diff --git a/src/cmd/compile/internal/ssagen/abi.go b/src/cmd/compile/internal/ssagen/abi.go
index a6e1b1812f..c97d60b996 100644
--- a/src/cmd/compile/internal/ssagen/abi.go
+++ b/src/cmd/compile/internal/ssagen/abi.go
@@ -366,23 +366,48 @@ func CreateWasmImportWrapper(fn *ir.Func) bool {
 	return true
 }
 
-func toWasmFields(result *abi.ABIParamResultInfo, abiParams []abi.ABIParamAssignment) []obj.WasmField {
+func paramsToWasmFields(f *ir.Func, result *abi.ABIParamResultInfo, abiParams []abi.ABIParamAssignment) []obj.WasmField {
 	wfs := make([]obj.WasmField, len(abiParams))
 	for i, p := range abiParams {
 		t := p.Type
-		switch {
-		case t.IsInteger() && t.Size() == 4:
+		switch t.Kind() {
+		case types.TINT32, types.TUINT32:
 			wfs[i].Type = obj.WasmI32
-		case t.IsInteger() && t.Size() == 8:
+		case types.TINT64, types.TUINT64:
 			wfs[i].Type = obj.WasmI64
-		case t.IsFloat() && t.Size() == 4:
+		case types.TFLOAT32:
 			wfs[i].Type = obj.WasmF32
-		case t.IsFloat() && t.Size() == 8:
+		case types.TFLOAT64:
 			wfs[i].Type = obj.WasmF64
-		case t.IsPtr():
+		case types.TUNSAFEPTR:
 			wfs[i].Type = obj.WasmPtr
 		default:
-			base.Fatalf("wasm import has bad function signature")
+			base.ErrorfAt(f.Pos(), 0, "go:wasmimport %s %s: unsupported parameter type %s", f.WasmImport.Module, f.WasmImport.Name, t.String())
+		}
+		wfs[i].Offset = p.FrameOffset(result)
+	}
+	return wfs
+}
+
+func resultsToWasmFields(f *ir.Func, result *abi.ABIParamResultInfo, abiParams []abi.ABIParamAssignment) []obj.WasmField {
+	if len(abiParams) > 1 {
+		base.ErrorfAt(f.Pos(), 0, "go:wasmimport %s %s: too many return values", f.WasmImport.Module, f.WasmImport.Name)
+		return nil
+	}
+	wfs := make([]obj.WasmField, len(abiParams))
+	for i, p := range abiParams {
+		t := p.Type
+		switch t.Kind() {
+		case types.TINT32, types.TUINT32:
+			wfs[i].Type = obj.WasmI32
+		case types.TINT64, types.TUINT64:
+			wfs[i].Type = obj.WasmI64
+		case types.TFLOAT32:
+			wfs[i].Type = obj.WasmF32
+		case types.TFLOAT64:
+			wfs[i].Type = obj.WasmF64
+		default:
+			base.ErrorfAt(f.Pos(), 0, "go:wasmimport %s %s: unsupported result type %s", f.WasmImport.Module, f.WasmImport.Name, t.String())
 		}
 		wfs[i].Offset = p.FrameOffset(result)
 	}
@@ -419,8 +444,8 @@ func setupWasmABI(f *ir.Func) {
 		// 	(import "a_module" "add" (func (param i32 i32) (result i32)))
 		abiConfig := AbiForBodylessFuncStackMap(f)
 		abiInfo := abiConfig.ABIAnalyzeFuncType(f.Type().FuncType())
-		wi.Params = toWasmFields(abiInfo, abiInfo.InParams())
-		wi.Results = toWasmFields(abiInfo, abiInfo.OutParams())
+		wi.Params = paramsToWasmFields(f, abiInfo, abiInfo.InParams())
+		wi.Results = resultsToWasmFields(f, abiInfo, abiInfo.OutParams())
 	}
 	f.LSym.Func().WasmImport = &wi
 }
diff --git a/src/runtime/os_wasip1.go b/src/runtime/os_wasip1.go
index cd02a18dfe..577d9652dd 100644
--- a/src/runtime/os_wasip1.go
+++ b/src/runtime/os_wasip1.go
@@ -48,31 +48,31 @@ func exit(code int32)
 
 //go:wasmimport wasi_snapshot_preview1 args_get
 //go:noescape
-func args_get(argv *uintptr32, argvBuf *byte) errno
+func args_get(argv, argvBuf unsafe.Pointer) errno
 
 //go:wasmimport wasi_snapshot_preview1 args_sizes_get
 //go:noescape
-func args_sizes_get(argc *size, argvBufLen *size) errno
+func args_sizes_get(argc, argvBufLen unsafe.Pointer) errno
 
 //go:wasmimport wasi_snapshot_preview1 clock_time_get
 //go:noescape
-func clock_time_get(clock_id clockid, precision timestamp, time *timestamp) errno
+func clock_time_get(clock_id clockid, precision timestamp, time unsafe.Pointer) errno
 
 //go:wasmimport wasi_snapshot_preview1 environ_get
 //go:noescape
-func environ_get(environ *uintptr32, environBuf *byte) errno
+func environ_get(environ, environBuf unsafe.Pointer) errno
 
 //go:wasmimport wasi_snapshot_preview1 environ_sizes_get
 //go:noescape
-func environ_sizes_get(environCount *size, environBufLen *size) errno
+func environ_sizes_get(environCount, environBufLen unsafe.Pointer) errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_write
 //go:noescape
-func fd_write(fd int32, iovs *iovec, iovsLen size, nwritten *size) errno
+func fd_write(fd int32, iovs unsafe.Pointer, iovsLen size, nwritten unsafe.Pointer) errno
 
 //go:wasmimport wasi_snapshot_preview1 random_get
 //go:noescape
-func random_get(buf *byte, bufLen size) errno
+func random_get(buf unsafe.Pointer, bufLen size) errno
 
 type eventtype = uint8
 
@@ -140,7 +140,7 @@ func (u *subscriptionUnion) subscriptionClock() *subscriptionClock {
 
 //go:wasmimport wasi_snapshot_preview1 poll_oneoff
 //go:noescape
-func poll_oneoff(in *subscription, out *event, nsubscriptions size, nevents *size) errno
+func poll_oneoff(in, out unsafe.Pointer, nsubscriptions size, nevents unsafe.Pointer) errno
 
 func write1(fd uintptr, p unsafe.Pointer, n int32) int32 {
 	iov := iovec{
@@ -148,7 +148,7 @@ func write1(fd uintptr, p unsafe.Pointer, n int32) int32 {
 		bufLen: size(n),
 	}
 	var nwritten size
-	if fd_write(int32(fd), &iov, 1, &nwritten) != 0 {
+	if fd_write(int32(fd), unsafe.Pointer(&iov), 1, unsafe.Pointer(&nwritten)) != 0 {
 		throw("fd_write failed")
 	}
 	return int32(nwritten)
@@ -167,13 +167,13 @@ func usleep(usec uint32) {
 	subscription.timeout = timestamp(usec) * 1e3
 	subscription.precision = 1e3
 
-	if poll_oneoff(&in, &out, 1, &nevents) != 0 {
+	if poll_oneoff(unsafe.Pointer(&in), unsafe.Pointer(&out), 1, unsafe.Pointer(&nevents)) != 0 {
 		throw("wasi_snapshot_preview1.poll_oneoff")
 	}
 }
 
 func getRandomData(r []byte) {
-	if random_get(&r[0], size(len(r))) != 0 {
+	if random_get(unsafe.Pointer(&r[0]), size(len(r))) != 0 {
 		throw("random_get failed")
 	}
 }
@@ -182,7 +182,7 @@ func goenvs() {
 	// arguments
 	var argc size
 	var argvBufLen size
-	if args_sizes_get(&argc, &argvBufLen) != 0 {
+	if args_sizes_get(unsafe.Pointer(&argc), unsafe.Pointer(&argvBufLen)) != 0 {
 		throw("args_sizes_get failed")
 	}
 
@@ -190,7 +190,7 @@ func goenvs() {
 	if argc > 0 {
 		argv := make([]uintptr32, argc)
 		argvBuf := make([]byte, argvBufLen)
-		if args_get(&argv[0], &argvBuf[0]) != 0 {
+		if args_get(unsafe.Pointer(&argv[0]), unsafe.Pointer(&argvBuf[0])) != 0 {
 			throw("args_get failed")
 		}
 
@@ -207,7 +207,7 @@ func goenvs() {
 	// environment
 	var environCount size
 	var environBufLen size
-	if environ_sizes_get(&environCount, &environBufLen) != 0 {
+	if environ_sizes_get(unsafe.Pointer(&environCount), unsafe.Pointer(&environBufLen)) != 0 {
 		throw("environ_sizes_get failed")
 	}
 
@@ -215,7 +215,7 @@ func goenvs() {
 	if environCount > 0 {
 		environ := make([]uintptr32, environCount)
 		environBuf := make([]byte, environBufLen)
-		if environ_get(&environ[0], &environBuf[0]) != 0 {
+		if environ_get(unsafe.Pointer(&environ[0]), unsafe.Pointer(&environBuf[0])) != 0 {
 			throw("environ_get failed")
 		}
 
@@ -236,7 +236,7 @@ func walltime() (sec int64, nsec int32) {
 
 func walltime1() (sec int64, nsec int32) {
 	var time timestamp
-	if clock_time_get(clockRealtime, 0, &time) != 0 {
+	if clock_time_get(clockRealtime, 0, unsafe.Pointer(&time)) != 0 {
 		throw("clock_time_get failed")
 	}
 	return int64(time / 1000000000), int32(time % 1000000000)
@@ -244,7 +244,7 @@ func walltime1() (sec int64, nsec int32) {
 
 func nanotime1() int64 {
 	var time timestamp
-	if clock_time_get(clockMonotonic, 0, &time) != 0 {
+	if clock_time_get(clockMonotonic, 0, unsafe.Pointer(&time)) != 0 {
 		throw("clock_time_get failed")
 	}
 	return int64(time)
diff --git a/src/syscall/fs_wasip1.go b/src/syscall/fs_wasip1.go
index d2265eb3ee..b331629d79 100644
--- a/src/syscall/fs_wasip1.go
+++ b/src/syscall/fs_wasip1.go
@@ -118,23 +118,23 @@ func fd_filestat_set_size(fd int32, set_size filesize) Errno
 //
 //go:wasmimport wasi_snapshot_preview1 fd_pread
 //go:noescape
-func fd_pread(fd int32, iovs *iovec, iovsLen size, offset filesize, nread *size) Errno
+func fd_pread(fd int32, iovs unsafe.Pointer, iovsLen size, offset filesize, nread unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_pwrite
 //go:noescape
-func fd_pwrite(fd int32, iovs *iovec, iovsLen size, offset filesize, nwritten *size) Errno
+func fd_pwrite(fd int32, iovs unsafe.Pointer, iovsLen size, offset filesize, nwritten unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_read
 //go:noescape
-func fd_read(fd int32, iovs *iovec, iovsLen size, nread *size) Errno
+func fd_read(fd int32, iovs unsafe.Pointer, iovsLen size, nread unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_readdir
 //go:noescape
-func fd_readdir(fd int32, buf *byte, bufLen size, cookie dircookie, nwritten *size) Errno
+func fd_readdir(fd int32, buf unsafe.Pointer, bufLen size, cookie dircookie, nwritten unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_seek
 //go:noescape
-func fd_seek(fd int32, offset filedelta, whence uint32, newoffset *filesize) Errno
+func fd_seek(fd int32, offset filedelta, whence uint32, newoffset unsafe.Pointer) Errno
 
 // https://github.com/WebAssembly/WASI/blob/a2b96e81c0586125cc4dc79a5be0b78d9a059925/legacy/preview1/docs.md#-fd_fdstat_set_rightsfd-fd-fs_rights_base-rights-fs_rights_inheriting-rights---result-errno
 //
@@ -144,11 +144,11 @@ func fd_fdstat_set_rights(fd int32, rightsBase rights, rightsInheriting rights)
 
 //go:wasmimport wasi_snapshot_preview1 fd_filestat_get
 //go:noescape
-func fd_filestat_get(fd int32, buf *Stat_t) Errno
+func fd_filestat_get(fd int32, buf unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_write
 //go:noescape
-func fd_write(fd int32, iovs *iovec, iovsLen size, nwritten *size) Errno
+func fd_write(fd int32, iovs unsafe.Pointer, iovsLen size, nwritten unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_sync
 //go:noescape
@@ -156,47 +156,47 @@ func fd_sync(fd int32) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_create_directory
 //go:noescape
-func path_create_directory(fd int32, path *byte, pathLen size) Errno
+func path_create_directory(fd int32, path unsafe.Pointer, pathLen size) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_filestat_get
 //go:noescape
-func path_filestat_get(fd int32, flags lookupflags, path *byte, pathLen size, buf *Stat_t) Errno
+func path_filestat_get(fd int32, flags lookupflags, path unsafe.Pointer, pathLen size, buf unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_filestat_set_times
 //go:noescape
-func path_filestat_set_times(fd int32, flags lookupflags, path *byte, pathLen size, atim timestamp, mtim timestamp, fstflags fstflags) Errno
+func path_filestat_set_times(fd int32, flags lookupflags, path unsafe.Pointer, pathLen size, atim timestamp, mtim timestamp, fstflags fstflags) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_link
 //go:noescape
-func path_link(oldFd int32, oldFlags lookupflags, oldPath *byte, oldPathLen size, newFd int32, newPath *byte, newPathLen size) Errno
+func path_link(oldFd int32, oldFlags lookupflags, oldPath unsafe.Pointer, oldPathLen size, newFd int32, newPath unsafe.Pointer, newPathLen size) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_readlink
 //go:noescape
-func path_readlink(fd int32, path *byte, pathLen size, buf *byte, bufLen size, nwritten *size) Errno
+func path_readlink(fd int32, path unsafe.Pointer, pathLen size, buf unsafe.Pointer, bufLen size, nwritten unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_remove_directory
 //go:noescape
-func path_remove_directory(fd int32, path *byte, pathLen size) Errno
+func path_remove_directory(fd int32, path unsafe.Pointer, pathLen size) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_rename
 //go:noescape
-func path_rename(oldFd int32, oldPath *byte, oldPathLen size, newFd int32, newPath *byte, newPathLen size) Errno
+func path_rename(oldFd int32, oldPath unsafe.Pointer, oldPathLen size, newFd int32, newPath unsafe.Pointer, newPathLen size) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_symlink
 //go:noescape
-func path_symlink(oldPath *byte, oldPathLen size, fd int32, newPath *byte, newPathLen size) Errno
+func path_symlink(oldPath unsafe.Pointer, oldPathLen size, fd int32, newPath unsafe.Pointer, newPathLen size) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_unlink_file
 //go:noescape
-func path_unlink_file(fd int32, path *byte, pathLen size) Errno
+func path_unlink_file(fd int32, path unsafe.Pointer, pathLen size) Errno
 
 //go:wasmimport wasi_snapshot_preview1 path_open
 //go:noescape
-func path_open(rootFD int32, dirflags lookupflags, path *byte, pathLen size, oflags oflags, fsRightsBase rights, fsRightsInheriting rights, fsFlags fdflags, fd *int32) Errno
+func path_open(rootFD int32, dirflags lookupflags, path unsafe.Pointer, pathLen size, oflags oflags, fsRightsBase rights, fsRightsInheriting rights, fsFlags fdflags, fd unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 random_get
 //go:noescape
-func random_get(buf *byte, bufLen size) Errno
+func random_get(buf unsafe.Pointer, bufLen size) Errno
 
 type preopentype = uint8
 
@@ -215,11 +215,11 @@ type prestat struct {
 
 //go:wasmimport wasi_snapshot_preview1 fd_prestat_get
 //go:noescape
-func fd_prestat_get(fd int32, prestat *prestat) Errno
+func fd_prestat_get(fd int32, prestat unsafe.Pointer) Errno
 
 //go:wasmimport wasi_snapshot_preview1 fd_prestat_dir_name
 //go:noescape
-func fd_prestat_dir_name(fd int32, path *byte, pathLen size) Errno
+func fd_prestat_dir_name(fd int32, path unsafe.Pointer, pathLen size) Errno
 
 type opendir struct {
 	fd   int32
@@ -246,7 +246,7 @@ func init() {
 	for preopenFd := int32(3); ; preopenFd++ {
 		var prestat prestat
 
-		errno := fd_prestat_get(preopenFd, &prestat)
+		errno := fd_prestat_get(preopenFd, unsafe.Pointer(&prestat))
 		if errno == EBADF {
 			break
 		}
@@ -260,7 +260,7 @@ func init() {
 			dirNameBuf = make([]byte, prestat.dir.prNameLen)
 		}
 
-		errno = fd_prestat_dir_name(preopenFd, &dirNameBuf[0], prestat.dir.prNameLen)
+		errno = fd_prestat_dir_name(preopenFd, unsafe.Pointer(&dirNameBuf[0]), prestat.dir.prNameLen)
 		if errno != 0 {
 			panic("fd_prestat_dir_name: " + errno.Error())
 		}
@@ -388,7 +388,7 @@ func hasSuffix(s, x string) bool {
 //
 // If the path argument is not absolute, it is first appended to the current
 // working directory before resolution.
-func preparePath(path string) (int32, *byte, size) {
+func preparePath(path string) (int32, unsafe.Pointer, size) {
 	var dirFd = int32(-1)
 	var dirName string
 
@@ -412,7 +412,7 @@ func preparePath(path string) (int32, *byte, size) {
 		path = "."
 	}
 
-	return dirFd, unsafe.StringData(path), size(len(path))
+	return dirFd, stringPointer(path), size(len(path))
 }
 
 func Open(path string, openmode int, perm uint32) (int, error) {
@@ -439,7 +439,7 @@ func Open(path string, openmode int, perm uint32) (int, error) {
 		LOOKUP_SYMLINK_FOLLOW,
 		pathPtr,
 		pathLen,
-		&fi,
+		unsafe.Pointer(&fi),
 	); errno != 0 && errno != ENOENT {
 		return -1, errnoErr(errno)
 	}
@@ -483,7 +483,7 @@ func Open(path string, openmode int, perm uint32) (int, error) {
 		rights,
 		fullRights,
 		fdflags,
-		&fd,
+		unsafe.Pointer(&fd),
 	)
 	return int(fd), errnoErr(errno)
 }
@@ -508,7 +508,7 @@ func Mkdir(path string, perm uint32) error {
 
 func ReadDir(fd int, buf []byte, cookie dircookie) (int, error) {
 	var nwritten size
-	errno := fd_readdir(int32(fd), &buf[0], size(len(buf)), cookie, &nwritten)
+	errno := fd_readdir(int32(fd), unsafe.Pointer(&buf[0]), size(len(buf)), cookie, unsafe.Pointer(&nwritten))
 	return int(nwritten), errnoErr(errno)
 }
 
@@ -534,7 +534,7 @@ func Stat(path string, st *Stat_t) error {
 		return EINVAL
 	}
 	dirFd, pathPtr, pathLen := preparePath(path)
-	errno := path_filestat_get(dirFd, LOOKUP_SYMLINK_FOLLOW, pathPtr, pathLen, st)
+	errno := path_filestat_get(dirFd, LOOKUP_SYMLINK_FOLLOW, pathPtr, pathLen, unsafe.Pointer(st))
 	setDefaultMode(st)
 	return errnoErr(errno)
 }
@@ -544,13 +544,13 @@ func Lstat(path string, st *Stat_t) error {
 		return EINVAL
 	}
 	dirFd, pathPtr, pathLen := preparePath(path)
-	errno := path_filestat_get(dirFd, 0, pathPtr, pathLen, st)
+	errno := path_filestat_get(dirFd, 0, pathPtr, pathLen, unsafe.Pointer(st))
 	setDefaultMode(st)
 	return errnoErr(errno)
 }
 
 func Fstat(fd int, st *Stat_t) error {
-	errno := fd_filestat_get(int32(fd), st)
+	errno := fd_filestat_get(int32(fd), unsafe.Pointer(st))
 	setDefaultMode(st)
 	return errnoErr(errno)
 }
@@ -676,7 +676,7 @@ func Chdir(path string) error {
 
 	var stat Stat_t
 	dirFd, pathPtr, pathLen := preparePath(path)
-	errno := path_filestat_get(dirFd, LOOKUP_SYMLINK_FOLLOW, pathPtr, pathLen, &stat)
+	errno := path_filestat_get(dirFd, LOOKUP_SYMLINK_FOLLOW, pathPtr, pathLen, unsafe.Pointer(&stat))
 	if errno != 0 {
 		return errnoErr(errno)
 	}
@@ -700,9 +700,9 @@ func Readlink(path string, buf []byte) (n int, err error) {
 		dirFd,
 		pathPtr,
 		pathLen,
-		&buf[0],
+		unsafe.Pointer(&buf[0]),
 		size(len(buf)),
-		&nwritten,
+		unsafe.Pointer(&nwritten),
 	)
 	// For some reason wasmtime returns ERANGE when the output buffer is
 	// shorter than the symbolic link value. os.Readlink expects a nil
@@ -736,7 +736,7 @@ func Symlink(path, link string) error {
 	}
 	dirFd, pathPtr, pathlen := preparePath(link)
 	errno := path_symlink(
-		unsafe.StringData(path),
+		stringPointer(path),
 		size(len(path)),
 		dirFd,
 		pathPtr,
@@ -750,44 +750,52 @@ func Fsync(fd int) error {
 	return errnoErr(errno)
 }
 
-func makeIOVec(b []byte) *iovec {
-	return &iovec{
-		buf:    uintptr32(uintptr(unsafe.Pointer(unsafe.SliceData(b)))),
+func bytesPointer(b []byte) unsafe.Pointer {
+	return unsafe.Pointer(unsafe.SliceData(b))
+}
+
+func stringPointer(s string) unsafe.Pointer {
+	return unsafe.Pointer(unsafe.StringData(s))
+}
+
+func makeIOVec(b []byte) unsafe.Pointer {
+	return unsafe.Pointer(&iovec{
+		buf:    uintptr32(uintptr(bytesPointer(b))),
 		bufLen: size(len(b)),
-	}
+	})
 }
 
 func Read(fd int, b []byte) (int, error) {
 	var nread size
-	errno := fd_read(int32(fd), makeIOVec(b), 1, &nread)
+	errno := fd_read(int32(fd), makeIOVec(b), 1, unsafe.Pointer(&nread))
 	runtime.KeepAlive(b)
 	return int(nread), errnoErr(errno)
 }
 
 func Write(fd int, b []byte) (int, error) {
 	var nwritten size
-	errno := fd_write(int32(fd), makeIOVec(b), 1, &nwritten)
+	errno := fd_write(int32(fd), makeIOVec(b), 1, unsafe.Pointer(&nwritten))
 	runtime.KeepAlive(b)
 	return int(nwritten), errnoErr(errno)
 }
 
 func Pread(fd int, b []byte, offset int64) (int, error) {
 	var nread size
-	errno := fd_pread(int32(fd), makeIOVec(b), 1, filesize(offset), &nread)
+	errno := fd_pread(int32(fd), makeIOVec(b), 1, filesize(offset), unsafe.Pointer(&nread))
 	runtime.KeepAlive(b)
 	return int(nread), errnoErr(errno)
 }
 
 func Pwrite(fd int, b []byte, offset int64) (int, error) {
 	var nwritten size
-	errno := fd_pwrite(int32(fd), makeIOVec(b), 1, filesize(offset), &nwritten)
+	errno := fd_pwrite(int32(fd), makeIOVec(b), 1, filesize(offset), unsafe.Pointer(&nwritten))
 	runtime.KeepAlive(b)
 	return int(nwritten), errnoErr(errno)
 }
 
 func Seek(fd int, offset int64, whence int) (int64, error) {
 	var newoffset filesize
-	errno := fd_seek(int32(fd), filedelta(offset), uint32(whence), &newoffset)
+	errno := fd_seek(int32(fd), filedelta(offset), uint32(whence), unsafe.Pointer(&newoffset))
 	return int64(newoffset), errnoErr(errno)
 }
 
@@ -804,6 +812,6 @@ func Pipe(fd []int) error {
 }
 
 func RandomGet(b []byte) error {
-	errno := random_get(unsafe.SliceData(b), size(len(b)))
+	errno := random_get(bytesPointer(b), size(len(b)))
 	return errnoErr(errno)
 }
diff --git a/src/syscall/syscall_wasip1.go b/src/syscall/syscall_wasip1.go
index d86688f692..73a461763a 100644
--- a/src/syscall/syscall_wasip1.go
+++ b/src/syscall/syscall_wasip1.go
@@ -381,7 +381,7 @@ func Getppid() int {
 
 func Gettimeofday(tv *Timeval) error {
 	var time timestamp
-	if errno := clock_time_get(clockRealtime, 1e3, &time); errno != 0 {
+	if errno := clock_time_get(clockRealtime, 1e3, unsafe.Pointer(&time)); errno != 0 {
 		return errno
 	}
 	tv.setTimestamp(time)
@@ -463,4 +463,4 @@ const (
 
 //go:wasmimport wasi_snapshot_preview1 clock_time_get
 //go:noescape
-func clock_time_get(id clockid, precision timestamp, time *timestamp) Errno
+func clock_time_get(id clockid, precision timestamp, time unsafe.Pointer) Errno