1 files changed, 172 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp b/contrib/llvm/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
new file mode 100644
index 0000000..fc0b0f8
--- /dev/null
+++ b/contrib/llvm/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
@@ -0,0 +1,172 @@
+//===-- X86MCAsmInfo.cpp - X86 asm properties -----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the declarations of the X86MCAsmInfo properties.
+//
+//===----------------------------------------------------------------------===//
+
+#include "X86MCAsmInfo.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ELF.h"
+using namespace llvm;
+
+enum AsmWriterFlavorTy {
+  // Note: This numbering has to match the GCC assembler dialects for inline
+  // asm alternatives to work right.
+  ATT = 0, Intel = 1
+};
+
+static cl::opt<AsmWriterFlavorTy>
+AsmWriterFlavor("x86-asm-syntax", cl::init(ATT),
+  cl::desc("Choose style of code to emit from X86 backend:"),
+  cl::values(clEnumValN(ATT,   "att",   "Emit AT&T-style assembly"),
+             clEnumValN(Intel, "intel", "Emit Intel-style assembly"),
+             clEnumValEnd));
+
+static cl::opt<bool>
+MarkedJTDataRegions("mark-data-regions", cl::init(false),
+  cl::desc("Mark code section jump table data regions."),
+  cl::Hidden);
+
+void X86MCAsmInfoDarwin::anchor() { }
+
+X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &T) {
+  bool is64Bit = T.getArch() == Triple::x86_64;
+  if (is64Bit)
+    PointerSize = CalleeSaveStackSlotSize = 8;
+
+  AssemblerDialect = AsmWriterFlavor;
+
+  TextAlignFillValue = 0x90;
+
+  if (!is64Bit)
+    Data64bitsDirective = nullptr;       // we can't emit a 64-bit unit
+
+  // Use ## as a comment string so that .s files generated by llvm can go
+  // through the GCC preprocessor without causing an error.  This is needed
+  // because "clang foo.s" runs the C preprocessor, which is usually reserved
+  // for .S files on other systems.  Perhaps this is because the file system
+  // wasn't always case preserving or something.
+  CommentString = "##";
+
+  SupportsDebugInformation = true;
+  UseDataRegionDirectives = MarkedJTDataRegions;
+
+  // Exceptions handling
+  ExceptionsType = ExceptionHandling::DwarfCFI;
+
+  // old assembler lacks some directives
+  // FIXME: this should really be a check on the assembler characteristics
+  // rather than OS version
+  if (T.isMacOSX() && T.isMacOSXVersionLT(10, 6))
+    HasWeakDefCanBeHiddenDirective = false;
+
+  // Assume ld64 is new enough that the abs-ified FDE relocs may be used
+  // (actually, must, since otherwise the non-extern relocations we produce
+  // overwhelm ld64's tiny little mind and it fails).
+  DwarfFDESymbolsUseAbsDiff = true;
+
+  UseIntegratedAssembler = true;
+}
+
+X86_64MCAsmInfoDarwin::X86_64MCAsmInfoDarwin(const Triple &Triple)
+  : X86MCAsmInfoDarwin(Triple) {
+}
+
+void X86ELFMCAsmInfo::anchor() { }
+
+X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
+  bool is64Bit = T.getArch() == Triple::x86_64;
+  bool isX32 = T.getEnvironment() == Triple::GNUX32;
+
+  // For ELF, x86-64 pointer size depends on the ABI.
+  // For x86-64 without the x32 ABI, pointer size is 8. For x86 and for x86-64
+  // with the x32 ABI, pointer size remains the default 4.
+  PointerSize = (is64Bit && !isX32) ? 8 : 4;
+
+  // OTOH, stack slot size is always 8 for x86-64, even with the x32 ABI.
+  CalleeSaveStackSlotSize = is64Bit ? 8 : 4;
+
+  AssemblerDialect = AsmWriterFlavor;
+
+  TextAlignFillValue = 0x90;
+
+  // Debug Information
+  SupportsDebugInformation = true;
+
+  // Exceptions handling
+  ExceptionsType = ExceptionHandling::DwarfCFI;
+
+  // Always enable the integrated assembler by default.
+  // Clang also enabled it when the OS is Solaris but that is redundant here.
+  UseIntegratedAssembler = true;
+}
+
+const MCExpr *
+X86_64MCAsmInfoDarwin::getExprForPersonalitySymbol(const MCSymbol *Sym,
+                                                   unsigned Encoding,
+                                                   MCStreamer &Streamer) const {
+  MCContext &Context = Streamer.getContext();
+  const MCExpr *Res =
+    MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_GOTPCREL, Context);
+  const MCExpr *Four = MCConstantExpr::create(4, Context);
+  return MCBinaryExpr::createAdd(Res, Four, Context);
+}
+
+void X86MCAsmInfoMicrosoft::anchor() { }
+
+X86MCAsmInfoMicrosoft::X86MCAsmInfoMicrosoft(const Triple &Triple) {
+  if (Triple.getArch() == Triple::x86_64) {
+    PrivateGlobalPrefix = ".L";
+    PrivateLabelPrefix = ".L";
+    PointerSize = 8;
+    WinEHEncodingType = WinEH::EncodingType::Itanium;
+  } else {
+    // 32-bit X86 doesn't use CFI, so this isn't a real encoding type. It's just
+    // a place holder that the Windows EHStreamer looks for to suppress CFI
+    // output. In particular, usesWindowsCFI() returns false.
+    WinEHEncodingType = WinEH::EncodingType::X86;
+  }
+
+  ExceptionsType = ExceptionHandling::WinEH;
+
+  AssemblerDialect = AsmWriterFlavor;
+
+  TextAlignFillValue = 0x90;
+
+  AllowAtInName = true;
+
+  UseIntegratedAssembler = true;
+}
+
+void X86MCAsmInfoGNUCOFF::anchor() { }
+
+X86MCAsmInfoGNUCOFF::X86MCAsmInfoGNUCOFF(const Triple &Triple) {
+  assert(Triple.isOSWindows() && "Windows is the only supported COFF target");
+  if (Triple.getArch() == Triple::x86_64) {
+    PrivateGlobalPrefix = ".L";
+    PrivateLabelPrefix = ".L";
+    PointerSize = 8;
+    WinEHEncodingType = WinEH::EncodingType::Itanium;
+    ExceptionsType = ExceptionHandling::WinEH;
+  } else {
+    ExceptionsType = ExceptionHandling::DwarfCFI;
+  }
+
+  AssemblerDialect = AsmWriterFlavor;
+
+  TextAlignFillValue = 0x90;
+
+  UseIntegratedAssembler = true;
+}