initial commit

src/agent.jazz

@@ -0,0 +1,128 @@
+from Jade require "crypto_sign/ed25519/amd64/amd64-64-24k/ed25519.jinc"
+
+param int SK_SIZE = 32;
+param int SHARED_MEM_SIZE = 1024;
+param int PRIVATE_MEM_SIZE = 3200;
+
+inline fn extract_nth_ptr(reg u64 sync_mem shared_mem, inline int i) -> reg u64 {
+    reg u64 p;
+
+    p = (u64)[sync_mem + (16 + i * 8)];
+    p += shared_mem;
+
+    return p;
+}
+
+inline fn extract_ipc_id(reg u64 sync_mem) -> reg u64 {
+    reg u64 id;
+
+    id = (u64)[sync_mem + 8];
+
+    return id;
+}
+
+inline fn generate_keypair(reg u64 shared_mem sync_mem private_mem, stack u64 key_id) -> (stack u64, reg u64) {
+    reg u64 skptr idptr pkptr return_value;
+
+    skptr = key_id * SK_SIZE;
+    skptr += private_mem;
+
+    pkptr = extract_nth_ptr(sync_mem, shared_mem, 1);
+
+    () = #spill(shared_mem, sync_mem);
+
+    jade_ed25519_amd64_keygen(skptr, pkptr);
+
+    () = #unspill(shared_mem, sync_mem);
+
+    idptr = extract_nth_ptr(sync_mem, shared_mem, 0);
+    (u64)[idptr] = key_id;
+
+    key_id += 1;
+
+    return_value = 1;
+    return key_id, return_value;
+}
+
+inline fn sign(reg u64 shared_mem sync_mem private_mem) -> reg u64 {
+    reg u64 skptr mptr len sigptr return_value;
+
+    skptr = extract_nth_ptr(sync_mem, shared_mem, 0);
+    skptr = (u64)[skptr];
+    skptr *= SK_SIZE;
+    skptr += private_mem;
+
+    mptr = extract_nth_ptr(sync_mem, shared_mem, 1);
+
+    len = extract_nth_ptr(sync_mem, shared_mem, 2);
+    len = (u64)[len];
+
+    sigptr = extract_nth_ptr(sync_mem, shared_mem, 3);
+
+    jade_ed25519_amd64_sign(skptr, mptr, len, sigptr);
+
+    return_value = 1;
+    return return_value;
+}
+
+export fn agent_start(#public reg u64 shared_mem sync_mem, #private reg u64 private_mem_fd) {
+    stack u64 key_id return_value;
+    reg u64 private_mem;
+    // Futex varibles
+    reg u64 futex_op val timeout uaddr2 val3 woken_up;
+    // Mmap variables
+    reg u64 addr len prot flag off;
+
+    () = #spill(shared_mem, sync_mem);
+
+    private_mem_fd = private_mem_fd;
+    addr = 0;
+    len = PRIVATE_MEM_SIZE;
+    prot = 3; // PROT_READ | PROT_WRITE
+    flag = 1; // MAP_SHARED;
+    off = 0;
+    private_mem = #mmap(addr, len, prot, flag, private_mem_fd, off);
+
+    () = #spill(private_mem);
+
+    key_id = 0;
+
+     while (true) {
+        while {
+            () = #unspill(sync_mem);
+            futex_op = 0;
+            val = 0;
+            timeout = 0;
+            uaddr2 = 0;
+            val3 = 0;
+            woken_up = #futex(sync_mem, futex_op, val, timeout, uaddr2, val3);
+        } (woken_up != 0)
+
+        () = #unspill(shared_mem, sync_mem, private_mem);
+        
+        reg u64 id;
+        id = extract_ipc_id(sync_mem);
+
+        if (id == 0) {
+            key_id, return_value = generate_keypair(shared_mem, sync_mem, private_mem, key_id);
+        } else {
+            if (id == 1) {
+                return_value = sign(shared_mem, sync_mem, private_mem);
+            }
+        }
+
+        () = #unspill(sync_mem);
+
+        (u64)[sync_mem + 16] = return_value;
+
+        while {
+            () = #unspill(sync_mem);
+            futex_op = 1;
+            val = 1;
+            timeout = 0;
+            uaddr2 = 0;
+            val3 = 0;
+            woken_up = #futex(sync_mem, futex_op, val, timeout, uaddr2, val3);
+        } (woken_up != 1)
+    }
+}