libsplinter/test.wasm at main · splinterhq/libsplinter · GitHub

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(module
  ;; Import the 'set' function from the 'splinter' host module we registered
  ;; See splinter_cli_cmd_wasm.c for the actual implementation. Right now, only
  ;; get and set are mapped.
  ;; Signature: (key_ptr, key_len, val_ptr, val_len) -> i32
  (import "splinter" "set" (func $splinter_set (param i32 i32 i32 i32) (result i32)))

  (memory (export "memory") 1)

  ;; Store our strings in linear memory
  (data (i32.const 0) "__debug")
  (data (i32.const 16) "Hello from WASM!")

  (func (export "_start") (result i32)
    ;; Call splinter:set("wasm_key", "Hello from WASM!")
    i32.const 0  ;; key_ptr
    i32.const 8  ;; key_len
    i32.const 16 ;; val_ptr
    i32.const 16 ;; val_len
    call $splinter_set
  )
)