1 files changed, 98 insertions, 0 deletions
diff --git a/src/inc/gcdump.h b/src/inc/gcdump.h
new file mode 100644
index 0000000000..21d0dd0f2b
--- /dev/null
+++ b/src/inc/gcdump.h
@@ -0,0 +1,98 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+/*****************************************************************************
+ *                                  GCDump.h
+ *
+ * Defines functions to display the GCInfo as defined by the GC-encoding 
+ * spec. The GC information may be either dynamically created by a 
+ * Just-In-Time compiler conforming to the standard code-manager spec,
+ * or may be persisted by a managed native code compiler conforming
+ * to the standard code-manager spec.
+ */
+
+/*****************************************************************************/
+#ifndef __GCDUMP_H__
+#define __GCDUMP_H__
+/*****************************************************************************/
+
+#include "gcinfo.h"     // For InfoHdr
+
+#ifndef FASTCALL
+#define FASTCALL __fastcall
+#endif
+
+
+class GCDump
+{
+public:
+
+    GCDump                          (bool           encBytes     = true, 
+                                     unsigned       maxEncBytes  = 5, 
+                                     bool           dumpCodeOffs = true);
+
+#ifdef _TARGET_X86_
+    /*-------------------------------------------------------------------------
+     * Dumps the InfoHdr to 'stdout'
+     * table            : Start of the GC info block
+     * verifyGCTables   : If the JIT has been compiled with VERIFY_GC_TABLES
+     * Return value     : Size in bytes of the header encoding
+     */
+
+    unsigned FASTCALL   DumpInfoHdr (PTR_CBYTE      table,
+                                     InfoHdr    *   header,         /* OUT */
+                                     unsigned   *   methodSize,     /* OUT */
+                                     bool           verifyGCTables = false);
+#endif
+
+    /*-------------------------------------------------------------------------
+     * Dumps the GC tables to 'stdout'
+     * table            : Ptr to the start of the table part of the GC info.
+     *                      This immediately follows the GCinfo header
+     * verifyGCTables   : If the JIT has been compiled with VERIFY_GC_TABLES
+     * Return value     : Size in bytes of the GC table encodings
+     */
+
+    size_t   FASTCALL   DumpGCTable (PTR_CBYTE      table,
+#ifdef _TARGET_X86_
+                                     const InfoHdr& header,
+#endif
+                                     unsigned       methodSize,
+                                     bool           verifyGCTables = false);
+
+    /*-------------------------------------------------------------------------
+     * Dumps the location of ptrs for the given code offset
+     * verifyGCTables   : If the JIT has been compiled with VERIFY_GC_TABLES
+     */
+
+    void     FASTCALL   DumpPtrsInFrame(PTR_CBYTE   infoBlock,
+                                     PTR_CBYTE      codeBlock,
+                                     unsigned       offs,
+                                     bool           verifyGCTables = false);
+
+
+public:
+	typedef void (*printfFtn)(const char* fmt, ...);
+	printfFtn gcPrintf;	
+    //-------------------------------------------------------------------------
+protected:
+
+    bool                fDumpEncBytes;
+    unsigned            cMaxEncBytes;
+
+    bool                fDumpCodeOffsets;
+
+    /* Helper methods */
+
+    PTR_CBYTE           DumpEncoding(PTR_CBYTE      table, 
+                                     int            cDumpBytes);
+    void                DumpOffset  (unsigned       o);
+    void                DumpOffsetEx(unsigned       o);
+
+};
+
+/*****************************************************************************/
+#endif // __GC_DUMP_H__
+/*****************************************************************************/