x/sys/cpu after gccgo support addedClément Chigot2-1/+28
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/234597
2020-05-11runtime: fix TestCallersNilPointerPaniceric fang1-12/+20
The expected result of TestCallersNilPointerPanic has changed in GoLLVM. This CL makes some elements of the expected result optional so that this test passes in both gccgo and GoLLVM. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/230138
2020-05-11syscall: append to environment in tests, don't clobber itIan Lance Taylor1-3/+6
This is a partial backport of https://golang.org/cl/233318. It's only a partial backport because part of the change was already applied to libgo in CL 193497 as part of the update to the Go 1.13beta1 release. Fixes PR go/95061 Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/233359
generated by cgit v1.1 at 2025-08-05 00:04:57 +0000