commit cd1308296ed7834e957b093e538476b43e8cf949
author Saleem Abdulrasool <compnerd@compnerd.org> Wed Apr 02 20:32:05 2014 +0000
committer Saleem Abdulrasool <compnerd@compnerd.org> Wed Apr 02 20:32:05 2014 +0000
tree 4dc73654a02978adbed2428b740ac9654b1cfc18
parent 2a2459f365d953a1493ba95e9b43c5bc3e95d829

ARM: update subtarget information for Windows on ARM

Update the subtarget information for Windows on ARM.  This enables using the MC
layer to target Windows on ARM.

llvm-svn: 205459

llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp

diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
index 52e1fb9..b7f96e0 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
@@ -76,3 +76,31 @@
     DwarfRegNumForCFI = true;
   }
 }
+
+void ARMCOFFMCAsmInfoMicrosoft::anchor() { }
+
+ARMCOFFMCAsmInfoMicrosoft::ARMCOFFMCAsmInfoMicrosoft() {
+  AlignmentIsInBytes = false;
+
+  PrivateGlobalPrefix = "$M";
+}
+
+void ARMCOFFMCAsmInfoGNU::anchor() { }
+
+ARMCOFFMCAsmInfoGNU::ARMCOFFMCAsmInfoGNU() {
+  AlignmentIsInBytes = false;
+
+  CommentString = "@";
+  Code16Directive = ".code\t16";
+  Code32Directive = ".code\t32";
+  PrivateGlobalPrefix = ".L";
+
+  HasLEB128 = true;
+  SupportsDebugInformation = true;
+  ExceptionsType = ExceptionHandling::None;
+  UseParensForSymbolVariant = true;
+
+  UseIntegratedAssembler = false;
+  DwarfRegNumForCFI = true;
+}
+

llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h

diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
index be02952..beaf6a4 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
@@ -14,6 +14,7 @@
 #ifndef LLVM_ARMTARGETASMINFO_H
 #define LLVM_ARMTARGETASMINFO_H
 
+#include "llvm/MC/MCAsmInfoCOFF.h"
 #include "llvm/MC/MCAsmInfoDarwin.h"
 #include "llvm/MC/MCAsmInfoELF.h"
 
@@ -33,6 +34,18 @@
     void setUseIntegratedAssembler(bool Value) override;
   };
 
+  class ARMCOFFMCAsmInfoMicrosoft : public MCAsmInfoMicrosoft {
+    void anchor();
+  public:
+    explicit ARMCOFFMCAsmInfoMicrosoft();
+  };
+
+  class ARMCOFFMCAsmInfoGNU : public MCAsmInfoGNUCOFF {
+    void anchor();
+  public:
+    explicit ARMCOFFMCAsmInfoGNU();
+  };
+
 } // namespace llvm
 
 #endif

llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp

diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index 99e73a5..949a3d5 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -218,10 +218,31 @@
   Triple TheTriple(TT);
 
   MCAsmInfo *MAI;
-  if (TheTriple.isOSBinFormatMachO())
+  switch (TheTriple.getOS()) {
+  case llvm::Triple::Darwin:
+  case llvm::Triple::IOS:
+  case llvm::Triple::MacOSX:
     MAI = new ARMMCAsmInfoDarwin(TT);
-  else
-    MAI = new ARMELFMCAsmInfo(TT);
+    break;
+  case llvm::Triple::Win32:
+    switch (TheTriple.getEnvironment()) {
+    case llvm::Triple::Itanium:
+      MAI = new ARMCOFFMCAsmInfoGNU();
+      break;
+    case llvm::Triple::MSVC:
+      MAI = new ARMCOFFMCAsmInfoMicrosoft();
+      break;
+    default:
+      llvm_unreachable("invalid environment");
+    }
+    break;
+  default:
+    if (TheTriple.isOSBinFormatMachO())
+      MAI = new ARMMCAsmInfoDarwin(TT);
+    else
+      MAI = new ARMELFMCAsmInfo(TT);
+    break;
+  }
 
   unsigned Reg = MRI.getDwarfRegNum(ARM::SP, true);
   MAI->addInitialFrameState(MCCFIInstruction::createDefCfa(0, Reg, 0));