Split the runtime and execution code into separate crates.

lib/execute/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "wasmstandalone_execute"
+version = "0.0.0"
+authors = ["The Cretonne Project Developers"]
+publish = false
+description = "JIT-style runtime support for WebAsssembly code in Cretonne"
+repository = "https://github.com/sunfishcode/wasmstandalone"
+license = "MIT/Apache-2.0"
+
+[dependencies]
+cretonne = { git = "https://github.com/stoklund/cretonne.git" }
+cretonne-wasm = { git = "https://github.com/stoklund/cretonne.git" }
+region = "0.0.8"
+wasmstandalone_runtime = { path = "../runtime" }

lib/execute/src/lib.rs

@@ -1,3 +1,12 @@
+//! JIT-style runtime for WebAssembly using Cretonne.
+
+#![deny(missing_docs)]
+
+extern crate cretonne;
+extern crate cton_wasm;
+extern crate region;
+extern crate wasmstandalone_runtime;
+
 use cretonne::Context;
 use cretonne::settings;
 use cretonne::isa::TargetIsa;
@@ -15,7 +24,6 @@ use region::protect;
 use std::collections::HashMap;
 use std::ptr::write_unaligned;
 use std::fmt::Write;
-use standalone;
 
 type RelocRef = u16;
 
@@ -64,7 +72,7 @@ pub struct ExecutableCode {
 pub fn compile_module(
     trans_result: &TranslationResult,
     isa: &TargetIsa,
-    runtime: &standalone::Runtime,
+    runtime: &wasmstandalone_runtime::Runtime,
 ) -> Result<ExecutableCode, String> {
     debug_assert!(
         trans_result.start_index.is_none() ||
@@ -149,7 +157,7 @@ pub fn execute(exec: &ExecutableCode) -> Result<(), String> {
 fn relocate(
     functions_metatada: &[FunctionMetaData],
     functions_code: &mut Vec<Vec<u8>>,
-    runtime: &standalone::Runtime,
+    runtime: &wasmstandalone_runtime::Runtime,
 ) {
     // The relocations are relative to the relocation's address plus four bytes
     for (func_index, function_in_memory) in functions_metatada.iter().enumerate() {

lib/obj/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "wasm2obj"
+name = "wasmstandalone_obj"
 version = "0.0.0"
 authors = ["The Cretonne Project Developers"]
 publish = false
@@ -7,5 +7,5 @@ publish = false
 [dependencies]
 cretonne = { git = "https://github.com/stoklund/cretonne.git" }
 cretonne-wasm = { git = "https://github.com/stoklund/cretonne.git" }
-wasmstandalone = { path = "../wasmstandalone" }
+wasmstandalone_runtime = { path = "../runtime" }
 faerie = { git = "https://github.com/m4b/faerie" }

lib/obj/src/emit_module.rs

@@ -11,7 +11,7 @@ use cretonne::binemit::{RelocSink, Reloc, CodeOffset};
 use cton_wasm::TranslationResult;
 use std::fmt::Write;
 use faerie::Artifact;
-use wasmstandalone;
+use wasmstandalone_runtime;
 
 type RelocRef = u16;
 
@@ -50,7 +50,7 @@ pub fn emit_module(
     trans_result: &TranslationResult,
     obj: &mut Artifact,
     isa: &TargetIsa,
-    runtime: &wasmstandalone::Runtime,
+    runtime: &wasmstandalone_runtime::Runtime,
 ) -> Result<(), String> {
     debug_assert!(
         trans_result.start_index.is_none() ||

lib/obj/src/lib.rs

@@ -1,7 +1,7 @@
 extern crate cretonne;
 extern crate cton_wasm;
 extern crate faerie;
-extern crate wasmstandalone;
+extern crate wasmstandalone_runtime;
 
 mod emit_module;
 

lib/runtime/Cargo.toml

@@ -1,13 +1,12 @@
 [package]
-name = "wasmstandalone"
+name = "wasmstandalone_runtime"
 version = "0.0.0"
 authors = ["The Cretonne Project Developers"]
 publish = false
-description = "Standalone JIT-style runtime support for WebAsssembly code in Cretonne"
-repository = "https://github.com/stoklund/cretonne"
+description = "Standalone runtime support for WebAsssembly code in Cretonne"
+repository = "https://github.com/sunfishcode/wasmstandalone"
 license = "Apache-2.0"
 
 [dependencies]
 cretonne = { git = "https://github.com/stoklund/cretonne.git" }
 cretonne-wasm = { git = "https://github.com/stoklund/cretonne.git" }
-region = "0.0.8"

lib/runtime/src/lib.rs

@@ -1,3 +1,13 @@
+//! Standalone runtime for WebAssembly using Cretonne. Provides functions to translate
+//! `get_global`, `set_global`, `current_memory`, `grow_memory`, `call_indirect` that hardcode in
+//! the translation the base addresses of regions of memory that will hold the globals, tables and
+//! linear memories.
+
+#![deny(missing_docs)]
+
+extern crate cretonne;
+extern crate cton_wasm;
+
 use cton_wasm::{FunctionIndex, GlobalIndex, TableIndex, MemoryIndex, Global, GlobalInit, Table,
                 Memory, WasmRuntime, FuncEnvironment, GlobalValue, SignatureIndex};
 use cretonne::ir::{InstBuilder, FuncRef, ExtFuncData, FunctionName, Signature, ArgumentType,
@@ -12,17 +22,22 @@ use std::mem::transmute;
 use std::ptr::copy_nonoverlapping;
 use std::ptr::write;
 
+/// Runtime state of a WebAssembly table element.
 #[derive(Clone, Debug)]
 pub enum TableElement {
+    /// A element that, if called, produces a trap.
     Trap(),
+    /// A function.
     Function(FunctionIndex),
 }
 
-struct GlobalInfo {
+/// Information about a WebAssembly global variable.
+pub struct GlobalInfo {
     global: Global,
     offset: usize,
 }
 
+/// Runtime state of a WebAssembly global variable.
 pub struct GlobalsData {
     data: Vec<u8>,
     info: Vec<GlobalInfo>,

lib/wasmstandalone/src/lib.rs

@@ -1,16 +0,0 @@
-//! Standalone JIT-style runtime for WebAssembly using Cretonne. Provides functions to translate
-//! `get_global`, `set_global`, `current_memory`, `grow_memory`, `call_indirect` that hardcode in
-//! the translation the base addresses of regions of memory that will hold the globals, tables and
-//! linear memories.
-
-#![deny(missing_docs)]
-
-extern crate cretonne;
-extern crate cton_wasm;
-extern crate region;
-
-mod execution;
-mod standalone;
-
-pub use execution::{compile_module, execute, ExecutableCode};
-pub use standalone::Runtime;