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author | Tobias Klauser <tklauser@distanz.ch> | 2019-10-04 10:11:29 +0200 |
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committer | Tobias Klauser <tobias.klauser@gmail.com> | 2019-10-28 10:25:44 +0000 |
commit | 33e3983db805ccf27f34a143d91e4346233a0ee2 (patch) | |
tree | d301f4d21dc8cd34c05bddd6494bbec66d995355 /src/runtime/cgo | |
parent | 152dddee7ec08e0bcf9acc41487a826f468ba8ab (diff) | |
download | go-33e3983db805ccf27f34a143d91e4346233a0ee2.tar.gz go-33e3983db805ccf27f34a143d91e4346233a0ee2.zip |
cmd/nm, runtime/cgo: add cgo support for freebsd/arm64
Based on work by Mikaƫl Urankar (@MikaelUrankar).
Updates #24715
Updates #35197
Change-Id: I91144101043d67d3f8444bf8389c9606abe2a66c
Reviewed-on: https://go-review.googlesource.com/c/go/+/199919
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/runtime/cgo')
-rw-r--r-- | src/runtime/cgo/gcc_freebsd_arm64.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/runtime/cgo/gcc_freebsd_arm64.c b/src/runtime/cgo/gcc_freebsd_arm64.c new file mode 100644 index 0000000000..dd8f888290 --- /dev/null +++ b/src/runtime/cgo/gcc_freebsd_arm64.c @@ -0,0 +1,68 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#include <sys/types.h> +#include <errno.h> +#include <sys/signalvar.h> +#include <pthread.h> +#include <signal.h> +#include <string.h> +#include "libcgo.h" +#include "libcgo_unix.h" + +static void* threadentry(void*); +static void (*setg_gcc)(void*); + +void +x_cgo_init(G *g, void (*setg)(void*)) +{ + pthread_attr_t attr; + size_t size; + + setg_gcc = setg; + pthread_attr_init(&attr); + pthread_attr_getstacksize(&attr, &size); + g->stacklo = (uintptr)&attr - size + 4096; + pthread_attr_destroy(&attr); +} + +void +_cgo_sys_thread_start(ThreadStart *ts) +{ + pthread_attr_t attr; + sigset_t ign, oset; + pthread_t p; + size_t size; + int err; + + SIGFILLSET(ign); + pthread_sigmask(SIG_SETMASK, &ign, &oset); + + pthread_attr_init(&attr); + pthread_attr_getstacksize(&attr, &size); + // Leave stacklo=0 and set stackhi=size; mstart will do the rest. + ts->g->stackhi = size; + err = _cgo_try_pthread_create(&p, &attr, threadentry, ts); + + pthread_sigmask(SIG_SETMASK, &oset, nil); + + if (err != 0) { + fprintf(stderr, "runtime/cgo: pthread_create failed: %s\n", strerror(err)); + abort(); + } +} + +extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g); + +static void* +threadentry(void *v) +{ + ThreadStart ts; + + ts = *(ThreadStart*)v; + free(v); + + crosscall1(ts.fn, setg_gcc, (void*)ts.g); + return nil; +} |