Add all options needed to support -fapple-kext. wip.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122987 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 33 insertions, 4 deletions

diff --git a/include/clang/Basic/LangOptions.h b/include/clang/Basic/LangOptions.h
index a868dbd9eb..f31c4ff6fb 100644
--- a/include/clang/Basic/LangOptions.h
+++ b/include/clang/Basic/LangOptions.h
@@ -45,6 +45,7 @@ public:
   unsigned ObjCNonFragileABI : 1;  // Objective-C modern abi enabled
   unsigned ObjCNonFragileABI2 : 1;  // Objective-C enhanced modern abi enabled
   unsigned ObjCDefaultSynthProperties : 1; // Objective-C auto-synthesized properties.
+  unsigned AppleKext         : 1;  // Allow apple kext features.
 
   unsigned PascalStrings     : 1;  // Allow Pascal strings
   unsigned WritableStrings   : 1;  // Allow writable strings
@@ -156,6 +157,7 @@ public:
     GNUMode = GNUKeywords = ImplicitInt = Digraphs = 0;
     HexFloats = 0;
     GC = ObjC1 = ObjC2 = ObjCNonFragileABI = ObjCNonFragileABI2 = 0;
+    AppleKext = 0;
     ObjCDefaultSynthProperties = 0;
     NoConstantCFStrings = 0; InlineVisibilityHidden = 0;
     C99 = Microsoft = Borland = CPlusPlus = CPlusPlus0x = 0;
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 5ae7f32837..955ca72a2c 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -461,6 +461,8 @@ def fobjc_gc : Flag<"-fobjc-gc">,
   HelpText<"Enable Objective-C garbage collection">;
 def fobjc_gc_only : Flag<"-fobjc-gc-only">,
   HelpText<"Use GC exclusively for Objective-C related memory management">;
+def fapple_kext : Flag<"-fapple-kext">,
+  HelpText<"Use apple's kext abi">;
 def fobjc_dispatch_method_EQ : Joined<"-fobjc-dispatch-method=">,
   HelpText<"Objective-C dispatch method to use">;
 def fobjc_default_synthesize_properties : Flag<"-fobjc-default-synthesize-properties">,
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 9d9179b621..ee77f48c7c 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1284,6 +1284,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
     }
   }
 
+  if (Args.getLastArg(options::OPT_fapple_kext))
+    CmdArgs.push_back("-fapple-kext");
+
   Args.AddLastArg(CmdArgs, options::OPT_fno_show_column);
   Args.AddLastArg(CmdArgs, options::OPT_fobjc_sender_dependent_dispatch);
   Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_print_source_range_info);
@@ -1321,8 +1324,14 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   // Forward -f options with positive and negative forms; we translate
   // these by hand.
 
+  if (Args.hasArg(options::OPT_mkernel)) {
+    if (!Args.hasArg(options::OPT_fapple_kext))
+      CmdArgs.push_back("-fapple-kext");
+    if (!Args.hasArg(options::OPT_fbuiltin))
+      CmdArgs.push_back("-fno-builtin");
+  }
   // -fbuiltin is default.
-  if (!Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin))
+  else if (!Args.hasFlag(options::OPT_fbuiltin, options::OPT_fno_builtin))
     CmdArgs.push_back("-fno-builtin");
 
   if (!Args.hasFlag(options::OPT_fassume_sane_operator_new,
@@ -1519,9 +1528,14 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
                    options::OPT_mno_pascal_strings,
                    false))
     CmdArgs.push_back("-fpascal-strings");
-
+  
+  if (Args.hasArg(options::OPT_mkernel) ||
+      Args.hasArg(options::OPT_fapple_kext)) {
+    if (!Args.hasArg(options::OPT_fcommon))
+      CmdArgs.push_back("-fno-common");
+  }
   // -fcommon is default, only pass non-default.
-  if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common))
+  else if (!Args.hasFlag(options::OPT_fcommon, options::OPT_fno_common))
     CmdArgs.push_back("-fno-common");
 
   // -fsigned-bitfields is default, and clang doesn't yet support
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 48121a1770..aa44abf19e 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -639,6 +639,9 @@ static void LangOptsToArgs(const LangOptions &Opts,
       Res.push_back("-fobjc-gc-only");
     }
   }
+  if (Opts.AppleKext)
+    Res.push_back("-fapple-kext");
+  
   if (Opts.getVisibilityMode() != DefaultVisibility) {
     Res.push_back("-fvisibility");
     if (Opts.getVisibilityMode() == HiddenVisibility) {
@@ -1351,7 +1354,9 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
     Opts.setGCMode(LangOptions::GCOnly);
   else if (Args.hasArg(OPT_fobjc_gc))
     Opts.setGCMode(LangOptions::HybridGC);
-
+  
+  if (Args.hasArg(OPT_fapple_kext))
+    Opts.AppleKext = 1;
   if (Args.hasArg(OPT_print_ivar_layout))
     Opts.ObjCGCBitmapPrint = 1;
   if (Args.hasArg(OPT_fno_constant_cfstrings))
diff --git a/test/Driver/apple-kext-mkernel.c b/test/Driver/apple-kext-mkernel.c
new file mode 100644
index 0000000000..712dfc8d0e
--- /dev/null
+++ b/test/Driver/apple-kext-mkernel.c
@@ -0,0 +1,6 @@
+// RUN: %clang -ccc-host-triple x86_64-apple-darwin10 -mkernel -### -fsyntax-only %s 2> %t
+// RUN grep "-disable-red-zone" %t
+// RUN grep "-fapple-kext" %t
+// RUN grep "-fno-builtin" %t
+// RUN grep "-fno-rtti" %t
+// RUN grep "-fno-common" %t