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
20namespace clang {
21SemaAVR::SemaAVR(Sema &S) : SemaBase(S) {}
22
23void SemaAVR::handleInterruptAttr(Decl *D, const ParsedAttr &AL) {
24 if (!isFuncOrMethodForAttrSubject(D)) {
25 Diag(Loc: D->getLocation(), DiagID: diag::warn_attribute_wrong_decl_type)
26 << AL << AL.isRegularKeywordAttribute() << ExpectedFunction;
27 return;
28 }
29
30 if (!AL.checkExactlyNumArgs(S&: SemaRef, Num: 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(Loc: D->getLocation(), DiagID: diag::warn_interrupt_signal_attribute_invalid)
36 << /*AVR*/ 3 << /*interrupt*/ 0 << 0;
37 return;
38 }
39 if (!getFunctionOrMethodResultType(D)->isVoidType()) {
40 Diag(Loc: D->getLocation(), DiagID: diag::warn_interrupt_signal_attribute_invalid)
41 << /*AVR*/ 3 << /*interrupt*/ 0 << 1;
42 return;
43 }
44
45 handleSimpleAttribute<AVRInterruptAttr>(S&: *this, D, CI: AL);
46}
47
48void SemaAVR::handleSignalAttr(Decl *D, const ParsedAttr &AL) {
49 if (!isFuncOrMethodForAttrSubject(D)) {
50 Diag(Loc: D->getLocation(), DiagID: diag::warn_attribute_wrong_decl_type)
51 << AL << AL.isRegularKeywordAttribute() << ExpectedFunction;
52 return;
53 }
54
55 if (!AL.checkExactlyNumArgs(S&: SemaRef, Num: 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(Loc: D->getLocation(), DiagID: diag::warn_interrupt_signal_attribute_invalid)
61 << /*AVR*/ 3 << /*signal*/ 1 << 0;
62 return;
63 }
64 if (!getFunctionOrMethodResultType(D)->isVoidType()) {
65 Diag(Loc: D->getLocation(), DiagID: diag::warn_interrupt_signal_attribute_invalid)
66 << /*AVR*/ 3 << /*signal*/ 1 << 1;
67 return;
68 }
69
70 handleSimpleAttribute<AVRSignalAttr>(S&: *this, D, CI: AL);
71}
72
73} // namespace clang
74