root: Add errorName syscall

1 files changed, 12 insertions, 0 deletions

diff --git a/src/root.zig b/src/root.zig
index 7a8ce3a..c5625d0 100644
--- a/src/root.zig
+++ b/src/root.zig
@@ -11,6 +11,8 @@ const Result = struct {
     error_code: usize,
 };
 
+const Error = error{Kernel};
+
 fn ecall(number: usize, args: anytype) Result {
     comptime var registers = [max_args]usize{0};
     inline for (args, 0..) |arg, i| {
@@ -36,3 +38,13 @@ fn ecall(number: usize, args: anytype) Result {
     );
     return result;
 }
+
+pub fn errorName(code: u16, buffer: []u8) !usize {
+    const result = ecall(100000, .{
+        code,
+        buffer.ptr,
+        buffer.len,
+    });
+    if (result.error_code != 0) return Error.Kernel;
+    return result.value;
+}