| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| /// Run over the whole crate and check for ExprInlineAsm. |
| /// Inline asm isn't allowed on virtual ISA based targets, so we reject it |
| /// here. |
| |
| use rustc::session::Session; |
| |
| use syntax::ast; |
| use syntax::visit::Visitor; |
| use syntax::visit; |
| |
| pub fn check_crate(sess: &Session, krate: &ast::Crate) { |
| if sess.target.target.options.allow_asm { return; } |
| |
| visit::walk_crate(&mut CheckNoAsm { sess: sess, }, krate); |
| } |
| |
| #[derive(Copy, Clone)] |
| struct CheckNoAsm<'a> { |
| sess: &'a Session, |
| } |
| |
| impl<'a> Visitor for CheckNoAsm<'a> { |
| fn visit_expr(&mut self, e: &ast::Expr) { |
| match e.node { |
| ast::ExprKind::InlineAsm(_) => span_err!(self.sess, e.span, E0472, |
| "asm! is unsupported on this target"), |
| _ => {}, |
| } |
| visit::walk_expr(self, e) |
| } |
| } |