Add several more syscalls

src/apis/emscripten/env.rs

@@ -8,7 +8,6 @@ use libc::{
 use std::ffi::CStr;
 use std::os::raw::c_char;
 use std::{slice, mem};
-use std::time::SystemTime;
 
 use crate::webassembly::Instance;
 <<<<<<< HEAD
@@ -114,3 +113,7 @@ pub extern fn _localtime_r() -> u32 {
 pub extern fn _getpagesize() -> u32 {
     LinearMemory::PAGE_SIZE
 }
+
+pub extern fn _prlimit(pid: c_int, resource: c_int, new_limit: c_int, old_limit: c_int, instance: &mut Instance) -> c_int {
+    0
+}

src/apis/emscripten/memory.rs

@@ -21,7 +21,8 @@ pub extern "C" fn _emscripten_memcpy_big(
 /// emscripten: getTotalMemory
 pub extern "C" fn get_total_memory(instance: &mut Instance) -> u32 {
     debug!("emscripten::get_total_memory");
-    instance.memories[0].current_pages()
+    // instance.memories[0].current_pages()
+    16777216
 }
 
 /// emscripten: enlargeMemory

src/apis/emscripten/mod.rs

@@ -57,9 +57,9 @@ pub fn emscripten_set_up_memory(memory: &mut LinearMemory) {
 
 macro_rules! mock_external {
     ($import:ident, $name:ident) => {{
-        fn _mocked_fn() -> i32 {
+        extern fn _mocked_fn() -> i32 {
             println!("emscripten::{} <mock>", stringify!($name));
-            0
+            -1
         }
         $import.set(
             "env",
@@ -293,7 +293,7 @@ pub fn generate_emscripten_env<'a, 'b>() -> ImportObject<&'a str, &'b str> {
     import_object.set(
         "env",
         "_clock_gettime",
-        ImportValue::Func(env::_clock_gettime as _),
+        ImportValue::Func(time::_clock_gettime as _),
     );
     import_object.set(
         "env",

src/apis/emscripten/time.rs

@@ -1,5 +1,5 @@
-use libc::{gettimeofday, timeval, c_int, clock_gettime, clockid_t, timespec};
-use std::ptr;
+use libc::{timeval, c_int, clock_gettime as libc_clock_gettime, timespec};
+use std::time::SystemTime;
 
 use crate::webassembly::Instance;