1 use rustc_codegen_ssa::traits::PreDefineMethods; 2 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; 3 use rustc_middle::mir::mono::{Linkage, Visibility}; 4 use rustc_middle::ty::{self, Instance, TypeFoldable}; 5 use rustc_middle::ty::layout::{FnAbiOf, LayoutOf}; 6 use rustc_span::def_id::DefId; 7 8 use crate::base; 9 use crate::context::CodegenCx; 10 use crate::type_of::LayoutGccExt; 11 12 impl<'gcc, 'tcx> PreDefineMethods<'tcx> for CodegenCx<'gcc, 'tcx> { predefine_static(&self, def_id: DefId, _linkage: Linkage, _visibility: Visibility, symbol_name: &str)13 fn predefine_static(&self, def_id: DefId, _linkage: Linkage, _visibility: Visibility, symbol_name: &str) { 14 let attrs = self.tcx.codegen_fn_attrs(def_id); 15 let instance = Instance::mono(self.tcx, def_id); 16 let ty = instance.ty(self.tcx, ty::ParamEnv::reveal_all()); 17 let gcc_type = self.layout_of(ty).gcc_type(self, true); 18 19 let is_tls = attrs.flags.contains(CodegenFnAttrFlags::THREAD_LOCAL); 20 let global = self.define_global(symbol_name, gcc_type, is_tls, attrs.link_section); 21 22 // TODO(antoyo): set linkage and visibility. 23 self.instances.borrow_mut().insert(instance, global); 24 } 25 predefine_fn(&self, instance: Instance<'tcx>, linkage: Linkage, _visibility: Visibility, symbol_name: &str)26 fn predefine_fn(&self, instance: Instance<'tcx>, linkage: Linkage, _visibility: Visibility, symbol_name: &str) { 27 assert!(!instance.substs.needs_infer()); 28 29 let fn_abi = self.fn_abi_of_instance(instance, ty::List::empty()); 30 self.linkage.set(base::linkage_to_gcc(linkage)); 31 let _decl = self.declare_fn(symbol_name, &fn_abi); 32 //let attrs = self.tcx.codegen_fn_attrs(instance.def_id()); 33 34 // TODO(antoyo): call set_link_section() to allow initializing argc/argv. 35 // TODO(antoyo): set unique comdat. 36 // TODO(antoyo): use inline attribute from there in linkage.set() above. 37 } 38 } 39