Add runtime symbol "INTEL_PATCH_CROSS_THREAD_OFFSET_OFF_R0" in ZEBIN.

An ELF symbol is required for R_SYM_ADDR_32 relocation.

Author: petechou

IGC/AdaptorOCL/OCL/sp/zebin_builder.cpp

@@ -119,6 +119,7 @@ void ZEBinaryBuilder::addProgramScopeInfo(const IGC::SOpenCLProgramInfo& program
 {
     addGlobalConstants(programInfo);
     addGlobals(programInfo);
+    addRuntimeSymbols();
     addProgramSymbols(programInfo);
     addProgramRelocations(programInfo);
 }
@@ -342,6 +343,13 @@ void ZEBinaryBuilder::addSymbol(const vISA::ZESymEntry& sym, ZEELFObjectBuilder:
         (sym.s_type == vISA::GenSymType::S_UNDEF) ? -1 : targetSect);
 }
 
+void ZEBinaryBuilder::addRuntimeSymbols()
+{
+    if (IGC_IS_FLAG_ENABLED(EnableGlobalStateBuffer))
+        mBuilder.addSymbol("INTEL_PATCH_CROSS_THREAD_OFFSET_OFF_R0", /*addr*/0, /*size*/0,
+            llvm::ELF::STB_GLOBAL, llvm::ELF::STT_NOTYPE, /*sectionId*/-1);
+}
+
 void ZEBinaryBuilder::addProgramSymbols(const IGC::SOpenCLProgramInfo& annotations)
 {
     const IGC::SOpenCLProgramInfo::ZEBinProgramSymbolTable& symbols = annotations.m_zebinSymbolTable;

IGC/AdaptorOCL/OCL/sp/zebin_builder.hpp

@@ -95,6 +95,9 @@ class ZEBinaryBuilder : DisallowCopy
     /// add spir-v section
     void addSPIRV(const uint8_t* data, uint32_t size);
 
+    /// add runtime symbols
+    void addRuntimeSymbols();
+
     /// add program scope symbols (e.g. symbols defined in global/const buffer)
     void addProgramSymbols(const IGC::SOpenCLProgramInfo& annotations);