1 files changed, 101 insertions, 0 deletions
diff --git a/engines/glk/glulxe/gestalt.cpp b/engines/glk/glulxe/gestalt.cpp
new file mode 100644
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--- /dev/null
+++ b/engines/glk/glulxe/gestalt.cpp
@@ -0,0 +1,101 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "engines/glk/glulxe/glulxe.h"
+
+namespace Glk {
+namespace Glulxe {
+
+uint Glulxe::do_gestalt(uint val, uint val2) {
+  switch (val) {
+
+  case gestulx_GlulxVersion:
+    return 0x00030102; /* Glulx spec version 3.1.2 */
+
+  case gestulx_TerpVersion:
+    return 0x00000504; /* Glulxe version 0.5.4 */
+
+  case gestulx_ResizeMem:
+#ifdef FIXED_MEMSIZE
+    return 0; /* The setmemsize opcodes are compiled out. */
+#else /* FIXED_MEMSIZE */
+    return 1; /* We can handle setmemsize. */
+#endif /* FIXED_MEMSIZE */
+
+  case gestulx_Undo:
+    return 1; /* We can handle saveundo and restoreundo. */
+
+  case gestulx_IOSystem:
+    switch (val2) {
+    case 0:
+      return 1; /* The "null" system always works. */
+    case 1:
+      return 1; /* The "filter" system always works. */
+    case 2:
+      return 1; /* A Glk library is hooked up. */
+    default:
+      return 0;
+    }
+
+  case gestulx_Unicode:
+    return 1; /* We can handle Unicode. */
+
+  case gestulx_MemCopy:
+    return 1; /* We can do mcopy/mzero. */
+
+  case gestulx_MAlloc:
+#ifdef FIXED_MEMSIZE
+    return 0; /* The malloc opcodes are compiled out. */
+#else /* FIXED_MEMSIZE */
+    return 1; /* We can handle malloc/mfree. */
+#endif /* FIXED_MEMSIZE */
+
+  case gestulx_MAllocHeap:
+    return heap_get_start();
+
+  case gestulx_Acceleration:
+    return 1; /* We can do accelfunc/accelparam. */
+
+  case gestulx_AccelFunc:
+    if (accel_find_func(val2))
+      return 1; /* We know this accelerated function. */
+    return 0;
+
+  case gestulx_Float:
+#ifdef FLOAT_SUPPORT
+    return 1; /* We can do floating-point operations. */
+#else /* FLOAT_SUPPORT */
+    return 0; /* The floating-point opcodes are not compiled in. */
+#endif /* FLOAT_SUPPORT */
+
+#ifdef GLULX_EXTEND_GESTALT
+  GLULX_EXTEND_GESTALT
+#endif /* GLULX_EXTEND_GESTALT */
+
+  default:
+    return 0;
+
+  }
+}
+
+} // End of namespace Glulxe
+} // End of namespace Glk