57 lines · cpp
1//===------ SemaM68k.cpp -------- M68k target-specific routines -----------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements semantic analysis functions specific to M68k.10//11//===----------------------------------------------------------------------===//12 13#include "clang/Sema/SemaM68k.h"14#include "clang/AST/ASTContext.h"15#include "clang/AST/Attr.h"16#include "clang/AST/DeclBase.h"17#include "clang/Basic/DiagnosticSema.h"18#include "clang/Sema/ParsedAttr.h"19 20namespace clang {21SemaM68k::SemaM68k(Sema &S) : SemaBase(S) {}22 23void SemaM68k::handleInterruptAttr(Decl *D, const ParsedAttr &AL) {24 if (!AL.checkExactlyNumArgs(SemaRef, 1))25 return;26 27 if (!AL.isArgExpr(0)) {28 Diag(AL.getLoc(), diag::err_attribute_argument_type)29 << AL << AANT_ArgumentIntegerConstant;30 return;31 }32 33 // FIXME: Check for decl - it should be void ()(void).34 35 Expr *NumParamsExpr = AL.getArgAsExpr(0);36 auto MaybeNumParams = NumParamsExpr->getIntegerConstantExpr(getASTContext());37 if (!MaybeNumParams) {38 Diag(AL.getLoc(), diag::err_attribute_argument_type)39 << AL << AANT_ArgumentIntegerConstant40 << NumParamsExpr->getSourceRange();41 return;42 }43 44 unsigned Num = MaybeNumParams->getLimitedValue(255);45 if ((Num & 1) || Num > 30) {46 Diag(AL.getLoc(), diag::err_attribute_argument_out_of_bounds)47 << AL << (int)MaybeNumParams->getSExtValue()48 << NumParamsExpr->getSourceRange();49 return;50 }51 52 D->addAttr(::new (getASTContext())53 M68kInterruptAttr(getASTContext(), AL, Num));54 D->addAttr(UsedAttr::CreateImplicit(getASTContext()));55}56} // namespace clang57