provide a simple wasm executable for ableOS

Cargo.lock

@@ -492,6 +492,10 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "wasm_syscall_test"
+version = "0.1.0"
+
 [[package]]
 name = "wat2wasm"
 version = "0.1.0"

Cargo.toml

@@ -37,6 +37,7 @@ members = [
     "programs/shell",
     "programs/table_view",
     "programs/undelete",
+    "programs/wasm_syscall_test",
     "programs/wat2wasm",
     "programs/xml_tests",
 

libraries/xml/src/lib.rs

@@ -9,6 +9,7 @@ use alloc::string::{String, ToString};
 use alloc::vec::Vec;
 
 use serde::{Deserialize, Serialize};
+
 #[derive(PartialEq, Clone, Debug, Serialize, Deserialize)]
 
 pub struct Attribute {

programs/wasm_syscall_test/.cargo/config.toml

@@ -0,0 +1,6 @@
+# [unstable]
+# build-std = ["core", "compiler_builtins", "alloc"]
+# build-std-features = ["compiler-builtins-mem"]
+
+[build]
+target = "wasm32-unknown-unknown"

programs/wasm_syscall_test/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "wasm_syscall_test"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

programs/wasm_syscall_test/src/main.rs

@@ -0,0 +1,18 @@
+#![no_std]
+#![no_main]
+
+fn _start() {
+    unsafe {
+        let abc = read_mem_addr(13);
+    }
+}
+
+extern "C" {
+    fn read_mem_addr(address: usize) -> u64;
+
+}
+
+#[panic_handler]
+fn panic(info: &core::panic::PanicInfo) -> ! {
+    loop {}
+}