Add relocation iterators to the libObject C API.

llvm-svn: 143107

Author: resistor

llvm/include/llvm-c/Object.h

@@ -32,6 +32,7 @@ extern "C" {
 typedef struct LLVMOpaqueObjectFile *LLVMObjectFileRef;
 typedef struct LLVMOpaqueSectionIterator *LLVMSectionIteratorRef;
 typedef struct LLVMOpaqueSymbolIterator *LLVMSymbolIteratorRef;
+typedef struct LLVMOpaqueRelocationIterator *LLVMRelocationIteratorRef;
 
 // ObjectFile creation
 LLVMObjectFileRef LLVMCreateObjectFile(LLVMMemoryBufferRef MemBuf);
@@ -61,6 +62,14 @@ uint64_t LLVMGetSectionAddress(LLVMSectionIteratorRef SI);
 LLVMBool LLVMGetSectionContainsSymbol(LLVMSectionIteratorRef SI,
                                  LLVMSymbolIteratorRef Sym);
 
+// Section Relocation iterators
+LLVMRelocationIteratorRef LLVMGetRelocations(LLVMSectionIteratorRef Section);
+void LLVMDisposeRelocationIterator(LLVMRelocationIteratorRef RI);
+LLVMBool LLVMIsRelocationIteratorAtEnd(LLVMSectionIteratorRef Section,
+                                       LLVMRelocationIteratorRef RI);
+void LLVMMoveToNextRelocation(LLVMRelocationIteratorRef RI);
+
+
 // SymbolRef accessors
 const char *LLVMGetSymbolName(LLVMSymbolIteratorRef SI);
 uint64_t LLVMGetSymbolAddress(LLVMSymbolIteratorRef SI);
@@ -99,6 +108,17 @@ namespace llvm {
       return reinterpret_cast<LLVMSymbolIteratorRef>
         (const_cast<symbol_iterator*>(SI));
     }
+
+    inline relocation_iterator *unwrap(LLVMRelocationIteratorRef SI) {
+      return reinterpret_cast<relocation_iterator*>(SI);
+    }
+
+    inline LLVMRelocationIteratorRef
+    wrap(const relocation_iterator *SI) {
+      return reinterpret_cast<LLVMRelocationIteratorRef>
+        (const_cast<relocation_iterator*>(SI));
+    }
+
   }
 }
 

llvm/lib/Object/Object.cpp

@@ -112,6 +112,29 @@ LLVMBool LLVMGetSectionContainsSymbol(LLVMSectionIteratorRef SI,
   return ret;
 }
 
+// Section Relocation iterators
+LLVMRelocationIteratorRef LLVMGetRelocations(LLVMSectionIteratorRef Section) {
+  relocation_iterator SI = (*unwrap(Section))->begin_relocations();
+  return wrap(new relocation_iterator(SI));
+}
+
+void LLVMDisposeRelocationIterator(LLVMRelocationIteratorRef SI) {
+  delete unwrap(SI);
+}
+
+LLVMBool LLVMIsRelocationIteratorAtEnd(LLVMSectionIteratorRef Section,
+                                       LLVMRelocationIteratorRef SI) {
+  return (*unwrap(SI) == (*unwrap(Section))->end_relocations()) ? 1 : 0;
+}
+
+void LLVMMoveToNextRelocation(LLVMRelocationIteratorRef SI) {
+  error_code ec;
+  unwrap(SI)->increment(ec);
+  if (ec) report_fatal_error("LLVMMoveToNextRelocation failed: " +
+                             ec.message());
+}
+
+
 // SymbolRef accessors
 const char *LLVMGetSymbolName(LLVMSymbolIteratorRef SI) {
   StringRef ret;