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 { |
21 | SemaAVR::SemaAVR(Sema &S) : SemaBase(S) {} |
22 | |
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(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(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 | |
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(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(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 | |