remove leading underscores from execvp and exit

lib/emscripten/src/exec.rs

@@ -1,9 +1,9 @@
-use libc::execvp;
+use libc::execvp as libc_execvp;
 use std::cell::Cell;
 use std::ffi::CString;
 use wasmer_runtime_core::vm::Ctx;
 
-pub fn _execvp(ctx: &mut Ctx, command_name_offset: u32, argv_offset: u32) -> i32 {
+pub fn execvp(ctx: &mut Ctx, command_name_offset: u32, argv_offset: u32) -> i32 {
     // a single reference to re-use
     let emscripten_memory = ctx.memory(0);
 
@@ -36,5 +36,5 @@ pub fn _execvp(ctx: &mut Ctx, command_name_offset: u32, argv_offset: u32) -> i32
     // construct raw pointers and hand them to `execvp`
     let command_pointer = command_name_string.as_ptr() as *const i8;
     let args_pointer = argv.as_ptr();
-    unsafe { execvp(command_pointer, args_pointer) }
+    unsafe { libc_execvp(command_pointer, args_pointer) }
 }

lib/emscripten/src/exit.rs

@@ -1,7 +1,7 @@
 use wasmer_runtime_core::vm::Ctx;
 
 // __exit
-pub fn __exit(_ctx: &mut Ctx, value: i32) {
+pub fn exit(_ctx: &mut Ctx, value: i32) {
-    debug!("emscripten::__exit {}", value);
+    debug!("emscripten::exit {}", value);
     ::std::process::exit(value);
 }

lib/emscripten/src/lib.rs

@@ -442,10 +442,10 @@ pub fn generate_emscripten_env(globals: &mut EmscriptenGlobals) -> ImportObject
             "___wait" => func!(crate::lock::___wait),
 
             // exec
-            "_execvp" => func!(crate::exec::_execvp),
+            "_execvp" => func!(crate::exec::execvp),
 
             // exit
-            "__exit" => func!(crate::exit::__exit),
+            "__exit" => func!(crate::exit::exit),
 
             // Env
             "___assert_fail" => func!(crate::env::___assert_fail),