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| author | Dan Gohman <gohman@apple.com> | 2008-05-05 00:28:39 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2008-05-05 00:28:39 +0000 |
| commit | a779a9899a5e23bd5198973f4709d66cb4bc2e64 (patch) | |
| tree | f42654f8d9d6b2d0310b31500cedd1a0f93e05bb /lib/Target/X86/X86TargetAsmInfo.cpp | |
| parent | 6625eff8ec38095e9dab31294a86555a489e56a4 (diff) | |
| download | llvm-a779a9899a5e23bd5198973f4709d66cb4bc2e64.tar.gz llvm-a779a9899a5e23bd5198973f4709d66cb4bc2e64.tar.bz2 llvm-a779a9899a5e23bd5198973f4709d66cb4bc2e64.tar.xz | |
Add AsmPrinter support for emitting a directive to declare that
the code being generated does not require an executable stack.
Also, add target-specific code to make use of this on Linux
on x86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50634 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86TargetAsmInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetAsmInfo.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp index 7636d77f08..4aa9d4cfa8 100644 --- a/lib/Target/X86/X86TargetAsmInfo.cpp +++ b/lib/Target/X86/X86TargetAsmInfo.cpp @@ -128,6 +128,7 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) { break; case X86Subtarget::isELF: + case X86Subtarget::isELFLinux: ReadOnlySection = "\t.section\t.rodata"; FourByteConstantSection = "\t.section\t.rodata.cst4,\"aM\",@progbits,4"; EightByteConstantSection = "\t.section\t.rodata.cst8,\"aM\",@progbits,8"; @@ -229,6 +230,10 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) { SectionEndDirectiveSuffix = "\tends\n"; } + // On Linux we must declare when we can use a non-executable stack. + if (Subtarget->isTargetLinux()) + NonexecutableStackDirective = "\t.section\t.note.GNU-stack,\"\",@progbits"; + AssemblerDialect = Subtarget->getAsmFlavor(); } |