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authorRafael Espindola <rafael.espindola@gmail.com>2012-11-23 16:59:41 +0000
committerRafael Espindola <rafael.espindola@gmail.com>2012-11-23 16:59:41 +0000
commitc8fec7e21f5c24303eab8a8592f3b8faff347d86 (patch)
tree5c9f44272f1e6deecb8b325ab238d5acbbc8f0d4 /lib/MC/MCAsmStreamer.cpp
parent834518f1cea15796a377afb31844638e3c483e78 (diff)
Implement .cfi_undefined. Based on a patch from PaX team, updated by
Roman Divacky. I just added the testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168520 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC/MCAsmStreamer.cpp')
-rw-r--r--lib/MC/MCAsmStreamer.cpp11
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 17a6323d0e..e53bc7b4ea 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -226,6 +226,7 @@ public:
virtual void EmitCFIRelOffset(int64_t Register, int64_t Offset);
virtual void EmitCFIAdjustCfaOffset(int64_t Adjustment);
virtual void EmitCFISignalFrame();
+ virtual void EmitCFIUndefined(int64_t Register);
virtual void EmitWin64EHStartProc(const MCSymbol *Symbol);
virtual void EmitWin64EHEndProc();
@@ -1036,6 +1037,16 @@ void MCAsmStreamer::EmitCFISignalFrame() {
EmitEOL();
}
+void MCAsmStreamer::EmitCFIUndefined(int64_t Register) {
+ MCStreamer::EmitCFIUndefined(Register);
+
+ if (!UseCFI)
+ return;
+
+ OS << "\t.cfi_undefined " << Register;
+ EmitEOL();
+}
+
void MCAsmStreamer::EmitWin64EHStartProc(const MCSymbol *Symbol) {
MCStreamer::EmitWin64EHStartProc(Symbol);