Initial checkin of the Mach-O emitter. There's plenty of fixmes, but it

does emit linkable .o files in very simple cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29850 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 41 insertions, 0 deletions

diff --git a/lib/Target/PowerPC/PPCMachOWriter.cpp b/lib/Target/PowerPC/PPCMachOWriter.cpp
new file mode 100644
index 0000000000..29f823829d
--- /dev/null
+++ b/lib/Target/PowerPC/PPCMachOWriter.cpp
@@ -0,0 +1,41 @@
+//===-- PPCMachOWriter.cpp - Emit a Mach-O file for the PowerPC backend ---===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Nate Begeman and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements a Mach-O writer for the PowerPC backend.  The public
+// interface to this file is the createPPCMachOObjectWriterPass function.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PPCTargetMachine.h"
+#include "llvm/PassManager.h"
+#include "llvm/CodeGen/MachOWriter.h"
+#include "llvm/Support/Visibility.h"
+using namespace llvm;
+
+namespace {
+  class VISIBILITY_HIDDEN PPCMachOWriter : public MachOWriter {
+  public:
+    PPCMachOWriter(std::ostream &O, PPCTargetMachine &TM) : MachOWriter(O, TM) {
+      // FIMXE: choose ppc64 when appropriate
+      Header.cputype = MachOHeader::CPU_TYPE_POWERPC;
+      Header.cpusubtype = MachOHeader::CPU_SUBTYPE_POWERPC_ALL;
+    }
+
+  };
+}
+
+/// addPPCMachOObjectWriterPass - Returns a pass that outputs the generated code
+/// as a Mach-O object file.
+///
+void llvm::addPPCMachOObjectWriterPass(PassManager &FPM,
+                                       std::ostream &O, PPCTargetMachine &TM) {
+  PPCMachOWriter *EW = new PPCMachOWriter(O, TM);
+  FPM.add(EW);
+  FPM.add(createPPCCodeEmitterPass(TM, EW->getMachineCodeEmitter()));
+}