Added ___syscall57 emscripten syscall

src/apis/emscripten/mod.rs

@@ -271,6 +271,11 @@ pub fn generate_emscripten_env<'a, 'b>() -> ImportObject<&'a str, &'b str> {
         "___syscall142",
         ImportValue::Func(syscalls::___syscall142 as _),
     );
+    import_object.set(
+        "env",
+        "___syscall57",
+        ImportValue::Func(syscalls::___syscall57 as _),
+    );
 
     // Process
     import_object.set("env", "abort", ImportValue::Func(process::em_abort as _));

src/apis/emscripten/syscalls.rs

@@ -52,6 +52,7 @@ use libc::{
     writev,
     select,
     FIONBIO,
+    setpgid,
 };
 
 /// exit
@@ -728,4 +729,18 @@ pub extern "C" fn ___syscall142(
     let writefds_ptr = instance.memory_offset_addr(0, writefds as _) as _;
     
     unsafe { select(nfds, readfds_ptr, writefds_ptr, 0 as _, 0 as _) }
-}
+}
+
+// setpgid
+pub extern "C" fn ___syscall57(
+    _which: c_int,
+    mut varargs: VarArgs,
+    instance: &mut Instance,
+) -> c_int {
+    debug!("emscripten::___syscall57 (setpgid)");
+    let pid: i32 = varargs.get(instance);
+    let pgid: i32 = varargs.get(instance);
+    unsafe {
+        setpgid(pid, pgid)
+    }
+}