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| author | David Majnemer <david.majnemer@gmail.com> | 2022-08-31 21:55:12 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2022-09-12 21:15:34 +0000 |
| commit | ab56719acd98778fb2e48fa425ac7c8d27bdea86 (patch) | |
| tree | 940b1cb0ac282f1600a50fba2bd6f31e3a0307b6 /llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp | |
| parent | 6607fdf7490c5bf73a8892bc08ed2dba55043ca8 (diff) | |
| download | llvm-ab56719acd98778fb2e48fa425ac7c8d27bdea86.zip llvm-ab56719acd98778fb2e48fa425ac7c8d27bdea86.tar.gz llvm-ab56719acd98778fb2e48fa425ac7c8d27bdea86.tar.bz2 | |
[clang, llvm] Add __declspec(safebuffers), support it in CodeView
__declspec(safebuffers) is equivalent to
__attribute__((no_stack_protector)). This information is recorded in
CodeView.
While we are here, add support for strict_gs_check.
Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp index 16213af..a97eb9f 100644 --- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp @@ -1498,8 +1498,16 @@ void CodeViewDebug::beginFunctionImpl(const MachineFunction *MF) { FPO |= FrameProcedureOptions::MarkedInline; if (GV.hasFnAttribute(Attribute::Naked)) FPO |= FrameProcedureOptions::Naked; - if (MFI.hasStackProtectorIndex()) + if (MFI.hasStackProtectorIndex()) { FPO |= FrameProcedureOptions::SecurityChecks; + if (GV.hasFnAttribute(Attribute::StackProtectStrong) || + GV.hasFnAttribute(Attribute::StackProtectReq)) { + FPO |= FrameProcedureOptions::StrictSecurityChecks; + } + } else if (!GV.hasStackProtectorFnAttr()) { + // __declspec(safebuffers) disables stack guards. + FPO |= FrameProcedureOptions::SafeBuffers; + } FPO |= FrameProcedureOptions(uint32_t(CurFn->EncodedLocalFramePtrReg) << 14U); FPO |= FrameProcedureOptions(uint32_t(CurFn->EncodedParamFramePtrReg) << 16U); if (Asm->TM.getOptLevel() != CodeGenOpt::None && |