import gdb-1999-11-01 snapshot

1 files changed, 57 insertions, 0 deletions

diff --git a/gdb/rdi-share/angel_bytesex.c b/gdb/rdi-share/angel_bytesex.c
new file mode 100644
index 0000000..054f960
--- /dev/null
+++ b/gdb/rdi-share/angel_bytesex.c
@@ -0,0 +1,57 @@
+/* 
+ * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
+ * 
+ * This software may be freely used, copied, modified, and distributed
+ * provided that the above copyright notice is preserved in all copies of the
+ * software.
+ */
+
+/*
+ * angel_bytesex.c - Code to support byte-sex independence
+ * Copyright: (C) 1991, Advanced RISC Machines Ltd., Cambridge, England.
+ */
+
+/*
+ * RCS $Revision$
+ * Checkin $Date$
+ */
+
+#include "angel_bytesex.h"
+
+static int reversing_bytes = 0;
+
+void bytesex_reverse(yes_or_no)
+int yes_or_no;
+{ reversing_bytes = yes_or_no;
+}
+
+int bytesex_reversing()
+{
+  return reversing_bytes;
+}
+
+int32 bytesex_hostval(v)
+int32 v;
+{ /* Return v with the same endian-ness as the host */
+  /* This mess generates better ARM code than the more obvious mess */
+  /* and may eventually peephole to optimal code...                 */
+  if (reversing_bytes)
+  { unsigned32 t;
+    /* t = v ^ (v ror 16) */
+    t = v ^ ((v << 16) | (((unsigned32)v) >> 16));
+    t &= ~0xff0000;
+    /* v = v ror 8 */
+    v = (v << 24) | (((unsigned32)v) >> 8);
+    v = v ^ (t >> 8);
+  }
+  return v;
+}
+
+int32 bytesex_hostval_16(v)
+int32 v;
+{
+  if (reversing_bytes) {
+    v = ((v >> 8) & 0xff) | ((v << 8) & 0xff00);
+  }
+  return v;
+}