Merge pull request #5318 from igor-casper/core-81

[VM2] Replace safe transmute with borsh

Author: igor-casper

Cargo.lock

@@ -16,7 +16,7 @@ casper-contract-sdk-sys = { version = "0.1.3", path = "../../smart_contracts/sdk
 num-derive = { workspace = true }
 num-traits = { workspace = true }
 thiserror = "2"
-safe-transmute = "0.11"
+
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 serde = { version = "1", features = ["derive"] }

executor/wasm_common/Cargo.toml

@@ -1,7 +1,7 @@
 //! A crate that shares common types and utilities between the Wasm executor and the Wasm interface.
 pub mod chain_utils;
 pub mod entry_point;
-pub mod env_info;
+
 pub mod error;
 pub mod flags;
 pub mod keyspace;

executor/wasm_common/src/env_info.rs

@@ -26,6 +26,5 @@ either = "1.15"
 num-derive = { workspace = true }
 num-traits = { workspace = true }
 parking_lot = "0.12"
-safe-transmute = "0.11"
 thiserror = "2"
 tracing = "0.1"

executor/wasm_common/src/lib.rs

@@ -1,21 +1,38 @@
-use safe_transmute::TriviallyTransmutable;
+use borsh::BorshSerialize;
 
+#[derive(Copy, Clone, Debug, PartialEq, BorshSerialize)]
 #[repr(C)]
-#[derive(Copy, Clone, Debug, PartialEq)]
 pub(crate) struct ReadInfo {
     /// Allocated pointer.
-    pub(crate) data: u32,
+    pub(crate) data_ptr: u32,
     /// Size in bytes.
     pub(crate) data_size: u32,
 }
 
-unsafe impl TriviallyTransmutable for ReadInfo {}
-
 #[repr(C)]
-#[derive(Copy, Clone, Debug, PartialEq)]
+#[derive(Copy, Clone, Debug, PartialEq, BorshSerialize)]
 
 pub(crate) struct CreateResult {
     pub(crate) package_address: [u8; 32],
 }
 
-unsafe impl TriviallyTransmutable for CreateResult {}
+const _: () = assert!(
+    std::mem::size_of::<CreateResult>() == 32,
+    "CreateResult must be 32 bytes"
+);
+
+#[derive(Clone, Copy, BorshSerialize, Debug, PartialEq)]
+#[repr(C)]
+pub struct EnvInfo {
+    pub block_time: u64,
+    pub transferred_value: u64,
+    pub caller_addr: [u8; 32],
+    pub caller_kind: u32,
+    pub callee_addr: [u8; 32],
+    pub callee_kind: u32,
+    pub protocol_version_major: u32,
+    pub protocol_version_minor: u32,
+    pub protocol_version_patch: u32,
+    pub parent_block_hash: [u8; 32],
+    pub block_height: u64,
+}