Update Yasm to 1.2.0 (Yasm Part 1/3)

third_party/yasm/patched-yasm/libyasm/bytecode.h

Index: third_party/yasm/patched-yasm/libyasm/bytecode.h
===================================================================
--- third_party/yasm/patched-yasm/libyasm/bytecode.h	(revision 165590)
+++ third_party/yasm/patched-yasm/libyasm/bytecode.h	(working copy)
@@ -2,10 +2,6 @@
  * \file libyasm/bytecode.h
  * \brief YASM bytecode interface.
  *
- * \rcs
- * $Id: bytecode.h 2130 2008-10-07 05:38:11Z peter $
- * \endrcs
- *
  * \license
  *  Copyright (C) 2001-2007  Peter Johnson
  *
@@ -147,6 +143,8 @@
      *                      passed-in buf matches the bytecode length
      *                      (it's okay not to do this if an error
      *                      indication is returned)
+     * \param bufstart      For calculating the correct offset parameter for
+     *                      the \a output_value calls: *bufp - bufstart.
      * \param d             data to pass to each call to
      *                      output_value/output_reloc
      * \param output_value  function to call to convert values into their byte
@@ -158,7 +156,8 @@
      *       preferable if calling this function twice would result in the
      *       same output.
      */
-    int (*tobytes) (yasm_bytecode *bc, unsigned char **bufp, void *d,
+    int (*tobytes) (yasm_bytecode *bc, unsigned char **bufp,
+                    unsigned char *bufstart, void *d,
                     yasm_output_value_func output_value,
                     /*@null@*/ yasm_output_reloc_func output_reloc);
 
@@ -277,7 +276,7 @@
  */
 YASM_LIB_DECL
 int yasm_bc_tobytes_common
-    (yasm_bytecode *bc, unsigned char **bufp, void *d,
+    (yasm_bytecode *bc, unsigned char **bufp, unsigned char *bufstart, void *d,
      yasm_output_value_func output_value,
      /*@null@*/ yasm_output_reloc_func output_reloc);
 
@@ -575,6 +574,12 @@
                                                        (unsigned long)(l))
 #endif
 
+/** Get the underlying value of a data value.
+ * \param dv    data value
+ * \return Value, or null if non-value (e.g. string or raw).
+ */
+yasm_value *yasm_dv_get_value(yasm_dataval *dv);
+
 /** Set multiple field of a data value.
  * A data value can be repeated a number of times when output.  This function
  * sets that multiple.