Update mach_override to upstream 1a1bb352

third_party/mach_override/libudis86/input.h

+/* udis86 - libudis86/input.h
+ *
+ * Copyright (c) 2002-2009 Vivek Thampi
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification, 
+ * are permitted provided that the following conditions are met:
+ * 
+ *     * Redistributions of source code must retain the above copyright notice, 
+ *       this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright notice, 
+ *       this list of conditions and the following disclaimer in the documentation 
+ *       and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef UD_INPUT_H
+#define UD_INPUT_H
+
+#include "types.h"
+#include "udint.h"
+
+uint8_t ud_inp_next(struct ud* u);
+
+/* 
+ * inp_start
+ *    Should be called before each de-code operation.
+ */
+static inline void
+inp_start(struct ud *u)
+{
+  u->inp_ctr = 0;
+}
+
+/* inp_reset
+ *    Resets the current pointer to its position before the current
+ *    instruction disassembly was started.
+ */
+static inline void
+inp_reset(struct ud *u)
+{
+  u->inp_curr -= u->inp_ctr;
+  u->inp_ctr   = 0;
+}
+
+/* inp_sess
+ *    Returns the pointer to current session.
+ */
+static inline uint8_t*
+inp_sess(struct ud *u)
+{
+  return u->inp_sess;
+}
+
+/* 
+ * inp_curr 
+ *    Returns the current input byte.
+ */
+static inline uint8_t
+inp_curr(const struct ud *u)
+{
+  return u->inp_cache[u->inp_curr];
+}
+
+/*
+ * inp_back
+ *    Move back a single byte in the stream.
+ */
+static inline void
+inp_back(struct ud* u) 
+{
+  if (u->inp_ctr > 0) {
+    --u->inp_curr;
+    --u->inp_ctr;
+  }
+}
+
+/* 
+ * inp_peek
+ *    Peek next byte in input. 
+ */
+static inline uint8_t
+inp_peek(struct ud* u) 
+{
+  uint8_t r = ud_inp_next(u);
+  if (!u->error) {
+      inp_back(u); /* Don't backup if there was an error */
+  }
+  return r;
+}
+
+
+/*
+ * inp_len
+ *    Returns the number of bytes input in the current
+ *    session.
+ */
+static inline size_t
+inp_len(const struct ud *u)
+{
+  return u->inp_ctr;
+}
+
+#endif /* UD_INPUT_H */
+/*
+vim: set ts=2 sw=2 expandtab
+*/