Teach CellSPU about ELF sections and new section emitter classes.

NB: This is likely to need more work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58832 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/CellSPU/SPUTargetAsmInfo.cpp

@@ -14,38 +14,28 @@
 #include "SPUTargetAsmInfo.h"
 #include "SPUTargetMachine.h"
 #include "llvm/Function.h"
+#include "llvm/Support/Compiler.h"
+
 using namespace llvm;
 
-SPUTargetAsmInfo::SPUTargetAsmInfo(const SPUTargetMachine &TM)
-  : TargetAsmInfo(TM) {
+SPULinuxTargetAsmInfo::SPULinuxTargetAsmInfo(const SPUTargetMachine &TM) :
+    SPUTargetAsmInfo<ELFTargetAsmInfo>(TM) {
   PCSymbol = ".";
   CommentString = "#";
   GlobalPrefix = "";
   PrivateGlobalPrefix = ".L";
-  ZeroDirective = "\t.space\t";
-  SetDirective = "\t.set";
-  Data64bitsDirective = "\t.quad\t";  
-  AlignmentIsInBytes = false;
-  SwitchToSectionDirective = ".section\t";
-  ConstantPoolSection = "\t.const\t";
-  JumpTableDataSection = ".const";
-  CStringSection = "\t.cstring";
-  StaticCtorsSection = ".mod_init_func";
-  StaticDtorsSection = ".mod_term_func";
-  InlineAsmStart = "# InlineAsm Start";
-  InlineAsmEnd = "# InlineAsm End";
-  
-  NeedsSet = true;
-  /* FIXME: Need actual assembler syntax for DWARF info: */
-  DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
-  DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
-  DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
-  DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
-  DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
-  DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
-  DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
-  DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
-  DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
-  DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
-  DwarfMacInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
 }
+
+/// PreferredEHDataFormat - This hook allows the target to select data
+/// format used for encoding pointers in exception handling data. Reason is
+/// 0 for data, 1 for code labels, 2 for function pointers. Global is true
+/// if the symbol can be relocated.
+unsigned
+SPULinuxTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
+                                             bool Global) const {
+  // We really need to write something here.
+  return TargetAsmInfo::PreferredEHDataFormat(Reason, Global);
+}
+
+// Instantiate default implementation.
+TEMPLATE_INSTANTIATION(class SPUTargetAsmInfo<TargetAsmInfo>);

lib/Target/CellSPU/SPUTargetAsmInfo.h

@@ -11,20 +11,41 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef PPCTARGETASMINFO_H
-#define PPCTARGETASMINFO_H
+#ifndef SPUTARGETASMINFO_H
+#define SPUTARGETASMINFO_H
 
 #include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Target/ELFTargetAsmInfo.h"
+#include "SPUTargetMachine.h"
+#include "SPUSubtarget.h"
 
 namespace llvm {
 
   // Forward declaration.
   class SPUTargetMachine;
+  
+  template <class BaseTAI>
+  struct SPUTargetAsmInfo : public BaseTAI {
+    explicit SPUTargetAsmInfo(const SPUTargetMachine &TM):
+      BaseTAI(TM) {
+      /* (unused today)
+       * const SPUSubtarget *Subtarget = &TM.getSubtarget<SPUSubtarget>(); */
 
-  struct SPUTargetAsmInfo : public TargetAsmInfo {
-    SPUTargetAsmInfo(const SPUTargetMachine &TM);
+      BaseTAI::ZeroDirective = "\t.space\t";
+      BaseTAI::SetDirective = "\t.set";
+      BaseTAI::Data64bitsDirective = "\t.quad\t";
+      BaseTAI::AlignmentIsInBytes = false;
+      BaseTAI::LCOMMDirective = "\t.lcomm\t";
+      BaseTAI::InlineAsmStart = "# InlineAsm Start";
+      BaseTAI::InlineAsmEnd = "# InlineAsm End";
+    }
+  };
+  
+  struct SPULinuxTargetAsmInfo : public SPUTargetAsmInfo<ELFTargetAsmInfo> {
+    explicit SPULinuxTargetAsmInfo(const SPUTargetMachine &TM);
+    virtual unsigned PreferredEHDataFormat(DwarfEncoding::Target Reason,
+                                           bool Global) const;
   };
-
 } // namespace llvm
 
-#endif
+#endif /* SPUTARGETASMINFO_H */

lib/Target/CellSPU/SPUTargetMachine.cpp

@@ -36,7 +36,7 @@ SPUFrameInfo::getCalleeSaveSpillSlots(unsigned &NumEntries) const {
 const TargetAsmInfo *
 SPUTargetMachine::createTargetAsmInfo() const
 {
-  return new SPUTargetAsmInfo(*this);
+  return new SPULinuxTargetAsmInfo(*this);
 }
 
 unsigned