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| author | rdivacky <rdivacky@FreeBSD.org> | 2010-01-15 15:39:40 +0000 |
|---|---|---|
| committer | rdivacky <rdivacky@FreeBSD.org> | 2010-01-15 15:39:40 +0000 |
| commit | a3fa5c7f1b5e2ba4d6ec033dc0e2376326b05824 (patch) | |
| tree | a6082d4d1d1e9ddaea09a6a04bb4a47da95d642d /lib/Sema/TargetAttributesSema.cpp | |
| parent | bb1e3bc1e0be2b8f891db46457a8943451bf4d8b (diff) | |
| download | FreeBSD-src-a3fa5c7f1b5e2ba4d6ec033dc0e2376326b05824.zip FreeBSD-src-a3fa5c7f1b5e2ba4d6ec033dc0e2376326b05824.tar.gz | |
Update clang to r93512.
Diffstat (limited to 'lib/Sema/TargetAttributesSema.cpp')
| -rw-r--r-- | lib/Sema/TargetAttributesSema.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/Sema/TargetAttributesSema.cpp b/lib/Sema/TargetAttributesSema.cpp new file mode 100644 index 0000000..7c19bf6 --- /dev/null +++ b/lib/Sema/TargetAttributesSema.cpp @@ -0,0 +1,86 @@ +//===-- 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); + } +} + |
