Ensure address is passed in the right endianness

Signed-off-by: Sean Young <sean@mess.org>

src/emit/ewasm.rs

@@ -1260,6 +1260,11 @@ impl<'a> TargetRuntime<'a> for EwasmTarget {
             },
         );
 
+        // address needs its bytes reordered
+        let be_address = contract
+            .builder
+            .build_alloca(contract.address_type(), "be_address");
+
         // call create
         let ret = contract
             .builder
@@ -1276,7 +1281,14 @@ impl<'a> TargetRuntime<'a> for EwasmTarget {
                         .into(),
                     input.into(),
                     input_len.into(),
-                    address.into(),
+                    contract
+                        .builder
+                        .build_pointer_cast(
+                            be_address,
+                            contract.context.i8_type().ptr_type(AddressSpace::Generic),
+                            "be_address",
+                        )
+                        .into(),
                 ],
                 "",
             )
@@ -1285,6 +1297,30 @@ impl<'a> TargetRuntime<'a> for EwasmTarget {
             .unwrap()
             .into_int_value();
 
+        contract.builder.build_call(
+            contract.module.get_function("__beNtoleN").unwrap(),
+            &[
+                contract
+                    .builder
+                    .build_pointer_cast(
+                        be_address,
+                        contract.context.i8_type().ptr_type(AddressSpace::Generic),
+                        "",
+                    )
+                    .into(),
+                contract
+                    .builder
+                    .build_pointer_cast(
+                        address,
+                        contract.context.i8_type().ptr_type(AddressSpace::Generic),
+                        "",
+                    )
+                    .into(),
+                contract.context.i32_type().const_int(20, false).into(),
+            ],
+            "",
+        );
+
         let is_success = contract.builder.build_int_compare(
             IntPredicate::EQ,
             ret,
@@ -1335,6 +1371,35 @@ impl<'a> TargetRuntime<'a> for EwasmTarget {
             .build_alloca(contract.value_type(), "balance");
         contract.builder.build_store(value_ptr, value);
 
+        // address needs its bytes reordered
+        let be_address = contract
+            .builder
+            .build_alloca(contract.address_type(), "be_address");
+
+        contract.builder.build_call(
+            contract.module.get_function("__leNtobeN").unwrap(),
+            &[
+                contract
+                    .builder
+                    .build_pointer_cast(
+                        address,
+                        contract.context.i8_type().ptr_type(AddressSpace::Generic),
+                        "",
+                    )
+                    .into(),
+                contract
+                    .builder
+                    .build_pointer_cast(
+                        be_address,
+                        contract.context.i8_type().ptr_type(AddressSpace::Generic),
+                        "",
+                    )
+                    .into(),
+                contract.context.i32_type().const_int(20, false).into(),
+            ],
+            "",
+        );
+
         // call create
         let ret = contract
             .builder
@@ -1349,7 +1414,14 @@ impl<'a> TargetRuntime<'a> for EwasmTarget {
                     .unwrap(),
                 &[
                     gas.into(),
-                    address.into(),
+                    contract
+                        .builder
+                        .build_pointer_cast(
+                            be_address,
+                            contract.context.i8_type().ptr_type(AddressSpace::Generic),
+                            "address",
+                        )
+                        .into(),
                     contract
                         .builder
                         .build_pointer_cast(

tests/ewasm.rs

@@ -355,7 +355,7 @@ impl Externals for TestRuntime {
                 let mut addr = [0u8; 20];
 
                 if let Err(e) = self.vm.memory.get_into(address_ptr, &mut addr) {
-                    panic!("call: {}", e);
+                    panic!("address: {}", e);
                 }
 
                 println!(