From 68a31d406c6dc4382c700d1199b062de2aa7e1da Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Tue, 31 Mar 2009 17:45:15 +0000
Subject: [PATCH] Driver: Call 'as' directly on FreeBSD.  - Patch by Ed
 Schouten!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68121 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Driver/ToolChains.cpp |  2 ++
 lib/Driver/Tools.cpp      | 36 ++++++++++++++++++++++++++++++++++++
 lib/Driver/Tools.h        | 19 +++++++++++++++++++
 3 files changed, 57 insertions(+)

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 6d512734ca..3401dce023 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -389,6 +389,8 @@ Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA) const {
   Tool *&T = Tools[Key];
   if (!T) {
     switch (Key) {
+    case Action::AssembleJobClass:
+      T = new tools::freebsd::Assemble(*this); break;
     default:
       T = &Generic_GCC::SelectTool(C, JA);
     }
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index cae0766873..2f8bc2f4ce 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1451,3 +1451,39 @@ void darwin::Lipo::ConstructJob(Compilation &C, const JobAction &JA,
     Args.MakeArgString(getToolChain().GetProgramPath(C, "lipo").c_str());
   Dest.addCommand(new Command(Exec, CmdArgs));
 }
+
+void freebsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
+                                    Job &Dest, const InputInfo &Output, 
+                                    const InputInfoList &Inputs, 
+                                    const ArgList &Args, 
+                                    const char *LinkingOutput) const
+{
+  ArgStringList CmdArgs;
+
+  // Conceptually, i386 on x86_64 is a separate tool chain, but for
+  // now we just detect this situation by looking for -m32.
+  if (Args.hasArg(options::OPT_m32))
+    CmdArgs.push_back("--32");
+
+  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA,
+                       options::OPT_Xassembler);
+
+  CmdArgs.push_back("-o");
+  if (Output.isPipe())
+    CmdArgs.push_back("-");
+  else
+    CmdArgs.push_back(Output.getFilename());
+
+  for (InputInfoList::const_iterator
+         it = Inputs.begin(), ie = Inputs.end(); it != ie; ++it) {
+    const InputInfo &II = *it;
+    if (II.isPipe())
+      CmdArgs.push_back("-");
+    else
+      CmdArgs.push_back(II.getFilename());
+  }
+
+  const char *Exec = 
+    Args.MakeArgString(getToolChain().GetProgramPath(C, "as").c_str());
+  Dest.addCommand(new Command(Exec, CmdArgs));
+}
diff --git a/lib/Driver/Tools.h b/lib/Driver/Tools.h
index 7ad60ed10c..d9716bacd1 100644
--- a/lib/Driver/Tools.h
+++ b/lib/Driver/Tools.h
@@ -233,6 +233,25 @@ namespace darwin {
   };
 }
 
+  /// freebsd -- Directly call GNU Binutils assembler and linker
+namespace freebsd {
+  class VISIBILITY_HIDDEN Assemble : public Tool  {
+  public:
+    Assemble(const ToolChain &TC) : Tool("freebsd::Assemble", TC) {}
+
+    virtual bool acceptsPipedInput() const { return true; }
+    virtual bool canPipeOutput() const { return true; }
+    virtual bool hasIntegratedCPP() const { return false; }
+
+    virtual void ConstructJob(Compilation &C, const JobAction &JA,
+                              Job &Dest,
+                              const InputInfo &Output, 
+                              const InputInfoList &Inputs, 
+                              const ArgList &TCArgs, 
+                              const char *LinkingOutput) const;
+  };
+}
+
 } // end namespace toolchains
 } // end namespace driver
 } // end namespace clang
-- 
2.40.0