reentry_tests.cpp

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#include <sysio/vm/backend.hpp>
 
#include <catch2/catch.hpp>
 
using namespace sysio::vm;
 
#include "utils.hpp"
 
/*
(module
  (type (;0;) (func (param i32) (result i32)))
  (import "env" "test_func_0" (func (;0;) (type 0)))
  (import "env" "test_func_1" (func (;1;) (type 0)))
  (func (;2;) (type 0) (param i32) (result i32)
    get_local 0
    i32.const 42
    i32.add)
  (func (;3;) (type 0) (param i32) (result i32)
    get_local 0
    call 0)
  (func (;4;) (type 0) (param i32) (result i32)
    get_local 0
    i32.const 50
    i32.add)
  (func (;5;) (type 0) (param i32) (result i32)
    get_local 0
    call 1)
  (memory (;0;) 1)
  (export "foo" (func 2))
  (export "testbar" (func 3))
  (export "bar" (func 4))
  (export "testbaz" (func 5)))
*/
static wasm_code reentry_wasm = {
  0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x06, 0x01, 0x60,
  0x01, 0x7f, 0x01, 0x7f, 0x02, 0x25, 0x02, 0x03, 0x65, 0x6e, 0x76, 0x0b,
  0x74, 0x65, 0x73, 0x74, 0x5f, 0x66, 0x75, 0x6e, 0x63, 0x5f, 0x30, 0x00,
  0x00, 0x03, 0x65, 0x6e, 0x76, 0x0b, 0x74, 0x65, 0x73, 0x74, 0x5f, 0x66,
  0x75, 0x6e, 0x63, 0x5f, 0x31, 0x00, 0x00, 0x03, 0x05, 0x04, 0x00, 0x00,
  0x00, 0x00, 0x05, 0x03, 0x01, 0x00, 0x01, 0x07, 0x21, 0x04, 0x03, 0x66,
  0x6f, 0x6f, 0x00, 0x02, 0x07, 0x74, 0x65, 0x73, 0x74, 0x62, 0x61, 0x72,
  0x00, 0x03, 0x03, 0x62, 0x61, 0x72, 0x00, 0x04, 0x07, 0x74, 0x65, 0x73,
  0x74, 0x62, 0x61, 0x7a, 0x00, 0x05, 0x0a, 0x1f, 0x04, 0x07, 0x00, 0x20,
  0x00, 0x41, 0x2a, 0x6a, 0x0b, 0x06, 0x00, 0x20, 0x00, 0x10, 0x00, 0x0b,
  0x07, 0x00, 0x20, 0x00, 0x41, 0x32, 0x6a, 0x0b, 0x06, 0x00, 0x20, 0x00,
  0x10, 0x01, 0x0b
};
 
BACKEND_TEST_CASE("test reentry", "[reentry]") {
   struct test_runner;
   using rhf_t = sysio::vm::registered_host_functions<test_runner>;
   using backend_t = sysio::vm::backend<rhf_t, TestType>;
   struct test_runner {
      backend_t* bkend;
      uint32_t test_func_0(uint32_t val) {
         return bkend->call_with_return(*this, "env", "bar", val)->to_ui32() + 50;
      }
      uint32_t test_func_1(uint32_t val) {
         return bkend->call_with_return(*this, "env", "testbar", val)->to_ui32() + 50;
      }
   };
 
   wasm_allocator wa;
   rhf_t::template add<&test_runner::test_func_0>("env", "test_func_0");
   rhf_t::template add<&test_runner::test_func_1>("env", "test_func_1");
 
   test_runner tr;
   backend_t bkend(reentry_wasm, tr, &wa);
 
   tr.bkend = &bkend;
 
   CHECK(bkend.call_with_return(tr, "env", "foo", (uint32_t)10)->to_ui32() == 52);
   CHECK(bkend.call_with_return(tr, "env", "testbar", (uint32_t)10)->to_ui32() == 110);
   CHECK(bkend.call_with_return(tr, "env", "testbaz", (uint32_t)10)->to_ui32() == 160);
}