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| author | Reid Kleckner <reid@kleckner.net> | 2014-04-01 18:34:21 +0000 |
|---|---|---|
| committer | Reid Kleckner <reid@kleckner.net> | 2014-04-01 18:34:21 +0000 |
| commit | 101102711df0be1b15afb61c306503590b7e4936 (patch) | |
| tree | 643a8766350b91669e7b5af7b296ee7e8b57ee00 /llvm/lib | |
| parent | 553751b9bc1cbd79f319bdd080777ce18c426671 (diff) | |
| download | bcm5719-llvm-101102711df0be1b15afb61c306503590b7e4936.tar.gz bcm5719-llvm-101102711df0be1b15afb61c306503590b7e4936.zip | |
Support segmented stacks on Win64
Identical to Win32 method except the GS segment register is used for TLS
instead of FS and pvArbitrary is at TEB offset 0x28 instead of 0x14.
llvm-svn: 205342
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86FrameLowering.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86FrameLowering.cpp b/llvm/lib/Target/X86/X86FrameLowering.cpp index 5054d293cf0..f0ad4d12d00 100644 --- a/llvm/lib/Target/X86/X86FrameLowering.cpp +++ b/llvm/lib/Target/X86/X86FrameLowering.cpp @@ -1167,7 +1167,7 @@ X86FrameLowering::adjustForSegmentedStacks(MachineFunction &MF) const { if (MF.getFunction()->isVarArg()) report_fatal_error("Segmented stacks do not support vararg functions."); if (!STI.isTargetLinux() && !STI.isTargetDarwin() && - !STI.isTargetWin32() && !STI.isTargetFreeBSD()) + !STI.isTargetWin32() && !STI.isTargetWin64() && !STI.isTargetFreeBSD()) report_fatal_error("Segmented stacks not supported on this platform."); MachineBasicBlock *allocMBB = MF.CreateMachineBasicBlock(); @@ -1211,6 +1211,9 @@ X86FrameLowering::adjustForSegmentedStacks(MachineFunction &MF) const { } else if (STI.isTargetDarwin()) { TlsReg = X86::GS; TlsOffset = 0x60 + 90*8; // See pthread_machdep.h. Steal TLS slot 90. + } else if (STI.isTargetWin64()) { + TlsReg = X86::GS; + TlsOffset = 0x28; // pvArbitrary, reserved for application use } else if (STI.isTargetFreeBSD()) { TlsReg = X86::FS; TlsOffset = 0x18; @@ -1248,7 +1251,7 @@ X86FrameLowering::adjustForSegmentedStacks(MachineFunction &MF) const { BuildMI(checkMBB, DL, TII.get(X86::LEA32r), ScratchReg).addReg(X86::ESP) .addImm(1).addReg(0).addImm(-StackSize).addReg(0); - if (STI.isTargetLinux() || STI.isTargetWin32()) { + if (STI.isTargetLinux() || STI.isTargetWin32() || STI.isTargetWin64()) { BuildMI(checkMBB, DL, TII.get(X86::CMP32rm)).addReg(ScratchReg) .addReg(0).addImm(0).addReg(0).addImm(TlsOffset).addReg(TlsReg); } else if (STI.isTargetDarwin()) { |
