hotfix: duplicated definition of symbol dlopen on go1.23.9

vendor/github.com/ebitengine/purego/internal/fakecgo/callbacks.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 package fakecgo
 

vendor/github.com/ebitengine/purego/internal/fakecgo/doc.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 // Package fakecgo implements the Cgo runtime (runtime/cgo) entirely in Go.
 // This allows code that calls into C to function properly when CGO_ENABLED=0.

vendor/github.com/ebitengine/purego/internal/fakecgo/go_libinit.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 package fakecgo
 

vendor/github.com/ebitengine/purego/internal/fakecgo/go_netbsd.go

@@ -0,0 +1,106 @@
+// Copyright 2011 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.
+
+//go:build !cgo && (amd64 || arm64)
+
+package fakecgo
+
+import "unsafe"
+
+//go:nosplit
+func _cgo_sys_thread_start(ts *ThreadStart) {
+	var attr pthread_attr_t
+	var ign, oset sigset_t
+	var p pthread_t
+	var size size_t
+	var err int
+
+	// fprintf(stderr, "runtime/cgo: _cgo_sys_thread_start: fn=%p, g=%p\n", ts->fn, ts->g); // debug
+	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 = uintptr(size)
+
+	err = _cgo_try_pthread_create(&p, &attr, unsafe.Pointer(threadentry_trampolineABI0), ts)
+
+	pthread_sigmask(SIG_SETMASK, &oset, nil)
+
+	if err != 0 {
+		print("fakecgo: pthread_create failed: ")
+		println(err)
+		abort()
+	}
+}
+
+// threadentry_trampolineABI0 maps the C ABI to Go ABI then calls the Go function
+//
+//go:linkname x_threadentry_trampoline threadentry_trampoline
+var x_threadentry_trampoline byte
+var threadentry_trampolineABI0 = &x_threadentry_trampoline
+
+//go:nosplit
+func threadentry(v unsafe.Pointer) unsafe.Pointer {
+	var ss stack_t
+	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.
+	ss.ss_flags = SS_DISABLE
+	sigaltstack(&ss, nil)
+
+	setg_trampoline(setg_func, uintptr(unsafe.Pointer(ts.g)))
+
+	// faking funcs in go is a bit a... involved - but the following works :)
+	fn := uintptr(unsafe.Pointer(&ts.fn))
+	(*(*func())(unsafe.Pointer(&fn)))()
+
+	return nil
+}
+
+// here we will store a pointer to the provided setg func
+var setg_func uintptr
+
+//go:nosplit
+func x_cgo_init(g *G, setg uintptr) {
+	var size size_t
+	var attr *pthread_attr_t
+
+	/* The memory sanitizer distributed with versions of clang
+	   before 3.8 has a bug: if you call mmap before malloc, mmap
+	   may return an address that is later overwritten by the msan
+	   library.  Avoid this problem by forcing a call to malloc
+	   here, before we ever call malloc.
+
+	   This is only required for the memory sanitizer, so it's
+	   unfortunate that we always run it.  It should be possible
+	   to remove this when we no longer care about versions of
+	   clang before 3.8.  The test for this is
+	   misc/cgo/testsanitizers.
+
+	   GCC works hard to eliminate a seemingly unnecessary call to
+	   malloc, so we actually use the memory we allocate.  */
+
+	setg_func = setg
+	attr = (*pthread_attr_t)(malloc(unsafe.Sizeof(*attr)))
+	if attr == nil {
+		println("fakecgo: malloc failed")
+		abort()
+	}
+	pthread_attr_init(attr)
+	pthread_attr_getstacksize(attr, &size)
+	// runtime/cgo uses __builtin_frame_address(0) instead of `uintptr(unsafe.Pointer(&size))`
+	// but this should be OK since we are taking the address of the first variable in this function.
+	g.stacklo = uintptr(unsafe.Pointer(&size)) - uintptr(size) + 4096
+	pthread_attr_destroy(attr)
+	free(unsafe.Pointer(attr))
+}

vendor/github.com/ebitengine/purego/internal/fakecgo/go_setenv.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 package fakecgo
 

vendor/github.com/ebitengine/purego/internal/fakecgo/go_util.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 package fakecgo
 

vendor/github.com/ebitengine/purego/internal/fakecgo/iscgo.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 // The runtime package contains an uninitialized definition
 // for runtime·iscgo. Override it to tell the runtime we're here.

vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 package fakecgo
 

vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_darwin.go

@@ -20,3 +20,7 @@ var (
 	PTHREAD_COND_INITIALIZER  = pthread_cond_t{sig: 0x3CB0B1BB}
 	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{sig: 0x32AAABA7}
 )
+
+type stack_t struct {
+	/* not implemented */
+}

vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_freebsd.go

@@ -14,3 +14,7 @@ var (
 	PTHREAD_COND_INITIALIZER  = pthread_cond_t(0)
 	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t(0)
 )
+
+type stack_t struct {
+	/* not implemented */
+}

vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_linux.go

@@ -14,3 +14,7 @@ var (
 	PTHREAD_COND_INITIALIZER  = pthread_cond_t{}
 	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{}
 )
+
+type stack_t struct {
+	/* not implemented */
+}

vendor/github.com/ebitengine/purego/internal/fakecgo/libcgo_netbsd.go

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2025 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+type (
+	pthread_cond_t  uintptr
+	pthread_mutex_t uintptr
+)
+
+var (
+	PTHREAD_COND_INITIALIZER  = pthread_cond_t(0)
+	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t(0)
+)
+
+// Source: https://github.com/NetBSD/src/blob/613e27c65223fd2283b6ed679da1197e12f50e27/sys/compat/linux/arch/m68k/linux_signal.h#L133
+type stack_t struct {
+	ss_sp    uintptr
+	ss_flags int32
+	ss_size  uintptr
+}
+
+// Source: https://github.com/NetBSD/src/blob/613e27c65223fd2283b6ed679da1197e12f50e27/sys/sys/signal.h#L261
+const SS_DISABLE = 0x004

vendor/github.com/ebitengine/purego/internal/fakecgo/netbsd.go

@@ -0,0 +1,23 @@
+// Copyright 2010 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.
+
+//go:build netbsd
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+// Supply environ and __progname, because we don't
+// link against the standard NetBSD crt0.o and the
+// libc dynamic library needs them.
+
+//go:linkname _environ environ
+//go:linkname _progname __progname
+//go:linkname ___ps_strings __ps_strings
+
+var (
+	_environ      uintptr
+	_progname     uintptr
+	___ps_strings uintptr
+)

vendor/github.com/ebitengine/purego/internal/fakecgo/setenv.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 package fakecgo
 

vendor/github.com/ebitengine/purego/internal/fakecgo/symbols.go

@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 package fakecgo
 
@@ -55,6 +55,11 @@ func abort() {
 	call5(abortABI0, 0, 0, 0, 0, 0)
 }
 
+//go:nosplit
+func sigaltstack(ss *stack_t, old_ss *stack_t) int32 {
+	return int32(call5(sigaltstackABI0, uintptr(unsafe.Pointer(ss)), uintptr(unsafe.Pointer(old_ss)), 0, 0, 0))
+}
+
 //go:nosplit
 func pthread_attr_init(attr *pthread_attr_t) int32 {
 	return int32(call5(pthread_attr_initABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0))
@@ -121,81 +126,85 @@ func pthread_setspecific(key pthread_key_t, value unsafe.Pointer) int32 {
 }
 
 //go:linkname _malloc _malloc
-var _malloc uintptr
+var _malloc uint8
 var mallocABI0 = uintptr(unsafe.Pointer(&_malloc))
 
 //go:linkname _free _free
-var _free uintptr
+var _free uint8
 var freeABI0 = uintptr(unsafe.Pointer(&_free))
 
 //go:linkname _setenv _setenv
-var _setenv uintptr
+var _setenv uint8
 var setenvABI0 = uintptr(unsafe.Pointer(&_setenv))
 
 //go:linkname _unsetenv _unsetenv
-var _unsetenv uintptr
+var _unsetenv uint8
 var unsetenvABI0 = uintptr(unsafe.Pointer(&_unsetenv))
 
 //go:linkname _sigfillset _sigfillset
-var _sigfillset uintptr
+var _sigfillset uint8
 var sigfillsetABI0 = uintptr(unsafe.Pointer(&_sigfillset))
 
 //go:linkname _nanosleep _nanosleep
-var _nanosleep uintptr
+var _nanosleep uint8
 var nanosleepABI0 = uintptr(unsafe.Pointer(&_nanosleep))
 
 //go:linkname _abort _abort
-var _abort uintptr
+var _abort uint8
 var abortABI0 = uintptr(unsafe.Pointer(&_abort))
 
+//go:linkname _sigaltstack _sigaltstack
+var _sigaltstack uint8
+var sigaltstackABI0 = uintptr(unsafe.Pointer(&_sigaltstack))
+
 //go:linkname _pthread_attr_init _pthread_attr_init
-var _pthread_attr_init uintptr
+var _pthread_attr_init uint8
 var pthread_attr_initABI0 = uintptr(unsafe.Pointer(&_pthread_attr_init))
 
 //go:linkname _pthread_create _pthread_create
-var _pthread_create uintptr
+var _pthread_create uint8
 var pthread_createABI0 = uintptr(unsafe.Pointer(&_pthread_create))
 
 //go:linkname _pthread_detach _pthread_detach
-var _pthread_detach uintptr
+var _pthread_detach uint8
 var pthread_detachABI0 = uintptr(unsafe.Pointer(&_pthread_detach))
 
 //go:linkname _pthread_sigmask _pthread_sigmask
-var _pthread_sigmask uintptr
+var _pthread_sigmask uint8
 var pthread_sigmaskABI0 = uintptr(unsafe.Pointer(&_pthread_sigmask))
 
 //go:linkname _pthread_self _pthread_self
-var _pthread_self uintptr
+var _pthread_self uint8
 var pthread_selfABI0 = uintptr(unsafe.Pointer(&_pthread_self))
 
 //go:linkname _pthread_get_stacksize_np _pthread_get_stacksize_np
-var _pthread_get_stacksize_np uintptr
+var _pthread_get_stacksize_np uint8
 var pthread_get_stacksize_npABI0 = uintptr(unsafe.Pointer(&_pthread_get_stacksize_np))
 
 //go:linkname _pthread_attr_getstacksize _pthread_attr_getstacksize
-var _pthread_attr_getstacksize uintptr
+var _pthread_attr_getstacksize uint8
 var pthread_attr_getstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_getstacksize))
 
 //go:linkname _pthread_attr_setstacksize _pthread_attr_setstacksize
-var _pthread_attr_setstacksize uintptr
+var _pthread_attr_setstacksize uint8
 var pthread_attr_setstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_setstacksize))
 
 //go:linkname _pthread_attr_destroy _pthread_attr_destroy
-var _pthread_attr_destroy uintptr
+var _pthread_attr_destroy uint8
 var pthread_attr_destroyABI0 = uintptr(unsafe.Pointer(&_pthread_attr_destroy))
 
 //go:linkname _pthread_mutex_lock _pthread_mutex_lock
-var _pthread_mutex_lock uintptr
+var _pthread_mutex_lock uint8
 var pthread_mutex_lockABI0 = uintptr(unsafe.Pointer(&_pthread_mutex_lock))
 
 //go:linkname _pthread_mutex_unlock _pthread_mutex_unlock
-var _pthread_mutex_unlock uintptr
+var _pthread_mutex_unlock uint8
 var pthread_mutex_unlockABI0 = uintptr(unsafe.Pointer(&_pthread_mutex_unlock))
 
 //go:linkname _pthread_cond_broadcast _pthread_cond_broadcast
-var _pthread_cond_broadcast uintptr
+var _pthread_cond_broadcast uint8
 var pthread_cond_broadcastABI0 = uintptr(unsafe.Pointer(&_pthread_cond_broadcast))
 
 //go:linkname _pthread_setspecific _pthread_setspecific
-var _pthread_setspecific uintptr
+var _pthread_setspecific uint8
 var pthread_setspecificABI0 = uintptr(unsafe.Pointer(&_pthread_setspecific))

vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_darwin.go

@@ -14,6 +14,7 @@ package fakecgo
 //go:cgo_import_dynamic purego_sigfillset sigfillset "/usr/lib/libSystem.B.dylib"
 //go:cgo_import_dynamic purego_nanosleep nanosleep "/usr/lib/libSystem.B.dylib"
 //go:cgo_import_dynamic purego_abort abort "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_sigaltstack sigaltstack "/usr/lib/libSystem.B.dylib"
 //go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "/usr/lib/libSystem.B.dylib"
 //go:cgo_import_dynamic purego_pthread_create pthread_create "/usr/lib/libSystem.B.dylib"
 //go:cgo_import_dynamic purego_pthread_detach pthread_detach "/usr/lib/libSystem.B.dylib"

vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_freebsd.go

@@ -14,6 +14,7 @@ package fakecgo
 //go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so.7"
 //go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so.7"
 //go:cgo_import_dynamic purego_abort abort "libc.so.7"
+//go:cgo_import_dynamic purego_sigaltstack sigaltstack "libc.so.7"
 //go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so"
 //go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so"
 //go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so"

vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_linux.go

@@ -14,6 +14,7 @@ package fakecgo
 //go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so.6"
 //go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so.6"
 //go:cgo_import_dynamic purego_abort abort "libc.so.6"
+//go:cgo_import_dynamic purego_sigaltstack sigaltstack "libc.so.6"
 //go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so.0"
 //go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so.0"
 //go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so.0"

vendor/github.com/ebitengine/purego/internal/fakecgo/symbols_netbsd.go

@@ -0,0 +1,30 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build !cgo
+
+package fakecgo
+
+//go:cgo_import_dynamic purego_malloc malloc "libc.so"
+//go:cgo_import_dynamic purego_free free "libc.so"
+//go:cgo_import_dynamic purego_setenv setenv "libc.so"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so"
+//go:cgo_import_dynamic purego_sigfillset sigfillset "libc.so"
+//go:cgo_import_dynamic purego_nanosleep nanosleep "libc.so"
+//go:cgo_import_dynamic purego_abort abort "libc.so"
+//go:cgo_import_dynamic purego_sigaltstack sigaltstack "libc.so"
+//go:cgo_import_dynamic purego_pthread_attr_init pthread_attr_init "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_create pthread_create "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_detach pthread_detach "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_self pthread_self "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_get_stacksize_np pthread_get_stacksize_np "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_attr_setstacksize pthread_attr_setstacksize "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "libpthread.so"
+//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "libpthread.so"

vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_stubs.s

@@ -3,7 +3,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build !cgo && (darwin || freebsd || linux)
+//go:build !cgo && (darwin || freebsd || linux || netbsd)
 
 #include "textflag.h"
 
@@ -37,6 +37,10 @@ TEXT _abort(SB), NOSPLIT|NOFRAME, $0-0
 	JMP purego_abort(SB)
 	RET
 
+TEXT _sigaltstack(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_sigaltstack(SB)
+	RET
+
 TEXT _pthread_attr_init(SB), NOSPLIT|NOFRAME, $0-0
 	JMP purego_pthread_attr_init(SB)
 	RET