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