feat: upgrade client-go version to v0.29.0 (#109)

* feat: upgrade client-go version to v0.29.0

* feat: upgrade coredns version

* chore: update README.md

vendor/github.com/ebitengine/purego/internal/fakecgo/abi_amd64.h

@@ -0,0 +1,99 @@
+// Copyright 2021 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.
+
+// Macros for transitioning from the host ABI to Go ABI0.
+//
+// These save the frame pointer, so in general, functions that use
+// these should have zero frame size to suppress the automatic frame
+// pointer, though it's harmless to not do this.
+
+#ifdef GOOS_windows
+
+// REGS_HOST_TO_ABI0_STACK is the stack bytes used by
+// PUSH_REGS_HOST_TO_ABI0.
+#define REGS_HOST_TO_ABI0_STACK (28*8 + 8)
+
+// PUSH_REGS_HOST_TO_ABI0 prepares for transitioning from
+// the host ABI to Go ABI0 code. It saves all registers that are
+// callee-save in the host ABI and caller-save in Go ABI0 and prepares
+// for entry to Go.
+//
+// Save DI SI BP BX R12 R13 R14 R15 X6-X15 registers and the DF flag.
+// Clear the DF flag for the Go ABI.
+// MXCSR matches the Go ABI, so we don't have to set that,
+// and Go doesn't modify it, so we don't have to save it.
+#define PUSH_REGS_HOST_TO_ABI0()	\
+	PUSHFQ			\
+	CLD			\
+	ADJSP	$(REGS_HOST_TO_ABI0_STACK - 8)	\
+	MOVQ	DI, (0*0)(SP)	\
+	MOVQ	SI, (1*8)(SP)	\
+	MOVQ	BP, (2*8)(SP)	\
+	MOVQ	BX, (3*8)(SP)	\
+	MOVQ	R12, (4*8)(SP)	\
+	MOVQ	R13, (5*8)(SP)	\
+	MOVQ	R14, (6*8)(SP)	\
+	MOVQ	R15, (7*8)(SP)	\
+	MOVUPS	X6, (8*8)(SP)	\
+	MOVUPS	X7, (10*8)(SP)	\
+	MOVUPS	X8, (12*8)(SP)	\
+	MOVUPS	X9, (14*8)(SP)	\
+	MOVUPS	X10, (16*8)(SP)	\
+	MOVUPS	X11, (18*8)(SP)	\
+	MOVUPS	X12, (20*8)(SP)	\
+	MOVUPS	X13, (22*8)(SP)	\
+	MOVUPS	X14, (24*8)(SP)	\
+	MOVUPS	X15, (26*8)(SP)
+
+#define POP_REGS_HOST_TO_ABI0()	\
+	MOVQ	(0*0)(SP), DI	\
+	MOVQ	(1*8)(SP), SI	\
+	MOVQ	(2*8)(SP), BP	\
+	MOVQ	(3*8)(SP), BX	\
+	MOVQ	(4*8)(SP), R12	\
+	MOVQ	(5*8)(SP), R13	\
+	MOVQ	(6*8)(SP), R14	\
+	MOVQ	(7*8)(SP), R15	\
+	MOVUPS	(8*8)(SP), X6	\
+	MOVUPS	(10*8)(SP), X7	\
+	MOVUPS	(12*8)(SP), X8	\
+	MOVUPS	(14*8)(SP), X9	\
+	MOVUPS	(16*8)(SP), X10	\
+	MOVUPS	(18*8)(SP), X11	\
+	MOVUPS	(20*8)(SP), X12	\
+	MOVUPS	(22*8)(SP), X13	\
+	MOVUPS	(24*8)(SP), X14	\
+	MOVUPS	(26*8)(SP), X15	\
+	ADJSP	$-(REGS_HOST_TO_ABI0_STACK - 8)	\
+	POPFQ
+
+#else
+// SysV ABI
+
+#define REGS_HOST_TO_ABI0_STACK (6*8)
+
+// SysV MXCSR matches the Go ABI, so we don't have to set that,
+// and Go doesn't modify it, so we don't have to save it.
+// Both SysV and Go require DF to be cleared, so that's already clear.
+// The SysV and Go frame pointer conventions are compatible.
+#define PUSH_REGS_HOST_TO_ABI0()	\
+	ADJSP	$(REGS_HOST_TO_ABI0_STACK)	\
+	MOVQ	BP, (5*8)(SP)	\
+	LEAQ	(5*8)(SP), BP	\
+	MOVQ	BX, (0*8)(SP)	\
+	MOVQ	R12, (1*8)(SP)	\
+	MOVQ	R13, (2*8)(SP)	\
+	MOVQ	R14, (3*8)(SP)	\
+	MOVQ	R15, (4*8)(SP)
+
+#define POP_REGS_HOST_TO_ABI0()	\
+	MOVQ	(0*8)(SP), BX	\
+	MOVQ	(1*8)(SP), R12	\
+	MOVQ	(2*8)(SP), R13	\
+	MOVQ	(3*8)(SP), R14	\
+	MOVQ	(4*8)(SP), R15	\
+	MOVQ	(5*8)(SP), BP	\
+	ADJSP	$-(REGS_HOST_TO_ABI0_STACK)
+
+#endif

vendor/github.com/ebitengine/purego/internal/fakecgo/abi_arm64.h

@@ -0,0 +1,39 @@
+// Copyright 2021 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.
+
+// Macros for transitioning from the host ABI to Go ABI0.
+//
+// These macros save and restore the callee-saved registers
+// from the stack, but they don't adjust stack pointer, so
+// the user should prepare stack space in advance.
+// SAVE_R19_TO_R28(offset) saves R19 ~ R28 to the stack space
+// of ((offset)+0*8)(RSP) ~ ((offset)+9*8)(RSP).
+//
+// SAVE_F8_TO_F15(offset) saves F8 ~ F15 to the stack space
+// of ((offset)+0*8)(RSP) ~ ((offset)+7*8)(RSP).
+//
+// R29 is not saved because Go will save and restore it.
+
+#define SAVE_R19_TO_R28(offset) \
+	STP	(R19, R20), ((offset)+0*8)(RSP) \
+	STP	(R21, R22), ((offset)+2*8)(RSP) \
+	STP	(R23, R24), ((offset)+4*8)(RSP) \
+	STP	(R25, R26), ((offset)+6*8)(RSP) \
+	STP	(R27, g), ((offset)+8*8)(RSP)
+#define RESTORE_R19_TO_R28(offset) \
+	LDP	((offset)+0*8)(RSP), (R19, R20) \
+	LDP	((offset)+2*8)(RSP), (R21, R22) \
+	LDP	((offset)+4*8)(RSP), (R23, R24) \
+	LDP	((offset)+6*8)(RSP), (R25, R26) \
+	LDP	((offset)+8*8)(RSP), (R27, g) /* R28 */
+#define SAVE_F8_TO_F15(offset) \
+	FSTPD	(F8, F9), ((offset)+0*8)(RSP) \
+	FSTPD	(F10, F11), ((offset)+2*8)(RSP) \
+	FSTPD	(F12, F13), ((offset)+4*8)(RSP) \
+	FSTPD	(F14, F15), ((offset)+6*8)(RSP)
+#define RESTORE_F8_TO_F15(offset) \
+	FLDPD	((offset)+0*8)(RSP), (F8, F9) \
+	FLDPD	((offset)+2*8)(RSP), (F10, F11) \
+	FLDPD	((offset)+4*8)(RSP), (F12, F13) \
+	FLDPD	((offset)+6*8)(RSP), (F14, F15)

vendor/github.com/ebitengine/purego/internal/fakecgo/asm_amd64.s

@@ -0,0 +1,39 @@
+// 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 "textflag.h"
+#include "abi_amd64.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+// This signature is known to SWIG, so we can't change it.
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0-0
+	PUSH_REGS_HOST_TO_ABI0()
+
+	// Make room for arguments to cgocallback.
+	ADJSP $0x18
+
+#ifndef GOOS_windows
+	MOVQ DI, 0x0(SP) // fn
+	MOVQ SI, 0x8(SP) // arg
+
+	// Skip n in DX.
+	MOVQ CX, 0x10(SP) // ctxt
+
+#else
+	MOVQ CX, 0x0(SP) // fn
+	MOVQ DX, 0x8(SP) // arg
+
+	// Skip n in R8.
+	MOVQ R9, 0x10(SP) // ctxt
+
+#endif
+
+	CALL runtime·cgocallback(SB)
+
+	ADJSP $-0x18
+	POP_REGS_HOST_TO_ABI0()
+	RET

vendor/github.com/ebitengine/purego/internal/fakecgo/asm_arm64.s

@@ -0,0 +1,36 @@
+// Copyright 2015 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 "textflag.h"
+#include "abi_arm64.h"
+
+// Called by C code generated by cmd/cgo.
+// func crosscall2(fn, a unsafe.Pointer, n int32, ctxt uintptr)
+// Saves C callee-saved registers and calls cgocallback with three arguments.
+// fn is the PC of a func(a unsafe.Pointer) function.
+TEXT crosscall2(SB), NOSPLIT|NOFRAME, $0
+/*
+ * We still need to save all callee save register as before, and then
+ *  push 3 args for fn (R0, R1, R3), skipping R2.
+ * Also note that at procedure entry in gc world, 8(RSP) will be the
+ *  first arg.
+ */
+	SUB  $(8*24), RSP
+	STP  (R0, R1), (8*1)(RSP)
+	MOVD R3, (8*3)(RSP)
+
+	SAVE_R19_TO_R28(8*4)
+	SAVE_F8_TO_F15(8*14)
+	STP (R29, R30), (8*22)(RSP)
+
+	// Initialize Go ABI environment
+	BL runtime·load_g(SB)
+	BL runtime·cgocallback(SB)
+
+	RESTORE_R19_TO_R28(8*4)
+	RESTORE_F8_TO_F15(8*14)
+	LDP (8*22)(RSP), (R29, R30)
+
+	ADD $(8*24), RSP
+	RET

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

@@ -0,0 +1,93 @@
+// 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 darwin || freebsd || linux
+
+package fakecgo
+
+import (
+	_ "unsafe"
+)
+
+// TODO: decide if we need _runtime_cgo_panic_internal
+
+//go:linkname x_cgo_init_trampoline x_cgo_init_trampoline
+//go:linkname _cgo_init _cgo_init
+var x_cgo_init_trampoline byte
+var _cgo_init = &x_cgo_init_trampoline
+
+// Creates a new system thread without updating any Go state.
+//
+// This method is invoked during shared library loading to create a new OS
+// thread to perform the runtime initialization. This method is similar to
+// _cgo_sys_thread_start except that it doesn't update any Go state.
+
+//go:linkname x_cgo_thread_start_trampoline x_cgo_thread_start_trampoline
+//go:linkname _cgo_thread_start _cgo_thread_start
+var x_cgo_thread_start_trampoline byte
+var _cgo_thread_start = &x_cgo_thread_start_trampoline
+
+// Notifies that the runtime has been initialized.
+//
+// We currently block at every CGO entry point (via _cgo_wait_runtime_init_done)
+// to ensure that the runtime has been initialized before the CGO call is
+// executed. This is necessary for shared libraries where we kickoff runtime
+// initialization in a separate thread and return without waiting for this
+// thread to complete the init.
+
+//go:linkname x_cgo_notify_runtime_init_done_trampoline x_cgo_notify_runtime_init_done_trampoline
+//go:linkname _cgo_notify_runtime_init_done _cgo_notify_runtime_init_done
+var x_cgo_notify_runtime_init_done_trampoline byte
+var _cgo_notify_runtime_init_done = &x_cgo_notify_runtime_init_done_trampoline
+
+// Indicates whether a dummy thread key has been created or not.
+//
+// When calling go exported function from C, we register a destructor
+// callback, for a dummy thread key, by using pthread_key_create.
+
+//go:linkname _cgo_pthread_key_created _cgo_pthread_key_created
+var x_cgo_pthread_key_created uintptr
+var _cgo_pthread_key_created = &x_cgo_pthread_key_created
+
+// Set the x_crosscall2_ptr C function pointer variable point to crosscall2.
+// It's for the runtime package to call at init time.
+func set_crosscall2() {
+	// nothing needs to be done here for fakecgo
+	// because it's possible to just call cgocallback directly
+}
+
+//go:linkname _set_crosscall2 runtime.set_crosscall2
+var _set_crosscall2 = set_crosscall2
+
+// Store the g into the thread-specific value.
+// So that pthread_key_destructor will dropm when the thread is exiting.
+
+//go:linkname x_cgo_bindm_trampoline x_cgo_bindm_trampoline
+//go:linkname _cgo_bindm _cgo_bindm
+var x_cgo_bindm_trampoline byte
+var _cgo_bindm = &x_cgo_bindm_trampoline
+
+// TODO: decide if we need x_cgo_set_context_function
+// TODO: decide if we need _cgo_yield
+
+var (
+	// In Go 1.20 the race detector was rewritten to pure Go
+	// on darwin. This means that when CGO_ENABLED=0 is set
+	// fakecgo is built with race detector code. This is not
+	// good since this code is pretending to be C. The go:norace
+	// pragma is not enough, since it only applies to the native
+	// ABIInternal function. The ABIO wrapper (which is necessary,
+	// since all references to text symbols from assembly will use it)
+	// does not inherit the go:norace pragma, so it will still be
+	// instrumented by the race detector.
+	//
+	// To circumvent this issue, using closure calls in the
+	// assembly, which forces the compiler to use the ABIInternal
+	// native implementation (which has go:norace) instead.
+	threadentry_call        = threadentry
+	x_cgo_init_call         = x_cgo_init
+	x_cgo_setenv_call       = x_cgo_setenv
+	x_cgo_unsetenv_call     = x_cgo_unsetenv
+	x_cgo_thread_start_call = x_cgo_thread_start
+)

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

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd
+
+// 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.
+//
+// # Goals
+//
+// fakecgo attempts to replicate the same naming structure as in the runtime.
+// For example, functions that have the prefix "gcc_*" are named "go_*".
+// This makes it easier to port other GOOSs and GOARCHs as well as to keep
+// it in sync with runtime/cgo.
+//
+// # Support
+//
+// Currently, fakecgo only supports macOS on amd64 & arm64. It also cannot
+// be used with -buildmode=c-archive because that requires special initialization
+// that fakecgo does not implement at the moment.
+//
+// # Usage
+//
+// Using fakecgo is easy just import _ "github.com/ebitengine/purego" and then
+// set the environment variable CGO_ENABLED=0.
+// The recommended usage for fakecgo is to prefer using runtime/cgo if possible
+// but if cross-compiling or fast build times are important fakecgo is available.
+// Purego will pick which ever Cgo runtime is available and prefer the one that
+// comes with Go (runtime/cgo).
+package fakecgo
+
+//go:generate go run gen.go
+//go:generate gofmt -s -w symbols.go

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

@@ -0,0 +1,27 @@
+// 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 freebsd && !cgo
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+// Supply environ and __progname, because we don't
+// link against the standard FreeBSD crt0.o and the
+// libc dynamic library needs them.
+
+// Note: when building with cross-compiling or CGO_ENABLED=0, add
+// the following argument to `go` so that these symbols are defined by
+// making fakecgo the Cgo.
+//   -gcflags="github.com/ebitengine/purego/internal/fakecgo=-std"
+
+//go:linkname _environ environ
+//go:linkname _progname __progname
+
+//go:cgo_export_dynamic environ
+//go:cgo_export_dynamic __progname
+
+var _environ uintptr
+var _progname uintptr

vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_amd64.go

@@ -0,0 +1,71 @@
+// 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.
+
+package fakecgo
+
+import "unsafe"
+
+//go:nosplit
+//go:norace
+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
+
+	sigfillset(&ign)
+	pthread_sigmask(SIG_SETMASK, &ign, &oset)
+
+	size = pthread_get_stacksize_np(pthread_self())
+	pthread_attr_init(&attr)
+	pthread_attr_setstacksize(&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
+//go:norace
+func threadentry(v unsafe.Pointer) unsafe.Pointer {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	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
+//go:norace
+func x_cgo_init(g *G, setg uintptr) {
+	var size size_t
+
+	setg_func = setg
+
+	size = pthread_get_stacksize_np(pthread_self())
+	g.stacklo = uintptr(unsafe.Add(unsafe.Pointer(&size), -size+4096))
+}

vendor/github.com/ebitengine/purego/internal/fakecgo/go_darwin_arm64.go

@@ -0,0 +1,86 @@
+// 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.
+
+package fakecgo
+
+import "unsafe"
+
+//go:nosplit
+//go:norace
+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
+
+	sigfillset(&ign)
+	pthread_sigmask(SIG_SETMASK, &ign, &oset)
+
+	size = pthread_get_stacksize_np(pthread_self())
+	pthread_attr_init(&attr)
+	pthread_attr_setstacksize(&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
+//go:norace
+func threadentry(v unsafe.Pointer) unsafe.Pointer {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	// TODO: support ios
+	//#if TARGET_OS_IPHONE
+	//	darwin_arm_init_thread_exception_port();
+	//#endif
+	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
+
+// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c)
+// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us
+// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup
+// This function can't be go:systemstack since go is not in a state where the systemcheck would work.
+//
+//go:nosplit
+//go:norace
+func x_cgo_init(g *G, setg uintptr) {
+	var size size_t
+
+	setg_func = setg
+	size = pthread_get_stacksize_np(pthread_self())
+	g.stacklo = uintptr(unsafe.Add(unsafe.Pointer(&size), -size+4096))
+
+	//TODO: support ios
+	//#if TARGET_OS_IPHONE
+	//	darwin_arm_init_mach_exception_handler();
+	//	darwin_arm_init_thread_exception_port();
+	//	init_working_dir();
+	//#endif
+}

vendor/github.com/ebitengine/purego/internal/fakecgo/go_freebsd_amd64.go

@@ -0,0 +1,93 @@
+// 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.
+
+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 {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	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_freebsd_arm64.go

@@ -0,0 +1,96 @@
+// 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.
+
+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 {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	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
+
+// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c)
+// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us
+// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup
+// This function can't be go:systemstack since go is not in a state where the systemcheck would work.
+//
+//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)
+	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_libinit.go

@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd || linux
+
+package fakecgo
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+var (
+	pthread_g pthread_key_t
+
+	runtime_init_cond = PTHREAD_COND_INITIALIZER
+	runtime_init_mu   = PTHREAD_MUTEX_INITIALIZER
+	runtime_init_done int
+)
+
+//go:nosplit
+func x_cgo_notify_runtime_init_done() {
+	pthread_mutex_lock(&runtime_init_mu)
+	runtime_init_done = 1
+	pthread_cond_broadcast(&runtime_init_cond)
+	pthread_mutex_unlock(&runtime_init_mu)
+}
+
+// Store the g into a thread-specific value associated with the pthread key pthread_g.
+// And pthread_key_destructor will dropm when the thread is exiting.
+func x_cgo_bindm(g unsafe.Pointer) {
+	// We assume this will always succeed, otherwise, there might be extra M leaking,
+	// when a C thread exits after a cgo call.
+	// We only invoke this function once per thread in runtime.needAndBindM,
+	// and the next calls just reuse the bound m.
+	pthread_setspecific(pthread_g, g)
+}
+
+// _cgo_try_pthread_create retries pthread_create if it fails with
+// EAGAIN.
+//
+//go:nosplit
+//go:norace
+func _cgo_try_pthread_create(thread *pthread_t, attr *pthread_attr_t, pfn unsafe.Pointer, arg *ThreadStart) int {
+	var ts syscall.Timespec
+	// tries needs to be the same type as syscall.Timespec.Nsec
+	// but the fields are int32 on 32bit and int64 on 64bit.
+	// tries is assigned to syscall.Timespec.Nsec in order to match its type.
+	tries := ts.Nsec
+	var err int
+
+	for tries = 0; tries < 20; tries++ {
+		err = int(pthread_create(thread, attr, pfn, unsafe.Pointer(arg)))
+		if err == 0 {
+			pthread_detach(*thread)
+			return 0
+		}
+		if err != int(syscall.EAGAIN) {
+			return err
+		}
+		ts.Sec = 0
+		ts.Nsec = (tries + 1) * 1000 * 1000 // Milliseconds.
+		nanosleep(&ts, nil)
+	}
+	return int(syscall.EAGAIN)
+}

vendor/github.com/ebitengine/purego/internal/fakecgo/go_linux_amd64.go

@@ -0,0 +1,93 @@
+// 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.
+
+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 {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	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_linux_arm64.go

@@ -0,0 +1,96 @@
+// 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.
+
+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 {
+	ts := *(*ThreadStart)(v)
+	free(v)
+
+	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
+
+// x_cgo_init(G *g, void (*setg)(void*)) (runtime/cgo/gcc_linux_amd64.c)
+// This get's called during startup, adjusts stacklo, and provides a pointer to setg_gcc for us
+// Additionally, if we set _cgo_init to non-null, go won't do it's own TLS setup
+// This function can't be go:systemstack since go is not in a state where the systemcheck would work.
+//
+//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)
+	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

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd || linux
+
+package fakecgo
+
+//go:nosplit
+//go:norace
+func x_cgo_setenv(arg *[2]*byte) {
+	setenv(arg[0], arg[1], 1)
+}
+
+//go:nosplit
+//go:norace
+func x_cgo_unsetenv(arg *[1]*byte) {
+	unsetenv(arg[0])
+}

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

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd || linux
+
+package fakecgo
+
+import "unsafe"
+
+// _cgo_thread_start is split into three parts in cgo since only one part is system dependent (keep it here for easier handling)
+
+// _cgo_thread_start(ThreadStart *arg) (runtime/cgo/gcc_util.c)
+// This get's called instead of the go code for creating new threads
+// -> pthread_* stuff is used, so threads are setup correctly for C
+// If this is missing, TLS is only setup correctly on thread 1!
+// This function should be go:systemstack instead of go:nosplit (but that requires runtime)
+//
+//go:nosplit
+//go:norace
+func x_cgo_thread_start(arg *ThreadStart) {
+	var ts *ThreadStart
+	// Make our own copy that can persist after we return.
+	//	_cgo_tsan_acquire();
+	ts = (*ThreadStart)(malloc(unsafe.Sizeof(*ts)))
+	//	_cgo_tsan_release();
+	if ts == nil {
+		println("fakecgo: out of memory in thread_start")
+		abort()
+	}
+	// *ts = *arg would cause a writebarrier so use memmove instead
+	memmove(unsafe.Pointer(ts), unsafe.Pointer(arg), unsafe.Sizeof(*ts))
+	_cgo_sys_thread_start(ts) // OS-dependent half
+}

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

@@ -0,0 +1,19 @@
+// 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 darwin || freebsd || linux
+
+// The runtime package contains an uninitialized definition
+// for runtime·iscgo. Override it to tell the runtime we're here.
+// There are various function pointers that should be set too,
+// but those depend on dynamic linker magic to get initialized
+// correctly, and sometimes they break. This variable is a
+// backup: it depends only on old C style static linking rules.
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+//go:linkname _iscgo runtime.iscgo
+var _iscgo bool = true

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

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd || linux
+
+package fakecgo
+
+type (
+	size_t         uintptr
+	sigset_t       [128]byte
+	pthread_attr_t [64]byte
+	pthread_t      int
+	pthread_key_t  uint64
+)
+
+// for pthread_sigmask:
+
+type sighow int32
+
+const (
+	SIG_BLOCK   sighow = 0
+	SIG_UNBLOCK sighow = 1
+	SIG_SETMASK sighow = 2
+)
+
+type G struct {
+	stacklo uintptr
+	stackhi uintptr
+}
+
+type ThreadStart struct {
+	g   *G
+	tls *uintptr
+	fn  uintptr
+}

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

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+package fakecgo
+
+type (
+	pthread_mutex_t struct {
+		sig    int64
+		opaque [56]byte
+	}
+	pthread_cond_t struct {
+		sig    int64
+		opaque [40]byte
+	}
+)
+
+var (
+	PTHREAD_COND_INITIALIZER  = pthread_cond_t{sig: 0x3CB0B1BB}
+	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{sig: 0x32AAABA7}
+)

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

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+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)
+)

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

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+package fakecgo
+
+type (
+	pthread_cond_t  [48]byte
+	pthread_mutex_t [48]byte
+)
+
+var (
+	PTHREAD_COND_INITIALIZER  = pthread_cond_t{}
+	PTHREAD_MUTEX_INITIALIZER = pthread_mutex_t{}
+)

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

@@ -0,0 +1,19 @@
+// 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 darwin || freebsd || linux
+
+package fakecgo
+
+import _ "unsafe" // for go:linkname
+
+//go:linkname x_cgo_setenv_trampoline x_cgo_setenv_trampoline
+//go:linkname _cgo_setenv runtime._cgo_setenv
+var x_cgo_setenv_trampoline byte
+var _cgo_setenv = &x_cgo_setenv_trampoline
+
+//go:linkname x_cgo_unsetenv_trampoline x_cgo_unsetenv_trampoline
+//go:linkname _cgo_unsetenv runtime._cgo_unsetenv
+var x_cgo_unsetenv_trampoline byte
+var _cgo_unsetenv = &x_cgo_unsetenv_trampoline

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

@@ -0,0 +1,184 @@
+// 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 darwin || freebsd || linux
+
+package fakecgo
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// setg_trampoline calls setg with the G provided
+func setg_trampoline(setg uintptr, G uintptr)
+
+//go:linkname memmove runtime.memmove
+func memmove(to, from unsafe.Pointer, n uintptr)
+
+// call5 takes fn the C function and 5 arguments and calls the function with those arguments
+func call5(fn, a1, a2, a3, a4, a5 uintptr) uintptr
+
+func malloc(size uintptr) unsafe.Pointer {
+	ret := call5(mallocABI0, uintptr(size), 0, 0, 0, 0)
+	// this indirection is to avoid go vet complaining about possible misuse of unsafe.Pointer
+	return *(*unsafe.Pointer)(unsafe.Pointer(&ret))
+}
+
+func free(ptr unsafe.Pointer) {
+	call5(freeABI0, uintptr(ptr), 0, 0, 0, 0)
+}
+
+func setenv(name *byte, value *byte, overwrite int32) int32 {
+	return int32(call5(setenvABI0, uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(value)), uintptr(overwrite), 0, 0))
+}
+
+func unsetenv(name *byte) int32 {
+	return int32(call5(unsetenvABI0, uintptr(unsafe.Pointer(name)), 0, 0, 0, 0))
+}
+
+func sigfillset(set *sigset_t) int32 {
+	return int32(call5(sigfillsetABI0, uintptr(unsafe.Pointer(set)), 0, 0, 0, 0))
+}
+
+func nanosleep(ts *syscall.Timespec, rem *syscall.Timespec) int32 {
+	return int32(call5(nanosleepABI0, uintptr(unsafe.Pointer(ts)), uintptr(unsafe.Pointer(rem)), 0, 0, 0))
+}
+
+func abort() {
+	call5(abortABI0, 0, 0, 0, 0, 0)
+}
+
+func pthread_attr_init(attr *pthread_attr_t) int32 {
+	return int32(call5(pthread_attr_initABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0))
+}
+
+func pthread_create(thread *pthread_t, attr *pthread_attr_t, start unsafe.Pointer, arg unsafe.Pointer) int32 {
+	return int32(call5(pthread_createABI0, uintptr(unsafe.Pointer(thread)), uintptr(unsafe.Pointer(attr)), uintptr(start), uintptr(arg), 0))
+}
+
+func pthread_detach(thread pthread_t) int32 {
+	return int32(call5(pthread_detachABI0, uintptr(thread), 0, 0, 0, 0))
+}
+
+func pthread_sigmask(how sighow, ign *sigset_t, oset *sigset_t) int32 {
+	return int32(call5(pthread_sigmaskABI0, uintptr(how), uintptr(unsafe.Pointer(ign)), uintptr(unsafe.Pointer(oset)), 0, 0))
+}
+
+func pthread_self() pthread_t {
+	return pthread_t(call5(pthread_selfABI0, 0, 0, 0, 0, 0))
+}
+
+func pthread_get_stacksize_np(thread pthread_t) size_t {
+	return size_t(call5(pthread_get_stacksize_npABI0, uintptr(thread), 0, 0, 0, 0))
+}
+
+func pthread_attr_getstacksize(attr *pthread_attr_t, stacksize *size_t) int32 {
+	return int32(call5(pthread_attr_getstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(unsafe.Pointer(stacksize)), 0, 0, 0))
+}
+
+func pthread_attr_setstacksize(attr *pthread_attr_t, size size_t) int32 {
+	return int32(call5(pthread_attr_setstacksizeABI0, uintptr(unsafe.Pointer(attr)), uintptr(size), 0, 0, 0))
+}
+
+func pthread_attr_destroy(attr *pthread_attr_t) int32 {
+	return int32(call5(pthread_attr_destroyABI0, uintptr(unsafe.Pointer(attr)), 0, 0, 0, 0))
+}
+
+func pthread_mutex_lock(mutex *pthread_mutex_t) int32 {
+	return int32(call5(pthread_mutex_lockABI0, uintptr(unsafe.Pointer(mutex)), 0, 0, 0, 0))
+}
+
+func pthread_mutex_unlock(mutex *pthread_mutex_t) int32 {
+	return int32(call5(pthread_mutex_unlockABI0, uintptr(unsafe.Pointer(mutex)), 0, 0, 0, 0))
+}
+
+func pthread_cond_broadcast(cond *pthread_cond_t) int32 {
+	return int32(call5(pthread_cond_broadcastABI0, uintptr(unsafe.Pointer(cond)), 0, 0, 0, 0))
+}
+
+func pthread_setspecific(key pthread_key_t, value unsafe.Pointer) int32 {
+	return int32(call5(pthread_setspecificABI0, uintptr(key), uintptr(value), 0, 0, 0))
+}
+
+//go:linkname _malloc _malloc
+var _malloc uintptr
+var mallocABI0 = uintptr(unsafe.Pointer(&_malloc))
+
+//go:linkname _free _free
+var _free uintptr
+var freeABI0 = uintptr(unsafe.Pointer(&_free))
+
+//go:linkname _setenv _setenv
+var _setenv uintptr
+var setenvABI0 = uintptr(unsafe.Pointer(&_setenv))
+
+//go:linkname _unsetenv _unsetenv
+var _unsetenv uintptr
+var unsetenvABI0 = uintptr(unsafe.Pointer(&_unsetenv))
+
+//go:linkname _sigfillset _sigfillset
+var _sigfillset uintptr
+var sigfillsetABI0 = uintptr(unsafe.Pointer(&_sigfillset))
+
+//go:linkname _nanosleep _nanosleep
+var _nanosleep uintptr
+var nanosleepABI0 = uintptr(unsafe.Pointer(&_nanosleep))
+
+//go:linkname _abort _abort
+var _abort uintptr
+var abortABI0 = uintptr(unsafe.Pointer(&_abort))
+
+//go:linkname _pthread_attr_init _pthread_attr_init
+var _pthread_attr_init uintptr
+var pthread_attr_initABI0 = uintptr(unsafe.Pointer(&_pthread_attr_init))
+
+//go:linkname _pthread_create _pthread_create
+var _pthread_create uintptr
+var pthread_createABI0 = uintptr(unsafe.Pointer(&_pthread_create))
+
+//go:linkname _pthread_detach _pthread_detach
+var _pthread_detach uintptr
+var pthread_detachABI0 = uintptr(unsafe.Pointer(&_pthread_detach))
+
+//go:linkname _pthread_sigmask _pthread_sigmask
+var _pthread_sigmask uintptr
+var pthread_sigmaskABI0 = uintptr(unsafe.Pointer(&_pthread_sigmask))
+
+//go:linkname _pthread_self _pthread_self
+var _pthread_self uintptr
+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_npABI0 = uintptr(unsafe.Pointer(&_pthread_get_stacksize_np))
+
+//go:linkname _pthread_attr_getstacksize _pthread_attr_getstacksize
+var _pthread_attr_getstacksize uintptr
+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_setstacksizeABI0 = uintptr(unsafe.Pointer(&_pthread_attr_setstacksize))
+
+//go:linkname _pthread_attr_destroy _pthread_attr_destroy
+var _pthread_attr_destroy uintptr
+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_lockABI0 = uintptr(unsafe.Pointer(&_pthread_mutex_lock))
+
+//go:linkname _pthread_mutex_unlock _pthread_mutex_unlock
+var _pthread_mutex_unlock uintptr
+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_broadcastABI0 = uintptr(unsafe.Pointer(&_pthread_cond_broadcast))
+
+//go:linkname _pthread_setspecific _pthread_setspecific
+var _pthread_setspecific uintptr
+var pthread_setspecificABI0 = uintptr(unsafe.Pointer(&_pthread_setspecific))

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

@@ -0,0 +1,27 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+package fakecgo
+
+//go:cgo_import_dynamic purego_malloc malloc "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_free free "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_setenv setenv "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "/usr/lib/libSystem.B.dylib"
+//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_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"
+//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_self pthread_self "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_get_stacksize_np pthread_get_stacksize_np "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_attr_setstacksize pthread_attr_setstacksize "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "/usr/lib/libSystem.B.dylib"
+//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "/usr/lib/libSystem.B.dylib"

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

@@ -0,0 +1,27 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+package fakecgo
+
+//go:cgo_import_dynamic purego_malloc malloc "libc.so.7"
+//go:cgo_import_dynamic purego_free free "libc.so.7"
+//go:cgo_import_dynamic purego_setenv setenv "libc.so.7"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so.7"
+//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_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/symbols_linux.go

@@ -0,0 +1,27 @@
+// Code generated by 'go generate' with gen.go. DO NOT EDIT.
+
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+package fakecgo
+
+//go:cgo_import_dynamic purego_malloc malloc "libc.so.6"
+//go:cgo_import_dynamic purego_free free "libc.so.6"
+//go:cgo_import_dynamic purego_setenv setenv "libc.so.6"
+//go:cgo_import_dynamic purego_unsetenv unsetenv "libc.so.6"
+//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_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"
+//go:cgo_import_dynamic purego_pthread_sigmask pthread_sigmask "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_self pthread_self "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_get_stacksize_np pthread_get_stacksize_np "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_attr_getstacksize pthread_attr_getstacksize "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_attr_setstacksize pthread_attr_setstacksize "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_attr_destroy pthread_attr_destroy "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_mutex_lock pthread_mutex_lock "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_mutex_unlock pthread_mutex_unlock "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_cond_broadcast pthread_cond_broadcast "libpthread.so.0"
+//go:cgo_import_dynamic purego_pthread_setspecific pthread_setspecific "libpthread.so.0"

vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_amd64.s

@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || linux || freebsd
+
+/*
+trampoline for emulating required C functions for cgo in go (see cgo.go)
+(we convert cdecl calling convention to go and vice-versa)
+
+Since we're called from go and call into C we can cheat a bit with the calling conventions:
+ - in go all the registers are caller saved
+ - in C we have a couple of callee saved registers
+
+=> we can use BX, R12, R13, R14, R15 instead of the stack
+
+C Calling convention cdecl used here (we only need integer args):
+1. arg: DI
+2. arg: SI
+3. arg: DX
+4. arg: CX
+5. arg: R8
+6. arg: R9
+We don't need floats with these functions -> AX=0
+return value will be in AX
+*/
+#include "textflag.h"
+#include "go_asm.h"
+
+// these trampolines map the gcc ABI to Go ABI and then calls into the Go equivalent functions.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $16
+	MOVQ DI, AX
+	MOVQ SI, BX
+	MOVQ ·x_cgo_init_call(SB), DX
+	MOVQ (DX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $8
+	MOVQ DI, AX
+	MOVQ ·x_cgo_thread_start_call(SB), DX
+	MOVQ (DX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $8
+	MOVQ DI, AX
+	MOVQ ·x_cgo_setenv_call(SB), DX
+	MOVQ (DX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $8
+	MOVQ DI, AX
+	MOVQ ·x_cgo_unsetenv_call(SB), DX
+	MOVQ (DX), CX
+	CALL CX
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_bindm(SB)
+	RET
+
+// func setg_trampoline(setg uintptr, g uintptr)
+TEXT ·setg_trampoline(SB), NOSPLIT, $0-16
+	MOVQ G+8(FP), DI
+	MOVQ setg+0(FP), BX
+	XORL AX, AX
+	CALL BX
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $16
+	MOVQ DI, AX
+	MOVQ ·threadentry_call(SB), DX
+	MOVQ (DX), CX
+	CALL CX
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $0-56
+	MOVQ fn+0(FP), BX
+	MOVQ a1+8(FP), DI
+	MOVQ a2+16(FP), SI
+	MOVQ a3+24(FP), DX
+	MOVQ a4+32(FP), CX
+	MOVQ a5+40(FP), R8
+
+	XORL AX, AX // no floats
+
+	PUSHQ BP       // save BP
+	MOVQ  SP, BP   // save SP inside BP bc BP is callee-saved
+	SUBQ  $16, SP  // allocate space for alignment
+	ANDQ  $-16, SP // align on 16 bytes for SSE
+
+	CALL BX
+
+	MOVQ BP, SP // get SP back
+	POPQ BP     // restore BP
+
+	MOVQ AX, ret+48(FP)
+	RET

vendor/github.com/ebitengine/purego/internal/fakecgo/trampolines_arm64.s

@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: 2022 The Ebitengine Authors
+
+//go:build darwin || freebsd || linux
+
+#include "textflag.h"
+#include "go_asm.h"
+
+// these trampolines map the gcc ABI to Go ABI and then calls into the Go equivalent functions.
+
+TEXT x_cgo_init_trampoline(SB), NOSPLIT, $0-0
+	MOVD R0, 8(RSP)
+	MOVD R1, 16(RSP)
+	MOVD ·x_cgo_init_call(SB), R26
+	MOVD (R26), R2
+	CALL (R2)
+	RET
+
+TEXT x_cgo_thread_start_trampoline(SB), NOSPLIT, $0-0
+	MOVD R0, 8(RSP)
+	MOVD ·x_cgo_thread_start_call(SB), R26
+	MOVD (R26), R2
+	CALL (R2)
+	RET
+
+TEXT x_cgo_setenv_trampoline(SB), NOSPLIT, $0-0
+	MOVD R0, 8(RSP)
+	MOVD ·x_cgo_setenv_call(SB), R26
+	MOVD (R26), R2
+	CALL (R2)
+	RET
+
+TEXT x_cgo_unsetenv_trampoline(SB), NOSPLIT, $0-0
+	MOVD R0, 8(RSP)
+	MOVD ·x_cgo_unsetenv_call(SB), R26
+	MOVD (R26), R2
+	CALL (R2)
+	RET
+
+TEXT x_cgo_notify_runtime_init_done_trampoline(SB), NOSPLIT, $0-0
+	CALL ·x_cgo_notify_runtime_init_done(SB)
+	RET
+
+TEXT x_cgo_bindm_trampoline(SB), NOSPLIT, $0
+	CALL ·x_cgo_bindm(SB)
+	RET
+
+// func setg_trampoline(setg uintptr, g uintptr)
+TEXT ·setg_trampoline(SB), NOSPLIT, $0-16
+	MOVD G+8(FP), R0
+	MOVD setg+0(FP), R1
+	CALL R1
+	RET
+
+TEXT threadentry_trampoline(SB), NOSPLIT, $0-0
+	MOVD R0, 8(RSP)
+	MOVD ·threadentry_call(SB), R26
+	MOVD (R26), R2
+	CALL (R2)
+	MOVD $0, R0                     // TODO: get the return value from threadentry
+	RET
+
+TEXT ·call5(SB), NOSPLIT, $0-0
+	MOVD fn+0(FP), R6
+	MOVD a1+8(FP), R0
+	MOVD a2+16(FP), R1
+	MOVD a3+24(FP), R2
+	MOVD a4+32(FP), R3
+	MOVD a5+40(FP), R4
+	CALL R6
+	MOVD R0, ret+48(FP)
+	RET

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

@@ -0,0 +1,90 @@
+// 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 darwin || freebsd || linux
+
+#include "textflag.h"
+
+// these stubs are here because it is not possible to go:linkname directly the C functions on darwin arm64
+
+TEXT _malloc(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_malloc(SB)
+	RET
+
+TEXT _free(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_free(SB)
+	RET
+
+TEXT _setenv(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_setenv(SB)
+	RET
+
+TEXT _unsetenv(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_unsetenv(SB)
+	RET
+
+TEXT _sigfillset(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_sigfillset(SB)
+	RET
+
+TEXT _nanosleep(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_nanosleep(SB)
+	RET
+
+TEXT _abort(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_abort(SB)
+	RET
+
+TEXT _pthread_attr_init(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_init(SB)
+	RET
+
+TEXT _pthread_create(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_create(SB)
+	RET
+
+TEXT _pthread_detach(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_detach(SB)
+	RET
+
+TEXT _pthread_sigmask(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_sigmask(SB)
+	RET
+
+TEXT _pthread_self(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_self(SB)
+	RET
+
+TEXT _pthread_get_stacksize_np(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_get_stacksize_np(SB)
+	RET
+
+TEXT _pthread_attr_getstacksize(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_getstacksize(SB)
+	RET
+
+TEXT _pthread_attr_setstacksize(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_setstacksize(SB)
+	RET
+
+TEXT _pthread_attr_destroy(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_attr_destroy(SB)
+	RET
+
+TEXT _pthread_mutex_lock(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_mutex_lock(SB)
+	RET
+
+TEXT _pthread_mutex_unlock(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_mutex_unlock(SB)
+	RET
+
+TEXT _pthread_cond_broadcast(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_cond_broadcast(SB)
+	RET
+
+TEXT _pthread_setspecific(SB), NOSPLIT|NOFRAME, $0-0
+	JMP purego_pthread_setspecific(SB)
+	RET