hotfix: duplicated definition of symbol dlopen on go1.23.9

go.mod

@@ -161,7 +161,7 @@ require (
 	github.com/docker/libtrust v0.0.0-20160708172513-aabc10ec26b7 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/eapache/queue/v2 v2.0.0-20230407133247-75960ed334e4 // indirect
-	github.com/ebitengine/purego v0.8.2 // indirect
+	github.com/ebitengine/purego v0.9.0-alpha.3.0.20250507171635-5047c08daa38 // indirect
 	github.com/emicklei/go-restful/v3 v3.12.2 // indirect
 	github.com/envoyproxy/go-control-plane/ratelimit v0.1.0 // indirect
 	github.com/envoyproxy/protoc-gen-validate v1.2.1 // indirect

go.sum

@@ -265,8 +265,8 @@ github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+m
 github.com/dvsekhvalnov/jose2go v0.0.0-20170216131308-f21a8cedbbae/go.mod h1:7BvyPhdbLxMXIYTFPLsyJRFMsKmOZnQmzh6Gb+uquuM=
 github.com/eapache/queue/v2 v2.0.0-20230407133247-75960ed334e4 h1:8EXxF+tCLqaVk8AOC29zl2mnhQjwyLxxOTuhUazWRsg=
 github.com/eapache/queue/v2 v2.0.0-20230407133247-75960ed334e4/go.mod h1:I5sHm0Y0T1u5YjlyqC5GVArM7aNZRUYtTjmJ8mPJFds=
-github.com/ebitengine/purego v0.8.2 h1:jPPGWs2sZ1UgOSgD2bClL0MJIqu58nOmIcBuXr62z1I=
+github.com/ebitengine/purego v0.9.0-alpha.3.0.20250507171635-5047c08daa38 h1:61WY14WhyU89bEJCjegpt6b8wDNsU+Z1416JGwfEKwI=
-github.com/ebitengine/purego v0.8.2/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
+github.com/ebitengine/purego v0.9.0-alpha.3.0.20250507171635-5047c08daa38/go.mod h1:iIjxzd6CiRiOG0UyXP+V1+jWqUXVjPKLAI0mRfJZTmQ=
 github.com/emicklei/go-restful/v3 v3.12.2 h1:DhwDP0vY3k8ZzE0RunuJy8GhNpPL6zqLkDf9B/a0/xU=
 github.com/emicklei/go-restful/v3 v3.12.2/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/envoyproxy/go-control-plane v0.13.4 h1:zEqyPVyku6IvWCFwux4x9RxkLOMUL+1vC9xUFv5l2/M=

vendor/github.com/ebitengine/purego/README.md

@@ -36,7 +36,7 @@ except for float arguments and return values.
 ## Example
 
 The example below only showcases purego use for macOS and Linux. The other platforms require special handling which can
-be seen in the complete example at [examples/libc](https://github.com/ebitengine/purego/tree/main/examples/libc) which supports Windows and FreeBSD.
+be seen in the complete example at [examples/libc](https://github.com/ebitengine/purego/tree/main/examples/libc) which supports FreeBSD and Windows.
 
 ```go
 package main
@@ -92,6 +92,7 @@ This is a list of the copied files:
 * `internal/fakecgo/iscgo.go` from package `runtime/cgo`
 * `internal/fakecgo/setenv.go` from package `runtime/cgo`
 * `internal/fakecgo/freebsd.go` from package `runtime/cgo`
+* `internal/fakecgo/netbsd.go` from package `runtime/cgo`
 
 The files `abi_*.h` and `internal/fakecgo/abi_*.h` are the same because Bazel does not support cross-package use of
 `#include` so we need each one once per package. (cf. [issue](https://github.com/bazelbuild/rules_go/issues/3636))

vendor/github.com/ebitengine/purego/cgo.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 purego
 

vendor/github.com/ebitengine/purego/dlerror.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2023 The Ebitengine Authors
 
-//go:build darwin || freebsd || linux
+//go:build darwin || freebsd || linux || netbsd
 
 package purego
 

vendor/github.com/ebitengine/purego/dlfcn.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build (darwin || freebsd || linux) && !android && !faketime
+//go:build (darwin || freebsd || linux || netbsd) && !android && !faketime
 
 package purego
 
@@ -83,17 +83,17 @@ func loadSymbol(handle uintptr, name string) (uintptr, error) {
 // appear to work if you link directly to the C function on darwin arm64.
 
 //go:linkname dlopen dlopen
-var dlopen uintptr
+var dlopen uint8
 var dlopenABI0 = uintptr(unsafe.Pointer(&dlopen))
 
 //go:linkname dlsym dlsym
-var dlsym uintptr
+var dlsym uint8
 var dlsymABI0 = uintptr(unsafe.Pointer(&dlsym))
 
 //go:linkname dlclose dlclose
-var dlclose uintptr
+var dlclose uint8
 var dlcloseABI0 = uintptr(unsafe.Pointer(&dlclose))
 
 //go:linkname dlerror dlerror
-var dlerror uintptr
+var dlerror uint8
 var dlerrorABI0 = uintptr(unsafe.Pointer(&dlerror))

vendor/github.com/ebitengine/purego/dlfcn_darwin.go

@@ -17,8 +17,3 @@ const (
 //go:cgo_import_dynamic purego_dlsym dlsym "/usr/lib/libSystem.B.dylib"
 //go:cgo_import_dynamic purego_dlerror dlerror "/usr/lib/libSystem.B.dylib"
 //go:cgo_import_dynamic purego_dlclose dlclose "/usr/lib/libSystem.B.dylib"
-
-//go:cgo_import_dynamic purego_dlopen dlopen "/usr/lib/libSystem.B.dylib"
-//go:cgo_import_dynamic purego_dlsym dlsym "/usr/lib/libSystem.B.dylib"
-//go:cgo_import_dynamic purego_dlerror dlerror "/usr/lib/libSystem.B.dylib"
-//go:cgo_import_dynamic purego_dlclose dlclose "/usr/lib/libSystem.B.dylib"

vendor/github.com/ebitengine/purego/dlfcn_netbsd.go

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2025 The Ebitengine Authors
+
+package purego
+
+// Source for constants: https://github.com/NetBSD/src/blob/trunk/include/dlfcn.h
+
+const (
+	intSize      = 32 << (^uint(0) >> 63) // 32 or 64
+	RTLD_DEFAULT = 1<<intSize - 2         // Pseudo-handle for dlsym so search for any loaded symbol
+	RTLD_LAZY    = 0x00000001             // Relocations are performed at an implementation-dependent time.
+	RTLD_NOW     = 0x00000002             // Relocations are performed when the object is loaded.
+	RTLD_LOCAL   = 0x00000000             // All symbols are not made available for relocation processing by other modules.
+	RTLD_GLOBAL  = 0x00000100             // All symbols are available for relocation processing of other modules.
+)

vendor/github.com/ebitengine/purego/dlfcn_nocgo_netbsd.go

@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2025 The Ebitengine Authors
+
+package purego
+
+//go:cgo_import_dynamic purego_dlopen dlopen "libc.so"
+//go:cgo_import_dynamic purego_dlsym dlsym "libc.so"
+//go:cgo_import_dynamic purego_dlerror dlerror "libc.so"
+//go:cgo_import_dynamic purego_dlclose dlclose "libc.so"

vendor/github.com/ebitengine/purego/dlfcn_stubs.s

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build darwin || !cgo && (freebsd || linux) && !faketime
+//go:build darwin || !cgo && (freebsd || linux || netbsd) && !faketime
 
 #include "textflag.h"
 

vendor/github.com/ebitengine/purego/func.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build darwin || freebsd || linux || windows
+//go:build darwin || freebsd || linux || netbsd || windows
 
 package purego
 
@@ -10,14 +10,20 @@ import (
 	"math"
 	"reflect"
 	"runtime"
+	"strconv"
+	"sync"
 	"unsafe"
 
 	"github.com/ebitengine/purego/internal/strings"
 )
 
+var thePool = sync.Pool{New: func() any {
+	return new(syscall15Args)
+}}
+
 // RegisterLibFunc is a wrapper around RegisterFunc that uses the C function returned from Dlsym(handle, name).
 // It panics if it can't find the name symbol.
-func RegisterLibFunc(fptr interface{}, handle uintptr, name string) {
+func RegisterLibFunc(fptr any, handle uintptr, name string) {
 	sym, err := loadSymbol(handle, name)
 	if err != nil {
 		panic(err)
@@ -60,7 +66,7 @@ func RegisterLibFunc(fptr interface{}, handle uintptr, name string) {
 //
 // There is a special case when the last argument of fptr is a variadic interface (or []interface}
 // it will be expanded into a call to the C function as if it had the arguments in that slice.
-// This means that using arg ...interface{} is like a cast to the function with the arguments inside arg.
+// This means that using arg ...any is like a cast to the function with the arguments inside arg.
 // This is not the same as C variadic.
 //
 // # Memory
@@ -105,7 +111,7 @@ func RegisterLibFunc(fptr interface{}, handle uintptr, name string) {
 //	defer free(mustFree)
 //
 // [Cgo rules]: https://pkg.go.dev/cmd/cgo#hdr-Go_references_to_C
-func RegisterFunc(fptr interface{}, cfn uintptr) {
+func RegisterFunc(fptr any, cfn uintptr) {
 	fn := reflect.ValueOf(fptr).Elem()
 	ty := fn.Type()
 	if ty.Kind() != reflect.Func {
@@ -156,7 +162,7 @@ func RegisterFunc(fptr interface{}, cfn uintptr) {
 				if is32bit {
 					panic("purego: floats only supported on 64bit platforms")
 				}
-				if floats < numOfFloats {
+				if floats < numOfFloatRegisters {
 					floats++
 				} else {
 					stack++
@@ -200,21 +206,8 @@ func RegisterFunc(fptr interface{}, cfn uintptr) {
 		}
 	}
 	v := reflect.MakeFunc(ty, func(args []reflect.Value) (results []reflect.Value) {
-		if len(args) > 0 {
-			if variadic, ok := args[len(args)-1].Interface().([]interface{}); ok {
-				// subtract one from args bc the last argument in args is []interface{}
-				// which we are currently expanding
-				tmp := make([]reflect.Value, len(args)-1+len(variadic))
-				n := copy(tmp, args[:len(args)-1])
-				for i, v := range variadic {
-					tmp[n+i] = reflect.ValueOf(v)
-				}
-				args = tmp
-			}
-		}
 		var sysargs [maxArgs]uintptr
-		stack := sysargs[numOfIntegerRegisters():]
+		var floats [numOfFloatRegisters]uintptr
-		var floats [numOfFloats]uintptr
 		var numInts int
 		var numFloats int
 		var numStack int
@@ -222,7 +215,7 @@ func RegisterFunc(fptr interface{}, cfn uintptr) {
 		if runtime.GOARCH == "arm64" || runtime.GOOS != "windows" {
 			// Windows arm64 uses the same calling convention as macOS and Linux
 			addStack = func(x uintptr) {
-				stack[numStack] = x
+				sysargs[numOfIntegerRegisters()+numStack] = x
 				numStack++
 			}
 			addInt = func(x uintptr) {
@@ -255,12 +248,13 @@ func RegisterFunc(fptr interface{}, cfn uintptr) {
 			addFloat = addStack
 		}
 
-		var keepAlive []interface{}
+		var keepAlive []any
 		defer func() {
 			runtime.KeepAlive(keepAlive)
 			runtime.KeepAlive(args)
 		}()
-		var syscall syscall15Args
+
+		var arm64_r8 uintptr
 		if ty.NumOut() == 1 && ty.Out(0).Kind() == reflect.Struct {
 			outType := ty.Out(0)
 			if runtime.GOARCH == "amd64" && outType.Size() > maxRegAllocStructSize {
@@ -272,53 +266,63 @@ func RegisterFunc(fptr interface{}, cfn uintptr) {
 				if !isAllFloats || numFields > 4 {
 					val := reflect.New(outType)
 					keepAlive = append(keepAlive, val)
-					syscall.arm64_r8 = val.Pointer()
+					arm64_r8 = val.Pointer()
 				}
 			}
 		}
-		for _, v := range args {
+		for i, v := range args {
-			switch v.Kind() {
+			if variadic, ok := args[i].Interface().([]any); ok {
-			case reflect.String:
+				if i != len(args)-1 {
-				ptr := strings.CString(v.String())
+					panic("purego: can only expand last parameter")
-				keepAlive = append(keepAlive, ptr)
-				addInt(uintptr(unsafe.Pointer(ptr)))
-			case reflect.Uintptr, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
-				addInt(uintptr(v.Uint()))
-			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-				addInt(uintptr(v.Int()))
-			case reflect.Ptr, reflect.UnsafePointer, reflect.Slice:
-				// There is no need to keepAlive this pointer separately because it is kept alive in the args variable
-				addInt(v.Pointer())
-			case reflect.Func:
-				addInt(NewCallback(v.Interface()))
-			case reflect.Bool:
-				if v.Bool() {
-					addInt(1)
-				} else {
-					addInt(0)
 				}
-			case reflect.Float32:
+				for _, x := range variadic {
-				addFloat(uintptr(math.Float32bits(float32(v.Float()))))
+					keepAlive = addValue(reflect.ValueOf(x), keepAlive, addInt, addFloat, addStack, &numInts, &numFloats, &numStack)
-			case reflect.Float64:
+				}
-				addFloat(uintptr(math.Float64bits(v.Float())))
+				continue
-			case reflect.Struct:
-				keepAlive = addStruct(v, &numInts, &numFloats, &numStack, addInt, addFloat, addStack, keepAlive)
-			default:
-				panic("purego: unsupported kind: " + v.Kind().String())
 			}
+			if runtime.GOARCH == "arm64" && runtime.GOOS == "darwin" &&
+				(numInts >= numOfIntegerRegisters() || numFloats >= numOfFloatRegisters) && v.Kind() != reflect.Struct { // hit the stack
+				fields := make([]reflect.StructField, len(args[i:]))
+
+				for j, val := range args[i:] {
+					if val.Kind() == reflect.String {
+						ptr := strings.CString(v.String())
+						keepAlive = append(keepAlive, ptr)
+						val = reflect.ValueOf(ptr)
+						args[i+j] = val
+					}
+					fields[j] = reflect.StructField{
+						Name: "X" + strconv.Itoa(j),
+						Type: val.Type(),
+					}
+				}
+				structType := reflect.StructOf(fields)
+				structInstance := reflect.New(structType).Elem()
+				for j, val := range args[i:] {
+					structInstance.Field(j).Set(val)
+				}
+				placeRegisters(structInstance, addFloat, addInt)
+				break
+			}
+			keepAlive = addValue(v, keepAlive, addInt, addFloat, addStack, &numInts, &numFloats, &numStack)
 		}
+
+		syscall := thePool.Get().(*syscall15Args)
+		defer thePool.Put(syscall)
+
 		if runtime.GOARCH == "arm64" || runtime.GOOS != "windows" {
 			// Use the normal arm64 calling convention even on Windows
-			syscall = syscall15Args{
+			*syscall = syscall15Args{
 				cfn,
 				sysargs[0], sysargs[1], sysargs[2], sysargs[3], sysargs[4], sysargs[5],
 				sysargs[6], sysargs[7], sysargs[8], sysargs[9], sysargs[10], sysargs[11],
 				sysargs[12], sysargs[13], sysargs[14],
 				floats[0], floats[1], floats[2], floats[3], floats[4], floats[5], floats[6], floats[7],
-				syscall.arm64_r8,
+				arm64_r8,
 			}
-			runtime_cgocall(syscall15XABI0, unsafe.Pointer(&syscall))
+			runtime_cgocall(syscall15XABI0, unsafe.Pointer(syscall))
 		} else {
+			*syscall = syscall15Args{}
 			// This is a fallback for Windows amd64, 386, and arm. Note this may not support floats
 			syscall.a1, syscall.a2, _ = syscall_syscall15X(cfn, sysargs[0], sysargs[1], sysargs[2], sysargs[3], sysargs[4],
 				sysargs[5], sysargs[6], sysargs[7], sysargs[8], sysargs[9], sysargs[10], sysargs[11],
@@ -357,15 +361,54 @@ func RegisterFunc(fptr interface{}, cfn uintptr) {
 			// On 32bit platforms syscall.r2 is the upper part of a 64bit return.
 			v.SetFloat(math.Float64frombits(uint64(syscall.f1)))
 		case reflect.Struct:
-			v = getStruct(outType, syscall)
+			v = getStruct(outType, *syscall)
 		default:
 			panic("purego: unsupported return kind: " + outType.Kind().String())
 		}
-		return []reflect.Value{v}
+		if len(args) > 0 {
+			// reuse args slice instead of allocating one when possible
+			args[0] = v
+			return args[:1]
+		} else {
+			return []reflect.Value{v}
+		}
 	})
 	fn.Set(v)
 }
 
+func addValue(v reflect.Value, keepAlive []any, addInt func(x uintptr), addFloat func(x uintptr), addStack func(x uintptr), numInts *int, numFloats *int, numStack *int) []any {
+	switch v.Kind() {
+	case reflect.String:
+		ptr := strings.CString(v.String())
+		keepAlive = append(keepAlive, ptr)
+		addInt(uintptr(unsafe.Pointer(ptr)))
+	case reflect.Uintptr, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		addInt(uintptr(v.Uint()))
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		addInt(uintptr(v.Int()))
+	case reflect.Ptr, reflect.UnsafePointer, reflect.Slice:
+		// There is no need to keepAlive this pointer separately because it is kept alive in the args variable
+		addInt(v.Pointer())
+	case reflect.Func:
+		addInt(NewCallback(v.Interface()))
+	case reflect.Bool:
+		if v.Bool() {
+			addInt(1)
+		} else {
+			addInt(0)
+		}
+	case reflect.Float32:
+		addFloat(uintptr(math.Float32bits(float32(v.Float()))))
+	case reflect.Float64:
+		addFloat(uintptr(math.Float64bits(v.Float())))
+	case reflect.Struct:
+		keepAlive = addStruct(v, numInts, numFloats, numStack, addInt, addFloat, addStack, keepAlive)
+	default:
+		panic("purego: unsupported kind: " + v.Kind().String())
+	}
+	return keepAlive
+}
+
 // maxRegAllocStructSize is the biggest a struct can be while still fitting in registers.
 // if it is bigger than this than enough space must be allocated on the heap and then passed into
 // the function as the first parameter on amd64 or in R8 on arm64.

vendor/github.com/ebitengine/purego/go_runtime.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build darwin || freebsd || linux || windows
+//go:build darwin || freebsd || linux || netbsd || windows
 
 package purego
 

vendor/github.com/ebitengine/purego/internal/cgo/dlfcn_cgo_unix.go

@@ -1,12 +1,12 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2024 The Ebitengine Authors
 
-//go:build freebsd || linux
+//go:build freebsd || linux || netbsd
 
 package cgo
 
 /*
- #cgo LDFLAGS: -ldl
+#cgo !netbsd LDFLAGS: -ldl
 
 #include <dlfcn.h>
 #include <stdlib.h>

vendor/github.com/ebitengine/purego/internal/cgo/syscall_cgo_unix.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build freebsd || (linux && !(arm64 || amd64))
+//go:build freebsd || (linux && !(arm64 || amd64)) || netbsd
 
 package cgo
 
@@ -9,7 +9,7 @@ package cgo
 // because Cgo and assembly files can't be in the same package.
 
 /*
- #cgo LDFLAGS: -ldl
+#cgo !netbsd LDFLAGS: -ldl
 
 #include <stdint.h>
 #include <dlfcn.h>

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

vendor/github.com/ebitengine/purego/nocgo.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 purego
 

vendor/github.com/ebitengine/purego/struct_amd64.go

@@ -85,7 +85,7 @@ const (
 	_MEMORY   = 0b1111
 )
 
-func addStruct(v reflect.Value, numInts, numFloats, numStack *int, addInt, addFloat, addStack func(uintptr), keepAlive []interface{}) []interface{} {
+func addStruct(v reflect.Value, numInts, numFloats, numStack *int, addInt, addFloat, addStack func(uintptr), keepAlive []any) []any {
 	if v.Type().Size() == 0 {
 		return keepAlive
 	}
@@ -120,7 +120,7 @@ func postMerger(t reflect.Type) (passInMemory bool) {
 	if t.Size() <= 2*8 {
 		return false
 	}
-	return true // Go does not have an SSE/SEEUP type so this is always true
+	return true // Go does not have an SSE/SSEUP type so this is always true
 }
 
 func tryPlaceRegister(v reflect.Value, addFloat func(uintptr), addInt func(uintptr)) (ok bool) {
@@ -258,3 +258,7 @@ func placeStack(v reflect.Value, addStack func(uintptr)) {
 		}
 	}
 }
+
+func placeRegisters(v reflect.Value, addFloat func(uintptr), addInt func(uintptr)) {
+	panic("purego: not needed on amd64")
+}

vendor/github.com/ebitengine/purego/struct_arm64.go

@@ -65,7 +65,7 @@ const (
 	_INT      = 0b11
 )
 
-func addStruct(v reflect.Value, numInts, numFloats, numStack *int, addInt, addFloat, addStack func(uintptr), keepAlive []interface{}) []interface{} {
+func addStruct(v reflect.Value, numInts, numFloats, numStack *int, addInt, addFloat, addStack func(uintptr), keepAlive []any) []any {
 	if v.Type().Size() == 0 {
 		return keepAlive
 	}
@@ -73,8 +73,8 @@ func addStruct(v reflect.Value, numInts, numFloats, numStack *int, addInt, addFl
 	if hva, hfa, size := isHVA(v.Type()), isHFA(v.Type()), v.Type().Size(); hva || hfa || size <= 16 {
 		// if this doesn't fit entirely in registers then
 		// each element goes onto the stack
-		if hfa && *numFloats+v.NumField() > numOfFloats {
+		if hfa && *numFloats+v.NumField() > numOfFloatRegisters {
-			*numFloats = numOfFloats
+			*numFloats = numOfFloatRegisters
 		} else if hva && *numInts+v.NumField() > numOfIntegerRegisters() {
 			*numInts = numOfIntegerRegisters()
 		}
@@ -107,6 +107,8 @@ func placeRegisters(v reflect.Value, addFloat func(uintptr), addInt func(uintptr
 			} else {
 				f = v.Index(k)
 			}
+			align := byte(f.Type().Align()*8 - 1)
+			shift = (shift + align) &^ align
 			if shift >= 64 {
 				shift = 0
 				flushed = true
@@ -137,10 +139,11 @@ func placeRegisters(v reflect.Value, addFloat func(uintptr), addInt func(uintptr
 				val |= f.Uint() << shift
 				shift += 32
 				class |= _INT
-			case reflect.Uint64:
+			case reflect.Uint64, reflect.Uint, reflect.Uintptr:
 				addInt(uintptr(f.Uint()))
 				shift = 0
 				flushed = true
+				class = _NO_CLASS
 			case reflect.Int8:
 				val |= uint64(f.Int()&0xFF) << shift
 				shift += 8
@@ -153,10 +156,11 @@ func placeRegisters(v reflect.Value, addFloat func(uintptr), addInt func(uintptr
 				val |= uint64(f.Int()&0xFFFF_FFFF) << shift
 				shift += 32
 				class |= _INT
-			case reflect.Int64:
+			case reflect.Int64, reflect.Int:
 				addInt(uintptr(f.Int()))
 				shift = 0
 				flushed = true
+				class = _NO_CLASS
 			case reflect.Float32:
 				if class == _FLOAT {
 					addFloat(uintptr(val))
@@ -170,6 +174,12 @@ func placeRegisters(v reflect.Value, addFloat func(uintptr), addInt func(uintptr
 				addFloat(uintptr(math.Float64bits(float64(f.Float()))))
 				shift = 0
 				flushed = true
+				class = _NO_CLASS
+			case reflect.Ptr:
+				addInt(f.Pointer())
+				shift = 0
+				flushed = true
+				class = _NO_CLASS
 			case reflect.Array:
 				place(f)
 			default:
@@ -187,7 +197,7 @@ func placeRegisters(v reflect.Value, addFloat func(uintptr), addInt func(uintptr
 	}
 }
 
-func placeStack(v reflect.Value, keepAlive []interface{}, addInt func(uintptr)) []interface{} {
+func placeStack(v reflect.Value, keepAlive []any, addInt func(uintptr)) []any {
 	// Struct is too big to be placed in registers.
 	// Copy to heap and place the pointer in register
 	ptrStruct := reflect.New(v.Type())

vendor/github.com/ebitengine/purego/struct_other.go

@@ -7,10 +7,14 @@ package purego
 
 import "reflect"
 
-func addStruct(v reflect.Value, numInts, numFloats, numStack *int, addInt, addFloat, addStack func(uintptr), keepAlive []interface{}) []interface{} {
+func addStruct(v reflect.Value, numInts, numFloats, numStack *int, addInt, addFloat, addStack func(uintptr), keepAlive []any) []any {
 	panic("purego: struct arguments are not supported")
 }
 
 func getStruct(outType reflect.Type, syscall syscall15Args) (v reflect.Value) {
 	panic("purego: struct returns are not supported")
 }
+
+func placeRegisters(v reflect.Value, addFloat func(uintptr), addInt func(uintptr)) {
+	panic("purego: not needed on other platforms")
+}

vendor/github.com/ebitengine/purego/sys_amd64.s

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build darwin || freebsd || linux
+//go:build darwin || freebsd || linux || netbsd
 
 #include "textflag.h"
 #include "abi_amd64.h"

vendor/github.com/ebitengine/purego/sys_arm64.s

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build darwin || freebsd || linux || windows
+//go:build darwin || freebsd || linux || netbsd || windows
 
 #include "textflag.h"
 #include "go_asm.h"

vendor/github.com/ebitengine/purego/sys_unix_arm64.s

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2023 The Ebitengine Authors
 
-//go:build darwin || freebsd || linux
+//go:build darwin || freebsd || linux || netbsd
 
 #include "textflag.h"
 #include "go_asm.h"

vendor/github.com/ebitengine/purego/syscall.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build darwin || freebsd || linux || windows
+//go:build darwin || freebsd || linux || netbsd || windows
 
 package purego
 
@@ -13,8 +13,8 @@ package purego
 type CDecl struct{}
 
 const (
-	maxArgs     = 15
+	maxArgs             = 15
-	numOfFloats = 8 // arm64 and amd64 both have 8 float registers
+	numOfFloatRegisters = 8 // arm64 and amd64 both have 8 float registers
 )
 
 type syscall15Args struct {
@@ -27,6 +27,9 @@ type syscall15Args struct {
 // There is an internal maximum number of arguments that SyscallN can take. It panics
 // when the maximum is exceeded. It returns the result and the libc error code if there is one.
 //
+// In order to call this function properly make sure to follow all the rules specified in [unsafe.Pointer]
+// especially point 4.
+//
 // NOTE: SyscallN does not properly call functions that have both integer and float parameters.
 // See discussion comment https://github.com/ebiten/purego/pull/1#issuecomment-1128057607
 // for an explanation of why that is.

vendor/github.com/ebitengine/purego/syscall_cgo_linux.go

@@ -16,6 +16,6 @@ func syscall_syscall15X(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a
 	return cgo.Syscall15X(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15)
 }
 
-func NewCallback(_ interface{}) uintptr {
+func NewCallback(_ any) uintptr {
 	panic("purego: NewCallback on Linux is only supported on amd64/arm64")
 }

vendor/github.com/ebitengine/purego/syscall_sysv.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-FileCopyrightText: 2022 The Ebitengine Authors
 
-//go:build darwin || freebsd || (linux && (amd64 || arm64))
+//go:build darwin || freebsd || (linux && (amd64 || arm64)) || netbsd
 
 package purego
 
@@ -31,7 +31,7 @@ func syscall_syscall15X(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a
 // of uintptr. Only a limited number of callbacks may be created in a single Go process, and any memory allocated
 // for these callbacks is never released. At least 2000 callbacks can always be created. Although this function
 // provides similar functionality to windows.NewCallback it is distinct.
-func NewCallback(fn interface{}) uintptr {
+func NewCallback(fn any) uintptr {
 	ty := reflect.TypeOf(fn)
 	for i := 0; i < ty.NumIn(); i++ {
 		in := ty.In(i)
@@ -71,7 +71,7 @@ type callbackArgs struct {
 	result uintptr
 }
 
-func compileCallback(fn interface{}) uintptr {
+func compileCallback(fn any) uintptr {
 	val := reflect.ValueOf(fn)
 	if val.Kind() != reflect.Func {
 		panic("purego: the type must be a function but was not")
@@ -146,12 +146,12 @@ func callbackWrap(a *callbackArgs) {
 	var intsN int   // intsN represents the number of integer arguments processed
 	// stack points to the index into frame of the current stack element.
 	// The stack begins after the float and integer registers.
-	stack := numOfIntegerRegisters() + numOfFloats
+	stack := numOfIntegerRegisters() + numOfFloatRegisters
 	for i := range args {
 		var pos int
 		switch fnType.In(i).Kind() {
 		case reflect.Float32, reflect.Float64:
-			if floatsN >= numOfFloats {
+			if floatsN >= numOfFloatRegisters {
 				pos = stack
 				stack++
 			} else {
@@ -169,7 +169,7 @@ func callbackWrap(a *callbackArgs) {
 				stack++
 			} else {
 				// the integers begin after the floats in frame
-				pos = intsN + numOfFloats
+				pos = intsN + numOfFloatRegisters
 			}
 			intsN++
 		}

vendor/github.com/ebitengine/purego/syscall_windows.go

@@ -22,7 +22,7 @@ func syscall_syscall15X(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a
 // allocated for these callbacks is never released. Between NewCallback and NewCallbackCDecl, at least 1024
 // callbacks can always be created. Although this function is similiar to the darwin version it may act
 // differently.
-func NewCallback(fn interface{}) uintptr {
+func NewCallback(fn any) uintptr {
 	isCDecl := false
 	ty := reflect.TypeOf(fn)
 	for i := 0; i < ty.NumIn(); i++ {

vendor/github.com/ebitengine/purego/zcallback_amd64.s

@@ -1,6 +1,6 @@
 // Code generated by wincallback.go using 'go generate'. DO NOT EDIT.
 
-//go:build darwin || freebsd || linux
+//go:build darwin || freebsd || linux || netbsd
 
 // runtime·callbackasm is called by external code to
 // execute Go implemented callback function. It is not

vendor/github.com/ebitengine/purego/zcallback_arm64.s

@@ -1,6 +1,6 @@
 // Code generated by wincallback.go using 'go generate'. DO NOT EDIT.
 
-//go:build darwin || freebsd || linux
+//go:build darwin || freebsd || linux || netbsd
 
 // External code calls into callbackasm at an offset corresponding
 // to the callback index. Callbackasm is a table of MOV and B instructions.

vendor/modules.txt

@@ -673,7 +673,7 @@ github.com/dustin/go-humanize
 # github.com/eapache/queue/v2 v2.0.0-20230407133247-75960ed334e4
 ## explicit; go 1.20
 github.com/eapache/queue/v2
-# github.com/ebitengine/purego v0.8.2
+# github.com/ebitengine/purego v0.9.0-alpha.3.0.20250507171635-5047c08daa38
 ## explicit; go 1.18
 github.com/ebitengine/purego
 github.com/ebitengine/purego/internal/cgo