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[PowerPC] Option for secure plt mode 

This patch enables option for secure plt mode in
clang (-msecure-plt).

Differential Revision: https://reviews.llvm.org/D44921


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@329795 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Strahinja Petrovic 2018-04-11 12:24:44 +00:00
parent 45c3242e80
commit 378e40edd0
4 changed files with 22 additions and 0 deletions
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1
include/clang/Driver/Options.td
View File

@ -1957,6 +1957,7 @@ def maltivec : Flag<["-"], "maltivec">, Group<m_ppc_Features_Group>;
def mno_altivec : Flag<["-"], "mno-altivec">, Group<m_ppc_Features_Group>;
def mvsx : Flag<["-"], "mvsx">, Group<m_ppc_Features_Group>;
def mno_vsx : Flag<["-"], "mno-vsx">, Group<m_ppc_Features_Group>;
def msecure_plt : Flag<["-"], "msecure-plt">, Group<m_ppc_Features_Group>;
def mpower8_vector : Flag<["-"], "mpower8-vector">,
Group<m_ppc_Features_Group>;
def mno_power8_vector : Flag<["-"], "mno-power8-vector">,

10
lib/Driver/ToolChains/Arch/PPC.cpp
View File

@ -106,6 +106,16 @@ void ppc::getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple,
ppc::FloatABI FloatABI = ppc::getPPCFloatABI(D, Args);
if (FloatABI == ppc::FloatABI::Soft)
Features.push_back("-hard-float");
ppc::ReadGOTPtrMode ReadGOT = ppc::getPPCReadGOTPtrMode(D, Args);
if (ReadGOT == ppc::ReadGOTPtrMode::SecurePlt)
Features.push_back("+secure-plt");
}
ppc::ReadGOTPtrMode ppc::getPPCReadGOTPtrMode(const Driver &D, const ArgList &Args) {
if (Args.getLastArg(options::OPT_msecure_plt))
return ppc::ReadGOTPtrMode::SecurePlt;
return ppc::ReadGOTPtrMode::Bss;
}
ppc::FloatABI ppc::getPPCFloatABI(const Driver &D, const ArgList &Args) {

7
lib/Driver/ToolChains/Arch/PPC.h
View File

@ -29,10 +29,17 @@ enum class FloatABI {
Hard,
};
enum class ReadGOTPtrMode {
Bss,
SecurePlt,
};
FloatABI getPPCFloatABI(const Driver &D, const llvm::opt::ArgList &Args);
std::string getPPCTargetCPU(const llvm::opt::ArgList &Args);
const char *getPPCAsmModeForCPU(StringRef Name);
ReadGOTPtrMode getPPCReadGOTPtrMode(const Driver &D,
const llvm::opt::ArgList &Args);
void getPPCTargetFeatures(const Driver &D, const llvm::Triple &Triple,
const llvm::opt::ArgList &Args,

4
test/Driver/ppc-features.cpp
View File

@ -22,6 +22,10 @@
// RUN: %clang -target powerpc-unknown-linux-gnu %s -msoft-float -mhard-float -### -o %t.o 2>&1 | FileCheck --check-prefix=CHECK-SOFTHARD %s
// CHECK-SOFTHARD-NOT: "-target-feature" "-hard-float"
// check -msecure-plt option for ppc32
// RUN: %clang -target powerpc-unknown-linux-gnu -msecure-plt %s -### -o %t.o 2>&1 | FileCheck --check-prefix=CHECK-SECUREPLT %s
// CHECK-SECUREPLT: "-target-feature" "+secure-plt"
// check -mfloat-abi=x option
// RUN: %clang -target powerpc-unknown-linux-gnu %s -mfloat-abi=x -### -o %t.o 2>&1 | FileCheck --check-prefix=CHECK-ERRMSG %s
// CHECK-ERRMSG: error: invalid float ABI '-mfloat-abi=x'