[CSKY] Enhance asm parser and relocation fixup for some special symbol address instruction

Add processing of parsing and emiting lrw/jsri/jmpi instruction, including related fixup and relocation.
Add relax support about pseudo instructions such as jbr/jbsr.
Add objdump format support like arm in llvm-objdump.

1 files changed, 6 insertions, 1 deletions

diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index c8c5126..a9ce463 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -441,8 +441,13 @@ static bool isArmElf(const ObjectFile *Obj) {
   return Elf && Elf->getEMachine() == ELF::EM_ARM;
 }
 
+static bool isCSKYElf(const ObjectFile *Obj) {
+  const auto *Elf = dyn_cast<ELFObjectFileBase>(Obj);
+  return Elf && Elf->getEMachine() == ELF::EM_CSKY;
+}
+
 static bool hasMappingSymbols(const ObjectFile *Obj) {
-  return isArmElf(Obj) || isAArch64Elf(Obj);
+  return isArmElf(Obj) || isAArch64Elf(Obj) || isCSKYElf(Obj) ;
 }
 
 static void printRelocation(formatted_raw_ostream &OS, StringRef FileName,