diff --git a/lib/clif-backend/src/func_env.rs b/lib/clif-backend/src/func_env.rs
index 789195264..8670e0000 100644
--- a/lib/clif-backend/src/func_env.rs
+++ b/lib/clif-backend/src/func_env.rs
@@ -32,10 +32,10 @@ impl<'env, 'module, 'isa> FuncEnv<'env, 'module, 'isa> {
         let mut signature = self.env.signatures[Converter(clif_sig_index).into()].clone();
 
         // Add the vmctx parameter type to it
-        signature.params.push(ir::AbiParam::special(
-            self.pointer_type(),
-            ir::ArgumentPurpose::VMContext,
-        ));
+        signature.params.insert(
+            0,
+            ir::AbiParam::special(self.pointer_type(), ir::ArgumentPurpose::VMContext),
+        );
 
         // Return signature
         signature
@@ -459,8 +459,8 @@ impl<'env, 'module, 'isa> FuncEnvironment for FuncEnv<'env, 'module, 'isa> {
         // Build a value list for the indirect call instruction containing the call_args
         // and the vmctx parameter.
         let mut args = Vec::with_capacity(call_args.len() + 1);
-        args.extend(call_args.iter().cloned());
         args.push(vmctx_ptr);
+        args.extend(call_args.iter().cloned());
 
         Ok(pos.ins().call_indirect(sig_ref, func_ptr, &args))
     }
@@ -485,8 +485,8 @@ impl<'env, 'module, 'isa> FuncEnvironment for FuncEnv<'env, 'module, 'isa> {
                     .expect("missing vmctx parameter");
 
                 let mut args = Vec::with_capacity(call_args.len() + 1);
-                args.extend(call_args.iter().cloned());
                 args.push(vmctx);
+                args.extend(call_args.iter().cloned());
 
                 Ok(pos.ins().call(callee, &args))
             }
@@ -532,8 +532,8 @@ impl<'env, 'module, 'isa> FuncEnvironment for FuncEnv<'env, 'module, 'isa> {
                 let sig_ref = pos.func.dfg.ext_funcs[callee].signature;
 
                 let mut args = Vec::with_capacity(call_args.len() + 1);
-                args.extend(call_args.iter().cloned());
                 args.push(imported_vmctx_addr);
+                args.extend(call_args.iter().cloned());
 
                 Ok(pos
                     .ins()
@@ -559,9 +559,9 @@ impl<'env, 'module, 'isa> FuncEnvironment for FuncEnv<'env, 'module, 'isa> {
         let signature = pos.func.import_signature(ir::Signature {
             call_conv: self.target_config().default_call_conv,
             params: vec![
-                ir::AbiParam::new(ir::types::I32),
-                ir::AbiParam::new(ir::types::I32),
                 ir::AbiParam::special(self.pointer_type(), ir::ArgumentPurpose::VMContext),
+                ir::AbiParam::new(ir::types::I32),
+                ir::AbiParam::new(ir::types::I32),
             ],
             returns: vec![ir::AbiParam::new(ir::types::I32)],
         });
@@ -604,7 +604,7 @@ impl<'env, 'module, 'isa> FuncEnvironment for FuncEnv<'env, 'module, 'isa> {
 
         let call_inst = pos
             .ins()
-            .call(mem_grow_func, &[const_mem_index, by_value, vmctx]);
+            .call(mem_grow_func, &[vmctx, const_mem_index, by_value]);
 
         Ok(*pos.func.dfg.inst_results(call_inst).first().unwrap())
     }
@@ -623,8 +623,8 @@ impl<'env, 'module, 'isa> FuncEnvironment for FuncEnv<'env, 'module, 'isa> {
         let signature = pos.func.import_signature(ir::Signature {
             call_conv: self.target_config().default_call_conv,
             params: vec![
-                ir::AbiParam::new(ir::types::I32),
                 ir::AbiParam::special(self.pointer_type(), ir::ArgumentPurpose::VMContext),
+                ir::AbiParam::new(ir::types::I32),
             ],
             returns: vec![ir::AbiParam::new(ir::types::I32)],
         });
@@ -664,7 +664,7 @@ impl<'env, 'module, 'isa> FuncEnvironment for FuncEnv<'env, 'module, 'isa> {
             .special_param(ir::ArgumentPurpose::VMContext)
             .expect("missing vmctx parameter");
 
-        let call_inst = pos.ins().call(mem_grow_func, &[const_mem_index, vmctx]);
+        let call_inst = pos.ins().call(mem_grow_func, &[vmctx, const_mem_index]);
 
         Ok(*pos.func.dfg.inst_results(call_inst).first().unwrap())
     }
diff --git a/lib/clif-backend/src/module_env.rs b/lib/clif-backend/src/module_env.rs
index 8a26b2731..65bd5f839 100644
--- a/lib/clif-backend/src/module_env.rs
+++ b/lib/clif-backend/src/module_env.rs
@@ -419,8 +419,8 @@ impl<'module, 'isa, 'data> ModuleEnvironment<'data> for ModuleEnv<'module, 'isa>
                     let signature = pos.func.import_signature(ir::Signature {
                         call_conv: self.target_config().default_call_conv,
                         params: vec![
-                            ir::AbiParam::new(ir::types::I32),
                             ir::AbiParam::special(ir::types::I64, ir::ArgumentPurpose::VMContext),
+                            ir::AbiParam::new(ir::types::I32),
                         ],
                         returns: vec![],
                     });
@@ -457,8 +457,8 @@ impl<'module, 'isa, 'data> ModuleEnvironment<'data> for ModuleEnv<'module, 'isa>
                     let signature = pos.func.import_signature(ir::Signature {
                         call_conv: self.target_config().default_call_conv,
                         params: vec![
-                            ir::AbiParam::new(ir::types::I32),
                             ir::AbiParam::special(ir::types::I64, ir::ArgumentPurpose::VMContext),
+                            ir::AbiParam::new(ir::types::I32),
                         ],
                         returns: vec![],
                     });
@@ -476,8 +476,8 @@ impl<'module, 'isa, 'data> ModuleEnvironment<'data> for ModuleEnv<'module, 'isa>
                     let signature = pos.func.import_signature(ir::Signature {
                         call_conv: self.target_config().default_call_conv,
                         params: vec![
-                            ir::AbiParam::new(ir::types::I64),
                             ir::AbiParam::special(ir::types::I64, ir::ArgumentPurpose::VMContext),
+                            ir::AbiParam::new(ir::types::I64),
                         ],
                         returns: vec![],
                     });
@@ -495,8 +495,8 @@ impl<'module, 'isa, 'data> ModuleEnvironment<'data> for ModuleEnv<'module, 'isa>
                     let signature = pos.func.import_signature(ir::Signature {
                         call_conv: self.target_config().default_call_conv,
                         params: vec![
-                            ir::AbiParam::new(ir::types::F32),
                             ir::AbiParam::special(ir::types::I64, ir::ArgumentPurpose::VMContext),
+                            ir::AbiParam::new(ir::types::F32),
                         ],
                         returns: vec![],
                     });
@@ -514,8 +514,8 @@ impl<'module, 'isa, 'data> ModuleEnvironment<'data> for ModuleEnv<'module, 'isa>
                     let signature = pos.func.import_signature(ir::Signature {
                         call_conv: self.target_config().default_call_conv,
                         params: vec![
-                            ir::AbiParam::new(ir::types::F64),
                             ir::AbiParam::special(ir::types::I64, ir::ArgumentPurpose::VMContext),
+                            ir::AbiParam::new(ir::types::F64),
                         ],
                         returns: vec![],
                     });
@@ -536,14 +536,14 @@ impl<'module, 'isa, 'data> ModuleEnvironment<'data> for ModuleEnv<'module, 'isa>
 
                 let func_index = pos.ins().iconst(ir::types::I32, func_index.index() as i64);
 
-                pos.ins().call(start_debug, &[func_index, vmctx]);
+                pos.ins().call(start_debug, &[vmctx, func_index]);
 
                 for param in new_ebb_params.iter().cloned() {
                     match pos.func.dfg.value_type(param) {
-                        ir::types::I32 => pos.ins().call(i32_print, &[param, vmctx]),
-                        ir::types::I64 => pos.ins().call(i64_print, &[param, vmctx]),
-                        ir::types::F32 => pos.ins().call(f32_print, &[param, vmctx]),
-                        ir::types::F64 => pos.ins().call(f64_print, &[param, vmctx]),
+                        ir::types::I32 => pos.ins().call(i32_print, &[vmctx, param]),
+                        ir::types::I64 => pos.ins().call(i64_print, &[vmctx, param]),
+                        ir::types::F32 => pos.ins().call(f32_print, &[vmctx, param]),
+                        ir::types::F64 => pos.ins().call(f64_print, &[vmctx, param]),
                         _ => unimplemented!(),
                     };
                 }
diff --git a/lib/clif-backend/src/resolver.rs b/lib/clif-backend/src/resolver.rs
index 1e62c0c20..91e6102ef 100644
--- a/lib/clif-backend/src/resolver.rs
+++ b/lib/clif-backend/src/resolver.rs
@@ -350,21 +350,21 @@ fn round_up(n: usize, multiple: usize) -> usize {
     (n + multiple - 1) & !(multiple - 1)
 }
 
-extern "C" fn i32_print(n: i32) {
+extern "C" fn i32_print(_ctx: &mut vm::Ctx, n: i32) {
     print!(" i32: {},", n);
 }
-extern "C" fn i64_print(n: i64) {
+extern "C" fn i64_print(_ctx: &mut vm::Ctx, n: i64) {
     print!(" i64: {},", n);
 }
-extern "C" fn f32_print(n: f32) {
+extern "C" fn f32_print(_ctx: &mut vm::Ctx, n: f32) {
     print!(" f32: {},", n);
 }
-extern "C" fn f64_print(n: f64) {
+extern "C" fn f64_print(_ctx: &mut vm::Ctx, n: f64) {
     print!(" f64: {},", n);
 }
-extern "C" fn start_debug(func_index: u32) {
+extern "C" fn start_debug(_ctx: &mut vm::Ctx, func_index: u32) {
     print!("func ({}), args: [", func_index);
 }
-extern "C" fn end_debug() {
+extern "C" fn end_debug(_ctx: &mut vm::Ctx) {
     println!(" ]");
 }
diff --git a/lib/clif-backend/src/trampoline.rs b/lib/clif-backend/src/trampoline.rs
index 0751cea14..b9d942ba1 100644
--- a/lib/clif-backend/src/trampoline.rs
+++ b/lib/clif-backend/src/trampoline.rs
@@ -169,6 +169,7 @@ fn generate_func(func_sig: &FuncSig) -> ir::Function {
     let mut pos = FuncCursor::new(&mut func).at_first_insertion_point(entry_ebb);
 
     let mut args_vec = Vec::with_capacity(func_sig.params().len() + 1);
+    args_vec.push(vmctx_ptr);
     for (index, wasm_ty) in func_sig.params().iter().enumerate() {
         let mem_flags = ir::MemFlags::trusted();
 
@@ -180,7 +181,6 @@ fn generate_func(func_sig: &FuncSig) -> ir::Function {
         );
         args_vec.push(val);
     }
-    args_vec.push(vmctx_ptr);
 
     let call_inst = pos.ins().call_indirect(export_sig_ref, func_ptr, &args_vec);
 
@@ -229,22 +229,21 @@ fn generate_trampoline_signature() -> ir::Signature {
 fn generate_export_signature(func_sig: &FuncSig) -> ir::Signature {
     let mut export_clif_sig = ir::Signature::new(isa::CallConv::SystemV);
 
-    export_clif_sig.params = func_sig
-        .params()
-        .iter()
-        .map(|wasm_ty| ir::AbiParam {
-            value_type: wasm_ty_to_clif(*wasm_ty),
-            purpose: ir::ArgumentPurpose::Normal,
-            extension: ir::ArgumentExtension::None,
-            location: ir::ArgumentLoc::Unassigned,
-        })
-        .chain(iter::once(ir::AbiParam {
-            value_type: ir::types::I64,
-            purpose: ir::ArgumentPurpose::VMContext,
-            extension: ir::ArgumentExtension::None,
-            location: ir::ArgumentLoc::Unassigned,
-        }))
-        .collect();
+    let func_sig_iter = func_sig.params().iter().map(|wasm_ty| ir::AbiParam {
+        value_type: wasm_ty_to_clif(*wasm_ty),
+        purpose: ir::ArgumentPurpose::Normal,
+        extension: ir::ArgumentExtension::None,
+        location: ir::ArgumentLoc::Unassigned,
+    });
+
+    export_clif_sig.params = iter::once(ir::AbiParam {
+        value_type: ir::types::I64,
+        purpose: ir::ArgumentPurpose::VMContext,
+        extension: ir::ArgumentExtension::None,
+        location: ir::ArgumentLoc::Unassigned,
+    })
+    .chain(func_sig_iter)
+    .collect();
 
     export_clif_sig.returns = func_sig
         .returns()
diff --git a/lib/emscripten/src/README.md b/lib/emscripten/src/README.md
index 128ef1783..54b9f9dc1 100644
--- a/lib/emscripten/src/README.md
+++ b/lib/emscripten/src/README.md
@@ -10,7 +10,7 @@
   ```
 - **abort** ✅ 🔥 &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn abort(message: u32, ctx: &mut Ctx)
+  fn abort(ctx: &mut Ctx, message: u32, )
   ```
 - **abort_on_cannot_grow_memory** ✅ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
@@ -28,11 +28,11 @@
 
 - **\_getenv** ✅ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn _getenv(name: c_int, ctx: &mut Ctx)
+  fn _getenv(ctx: &mut Ctx, name: c_int, )
   ```
 - **\_putenv** ✅ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn _putenv(name: c_int, ctx: &mut Ctx)
+  fn _putenv(ctx: &mut Ctx, name: c_int, )
   ```
 - **\_setenv** ✅ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
@@ -40,7 +40,7 @@
   ```
 - **\_unsetenv** ✅ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn _unsetenv(name: c_int, ctx: &mut Ctx)
+  fn _unsetenv(ctx: &mut Ctx, name: c_int, )
   ```
 
 ###### THREAD
@@ -70,7 +70,7 @@
 
 - **\_emscripten_memcpy_big** ✅ 🔥 &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn _emscripten_memcpy_big(dest: u32, src: u32, len: u32, ctx: &mut Ctx) -> u32
+  fn _emscripten_memcpy_big(ctx: &mut Ctx, dest: u32, src: u32, len: u32, ) -> u32
   ```
 - **enlarge_memory** ✅ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
@@ -78,7 +78,7 @@
   ```
 - **get_total_memory** ✅ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn get_total_memory(ctx: &mut Ctx) -> u32
+  fn get_total_memory(ctx: &mut Ctx, ) -> u32
   ```
 
 ###### TIMING
@@ -337,7 +337,7 @@
   ```
 - **open** (\_\_\_syscall5) ✅ ❗️ 🔥 &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn open(path: u32, flags: c_int, mode: c_int, ctx: &mut Ctx) -> c_int
+  fn open(ctx: &mut Ctx, path: u32, flags: c_int, mode: c_int, ) -> c_int
   ```
 - **openat** (\_\_\_syscall295) &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
@@ -385,7 +385,7 @@
   ```
 - **read** (\_\_\_syscall3) ✅ ❗️ &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
-  fn read(fd: c_int, buf: u32, count: size_t, ctx: &mut Ctx) -> ssize_t
+  fn read(ctx: &mut Ctx, fd: c_int, buf: u32, count: size_t, ) -> ssize_t
   ```
 - **readlink** (\_\_\_syscall85) &nbsp;&nbsp;&nbsp;&nbsp;[:top:](#host-apis)
   ```rust
diff --git a/lib/emscripten/src/env/mod.rs b/lib/emscripten/src/env/mod.rs
index 50b7a48f9..89f55fd09 100644
--- a/lib/emscripten/src/env/mod.rs
+++ b/lib/emscripten/src/env/mod.rs
@@ -14,16 +14,16 @@ use crate::{allocate_on_stack, EmscriptenData};
 use std::os::raw::c_int;
 use wasmer_runtime_core::vm::Ctx;
 
-pub fn _getaddrinfo(_one: i32, _two: i32, _three: i32, _four: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _getaddrinfo(_ctx: &mut Ctx, _one: i32, _two: i32, _three: i32, _four: i32) -> i32 {
     debug!("emscripten::_getaddrinfo");
     -1
 }
 
-pub fn call_malloc(size: u32, ctx: &mut Ctx) -> u32 {
+pub fn call_malloc(ctx: &mut Ctx, size: u32) -> u32 {
     get_emscripten_data(ctx).malloc.call(size).unwrap()
 }
 
-pub fn call_memalign(alignment: u32, size: u32, ctx: &mut Ctx) -> u32 {
+pub fn call_memalign(ctx: &mut Ctx, alignment: u32, size: u32) -> u32 {
     if let Some(memalign) = &get_emscripten_data(ctx).memalign {
         memalign.call(alignment, size).unwrap()
     } else {
@@ -31,7 +31,7 @@ pub fn call_memalign(alignment: u32, size: u32, ctx: &mut Ctx) -> u32 {
     }
 }
 
-pub fn call_memset(pointer: u32, value: u32, size: u32, ctx: &mut Ctx) -> u32 {
+pub fn call_memset(ctx: &mut Ctx, pointer: u32, value: u32, size: u32) -> u32 {
     get_emscripten_data(ctx)
         .memset
         .call(pointer, value, size)
@@ -48,16 +48,16 @@ pub fn _getpagesize(_ctx: &mut Ctx) -> u32 {
 }
 
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___build_environment(environ: c_int, ctx: &mut Ctx) {
+pub fn ___build_environment(ctx: &mut Ctx, environ: c_int) {
     debug!("emscripten::___build_environment {}", environ);
     const MAX_ENV_VALUES: u32 = 64;
     const TOTAL_ENV_SIZE: u32 = 1024;
     let environment = emscripten_memory_pointer!(ctx.memory(0), environ) as *mut c_int;
     unsafe {
         let (pool_offset, _pool_slice): (u32, &mut [u8]) =
-            allocate_on_stack(TOTAL_ENV_SIZE as u32, ctx);
+            allocate_on_stack(ctx, TOTAL_ENV_SIZE as u32);
         let (env_offset, _env_slice): (u32, &mut [u8]) =
-            allocate_on_stack((MAX_ENV_VALUES * 4) as u32, ctx);
+            allocate_on_stack(ctx, (MAX_ENV_VALUES * 4) as u32);
         let env_ptr = emscripten_memory_pointer!(ctx.memory(0), env_offset) as *mut c_int;
         let mut _pool_ptr = emscripten_memory_pointer!(ctx.memory(0), pool_offset) as *mut c_int;
         *env_ptr = pool_offset as i32;
@@ -70,7 +70,7 @@ pub fn ___build_environment(environ: c_int, ctx: &mut Ctx) {
     // };
 }
 
-pub fn ___assert_fail(a: c_int, b: c_int, c: c_int, d: c_int, _ctx: &mut Ctx) {
+pub fn ___assert_fail(_ctx: &mut Ctx, a: c_int, b: c_int, c: c_int, d: c_int) {
     debug!("emscripten::___assert_fail {} {} {} {}", a, b, c, d);
     // TODO: Implement like emscripten expects regarding memory/page size
     // TODO raise an error
diff --git a/lib/emscripten/src/env/unix/mod.rs b/lib/emscripten/src/env/unix/mod.rs
index d701bd6e8..cc7e01b03 100644
--- a/lib/emscripten/src/env/unix/mod.rs
+++ b/lib/emscripten/src/env/unix/mod.rs
@@ -13,7 +13,7 @@ use wasmer_runtime_core::vm::Ctx;
 
 // #[no_mangle]
 /// emscripten: _getenv // (name: *const char) -> *const c_char;
-pub fn _getenv(name: i32, ctx: &mut Ctx) -> u32 {
+pub fn _getenv(ctx: &mut Ctx, name: i32) -> u32 {
     debug!("emscripten::_getenv");
 
     let name_addr = emscripten_memory_pointer!(ctx.memory(0), name) as *const c_char;
@@ -29,7 +29,7 @@ pub fn _getenv(name: i32, ctx: &mut Ctx) -> u32 {
 }
 
 /// emscripten: _setenv // (name: *const char, name: *const value, overwrite: int);
-pub fn _setenv(name: c_int, value: c_int, overwrite: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _setenv(ctx: &mut Ctx, name: c_int, value: c_int, overwrite: c_int) -> c_int {
     debug!("emscripten::_setenv");
 
     let name_addr = emscripten_memory_pointer!(ctx.memory(0), name) as *const c_char;
@@ -42,7 +42,7 @@ pub fn _setenv(name: c_int, value: c_int, overwrite: c_int, ctx: &mut Ctx) -> c_
 }
 
 /// emscripten: _putenv // (name: *const char);
-pub fn _putenv(name: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _putenv(ctx: &mut Ctx, name: c_int) -> c_int {
     debug!("emscripten::_putenv");
 
     let name_addr = emscripten_memory_pointer!(ctx.memory(0), name) as *const c_char;
@@ -53,7 +53,7 @@ pub fn _putenv(name: c_int, ctx: &mut Ctx) -> c_int {
 }
 
 /// emscripten: _unsetenv // (name: *const char);
-pub fn _unsetenv(name: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _unsetenv(ctx: &mut Ctx, name: c_int) -> c_int {
     debug!("emscripten::_unsetenv");
 
     let name_addr = emscripten_memory_pointer!(ctx.memory(0), name) as *const c_char;
@@ -64,7 +64,7 @@ pub fn _unsetenv(name: c_int, ctx: &mut Ctx) -> c_int {
 }
 
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _getpwnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _getpwnam(ctx: &mut Ctx, name_ptr: c_int) -> c_int {
     debug!("emscripten::_getpwnam {}", name_ptr);
 
     #[repr(C)]
@@ -85,7 +85,7 @@ pub fn _getpwnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
 
     unsafe {
         let passwd = &*libc_getpwnam(name.as_ptr());
-        let passwd_struct_offset = call_malloc(mem::size_of::<GuestPasswd>() as _, ctx);
+        let passwd_struct_offset = call_malloc(ctx, mem::size_of::<GuestPasswd>() as _);
 
         let passwd_struct_ptr =
             emscripten_memory_pointer!(ctx.memory(0), passwd_struct_offset) as *mut GuestPasswd;
@@ -102,7 +102,7 @@ pub fn _getpwnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
 }
 
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _getgrnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _getgrnam(ctx: &mut Ctx, name_ptr: c_int) -> c_int {
     debug!("emscripten::_getgrnam {}", name_ptr);
 
     #[repr(C)]
@@ -120,7 +120,7 @@ pub fn _getgrnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
 
     unsafe {
         let group = &*libc_getgrnam(name.as_ptr());
-        let group_struct_offset = call_malloc(mem::size_of::<GuestGroup>() as _, ctx);
+        let group_struct_offset = call_malloc(ctx, mem::size_of::<GuestGroup>() as _);
 
         let group_struct_ptr =
             emscripten_memory_pointer!(ctx.memory(0), group_struct_offset) as *mut GuestGroup;
@@ -133,7 +133,7 @@ pub fn _getgrnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
     }
 }
 
-pub fn _sysconf(name: c_int, _ctx: &mut Ctx) -> i32 {
+pub fn _sysconf(_ctx: &mut Ctx, name: c_int) -> i32 {
     debug!("emscripten::_sysconf {}", name);
     // TODO: Implement like emscripten expects regarding memory/page size
     unsafe { sysconf(name) as i32 } // TODO review i64
diff --git a/lib/emscripten/src/env/windows/mod.rs b/lib/emscripten/src/env/windows/mod.rs
index b4171e13c..b4ee6ecff 100644
--- a/lib/emscripten/src/env/windows/mod.rs
+++ b/lib/emscripten/src/env/windows/mod.rs
@@ -16,7 +16,7 @@ extern "C" {
 
 // #[no_mangle]
 /// emscripten: _getenv // (name: *const char) -> *const c_char;
-pub fn _getenv(name: u32, ctx: &mut Ctx) -> u32 {
+pub fn _getenv(ctx: &mut Ctx, name: u32) -> u32 {
     debug!("emscripten::_getenv");
     let name_string = read_string_from_wasm(ctx.memory(0), name);
     debug!("=> name({:?})", name_string);
@@ -28,7 +28,7 @@ pub fn _getenv(name: u32, ctx: &mut Ctx) -> u32 {
 }
 
 /// emscripten: _setenv // (name: *const char, name: *const value, overwrite: int);
-pub fn _setenv(name: u32, value: u32, overwrite: u32, ctx: &mut Ctx) -> c_int {
+pub fn _setenv(ctx: &mut Ctx, name: u32, value: u32, overwrite: u32) -> c_int {
     debug!("emscripten::_setenv");
     let name_addr = emscripten_memory_pointer!(ctx.memory(0), name);
     let value_addr = emscripten_memory_pointer!(ctx.memory(0), value);
@@ -44,7 +44,7 @@ pub fn _setenv(name: u32, value: u32, overwrite: u32, ctx: &mut Ctx) -> c_int {
 }
 
 /// emscripten: _putenv // (name: *const char);
-pub fn _putenv(name: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _putenv(ctx: &mut Ctx, name: c_int) -> c_int {
     debug!("emscripten::_putenv");
 
     let name_addr = emscripten_memory_pointer!(ctx.memory(0), name) as *const c_char;
@@ -54,7 +54,7 @@ pub fn _putenv(name: c_int, ctx: &mut Ctx) -> c_int {
 }
 
 /// emscripten: _unsetenv // (name: *const char);
-pub fn _unsetenv(name: u32, ctx: &mut Ctx) -> c_int {
+pub fn _unsetenv(ctx: &mut Ctx, name: u32) -> c_int {
     debug!("emscripten::_unsetenv");
     let name_addr = emscripten_memory_pointer!(ctx.memory(0), name);
     let name = read_string_from_wasm(ctx.memory(0), name);
@@ -67,7 +67,7 @@ pub fn _unsetenv(name: u32, ctx: &mut Ctx) -> c_int {
 }
 
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _getpwnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _getpwnam(ctx: &mut Ctx, name_ptr: c_int) -> c_int {
     debug!("emscripten::_getpwnam {}", name_ptr);
 
     #[repr(C)]
@@ -83,7 +83,7 @@ pub fn _getpwnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
 
     // stub this in windows as it is not valid
     unsafe {
-        let passwd_struct_offset = call_malloc(mem::size_of::<GuestPasswd>() as _, ctx);
+        let passwd_struct_offset = call_malloc(ctx, mem::size_of::<GuestPasswd>() as _);
         let passwd_struct_ptr =
             emscripten_memory_pointer!(ctx.memory(0), passwd_struct_offset) as *mut GuestPasswd;
         (*passwd_struct_ptr).pw_name = 0;
@@ -99,7 +99,7 @@ pub fn _getpwnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
 }
 
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _getgrnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _getgrnam(ctx: &mut Ctx, name_ptr: c_int) -> c_int {
     debug!("emscripten::_getgrnam {}", name_ptr);
 
     #[repr(C)]
@@ -112,7 +112,7 @@ pub fn _getgrnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
 
     // stub the group struct as it is not supported on windows
     unsafe {
-        let group_struct_offset = call_malloc(mem::size_of::<GuestGroup>() as _, ctx);
+        let group_struct_offset = call_malloc(ctx, mem::size_of::<GuestGroup>() as _);
         let group_struct_ptr =
             emscripten_memory_pointer!(ctx.memory(0), group_struct_offset) as *mut GuestGroup;
         (*group_struct_ptr).gr_name = 0;
@@ -123,7 +123,7 @@ pub fn _getgrnam(name_ptr: c_int, ctx: &mut Ctx) -> c_int {
     }
 }
 
-pub fn _sysconf(name: c_int, _ctx: &mut Ctx) -> c_long {
+pub fn _sysconf(_ctx: &mut Ctx, name: c_int) -> c_long {
     debug!("emscripten::_sysconf {}", name);
     // stub because sysconf is not valid on windows
     0
diff --git a/lib/emscripten/src/errno.rs b/lib/emscripten/src/errno.rs
index 647932810..06267e210 100644
--- a/lib/emscripten/src/errno.rs
+++ b/lib/emscripten/src/errno.rs
@@ -1,7 +1,7 @@
 // use std::collections::HashMap;
 use wasmer_runtime_core::vm::Ctx;
 
-pub fn ___seterrno(value: i32, _ctx: &mut Ctx) {
+pub fn ___seterrno(_ctx: &mut Ctx, value: i32) {
     debug!("emscripten::___seterrno {}", value);
     // TODO: Incomplete impl
     eprintln!("failed to set errno!");
diff --git a/lib/emscripten/src/exception.rs b/lib/emscripten/src/exception.rs
index b1814e107..b0aab78dd 100644
--- a/lib/emscripten/src/exception.rs
+++ b/lib/emscripten/src/exception.rs
@@ -3,14 +3,14 @@ use super::process::_abort;
 use wasmer_runtime_core::vm::Ctx;
 
 /// emscripten: ___cxa_allocate_exception
-pub fn ___cxa_allocate_exception(size: u32, ctx: &mut Ctx) -> u32 {
+pub fn ___cxa_allocate_exception(ctx: &mut Ctx, size: u32) -> u32 {
     debug!("emscripten::___cxa_allocate_exception");
-    env::call_malloc(size as _, ctx)
+    env::call_malloc(ctx, size as _)
 }
 
 /// emscripten: ___cxa_throw
 /// TODO: We don't have support for exceptions yet
-pub fn ___cxa_throw(_ptr: u32, _ty: u32, _destructor: u32, ctx: &mut Ctx) {
+pub fn ___cxa_throw(ctx: &mut Ctx, _ptr: u32, _ty: u32, _destructor: u32) {
     debug!("emscripten::___cxa_throw");
     _abort(ctx);
 }
diff --git a/lib/emscripten/src/io/unix.rs b/lib/emscripten/src/io/unix.rs
index a7c26a196..38324ac1e 100644
--- a/lib/emscripten/src/io/unix.rs
+++ b/lib/emscripten/src/io/unix.rs
@@ -3,12 +3,12 @@ use libc::printf as _printf;
 use wasmer_runtime_core::vm::Ctx;
 
 /// putchar
-pub fn putchar(chr: i32, ctx: &mut Ctx) {
+pub fn putchar(ctx: &mut Ctx, chr: i32) {
     unsafe { libc::putchar(chr) };
 }
 
 /// printf
-pub fn printf(memory_offset: i32, extra: i32, ctx: &mut Ctx) -> i32 {
+pub fn printf(ctx: &mut Ctx, memory_offset: i32, extra: i32) -> i32 {
     debug!("emscripten::printf {}, {}", memory_offset, extra);
     unsafe {
         let addr = emscripten_memory_pointer!(ctx.memory(0), memory_offset) as _;
diff --git a/lib/emscripten/src/io/windows.rs b/lib/emscripten/src/io/windows.rs
index b85d9c54a..903d05900 100644
--- a/lib/emscripten/src/io/windows.rs
+++ b/lib/emscripten/src/io/windows.rs
@@ -15,12 +15,12 @@ use wasmer_runtime_core::vm::Ctx;
 //}
 
 /// putchar
-pub fn putchar(chr: i32, ctx: &mut Ctx) {
+pub fn putchar(ctx: &mut Ctx, chr: i32) {
     unsafe { libc::putchar(chr) };
 }
 
 /// printf
-pub fn printf(memory_offset: i32, extra: i32, ctx: &mut Ctx) -> i32 {
+pub fn printf(ctx: &mut Ctx, memory_offset: i32, extra: i32) -> i32 {
     debug!("emscripten::printf {}, {}", memory_offset, extra);
     //    unsafe {
     //        let addr = emscripten_memory_pointer!(ctx.memory(0), memory_offset) as _;
diff --git a/lib/emscripten/src/jmp.rs b/lib/emscripten/src/jmp.rs
index 0c63593aa..c5b54f02b 100644
--- a/lib/emscripten/src/jmp.rs
+++ b/lib/emscripten/src/jmp.rs
@@ -4,7 +4,7 @@ use std::cell::UnsafeCell;
 use wasmer_runtime_core::vm::Ctx;
 
 /// setjmp
-pub fn __setjmp(env_addr: u32, ctx: &mut Ctx) -> c_int {
+pub fn __setjmp(ctx: &mut Ctx, env_addr: u32) -> c_int {
     debug!("emscripten::__setjmp (setjmp)");
     unsafe {
         // Rather than using the env as the holder of the jump buffer pointer,
@@ -15,7 +15,7 @@ pub fn __setjmp(env_addr: u32, ctx: &mut Ctx) -> c_int {
         let jump_buf: UnsafeCell<[u32; 27]> = UnsafeCell::new([0; 27]);
         let jumps = &mut get_emscripten_data(ctx).jumps;
         let result = setjmp(jump_buf.get() as _);
-        // We set the jump index to be the last value of jumps
+        // We set the jump index to be the last 3value of jumps
         *jump_index = jumps.len() as _;
         // We hold the reference of the jump buffer
         jumps.push(jump_buf);
@@ -25,7 +25,7 @@ pub fn __setjmp(env_addr: u32, ctx: &mut Ctx) -> c_int {
 
 /// longjmp
 #[allow(unreachable_code)]
-pub fn __longjmp(env_addr: u32, val: c_int, ctx: &mut Ctx) {
+pub fn __longjmp(ctx: &mut Ctx, env_addr: u32, val: c_int) {
     debug!("emscripten::__longjmp (longmp)");
     unsafe {
         // We retrieve the jump index from the env address
diff --git a/lib/emscripten/src/lib.rs b/lib/emscripten/src/lib.rs
index c8e98a985..df0a0da6c 100644
--- a/lib/emscripten/src/lib.rs
+++ b/lib/emscripten/src/lib.rs
@@ -132,7 +132,7 @@ pub fn run_emscripten_instance(
     let num_params = main_func.signature().params().len();
     let _result = match num_params {
         2 => {
-            let (argc, argv) = store_module_arguments(path, args, instance.context_mut());
+            let (argc, argv) = store_module_arguments(instance.context_mut(), path, args);
             instance.call("_main", &[Value::I32(argc as i32), Value::I32(argv as i32)])?;
         }
         0 => {
@@ -149,17 +149,17 @@ pub fn run_emscripten_instance(
     Ok(())
 }
 
-fn store_module_arguments(path: &str, args: Vec<&str>, ctx: &mut Ctx) -> (u32, u32) {
+fn store_module_arguments(ctx: &mut Ctx, path: &str, args: Vec<&str>) -> (u32, u32) {
     let argc = args.len() + 1;
 
     let mut args_slice = vec![0; argc];
-    args_slice[0] = unsafe { allocate_cstr_on_stack(path, ctx).0 };
+    args_slice[0] = unsafe { allocate_cstr_on_stack(ctx, path).0 };
     for (slot, arg) in args_slice[1..argc].iter_mut().zip(args.iter()) {
-        *slot = unsafe { allocate_cstr_on_stack(&arg, ctx).0 };
+        *slot = unsafe { allocate_cstr_on_stack(ctx, &arg).0 };
     }
 
     let (argv_offset, argv_slice): (_, &mut [u32]) =
-        unsafe { allocate_on_stack(((argc + 1) * 4) as u32, ctx) };
+        unsafe { allocate_on_stack(ctx, ((argc + 1) * 4) as u32) };
     assert!(!argv_slice.is_empty());
     for (slot, arg) in argv_slice[0..argc].iter_mut().zip(args_slice.iter()) {
         *slot = *arg
diff --git a/lib/emscripten/src/linking.rs b/lib/emscripten/src/linking.rs
index e61b9d1b1..831712e91 100644
--- a/lib/emscripten/src/linking.rs
+++ b/lib/emscripten/src/linking.rs
@@ -3,19 +3,19 @@ use wasmer_runtime_core::vm::Ctx;
 // TODO: Need to implement.
 
 /// emscripten: dlopen(filename: *const c_char, flag: c_int) -> *mut c_void
-pub fn _dlopen(_filename: u32, _flag: u32, _ctx: &mut Ctx) -> i32 {
+pub fn _dlopen(_ctx: &mut Ctx, _filename: u32, _flag: u32) -> i32 {
     debug!("emscripten::_dlopen");
     -1
 }
 
 /// emscripten: dlclose(handle: *mut c_void) -> c_int
-pub fn _dlclose(_filename: u32, _ctx: &mut Ctx) -> i32 {
+pub fn _dlclose(_ctx: &mut Ctx, _filename: u32) -> i32 {
     debug!("emscripten::_dlclose");
     -1
 }
 
 /// emscripten: dlsym(handle: *mut c_void, symbol: *const c_char) -> *mut c_void
-pub fn _dlsym(_filepath: u32, _symbol: u32, _ctx: &mut Ctx) -> i32 {
+pub fn _dlsym(_ctx: &mut Ctx, _filepath: u32, _symbol: u32) -> i32 {
     debug!("emscripten::_dlsym");
     -1
 }
diff --git a/lib/emscripten/src/lock.rs b/lib/emscripten/src/lock.rs
index 005a1baed..45f09581f 100644
--- a/lib/emscripten/src/lock.rs
+++ b/lib/emscripten/src/lock.rs
@@ -2,16 +2,16 @@ use libc::c_int;
 use wasmer_runtime_core::vm::Ctx;
 
 // NOTE: Not implemented by Emscripten
-pub fn ___lock(what: c_int, _ctx: &mut Ctx) {
+pub fn ___lock(_ctx: &mut Ctx, what: c_int) {
     debug!("emscripten::___lock {}", what);
 }
 
 // NOTE: Not implemented by Emscripten
-pub fn ___unlock(what: c_int, _ctx: &mut Ctx) {
+pub fn ___unlock(_ctx: &mut Ctx, what: c_int) {
     debug!("emscripten::___unlock {}", what);
 }
 
 // NOTE: Not implemented by Emscripten
-pub fn ___wait(_which: u32, _varargs: u32, _three: u32, _four: u32, _ctx: &mut Ctx) {
+pub fn ___wait(_ctx: &mut Ctx, _which: u32, _varargs: u32, _three: u32, _four: u32) {
     debug!("emscripten::___wait");
 }
diff --git a/lib/emscripten/src/math.rs b/lib/emscripten/src/math.rs
index 16f3ed419..a60966a1c 100644
--- a/lib/emscripten/src/math.rs
+++ b/lib/emscripten/src/math.rs
@@ -1,23 +1,23 @@
 use wasmer_runtime_core::vm::Ctx;
 
 /// emscripten: _llvm_log10_f64
-pub fn _llvm_log10_f64(value: f64, _ctx: &mut Ctx) -> f64 {
+pub fn _llvm_log10_f64(_ctx: &mut Ctx, value: f64) -> f64 {
     debug!("emscripten::_llvm_log10_f64");
     value.log10()
 }
 
 /// emscripten: _llvm_log2_f64
-pub fn _llvm_log2_f64(value: f64, _ctx: &mut Ctx) -> f64 {
+pub fn _llvm_log2_f64(_ctx: &mut Ctx, value: f64) -> f64 {
     debug!("emscripten::_llvm_log2_f64");
     value.log2()
 }
 
-pub fn _llvm_log10_f32(_value: f64, _ctx: &mut Ctx) -> f64 {
+pub fn _llvm_log10_f32(_ctx: &mut Ctx, _value: f64) -> f64 {
     debug!("emscripten::_llvm_log10_f32");
     -1.0
 }
 
-pub fn _llvm_log2_f32(_value: f64, _ctx: &mut Ctx) -> f64 {
+pub fn _llvm_log2_f32(_ctx: &mut Ctx, _value: f64) -> f64 {
     debug!("emscripten::_llvm_log10_f32");
     -1.0
 }
@@ -28,12 +28,12 @@ pub fn _emscripten_random(_ctx: &mut Ctx) -> f64 {
 }
 
 // emscripten: f64-rem
-pub fn f64_rem(x: f64, y: f64, _ctx: &mut Ctx) -> f64 {
+pub fn f64_rem(_ctx: &mut Ctx, x: f64, y: f64) -> f64 {
     debug!("emscripten::f64-rem");
     x % y
 }
 
 // emscripten: global.Math pow
-pub fn pow(x: f64, y: f64, _ctx: &mut Ctx) -> f64 {
+pub fn pow(_ctx: &mut Ctx, x: f64, y: f64) -> f64 {
     x.powf(y)
 }
diff --git a/lib/emscripten/src/memory.rs b/lib/emscripten/src/memory.rs
index e174e023d..c4540dff0 100644
--- a/lib/emscripten/src/memory.rs
+++ b/lib/emscripten/src/memory.rs
@@ -3,7 +3,7 @@ use libc::{c_int, c_void, memcpy, size_t};
 use wasmer_runtime_core::vm::Ctx;
 
 /// emscripten: _emscripten_memcpy_big
-pub fn _emscripten_memcpy_big(dest: u32, src: u32, len: u32, ctx: &mut Ctx) -> u32 {
+pub fn _emscripten_memcpy_big(ctx: &mut Ctx, dest: u32, src: u32, len: u32) -> u32 {
     debug!(
         "emscripten::_emscripten_memcpy_big {}, {}, {}",
         dest, src, len
@@ -35,12 +35,12 @@ pub fn enlarge_memory(_ctx: &mut Ctx) -> u32 {
 /// emscripten: abortOnCannotGrowMemory
 pub fn abort_on_cannot_grow_memory(ctx: &mut Ctx) -> u32 {
     debug!("emscripten::abort_on_cannot_grow_memory");
-    abort_with_message("Cannot enlarge memory arrays!", ctx);
+    abort_with_message(ctx, "Cannot enlarge memory arrays!");
     0
 }
 
 /// emscripten: ___map_file
-pub fn ___map_file(_one: u32, _two: u32, _ctx: &mut Ctx) -> c_int {
+pub fn ___map_file(_ctx: &mut Ctx, _one: u32, _two: u32) -> c_int {
     debug!("emscripten::___map_file");
     // NOTE: TODO: Em returns -1 here as well. May need to implement properly
     -1
diff --git a/lib/emscripten/src/nullfunc.rs b/lib/emscripten/src/nullfunc.rs
index 253edf8f6..7fb44ab11 100644
--- a/lib/emscripten/src/nullfunc.rs
+++ b/lib/emscripten/src/nullfunc.rs
@@ -1,67 +1,67 @@
 use super::process::abort_with_message;
 use wasmer_runtime_core::vm::Ctx;
 
-pub fn nullfunc_i(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_i(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_i {}", x);
-    abort_with_message("Invalid function pointer called with signature 'i'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'i'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_ii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_ii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_ii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'ii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'ii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_iii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_iii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_iii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'iii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'iii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_iiii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_iiii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_iiii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'iiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'iiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_iiiii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_iiiii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_iiiii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'iiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'iiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_iiiiii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_iiiiii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_iiiiii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'iiiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'iiiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_v(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_v(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_v {}", x);
-    abort_with_message("Invalid function pointer called with signature 'v'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'v'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_vi(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_vi(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_vi {}", x);
-    abort_with_message("Invalid function pointer called with signature 'vi'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'vi'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_vii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_vii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_vii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'vii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'vii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_viii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_viii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_viii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'viii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'viii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_viiii(x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_viiii(ctx: &mut Ctx, x: u32) {
     debug!("emscripten::nullfunc_viiii {}", x);
-    abort_with_message("Invalid function pointer called with signature 'viiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'viiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_viiiii(_x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_viiiii(ctx: &mut Ctx, _x: u32) {
     debug!("emscripten::nullfunc_viiiii");
-    abort_with_message("Invalid function pointer called with signature 'viiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'viiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
 
-pub fn nullfunc_viiiiii(_x: u32, ctx: &mut Ctx) {
+pub fn nullfunc_viiiiii(ctx: &mut Ctx, _x: u32) {
     debug!("emscripten::nullfunc_viiiiii");
-    abort_with_message("Invalid function pointer called with signature 'viiiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)", ctx);
+    abort_with_message(ctx, "Invalid function pointer called with signature 'viiiiii'. Perhaps this is an invalid value (e.g. caused by calling a virtual method on a NULL pointer)? Or calling a function with an incorrect type, which will fail? (it is worth building your source files with -Werror (warnings are errors), as warnings can indicate undefined behavior which can cause this)");
 }
diff --git a/lib/emscripten/src/process.rs b/lib/emscripten/src/process.rs
index d6be7a78b..8d1dddb48 100644
--- a/lib/emscripten/src/process.rs
+++ b/lib/emscripten/src/process.rs
@@ -9,7 +9,7 @@ type pid_t = c_int;
 use std::ffi::CStr;
 use wasmer_runtime_core::vm::Ctx;
 
-pub fn abort_with_message(message: &str, ctx: &mut Ctx) {
+pub fn abort_with_message(ctx: &mut Ctx, message: &str) {
     debug!("emscripten::abort_with_message");
     println!("{}", message);
     _abort(ctx);
@@ -34,19 +34,19 @@ pub fn _endgrent(_ctx: &mut Ctx) {
     debug!("emscripten::_endgrent");
 }
 
-pub fn _execve(_one: i32, _two: i32, _three: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _execve(_ctx: &mut Ctx, _one: i32, _two: i32, _three: i32) -> i32 {
     debug!("emscripten::_execve");
     -1
 }
 
 #[allow(unreachable_code)]
-pub fn _exit(status: c_int, _ctx: &mut Ctx) {
+pub fn _exit(_ctx: &mut Ctx, status: c_int) {
     // -> !
     debug!("emscripten::_exit {}", status);
     unsafe { exit(status) }
 }
 
-pub fn em_abort(message: u32, ctx: &mut Ctx) {
+pub fn em_abort(ctx: &mut Ctx, message: u32) {
     debug!("emscripten::em_abort {}", message);
     let message_addr = emscripten_memory_pointer!(ctx.memory(0), message) as *mut c_char;
     unsafe {
@@ -54,11 +54,11 @@ pub fn em_abort(message: u32, ctx: &mut Ctx) {
             .to_str()
             .unwrap_or("Unexpected abort");
 
-        abort_with_message(message, ctx);
+        abort_with_message(ctx, message);
     }
 }
 
-pub fn _kill(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _kill(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::_kill");
     -1
 }
@@ -73,26 +73,26 @@ pub fn _llvm_stacksave(_ctx: &mut Ctx) -> i32 {
     -1
 }
 
-pub fn _llvm_stackrestore(_one: i32, _ctx: &mut Ctx) {
+pub fn _llvm_stackrestore(_ctx: &mut Ctx, _one: i32) {
     debug!("emscripten::_llvm_stackrestore");
 }
 
-pub fn _raise(_one: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _raise(_ctx: &mut Ctx, _one: i32) -> i32 {
     debug!("emscripten::_raise");
     -1
 }
 
-pub fn _sem_init(_one: i32, _two: i32, _three: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _sem_init(_ctx: &mut Ctx, _one: i32, _two: i32, _three: i32) -> i32 {
     debug!("emscripten::_sem_init");
     -1
 }
 
-pub fn _sem_post(_one: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _sem_post(_ctx: &mut Ctx, _one: i32) -> i32 {
     debug!("emscripten::_sem_post");
     -1
 }
 
-pub fn _sem_wait(_one: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _sem_wait(_ctx: &mut Ctx, _one: i32) -> i32 {
     debug!("emscripten::_sem_post");
     -1
 }
@@ -107,53 +107,53 @@ pub fn _setgrent(_ctx: &mut Ctx) {
     debug!("emscripten::_setgrent");
 }
 
-pub fn _setgroups(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _setgroups(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::_setgroups");
     -1
 }
 
-pub fn _setitimer(_one: i32, _two: i32, _three: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _setitimer(_ctx: &mut Ctx, _one: i32, _two: i32, _three: i32) -> i32 {
     debug!("emscripten::_setitimer");
     -1
 }
 
-pub fn _usleep(_one: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _usleep(_ctx: &mut Ctx, _one: i32) -> i32 {
     debug!("emscripten::_usleep");
     -1
 }
 
-pub fn _utimes(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _utimes(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::_utimes");
     -1
 }
 
-pub fn _waitpid(_one: i32, _two: i32, _three: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _waitpid(_ctx: &mut Ctx, _one: i32, _two: i32, _three: i32) -> i32 {
     debug!("emscripten::_waitpid");
     -1
 }
 
-pub fn abort_stack_overflow(_what: c_int, ctx: &mut Ctx) {
+pub fn abort_stack_overflow(ctx: &mut Ctx, _what: c_int) {
     debug!("emscripten::abort_stack_overflow");
     // TODO: Message incomplete. Need to finish em runtime data first
     abort_with_message(
-        "Stack overflow! Attempted to allocate some bytes on the stack",
         ctx,
+        "Stack overflow! Attempted to allocate some bytes on the stack",
     );
 }
 
 pub fn _llvm_trap(ctx: &mut Ctx) {
     debug!("emscripten::_llvm_trap");
-    abort_with_message("abort!", ctx);
+    abort_with_message(ctx, "abort!");
 }
 
-pub fn _system(_one: i32, _ctx: &mut Ctx) -> c_int {
+pub fn _system(_ctx: &mut Ctx, _one: i32) -> c_int {
     debug!("emscripten::_system");
     // TODO: May need to change this Em impl to a working version
     eprintln!("Can't call external programs");
     return EAGAIN;
 }
 
-pub fn _popen(_one: i32, _two: i32, _ctx: &mut Ctx) -> c_int {
+pub fn _popen(_ctx: &mut Ctx, _one: i32, _two: i32) -> c_int {
     debug!("emscripten::_popen");
     // TODO: May need to change this Em impl to a working version
     eprintln!("Missing function: popen");
diff --git a/lib/emscripten/src/signal.rs b/lib/emscripten/src/signal.rs
index 1a6d43078..f7657630b 100644
--- a/lib/emscripten/src/signal.rs
+++ b/lib/emscripten/src/signal.rs
@@ -2,7 +2,7 @@
 use wasmer_runtime_core::vm::Ctx;
 
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _sigemptyset(set: u32, ctx: &mut Ctx) -> i32 {
+pub fn _sigemptyset(ctx: &mut Ctx, set: u32) -> i32 {
     debug!("emscripten::_sigemptyset");
     let set_addr = emscripten_memory_pointer!(ctx.memory(0), set) as *mut u32;
     unsafe {
@@ -11,13 +11,13 @@ pub fn _sigemptyset(set: u32, ctx: &mut Ctx) -> i32 {
     0
 }
 
-pub fn _sigaction(signum: u32, act: u32, oldact: u32, _ctx: &mut Ctx) -> i32 {
+pub fn _sigaction(_ctx: &mut Ctx, signum: u32, act: u32, oldact: u32) -> i32 {
     debug!("emscripten::_sigaction {}, {}, {}", signum, act, oldact);
     0
 }
 
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _sigaddset(set: u32, signum: u32, ctx: &mut Ctx) -> i32 {
+pub fn _sigaddset(ctx: &mut Ctx, set: u32, signum: u32) -> i32 {
     debug!("emscripten::_sigaddset {}, {}", set, signum);
     let set_addr = emscripten_memory_pointer!(ctx.memory(0), set) as *mut u32;
     unsafe {
@@ -26,17 +26,17 @@ pub fn _sigaddset(set: u32, signum: u32, ctx: &mut Ctx) -> i32 {
     0
 }
 
-pub fn _sigsuspend(_one: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _sigsuspend(_ctx: &mut Ctx, _one: i32) -> i32 {
     debug!("emscripten::_sigsuspend");
     -1
 }
 
-pub fn _sigprocmask(_one: i32, _two: i32, _three: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _sigprocmask(_ctx: &mut Ctx, _one: i32, _two: i32, _three: i32) -> i32 {
     debug!("emscripten::_sigprocmask");
     0
 }
 
-pub fn _signal(sig: u32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _signal(_ctx: &mut Ctx, sig: u32, _two: i32) -> i32 {
     debug!("emscripten::_signal ({})", sig);
     0
 }
diff --git a/lib/emscripten/src/syscalls/mod.rs b/lib/emscripten/src/syscalls/mod.rs
index 9078af374..c722e3a79 100644
--- a/lib/emscripten/src/syscalls/mod.rs
+++ b/lib/emscripten/src/syscalls/mod.rs
@@ -52,7 +52,7 @@ use libc::SO_NOSIGPIPE;
 const SO_NOSIGPIPE: c_int = 0;
 
 /// exit
-pub fn ___syscall1(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) {
+pub fn ___syscall1(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) {
     debug!("emscripten::___syscall1 (exit) {}", which);
     let status: i32 = varargs.get(ctx);
     unsafe {
@@ -61,7 +61,7 @@ pub fn ___syscall1(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) {
 }
 
 /// read
-pub fn ___syscall3(which: i32, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
+pub fn ___syscall3(ctx: &mut Ctx, which: i32, mut varargs: VarArgs) -> i32 {
     // -> ssize_t
     debug!("emscripten::___syscall3 (read) {}", which);
     let fd: i32 = varargs.get(ctx);
@@ -75,7 +75,7 @@ pub fn ___syscall3(which: i32, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
 }
 
 /// write
-pub fn ___syscall4(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall4(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall4 (write) {}", which);
     let fd: i32 = varargs.get(ctx);
     let buf: u32 = varargs.get(ctx);
@@ -86,7 +86,7 @@ pub fn ___syscall4(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
 }
 
 /// open
-pub fn ___syscall5(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall5(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall5 (open) {}", which);
     let pathname: u32 = varargs.get(ctx);
     let flags: i32 = varargs.get(ctx);
@@ -102,7 +102,7 @@ pub fn ___syscall5(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
 }
 
 /// close
-pub fn ___syscall6(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall6(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall6 (close) {}", which);
     let fd: i32 = varargs.get(ctx);
     debug!("fd: {}", fd);
@@ -110,7 +110,7 @@ pub fn ___syscall6(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
 }
 
 // chdir
-pub fn ___syscall12(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall12(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall12 (chdir) {}", which);
     let path_addr: i32 = varargs.get(ctx);
     unsafe {
@@ -122,42 +122,42 @@ pub fn ___syscall12(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
     }
 }
 
-pub fn ___syscall10(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall10(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall10");
     -1
 }
 
-pub fn ___syscall15(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall15(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall15");
     -1
 }
 
 // getpid
-pub fn ___syscall20(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall20(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall20 (getpid)");
     unsafe { getpid() }
 }
 
-pub fn ___syscall38(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall38(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall38");
     -1
 }
 
 // rmdir
-pub fn ___syscall40(_which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall40(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall40 (rmdir)");
     let pathname: u32 = varargs.get(ctx);
     let pathname_addr = emscripten_memory_pointer!(ctx.memory(0), pathname) as *const i8;
     unsafe { rmdir(pathname_addr) }
 }
 
-pub fn ___syscall60(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall60(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall60");
     -1
 }
 
 // dup2
-pub fn ___syscall63(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall63(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall63 (dup2) {}", which);
 
     let src: i32 = varargs.get(ctx);
@@ -167,43 +167,43 @@ pub fn ___syscall63(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // getppid
-pub fn ___syscall64(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall64(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall64 (getppid)");
     unsafe { getpid() }
 }
 
-pub fn ___syscall66(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall66(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall66");
     -1
 }
 
-pub fn ___syscall75(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall75(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall75");
     -1
 }
 
-pub fn ___syscall85(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall85(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall85");
     -1
 }
 
-pub fn ___syscall91(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall91(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall91");
     -1
 }
 
-pub fn ___syscall97(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall97(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall97");
     -1
 }
 
-pub fn ___syscall110(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall110(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall110");
     -1
 }
 
 // mmap2
-pub fn ___syscall192(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall192(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall192 (mmap2) {}", which);
     let addr: i32 = varargs.get(ctx);
     let len: u32 = varargs.get(ctx);
@@ -217,11 +217,11 @@ pub fn ___syscall192(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
     );
 
     if fd == -1 {
-        let ptr = env::call_memalign(16384, len, ctx);
+        let ptr = env::call_memalign(ctx, 16384, len);
         if ptr == 0 {
             return -1;
         }
-        env::call_memset(ptr, 0, len, ctx);
+        env::call_memset(ctx, ptr, 0, len);
         ptr as _
     } else {
         -1
@@ -229,7 +229,7 @@ pub fn ___syscall192(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 /// lseek
-pub fn ___syscall140(which: i32, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
+pub fn ___syscall140(ctx: &mut Ctx, which: i32, mut varargs: VarArgs) -> i32 {
     // -> c_int
     debug!("emscripten::___syscall140 (lseek) {}", which);
     let fd: i32 = varargs.get(ctx);
@@ -241,7 +241,7 @@ pub fn ___syscall140(which: i32, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
 
 /// readv
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall145(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
+pub fn ___syscall145(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> i32 {
     // -> ssize_t
     debug!("emscripten::___syscall145 (readv) {}", which);
     // let fd: i32 = varargs.get(ctx);
@@ -284,7 +284,7 @@ pub fn ___syscall145(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
 
 // writev
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall146(which: i32, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
+pub fn ___syscall146(ctx: &mut Ctx, which: i32, mut varargs: VarArgs) -> i32 {
     // -> ssize_t
     debug!("emscripten::___syscall146 (writev) {}", which);
     let fd: i32 = varargs.get(ctx);
@@ -318,33 +318,33 @@ pub fn ___syscall146(which: i32, mut varargs: VarArgs, ctx: &mut Ctx) -> i32 {
     }
 }
 
-pub fn ___syscall168(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall168(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall168");
     -1
 }
 
-pub fn ___syscall191(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall191(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall191 - stub");
     -1
 }
 
-pub fn ___syscall194(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall194(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall194 - stub");
     -1
 }
 
-pub fn ___syscall196(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall196(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall194 - stub");
     -1
 }
 
-pub fn ___syscall199(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall199(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall199 - stub");
     -1
 }
 
 // stat64
-pub fn ___syscall195(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall195(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall195 (stat64) {}", which);
     let pathname: u32 = varargs.get(ctx);
     let buf: u32 = varargs.get(ctx);
@@ -364,7 +364,7 @@ pub fn ___syscall195(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // fstat64
-pub fn ___syscall197(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall197(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall197 (fstat64) {}", which);
     let fd: c_int = varargs.get(ctx);
     let buf: u32 = varargs.get(ctx);
@@ -382,13 +382,13 @@ pub fn ___syscall197(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
     0
 }
 
-pub fn ___syscall220(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall220(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall220");
     -1
 }
 
 // fcntl64
-pub fn ___syscall221(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall221(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall221 (fcntl64) {}", which);
     // fcntl64
     let _fd: i32 = varargs.get(ctx);
@@ -399,33 +399,33 @@ pub fn ___syscall221(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
     }
 }
 
-pub fn ___syscall268(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall268(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall268");
     -1
 }
 
-pub fn ___syscall272(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall272(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall272");
     -1
 }
 
-pub fn ___syscall295(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall295(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall295");
     -1
 }
 
-pub fn ___syscall300(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall300(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall300");
     -1
 }
 
-pub fn ___syscall334(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall334(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall334");
     -1
 }
 
 // prlimit64
-pub fn ___syscall340(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall340(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall340 (prlimit64), {}", which);
     // NOTE: Doesn't really matter. Wasm modules cannot exceed WASM_PAGE_SIZE anyway.
     let _pid: i32 = varargs.get(ctx);
diff --git a/lib/emscripten/src/syscalls/unix.rs b/lib/emscripten/src/syscalls/unix.rs
index 1e38c39c6..c95c8c7dd 100644
--- a/lib/emscripten/src/syscalls/unix.rs
+++ b/lib/emscripten/src/syscalls/unix.rs
@@ -77,7 +77,7 @@ use libc::SO_NOSIGPIPE;
 const SO_NOSIGPIPE: c_int = 0;
 
 // chown
-pub fn ___syscall212(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall212(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall212 (chown) {}", which);
 
     let pathname: u32 = varargs.get(ctx);
@@ -90,7 +90,7 @@ pub fn ___syscall212(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // mkdir
-pub fn ___syscall39(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall39(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall39 (mkdir) {}", which);
     let pathname: u32 = varargs.get(ctx);
     let mode: u32 = varargs.get(ctx);
@@ -99,7 +99,7 @@ pub fn ___syscall39(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // getgid
-pub fn ___syscall201(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall201(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall201 (getgid)");
     unsafe {
         // Maybe fix: Emscripten returns 0 always
@@ -108,7 +108,7 @@ pub fn ___syscall201(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
 }
 
 // getgid32
-pub fn ___syscall202(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall202(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     // gid_t
     debug!("emscripten::___syscall202 (getgid32)");
     unsafe {
@@ -118,7 +118,7 @@ pub fn ___syscall202(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
 }
 
 /// dup3
-pub fn ___syscall330(_which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> pid_t {
+pub fn ___syscall330(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_t {
     // Implementation based on description at https://linux.die.net/man/2/dup3
     debug!("emscripten::___syscall330 (dup3)");
     let oldfd: c_int = varargs.get(ctx);
@@ -152,7 +152,7 @@ pub fn ___syscall330(_which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> pid_
 }
 
 /// ioctl
-pub fn ___syscall54(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall54(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall54 (ioctl) {}", which);
     let fd: i32 = varargs.get(ctx);
     let request: u32 = varargs.get(ctx);
@@ -195,7 +195,7 @@ pub fn ___syscall54(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 
 // socketcall
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall102(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall102(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall102 (socketcall) {}", which);
     let call: u32 = varargs.get(ctx);
     let mut socket_varargs: VarArgs = varargs.get(ctx);
@@ -447,7 +447,7 @@ pub fn ___syscall102(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // pread
-pub fn ___syscall180(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall180(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall180 (pread) {}", which);
     let fd: i32 = varargs.get(ctx);
     let buf: u32 = varargs.get(ctx);
@@ -464,7 +464,7 @@ pub fn ___syscall180(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // pwrite
-pub fn ___syscall181(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall181(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall181 (pwrite) {}", which);
     let fd: i32 = varargs.get(ctx);
     let buf: u32 = varargs.get(ctx);
@@ -486,7 +486,7 @@ pub fn ___syscall181(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 
 /// wait4
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall114(_which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> pid_t {
+pub fn ___syscall114(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_t {
     debug!("emscripten::___syscall114 (wait4)");
     let pid: pid_t = varargs.get(ctx);
     let status: u32 = varargs.get(ctx);
@@ -504,7 +504,7 @@ pub fn ___syscall114(_which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> pid_
 
 // select
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall142(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall142(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall142 (newselect) {}", which);
 
     let nfds: i32 = varargs.get(ctx);
@@ -523,7 +523,7 @@ pub fn ___syscall142(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // setpgid
-pub fn ___syscall57(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall57(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall57 (setpgid) {}", which);
     let pid: i32 = varargs.get(ctx);
     let pgid: i32 = varargs.get(ctx);
@@ -532,7 +532,7 @@ pub fn ___syscall57(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 
 /// uname
 // NOTE: Wondering if we should return custom utsname, like Emscripten.
-pub fn ___syscall122(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall122(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall122 (uname) {}", which);
     let buf: u32 = varargs.get(ctx);
     debug!("=> buf: {}", buf);
diff --git a/lib/emscripten/src/syscalls/windows.rs b/lib/emscripten/src/syscalls/windows.rs
index 2b577fcac..41c4cf7eb 100644
--- a/lib/emscripten/src/syscalls/windows.rs
+++ b/lib/emscripten/src/syscalls/windows.rs
@@ -6,13 +6,13 @@ use wasmer_runtime_core::vm::Ctx;
 type pid_t = c_int;
 
 // chown
-pub fn ___syscall212(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall212(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall212 (chown) {}", which);
     -1
 }
 
 // mkdir
-pub fn ___syscall39(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall39(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall39 (mkdir) {}", which);
     let pathname: u32 = varargs.get(ctx);
     let mode: u32 = varargs.get(ctx);
@@ -21,72 +21,72 @@ pub fn ___syscall39(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int
 }
 
 // getgid
-pub fn ___syscall201(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall201(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall201 (getgid)");
     -1
 }
 
 // getgid32
-pub fn ___syscall202(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn ___syscall202(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     // gid_t
     debug!("emscripten::___syscall202 (getgid32)");
     -1
 }
 
 /// dup3
-pub fn ___syscall330(_which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> pid_t {
+pub fn ___syscall330(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_t {
     debug!("emscripten::___syscall330 (dup3)");
     -1
 }
 
 /// ioctl
-pub fn ___syscall54(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall54(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall54 (ioctl) {}", which);
     -1
 }
 
 // socketcall
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall102(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall102(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall102 (socketcall) {}", which);
     -1
 }
 
 // pread
-pub fn ___syscall180(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall180(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall180 (pread) {}", which);
     -1
 }
 
 // pwrite
-pub fn ___syscall181(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall181(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall181 (pwrite) {}", which);
     -1
 }
 
 /// wait4
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall114(_which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> pid_t {
+pub fn ___syscall114(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> pid_t {
     debug!("emscripten::___syscall114 (wait4)");
     -1
 }
 
 // select
 #[allow(clippy::cast_ptr_alignment)]
-pub fn ___syscall142(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall142(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall142 (newselect) {}", which);
     -1
 }
 
 // setpgid
-pub fn ___syscall57(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall57(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall57 (setpgid) {}", which);
     -1
 }
 
 /// uname
 // NOTE: Wondering if we should return custom utsname, like Emscripten.
-pub fn ___syscall122(which: c_int, mut varargs: VarArgs, ctx: &mut Ctx) -> c_int {
+pub fn ___syscall122(ctx: &mut Ctx, which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall122 (uname) {}", which);
     -1
 }
diff --git a/lib/emscripten/src/time.rs b/lib/emscripten/src/time.rs
index c270e1785..7efb22e15 100644
--- a/lib/emscripten/src/time.rs
+++ b/lib/emscripten/src/time.rs
@@ -41,7 +41,7 @@ const CLOCK_MONOTONIC_COARSE: clockid_t = 6;
 
 /// emscripten: _gettimeofday
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _gettimeofday(tp: c_int, tz: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _gettimeofday(ctx: &mut Ctx, tp: c_int, tz: c_int) -> c_int {
     debug!("emscripten::_gettimeofday {} {}", tp, tz);
     #[repr(C)]
     struct GuestTimeVal {
@@ -66,7 +66,7 @@ pub fn _gettimeofday(tp: c_int, tz: c_int, ctx: &mut Ctx) -> c_int {
 
 /// emscripten: _clock_gettime
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _clock_gettime(clk_id: clockid_t, tp: c_int, ctx: &mut Ctx) -> c_int {
+pub fn _clock_gettime(ctx: &mut Ctx, clk_id: clockid_t, tp: c_int) -> c_int {
     debug!("emscripten::_clock_gettime {} {}", clk_id, tp);
     // debug!("Memory {:?}", ctx.memory(0)[..]);
     #[repr(C)]
@@ -97,9 +97,9 @@ pub fn _clock_gettime(clk_id: clockid_t, tp: c_int, ctx: &mut Ctx) -> c_int {
 }
 
 /// emscripten: ___clock_gettime
-pub fn ___clock_gettime(clk_id: clockid_t, tp: c_int, ctx: &mut Ctx) -> c_int {
+pub fn ___clock_gettime(ctx: &mut Ctx, clk_id: clockid_t, tp: c_int) -> c_int {
     debug!("emscripten::___clock_gettime {} {}", clk_id, tp);
-    _clock_gettime(clk_id, tp, ctx)
+    _clock_gettime(ctx, clk_id, tp)
 }
 
 /// emscripten: _clock
@@ -109,22 +109,22 @@ pub fn _clock(_ctx: &mut Ctx) -> c_int {
 }
 
 /// emscripten: _difftime
-pub fn _difftime(t0: u32, t1: u32, _ctx: &mut Ctx) -> f64 {
+pub fn _difftime(_ctx: &mut Ctx, t0: u32, t1: u32) -> f64 {
     debug!("emscripten::_difftime");
     (t0 - t1) as _
 }
 
-pub fn _gmtime_r(_one: i32, _two: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _gmtime_r(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::_gmtime_r");
     -1
 }
 
-pub fn _mktime(_one: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _mktime(_ctx: &mut Ctx, _one: i32) -> i32 {
     debug!("emscripten::_mktime");
     -1
 }
 
-pub fn _gmtime(_one: i32, _ctx: &mut Ctx) -> i32 {
+pub fn _gmtime(_ctx: &mut Ctx, _one: i32) -> i32 {
     debug!("emscripten::_gmtime");
     -1
 }
@@ -151,7 +151,7 @@ pub fn _tvset(_ctx: &mut Ctx) {
 
 /// formats time as a C string
 #[allow(clippy::cast_ptr_alignment)]
-unsafe fn fmt_time(time: u32, ctx: &mut Ctx) -> *const c_char {
+unsafe fn fmt_time(ctx: &mut Ctx, time: u32) -> *const c_char {
     let date = &*(emscripten_memory_pointer!(ctx.memory(0), time) as *mut guest_tm);
 
     let days = vec!["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
@@ -176,11 +176,11 @@ unsafe fn fmt_time(time: u32, ctx: &mut Ctx) -> *const c_char {
 }
 
 /// emscripten: _asctime
-pub fn _asctime(time: u32, ctx: &mut Ctx) -> u32 {
+pub fn _asctime(ctx: &mut Ctx, time: u32) -> u32 {
     debug!("emscripten::_asctime {}", time);
 
     unsafe {
-        let time_str_ptr = fmt_time(time, ctx);
+        let time_str_ptr = fmt_time(ctx, time);
         copy_cstr_into_wasm(ctx, time_str_ptr)
 
         // let c_str = emscripten_memory_pointer!(ctx.memory(0), res) as *mut i8;
@@ -190,7 +190,7 @@ pub fn _asctime(time: u32, ctx: &mut Ctx) -> u32 {
 }
 
 /// emscripten: _asctime_r
-pub fn _asctime_r(time: u32, buf: u32, ctx: &mut Ctx) -> u32 {
+pub fn _asctime_r(ctx: &mut Ctx, time: u32, buf: u32) -> u32 {
     debug!("emscripten::_asctime_r {}, {}", time, buf);
 
     unsafe {
@@ -198,8 +198,8 @@ pub fn _asctime_r(time: u32, buf: u32, ctx: &mut Ctx) -> u32 {
         //      to write out more than 26 bytes (including the null terminator).
         //      See http://pubs.opengroup.org/onlinepubs/9699919799/functions/asctime.html
         //      Our undefined behavior is to truncate the write to at most 26 bytes, including null terminator.
-        let time_str_ptr = fmt_time(time, ctx);
-        write_to_buf(time_str_ptr, buf, 26, ctx)
+        let time_str_ptr = fmt_time(ctx, time);
+        write_to_buf(ctx, time_str_ptr, buf, 26)
 
         // let c_str = emscripten_memory_pointer!(ctx.memory(0), res) as *mut i8;
         // use std::ffi::CStr;
@@ -209,7 +209,7 @@ pub fn _asctime_r(time: u32, buf: u32, ctx: &mut Ctx) -> u32 {
 
 /// emscripten: _localtime
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _localtime(time_p: u32, ctx: &mut Ctx) -> c_int {
+pub fn _localtime(ctx: &mut Ctx, time_p: u32) -> c_int {
     debug!("emscripten::_localtime {}", time_p);
     // NOTE: emscripten seems to want tzset() called in this function
     //      https://stackoverflow.com/questions/19170721/real-time-awareness-of-timezone-change-in-localtime-vs-localtime-r
@@ -222,7 +222,7 @@ pub fn _localtime(time_p: u32, ctx: &mut Ctx) -> c_int {
     let result_tm = time::at(timespec);
 
     unsafe {
-        let tm_struct_offset = env::call_malloc(mem::size_of::<guest_tm>() as _, ctx);
+        let tm_struct_offset = env::call_malloc(ctx, mem::size_of::<guest_tm>() as _);
         let tm_struct_ptr =
             emscripten_memory_pointer!(ctx.memory(0), tm_struct_offset) as *mut guest_tm;
         // debug!(
@@ -247,7 +247,7 @@ pub fn _localtime(time_p: u32, ctx: &mut Ctx) -> c_int {
 }
 /// emscripten: _localtime_r
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _localtime_r(time_p: u32, result: u32, ctx: &mut Ctx) -> c_int {
+pub fn _localtime_r(ctx: &mut Ctx, time_p: u32, result: u32) -> c_int {
     debug!("emscripten::_localtime_r {}", time_p);
 
     // NOTE: emscripten seems to want tzset() called in this function
@@ -284,7 +284,7 @@ pub fn _localtime_r(time_p: u32, result: u32, ctx: &mut Ctx) -> c_int {
 
 /// emscripten: _time
 #[allow(clippy::cast_ptr_alignment)]
-pub fn _time(time_p: u32, ctx: &mut Ctx) -> i32 {
+pub fn _time(ctx: &mut Ctx, time_p: u32) -> i32 {
     debug!("emscripten::_time {}", time_p);
 
     unsafe {
@@ -295,11 +295,11 @@ pub fn _time(time_p: u32, ctx: &mut Ctx) -> i32 {
 
 /// emscripten: _strftime
 pub fn _strftime(
+    _ctx: &mut Ctx,
     s_ptr: c_int,
     maxsize: u32,
     format_ptr: c_int,
     tm_ptr: c_int,
-    _ctx: &mut Ctx,
 ) -> i32 {
     debug!(
         "emscripten::_strftime {} {} {} {}",
diff --git a/lib/emscripten/src/utils.rs b/lib/emscripten/src/utils.rs
index 4437f6262..82ab0f251 100644
--- a/lib/emscripten/src/utils.rs
+++ b/lib/emscripten/src/utils.rs
@@ -40,7 +40,7 @@ pub fn get_emscripten_memory_size(module: &Module) -> (Pages, Option<Pages>) {
     (memory.minimum, memory.maximum)
 }
 
-pub unsafe fn write_to_buf(string: *const c_char, buf: u32, max: u32, ctx: &mut Ctx) -> u32 {
+pub unsafe fn write_to_buf(ctx: &mut Ctx, string: *const c_char, buf: u32, max: u32) -> u32 {
     let buf_addr = emscripten_memory_pointer!(ctx.memory(0), buf) as *mut c_char;
 
     for i in 0..max {
@@ -54,7 +54,7 @@ pub unsafe fn write_to_buf(string: *const c_char, buf: u32, max: u32, ctx: &mut
 pub unsafe fn copy_cstr_into_wasm(ctx: &mut Ctx, cstr: *const c_char) -> u32 {
     let s = CStr::from_ptr(cstr).to_str().unwrap();
     let cstr_len = s.len();
-    let space_offset = env::call_malloc((cstr_len as u32) + 1, ctx);
+    let space_offset = env::call_malloc(ctx, (cstr_len as u32) + 1);
     let raw_memory = emscripten_memory_pointer!(ctx.memory(0), space_offset) as *mut c_char;
     let slice = slice::from_raw_parts_mut(raw_memory, cstr_len);
 
@@ -69,7 +69,7 @@ pub unsafe fn copy_cstr_into_wasm(ctx: &mut Ctx, cstr: *const c_char) -> u32 {
     space_offset
 }
 
-pub unsafe fn allocate_on_stack<'a, T: Copy>(count: u32, ctx: &'a mut Ctx) -> (u32, &'a mut [T]) {
+pub unsafe fn allocate_on_stack<'a, T: Copy>(ctx: &'a mut Ctx, count: u32) -> (u32, &'a mut [T]) {
     let offset = get_emscripten_data(ctx)
         .stack_alloc
         .call(count * (size_of::<T>() as u32))
@@ -80,8 +80,8 @@ pub unsafe fn allocate_on_stack<'a, T: Copy>(count: u32, ctx: &'a mut Ctx) -> (u
     (offset, slice)
 }
 
-pub unsafe fn allocate_cstr_on_stack<'a>(s: &str, ctx: &'a mut Ctx) -> (u32, &'a [u8]) {
-    let (offset, slice) = allocate_on_stack((s.len() + 1) as u32, ctx);
+pub unsafe fn allocate_cstr_on_stack<'a>(ctx: &'a mut Ctx, s: &str) -> (u32, &'a [u8]) {
+    let (offset, slice) = allocate_on_stack(ctx, (s.len() + 1) as u32);
 
     use std::iter;
     for (byte, loc) in s.bytes().chain(iter::once(0)).zip(slice.iter_mut()) {
diff --git a/lib/runtime-core/src/import.rs b/lib/runtime-core/src/import.rs
index cf833ec6e..7073a5ac1 100644
--- a/lib/runtime-core/src/import.rs
+++ b/lib/runtime-core/src/import.rs
@@ -32,7 +32,7 @@ impl IsExport for Export {
 ///     },
 /// };
 ///
-/// fn foo(n: i32, _: &mut Ctx) -> i32 {
+/// fn foo(_: &mut Ctx, n: i32) -> i32 {
 ///     n
 /// }
 /// ```
diff --git a/lib/runtime-core/src/macros.rs b/lib/runtime-core/src/macros.rs
index 620f65046..a7bdff1b0 100644
--- a/lib/runtime-core/src/macros.rs
+++ b/lib/runtime-core/src/macros.rs
@@ -38,7 +38,7 @@ macro_rules! func {
 ///     },
 /// };
 ///
-/// fn foo(n: i32, _: &mut Ctx) -> i32 {
+/// fn foo(_: &mut Ctx, n: i32) -> i32 {
 ///     n
 /// }
 /// ```
diff --git a/lib/runtime-core/src/typed_func.rs b/lib/runtime-core/src/typed_func.rs
index 9cbcdc911..e16307d8e 100644
--- a/lib/runtime-core/src/typed_func.rs
+++ b/lib/runtime-core/src/typed_func.rs
@@ -138,9 +138,9 @@ impl<A: WasmExternType> WasmTypeList for (A,) {
     }
     #[allow(non_snake_case)]
     unsafe fn call<Rets: WasmTypeList>(self, f: *const (), ctx: *mut Ctx) -> Rets {
-        let f: extern "C" fn(A, *mut Ctx) -> Rets = mem::transmute(f);
+        let f: extern "C" fn(*mut Ctx, A) -> Rets = mem::transmute(f);
         let (a,) = self;
-        f(a, ctx)
+        f(ctx, a)
     }
 }
 
@@ -175,24 +175,24 @@ macro_rules! impl_traits {
             }
             #[allow(non_snake_case)]
             unsafe fn call<Rets: WasmTypeList>(self, f: *const (), ctx: *mut Ctx) -> Rets {
-                let f: extern fn( $( $x, )* *mut Ctx) -> Rets::CStruct = mem::transmute(f);
+                let f: extern fn(*mut Ctx $( ,$x )*) -> Rets::CStruct = mem::transmute(f);
                 #[allow(unused_parens)]
                 let ( $( $x ),* ) = self;
-                let c_struct = f( $( $x, )* ctx);
+                let c_struct = f(ctx $( ,$x )*);
                 Rets::from_c_struct(c_struct)
             }
         }
 
-        impl< $( $x: WasmExternType, )* Rets: WasmTypeList, Trap: TrapEarly<Rets>, FN: Fn( $( $x, )* &mut Ctx) -> Trap> ExternalFunction<($( $x ),*), Rets> for FN {
+        impl< $( $x: WasmExternType, )* Rets: WasmTypeList, Trap: TrapEarly<Rets>, FN: Fn( &mut Ctx $( ,$x )* ) -> Trap> ExternalFunction<($( $x ),*), Rets> for FN {
             #[allow(non_snake_case)]
             fn to_raw(&self) -> *const () {
                 assert_eq!(mem::size_of::<Self>(), 0, "you cannot use a closure that captures state for `Func`.");
 
-                extern fn wrap<$( $x: WasmExternType, )* Rets: WasmTypeList, Trap: TrapEarly<Rets>, FN: Fn( $( $x, )* &mut Ctx) -> Trap>( $( $x: $x, )* ctx: &mut Ctx) -> Rets::CStruct {
+                extern fn wrap<$( $x: WasmExternType, )* Rets: WasmTypeList, Trap: TrapEarly<Rets>, FN: Fn( &mut Ctx $( ,$x )* ) -> Trap>( ctx: &mut Ctx $( ,$x: $x )* ) -> Rets::CStruct {
                     let f: FN = unsafe { mem::transmute_copy(&()) };
 
                     let msg = match panic::catch_unwind(panic::AssertUnwindSafe(|| {
-                        f( $( $x, )* ctx).report()
+                        f( ctx $( ,$x )* ).report()
                     })) {
                         Ok(Ok(returns)) => return returns.into_c_struct(),
                         Ok(Err(err)) => err,
@@ -271,7 +271,7 @@ mod tests {
     use super::*;
     #[test]
     fn test_call() {
-        fn foo(a: i32, b: i32, _ctx: &mut Ctx) -> (i32, i32) {
+        fn foo(_ctx: &mut Ctx, a: i32, b: i32) -> (i32, i32) {
             (a, b)
         }
 
@@ -282,7 +282,7 @@ mod tests {
     fn test_imports() {
         use crate::{func, imports};
 
-        fn foo(a: i32, _ctx: &mut Ctx) -> i32 {
+        fn foo(_ctx: &mut Ctx, a: i32) -> i32 {
             a
         }
 
diff --git a/lib/runtime-core/src/vmcalls.rs b/lib/runtime-core/src/vmcalls.rs
index 8a6e683b5..576ca34ce 100644
--- a/lib/runtime-core/src/vmcalls.rs
+++ b/lib/runtime-core/src/vmcalls.rs
@@ -13,9 +13,9 @@ use crate::{
 // +****************************+
 
 pub unsafe extern "C" fn local_static_memory_grow(
+    ctx: &mut vm::Ctx,
     memory_index: LocalMemoryIndex,
     delta: Pages,
-    ctx: &mut vm::Ctx,
 ) -> i32 {
     let local_memory = *ctx.memories.add(memory_index.index());
     let memory = (*local_memory).memory as *mut StaticMemory;
@@ -28,8 +28,8 @@ pub unsafe extern "C" fn local_static_memory_grow(
 }
 
 pub unsafe extern "C" fn local_static_memory_size(
-    memory_index: LocalMemoryIndex,
     ctx: &vm::Ctx,
+    memory_index: LocalMemoryIndex,
 ) -> Pages {
     let local_memory = *ctx.memories.add(memory_index.index());
     let memory = (*local_memory).memory as *mut StaticMemory;
@@ -38,9 +38,9 @@ pub unsafe extern "C" fn local_static_memory_size(
 }
 
 pub unsafe extern "C" fn local_dynamic_memory_grow(
+    ctx: &mut vm::Ctx,
     memory_index: LocalMemoryIndex,
     delta: Pages,
-    ctx: &mut vm::Ctx,
 ) -> i32 {
     let local_memory = *ctx.memories.add(memory_index.index());
     let memory = (*local_memory).memory as *mut DynamicMemory;
@@ -53,8 +53,8 @@ pub unsafe extern "C" fn local_dynamic_memory_grow(
 }
 
 pub unsafe extern "C" fn local_dynamic_memory_size(
-    memory_index: LocalMemoryIndex,
     ctx: &vm::Ctx,
+    memory_index: LocalMemoryIndex,
 ) -> Pages {
     let local_memory = *ctx.memories.add(memory_index.index());
     let memory = (*local_memory).memory as *mut DynamicMemory;
@@ -67,9 +67,9 @@ pub unsafe extern "C" fn local_dynamic_memory_size(
 // +****************************+
 
 pub unsafe extern "C" fn imported_static_memory_grow(
+    ctx: &mut vm::Ctx,
     import_memory_index: ImportedMemoryIndex,
     delta: Pages,
-    ctx: &mut vm::Ctx,
 ) -> i32 {
     let local_memory = *ctx.imported_memories.add(import_memory_index.index());
     let memory = (*local_memory).memory as *mut StaticMemory;
@@ -82,8 +82,8 @@ pub unsafe extern "C" fn imported_static_memory_grow(
 }
 
 pub unsafe extern "C" fn imported_static_memory_size(
-    import_memory_index: ImportedMemoryIndex,
     ctx: &vm::Ctx,
+    import_memory_index: ImportedMemoryIndex,
 ) -> Pages {
     let local_memory = *ctx.imported_memories.add(import_memory_index.index());
     let memory = (*local_memory).memory as *mut StaticMemory;
@@ -92,9 +92,9 @@ pub unsafe extern "C" fn imported_static_memory_size(
 }
 
 pub unsafe extern "C" fn imported_dynamic_memory_grow(
+    ctx: &mut vm::Ctx,
     memory_index: ImportedMemoryIndex,
     delta: Pages,
-    ctx: &mut vm::Ctx,
 ) -> i32 {
     let local_memory = *ctx.imported_memories.add(memory_index.index());
     let memory = (*local_memory).memory as *mut DynamicMemory;
@@ -107,8 +107,8 @@ pub unsafe extern "C" fn imported_dynamic_memory_grow(
 }
 
 pub unsafe extern "C" fn imported_dynamic_memory_size(
-    memory_index: ImportedMemoryIndex,
     ctx: &vm::Ctx,
+    memory_index: ImportedMemoryIndex,
 ) -> Pages {
     let local_memory = *ctx.imported_memories.add(memory_index.index());
     let memory = (*local_memory).memory as *mut DynamicMemory;
@@ -121,9 +121,9 @@ pub unsafe extern "C" fn imported_dynamic_memory_size(
 // +****************************+
 
 pub unsafe extern "C" fn local_table_grow(
+    ctx: &mut vm::Ctx,
     table_index: LocalTableIndex,
     delta: u32,
-    ctx: &mut vm::Ctx,
 ) -> i32 {
     let _ = table_index;
     let _ = delta;
@@ -131,7 +131,7 @@ pub unsafe extern "C" fn local_table_grow(
     unimplemented!()
 }
 
-pub unsafe extern "C" fn local_table_size(table_index: LocalTableIndex, ctx: &vm::Ctx) -> u32 {
+pub unsafe extern "C" fn local_table_size(ctx: &vm::Ctx, table_index: LocalTableIndex) -> u32 {
     let _ = table_index;
     let _ = ctx;
     unimplemented!()
diff --git a/lib/spectests/examples/simple/main.rs b/lib/spectests/examples/simple/main.rs
index fb215ee21..e418c9abe 100644
--- a/lib/spectests/examples/simple/main.rs
+++ b/lib/spectests/examples/simple/main.rs
@@ -61,7 +61,7 @@ fn main() -> error::Result<()> {
     Ok(())
 }
 
-fn print_num(n: i32, ctx: &mut vm::Ctx) -> Result<i32, ()> {
+fn print_num(ctx: &mut vm::Ctx, n: i32) -> Result<i32, ()> {
     println!("print_num({})", n);
 
     let memory: &Memory = ctx.memory(0);