1 files changed, 56 insertions, 64 deletions

diff --git a/arch/powerpc/boot/dtc-src/dtc-lexer.l b/arch/powerpc/boot/dtc-src/dtc-lexer.l
index c811b221b31e..44dbfd3f0976 100644
--- a/arch/powerpc/boot/dtc-src/dtc-lexer.l
+++ b/arch/powerpc/boot/dtc-src/dtc-lexer.l
@@ -28,6 +28,10 @@
 PROPNODECHAR    [a-zA-Z0-9,._+*#?@-]
 PATHCHAR        ({PROPNODECHAR}|[/])
 LABEL           [a-zA-Z_][a-zA-Z0-9_]*
+STRING          \"([^\\"]|\\.)*\"
+WS              [[:space:]]
+COMMENT         "/*"([^*]|\*+[^*/])*\*+"/"
+LINECOMMENT     "//".*\n
 
 %{
 #include "dtc.h"
@@ -52,29 +56,26 @@ static int dts_version; /* = 0 */
                                 DPRINT("<V1>\n"); \
                                 BEGIN(V1); \
                         }
+
+static void push_input_file(const char *filename);
+static int pop_input_file(void);
 %}
 
 %%
-<*>"/include/"          BEGIN(INCLUDE);
-
-<INCLUDE>\"[^"\n]*\"    {
-                        yytext[strlen(yytext) - 1] = 0;
-                        if (!push_input_file(yytext + 1)) {
-                                /* Some unrecoverable error.*/
-                                exit(1);
-                        }
-                        BEGIN_DEFAULT();
+<*>"/include/"{WS}*{STRING} {
+                        char *name = strchr(yytext, '\"') + 1;
+                        yytext[yyleng-1] = '\0';
+                        push_input_file(name);
                 }
 
-
 <*><<EOF>>              {
                         if (!pop_input_file()) {
                                 yyterminate();
                         }
                 }
 
-<*>\"([^\\"]|\\.)*\"    {
-                        yylloc.filenum = srcpos_filenum;
+<*>{STRING}     {
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("String: %s\n", yytext);
                         yylval.data = data_copy_escape_string(yytext+1,
@@ -84,7 +85,7 @@ static int dts_version; /* = 0 */
                 }
 
 <*>"/dts-v1/"   {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("Keyword: /dts-v1/\n");
                         dts_version = 1;
@@ -93,7 +94,7 @@ static int dts_version; /* = 0 */
                 }
 
 <*>"/memreserve/"       {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("Keyword: /memreserve/\n");
                         BEGIN_DEFAULT();
@@ -101,7 +102,7 @@ static int dts_version; /* = 0 */
                 }
 
 <*>{LABEL}:     {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("Label: %s\n", yytext);
                         yylval.labelref = strdup(yytext);
@@ -110,7 +111,7 @@ static int dts_version; /* = 0 */
                 }
 
 <INITIAL>[bodh]# {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         if (*yytext == 'b')
                                 yylval.cbase = 2;
@@ -125,7 +126,7 @@ static int dts_version; /* = 0 */
                 }
 
 <INITIAL>[0-9a-fA-F]+   {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         yylval.literal = strdup(yytext);
                         DPRINT("Literal: '%s'\n", yylval.literal);
@@ -133,7 +134,7 @@ static int dts_version; /* = 0 */
                 }
 
 <V1>[0-9]+|0[xX][0-9a-fA-F]+      {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         yylval.literal = strdup(yytext);
                         DPRINT("Literal: '%s'\n", yylval.literal);
@@ -141,7 +142,7 @@ static int dts_version; /* = 0 */
                 }
 
 \&{LABEL}       {       /* label reference */
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("Ref: %s\n", yytext+1);
                         yylval.labelref = strdup(yytext+1);
@@ -149,7 +150,7 @@ static int dts_version; /* = 0 */
                 }
 
 "&{/"{PATHCHAR}+\}      {       /* new-style path reference */
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         yytext[yyleng-1] = '\0';
                         DPRINT("Ref: %s\n", yytext+2);
@@ -158,7 +159,7 @@ static int dts_version; /* = 0 */
                 }
 
 <INITIAL>"&/"{PATHCHAR}+ {      /* old-style path reference */
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("Ref: %s\n", yytext+1);
                         yylval.labelref = strdup(yytext+1);
@@ -166,7 +167,7 @@ static int dts_version; /* = 0 */
                 }
 
 <BYTESTRING>[0-9a-fA-F]{2} {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         yylval.byte = strtol(yytext, NULL, 16);
                         DPRINT("Byte: %02x\n", (int)yylval.byte);
@@ -174,7 +175,7 @@ static int dts_version; /* = 0 */
                 }
 
 <BYTESTRING>"]" {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("/BYTESTRING\n");
                         BEGIN_DEFAULT();
@@ -182,7 +183,7 @@ static int dts_version; /* = 0 */
                 }
 
 <PROPNODENAME>{PROPNODECHAR}+ {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("PropNodeName: %s\n", yytext);
                         yylval.propnodename = strdup(yytext);
@@ -190,20 +191,19 @@ static int dts_version; /* = 0 */
                         return DT_PROPNODENAME;
                 }
 
-
-<*>[[:space:]]+ /* eat whitespace */
-
-<*>"/*"([^*]|\*+[^*/])*\*+"/"   {
-                        yylloc.filenum = srcpos_filenum;
+"/incbin/"      {
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
-                        DPRINT("Comment: %s\n", yytext);
-                        /* eat comments */
+                        DPRINT("Binary Include\n");
+                        return DT_INCBIN;
                 }
 
-<*>"//".*\n     /* eat line comments */
+<*>{WS}+        /* eat whitespace */
+<*>{COMMENT}+   /* eat C-style comments */
+<*>{LINECOMMENT}+ /* eat C++-style comments */
 
 <*>.            {
-                        yylloc.filenum = srcpos_filenum;
+                        yylloc.file = srcpos_file;
                         yylloc.first_line = yylineno;
                         DPRINT("Char: %c (\\x%02x)\n", yytext[0],
                                 (unsigned)yytext[0]);
@@ -227,14 +227,13 @@ static int dts_version; /* = 0 */
  */
 
 struct incl_file {
-        int filenum;
-        FILE *file;
+        struct dtc_file *file;
         YY_BUFFER_STATE yy_prev_buf;
         int yy_prev_lineno;
         struct incl_file *prev;
 };
 
-struct incl_file *incl_file_stack;
+static struct incl_file *incl_file_stack;
 
 
 /*
@@ -245,36 +244,34 @@ struct incl_file *incl_file_stack;
 static int incl_depth = 0;
 
 
-int push_input_file(const char *filename)
+static void push_input_file(const char *filename)
 {
-        FILE *f;
         struct incl_file *incl_file;
+        struct dtc_file *newfile;
+        struct search_path search, *searchptr = NULL;
 
-        if (!filename) {
-                yyerror("No include file name given.");
-                return 0;
-        }
+        assert(filename);
 
-        if (incl_depth++ >= MAX_INCLUDE_DEPTH) {
-                yyerror("Includes nested too deeply");
-                return 0;
+        if (incl_depth++ >= MAX_INCLUDE_DEPTH)
+                die("Includes nested too deeply");
+
+        if (srcpos_file) {
+                search.dir = srcpos_file->dir;
+                search.next = NULL;
+                search.prev = NULL;
+                searchptr = &search;
         }
 
-        f = dtc_open_file(filename);
+        newfile = dtc_open_file(filename, searchptr);
 
-        incl_file = malloc(sizeof(struct incl_file));
-        if (!incl_file) {
-                yyerror("Can not allocate include file space.");
-                return 0;
-        }
+        incl_file = xmalloc(sizeof(struct incl_file));
 
         /*
          * Save current context.
          */
         incl_file->yy_prev_buf = YY_CURRENT_BUFFER;
         incl_file->yy_prev_lineno = yylineno;
-        incl_file->filenum = srcpos_filenum;
-        incl_file->file = yyin;
+        incl_file->file = srcpos_file;
         incl_file->prev = incl_file_stack;
 
         incl_file_stack = incl_file;
@@ -282,23 +279,21 @@ int push_input_file(const char *filename)
         /*
          * Establish new context.
          */
-        srcpos_filenum = lookup_file_name(filename, 0);
+        srcpos_file = newfile;
         yylineno = 1;
-        yyin = f;
+        yyin = newfile->file;
         yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
-
-        return 1;
 }
 
 
-int pop_input_file(void)
+static int pop_input_file(void)
 {
         struct incl_file *incl_file;
 
         if (incl_file_stack == 0)
                 return 0;
 
-        fclose(yyin);
+        dtc_close_file(srcpos_file);
 
         /*
          * Pop.
@@ -313,16 +308,13 @@ int pop_input_file(void)
         yy_delete_buffer(YY_CURRENT_BUFFER);
         yy_switch_to_buffer(incl_file->yy_prev_buf);
         yylineno = incl_file->yy_prev_lineno;
-        srcpos_filenum = incl_file->filenum;
-        yyin = incl_file->file;
+        srcpos_file = incl_file->file;
+        yyin = incl_file->file ? incl_file->file->file : NULL;
 
         /*
          * Free old state.
          */
         free(incl_file);
 
-        if (YY_CURRENT_BUFFER == 0)
-                return 0;
-
         return 1;
 }