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Use appropriate default PIE settings for OpenBSD. 

llvm-svn: 211624
This commit is contained in:
Brad Smith 2014-06-24 19:51:29 +00:00
parent 740812bb9a
commit 5b05db864b
2 changed files with 31 additions and 0 deletions
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21
clang/lib/Driver/Tools.cpp
View File

@ -2432,6 +2432,27 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
}
}
// OpenBSD-specific defaults for PIE
if (getToolChain().getTriple().getOS() == llvm::Triple::OpenBSD) {
switch (getToolChain().getTriple().getArch()) {
case llvm::Triple::mips64:
case llvm::Triple::mips64el:
case llvm::Triple::sparc:
case llvm::Triple::x86:
case llvm::Triple::x86_64:
IsPICLevelTwo = false; // "-fpie"
break;
case llvm::Triple::ppc:
case llvm::Triple::sparcv9:
IsPICLevelTwo = true; // "-fPIE"
break;
default:
break;
}
}
// For the PIC and PIE flag options, this logic is different from the
// legacy logic in very old versions of GCC, as that logic was just
// a bug no one had ever fixed. This logic is both more rational and

10
clang/test/Driver/pic.c
View File

@ -201,7 +201,17 @@
// RUN: | FileCheck %s --check-prefix=CHECK-NO-PIC
//
// On OpenBSD, PIE is enabled by default, but can be disabled.
// RUN: %clang -c %s -target amd64-pc-openbsd -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-PIE1
// RUN: %clang -c %s -target i386-pc-openbsd -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-PIE1
// RUN: %clang -c %s -target mips64-unknown-openbsd -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-PIE1
// RUN: %clang -c %s -target mips64el-unknown-openbsd -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-PIE1
// RUN: %clang -c %s -target powerpc-unknown-openbsd -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-PIE2
// RUN: %clang -c %s -target sparc64-unknown-openbsd -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-PIE2
// RUN: %clang -c %s -target i386-pc-openbsd -fno-pie -### 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-NO-PIC