func GetSP(mod api.Module) uint32
GetSP gets the stack pointer, which is needed prior to storing a value when in an operation that can trigger a Go event handler.
See https://github.com/golang/go/blob/go1.20/misc/wasm/wasm_exec.js#L210-L213
func NewFunc(name string, goFunc Func) *wasm.HostFunc
func StubFunction(name string) *wasm.HostFunc
StubFunction stubs functions not used in Go's main source tree. This traps (unreachable opcode) to ensure the function is never called.
type Func func(context.Context, api.Module, Stack)
type Stack interface {
// Name is the function name being invoked.
Name() string
Param(i int) uint64
// ParamBytes reads a byte slice, given its memory offset and length (stack
// positions i, i+1)
ParamBytes(mem api.Memory, i int) []byte
// ParamString reads a string, given its memory offset and length (stack
// positions i, i+1)
ParamString(mem api.Memory, i int) string
ParamInt32(i int) int32
ParamUint32(i int) uint32
// Refresh the stack from the current stack pointer (SP).
//
// Note: This is needed prior to storing a value when in an operation that
// can trigger a Go event handler.
Refresh(api.Module)
SetResult(i int, v uint64)
SetResultBool(i int, v bool)
SetResultI32(i int, v int32)
SetResultI64(i int, v int64)
SetResultUint32(i int, v uint32)
}
func NewStack(name string, mem api.Memory, sp uint32) Stack