implement xchacha20 and x25519

src/main.rs

@@ -72,7 +72,7 @@ fn compile_file(args: Args) -> Result<(), ZernError> {
 
         run_command(format!("nasm -f elf64 -o {}.o {}.s", args.out, args.out));
 
-        if args.no_musl {
+        if args.use_glibc {
             run_command(format!(
                 "gcc -no-pie -o {} {}.o -flto -Wl,--gc-sections {}",
                 args.out, args.out, args.cflags
@@ -113,8 +113,8 @@ struct Args {
     #[arg(short = 'r', help = "Run the compiled executable")]
     run_exe: bool,
 
-    #[arg(short = 'm', help = "Don't use musl")]
-    no_musl: bool,
+    #[arg(short = 'm', help = "Use glibc instead of musl")]
+    use_glibc: bool,
 
     #[arg(short = 'C', default_value = "", help = "Extra flags to pass to gcc")]
     cflags: String,

src/std.zr

@@ -282,9 +282,8 @@ func str.parse_i64[s: str] : i64
         i = i + 1
     return num * sign
 
-func str.hex_encode[s: str] : str
+func str.hex_encode[s: str, s_len: i64] : str
     let hex_chars: str = "0123456789abcdef"
-    let s_len: i64 = str.len(s)
     let j = 0
     let out: str = mem.alloc(s_len * 2 + 1)
 
@@ -509,11 +508,17 @@ func alg.reduce[arr: array, fn: ptr, acc: i64] : i64
 func os.exit[code: i64] : void
     _builtin_syscall(60, code)
 
-func os.urandom[]: i64
-    let n = 0
+func os.urandom[n: i64]: ptr
+    let buffer: ptr = mem.alloc(n)
     let fd: i64 = _builtin_syscall(257, -100, "/dev/urandom", 0, 0) // openat
-    _builtin_syscall(0, fd, ^n, 8) // read
+    _builtin_syscall(0, fd, buffer, n) // read
     _builtin_syscall(3, fd) // close
+    return buffer
+
+func os.urandom_i64[]: i64
+    let buffer: ptr = os.urandom(8)
+    let n: i64 = mem.read64(buffer)
+    mem.free(buffer)
     return n
 
 func os.time[] : i64