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Enable LLVM asan support for NetBSD/amd64 

Summary:
Enable LLVM asan sanitizer for NetBSD/amd64.

Don't generate -ldl for dlopen(3)-like functions on NetBSD.
These features are available in libc on NetBSD.

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, eugenis, kcc, dim

Reviewed By: dim

Subscribers: #clang, #sanitizers

Tags: #clang, #sanitizers

Differential Revision: https://reviews.llvm.org/D34960

llvm-svn: 307104
This commit is contained in:
Kamil Rytarowski 2017-07-04 19:55:56 +00:00
parent 2f8be0552e
commit 2eef475ad3
3 changed files with 15 additions and 0 deletions
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1
clang/lib/Driver/ToolChains/CommonArgs.cpp
View File

@ -524,6 +524,7 @@ void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
CmdArgs.push_back("-lm");
// There's no libdl on FreeBSD or RTEMS.
if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
TC.getTriple().getOS() != llvm::Triple::NetBSD &&
TC.getTriple().getOS() != llvm::Triple::RTEMS)
CmdArgs.push_back("-ldl");
}

13
clang/lib/Driver/ToolChains/NetBSD.cpp
View File

@ -15,6 +15,7 @@
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/Options.h"
#include "clang/Driver/SanitizerArgs.h"
#include "llvm/Option/ArgList.h"
using namespace clang::driver;
@ -246,6 +247,7 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
Args.AddAllArgs(CmdArgs, options::OPT_r);
bool NeedsSanitizerDeps = addSanitizerRuntimes(getToolChain(), Args, CmdArgs);
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
unsigned Major, Minor, Micro;
@ -279,6 +281,8 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lm");
}
if (NeedsSanitizerDeps)
linkSanitizerRuntimeDeps(getToolChain(), CmdArgs);
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
CmdArgs.push_back("-lc");
@ -410,3 +414,12 @@ void NetBSD::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/g++", "", "", "",
"", DriverArgs, CC1Args);
}
SanitizerMask NetBSD::getSupportedSanitizers() const {
const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
SanitizerMask Res = ToolChain::getSupportedSanitizers();
if (IsX86_64) {
Res |= SanitizerKind::Address;
}
return Res;
}

1
clang/lib/Driver/ToolChains/NetBSD.h
View File

@ -66,6 +66,7 @@ public:
llvm::opt::ArgStringList &CC1Args) const override;
bool IsUnwindTablesDefault() const override { return true; }
SanitizerMask getSupportedSanitizers() const override;
protected:
Tool *buildAssembler() const override;