1 //===------ SemaAVR.cpp ---------- AVR 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-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements semantic analysis functions specific to AVR.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "clang/Sema/SemaAVR.h"
14 #include "clang/AST/DeclBase.h"
15 #include "clang/Basic/DiagnosticSema.h"
16 #include "clang/Sema/Attr.h"
17 #include "clang/Sema/ParsedAttr.h"
18 #include "clang/Sema/Sema.h"
19
20 namespace clang {
SemaAVR(Sema & S)21 SemaAVR::SemaAVR(Sema &S) : SemaBase(S) {}
22
handleInterruptAttr(Decl * D,const ParsedAttr & AL)23 void SemaAVR::handleInterruptAttr(Decl *D, const ParsedAttr &AL) {
24 if (!isFuncOrMethodForAttrSubject(D)) {
25 Diag(D->getLocation(), diag::warn_attribute_wrong_decl_type)
26 << AL << AL.isRegularKeywordAttribute() << ExpectedFunction;
27 return;
28 }
29
30 if (!AL.checkExactlyNumArgs(SemaRef, 0))
31 return;
32
33 // AVR interrupt handlers must have no parameter and be void type.
34 if (hasFunctionProto(D) && getFunctionOrMethodNumParams(D) != 0) {
35 Diag(D->getLocation(), diag::warn_interrupt_signal_attribute_invalid)
36 << /*AVR*/ 3 << /*interrupt*/ 0 << 0;
37 return;
38 }
39 if (!getFunctionOrMethodResultType(D)->isVoidType()) {
40 Diag(D->getLocation(), diag::warn_interrupt_signal_attribute_invalid)
41 << /*AVR*/ 3 << /*interrupt*/ 0 << 1;
42 return;
43 }
44
45 handleSimpleAttribute<AVRInterruptAttr>(*this, D, AL);
46 }
47
handleSignalAttr(Decl * D,const ParsedAttr & AL)48 void SemaAVR::handleSignalAttr(Decl *D, const ParsedAttr &AL) {
49 if (!isFuncOrMethodForAttrSubject(D)) {
50 Diag(D->getLocation(), diag::warn_attribute_wrong_decl_type)
51 << AL << AL.isRegularKeywordAttribute() << ExpectedFunction;
52 return;
53 }
54
55 if (!AL.checkExactlyNumArgs(SemaRef, 0))
56 return;
57
58 // AVR signal handlers must have no parameter and be void type.
59 if (hasFunctionProto(D) && getFunctionOrMethodNumParams(D) != 0) {
60 Diag(D->getLocation(), diag::warn_interrupt_signal_attribute_invalid)
61 << /*AVR*/ 3 << /*signal*/ 1 << 0;
62 return;
63 }
64 if (!getFunctionOrMethodResultType(D)->isVoidType()) {
65 Diag(D->getLocation(), diag::warn_interrupt_signal_attribute_invalid)
66 << /*AVR*/ 3 << /*signal*/ 1 << 1;
67 return;
68 }
69
70 handleSimpleAttribute<AVRSignalAttr>(*this, D, AL);
71 }
72
73 } // namespace clang
74