void DumpObjScopes (FILE* F, unsigned long Offset)
/* Dump the scopes from an object file */
{
ObjHeader H;
Collection StrPool = AUTO_COLLECTION_INITIALIZER;
unsigned Count;
unsigned I;
/* Seek to the header position and read the header */
FileSetPos (F, Offset);
ReadObjHeader (F, &H);
/* Seek to the start of the string pool and read it */
FileSetPos (F, Offset + H.StrPoolOffs);
ReadStrPool (F, &StrPool);
/* Seek to the start of scopes */
FileSetPos (F, Offset + H.ScopeOffs);
/* Output a header */
printf (" Scopes:\n");
/* Check if the object file was compiled with debug info */
if ((H.Flags & OBJ_FLAGS_DBGINFO) == 0) {
/* Print that there no scopes and bail out */
printf (" Count:%27u\n", 0);
return;
}
/* Read the number of scopes and print it */
Count = ReadVar (F);
printf (" Count:%27u\n", Count);
/* Read and print all scopes */
for (I = 0; I < Count; ++I) {
const char* Name;
unsigned Len;
/* Read the data */
unsigned ParentId = ReadVar (F);
unsigned LexicalLevel = ReadVar (F);
unsigned Flags = ReadVar (F);
const char* ScopeType = GetScopeType (ReadVar (F));
/* Print the header */
printf (" Index:%27u\n", I);
/* Print the data */
printf (" Parent id:%21u\n", ParentId);
printf (" Lexical level:%17u\n", LexicalLevel);
printf (" Flags:%21s0x%02X\n", "", Flags);
printf (" Type:%26s\n", ScopeType);
/* Resolve and print the name */
Name = GetString (&StrPool, ReadVar (F));
Len = strlen (Name);
printf (" Name:%*s\"%s\"\n", (int)(24-Len), "", Name);
/* Size */
if (SCOPE_HAS_SIZE (Flags)) {
unsigned long Size = ReadVar (F);
printf (" Size:%20s0x%04lX (%lu)\n", "", Size, Size);
}
/* Label */
if (SCOPE_HAS_LABEL (Flags)) {
unsigned LabelId = ReadVar (F);
printf (" Label id:%22u\n", LabelId);
}
/* Skip the spans */
SkipSpanList (F);
}
/* Destroy the string pool */
DestroyStrPool (&StrPool);
}
void WriteScopes (void)
/* Write the scope table to the object file */
{
/* Tell the object file module that we're about to start the scopes */
ObjStartScopes ();
/* We will write scopes only if debug symbols are requested */
if (DbgSyms) {
/* Get head of list */
SymTable* S = RootScope;
/* Write the scope count to the file */
ObjWriteVar (ScopeCount);
/* Walk through all scopes and write them to the file */
while (S) {
/* Flags for this scope */
unsigned Flags = 0;
/* Check if this scope has a size. If so, remember it in the
** flags.
*/
long Size;
SymEntry* SizeSym = FindSizeOfScope (S);
if (SizeSym != 0 && SymIsConst (SizeSym, &Size)) {
Flags |= SCOPE_SIZE;
}
/* Check if the scope has a label */
if (S->Label) {
Flags |= SCOPE_LABELED;
}
/* Scope must be defined */
CHECK (S->Type != SCOPE_UNDEF);
/* Id of parent scope */
if (S->Parent) {
ObjWriteVar (S->Parent->Id);
} else {
ObjWriteVar (0);
}
/* Lexical level */
ObjWriteVar (S->Level);
/* Scope flags */
ObjWriteVar (Flags);
/* Type of scope */
ObjWriteVar (S->Type);
/* Name of the scope */
ObjWriteVar (S->Name);
/* If the scope has a size, write it to the file */
if (SCOPE_HAS_SIZE (Flags)) {
ObjWriteVar (Size);
}
/* If the scope has a label, write its id to the file */
if (SCOPE_HAS_LABEL (Flags)) {
ObjWriteVar (S->Label->DebugSymId);
}
/* Spans for this scope */
WriteSpanList (&S->Spans);
/* Next scope */
S = S->Next;
}
} else {
/* No debug info requested */
ObjWriteVar (0);
}
/* Done writing the scopes */
ObjEndScopes ();
}
