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cmd,runtime: enable cgo for openbsd/arm64
Updates #31656. Change-Id: Ide6f829282fcdf20c67998b766a201a6a92c3035 Reviewed-on: https://go-review.googlesource.com/c/go/+/174132 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
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2
src/cmd/dist/build.go
vendored
2
src/cmd/dist/build.go
vendored
@ -1514,7 +1514,7 @@ var cgoEnabled = map[string]bool{
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"openbsd/386": true,
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"openbsd/amd64": true,
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"openbsd/arm": true,
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"openbsd/arm64": false,
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"openbsd/arm64": true,
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"plan9/386": false,
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"plan9/amd64": false,
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"plan9/arm": false,
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@ -13,6 +13,8 @@ import (
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func canInternalLink() bool {
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switch runtime.GOOS {
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case "aix":
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return false
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case "dragonfly":
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return false
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case "linux":
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@ -20,8 +22,11 @@ func canInternalLink() bool {
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case "arm64", "mips64", "mips64le", "mips", "mipsle", "ppc64", "ppc64le":
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return false
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}
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case "aix":
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return false
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case "openbsd":
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switch runtime.GOARCH {
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case "arm64":
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return false
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}
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}
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return true
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}
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67
src/runtime/cgo/gcc_openbsd_arm64.c
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67
src/runtime/cgo/gcc_openbsd_arm64.c
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@ -0,0 +1,67 @@
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include <sys/types.h>
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#include <pthread.h>
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#include <signal.h>
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#include <string.h>
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#include "libcgo.h"
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#include "libcgo_unix.h"
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static void* threadentry(void*);
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static void (*setg_gcc)(void*);
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void
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x_cgo_init(G *g, void (*setg)(void*))
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{
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pthread_attr_t attr;
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size_t size;
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setg_gcc = setg;
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pthread_attr_init(&attr);
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pthread_attr_getstacksize(&attr, &size);
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g->stacklo = (uintptr)&attr - size + 4096;
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pthread_attr_destroy(&attr);
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}
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void
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_cgo_sys_thread_start(ThreadStart *ts)
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{
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pthread_attr_t attr;
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sigset_t ign, oset;
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pthread_t p;
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size_t size;
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int err;
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sigfillset(&ign);
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pthread_sigmask(SIG_SETMASK, &ign, &oset);
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pthread_attr_init(&attr);
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pthread_attr_getstacksize(&attr, &size);
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// Leave stacklo=0 and set stackhi=size; mstart will do the rest.
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ts->g->stackhi = size;
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err = _cgo_try_pthread_create(&p, &attr, threadentry, ts);
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pthread_sigmask(SIG_SETMASK, &oset, nil);
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if (err != 0) {
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fprintf(stderr, "runtime/cgo: pthread_create failed: %s\n", strerror(err));
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abort();
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}
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}
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extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
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static void*
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threadentry(void *v)
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{
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ThreadStart ts;
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ts = *(ThreadStart*)v;
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free(v);
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crosscall1(ts.fn, setg_gcc, (void*)ts.g);
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return nil;
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}
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