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runtime/cgo: consolidate netbsd cgo code

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All netbsd architectures now use the same code, deduplicate accordingly.

Change-Id: Ieb179fd76885b7af6d388d7f2aee0f9fac6f1264
Reviewed-on: https://go-review.googlesource.com/c/go/+/518621
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Joel Sing <joel@sing.id.au>
This commit is contained in:
Joel Sing 2023-08-11 22:46:32 +10:00
parent 23e4a4b6e5
commit 0ab0d4e33f
4 changed files with 2 additions and 217 deletions
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2
src/runtime/cgo/gcc_netbsd_386.c → src/runtime/cgo/gcc_netbsd.c
View file

@ -2,6 +2,8 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build netbsd && (386 || amd64 || arm || arm64)
#include <sys/types.h>
#include <pthread.h>
#include <signal.h>

72
src/runtime/cgo/gcc_netbsd_amd64.c
View file

@ -1,72 +0,0 @@
// Copyright 2009 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 <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*))
{
setg_gcc = setg;
_cgo_set_stacklo(g, NULL);
}
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) {
fatalf("pthread_create failed: %s", strerror(err));
}
}
extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
static void*
threadentry(void *v)
{
ThreadStart ts;
stack_t ss;
ts = *(ThreadStart*)v;
free(v);
// On NetBSD, a new thread inherits the signal stack of the
// creating thread. That confuses minit, so we remove that
// signal stack here before calling the regular mstart. It's
// a bit baroque to remove a signal stack here only to add one
// in minit, but it's a simple change that keeps NetBSD
// working like other OS's. At this point all signals are
// blocked, so there is no race.
memset(&ss, 0, sizeof ss);
ss.ss_flags = SS_DISABLE;
sigaltstack(&ss, nil);
crosscall1(ts.fn, setg_gcc, (void*)ts.g);
return nil;
}

72
src/runtime/cgo/gcc_netbsd_arm.c
View file

@ -1,72 +0,0 @@
// Copyright 2013 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 <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*))
{
setg_gcc = setg;
_cgo_set_stacklo(g, NULL);
}
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) {
fatalf("pthread_create failed: %s", strerror(err));
}
}
extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
static void*
threadentry(void *v)
{
ThreadStart ts;
stack_t ss;
ts = *(ThreadStart*)v;
free(v);
// On NetBSD, a new thread inherits the signal stack of the
// creating thread. That confuses minit, so we remove that
// signal stack here before calling the regular mstart. It's
// a bit baroque to remove a signal stack here only to add one
// in minit, but it's a simple change that keeps NetBSD
// working like other OS's. At this point all signals are
// blocked, so there is no race.
memset(&ss, 0, sizeof ss);
ss.ss_flags = SS_DISABLE;
sigaltstack(&ss, nil);
crosscall1(ts.fn, setg_gcc, (void*)ts.g);
return nil;
}

73
src/runtime/cgo/gcc_netbsd_arm64.c
View file

@ -1,73 +0,0 @@
// 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 <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*))
{
setg_gcc = setg;
_cgo_set_stacklo(g, NULL);
}
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) {
fatalf("pthread_create failed: %s", strerror(err));
}
}
extern void crosscall1(void (*fn)(void), void (*setg_gcc)(void*), void *g);
static void*
threadentry(void *v)
{
ThreadStart ts;
stack_t ss;
ts = *(ThreadStart*)v;
free(v);
// On NetBSD, a new thread inherits the signal stack of the
// creating thread. That confuses minit, so we remove that
// signal stack here before calling the regular mstart. It's
// a bit baroque to remove a signal stack here only to add one
// in minit, but it's a simple change that keeps NetBSD
// working like other OS's. At this point all signals are
// blocked, so there is no race.
memset(&ss, 0, sizeof ss);
ss.ss_flags = SS_DISABLE;
sigaltstack(&ss, nil);
crosscall1(ts.fn, setg_gcc, (void*)ts.g);
return nil;
}