1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
//===-- TargetAttributesSema.cpp - Encapsulate target attributes-*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains semantic analysis implementation for target-specific
// attributes.
//
//===----------------------------------------------------------------------===//
#include "Sema.h"
#include "TargetAttributesSema.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/ADT/Triple.h"
using namespace clang;
TargetAttributesSema::~TargetAttributesSema() {}
bool TargetAttributesSema::ProcessDeclAttribute(Scope *scope, Decl *D,
const AttributeList &Attr, Sema &S) const {
return false;
}
static void HandleMSP430InterruptAttr(Decl *d,
const AttributeList &Attr, Sema &S) {
// Check the attribute arguments.
if (Attr.getNumArgs() != 1) {
S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1;
return;
}
// FIXME: Check for decl - it should be void ()(void).
Expr *NumParamsExpr = static_cast<Expr *>(Attr.getArg(0));
llvm::APSInt NumParams(32);
if (!NumParamsExpr->isIntegerConstantExpr(NumParams, S.Context)) {
S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int)
<< "interrupt" << NumParamsExpr->getSourceRange();
return;
}
unsigned Num = NumParams.getLimitedValue(255);
if ((Num & 1) || Num > 30) {
S.Diag(Attr.getLoc(), diag::err_attribute_argument_out_of_bounds)
<< "interrupt" << (int)NumParams.getSExtValue()
<< NumParamsExpr->getSourceRange();
return;
}
d->addAttr(::new (S.Context) MSP430InterruptAttr(Num));
d->addAttr(::new (S.Context) UsedAttr());
}
namespace {
class MSP430AttributesSema : public TargetAttributesSema {
public:
MSP430AttributesSema() { }
bool ProcessDeclAttribute(Scope *scope, Decl *D,
const AttributeList &Attr, Sema &S) const {
if (Attr.getName()->getName() == "interrupt") {
HandleMSP430InterruptAttr(D, Attr, S);
return true;
}
return false;
}
};
}
const TargetAttributesSema &Sema::getTargetAttributesSema() const {
if (TheTargetAttributesSema)
return *TheTargetAttributesSema;
const llvm::Triple &Triple(Context.Target.getTriple());
switch (Triple.getArch()) {
default:
return *(TheTargetAttributesSema = new TargetAttributesSema);
case llvm::Triple::msp430:
return *(TheTargetAttributesSema = new MSP430AttributesSema);
}
}
|
