of/flattree: Update dtc to current mainline.

Pull in recent changes from the main dtc repository. These changes
primarily allow multiple device trees to be declared which are merged
by dtc. This feature allows us to include a basic dts file and then
provide more information for the specific system through the merging
functionality.

Changes pulled from git://git.jdl.com/software/dtc.git
commit id: 37c0b6a0, "dtc: Add code to make diffing trees easier"

Signed-off-by: John Bonesio <bones@secretlab.ca>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 50 insertions, 49 deletions

diff --git a/scripts/dtc/srcpos.h b/scripts/dtc/srcpos.h
index e17c7c04db8e..bd7966e56a53 100644
--- a/scripts/dtc/srcpos.h
+++ b/scripts/dtc/srcpos.h
@@ -17,69 +17,70 @@
  *                                                                   USA
  */
 
-/*
- * Augment the standard YYLTYPE with a filenum index into an
- * array of all opened filenames.
- */
+#ifndef _SRCPOS_H_
+#define _SRCPOS_H_
 
 #include <stdio.h>
 
-struct dtc_file {
+struct srcfile_state {
+        FILE *f;
+        char *name;
         char *dir;
-        const char *name;
-        FILE *file;
+        int lineno, colno;
+        struct srcfile_state *prev;
 };
 
-#if ! defined(YYLTYPE) && ! defined(YYLTYPE_IS_DECLARED)
-typedef struct YYLTYPE {
+extern struct srcfile_state *current_srcfile; /* = NULL */
+
+FILE *srcfile_relative_open(const char *fname, char **fullnamep);
+void srcfile_push(const char *fname);
+int srcfile_pop(void);
+
+struct srcpos {
     int first_line;
     int first_column;
     int last_line;
     int last_column;
-    struct dtc_file *file;
-} YYLTYPE;
-
-#define YYLTYPE_IS_DECLARED     1
-#define YYLTYPE_IS_TRIVIAL      1
-#endif
-
-/* Cater to old parser templates. */
-#ifndef YYID
-#define YYID(n) (n)
-#endif
+    struct srcfile_state *file;
+};
 
-#define YYLLOC_DEFAULT(Current, Rhs, N)                                 \
-    do                                                                  \
-      if (YYID (N))                                                     \
-        {                                                               \
-          (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
-          (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \
-          (Current).last_line    = YYRHSLOC (Rhs, N).last_line;         \
-          (Current).last_column  = YYRHSLOC (Rhs, N).last_column;       \
-          (Current).file         = YYRHSLOC (Rhs, N).file;              \
-        }                                                               \
-      else                                                              \
-        {                                                               \
-          (Current).first_line   = (Current).last_line   =              \
-            YYRHSLOC (Rhs, 0).last_line;                                \
-          (Current).first_column = (Current).last_column =              \
-            YYRHSLOC (Rhs, 0).last_column;                              \
-          (Current).file         = YYRHSLOC (Rhs, 0).file;              \
-        }                                                               \
-    while (YYID (0))
+#define YYLTYPE struct srcpos
 
+#define YYLLOC_DEFAULT(Current, Rhs, N)                                         \
+        do {                                                                    \
+                if (N) {                                                        \
+                        (Current).first_line = YYRHSLOC(Rhs, 1).first_line;     \
+                        (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
+                        (Current).last_line = YYRHSLOC(Rhs, N).last_line;       \
+                        (Current).last_column  = YYRHSLOC (Rhs, N).last_column; \
+                        (Current).file = YYRHSLOC(Rhs, N).file;                 \
+                } else {                                                        \
+                        (Current).first_line = (Current).last_line =            \
+                                YYRHSLOC(Rhs, 0).last_line;                     \
+                        (Current).first_column = (Current).last_column =        \
+                                YYRHSLOC(Rhs, 0).last_column;                   \
+                        (Current).file = YYRHSLOC (Rhs, 0).file;                \
+                }                                                               \
+        } while (0)
 
 
-extern void yyerror(char const *);
-extern void yyerrorf(char const *, ...) __attribute__((format(printf, 1, 2)));
+/*
+ * Fictional source position used for IR nodes that are
+ * created without otherwise knowing a true source position.
+ * For example,constant definitions from the command line.
+ */
+extern struct srcpos srcpos_empty;
 
-extern struct dtc_file *srcpos_file;
+extern void srcpos_update(struct srcpos *pos, const char *text, int len);
+extern struct srcpos *srcpos_copy(struct srcpos *pos);
+extern char *srcpos_string(struct srcpos *pos);
+extern void srcpos_dump(struct srcpos *pos);
 
-struct search_path {
-        const char *dir; /* NULL for current directory */
-        struct search_path *prev, *next;
-};
+extern void srcpos_verror(struct srcpos *pos, char const *, va_list va)
+     __attribute__((format(printf, 2, 0)));
+extern void srcpos_error(struct srcpos *pos, char const *, ...)
+     __attribute__((format(printf, 2, 3)));
+extern void srcpos_warn(struct srcpos *pos, char const *, ...)
+     __attribute__((format(printf, 2, 3)));
 
-extern struct dtc_file *dtc_open_file(const char *fname,
-                                      const struct search_path *search);
-extern void dtc_close_file(struct dtc_file *file);
+#endif /* _SRCPOS_H_ */