From 57cc1a5d77d89a01508782dec8dabece351fbf1c Mon Sep 17 00:00:00 2001 From: Oren Ben Simhon Date: Tue, 9 Jan 2018 08:53:59 +0000 Subject: Added Control Flow Protection Flag Cf-protection is a target independent flag that instructs the back-end to instrument control flow mechanisms like: Branch, Return, etc. For example in X86 this flag will be used to instrument Indirect Branch Tracking instructions. Differential Revision: https://reviews.llvm.org/D40478 Change-Id: I5126e766c0e6b84118cae0ee8a20fe78cc373dea llvm-svn: 322063 --- clang/lib/Frontend/CompilerInvocation.cpp | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'clang/lib/Frontend/CompilerInvocation.cpp') diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp index 22528004688..7af58b1794f 100644 --- a/clang/lib/Frontend/CompilerInvocation.cpp +++ b/clang/lib/Frontend/CompilerInvocation.cpp @@ -798,6 +798,21 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, Opts.CallFEntry = Args.hasArg(OPT_mfentry); Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); + if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) { + StringRef Name = A->getValue(); + if (Name == "full") { + Opts.CFProtectionReturn = 1; + Opts.CFProtectionBranch = 1; + } else if (Name == "return") + Opts.CFProtectionReturn = 1; + else if (Name == "branch") + Opts.CFProtectionBranch = 1; + else if (Name != "none") { + Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; + Success = false; + } + } + if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections, OPT_compress_debug_sections_EQ)) { if (A->getOption().getID() == OPT_compress_debug_sections) { -- cgit v1.2.3