[GDBJIT] Provide full file names in generated DWARF (#14172)

* Fix compile unit info

Provide full path to source in SequencePoints for GDBJIT
Use source file and directory path for compile unit info in DWARF instead of module name.

* Add a class for building Directory Table and File Table

* Fix code inconsistencies and add comments

1 files changed, 6 insertions, 4 deletions

diff --git a/src/vm/gdbjit.h b/src/vm/gdbjit.h
index f7267ad2a1..6cfe52c36d 100644
--- a/src/vm/gdbjit.h
+++ b/src/vm/gdbjit.h
@@ -340,6 +340,7 @@ class Elf_Builder;
 class NotifyGdb
 {
 public:
+    class FileTableBuilder;
     static void MethodPrepared(MethodDesc* methodDescPtr);
     static void MethodPitched(MethodDesc* methodDescPtr);
     template <typename PARENT_TRAITS>
@@ -422,7 +423,7 @@ private:
 #ifdef FEATURE_GDBJIT_SYMTAB
     static bool EmitSymtab(Elf_Builder &, MethodDesc* methodDescPtr, PCODE pCode, TADDR codeSize);
 #endif // FEATURE_GDBJIT_SYMTAB
-    static bool EmitDebugInfo(Elf_Builder &, MethodDesc* methodDescPtr, PCODE pCode, TADDR codeSize, const char *szModuleFile);
+    static bool EmitDebugInfo(Elf_Builder &, MethodDesc* methodDescPtr, PCODE pCode, TADDR codeSize);
 
     static bool BuildSymbolTableSection(MemBuf& buf, PCODE addr, TADDR codeSize, int methodCount,
                                         NewArrayHolder<Elf_Symbol> &symbolNames, int symbolCount,
@@ -432,14 +433,15 @@ private:
     static bool BuildDebugAbbrev(MemBuf& buf);
     static bool BuildDebugInfo(MemBuf& buf, PTK_TypeInfoMap pTypeMap, FunctionMemberPtrArrayHolder &method);
     static bool BuildDebugPub(MemBuf& buf, const char* name, uint32_t size, uint32_t dieOffset);
-    static bool BuildLineTable(MemBuf& buf, PCODE startAddr, TADDR codeSize, SymbolsInfo* lines, unsigned nlines);
-    static bool BuildFileTable(MemBuf& buf, SymbolsInfo* lines, unsigned nlines);
+    static bool BuildLineTable(MemBuf& buf, PCODE startAddr, TADDR codeSize, SymbolsInfo* lines, unsigned nlines,
+                               const char * &cuPath);
+    static bool BuildFileTable(MemBuf& buf, SymbolsInfo* lines, unsigned nlines, const char * &cuPath);
     static bool BuildLineProg(MemBuf& buf, PCODE startAddr, TADDR codeSize, SymbolsInfo* lines, unsigned nlines);
     static void IssueSetAddress(char*& ptr, PCODE addr);
     static void IssueEndOfSequence(char*& ptr);
     static void IssueSimpleCommand(char*& ptr, uint8_t command);
     static void IssueParamCommand(char*& ptr, uint8_t command, char* param, int param_len);
-    static void SplitPathname(const char* path, const char*& pathName, const char*& fileName);
+    static const char* SplitFilename(const char* path);
     static bool CollectCalledMethods(CalledMethod* pCM, TADDR nativeCode, FunctionMemberPtrArrayHolder &method,
                                      NewArrayHolder<Elf_Symbol> &symbolNames, int &symbolCount);
 };