push

src/main.rs

@@ -1,19 +1,19 @@
-extern crate wabt;
-extern crate wasmi;
-
+use wabt;
 use wasmi::{
     Error, Externals, FuncInstance, FuncRef, ImportsBuilder, ModuleImportResolver, ModuleInstance,
     RuntimeArgs, RuntimeValue, Signature, Trap, ValueType,
 };
 
+mod wasm_sys;
+use wasm_sys::SysCall;
+
 pub const KILL: usize = 0;
-pub const ADD_FUNC_INDEX: usize = 1;
 
 struct HostFunctions;
 impl HostFunctions {
     fn check_signature(&self, index: usize, signature: &Signature) -> bool {
         let (params, ret_ty): (&[ValueType], Option<ValueType>) = match index {
-         ADD_FUNC_INDEX => (&[ValueType::I32, ValueType::I32], Some(ValueType::I32)),
+            *SysCall::KILL => (&[ValueType::I32, ValueType::I32], Some(ValueType::I32)),
             _ => return false,
         };
         signature.params() == params && signature.return_type() == ret_ty
@@ -27,8 +27,7 @@ impl Externals for HostFunctions {
         args: RuntimeArgs,
     ) -> Result<Option<RuntimeValue>, Trap> {
         match index {
-         ADD_FUNC_INDEX => {
-            println!("you pe");
+            SysCall::KILL => {
                 let a: u32 = args.nth_checked(0)?;
                 let b: u32 = args.nth_checked(1)?;
                 let result = a + b;
@@ -42,7 +41,7 @@ impl Externals for HostFunctions {
 impl ModuleImportResolver for HostFunctions {
     fn resolve_func(&self, field_name: &str, signature: &Signature) -> Result<FuncRef, Error> {
         let index = match field_name {
-         "add" => ADD_FUNC_INDEX,
+            "add" => SysCall::KILL,
             _ => {
                 return Err(Error::Instantiation(format!(
                     "Export {} not found",
@@ -67,7 +66,7 @@ impl ModuleImportResolver for HostFunctions {
 
 fn main() {
     // Parse WAT (WebAssembly Text format) into wasm bytecode.
-   let wasm_binary = wabt::wat2wasm(include_str!("test.wat"));
+    let wasm_binary = wabt::wat2wasm(include_str!("../wasm/test.wat"));
 
     let wasm_binary = match wasm_binary {
         Ok(abc) => abc,

src/test.wat

@@ -1,16 +0,0 @@
-(module
-      (import "host" "add" (func $add (param i32 i32)(result i32)))
-      (func (export "main") (result i32)
-      (call $add (i32.const 123) (i32.const 456))
-      (; i32.const 1337 ;)
-      )
-)
-
-
-
-(;;
-(func $main (export "_start")
-        (; (call $print_greeting) ;)
-        return
-    )
-;;)

src/wasm_sys.rs

@@ -0,0 +1,36 @@
+#[repr(usize)]
+pub enum SysCall {
+    KILL = 0,              // Provide a PID
+    CONSOLE_RESET = 1,     // Reset the console
+    CONSOLE_IN = 2,        // Console Input
+    CONSOLE_OUT = 3,       // Console output
+    CONSOLE_GET_TITLE = 4, // Get the console title
+    CONSOLE_SET_TITLE = 5, // Set the console title
+
+    //scheduler Related Syscals
+    GET_PRIORITY = 10, // Get scheduler priority
+    SET_PRIORITY = 11, // Set scheduler priority
+    //
+    GET_HOSTNAME = 12,
+    SET_HOSTNAME = 13,
+
+    //File Related syscalls
+    GET_CONFIG = 20, // Get config
+    SET_CONFIG = 21, // Set the config
+    //
+    MAKE_DIRECTORY = 22,       //
+    DELETE_DIRECTORY = 23,     //
+    RENAME_DIRECTORY = 24,     //
+    SET_DIRECTORY_ACCESS = 25, //
+    //
+    MAKE_FILE = 26,       //
+    DELETE_FILE = 27,     //
+    RENAME_FILE = 28,     //
+    SET_FILE_ACCESS = 29, //
+
+    FILE_READ = 30,
+    FILE_WRITE = 31,
+
+    // Security Syscalls
+    ENCRYPT = 50,
+}

wasm/test.wat

@@ -0,0 +1,6 @@
+(module
+      (import "host" "add" (func $add (param i32 i32)(result i32)))
+      (func (export "main") (result i32)
+            (call $add (i32.const 123) (i32.const 456))
+      )
+)