github.com/tetratelabs/wazero@v1.7.3-0.20240513003603-48f702e154b5/internal/integration_test/vs/testdata/hostcall.wat (about)

     1  (module
     2    ;; env.f must be a host function for benchmarks on the cost of host calls which cross the Wasm<>Go boundary.
     3    (func $host_func (import "env" "f") (param i64) (result i64))
     4    ;; call_host_func calls "env.f" and returns the resut as-is.
     5    (func (export "call_host_func") (param i64) (result i64)
     6      local.get 0
     7      call $host_func
     8    )
     9  )