Add llvm::object::getELFSectionTypeName().

This is motivated by https://reviews.llvm.org/D32488 where I am trying
to add printing of the section type for incompatible sections to LLD
error messages. This patch allows us to use the same code in
llvm-readobj and LLD instead of duplicating the function inside LLD.

Patch by Alexander Richardson!

llvm-svn: 301921

1 files changed, 4 insertions, 54 deletions

diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index 7893eea5d22..2e9e01d9642 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -983,57 +983,6 @@ static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = {
   { "AMDGPU_HSA_METADATA",          ELF::STT_AMDGPU_HSA_METADATA }
 };
 
-static const char *getElfSectionType(unsigned Arch, unsigned Type) {
-  switch (Arch) {
-  case ELF::EM_ARM:
-    switch (Type) {
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX);
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP);
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES);
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY);
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION);
-    }
-  case ELF::EM_HEXAGON:
-    switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
-  case ELF::EM_X86_64:
-    switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
-  case ELF::EM_MIPS:
-  case ELF::EM_MIPS_RS3_LE:
-    switch (Type) {
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO);
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS);
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS);
-    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_DWARF);
-    }
-  }
-
-  switch (Type) {
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL              );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS          );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB            );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB            );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA              );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH              );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC           );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE              );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS            );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL               );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB             );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM            );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY        );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY        );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY     );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP             );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX      );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES    );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH          );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef        );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed       );
-  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym        );
-  default: return "";
-  }
-}
-
 static const char *getGroupType(uint32_t Flag) {
   if (Flag & ELF::GRP_COMDAT)
     return "COMDAT";
@@ -3635,9 +3584,10 @@ template <class ELFT> void LLVMStyle<ELFT>::printSections(const ELFO *Obj) {
     DictScope SectionD(W, "Section");
     W.printNumber("Index", SectionIndex);
     W.printNumber("Name", Name, Sec.sh_name);
-    W.printHex("Type",
-               getElfSectionType(Obj->getHeader()->e_machine, Sec.sh_type),
-               Sec.sh_type);
+    W.printHex(
+        "Type",
+        object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type),
+        Sec.sh_type);
     std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags),
                                                   std::end(ElfSectionFlags));
     switch (Obj->getHeader()->e_machine) {